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Adjust stack pointer in AES-NI CBC decryption.

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This change adjusts the stack pointer during CBC decryption. The code
was previously using the red zone across function calls and valgrind
thinks that the "unused" stack is undefined after a function call.
This commit is contained in:
Adam Langley 2014-06-20 12:00:00 -07:00
parent 409766d218
commit 77b7e63311
1 changed files with 16 additions and 0 deletions
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16
crypto/aes/asm/aesni-x86_64.pl
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@ -2186,6 +2186,14 @@ $code.=<<___ if ($win64);
movaps %xmm9,0x30(%rsp) movaps %xmm9,0x30(%rsp)
.Lcbc_decrypt_body: .Lcbc_decrypt_body:
___ ___
if (!$win64) {
$code.=<<___;
subq \$24,%rsp
___
$reserved=0;
}
$code.=<<___; $code.=<<___;
movups ($ivp),$iv movups ($ivp),$iv
mov $rnds_,$rounds mov $rnds_,$rounds
@ -2446,6 +2454,14 @@ $code.=<<___ if ($win64);
movaps 0x30(%rsp),%xmm9 movaps 0x30(%rsp),%xmm9
lea 0x58(%rsp),%rsp lea 0x58(%rsp),%rsp
___ ___
if (!$win64) {
$code.=<<___;
addq \$24,%rsp
___
$reserved=-24
}
$code.=<<___; $code.=<<___;
.Lcbc_ret: .Lcbc_ret:
ret ret