diff options
Diffstat (limited to 'src/VBox/Devices/PC/BIOS/inlines.h')
| -rw-r--r-- | src/VBox/Devices/PC/BIOS/inlines.h | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/src/VBox/Devices/PC/BIOS/inlines.h b/src/VBox/Devices/PC/BIOS/inlines.h new file mode 100644 index 00000000..13c81adf --- /dev/null +++ b/src/VBox/Devices/PC/BIOS/inlines.h @@ -0,0 +1,271 @@ +/* $Id: inlines.h $ */ +/** @file + * Inline routines for Watcom C. + */ + +/* + * Copyright (C) 2010-2022 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 */ + |