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* i386-tdep.c (i386_frame_cache): Assume valid anonymous

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functions use a frame pointer.
This commit is contained in:
Daniel Jacobowitz
2010-02-01 19:46:46 +00:00
parent b381ea14bd
commit 7618e12bcb
2 changed files with 19 additions and 1 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2010-02-01 Michael Matz <matz@suse.de>
Daniel Jacobowitz <dan@codesourcery.com>
* i386-tdep.c (i386_frame_cache): Assume valid anonymous
functions use a frame pointer.
2010-02-01 Jan Kratochvil <jan.kratochvil@redhat.com> 2010-02-01 Jan Kratochvil <jan.kratochvil@redhat.com>
* solib-svr4.c (scan_dyntag): New variable dyn_addr. Replace gdb_assert * solib-svr4.c (scan_dyntag): New variable dyn_addr. Replace gdb_assert

14
gdb/i386-tdep.c
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@ -1395,12 +1395,24 @@ i386_frame_cache (struct frame_info *this_frame, void **this_cache)
/* This will be added back below. */ /* This will be added back below. */
cache->saved_regs[I386_EIP_REGNUM] -= cache->base; cache->saved_regs[I386_EIP_REGNUM] -= cache->base;
} }
else else if (cache->pc != 0
|| target_read_memory (get_frame_pc (this_frame), buf, 1))
{ {
/* We're in a known function, but did not find a frame
setup. Assume that the function does not use %ebp.
Alternatively, we may have jumped to an invalid
address; in that case there is definitely no new
frame in %ebp. */
get_frame_register (this_frame, I386_ESP_REGNUM, buf); get_frame_register (this_frame, I386_ESP_REGNUM, buf);
cache->base = extract_unsigned_integer (buf, 4, byte_order) cache->base = extract_unsigned_integer (buf, 4, byte_order)
+ cache->sp_offset; + cache->sp_offset;
} }
else
/* We're in an unknown function. We could not find the start
of the function to analyze the prologue; our best option is
to assume a typical frame layout with the caller's %ebp
saved. */
cache->saved_regs[I386_EBP_REGNUM] = 0;
} }
/* Now that we have the base address for the stack frame we can /* Now that we have the base address for the stack frame we can