Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-10 23:24:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

Search the exception table with linear algorithm

Browse source 
Search the exception table with linear algorithm instead of
bisecting algorithm.
Because the exception table might be unsorted.

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
This commit is contained in:
Zang Roy-r61911 2007-05-09 08:10:57 +08:00 committed by Wolfgang Denk
parent 5dfaa50eb8
commit 1b305bdc75
1 changed files with 19 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

41
lib_ppc/extable.c
View file

@ -52,30 +52,27 @@ search_one_table(const struct exception_table_entry *first,
const struct exception_table_entry *last,
unsigned long value)
{
while (first <= last) {
const struct exception_table_entry *mid;
long diff;
mid = (last - first) / 2 + first;
if ((ulong) mid > CFG_MONITOR_BASE) {
/* exception occurs in FLASH, before u-boot relocation.
* No relocation offset is needed.
*/
diff = mid->insn - value;
long diff;
if ((ulong) first > CFG_MONITOR_BASE) {
/* exception occurs in FLASH, before u-boot relocation.
* No relocation offset is needed.
*/
while (first <= last) {
diff = first->insn - value;
if (diff == 0)
return mid->fixup;
} else {
/* exception occurs in RAM, after u-boot relocation.
* A relocation offset should be added.
*/
diff = (mid->insn + gd->reloc_off) - value;
if (diff == 0)
return (mid->fixup + gd->reloc_off);
return first->fixup;
first++;
}
} else {
/* exception occurs in RAM, after u-boot relocation.
* A relocation offset should be added.
*/
while (first <= last) {
diff = (first->insn + gd->reloc_off) - value;
if (diff == 0)
return (first->fixup + gd->reloc_off);
first++;
}
if (diff < 0)
first = mid + 1;
else
last = mid - 1;
}
return 0;
}