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authorThomas Schwinge <tschwinge@gnu.org>2012-02-24 11:00:07 +0000
committerThomas Schwinge <tschwinge@gnu.org>2012-02-24 11:00:07 +0000
commit8a8bc27fb314dbcbc75df4dc9f23bc83eeb64277 (patch)
treee1b2f46dfc182e38e32222396d646aa95dac4eb6 /gdb/sh-tdep.c
parent4115917d4bc2522b56e1b4975a566409d7cc0717 (diff)
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* sh-tdep.c (sh_skip_prologue): Use skip_prologue_using_sal.
(after_prologue): Remove.
Diffstat (limited to 'gdb/sh-tdep.c')
-rw-r--r--gdb/sh-tdep.c52
1 files changed, 13 insertions, 39 deletions
diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
index 12116fd..489bb40 100644
--- a/gdb/sh-tdep.c
+++ b/gdb/sh-tdep.c
@@ -712,55 +712,29 @@ sh_analyze_prologue (struct gdbarch *gdbarch,
}
/* Skip any prologue before the guts of a function. */
-
-/* Skip the prologue using the debug information. If this fails we'll
- fall back on the 'guess' method below. */
-static CORE_ADDR
-after_prologue (CORE_ADDR pc)
-{
- struct symtab_and_line sal;
- CORE_ADDR func_addr, func_end;
-
- /* If we can not find the symbol in the partial symbol table, then
- there is no hope we can determine the function's start address
- with this code. */
- if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
- return 0;
-
- /* Get the line associated with FUNC_ADDR. */
- sal = find_pc_line (func_addr, 0);
-
- /* There are only two cases to consider. First, the end of the source line
- is within the function bounds. In that case we return the end of the
- source line. Second is the end of the source line extends beyond the
- bounds of the current function. We need to use the slow code to
- examine instructions in that case. */
- if (sal.end < func_end)
- return sal.end;
- else
- return 0;
-}
-
static CORE_ADDR
-sh_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
+sh_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- CORE_ADDR pc;
+ CORE_ADDR post_prologue_pc, func_addr;
struct sh_frame_cache cache;
/* See if we can determine the end of the prologue via the symbol table.
If so, then return either PC, or the PC after the prologue, whichever
is greater. */
- pc = after_prologue (start_pc);
+ if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
+ {
+ post_prologue_pc = skip_prologue_using_sal (gdbarch, func_addr);
+ if (post_prologue_pc != 0)
+ return max (pc, post_prologue_pc);
+ }
- /* If after_prologue returned a useful address, then use it. Else
- fall back on the instruction skipping code. */
- if (pc)
- return max (pc, start_pc);
+ /* Can't determine prologue from the symbol table, need to examine
+ instructions. */
cache.sp_offset = -4;
- pc = sh_analyze_prologue (gdbarch, start_pc, (CORE_ADDR) -1, &cache, 0);
- if (!cache.uses_fp)
- return start_pc;
+ post_prologue_pc = sh_analyze_prologue (gdbarch, pc, (CORE_ADDR) -1, &cache, 0);
+ if (cache.uses_fp)
+ pc = post_prologue_pc;
return pc;
}