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(fixup, profile_fixup): Call alloca to prevent inlining.

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This commit is contained in:
Ulrich Drepper 1999-07-15 11:33:32 +00:00
parent 5a6d39adc1
commit 2295e95813
1 changed files with 12 additions and 0 deletions
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12
elf/dl-runtime.c
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@ -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)];