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* x86-64-tdep.c (x86_64_frame_cache): Don't bail out if %rbp is

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zero.  Reorganize code a bit.
This commit is contained in:
Mark Kettenis 2003-11-27 23:33:07 +00:00
parent fdec90e86d
commit 35883a3f2f
2 changed files with 15 additions and 8 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2003-11-28 Mark Kettenis <kettenis@gnu.org>
* x86-64-tdep.c (x86_64_frame_cache): Don't bail out if %rbp is
zero. Reorganize code a bit.
2003-11-27 Mark Kettenis <kettenis@gnu.org>
* dwarf2-frame.c: Fix another comment.

18
gdb/x86-64-tdep.c
View File

@ -1061,14 +1061,6 @@ x86_64_frame_cache (struct frame_info *next_frame, void **this_cache)
cache = x86_64_alloc_frame_cache ();
*this_cache = cache;
frame_unwind_register (next_frame, X86_64_RBP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 8);
if (cache->base == 0)
return cache;
/* For normal frames, %rip is stored at 8(%rbp). */
cache->saved_regs[X86_64_RIP_REGNUM] = 8;
cache->pc = frame_func_unwind (next_frame);
if (cache->pc != 0)
x86_64_analyze_prologue (cache->pc, frame_pc_unwind (next_frame), cache);
@ -1086,11 +1078,21 @@ x86_64_frame_cache (struct frame_info *next_frame, void **this_cache)
frame_unwind_register (next_frame, X86_64_RSP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 8) + cache->sp_offset;
}
else
{
frame_unwind_register (next_frame, X86_64_RBP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 8);
}
/* Now that we have the base address for the stack frame we can
calculate the value of %rsp in the calling frame. */
cache->saved_sp = cache->base + 16;
/* For normal frames, %rip is stored at 8(%rbp). If we don't have a
frame we find it at the same offset from the reconstructed base
address. */
cache->saved_regs[X86_64_RIP_REGNUM] = 8;
/* Adjust all the saved registers such that they contain addresses
instead of offsets. */
for (i = 0; i < X86_64_NUM_SAVED_REGS; i++)