#include "mini.h"
#include "mini-arm.h"
+#include "debugger-agent.h"
#define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
*(guint8**)jump_entry = addr;
}
-void
-mono_arch_nullify_class_init_trampoline (guint8 *code, mgreg_t *regs)
-{
- mono_arch_patch_callsite (NULL, code, mini_get_nullified_class_init_trampoline ());
-}
-
#ifndef DISABLE_JIT
#define arm_is_imm12(v) ((int)(v) > -4096 && (int)(v) < 4096)
/* Stack size for trampoline function
*/
-#define STACK ALIGN_TO (sizeof (MonoLMF), 8)
+#define STACK ALIGN_TO (sizeof (MonoLMF), MONO_ARCH_FRAME_ALIGNMENT)
/* Method-specific trampoline code fragment size */
#define METHOD_TRAMPOLINE_SIZE 64
/* The offset where lr was saved inside the regsave area */
lr_offset = 13 * sizeof (mgreg_t);
- // FIXME: Finish the unwind info, the current info allows us to unwind
- // when the trampoline is not in the epilog
-
// CFA = SP + (num registers pushed) * 4
cfa_offset = 14 * sizeof (mgreg_t);
mono_add_unwind_op_def_cfa (unwind_ops, code, buf, ARMREG_SP, cfa_offset);
// PC saved at sp+LR_OFFSET
mono_add_unwind_op_offset (unwind_ops, code, buf, ARMREG_LR, -4);
- if (aot && tramp_type != MONO_TRAMPOLINE_GENERIC_CLASS_INIT) {
+ if (aot) {
/*
* For page trampolines the data is in r1, so just move it, otherwise use the got slot as below.
* The trampoline contains a pc-relative offset to the got slot
* preceeding the got slot where the value is stored. The offset can be
* found at [lr + 0].
*/
+ /* See if emit_trampolines () in aot-compiler.c for the '2' */
if (aot == 2) {
ARM_MOV_REG_REG (code, ARMREG_V2, ARMREG_R1);
} else {
ARM_LDR_REG_REG (code, ARMREG_V2, ARMREG_V2, ARMREG_LR);
}
} else {
- if (tramp_type != MONO_TRAMPOLINE_GENERIC_CLASS_INIT) {
- ARM_LDR_IMM (code, ARMREG_V2, ARMREG_LR, 0);
- }
- else
- ARM_MOV_REG_REG (code, ARMREG_V2, MONO_ARCH_VTABLE_REG);
+ ARM_LDR_IMM (code, ARMREG_V2, ARMREG_LR, 0);
}
ARM_LDR_IMM (code, ARMREG_V3, ARMREG_SP, lr_offset);
+ /* we build the MonoLMF structure on the stack - see mini-arm.h
+ * The pointer to the struct is put in r1.
+ * the iregs array is already allocated on the stack by push.
+ */
+ code = mono_arm_emit_load_imm (code, ARMREG_R2, STACK - regsave_size);
+ ARM_SUB_REG_REG (code, ARMREG_SP, ARMREG_SP, ARMREG_R2);
+ cfa_offset += STACK - regsave_size;
+ mono_add_unwind_op_def_cfa_offset (unwind_ops, code, buf, cfa_offset);
+ /* V1 == lmf */
+ code = mono_arm_emit_load_imm (code, ARMREG_R2, STACK - sizeof (MonoLMF));
+ ARM_ADD_REG_REG (code, ARMREG_V1, ARMREG_SP, ARMREG_R2);
+
/* ok, now we can continue with the MonoLMF setup, mostly untouched
* from emit_prolog in mini-arm.c
* This is a synthetized call to mono_get_lmf_addr ()
ARM_MOV_REG_REG (code, ARMREG_LR, ARMREG_PC);
code = emit_bx (code, ARMREG_R0);
- /* we build the MonoLMF structure on the stack - see mini-arm.h
- * The pointer to the struct is put in r1.
- * the iregs array is already allocated on the stack by push.
- */
- code = mono_arm_emit_load_imm (code, ARMREG_R2, STACK - regsave_size);
- ARM_SUB_REG_REG (code, ARMREG_SP, ARMREG_SP, ARMREG_R2);
- cfa_offset += STACK - regsave_size;
- mono_add_unwind_op_def_cfa_offset (unwind_ops, code, buf, cfa_offset);
- /* V1 == lmf */
- code = mono_arm_emit_load_imm (code, ARMREG_R2, STACK - sizeof (MonoLMF));
- ARM_ADD_REG_REG (code, ARMREG_V1, ARMREG_SP, ARMREG_R2);
-
/*
* The stack now looks like:
* <saved regs>
* Note that IP has been conveniently set to the method addr.
*/
ARM_ADD_REG_IMM8 (code, ARMREG_SP, ARMREG_SP, STACK - regsave_size);
+ cfa_offset -= STACK - regsave_size;
+ mono_add_unwind_op_def_cfa_offset (unwind_ops, code, buf, cfa_offset);
ARM_POP_NWB (code, 0x5fff);
+ mono_add_unwind_op_same_value (unwind_ops, code, buf, ARMREG_LR);
if (tramp_type == MONO_TRAMPOLINE_RGCTX_LAZY_FETCH)
ARM_MOV_REG_REG (code, ARMREG_R0, ARMREG_IP);
ARM_ADD_REG_IMM8 (code, ARMREG_SP, ARMREG_SP, regsave_size);
- if ((tramp_type == MONO_TRAMPOLINE_CLASS_INIT) || (tramp_type == MONO_TRAMPOLINE_GENERIC_CLASS_INIT) || (tramp_type == MONO_TRAMPOLINE_RGCTX_LAZY_FETCH))
+ cfa_offset -= regsave_size;
+ g_assert (cfa_offset == 0);
+ mono_add_unwind_op_def_cfa_offset (unwind_ops, code, buf, cfa_offset);
+ if (MONO_TRAMPOLINE_TYPE_MUST_RETURN (tramp_type))
code = emit_bx (code, ARMREG_LR);
else
code = emit_bx (code, ARMREG_IP);
/* Sanity check */
g_assert ((code - buf) <= buf_len);
- if (info) {
- tramp_name = mono_get_generic_trampoline_name (tramp_type);
- *info = mono_tramp_info_create (tramp_name, buf, code - buf, ji, unwind_ops);
- g_free (tramp_name);
- }
-
- return buf;
-}
-
-gpointer
-mono_arch_get_nullified_class_init_trampoline (MonoTrampInfo **info)
-{
- guint8 *buf, *code;
-
- code = buf = mono_global_codeman_reserve (16);
-
- code = emit_bx (code, ARMREG_LR);
-
- mono_arch_flush_icache (buf, code - buf);
- mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_HELPER, NULL);
-
- if (info)
- *info = mono_tramp_info_create ("nullified_class_init_trampoline", buf, code - buf, NULL, NULL);
+ g_assert (info);
+ tramp_name = mono_get_generic_trampoline_name (tramp_type);
+ *info = mono_tramp_info_create (tramp_name, buf, code - buf, ji, unwind_ops);
+ g_free (tramp_name);
return buf;
}
{
guint8 *code, *start;
MonoDomain *domain = mono_domain_get ();
+ GSList *unwind_ops;
#ifdef USE_JUMP_TABLES
gpointer *jte;
guint32 size = 20;
start = code = mono_domain_code_reserve (domain, size);
+ unwind_ops = mono_arch_get_cie_program ();
+
#ifdef USE_JUMP_TABLES
jte = mono_jumptable_add_entry ();
code = mono_arm_load_jumptable_entry (code, jte, ARMREG_IP);
/*g_print ("unbox trampoline at %d for %s:%s\n", this_pos, m->klass->name, m->name);
g_print ("unbox code is at %p for method at %p\n", start, addr);*/
+ mono_tramp_info_register (mono_tramp_info_create (NULL, start, code - start, NULL, unwind_ops), domain);
+
return start;
}
mono_arch_get_static_rgctx_trampoline (MonoMethod *m, MonoMethodRuntimeGenericContext *mrgctx, gpointer addr)
{
guint8 *code, *start;
+ GSList *unwind_ops;
#ifdef USE_JUMP_TABLES
int buf_len = 20;
gpointer *jte;
start = code = mono_domain_code_reserve (domain, buf_len);
+ unwind_ops = mono_arch_get_cie_program ();
+
#ifdef USE_JUMP_TABLES
jte = mono_jumptable_add_entries (2);
code = mono_arm_load_jumptable_entry_addr (code, jte, ARMREG_IP);
mono_arch_flush_icache (start, code - start);
mono_profiler_code_buffer_new (start, code - start, MONO_PROFILER_CODE_BUFFER_GENERICS_TRAMPOLINE, NULL);
+ mono_tramp_info_register (mono_tramp_info_create (NULL, start, code - start, NULL, unwind_ops), domain);
+
return start;
}
code = buf = mono_global_codeman_reserve (tramp_size);
- mono_add_unwind_op_def_cfa (unwind_ops, code, buf, ARMREG_SP, 0);
+ unwind_ops = mono_arch_get_cie_program ();
rgctx_null_jumps = g_malloc (sizeof (guint8*) * (depth + 2));
njumps = 0;
g_assert (code - buf <= tramp_size);
- if (info) {
- char *name = mono_get_rgctx_fetch_trampoline_name (slot);
- *info = mono_tramp_info_create (name, buf, code - buf, ji, unwind_ops);
- g_free (name);
- }
+ char *name = mono_get_rgctx_fetch_trampoline_name (slot);
+ *info = mono_tramp_info_create (name, buf, code - buf, ji, unwind_ops);
+ g_free (name);
return buf;
}
code = buf = mono_global_codeman_reserve (tramp_size);
- mono_add_unwind_op_def_cfa (unwind_ops, code, buf, ARMREG_SP, 0);
+ unwind_ops = mono_arch_get_cie_program ();
// FIXME: Currently, we always go to the slow path.
/* Load trampoline addr */
g_assert (code - buf <= tramp_size);
- if (info)
- *info = mono_tramp_info_create ("rgctx_fetch_trampoline_general", buf, code - buf, ji, unwind_ops);
-
- return buf;
-}
-
-#define arm_is_imm8(v) ((v) > -256 && (v) < 256)
-
-gpointer
-mono_arch_create_generic_class_init_trampoline (MonoTrampInfo **info, gboolean aot)
-{
- guint8 *tramp;
- guint8 *code, *buf;
- static int byte_offset = -1;
- static guint8 bitmask;
- guint8 *jump;
- int tramp_size;
- guint32 code_len, imm8;
- gint rot_amount;
- GSList *unwind_ops = NULL;
- MonoJumpInfo *ji = NULL;
-
- tramp_size = 64;
-
- code = buf = mono_global_codeman_reserve (tramp_size);
-
- if (byte_offset < 0)
- mono_marshal_find_bitfield_offset (MonoVTable, initialized, &byte_offset, &bitmask);
-
- g_assert (arm_is_imm8 (byte_offset));
- ARM_LDRSB_IMM (code, ARMREG_IP, MONO_ARCH_VTABLE_REG, byte_offset);
- imm8 = mono_arm_is_rotated_imm8 (bitmask, &rot_amount);
- g_assert (imm8 >= 0);
- ARM_AND_REG_IMM (code, ARMREG_IP, ARMREG_IP, imm8, rot_amount);
- ARM_CMP_REG_IMM (code, ARMREG_IP, 0, 0);
- jump = code;
- ARM_B_COND (code, ARMCOND_EQ, 0);
-
- /* Initialized case */
- ARM_MOV_REG_REG (code, ARMREG_PC, ARMREG_LR);
-
- /* Uninitialized case */
- arm_patch (jump, code);
-
- if (aot) {
- ji = mono_patch_info_list_prepend (ji, code - buf, MONO_PATCH_INFO_JIT_ICALL_ADDR, "specific_trampoline_generic_class_init");
- ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 0);
- ARM_B (code, 0);
- *(gpointer*)code = NULL;
- code += 4;
- ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_R1);
- } else {
-#ifdef USE_JUMP_TABLES
- gpointer *jte = mono_jumptable_add_entry ();
-#endif
- tramp = mono_arch_create_specific_trampoline (NULL, MONO_TRAMPOLINE_GENERIC_CLASS_INIT, mono_get_root_domain (), &code_len);
-
- /* Jump to the actual trampoline */
-#ifdef USE_JUMP_TABLES
- code = mono_arm_load_jumptable_entry (code, jte, ARMREG_R1);
- jte [0] = tramp;
- code = emit_bx (code, ARMREG_R1);
-#else
- ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 0); /* temp reg */
- code = emit_bx (code, ARMREG_R1);
- *(gpointer*)code = tramp;
- code += 4;
-#endif
- }
-
- mono_arch_flush_icache (buf, code - buf);
- mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_HELPER, NULL);
-
- g_assert (code - buf <= tramp_size);
-
- if (info)
- *info = mono_tramp_info_create ("generic_class_init_trampoline", buf, code - buf, ji, unwind_ops);
+ *info = mono_tramp_info_create ("rgctx_fetch_trampoline_general", buf, code - buf, ji, unwind_ops);
return buf;
}
code = buf = mono_global_codeman_reserve (tramp_size);
+ unwind_ops = mono_arch_get_cie_program ();
+
tramp = mono_arch_create_specific_trampoline (NULL, MONO_TRAMPOLINE_HANDLER_BLOCK_GUARD, NULL, NULL);
/*
mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_HELPER, NULL);
g_assert (code - buf <= tramp_size);
- if (info)
- *info = mono_tramp_info_create ("handler_block_trampoline", buf, code - buf, ji, unwind_ops);
+ *info = mono_tramp_info_create ("handler_block_trampoline", buf, code - buf, ji, unwind_ops);
+
+ return buf;
+}
+
+guint8*
+mono_arch_create_sdb_trampoline (gboolean single_step, MonoTrampInfo **info, gboolean aot)
+{
+ guint8 *buf, *code;
+ GSList *unwind_ops = NULL;
+ MonoJumpInfo *ji = NULL;
+ int frame_size;
+
+ buf = code = mono_global_codeman_reserve (96);
+
+ /*
+ * Construct the MonoContext structure on the stack.
+ */
+
+ frame_size = sizeof (MonoContext);
+ frame_size = ALIGN_TO (frame_size, MONO_ARCH_FRAME_ALIGNMENT);
+ ARM_SUB_REG_IMM8 (code, ARMREG_SP, ARMREG_SP, frame_size);
+
+ /* save ip, lr and pc into their correspodings ctx.regs slots. */
+ ARM_STR_IMM (code, ARMREG_IP, ARMREG_SP, MONO_STRUCT_OFFSET (MonoContext, regs) + sizeof (mgreg_t) * ARMREG_IP);
+ ARM_STR_IMM (code, ARMREG_LR, ARMREG_SP, MONO_STRUCT_OFFSET (MonoContext, regs) + 4 * ARMREG_LR);
+ ARM_STR_IMM (code, ARMREG_LR, ARMREG_SP, MONO_STRUCT_OFFSET (MonoContext, regs) + 4 * ARMREG_PC);
+
+ /* save r0..r10 and fp */
+ ARM_ADD_REG_IMM8 (code, ARMREG_IP, ARMREG_SP, MONO_STRUCT_OFFSET (MonoContext, regs));
+ ARM_STM (code, ARMREG_IP, 0x0fff);
+
+ /* now we can update fp. */
+ ARM_MOV_REG_REG (code, ARMREG_FP, ARMREG_SP);
+
+ /* make ctx.esp hold the actual value of sp at the beginning of this method. */
+ ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_FP, frame_size);
+ ARM_STR_IMM (code, ARMREG_R0, ARMREG_IP, 4 * ARMREG_SP);
+ ARM_STR_IMM (code, ARMREG_R0, ARMREG_FP, MONO_STRUCT_OFFSET (MonoContext, regs) + 4 * ARMREG_SP);
+
+ /* make ctx.eip hold the address of the call. */
+ ARM_SUB_REG_IMM8 (code, ARMREG_LR, ARMREG_LR, 4);
+ ARM_STR_IMM (code, ARMREG_LR, ARMREG_FP, MONO_STRUCT_OFFSET (MonoContext, pc));
+
+ /* r0 now points to the MonoContext */
+ ARM_MOV_REG_REG (code, ARMREG_R0, ARMREG_FP);
+
+ /* call */
+ // FIXME: AOT
+#ifdef USE_JUMP_TABLES
+ {
+ gpointer *jte = mono_jumptable_add_entry ();
+ code = mono_arm_load_jumptable_entry (code, jte, ARMREG_IP);
+ jte [0] = function;
+ }
+#else
+ ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
+ ARM_B (code, 0);
+ if (single_step)
+ *(gpointer*)code = debugger_agent_single_step_from_context;
+ else
+ *(gpointer*)code = debugger_agent_breakpoint_from_context;
+ code += 4;
+#endif
+ ARM_BLX_REG (code, ARMREG_IP);
+
+ /* we're back; save ctx.eip and ctx.esp into the corresponding regs slots. */
+ ARM_LDR_IMM (code, ARMREG_R0, ARMREG_FP, MONO_STRUCT_OFFSET (MonoContext, pc));
+ ARM_STR_IMM (code, ARMREG_R0, ARMREG_FP, MONO_STRUCT_OFFSET (MonoContext, regs) + 4 * ARMREG_LR);
+ ARM_STR_IMM (code, ARMREG_R0, ARMREG_FP, MONO_STRUCT_OFFSET (MonoContext, regs) + 4 * ARMREG_PC);
+
+ /* make ip point to the regs array, then restore everything, including pc. */
+ ARM_ADD_REG_IMM8 (code, ARMREG_IP, ARMREG_FP, MONO_STRUCT_OFFSET (MonoContext, regs));
+ ARM_LDM (code, ARMREG_IP, 0xffff);
+
+ mono_arch_flush_icache (buf, code - buf);
+ mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_HELPER, NULL);
+
+ const char *tramp_name = single_step ? "sdb_single_step_trampoline" : "sdb_breakpoint_trampoline";
+ *info = mono_tramp_info_create (tramp_name, buf, code - buf, ji, unwind_ops);
return buf;
}
}
gpointer
-mono_arch_create_generic_class_init_trampoline (MonoTrampInfo **info, gboolean aot)
-{
- g_assert_not_reached ();
- return NULL;
-}
-
-gpointer
-mono_arch_get_nullified_class_init_trampoline (MonoTrampInfo **info)
+mono_arch_create_handler_block_trampoline (MonoTrampInfo **info, gboolean aot)
{
g_assert_not_reached ();
return NULL;
}
-gpointer
-mono_arch_create_handler_block_trampoline (MonoTrampInfo **info, gboolean aot)
+guint8*
+mono_arch_create_sdb_trampoline (gboolean single_step, MonoTrampInfo **info, gboolean aot)
{
g_assert_not_reached ();
return NULL;
i2 = (s ^ j2) ? 0 : 1;
imm32 = (imm11 << 1) | (imm10 << 12) | (i2 << 22) | (i1 << 23);
- // FIXME:
- g_assert (s == 0);
+ if (s)
+ /* Sign extend from 24 bits to 32 bits */
+ imm32 = ((gint32)imm32 << 8) >> 8;
target = code + imm32;
mono_arch_flush_icache (buf, code - buf);
mono_profiler_code_buffer_new (buf, code - buf, MONO_PROFILER_CODE_BUFFER_GENERICS_TRAMPOLINE, NULL);
+ mono_tramp_info_register (mono_tramp_info_create (NULL, buf, code - buf, NULL, NULL), domain);
+
return buf;
}
gpointer
mono_arch_get_gsharedvt_trampoline (MonoTrampInfo **info, gboolean aot)
{
- if (info)
- *info = NULL;
+ *info = NULL;
return NULL;
}
projects / mono.git / blobdiff