AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-22 13:00:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Update.

Browse Source 
1999-07-13  Andreas Schwab  <schwab@suse.de>

	* elf/dl-runtime.c (fixup, profile_fixup): Call alloca to prevent
	inlining.  Fixes PR libc/1198.
This commit is contained in:
Ulrich Drepper 1999-07-14 15:10:51 +00:00
parent c68cb81185
commit c33bd0123e
2 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
ChangeLog
View File

@ -1,3 +1,8 @@
1999-07-13 Andreas Schwab <schwab@suse.de>
* elf/dl-runtime.c (fixup, profile_fixup): Call alloca to prevent
inlining. Fixes PR libc/1198.
1999-07-14 Andreas Schwab <schwab@suse.de>
* Makerules (common-generated): Don't prepend $(common-objpfx).

12
elf/dl-runtime.c
View File

@ -57,6 +57,12 @@ fixup (
void *const rel_addr = (void *)(l->l_addr + reloc->r_offset);
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
to prevent the function from being inlined and thus optimized out.
There is no official way to do this so we use this trick. gcc never
inlines functions which use `alloca'. */
alloca (sizeof (int));
/* Sanity check that we're really looking at a PLT relocation. */
assert (ELFW(R_TYPE)(reloc->r_info) == ELF_MACHINE_JMP_SLOT);
@ -110,6 +116,12 @@ profile_fixup (
ElfW(Addr) *resultp;
ElfW(Addr) value;
/* The use of `alloca' here looks ridiculous but it helps. The goal is
to prevent the function from being inlined, and thus optimized out.
There is no official way to do this so we use this trick. gcc never
inlines functions which use `alloca'. */
alloca (sizeof (int));
/* This is the address in the array where we store the result of previous
relocations. */
resultp = &l->l_reloc_result[reloc_offset / sizeof (PLTREL)];