diff options
Diffstat (limited to 'gdb/cris-tdep.c')
| -rw-r--r-- | gdb/cris-tdep.c | 193 |
1 files changed, 90 insertions, 103 deletions
diff --git a/gdb/cris-tdep.c b/gdb/cris-tdep.c index 44f94dd..12ef149 100644 --- a/gdb/cris-tdep.c +++ b/gdb/cris-tdep.c @@ -215,12 +215,12 @@ static const unsigned short rt_sigtramp_code[] = the routine. Otherwise, return 0. */ static CORE_ADDR -cris_sigtramp_start (struct frame_info *next_frame) +cris_sigtramp_start (struct frame_info *this_frame) { - CORE_ADDR pc = frame_pc_unwind (next_frame); + CORE_ADDR pc = get_frame_pc (this_frame); gdb_byte buf[SIGTRAMP_LEN]; - if (!safe_frame_unwind_memory (next_frame, pc, buf, SIGTRAMP_LEN)) + if (!safe_frame_unwind_memory (this_frame, pc, buf, SIGTRAMP_LEN)) return 0; if (((buf[1] << 8) + buf[0]) != SIGTRAMP_INSN0) @@ -229,7 +229,7 @@ cris_sigtramp_start (struct frame_info *next_frame) return 0; pc -= SIGTRAMP_OFFSET1; - if (!safe_frame_unwind_memory (next_frame, pc, buf, SIGTRAMP_LEN)) + if (!safe_frame_unwind_memory (this_frame, pc, buf, SIGTRAMP_LEN)) return 0; } @@ -243,12 +243,12 @@ cris_sigtramp_start (struct frame_info *next_frame) the routine. Otherwise, return 0. */ static CORE_ADDR -cris_rt_sigtramp_start (struct frame_info *next_frame) +cris_rt_sigtramp_start (struct frame_info *this_frame) { - CORE_ADDR pc = frame_pc_unwind (next_frame); + CORE_ADDR pc = get_frame_pc (this_frame); gdb_byte buf[SIGTRAMP_LEN]; - if (!safe_frame_unwind_memory (next_frame, pc, buf, SIGTRAMP_LEN)) + if (!safe_frame_unwind_memory (this_frame, pc, buf, SIGTRAMP_LEN)) return 0; if (((buf[1] << 8) + buf[0]) != SIGTRAMP_INSN0) @@ -257,7 +257,7 @@ cris_rt_sigtramp_start (struct frame_info *next_frame) return 0; pc -= SIGTRAMP_OFFSET1; - if (!safe_frame_unwind_memory (next_frame, pc, buf, SIGTRAMP_LEN)) + if (!safe_frame_unwind_memory (this_frame, pc, buf, SIGTRAMP_LEN)) return 0; } @@ -267,22 +267,22 @@ cris_rt_sigtramp_start (struct frame_info *next_frame) return pc; } -/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp - routine, return the address of the associated sigcontext structure. */ +/* Assuming THIS_FRAME is a frame for a GNU/Linux sigtramp routine, + return the address of the associated sigcontext structure. */ static CORE_ADDR -cris_sigcontext_addr (struct frame_info *next_frame) +cris_sigcontext_addr (struct frame_info *this_frame) { CORE_ADDR pc; CORE_ADDR sp; char buf[4]; - frame_unwind_register (next_frame, - gdbarch_sp_regnum (get_frame_arch (next_frame)), buf); + get_frame_register (this_frame, + gdbarch_sp_regnum (get_frame_arch (this_frame)), buf); sp = extract_unsigned_integer (buf, 4); /* Look for normal sigtramp frame first. */ - pc = cris_sigtramp_start (next_frame); + pc = cris_sigtramp_start (this_frame); if (pc) { /* struct signal_frame (arch/cris/kernel/signal.c) contains @@ -291,7 +291,7 @@ cris_sigcontext_addr (struct frame_info *next_frame) return sp; } - pc = cris_rt_sigtramp_start (next_frame); + pc = cris_rt_sigtramp_start (this_frame); if (pc) { /* struct rt_signal_frame (arch/cris/kernel/signal.c) contains @@ -330,10 +330,10 @@ struct cris_unwind_cache }; static struct cris_unwind_cache * -cris_sigtramp_frame_unwind_cache (struct frame_info *next_frame, +cris_sigtramp_frame_unwind_cache (struct frame_info *this_frame, void **this_cache) { - struct gdbarch *gdbarch = get_frame_arch (next_frame); + struct gdbarch *gdbarch = get_frame_arch (this_frame); struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); struct cris_unwind_cache *info; CORE_ADDR pc; @@ -347,7 +347,7 @@ cris_sigtramp_frame_unwind_cache (struct frame_info *next_frame, info = FRAME_OBSTACK_ZALLOC (struct cris_unwind_cache); (*this_cache) = info; - info->saved_regs = trad_frame_alloc_saved_regs (next_frame); + info->saved_regs = trad_frame_alloc_saved_regs (this_frame); /* Zero all fields. */ info->prev_sp = 0; @@ -359,10 +359,10 @@ cris_sigtramp_frame_unwind_cache (struct frame_info *next_frame, info->return_pc = 0; info->leaf_function = 0; - frame_unwind_register (next_frame, gdbarch_sp_regnum (gdbarch), buf); + get_frame_register (this_frame, gdbarch_sp_regnum (gdbarch), buf); info->base = extract_unsigned_integer (buf, 4); - addr = cris_sigcontext_addr (next_frame); + addr = cris_sigcontext_addr (this_frame); /* Layout of the sigcontext struct: struct sigcontext { @@ -425,51 +425,48 @@ cris_sigtramp_frame_unwind_cache (struct frame_info *next_frame, } static void -cris_sigtramp_frame_this_id (struct frame_info *next_frame, void **this_cache, +cris_sigtramp_frame_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { struct cris_unwind_cache *cache = - cris_sigtramp_frame_unwind_cache (next_frame, this_cache); - (*this_id) = frame_id_build (cache->base, frame_pc_unwind (next_frame)); + cris_sigtramp_frame_unwind_cache (this_frame, this_cache); + (*this_id) = frame_id_build (cache->base, get_frame_pc (this_frame)); } /* Forward declaration. */ -static void cris_frame_prev_register (struct frame_info *next_frame, - void **this_prologue_cache, - int regnum, int *optimizedp, - enum lval_type *lvalp, CORE_ADDR *addrp, - int *realnump, gdb_byte *bufferp); -static void -cris_sigtramp_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 *cris_frame_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum); +static struct value * +cris_sigtramp_frame_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum) { /* Make sure we've initialized the cache. */ - cris_sigtramp_frame_unwind_cache (next_frame, this_cache); - cris_frame_prev_register (next_frame, this_cache, regnum, - optimizedp, lvalp, addrp, realnump, valuep); + cris_sigtramp_frame_unwind_cache (this_frame, this_cache); + return cris_frame_prev_register (this_frame, this_cache, regnum); +} + +static int +cris_sigtramp_frame_sniffer (const struct frame_unwind *self, + struct frame_info *this_frame, + void **this_cache) +{ + if (cris_sigtramp_start (this_frame) + || cris_rt_sigtramp_start (this_frame)) + return 1; + + return 0; } static const struct frame_unwind cris_sigtramp_frame_unwind = { SIGTRAMP_FRAME, cris_sigtramp_frame_this_id, - cris_sigtramp_frame_prev_register + cris_sigtramp_frame_prev_register, + NULL, + cris_sigtramp_frame_sniffer }; -static const struct frame_unwind * -cris_sigtramp_frame_sniffer (struct frame_info *next_frame) -{ - if (cris_sigtramp_start (next_frame) - || cris_rt_sigtramp_start (next_frame)) - return &cris_sigtramp_frame_unwind; - - return NULL; -} - int crisv32_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *this_frame) @@ -717,11 +714,11 @@ static void set_cris_dwarf2_cfi (char *ignore_args, int from_tty, struct cmd_list_element *c); static CORE_ADDR cris_scan_prologue (CORE_ADDR pc, - struct frame_info *next_frame, + struct frame_info *this_frame, struct cris_unwind_cache *info); static CORE_ADDR crisv32_scan_prologue (CORE_ADDR pc, - struct frame_info *next_frame, + struct frame_info *this_frame, struct cris_unwind_cache *info); static CORE_ADDR cris_unwind_pc (struct gdbarch *gdbarch, @@ -770,7 +767,7 @@ pop_stack_item (struct stack_item *si) for it IS the sp for the next frame. */ struct cris_unwind_cache * -cris_frame_unwind_cache (struct frame_info *next_frame, +cris_frame_unwind_cache (struct frame_info *this_frame, void **this_prologue_cache) { CORE_ADDR pc; @@ -782,7 +779,7 @@ cris_frame_unwind_cache (struct frame_info *next_frame, info = FRAME_OBSTACK_ZALLOC (struct cris_unwind_cache); (*this_prologue_cache) = info; - info->saved_regs = trad_frame_alloc_saved_regs (next_frame); + info->saved_regs = trad_frame_alloc_saved_regs (this_frame); /* Zero all fields. */ info->prev_sp = 0; @@ -796,11 +793,9 @@ cris_frame_unwind_cache (struct frame_info *next_frame, /* Prologue analysis does the rest... */ if (cris_version () == 32) - crisv32_scan_prologue (frame_func_unwind (next_frame, NORMAL_FRAME), - next_frame, info); + crisv32_scan_prologue (get_frame_func (this_frame), this_frame, info); else - cris_scan_prologue (frame_func_unwind (next_frame, NORMAL_FRAME), - next_frame, info); + cris_scan_prologue (get_frame_func (this_frame), this_frame, info); return info; } @@ -809,18 +804,18 @@ cris_frame_unwind_cache (struct frame_info *next_frame, frame. This will be used to create a new GDB frame struct. */ static void -cris_frame_this_id (struct frame_info *next_frame, +cris_frame_this_id (struct frame_info *this_frame, void **this_prologue_cache, struct frame_id *this_id) { struct cris_unwind_cache *info - = cris_frame_unwind_cache (next_frame, this_prologue_cache); + = cris_frame_unwind_cache (this_frame, this_prologue_cache); CORE_ADDR base; CORE_ADDR func; struct frame_id id; /* The FUNC is easy. */ - func = frame_func_unwind (next_frame, NORMAL_FRAME); + func = get_frame_func (this_frame); /* Hopefully the prologue analysis either correctly determined the frame's base (which is the SP from the previous frame), or set @@ -834,29 +829,25 @@ cris_frame_this_id (struct frame_info *next_frame, (*this_id) = id; } -static void -cris_frame_prev_register (struct frame_info *next_frame, - void **this_prologue_cache, - int regnum, int *optimizedp, - enum lval_type *lvalp, CORE_ADDR *addrp, - int *realnump, gdb_byte *bufferp) +static struct value * +cris_frame_prev_register (struct frame_info *this_frame, + void **this_prologue_cache, int regnum) { struct cris_unwind_cache *info - = cris_frame_unwind_cache (next_frame, this_prologue_cache); - trad_frame_get_prev_register (next_frame, info->saved_regs, regnum, - optimizedp, lvalp, addrp, realnump, bufferp); + = cris_frame_unwind_cache (this_frame, this_prologue_cache); + return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); } -/* Assuming NEXT_FRAME->prev 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. */ +/* 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 -cris_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame) +cris_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) { - return frame_id_build (cris_unwind_sp (gdbarch, next_frame), - frame_pc_unwind (next_frame)); + CORE_ADDR sp; + sp = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch)); + return frame_id_build (sp, get_frame_pc (this_frame)); } static CORE_ADDR @@ -1011,20 +1002,16 @@ static const struct frame_unwind cris_frame_unwind = { NORMAL_FRAME, cris_frame_this_id, - cris_frame_prev_register + cris_frame_prev_register, + NULL, + default_frame_sniffer }; -const struct frame_unwind * -cris_frame_sniffer (struct frame_info *next_frame) -{ - return &cris_frame_unwind; -} - static CORE_ADDR -cris_frame_base_address (struct frame_info *next_frame, void **this_cache) +cris_frame_base_address (struct frame_info *this_frame, void **this_cache) { struct cris_unwind_cache *info - = cris_frame_unwind_cache (next_frame, this_cache); + = cris_frame_unwind_cache (this_frame, this_cache); return info->base; } @@ -1113,10 +1100,10 @@ static const struct frame_base cris_frame_base = determine that it is a prologue (1). */ static CORE_ADDR -cris_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, +cris_scan_prologue (CORE_ADDR pc, struct frame_info *this_frame, struct cris_unwind_cache *info) { - struct gdbarch *gdbarch = get_frame_arch (next_frame); + struct gdbarch *gdbarch = get_frame_arch (this_frame); /* Present instruction. */ unsigned short insn; @@ -1149,11 +1136,11 @@ cris_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, val = 0; regsave = -1; - /* If we were called without a next_frame, that means we were called + /* If we were called without a this_frame, that means we were called from cris_skip_prologue which already tried to find the end of the prologue through the symbol information. 64 instructions past current pc is arbitrarily chosen, but at least it means we'll stop eventually. */ - limit = next_frame ? frame_pc_unwind (next_frame) : pc + 64; + limit = this_frame ? get_frame_pc (this_frame) : pc + 64; /* Find the prologue instructions. */ while (pc > 0 && pc < limit) @@ -1322,9 +1309,9 @@ cris_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, } } - /* We only want to know the end of the prologue when next_frame and info + /* We only want to know the end of the prologue when this_frame and info are NULL (called from cris_skip_prologue i.e.). */ - if (next_frame == NULL && info == NULL) + if (this_frame == NULL && info == NULL) { return pc; } @@ -1339,7 +1326,7 @@ cris_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, /* The SP was moved to the FP. This indicates that a new frame was created. Get THIS frame's FP value by unwinding it from the next frame. */ - this_base = frame_unwind_register_unsigned (next_frame, CRIS_FP_REGNUM); + this_base = get_frame_register_unsigned (this_frame, CRIS_FP_REGNUM); info->base = this_base; info->saved_regs[CRIS_FP_REGNUM].addr = info->base; @@ -1352,8 +1339,8 @@ cris_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, ULONGEST this_base; /* Assume that the FP is this frame's SP but with that pushed stack space added back. */ - this_base = frame_unwind_register_unsigned (next_frame, - gdbarch_sp_regnum (gdbarch)); + this_base = get_frame_register_unsigned (this_frame, + gdbarch_sp_regnum (gdbarch)); info->base = this_base; info->prev_sp = info->base + info->size; } @@ -1398,10 +1385,10 @@ cris_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, } static CORE_ADDR -crisv32_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, +crisv32_scan_prologue (CORE_ADDR pc, struct frame_info *this_frame, struct cris_unwind_cache *info) { - struct gdbarch *gdbarch = get_frame_arch (next_frame); + struct gdbarch *gdbarch = get_frame_arch (this_frame); ULONGEST this_base; /* Unlike the CRISv10 prologue scanner (cris_scan_prologue), this is not @@ -1416,16 +1403,16 @@ crisv32_scan_prologue (CORE_ADDR pc, struct frame_info *next_frame, the stack pointer is not adjusted, and (as a consequence) the return address is not pushed onto the stack. */ - /* We only want to know the end of the prologue when next_frame and info + /* We only want to know the end of the prologue when this_frame and info are NULL (called from cris_skip_prologue i.e.). */ - if (next_frame == NULL && info == NULL) + if (this_frame == NULL && info == NULL) { return pc; } /* The SP is assumed to be unaltered. */ - this_base = frame_unwind_register_unsigned (next_frame, - gdbarch_sp_regnum (gdbarch)); + this_base = get_frame_register_unsigned (this_frame, + gdbarch_sp_regnum (gdbarch)); info->base = this_base; info->prev_sp = this_base; @@ -4207,22 +4194,22 @@ cris_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) set_gdbarch_unwind_pc (gdbarch, cris_unwind_pc); set_gdbarch_unwind_sp (gdbarch, cris_unwind_sp); - set_gdbarch_unwind_dummy_id (gdbarch, cris_unwind_dummy_id); + set_gdbarch_dummy_id (gdbarch, cris_dummy_id); if (tdep->cris_dwarf2_cfi == 1) { /* Hook in the Dwarf-2 frame sniffer. */ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, cris_dwarf2_reg_to_regnum); dwarf2_frame_set_init_reg (gdbarch, cris_dwarf2_frame_init_reg); - frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer); + dwarf2_append_unwinders (gdbarch); } if (tdep->cris_mode != cris_mode_guru) { - frame_unwind_append_sniffer (gdbarch, cris_sigtramp_frame_sniffer); + frame_unwind_append_unwinder (gdbarch, &cris_sigtramp_frame_unwind); } - frame_unwind_append_sniffer (gdbarch, cris_frame_sniffer); + frame_unwind_append_unwinder (gdbarch, &cris_frame_unwind); frame_base_set_default (gdbarch, &cris_frame_base); set_solib_svr4_fetch_link_map_offsets |