Reintroduce though-to-be unused variable in correct place
The variable is a local variable for the i386 bignum assembly only;
introduce it as part of the start/finish macros.
It can be noted that the variable is initialize to 0 within MULADDC_INIT,
so there are no data dependencies across blocks of MULADDC_INIT/CORE/STOP.
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/library/bn_mul.h b/library/bn_mul.h
index b71ddd8..aa1183f 100644
--- a/library/bn_mul.h
+++ b/library/bn_mul.h
@@ -99,6 +99,7 @@
#if defined(__i386__) && defined(__OPTIMIZE__)
#define MULADDC_INIT \
+ { mbedtls_mpi_uint t; \
asm( \
"movl %%ebx, %0 \n\t" \
"movl %5, %%esi \n\t" \
@@ -190,7 +191,8 @@
: "=m" (t), "=m" (c), "=m" (d), "=m" (s) \
: "m" (t), "m" (s), "m" (d), "m" (c), "m" (b) \
: "eax", "ebx", "ecx", "edx", "esi", "edi" \
- );
+ ); } \
+
#else
@@ -202,7 +204,7 @@
: "=m" (t), "=m" (c), "=m" (d), "=m" (s) \
: "m" (t), "m" (s), "m" (d), "m" (c), "m" (b) \
: "eax", "ebx", "ecx", "edx", "esi", "edi" \
- );
+ ); }
#endif /* SSE2 */
#endif /* i386 */