1 files changed, 730 insertions, 0 deletions
diff --git a/include/iprt/asm-watcom-x86-32.h b/include/iprt/asm-watcom-x86-32.h
new file mode 100644
index 00000000..475b4d65
--- /dev/null
+++ b/include/iprt/asm-watcom-x86-32.h
@@ -0,0 +1,730 @@
+/** @file
+ * IPRT - Assembly Functions, x86 32-bit Watcom C/C++ pragma aux.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef IPRT_INCLUDED_asm_watcom_x86_32_h
+#define IPRT_INCLUDED_asm_watcom_x86_32_h
+/* no pragma once */
+
+#ifndef IPRT_INCLUDED_asm_h
+# error "Don't include this header directly."
+#endif
+
+#ifndef __FLAT__
+# error "Only works with flat pointers! (-mf)"
+#endif
+
+/*
+ * Note! The #undef that preceds the #pragma aux statements is for undoing
+ *       the mangling, because the symbol in #pragma aux [symbol] statements
+ *       doesn't get subjected to preprocessing.  This is also why we include
+ *       the watcom header at both the top and the bottom of asm.h file.
+ */
+
+#undef       ASMCompilerBarrier
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+# if 0 /* overkill version. */
+#  pragma aux ASMCompilerBarrier = \
+    "nop" \
+    parm [] \
+    modify exact [eax ebx ecx edx es ds fs gs];
+# else
+#  pragma aux ASMCompilerBarrier = \
+    "" \
+    parm [] \
+    modify exact [];
+# endif
+#endif
+
+#undef      ASMNopPause
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMNopPause = \
+    ".686p" \
+    ".xmm2" \
+    "pause" \
+    parm [] nomemory \
+    modify exact [] nomemory;
+#endif
+
+#undef      ASMAtomicXchgU8
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicXchgU8 = \
+    "xchg [ecx], al" \
+    parm [ecx] [al] \
+    value [al] \
+    modify exact [al];
+#endif
+
+#undef      ASMAtomicXchgU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicXchgU16 = \
+    "xchg [ecx], ax" \
+    parm [ecx] [ax] \
+    value [ax] \
+    modify exact [ax];
+#endif
+
+#undef      ASMAtomicXchgU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicXchgU32 = \
+    "xchg [ecx], eax" \
+    parm [ecx] [eax] \
+    value [eax] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicXchgU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicXchgU64 = \
+    ".586" \
+    "try_again:" \
+    "lock cmpxchg8b [esi]" \
+    "jnz try_again" \
+    parm [esi] [ebx ecx] \
+    value [eax edx] \
+    modify exact [edx ecx ebx eax];
+#endif
+
+#undef      ASMAtomicCmpXchgU8
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicCmpXchgU8 = \
+    ".486" \
+    "lock cmpxchg [edx], cl" \
+    "setz al" \
+    parm [edx] [cl] [al] \
+    value [al] \
+    modify exact [al];
+#endif
+
+#undef      ASMAtomicCmpXchgU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicCmpXchgU16 = \
+    ".486" \
+    "lock cmpxchg [edx], cx" \
+    "setz al" \
+    parm [edx] [cx] [ax] \
+    value [al] \
+    modify exact [ax];
+#endif
+
+#undef      ASMAtomicCmpXchgU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicCmpXchgU32 = \
+    ".486" \
+    "lock cmpxchg [edx], ecx" \
+    "setz al" \
+    parm [edx] [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicCmpXchgU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicCmpXchgU64 = \
+    ".586" \
+    "lock cmpxchg8b [edi]" \
+    "setz al" \
+    parm [edi] [ebx ecx] [eax edx] \
+    value [al] \
+    modify exact [eax edx];
+#endif
+
+#undef      ASMAtomicCmpXchgExU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicCmpXchgExU32 = \
+    ".586" \
+    "lock cmpxchg [edx], ecx" \
+    "mov [edi], eax" \
+    "setz al" \
+    parm [edx] [ecx] [eax] [edi] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicCmpXchgExU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicCmpXchgExU64 = \
+    ".586" \
+    "lock cmpxchg8b [edi]" \
+    "mov [esi], eax" \
+    "mov [esi + 4], edx" \
+    "setz al" \
+    parm [edi] [ebx ecx] [eax edx] [esi] \
+    value [al] \
+    modify exact [eax edx];
+#endif
+
+#undef      ASMSerializeInstructionCpuId
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMSerializeInstructionCpuId = \
+    ".586" \
+    "xor eax, eax" \
+    "cpuid" \
+    parm [] \
+    modify exact [eax ebx ecx edx];
+#endif
+
+#undef ASMSerializeInstructionIRet
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMSerializeInstructionIRet = \
+    "pushf" \
+    "push cs" \
+    "call foo" /* 'push offset done' doesn't work */ \
+    "jmp  done" \
+    "foo:" \
+    "iret" \
+    "done:" \
+    parm [] \
+    modify exact [];
+#endif
+
+#undef      ASMSerializeInstructionRdTscp
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMSerializeInstructionRdTscp = \
+    0x0f 0x01 0xf9 \
+    parm [] \
+    modify exact [eax edx ecx];
+#endif
+
+#undef      ASMAtomicReadU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicReadU64 = \
+    ".586" \
+    "xor eax, eax" \
+    "mov edx, eax" \
+    "mov ebx, eax" \
+    "mov ecx, eax" \
+    "lock cmpxchg8b [edi]" \
+    parm [edi] \
+    value [eax edx] \
+    modify exact [eax ebx ecx edx];
+#endif
+
+#undef      ASMAtomicUoReadU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicUoReadU64 = \
+    ".586" \
+    "xor eax, eax" \
+    "mov edx, eax" \
+    "mov ebx, eax" \
+    "mov ecx, eax" \
+    "lock cmpxchg8b [edi]" \
+    parm [edi] \
+    value [eax edx] \
+    modify exact [eax ebx ecx edx];
+#endif
+
+#undef      ASMAtomicAddU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicAddU16 = \
+    ".486" \
+    "lock xadd [ecx], ax" \
+    parm [ecx] [ax] \
+    value [ax] \
+    modify exact [ax];
+#endif
+
+#undef      ASMAtomicAddU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicAddU32 = \
+    ".486" \
+    "lock xadd [ecx], eax" \
+    parm [ecx] [eax] \
+    value [eax] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicIncU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicIncU16 = \
+    ".486" \
+    "mov ax, 1" \
+    "lock xadd [ecx], ax" \
+    "inc ax" \
+    parm [ecx] \
+    value [ax] \
+    modify exact [ax];
+#endif
+
+#undef      ASMAtomicIncU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicIncU32 = \
+    ".486" \
+    "mov eax, 1" \
+    "lock xadd [ecx], eax" \
+    "inc eax" \
+    parm [ecx] \
+    value [eax] \
+    modify exact [eax];
+#endif
+
+/* ASMAtomicIncU64: Should be done by C inline or in external file. */
+
+#undef      ASMAtomicDecU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicDecU16 = \
+    ".486" \
+    "mov ax, 0ffffh" \
+    "lock xadd [ecx], ax" \
+    "dec ax" \
+    parm [ecx] \
+    value [ax] \
+    modify exact [ax];
+#endif
+
+#undef      ASMAtomicDecU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicDecU32 = \
+    ".486" \
+    "mov eax, 0ffffffffh" \
+    "lock xadd [ecx], eax" \
+    "dec eax" \
+    parm [ecx] \
+    value [eax] \
+    modify exact [eax];
+#endif
+
+/* ASMAtomicDecU64: Should be done by C inline or in external file. */
+
+#undef      ASMAtomicOrU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicOrU32 = \
+    "lock or [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+/* ASMAtomicOrU64: Should be done by C inline or in external file. */
+
+#undef      ASMAtomicAndU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicAndU32 = \
+    "lock and [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+/* ASMAtomicAndU64: Should be done by C inline or in external file. */
+
+#undef      ASMAtomicUoOrU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicUoOrU32 = \
+    "or [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+/* ASMAtomicUoOrU64: Should be done by C inline or in external file. */
+
+#undef      ASMAtomicUoAndU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicUoAndU32 = \
+    "and [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+/* ASMAtomicUoAndU64: Should be done by C inline or in external file. */
+
+#undef      ASMAtomicUoIncU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicUoIncU32 = \
+    ".486" \
+    "xadd [ecx], eax" \
+    "inc eax" \
+    parm [ecx] \
+    value [eax] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicUoDecU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicUoDecU32 = \
+    ".486" \
+    "mov eax, 0ffffffffh" \
+    "xadd [ecx], eax" \
+    "dec eax" \
+    parm [ecx] \
+    value [eax] \
+    modify exact [eax];
+#endif
+
+#undef      ASMMemZeroPage
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMMemZeroPage = \
+    "mov ecx, 1024" \
+    "xor eax, eax" \
+    "rep stosd"  \
+    parm [edi] \
+    modify exact [eax ecx edi];
+#endif
+
+#undef      ASMMemZero32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMMemZero32 = \
+    "shr ecx, 2" \
+    "xor eax, eax" \
+    "rep stosd"  \
+    parm [edi] [ecx] \
+    modify exact [eax ecx edi];
+#endif
+
+#undef      ASMMemFill32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMMemFill32 = \
+    "shr ecx, 2" \
+    "rep stosd"  \
+    parm [edi] [ecx] [eax]\
+    modify exact [ecx edi];
+#endif
+
+#undef      ASMProbeReadByte
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMProbeReadByte = \
+    "mov al, [ecx]" \
+    parm [ecx] \
+    value [al] \
+    modify exact [al];
+#endif
+
+#undef      ASMBitSet
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitSet = \
+    "bts [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+#undef      ASMAtomicBitSet
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicBitSet = \
+    "lock bts [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+#undef      ASMBitClear
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitClear = \
+    "btr [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+#undef      ASMAtomicBitClear
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicBitClear = \
+    "lock btr [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+#undef      ASMBitToggle
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitToggle = \
+    "btc [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+#undef      ASMAtomicBitToggle
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicBitToggle = \
+    "lock btc [ecx], eax" \
+    parm [ecx] [eax] \
+    modify exact [];
+#endif
+
+
+#undef      ASMBitTestAndSet
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitTestAndSet = \
+    "bts [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicBitTestAndSet
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicBitTestAndSet = \
+    "lock bts [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMBitTestAndClear
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitTestAndClear = \
+    "btr [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicBitTestAndClear
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicBitTestAndClear = \
+    "lock btr [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMBitTestAndToggle
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitTestAndToggle = \
+    "btc [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMAtomicBitTestAndToggle
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMAtomicBitTestAndToggle = \
+    "lock btc [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] \
+    value [al] \
+    modify exact [eax];
+#endif
+
+#undef      ASMBitTest
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitTest = \
+    "bt  [ecx], eax" \
+    "setc al" \
+    parm [ecx] [eax] nomemory \
+    value [al] \
+    modify exact [eax] nomemory;
+#endif
+
+#if 0
+/** @todo this is way to much inline assembly, better off in an external function. */
+#undef      ASMBitFirstClear
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitFirstClear = \
+    "mov edx, edi" /* save start of bitmap for later */ \
+    "add ecx, 31" \
+    "shr ecx, 5" /* cDWord = RT_ALIGN_32(cBits, 32) / 32; */  \
+    "mov eax, 0ffffffffh" \
+    "repe scasd" \
+    "je done" \
+    "lea edi, [edi - 4]" /* rewind edi */ \
+    "xor eax, [edi]" /* load inverted bits */ \
+    "sub edi, edx" /* calc byte offset */ \
+    "shl edi, 3" /* convert byte to bit offset */ \
+    "mov edx, eax" \
+    "bsf eax, edx" \
+    "add eax, edi" \
+    "done:" \
+    parm [edi] [ecx] \
+    value [eax] \
+    modify exact [eax ecx edx edi];
+#endif
+
+/* ASMBitNextClear: Too much work, do when needed. */
+
+/** @todo this is way to much inline assembly, better off in an external function. */
+#undef      ASMBitFirstSet
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitFirstSet = \
+    "mov edx, edi" /* save start of bitmap for later */ \
+    "add ecx, 31" \
+    "shr ecx, 5" /* cDWord = RT_ALIGN_32(cBits, 32) / 32; */  \
+    "mov eax, 0ffffffffh" \
+    "repe scasd" \
+    "je done" \
+    "lea edi, [edi - 4]" /* rewind edi */ \
+    "mov eax, [edi]" /* reload previous dword */ \
+    "sub edi, edx" /* calc byte offset */ \
+    "shl edi, 3" /* convert byte to bit offset */ \
+    "mov edx, eax" \
+    "bsf eax, edx" \
+    "add eax, edi" \
+    "done:" \
+    parm [edi] [ecx] \
+    value [eax] \
+    modify exact [eax ecx edx edi];
+#endif
+
+/* ASMBitNextSet: Too much work, do when needed. */
+#else
+/* ASMBitFirstClear: External file.  */
+/* ASMBitNextClear:  External file.  */
+/* ASMBitFirstSet:   External file.  */
+/* ASMBitNextSet:    External file.  */
+#endif
+
+#undef      ASMBitFirstSetU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitFirstSetU32 = \
+    "bsf eax, eax" \
+    "jz  not_found" \
+    "inc eax" \
+    "jmp done" \
+    "not_found:" \
+    "xor eax, eax" \
+    "done:" \
+    parm [eax] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMBitFirstSetU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitFirstSetU64 = \
+    "bsf eax, eax" \
+    "jz  not_found_low" \
+    "inc eax" \
+    "jmp done" \
+    \
+    "not_found_low:" \
+    "bsf eax, edx" \
+    "jz  not_found_high" \
+    "add eax, 33" \
+    "jmp done" \
+    \
+    "not_found_high:" \
+    "xor eax, eax" \
+    "done:" \
+    parm [eax edx] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMBitFirstSetU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitFirstSetU16 = \
+    "movzx eax, ax" \
+    "bsf eax, eax" \
+    "jz  not_found" \
+    "inc eax" \
+    "jmp done" \
+    "not_found:" \
+    "xor eax, eax" \
+    "done:" \
+    parm [ax] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMBitLastSetU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitLastSetU32 = \
+    "bsr eax, eax" \
+    "jz  not_found" \
+    "inc eax" \
+    "jmp done" \
+    "not_found:" \
+    "xor eax, eax" \
+    "done:" \
+    parm [eax] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMBitLastSetU64
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitLastSetU64 = \
+    "bsf eax, eax" \
+    "jz  not_found_low" \
+    "inc eax" \
+    "jmp done" \
+    \
+    "not_found_low:" \
+    "bsf eax, edx" \
+    "jz  not_found_high" \
+    "add eax, 33" \
+    "jmp done" \
+    \
+    "not_found_high:" \
+    "xor eax, eax" \
+    "done:" \
+    parm [eax edx] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMBitLastSetU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMBitLastSetU16 = \
+    "movzx eax, ax" \
+    "bsr eax, eax" \
+    "jz  not_found" \
+    "inc eax" \
+    "jmp done" \
+    "not_found:" \
+    "xor eax, eax" \
+    "done:" \
+    parm [ax] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMByteSwapU16
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMByteSwapU16 = \
+    "ror ax, 8" \
+    parm [ax] nomemory \
+    value [ax] \
+    modify exact [ax] nomemory;
+#endif
+
+#undef      ASMByteSwapU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMByteSwapU32 = \
+    "bswap eax" \
+    parm [eax] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMRotateLeftU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMRotateLeftU32 = \
+    "rol    eax, cl" \
+    parm [eax] [ecx] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#undef      ASMRotateRightU32
+#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
+#pragma aux ASMRotateRightU32 = \
+    "ror    eax, cl" \
+    parm [eax] [ecx] nomemory \
+    value [eax] \
+    modify exact [eax] nomemory;
+#endif
+
+#endif /* !IPRT_INCLUDED_asm_watcom_x86_32_h */
+