diff options
Diffstat (limited to 'cipher/rijndael.c')
| -rw-r--r-- | cipher/rijndael.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/cipher/rijndael.c b/cipher/rijndael.c index ade41c9d..7ebf3293 100644 --- a/cipher/rijndael.c +++ b/cipher/rijndael.c @@ -665,8 +665,25 @@ do_encrypt (const RIJNDAEL_context *ctx, unsigned char *bx, const unsigned char *ax) { #ifdef USE_AMD64_ASM +# ifdef HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS return _gcry_aes_amd64_encrypt_block(ctx->keyschenc, bx, ax, ctx->rounds, encT); +# else + /* Call SystemV ABI function without storing non-volatile XMM registers, + * as target function does not use vector instruction sets. */ + uintptr_t ret; + asm ("movq %[encT], %%r8\n\t" + "callq *%[ret]\n\t" + : [ret] "=a" (ret) + : "0" (_gcry_aes_amd64_encrypt_block), + "D" (ctx->keyschenc), + "S" (bx), + "d" (ax), + "c" (ctx->rounds), + [encT] "r" (encT) + : "cc", "memory", "r8", "r9", "r10", "r11"); + return ret; +# endif /* HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS */ #elif defined(USE_ARM_ASM) return _gcry_aes_arm_encrypt_block(ctx->keyschenc, bx, ax, ctx->rounds, encT); #else @@ -1008,8 +1025,25 @@ do_decrypt (const RIJNDAEL_context *ctx, unsigned char *bx, const unsigned char *ax) { #ifdef USE_AMD64_ASM +# ifdef HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS return _gcry_aes_amd64_decrypt_block(ctx->keyschdec, bx, ax, ctx->rounds, &dec_tables); +# else + /* Call SystemV ABI function without storing non-volatile XMM registers, + * as target function does not use vector instruction sets. */ + uintptr_t ret; + asm ("movq %[dectabs], %%r8\n\t" + "callq *%[ret]\n\t" + : [ret] "=a" (ret) + : "0" (_gcry_aes_amd64_decrypt_block), + "D" (ctx->keyschdec), + "S" (bx), + "d" (ax), + "c" (ctx->rounds), + [dectabs] "r" (&dec_tables) + : "cc", "memory", "r8", "r9", "r10", "r11"); + return ret; +# endif /* HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS */ #elif defined(USE_ARM_ASM) return _gcry_aes_arm_decrypt_block(ctx->keyschdec, bx, ax, ctx->rounds, &dec_tables); |