-#include "../../../mono-extensions/mono/mini/exceptions-arm64.c"
+/**
+ * \file
+ * exception support for ARM64
+ *
+ * Copyright 2013 Xamarin Inc
+ *
+ * Based on exceptions-arm.c:
+ *
+ * Authors:
+ * Dietmar Maurer (dietmar@ximian.com)
+ * Paolo Molaro (lupus@ximian.com)
+ *
+ * (C) 2001 Ximian, Inc.
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
+ */
+
+#include "mini.h"
+
+#include <mono/arch/arm64/arm64-codegen.h>
+#include <mono/metadata/abi-details.h>
+
+#define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
+
+#ifndef DISABLE_JIT
+
+gpointer
+mono_arch_get_restore_context (MonoTrampInfo **info, gboolean aot)
+{
+ guint8 *start, *code;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
+ int i, ctx_reg, size;
+ guint8 *labels [16];
+
+ size = 256;
+ code = start = mono_global_codeman_reserve (size);
+
+ arm_movx (code, ARMREG_IP0, ARMREG_R0);
+ ctx_reg = ARMREG_IP0;
+
+ /* Restore fregs */
+ arm_ldrx (code, ARMREG_IP1, ctx_reg, MONO_STRUCT_OFFSET (MonoContext, has_fregs));
+ labels [0] = code;
+ arm_cbzx (code, ARMREG_IP1, 0);
+ for (i = 0; i < 32; ++i)
+ arm_ldrfpx (code, i, ctx_reg, MONO_STRUCT_OFFSET (MonoContext, fregs) + (i * sizeof (MonoContextSimdReg)));
+ mono_arm_patch (labels [0], code, MONO_R_ARM64_CBZ);
+ /* Restore gregs */
+ // FIXME: Restore less registers
+ // FIXME: fp should be restored later
+ code = mono_arm_emit_load_regarray (code, 0xffffffff & ~(1 << ctx_reg) & ~(1 << ARMREG_SP), ctx_reg, MONO_STRUCT_OFFSET (MonoContext, regs));
+ /* ip0/ip1 doesn't need to be restored */
+ /* ip1 = pc */
+ arm_ldrx (code, ARMREG_IP1, ctx_reg, MONO_STRUCT_OFFSET (MonoContext, pc));
+ /* ip0 = sp */
+ arm_ldrx (code, ARMREG_IP0, ctx_reg, MONO_STRUCT_OFFSET (MonoContext, regs) + (ARMREG_SP * 8));
+ /* Restore sp, ctx is no longer valid */
+ arm_movspx (code, ARMREG_SP, ARMREG_IP0);
+ /* Branch to pc */
+ arm_brx (code, ARMREG_IP1);
+ /* Not reached */
+ arm_brk (code, 0);
+
+ g_assert ((code - start) < size);
+ mono_arch_flush_icache (start, code - start);
+ MONO_PROFILER_RAISE (jit_code_buffer, (start, code - start, MONO_PROFILER_CODE_BUFFER_EXCEPTION_HANDLING, NULL));
+
+ if (info)
+ *info = mono_tramp_info_create ("restore_context", start, code - start, ji, unwind_ops);
+
+ return start;
+}
+
+gpointer
+mono_arch_get_call_filter (MonoTrampInfo **info, gboolean aot)
+{
+ guint8 *code;
+ guint8* start;
+ int i, size, offset, gregs_offset, fregs_offset, ctx_offset, num_fregs, frame_size;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
+ guint8 *labels [16];
+
+ size = 512;
+ start = code = mono_global_codeman_reserve (size);
+
+ /* Compute stack frame size and offsets */
+ offset = 0;
+ /* frame block */
+ offset += 2 * 8;
+ /* gregs */
+ gregs_offset = offset;
+ offset += 32 * 8;
+ /* fregs */
+ num_fregs = 8;
+ fregs_offset = offset;
+ offset += num_fregs * 8;
+ ctx_offset = offset;
+ ctx_offset += 8;
+ frame_size = ALIGN_TO (offset, MONO_ARCH_FRAME_ALIGNMENT);
+
+ /*
+ * We are being called from C code, ctx is in r0, the address to call is in r1.
+ * We need to save state, restore ctx, make the call, then restore the previous state,
+ * returning the value returned by the call.
+ */
+
+ /* Setup a frame */
+ arm_stpx_pre (code, ARMREG_FP, ARMREG_LR, ARMREG_SP, -frame_size);
+ arm_movspx (code, ARMREG_FP, ARMREG_SP);
+
+ /* Save ctx */
+ arm_strx (code, ARMREG_R0, ARMREG_FP, ctx_offset);
+ /* Save gregs */
+ code = mono_arm_emit_store_regarray (code, MONO_ARCH_CALLEE_SAVED_REGS | (1 << ARMREG_FP), ARMREG_FP, gregs_offset);
+ /* Save fregs */
+ for (i = 0; i < num_fregs; ++i)
+ arm_strfpx (code, ARMREG_D8 + i, ARMREG_FP, fregs_offset + (i * 8));
+
+ /* Load regs from ctx */
+ code = mono_arm_emit_load_regarray (code, MONO_ARCH_CALLEE_SAVED_REGS, ARMREG_R0, MONO_STRUCT_OFFSET (MonoContext, regs));
+ /* Load fregs */
+ arm_ldrx (code, ARMREG_IP0, ARMREG_R0, MONO_STRUCT_OFFSET (MonoContext, has_fregs));
+ labels [0] = code;
+ arm_cbzx (code, ARMREG_IP0, 0);
+ for (i = 0; i < num_fregs; ++i)
+ arm_ldrfpx (code, ARMREG_D8 + i, ARMREG_R0, MONO_STRUCT_OFFSET (MonoContext, fregs) + ((i + 8) * sizeof (MonoContextSimdReg)));
+ mono_arm_patch (labels [0], code, MONO_R_ARM64_CBZ);
+ /* Load fp */
+ arm_ldrx (code, ARMREG_FP, ARMREG_R0, MONO_STRUCT_OFFSET (MonoContext, regs) + (ARMREG_FP * 8));
+
+ /* Make the call */
+ arm_blrx (code, ARMREG_R1);
+ /* For filters, the result is in R0 */
+
+ /* Restore fp */
+ arm_ldrx (code, ARMREG_FP, ARMREG_SP, gregs_offset + (ARMREG_FP * 8));
+ /* Load ctx */
+ arm_ldrx (code, ARMREG_IP0, ARMREG_FP, ctx_offset);
+ /* Save registers back to ctx */
+ /* This isn't strictly neccessary since we don't allocate variables used in eh clauses to registers */
+ code = mono_arm_emit_store_regarray (code, MONO_ARCH_CALLEE_SAVED_REGS, ARMREG_IP0, MONO_STRUCT_OFFSET (MonoContext, regs));
+
+ /* Restore regs */
+ code = mono_arm_emit_load_regarray (code, MONO_ARCH_CALLEE_SAVED_REGS, ARMREG_FP, gregs_offset);
+ /* Restore fregs */
+ for (i = 0; i < num_fregs; ++i)
+ arm_ldrfpx (code, ARMREG_D8 + i, ARMREG_FP, fregs_offset + (i * 8));
+ /* Destroy frame */
+ code = mono_arm_emit_destroy_frame (code, frame_size, (1 << ARMREG_IP0));
+ arm_retx (code, ARMREG_LR);
+
+ g_assert ((code - start) < size);
+ mono_arch_flush_icache (start, code - start);
+ MONO_PROFILER_RAISE (jit_code_buffer, (start, code - start, MONO_PROFILER_CODE_BUFFER_EXCEPTION_HANDLING, NULL));
+
+ if (info)
+ *info = mono_tramp_info_create ("call_filter", start, code - start, ji, unwind_ops);
+
+ return start;
+}
+
+static gpointer
+get_throw_trampoline (int size, gboolean corlib, gboolean rethrow, gboolean llvm, gboolean resume_unwind, const char *tramp_name, MonoTrampInfo **info, gboolean aot)
+{
+ guint8 *start, *code;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
+ int i, offset, gregs_offset, fregs_offset, frame_size, num_fregs;
+
+ code = start = mono_global_codeman_reserve (size);
+
+ /* We are being called by JITted code, the exception object/type token is in R0 */
+
+ /* Compute stack frame size and offsets */
+ offset = 0;
+ /* frame block */
+ offset += 2 * 8;
+ /* gregs */
+ gregs_offset = offset;
+ offset += 32 * 8;
+ /* fregs */
+ num_fregs = 8;
+ fregs_offset = offset;
+ offset += num_fregs * 8;
+ frame_size = ALIGN_TO (offset, MONO_ARCH_FRAME_ALIGNMENT);
+
+ /* Setup a frame */
+ arm_stpx_pre (code, ARMREG_FP, ARMREG_LR, ARMREG_SP, -frame_size);
+ arm_movspx (code, ARMREG_FP, ARMREG_SP);
+
+ /* Save gregs */
+ code = mono_arm_emit_store_regarray (code, 0xffffffff, ARMREG_FP, gregs_offset);
+ if (corlib && !llvm)
+ /* The real LR is in R1 */
+ arm_strx (code, ARMREG_R1, ARMREG_FP, gregs_offset + (ARMREG_LR * 8));
+ /* Save fp/sp */
+ arm_ldrx (code, ARMREG_IP0, ARMREG_FP, 0);
+ arm_strx (code, ARMREG_IP0, ARMREG_FP, gregs_offset + (ARMREG_FP * 8));
+ arm_addx_imm (code, ARMREG_IP0, ARMREG_FP, frame_size);
+ arm_strx (code, ARMREG_IP0, ARMREG_FP, gregs_offset + (ARMREG_SP * 8));
+ /* Save fregs */
+ for (i = 0; i < num_fregs; ++i)
+ arm_strfpx (code, ARMREG_D8 + i, ARMREG_FP, fregs_offset + (i * 8));
+
+ /* Call the C trampoline function */
+ /* Arg1 = exception object/type token */
+ arm_movx (code, ARMREG_R0, ARMREG_R0);
+ /* Arg2 = caller ip */
+ if (corlib) {
+ if (llvm)
+ arm_ldrx (code, ARMREG_R1, ARMREG_FP, gregs_offset + (ARMREG_LR * 8));
+ else
+ arm_movx (code, ARMREG_R1, ARMREG_R1);
+ } else {
+ arm_ldrx (code, ARMREG_R1, ARMREG_FP, 8);
+ }
+ /* Arg 3 = gregs */
+ arm_addx_imm (code, ARMREG_R2, ARMREG_FP, gregs_offset);
+ /* Arg 4 = fregs */
+ arm_addx_imm (code, ARMREG_R3, ARMREG_FP, fregs_offset);
+ /* Arg 5 = corlib */
+ arm_movzx (code, ARMREG_R4, corlib ? 1 : 0, 0);
+ /* Arg 6 = rethrow */
+ arm_movzx (code, ARMREG_R5, rethrow ? 1 : 0, 0);
+ /* Call the function */
+ if (aot) {
+ const char *icall_name;
+
+ if (resume_unwind)
+ icall_name = "mono_arm_resume_unwind";
+ else
+ icall_name = "mono_arm_throw_exception";
+
+ code = mono_arm_emit_aotconst (&ji, code, start, ARMREG_LR, MONO_PATCH_INFO_JIT_ICALL_ADDR, icall_name);
+ } else {
+ gpointer icall_func;
+
+ if (resume_unwind)
+ icall_func = mono_arm_resume_unwind;
+ else
+ icall_func = mono_arm_throw_exception;
+
+ code = mono_arm_emit_imm64 (code, ARMREG_LR, (guint64)icall_func);
+ }
+ arm_blrx (code, ARMREG_LR);
+ /* This shouldn't return */
+ arm_brk (code, 0x0);
+
+ g_assert ((code - start) < size);
+ mono_arch_flush_icache (start, code - start);
+ MONO_PROFILER_RAISE (jit_code_buffer, (start, code - start, MONO_PROFILER_CODE_BUFFER_EXCEPTION_HANDLING, NULL));
+
+ if (info)
+ *info = mono_tramp_info_create (tramp_name, start, code - start, ji, unwind_ops);
+
+ return start;
+}
+
+gpointer
+mono_arch_get_throw_exception (MonoTrampInfo **info, gboolean aot)
+{
+ return get_throw_trampoline (256, FALSE, FALSE, FALSE, FALSE, "throw_exception", info, aot);
+}
+
+gpointer
+mono_arch_get_rethrow_exception (MonoTrampInfo **info, gboolean aot)
+{
+ return get_throw_trampoline (256, FALSE, TRUE, FALSE, FALSE, "rethrow_exception", info, aot);
+}
+
+gpointer
+mono_arch_get_throw_corlib_exception (MonoTrampInfo **info, gboolean aot)
+{
+ return get_throw_trampoline (256, TRUE, FALSE, FALSE, FALSE, "throw_corlib_exception", info, aot);
+}
+
+GSList*
+mono_arm_get_exception_trampolines (gboolean aot)
+{
+ MonoTrampInfo *info;
+ GSList *tramps = NULL;
+
+ /* LLVM uses the normal trampolines, but with a different name */
+ get_throw_trampoline (256, TRUE, FALSE, FALSE, FALSE, "llvm_throw_corlib_exception_trampoline", &info, aot);
+ tramps = g_slist_prepend (tramps, info);
+
+ get_throw_trampoline (256, TRUE, FALSE, TRUE, FALSE, "llvm_throw_corlib_exception_abs_trampoline", &info, aot);
+ tramps = g_slist_prepend (tramps, info);
+
+ get_throw_trampoline (256, FALSE, FALSE, FALSE, TRUE, "llvm_resume_unwind_trampoline", &info, aot);
+ tramps = g_slist_prepend (tramps, info);
+
+ return tramps;
+}
+
+#else /* DISABLE_JIT */
+
+gpointer
+mono_arch_get_restore_context (MonoTrampInfo **info, gboolean aot)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+gpointer
+mono_arch_get_call_filter (MonoTrampInfo **info, gboolean aot)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+gpointer
+mono_arch_get_throw_exception (MonoTrampInfo **info, gboolean aot)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+gpointer
+mono_arch_get_rethrow_exception (MonoTrampInfo **info, gboolean aot)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+gpointer
+mono_arch_get_throw_corlib_exception (MonoTrampInfo **info, gboolean aot)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+GSList*
+mono_arm_get_exception_trampolines (gboolean aot)
+{
+ g_assert_not_reached ();
+ return NULL;
+}
+
+#endif /* !DISABLE_JIT */
+
+void
+mono_arch_exceptions_init (void)
+{
+ guint8 *tramp;
+ GSList *tramps, *l;
+
+ if (mono_aot_only) {
+ tramp = mono_aot_get_trampoline ("llvm_throw_corlib_exception_trampoline");
+ mono_register_jit_icall (tramp, "llvm_throw_corlib_exception_trampoline", NULL, TRUE);
+ tramp = mono_aot_get_trampoline ("llvm_throw_corlib_exception_abs_trampoline");
+ mono_register_jit_icall (tramp, "llvm_throw_corlib_exception_abs_trampoline", NULL, TRUE);
+ tramp = mono_aot_get_trampoline ("llvm_resume_unwind_trampoline");
+ mono_register_jit_icall (tramp, "llvm_resume_unwind_trampoline", NULL, TRUE);
+ } else {
+ tramps = mono_arm_get_exception_trampolines (FALSE);
+ for (l = tramps; l; l = l->next) {
+ MonoTrampInfo *info = l->data;
+
+ mono_register_jit_icall (info->code, g_strdup (info->name), NULL, TRUE);
+ mono_tramp_info_register (info, NULL);
+ }
+ g_slist_free (tramps);
+ }
+}
+
+/*
+ * mono_arm_throw_exception:
+ *
+ * This function is called by the exception trampolines.
+ * FP_REGS points to the 8 callee saved fp regs.
+ */
+void
+mono_arm_throw_exception (gpointer arg, mgreg_t pc, mgreg_t *int_regs, gdouble *fp_regs, gboolean corlib, gboolean rethrow)
+{
+ MonoError error;
+ MonoContext ctx;
+ MonoObject *exc = NULL;
+ guint32 ex_token_index, ex_token;
+
+ if (!corlib)
+ exc = arg;
+ else {
+ ex_token_index = (guint64)arg;
+ ex_token = MONO_TOKEN_TYPE_DEF | ex_token_index;
+ exc = (MonoObject*)mono_exception_from_token (mono_defaults.corlib, ex_token);
+ }
+
+ /* Adjust pc so it points into the call instruction */
+ pc -= 4;
+
+ /* Initialize a ctx based on the arguments */
+ memset (&ctx, 0, sizeof (MonoContext));
+ memcpy (&(ctx.regs [0]), int_regs, sizeof (mgreg_t) * 32);
+ for (int i = 0; i < 8; i++)
+ *((gdouble*)&ctx.fregs [ARMREG_D8 + i]) = fp_regs [i];
+ ctx.has_fregs = 1;
+ ctx.pc = pc;
+
+ if (mono_object_isinst_checked (exc, mono_defaults.exception_class, &error)) {
+ MonoException *mono_ex = (MonoException*)exc;
+ if (!rethrow) {
+ mono_ex->stack_trace = NULL;
+ mono_ex->trace_ips = NULL;
+ }
+ }
+ mono_error_assert_ok (&error);
+
+ mono_handle_exception (&ctx, exc);
+
+ mono_restore_context (&ctx);
+}
+
+void
+mono_arm_resume_unwind (gpointer arg, mgreg_t pc, mgreg_t *int_regs, gdouble *fp_regs, gboolean corlib, gboolean rethrow)
+{
+ MonoContext ctx;
+
+ /* Adjust pc so it points into the call instruction */
+ pc -= 4;
+
+ /* Initialize a ctx based on the arguments */
+ memset (&ctx, 0, sizeof (MonoContext));
+ memcpy (&(ctx.regs [0]), int_regs, sizeof (mgreg_t) * 32);
+ for (int i = 0; i < 8; i++)
+ *((gdouble*)&ctx.fregs [ARMREG_D8 + i]) = fp_regs [i];
+ ctx.has_fregs = 1;
+ ctx.pc = pc;
+
+ mono_resume_unwind (&ctx);
+}
+
+/*
+ * mono_arch_unwind_frame:
+ *
+ * See exceptions-amd64.c for docs;
+ */
+gboolean
+mono_arch_unwind_frame (MonoDomain *domain, MonoJitTlsData *jit_tls,
+ MonoJitInfo *ji, MonoContext *ctx,
+ MonoContext *new_ctx, MonoLMF **lmf,
+ mgreg_t **save_locations,
+ StackFrameInfo *frame)
+{
+ gpointer ip = MONO_CONTEXT_GET_IP (ctx);
+
+ memset (frame, 0, sizeof (StackFrameInfo));
+ frame->ji = ji;
+
+ *new_ctx = *ctx;
+
+ if (ji != NULL) {
+ mgreg_t regs [MONO_MAX_IREGS + 8 + 1];
+ guint8 *cfa;
+ guint32 unwind_info_len;
+ guint8 *unwind_info;
+
+ frame->type = FRAME_TYPE_MANAGED;
+
+ unwind_info = mono_jinfo_get_unwind_info (ji, &unwind_info_len);
+
+ memcpy (regs, &new_ctx->regs, sizeof (mgreg_t) * 32);
+ /* v8..v15 are callee saved */
+ for (int i = 0; i < 8; i++)
+ (regs + MONO_MAX_IREGS) [i] = *((mgreg_t*)&new_ctx->fregs [8 + i]);
+
+ mono_unwind_frame (unwind_info, unwind_info_len, ji->code_start,
+ (guint8*)ji->code_start + ji->code_size,
+ ip, NULL, regs, MONO_MAX_IREGS + 8,
+ save_locations, MONO_MAX_IREGS, &cfa);
+
+ memcpy (&new_ctx->regs, regs, sizeof (mgreg_t) * 32);
+ for (int i = 0; i < 8; i++)
+ *((mgreg_t*)&new_ctx->fregs [8 + i]) = (regs + MONO_MAX_IREGS) [i];
+
+ new_ctx->pc = regs [ARMREG_LR];
+ new_ctx->regs [ARMREG_SP] = (mgreg_t)cfa;
+
+ if (*lmf && (*lmf)->gregs [MONO_ARCH_LMF_REG_SP] && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->gregs [MONO_ARCH_LMF_REG_SP])) {
+ /* remove any unused lmf */
+ *lmf = (gpointer)(((gsize)(*lmf)->previous_lmf) & ~3);
+ }
+
+ /* we substract 1, so that the IP points into the call instruction */
+ new_ctx->pc--;
+
+ return TRUE;
+ } else if (*lmf) {
+ if (((gsize)(*lmf)->previous_lmf) & 2) {
+ MonoLMFExt *ext = (MonoLMFExt*)(*lmf);
+
+ if (ext->debugger_invoke) {
+ /*
+ * This LMF entry is created by the soft debug code to mark transitions to
+ * managed code done during invokes.
+ */
+ frame->type = FRAME_TYPE_DEBUGGER_INVOKE;
+ memcpy (new_ctx, &ext->ctx, sizeof (MonoContext));
+ } else if (ext->interp_exit) {
+ frame->type = FRAME_TYPE_INTERP_TO_MANAGED;
+ frame->interp_exit_data = ext->interp_exit_data;
+ } else {
+ g_assert_not_reached ();
+ }
+
+ *lmf = (gpointer)(((gsize)(*lmf)->previous_lmf) & ~3);
+
+ return TRUE;
+ }
+
+ frame->type = FRAME_TYPE_MANAGED_TO_NATIVE;
+
+ ji = mini_jit_info_table_find (domain, (gpointer)(*lmf)->pc, NULL);
+ if (!ji)
+ return FALSE;
+
+ g_assert (MONO_ARCH_LMF_REGS == ((0x3ff << 19) | (1 << ARMREG_FP) | (1 << ARMREG_SP)));
+ memcpy (&new_ctx->regs [ARMREG_R19], &(*lmf)->gregs [0], sizeof (mgreg_t) * 10);
+ new_ctx->regs [ARMREG_FP] = (*lmf)->gregs [MONO_ARCH_LMF_REG_FP];
+ new_ctx->regs [ARMREG_SP] = (*lmf)->gregs [MONO_ARCH_LMF_REG_SP];
+ new_ctx->pc = (*lmf)->pc;
+
+ /* we substract 1, so that the IP points into the call instruction */
+ new_ctx->pc--;
+
+ *lmf = (gpointer)(((gsize)(*lmf)->previous_lmf) & ~3);
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/*
+ * handle_exception:
+ *
+ * Called by resuming from a signal handler.
+ */
+static void
+handle_signal_exception (gpointer obj)
+{
+ MonoJitTlsData *jit_tls = mono_tls_get_jit_tls ();
+ MonoContext ctx;
+
+ memcpy (&ctx, &jit_tls->ex_ctx, sizeof (MonoContext));
+
+ mono_handle_exception (&ctx, obj);
+
+ mono_restore_context (&ctx);
+}
+
+/*
+ * This is the function called from the signal handler
+ */
+gboolean
+mono_arch_handle_exception (void *ctx, gpointer obj)
+{
+#if defined(MONO_CROSS_COMPILE)
+ g_assert_not_reached ();
+#else
+ MonoJitTlsData *jit_tls;
+ void *sigctx = ctx;
+
+ /*
+ * Resume into the normal stack and handle the exception there.
+ */
+ jit_tls = mono_tls_get_jit_tls ();
+
+ /* Pass the ctx parameter in TLS */
+ mono_sigctx_to_monoctx (sigctx, &jit_tls->ex_ctx);
+ /* The others in registers */
+ UCONTEXT_REG_R0 (sigctx) = (gsize)obj;
+
+ UCONTEXT_REG_PC (sigctx) = (gsize)handle_signal_exception;
+ UCONTEXT_REG_SP (sigctx) = UCONTEXT_REG_SP (sigctx) - MONO_ARCH_REDZONE_SIZE;
+#endif
+
+ return TRUE;
+}
+
+gpointer
+mono_arch_ip_from_context (void *sigctx)
+{
+#ifdef MONO_CROSS_COMPILE
+ g_assert_not_reached ();
+ return NULL;
+#else
+ return (gpointer)UCONTEXT_REG_PC (sigctx);
+#endif
+}
+
+void
+mono_arch_setup_async_callback (MonoContext *ctx, void (*async_cb)(void *fun), gpointer user_data)
+{
+ mgreg_t sp = (mgreg_t)MONO_CONTEXT_GET_SP (ctx);
+
+ // FIXME:
+ g_assert (!user_data);
+
+ /* Allocate a stack frame */
+ sp -= 32;
+ MONO_CONTEXT_SET_SP (ctx, sp);
+
+ mono_arch_setup_resume_sighandler_ctx (ctx, async_cb);
+}
+
+/*
+ * mono_arch_setup_resume_sighandler_ctx:
+ *
+ * Setup CTX so execution continues at FUNC.
+ */
+void
+mono_arch_setup_resume_sighandler_ctx (MonoContext *ctx, gpointer func)
+{
+ MONO_CONTEXT_SET_IP (ctx,func);
+}
projects / mono.git / blobdiff