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crypto/bn/*: x86[_64] division instruction doesn't handle constants, change constraint from 'g' to 'rm'.

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(Imported from upstream's 2a20b6d9731488bcb500e58a434375f59fb9adcc)

Change-Id: If3db4dac3d4cd675cf7854c4e154823d25d00eb9
Reviewed-on: https://boringssl-review.googlesource.com/10921
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This commit is contained in:
Steven Valdez 2016-09-08 14:54:13 -04:00 committed by CQ bot account: commit-bot@chromium.org
parent 4709203de6
commit ed6c5d3910
1 changed files with 2 additions and 2 deletions
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4
crypto/bn/div.c
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@ -158,13 +158,13 @@ static inline void bn_div_rem_words(BN_ULONG *quotient_out, BN_ULONG *rem_out,
__asm__ volatile (
"divl %4"
: "=a"(*quotient_out), "=d"(*rem_out)
: "a"(n1), "d"(n0), "g"(d0)
: "a"(n1), "d"(n0), "rm"(d0)
: "cc" );
#elif !defined(OPENSSL_NO_ASM) && defined(OPENSSL_X86_64) && defined(__GNUC__)
__asm__ volatile (
"divq %4"
: "=a"(*quotient_out), "=d"(*rem_out)
: "a"(n1), "d"(n0), "g"(d0)
: "a"(n1), "d"(n0), "rm"(d0)
: "cc" );
#else
#if defined(BN_ULLONG)