diff options
Diffstat (limited to 'thirdparty/mbedtls/include/mbedtls/bn_mul.h')
| -rw-r--r-- | thirdparty/mbedtls/include/mbedtls/bn_mul.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/thirdparty/mbedtls/include/mbedtls/bn_mul.h b/thirdparty/mbedtls/include/mbedtls/bn_mul.h index f4b2b561d1..b587317d95 100644 --- a/thirdparty/mbedtls/include/mbedtls/bn_mul.h +++ b/thirdparty/mbedtls/include/mbedtls/bn_mul.h @@ -49,7 +49,14 @@ /* armcc5 --gnu defines __GNUC__ but doesn't support GNU's extended asm */ #if defined(__GNUC__) && \ ( !defined(__ARMCC_VERSION) || __ARMCC_VERSION >= 6000000 ) -#if defined(__i386__) + +/* + * Disable use of the i386 assembly code below if option -O0, to disable all + * compiler optimisations, is passed, detected with __OPTIMIZE__ + * This is done as the number of registers used in the assembly code doesn't + * work with the -O0 option. + */ +#if defined(__i386__) && defined(__OPTIMIZE__) #define MULADDC_INIT \ asm( \ @@ -142,7 +149,7 @@ "movl %%esi, %3 \n\t" \ : "=m" (t), "=m" (c), "=m" (d), "=m" (s) \ : "m" (t), "m" (s), "m" (d), "m" (c), "m" (b) \ - : "eax", "ecx", "edx", "esi", "edi" \ + : "eax", "ebx", "ecx", "edx", "esi", "edi" \ ); #else @@ -154,7 +161,7 @@ "movl %%esi, %3 \n\t" \ : "=m" (t), "=m" (c), "=m" (d), "=m" (s) \ : "m" (t), "m" (s), "m" (d), "m" (c), "m" (b) \ - : "eax", "ecx", "edx", "esi", "edi" \ + : "eax", "ebx", "ecx", "edx", "esi", "edi" \ ); #endif /* SSE2 */ #endif /* i386 */ |