Update GCC clobber list for SHA-256 and SHA-512 (PR #1139)

* Clear documentation warning

* Update GCC clobber list for SHA-256 and SHA-512
  Also see PR #1133 and GH #1134

1 files changed, 8 insertions, 4 deletions

diff --git a/sha.cpp b/sha.cpp
index 3388a442..d04d8046 100644
--- a/sha.cpp
+++ b/sha.cpp
@@ -825,12 +825,14 @@ INTEL_NOPREFIX
     ATT_PREFIX

     :

     : "c" (state), "d" (data), "S" (SHA256_K+48), "D" (len)

-    #if CRYPTOPP_BOOL_X64

+    #if CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64

         , "m" (workspace[0])

     #endif

-    : "memory", "cc", "%eax"

-    #if CRYPTOPP_BOOL_X64

+    : "memory", "cc", "%eax", "%xmm0", "%xmm1", PERCENT_REG(AS_REG_7)

+    #if CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64

         , "%rbx", "%r8", "%r10"

+    #else

+        , "%ebx"

     #endif

     );

 #endif

@@ -1294,7 +1296,9 @@ void CRYPTOPP_FASTCALL SHA512_HashBlock_SSE2(word64 *state, const word64 *data)
     ATT_PREFIX

         :

         : "a" (SHA512_K), "c" (state), "d" (data)

-        : "%esi", "%edi", "memory", "cc"

+        : "%ebx", "%esi", "%edi", "%mm0", "%mm1", "%mm2", "%mm3", "%mm4", "%mm5",

+          "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7",

+          "memory", "cc"

     );

 #else

     AS1(    pop        edi)