Index: /trunk/include/iprt/asm.h
===================================================================
--- /trunk/include/iprt/asm.h	(revision 58711)
+++ /trunk/include/iprt/asm.h	(revision 58712)
@@ -187,4 +187,6 @@
 #elif RT_INLINE_ASM_USES_INTRIN
 # define ASMCompilerBarrier()   do { _ReadWriteBarrier(); } while (0)
+#elif defined(__WATCOMC__)
+void ASMCompilerBarrier(void);
 #else /* 2003 should have _ReadWriteBarrier() but I guess we're at 2002 level then... */
 DECLINLINE(void) ASMCompilerBarrier(void)
@@ -4478,7 +4480,7 @@
  */
 #if RT_INLINE_ASM_EXTERNAL
-DECLASM(int) ASMBitFirstClear(const volatile void *pvBitmap, uint32_t cBits);
-#else
-DECLINLINE(int) ASMBitFirstClear(const volatile void *pvBitmap, uint32_t cBits)
+DECLASM(int32_t) ASMBitFirstClear(const volatile void *pvBitmap, uint32_t cBits);
+#else
+DECLINLINE(int32_t) ASMBitFirstClear(const volatile void *pvBitmap, uint32_t cBits)
 {
     if (cBits)
@@ -4633,7 +4635,7 @@
  */
 #if RT_INLINE_ASM_EXTERNAL
-DECLASM(int) ASMBitFirstSet(const volatile void *pvBitmap, uint32_t cBits);
-#else
-DECLINLINE(int) ASMBitFirstSet(const volatile void *pvBitmap, uint32_t cBits)
+DECLASM(int32_t) ASMBitFirstSet(const volatile void *pvBitmap, uint32_t cBits);
+#else
+DECLINLINE(int32_t) ASMBitFirstSet(const volatile void *pvBitmap, uint32_t cBits)
 {
     if (cBits)
@@ -4988,16 +4990,20 @@
  * @param   cShift              How many bits to rotate by.
  */
+#ifdef __WATCOMC__
+DECLASM(uint32_t) ASMRotateLeftU32(uint32_t u32, unsigned cShift);
+#else
 DECLINLINE(uint32_t) ASMRotateLeftU32(uint32_t u32, uint32_t cShift)
 {
-#if RT_INLINE_ASM_USES_INTRIN
+# if RT_INLINE_ASM_USES_INTRIN
     return _rotl(u32, cShift);
-#elif RT_INLINE_ASM_GNU_STYLE && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
+# elif RT_INLINE_ASM_GNU_STYLE && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
     __asm__ __volatile__("roll %b1, %0" : "=g" (u32) : "Ic" (cShift), "0" (u32));
     return u32;
-#else
+# else
     cShift &= 31;
     return (u32 << cShift) | (u32 >> (32 - cShift));
-#endif
-}
+# endif
+}
+#endif
 
 
@@ -5009,16 +5015,20 @@
  * @param   cShift              How many bits to rotate by.
  */
+#ifdef __WATCOMC__
+DECLASM(uint32_t) ASMRotateRightU32(uint32_t u32, unsigned cShift);
+#else
 DECLINLINE(uint32_t) ASMRotateRightU32(uint32_t u32, uint32_t cShift)
 {
-#if RT_INLINE_ASM_USES_INTRIN
+# if RT_INLINE_ASM_USES_INTRIN
     return _rotr(u32, cShift);
-#elif RT_INLINE_ASM_GNU_STYLE && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
+# elif RT_INLINE_ASM_GNU_STYLE && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
     __asm__ __volatile__("rorl %b1, %0" : "=g" (u32) : "Ic" (cShift), "0" (u32));
     return u32;
-#else
+# else
     cShift &= 31;
     return (u32 >> cShift) | (u32 << (32 - cShift));
-#endif
-}
+# endif
+}
+#endif
 
 
@@ -5099,4 +5109,14 @@
 
 
+/*
+ * Include #pragma aux definitions for Watcom C/C++.
+ */
+#if defined(__WATCOMC__) && ARCH_BITS == 16 && defined(RT_ARCH_X86)
+# include "asm-watcom-x86-16.h"
+#elif defined(__WATCOMC__) && ARCH_BITS == 32 && defined(RT_ARCH_X86)
+# include "asm-watcom-x86-32.h"
+#endif
+
+
 /** @} */