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Openwrt/target/linux/generic/backport-5.4/080-wireguard-0055-crypto-x86-curve25519-leave-r12-as-spare-register.patch
Jason A. Donenfeld d540725871 kernel-5.4: backport fd16931a2f51 for chacha neon 
Without this patch, the chacha block counter is not incremented on neon
rounds, resulting in incorrect calculations and corrupt packets.

This also switches to using `--no-numbered --zero-commit` so that future
diffs are smaller.

Reported-by: Hans Geiblinger <cybrnook2002@yahoo.com>
Reviewed-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Cc: David Bauer <mail@david-bauer.net>
Cc: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-02 09:30:22 +01:00

377 lines
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sun, 1 Mar 2020 16:06:56 +0800
Subject: [PATCH] crypto: x86/curve25519 - leave r12 as spare register
commit dc7fc3a53ae158263196b1892b672aedf67796c5 upstream.
This updates to the newer register selection proved by HACL*, which
leads to a more compact instruction encoding, and saves around 100
cycles.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
arch/x86/crypto/curve25519-x86_64.c | 110 ++++++++++++++--------------
1 file changed, 55 insertions(+), 55 deletions(-)
--- a/arch/x86/crypto/curve25519-x86_64.c
+++ b/arch/x86/crypto/curve25519-x86_64.c
@@ -167,28 +167,28 @@ static inline void fmul(u64 *out, const
" movq 0(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " movq %%r8, 0(%0);"
" mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " movq %%r10, 8(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;"
/* Compute src1[1] * src2 */
" movq 8(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 8(%0), %%r8;" " movq %%r8, 8(%0);"
- " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 16(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " mov $0, %%r8;"
+ " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 16(%0);"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " mov $0, %%r8;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;"
/* Compute src1[2] * src2 */
" movq 16(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 16(%0), %%r8;" " movq %%r8, 16(%0);"
- " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 24(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " mov $0, %%r8;"
+ " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 24(%0);"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " mov $0, %%r8;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;"
/* Compute src1[3] * src2 */
" movq 24(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 24(%0), %%r8;" " movq %%r8, 24(%0);"
- " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 32(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " movq %%r12, 40(%0);" " mov $0, %%r8;"
+ " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 32(%0);"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " movq %%rbx, 40(%0);" " mov $0, %%r8;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " movq %%r14, 48(%0);" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;" " movq %%rax, 56(%0);"
/* Line up pointers */
@@ -202,11 +202,11 @@ static inline void fmul(u64 *out, const
" mulxq 32(%1), %%r8, %%r13;"
" xor %3, %3;"
" adoxq 0(%1), %%r8;"
- " mulxq 40(%1), %%r9, %%r12;"
+ " mulxq 40(%1), %%r9, %%rbx;"
" adcx %%r13, %%r9;"
" adoxq 8(%1), %%r9;"
" mulxq 48(%1), %%r10, %%r13;"
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" adoxq 16(%1), %%r10;"
" mulxq 56(%1), %%r11, %%rax;"
" adcx %%r13, %%r11;"
@@ -231,7 +231,7 @@ static inline void fmul(u64 *out, const
" movq %%r8, 0(%0);"
: "+&r" (tmp), "+&r" (f1), "+&r" (out), "+&r" (f2)
:
- : "%rax", "%rdx", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "memory", "cc"
+ : "%rax", "%rdx", "%r8", "%r9", "%r10", "%r11", "%rbx", "%r13", "%r14", "memory", "cc"
);
}
@@ -248,28 +248,28 @@ static inline void fmul2(u64 *out, const
" movq 0(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " movq %%r8, 0(%0);"
" mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " movq %%r10, 8(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;"
/* Compute src1[1] * src2 */
" movq 8(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 8(%0), %%r8;" " movq %%r8, 8(%0);"
- " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 16(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " mov $0, %%r8;"
+ " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 16(%0);"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " mov $0, %%r8;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;"
/* Compute src1[2] * src2 */
" movq 16(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 16(%0), %%r8;" " movq %%r8, 16(%0);"
- " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 24(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " mov $0, %%r8;"
+ " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 24(%0);"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " mov $0, %%r8;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;"
/* Compute src1[3] * src2 */
" movq 24(%1), %%rdx;"
" mulxq 0(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 24(%0), %%r8;" " movq %%r8, 24(%0);"
- " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 32(%0);"
- " mulxq 16(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " movq %%r12, 40(%0);" " mov $0, %%r8;"
+ " mulxq 8(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 32(%0);"
+ " mulxq 16(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " movq %%rbx, 40(%0);" " mov $0, %%r8;"
" mulxq 24(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " movq %%r14, 48(%0);" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;" " movq %%rax, 56(%0);"
@@ -279,28 +279,28 @@ static inline void fmul2(u64 *out, const
" movq 32(%1), %%rdx;"
" mulxq 32(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " movq %%r8, 64(%0);"
" mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " movq %%r10, 72(%0);"
- " mulxq 48(%3), %%r12, %%r13;" " adox %%r11, %%r12;"
+ " mulxq 48(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;"
" mulxq 56(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;"
/* Compute src1[1] * src2 */
" movq 40(%1), %%rdx;"
" mulxq 32(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 72(%0), %%r8;" " movq %%r8, 72(%0);"
- " mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 80(%0);"
- " mulxq 48(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " mov $0, %%r8;"
+ " mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 80(%0);"
+ " mulxq 48(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " mov $0, %%r8;"
" mulxq 56(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;"
/* Compute src1[2] * src2 */
" movq 48(%1), %%rdx;"
" mulxq 32(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 80(%0), %%r8;" " movq %%r8, 80(%0);"
- " mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 88(%0);"
- " mulxq 48(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " mov $0, %%r8;"
+ " mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 88(%0);"
+ " mulxq 48(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " mov $0, %%r8;"
" mulxq 56(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;"
/* Compute src1[3] * src2 */
" movq 56(%1), %%rdx;"
" mulxq 32(%3), %%r8, %%r9;" " xor %%r10, %%r10;" " adcxq 88(%0), %%r8;" " movq %%r8, 88(%0);"
- " mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%r12, %%r10;" " movq %%r10, 96(%0);"
- " mulxq 48(%3), %%r12, %%r13;" " adox %%r11, %%r12;" " adcx %%r14, %%r12;" " movq %%r12, 104(%0);" " mov $0, %%r8;"
+ " mulxq 40(%3), %%r10, %%r11;" " adox %%r9, %%r10;" " adcx %%rbx, %%r10;" " movq %%r10, 96(%0);"
+ " mulxq 48(%3), %%rbx, %%r13;" " adox %%r11, %%rbx;" " adcx %%r14, %%rbx;" " movq %%rbx, 104(%0);" " mov $0, %%r8;"
" mulxq 56(%3), %%r14, %%rdx;" " adox %%r13, %%r14;" " adcx %%rax, %%r14;" " movq %%r14, 112(%0);" " mov $0, %%rax;"
" adox %%rdx, %%rax;" " adcx %%r8, %%rax;" " movq %%rax, 120(%0);"
/* Line up pointers */
@@ -314,11 +314,11 @@ static inline void fmul2(u64 *out, const
" mulxq 32(%1), %%r8, %%r13;"
" xor %3, %3;"
" adoxq 0(%1), %%r8;"
- " mulxq 40(%1), %%r9, %%r12;"
+ " mulxq 40(%1), %%r9, %%rbx;"
" adcx %%r13, %%r9;"
" adoxq 8(%1), %%r9;"
" mulxq 48(%1), %%r10, %%r13;"
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" adoxq 16(%1), %%r10;"
" mulxq 56(%1), %%r11, %%rax;"
" adcx %%r13, %%r11;"
@@ -347,11 +347,11 @@ static inline void fmul2(u64 *out, const
" mulxq 96(%1), %%r8, %%r13;"
" xor %3, %3;"
" adoxq 64(%1), %%r8;"
- " mulxq 104(%1), %%r9, %%r12;"
+ " mulxq 104(%1), %%r9, %%rbx;"
" adcx %%r13, %%r9;"
" adoxq 72(%1), %%r9;"
" mulxq 112(%1), %%r10, %%r13;"
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" adoxq 80(%1), %%r10;"
" mulxq 120(%1), %%r11, %%rax;"
" adcx %%r13, %%r11;"
@@ -376,7 +376,7 @@ static inline void fmul2(u64 *out, const
" movq %%r8, 32(%0);"
: "+&r" (tmp), "+&r" (f1), "+&r" (out), "+&r" (f2)
:
- : "%rax", "%rdx", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "memory", "cc"
+ : "%rax", "%rdx", "%r8", "%r9", "%r10", "%r11", "%rbx", "%r13", "%r14", "memory", "cc"
);
}
@@ -388,11 +388,11 @@ static inline void fmul_scalar(u64 *out,
asm volatile(
/* Compute the raw multiplication of f1*f2 */
" mulxq 0(%2), %%r8, %%rcx;" /* f1[0]*f2 */
- " mulxq 8(%2), %%r9, %%r12;" /* f1[1]*f2 */
+ " mulxq 8(%2), %%r9, %%rbx;" /* f1[1]*f2 */
" add %%rcx, %%r9;"
" mov $0, %%rcx;"
" mulxq 16(%2), %%r10, %%r13;" /* f1[2]*f2 */
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" mulxq 24(%2), %%r11, %%rax;" /* f1[3]*f2 */
" adcx %%r13, %%r11;"
" adcx %%rcx, %%rax;"
@@ -419,7 +419,7 @@ static inline void fmul_scalar(u64 *out,
" movq %%r8, 0(%1);"
: "+&r" (f2_r)
: "r" (out), "r" (f1)
- : "%rax", "%rcx", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "memory", "cc"
+ : "%rax", "%rcx", "%r8", "%r9", "%r10", "%r11", "%rbx", "%r13", "memory", "cc"
);
}
@@ -520,8 +520,8 @@ static inline void fsqr(u64 *out, const
" mulxq 16(%1), %%r9, %%r10;" " adcx %%r14, %%r9;" /* f[2]*f[0] */
" mulxq 24(%1), %%rax, %%rcx;" " adcx %%rax, %%r10;" /* f[3]*f[0] */
" movq 24(%1), %%rdx;" /* f[3] */
- " mulxq 8(%1), %%r11, %%r12;" " adcx %%rcx, %%r11;" /* f[1]*f[3] */
- " mulxq 16(%1), %%rax, %%r13;" " adcx %%rax, %%r12;" /* f[2]*f[3] */
+ " mulxq 8(%1), %%r11, %%rbx;" " adcx %%rcx, %%r11;" /* f[1]*f[3] */
+ " mulxq 16(%1), %%rax, %%r13;" " adcx %%rax, %%rbx;" /* f[2]*f[3] */
" movq 8(%1), %%rdx;" " adcx %%r15, %%r13;" /* f1 */
" mulxq 16(%1), %%rax, %%rcx;" " mov $0, %%r14;" /* f[2]*f[1] */
@@ -531,12 +531,12 @@ static inline void fsqr(u64 *out, const
" adcx %%r8, %%r8;"
" adox %%rcx, %%r11;"
" adcx %%r9, %%r9;"
- " adox %%r15, %%r12;"
+ " adox %%r15, %%rbx;"
" adcx %%r10, %%r10;"
" adox %%r15, %%r13;"
" adcx %%r11, %%r11;"
" adox %%r15, %%r14;"
- " adcx %%r12, %%r12;"
+ " adcx %%rbx, %%rbx;"
" adcx %%r13, %%r13;"
" adcx %%r14, %%r14;"
@@ -549,7 +549,7 @@ static inline void fsqr(u64 *out, const
" adcx %%rcx, %%r10;" " movq %%r10, 24(%0);"
" movq 16(%1), %%rdx;" " mulx %%rdx, %%rax, %%rcx;" /* f[2]^2 */
" adcx %%rax, %%r11;" " movq %%r11, 32(%0);"
- " adcx %%rcx, %%r12;" " movq %%r12, 40(%0);"
+ " adcx %%rcx, %%rbx;" " movq %%rbx, 40(%0);"
" movq 24(%1), %%rdx;" " mulx %%rdx, %%rax, %%rcx;" /* f[3]^2 */
" adcx %%rax, %%r13;" " movq %%r13, 48(%0);"
" adcx %%rcx, %%r14;" " movq %%r14, 56(%0);"
@@ -565,11 +565,11 @@ static inline void fsqr(u64 *out, const
" mulxq 32(%1), %%r8, %%r13;"
" xor %%rcx, %%rcx;"
" adoxq 0(%1), %%r8;"
- " mulxq 40(%1), %%r9, %%r12;"
+ " mulxq 40(%1), %%r9, %%rbx;"
" adcx %%r13, %%r9;"
" adoxq 8(%1), %%r9;"
" mulxq 48(%1), %%r10, %%r13;"
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" adoxq 16(%1), %%r10;"
" mulxq 56(%1), %%r11, %%rax;"
" adcx %%r13, %%r11;"
@@ -594,7 +594,7 @@ static inline void fsqr(u64 *out, const
" movq %%r8, 0(%0);"
: "+&r" (tmp), "+&r" (f), "+&r" (out)
:
- : "%rax", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "memory", "cc"
+ : "%rax", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r11", "%rbx", "%r13", "%r14", "%r15", "memory", "cc"
);
}
@@ -611,8 +611,8 @@ static inline void fsqr2(u64 *out, const
" mulxq 16(%1), %%r9, %%r10;" " adcx %%r14, %%r9;" /* f[2]*f[0] */
" mulxq 24(%1), %%rax, %%rcx;" " adcx %%rax, %%r10;" /* f[3]*f[0] */
" movq 24(%1), %%rdx;" /* f[3] */
- " mulxq 8(%1), %%r11, %%r12;" " adcx %%rcx, %%r11;" /* f[1]*f[3] */
- " mulxq 16(%1), %%rax, %%r13;" " adcx %%rax, %%r12;" /* f[2]*f[3] */
+ " mulxq 8(%1), %%r11, %%rbx;" " adcx %%rcx, %%r11;" /* f[1]*f[3] */
+ " mulxq 16(%1), %%rax, %%r13;" " adcx %%rax, %%rbx;" /* f[2]*f[3] */
" movq 8(%1), %%rdx;" " adcx %%r15, %%r13;" /* f1 */
" mulxq 16(%1), %%rax, %%rcx;" " mov $0, %%r14;" /* f[2]*f[1] */
@@ -622,12 +622,12 @@ static inline void fsqr2(u64 *out, const
" adcx %%r8, %%r8;"
" adox %%rcx, %%r11;"
" adcx %%r9, %%r9;"
- " adox %%r15, %%r12;"
+ " adox %%r15, %%rbx;"
" adcx %%r10, %%r10;"
" adox %%r15, %%r13;"
" adcx %%r11, %%r11;"
" adox %%r15, %%r14;"
- " adcx %%r12, %%r12;"
+ " adcx %%rbx, %%rbx;"
" adcx %%r13, %%r13;"
" adcx %%r14, %%r14;"
@@ -640,7 +640,7 @@ static inline void fsqr2(u64 *out, const
" adcx %%rcx, %%r10;" " movq %%r10, 24(%0);"
" movq 16(%1), %%rdx;" " mulx %%rdx, %%rax, %%rcx;" /* f[2]^2 */
" adcx %%rax, %%r11;" " movq %%r11, 32(%0);"
- " adcx %%rcx, %%r12;" " movq %%r12, 40(%0);"
+ " adcx %%rcx, %%rbx;" " movq %%rbx, 40(%0);"
" movq 24(%1), %%rdx;" " mulx %%rdx, %%rax, %%rcx;" /* f[3]^2 */
" adcx %%rax, %%r13;" " movq %%r13, 48(%0);"
" adcx %%rcx, %%r14;" " movq %%r14, 56(%0);"
@@ -651,8 +651,8 @@ static inline void fsqr2(u64 *out, const
" mulxq 48(%1), %%r9, %%r10;" " adcx %%r14, %%r9;" /* f[2]*f[0] */
" mulxq 56(%1), %%rax, %%rcx;" " adcx %%rax, %%r10;" /* f[3]*f[0] */
" movq 56(%1), %%rdx;" /* f[3] */
- " mulxq 40(%1), %%r11, %%r12;" " adcx %%rcx, %%r11;" /* f[1]*f[3] */
- " mulxq 48(%1), %%rax, %%r13;" " adcx %%rax, %%r12;" /* f[2]*f[3] */
+ " mulxq 40(%1), %%r11, %%rbx;" " adcx %%rcx, %%r11;" /* f[1]*f[3] */
+ " mulxq 48(%1), %%rax, %%r13;" " adcx %%rax, %%rbx;" /* f[2]*f[3] */
" movq 40(%1), %%rdx;" " adcx %%r15, %%r13;" /* f1 */
" mulxq 48(%1), %%rax, %%rcx;" " mov $0, %%r14;" /* f[2]*f[1] */
@@ -662,12 +662,12 @@ static inline void fsqr2(u64 *out, const
" adcx %%r8, %%r8;"
" adox %%rcx, %%r11;"
" adcx %%r9, %%r9;"
- " adox %%r15, %%r12;"
+ " adox %%r15, %%rbx;"
" adcx %%r10, %%r10;"
" adox %%r15, %%r13;"
" adcx %%r11, %%r11;"
" adox %%r15, %%r14;"
- " adcx %%r12, %%r12;"
+ " adcx %%rbx, %%rbx;"
" adcx %%r13, %%r13;"
" adcx %%r14, %%r14;"
@@ -680,7 +680,7 @@ static inline void fsqr2(u64 *out, const
" adcx %%rcx, %%r10;" " movq %%r10, 88(%0);"
" movq 48(%1), %%rdx;" " mulx %%rdx, %%rax, %%rcx;" /* f[2]^2 */
" adcx %%rax, %%r11;" " movq %%r11, 96(%0);"
- " adcx %%rcx, %%r12;" " movq %%r12, 104(%0);"
+ " adcx %%rcx, %%rbx;" " movq %%rbx, 104(%0);"
" movq 56(%1), %%rdx;" " mulx %%rdx, %%rax, %%rcx;" /* f[3]^2 */
" adcx %%rax, %%r13;" " movq %%r13, 112(%0);"
" adcx %%rcx, %%r14;" " movq %%r14, 120(%0);"
@@ -694,11 +694,11 @@ static inline void fsqr2(u64 *out, const
" mulxq 32(%1), %%r8, %%r13;"
" xor %%rcx, %%rcx;"
" adoxq 0(%1), %%r8;"
- " mulxq 40(%1), %%r9, %%r12;"
+ " mulxq 40(%1), %%r9, %%rbx;"
" adcx %%r13, %%r9;"
" adoxq 8(%1), %%r9;"
" mulxq 48(%1), %%r10, %%r13;"
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" adoxq 16(%1), %%r10;"
" mulxq 56(%1), %%r11, %%rax;"
" adcx %%r13, %%r11;"
@@ -727,11 +727,11 @@ static inline void fsqr2(u64 *out, const
" mulxq 96(%1), %%r8, %%r13;"
" xor %%rcx, %%rcx;"
" adoxq 64(%1), %%r8;"
- " mulxq 104(%1), %%r9, %%r12;"
+ " mulxq 104(%1), %%r9, %%rbx;"
" adcx %%r13, %%r9;"
" adoxq 72(%1), %%r9;"
" mulxq 112(%1), %%r10, %%r13;"
- " adcx %%r12, %%r10;"
+ " adcx %%rbx, %%r10;"
" adoxq 80(%1), %%r10;"
" mulxq 120(%1), %%r11, %%rax;"
" adcx %%r13, %%r11;"
@@ -756,7 +756,7 @@ static inline void fsqr2(u64 *out, const
" movq %%r8, 32(%0);"
: "+&r" (tmp), "+&r" (f), "+&r" (out)
:
- : "%rax", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "memory", "cc"
+ : "%rax", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r11", "%rbx", "%r13", "%r14", "%r15", "memory", "cc"
);
}
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