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

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Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
This commit is contained in:
Andy Polyakov 2016-08-27 20:47:57 +02:00
parent f879d5ff38
commit 68b4a6e91f
2 changed files with 3 additions and 3 deletions
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2
crypto/bn/asm/x86_64-gcc.c
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@ -203,7 +203,7 @@ BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d)
BN_ULONG ret, waste;
asm("divq %4":"=a"(ret), "=d"(waste)
: "a"(l), "d"(h), "g"(d)
: "a"(l), "d"(h), "r"(d)
: "cc");
return ret;

4
crypto/bn/bn_div.c
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@ -105,7 +105,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
({ asm volatile ( \
"divl %4" \
: "=a"(q), "=d"(rem) \
: "a"(n1), "d"(n0), "g"(d0) \
: "a"(n1), "d"(n0), "r"(d0) \
: "cc"); \
q; \
})
@ -120,7 +120,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
({ asm volatile ( \
"divq %4" \
: "=a"(q), "=d"(rem) \
: "a"(n1), "d"(n0), "g"(d0) \
: "a"(n1), "d"(n0), "r"(d0) \
: "cc"); \
q; \
})