#include <glib.h>
#include <signal.h>
#include <string.h>
+
+#ifndef MONO_CROSS_COMPILE
#ifdef HAVE_ASM_SIGCONTEXT_H
#include <asm/sigcontext.h>
#endif /* def HAVE_ASM_SIGCONTEXT_H */
+#endif
+
#ifdef HAVE_UCONTEXT_H
#include <ucontext.h>
#endif /* def HAVE_UCONTEXT_H */
ctx_reg = ARMREG_R0;
- /* move eip to PC */
- ARM_LDR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, eip));
- ARM_STR_IMM (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET (MonoContext, regs) + (ARMREG_PC * 4));
- /* 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 * 4));
+ /* 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)));
/* restore everything */
ARM_ADD_REG_IMM8 (code, ARMREG_IP, ctx_reg, G_STRUCT_OFFSET(MonoContext, regs));
/* 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_ADD_REG_IMM8 (code, ARMREG_LR, ctx_reg, G_STRUCT_OFFSET(MonoContext, regs) + (4 * 4));
+ 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) */
ARM_MOV_REG_REG (code, ARMREG_R0, ARMREG_R2);
}
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;
+ gboolean rethrow = pc & 1;
if (!restore_context)
restore_context = mono_get_restore_context ();
- 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);
- memcpy (((guint8*)&ctx.regs) + (4 * 4), int_regs, sizeof (gulong) * 8);
+ 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); */
if (mono_object_isinst (exc, mono_defaults.exception_class)) {
if (!rethrow)
mono_ex->stack_trace = NULL;
}
- mono_handle_exception (&ctx, exc, (gpointer)(eip + 4), FALSE);
+ mono_handle_exception (&ctx, exc);
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)
{
- mono_arm_throw_exception ((MonoObject*)mono_exception_from_token (mono_defaults.corlib, type_token), eip, esp, int_regs, fp_regs);
+ /* Clear thumb bit */
+ pc &= ~1;
+
+ mono_arm_throw_exception ((MonoObject*)mono_exception_from_token (mono_defaults.corlib, type_token), pc, sp, int_regs, fp_regs);
}
-static void
-mono_arm_resume_unwind (guint32 dummy1, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs)
+void
+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);
- memcpy (((guint8*)&ctx.regs) + (4 * 4), int_regs, sizeof (gulong) * 8);
+ 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);
}
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, 10 * 4);
- mono_add_unwind_op_offset (unwind_ops, code, start, ARMREG_LR, -4);
+ mono_add_unwind_op_def_cfa (unwind_ops, code, start, ARMREG_SP, MONO_ARM_NUM_SAVED_REGS * sizeof (mgreg_t));
+ mono_add_unwind_op_offset (unwind_ops, code, start, ARMREG_LR, - sizeof (mgreg_t));
/* call throw_exception (exc, ip, sp, int_regs, fp_regs) */
/* caller sp */
- ARM_ADD_REG_IMM8 (code, ARMREG_R2, ARMREG_SP, 10 * 4); /* 10 saved regs */
+ ARM_ADD_REG_IMM8 (code, ARMREG_R2, ARMREG_SP, MONO_ARM_NUM_SAVED_REGS * sizeof (mgreg_t));
/* exc is already in place in r0 */
if (corlib) {
/* The caller ip is already in R1 */
ARM_ORR_REG_IMM8 (code, ARMREG_R1, ARMREG_R1, rethrow);
if (aot) {
- ji = mono_patch_info_list_prepend (ji, code - start, MONO_PATCH_INFO_JIT_ICALL_ADDR, corlib ? "mono_arm_throw_exception_by_token" : "mono_arm_throw_exception");
+ const char *icall_name;
+
+ if (resume_unwind)
+ icall_name = "mono_arm_resume_unwind";
+ else if (corlib)
+ icall_name = "mono_arm_throw_exception_by_token";
+ else
+ icall_name = "mono_arm_throw_exception";
+
+ ji = mono_patch_info_list_prepend (ji, code - start, MONO_PATCH_INFO_JIT_ICALL_ADDR, icall_name);
ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
ARM_B (code, 0);
*(gpointer*)(gpointer)code = NULL;
return get_throw_trampoline (168, 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 (168, TRUE, FALSE, FALSE, FALSE, "llvm_throw_corlib_exception_trampoline", &info, aot);
+ tramps = g_slist_prepend (tramps, info);
+
+ get_throw_trampoline (168, TRUE, FALSE, TRUE, FALSE, "llvm_throw_corlib_exception_abs_trampoline", &info, aot);
+ tramps = g_slist_prepend (tramps, info);
+
+ get_throw_trampoline (168, FALSE, FALSE, FALSE, TRUE, "llvm_resume_unwind_trampoline", &info, aot);
+ tramps = g_slist_prepend (tramps, info);
+
+ return tramps;
+}
+
void
mono_arch_exceptions_init (void)
{
guint8 *tramp;
-
+ GSList *tramps, *l;
+
if (mono_aot_only) {
- } else {
- /* LLVM uses the normal trampolines, but with a different name */
- tramp = get_throw_trampoline (168, TRUE, FALSE, FALSE, FALSE, "llvm_throw_corlib_exception_trampoline", NULL, FALSE);
+ tramp = mono_aot_get_trampoline ("llvm_throw_corlib_exception_trampoline");
mono_register_jit_icall (tramp, "llvm_throw_corlib_exception_trampoline", NULL, TRUE);
-
- tramp = get_throw_trampoline (168, TRUE, FALSE, TRUE, FALSE, "llvm_throw_corlib_exception_abs_trampoline", NULL, FALSE);
+ 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 = get_throw_trampoline (168, FALSE, FALSE, FALSE, TRUE, "llvm_resume_unwind_trampoline", NULL, FALSE);
+ 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_save_trampoline_xdebug_info (info);
+ mono_tramp_info_free (info);
+ }
+ g_slist_free (tramps);
}
}
gboolean
mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls,
MonoJitInfo *ji, MonoContext *ctx,
- MonoContext *new_ctx, MonoLMF **lmf,
+ 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;
- frame->managed = FALSE;
*new_ctx = *ctx;
frame->type = FRAME_TYPE_MANAGED;
- if (!ji->method->wrapper_type || ji->method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD)
- frame->managed = TRUE;
-
if (ji->from_aot)
unwind_info = mono_aot_get_unwind_info (ji, &unwind_info_len);
else
for (i = 0; i < 16; ++i)
regs [i] = new_ctx->regs [i];
- regs [ARMREG_SP] = new_ctx->esp;
mono_unwind_frame (unwind_info, unwind_info_len, ji->code_start,
(guint8*)ji->code_start + ji->code_size,
- ip, regs, MONO_MAX_IREGS, &cfa);
+ ip, regs, MONO_MAX_IREGS,
+ 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;
- 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->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 (gulong) * 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];
+ memcpy (&new_ctx->regs [0], &(*lmf)->iregs [0], sizeof (mgreg_t) * 13);
+ new_ctx->pc = (*lmf)->ip;
+ new_ctx->regs [ARMREG_SP] = (*lmf)->sp;
+ new_ctx->regs [ARMREG_FP] = (*lmf)->fp;
+
+ /* Clear thumb bit */
+ 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);
void
mono_arch_sigctx_to_monoctx (void *sigctx, MonoContext *mctx)
{
-#if 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 (gulong) * 16);
-#endif
+ mono_sigctx_to_monoctx (sigctx, mctx);
}
void
mono_arch_monoctx_to_sigctx (MonoContext *mctx, void *ctx)
{
-#if 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 (gulong) * 12);
-#endif
+ mono_monoctx_to_sigctx (mctx, ctx);
}
/*
* 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 = TlsGetValue (mono_jit_tls_id);
+ MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
MonoContext ctx;
static void (*restore_context) (MonoContext *);
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);
}
+/*
+ * This works around a gcc 4.5 bug:
+ * https://bugs.launchpad.net/ubuntu/+source/gcc-4.5/+bug/721531
+ */
+#if defined(__GNUC__)
+__attribute__((noinline))
+#endif
+static gpointer
+get_handle_signal_exception_addr (void)
+{
+ return handle_signal_exception;
+}
+
/*
* 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)
g_assert_not_reached ();
* signal is disabled, and we could run arbitrary code though the debugger. So
* resume into the normal stack and do most work there if possible.
*/
- MonoJitTlsData *jit_tls = TlsGetValue (mono_jit_tls_id);
+ MonoJitTlsData *jit_tls = mono_native_tls_get_value (mono_jit_tls_id);
guint64 sp = UCONTEXT_REG_SP (sigctx);
/* Pass the ctx parameter in TLS */
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;
UCONTEXT_REG_SP (sigctx) = sp;
- UCONTEXT_REG_PC (sigctx) = (gsize)handle_signal_exception;
+ UCONTEXT_REG_PC (sigctx) = (gsize)get_handle_signal_exception_addr ();
#ifdef UCONTEXT_REG_CPSR
- if ((gsize)UCONTEXT_REG_PC (sigctx) | 1)
+ if ((gsize)UCONTEXT_REG_PC (sigctx) & 1)
/* Transition to thumb */
UCONTEXT_REG_CPSR (sigctx) |= (1 << 5);
+ else
+ /* Transition to ARM */
+ UCONTEXT_REG_CPSR (sigctx) &= ~(1 << 5);
#endif
return TRUE;
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
*/
gpointer
mono_arch_ip_from_context (void *sigctx)
{
-#if BROKEN_LINUX
+#ifdef MONO_CROSS_COMPILE
g_assert_not_reached ();
#else
arm_ucontext *my_uc = sigctx;
#endif
}
-gboolean
-mono_arch_has_unwind_info (gconstpointer addr)
+void
+mono_arch_setup_async_callback (MonoContext *ctx, void (*async_cb)(void *fun), gpointer user_data)
{
- return FALSE;
+ 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