diff options
Diffstat (limited to 'gdb/frv-tdep.c')
-rw-r--r-- | gdb/frv-tdep.c | 88 |
1 files changed, 61 insertions, 27 deletions
diff --git a/gdb/frv-tdep.c b/gdb/frv-tdep.c index 82bd7e6..9828b90 100644 --- a/gdb/frv-tdep.c +++ b/gdb/frv-tdep.c @@ -19,11 +19,14 @@ Boston, MA 02111-1307, USA. */ #include "defs.h" +#include "gdb_string.h" #include "inferior.h" #include "symfile.h" /* for entry_point_address */ #include "gdbcore.h" #include "arch-utils.h" #include "regcache.h" +#include "frame.h" +#include "trad-frame.h" extern void _initialize_frv_tdep (void); @@ -37,6 +40,7 @@ static gdbarch_deprecated_extract_struct_value_address_ftype frv_extract_struct_ static gdbarch_frameless_function_invocation_ftype frv_frameless_function_invocation; static gdbarch_deprecated_push_arguments_ftype frv_push_arguments; static gdbarch_deprecated_saved_pc_after_call_ftype frv_saved_pc_after_call; +static void frv_frame_init_saved_regs (struct frame_info *frame); static void frv_pop_frame_regular (struct frame_info *frame); @@ -92,6 +96,9 @@ struct frame_extra_info /* Non-zero if we've saved our return address on the stack yet. Zero if it's still sitting in the link register. */ int lr_saved_on_stack; + + /* Table indicating the location of each and every register. */ + struct trad_frame_saved_reg *saved_regs; }; @@ -271,12 +278,16 @@ static CORE_ADDR frv_frame_chain (struct frame_info *frame) { CORE_ADDR saved_fp_addr; + struct frame_extra_info *extra_info = + get_frame_extra_info (frame); - if (frame->saved_regs && frame->saved_regs[fp_regnum] != 0) - saved_fp_addr = frame->saved_regs[fp_regnum]; + if (extra_info && + extra_info->saved_regs && + extra_info->saved_regs[fp_regnum].addr != 0) + saved_fp_addr = extra_info->saved_regs[fp_regnum].addr; else /* Just assume it was saved in the usual place. */ - saved_fp_addr = frame->frame; + saved_fp_addr = get_frame_base (frame); return read_memory_integer (saved_fp_addr, 4); } @@ -284,28 +295,32 @@ frv_frame_chain (struct frame_info *frame) static CORE_ADDR frv_frame_saved_pc (struct frame_info *frame) { + struct frame_extra_info *extra_info = + get_frame_extra_info (frame); + frv_frame_init_saved_regs (frame); /* Perhaps the prologue analyzer recorded where it was stored. (As of 14 Oct 2001, it never does.) */ - if (frame->saved_regs && frame->saved_regs[pc_regnum] != 0) - return read_memory_integer (frame->saved_regs[pc_regnum], 4); + if (extra_info && extra_info->saved_regs && + extra_info->saved_regs[pc_regnum].addr != 0) + return read_memory_integer (extra_info->saved_regs[pc_regnum].addr, 4); /* If the prologue analyzer tells us the link register was saved on the stack, get it from there. */ - if (frame->extra_info->lr_saved_on_stack) - return read_memory_integer (frame->frame + 8, 4); + if (extra_info->lr_saved_on_stack) + return read_memory_integer (get_frame_base (frame) + 8, 4); /* Otherwise, it's still in LR. However, if FRAME isn't the youngest frame, this is kind of suspicious --- if this frame called somebody else, then its LR has certainly been overwritten. */ - if (! frame->next) + if (! get_next_frame (frame)) return read_register (lr_regnum); /* By default, assume it's saved in the standard place, relative to the frame pointer. */ - return read_memory_integer (frame->frame + 8, 4); + return read_memory_integer (get_frame_base (frame) + 8, 4); } @@ -390,7 +405,7 @@ frv_analyze_prologue (CORE_ADDR pc, struct frame_info *frame) memset (gr_saved, 0, sizeof (gr_saved)); - while (! frame || pc < frame->pc) + while (! frame || pc < get_frame_pc (frame)) { LONGEST op = read_memory_integer (pc, 4); @@ -658,7 +673,10 @@ frv_analyze_prologue (CORE_ADDR pc, struct frame_info *frame) if (frame) { - frame->extra_info->lr_saved_on_stack = lr_saved_on_stack; + struct frame_extra_info *extra_info = + get_frame_extra_info (frame); + + extra_info->lr_saved_on_stack = lr_saved_on_stack; /* If we know the relationship between the stack and frame pointers, record the addresses of the registers we noticed. @@ -667,14 +685,17 @@ frv_analyze_prologue (CORE_ADDR pc, struct frame_info *frame) their addresses relative to the FP. */ if (fp_set) { + struct trad_frame_saved_reg *saved_regs; int i; + saved_regs = extra_info->saved_regs; for (i = 0; i < 64; i++) if (gr_saved[i]) - frame->saved_regs[i] = (frame->frame - - fp_offset + gr_sp_offset[i]); + trad_frame_set_value (saved_regs, i, + get_frame_base (frame) - fp_offset + + gr_sp_offset[i]); - frame->extra_info->fp_to_callers_sp_offset = framesize - fp_offset; + extra_info->fp_to_callers_sp_offset = framesize - fp_offset; } } @@ -716,18 +737,23 @@ frv_skip_prologue (CORE_ADDR pc) static void frv_frame_init_saved_regs (struct frame_info *frame) { - if (frame->saved_regs) + struct frame_extra_info *extra_info = + get_frame_extra_info (frame); + + if (extra_info && extra_info->saved_regs) return; - frame_saved_regs_zalloc (frame); - frame->saved_regs[fp_regnum] = frame->frame; + extra_info->saved_regs = trad_frame_alloc_saved_regs (frame); + trad_frame_set_value (extra_info->saved_regs, + fp_regnum, get_frame_base (frame)); /* Find the beginning of this function, so we can analyze its prologue. */ { CORE_ADDR func_addr, func_end; - if (find_pc_partial_function (frame->pc, NULL, &func_addr, &func_end)) + if (find_pc_partial_function (get_frame_pc (frame), + NULL, &func_addr, &func_end)) frv_analyze_prologue (func_addr, frame); } } @@ -744,7 +770,8 @@ frv_extract_return_value (struct type *type, char *regbuf, char *valbuf) static CORE_ADDR frv_extract_struct_value_address (char *regbuf) { - return extract_unsigned_integer (regbuf + frv_register_byte (struct_return_regnum), + return extract_unsigned_integer (regbuf + + frv_register_byte (struct_return_regnum), 4); } @@ -769,9 +796,12 @@ frv_saved_pc_after_call (struct frame_info *frame) static void frv_init_extra_frame_info (int fromleaf, struct frame_info *frame) { - frame_extra_info_zalloc (frame, sizeof (struct frame_extra_info)); - frame->extra_info->fp_to_callers_sp_offset = 0; - frame->extra_info->lr_saved_on_stack = 0; + struct frame_extra_info *extra_info = + frame_extra_info_zalloc (frame, sizeof (struct frame_extra_info)); + + extra_info->fp_to_callers_sp_offset = 0; + extra_info->lr_saved_on_stack = 0; + extra_info->saved_regs = trad_frame_alloc_saved_regs (frame); } #define ROUND_UP(n,a) (((n)+(a)-1) & ~((a)-1)) @@ -897,25 +927,29 @@ frv_pop_frame (void) static void frv_pop_frame_regular (struct frame_info *frame) { + struct frame_extra_info *extra_info; + struct trad_frame_saved_reg *saved_regs; + CORE_ADDR fp; int regno; - fp = frame->frame; + fp = get_frame_base (frame); frv_frame_init_saved_regs (frame); - + extra_info = get_frame_extra_info (frame); + saved_regs = extra_info->saved_regs; write_register (pc_regnum, frv_frame_saved_pc (frame)); for (regno = 0; regno < frv_num_regs; ++regno) { - if (frame->saved_regs[regno] + if (extra_info->saved_regs[regno].addr && regno != pc_regnum && regno != sp_regnum) { write_register (regno, - read_memory_integer (frame->saved_regs[regno], 4)); + read_memory_integer (saved_regs[regno].addr, 4)); } } - write_register (sp_regnum, fp + frame->extra_info->fp_to_callers_sp_offset); + write_register (sp_regnum, fp + extra_info->fp_to_callers_sp_offset); flush_cached_frames (); } |