#endif /* def HAVE_UCONTEXT_H */
#include <mono/arch/arm/arm-codegen.h>
+#include <mono/arch/arm/arm-vfp-codegen.h>
#include <mono/metadata/appdomain.h>
#include <mono/metadata/tabledefs.h>
#include <mono/metadata/threads.h>
ctx_reg = ARMREG_R0;
- /* move eip to PC */
- ARM_LDR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, eip));
+ if (!mono_arch_is_soft_float ()) {
+ ARM_ADD_REG_IMM8 (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, fregs));
+ ARM_FLDMD (code, ARM_VFP_D0, 16, ARMREG_IP);
+ }
+
+ /* move pc to PC */
+ ARM_LDR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, pc));
ARM_STR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, regs) + (ARMREG_PC * sizeof (mgreg_t)));
- /* move sp to SP */
- ARM_LDR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, esp));
- ARM_STR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, regs) + (ARMREG_SP * sizeof (mgreg_t)));
/* restore everything */
ARM_ADD_REG_IMM8 (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET(MonoContext, regs));
mono_arch_flush_icache (start, code - start);
if (info)
- *info = mono_tramp_info_create (g_strdup_printf ("restore_context"), start, code - start, ji, unwind_ops);
+ *info = mono_tramp_info_create ("restore_context", start, code - start, ji, unwind_ops);
return start;
}
/* restore all the regs from ctx (in r0), but not sp, the stack pointer */
ctx_reg = ARMREG_R0;
- ARM_LDR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, eip));
+ ARM_LDR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, pc));
ARM_ADD_REG_IMM8 (code, ARMREG_LR, ctx_reg, G_STRUCT_OFFSET(MonoContext, regs) + (MONO_ARM_FIRST_SAVED_REG * sizeof (mgreg_t)));
ARM_LDM (code, ARMREG_LR, MONO_ARM_REGSAVE_MASK);
/* call handler at eip (r1) and set the first arg with the exception (r2) */
mono_arch_flush_icache (start, code - start);
if (info)
- *info = mono_tramp_info_create (g_strdup_printf ("call_filter"), start, code - start, ji, unwind_ops);
+ *info = mono_tramp_info_create ("call_filter", start, code - start, ji, unwind_ops);
return start;
}
void
-mono_arm_throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs)
+mono_arm_throw_exception (MonoObject *exc, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs)
{
- static void (*restore_context) (MonoContext *);
MonoContext ctx;
- gboolean rethrow = eip & 1;
-
- if (!restore_context)
- restore_context = mono_get_restore_context ();
+ gboolean rethrow = pc & 1;
- eip &= ~1; /* clear the optional rethrow bit */
+ pc &= ~1; /* clear the optional rethrow bit */
/* adjust eip so that it point into the call instruction */
- eip -= 4;
+ pc -= 4;
/*printf ("stack in throw: %p\n", esp);*/
MONO_CONTEXT_SET_BP (&ctx, int_regs [ARMREG_FP - 4]);
- MONO_CONTEXT_SET_SP (&ctx, esp);
- MONO_CONTEXT_SET_IP (&ctx, eip);
+ MONO_CONTEXT_SET_SP (&ctx, sp);
+ MONO_CONTEXT_SET_IP (&ctx, pc);
memcpy (((guint8*)&ctx.regs) + (ARMREG_R4 * sizeof (mgreg_t)), int_regs, 8 * sizeof (mgreg_t));
- /* memcpy (&ctx.fregs, fp_regs, sizeof (double) * MONO_SAVED_FREGS); */
+ memcpy (&ctx.fregs, fp_regs, sizeof (double) * 16);
if (mono_object_isinst (exc, mono_defaults.exception_class)) {
MonoException *mono_ex = (MonoException*)exc;
if (!rethrow)
mono_ex->stack_trace = NULL;
}
- mono_handle_exception (&ctx, exc, (gpointer)(eip + 4), FALSE);
- restore_context (&ctx);
+ mono_handle_exception (&ctx, exc);
+ mono_restore_context (&ctx);
g_assert_not_reached ();
}
void
-mono_arm_throw_exception_by_token (guint32 type_token, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs)
+mono_arm_throw_exception_by_token (guint32 type_token, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs)
{
/* Clear thumb bit */
- eip &= ~1;
+ pc &= ~1;
- mono_arm_throw_exception ((MonoObject*)mono_exception_from_token (mono_defaults.corlib, type_token), eip, esp, int_regs, fp_regs);
+ mono_arm_throw_exception ((MonoObject*)mono_exception_from_token (mono_defaults.corlib, type_token), pc, sp, int_regs, fp_regs);
}
void
-mono_arm_resume_unwind (guint32 dummy1, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs)
+mono_arm_resume_unwind (guint32 dummy1, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs)
{
MonoContext ctx;
- eip &= ~1; /* clear the optional rethrow bit */
+ pc &= ~1; /* clear the optional rethrow bit */
/* adjust eip so that it point into the call instruction */
- eip -= 4;
+ pc -= 4;
MONO_CONTEXT_SET_BP (&ctx, int_regs [ARMREG_FP - 4]);
- MONO_CONTEXT_SET_SP (&ctx, esp);
- MONO_CONTEXT_SET_IP (&ctx, eip);
+ MONO_CONTEXT_SET_SP (&ctx, sp);
+ MONO_CONTEXT_SET_IP (&ctx, pc);
memcpy (((guint8*)&ctx.regs) + (ARMREG_R4 * sizeof (mgreg_t)), int_regs, 8 * sizeof (mgreg_t));
mono_resume_unwind (&ctx);
guint8 *code;
MonoJumpInfo *ji = NULL;
GSList *unwind_ops = NULL;
+ int cfa_offset;
code = start = mono_global_codeman_reserve (size);
ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_SP);
ARM_PUSH (code, MONO_ARM_REGSAVE_MASK);
- mono_add_unwind_op_def_cfa (unwind_ops, code, start, ARMREG_SP, MONO_ARM_NUM_SAVED_REGS * sizeof (mgreg_t));
+ cfa_offset = MONO_ARM_NUM_SAVED_REGS * sizeof (mgreg_t);
+ mono_add_unwind_op_def_cfa (unwind_ops, code, start, ARMREG_SP, cfa_offset);
mono_add_unwind_op_offset (unwind_ops, code, start, ARMREG_LR, - sizeof (mgreg_t));
+ /* Save fp regs */
+ if (!mono_arch_is_soft_float ()) {
+ ARM_SUB_REG_IMM8 (code, ARMREG_SP, ARMREG_SP, sizeof (double) * 16);
+ cfa_offset += sizeof (double) * 16;
+ mono_add_unwind_op_def_cfa_offset (unwind_ops, code, start, cfa_offset);
+ ARM_FSTMD (code, ARM_VFP_D0, 16, ARMREG_SP);
+ }
+
+ /* Param area */
+ ARM_SUB_REG_IMM8 (code, ARMREG_SP, ARMREG_SP, 8);
+ cfa_offset += 8;
+ mono_add_unwind_op_def_cfa_offset (unwind_ops, code, start, cfa_offset);
+
/* call throw_exception (exc, ip, sp, int_regs, fp_regs) */
/* caller sp */
- ARM_ADD_REG_IMM8 (code, ARMREG_R2, ARMREG_SP, MONO_ARM_NUM_SAVED_REGS * sizeof (mgreg_t));
+ ARM_ADD_REG_IMM8 (code, ARMREG_R2, ARMREG_SP, cfa_offset);
/* exc is already in place in r0 */
if (corlib) {
/* The caller ip is already in R1 */
} else {
ARM_MOV_REG_REG (code, ARMREG_R1, ARMREG_LR); /* caller ip */
}
- /* FIXME: pointer to the saved fp regs */
- /*pos = alloc_size - sizeof (double) * MONO_SAVED_FREGS;
- ppc_addi (code, ppc_r7, ppc_sp, pos);*/
- /* pointer to the saved int regs */
- ARM_MOV_REG_REG (code, ARMREG_R3, ARMREG_SP); /* the pushed regs */
- /* we encode rethrow in the ip, so we avoid args on the stack */
+ /* int regs */
+ ARM_ADD_REG_IMM8 (code, ARMREG_R3, ARMREG_SP, (cfa_offset - (MONO_ARM_NUM_SAVED_REGS * sizeof (mgreg_t))));
+ /* we encode rethrow in the ip */
ARM_ORR_REG_IMM8 (code, ARMREG_R1, ARMREG_R1, rethrow);
+ /* fp regs */
+ ARM_ADD_REG_IMM8 (code, ARMREG_LR, ARMREG_SP, 8);
+ ARM_STR_IMM (code, ARMREG_LR, ARMREG_SP, 0);
if (aot) {
const char *icall_name;
mono_arch_flush_icache (start, code - start);
if (info)
- *info = mono_tramp_info_create (g_strdup_printf (tramp_name), start, code - start, ji, unwind_ops);
+ *info = mono_tramp_info_create (tramp_name, start, code - start, ji, unwind_ops);
return start;
}
MonoTrampInfo *info = l->data;
mono_register_jit_icall (info->code, g_strdup (info->name), NULL, TRUE);
- mono_save_trampoline_xdebug_info (info);
- mono_tramp_info_free (info);
+ mono_tramp_info_register (info);
}
g_slist_free (tramps);
}
if (ji != NULL) {
int i;
- gssize regs [MONO_MAX_IREGS + 1];
+ gssize regs [MONO_MAX_IREGS + 1 + 8];
guint8 *cfa;
guint32 unwind_info_len;
guint8 *unwind_info;
frame->type = FRAME_TYPE_MANAGED;
- if (ji->from_aot)
- unwind_info = mono_aot_get_unwind_info (ji, &unwind_info_len);
- else
- unwind_info = mono_get_cached_unwind_info (ji->used_regs, &unwind_info_len);
+ unwind_info = mono_jinfo_get_unwind_info (ji, &unwind_info_len);
+
+ /*
+ printf ("%s %p %p\n", ji->d.method->name, ji->code_start, ip);
+ mono_print_unwind_info (unwind_info, unwind_info_len);
+ */
for (i = 0; i < 16; ++i)
regs [i] = new_ctx->regs [i];
- regs [ARMREG_SP] = new_ctx->esp;
+#ifdef TARGET_IOS
+ /* On IOS, d8..d15 are callee saved. They are mapped to 8..15 in unwind.c */
+ for (i = 0; i < 8; ++i)
+ regs [MONO_MAX_IREGS + i] = new_ctx->fregs [8 + i];
+#endif
mono_unwind_frame (unwind_info, unwind_info_len, ji->code_start,
(guint8*)ji->code_start + ji->code_size,
- ip, regs, MONO_MAX_IREGS,
+ ip, regs, MONO_MAX_IREGS + 8,
save_locations, MONO_MAX_IREGS, &cfa);
for (i = 0; i < 16; ++i)
new_ctx->regs [i] = regs [i];
- new_ctx->eip = regs [ARMREG_LR];
- new_ctx->esp = (gsize)cfa;
+ new_ctx->pc = regs [ARMREG_LR];
+ new_ctx->regs [ARMREG_SP] = (gsize)cfa;
+#ifdef TARGET_IOS
+ for (i = 0; i < 8; ++i)
+ new_ctx->fregs [8 + i] = regs [MONO_MAX_IREGS + i];
+#endif
- if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->esp)) {
+ if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->sp)) {
/* remove any unused lmf */
*lmf = (gpointer)(((gsize)(*lmf)->previous_lmf) & ~3);
}
/* Clear thumb bit */
- new_ctx->eip &= ~1;
+ new_ctx->pc &= ~1;
/* we substract 1, so that the IP points into the call instruction */
- new_ctx->eip--;
+ new_ctx->pc--;
return TRUE;
} else if (*lmf) {
frame->type = FRAME_TYPE_MANAGED_TO_NATIVE;
- if ((ji = mini_jit_info_table_find (domain, (gpointer)(*lmf)->eip, NULL))) {
+ if ((ji = mini_jit_info_table_find (domain, (gpointer)(*lmf)->ip, NULL))) {
frame->ji = ji;
} else {
if (!(*lmf)->method)
* The LMF is saved at the start of the method using:
* ARM_MOV_REG_REG (code, ARMREG_IP, ARMREG_SP)
* ARM_PUSH (code, 0x5ff0);
- * So it stores the register state as it existed at the caller.
+ * So it stores the register state as it existed at the caller. We need to
+ * produce the register state which existed at the time of the call which
+ * transitioned to native call, so we save the sp/fp/ip in the LMF.
*/
memcpy (&new_ctx->regs [0], &(*lmf)->iregs [0], sizeof (mgreg_t) * 13);
- /* SP is skipped */
- new_ctx->regs [ARMREG_LR] = (*lmf)->iregs [ARMREG_LR - 1];
- new_ctx->esp = (*lmf)->iregs [ARMREG_IP];
- new_ctx->eip = new_ctx->regs [ARMREG_LR];
+ new_ctx->pc = (*lmf)->ip;
+ new_ctx->regs [ARMREG_SP] = (*lmf)->sp;
+ new_ctx->regs [ARMREG_FP] = (*lmf)->fp;
/* Clear thumb bit */
- new_ctx->eip &= ~1;
+ new_ctx->pc &= ~1;
/* we substract 1, so that the IP points into the call instruction */
- new_ctx->eip--;
+ new_ctx->pc--;
*lmf = (gpointer)(((gsize)(*lmf)->previous_lmf) & ~3);
return FALSE;
}
+#if MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX
void
mono_arch_sigctx_to_monoctx (void *sigctx, MonoContext *mctx)
{
-#ifdef MONO_CROSS_COMPILE
- g_assert_not_reached ();
-#elif BROKEN_LINUX
- g_assert_not_reached ();
-#else
- arm_ucontext *my_uc = sigctx;
-
- mctx->eip = UCONTEXT_REG_PC (my_uc);
- mctx->esp = UCONTEXT_REG_SP (my_uc);
- memcpy (&mctx->regs, &UCONTEXT_REG_R0 (my_uc), sizeof (mgreg_t) * 16);
-#endif
+ mono_sigctx_to_monoctx (sigctx, mctx);
}
void
mono_arch_monoctx_to_sigctx (MonoContext *mctx, void *ctx)
{
-#ifdef MONO_CROSS_COMPILE
- g_assert_not_reached ();
-#elif BROKEN_LINUX
- g_assert_not_reached ();
-#else
- arm_ucontext *my_uc = ctx;
-
- UCONTEXT_REG_PC (my_uc) = mctx->eip;
- UCONTEXT_REG_SP (my_uc) = mctx->regs [ARMREG_FP];
- /* The upper registers are not guaranteed to be valid */
- memcpy (&UCONTEXT_REG_R0 (my_uc), &mctx->regs, sizeof (mgreg_t) * 12);
-#endif
+ mono_monoctx_to_sigctx (mctx, ctx);
}
+#endif /* MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX */
/*
* handle_exception:
* Called by resuming from a signal handler.
*/
static void
-handle_signal_exception (gpointer obj, gboolean test_only)
+handle_signal_exception (gpointer obj)
{
MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
MonoContext ctx;
- static void (*restore_context) (MonoContext *);
-
- if (!restore_context)
- restore_context = mono_get_restore_context ();
memcpy (&ctx, &jit_tls->ex_ctx, sizeof (MonoContext));
- mono_handle_exception (&ctx, obj, MONO_CONTEXT_GET_IP (&ctx), test_only);
+ mono_handle_exception (&ctx, obj);
- restore_context (&ctx);
+ mono_restore_context (&ctx);
}
/*
* This is the function called from the signal handler
*/
gboolean
-mono_arch_handle_exception (void *ctx, gpointer obj, gboolean test_only)
+mono_arch_handle_exception (void *ctx, gpointer obj)
{
-#if defined(MONO_CROSS_COMPILE)
+#if defined(MONO_CROSS_COMPILE) || !defined(MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX)
g_assert_not_reached ();
#elif defined(MONO_ARCH_USE_SIGACTION)
arm_ucontext *sigctx = ctx;
mono_arch_sigctx_to_monoctx (sigctx, &jit_tls->ex_ctx);
/* The others in registers */
UCONTEXT_REG_R0 (sigctx) = (gsize)obj;
- UCONTEXT_REG_R1 (sigctx) = test_only;
/* Allocate a stack frame */
sp -= 16;
mono_arch_sigctx_to_monoctx (ctx, &mctx);
- result = mono_handle_exception (&mctx, obj, (gpointer)mctx.eip, test_only);
+ result = mono_handle_exception (&mctx, obj);
/* restore the context so that returning from the signal handler will invoke
* the catch clause
*/
{
#ifdef MONO_CROSS_COMPILE
g_assert_not_reached ();
-#elif BROKEN_LINUX
+#elif defined(__native_client__)
g_assert_not_reached ();
#else
arm_ucontext *my_uc = sigctx;
return (void*) UCONTEXT_REG_PC (my_uc);
#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 -= 16;
+ MONO_CONTEXT_SET_SP (ctx, sp);
+ MONO_CONTEXT_SET_IP (ctx, async_cb);
+
+ // FIXME: thumb/arm
+}
+
+/*
+ * 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);
+ if ((mgreg_t)MONO_CONTEXT_GET_IP (ctx) & 1)
+ /* Transition to thumb */
+ ctx->cpsr |= (1 << 5);
+ else
+ /* Transition to ARM */
+ ctx->cpsr &= ~(1 << 5);
+}
projects / mono.git / blobdiff