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https://github.com/reactos/reactos.git
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c2d0d784c7
- Create a branch to do a proper merge of USB work from a trunk base instead of from cmake-bringup - In the future, DO NOT under any circumstances branch another branch. This leads to merge problems! svn path=/branches/usb-bringup-trunk/; revision=55018
211 lines
3.7 KiB
ArmAsm
211 lines
3.7 KiB
ArmAsm
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/ex/i386/ioport.S
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* PURPOSE: FASTCALL Interlocked Functions
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* PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
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*/
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/* INCLUDES ******************************************************************/
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#include <asm.inc>
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#include <ks386.inc>
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/* GLOBALS *******************************************************************/
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PUBLIC _READ_REGISTER_UCHAR@4
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PUBLIC _READ_REGISTER_USHORT@4
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PUBLIC _READ_REGISTER_ULONG@4
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PUBLIC _READ_REGISTER_BUFFER_UCHAR@12
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PUBLIC _READ_REGISTER_BUFFER_USHORT@12
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PUBLIC _READ_REGISTER_BUFFER_ULONG@12
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PUBLIC _WRITE_REGISTER_UCHAR@8
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PUBLIC _WRITE_REGISTER_USHORT@8
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PUBLIC _WRITE_REGISTER_ULONG@8
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PUBLIC _WRITE_REGISTER_BUFFER_UCHAR@12
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PUBLIC _WRITE_REGISTER_BUFFER_USHORT@12
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PUBLIC _WRITE_REGISTER_BUFFER_ULONG@12
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/* FUNCTIONS *****************************************************************/
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.code
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_READ_REGISTER_UCHAR@4:
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/* Return the requested memory location */
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mov edx, [esp+4]
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mov al, [edx]
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ret 4
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_READ_REGISTER_USHORT@4:
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/* Return the requested memory location */
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mov edx, [esp+4]
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mov ax, [edx]
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ret 4
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_READ_REGISTER_ULONG@4:
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/* Return the requested memory location */
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mov edx, [esp+4]
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mov eax, [edx]
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ret 4
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_READ_REGISTER_BUFFER_UCHAR@12:
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/* Save volatiles */
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mov eax, esi
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mov edx, edi
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/* Do the transfer */
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mov ecx, [esp+12]
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mov esi, [esp+4]
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mov edi, [esp+8]
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rep movsb
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/* Restore volatiles and return */
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mov edi, edx
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mov esi, eax
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ret 12
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_READ_REGISTER_BUFFER_USHORT@12:
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/* Save volatiles */
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mov eax, esi
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mov edx, edi
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/* Do the transfer */
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mov ecx, [esp+12]
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mov esi, [esp+4]
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mov edi, [esp+8]
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rep movsw
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/* Restore volatiles and return */
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mov edi, edx
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mov esi, eax
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ret 12
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_READ_REGISTER_BUFFER_ULONG@12:
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/* Save volatiles */
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mov eax, esi
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mov edx, edi
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/* Do the transfer */
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mov ecx, [esp+12]
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mov esi, [esp+4]
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mov edi, [esp+8]
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rep movsd
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/* Restore volatiles and return */
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mov edi, edx
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mov esi, eax
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ret 12
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_WRITE_REGISTER_UCHAR@8:
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/* Write to memory */
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mov edx, [esp+4]
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mov al, [esp+8]
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mov [edx], al
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/* Flush posted write buffers and return */
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lock or [esp+4], edx
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ret 8
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_WRITE_REGISTER_USHORT@8:
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/* Write to memory */
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mov edx, [esp+4]
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mov eax, [esp+8]
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mov [edx], ax
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/* Flush posted write buffers and return */
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lock or [esp+4], edx
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ret 8
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_WRITE_REGISTER_ULONG@8:
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/* Write to memory */
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mov edx, [esp+4]
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mov eax, [esp+8]
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mov [edx], eax
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/* Flush posted write buffers and return */
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lock or [esp+4], edx
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ret 8
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_WRITE_REGISTER_BUFFER_UCHAR@12:
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/* Save volatiles */
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mov eax, esi
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mov edx, edi
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/* Do the transfer */
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mov ecx, [esp+12]
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mov esi, [esp+8]
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mov edi, [esp+4]
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rep movsb
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/* Flush posted write buffers */
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lock or [esp+4], ecx
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/* Restore volatiles and return */
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mov edi, edx
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mov esi, eax
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ret 12
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_WRITE_REGISTER_BUFFER_USHORT@12:
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/* Save volatiles */
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mov eax, esi
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mov edx, edi
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/* Do the transfer */
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mov ecx, [esp+12]
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mov esi, [esp+8]
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mov edi, [esp+4]
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rep movsw
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/* Flush posted write buffers */
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lock or [esp+4], ecx
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/* Restore volatiles and return */
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mov edi, edx
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mov esi, eax
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ret 12
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_WRITE_REGISTER_BUFFER_ULONG@12:
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/* Save volatiles */
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mov eax, esi
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mov edx, edi
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/* Do the transfer */
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mov ecx, [esp+12]
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mov esi, [esp+8]
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mov edi, [esp+4]
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rep movsd
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/* Flush posted write buffers */
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lock or [esp+4], ecx
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/* Restore volatiles and return */
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mov edi, edx
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mov esi, eax
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ret 12
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END
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/* EOF */
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