diff options
Diffstat (limited to 'gdb/mips-tdep.c')
| -rw-r--r-- | gdb/mips-tdep.c | 275 |
1 files changed, 136 insertions, 139 deletions
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c index ebb216ff25b..eb50a9d89d0 100644 --- a/gdb/mips-tdep.c +++ b/gdb/mips-tdep.c @@ -887,19 +887,19 @@ mips_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) (next_frame, gdbarch_num_regs (gdbarch) + MIPS_SP_REGNUM); } -/* Assuming NEXT_FRAME->prev is a dummy, return the frame ID of that +/* Assuming THIS_FRAME is a dummy, return the frame ID of that dummy frame. The frame ID's base needs to match the TOS value saved by save_dummy_frame_tos(), and the PC match the dummy frame's breakpoint. */ static struct frame_id -mips_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame) +mips_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) { return frame_id_build - (frame_unwind_register_signed (next_frame, - gdbarch_num_regs (gdbarch) - + MIPS_SP_REGNUM), - frame_pc_unwind (next_frame)); + (get_frame_register_signed (this_frame, + gdbarch_num_regs (gdbarch) + + MIPS_SP_REGNUM), + get_frame_pc (this_frame)); } static void @@ -1488,7 +1488,7 @@ mips16_get_imm (unsigned short prev_inst, /* previous instruction */ static CORE_ADDR mips16_scan_prologue (CORE_ADDR start_pc, CORE_ADDR limit_pc, - struct frame_info *next_frame, + struct frame_info *this_frame, struct mips_frame_cache *this_cache) { CORE_ADDR cur_pc; @@ -1506,14 +1506,14 @@ mips16_scan_prologue (CORE_ADDR start_pc, CORE_ADDR limit_pc, int extend_bytes = 0; int prev_extend_bytes; CORE_ADDR end_prologue_addr = 0; - struct gdbarch *gdbarch = get_frame_arch (next_frame); + struct gdbarch *gdbarch = get_frame_arch (this_frame); /* Can be called when there's no process, and hence when there's no - NEXT_FRAME. */ - if (next_frame != NULL) - sp = frame_unwind_register_signed (next_frame, - gdbarch_num_regs (gdbarch) - + MIPS_SP_REGNUM); + THIS_FRAME. */ + if (this_frame != NULL) + sp = get_frame_register_signed (this_frame, + gdbarch_num_regs (gdbarch) + + MIPS_SP_REGNUM); else sp = 0; @@ -1766,8 +1766,8 @@ mips16_scan_prologue (CORE_ADDR start_pc, CORE_ADDR limit_pc, if (this_cache != NULL) { this_cache->base = - (frame_unwind_register_signed (next_frame, - gdbarch_num_regs (gdbarch) + frame_reg) + (get_frame_register_signed (this_frame, + gdbarch_num_regs (gdbarch) + frame_reg) + frame_offset - frame_adjust); /* FIXME: brobecker/2004-10-10: Just as in the mips32 case, we should be able to get rid of the assignment below, evetually. But it's @@ -1791,7 +1791,7 @@ mips16_scan_prologue (CORE_ADDR start_pc, CORE_ADDR limit_pc, mips_insn32 unwinder. */ static struct mips_frame_cache * -mips_insn16_frame_cache (struct frame_info *next_frame, void **this_cache) +mips_insn16_frame_cache (struct frame_info *this_frame, void **this_cache) { struct mips_frame_cache *cache; @@ -1799,12 +1799,11 @@ mips_insn16_frame_cache (struct frame_info *next_frame, void **this_cache) return (*this_cache); cache = FRAME_OBSTACK_ZALLOC (struct mips_frame_cache); (*this_cache) = cache; - cache->saved_regs = trad_frame_alloc_saved_regs (next_frame); + cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); /* Analyze the function prologue. */ { - const CORE_ADDR pc = - frame_unwind_address_in_block (next_frame, NORMAL_FRAME); + const CORE_ADDR pc = get_frame_address_in_block (this_frame); CORE_ADDR start_addr; find_pc_partial_function (pc, NULL, &start_addr, NULL); @@ -1815,62 +1814,60 @@ mips_insn16_frame_cache (struct frame_info *next_frame, void **this_cache) if (start_addr == 0) return cache; - mips16_scan_prologue (start_addr, pc, next_frame, *this_cache); + mips16_scan_prologue (start_addr, pc, this_frame, *this_cache); } /* gdbarch_sp_regnum contains the value and not the address. */ trad_frame_set_value (cache->saved_regs, - gdbarch_num_regs (get_frame_arch (next_frame)) - + MIPS_SP_REGNUM, + gdbarch_num_regs (get_frame_arch (this_frame)) + + MIPS_SP_REGNUM, cache->base); return (*this_cache); } static void -mips_insn16_frame_this_id (struct frame_info *next_frame, void **this_cache, +mips_insn16_frame_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { - struct mips_frame_cache *info = mips_insn16_frame_cache (next_frame, + struct mips_frame_cache *info = mips_insn16_frame_cache (this_frame, this_cache); - (*this_id) = frame_id_build (info->base, - frame_func_unwind (next_frame, NORMAL_FRAME)); + (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); } -static void -mips_insn16_frame_prev_register (struct frame_info *next_frame, - void **this_cache, - int regnum, int *optimizedp, - enum lval_type *lvalp, CORE_ADDR *addrp, - int *realnump, gdb_byte *valuep) +static struct value * +mips_insn16_frame_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum) { - struct mips_frame_cache *info = mips_insn16_frame_cache (next_frame, + struct mips_frame_cache *info = mips_insn16_frame_cache (this_frame, this_cache); - trad_frame_get_prev_register (next_frame, info->saved_regs, regnum, - optimizedp, lvalp, addrp, realnump, valuep); + return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); +} + +static int +mips_insn16_frame_sniffer (const struct frame_unwind *self, + struct frame_info *this_frame, void **this_cache) +{ + CORE_ADDR pc = get_frame_pc (this_frame); + if (mips_pc_is_mips16 (pc)) + return 1; + return 0; } static const struct frame_unwind mips_insn16_frame_unwind = { NORMAL_FRAME, mips_insn16_frame_this_id, - mips_insn16_frame_prev_register + mips_insn16_frame_prev_register, + NULL, + mips_insn16_frame_sniffer }; -static const struct frame_unwind * -mips_insn16_frame_sniffer (struct frame_info *next_frame) -{ - CORE_ADDR pc = frame_pc_unwind (next_frame); - if (mips_pc_is_mips16 (pc)) - return &mips_insn16_frame_unwind; - return NULL; -} - static CORE_ADDR -mips_insn16_frame_base_address (struct frame_info *next_frame, +mips_insn16_frame_base_address (struct frame_info *this_frame, void **this_cache) { - struct mips_frame_cache *info = mips_insn16_frame_cache (next_frame, + struct mips_frame_cache *info = mips_insn16_frame_cache (this_frame, this_cache); return info->base; } @@ -1884,9 +1881,10 @@ static const struct frame_base mips_insn16_frame_base = }; static const struct frame_base * -mips_insn16_frame_base_sniffer (struct frame_info *next_frame) +mips_insn16_frame_base_sniffer (struct frame_info *this_frame) { - if (mips_insn16_frame_sniffer (next_frame) != NULL) + CORE_ADDR pc = get_frame_pc (this_frame); + if (mips_pc_is_mips16 (pc)) return &mips_insn16_frame_base; else return NULL; @@ -1918,7 +1916,7 @@ reset_saved_regs (struct mips_frame_cache *this_cache) static CORE_ADDR mips32_scan_prologue (CORE_ADDR start_pc, CORE_ADDR limit_pc, - struct frame_info *next_frame, + struct frame_info *this_frame, struct mips_frame_cache *this_cache) { CORE_ADDR cur_pc; @@ -1930,15 +1928,15 @@ mips32_scan_prologue (CORE_ADDR start_pc, CORE_ADDR limit_pc, CORE_ADDR end_prologue_addr = 0; int seen_sp_adjust = 0; int load_immediate_bytes = 0; - struct gdbarch *gdbarch = get_frame_arch (next_frame); + struct gdbarch *gdbarch = get_frame_arch (this_frame); int regsize_is_64_bits = (mips_abi_regsize (gdbarch) == 8); /* Can be called when there's no process, and hence when there's no - NEXT_FRAME. */ - if (next_frame != NULL) - sp = frame_unwind_register_signed (next_frame, - gdbarch_num_regs (gdbarch) - + MIPS_SP_REGNUM); + THIS_FRAME. */ + if (this_frame != NULL) + sp = get_frame_register_signed (this_frame, + gdbarch_num_regs (gdbarch) + + MIPS_SP_REGNUM); else sp = 0; @@ -1990,13 +1988,13 @@ restart: /* Old gcc frame, r30 is virtual frame pointer. */ if ((long) low_word != frame_offset) frame_addr = sp + low_word; - else if (next_frame && frame_reg == MIPS_SP_REGNUM) + else if (this_frame && frame_reg == MIPS_SP_REGNUM) { unsigned alloca_adjust; frame_reg = 30; - frame_addr = frame_unwind_register_signed - (next_frame, gdbarch_num_regs (gdbarch) + 30); + frame_addr = get_frame_register_signed + (this_frame, gdbarch_num_regs (gdbarch) + 30); alloca_adjust = (unsigned) (frame_addr - (sp + low_word)); if (alloca_adjust > 0) @@ -2020,13 +2018,13 @@ restart: else if (inst == 0x03A0F021 || inst == 0x03a0f025 || inst == 0x03a0f02d) { /* New gcc frame, virtual frame pointer is at r30 + frame_size. */ - if (next_frame && frame_reg == MIPS_SP_REGNUM) + if (this_frame && frame_reg == MIPS_SP_REGNUM) { unsigned alloca_adjust; frame_reg = 30; - frame_addr = frame_unwind_register_signed - (next_frame, gdbarch_num_regs (gdbarch) + 30); + frame_addr = get_frame_register_signed + (this_frame, gdbarch_num_regs (gdbarch) + 30); alloca_adjust = (unsigned) (frame_addr - sp); if (alloca_adjust > 0) @@ -2093,8 +2091,8 @@ restart: if (this_cache != NULL) { this_cache->base = - (frame_unwind_register_signed (next_frame, - gdbarch_num_regs (gdbarch) + frame_reg) + (get_frame_register_signed (this_frame, + gdbarch_num_regs (gdbarch) + frame_reg) + frame_offset); /* FIXME: brobecker/2004-09-15: We should be able to get rid of this assignment below, eventually. But it's still needed @@ -2129,7 +2127,7 @@ restart: unwinder. */ static struct mips_frame_cache * -mips_insn32_frame_cache (struct frame_info *next_frame, void **this_cache) +mips_insn32_frame_cache (struct frame_info *this_frame, void **this_cache) { struct mips_frame_cache *cache; @@ -2138,12 +2136,11 @@ mips_insn32_frame_cache (struct frame_info *next_frame, void **this_cache) cache = FRAME_OBSTACK_ZALLOC (struct mips_frame_cache); (*this_cache) = cache; - cache->saved_regs = trad_frame_alloc_saved_regs (next_frame); + cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); /* Analyze the function prologue. */ { - const CORE_ADDR pc = - frame_unwind_address_in_block (next_frame, NORMAL_FRAME); + const CORE_ADDR pc = get_frame_address_in_block (this_frame); CORE_ADDR start_addr; find_pc_partial_function (pc, NULL, &start_addr, NULL); @@ -2154,62 +2151,60 @@ mips_insn32_frame_cache (struct frame_info *next_frame, void **this_cache) if (start_addr == 0) return cache; - mips32_scan_prologue (start_addr, pc, next_frame, *this_cache); + mips32_scan_prologue (start_addr, pc, this_frame, *this_cache); } /* gdbarch_sp_regnum contains the value and not the address. */ trad_frame_set_value (cache->saved_regs, - gdbarch_num_regs (get_frame_arch (next_frame)) - + MIPS_SP_REGNUM, + gdbarch_num_regs (get_frame_arch (this_frame)) + + MIPS_SP_REGNUM, cache->base); return (*this_cache); } static void -mips_insn32_frame_this_id (struct frame_info *next_frame, void **this_cache, +mips_insn32_frame_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { - struct mips_frame_cache *info = mips_insn32_frame_cache (next_frame, + struct mips_frame_cache *info = mips_insn32_frame_cache (this_frame, this_cache); - (*this_id) = frame_id_build (info->base, - frame_func_unwind (next_frame, NORMAL_FRAME)); + (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); } -static void -mips_insn32_frame_prev_register (struct frame_info *next_frame, - void **this_cache, - int regnum, int *optimizedp, - enum lval_type *lvalp, CORE_ADDR *addrp, - int *realnump, gdb_byte *valuep) +static struct value * +mips_insn32_frame_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum) { - struct mips_frame_cache *info = mips_insn32_frame_cache (next_frame, + struct mips_frame_cache *info = mips_insn32_frame_cache (this_frame, this_cache); - trad_frame_get_prev_register (next_frame, info->saved_regs, regnum, - optimizedp, lvalp, addrp, realnump, valuep); + return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); +} + +static int +mips_insn32_frame_sniffer (const struct frame_unwind *self, + struct frame_info *this_frame, void **this_cache) +{ + CORE_ADDR pc = get_frame_pc (this_frame); + if (! mips_pc_is_mips16 (pc)) + return 1; + return 0; } static const struct frame_unwind mips_insn32_frame_unwind = { NORMAL_FRAME, mips_insn32_frame_this_id, - mips_insn32_frame_prev_register + mips_insn32_frame_prev_register, + NULL, + mips_insn32_frame_sniffer }; -static const struct frame_unwind * -mips_insn32_frame_sniffer (struct frame_info *next_frame) -{ - CORE_ADDR pc = frame_pc_unwind (next_frame); - if (! mips_pc_is_mips16 (pc)) - return &mips_insn32_frame_unwind; - return NULL; -} - static CORE_ADDR -mips_insn32_frame_base_address (struct frame_info *next_frame, +mips_insn32_frame_base_address (struct frame_info *this_frame, void **this_cache) { - struct mips_frame_cache *info = mips_insn32_frame_cache (next_frame, + struct mips_frame_cache *info = mips_insn32_frame_cache (this_frame, this_cache); return info->base; } @@ -2223,38 +2218,41 @@ static const struct frame_base mips_insn32_frame_base = }; static const struct frame_base * -mips_insn32_frame_base_sniffer (struct frame_info *next_frame) +mips_insn32_frame_base_sniffer (struct frame_info *this_frame) { - if (mips_insn32_frame_sniffer (next_frame) != NULL) + CORE_ADDR pc = get_frame_pc (this_frame); + if (! mips_pc_is_mips16 (pc)) return &mips_insn32_frame_base; else return NULL; } static struct trad_frame_cache * -mips_stub_frame_cache (struct frame_info *next_frame, void **this_cache) +mips_stub_frame_cache (struct frame_info *this_frame, void **this_cache) { CORE_ADDR pc; CORE_ADDR start_addr; CORE_ADDR stack_addr; struct trad_frame_cache *this_trad_cache; - struct gdbarch *gdbarch = get_frame_arch (next_frame); + struct gdbarch *gdbarch = get_frame_arch (this_frame); + int num_regs = gdbarch_num_regs (gdbarch); if ((*this_cache) != NULL) return (*this_cache); - this_trad_cache = trad_frame_cache_zalloc (next_frame); + this_trad_cache = trad_frame_cache_zalloc (this_frame); (*this_cache) = this_trad_cache; /* The return address is in the link register. */ trad_frame_set_reg_realreg (this_trad_cache, gdbarch_pc_regnum (gdbarch), - (gdbarch_num_regs (gdbarch) + MIPS_RA_REGNUM)); + num_regs + MIPS_RA_REGNUM); /* Frame ID, since it's a frameless / stackless function, no stack space is allocated and SP on entry is the current SP. */ - pc = frame_pc_unwind (next_frame); + pc = get_frame_pc (this_frame); find_pc_partial_function (pc, NULL, &start_addr, NULL); - stack_addr = frame_unwind_register_signed (next_frame, MIPS_SP_REGNUM); + stack_addr = get_frame_register_signed (this_frame, + num_regs + MIPS_SP_REGNUM); trad_frame_set_id (this_trad_cache, frame_id_build (stack_addr, start_addr)); /* Assume that the frame's base is the same as the @@ -2265,47 +2263,37 @@ mips_stub_frame_cache (struct frame_info *next_frame, void **this_cache) } static void -mips_stub_frame_this_id (struct frame_info *next_frame, void **this_cache, +mips_stub_frame_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { struct trad_frame_cache *this_trad_cache - = mips_stub_frame_cache (next_frame, this_cache); + = mips_stub_frame_cache (this_frame, this_cache); trad_frame_get_id (this_trad_cache, this_id); } -static void -mips_stub_frame_prev_register (struct frame_info *next_frame, - void **this_cache, - int regnum, int *optimizedp, - enum lval_type *lvalp, CORE_ADDR *addrp, - int *realnump, gdb_byte *valuep) +static struct value * +mips_stub_frame_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum) { struct trad_frame_cache *this_trad_cache - = mips_stub_frame_cache (next_frame, this_cache); - trad_frame_get_register (this_trad_cache, next_frame, regnum, optimizedp, - lvalp, addrp, realnump, valuep); + = mips_stub_frame_cache (this_frame, this_cache); + return trad_frame_get_register (this_trad_cache, this_frame, regnum); } -static const struct frame_unwind mips_stub_frame_unwind = -{ - NORMAL_FRAME, - mips_stub_frame_this_id, - mips_stub_frame_prev_register -}; - -static const struct frame_unwind * -mips_stub_frame_sniffer (struct frame_info *next_frame) +static int +mips_stub_frame_sniffer (const struct frame_unwind *self, + struct frame_info *this_frame, void **this_cache) { gdb_byte dummy[4]; struct obj_section *s; - CORE_ADDR pc = frame_unwind_address_in_block (next_frame, NORMAL_FRAME); + CORE_ADDR pc = get_frame_address_in_block (this_frame); /* Use the stub unwinder for unreadable code. */ - if (target_read_memory (frame_pc_unwind (next_frame), dummy, 4) != 0) - return &mips_stub_frame_unwind; + if (target_read_memory (get_frame_pc (this_frame), dummy, 4) != 0) + return 1; if (in_plt_section (pc, NULL)) - return &mips_stub_frame_unwind; + return 1; /* Binutils for MIPS puts lazy resolution stubs into .MIPS.stubs. */ s = find_pc_section (pc); @@ -2313,17 +2301,26 @@ mips_stub_frame_sniffer (struct frame_info *next_frame) if (s != NULL && strcmp (bfd_get_section_name (s->objfile->obfd, s->the_bfd_section), ".MIPS.stubs") == 0) - return &mips_stub_frame_unwind; + return 1; - return NULL; + return 0; } +static const struct frame_unwind mips_stub_frame_unwind = +{ + NORMAL_FRAME, + mips_stub_frame_this_id, + mips_stub_frame_prev_register, + NULL, + mips_stub_frame_sniffer +}; + static CORE_ADDR -mips_stub_frame_base_address (struct frame_info *next_frame, +mips_stub_frame_base_address (struct frame_info *this_frame, void **this_cache) { struct trad_frame_cache *this_trad_cache - = mips_stub_frame_cache (next_frame, this_cache); + = mips_stub_frame_cache (this_frame, this_cache); return trad_frame_get_this_base (this_trad_cache); } @@ -2336,9 +2333,9 @@ static const struct frame_base mips_stub_frame_base = }; static const struct frame_base * -mips_stub_frame_base_sniffer (struct frame_info *next_frame) +mips_stub_frame_base_sniffer (struct frame_info *this_frame) { - if (mips_stub_frame_sniffer (next_frame) != NULL) + if (mips_stub_frame_sniffer (&mips_stub_frame_unwind, this_frame, NULL)) return &mips_stub_frame_base; else return NULL; @@ -5778,7 +5775,7 @@ mips_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) /* Unwind the frame. */ set_gdbarch_unwind_pc (gdbarch, mips_unwind_pc); set_gdbarch_unwind_sp (gdbarch, mips_unwind_sp); - set_gdbarch_unwind_dummy_id (gdbarch, mips_unwind_dummy_id); + set_gdbarch_dummy_id (gdbarch, mips_dummy_id); /* Map debug register numbers onto internal register numbers. */ set_gdbarch_stab_reg_to_regnum (gdbarch, mips_stab_reg_to_regnum); @@ -5841,10 +5838,10 @@ mips_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) gdbarch_init_osabi (info, gdbarch); /* Unwind the frame. */ - frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer); - frame_unwind_append_sniffer (gdbarch, mips_stub_frame_sniffer); - frame_unwind_append_sniffer (gdbarch, mips_insn16_frame_sniffer); - frame_unwind_append_sniffer (gdbarch, mips_insn32_frame_sniffer); + dwarf2_append_unwinders (gdbarch); + frame_unwind_append_unwinder (gdbarch, &mips_stub_frame_unwind); + frame_unwind_append_unwinder (gdbarch, &mips_insn16_frame_unwind); + frame_unwind_append_unwinder (gdbarch, &mips_insn32_frame_unwind); frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer); frame_base_append_sniffer (gdbarch, mips_stub_frame_base_sniffer); frame_base_append_sniffer (gdbarch, mips_insn16_frame_base_sniffer); 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