-#include "../../../mono-extensions/mono/mini/mini-arm64.c"
+/*
+ * mini-arm64.c: ARM64 backend for the Mono code generator
+ *
+ * Copyright 2013 Xamarin, Inc (http://www.xamarin.com)
+ *
+ * Based on mini-arm.c:
+ *
+ * Authors:
+ * Paolo Molaro (lupus@ximian.com)
+ * Dietmar Maurer (dietmar@ximian.com)
+ *
+ * (C) 2003 Ximian, Inc.
+ * Copyright 2003-2011 Novell, Inc (http://www.novell.com)
+ * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
+ */
+
+#include "mini.h"
+#include "cpu-arm64.h"
+#include "ir-emit.h"
+
+#include <mono/arch/arm64/arm64-codegen.h>
+#include <mono/utils/mono-mmap.h>
+#include <mono/utils/mono-memory-model.h>
+#include <mono/metadata/abi-details.h>
+
+/*
+ * Documentation:
+ *
+ * - ARM(R) Architecture Reference Manual, ARMv8, for ARMv8-A architecture profile (DDI0487A_a_armv8_arm.pdf)
+ * - Procedure Call Standard for the ARM 64-bit Architecture (AArch64) (IHI0055B_aapcs64.pdf)
+ * - ELF for the ARM 64-bit Architecture (IHI0056B_aaelf64.pdf)
+ *
+ * Register usage:
+ * - ip0/ip1/lr are used as temporary registers
+ * - r27 is used as the rgctx/imt register
+ * - r28 is used to access arguments passed on the stack
+ * - d15/d16 are used as fp temporary registers
+ */
+
+#define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
+
+#define FP_TEMP_REG ARMREG_D16
+#define FP_TEMP_REG2 ARMREG_D17
+
+#define THUNK_SIZE (4 * 4)
+
+/* The single step trampoline */
+static gpointer ss_trampoline;
+
+/* The breakpoint trampoline */
+static gpointer bp_trampoline;
+
+static gboolean ios_abi;
+
+static __attribute__((warn_unused_result)) guint8* emit_load_regset (guint8 *code, guint64 regs, int basereg, int offset);
+
+const char*
+mono_arch_regname (int reg)
+{
+ static const char * rnames[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
+ "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19",
+ "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "fp",
+ "lr", "sp"
+ };
+ if (reg >= 0 && reg < 32)
+ return rnames [reg];
+ return "unknown";
+}
+
+const char*
+mono_arch_fregname (int reg)
+{
+ static const char * rnames[] = {
+ "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "d8", "d9",
+ "d10", "d11", "d12", "d13", "d14", "d15", "d16", "d17", "d18", "d19",
+ "d20", "d21", "d22", "d23", "d24", "d25", "d26", "d27", "d28", "d29",
+ "d30", "d31"
+ };
+ if (reg >= 0 && reg < 32)
+ return rnames [reg];
+ return "unknown fp";
+}
+
+int
+mono_arch_get_argument_info (MonoMethodSignature *csig, int param_count, MonoJitArgumentInfo *arg_info)
+{
+ NOT_IMPLEMENTED;
+ return 0;
+}
+
+#define MAX_ARCH_DELEGATE_PARAMS 7
+
+static gpointer
+get_delegate_invoke_impl (gboolean has_target, gboolean param_count, guint32 *code_size)
+{
+ guint8 *code, *start;
+
+ if (has_target) {
+ start = code = mono_global_codeman_reserve (12);
+
+ /* Replace the this argument with the target */
+ arm_ldrx (code, ARMREG_IP0, ARMREG_R0, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr));
+ arm_ldrx (code, ARMREG_R0, ARMREG_R0, MONO_STRUCT_OFFSET (MonoDelegate, target));
+ arm_brx (code, ARMREG_IP0);
+
+ g_assert ((code - start) <= 12);
+
+ mono_arch_flush_icache (start, 12);
+ } else {
+ int size, i;
+
+ size = 8 + param_count * 4;
+ start = code = mono_global_codeman_reserve (size);
+
+ arm_ldrx (code, ARMREG_IP0, ARMREG_R0, MONO_STRUCT_OFFSET (MonoDelegate, method_ptr));
+ /* slide down the arguments */
+ for (i = 0; i < param_count; ++i)
+ arm_movx (code, i, i + 1);
+ arm_brx (code, ARMREG_IP0);
+
+ g_assert ((code - start) <= size);
+
+ mono_arch_flush_icache (start, size);
+ }
+
+ if (code_size)
+ *code_size = code - start;
+
+ return start;
+}
+
+/*
+ * mono_arch_get_delegate_invoke_impls:
+ *
+ * Return a list of MonoAotTrampInfo structures for the delegate invoke impl
+ * trampolines.
+ */
+GSList*
+mono_arch_get_delegate_invoke_impls (void)
+{
+ GSList *res = NULL;
+ guint8 *code;
+ guint32 code_len;
+ int i;
+ char *tramp_name;
+
+ code = get_delegate_invoke_impl (TRUE, 0, &code_len);
+ res = g_slist_prepend (res, mono_tramp_info_create ("delegate_invoke_impl_has_target", code, code_len, NULL, NULL));
+
+ for (i = 0; i <= MAX_ARCH_DELEGATE_PARAMS; ++i) {
+ code = get_delegate_invoke_impl (FALSE, i, &code_len);
+ tramp_name = g_strdup_printf ("delegate_invoke_impl_target_%d", i);
+ res = g_slist_prepend (res, mono_tramp_info_create (tramp_name, code, code_len, NULL, NULL));
+ g_free (tramp_name);
+ }
+
+ return res;
+}
+
+gpointer
+mono_arch_get_delegate_invoke_impl (MonoMethodSignature *sig, gboolean has_target)
+{
+ guint8 *code, *start;
+
+ /*
+ * vtypes are returned in registers, or using the dedicated r8 register, so
+ * they can be supported by delegate invokes.
+ */
+
+ if (has_target) {
+ static guint8* cached = NULL;
+
+ if (cached)
+ return cached;
+
+ if (mono_aot_only)
+ start = mono_aot_get_trampoline ("delegate_invoke_impl_has_target");
+ else
+ start = get_delegate_invoke_impl (TRUE, 0, NULL);
+ mono_memory_barrier ();
+ cached = start;
+ return cached;
+ } else {
+ static guint8* cache [MAX_ARCH_DELEGATE_PARAMS + 1] = {NULL};
+ int i;
+
+ if (sig->param_count > MAX_ARCH_DELEGATE_PARAMS)
+ return NULL;
+ for (i = 0; i < sig->param_count; ++i)
+ if (!mono_is_regsize_var (sig->params [i]))
+ return NULL;
+
+ code = cache [sig->param_count];
+ if (code)
+ return code;
+
+ if (mono_aot_only) {
+ char *name = g_strdup_printf ("delegate_invoke_impl_target_%d", sig->param_count);
+ start = mono_aot_get_trampoline (name);
+ g_free (name);
+ } else {
+ start = get_delegate_invoke_impl (FALSE, sig->param_count, NULL);
+ }
+ mono_memory_barrier ();
+ cache [sig->param_count] = start;
+ return start;
+ }
+
+ return NULL;
+}
+
+gpointer
+mono_arch_get_delegate_virtual_invoke_impl (MonoMethodSignature *sig, MonoMethod *method, int offset, gboolean load_imt_reg)
+{
+ return NULL;
+}
+
+gpointer
+mono_arch_get_this_arg_from_call (mgreg_t *regs, guint8 *code)
+{
+ return (gpointer)regs [ARMREG_R0];
+}
+
+void
+mono_arch_cpu_init (void)
+{
+}
+
+void
+mono_arch_init (void)
+{
+ mono_aot_register_jit_icall ("mono_arm_throw_exception", mono_arm_throw_exception);
+ mono_aot_register_jit_icall ("mono_arm_resume_unwind", mono_arm_resume_unwind);
+
+ if (!mono_aot_only)
+ bp_trampoline = mini_get_breakpoint_trampoline ();
+
+ mono_arm_gsharedvt_init ();
+
+#if defined(TARGET_IOS)
+ ios_abi = TRUE;
+#endif
+}
+
+void
+mono_arch_cleanup (void)
+{
+}
+
+guint32
+mono_arch_cpu_optimizations (guint32 *exclude_mask)
+{
+ *exclude_mask = 0;
+ return 0;
+}
+
+guint32
+mono_arch_cpu_enumerate_simd_versions (void)
+{
+ return 0;
+}
+
+void
+mono_arch_register_lowlevel_calls (void)
+{
+}
+
+void
+mono_arch_finish_init (void)
+{
+}
+
+/* The maximum length is 2 instructions */
+static guint8*
+emit_imm (guint8 *code, int dreg, int imm)
+{
+ // FIXME: Optimize this
+ if (imm < 0) {
+ gint64 limm = imm;
+ arm_movnx (code, dreg, (~limm) & 0xffff, 0);
+ arm_movkx (code, dreg, (limm >> 16) & 0xffff, 16);
+ } else {
+ arm_movzx (code, dreg, imm & 0xffff, 0);
+ if (imm >> 16)
+ arm_movkx (code, dreg, (imm >> 16) & 0xffff, 16);
+ }
+
+ return code;
+}
+
+/* The maximum length is 4 instructions */
+static guint8*
+emit_imm64 (guint8 *code, int dreg, guint64 imm)
+{
+ // FIXME: Optimize this
+ arm_movzx (code, dreg, imm & 0xffff, 0);
+ if ((imm >> 16) & 0xffff)
+ arm_movkx (code, dreg, (imm >> 16) & 0xffff, 16);
+ if ((imm >> 32) & 0xffff)
+ arm_movkx (code, dreg, (imm >> 32) & 0xffff, 32);
+ if ((imm >> 48) & 0xffff)
+ arm_movkx (code, dreg, (imm >> 48) & 0xffff, 48);
+
+ return code;
+}
+
+guint8*
+mono_arm_emit_imm64 (guint8 *code, int dreg, gint64 imm)
+{
+ return emit_imm64 (code, dreg, imm);
+}
+
+/*
+ * emit_imm_template:
+ *
+ * Emit a patchable code sequence for constructing a 64 bit immediate.
+ */
+static guint8*
+emit_imm64_template (guint8 *code, int dreg)
+{
+ arm_movzx (code, dreg, 0, 0);
+ arm_movkx (code, dreg, 0, 16);
+ arm_movkx (code, dreg, 0, 32);
+ arm_movkx (code, dreg, 0, 48);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_addw_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ if (!arm_is_arith_imm (imm)) {
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_addw (code, dreg, sreg, ARMREG_LR);
+ } else {
+ arm_addw_imm (code, dreg, sreg, imm);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_addx_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ if (!arm_is_arith_imm (imm)) {
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_addx (code, dreg, sreg, ARMREG_LR);
+ } else {
+ arm_addx_imm (code, dreg, sreg, imm);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_subw_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ if (!arm_is_arith_imm (imm)) {
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_subw (code, dreg, sreg, ARMREG_LR);
+ } else {
+ arm_subw_imm (code, dreg, sreg, imm);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_subx_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ if (!arm_is_arith_imm (imm)) {
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_subx (code, dreg, sreg, ARMREG_LR);
+ } else {
+ arm_subx_imm (code, dreg, sreg, imm);
+ }
+ return code;
+}
+
+/* Emit sp+=imm. Clobbers ip0/ip1 */
+static inline __attribute__((warn_unused_result)) guint8*
+emit_addx_sp_imm (guint8 *code, int imm)
+{
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_movspx (code, ARMREG_IP1, ARMREG_SP);
+ arm_addx (code, ARMREG_IP1, ARMREG_IP1, ARMREG_IP0);
+ arm_movspx (code, ARMREG_SP, ARMREG_IP1);
+ return code;
+}
+
+/* Emit sp-=imm. Clobbers ip0/ip1 */
+static inline __attribute__((warn_unused_result)) guint8*
+emit_subx_sp_imm (guint8 *code, int imm)
+{
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_movspx (code, ARMREG_IP1, ARMREG_SP);
+ arm_subx (code, ARMREG_IP1, ARMREG_IP1, ARMREG_IP0);
+ arm_movspx (code, ARMREG_SP, ARMREG_IP1);
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_andw_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_andw (code, dreg, sreg, ARMREG_LR);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_andx_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_andx (code, dreg, sreg, ARMREG_LR);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_orrw_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_orrw (code, dreg, sreg, ARMREG_LR);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_orrx_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_orrx (code, dreg, sreg, ARMREG_LR);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_eorw_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_eorw (code, dreg, sreg, ARMREG_LR);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_eorx_imm (guint8 *code, int dreg, int sreg, int imm)
+{
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_eorx (code, dreg, sreg, ARMREG_LR);
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_cmpw_imm (guint8 *code, int sreg, int imm)
+{
+ if (imm == 0) {
+ arm_cmpw (code, sreg, ARMREG_RZR);
+ } else {
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_cmpw (code, sreg, ARMREG_LR);
+ }
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_cmpx_imm (guint8 *code, int sreg, int imm)
+{
+ if (imm == 0) {
+ arm_cmpx (code, sreg, ARMREG_RZR);
+ } else {
+ // FIXME:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_cmpx (code, sreg, ARMREG_LR);
+ }
+
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_strb (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_strb_imm (imm)) {
+ arm_strb (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_strb_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_strh (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_strh_imm (imm)) {
+ arm_strh (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_strh_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_strw (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_strw_imm (imm)) {
+ arm_strw (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_strw_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_strfpw (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_strw_imm (imm)) {
+ arm_strfpw (code, rt, rn, imm);
+ } else {
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_addx (code, ARMREG_IP0, rn, ARMREG_IP0);
+ arm_strfpw (code, rt, ARMREG_IP0, 0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_strfpx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_strx_imm (imm)) {
+ arm_strfpx (code, rt, rn, imm);
+ } else {
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_addx (code, ARMREG_IP0, rn, ARMREG_IP0);
+ arm_strfpx (code, rt, ARMREG_IP0, 0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_strx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_strx_imm (imm)) {
+ arm_strx (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_strx_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrb (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 1)) {
+ arm_ldrb (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrb_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrsbx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 1)) {
+ arm_ldrsbx (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrsbx_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrh (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 2)) {
+ arm_ldrh (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrh_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrshx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 2)) {
+ arm_ldrshx (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrshx_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrswx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 4)) {
+ arm_ldrswx (code, rt, rn, imm);
+ } else {
+ g_assert (rt != ARMREG_IP0);
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrswx_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrw (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 4)) {
+ arm_ldrw (code, rt, rn, imm);
+ } else {
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrw_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 8)) {
+ arm_ldrx (code, rt, rn, imm);
+ } else {
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_ldrx_reg (code, rt, rn, ARMREG_IP0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrfpw (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 4)) {
+ arm_ldrfpw (code, rt, rn, imm);
+ } else {
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_addx (code, ARMREG_IP0, rn, ARMREG_IP0);
+ arm_ldrfpw (code, rt, ARMREG_IP0, 0);
+ }
+ return code;
+}
+
+static inline __attribute__((warn_unused_result)) guint8*
+emit_ldrfpx (guint8 *code, int rt, int rn, int imm)
+{
+ if (arm_is_pimm12_scaled (imm, 8)) {
+ arm_ldrfpx (code, rt, rn, imm);
+ } else {
+ g_assert (rn != ARMREG_IP0);
+ code = emit_imm (code, ARMREG_IP0, imm);
+ arm_addx (code, ARMREG_IP0, rn, ARMREG_IP0);
+ arm_ldrfpx (code, rt, ARMREG_IP0, 0);
+ }
+ return code;
+}
+
+guint8*
+mono_arm_emit_ldrx (guint8 *code, int rt, int rn, int imm)
+{
+ return emit_ldrx (code, rt, rn, imm);
+}
+
+static guint8*
+emit_call (MonoCompile *cfg, guint8* code, guint32 patch_type, gconstpointer data)
+{
+ /*
+ mono_add_patch_info_rel (cfg, code - cfg->native_code, patch_type, data, MONO_R_ARM64_IMM);
+ code = emit_imm64_template (code, ARMREG_LR);
+ arm_blrx (code, ARMREG_LR);
+ */
+ mono_add_patch_info_rel (cfg, code - cfg->native_code, patch_type, data, MONO_R_ARM64_BL);
+ arm_bl (code, code);
+ cfg->thunk_area += THUNK_SIZE;
+ return code;
+}
+
+static guint8*
+emit_aotconst_full (MonoCompile *cfg, MonoJumpInfo **ji, guint8 *code, guint8 *start, int dreg, guint32 patch_type, gconstpointer data)
+{
+ if (cfg)
+ mono_add_patch_info (cfg, code - cfg->native_code, patch_type, data);
+ else
+ *ji = mono_patch_info_list_prepend (*ji, code - start, patch_type, data);
+ /* See arch_emit_got_access () in aot-compiler.c */
+ arm_ldrx_lit (code, dreg, 0);
+ arm_nop (code);
+ arm_nop (code);
+ return code;
+}
+
+static guint8*
+emit_aotconst (MonoCompile *cfg, guint8 *code, int dreg, guint32 patch_type, gconstpointer data)
+{
+ return emit_aotconst_full (cfg, NULL, code, NULL, dreg, patch_type, data);
+}
+
+/*
+ * mono_arm_emit_aotconst:
+ *
+ * Emit code to load an AOT constant into DREG. Usable from trampolines.
+ */
+guint8*
+mono_arm_emit_aotconst (gpointer ji, guint8 *code, guint8 *code_start, int dreg, guint32 patch_type, gconstpointer data)
+{
+ return emit_aotconst_full (NULL, (MonoJumpInfo**)ji, code, code_start, dreg, patch_type, data);
+}
+
+static guint8*
+emit_tls_get (guint8 *code, int dreg, int tls_offset)
+{
+ arm_mrs (code, dreg, ARM_MRS_REG_TPIDR_EL0);
+ if (tls_offset < 256) {
+ arm_ldrx (code, dreg, dreg, tls_offset);
+ } else {
+ code = emit_addx_imm (code, dreg, dreg, tls_offset);
+ arm_ldrx (code, dreg, dreg, 0);
+ }
+ return code;
+}
+
+static guint8*
+emit_tls_get_reg (guint8 *code, int dreg, int offset_reg)
+{
+ g_assert (offset_reg != ARMREG_IP0);
+ arm_mrs (code, ARMREG_IP0, ARM_MRS_REG_TPIDR_EL0);
+ arm_ldrx_reg (code, dreg, ARMREG_IP0, offset_reg);
+ return code;
+}
+
+static guint8*
+emit_tls_set (guint8 *code, int sreg, int tls_offset)
+{
+ int tmpreg = ARMREG_IP0;
+
+ g_assert (sreg != tmpreg);
+ arm_mrs (code, tmpreg, ARM_MRS_REG_TPIDR_EL0);
+ if (tls_offset < 256) {
+ arm_strx (code, sreg, tmpreg, tls_offset);
+ } else {
+ code = emit_addx_imm (code, tmpreg, tmpreg, tls_offset);
+ arm_strx (code, sreg, tmpreg, 0);
+ }
+ return code;
+}
+
+
+static guint8*
+emit_tls_set_reg (guint8 *code, int sreg, int offset_reg)
+{
+ int tmpreg = ARMREG_IP0;
+
+ g_assert (sreg != tmpreg);
+ arm_mrs (code, tmpreg, ARM_MRS_REG_TPIDR_EL0);
+ arm_strx_reg (code, sreg, tmpreg, offset_reg);
+ return code;
+}
+
+/*
+ * Emits
+ * - mov sp, fp
+ * - ldrp [fp, lr], [sp], !stack_offfset
+ * Clobbers TEMP_REGS.
+ */
+__attribute__((warn_unused_result)) guint8*
+mono_arm_emit_destroy_frame (guint8 *code, int stack_offset, guint64 temp_regs)
+{
+ arm_movspx (code, ARMREG_SP, ARMREG_FP);
+
+ if (arm_is_ldpx_imm (stack_offset)) {
+ arm_ldpx_post (code, ARMREG_FP, ARMREG_LR, ARMREG_SP, stack_offset);
+ } else {
+ arm_ldpx (code, ARMREG_FP, ARMREG_LR, ARMREG_SP, 0);
+ /* sp += stack_offset */
+ g_assert (temp_regs & (1 << ARMREG_IP0));
+ if (temp_regs & (1 << ARMREG_IP1)) {
+ code = emit_addx_sp_imm (code, stack_offset);
+ } else {
+ int imm = stack_offset;
+
+ /* Can't use addx_sp_imm () since we can't clobber ip0/ip1 */
+ arm_addx_imm (code, ARMREG_IP0, ARMREG_SP, 0);
+ while (imm > 256) {
+ arm_addx_imm (code, ARMREG_IP0, ARMREG_IP0, 256);
+ imm -= 256;
+ }
+ arm_addx_imm (code, ARMREG_SP, ARMREG_IP0, imm);
+ }
+ }
+ return code;
+}
+
+#define is_call_imm(diff) ((gint)(diff) >= -33554432 && (gint)(diff) <= 33554431)
+
+static guint8*
+emit_thunk (guint8 *code, gconstpointer target)
+{
+ guint8 *p = code;
+
+ arm_ldrx_lit (code, ARMREG_IP0, code + 8);
+ arm_brx (code, ARMREG_IP0);
+ *(guint64*)code = (guint64)target;
+
+ mono_arch_flush_icache (p, code - p);
+ return code;
+}
+
+static gpointer
+create_thunk (MonoCompile *cfg, MonoDomain *domain, guchar *code, const guchar *target)
+{
+ MonoJitInfo *ji;
+ MonoThunkJitInfo *info;
+ guint8 *thunks, *p;
+ int thunks_size;
+ guint8 *orig_target;
+ guint8 *target_thunk;
+
+ if (!domain)
+ domain = mono_domain_get ();
+
+ if (cfg) {
+ /*
+ * This can be called multiple times during JITting,
+ * save the current position in cfg->arch to avoid
+ * doing a O(n^2) search.
+ */
+ if (!cfg->arch.thunks) {
+ cfg->arch.thunks = cfg->thunks;
+ cfg->arch.thunks_size = cfg->thunk_area;
+ }
+ thunks = cfg->arch.thunks;
+ thunks_size = cfg->arch.thunks_size;
+ if (!thunks_size) {
+ g_print ("thunk failed %p->%p, thunk space=%d method %s", code, target, thunks_size, mono_method_full_name (cfg->method, TRUE));
+ g_assert_not_reached ();
+ }
+
+ g_assert (*(guint32*)thunks == 0);
+ emit_thunk (thunks, target);
+
+ cfg->arch.thunks += THUNK_SIZE;
+ cfg->arch.thunks_size -= THUNK_SIZE;
+
+ return thunks;
+ } else {
+ ji = mini_jit_info_table_find (domain, (char*)code, NULL);
+ g_assert (ji);
+ info = mono_jit_info_get_thunk_info (ji);
+ g_assert (info);
+
+ thunks = (guint8*)ji->code_start + info->thunks_offset;
+ thunks_size = info->thunks_size;
+
+ orig_target = mono_arch_get_call_target (code + 4);
+
+ mono_domain_lock (domain);
+
+ target_thunk = NULL;
+ if (orig_target >= thunks && orig_target < thunks + thunks_size) {
+ /* The call already points to a thunk, because of trampolines etc. */
+ target_thunk = orig_target;
+ } else {
+ for (p = thunks; p < thunks + thunks_size; p += THUNK_SIZE) {
+ if (((guint32*)p) [0] == 0) {
+ /* Free entry */
+ target_thunk = p;
+ break;
+ } else if (((guint64*)p) [1] == (guint64)target) {
+ /* Thunk already points to target */
+ target_thunk = p;
+ break;
+ }
+ }
+ }
+
+ //printf ("THUNK: %p %p %p\n", code, target, target_thunk);
+
+ if (!target_thunk) {
+ mono_domain_unlock (domain);
+ g_print ("thunk failed %p->%p, thunk space=%d method %s", code, target, thunks_size, cfg ? mono_method_full_name (cfg->method, TRUE) : mono_method_full_name (jinfo_get_method (ji), TRUE));
+ g_assert_not_reached ();
+ }
+
+ emit_thunk (target_thunk, target);
+
+ mono_domain_unlock (domain);
+
+ return target_thunk;
+ }
+}
+
+static void
+arm_patch_full (MonoCompile *cfg, MonoDomain *domain, guint8 *code, guint8 *target, int relocation)
+{
+ switch (relocation) {
+ case MONO_R_ARM64_B:
+ arm_b (code, target);
+ break;
+ case MONO_R_ARM64_BCC: {
+ int cond;
+
+ cond = arm_get_bcc_cond (code);
+ arm_bcc (code, cond, target);
+ break;
+ }
+ case MONO_R_ARM64_CBZ:
+ arm_set_cbz_target (code, target);
+ break;
+ case MONO_R_ARM64_IMM: {
+ guint64 imm = (guint64)target;
+ int dreg;
+
+ /* emit_imm64_template () */
+ dreg = arm_get_movzx_rd (code);
+ arm_movzx (code, dreg, imm & 0xffff, 0);
+ arm_movkx (code, dreg, (imm >> 16) & 0xffff, 16);
+ arm_movkx (code, dreg, (imm >> 32) & 0xffff, 32);
+ arm_movkx (code, dreg, (imm >> 48) & 0xffff, 48);
+ break;
+ }
+ case MONO_R_ARM64_BL:
+ if (arm_is_bl_disp (code, target)) {
+ arm_bl (code, target);
+ } else {
+ gpointer thunk;
+
+ thunk = create_thunk (cfg, domain, code, target);
+ g_assert (arm_is_bl_disp (code, thunk));
+ arm_bl (code, thunk);
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+static void
+arm_patch_rel (guint8 *code, guint8 *target, int relocation)
+{
+ arm_patch_full (NULL, NULL, code, target, relocation);
+}
+
+void
+mono_arm_patch (guint8 *code, guint8 *target, int relocation)
+{
+ arm_patch_rel (code, target, relocation);
+}
+
+void
+mono_arch_patch_code_new (MonoCompile *cfg, MonoDomain *domain, guint8 *code, MonoJumpInfo *ji, gpointer target)
+{
+ guint8 *ip;
+
+ ip = ji->ip.i + code;
+
+ switch (ji->type) {
+ case MONO_PATCH_INFO_METHOD_JUMP:
+ /* ji->relocation is not set by the caller */
+ arm_patch_rel (ip, (guint8*)target, MONO_R_ARM64_B);
+ break;
+ default:
+ arm_patch_full (cfg, domain, ip, (guint8*)target, ji->relocation);
+ break;
+ }
+}
+
+void
+mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
+{
+}
+
+void
+mono_arch_flush_register_windows (void)
+{
+}
+
+MonoMethod*
+mono_arch_find_imt_method (mgreg_t *regs, guint8 *code)
+{
+ return (gpointer)regs [MONO_ARCH_RGCTX_REG];
+}
+
+MonoVTable*
+mono_arch_find_static_call_vtable (mgreg_t *regs, guint8 *code)
+{
+ return (gpointer)regs [MONO_ARCH_RGCTX_REG];
+}
+
+mgreg_t
+mono_arch_context_get_int_reg (MonoContext *ctx, int reg)
+{
+ return ctx->regs [reg];
+}
+
+void
+mono_arch_context_set_int_reg (MonoContext *ctx, int reg, mgreg_t val)
+{
+ ctx->regs [reg] = val;
+}
+
+/*
+ * mono_arch_set_target:
+ *
+ * Set the target architecture the JIT backend should generate code for, in the form
+ * of a GNU target triplet. Only used in AOT mode.
+ */
+void
+mono_arch_set_target (char *mtriple)
+{
+ if (strstr (mtriple, "darwin") || strstr (mtriple, "ios")) {
+ ios_abi = TRUE;
+ }
+}
+
+static void
+add_general (CallInfo *cinfo, ArgInfo *ainfo, int size, gboolean sign)
+{
+ if (cinfo->gr >= PARAM_REGS) {
+ ainfo->storage = ArgOnStack;
+ if (ios_abi) {
+ /* Assume size == align */
+ cinfo->stack_usage = ALIGN_TO (cinfo->stack_usage, size);
+ ainfo->offset = cinfo->stack_usage;
+ ainfo->slot_size = size;
+ ainfo->sign = sign;
+ cinfo->stack_usage += size;
+ } else {
+ ainfo->offset = cinfo->stack_usage;
+ ainfo->slot_size = 8;
+ ainfo->sign = FALSE;
+ /* Put arguments into 8 byte aligned stack slots */
+ cinfo->stack_usage += 8;
+ }
+ } else {
+ ainfo->storage = ArgInIReg;
+ ainfo->reg = cinfo->gr;
+ cinfo->gr ++;
+ }
+}
+
+static void
+add_fp (CallInfo *cinfo, ArgInfo *ainfo, gboolean single)
+{
+ int size = single ? 4 : 8;
+
+ if (cinfo->fr >= FP_PARAM_REGS) {
+ ainfo->storage = single ? ArgOnStackR4 : ArgOnStackR8;
+ if (ios_abi) {
+ cinfo->stack_usage = ALIGN_TO (cinfo->stack_usage, size);
+ ainfo->offset = cinfo->stack_usage;
+ ainfo->slot_size = size;
+ cinfo->stack_usage += size;
+ } else {
+ ainfo->offset = cinfo->stack_usage;
+ ainfo->slot_size = 8;
+ /* Put arguments into 8 byte aligned stack slots */
+ cinfo->stack_usage += 8;
+ }
+ } else {
+ if (single)
+ ainfo->storage = ArgInFRegR4;
+ else
+ ainfo->storage = ArgInFReg;
+ ainfo->reg = cinfo->fr;
+ cinfo->fr ++;
+ }
+}
+
+static gboolean
+is_hfa (MonoType *t, int *out_nfields, int *out_esize, int *field_offsets)
+{
+ MonoClass *klass;
+ gpointer iter;
+ MonoClassField *field;
+ MonoType *ftype, *prev_ftype = NULL;
+ int i, nfields = 0;
+
+ klass = mono_class_from_mono_type (t);
+ iter = NULL;
+ while ((field = mono_class_get_fields (klass, &iter))) {
+ if (field->type->attrs & FIELD_ATTRIBUTE_STATIC)
+ continue;
+ ftype = mono_field_get_type (field);
+ ftype = mini_get_underlying_type (ftype);
+
+ if (MONO_TYPE_ISSTRUCT (ftype)) {
+ int nested_nfields, nested_esize;
+ int nested_field_offsets [16];
+
+ if (!is_hfa (ftype, &nested_nfields, &nested_esize, nested_field_offsets))
+ return FALSE;
+ if (nested_esize == 4)
+ ftype = &mono_defaults.single_class->byval_arg;
+ else
+ ftype = &mono_defaults.double_class->byval_arg;
+ if (prev_ftype && prev_ftype->type != ftype->type)
+ return FALSE;
+ prev_ftype = ftype;
+ for (i = 0; i < nested_nfields; ++i) {
+ if (nfields + i < 4)
+ field_offsets [nfields + i] = field->offset - sizeof (MonoObject) + nested_field_offsets [i];
+ }
+ nfields += nested_nfields;
+ } else {
+ if (!(!ftype->byref && (ftype->type == MONO_TYPE_R4 || ftype->type == MONO_TYPE_R8)))
+ return FALSE;
+ if (prev_ftype && prev_ftype->type != ftype->type)
+ return FALSE;
+ prev_ftype = ftype;
+ if (nfields < 4)
+ field_offsets [nfields] = field->offset - sizeof (MonoObject);
+ nfields ++;
+ }
+ }
+ if (nfields == 0 || nfields > 4)
+ return FALSE;
+ *out_nfields = nfields;
+ *out_esize = prev_ftype->type == MONO_TYPE_R4 ? 4 : 8;
+ return TRUE;
+}
+
+static void
+add_valuetype (CallInfo *cinfo, ArgInfo *ainfo, MonoType *t)
+{
+ int i, size, align_size, nregs, nfields, esize;
+ int field_offsets [16];
+ guint32 align;
+
+ size = mini_type_stack_size_full (t, &align, FALSE);
+ align_size = ALIGN_TO (size, 8);
+
+ nregs = size / 8;
+ if (is_hfa (t, &nfields, &esize, field_offsets)) {
+ /*
+ * The struct might include nested float structs aligned at 8,
+ * so need to keep track of the offsets of the individual fields.
+ */
+ if (cinfo->fr + nfields <= FP_PARAM_REGS) {
+ ainfo->storage = ArgHFA;
+ ainfo->reg = cinfo->fr;
+ ainfo->nregs = nfields;
+ ainfo->size = size;
+ ainfo->esize = esize;
+ for (i = 0; i < nfields; ++i)
+ ainfo->foffsets [i] = field_offsets [i];
+ cinfo->fr += ainfo->nregs;
+ } else {
+ ainfo->nfregs_to_skip = FP_PARAM_REGS > cinfo->fr ? FP_PARAM_REGS - cinfo->fr : 0;
+ cinfo->fr = FP_PARAM_REGS;
+ size = ALIGN_TO (size, 8);
+ ainfo->storage = ArgVtypeOnStack;
+ ainfo->offset = cinfo->stack_usage;
+ ainfo->size = size;
+ ainfo->hfa = TRUE;
+ ainfo->nregs = nfields;
+ ainfo->esize = esize;
+ cinfo->stack_usage += size;
+ }
+ return;
+ }
+
+ if (align_size > 16) {
+ ainfo->storage = ArgVtypeByRef;
+ ainfo->size = size;
+ return;
+ }
+
+ if (cinfo->gr + nregs > PARAM_REGS) {
+ size = ALIGN_TO (size, 8);
+ ainfo->storage = ArgVtypeOnStack;
+ ainfo->offset = cinfo->stack_usage;
+ ainfo->size = size;
+ cinfo->stack_usage += size;
+ cinfo->gr = PARAM_REGS;
+ } else {
+ ainfo->storage = ArgVtypeInIRegs;
+ ainfo->reg = cinfo->gr;
+ ainfo->nregs = nregs;
+ ainfo->size = size;
+ cinfo->gr += nregs;
+ }
+}
+
+static void
+add_param (CallInfo *cinfo, ArgInfo *ainfo, MonoType *t)
+{
+ MonoType *ptype;
+
+ ptype = mini_get_underlying_type (t);
+ switch (ptype->type) {
+ case MONO_TYPE_I1:
+ add_general (cinfo, ainfo, 1, TRUE);
+ break;
+ case MONO_TYPE_BOOLEAN:
+ case MONO_TYPE_U1:
+ add_general (cinfo, ainfo, 1, FALSE);
+ break;
+ case MONO_TYPE_I2:
+ add_general (cinfo, ainfo, 2, TRUE);
+ break;
+ case MONO_TYPE_U2:
+ case MONO_TYPE_CHAR:
+ add_general (cinfo, ainfo, 2, FALSE);
+ break;
+ case MONO_TYPE_I4:
+ add_general (cinfo, ainfo, 4, TRUE);
+ break;
+ case MONO_TYPE_U4:
+ add_general (cinfo, ainfo, 4, FALSE);
+ break;
+ case MONO_TYPE_I:
+ case MONO_TYPE_U:
+ case MONO_TYPE_PTR:
+ case MONO_TYPE_FNPTR:
+ case MONO_TYPE_CLASS:
+ case MONO_TYPE_OBJECT:
+ case MONO_TYPE_SZARRAY:
+ case MONO_TYPE_ARRAY:
+ case MONO_TYPE_STRING:
+ case MONO_TYPE_U8:
+ case MONO_TYPE_I8:
+ add_general (cinfo, ainfo, 8, FALSE);
+ break;
+ case MONO_TYPE_R8:
+ add_fp (cinfo, ainfo, FALSE);
+ break;
+ case MONO_TYPE_R4:
+ add_fp (cinfo, ainfo, TRUE);
+ break;
+ case MONO_TYPE_VALUETYPE:
+ case MONO_TYPE_TYPEDBYREF:
+ add_valuetype (cinfo, ainfo, ptype);
+ break;
+ case MONO_TYPE_VOID:
+ ainfo->storage = ArgNone;
+ break;
+ case MONO_TYPE_GENERICINST:
+ if (!mono_type_generic_inst_is_valuetype (ptype)) {
+ add_general (cinfo, ainfo, 8, FALSE);
+ } else if (mini_is_gsharedvt_variable_type (ptype)) {
+ /*
+ * Treat gsharedvt arguments as large vtypes
+ */
+ ainfo->storage = ArgVtypeByRef;
+ ainfo->gsharedvt = TRUE;
+ } else {
+ add_valuetype (cinfo, ainfo, ptype);
+ }
+ break;
+ case MONO_TYPE_VAR:
+ case MONO_TYPE_MVAR:
+ g_assert (mini_is_gsharedvt_type (ptype));
+ ainfo->storage = ArgVtypeByRef;
+ ainfo->gsharedvt = TRUE;
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+}
+
+/*
+ * get_call_info:
+ *
+ * Obtain information about a call according to the calling convention.
+ */
+static CallInfo*
+get_call_info (MonoMemPool *mp, MonoMethodSignature *sig)
+{
+ CallInfo *cinfo;
+ ArgInfo *ainfo;
+ int n, pstart, pindex;
+
+ n = sig->hasthis + sig->param_count;
+
+ if (mp)
+ cinfo = mono_mempool_alloc0 (mp, sizeof (CallInfo) + (sizeof (ArgInfo) * n));
+ else
+ cinfo = g_malloc0 (sizeof (CallInfo) + (sizeof (ArgInfo) * n));
+
+ cinfo->nargs = n;
+
+ /* Return value */
+ add_param (cinfo, &cinfo->ret, sig->ret);
+ if (cinfo->ret.storage == ArgVtypeByRef)
+ cinfo->ret.reg = ARMREG_R8;
+ /* Reset state */
+ cinfo->gr = 0;
+ cinfo->fr = 0;
+ cinfo->stack_usage = 0;
+
+ /* Parameters */
+ if (sig->hasthis)
+ add_general (cinfo, cinfo->args + 0, 8, FALSE);
+ pstart = 0;
+ for (pindex = pstart; pindex < sig->param_count; ++pindex) {
+ ainfo = cinfo->args + sig->hasthis + pindex;
+
+ if ((sig->call_convention == MONO_CALL_VARARG) && (pindex == sig->sentinelpos)) {
+ /* Prevent implicit arguments and sig_cookie from
+ being passed in registers */
+ cinfo->gr = PARAM_REGS;
+ cinfo->fr = FP_PARAM_REGS;
+ /* Emit the signature cookie just before the implicit arguments */
+ add_param (cinfo, &cinfo->sig_cookie, &mono_defaults.int_class->byval_arg);
+ }
+
+ add_param (cinfo, ainfo, sig->params [pindex]);
+ if (ainfo->storage == ArgVtypeByRef) {
+ /* Pass the argument address in the next register */
+ if (cinfo->gr >= PARAM_REGS) {
+ ainfo->storage = ArgVtypeByRefOnStack;
+ ainfo->offset = cinfo->stack_usage;
+ cinfo->stack_usage += 8;
+ } else {
+ ainfo->reg = cinfo->gr;
+ cinfo->gr ++;
+ }
+ }
+ }
+
+ /* Handle the case where there are no implicit arguments */
+ if ((sig->call_convention == MONO_CALL_VARARG) && (pindex == sig->sentinelpos)) {
+ /* Prevent implicit arguments and sig_cookie from
+ being passed in registers */
+ cinfo->gr = PARAM_REGS;
+ cinfo->fr = FP_PARAM_REGS;
+ /* Emit the signature cookie just before the implicit arguments */
+ add_param (cinfo, &cinfo->sig_cookie, &mono_defaults.int_class->byval_arg);
+ }
+
+ cinfo->stack_usage = ALIGN_TO (cinfo->stack_usage, MONO_ARCH_FRAME_ALIGNMENT);
+
+ return cinfo;
+}
+
+typedef struct {
+ MonoMethodSignature *sig;
+ CallInfo *cinfo;
+ MonoType *rtype;
+ MonoType **param_types;
+ int n_fpargs, n_fpret;
+} ArchDynCallInfo;
+
+static gboolean
+dyn_call_supported (CallInfo *cinfo, MonoMethodSignature *sig)
+{
+ int i;
+
+ if (sig->hasthis + sig->param_count > PARAM_REGS + DYN_CALL_STACK_ARGS)
+ return FALSE;
+
+ // FIXME: Add more cases
+ switch (cinfo->ret.storage) {
+ case ArgNone:
+ case ArgInIReg:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ case ArgVtypeByRef:
+ break;
+ case ArgVtypeInIRegs:
+ if (cinfo->ret.nregs > 2)
+ return FALSE;
+ break;
+ case ArgHFA:
+ break;
+ default:
+ return FALSE;
+ }
+
+ for (i = 0; i < cinfo->nargs; ++i) {
+ ArgInfo *ainfo = &cinfo->args [i];
+
+ switch (ainfo->storage) {
+ case ArgInIReg:
+ case ArgVtypeInIRegs:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ case ArgHFA:
+ case ArgVtypeByRef:
+ break;
+ case ArgOnStack:
+ if (ainfo->offset >= DYN_CALL_STACK_ARGS * sizeof (mgreg_t))
+ return FALSE;
+ break;
+ default:
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+MonoDynCallInfo*
+mono_arch_dyn_call_prepare (MonoMethodSignature *sig)
+{
+ ArchDynCallInfo *info;
+ CallInfo *cinfo;
+ int i;
+
+ cinfo = get_call_info (NULL, sig);
+
+ if (!dyn_call_supported (cinfo, sig)) {
+ g_free (cinfo);
+ return NULL;
+ }
+
+ info = g_new0 (ArchDynCallInfo, 1);
+ // FIXME: Preprocess the info to speed up start_dyn_call ()
+ info->sig = sig;
+ info->cinfo = cinfo;
+ info->rtype = mini_get_underlying_type (sig->ret);
+ info->param_types = g_new0 (MonoType*, sig->param_count);
+ for (i = 0; i < sig->param_count; ++i)
+ info->param_types [i] = mini_get_underlying_type (sig->params [i]);
+
+ switch (cinfo->ret.storage) {
+ case ArgInFReg:
+ case ArgInFRegR4:
+ info->n_fpret = 1;
+ break;
+ case ArgHFA:
+ info->n_fpret = cinfo->ret.nregs;
+ break;
+ default:
+ break;
+ }
+
+ return (MonoDynCallInfo*)info;
+}
+
+void
+mono_arch_dyn_call_free (MonoDynCallInfo *info)
+{
+ ArchDynCallInfo *ainfo = (ArchDynCallInfo*)info;
+
+ g_free (ainfo->cinfo);
+ g_free (ainfo->param_types);
+ g_free (ainfo);
+}
+
+static double
+bitcast_r4_to_r8 (float f)
+{
+ float *p = &f;
+
+ return *(double*)p;
+}
+
+static float
+bitcast_r8_to_r4 (double f)
+{
+ double *p = &f;
+
+ return *(float*)p;
+}
+
+void
+mono_arch_start_dyn_call (MonoDynCallInfo *info, gpointer **args, guint8 *ret, guint8 *buf, int buf_len)
+{
+ ArchDynCallInfo *dinfo = (ArchDynCallInfo*)info;
+ DynCallArgs *p = (DynCallArgs*)buf;
+ int aindex, arg_index, greg, i, pindex;
+ MonoMethodSignature *sig = dinfo->sig;
+ CallInfo *cinfo = dinfo->cinfo;
+ int buffer_offset = 0;
+
+ g_assert (buf_len >= sizeof (DynCallArgs));
+
+ p->res = 0;
+ p->ret = ret;
+ p->n_fpargs = dinfo->n_fpargs;
+ p->n_fpret = dinfo->n_fpret;
+
+ arg_index = 0;
+ greg = 0;
+ pindex = 0;
+
+ if (sig->hasthis)
+ p->regs [greg ++] = (mgreg_t)*(args [arg_index ++]);
+
+ if (cinfo->ret.storage == ArgVtypeByRef)
+ p->regs [ARMREG_R8] = (mgreg_t)ret;
+
+ for (aindex = pindex; aindex < sig->param_count; aindex++) {
+ MonoType *t = dinfo->param_types [aindex];
+ gpointer *arg = args [arg_index ++];
+ ArgInfo *ainfo = &cinfo->args [aindex + sig->hasthis];
+ int slot = -1;
+
+ if (ainfo->storage == ArgOnStack) {
+ slot = PARAM_REGS + 1 + (ainfo->offset / sizeof (mgreg_t));
+ } else {
+ slot = ainfo->reg;
+ }
+
+ if (t->byref) {
+ p->regs [slot] = (mgreg_t)*arg;
+ continue;
+ }
+
+ if (ios_abi && ainfo->storage == ArgOnStack) {
+ guint8 *stack_arg = (guint8*)&(p->regs [PARAM_REGS + 1]) + ainfo->offset;
+ gboolean handled = TRUE;
+
+ /* Special case arguments smaller than 1 machine word */
+ switch (t->type) {
+ case MONO_TYPE_BOOLEAN:
+ case MONO_TYPE_U1:
+ *(guint8*)stack_arg = *(guint8*)arg;
+ break;
+ case MONO_TYPE_I1:
+ *(gint8*)stack_arg = *(gint8*)arg;
+ break;
+ case MONO_TYPE_U2:
+ case MONO_TYPE_CHAR:
+ *(guint16*)stack_arg = *(guint16*)arg;
+ break;
+ case MONO_TYPE_I2:
+ *(gint16*)stack_arg = *(gint16*)arg;
+ break;
+ case MONO_TYPE_I4:
+ *(gint32*)stack_arg = *(gint32*)arg;
+ break;
+ case MONO_TYPE_U4:
+ *(guint32*)stack_arg = *(guint32*)arg;
+ break;
+ default:
+ handled = FALSE;
+ break;
+ }
+ if (handled)
+ continue;
+ }
+
+ switch (t->type) {
+ case MONO_TYPE_STRING:
+ case MONO_TYPE_CLASS:
+ case MONO_TYPE_ARRAY:
+ case MONO_TYPE_SZARRAY:
+ case MONO_TYPE_OBJECT:
+ case MONO_TYPE_PTR:
+ case MONO_TYPE_I:
+ case MONO_TYPE_U:
+ case MONO_TYPE_I8:
+ case MONO_TYPE_U8:
+ p->regs [slot] = (mgreg_t)*arg;
+ break;
+ case MONO_TYPE_BOOLEAN:
+ case MONO_TYPE_U1:
+ p->regs [slot] = *(guint8*)arg;
+ break;
+ case MONO_TYPE_I1:
+ p->regs [slot] = *(gint8*)arg;
+ break;
+ case MONO_TYPE_I2:
+ p->regs [slot] = *(gint16*)arg;
+ break;
+ case MONO_TYPE_U2:
+ case MONO_TYPE_CHAR:
+ p->regs [slot] = *(guint16*)arg;
+ break;
+ case MONO_TYPE_I4:
+ p->regs [slot] = *(gint32*)arg;
+ break;
+ case MONO_TYPE_U4:
+ p->regs [slot] = *(guint32*)arg;
+ break;
+ case MONO_TYPE_R4:
+ p->fpregs [ainfo->reg] = bitcast_r4_to_r8 (*(float*)arg);
+ p->n_fpargs ++;
+ break;
+ case MONO_TYPE_R8:
+ p->fpregs [ainfo->reg] = *(double*)arg;
+ p->n_fpargs ++;
+ break;
+ case MONO_TYPE_GENERICINST:
+ if (MONO_TYPE_IS_REFERENCE (t)) {
+ p->regs [slot] = (mgreg_t)*arg;
+ break;
+ } else {
+ if (t->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (t))) {
+ MonoClass *klass = mono_class_from_mono_type (t);
+ guint8 *nullable_buf;
+ int size;
+
+ /*
+ * Use p->buffer as a temporary buffer since the data needs to be available after this call
+ * if the nullable param is passed by ref.
+ */
+ size = mono_class_value_size (klass, NULL);
+ nullable_buf = p->buffer + buffer_offset;
+ buffer_offset += size;
+ g_assert (buffer_offset <= 256);
+
+ /* The argument pointed to by arg is either a boxed vtype or null */
+ mono_nullable_init (nullable_buf, (MonoObject*)arg, klass);
+
+ arg = (gpointer*)nullable_buf;
+ /* Fall though */
+ } else {
+ /* Fall though */
+ }
+ }
+ case MONO_TYPE_VALUETYPE:
+ switch (ainfo->storage) {
+ case ArgVtypeInIRegs:
+ for (i = 0; i < ainfo->nregs; ++i)
+ p->regs [slot ++] = ((mgreg_t*)arg) [i];
+ break;
+ case ArgHFA:
+ if (ainfo->esize == 4) {
+ for (i = 0; i < ainfo->nregs; ++i)
+ p->fpregs [ainfo->reg + i] = bitcast_r4_to_r8 (((float*)arg) [ainfo->foffsets [i] / 4]);
+ } else {
+ for (i = 0; i < ainfo->nregs; ++i)
+ p->fpregs [ainfo->reg + i] = ((double*)arg) [ainfo->foffsets [i] / 8];
+ }
+ p->n_fpargs += ainfo->nregs;
+ break;
+ case ArgVtypeByRef:
+ p->regs [slot] = (mgreg_t)arg;
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+ }
+}
+
+void
+mono_arch_finish_dyn_call (MonoDynCallInfo *info, guint8 *buf)
+{
+ ArchDynCallInfo *ainfo = (ArchDynCallInfo*)info;
+ CallInfo *cinfo = ainfo->cinfo;
+ DynCallArgs *args = (DynCallArgs*)buf;
+ MonoType *ptype = ainfo->rtype;
+ guint8 *ret = args->ret;
+ mgreg_t res = args->res;
+ mgreg_t res2 = args->res2;
+ int i;
+
+ if (cinfo->ret.storage == ArgVtypeByRef)
+ return;
+
+ switch (ptype->type) {
+ case MONO_TYPE_VOID:
+ *(gpointer*)ret = NULL;
+ break;
+ case MONO_TYPE_STRING:
+ case MONO_TYPE_CLASS:
+ case MONO_TYPE_ARRAY:
+ case MONO_TYPE_SZARRAY:
+ case MONO_TYPE_OBJECT:
+ case MONO_TYPE_I:
+ case MONO_TYPE_U:
+ case MONO_TYPE_PTR:
+ *(gpointer*)ret = (gpointer)res;
+ break;
+ case MONO_TYPE_I1:
+ *(gint8*)ret = res;
+ break;
+ case MONO_TYPE_U1:
+ case MONO_TYPE_BOOLEAN:
+ *(guint8*)ret = res;
+ break;
+ case MONO_TYPE_I2:
+ *(gint16*)ret = res;
+ break;
+ case MONO_TYPE_U2:
+ case MONO_TYPE_CHAR:
+ *(guint16*)ret = res;
+ break;
+ case MONO_TYPE_I4:
+ *(gint32*)ret = res;
+ break;
+ case MONO_TYPE_U4:
+ *(guint32*)ret = res;
+ break;
+ case MONO_TYPE_I8:
+ case MONO_TYPE_U8:
+ *(guint64*)ret = res;
+ break;
+ case MONO_TYPE_R4:
+ *(float*)ret = bitcast_r8_to_r4 (args->fpregs [0]);
+ break;
+ case MONO_TYPE_R8:
+ *(double*)ret = args->fpregs [0];
+ break;
+ case MONO_TYPE_GENERICINST:
+ if (MONO_TYPE_IS_REFERENCE (ptype)) {
+ *(gpointer*)ret = (gpointer)res;
+ break;
+ } else {
+ /* Fall though */
+ }
+ case MONO_TYPE_VALUETYPE:
+ switch (ainfo->cinfo->ret.storage) {
+ case ArgVtypeInIRegs:
+ *(mgreg_t*)ret = res;
+ if (ainfo->cinfo->ret.nregs > 1)
+ ((mgreg_t*)ret) [1] = res2;
+ break;
+ case ArgHFA:
+ /* Use the same area for returning fp values */
+ if (cinfo->ret.esize == 4) {
+ for (i = 0; i < cinfo->ret.nregs; ++i)
+ ((float*)ret) [cinfo->ret.foffsets [i] / 4] = bitcast_r8_to_r4 (args->fpregs [i]);
+ } else {
+ for (i = 0; i < cinfo->ret.nregs; ++i)
+ ((double*)ret) [cinfo->ret.foffsets [i] / 8] = args->fpregs [i];
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+#if __APPLE__
+void sys_icache_invalidate (void *start, size_t len);
+#endif
+
+void
+mono_arch_flush_icache (guint8 *code, gint size)
+{
+#ifndef MONO_CROSS_COMPILE
+#if __APPLE__
+ sys_icache_invalidate (code, size);
+#else
+ __clear_cache (code, code + size);
+#endif
+#endif
+}
+
+#ifndef DISABLE_JIT
+
+gboolean
+mono_arch_opcode_needs_emulation (MonoCompile *cfg, int opcode)
+{
+ NOT_IMPLEMENTED;
+ return FALSE;
+}
+
+GList *
+mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
+{
+ GList *vars = NULL;
+ int i;
+
+ for (i = 0; i < cfg->num_varinfo; i++) {
+ MonoInst *ins = cfg->varinfo [i];
+ MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
+
+ /* unused vars */
+ if (vmv->range.first_use.abs_pos >= vmv->range.last_use.abs_pos)
+ continue;
+
+ if ((ins->flags & (MONO_INST_IS_DEAD|MONO_INST_VOLATILE|MONO_INST_INDIRECT)) ||
+ (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
+ continue;
+
+ if (mono_is_regsize_var (ins->inst_vtype)) {
+ g_assert (MONO_VARINFO (cfg, i)->reg == -1);
+ g_assert (i == vmv->idx);
+ vars = g_list_prepend (vars, vmv);
+ }
+ }
+
+ vars = mono_varlist_sort (cfg, vars, 0);
+
+ return vars;
+}
+
+GList *
+mono_arch_get_global_int_regs (MonoCompile *cfg)
+{
+ GList *regs = NULL;
+ int i;
+
+ /* r28 is reserved for cfg->arch.args_reg */
+ /* r27 is reserved for the imt argument */
+ for (i = ARMREG_R19; i <= ARMREG_R26; ++i)
+ regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
+
+ return regs;
+}
+
+guint32
+mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
+{
+ MonoInst *ins = cfg->varinfo [vmv->idx];
+
+ if (ins->opcode == OP_ARG)
+ return 1;
+ else
+ return 2;
+}
+
+void
+mono_arch_create_vars (MonoCompile *cfg)
+{
+ MonoMethodSignature *sig;
+ CallInfo *cinfo;
+
+ sig = mono_method_signature (cfg->method);
+ if (!cfg->arch.cinfo)
+ cfg->arch.cinfo = get_call_info (cfg->mempool, sig);
+ cinfo = cfg->arch.cinfo;
+
+ if (cinfo->ret.storage == ArgVtypeByRef) {
+ cfg->vret_addr = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
+ cfg->vret_addr->flags |= MONO_INST_VOLATILE;
+ }
+
+ if (cfg->gen_sdb_seq_points) {
+ MonoInst *ins;
+
+ if (cfg->compile_aot) {
+ ins = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
+ ins->flags |= MONO_INST_VOLATILE;
+ cfg->arch.seq_point_info_var = ins;
+ }
+
+ ins = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
+ ins->flags |= MONO_INST_VOLATILE;
+ cfg->arch.ss_tramp_var = ins;
+
+ ins = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
+ ins->flags |= MONO_INST_VOLATILE;
+ cfg->arch.bp_tramp_var = ins;
+ }
+
+ if (cfg->method->save_lmf) {
+ cfg->create_lmf_var = TRUE;
+ cfg->lmf_ir = TRUE;
+#ifndef TARGET_MACH
+ cfg->lmf_ir_mono_lmf = TRUE;
+#endif
+ }
+}
+
+void
+mono_arch_allocate_vars (MonoCompile *cfg)
+{
+ MonoMethodSignature *sig;
+ MonoInst *ins;
+ CallInfo *cinfo;
+ ArgInfo *ainfo;
+ int i, offset, size, align;
+ guint32 locals_stack_size, locals_stack_align;
+ gint32 *offsets;
+
+ /*
+ * Allocate arguments and locals to either register (OP_REGVAR) or to a stack slot (OP_REGOFFSET).
+ * Compute cfg->stack_offset and update cfg->used_int_regs.
+ */
+
+ sig = mono_method_signature (cfg->method);
+
+ if (!cfg->arch.cinfo)
+ cfg->arch.cinfo = get_call_info (cfg->mempool, sig);
+ cinfo = cfg->arch.cinfo;
+
+ /*
+ * The ARM64 ABI always uses a frame pointer.
+ * The instruction set prefers positive offsets, so fp points to the bottom of the
+ * frame, and stack slots are at positive offsets.
+ * If some arguments are received on the stack, their offsets relative to fp can
+ * not be computed right now because the stack frame might grow due to spilling
+ * done by the local register allocator. To solve this, we reserve a register
+ * which points to them.
+ * The stack frame looks like this:
+ * args_reg -> <bottom of parent frame>
+ * <locals etc>
+ * fp -> <saved fp+lr>
+ * sp -> <localloc/params area>
+ */
+ cfg->frame_reg = ARMREG_FP;
+ cfg->flags |= MONO_CFG_HAS_SPILLUP;
+ offset = 0;
+
+ /* Saved fp+lr */
+ offset += 16;
+
+ if (cinfo->stack_usage) {
+ g_assert (!(cfg->used_int_regs & (1 << ARMREG_R28)));
+ cfg->arch.args_reg = ARMREG_R28;
+ cfg->used_int_regs |= 1 << ARMREG_R28;
+ }
+
+ if (cfg->method->save_lmf) {
+ /* The LMF var is allocated normally */
+ } else {
+ /* Callee saved regs */
+ cfg->arch.saved_gregs_offset = offset;
+ for (i = 0; i < 32; ++i)
+ if ((MONO_ARCH_CALLEE_SAVED_REGS & (1 << i)) && (cfg->used_int_regs & (1 << i)))
+ offset += 8;
+ }
+
+ /* Return value */
+ switch (cinfo->ret.storage) {
+ case ArgNone:
+ break;
+ case ArgInIReg:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ cfg->ret->opcode = OP_REGVAR;
+ cfg->ret->dreg = cinfo->ret.reg;
+ break;
+ case ArgVtypeInIRegs:
+ case ArgHFA:
+ /* Allocate a local to hold the result, the epilog will copy it to the correct place */
+ cfg->ret->opcode = OP_REGOFFSET;
+ cfg->ret->inst_basereg = cfg->frame_reg;
+ cfg->ret->inst_offset = offset;
+ if (cinfo->ret.storage == ArgHFA)
+ // FIXME:
+ offset += 64;
+ else
+ offset += 16;
+ break;
+ case ArgVtypeByRef:
+ /* This variable will be initalized in the prolog from R8 */
+ cfg->vret_addr->opcode = OP_REGOFFSET;
+ cfg->vret_addr->inst_basereg = cfg->frame_reg;
+ cfg->vret_addr->inst_offset = offset;
+ offset += 8;
+ if (G_UNLIKELY (cfg->verbose_level > 1)) {
+ printf ("vret_addr =");
+ mono_print_ins (cfg->vret_addr);
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ /* Arguments */
+ for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
+ ainfo = cinfo->args + i;
+
+ ins = cfg->args [i];
+ if (ins->opcode == OP_REGVAR)
+ continue;
+
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+
+ switch (ainfo->storage) {
+ case ArgInIReg:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ // FIXME: Use nregs/size
+ /* These will be copied to the stack in the prolog */
+ ins->inst_offset = offset;
+ offset += 8;
+ break;
+ case ArgOnStack:
+ case ArgOnStackR4:
+ case ArgOnStackR8:
+ case ArgVtypeOnStack:
+ /* These are in the parent frame */
+ g_assert (cfg->arch.args_reg);
+ ins->inst_basereg = cfg->arch.args_reg;
+ ins->inst_offset = ainfo->offset;
+ break;
+ case ArgVtypeInIRegs:
+ case ArgHFA:
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+ /* These arguments are saved to the stack in the prolog */
+ ins->inst_offset = offset;
+ if (cfg->verbose_level >= 2)
+ printf ("arg %d allocated to %s+0x%0x.\n", i, mono_arch_regname (ins->inst_basereg), (int)ins->inst_offset);
+ if (ainfo->storage == ArgHFA)
+ // FIXME:
+ offset += 64;
+ else
+ offset += 16;
+ break;
+ case ArgVtypeByRefOnStack: {
+ MonoInst *vtaddr;
+
+ if (ainfo->gsharedvt) {
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->arch.args_reg;
+ ins->inst_offset = ainfo->offset;
+ break;
+ }
+
+ /* The vtype address is in the parent frame */
+ g_assert (cfg->arch.args_reg);
+ MONO_INST_NEW (cfg, vtaddr, 0);
+ vtaddr->opcode = OP_REGOFFSET;
+ vtaddr->inst_basereg = cfg->arch.args_reg;
+ vtaddr->inst_offset = ainfo->offset;
+
+ /* Need an indirection */
+ ins->opcode = OP_VTARG_ADDR;
+ ins->inst_left = vtaddr;
+ break;
+ }
+ case ArgVtypeByRef: {
+ MonoInst *vtaddr;
+
+ if (ainfo->gsharedvt) {
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+ ins->inst_offset = offset;
+ offset += 8;
+ break;
+ }
+
+ /* The vtype address is in a register, will be copied to the stack in the prolog */
+ MONO_INST_NEW (cfg, vtaddr, 0);
+ vtaddr->opcode = OP_REGOFFSET;
+ vtaddr->inst_basereg = cfg->frame_reg;
+ vtaddr->inst_offset = offset;
+ offset += 8;
+
+ /* Need an indirection */
+ ins->opcode = OP_VTARG_ADDR;
+ ins->inst_left = vtaddr;
+ break;
+ }
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ }
+
+ /* Allocate these first so they have a small offset, OP_SEQ_POINT depends on this */
+ // FIXME: Allocate these to registers
+ ins = cfg->arch.seq_point_info_var;
+ if (ins) {
+ size = 8;
+ align = 8;
+ offset += align - 1;
+ offset &= ~(align - 1);
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+ ins->inst_offset = offset;
+ offset += size;
+ }
+ ins = cfg->arch.ss_tramp_var;
+ if (ins) {
+ size = 8;
+ align = 8;
+ offset += align - 1;
+ offset &= ~(align - 1);
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+ ins->inst_offset = offset;
+ offset += size;
+ }
+ ins = cfg->arch.bp_tramp_var;
+ if (ins) {
+ size = 8;
+ align = 8;
+ offset += align - 1;
+ offset &= ~(align - 1);
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+ ins->inst_offset = offset;
+ offset += size;
+ }
+
+ /* Locals */
+ offsets = mono_allocate_stack_slots (cfg, FALSE, &locals_stack_size, &locals_stack_align);
+ if (locals_stack_align)
+ offset = ALIGN_TO (offset, locals_stack_align);
+
+ for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
+ if (offsets [i] != -1) {
+ ins = cfg->varinfo [i];
+ ins->opcode = OP_REGOFFSET;
+ ins->inst_basereg = cfg->frame_reg;
+ ins->inst_offset = offset + offsets [i];
+ //printf ("allocated local %d to ", i); mono_print_tree_nl (ins);
+ }
+ }
+ offset += locals_stack_size;
+
+ offset = ALIGN_TO (offset, MONO_ARCH_FRAME_ALIGNMENT);
+
+ cfg->stack_offset = offset;
+}
+
+#ifdef ENABLE_LLVM
+LLVMCallInfo*
+mono_arch_get_llvm_call_info (MonoCompile *cfg, MonoMethodSignature *sig)
+{
+ int i, n;
+ CallInfo *cinfo;
+ ArgInfo *ainfo;
+ LLVMCallInfo *linfo;
+
+ n = sig->param_count + sig->hasthis;
+
+ cinfo = get_call_info (cfg->mempool, sig);
+
+ linfo = mono_mempool_alloc0 (cfg->mempool, sizeof (LLVMCallInfo) + (sizeof (LLVMArgInfo) * n));
+
+ switch (cinfo->ret.storage) {
+ case ArgInIReg:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ case ArgNone:
+ break;
+ case ArgVtypeByRef:
+ linfo->ret.storage = LLVMArgVtypeByRef;
+ break;
+ //
+ // FIXME: This doesn't work yet since the llvm backend represents these types as an i8
+ // array which is returned in int regs
+ //
+ case ArgHFA:
+ linfo->ret.storage = LLVMArgFpStruct;
+ linfo->ret.nslots = cinfo->ret.nregs;
+ linfo->ret.esize = cinfo->ret.esize;
+ break;
+ case ArgVtypeInIRegs:
+ /* LLVM models this by returning an int */
+ linfo->ret.storage = LLVMArgVtypeAsScalar;
+ linfo->ret.nslots = cinfo->ret.nregs;
+ linfo->ret.esize = cinfo->ret.esize;
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ for (i = 0; i < n; ++i) {
+ LLVMArgInfo *lainfo = &linfo->args [i];
+
+ ainfo = cinfo->args + i;
+
+ lainfo->storage = LLVMArgNone;
+
+ switch (ainfo->storage) {
+ case ArgInIReg:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ case ArgOnStack:
+ case ArgOnStackR4:
+ case ArgOnStackR8:
+ lainfo->storage = LLVMArgNormal;
+ break;
+ case ArgVtypeByRef:
+ case ArgVtypeByRefOnStack:
+ lainfo->storage = LLVMArgVtypeByRef;
+ break;
+ case ArgHFA: {
+ int j;
+
+ lainfo->storage = LLVMArgAsFpArgs;
+ lainfo->nslots = ainfo->nregs;
+ lainfo->esize = ainfo->esize;
+ for (j = 0; j < ainfo->nregs; ++j)
+ lainfo->pair_storage [j] = LLVMArgInFPReg;
+ break;
+ }
+ case ArgVtypeInIRegs:
+ lainfo->storage = LLVMArgAsIArgs;
+ lainfo->nslots = ainfo->nregs;
+ break;
+ case ArgVtypeOnStack:
+ if (ainfo->hfa) {
+ int j;
+ /* Same as above */
+ lainfo->storage = LLVMArgAsFpArgs;
+ lainfo->nslots = ainfo->nregs;
+ lainfo->esize = ainfo->esize;
+ lainfo->ndummy_fpargs = ainfo->nfregs_to_skip;
+ for (j = 0; j < ainfo->nregs; ++j)
+ lainfo->pair_storage [j] = LLVMArgInFPReg;
+ } else {
+ lainfo->storage = LLVMArgAsIArgs;
+ lainfo->nslots = ainfo->size / 8;
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ }
+
+ return linfo;
+}
+#endif
+
+static void
+add_outarg_reg (MonoCompile *cfg, MonoCallInst *call, ArgStorage storage, int reg, MonoInst *arg)
+{
+ MonoInst *ins;
+
+ switch (storage) {
+ case ArgInIReg:
+ MONO_INST_NEW (cfg, ins, OP_MOVE);
+ ins->dreg = mono_alloc_ireg_copy (cfg, arg->dreg);
+ ins->sreg1 = arg->dreg;
+ MONO_ADD_INS (cfg->cbb, ins);
+ mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, FALSE);
+ break;
+ case ArgInFReg:
+ MONO_INST_NEW (cfg, ins, OP_FMOVE);
+ ins->dreg = mono_alloc_freg (cfg);
+ ins->sreg1 = arg->dreg;
+ MONO_ADD_INS (cfg->cbb, ins);
+ mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, TRUE);
+ break;
+ case ArgInFRegR4:
+ if (COMPILE_LLVM (cfg))
+ MONO_INST_NEW (cfg, ins, OP_FMOVE);
+ else if (cfg->r4fp)
+ MONO_INST_NEW (cfg, ins, OP_RMOVE);
+ else
+ MONO_INST_NEW (cfg, ins, OP_ARM_SETFREG_R4);
+ ins->dreg = mono_alloc_freg (cfg);
+ ins->sreg1 = arg->dreg;
+ MONO_ADD_INS (cfg->cbb, ins);
+ mono_call_inst_add_outarg_reg (cfg, call, ins->dreg, reg, TRUE);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+}
+
+static void
+emit_sig_cookie (MonoCompile *cfg, MonoCallInst *call, CallInfo *cinfo)
+{
+ MonoMethodSignature *tmp_sig;
+ int sig_reg;
+
+ if (call->tail_call)
+ NOT_IMPLEMENTED;
+
+ g_assert (cinfo->sig_cookie.storage == ArgOnStack);
+
+ /*
+ * mono_ArgIterator_Setup assumes the signature cookie is
+ * passed first and all the arguments which were before it are
+ * passed on the stack after the signature. So compensate by
+ * passing a different signature.
+ */
+ tmp_sig = mono_metadata_signature_dup (call->signature);
+ tmp_sig->param_count -= call->signature->sentinelpos;
+ tmp_sig->sentinelpos = 0;
+ memcpy (tmp_sig->params, call->signature->params + call->signature->sentinelpos, tmp_sig->param_count * sizeof (MonoType*));
+
+ sig_reg = mono_alloc_ireg (cfg);
+ MONO_EMIT_NEW_SIGNATURECONST (cfg, sig_reg, tmp_sig);
+
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, ARMREG_SP, cinfo->sig_cookie.offset, sig_reg);
+}
+
+void
+mono_arch_emit_call (MonoCompile *cfg, MonoCallInst *call)
+{
+ MonoMethodSignature *sig;
+ MonoInst *arg, *vtarg;
+ CallInfo *cinfo;
+ ArgInfo *ainfo;
+ int i;
+
+ sig = call->signature;
+
+ cinfo = get_call_info (cfg->mempool, sig);
+
+ switch (cinfo->ret.storage) {
+ case ArgVtypeInIRegs:
+ case ArgHFA:
+ /*
+ * The vtype is returned in registers, save the return area address in a local, and save the vtype into
+ * the location pointed to by it after call in emit_move_return_value ().
+ */
+ if (!cfg->arch.vret_addr_loc) {
+ cfg->arch.vret_addr_loc = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
+ /* Prevent it from being register allocated or optimized away */
+ ((MonoInst*)cfg->arch.vret_addr_loc)->flags |= MONO_INST_VOLATILE;
+ }
+
+ MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, ((MonoInst*)cfg->arch.vret_addr_loc)->dreg, call->vret_var->dreg);
+ break;
+ case ArgVtypeByRef:
+ /* Pass the vtype return address in R8 */
+ MONO_INST_NEW (cfg, vtarg, OP_MOVE);
+ vtarg->sreg1 = call->vret_var->dreg;
+ vtarg->dreg = mono_alloc_preg (cfg);
+ MONO_ADD_INS (cfg->cbb, vtarg);
+
+ mono_call_inst_add_outarg_reg (cfg, call, vtarg->dreg, cinfo->ret.reg, FALSE);
+ break;
+ default:
+ break;
+ }
+
+ for (i = 0; i < cinfo->nargs; ++i) {
+ ainfo = cinfo->args + i;
+ arg = call->args [i];
+
+ if ((sig->call_convention == MONO_CALL_VARARG) && (i == sig->sentinelpos)) {
+ /* Emit the signature cookie just before the implicit arguments */
+ emit_sig_cookie (cfg, call, cinfo);
+ }
+
+ switch (ainfo->storage) {
+ case ArgInIReg:
+ case ArgInFReg:
+ case ArgInFRegR4:
+ add_outarg_reg (cfg, call, ainfo->storage, ainfo->reg, arg);
+ break;
+ case ArgOnStack:
+ switch (ainfo->slot_size) {
+ case 8:
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, ARMREG_SP, ainfo->offset, arg->dreg);
+ break;
+ case 4:
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI4_MEMBASE_REG, ARMREG_SP, ainfo->offset, arg->dreg);
+ break;
+ case 2:
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, ARMREG_SP, ainfo->offset, arg->dreg);
+ break;
+ case 1:
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI1_MEMBASE_REG, ARMREG_SP, ainfo->offset, arg->dreg);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ break;
+ case ArgOnStackR8:
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORER8_MEMBASE_REG, ARMREG_SP, ainfo->offset, arg->dreg);
+ break;
+ case ArgOnStackR4:
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORER4_MEMBASE_REG, ARMREG_SP, ainfo->offset, arg->dreg);
+ break;
+ case ArgVtypeInIRegs:
+ case ArgVtypeByRef:
+ case ArgVtypeByRefOnStack:
+ case ArgVtypeOnStack:
+ case ArgHFA: {
+ MonoInst *ins;
+ guint32 align;
+ guint32 size;
+
+ size = mono_class_value_size (arg->klass, &align);
+
+ MONO_INST_NEW (cfg, ins, OP_OUTARG_VT);
+ ins->sreg1 = arg->dreg;
+ ins->klass = arg->klass;
+ ins->backend.size = size;
+ ins->inst_p0 = call;
+ ins->inst_p1 = mono_mempool_alloc (cfg->mempool, sizeof (ArgInfo));
+ memcpy (ins->inst_p1, ainfo, sizeof (ArgInfo));
+ MONO_ADD_INS (cfg->cbb, ins);
+ break;
+ }
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ }
+
+ /* Handle the case where there are no implicit arguments */
+ if (!sig->pinvoke && (sig->call_convention == MONO_CALL_VARARG) && (cinfo->nargs == sig->sentinelpos))
+ emit_sig_cookie (cfg, call, cinfo);
+
+ call->call_info = cinfo;
+ call->stack_usage = cinfo->stack_usage;
+}
+
+void
+mono_arch_emit_outarg_vt (MonoCompile *cfg, MonoInst *ins, MonoInst *src)
+{
+ MonoCallInst *call = (MonoCallInst*)ins->inst_p0;
+ ArgInfo *ainfo = ins->inst_p1;
+ MonoInst *load;
+ int i;
+
+ if (ins->backend.size == 0 && !ainfo->gsharedvt)
+ return;
+
+ switch (ainfo->storage) {
+ case ArgVtypeInIRegs:
+ for (i = 0; i < ainfo->nregs; ++i) {
+ // FIXME: Smaller sizes
+ MONO_INST_NEW (cfg, load, OP_LOADI8_MEMBASE);
+ load->dreg = mono_alloc_ireg (cfg);
+ load->inst_basereg = src->dreg;
+ load->inst_offset = i * sizeof(mgreg_t);
+ MONO_ADD_INS (cfg->cbb, load);
+ add_outarg_reg (cfg, call, ArgInIReg, ainfo->reg + i, load);
+ }
+ break;
+ case ArgHFA:
+ for (i = 0; i < ainfo->nregs; ++i) {
+ if (ainfo->esize == 4)
+ MONO_INST_NEW (cfg, load, OP_LOADR4_MEMBASE);
+ else
+ MONO_INST_NEW (cfg, load, OP_LOADR8_MEMBASE);
+ load->dreg = mono_alloc_freg (cfg);
+ load->inst_basereg = src->dreg;
+ load->inst_offset = ainfo->foffsets [i];
+ MONO_ADD_INS (cfg->cbb, load);
+ add_outarg_reg (cfg, call, ainfo->esize == 4 ? ArgInFRegR4 : ArgInFReg, ainfo->reg + i, load);
+ }
+ break;
+ case ArgVtypeByRef:
+ case ArgVtypeByRefOnStack: {
+ MonoInst *vtaddr, *load, *arg;
+
+ /* Pass the vtype address in a reg/on the stack */
+ if (ainfo->gsharedvt) {
+ load = src;
+ } else {
+ /* Make a copy of the argument */
+ vtaddr = mono_compile_create_var (cfg, &ins->klass->byval_arg, OP_LOCAL);
+
+ MONO_INST_NEW (cfg, load, OP_LDADDR);
+ load->inst_p0 = vtaddr;
+ vtaddr->flags |= MONO_INST_INDIRECT;
+ load->type = STACK_MP;
+ load->klass = vtaddr->klass;
+ load->dreg = mono_alloc_ireg (cfg);
+ MONO_ADD_INS (cfg->cbb, load);
+ mini_emit_memcpy (cfg, load->dreg, 0, src->dreg, 0, ainfo->size, 8);
+ }
+
+ if (ainfo->storage == ArgVtypeByRef) {
+ MONO_INST_NEW (cfg, arg, OP_MOVE);
+ arg->dreg = mono_alloc_preg (cfg);
+ arg->sreg1 = load->dreg;
+ MONO_ADD_INS (cfg->cbb, arg);
+ add_outarg_reg (cfg, call, ArgInIReg, ainfo->reg, arg);
+ } else {
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, ARMREG_SP, ainfo->offset, load->dreg);
+ }
+ break;
+ }
+ case ArgVtypeOnStack:
+ for (i = 0; i < ainfo->size / 8; ++i) {
+ MONO_INST_NEW (cfg, load, OP_LOADI8_MEMBASE);
+ load->dreg = mono_alloc_ireg (cfg);
+ load->inst_basereg = src->dreg;
+ load->inst_offset = i * 8;
+ MONO_ADD_INS (cfg->cbb, load);
+ MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI8_MEMBASE_REG, ARMREG_SP, ainfo->offset + (i * 8), load->dreg);
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+}
+
+void
+mono_arch_emit_setret (MonoCompile *cfg, MonoMethod *method, MonoInst *val)
+{
+ MonoMethodSignature *sig;
+ CallInfo *cinfo;
+
+ sig = mono_method_signature (cfg->method);
+ if (!cfg->arch.cinfo)
+ cfg->arch.cinfo = get_call_info (cfg->mempool, sig);
+ cinfo = cfg->arch.cinfo;
+
+ switch (cinfo->ret.storage) {
+ case ArgNone:
+ break;
+ case ArgInIReg:
+ MONO_EMIT_NEW_UNALU (cfg, OP_MOVE, cfg->ret->dreg, val->dreg);
+ break;
+ case ArgInFReg:
+ MONO_EMIT_NEW_UNALU (cfg, OP_FMOVE, cfg->ret->dreg, val->dreg);
+ break;
+ case ArgInFRegR4:
+ if (COMPILE_LLVM (cfg))
+ MONO_EMIT_NEW_UNALU (cfg, OP_FMOVE, cfg->ret->dreg, val->dreg);
+ else if (cfg->r4fp)
+ MONO_EMIT_NEW_UNALU (cfg, OP_RMOVE, cfg->ret->dreg, val->dreg);
+ else
+ MONO_EMIT_NEW_UNALU (cfg, OP_ARM_SETFREG_R4, cfg->ret->dreg, val->dreg);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+}
+
+gboolean
+mono_arch_tail_call_supported (MonoCompile *cfg, MonoMethodSignature *caller_sig, MonoMethodSignature *callee_sig)
+{
+ CallInfo *c1, *c2;
+ gboolean res;
+
+ if (cfg->compile_aot && !cfg->full_aot)
+ /* OP_TAILCALL doesn't work with AOT */
+ return FALSE;
+
+ c1 = get_call_info (NULL, caller_sig);
+ c2 = get_call_info (NULL, callee_sig);
+ res = TRUE;
+ // FIXME: Relax these restrictions
+ if (c1->stack_usage != 0)
+ res = FALSE;
+ if (c1->stack_usage != c2->stack_usage)
+ res = FALSE;
+ if ((c1->ret.storage != ArgNone && c1->ret.storage != ArgInIReg) || c1->ret.storage != c2->ret.storage)
+ res = FALSE;
+
+ g_free (c1);
+ g_free (c2);
+
+ return res;
+}
+
+gboolean
+mono_arch_is_inst_imm (gint64 imm)
+{
+ return (imm >= -((gint64)1<<31) && imm <= (((gint64)1<<31)-1));
+}
+
+void*
+mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
+{
+ NOT_IMPLEMENTED;
+ return NULL;
+}
+
+void*
+mono_arch_instrument_epilog_full (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments, gboolean preserve_argument_registers)
+{
+ NOT_IMPLEMENTED;
+ return NULL;
+}
+
+void
+mono_arch_peephole_pass_1 (MonoCompile *cfg, MonoBasicBlock *bb)
+{
+ //NOT_IMPLEMENTED;
+}
+
+void
+mono_arch_peephole_pass_2 (MonoCompile *cfg, MonoBasicBlock *bb)
+{
+ //NOT_IMPLEMENTED;
+}
+
+#define ADD_NEW_INS(cfg,dest,op) do { \
+ MONO_INST_NEW ((cfg), (dest), (op)); \
+ mono_bblock_insert_before_ins (bb, ins, (dest)); \
+ } while (0)
+
+void
+mono_arch_lowering_pass (MonoCompile *cfg, MonoBasicBlock *bb)
+{
+ MonoInst *ins, *temp, *last_ins = NULL;
+
+ MONO_BB_FOR_EACH_INS (bb, ins) {
+ switch (ins->opcode) {
+ case OP_SBB:
+ case OP_ISBB:
+ case OP_SUBCC:
+ case OP_ISUBCC:
+ if (ins->next && (ins->next->opcode == OP_COND_EXC_C || ins->next->opcode == OP_COND_EXC_IC))
+ /* ARM sets the C flag to 1 if there was _no_ overflow */
+ ins->next->opcode = OP_COND_EXC_NC;
+ break;
+ case OP_IDIV_IMM:
+ case OP_IREM_IMM:
+ case OP_IDIV_UN_IMM:
+ case OP_IREM_UN_IMM:
+ case OP_LREM_IMM:
+ mono_decompose_op_imm (cfg, bb, ins);
+ break;
+ case OP_LOCALLOC_IMM:
+ if (ins->inst_imm > 32) {
+ ADD_NEW_INS (cfg, temp, OP_ICONST);
+ temp->inst_c0 = ins->inst_imm;
+ temp->dreg = mono_alloc_ireg (cfg);
+ ins->sreg1 = temp->dreg;
+ ins->opcode = mono_op_imm_to_op (ins->opcode);
+ }
+ break;
+ case OP_ICOMPARE_IMM:
+ if (ins->inst_imm == 0 && ins->next && ins->next->opcode == OP_IBEQ) {
+ ins->next->opcode = OP_ARM64_CBZW;
+ ins->next->sreg1 = ins->sreg1;
+ NULLIFY_INS (ins);
+ } else if (ins->inst_imm == 0 && ins->next && ins->next->opcode == OP_IBNE_UN) {
+ ins->next->opcode = OP_ARM64_CBNZW;
+ ins->next->sreg1 = ins->sreg1;
+ NULLIFY_INS (ins);
+ }
+ break;
+ case OP_LCOMPARE_IMM:
+ case OP_COMPARE_IMM:
+ if (ins->inst_imm == 0 && ins->next && ins->next->opcode == OP_LBEQ) {
+ ins->next->opcode = OP_ARM64_CBZX;
+ ins->next->sreg1 = ins->sreg1;
+ NULLIFY_INS (ins);
+ } else if (ins->inst_imm == 0 && ins->next && ins->next->opcode == OP_LBNE_UN) {
+ ins->next->opcode = OP_ARM64_CBNZX;
+ ins->next->sreg1 = ins->sreg1;
+ NULLIFY_INS (ins);
+ }
+ break;
+ case OP_FCOMPARE: {
+ gboolean swap = FALSE;
+ int reg;
+
+ if (!ins->next) {
+ /* Optimized away */
+ NULLIFY_INS (ins);
+ break;
+ }
+
+ /*
+ * FP compares with unordered operands set the flags
+ * to NZCV=0011, which matches some non-unordered compares
+ * as well, like LE, so have to swap the operands.
+ */
+ switch (ins->next->opcode) {
+ case OP_FBLT:
+ ins->next->opcode = OP_FBGT;
+ swap = TRUE;
+ break;
+ case OP_FBLE:
+ ins->next->opcode = OP_FBGE;
+ swap = TRUE;
+ break;
+ default:
+ break;
+ }
+ if (swap) {
+ reg = ins->sreg1;
+ ins->sreg1 = ins->sreg2;
+ ins->sreg2 = reg;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ last_ins = ins;
+ }
+ bb->last_ins = last_ins;
+ bb->max_vreg = cfg->next_vreg;
+}
+
+void
+mono_arch_decompose_long_opts (MonoCompile *cfg, MonoInst *long_ins)
+{
+}
+
+static int
+opcode_to_armcond (int opcode)
+{
+ switch (opcode) {
+ case OP_IBEQ:
+ case OP_LBEQ:
+ case OP_FBEQ:
+ case OP_CEQ:
+ case OP_ICEQ:
+ case OP_LCEQ:
+ case OP_FCEQ:
+ case OP_RCEQ:
+ case OP_COND_EXC_IEQ:
+ case OP_COND_EXC_EQ:
+ return ARMCOND_EQ;
+ case OP_IBGE:
+ case OP_LBGE:
+ case OP_FBGE:
+ case OP_ICGE:
+ case OP_FCGE:
+ case OP_RCGE:
+ return ARMCOND_GE;
+ case OP_IBGT:
+ case OP_LBGT:
+ case OP_FBGT:
+ case OP_CGT:
+ case OP_ICGT:
+ case OP_LCGT:
+ case OP_FCGT:
+ case OP_RCGT:
+ case OP_COND_EXC_IGT:
+ case OP_COND_EXC_GT:
+ return ARMCOND_GT;
+ case OP_IBLE:
+ case OP_LBLE:
+ case OP_FBLE:
+ case OP_ICLE:
+ case OP_FCLE:
+ case OP_RCLE:
+ return ARMCOND_LE;
+ case OP_IBLT:
+ case OP_LBLT:
+ case OP_FBLT:
+ case OP_CLT:
+ case OP_ICLT:
+ case OP_LCLT:
+ case OP_COND_EXC_ILT:
+ case OP_COND_EXC_LT:
+ return ARMCOND_LT;
+ case OP_IBNE_UN:
+ case OP_LBNE_UN:
+ case OP_FBNE_UN:
+ case OP_ICNEQ:
+ case OP_FCNEQ:
+ case OP_RCNEQ:
+ case OP_COND_EXC_INE_UN:
+ case OP_COND_EXC_NE_UN:
+ return ARMCOND_NE;
+ case OP_IBGE_UN:
+ case OP_LBGE_UN:
+ case OP_FBGE_UN:
+ case OP_ICGE_UN:
+ case OP_COND_EXC_IGE_UN:
+ case OP_COND_EXC_GE_UN:
+ return ARMCOND_HS;
+ case OP_IBGT_UN:
+ case OP_LBGT_UN:
+ case OP_FBGT_UN:
+ case OP_CGT_UN:
+ case OP_ICGT_UN:
+ case OP_LCGT_UN:
+ case OP_FCGT_UN:
+ case OP_RCGT_UN:
+ case OP_COND_EXC_IGT_UN:
+ case OP_COND_EXC_GT_UN:
+ return ARMCOND_HI;
+ case OP_IBLE_UN:
+ case OP_LBLE_UN:
+ case OP_FBLE_UN:
+ case OP_ICLE_UN:
+ case OP_COND_EXC_ILE_UN:
+ case OP_COND_EXC_LE_UN:
+ return ARMCOND_LS;
+ case OP_IBLT_UN:
+ case OP_LBLT_UN:
+ case OP_FBLT_UN:
+ case OP_CLT_UN:
+ case OP_ICLT_UN:
+ case OP_LCLT_UN:
+ case OP_COND_EXC_ILT_UN:
+ case OP_COND_EXC_LT_UN:
+ return ARMCOND_LO;
+ /*
+ * FCMP sets the NZCV condition bits as follows:
+ * eq = 0110
+ * < = 1000
+ * > = 0010
+ * unordered = 0011
+ * ARMCOND_LT is N!=V, so it matches unordered too, so
+ * fclt and fclt_un need to be special cased.
+ */
+ case OP_FCLT:
+ case OP_RCLT:
+ /* N==1 */
+ return ARMCOND_MI;
+ case OP_FCLT_UN:
+ case OP_RCLT_UN:
+ return ARMCOND_LT;
+ case OP_COND_EXC_C:
+ case OP_COND_EXC_IC:
+ return ARMCOND_CS;
+ case OP_COND_EXC_OV:
+ case OP_COND_EXC_IOV:
+ return ARMCOND_VS;
+ case OP_COND_EXC_NC:
+ case OP_COND_EXC_INC:
+ return ARMCOND_CC;
+ case OP_COND_EXC_NO:
+ case OP_COND_EXC_INO:
+ return ARMCOND_VC;
+ default:
+ printf ("%s\n", mono_inst_name (opcode));
+ g_assert_not_reached ();
+ return -1;
+ }
+}
+
+/* This clobbers LR */
+static inline __attribute__((warn_unused_result)) guint8*
+emit_cond_exc (MonoCompile *cfg, guint8 *code, int opcode, const char *exc_name)
+{
+ int cond;
+
+ cond = opcode_to_armcond (opcode);
+ /* Capture PC */
+ arm_adrx (code, ARMREG_IP1, code);
+ mono_add_patch_info_rel (cfg, code - cfg->native_code, MONO_PATCH_INFO_EXC, exc_name, MONO_R_ARM64_BCC);
+ arm_bcc (code, cond, 0);
+ return code;
+}
+
+static guint8*
+emit_move_return_value (MonoCompile *cfg, guint8 * code, MonoInst *ins)
+{
+ CallInfo *cinfo;
+ MonoCallInst *call;
+
+ call = (MonoCallInst*)ins;
+ cinfo = call->call_info;
+ g_assert (cinfo);
+ switch (cinfo->ret.storage) {
+ case ArgNone:
+ break;
+ case ArgInIReg:
+ /* LLVM compiled code might only set the bottom bits */
+ if (call->signature && mini_get_underlying_type (call->signature->ret)->type == MONO_TYPE_I4)
+ arm_sxtwx (code, call->inst.dreg, cinfo->ret.reg);
+ else if (call->inst.dreg != cinfo->ret.reg)
+ arm_movx (code, call->inst.dreg, cinfo->ret.reg);
+ break;
+ case ArgInFReg:
+ if (call->inst.dreg != cinfo->ret.reg)
+ arm_fmovd (code, call->inst.dreg, cinfo->ret.reg);
+ break;
+ case ArgInFRegR4:
+ if (cfg->r4fp)
+ arm_fmovs (code, call->inst.dreg, cinfo->ret.reg);
+ else
+ arm_fcvt_sd (code, call->inst.dreg, cinfo->ret.reg);
+ break;
+ case ArgVtypeInIRegs: {
+ MonoInst *loc = cfg->arch.vret_addr_loc;
+ int i;
+
+ /* Load the destination address */
+ g_assert (loc && loc->opcode == OP_REGOFFSET);
+ code = emit_ldrx (code, ARMREG_LR, loc->inst_basereg, loc->inst_offset);
+ for (i = 0; i < cinfo->ret.nregs; ++i)
+ arm_strx (code, cinfo->ret.reg + i, ARMREG_LR, i * 8);
+ break;
+ }
+ case ArgHFA: {
+ MonoInst *loc = cfg->arch.vret_addr_loc;
+ int i;
+
+ /* Load the destination address */
+ g_assert (loc && loc->opcode == OP_REGOFFSET);
+ code = emit_ldrx (code, ARMREG_LR, loc->inst_basereg, loc->inst_offset);
+ for (i = 0; i < cinfo->ret.nregs; ++i) {
+ if (cinfo->ret.esize == 4)
+ arm_strfpw (code, cinfo->ret.reg + i, ARMREG_LR, cinfo->ret.foffsets [i]);
+ else
+ arm_strfpx (code, cinfo->ret.reg + i, ARMREG_LR, cinfo->ret.foffsets [i]);
+ }
+ break;
+ }
+ case ArgVtypeByRef:
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ return code;
+}
+
+/*
+ * emit_branch_island:
+ *
+ * Emit a branch island for the conditional branches from cfg->native_code + start_offset to code.
+ */
+static guint8*
+emit_branch_island (MonoCompile *cfg, guint8 *code, int start_offset)
+{
+ MonoJumpInfo *ji;
+ int offset, island_size;
+
+ /* Iterate over the patch infos added so far by this bb */
+ island_size = 0;
+ for (ji = cfg->patch_info; ji; ji = ji->next) {
+ if (ji->ip.i < start_offset)
+ /* The patch infos are in reverse order, so this means the end */
+ break;
+ if (ji->relocation == MONO_R_ARM64_BCC || ji->relocation == MONO_R_ARM64_CBZ)
+ island_size += 4;
+ }
+
+ if (island_size) {
+ offset = code - cfg->native_code;
+ if (offset > (cfg->code_size - island_size - 16)) {
+ cfg->code_size *= 2;
+ cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
+ code = cfg->native_code + offset;
+ }
+
+ /* Branch over the island */
+ arm_b (code, code + 4 + island_size);
+
+ for (ji = cfg->patch_info; ji; ji = ji->next) {
+ if (ji->ip.i < start_offset)
+ break;
+ if (ji->relocation == MONO_R_ARM64_BCC || ji->relocation == MONO_R_ARM64_CBZ) {
+ /* Rewrite the cond branch so it branches to an uncoditional branch in the branch island */
+ arm_patch_rel (cfg->native_code + ji->ip.i, code, ji->relocation);
+ /* Rewrite the patch so it points to the unconditional branch */
+ ji->ip.i = code - cfg->native_code;
+ ji->relocation = MONO_R_ARM64_B;
+ arm_b (code, code);
+ }
+ }
+ }
+ return code;
+}
+
+void
+mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
+{
+ MonoInst *ins;
+ MonoCallInst *call;
+ guint offset;
+ guint8 *code = cfg->native_code + cfg->code_len;
+ int start_offset, max_len, dreg, sreg1, sreg2;
+ mgreg_t imm;
+
+ if (cfg->verbose_level > 2)
+ g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
+
+ start_offset = code - cfg->native_code;
+
+ MONO_BB_FOR_EACH_INS (bb, ins) {
+ offset = code - cfg->native_code;
+
+ max_len = ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
+
+ if (offset > (cfg->code_size - max_len - 16)) {
+ cfg->code_size *= 2;
+ cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
+ code = cfg->native_code + offset;
+ }
+
+ if (G_UNLIKELY (cfg->arch.cond_branch_islands && offset - start_offset > 4 * 0x1ffff)) {
+ /* Emit a branch island for large basic blocks */
+ code = emit_branch_island (cfg, code, start_offset);
+ offset = code - cfg->native_code;
+ start_offset = offset;
+ }
+
+ mono_debug_record_line_number (cfg, ins, offset);
+
+ dreg = ins->dreg;
+ sreg1 = ins->sreg1;
+ sreg2 = ins->sreg2;
+ imm = ins->inst_imm;
+
+ switch (ins->opcode) {
+ case OP_ICONST:
+ code = emit_imm (code, dreg, ins->inst_c0);
+ break;
+ case OP_I8CONST:
+ code = emit_imm64 (code, dreg, ins->inst_c0);
+ break;
+ case OP_MOVE:
+ if (dreg != sreg1)
+ arm_movx (code, dreg, sreg1);
+ break;
+ case OP_NOP:
+ case OP_RELAXED_NOP:
+ break;
+ case OP_JUMP_TABLE:
+ mono_add_patch_info_rel (cfg, offset, (MonoJumpInfoType)ins->inst_i1, ins->inst_p0, MONO_R_ARM64_IMM);
+ code = emit_imm64_template (code, dreg);
+ break;
+ case OP_BREAK:
+ /*
+ * gdb does not like encountering the hw breakpoint ins in the debugged code.
+ * So instead of emitting a trap, we emit a call a C function and place a
+ * breakpoint there.
+ */
+ code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD, (gpointer)"mono_break");
+ break;
+ case OP_LOCALLOC: {
+ guint8 *buf [16];
+
+ arm_addx_imm (code, ARMREG_IP0, sreg1, (MONO_ARCH_FRAME_ALIGNMENT - 1));
+ // FIXME: andx_imm doesn't work yet
+ code = emit_imm (code, ARMREG_IP1, -MONO_ARCH_FRAME_ALIGNMENT);
+ arm_andx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
+ //arm_andx_imm (code, ARMREG_IP0, sreg1, - MONO_ARCH_FRAME_ALIGNMENT);
+ arm_movspx (code, ARMREG_IP1, ARMREG_SP);
+ arm_subx (code, ARMREG_IP1, ARMREG_IP1, ARMREG_IP0);
+ arm_movspx (code, ARMREG_SP, ARMREG_IP1);
+
+ /* Init */
+ /* ip1 = pointer, ip0 = end */
+ arm_addx (code, ARMREG_IP0, ARMREG_IP1, ARMREG_IP0);
+ buf [0] = code;
+ arm_cmpx (code, ARMREG_IP1, ARMREG_IP0);
+ buf [1] = code;
+ arm_bcc (code, ARMCOND_EQ, 0);
+ arm_stpx (code, ARMREG_RZR, ARMREG_RZR, ARMREG_IP1, 0);
+ arm_addx_imm (code, ARMREG_IP1, ARMREG_IP1, 16);
+ arm_b (code, buf [0]);
+ arm_patch_rel (buf [1], code, MONO_R_ARM64_BCC);
+
+ arm_movspx (code, dreg, ARMREG_SP);
+ if (cfg->param_area)
+ code = emit_subx_sp_imm (code, cfg->param_area);
+ break;
+ }
+ case OP_LOCALLOC_IMM: {
+ int imm, offset;
+
+ imm = ALIGN_TO (ins->inst_imm, MONO_ARCH_FRAME_ALIGNMENT);
+ g_assert (arm_is_arith_imm (imm));
+ arm_subx_imm (code, ARMREG_SP, ARMREG_SP, imm);
+
+ /* Init */
+ g_assert (MONO_ARCH_FRAME_ALIGNMENT == 16);
+ offset = 0;
+ while (offset < imm) {
+ arm_stpx (code, ARMREG_RZR, ARMREG_RZR, ARMREG_SP, offset);
+ offset += 16;
+ }
+ arm_movspx (code, dreg, ARMREG_SP);
+ if (cfg->param_area)
+ code = emit_subx_sp_imm (code, cfg->param_area);
+ break;
+ }
+ case OP_AOTCONST:
+ code = emit_aotconst (cfg, code, dreg, (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
+ break;
+ case OP_OBJC_GET_SELECTOR:
+ mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_OBJC_SELECTOR_REF, ins->inst_p0);
+ /* See arch_emit_objc_selector_ref () in aot-compiler.c */
+ arm_ldrx_lit (code, ins->dreg, 0);
+ arm_nop (code);
+ arm_nop (code);
+ break;
+ case OP_SEQ_POINT: {
+ MonoInst *info_var = cfg->arch.seq_point_info_var;
+
+ /*
+ * For AOT, we use one got slot per method, which will point to a
+ * SeqPointInfo structure, containing all the information required
+ * by the code below.
+ */
+ if (cfg->compile_aot) {
+ g_assert (info_var);
+ g_assert (info_var->opcode == OP_REGOFFSET);
+ }
+
+ if (ins->flags & MONO_INST_SINGLE_STEP_LOC) {
+ MonoInst *var = cfg->arch.ss_tramp_var;
+
+ g_assert (var);
+ g_assert (var->opcode == OP_REGOFFSET);
+ /* Load ss_tramp_var */
+ /* This is equal to &ss_trampoline */
+ arm_ldrx (code, ARMREG_IP1, var->inst_basereg, var->inst_offset);
+ /* Load the trampoline address */
+ arm_ldrx (code, ARMREG_IP1, ARMREG_IP1, 0);
+ /* Call it if it is non-null */
+ arm_cbzx (code, ARMREG_IP1, code + 8);
+ arm_blrx (code, ARMREG_IP1);
+ }
+
+ mono_add_seq_point (cfg, bb, ins, code - cfg->native_code);
+
+ if (cfg->compile_aot) {
+ guint32 offset = code - cfg->native_code;
+ guint32 val;
+
+ arm_ldrx (code, ARMREG_IP1, info_var->inst_basereg, info_var->inst_offset);
+ /* Add the offset */
+ val = ((offset / 4) * sizeof (guint8*)) + MONO_STRUCT_OFFSET (SeqPointInfo, bp_addrs);
+ /* Load the info->bp_addrs [offset], which is either 0 or the address of the bp trampoline */
+ code = emit_ldrx (code, ARMREG_IP1, ARMREG_IP1, val);
+ /* Skip the load if its 0 */
+ arm_cbzx (code, ARMREG_IP1, code + 8);
+ /* Call the breakpoint trampoline */
+ arm_blrx (code, ARMREG_IP1);
+ } else {
+ MonoInst *var = cfg->arch.bp_tramp_var;
+
+ g_assert (var);
+ g_assert (var->opcode == OP_REGOFFSET);
+ /* Load the address of the bp trampoline into IP0 */
+ arm_ldrx (code, ARMREG_IP0, var->inst_basereg, var->inst_offset);
+ /*
+ * A placeholder for a possible breakpoint inserted by
+ * mono_arch_set_breakpoint ().
+ */
+ arm_nop (code);
+ }
+ break;
+ }
+
+ /* BRANCH */
+ case OP_BR:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_target_bb, MONO_R_ARM64_B);
+ arm_b (code, code);
+ break;
+ case OP_BR_REG:
+ arm_brx (code, sreg1);
+ break;
+ case OP_IBEQ:
+ case OP_IBGE:
+ case OP_IBGT:
+ case OP_IBLE:
+ case OP_IBLT:
+ case OP_IBNE_UN:
+ case OP_IBGE_UN:
+ case OP_IBGT_UN:
+ case OP_IBLE_UN:
+ case OP_IBLT_UN:
+ case OP_LBEQ:
+ case OP_LBGE:
+ case OP_LBGT:
+ case OP_LBLE:
+ case OP_LBLT:
+ case OP_LBNE_UN:
+ case OP_LBGE_UN:
+ case OP_LBGT_UN:
+ case OP_LBLE_UN:
+ case OP_LBLT_UN:
+ case OP_FBEQ:
+ case OP_FBNE_UN:
+ case OP_FBLT:
+ case OP_FBGT:
+ case OP_FBGT_UN:
+ case OP_FBLE:
+ case OP_FBGE:
+ case OP_FBGE_UN: {
+ int cond;
+
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_BCC);
+ cond = opcode_to_armcond (ins->opcode);
+ arm_bcc (code, cond, 0);
+ break;
+ }
+ case OP_FBLT_UN:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_BCC);
+ /* For fp compares, ARMCOND_LT is lt or unordered */
+ arm_bcc (code, ARMCOND_LT, 0);
+ break;
+ case OP_FBLE_UN:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_BCC);
+ arm_bcc (code, ARMCOND_EQ, 0);
+ offset = code - cfg->native_code;
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_BCC);
+ /* For fp compares, ARMCOND_LT is lt or unordered */
+ arm_bcc (code, ARMCOND_LT, 0);
+ break;
+ case OP_ARM64_CBZW:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_CBZ);
+ arm_cbzw (code, sreg1, 0);
+ break;
+ case OP_ARM64_CBZX:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_CBZ);
+ arm_cbzx (code, sreg1, 0);
+ break;
+ case OP_ARM64_CBNZW:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_CBZ);
+ arm_cbnzw (code, sreg1, 0);
+ break;
+ case OP_ARM64_CBNZX:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_true_bb, MONO_R_ARM64_CBZ);
+ arm_cbnzx (code, sreg1, 0);
+ break;
+ /* ALU */
+ case OP_IADD:
+ arm_addw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LADD:
+ arm_addx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ISUB:
+ arm_subw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LSUB:
+ arm_subx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_IAND:
+ arm_andw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LAND:
+ arm_andx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_IOR:
+ arm_orrw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LOR:
+ arm_orrx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_IXOR:
+ arm_eorw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LXOR:
+ arm_eorx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_INEG:
+ arm_negw (code, dreg, sreg1);
+ break;
+ case OP_LNEG:
+ arm_negx (code, dreg, sreg1);
+ break;
+ case OP_INOT:
+ arm_mvnw (code, dreg, sreg1);
+ break;
+ case OP_LNOT:
+ arm_mvnx (code, dreg, sreg1);
+ break;
+ case OP_IADDCC:
+ arm_addsw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ADDCC:
+ case OP_LADDCC:
+ arm_addsx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ISUBCC:
+ arm_subsw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LSUBCC:
+ case OP_SUBCC:
+ arm_subsx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ICOMPARE:
+ arm_cmpw (code, sreg1, sreg2);
+ break;
+ case OP_COMPARE:
+ case OP_LCOMPARE:
+ arm_cmpx (code, sreg1, sreg2);
+ break;
+ case OP_IADD_IMM:
+ code = emit_addw_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_LADD_IMM:
+ case OP_ADD_IMM:
+ code = emit_addx_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_ISUB_IMM:
+ code = emit_subw_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_LSUB_IMM:
+ code = emit_subx_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_IAND_IMM:
+ code = emit_andw_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_LAND_IMM:
+ case OP_AND_IMM:
+ code = emit_andx_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_IOR_IMM:
+ code = emit_orrw_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_LOR_IMM:
+ code = emit_orrx_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_IXOR_IMM:
+ code = emit_eorw_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_LXOR_IMM:
+ code = emit_eorx_imm (code, dreg, sreg1, imm);
+ break;
+ case OP_ICOMPARE_IMM:
+ code = emit_cmpw_imm (code, sreg1, imm);
+ break;
+ case OP_LCOMPARE_IMM:
+ case OP_COMPARE_IMM:
+ if (imm == 0) {
+ arm_cmpx (code, sreg1, ARMREG_RZR);
+ } else {
+ // FIXME: 32 vs 64 bit issues for 0xffffffff
+ code = emit_imm64 (code, ARMREG_LR, imm);
+ arm_cmpx (code, sreg1, ARMREG_LR);
+ }
+ break;
+ case OP_ISHL:
+ arm_lslvw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LSHL:
+ arm_lslvx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ISHR:
+ arm_asrvw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LSHR:
+ arm_asrvx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ISHR_UN:
+ arm_lsrvw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LSHR_UN:
+ arm_lsrvx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_ISHL_IMM:
+ if (imm == 0)
+ arm_movx (code, dreg, sreg1);
+ else
+ arm_lslw (code, dreg, sreg1, imm);
+ break;
+ case OP_LSHL_IMM:
+ if (imm == 0)
+ arm_movx (code, dreg, sreg1);
+ else
+ arm_lslx (code, dreg, sreg1, imm);
+ break;
+ case OP_ISHR_IMM:
+ if (imm == 0)
+ arm_movx (code, dreg, sreg1);
+ else
+ arm_asrw (code, dreg, sreg1, imm);
+ break;
+ case OP_LSHR_IMM:
+ case OP_SHR_IMM:
+ if (imm == 0)
+ arm_movx (code, dreg, sreg1);
+ else
+ arm_asrx (code, dreg, sreg1, imm);
+ break;
+ case OP_ISHR_UN_IMM:
+ if (imm == 0)
+ arm_movx (code, dreg, sreg1);
+ else
+ arm_lsrw (code, dreg, sreg1, imm);
+ break;
+ case OP_SHR_UN_IMM:
+ case OP_LSHR_UN_IMM:
+ if (imm == 0)
+ arm_movx (code, dreg, sreg1);
+ else
+ arm_lsrx (code, dreg, sreg1, imm);
+ break;
+
+ /* 64BIT ALU */
+ case OP_SEXT_I4:
+ arm_sxtwx (code, dreg, sreg1);
+ break;
+ case OP_ZEXT_I4:
+ /* Clean out the upper word */
+ arm_movw (code, dreg, sreg1);
+ break;
+ case OP_SHL_IMM:
+ arm_lslx (code, dreg, sreg1, imm);
+ break;
+
+ /* MULTIPLY/DIVISION */
+ case OP_IDIV:
+ case OP_IREM:
+ // FIXME: Optimize this
+ /* Check for zero */
+ arm_cmpx_imm (code, sreg2, 0);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "DivideByZeroException");
+ /* Check for INT_MIN/-1 */
+ code = emit_imm (code, ARMREG_IP0, 0x80000000);
+ arm_cmpx (code, sreg1, ARMREG_IP0);
+ arm_cset (code, ARMCOND_EQ, ARMREG_IP1);
+ code = emit_imm (code, ARMREG_IP0, 0xffffffff);
+ arm_cmpx (code, sreg2, ARMREG_IP0);
+ arm_cset (code, ARMCOND_EQ, ARMREG_IP0);
+ arm_andx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
+ arm_cmpx_imm (code, ARMREG_IP0, 1);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "OverflowException");
+ if (ins->opcode == OP_IREM) {
+ arm_sdivw (code, ARMREG_LR, sreg1, sreg2);
+ arm_msubw (code, dreg, ARMREG_LR, sreg2, sreg1);
+ } else {
+ arm_sdivw (code, dreg, sreg1, sreg2);
+ }
+ break;
+ case OP_IDIV_UN:
+ arm_cmpx_imm (code, sreg2, 0);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "DivideByZeroException");
+ arm_udivw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_IREM_UN:
+ arm_cmpx_imm (code, sreg2, 0);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "DivideByZeroException");
+ arm_udivw (code, ARMREG_LR, sreg1, sreg2);
+ arm_msubw (code, dreg, ARMREG_LR, sreg2, sreg1);
+ break;
+ case OP_LDIV:
+ case OP_LREM:
+ // FIXME: Optimize this
+ /* Check for zero */
+ arm_cmpx_imm (code, sreg2, 0);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "DivideByZeroException");
+ /* Check for INT64_MIN/-1 */
+ code = emit_imm64 (code, ARMREG_IP0, 0x8000000000000000);
+ arm_cmpx (code, sreg1, ARMREG_IP0);
+ arm_cset (code, ARMCOND_EQ, ARMREG_IP1);
+ code = emit_imm64 (code, ARMREG_IP0, 0xffffffffffffffff);
+ arm_cmpx (code, sreg2, ARMREG_IP0);
+ arm_cset (code, ARMCOND_EQ, ARMREG_IP0);
+ arm_andx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
+ arm_cmpx_imm (code, ARMREG_IP0, 1);
+ /* 64 bit uses ArithmeticException */
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "ArithmeticException");
+ if (ins->opcode == OP_LREM) {
+ arm_sdivx (code, ARMREG_LR, sreg1, sreg2);
+ arm_msubx (code, dreg, ARMREG_LR, sreg2, sreg1);
+ } else {
+ arm_sdivx (code, dreg, sreg1, sreg2);
+ }
+ break;
+ case OP_LDIV_UN:
+ arm_cmpx_imm (code, sreg2, 0);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "DivideByZeroException");
+ arm_udivx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LREM_UN:
+ arm_cmpx_imm (code, sreg2, 0);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_IEQ, "DivideByZeroException");
+ arm_udivx (code, ARMREG_LR, sreg1, sreg2);
+ arm_msubx (code, dreg, ARMREG_LR, sreg2, sreg1);
+ break;
+ case OP_IMUL:
+ arm_mulw (code, dreg, sreg1, sreg2);
+ break;
+ case OP_LMUL:
+ arm_mulx (code, dreg, sreg1, sreg2);
+ break;
+ case OP_IMUL_IMM:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_mulw (code, dreg, sreg1, ARMREG_LR);
+ break;
+ case OP_MUL_IMM:
+ case OP_LMUL_IMM:
+ code = emit_imm (code, ARMREG_LR, imm);
+ arm_mulx (code, dreg, sreg1, ARMREG_LR);
+ break;
+
+ /* CONVERSIONS */
+ case OP_ICONV_TO_I1:
+ case OP_LCONV_TO_I1:
+ arm_sxtbx (code, dreg, sreg1);
+ break;
+ case OP_ICONV_TO_I2:
+ case OP_LCONV_TO_I2:
+ arm_sxthx (code, dreg, sreg1);
+ break;
+ case OP_ICONV_TO_U1:
+ case OP_LCONV_TO_U1:
+ arm_uxtbw (code, dreg, sreg1);
+ break;
+ case OP_ICONV_TO_U2:
+ case OP_LCONV_TO_U2:
+ arm_uxthw (code, dreg, sreg1);
+ break;
+
+ /* CSET */
+ case OP_CEQ:
+ case OP_ICEQ:
+ case OP_LCEQ:
+ case OP_CLT:
+ case OP_ICLT:
+ case OP_LCLT:
+ case OP_CGT:
+ case OP_ICGT:
+ case OP_LCGT:
+ case OP_CLT_UN:
+ case OP_ICLT_UN:
+ case OP_LCLT_UN:
+ case OP_CGT_UN:
+ case OP_ICGT_UN:
+ case OP_LCGT_UN:
+ case OP_ICNEQ:
+ case OP_ICGE:
+ case OP_ICLE:
+ case OP_ICGE_UN:
+ case OP_ICLE_UN: {
+ int cond;
+
+ cond = opcode_to_armcond (ins->opcode);
+ arm_cset (code, cond, dreg);
+ break;
+ }
+ case OP_FCEQ:
+ case OP_FCLT:
+ case OP_FCLT_UN:
+ case OP_FCGT:
+ case OP_FCGT_UN:
+ case OP_FCNEQ:
+ case OP_FCLE:
+ case OP_FCGE: {
+ int cond;
+
+ cond = opcode_to_armcond (ins->opcode);
+ arm_fcmpd (code, sreg1, sreg2);
+ arm_cset (code, cond, dreg);
+ break;
+ }
+
+ /* MEMORY */
+ case OP_LOADI1_MEMBASE:
+ code = emit_ldrsbx (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOADU1_MEMBASE:
+ code = emit_ldrb (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOADI2_MEMBASE:
+ code = emit_ldrshx (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOADU2_MEMBASE:
+ code = emit_ldrh (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOADI4_MEMBASE:
+ code = emit_ldrswx (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOADU4_MEMBASE:
+ code = emit_ldrw (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOAD_MEMBASE:
+ case OP_LOADI8_MEMBASE:
+ code = emit_ldrx (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_STOREI1_MEMBASE_IMM:
+ case OP_STOREI2_MEMBASE_IMM:
+ case OP_STOREI4_MEMBASE_IMM:
+ case OP_STORE_MEMBASE_IMM:
+ case OP_STOREI8_MEMBASE_IMM: {
+ int immreg;
+
+ if (imm != 0) {
+ code = emit_imm (code, ARMREG_LR, imm);
+ immreg = ARMREG_LR;
+ } else {
+ immreg = ARMREG_RZR;
+ }
+
+ switch (ins->opcode) {
+ case OP_STOREI1_MEMBASE_IMM:
+ code = emit_strb (code, immreg, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STOREI2_MEMBASE_IMM:
+ code = emit_strh (code, immreg, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STOREI4_MEMBASE_IMM:
+ code = emit_strw (code, immreg, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STORE_MEMBASE_IMM:
+ case OP_STOREI8_MEMBASE_IMM:
+ code = emit_strx (code, immreg, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ break;
+ }
+ case OP_STOREI1_MEMBASE_REG:
+ code = emit_strb (code, sreg1, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STOREI2_MEMBASE_REG:
+ code = emit_strh (code, sreg1, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STOREI4_MEMBASE_REG:
+ code = emit_strw (code, sreg1, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STORE_MEMBASE_REG:
+ case OP_STOREI8_MEMBASE_REG:
+ code = emit_strx (code, sreg1, ins->inst_destbasereg, ins->inst_offset);
+ break;
+
+ case OP_TLS_GET:
+ code = emit_tls_get (code, dreg, ins->inst_offset);
+ break;
+ case OP_TLS_GET_REG:
+ code = emit_tls_get_reg (code, dreg, sreg1);
+ break;
+ case OP_TLS_SET:
+ code = emit_tls_set (code, sreg1, ins->inst_offset);
+ break;
+ case OP_TLS_SET_REG:
+ code = emit_tls_set_reg (code, sreg1, sreg2);
+ break;
+
+ /* Atomic */
+ case OP_MEMORY_BARRIER:
+ arm_dmb (code, 0);
+ break;
+ case OP_ATOMIC_ADD_I4: {
+ guint8 *buf [16];
+
+ buf [0] = code;
+ arm_ldaxrw (code, ARMREG_IP0, sreg1);
+ arm_addx (code, ARMREG_IP0, ARMREG_IP0, sreg2);
+ arm_stlxrw (code, ARMREG_IP1, ARMREG_IP0, sreg1);
+ arm_cbnzw (code, ARMREG_IP1, buf [0]);
+
+ arm_movx (code, dreg, ARMREG_IP0);
+ break;
+ }
+ case OP_ATOMIC_ADD_I8: {
+ guint8 *buf [16];
+
+ buf [0] = code;
+ arm_ldaxrx (code, ARMREG_IP0, sreg1);
+ arm_addx (code, ARMREG_IP0, ARMREG_IP0, sreg2);
+ arm_stlxrx (code, ARMREG_IP1, ARMREG_IP0, sreg1);
+ arm_cbnzx (code, ARMREG_IP1, buf [0]);
+
+ arm_movx (code, dreg, ARMREG_IP0);
+ break;
+ }
+ case OP_ATOMIC_EXCHANGE_I4: {
+ guint8 *buf [16];
+
+ buf [0] = code;
+ arm_ldaxrw (code, ARMREG_IP0, sreg1);
+ arm_stlxrw (code, ARMREG_IP1, sreg2, sreg1);
+ arm_cbnzw (code, ARMREG_IP1, buf [0]);
+
+ arm_movx (code, dreg, ARMREG_IP0);
+ break;
+ }
+ case OP_ATOMIC_EXCHANGE_I8: {
+ guint8 *buf [16];
+
+ buf [0] = code;
+ arm_ldaxrx (code, ARMREG_IP0, sreg1);
+ arm_stlxrx (code, ARMREG_IP1, sreg2, sreg1);
+ arm_cbnzw (code, ARMREG_IP1, buf [0]);
+
+ arm_movx (code, dreg, ARMREG_IP0);
+ break;
+ }
+ case OP_ATOMIC_CAS_I4: {
+ guint8 *buf [16];
+
+ /* sreg2 is the value, sreg3 is the comparand */
+ buf [0] = code;
+ arm_ldaxrw (code, ARMREG_IP0, sreg1);
+ arm_cmpw (code, ARMREG_IP0, ins->sreg3);
+ buf [1] = code;
+ arm_bcc (code, ARMCOND_NE, 0);
+ arm_stlxrw (code, ARMREG_IP1, sreg2, sreg1);
+ arm_cbnzw (code, ARMREG_IP1, buf [0]);
+ arm_patch_rel (buf [1], code, MONO_R_ARM64_BCC);
+
+ arm_movx (code, dreg, ARMREG_IP0);
+ break;
+ }
+ case OP_ATOMIC_CAS_I8: {
+ guint8 *buf [16];
+
+ buf [0] = code;
+ arm_ldaxrx (code, ARMREG_IP0, sreg1);
+ arm_cmpx (code, ARMREG_IP0, ins->sreg3);
+ buf [1] = code;
+ arm_bcc (code, ARMCOND_NE, 0);
+ arm_stlxrx (code, ARMREG_IP1, sreg2, sreg1);
+ arm_cbnzw (code, ARMREG_IP1, buf [0]);
+ arm_patch_rel (buf [1], code, MONO_R_ARM64_BCC);
+
+ arm_movx (code, dreg, ARMREG_IP0);
+ break;
+ }
+ case OP_ATOMIC_LOAD_I1: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarb (code, ins->dreg, ARMREG_LR);
+ arm_sxtbx (code, ins->dreg, ins->dreg);
+ break;
+ }
+ case OP_ATOMIC_LOAD_U1: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarb (code, ins->dreg, ARMREG_LR);
+ arm_uxtbx (code, ins->dreg, ins->dreg);
+ break;
+ }
+ case OP_ATOMIC_LOAD_I2: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarh (code, ins->dreg, ARMREG_LR);
+ arm_sxthx (code, ins->dreg, ins->dreg);
+ break;
+ }
+ case OP_ATOMIC_LOAD_U2: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarh (code, ins->dreg, ARMREG_LR);
+ arm_uxthx (code, ins->dreg, ins->dreg);
+ break;
+ }
+ case OP_ATOMIC_LOAD_I4: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarw (code, ins->dreg, ARMREG_LR);
+ arm_sxtwx (code, ins->dreg, ins->dreg);
+ break;
+ }
+ case OP_ATOMIC_LOAD_U4: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarw (code, ins->dreg, ARMREG_LR);
+ arm_movw (code, ins->dreg, ins->dreg); /* Clear upper half of the register. */
+ break;
+ }
+ case OP_ATOMIC_LOAD_I8:
+ case OP_ATOMIC_LOAD_U8: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarx (code, ins->dreg, ARMREG_LR);
+ break;
+ }
+ case OP_ATOMIC_LOAD_R4: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ if (cfg->r4fp) {
+ arm_ldarw (code, ARMREG_LR, ARMREG_LR);
+ arm_fmov_rx_to_double (code, ins->dreg, ARMREG_LR);
+ } else {
+ arm_ldarw (code, ARMREG_LR, ARMREG_LR);
+ arm_fmov_rx_to_double (code, FP_TEMP_REG, ARMREG_LR);
+ arm_fcvt_sd (code, ins->dreg, FP_TEMP_REG);
+ }
+ break;
+ }
+ case OP_ATOMIC_LOAD_R8: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_basereg, ins->inst_offset);
+ arm_ldarx (code, ARMREG_LR, ARMREG_LR);
+ arm_fmov_rx_to_double (code, ins->dreg, ARMREG_LR);
+ break;
+ }
+ case OP_ATOMIC_STORE_I1:
+ case OP_ATOMIC_STORE_U1: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_destbasereg, ins->inst_offset);
+ arm_stlrb (code, ARMREG_LR, ins->sreg1);
+ break;
+ }
+ case OP_ATOMIC_STORE_I2:
+ case OP_ATOMIC_STORE_U2: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_destbasereg, ins->inst_offset);
+ arm_stlrh (code, ARMREG_LR, ins->sreg1);
+ break;
+ }
+ case OP_ATOMIC_STORE_I4:
+ case OP_ATOMIC_STORE_U4: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_destbasereg, ins->inst_offset);
+ arm_stlrw (code, ARMREG_LR, ins->sreg1);
+ break;
+ }
+ case OP_ATOMIC_STORE_I8:
+ case OP_ATOMIC_STORE_U8: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_destbasereg, ins->inst_offset);
+ arm_stlrx (code, ARMREG_LR, ins->sreg1);
+ break;
+ }
+ case OP_ATOMIC_STORE_R4: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_destbasereg, ins->inst_offset);
+ if (cfg->r4fp) {
+ arm_fmov_double_to_rx (code, ARMREG_IP0, ins->sreg1);
+ arm_stlrw (code, ARMREG_LR, ARMREG_IP0);
+ } else {
+ arm_fcvt_ds (code, FP_TEMP_REG, ins->sreg1);
+ arm_fmov_double_to_rx (code, ARMREG_IP0, FP_TEMP_REG);
+ arm_stlrw (code, ARMREG_LR, ARMREG_IP0);
+ }
+ break;
+ }
+ case OP_ATOMIC_STORE_R8: {
+ code = emit_addx_imm (code, ARMREG_LR, ins->inst_destbasereg, ins->inst_offset);
+ arm_fmov_double_to_rx (code, ARMREG_IP0, ins->sreg1);
+ arm_stlrx (code, ARMREG_LR, ARMREG_IP0);
+ break;
+ }
+
+ /* FP */
+ case OP_R8CONST: {
+ guint64 imm = *(guint64*)ins->inst_p0;
+
+ if (imm == 0) {
+ arm_fmov_rx_to_double (code, dreg, ARMREG_RZR);
+ } else {
+ code = emit_imm64 (code, ARMREG_LR, imm);
+ arm_fmov_rx_to_double (code, ins->dreg, ARMREG_LR);
+ }
+ break;
+ }
+ case OP_R4CONST: {
+ guint64 imm = *(guint32*)ins->inst_p0;
+
+ code = emit_imm64 (code, ARMREG_LR, imm);
+ if (cfg->r4fp) {
+ arm_fmov_rx_to_double (code, dreg, ARMREG_LR);
+ } else {
+ arm_fmov_rx_to_double (code, FP_TEMP_REG, ARMREG_LR);
+ arm_fcvt_sd (code, dreg, FP_TEMP_REG);
+ }
+ break;
+ }
+ case OP_LOADR8_MEMBASE:
+ code = emit_ldrfpx (code, dreg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case OP_LOADR4_MEMBASE:
+ if (cfg->r4fp) {
+ code = emit_ldrfpw (code, dreg, ins->inst_basereg, ins->inst_offset);
+ } else {
+ code = emit_ldrfpw (code, FP_TEMP_REG, ins->inst_basereg, ins->inst_offset);
+ arm_fcvt_sd (code, dreg, FP_TEMP_REG);
+ }
+ break;
+ case OP_STORER8_MEMBASE_REG:
+ code = emit_strfpx (code, sreg1, ins->inst_destbasereg, ins->inst_offset);
+ break;
+ case OP_STORER4_MEMBASE_REG:
+ if (cfg->r4fp) {
+ code = emit_strfpw (code, sreg1, ins->inst_destbasereg, ins->inst_offset);
+ } else {
+ arm_fcvt_ds (code, FP_TEMP_REG, sreg1);
+ code = emit_strfpw (code, FP_TEMP_REG, ins->inst_destbasereg, ins->inst_offset);
+ }
+ break;
+ case OP_FMOVE:
+ if (dreg != sreg1)
+ arm_fmovd (code, dreg, sreg1);
+ break;
+ case OP_RMOVE:
+ if (dreg != sreg1)
+ arm_fmovs (code, dreg, sreg1);
+ break;
+ case OP_MOVE_F_TO_I4:
+ if (cfg->r4fp) {
+ arm_fmov_double_to_rx (code, ins->dreg, ins->sreg1);
+ } else {
+ arm_fcvt_ds (code, ins->dreg, ins->sreg1);
+ arm_fmov_double_to_rx (code, ins->dreg, ins->dreg);
+ }
+ break;
+ case OP_MOVE_I4_TO_F:
+ if (cfg->r4fp) {
+ arm_fmov_rx_to_double (code, ins->dreg, ins->sreg1);
+ } else {
+ arm_fmov_rx_to_double (code, ins->dreg, ins->sreg1);
+ arm_fcvt_sd (code, ins->dreg, ins->dreg);
+ }
+ break;
+ case OP_MOVE_F_TO_I8:
+ arm_fmov_double_to_rx (code, ins->dreg, ins->sreg1);
+ break;
+ case OP_MOVE_I8_TO_F:
+ arm_fmov_rx_to_double (code, ins->dreg, ins->sreg1);
+ break;
+ case OP_FCOMPARE:
+ arm_fcmpd (code, sreg1, sreg2);
+ break;
+ case OP_RCOMPARE:
+ arm_fcmps (code, sreg1, sreg2);
+ break;
+ case OP_FCONV_TO_I1:
+ arm_fcvtzs_dx (code, dreg, sreg1);
+ arm_sxtbx (code, dreg, dreg);
+ break;
+ case OP_FCONV_TO_U1:
+ arm_fcvtzu_dx (code, dreg, sreg1);
+ arm_uxtbw (code, dreg, dreg);
+ break;
+ case OP_FCONV_TO_I2:
+ arm_fcvtzs_dx (code, dreg, sreg1);
+ arm_sxthx (code, dreg, dreg);
+ break;
+ case OP_FCONV_TO_U2:
+ arm_fcvtzu_dx (code, dreg, sreg1);
+ arm_uxthw (code, dreg, dreg);
+ break;
+ case OP_FCONV_TO_I4:
+ arm_fcvtzs_dx (code, dreg, sreg1);
+ arm_sxtwx (code, dreg, dreg);
+ break;
+ case OP_FCONV_TO_U4:
+ arm_fcvtzu_dx (code, dreg, sreg1);
+ break;
+ case OP_FCONV_TO_I8:
+ arm_fcvtzs_dx (code, dreg, sreg1);
+ break;
+ case OP_FCONV_TO_U8:
+ arm_fcvtzu_dx (code, dreg, sreg1);
+ break;
+ case OP_FCONV_TO_R4:
+ if (cfg->r4fp) {
+ arm_fcvt_ds (code, dreg, sreg1);
+ } else {
+ arm_fcvt_ds (code, FP_TEMP_REG, sreg1);
+ arm_fcvt_sd (code, dreg, FP_TEMP_REG);
+ }
+ break;
+ case OP_ICONV_TO_R4:
+ if (cfg->r4fp) {
+ arm_scvtf_rw_to_s (code, dreg, sreg1);
+ } else {
+ arm_scvtf_rw_to_s (code, FP_TEMP_REG, sreg1);
+ arm_fcvt_sd (code, dreg, FP_TEMP_REG);
+ }
+ break;
+ case OP_LCONV_TO_R4:
+ if (cfg->r4fp) {
+ arm_scvtf_rx_to_s (code, dreg, sreg1);
+ } else {
+ arm_scvtf_rx_to_s (code, FP_TEMP_REG, sreg1);
+ arm_fcvt_sd (code, dreg, FP_TEMP_REG);
+ }
+ break;
+ case OP_ICONV_TO_R8:
+ arm_scvtf_rw_to_d (code, dreg, sreg1);
+ break;
+ case OP_LCONV_TO_R8:
+ arm_scvtf_rx_to_d (code, dreg, sreg1);
+ break;
+ case OP_ICONV_TO_R_UN:
+ arm_ucvtf_rw_to_d (code, dreg, sreg1);
+ break;
+ case OP_LCONV_TO_R_UN:
+ arm_ucvtf_rx_to_d (code, dreg, sreg1);
+ break;
+ case OP_FADD:
+ arm_fadd_d (code, dreg, sreg1, sreg2);
+ break;
+ case OP_FSUB:
+ arm_fsub_d (code, dreg, sreg1, sreg2);
+ break;
+ case OP_FMUL:
+ arm_fmul_d (code, dreg, sreg1, sreg2);
+ break;
+ case OP_FDIV:
+ arm_fdiv_d (code, dreg, sreg1, sreg2);
+ break;
+ case OP_FREM:
+ /* Emulated */
+ g_assert_not_reached ();
+ break;
+ case OP_FNEG:
+ arm_fneg_d (code, dreg, sreg1);
+ break;
+ case OP_ARM_SETFREG_R4:
+ arm_fcvt_ds (code, dreg, sreg1);
+ break;
+ case OP_CKFINITE:
+ /* Check for infinity */
+ code = emit_imm64 (code, ARMREG_LR, 0x7fefffffffffffffLL);
+ arm_fmov_rx_to_double (code, FP_TEMP_REG, ARMREG_LR);
+ arm_fabs_d (code, FP_TEMP_REG2, sreg1);
+ arm_fcmpd (code, FP_TEMP_REG2, FP_TEMP_REG);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_GT, "ArithmeticException");
+ /* Check for nans */
+ arm_fcmpd (code, FP_TEMP_REG2, FP_TEMP_REG2);
+ code = emit_cond_exc (cfg, code, OP_COND_EXC_OV, "ArithmeticException");
+ arm_fmovd (code, dreg, sreg1);
+ break;
+
+ /* R4 */
+ case OP_RADD:
+ arm_fadd_s (code, dreg, sreg1, sreg2);
+ break;
+ case OP_RSUB:
+ arm_fsub_s (code, dreg, sreg1, sreg2);
+ break;
+ case OP_RMUL:
+ arm_fmul_s (code, dreg, sreg1, sreg2);
+ break;
+ case OP_RDIV:
+ arm_fdiv_s (code, dreg, sreg1, sreg2);
+ break;
+ case OP_RNEG:
+ arm_fneg_s (code, dreg, sreg1);
+ break;
+ case OP_RCONV_TO_I1:
+ arm_fcvtzs_sx (code, dreg, sreg1);
+ arm_sxtbx (code, dreg, dreg);
+ break;
+ case OP_RCONV_TO_U1:
+ arm_fcvtzu_sx (code, dreg, sreg1);
+ arm_uxtbw (code, dreg, dreg);
+ break;
+ case OP_RCONV_TO_I2:
+ arm_fcvtzs_sx (code, dreg, sreg1);
+ arm_sxthx (code, dreg, dreg);
+ break;
+ case OP_RCONV_TO_U2:
+ arm_fcvtzu_sx (code, dreg, sreg1);
+ arm_uxthw (code, dreg, dreg);
+ break;
+ case OP_RCONV_TO_I4:
+ arm_fcvtzs_sx (code, dreg, sreg1);
+ arm_sxtwx (code, dreg, dreg);
+ break;
+ case OP_RCONV_TO_U4:
+ arm_fcvtzu_sx (code, dreg, sreg1);
+ break;
+ case OP_RCONV_TO_I8:
+ arm_fcvtzs_sx (code, dreg, sreg1);
+ break;
+ case OP_RCONV_TO_U8:
+ arm_fcvtzu_sx (code, dreg, sreg1);
+ break;
+ case OP_RCONV_TO_R8:
+ arm_fcvt_sd (code, dreg, sreg1);
+ break;
+ case OP_RCONV_TO_R4:
+ if (dreg != sreg1)
+ arm_fmovs (code, dreg, sreg1);
+ break;
+ case OP_RCEQ:
+ case OP_RCLT:
+ case OP_RCLT_UN:
+ case OP_RCGT:
+ case OP_RCGT_UN:
+ case OP_RCNEQ:
+ case OP_RCLE:
+ case OP_RCGE: {
+ int cond;
+
+ cond = opcode_to_armcond (ins->opcode);
+ arm_fcmps (code, sreg1, sreg2);
+ arm_cset (code, cond, dreg);
+ break;
+ }
+
+ /* CALLS */
+ case OP_VOIDCALL:
+ case OP_CALL:
+ case OP_LCALL:
+ case OP_FCALL:
+ case OP_RCALL:
+ case OP_VCALL2:
+ call = (MonoCallInst*)ins;
+ if (ins->flags & MONO_INST_HAS_METHOD)
+ code = emit_call (cfg, code, MONO_PATCH_INFO_METHOD, call->method);
+ else
+ code = emit_call (cfg, code, MONO_PATCH_INFO_ABS, call->fptr);
+ code = emit_move_return_value (cfg, code, ins);
+ break;
+ case OP_VOIDCALL_REG:
+ case OP_CALL_REG:
+ case OP_LCALL_REG:
+ case OP_FCALL_REG:
+ case OP_RCALL_REG:
+ case OP_VCALL2_REG:
+ arm_blrx (code, sreg1);
+ code = emit_move_return_value (cfg, code, ins);
+ break;
+ case OP_VOIDCALL_MEMBASE:
+ case OP_CALL_MEMBASE:
+ case OP_LCALL_MEMBASE:
+ case OP_FCALL_MEMBASE:
+ case OP_RCALL_MEMBASE:
+ case OP_VCALL2_MEMBASE:
+ code = emit_ldrx (code, ARMREG_IP0, ins->inst_basereg, ins->inst_offset);
+ arm_blrx (code, ARMREG_IP0);
+ code = emit_move_return_value (cfg, code, ins);
+ break;
+ case OP_TAILCALL: {
+ MonoCallInst *call = (MonoCallInst*)ins;
+
+ g_assert (!cfg->method->save_lmf);
+
+ // FIXME: Copy stack arguments
+
+ /* Restore registers */
+ code = emit_load_regset (code, MONO_ARCH_CALLEE_SAVED_REGS & cfg->used_int_regs, ARMREG_FP, cfg->arch.saved_gregs_offset);
+
+ /* Destroy frame */
+ code = mono_arm_emit_destroy_frame (code, cfg->stack_offset, ((1 << ARMREG_IP0) | (1 << ARMREG_IP1)));
+
+ if (cfg->compile_aot) {
+ /* This is not a PLT patch */
+ code = emit_aotconst (cfg, code, ARMREG_IP0, MONO_PATCH_INFO_METHOD_JUMP, call->method);
+ arm_brx (code, ARMREG_IP0);
+ } else {
+ mono_add_patch_info_rel (cfg, code - cfg->native_code, MONO_PATCH_INFO_METHOD_JUMP, call->method, MONO_R_ARM64_B);
+ arm_b (code, code);
+ }
+ ins->flags |= MONO_INST_GC_CALLSITE;
+ ins->backend.pc_offset = code - cfg->native_code;
+ break;
+ }
+ case OP_ARGLIST:
+ g_assert (cfg->arch.cinfo);
+ code = emit_addx_imm (code, ARMREG_IP0, cfg->arch.args_reg, ((CallInfo*)cfg->arch.cinfo)->sig_cookie.offset);
+ arm_strx (code, ARMREG_IP0, sreg1, 0);
+ break;
+ case OP_DYN_CALL: {
+ MonoInst *var = cfg->dyn_call_var;
+ guint8 *labels [16];
+ int i;
+
+ /*
+ * sreg1 points to a DynCallArgs structure initialized by mono_arch_start_dyn_call ().
+ * sreg2 is the function to call.
+ */
+
+ g_assert (var->opcode == OP_REGOFFSET);
+
+ arm_movx (code, ARMREG_LR, sreg1);
+ arm_movx (code, ARMREG_IP1, sreg2);
+
+ /* Save args buffer */
+ code = emit_strx (code, ARMREG_LR, var->inst_basereg, var->inst_offset);
+
+ /* Set fp argument regs */
+ code = emit_ldrw (code, ARMREG_R0, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, n_fpargs));
+ arm_cmpw (code, ARMREG_R0, ARMREG_RZR);
+ labels [0] = code;
+ arm_bcc (code, ARMCOND_EQ, 0);
+ for (i = 0; i < 8; ++i)
+ code = emit_ldrfpx (code, ARMREG_D0 + i, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, fpregs) + (i * 8));
+ arm_patch_rel (labels [0], code, MONO_R_ARM64_BCC);
+
+ /* Set stack args */
+ for (i = 0; i < DYN_CALL_STACK_ARGS; ++i) {
+ code = emit_ldrx (code, ARMREG_R0, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, regs) + ((PARAM_REGS + 1 + i) * sizeof (mgreg_t)));
+ code = emit_strx (code, ARMREG_R0, ARMREG_SP, i * sizeof (mgreg_t));
+ }
+
+ /* Set argument registers + r8 */
+ code = mono_arm_emit_load_regarray (code, 0x1ff, ARMREG_LR, 0);
+
+ /* Make the call */
+ arm_blrx (code, ARMREG_IP1);
+
+ /* Save result */
+ code = emit_ldrx (code, ARMREG_LR, var->inst_basereg, var->inst_offset);
+ arm_strx (code, ARMREG_R0, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, res));
+ arm_strx (code, ARMREG_R1, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, res2));
+ /* Save fp result */
+ code = emit_ldrw (code, ARMREG_R0, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, n_fpret));
+ arm_cmpw (code, ARMREG_R0, ARMREG_RZR);
+ labels [1] = code;
+ arm_bcc (code, ARMCOND_EQ, 0);
+ for (i = 0; i < 8; ++i)
+ code = emit_strfpx (code, ARMREG_D0 + i, ARMREG_LR, MONO_STRUCT_OFFSET (DynCallArgs, fpregs) + (i * 8));
+ arm_patch_rel (labels [1], code, MONO_R_ARM64_BCC);
+ break;
+ }
+
+ case OP_GENERIC_CLASS_INIT: {
+ static int byte_offset = -1;
+ static guint8 bitmask;
+ guint8 *jump;
+
+ if (byte_offset < 0)
+ mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
+
+ /* Load vtable->initialized */
+ arm_ldrsbx (code, ARMREG_IP0, sreg1, byte_offset);
+ // FIXME: No andx_imm yet */
+ code = mono_arm_emit_imm64 (code, ARMREG_IP1, bitmask);
+ arm_andx (code, ARMREG_IP0, ARMREG_IP0, ARMREG_IP1);
+ jump = code;
+ arm_cbnzx (code, ARMREG_IP0, 0);
+
+ /* Slowpath */
+ g_assert (sreg1 == ARMREG_R0);
+ code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
+ (gpointer)"mono_generic_class_init");
+
+ mono_arm_patch (jump, code, MONO_R_ARM64_CBZ);
+ break;
+ }
+
+ case OP_CHECK_THIS:
+ arm_ldrx (code, ARMREG_LR, sreg1, 0);
+ break;
+ case OP_NOT_NULL:
+ case OP_NOT_REACHED:
+ case OP_DUMMY_USE:
+ break;
+ case OP_IL_SEQ_POINT:
+ mono_add_seq_point (cfg, bb, ins, code - cfg->native_code);
+ break;
+
+ /* EH */
+ case OP_COND_EXC_C:
+ case OP_COND_EXC_IC:
+ case OP_COND_EXC_OV:
+ case OP_COND_EXC_IOV:
+ case OP_COND_EXC_NC:
+ case OP_COND_EXC_INC:
+ case OP_COND_EXC_NO:
+ case OP_COND_EXC_INO:
+ case OP_COND_EXC_EQ:
+ case OP_COND_EXC_IEQ:
+ case OP_COND_EXC_NE_UN:
+ case OP_COND_EXC_INE_UN:
+ case OP_COND_EXC_ILT:
+ case OP_COND_EXC_LT:
+ case OP_COND_EXC_ILT_UN:
+ case OP_COND_EXC_LT_UN:
+ case OP_COND_EXC_IGT:
+ case OP_COND_EXC_GT:
+ case OP_COND_EXC_IGT_UN:
+ case OP_COND_EXC_GT_UN:
+ case OP_COND_EXC_IGE:
+ case OP_COND_EXC_GE:
+ case OP_COND_EXC_IGE_UN:
+ case OP_COND_EXC_GE_UN:
+ case OP_COND_EXC_ILE:
+ case OP_COND_EXC_LE:
+ case OP_COND_EXC_ILE_UN:
+ case OP_COND_EXC_LE_UN:
+ code = emit_cond_exc (cfg, code, ins->opcode, ins->inst_p1);
+ break;
+ case OP_THROW:
+ if (sreg1 != ARMREG_R0)
+ arm_movx (code, ARMREG_R0, sreg1);
+ code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
+ (gpointer)"mono_arch_throw_exception");
+ break;
+ case OP_RETHROW:
+ if (sreg1 != ARMREG_R0)
+ arm_movx (code, ARMREG_R0, sreg1);
+ code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD,
+ (gpointer)"mono_arch_rethrow_exception");
+ break;
+ case OP_CALL_HANDLER:
+ mono_add_patch_info_rel (cfg, offset, MONO_PATCH_INFO_BB, ins->inst_target_bb, MONO_R_ARM64_BL);
+ arm_bl (code, 0);
+ cfg->thunk_area += THUNK_SIZE;
+ break;
+ case OP_START_HANDLER: {
+ MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
+
+ /* Save caller address */
+ code = emit_strx (code, ARMREG_LR, spvar->inst_basereg, spvar->inst_offset);
+
+ /*
+ * Reserve a param area, see test_0_finally_param_area ().
+ * This is needed because the param area is not set up when
+ * we are called from EH code.
+ */
+ if (cfg->param_area)
+ code = emit_subx_sp_imm (code, cfg->param_area);
+ break;
+ }
+ case OP_ENDFINALLY:
+ case OP_ENDFILTER: {
+ MonoInst *spvar = mono_find_spvar_for_region (cfg, bb->region);
+
+ if (cfg->param_area)
+ code = emit_addx_sp_imm (code, cfg->param_area);
+
+ if (ins->opcode == OP_ENDFILTER && sreg1 != ARMREG_R0)
+ arm_movx (code, ARMREG_R0, sreg1);
+
+ /* Return to either after the branch in OP_CALL_HANDLER, or to the EH code */
+ code = emit_ldrx (code, ARMREG_LR, spvar->inst_basereg, spvar->inst_offset);
+ arm_brx (code, ARMREG_LR);
+ break;
+ }
+ case OP_GET_EX_OBJ:
+ if (ins->dreg != ARMREG_R0)
+ arm_movx (code, ins->dreg, ARMREG_R0);
+ break;
+ case OP_GC_SAFE_POINT: {
+#if defined (USE_COOP_GC)
+ guint8 *buf [1];
+
+ arm_ldrx (code, ARMREG_IP1, ins->sreg1, 0);
+ /* Call it if it is non-null */
+ buf [0] = code;
+ arm_cbzx (code, ARMREG_IP1, 0);
+ code = emit_call (cfg, code, MONO_PATCH_INFO_INTERNAL_METHOD, "mono_threads_state_poll");
+ mono_arm_patch (buf [0], code, MONO_R_ARM64_CBZ);
+#endif
+ break;
+ }
+
+ default:
+ g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
+ g_assert_not_reached ();
+ }
+
+ if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
+ g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
+ mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
+ g_assert_not_reached ();
+ }
+ }
+
+ /*
+ * If the compiled code size is larger than the bcc displacement (19 bits signed),
+ * insert branch islands between/inside basic blocks.
+ */
+ if (cfg->arch.cond_branch_islands)
+ code = emit_branch_island (cfg, code, start_offset);
+
+ cfg->code_len = code - cfg->native_code;
+}
+
+static guint8*
+emit_move_args (MonoCompile *cfg, guint8 *code)
+{
+ MonoInst *ins;
+ CallInfo *cinfo;
+ ArgInfo *ainfo;
+ int i, part;
+
+ cinfo = cfg->arch.cinfo;
+ g_assert (cinfo);
+ for (i = 0; i < cinfo->nargs; ++i) {
+ ainfo = cinfo->args + i;
+ ins = cfg->args [i];
+
+ if (ins->opcode == OP_REGVAR) {
+ switch (ainfo->storage) {
+ case ArgInIReg:
+ arm_movx (code, ins->dreg, ainfo->reg);
+ break;
+ case ArgOnStack:
+ switch (ainfo->slot_size) {
+ case 1:
+ if (ainfo->sign)
+ code = emit_ldrsbx (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ else
+ code = emit_ldrb (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ break;
+ case 2:
+ if (ainfo->sign)
+ code = emit_ldrshx (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ else
+ code = emit_ldrh (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ break;
+ case 4:
+ if (ainfo->sign)
+ code = emit_ldrswx (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ else
+ code = emit_ldrw (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ break;
+ default:
+ code = emit_ldrx (code, ins->dreg, cfg->arch.args_reg, ainfo->offset);
+ break;
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ } else {
+ if (ainfo->storage != ArgVtypeByRef && ainfo->storage != ArgVtypeByRefOnStack)
+ g_assert (ins->opcode == OP_REGOFFSET);
+
+ switch (ainfo->storage) {
+ case ArgInIReg:
+ /* Stack slots for arguments have size 8 */
+ code = emit_strx (code, ainfo->reg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case ArgInFReg:
+ code = emit_strfpx (code, ainfo->reg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case ArgInFRegR4:
+ code = emit_strfpw (code, ainfo->reg, ins->inst_basereg, ins->inst_offset);
+ break;
+ case ArgOnStack:
+ case ArgOnStackR4:
+ case ArgOnStackR8:
+ case ArgVtypeByRefOnStack:
+ case ArgVtypeOnStack:
+ break;
+ case ArgVtypeByRef: {
+ MonoInst *addr_arg = ins->inst_left;
+
+ if (ainfo->gsharedvt) {
+ g_assert (ins->opcode == OP_GSHAREDVT_ARG_REGOFFSET);
+ arm_strx (code, ainfo->reg, ins->inst_basereg, ins->inst_offset);
+ } else {
+ g_assert (ins->opcode == OP_VTARG_ADDR);
+ g_assert (addr_arg->opcode == OP_REGOFFSET);
+ arm_strx (code, ainfo->reg, addr_arg->inst_basereg, addr_arg->inst_offset);
+ }
+ break;
+ }
+ case ArgVtypeInIRegs:
+ for (part = 0; part < ainfo->nregs; part ++) {
+ code = emit_strx (code, ainfo->reg + part, ins->inst_basereg, ins->inst_offset + (part * 8));
+ }
+ break;
+ case ArgHFA:
+ for (part = 0; part < ainfo->nregs; part ++) {
+ if (ainfo->esize == 4)
+ code = emit_strfpw (code, ainfo->reg + part, ins->inst_basereg, ins->inst_offset + ainfo->foffsets [part]);
+ else
+ code = emit_strfpx (code, ainfo->reg + part, ins->inst_basereg, ins->inst_offset + ainfo->foffsets [part]);
+ }
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+ }
+ }
+
+ return code;
+}
+
+/*
+ * emit_store_regarray:
+ *
+ * Emit code to store the registers in REGS into the appropriate elements of
+ * the register array at BASEREG+OFFSET.
+ */
+static __attribute__((warn_unused_result)) guint8*
+emit_store_regarray (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ int i;
+
+ for (i = 0; i < 32; ++i) {
+ if (regs & (1 << i)) {
+ if (i + 1 < 32 && (regs & (1 << (i + 1))) && (i + 1 != ARMREG_SP)) {
+ arm_stpx (code, i, i + 1, basereg, offset + (i * 8));
+ i++;
+ } else if (i == ARMREG_SP) {
+ arm_movspx (code, ARMREG_IP1, ARMREG_SP);
+ arm_strx (code, ARMREG_IP1, basereg, offset + (i * 8));
+ } else {
+ arm_strx (code, i, basereg, offset + (i * 8));
+ }
+ }
+ }
+ return code;
+}
+
+/*
+ * emit_load_regarray:
+ *
+ * Emit code to load the registers in REGS from the appropriate elements of
+ * the register array at BASEREG+OFFSET.
+ */
+static __attribute__((warn_unused_result)) guint8*
+emit_load_regarray (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ int i;
+
+ for (i = 0; i < 32; ++i) {
+ if (regs & (1 << i)) {
+ if ((regs & (1 << (i + 1))) && (i + 1 != ARMREG_SP)) {
+ if (offset + (i * 8) < 500)
+ arm_ldpx (code, i, i + 1, basereg, offset + (i * 8));
+ else {
+ code = emit_ldrx (code, i, basereg, offset + (i * 8));
+ code = emit_ldrx (code, i + 1, basereg, offset + ((i + 1) * 8));
+ }
+ i++;
+ } else if (i == ARMREG_SP) {
+ g_assert_not_reached ();
+ } else {
+ code = emit_ldrx (code, i, basereg, offset + (i * 8));
+ }
+ }
+ }
+ return code;
+}
+
+/*
+ * emit_store_regset:
+ *
+ * Emit code to store the registers in REGS into consecutive memory locations starting
+ * at BASEREG+OFFSET.
+ */
+static __attribute__((warn_unused_result)) guint8*
+emit_store_regset (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ int i, pos;
+
+ pos = 0;
+ for (i = 0; i < 32; ++i) {
+ if (regs & (1 << i)) {
+ if ((regs & (1 << (i + 1))) && (i + 1 != ARMREG_SP)) {
+ arm_stpx (code, i, i + 1, basereg, offset + (pos * 8));
+ i++;
+ pos++;
+ } else if (i == ARMREG_SP) {
+ arm_movspx (code, ARMREG_IP1, ARMREG_SP);
+ arm_strx (code, ARMREG_IP1, basereg, offset + (pos * 8));
+ } else {
+ arm_strx (code, i, basereg, offset + (pos * 8));
+ }
+ pos++;
+ }
+ }
+ return code;
+}
+
+/*
+ * emit_load_regset:
+ *
+ * Emit code to load the registers in REGS from consecutive memory locations starting
+ * at BASEREG+OFFSET.
+ */
+static __attribute__((warn_unused_result)) guint8*
+emit_load_regset (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ int i, pos;
+
+ pos = 0;
+ for (i = 0; i < 32; ++i) {
+ if (regs & (1 << i)) {
+ if ((regs & (1 << (i + 1))) && (i + 1 != ARMREG_SP)) {
+ arm_ldpx (code, i, i + 1, basereg, offset + (pos * 8));
+ i++;
+ pos++;
+ } else if (i == ARMREG_SP) {
+ g_assert_not_reached ();
+ } else {
+ arm_ldrx (code, i, basereg, offset + (pos * 8));
+ }
+ pos++;
+ }
+ }
+ return code;
+}
+
+__attribute__((warn_unused_result)) guint8*
+mono_arm_emit_load_regarray (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ return emit_load_regarray (code, regs, basereg, offset);
+}
+
+__attribute__((warn_unused_result)) guint8*
+mono_arm_emit_store_regarray (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ return emit_store_regarray (code, regs, basereg, offset);
+}
+
+__attribute__((warn_unused_result)) guint8*
+mono_arm_emit_store_regset (guint8 *code, guint64 regs, int basereg, int offset)
+{
+ return emit_store_regset (code, regs, basereg, offset);
+}
+
+/* Same as emit_store_regset, but emit unwind info too */
+/* CFA_OFFSET is the offset between the CFA and basereg */
+static __attribute__((warn_unused_result)) guint8*
+emit_store_regset_cfa (MonoCompile *cfg, guint8 *code, guint64 regs, int basereg, int offset, int cfa_offset, guint64 no_cfa_regset)
+{
+ int i, j, pos, nregs;
+ guint32 cfa_regset = regs & ~no_cfa_regset;
+
+ pos = 0;
+ for (i = 0; i < 32; ++i) {
+ nregs = 1;
+ if (regs & (1 << i)) {
+ if ((regs & (1 << (i + 1))) && (i + 1 != ARMREG_SP)) {
+ if (offset < 256) {
+ arm_stpx (code, i, i + 1, basereg, offset + (pos * 8));
+ } else {
+ code = emit_strx (code, i, basereg, offset + (pos * 8));
+ code = emit_strx (code, i + 1, basereg, offset + (pos * 8) + 8);
+ }
+ nregs = 2;
+ } else if (i == ARMREG_SP) {
+ arm_movspx (code, ARMREG_IP1, ARMREG_SP);
+ code = emit_strx (code, ARMREG_IP1, basereg, offset + (pos * 8));
+ } else {
+ code = emit_strx (code, i, basereg, offset + (pos * 8));
+ }
+
+ for (j = 0; j < nregs; ++j) {
+ if (cfa_regset & (1 << (i + j)))
+ mono_emit_unwind_op_offset (cfg, code, i + j, (- cfa_offset) + offset + ((pos + j) * 8));
+ }
+
+ i += nregs - 1;
+ pos += nregs;
+ }
+ }
+ return code;
+}
+
+/*
+ * emit_setup_lmf:
+ *
+ * Emit code to initialize an LMF structure at LMF_OFFSET.
+ * Clobbers ip0/ip1.
+ */
+static guint8*
+emit_setup_lmf (MonoCompile *cfg, guint8 *code, gint32 lmf_offset, int cfa_offset)
+{
+ /*
+ * The LMF should contain all the state required to be able to reconstruct the machine state
+ * at the current point of execution. Since the LMF is only read during EH, only callee
+ * saved etc. registers need to be saved.
+ * FIXME: Save callee saved fp regs, JITted code doesn't use them, but native code does, and they
+ * need to be restored during EH.
+ */
+
+ /* pc */
+ arm_adrx (code, ARMREG_LR, code);
+ code = emit_strx (code, ARMREG_LR, ARMREG_FP, lmf_offset + MONO_STRUCT_OFFSET (MonoLMF, pc));
+ /* gregs + fp + sp */
+ /* Don't emit unwind info for sp/fp, they are already handled in the prolog */
+ code = emit_store_regset_cfa (cfg, code, MONO_ARCH_LMF_REGS, ARMREG_FP, lmf_offset + MONO_STRUCT_OFFSET (MonoLMF, gregs), cfa_offset, (1 << ARMREG_FP) | (1 << ARMREG_SP));
+
+ return code;
+}
+
+guint8 *
+mono_arch_emit_prolog (MonoCompile *cfg)
+{
+ MonoMethod *method = cfg->method;
+ MonoMethodSignature *sig;
+ MonoBasicBlock *bb;
+ guint8 *code;
+ int cfa_offset, max_offset;
+
+ sig = mono_method_signature (method);
+ cfg->code_size = 256 + sig->param_count * 64;
+ code = cfg->native_code = g_malloc (cfg->code_size);
+
+ /* This can be unaligned */
+ cfg->stack_offset = ALIGN_TO (cfg->stack_offset, MONO_ARCH_FRAME_ALIGNMENT);
+
+ /*
+ * - Setup frame
+ */
+ cfa_offset = 0;
+ mono_emit_unwind_op_def_cfa (cfg, code, ARMREG_SP, 0);
+
+ /* Setup frame */
+ if (arm_is_ldpx_imm (-cfg->stack_offset)) {
+ arm_stpx_pre (code, ARMREG_FP, ARMREG_LR, ARMREG_SP, -cfg->stack_offset);
+ } else {
+ /* sp -= cfg->stack_offset */
+ /* This clobbers ip0/ip1 */
+ code = emit_subx_sp_imm (code, cfg->stack_offset);
+ arm_stpx (code, ARMREG_FP, ARMREG_LR, ARMREG_SP, 0);
+ }
+ cfa_offset += cfg->stack_offset;
+ mono_emit_unwind_op_def_cfa_offset (cfg, code, cfa_offset);
+ mono_emit_unwind_op_offset (cfg, code, ARMREG_FP, (- cfa_offset) + 0);
+ mono_emit_unwind_op_offset (cfg, code, ARMREG_LR, (- cfa_offset) + 8);
+ arm_movspx (code, ARMREG_FP, ARMREG_SP);
+ mono_emit_unwind_op_def_cfa_reg (cfg, code, ARMREG_FP);
+ if (cfg->param_area) {
+ /* The param area is below the frame pointer */
+ code = emit_subx_sp_imm (code, cfg->param_area);
+ }
+
+ if (cfg->method->save_lmf) {
+ code = emit_setup_lmf (cfg, code, cfg->lmf_var->inst_offset, cfa_offset);
+ } else {
+ /* Save gregs */
+ code = emit_store_regset_cfa (cfg, code, MONO_ARCH_CALLEE_SAVED_REGS & cfg->used_int_regs, ARMREG_FP, cfg->arch.saved_gregs_offset, cfa_offset, 0);
+ }
+
+ /* Setup args reg */
+ if (cfg->arch.args_reg) {
+ /* The register was already saved above */
+ code = emit_addx_imm (code, cfg->arch.args_reg, ARMREG_FP, cfg->stack_offset);
+ }
+
+ /* Save return area addr received in R8 */
+ if (cfg->vret_addr) {
+ MonoInst *ins = cfg->vret_addr;
+
+ g_assert (ins->opcode == OP_REGOFFSET);
+ code = emit_strx (code, ARMREG_R8, ins->inst_basereg, ins->inst_offset);
+ }
+
+ /* Save mrgctx received in MONO_ARCH_RGCTX_REG */
+ if (cfg->rgctx_var) {
+ MonoInst *ins = cfg->rgctx_var;
+
+ g_assert (ins->opcode == OP_REGOFFSET);
+
+ code = emit_strx (code, MONO_ARCH_RGCTX_REG, ins->inst_basereg, ins->inst_offset);
+ }
+
+ /*
+ * Move arguments to their registers/stack locations.
+ */
+ code = emit_move_args (cfg, code);
+
+ /* Initialize seq_point_info_var */
+ if (cfg->arch.seq_point_info_var) {
+ MonoInst *ins = cfg->arch.seq_point_info_var;
+
+ /* Initialize the variable from a GOT slot */
+ code = emit_aotconst (cfg, code, ARMREG_IP0, MONO_PATCH_INFO_SEQ_POINT_INFO, cfg->method);
+ g_assert (ins->opcode == OP_REGOFFSET);
+ code = emit_strx (code, ARMREG_IP0, ins->inst_basereg, ins->inst_offset);
+
+ /* Initialize ss_tramp_var */
+ ins = cfg->arch.ss_tramp_var;
+ g_assert (ins->opcode == OP_REGOFFSET);
+
+ code = emit_ldrx (code, ARMREG_IP1, ARMREG_IP0, MONO_STRUCT_OFFSET (SeqPointInfo, ss_tramp_addr));
+ code = emit_strx (code, ARMREG_IP1, ins->inst_basereg, ins->inst_offset);
+ } else {
+ MonoInst *ins;
+
+ if (cfg->arch.ss_tramp_var) {
+ /* Initialize ss_tramp_var */
+ ins = cfg->arch.ss_tramp_var;
+ g_assert (ins->opcode == OP_REGOFFSET);
+
+ code = emit_imm64 (code, ARMREG_IP0, (guint64)&ss_trampoline);
+ code = emit_strx (code, ARMREG_IP0, ins->inst_basereg, ins->inst_offset);
+ }
+
+ if (cfg->arch.bp_tramp_var) {
+ /* Initialize bp_tramp_var */
+ ins = cfg->arch.bp_tramp_var;
+ g_assert (ins->opcode == OP_REGOFFSET);
+
+ code = emit_imm64 (code, ARMREG_IP0, (guint64)bp_trampoline);
+ code = emit_strx (code, ARMREG_IP0, ins->inst_basereg, ins->inst_offset);
+ }
+ }
+
+ max_offset = 0;
+ if (cfg->opt & MONO_OPT_BRANCH) {
+ for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
+ MonoInst *ins;
+ bb->max_offset = max_offset;
+
+ MONO_BB_FOR_EACH_INS (bb, ins) {
+ max_offset += ((guint8 *)ins_get_spec (ins->opcode))[MONO_INST_LEN];
+ }
+ }
+ }
+ if (max_offset > 0x3ffff * 4)
+ cfg->arch.cond_branch_islands = TRUE;
+
+ return code;
+}
+
+static guint8*
+realloc_code (MonoCompile *cfg, int size)
+{
+ while (cfg->code_len + size > (cfg->code_size - 16)) {
+ cfg->code_size *= 2;
+ cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
+ cfg->stat_code_reallocs++;
+ }
+ return cfg->native_code + cfg->code_len;
+}
+
+void
+mono_arch_emit_epilog (MonoCompile *cfg)
+{
+ CallInfo *cinfo;
+ int max_epilog_size;
+ guint8 *code;
+ int i;
+
+ max_epilog_size = 16 + 20*4;
+ code = realloc_code (cfg, max_epilog_size);
+
+ if (cfg->method->save_lmf) {
+ code = mono_arm_emit_load_regarray (code, MONO_ARCH_CALLEE_SAVED_REGS & cfg->used_int_regs, ARMREG_FP, cfg->lmf_var->inst_offset + MONO_STRUCT_OFFSET (MonoLMF, gregs) - (MONO_ARCH_FIRST_LMF_REG * 8));
+ } else {
+ /* Restore gregs */
+ code = emit_load_regset (code, MONO_ARCH_CALLEE_SAVED_REGS & cfg->used_int_regs, ARMREG_FP, cfg->arch.saved_gregs_offset);
+ }
+
+ /* Load returned vtypes into registers if needed */
+ cinfo = cfg->arch.cinfo;
+ switch (cinfo->ret.storage) {
+ case ArgVtypeInIRegs: {
+ MonoInst *ins = cfg->ret;
+
+ for (i = 0; i < cinfo->ret.nregs; ++i)
+ code = emit_ldrx (code, cinfo->ret.reg + i, ins->inst_basereg, ins->inst_offset + (i * 8));
+ break;
+ }
+ case ArgHFA: {
+ MonoInst *ins = cfg->ret;
+
+ for (i = 0; i < cinfo->ret.nregs; ++i) {
+ if (cinfo->ret.esize == 4)
+ code = emit_ldrfpw (code, cinfo->ret.reg + i, ins->inst_basereg, ins->inst_offset + cinfo->ret.foffsets [i]);
+ else
+ code = emit_ldrfpx (code, cinfo->ret.reg + i, ins->inst_basereg, ins->inst_offset + cinfo->ret.foffsets [i]);
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ /* Destroy frame */
+ code = mono_arm_emit_destroy_frame (code, cfg->stack_offset, ((1 << ARMREG_IP0) | (1 << ARMREG_IP1)));
+
+ arm_retx (code, ARMREG_LR);
+
+ g_assert (code - (cfg->native_code + cfg->code_len) < max_epilog_size);
+
+ cfg->code_len = code - cfg->native_code;
+}
+
+void
+mono_arch_emit_exceptions (MonoCompile *cfg)
+{
+ MonoJumpInfo *ji;
+ MonoClass *exc_class;
+ guint8 *code, *ip;
+ guint8* exc_throw_pos [MONO_EXC_INTRINS_NUM];
+ guint8 exc_throw_found [MONO_EXC_INTRINS_NUM];
+ int i, id, size = 0;
+
+ for (i = 0; i < MONO_EXC_INTRINS_NUM; i++) {
+ exc_throw_pos [i] = NULL;
+ exc_throw_found [i] = 0;
+ }
+
+ for (ji = cfg->patch_info; ji; ji = ji->next) {
+ if (ji->type == MONO_PATCH_INFO_EXC) {
+ i = mini_exception_id_by_name (ji->data.target);
+ if (!exc_throw_found [i]) {
+ size += 32;
+ exc_throw_found [i] = TRUE;
+ }
+ }
+ }
+
+ code = realloc_code (cfg, size);
+
+ /* Emit code to raise corlib exceptions */
+ for (ji = cfg->patch_info; ji; ji = ji->next) {
+ if (ji->type != MONO_PATCH_INFO_EXC)
+ continue;
+
+ ip = cfg->native_code + ji->ip.i;
+
+ id = mini_exception_id_by_name (ji->data.target);
+
+ if (exc_throw_pos [id]) {
+ /* ip points to the bcc () in OP_COND_EXC_... */
+ arm_patch_rel (ip, exc_throw_pos [id], ji->relocation);
+ ji->type = MONO_PATCH_INFO_NONE;
+ continue;
+ }
+
+ exc_throw_pos [id] = code;
+ arm_patch_rel (ip, code, ji->relocation);
+
+ /* We are being branched to from the code generated by emit_cond_exc (), the pc is in ip1 */
+
+ /* r0 = type token */
+ exc_class = mono_class_load_from_name (mono_defaults.corlib, "System", ji->data.name);
+ code = emit_imm (code, ARMREG_R0, exc_class->type_token - MONO_TOKEN_TYPE_DEF);
+ /* r1 = throw ip */
+ arm_movx (code, ARMREG_R1, ARMREG_IP1);
+ /* Branch to the corlib exception throwing trampoline */
+ ji->ip.i = code - cfg->native_code;
+ ji->type = MONO_PATCH_INFO_INTERNAL_METHOD;
+ ji->data.name = "mono_arch_throw_corlib_exception";
+ ji->relocation = MONO_R_ARM64_BL;
+ arm_bl (code, 0);
+ cfg->thunk_area += THUNK_SIZE;
+ }
+
+ cfg->code_len = code - cfg->native_code;
+
+ g_assert (cfg->code_len < cfg->code_size);
+}
+
+MonoInst*
+mono_arch_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
+{
+ return NULL;
+}
+
+gboolean
+mono_arch_print_tree (MonoInst *tree, int arity)
+{
+ return FALSE;
+}
+
+guint32
+mono_arch_get_patch_offset (guint8 *code)
+{
+ return 0;
+}
+
+gpointer
+mono_arch_build_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count,
+ gpointer fail_tramp)
+{
+ int i, buf_len, imt_reg;
+ guint8 *buf, *code;
+
+#if DEBUG_IMT
+ printf ("building IMT thunk for class %s %s entries %d code size %d code at %p end %p vtable %p\n", vtable->klass->name_space, vtable->klass->name, count, size, start, ((guint8*)start) + size, vtable);
+ for (i = 0; i < count; ++i) {
+ MonoIMTCheckItem *item = imt_entries [i];
+ printf ("method %d (%p) %s vtable slot %p is_equals %d chunk size %d\n", i, item->key, item->key->name, &vtable->vtable [item->value.vtable_slot], item->is_equals, item->chunk_size);
+ }
+#endif
+
+ buf_len = 0;
+ for (i = 0; i < count; ++i) {
+ MonoIMTCheckItem *item = imt_entries [i];
+ if (item->is_equals) {
+ gboolean fail_case = !item->check_target_idx && fail_tramp;
+
+ if (item->check_target_idx || fail_case) {
+ if (!item->compare_done || fail_case) {
+ buf_len += 4 * 4 + 4;
+ }
+ buf_len += 4;
+ if (item->has_target_code) {
+ buf_len += 5 * 4;
+ } else {
+ buf_len += 6 * 4;
+ }
+ if (fail_case) {
+ buf_len += 5 * 4;
+ }
+ } else {
+ buf_len += 6 * 4;
+ }
+ } else {
+ buf_len += 6 * 4;
+ }
+ }
+
+ if (fail_tramp)
+ buf = mono_method_alloc_generic_virtual_thunk (domain, buf_len);
+ else
+ buf = mono_domain_code_reserve (domain, buf_len);
+ code = buf;
+
+ /*
+ * We are called by JITted code, which passes in the IMT argument in
+ * MONO_ARCH_RGCTX_REG (r27). We need to preserve all caller saved regs
+ * except ip0/ip1.
+ */
+ imt_reg = MONO_ARCH_RGCTX_REG;
+ for (i = 0; i < count; ++i) {
+ MonoIMTCheckItem *item = imt_entries [i];
+
+ item->code_target = code;
+
+ if (item->is_equals) {
+ /*
+ * Check the imt argument against item->key, if equals, jump to either
+ * item->value.target_code or to vtable [item->value.vtable_slot].
+ * If fail_tramp is set, jump to it if not-equals.
+ */
+ gboolean fail_case = !item->check_target_idx && fail_tramp;
+
+ if (item->check_target_idx || fail_case) {
+ /* Compare imt_reg with item->key */
+ if (!item->compare_done || fail_case) {
+ // FIXME: Optimize this
+ code = emit_imm64 (code, ARMREG_IP0, (guint64)item->key);
+ arm_cmpx (code, imt_reg, ARMREG_IP0);
+ }
+ item->jmp_code = code;
+ arm_bcc (code, ARMCOND_NE, 0);
+ /* Jump to target if equals */
+ if (item->has_target_code) {
+ code = emit_imm64 (code, ARMREG_IP0, (guint64)item->value.target_code);
+ arm_brx (code, ARMREG_IP0);
+ } else {
+ guint64 imm = (guint64)&(vtable->vtable [item->value.vtable_slot]);
+
+ code = emit_imm64 (code, ARMREG_IP0, imm);
+ arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 0);
+ arm_brx (code, ARMREG_IP0);
+ }
+
+ if (fail_case) {
+ arm_patch_rel (item->jmp_code, code, MONO_R_ARM64_BCC);
+ item->jmp_code = NULL;
+ code = emit_imm64 (code, ARMREG_IP0, (guint64)fail_tramp);
+ arm_brx (code, ARMREG_IP0);
+ }
+ } else {
+ guint64 imm = (guint64)&(vtable->vtable [item->value.vtable_slot]);
+
+ code = emit_imm64 (code, ARMREG_IP0, imm);
+ arm_ldrx (code, ARMREG_IP0, ARMREG_IP0, 0);
+ arm_brx (code, ARMREG_IP0);
+ }
+ } else {
+ code = emit_imm64 (code, ARMREG_IP0, (guint64)item->key);
+ arm_cmpx (code, imt_reg, ARMREG_IP0);
+ item->jmp_code = code;
+ arm_bcc (code, ARMCOND_HS, 0);
+ }
+ }
+ /* Patch the branches */
+ for (i = 0; i < count; ++i) {
+ MonoIMTCheckItem *item = imt_entries [i];
+ if (item->jmp_code && item->check_target_idx)
+ arm_patch_rel (item->jmp_code, imt_entries [item->check_target_idx]->code_target, MONO_R_ARM64_BCC);
+ }
+
+ g_assert ((code - buf) < buf_len);
+
+ mono_arch_flush_icache (buf, code - buf);
+
+ return buf;
+}
+
+GSList *
+mono_arch_get_trampolines (gboolean aot)
+{
+ return mono_arm_get_exception_trampolines (aot);
+}
+
+#else /* DISABLE_JIT */
+
+gpointer
+mono_arch_build_imt_thunk (MonoVTable *vtable, MonoDomain *domain, MonoIMTCheckItem **imt_entries, int count,
+ gpointer fail_tramp)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+#endif /* !DISABLE_JIT */
+
+#ifdef MONO_ARCH_SOFT_DEBUG_SUPPORTED
+
+void
+mono_arch_set_breakpoint (MonoJitInfo *ji, guint8 *ip)
+{
+ guint8 *code = ip;
+ guint32 native_offset = ip - (guint8*)ji->code_start;
+
+ if (ji->from_aot) {
+ SeqPointInfo *info = mono_arch_get_seq_point_info (mono_domain_get (), ji->code_start);
+
+ g_assert (native_offset % 4 == 0);
+ g_assert (info->bp_addrs [native_offset / 4] == 0);
+ info->bp_addrs [native_offset / 4] = mini_get_breakpoint_trampoline ();
+ } else {
+ /* ip points to an ldrx */
+ code += 4;
+ arm_blrx (code, ARMREG_IP0);
+ mono_arch_flush_icache (ip, code - ip);
+ }
+}
+
+void
+mono_arch_clear_breakpoint (MonoJitInfo *ji, guint8 *ip)
+{
+ guint8 *code = ip;
+
+ if (ji->from_aot) {
+ guint32 native_offset = ip - (guint8*)ji->code_start;
+ SeqPointInfo *info = mono_arch_get_seq_point_info (mono_domain_get (), ji->code_start);
+
+ g_assert (native_offset % 4 == 0);
+ info->bp_addrs [native_offset / 4] = NULL;
+ } else {
+ /* ip points to an ldrx */
+ code += 4;
+ arm_nop (code);
+ mono_arch_flush_icache (ip, code - ip);
+ }
+}
+
+void
+mono_arch_start_single_stepping (void)
+{
+ ss_trampoline = mini_get_single_step_trampoline ();
+}
+
+void
+mono_arch_stop_single_stepping (void)
+{
+ ss_trampoline = NULL;
+}
+
+gboolean
+mono_arch_is_single_step_event (void *info, void *sigctx)
+{
+ /* We use soft breakpoints on arm64 */
+ return FALSE;
+}
+
+gboolean
+mono_arch_is_breakpoint_event (void *info, void *sigctx)
+{
+ /* We use soft breakpoints on arm64 */
+ return FALSE;
+}
+
+void
+mono_arch_skip_breakpoint (MonoContext *ctx, MonoJitInfo *ji)
+{
+ g_assert_not_reached ();
+}
+
+void
+mono_arch_skip_single_step (MonoContext *ctx)
+{
+ g_assert_not_reached ();
+}
+
+gpointer
+mono_arch_get_seq_point_info (MonoDomain *domain, guint8 *code)
+{
+ SeqPointInfo *info;
+ MonoJitInfo *ji;
+
+ // FIXME: Add a free function
+
+ mono_domain_lock (domain);
+ info = g_hash_table_lookup (domain_jit_info (domain)->arch_seq_points,
+ code);
+ mono_domain_unlock (domain);
+
+ if (!info) {
+ ji = mono_jit_info_table_find (domain, (char*)code);
+ g_assert (ji);
+
+ info = g_malloc0 (sizeof (SeqPointInfo) + (ji->code_size / 4) * sizeof(guint8*));
+
+ info->ss_tramp_addr = &ss_trampoline;
+
+ mono_domain_lock (domain);
+ g_hash_table_insert (domain_jit_info (domain)->arch_seq_points,
+ code, info);
+ mono_domain_unlock (domain);
+ }
+
+ return info;
+}
+
+void
+mono_arch_init_lmf_ext (MonoLMFExt *ext, gpointer prev_lmf)
+{
+ ext->lmf.previous_lmf = prev_lmf;
+ /* Mark that this is a MonoLMFExt */
+ ext->lmf.previous_lmf = (gpointer)(((gssize)ext->lmf.previous_lmf) | 2);
+ ext->lmf.gregs [MONO_ARCH_LMF_REG_SP] = (gssize)ext;
+}
+
+#endif /* MONO_ARCH_SOFT_DEBUG_SUPPORTED */
+
+gboolean
+mono_arch_opcode_supported (int opcode)
+{
+ switch (opcode) {
+ case OP_ATOMIC_ADD_I4:
+ case OP_ATOMIC_ADD_I8:
+ case OP_ATOMIC_EXCHANGE_I4:
+ case OP_ATOMIC_EXCHANGE_I8:
+ case OP_ATOMIC_CAS_I4:
+ case OP_ATOMIC_CAS_I8:
+ case OP_ATOMIC_LOAD_I1:
+ case OP_ATOMIC_LOAD_I2:
+ case OP_ATOMIC_LOAD_I4:
+ case OP_ATOMIC_LOAD_I8:
+ case OP_ATOMIC_LOAD_U1:
+ case OP_ATOMIC_LOAD_U2:
+ case OP_ATOMIC_LOAD_U4:
+ case OP_ATOMIC_LOAD_U8:
+ case OP_ATOMIC_LOAD_R4:
+ case OP_ATOMIC_LOAD_R8:
+ case OP_ATOMIC_STORE_I1:
+ case OP_ATOMIC_STORE_I2:
+ case OP_ATOMIC_STORE_I4:
+ case OP_ATOMIC_STORE_I8:
+ case OP_ATOMIC_STORE_U1:
+ case OP_ATOMIC_STORE_U2:
+ case OP_ATOMIC_STORE_U4:
+ case OP_ATOMIC_STORE_U8:
+ case OP_ATOMIC_STORE_R4:
+ case OP_ATOMIC_STORE_R8:
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+CallInfo*
+mono_arch_get_call_info (MonoMemPool *mp, MonoMethodSignature *sig)
+{
+ return get_call_info (mp, sig);
+}
+
projects / mono.git / blobdiff