/** @file * IPRT - Assembly Functions, x86 16-bit Watcom C/C++ pragma aux. */ /* * Copyright (C) 2006-2017 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_asm_h # error "Don't include this header directly." #endif #ifndef ___iprt_asm_watcom_x86_16_h #define ___iprt_asm_watcom_x86_16_h /* * Turns out we cannot use 'ds' for segment stuff here because the compiler * seems to insists on loading the DGROUP segment into 'ds' before calling * stuff when using -ecc. Using 'es' instead as this seems to work fine. * * 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_16_WITH_PRAGMAS # if 0 /* overkill version. */ # pragma aux ASMCompilerBarrier = \ "nop" \ parm [] \ modify exact [ax bx cx dx es ds]; # else # pragma aux ASMCompilerBarrier = \ "" \ parm [] \ modify exact []; # endif #endif #undef ASMNopPause #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMNopPause = \ ".686p" \ ".xmm2" \ "pause" \ parm [] nomemory \ modify exact [] nomemory; #endif #undef ASMAtomicXchgU8 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicXchgU8 = \ "xchg es:[bx], al" \ parm [es bx] [al] \ value [al] \ modify exact [al]; #endif #undef ASMAtomicXchgU16 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicXchgU16 = \ "xchg es:[bx], ax" \ parm [es bx] [ax] \ value [ax] \ modify exact [ax]; #endif #undef ASMAtomicXchgU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicXchgU32 = \ ".386" \ "shl ecx, 16" \ "mov cx, ax" \ "xchg es:[bx], ecx" \ "mov eax, ecx" \ "shr ecx, 16" \ parm [es bx] [ax cx] \ value [ax cx] \ modify exact [ax cx]; #endif #undef ASMAtomicXchgU64 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicXchgU64 = \ ".586" \ "shl eax, 16" \ "mov ax, bx" /* eax = high dword */ \ "shl ecx, 16" \ "mov cx, dx" /* ecx = low dword */ \ "mov ebx, ecx" /* ebx = low */ \ "mov ecx, eax" /* ecx = high */ \ "try_again:" \ "lock cmpxchg8b es:[si]" \ "jnz try_again" \ "xchg eax, edx" \ "mov ebx, eax" \ "shr eax, 16" \ "mov ecx, edx" \ "shr ecx, 16" \ parm [es si] [dx cx bx ax] \ value [dx cx bx ax] \ modify exact [dx cx bx ax]; #endif #undef ASMAtomicCmpXchgU8 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicCmpXchgU8 = \ ".486" \ "lock cmpxchg es:[bx], cl" \ "setz al" \ parm [es bx] [cl] [al] \ value [al] \ modify exact [al]; #endif #undef ASMAtomicCmpXchgU16 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicCmpXchgU16 = \ ".486" \ "lock cmpxchg es:[bx], cx" \ "setz al" \ parm [es bx] [cx] [ax] \ value [al] \ modify exact [ax]; #endif #undef ASMAtomicCmpXchgU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicCmpXchgU32 = \ ".486" \ "shl ecx, 16" \ "mov cx, dx" \ "shl eax, 16" \ "mov ax, di" \ "rol eax, 16" \ "lock cmpxchg es:[bx], ecx" \ "setz al" \ parm [es bx] [cx dx] [ax di] \ value [al] \ modify exact [ax cx]; #endif /* ASMAtomicCmpXchgU64: External assembly implementation, too few registers for parameters. */ /* ASMAtomicCmpXchgExU32: External assembly implementation, too few registers for parameters. */ /* ASMAtomicCmpXchgExU64: External assembly implementation, too few registers for parameters. */ #undef ASMSerializeInstructionCpuId #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMSerializeInstructionCpuId = \ ".586" \ "xor eax, eax" \ "cpuid" \ parm [] \ modify exact [ax bx cx dx]; #endif #undef ASMSerializeInstructionIRet #ifdef IPRT_ASM_WATCOM_X86_16_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_16_WITH_PRAGMAS #pragma aux ASMSerializeInstructionRdTscp = \ 0x0f 0x01 0xf9 \ parm [] \ modify exact [ax dx cx]; #endif #undef ASMAtomicReadU64 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicReadU64 = \ ".586" \ "xor eax, eax" \ "xor edx, edx" \ "xor ebx, ebx" \ "xor ecx, ecx" \ "lock cmpxchg8b es:[si]" \ "xchg eax, edx" \ "mov ebx, eax" \ "shr eax, 16" \ "mov ecx, edx" \ "shr ecx, 16" \ parm [es si] \ value [dx cx bx ax] \ modify exact [dx cx bx ax]; #endif #undef ASMAtomicUoReadU64 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicUoReadU64 = \ ".586" \ "xor eax, eax" \ "xor edx, edx" \ "xor ebx, ebx" \ "xor ecx, ecx" \ "lock cmpxchg8b es:[si]" \ "xchg eax, edx" \ "mov ebx, eax" \ "shr eax, 16" \ "mov ecx, edx" \ "shr ecx, 16" \ parm [es si] \ value [dx cx bx ax] \ modify exact [dx cx bx ax]; #endif #undef ASMAtomicAddU16 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicAddU16 = \ ".486" \ "lock xadd es:[bx], ax" \ parm [es bx] [ax] \ value [ax] \ modify exact [ax]; #endif #undef ASMAtomicAddU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicAddU32 = \ ".486" \ "shl edx, 16" \ "mov dx, ax" \ "lock xadd es:[bx], edx" \ "mov ax, dx" \ "shr edx, 16" \ parm [es bx] [ax dx] \ value [ax dx] \ modify exact [ax dx]; #endif #undef ASMAtomicIncU16 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicIncU16 = \ ".486" \ "mov ax, 1" \ "lock xadd es:[bx], ax" \ "inc ax" \ parm [es bx] \ value [ax] \ modify exact [ax]; #endif #undef ASMAtomicIncU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicIncU32 = \ ".486" \ "mov edx, 1" \ "lock xadd es:[bx], edx" \ "inc edx" \ "mov ax, dx" \ "shr edx, 16" \ parm [es bx] \ value [ax dx] \ modify exact [ax dx]; #endif /* ASMAtomicIncU64: Should be done by C inline or in external file. */ #undef ASMAtomicDecU16 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicDecU16 = \ ".486" \ "mov ax, 0ffffh" \ "lock xadd es:[bx], ax" \ "dec ax" \ parm [es bx] \ value [ax] \ modify exact [ax]; #endif #undef ASMAtomicDecU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicDecU32 = \ ".486" \ "mov edx, 0ffffffffh" \ "lock xadd es:[bx], edx" \ "dec edx" \ "mov ax, dx" \ "shr edx, 16" \ parm [es bx] \ value [ax dx] \ modify exact [ax dx]; #endif /* ASMAtomicDecU64: Should be done by C inline or in external file. */ #undef ASMAtomicOrU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicOrU32 = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock or es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif /* ASMAtomicOrU64: Should be done by C inline or in external file. */ #undef ASMAtomicAndU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicAndU32 = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock and es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif /* ASMAtomicAndU64: Should be done by C inline or in external file. */ #undef ASMAtomicUoOrU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicUoOrU32 = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "or es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif /* ASMAtomicUoOrU64: Should be done by C inline or in external file. */ #undef ASMAtomicUoAndU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicUoAndU32 = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "and es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif /* ASMAtomicUoAndU64: Should be done by C inline or in external file. */ #undef ASMAtomicUoIncU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicUoIncU32 = \ ".486" \ "mov edx, 1" \ "xadd es:[bx], edx" \ "inc edx" \ "mov ax, dx" \ "shr edx, 16" \ parm [es bx] \ value [ax dx] \ modify exact [ax dx]; #endif #undef ASMAtomicUoDecU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicUoDecU32 = \ ".486" \ "mov edx, 0ffffffffh" \ "xadd es:[bx], edx" \ "dec edx" \ "mov ax, dx" \ "shr edx, 16" \ parm [es bx] \ value [ax dx] \ modify exact [ax dx]; #endif #undef ASMMemZeroPage #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMMemZeroPage = \ "mov cx, 2048" \ "xor ax, ax" \ "rep stosw" \ parm [es di] \ modify exact [ax cx di]; # else # pragma aux ASMMemZeroPage = \ "mov ecx, 1024" \ "xor eax, eax" \ "rep stosd" \ parm [es di] \ modify exact [ax cx di]; # endif #endif #undef ASMMemZero32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMMemZero32 = \ "xor ax, ax" \ "shr cx, 1" \ "shr cx, 1" \ "rep stosw" \ parm [es di] [cx] \ modify exact [ax dx cx di]; # else # pragma aux ASMMemZero32 = \ "and ecx, 0ffffh" /* probably not necessary, lazy bird should check... */ \ "shr ecx, 2" \ "xor eax, eax" \ "rep stosd" \ parm [es di] [cx] \ modify exact [ax cx di]; # endif #endif #undef ASMMemFill32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMMemFill32 = \ " shr cx, 1" \ " shr cx, 1" \ " jz done" \ "again:" \ " stosw" \ " xchg ax, dx" \ " stosw" \ " xchg ax, dx" \ " dec cx" \ " jnz again" \ "done:" \ parm [es di] [cx] [ax dx]\ modify exact [cx di]; # else # pragma aux ASMMemFill32 = \ "and ecx, 0ffffh" /* probably not necessary, lazy bird should check... */ \ "shr ecx, 2" \ "shl eax, 16" \ "mov ax, dx" \ "rol eax, 16" \ "rep stosd" \ parm [es di] [cx] [ax dx]\ modify exact [ax cx di]; # endif #endif #undef ASMProbeReadByte #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMProbeReadByte = \ "mov al, es:[bx]" \ parm [es bx] \ value [al] \ modify exact [al]; #endif #undef ASMBitSet #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitSet = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" \ " mov al, 1" \ " shl al, cl" /* al=bitmask */ \ " or es:[bx], al" \ parm [es bx] [ax cx] \ modify exact [ax bx cx]; # else # pragma aux ASMBitSet = \ "shl edx, 16" \ "mov dx, ax" \ "bts es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; # endif #endif #undef ASMAtomicBitSet #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicBitSet = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock bts es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif #undef ASMBitClear #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitClear = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" \ " mov al, 1" \ " shl al, cl" \ " not al" /* al=bitmask */ \ " and es:[bx], al" \ parm [es bx] [ax cx] \ modify exact [ax bx cx]; # else # pragma aux ASMBitClear = \ "shl edx, 16" \ "mov dx, ax" \ "btr es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; # endif #endif #undef ASMAtomicBitClear #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicBitClear = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock btr es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif #undef ASMBitToggle #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitToggle = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" \ " mov al, 1" \ " shl al, cl" /* al=bitmask */ \ " xor es:[bx], al" \ parm [es bx] [ax cx] \ modify exact [ax bx cx]; # else # pragma aux ASMBitToggle = \ "shl edx, 16" \ "mov dx, ax" \ "btc es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; # endif #endif #undef ASMAtomicBitToggle #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicBitToggle = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock btc es:[bx], edx" \ parm [es bx] [ax dx] \ modify exact [dx]; #endif #undef ASMBitTestAndSet #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitTestAndSet = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" /* cl=byte shift count */ \ " mov ah, 1" \ " shl ah, cl" /* ah=bitmask */ \ " mov al, es:[bx]" \ " or ah, al" \ " mov es:[bx], ah" \ " shr al, cl" \ " and al, 1" \ parm [es bx] [ax cx] \ value [al] \ modify exact [ax bx cx]; # else # pragma aux ASMBitTestAndSet = \ "shl edx, 16" \ "mov dx, ax" \ "bts es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] \ value [al] \ modify exact [ax dx]; # endif #endif #undef ASMAtomicBitTestAndSet #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicBitTestAndSet = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock bts es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] \ value [al] \ modify exact [ax dx]; #endif #undef ASMBitTestAndClear #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitTestAndClear = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" /* cl=byte shift count */ \ " mov ah, 1" \ " shl ah, cl" \ " not ah" /* ah=bitmask */ \ " mov al, es:[bx]" \ " and ah, al" \ " mov es:[bx], ah" \ " shr al, cl" \ " and al, 1" \ parm [es bx] [ax cx] \ value [al] \ modify exact [ax bx cx]; # else # pragma aux ASMBitTestAndClear = \ "shl edx, 16" \ "mov dx, ax" \ "btr es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] \ value [al] \ modify exact [ax dx]; # endif #endif #undef ASMAtomicBitTestAndClear #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicBitTestAndClear = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock btr es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] \ value [al] \ modify exact [ax dx]; #endif #undef ASMBitTestAndToggle #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitTestAndToggle = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" /* cl=byte shift count */ \ " mov ah, 1" \ " shl ah, cl" /* ah=bitmask */ \ " mov al, es:[bx]" \ " xor ah, al" \ " mov es:[bx], ah" \ " shr al, cl" \ " and al, 1" \ parm [es bx] [ax cx] \ value [al] \ modify exact [ax bx cx]; # else # pragma aux ASMBitTestAndToggle = \ "shl edx, 16" \ "mov dx, ax" \ "btc es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] \ value [al] \ modify exact [ax dx]; # endif #endif #undef ASMAtomicBitTestAndToggle #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMAtomicBitTestAndToggle = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "lock btc es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] \ value [al] \ modify exact [ax dx]; #endif #undef ASMBitTest #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) # pragma aux ASMBitTest = \ " mov ch, cl" /* Only the three lowest bits are relevant due to 64KB segments */ \ " mov cl, 5" \ " shl ch, cl" \ " add bh, ch" /* Adjust the pointer. */ \ " mov cl, al" \ " shr ax, 1" /* convert to byte offset */ \ " shr ax, 1" \ " shr ax, 1" \ " add bx, ax" /* adjust pointer again */\ " and cl, 7" \ " mov al, es:[bx]" \ " shr al, cl" \ " and al, 1" \ parm [es bx] [ax cx] \ value [al] \ modify exact [ax bx cx]; # else # pragma aux ASMBitTest = \ "shl edx, 16" \ "mov dx, ax" \ "bt es:[bx], edx" \ "setc al" \ parm [es bx] [ax dx] nomemory \ value [al] \ modify exact [ax dx] nomemory; # endif #endif /* ASMBitFirstClear: External file. */ /* ASMBitNextClear: External file. */ /* ASMBitFirstSet: External file. */ /* ASMBitNextSet: External file. */ #if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) /* ASMBitFirstSetU32: External file. */ #else # undef ASMBitFirstSetU32 # ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # pragma aux ASMBitFirstSetU32 = \ "shl edx, 16" \ "mov dx, ax" \ "bsf eax, edx" \ "jz not_found" \ "inc ax" \ "jmp done" \ "not_found:" \ "xor ax, ax" \ "done:" \ parm [ax dx] nomemory \ value [ax] \ modify exact [ax dx] nomemory; # endif #endif #if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) /* ASMBitFirstSetU64: External file. */ #else # undef ASMBitFirstSetU64 # ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # pragma aux ASMBitFirstSetU64 = \ ".386" \ "shl ecx, 16" \ "mov cx, dx" \ "bsf ecx, ecx" \ "jz not_found_low" \ "mov ax, cx" \ "inc ax" \ "jmp done" \ \ "not_found_low:" \ "shr eax, 16" \ "mov ax, bx" \ "bsf eax, eax" \ "jz not_found_high" \ "add ax, 33" \ "jmp done" \ \ "not_found_high:" \ "xor ax, ax" \ "done:" \ parm [dx cx bx ax] nomemory \ value [ax] \ modify exact [ax cx] nomemory; # endif #endif #if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) /* ASMBitFirstSetU16: External file. */ #else # undef ASMBitFirstSetU16 # ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # pragma aux ASMBitFirstSetU16 = \ "bsf ax, ax" \ "jz not_found" \ "inc ax" \ "jmp done" \ "not_found:" \ "xor ax, ax" \ "done:" \ parm [ax] nomemory \ value [ax] \ modify exact [ax] nomemory; # endif #endif #if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) /* ASMBitLastSetU32: External file. */ #else # undef ASMBitLastSetU32 # ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # pragma aux ASMBitLastSetU32 = \ "shl edx, 16" \ "mov dx, ax" \ "bsr eax, edx" \ "jz not_found" \ "inc ax" \ "jmp done" \ "not_found:" \ "xor ax, ax" \ "done:" \ parm [ax dx] nomemory \ value [ax] \ modify exact [ax dx] nomemory; # endif #endif #if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) /* ASMBitLastSetU64: External file. */ #else # undef ASMBitLastSetU64 # ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # pragma aux ASMBitLastSetU64 = \ ".386" \ "shl ecx, 16" \ "mov cx, dx" \ "bsf ecx, ecx" \ "jz not_found_low" \ "mov ax, cx" \ "inc ax" \ "jmp done" \ \ "not_found_low:" \ "shr eax, 16" \ "mov ax, bx" \ "bsf eax, eax" \ "jz not_found_high" \ "add ax, 33" \ "jmp done" \ \ "not_found_high:" \ "xor ax, ax" \ "done:" \ parm [dx cx bx ax] nomemory \ value [ax] \ modify exact [ax cx] nomemory; # endif #endif #if defined(__SW_0) || defined(__SW_1) || defined(__SW_2) /* ASMBitLastSetU16: External file. */ #else # undef ASMBitLastSetU16 # ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS # pragma aux ASMBitLastSetU16 = \ "bsr ax, ax" \ "jz not_found" \ "inc ax" \ "jmp done" \ "not_found:" \ "xor ax, ax" \ "done:" \ parm [ax] nomemory \ value [ax] \ modify exact [ax] nomemory; # endif #endif #undef ASMByteSwapU16 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMByteSwapU16 = \ "xchg al, ah" \ parm [ax] nomemory \ value [ax] \ modify exact [ax] nomemory; #endif #undef ASMByteSwapU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMByteSwapU32 = \ "xchg dh, al" \ "xchg dl, ah" \ parm [ax dx] nomemory \ value [ax dx] \ modify exact [ax dx] nomemory; #endif #undef ASMRotateLeftU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMRotateLeftU32 = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "rol edx, cl" \ "mov eax, edx" \ "shr edx, 16" \ parm [ax dx] [cx] nomemory \ value [ax dx] \ modify exact [ax dx] nomemory; #endif #undef ASMRotateRightU32 #ifdef IPRT_ASM_WATCOM_X86_16_WITH_PRAGMAS #pragma aux ASMRotateRightU32 = \ ".386" \ "shl edx, 16" \ "mov dx, ax" \ "ror edx, cl" \ "mov eax, edx" \ "shr edx, 16" \ parm [ax dx] [cx] nomemory \ value [ax dx] \ modify exact [ax dx] nomemory; #endif #endif