diff options
Diffstat (limited to 'gdb/mips-tdep.c')
| -rw-r--r-- | gdb/mips-tdep.c | 70 |
1 files changed, 48 insertions, 22 deletions
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c index 2d8efdf..365eb84 100644 --- a/gdb/mips-tdep.c +++ b/gdb/mips-tdep.c @@ -36,6 +36,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "opcode/mips.h" +struct frame_extra_info +{ + mips_extra_func_info_t proc_desc; + int num_args; +}; + /* Some MIPS boards don't support floating point while others only support single-precision floating-point operations. See also FP_REGISTER_DOUBLE. */ @@ -106,7 +112,16 @@ char *tmp_mips_processor_type; /* A set of original names, to be used when restoring back to generic registers from a specific set. */ -char *mips_generic_reg_names[] = REGISTER_NAMES; +char *mips_generic_reg_names[] = MIPS_REGISTER_NAMES; +char **mips_processor_reg_names = mips_generic_reg_names; + +char * +mips_register_name (i) + int i; +{ + return mips_processor_reg_names[i]; +} + /* Names of IDT R3041 registers. */ @@ -219,6 +234,18 @@ struct linked_proc_info struct linked_proc_info *next; } *linked_proc_desc_table = NULL; +void +mips_print_extra_frame_info (fi) + struct frame_info *fi; +{ + if (fi + && fi->extra_info + && fi->extra_info->proc_desc + && fi->extra_info->proc_desc->pdr.framereg < NUM_REGS) + printf_filtered (" frame pointer is at %s+%d\n", + REGISTER_NAME (fi->extra_info->proc_desc->pdr.framereg), + fi->extra_info->proc_desc->pdr.frameoffset); +} /* Should the upper word of 64-bit addresses be zeroed? */ static int mask_address_p = 1; @@ -873,7 +900,7 @@ mips_find_saved_regs (fci) return; } - proc_desc = fci->proc_desc; + proc_desc = fci->extra_info->proc_desc; if (proc_desc == NULL) /* I'm not sure how/whether this can happen. Normally when we can't find a proc_desc, we "synthesize" one using heuristic_proc_desc @@ -1065,7 +1092,7 @@ mips_frame_saved_pc(frame) struct frame_info *frame; { CORE_ADDR saved_pc; - mips_extra_func_info_t proc_desc = frame->proc_desc; + mips_extra_func_info_t proc_desc = frame->extra_info->proc_desc; /* We have to get the saved pc from the sigcontext if it is a signal handler frame. */ int pcreg = frame->signal_handler_caller ? PC_REGNUM @@ -1080,7 +1107,7 @@ mips_frame_saved_pc(frame) } static struct mips_extra_func_info temp_proc_desc; -static struct frame_saved_regs temp_saved_regs; +static CORE_ADDR temp_saved_regs[NUM_REGS]; /* Set a register's saved stack address in temp_saved_regs. If an address has already been set for this register, do nothing; this way we will @@ -1092,8 +1119,8 @@ set_reg_offset (regno, offset) int regno; CORE_ADDR offset; { - if (temp_saved_regs.regs[regno] == 0) - temp_saved_regs.regs[regno] = offset; + if (temp_saved_regs[regno] == 0) + temp_saved_regs[regno] = offset; } @@ -1405,7 +1432,7 @@ mips32_heuristic_proc_desc(start_pc, limit_pc, next_frame, sp) CORE_ADDR cur_pc; CORE_ADDR frame_addr = 0; /* Value of $r30. Used by gcc for frame-pointer */ restart: - memset (&temp_saved_regs, '\0', sizeof(struct frame_saved_regs)); + memset (temp_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS); PROC_FRAME_OFFSET(&temp_proc_desc) = 0; PROC_FRAME_ADJUST (&temp_proc_desc) = 0; /* offset of FP from SP */ for (cur_pc = start_pc; cur_pc < limit_pc; cur_pc += MIPS_INSTLEN) @@ -1508,7 +1535,7 @@ heuristic_proc_desc(start_pc, limit_pc, next_frame) if (start_pc == 0) return NULL; memset (&temp_proc_desc, '\0', sizeof(temp_proc_desc)); - memset (&temp_saved_regs, '\0', sizeof(struct frame_saved_regs)); + memset (&temp_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS); PROC_LOW_ADDR (&temp_proc_desc) = start_pc; PROC_FRAME_REG (&temp_proc_desc) = SP_REGNUM; PROC_PC_REG (&temp_proc_desc) = RA_REGNUM; @@ -1676,7 +1703,8 @@ mips_frame_chain(frame) } void -init_extra_frame_info(fci) +mips_init_extra_frame_info(fromleaf, fci) + int fromleaf; struct frame_info *fci; { int regnum; @@ -1685,8 +1713,11 @@ init_extra_frame_info(fci) mips_extra_func_info_t proc_desc = fci->next ? cached_proc_desc : find_proc_desc(fci->pc, fci->next); + fci->extra_info = (struct frame_extra_info *) + frame_obstack_alloc (sizeof (struct frame_extra_info)); + fci->saved_regs = NULL; - fci->proc_desc = + fci->extra_info->proc_desc = proc_desc == &temp_proc_desc ? 0 : proc_desc; if (proc_desc) { @@ -1711,21 +1742,21 @@ init_extra_frame_info(fci) (CORE_ADDR *)NULL,(CORE_ADDR *)NULL); if (!IN_SIGTRAMP (fci->pc, name)) { - fci->saved_regs = (CORE_ADDR*) - frame_obstack_alloc (SIZEOF_FRAME_SAVED_REGS); - memcpy (fci->saved_regs, temp_saved_regs.regs, SIZEOF_FRAME_SAVED_REGS); + frame_saved_regs_zalloc (fci); + memcpy (fci->saved_regs, temp_saved_regs, SIZEOF_FRAME_SAVED_REGS); fci->saved_regs[PC_REGNUM] = fci->saved_regs[RA_REGNUM]; } } /* hack: if argument regs are saved, guess these contain args */ - fci->num_args = -1; /* assume we can't tell how many args for now */ + /* assume we can't tell how many args for now */ + fci->extra_info->num_args = -1; for (regnum = MIPS_LAST_ARG_REGNUM; regnum >= A0_REGNUM; regnum--) { if (PROC_REG_MASK(proc_desc) & (1 << regnum)) { - fci->num_args = regnum - A0_REGNUM + 1; + fci->extra_info->num_args = regnum - A0_REGNUM + 1; break; } } @@ -2109,7 +2140,7 @@ mips_pop_frame() struct frame_info *frame = get_current_frame (); CORE_ADDR new_sp = FRAME_FP (frame); - mips_extra_func_info_t proc_desc = frame->proc_desc; + mips_extra_func_info_t proc_desc = frame->extra_info->proc_desc; write_register (PC_REGNUM, FRAME_SAVED_PC(frame)); if (frame->saved_regs == NULL) @@ -3012,13 +3043,8 @@ mips_set_processor_type (str) if (strcasecmp (str, mips_processor_type_table[i].name) == 0) { mips_processor_type = str; - - for (j = 0; j < NUM_REGS; ++j) - /* FIXME - MIPS should be defining REGISTER_NAME() instead */ - gdb_register_names[j] = mips_processor_type_table[i].regnames[j]; - + mips_processor_reg_names = mips_processor_type_table[i].regnames; return 1; - /* FIXME tweak fpu flag too */ } } |