#include <signal.h>
#include <string.h>
#include <stddef.h>
+#if HAVE_UCONTEXT_H
#include <ucontext.h>
+#endif
#include <mono/arch/ppc/ppc-codegen.h>
#include <mono/metadata/appdomain.h>
#define restore_regs_from_context(ctx_reg,ip_reg,tmp_reg) do { \
int reg; \
- ppc_load_reg (code, ip_reg, G_STRUCT_OFFSET (MonoContext, sc_ir), ctx_reg); \
- ppc_load_multiple_regs (code, ppc_r13, ctx_reg, G_STRUCT_OFFSET (MonoContext, regs)); \
+ ppc_ldptr (code, ip_reg, G_STRUCT_OFFSET (MonoContext, sc_ir), ctx_reg); \
+ ppc_load_multiple_regs (code, ppc_r13, G_STRUCT_OFFSET (MonoContext, regs), ctx_reg); \
for (reg = 0; reg < MONO_SAVED_FREGS; ++reg) { \
ppc_lfd (code, (14 + reg), \
G_STRUCT_OFFSET(MonoContext, fregs) + reg * sizeof (gdouble), ctx_reg); \
/* nothing to do */
#define setup_context(ctx)
-#ifdef __mono_ppc64__
-static gpointer
-ppc_create_ftnptr (gpointer addr)
+#ifdef PPC_USES_FUNCTION_DESCRIPTOR
+guint8*
+mono_ppc_create_pre_code_ftnptr (guint8 *code)
{
- gpointer *desc;
+ MonoPPCFunctionDescriptor *ftnptr = (MonoPPCFunctionDescriptor*)code;
- desc = mono_global_codeman_reserve (3 * sizeof (gpointer));
+ code += sizeof (MonoPPCFunctionDescriptor);
+ ftnptr->code = code;
+ ftnptr->toc = NULL;
+ ftnptr->env = NULL;
- desc [0] = addr;
- desc [1] = NULL;
- desc [2] = NULL;
-
- return desc;
+ return code;
}
-#else
-#define ppc_create_ftnptr(a) a
#endif
/*
* The first argument in r3 is the pointer to the context.
*/
gpointer
-mono_arch_get_restore_context (void)
+mono_arch_get_restore_context (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *ftnptr = NULL;
-
- guint8 *code;
- guint8 *start;
- int size = MONO_PPC_32_64_CASE (128, 172);
-
- if (ftnptr)
- return ftnptr;
+ guint8 *start, *code;
+ int size = MONO_PPC_32_64_CASE (128, 172) + PPC_FTNPTR_SIZE;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
code = start = mono_global_codeman_reserve (size);
+ if (!aot)
+ code = mono_ppc_create_pre_code_ftnptr (code);
restore_regs_from_context (ppc_r3, ppc_r4, ppc_r5);
/* restore also the stack pointer */
- ppc_load_reg (code, ppc_sp, G_STRUCT_OFFSET (MonoContext, sc_sp), ppc_r3);
+ ppc_ldptr (code, ppc_sp, G_STRUCT_OFFSET (MonoContext, sc_sp), ppc_r3);
//ppc_break (code);
/* jump to the saved IP */
ppc_mtctr (code, ppc_r4);
/* never reached */
ppc_break (code);
- g_assert ((code - start) < size);
+ g_assert ((code - start) <= size);
mono_arch_flush_icache (start, code - start);
- ftnptr = ppc_create_ftnptr (start);
- return ftnptr;
+
+ if (info)
+ *info = mono_tramp_info_create (g_strdup_printf ("restore_context"), start, code - start, ji, unwind_ops);
+
+ return start;
+}
+
+#define SAVED_REGS_LENGTH (sizeof (gdouble) * MONO_SAVED_FREGS + sizeof (gpointer) * MONO_SAVED_GREGS)
+#define ALIGN_STACK_FRAME_SIZE(s) (((s) + MONO_ARCH_FRAME_ALIGNMENT - 1) & ~(MONO_ARCH_FRAME_ALIGNMENT - 1))
+/* The 64 bytes here are for outgoing arguments and a bit of spare.
+ We don't use it all, but it doesn't hurt. */
+#define REG_SAVE_STACK_FRAME_SIZE (ALIGN_STACK_FRAME_SIZE (SAVED_REGS_LENGTH + PPC_MINIMAL_STACK_SIZE + 64))
+
+static guint8*
+emit_save_saved_regs (guint8 *code, int pos)
+{
+ int i;
+
+ for (i = 31; i >= 14; --i) {
+ pos -= sizeof (gdouble);
+ ppc_stfd (code, i, pos, ppc_sp);
+ }
+ pos -= sizeof (gpointer) * MONO_SAVED_GREGS;
+ ppc_store_multiple_regs (code, ppc_r13, pos, ppc_sp);
+
+ return code;
}
/*
* @exc object in this case).
*/
gpointer
-mono_arch_get_call_filter (void)
+mono_arch_get_call_filter (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *ftnptr = NULL;
-
- guint8 *start;
- guint8 *code;
+ guint8 *start, *code;
int alloc_size, pos, i;
- int size = MONO_PPC_32_64_CASE (320, 500);
-
- if (ftnptr)
- return ftnptr;
+ int size = MONO_PPC_32_64_CASE (320, 500) + PPC_FTNPTR_SIZE;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
/* call_filter (MonoContext *ctx, unsigned long eip, gpointer exc) */
code = start = mono_global_codeman_reserve (size);
+ if (!aot)
+ code = mono_ppc_create_pre_code_ftnptr (code);
- /* save all the regs on the stack */
- pos = 0;
- for (i = 31; i >= 14; --i) {
- pos += sizeof (gdouble);
- ppc_stfd (code, i, -pos, ppc_sp);
- }
- pos += sizeof (gulong) * MONO_SAVED_GREGS;
- ppc_store_multiple_regs (code, ppc_r13, ppc_sp, -pos);
-
+ /* store ret addr */
ppc_mflr (code, ppc_r0);
- ppc_store_reg (code, ppc_r0, PPC_RET_ADDR_OFFSET, ppc_sp);
+ ppc_stptr (code, ppc_r0, PPC_RET_ADDR_OFFSET, ppc_sp);
- alloc_size = PPC_MINIMAL_STACK_SIZE + pos + 64;
- // align to MONO_ARCH_FRAME_ALIGNMENT bytes
- alloc_size += MONO_ARCH_FRAME_ALIGNMENT - 1;
- alloc_size &= ~(MONO_ARCH_FRAME_ALIGNMENT - 1);
+ alloc_size = REG_SAVE_STACK_FRAME_SIZE;
/* allocate stack frame and set link from sp in ctx */
g_assert ((alloc_size & (MONO_ARCH_FRAME_ALIGNMENT-1)) == 0);
- ppc_load_reg (code, ppc_r0, G_STRUCT_OFFSET (MonoContext, sc_sp), ppc_r3);
- ppc_load_reg_indexed (code, ppc_r0, ppc_r0, ppc_r0);
- ppc_store_reg_update (code, ppc_r0, -alloc_size, ppc_sp);
+ ppc_ldptr (code, ppc_r0, G_STRUCT_OFFSET (MonoContext, sc_sp), ppc_r3);
+ ppc_ldptr_indexed (code, ppc_r0, ppc_r0, ppc_r0);
+ ppc_stptr_update (code, ppc_r0, -alloc_size, ppc_sp);
+
+ code = emit_save_saved_regs (code, alloc_size);
/* restore all the regs from ctx (in r3), but not r1, the stack pointer */
restore_regs_from_context (ppc_r3, ppc_r6, ppc_r7);
ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
/* epilog */
- ppc_load_reg (code, ppc_r0, alloc_size + PPC_RET_ADDR_OFFSET, ppc_sp);
+ ppc_ldptr (code, ppc_r0, alloc_size + PPC_RET_ADDR_OFFSET, ppc_sp);
ppc_mtlr (code, ppc_r0);
- ppc_addic (code, ppc_sp, ppc_sp, alloc_size);
-
+
/* restore all the regs from the stack */
- pos = 0;
+ pos = alloc_size;
for (i = 31; i >= 14; --i) {
- pos += sizeof (double);
- ppc_lfd (code, i, -pos, ppc_sp);
+ pos -= sizeof (gdouble);
+ ppc_lfd (code, i, pos, ppc_sp);
}
- pos += sizeof (gulong) * MONO_SAVED_GREGS;
- ppc_load_multiple_regs (code, ppc_r13, ppc_sp, -pos);
+ pos -= sizeof (gpointer) * MONO_SAVED_GREGS;
+ ppc_load_multiple_regs (code, ppc_r13, pos, ppc_sp);
+ ppc_addic (code, ppc_sp, ppc_sp, alloc_size);
ppc_blr (code);
g_assert ((code - start) < size);
mono_arch_flush_icache (start, code - start);
- ftnptr = ppc_create_ftnptr (start);
- return ftnptr;
+
+ if (info)
+ *info = mono_tramp_info_create (g_strdup_printf ("call_filter"), start, code - start, ji, unwind_ops);
+
+ return start;
}
-static void
-throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs, gboolean rethrow)
+void
+mono_ppc_throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, mgreg_t *int_regs, gdouble *fp_regs, gboolean rethrow)
{
static void (*restore_context) (MonoContext *);
MonoContext ctx;
if (!restore_context)
- restore_context = mono_arch_get_restore_context ();
+ restore_context = mono_get_restore_context ();
/* adjust eip so that it point into the call instruction */
eip -= 4;
/*printf ("stack in throw: %p\n", esp);*/
MONO_CONTEXT_SET_BP (&ctx, esp);
MONO_CONTEXT_SET_IP (&ctx, eip);
- memcpy (&ctx.regs, int_regs, sizeof (gulong) * MONO_SAVED_GREGS);
+ memcpy (&ctx.regs, int_regs, sizeof (mgreg_t) * MONO_SAVED_GREGS);
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, FALSE);
+ mono_handle_exception (&ctx, exc);
restore_context (&ctx);
g_assert_not_reached ();
* Returns a function pointer which can be used to raise
* exceptions. The returned function has the following
* signature: void (*func) (MonoException *exc); or
- * void (*func) (char *exc_name);
+ * void (*func) (guint32 ex_token, gpointer ip)
*
*/
-static gpointer
-mono_arch_get_throw_exception_generic (guint8 *start, int size, int by_name, gboolean rethrow)
+static gpointer
+mono_arch_get_throw_exception_generic (int size, MonoTrampInfo **info, int corlib, gboolean rethrow, gboolean aot)
{
- guint8 *code;
- int alloc_size, pos, i;
+ guint8 *start, *code;
+ int alloc_size, pos;
+ MonoJumpInfo *ji = NULL;
+ GSList *unwind_ops = NULL;
- code = start;
-
- /* save all the regs on the stack */
- pos = 0;
- for (i = 31; i >= 14; --i) {
- pos += sizeof (gdouble);
- ppc_stfd (code, i, -pos, ppc_sp);
- }
- pos += sizeof (gulong) * MONO_SAVED_GREGS;
- ppc_store_multiple_regs (code, ppc_r13, ppc_sp, -pos);
+ code = start = mono_global_codeman_reserve (size);
+ if (!aot)
+ code = mono_ppc_create_pre_code_ftnptr (code);
- ppc_mflr (code, ppc_r0);
- ppc_store_reg (code, ppc_r0, PPC_RET_ADDR_OFFSET, ppc_sp);
+ /* store ret addr */
+ if (corlib)
+ ppc_mr (code, ppc_r0, ppc_r4);
+ else
+ ppc_mflr (code, ppc_r0);
+ ppc_stptr (code, ppc_r0, PPC_RET_ADDR_OFFSET, ppc_sp);
- /* The 64 bytes here are for outgoing arguments and a bit of
- spare. We don't use it all, but it doesn't hurt. */
- alloc_size = PPC_MINIMAL_STACK_SIZE + pos + 64;
- // align to MONO_ARCH_FRAME_ALIGNMENT bytes
- alloc_size += MONO_ARCH_FRAME_ALIGNMENT - 1;
- alloc_size &= ~(MONO_ARCH_FRAME_ALIGNMENT - 1);
+ alloc_size = REG_SAVE_STACK_FRAME_SIZE;
g_assert ((alloc_size & (MONO_ARCH_FRAME_ALIGNMENT-1)) == 0);
- ppc_store_reg_update (code, ppc_sp, -alloc_size, ppc_sp);
+ ppc_stptr_update (code, ppc_sp, -alloc_size, ppc_sp);
+
+ code = emit_save_saved_regs (code, alloc_size);
//ppc_break (code);
- if (by_name) {
- ppc_mr (code, ppc_r5, ppc_r3);
- ppc_load (code, ppc_r3, (gulong)mono_defaults.corlib);
- ppc_load (code, ppc_r4, "System");
- ppc_load_func (code, ppc_r0, mono_exception_from_name);
- ppc_mtctr (code, ppc_r0);
- ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
+ if (corlib) {
+ ppc_mr (code, ppc_r4, ppc_r3);
+
+ if (aot) {
+ code = mono_arch_emit_load_aotconst (start, code, &ji, MONO_PATCH_INFO_IMAGE, mono_defaults.corlib);
+ ppc_mr (code, ppc_r3, ppc_r11);
+ code = mono_arch_emit_load_aotconst (start, code, &ji, MONO_PATCH_INFO_JIT_ICALL_ADDR, "mono_exception_from_token");
+#ifdef PPC_USES_FUNCTION_DESCRIPTOR
+ ppc_ldptr (code, ppc_r2, sizeof (gpointer), ppc_r11);
+ ppc_ldptr (code, ppc_r11, 0, ppc_r11);
+#endif
+ ppc_mtctr (code, ppc_r11);
+ ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
+ } else {
+ ppc_load (code, ppc_r3, (gulong)mono_defaults.corlib);
+ ppc_load_func (code, ppc_r0, mono_exception_from_token);
+ ppc_mtctr (code, ppc_r0);
+ ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
+ }
}
/* call throw_exception (exc, ip, sp, int_regs, fp_regs) */
/* caller sp */
- ppc_load_reg (code, ppc_r5, 0, ppc_sp);
+ ppc_ldptr (code, ppc_r5, 0, ppc_sp);
/* exc is already in place in r3 */
- if (by_name)
- ppc_load_reg (code, ppc_r4, PPC_RET_ADDR_OFFSET, ppc_r5);
+ if (corlib)
+ ppc_ldptr (code, ppc_r4, PPC_RET_ADDR_OFFSET, ppc_r5);
else
ppc_mr (code, ppc_r4, ppc_r0); /* caller ip */
/* pointer to the saved fp regs */
- pos = alloc_size - sizeof (double) * MONO_SAVED_FREGS;
+ pos = alloc_size - sizeof (gdouble) * MONO_SAVED_FREGS;
ppc_addi (code, ppc_r7, ppc_sp, pos);
/* pointer to the saved int regs */
- pos -= sizeof (gulong) * MONO_SAVED_GREGS;
+ pos -= sizeof (gpointer) * MONO_SAVED_GREGS;
ppc_addi (code, ppc_r6, ppc_sp, pos);
ppc_li (code, ppc_r8, rethrow);
- ppc_load_func (code, ppc_r0, throw_exception);
- ppc_mtctr (code, ppc_r0);
- ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
+ if (aot) {
+ // This can be called from runtime code, which can't guarantee that
+ // r30 contains the got address.
+ // So emit the got address loading code too
+ code = mono_arch_emit_load_got_addr (start, code, NULL, &ji);
+ code = mono_arch_emit_load_aotconst (start, code, &ji, MONO_PATCH_INFO_JIT_ICALL_ADDR, "mono_ppc_throw_exception");
+#ifdef PPC_USES_FUNCTION_DESCRIPTOR
+ ppc_ldptr (code, ppc_r2, sizeof (gpointer), ppc_r11);
+ ppc_ldptr (code, ppc_r11, 0, ppc_r11);
+#endif
+ ppc_mtctr (code, ppc_r11);
+ ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
+ } else {
+ ppc_load_func (code, ppc_r0, mono_ppc_throw_exception);
+ ppc_mtctr (code, ppc_r0);
+ ppc_bcctrl (code, PPC_BR_ALWAYS, 0);
+ }
/* we should never reach this breakpoint */
ppc_break (code);
- g_assert ((code - start) < size);
+ g_assert ((code - start) <= size);
mono_arch_flush_icache (start, code - start);
- return ppc_create_ftnptr (start);
+
+ if (info)
+ *info = mono_tramp_info_create (g_strdup_printf (corlib ? "throw_corlib_exception" : (rethrow ? "rethrow_exception" : "throw_exception")), start, code - start, ji, unwind_ops);
+
+ return start;
}
/**
*
*/
gpointer
-mono_arch_get_rethrow_exception (void)
+mono_arch_get_rethrow_exception (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *start = NULL;
- static int inited = 0;
+ int size = MONO_PPC_32_64_CASE (132, 224) + PPC_FTNPTR_SIZE;
- guint8 *code;
- int size = MONO_PPC_32_64_CASE (132, 224);
-
- if (inited)
- return start;
- code = mono_global_codeman_reserve (size);
- start = mono_arch_get_throw_exception_generic (code, size, FALSE, TRUE);
- inited = 1;
- return start;
+ if (aot)
+ size += 64;
+ return mono_arch_get_throw_exception_generic (size, info, FALSE, TRUE, aot);
}
+
/**
* arch_get_throw_exception:
*
* x86_call_code (code, arch_get_throw_exception ());
*
*/
-gpointer
-mono_arch_get_throw_exception (void)
+gpointer
+mono_arch_get_throw_exception (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *start = NULL;
- static int inited = 0;
-
- guint8 *code;
- int size = MONO_PPC_32_64_CASE (132, 224);
+ int size = MONO_PPC_32_64_CASE (132, 224) + PPC_FTNPTR_SIZE;
- if (inited)
- return start;
- code = mono_global_codeman_reserve (size);
- start = mono_arch_get_throw_exception_generic (code, size, FALSE, FALSE);
- inited = 1;
- return start;
+ if (aot)
+ size += 64;
+ return mono_arch_get_throw_exception_generic (size, info, FALSE, FALSE, aot);
}
/**
- * arch_get_throw_exception_by_name:
+ * mono_arch_get_throw_corlib_exception:
*
* Returns a function pointer which can be used to raise
* corlib exceptions. The returned function has the following
- * signature: void (*func) (char *exc_name);
- * For example to raise an arithmetic exception you can use:
- *
- * x86_push_imm (code, "ArithmeticException");
- * x86_call_code (code, arch_get_throw_exception_by_name ());
- *
+ * signature: void (*func) (guint32 ex_token, guint32 offset);
+ * On PPC, we pass the ip instead of the offset
*/
-gpointer
-mono_arch_get_throw_exception_by_name (void)
+gpointer
+mono_arch_get_throw_corlib_exception (MonoTrampInfo **info, gboolean aot)
{
- static guint8 *start = NULL;
- static int inited = 0;
+ int size = MONO_PPC_32_64_CASE (168, 304) + PPC_FTNPTR_SIZE;
- guint8 *code;
- int size = MONO_PPC_32_64_CASE (168, 292);
-
- if (inited)
- return start;
- code = mono_global_codeman_reserve (size);
- start = mono_arch_get_throw_exception_generic (code, size, TRUE, FALSE);
- inited = 1;
- return start;
+ if (aot)
+ size += 64;
+ return mono_arch_get_throw_exception_generic (size, info, TRUE, FALSE, aot);
}
-/* mono_arch_find_jit_info:
+/*
+ * mono_arch_find_jit_info:
*
- * This function is used to gather information from @ctx. It return the
- * MonoJitInfo of the corresponding function, unwinds one stack frame and
- * stores the resulting context into @new_ctx. It also stores a string
- * describing the stack location into @trace (if not NULL), and modifies
- * the @lmf if necessary. @native_offset return the IP offset from the
- * start of the function or -1 if that info is not available.
+ * See exceptions-amd64.c for docs.
*/
-MonoJitInfo *
-mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, MonoJitInfo *res, MonoJitInfo *prev_ji, MonoContext *ctx,
- MonoContext *new_ctx, MonoLMF **lmf, gboolean *managed)
+gboolean
+mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls,
+ MonoJitInfo *ji, MonoContext *ctx,
+ MonoContext *new_ctx, MonoLMF **lmf,
+ mgreg_t **save_locations,
+ StackFrameInfo *frame)
{
- MonoJitInfo *ji;
gpointer ip = MONO_CONTEXT_GET_IP (ctx);
MonoPPCStackFrame *sframe;
- /* Avoid costly table lookup during stack overflow */
- if (prev_ji && (ip > prev_ji->code_start && ((guint8*)ip < ((guint8*)prev_ji->code_start) + prev_ji->code_size)))
- ji = prev_ji;
- else
- ji = mono_jit_info_table_find (domain, ip);
+ memset (frame, 0, sizeof (StackFrameInfo));
+ frame->ji = ji;
- if (managed)
- *managed = FALSE;
+ *new_ctx = *ctx;
+ setup_context (new_ctx);
if (ji != NULL) {
- gint32 address;
- int offset, i;
+ int i;
+ mgreg_t regs [ppc_lr + 1];
+ guint8 *cfa;
+ guint32 unwind_info_len;
+ guint8 *unwind_info;
- *new_ctx = *ctx;
- setup_context (new_ctx);
+ frame->type = FRAME_TYPE_MANAGED;
- if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->ebp)) {
- /* remove any unused lmf */
- *lmf = (*lmf)->previous_lmf;
- }
-
- address = (char *)ip - (char *)ji->code_start;
-
- if (managed)
- if (!ji->method->wrapper_type)
- *managed = TRUE;
+ 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);
sframe = (MonoPPCStackFrame*)MONO_CONTEXT_GET_SP (ctx);
MONO_CONTEXT_SET_BP (new_ctx, sframe->sp);
if (ji->method->save_lmf) {
- memcpy (&new_ctx->fregs, (char*)sframe->sp - sizeof (double) * MONO_SAVED_FREGS, sizeof (double) * MONO_SAVED_FREGS);
- memcpy (&new_ctx->regs, (char*)sframe->sp - sizeof (double) * MONO_SAVED_FREGS - sizeof (gulong) * MONO_SAVED_GREGS, sizeof (gulong) * MONO_SAVED_GREGS);
- } else if (ji->used_regs) {
- /* keep updated with emit_prolog in mini-ppc.c */
- offset = 0;
- /* FIXME handle floating point args
- for (i = 31; i >= 14; --i) {
- if (ji->used_fregs & (1 << i)) {
- offset += sizeof (double);
- new_ctx->fregs [i - 14] = *(gulong*)((char*)sframe->sp - offset);
- }
- }*/
- for (i = 31; i >= 13; --i) {
- if (ji->used_regs & (1 << i)) {
- offset += sizeof (gulong);
- new_ctx->regs [i - 13] = *(gulong*)((char*)sframe->sp - offset);
- }
- }
+ /* sframe->sp points just past the end of the LMF */
+ guint8 *lmf_addr = (guint8*)sframe->sp - sizeof (MonoLMF);
+ memcpy (&new_ctx->fregs, lmf_addr + G_STRUCT_OFFSET (MonoLMF, fregs), sizeof (double) * MONO_SAVED_FREGS);
+ memcpy (&new_ctx->regs, lmf_addr + G_STRUCT_OFFSET (MonoLMF, iregs), sizeof (mgreg_t) * MONO_SAVED_GREGS);
+ /* the calling IP is in the parent frame */
+ sframe = (MonoPPCStackFrame*)sframe->sp;
+ /* we substract 4, so that the IP points into the call instruction */
+ MONO_CONTEXT_SET_IP (new_ctx, sframe->lr - 4);
+ } else {
+ regs [ppc_lr] = ctx->sc_ir;
+ regs [ppc_sp] = ctx->sc_sp;
+ for (i = 0; i < MONO_SAVED_GREGS; ++i)
+ regs [ppc_r13 + i] = ctx->regs [i];
+
+ mono_unwind_frame (unwind_info, unwind_info_len, ji->code_start,
+ (guint8*)ji->code_start + ji->code_size,
+ ip, regs, ppc_lr + 1,
+ save_locations, MONO_MAX_IREGS, &cfa);
+
+ /* we substract 4, so that the IP points into the call instruction */
+ MONO_CONTEXT_SET_IP (new_ctx, regs [ppc_lr] - 4);
+ MONO_CONTEXT_SET_BP (new_ctx, cfa);
+
+ for (i = 0; i < MONO_SAVED_GREGS; ++i)
+ new_ctx->regs [i] = regs [ppc_r13 + i];
+ }
+
+ if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->ebp)) {
+ /* remove any unused lmf */
+ *lmf = (*lmf)->previous_lmf;
}
- /* the calling IP is in the parent frame */
- sframe = (MonoPPCStackFrame*)sframe->sp;
- /* we substract 4, so that the IP points into the call instruction */
- MONO_CONTEXT_SET_IP (new_ctx, sframe->lr - 4);
- return ji;
+ return TRUE;
} else if (*lmf) {
- *new_ctx = *ctx;
- setup_context (new_ctx);
-
- if ((ji = mono_jit_info_table_find (domain, (gpointer)(*lmf)->eip))) {
+ if ((ji = mini_jit_info_table_find (domain, (gpointer)(*lmf)->eip, NULL))) {
} else {
if (!(*lmf)->method)
- return (gpointer)-1;
+ return FALSE;
- memset (res, 0, sizeof (MonoJitInfo));
- res->method = (*lmf)->method;
+ /* Trampoline lmf frame */
+ frame->method = (*lmf)->method;
}
/*sframe = (MonoPPCStackFrame*)MONO_CONTEXT_GET_SP (ctx);
MONO_CONTEXT_SET_IP (new_ctx, sframe->lr);*/
MONO_CONTEXT_SET_BP (new_ctx, (*lmf)->ebp);
MONO_CONTEXT_SET_IP (new_ctx, (*lmf)->eip);
- memcpy (&new_ctx->regs, (*lmf)->iregs, sizeof (gulong) * MONO_SAVED_GREGS);
+ memcpy (&new_ctx->regs, (*lmf)->iregs, sizeof (mgreg_t) * MONO_SAVED_GREGS);
memcpy (&new_ctx->fregs, (*lmf)->fregs, sizeof (double) * MONO_SAVED_FREGS);
+ frame->ji = ji;
+ frame->type = FRAME_TYPE_MANAGED_TO_NATIVE;
+
/* FIXME: what about trampoline LMF frames? see exceptions-x86.c */
*lmf = (*lmf)->previous_lmf;
- return ji ? ji : res;
+ return TRUE;
}
- return NULL;
+ return FALSE;
}
/*
void
mono_arch_sigctx_to_monoctx (void *ctx, MonoContext *mctx)
{
+#ifdef MONO_CROSS_COMPILE
+ g_assert_not_reached ();
+#else
os_ucontext *uc = ctx;
mctx->sc_ir = UCONTEXT_REG_NIP(uc);
mctx->sc_sp = UCONTEXT_REG_Rn(uc, 1);
- memcpy (&mctx->regs, &UCONTEXT_REG_Rn(uc, 13), sizeof (gulong) * MONO_SAVED_GREGS);
+ memcpy (&mctx->regs, &UCONTEXT_REG_Rn(uc, 13), sizeof (mgreg_t) * MONO_SAVED_GREGS);
memcpy (&mctx->fregs, &UCONTEXT_REG_FPRn(uc, 14), sizeof (double) * MONO_SAVED_FREGS);
+#endif
}
void
mono_arch_monoctx_to_sigctx (MonoContext *mctx, void *ctx)
{
+#ifdef MONO_CROSS_COMPILE
+ g_assert_not_reached ();
+#else
os_ucontext *uc = ctx;
UCONTEXT_REG_NIP(uc) = mctx->sc_ir;
UCONTEXT_REG_Rn(uc, 1) = mctx->sc_sp;
- memcpy (&UCONTEXT_REG_Rn(uc, 13), &mctx->regs, sizeof (gulong) * MONO_SAVED_GREGS);
+ memcpy (&UCONTEXT_REG_Rn(uc, 13), &mctx->regs, sizeof (mgreg_t) * MONO_SAVED_GREGS);
memcpy (&UCONTEXT_REG_FPRn(uc, 14), &mctx->fregs, sizeof (double) * MONO_SAVED_FREGS);
+#endif
}
gpointer
mono_arch_ip_from_context (void *sigctx)
{
+#ifdef MONO_CROSS_COMPILE
+ g_assert_not_reached ();
+#else
os_ucontext *uc = sigctx;
return (gpointer)UCONTEXT_REG_NIP(uc);
+#endif
+}
+
+void
+mono_ppc_set_func_into_sigctx (void *sigctx, void *func)
+{
+#ifdef MONO_CROSS_COMPILE
+ g_assert_not_reached ();
+#elif defined(PPC_USES_FUNCTION_DESCRIPTOR)
+ /* Have to set both the ip and the TOC reg */
+ os_ucontext *uc = sigctx;
+
+ UCONTEXT_REG_NIP(uc) = ((gsize*)func) [0];
+ UCONTEXT_REG_Rn (uc, 2) = ((gsize*)func)[1];
+#else
+ g_assert_not_reached ();
+#endif
}
static void
-altstack_handle_and_restore (void *sigctx, gpointer obj, gboolean test_only)
+altstack_handle_and_restore (void *sigctx, gpointer obj)
{
void (*restore_context) (MonoContext *);
MonoContext mctx;
- restore_context = mono_arch_get_restore_context ();
+ restore_context = mono_get_restore_context ();
mono_arch_sigctx_to_monoctx (sigctx, &mctx);
- mono_handle_exception (&mctx, obj, (gpointer)mctx.sc_ir, test_only);
+ mono_handle_exception (&mctx, obj);
restore_context (&mctx);
}
void
mono_arch_handle_altstack_exception (void *sigctx, gpointer fault_addr, gboolean stack_ovf)
{
+#ifdef MONO_CROSS_COMPILE
+ g_assert_not_reached ();
+#else
#ifdef MONO_ARCH_USE_SIGACTION
os_ucontext *uc = (ucontext_t*)sigctx;
os_ucontext *uc_copy;
- MonoJitInfo *ji = mono_jit_info_table_find (mono_domain_get (), mono_arch_ip_from_context (sigctx));
+ MonoJitInfo *ji = mini_jit_info_table_find (mono_domain_get (), mono_arch_ip_from_context (sigctx), NULL);
gpointer *sp;
int frame_size;
UCONTEXT_REG_Rn(uc, PPC_FIRST_ARG_REG + 1) = 0;
UCONTEXT_REG_Rn(uc, PPC_FIRST_ARG_REG + 2) = 0;
#endif
+
+#endif /* !MONO_CROSS_COMPILE */
+}
+
+/*
+ * handle_exception:
+ *
+ * Called by resuming from a signal handler.
+ */
+static void
+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);
+
+ restore_context (&ctx);
+}
+
+static void
+setup_ucontext_return (void *uc, gpointer func)
+{
+#if !defined(MONO_CROSS_COMPILE)
+ UCONTEXT_REG_LNK(uc) = UCONTEXT_REG_NIP(uc);
+#ifdef PPC_USES_FUNCTION_DESCRIPTOR
+ {
+ MonoPPCFunctionDescriptor *handler_ftnptr = (MonoPPCFunctionDescriptor*)func;
+
+ UCONTEXT_REG_NIP(uc) = (gulong)handler_ftnptr->code;
+ UCONTEXT_REG_Rn(uc, 2) = (gulong)handler_ftnptr->toc;
+ }
+#else
+ UCONTEXT_REG_NIP(uc) = (unsigned long)func;
+#endif
+#endif
}
gboolean
-mono_arch_handle_exception (void *ctx, gpointer obj, gboolean test_only)
+mono_arch_handle_exception (void *ctx, gpointer obj)
{
+#if defined(MONO_ARCH_USE_SIGACTION) && defined(UCONTEXT_REG_Rn)
+ /*
+ * Handling the exception in the signal handler is problematic, since the original
+ * 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 = mono_native_tls_get_value (mono_jit_tls_id);
+ mgreg_t sp;
+ void *sigctx = ctx;
+ int frame_size;
+ void *uc = sigctx;
+
+ /* Pass the ctx parameter in TLS */
+ mono_arch_sigctx_to_monoctx (sigctx, &jit_tls->ex_ctx);
+ /* The others in registers */
+ UCONTEXT_REG_Rn (sigctx, PPC_FIRST_ARG_REG) = (gsize)obj;
+
+ /* Allocate a stack frame below the red zone */
+ /* Similar to mono_arch_handle_altstack_exception () */
+ frame_size = 224;
+ frame_size += 15;
+ frame_size &= ~15;
+ sp = (mgreg_t)(UCONTEXT_REG_Rn(uc, 1) & ~15);
+ sp = (mgreg_t)(sp - frame_size);
+ UCONTEXT_REG_Rn(uc, 1) = (mgreg_t)sp;
+ setup_ucontext_return (uc, handle_signal_exception);
+
+ return TRUE;
+#else
MonoContext mctx;
gboolean result;
mono_arch_sigctx_to_monoctx (ctx, &mctx);
- result = mono_handle_exception (&mctx, obj, (gpointer)mctx.sc_ir, test_only);
+ result = mono_handle_exception (&mctx, obj);
/* restore the context so that returning from the signal handler will invoke
* the catch clause
*/
mono_arch_monoctx_to_sigctx (&mctx, ctx);
return result;
+#endif
}
-
-gboolean
-mono_arch_has_unwind_info (gconstpointer addr)
-{
- return FALSE;
-}
-
projects / mono.git / blobdiff