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gdb/arm: Simplify logic for updating addresses

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Small performance improvement by fetching previous SP value only
once before the loop and reuse it to avoid fetching at every
iteration.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
This commit is contained in:
Yvan Roux
2022-06-09 16:34:53 +02:00
parent 8db775b211
commit 1ef3351b7b
1 changed files with 5 additions and 4 deletions
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9
gdb/arm-tdep.c
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@@ -2177,7 +2177,7 @@ arm_make_prologue_cache (struct frame_info *this_frame)
{
int reg;
struct arm_prologue_cache *cache;
CORE_ADDR unwound_fp;
CORE_ADDR unwound_fp, prev_sp;
cache = FRAME_OBSTACK_ZALLOC (struct arm_prologue_cache);
arm_cache_init (cache, this_frame);
@@ -2191,14 +2191,15 @@ arm_make_prologue_cache (struct frame_info *this_frame)
arm_gdbarch_tdep *tdep =
(arm_gdbarch_tdep *) gdbarch_tdep (get_frame_arch (this_frame));
arm_cache_set_active_sp_value (cache, tdep, unwound_fp + cache->framesize);
prev_sp = unwound_fp + cache->framesize;
arm_cache_set_active_sp_value (cache, tdep, prev_sp);
/* Calculate actual addresses of saved registers using offsets
determined by arm_scan_prologue. */
for (reg = 0; reg < gdbarch_num_regs (get_frame_arch (this_frame)); reg++)
if (cache->saved_regs[reg].is_addr ())
cache->saved_regs[reg].set_addr (cache->saved_regs[reg].addr ()
+ arm_cache_get_prev_sp_value (cache, tdep));
cache->saved_regs[reg].set_addr (cache->saved_regs[reg].addr () +
prev_sp);
return cache;
}