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//
// iop.c
//
// Port input/output
//
// Copyright (C) 2002 Michael Ringgaard. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the project nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
#include <os/krnl.h>
#ifndef VMACH
unsigned char __declspec(naked) inb(port_t port) {
__asm {
mov dx,word ptr [esp + 4]
xor eax,eax
in al,dx
ret
}
}
unsigned short __declspec(naked) inw(port_t port) {
__asm {
mov dx,word ptr [esp + 4]
xor eax,eax
in ax,dx
ret
}
}
unsigned long __declspec(naked) ind(port_t port) {
__asm {
mov dx,word ptr [esp + 4]
in eax,dx
ret
}
}
void insw(port_t port, void *buf, int count) {
__asm {
mov edx, port
mov edi, buf
mov ecx, count
rep insw
}
}
void insd(port_t port, void *buf, int count) {
__asm {
mov edx, port
mov edi, buf
mov ecx, count
rep insd
}
}
unsigned char __declspec(naked) outb(port_t port, unsigned char val) {
__asm {
mov dx,word ptr [esp + 4]
mov al,byte ptr [esp + 8]
out dx, al
ret
}
}
unsigned short __declspec(naked) outw(port_t port, unsigned short val) {
__asm {
mov dx,word ptr [esp + 4]
mov ax,word ptr [esp + 8]
out dx,ax
ret
}
}
unsigned long __declspec(naked) outd(port_t port, unsigned long val) {
__asm {
mov dx,word ptr [esp + 4]
mov eax,[esp + 8]
out dx,eax
ret
}
}
void outsw(port_t port, void *buf, int count) {
__asm {
mov edx, port
mov esi, buf
mov ecx, count
rep outsw
}
}
void outsd(port_t port, void *buf, int count) {
__asm {
mov edx, port
mov esi, buf
mov ecx, count
rep outsd
}
}
#endif