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/* $Id: inlines.h $ */
/** @file
* Inline routines for Watcom C.
*/
/*
* Copyright (C) 2010-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#ifndef VBOX_INCLUDED_SRC_PC_BIOS_inlines_h
#define VBOX_INCLUDED_SRC_PC_BIOS_inlines_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
extern unsigned inp(unsigned port);
extern unsigned outp(unsigned port, unsigned value);
extern unsigned inpw(unsigned port);
extern unsigned outpw(unsigned port, unsigned value);
#pragma intrinsic(inp,outp,inpw,outpw)
#define inb(p) inp(p)
#define outb(p, v) outp(p, v)
#define inw(p) inpw(p)
#define outw(p, v) outpw(p, v)
/* Far byte/word/dword access routines. */
inline uint8_t read_byte(uint16_t seg, uint16_t offset)
{
return( *(seg:>(uint8_t *)offset) );
}
inline void write_byte(uint16_t seg, uint16_t offset, uint8_t data)
{
*(seg:>(uint8_t *)offset) = data;
}
inline uint16_t read_word(uint16_t seg, uint16_t offset)
{
return( *(seg:>(uint16_t *)offset) );
}
inline void write_word(uint16_t seg, uint16_t offset, uint16_t data)
{
*(seg:>(uint16_t *)offset) = data;
}
inline uint32_t read_dword(uint16_t seg, uint16_t offset)
{
return( *(seg:>(uint32_t *)offset) );
}
inline void write_dword(uint16_t seg, uint16_t offset, uint32_t data)
{
*(seg:>(uint32_t *)offset) = data;
}
void int_enable(void);
#pragma aux int_enable = "sti" modify exact [] nomemory;
void int_disable(void);
#pragma aux int_disable = "cli" modify exact [] nomemory;
void int_enable_hlt_disable(void);
#pragma aux int_enable_hlt_disable = \
"sti" \
"hlt" \
"cli" \
modify exact [] nomemory;
uint16_t int_query(void);
#pragma aux int_query = \
"pushf" \
"pop ax" \
value [ax] modify exact [ax] nomemory;
void int_restore(uint16_t old_flags);
#pragma aux int_restore = \
"push ax" \
"popf" \
parm [ax] modify exact [] nomemory;
void halt(void);
#pragma aux halt = "hlt" modify exact [] nomemory;
void halt_forever(void);
#pragma aux halt_forever = \
"forever:" \
"hlt" \
"jmp forever" \
modify exact [] nomemory aborts;
/* Output a null-terminated string to a specified port, without the
* terminating null character.
*/
static void out_ctrl_str_asm(uint16_t port, const char *s);
#pragma aux out_ctrl_str_asm = \
"mov al, [bx]" \
"next:" \
"out dx, al" \
"inc bx" \
"mov al, [bx]" \
"or al, al" \
"jnz next" \
parm [dx] [bx] modify exact [ax bx] nomemory;
#ifdef __386__
void rep_movsb(void __far *d, void __far *s, int nbytes);
#pragma aux rep_movsb = \
"push ds" \
"mov ds, dx" \
"rep movsb" \
"pop ds" \
parm [es edi] [dx esi] [ecx];
#else
void rep_movsb(void __far *d, void __far *s, int nbytes);
#pragma aux rep_movsb = \
"push ds" \
"mov ds, dx" \
"rep movsb" \
"pop ds" \
parm [es di] [dx si] [cx];
#endif
void rep_movsw(void __far *d, void __far *s, int nwords);
#pragma aux rep_movsw = \
"push ds" \
"mov ds, dx" \
"rep movsw" \
"pop ds" \
parm [es di] [dx si] [cx];
#ifndef __386__
char __far *rep_insb(char __far *buffer, unsigned nbytes, unsigned port);
#pragma aux rep_insb = ".286" "rep insb" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
char __far *rep_insw(char __far *buffer, unsigned nwords, unsigned port);
#pragma aux rep_insw = ".286" "rep insw" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
# if VBOX_BIOS_CPU >= 80386
char __far *rep_insd(char __far *buffer, unsigned ndwords, unsigned port);
# pragma aux rep_insd = ".386" "rep insd" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
# endif
char __far *rep_outsb(char __far *buffer, unsigned nbytes, unsigned port);
#pragma aux rep_outsb = ".286" "rep outs dx,byte ptr es:[si]" parm [es si] [cx] [dx] value [es si] modify exact [cx si];
char __far *rep_outsw(char __far *buffer, unsigned nwords, unsigned port);
#pragma aux rep_outsw = ".286" "rep outs dx,word ptr es:[si]" parm [es si] [cx] [dx] value [es si] modify exact [cx si];
# if VBOX_BIOS_CPU >= 80386
char __far *rep_outsd(char __far *buffer, unsigned ndwords, unsigned port);
# pragma aux rep_outsd = ".386" "rep outs dx,dword ptr es:[si]" parm [es si] [cx] [dx] value [es si] modify exact [cx si];
# endif
uint16_t swap_16(uint16_t val);
#pragma aux swap_16 = "xchg ah,al" parm [ax] value [ax] modify exact [ax] nomemory;
uint32_t swap_32(uint32_t val);
#pragma aux swap_32 = \
"xchg ah, al" \
"xchg dh, dl" \
"xchg ax, dx" \
parm [dx ax] value [dx ax] modify exact [dx ax] nomemory;
uint64_t swap_64(uint64_t val);
#pragma aux swap_64 = \
"xchg ah, al" \
"xchg bh, bl" \
"xchg ch, cl" \
"xchg dh, dl" \
"xchg ax, dx" \
"xchg bx, cx" \
parm [ax bx cx dx] value [ax bx cx dx] modify exact [ax bx cx dx] nomemory;
#endif
#if VBOX_BIOS_CPU >= 80386
/* Warning: msr_read/msr_write destroy high bits of 32-bit registers (EAX, ECX, EDX). */
uint64_t msr_read(uint32_t msr);
#pragma aux msr_read = \
".586" \
"shl ecx, 16" \
"mov cx, ax" \
"rdmsr" \
"xchg eax, edx" \
"mov bx, ax" \
"shr eax, 16" \
"mov cx, dx" \
"shr edx, 16" \
"xchg dx, cx" \
parm [cx ax] value [ax bx cx dx] modify [] nomemory;
void msr_write(uint64_t val, uint32_t msr);
#pragma aux msr_write = \
".586" \
"shl eax, 16" \
"mov ax, bx" \
"xchg dx, cx" \
"shl edx, 16" \
"mov dx, cx" \
"xchg eax, edx" \
"mov cx, di" \
"shl ecx, 16" \
"mov cx, si" \
"wrmsr" \
parm [ax bx cx dx] [di si] modify [] nomemory;
/* Warning: eflags_read/eflags_write destroy high bits of 32-bit registers (EDX). */
uint32_t eflags_read( void );
#pragma aux eflags_read = \
".386" \
"pushfd" \
"pop edx" \
"mov ax, dx" \
"shr edx, 16" \
value [dx ax] modify [dx ax];
uint32_t eflags_write( uint32_t e_flags );
#pragma aux eflags_write = \
".386" \
"shl edx, 16" \
"mov dx, ax" \
"push edx" \
"popfd" \
parm [dx ax] modify [dx ax];
/* Warning cpuid destroys high bits of 32-bit registers (EAX, EBX, ECX, EDX). */
void cpuid( uint32_t __far cpu_id[4], uint32_t leaf );
#pragma aux cpuid = \
".586" \
"shl edx, 16" \
"mov dx, ax" \
"mov eax, edx" \
"cpuid" \
"mov es:[di+0], eax" \
"mov es:[di+4], ebx" \
"mov es:[di+8], ecx" \
"mov es:[di+12], edx" \
parm [es di] [dx ax] modify [bx cx dx]
#endif
#endif /* !VBOX_INCLUDED_SRC_PC_BIOS_inlines_h */
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