X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmini%2Fexceptions-ppc.c;h=6e9202be32bf387d2bfefc272931d43029c5bdfd;hb=fc972fa3fc13e3f3957a082a4cfa631498b3e3ca;hp=b6b8c89f86c64b486be00a3d99f6f96d89c3c9d5;hpb=5cf7ad2307b8d94c0bcb9df3204ef330d038e134;p=mono.git diff --git a/mono/mini/exceptions-ppc.c b/mono/mini/exceptions-ppc.c index b6b8c89f86c..6e9202be32b 100644 --- a/mono/mini/exceptions-ppc.c +++ b/mono/mini/exceptions-ppc.c @@ -4,8 +4,10 @@ * Authors: * Dietmar Maurer (dietmar@ximian.com) * Paolo Molaro (lupus@ximian.com) + * Andreas Faerber * * (C) 2001 Ximian, Inc. + * (C) 2007-2008 Andreas Faerber */ #include @@ -13,7 +15,9 @@ #include #include #include +#if HAVE_UCONTEXT_H #include +#endif #include #include @@ -159,16 +163,32 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; #define restore_regs_from_context(ctx_reg,ip_reg,tmp_reg) do { \ int reg; \ - ppc_lwz (code, ip_reg, G_STRUCT_OFFSET (MonoContext, sc_ir), ctx_reg); \ - ppc_lmw (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(MonoLMF, fregs) + reg * sizeof (gdouble), ctx_reg); \ + ppc_lfd (code, (14 + reg), \ + G_STRUCT_OFFSET(MonoContext, fregs) + reg * sizeof (gdouble), ctx_reg); \ } \ } while (0) /* nothing to do */ #define setup_context(ctx) +#ifdef PPC_USES_FUNCTION_DESCRIPTOR +guint8* +mono_ppc_create_pre_code_ftnptr (guint8 *code) +{ + MonoPPCFunctionDescriptor *ftnptr = (MonoPPCFunctionDescriptor*)code; + + code += sizeof (MonoPPCFunctionDescriptor); + ftnptr->code = code; + ftnptr->toc = NULL; + ftnptr->env = NULL; + + return code; +} +#endif + /* * arch_get_restore_context: * @@ -176,18 +196,18 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; * The first argument in r3 is the pointer to the context. */ gpointer -mono_arch_get_restore_context (void) +mono_arch_get_restore_context_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot) { - guint8 *code; - static guint8 *start = NULL; + guint8 *start, *code; + int size = MONO_PPC_32_64_CASE (128, 172) + PPC_FTNPTR_SIZE; - if (start) - return start; - - code = start = mono_global_codeman_reserve (128); + code = start = mono_global_codeman_reserve (size); + *ji = NULL; + 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_lwz (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); @@ -195,11 +215,35 @@ mono_arch_get_restore_context (void) /* never reached */ ppc_break (code); - g_assert ((code - start) < 128); + g_assert ((code - start) <= size); mono_arch_flush_icache (start, code - start); + + *code_size = code - start; + 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; +} + /* * mono_arch_get_call_filter: * @@ -208,40 +252,32 @@ mono_arch_get_restore_context (void) * @exc object in this case). */ gpointer -mono_arch_get_call_filter (void) +mono_arch_get_call_filter_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot) { - static guint8 *start = NULL; - guint8 *code; + guint8 *start, *code; int alloc_size, pos, i; + int size = MONO_PPC_32_64_CASE (320, 500) + PPC_FTNPTR_SIZE; - if (start) - return start; + *ji = NULL; /* call_filter (MonoContext *ctx, unsigned long eip, gpointer exc) */ - code = start = mono_global_codeman_reserve (320); - - /* 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_stmw (code, ppc_r13, ppc_sp, -pos); + code = start = mono_global_codeman_reserve (size); + if (!aot) + code = mono_ppc_create_pre_code_ftnptr (code); + /* store ret addr */ ppc_mflr (code, ppc_r0); - ppc_stw (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 PPC_STACK_ALIGNMENT bytes - alloc_size += PPC_STACK_ALIGNMENT - 1; - alloc_size &= ~(PPC_STACK_ALIGNMENT - 1); + alloc_size = REG_SAVE_STACK_FRAME_SIZE; /* allocate stack frame and set link from sp in ctx */ - g_assert ((alloc_size & (PPC_STACK_ALIGNMENT-1)) == 0); - ppc_lwz (code, ppc_r0, G_STRUCT_OFFSET (MonoContext, sc_sp), ppc_r3); - ppc_lwzx (code, ppc_r0, ppc_r0, ppc_r0); - ppc_stwu (code, ppc_r0, -alloc_size, ppc_sp); + g_assert ((alloc_size & (MONO_ARCH_FRAME_ALIGNMENT-1)) == 0); + 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); @@ -251,34 +287,37 @@ mono_arch_get_call_filter (void) ppc_bcctrl (code, PPC_BR_ALWAYS, 0); /* epilog */ - ppc_lwz (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_lmw (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) < 320); + g_assert ((code - start) < size); mono_arch_flush_icache (start, code - start); + + *code_size = code - start; + 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; @@ -288,7 +327,7 @@ throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, gulong * /*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)) { @@ -308,70 +347,97 @@ throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, gulong * * 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, guint32 *code_size, MonoJumpInfo **ji, int corlib, gboolean rethrow, gboolean aot) { - guint8 *code; - int alloc_size, pos, i; + guint8 *start, *code; + int alloc_size, pos; - code = start; + *ji = NULL; - /* 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_stmw (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_stw (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); + + alloc_size = REG_SAVE_STACK_FRAME_SIZE; - alloc_size = PPC_MINIMAL_STACK_SIZE + pos + 64; - // align to PPC_STACK_ALIGNMENT bytes - alloc_size += PPC_STACK_ALIGNMENT - 1; - alloc_size &= ~(PPC_STACK_ALIGNMENT - 1); + g_assert ((alloc_size & (MONO_ARCH_FRAME_ALIGNMENT-1)) == 0); + ppc_stptr_update (code, ppc_sp, -alloc_size, ppc_sp); - g_assert ((alloc_size & (PPC_STACK_ALIGNMENT-1)) == 0); - ppc_stwu (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, (guint32)mono_defaults.corlib); - ppc_load (code, ppc_r4, "System"); - ppc_load (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_lwz (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_lwz (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 (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); + + *code_size = code - start; + return start; } @@ -384,18 +450,15 @@ mono_arch_get_throw_exception_generic (guint8 *start, int size, int by_name, gbo * */ gpointer -mono_arch_get_rethrow_exception (void) +mono_arch_get_rethrow_exception_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot) { - static guint8 *start = NULL; - static int inited = 0; - - if (inited) - return start; - start = mono_global_codeman_reserve (132); - mono_arch_get_throw_exception_generic (start, 132, FALSE, TRUE); - inited = 1; - return start; + int size = MONO_PPC_32_64_CASE (132, 224) + PPC_FTNPTR_SIZE; + + if (aot) + size += 64; + return mono_arch_get_throw_exception_generic (size, code_size, ji, FALSE, TRUE, aot); } + /** * arch_get_throw_exception: * @@ -408,18 +471,14 @@ mono_arch_get_rethrow_exception (void) * x86_call_code (code, arch_get_throw_exception ()); * */ -gpointer -mono_arch_get_throw_exception (void) +gpointer +mono_arch_get_throw_exception_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot) { - static guint8 *start = NULL; - static int inited = 0; - - if (inited) - return start; - start = mono_global_codeman_reserve (132); - mono_arch_get_throw_exception_generic (start, 132, FALSE, FALSE); - inited = 1; - return start; + int size = MONO_PPC_32_64_CASE (132, 224) + PPC_FTNPTR_SIZE; + + if (aot) + size += 64; + return mono_arch_get_throw_exception_generic (size, code_size, ji, FALSE, FALSE, aot); } /** @@ -434,123 +493,122 @@ mono_arch_get_throw_exception (void) * x86_call_code (code, arch_get_throw_exception_by_name ()); * */ -gpointer -mono_arch_get_throw_exception_by_name (void) -{ - static guint8 *start = NULL; - static int inited = 0; - - if (inited) - return start; - start = mono_global_codeman_reserve (168); - mono_arch_get_throw_exception_generic (start, 168, TRUE, FALSE); - inited = 1; - return start; -} - -static MonoArray * -glist_to_array (GList *list, MonoClass *eclass) +gpointer +mono_arch_get_throw_exception_by_name_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot) { - MonoDomain *domain = mono_domain_get (); - MonoArray *res; - int len, i; + guint8 *start, *code; + int size = 64; - if (!list) - return NULL; + *ji = NULL; - len = g_list_length (list); - res = mono_array_new (domain, eclass, len); + /* Not used on PPC */ + start = code = mono_global_codeman_reserve (size); + ppc_break (code); + mono_arch_flush_icache (start, code - start); + *code_size = code - start; + return start; +} - for (i = 0; list; list = list->next, i++) - mono_array_set (res, gpointer, i, list->data); +/** + * 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) (guint32 ex_token, guint32 offset); + * On PPC, we pass the ip instead of the offset + */ +gpointer +mono_arch_get_throw_corlib_exception_full (guint32 *code_size, MonoJumpInfo **ji, gboolean aot) +{ + int size = MONO_PPC_32_64_CASE (168, 304) + PPC_FTNPTR_SIZE; - return res; + if (aot) + size += 64; + return mono_arch_get_throw_exception_generic (size, code_size, ji, TRUE, FALSE, aot); } -/* mono_arch_find_jit_info: +/* + * mono_arch_find_jit_info_ext: * - * 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_ext (MonoDomain *domain, MonoJitTlsData *jit_tls, + MonoJitInfo *ji, MonoContext *ctx, + MonoContext *new_ctx, MonoLMF **lmf, + 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; + frame->managed = FALSE; - if (managed) - *managed = FALSE; + *new_ctx = *ctx; + setup_context (new_ctx); if (ji != NULL) { - gint32 address; - int offset, i; - - *new_ctx = *ctx; - setup_context (new_ctx); + int i; + gssize regs [ppc_lr + 1]; + guint8 *cfa; + guint32 unwind_info_len; + guint8 *unwind_info; - if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->ebp)) { - /* remove any unused lmf */ - *lmf = (*lmf)->previous_lmf; - } + frame->type = FRAME_TYPE_MANAGED; - address = (char *)ip - (char *)ji->code_start; + if (!ji->method->wrapper_type || ji->method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD) + frame->managed = TRUE; - 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, MONO_MAX_IREGS + 1, &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]; } - /* 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; + if (*lmf && (MONO_CONTEXT_GET_SP (ctx) >= (gpointer)(*lmf)->ebp)) { + /* remove any unused lmf */ + *lmf = (*lmf)->previous_lmf; + } + + 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); @@ -558,17 +616,20 @@ mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, MonoJitInf 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; } /* @@ -577,40 +638,51 @@ mono_arch_find_jit_info (MonoDomain *domain, MonoJitTlsData *jit_tls, MonoJitInf 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 } -#ifndef __APPLE__ static void altstack_handle_and_restore (void *sigctx, gpointer obj, gboolean test_only) { 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); restore_context (&mctx); @@ -619,10 +691,13 @@ altstack_handle_and_restore (void *sigctx, gpointer obj, gboolean test_only) 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 - ucontext_t *uc = (ucontext_t*)sigctx; - ucontext_t *uc_copy; - MonoJitInfo *ji = mono_jit_info_table_find (mono_domain_get (), mono_arch_ip_from_context (sigctx)); + os_ucontext *uc = (ucontext_t*)sigctx; + os_ucontext *uc_copy; + MonoJitInfo *ji = mini_jit_info_table_find (mono_domain_get (), mono_arch_ip_from_context (sigctx), NULL); gpointer *sp; int frame_size; @@ -654,21 +729,30 @@ mono_arch_handle_altstack_exception (void *sigctx, gpointer fault_addr, gboolean /* may need to adjust pointers in the new struct copy, depending on the OS */ uc_copy = (ucontext_t*)(sp + 16); memcpy (uc_copy, uc, sizeof (os_ucontext)); -#ifdef __linux__ +#if defined(__linux__) && !defined(__mono_ppc64__) uc_copy->uc_mcontext.uc_regs = (gpointer)((char*)uc_copy + ((char*)uc->uc_mcontext.uc_regs - (char*)uc)); #endif g_assert (mono_arch_ip_from_context (uc) == mono_arch_ip_from_context (uc_copy)); /* at the return form the signal handler execution starts in altstack_handle_and_restore() */ UCONTEXT_REG_LNK(uc) = UCONTEXT_REG_NIP(uc); +#ifdef PPC_USES_FUNCTION_DESCRIPTOR + { + MonoPPCFunctionDescriptor *handler_ftnptr = (MonoPPCFunctionDescriptor*)altstack_handle_and_restore; + + UCONTEXT_REG_NIP(uc) = (gulong)handler_ftnptr->code; + UCONTEXT_REG_Rn(uc, 2) = (gulong)handler_ftnptr->toc; + } +#else UCONTEXT_REG_NIP(uc) = (unsigned long)altstack_handle_and_restore; +#endif UCONTEXT_REG_Rn(uc, 1) = (unsigned long)sp; UCONTEXT_REG_Rn(uc, PPC_FIRST_ARG_REG) = (unsigned long)(sp + 16); UCONTEXT_REG_Rn(uc, PPC_FIRST_ARG_REG + 1) = 0; UCONTEXT_REG_Rn(uc, PPC_FIRST_ARG_REG + 2) = 0; #endif -} -#endif +#endif /* !MONO_CROSS_COMPILE */ +} gboolean mono_arch_handle_exception (void *ctx, gpointer obj, gboolean test_only)