d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Calculate offset from frame top for registers saved on a stack frame.

Browse Source
This commit is contained in:
Oleksandr Tymoshenko 2010-11-07 20:37:25 +00:00
parent cefd33c787
commit 8d4844f1ab
1 changed files with 11 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
contrib/gdb/gdb/mips-tdep.c
View File

@ -1495,6 +1495,7 @@ mips_mdebug_frame_cache (struct frame_info *next_frame, void **this_cache)
int kernel_trap;
/* What registers have been saved? Bitmasks. */
unsigned long gen_mask, float_mask;
long reg_offset;
if ((*this_cache) != NULL)
return (*this_cache);
@ -1513,6 +1514,8 @@ mips_mdebug_frame_cache (struct frame_info *next_frame, void **this_cache)
/* Extract the frame's base. */
cache->base = (frame_unwind_register_signed (next_frame, NUM_REGS + PROC_FRAME_REG (proc_desc))
+ PROC_FRAME_OFFSET (proc_desc) - PROC_FRAME_ADJUST (proc_desc));
/* Save registers offset from scratching by following find_proc_desc call */
reg_offset = PROC_REG_OFFSET (proc_desc);
kernel_trap = PROC_REG_MASK (proc_desc) & 1;
gen_mask = kernel_trap ? 0xFFFFFFFF : PROC_REG_MASK (proc_desc);
@ -1567,8 +1570,7 @@ mips_mdebug_frame_cache (struct frame_info *next_frame, void **this_cache)
/* Fill in the offsets for the registers which gen_mask says were
saved. */
{
CORE_ADDR reg_position = (cache->base
+ PROC_REG_OFFSET (proc_desc));
CORE_ADDR reg_position = (cache->base + reg_offset);
int ireg;
for (ireg = MIPS_NUMREGS - 1; gen_mask; --ireg, gen_mask <<= 1)
if (gen_mask & 0x80000000)
@ -2162,15 +2164,18 @@ mips32_heuristic_proc_desc (CORE_ADDR start_pc, CORE_ADDR limit_pc,
{
PROC_REG_MASK (&temp_proc_desc) |= 1 << reg;
set_reg_offset (temp_saved_regs, reg, sp + low_word);
/* Do we have registers offset yet? */
if (!PROC_REG_OFFSET (&temp_proc_desc))
PROC_REG_OFFSET (&temp_proc_desc) = low_word - PROC_FRAME_OFFSET (&temp_proc_desc);
}
else if ((high_word & 0xFFE0) == 0xffa0) /* sd reg,offset($sp) */
{
/* Irix 6.2 N32 ABI uses sd instructions for saving $gp and $ra,
but the register size used is only 32 bits. Make the address
for the saved register point to the lower 32 bits. */
PROC_REG_MASK (&temp_proc_desc) |= 1 << reg;
set_reg_offset (temp_saved_regs, reg,
sp + low_word + 8 - mips_regsize (current_gdbarch));
sp + low_word);
/* Do we have registers offset yet? */
if (!PROC_REG_OFFSET (&temp_proc_desc))
PROC_REG_OFFSET (&temp_proc_desc) = low_word - PROC_FRAME_OFFSET (&temp_proc_desc);
}
else if (high_word == 0x27be) /* addiu $30,$sp,size */
{