adjust inline asm requiring constants

In order to ensure that the shift is within range, convert the inline assembly
routines into macros with compound statements.

Author: compnerd

src/headers/tomcrypt_macros.h

@@ -264,21 +264,22 @@ static inline ulong32 ROR(ulong32 word, int i)
 
 #ifndef LTC_NO_ROLC
 
-static inline ulong32 ROLc(ulong32 word, const int i)
-{
-   asm ("roll %2,%0"
-      :"=r" (word)
-      :"0" (word),"I" (i));
-   return word;
-}
-
-static inline ulong32 RORc(ulong32 word, const int i)
-{
-   asm ("rorl %2,%0"
-      :"=r" (word)
-      :"0" (word),"I" (i));
-   return word;
-}
+#define ROLc(word,i) ({ \
+   ulong32 __ROLc_tmp = word; \
+   __asm__ ("roll %2, %0" : \
+            "=r" (__ROLc_tmp) : \
+            "0" (__ROLc_tmp), \
+            "I" (i)); \
+            __ROLc_tmp; \
+   })
+#define RORc(word,i) ({ \
+   ulong32 __RORc_tmp = word; \
+   __asm__ ("rorl %2, %0" : \
+            "=r" (__RORc_tmp) : \
+            "0" (__RORc_tmp), \
+            "I" (i)); \
+            __RORc_tmp; \
+   })
 
 #else
 
@@ -363,21 +364,22 @@ static inline ulong64 ROR64(ulong64 word, int i)
 
 #ifndef LTC_NO_ROLC
 
-static inline ulong64 ROL64c(ulong64 word, const int i)
-{
-   asm("rolq %2,%0"
-      :"=r" (word)
-      :"0" (word),"J" (i));
-   return word;
-}
-
-static inline ulong64 ROR64c(ulong64 word, const int i)
-{
-   asm("rorq %2,%0"
-      :"=r" (word)
-      :"0" (word),"J" (i));
-   return word;
-}
+#define ROL64c(word,i) ({ \
+   ulong64 __ROL64c_tmp = word; \
+   __asm__ ("rolq %2, %0" : \
+            "=r" (__ROL64c_tmp) : \
+            "0" (__ROL64c_tmp), \
+            "J" (i)); \
+            __ROL64c_tmp; \
+   })
+#define ROR64c(word,i) ({ \
+   ulong64 __ROR64c_tmp = word; \
+   __asm__ ("rorq %2, %0" : \
+            "=r" (__ROR64c_tmp) : \
+            "0" (__ROR64c_tmp), \
+            "J" (i)); \
+            __ROR64c_tmp; \
+   })
 
 #else /* LTC_NO_ROLC */