| 1 | /** @file
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| 2 | * Inline routines for Watcom C.
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| 3 | */
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| 4 |
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| 5 | /*
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| 6 | * Copyright (C) 2010-2017 Oracle Corporation
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| 7 | *
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| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 9 | * available from http://www.virtualbox.org. This file is free software;
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| 10 | * you can redistribute it and/or modify it under the terms of the GNU
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| 11 | * General Public License (GPL) as published by the Free Software
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| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 15 | */
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| 16 |
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| 17 |
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| 18 | extern unsigned inp(unsigned port);
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| 19 | extern unsigned outp(unsigned port, unsigned value);
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| 20 | extern unsigned inpw(unsigned port);
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| 21 | extern unsigned outpw(unsigned port, unsigned value);
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| 22 | #pragma intrinsic(inp,outp,inpw,outpw)
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| 23 | #define inb(p) inp(p)
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| 24 | #define outb(p, v) outp(p, v)
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| 25 | #define inw(p) inpw(p)
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| 26 | #define outw(p, v) outpw(p, v)
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| 27 |
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| 28 | extern uint8_t read_byte(uint16_t seg, uint16_t offset);
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| 29 | extern uint16_t read_word(uint16_t seg, uint16_t offset);
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| 30 | extern uint32_t read_dword(uint16_t seg, uint16_t offset);
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| 31 | extern void write_byte(uint16_t seg, uint16_t offset, uint8_t data);
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| 32 | extern void write_word(uint16_t seg, uint16_t offset, uint16_t data);
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| 33 | extern void write_dword(uint16_t seg, uint16_t offset, uint32_t data);
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| 34 |
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| 35 | void int_enable(void);
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| 36 | #pragma aux int_enable = "sti" modify exact [] nomemory;
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| 37 |
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| 38 | void int_disable(void);
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| 39 | #pragma aux int_disable = "cli" modify exact [] nomemory;
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| 40 |
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| 41 | void int_enable_hlt_disable(void);
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| 42 | #pragma aux int_enable_hlt_disable = \
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| 43 | "sti" \
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| 44 | "hlt" \
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| 45 | "cli" \
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| 46 | modify exact [] nomemory;
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| 47 |
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| 48 | uint16_t int_query(void);
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| 49 | #pragma aux int_query = \
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| 50 | "pushf" \
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| 51 | "pop ax" \
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| 52 | value [ax] modify exact [ax] nomemory;
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| 53 |
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| 54 | void int_restore(uint16_t old_flags);
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| 55 | #pragma aux int_restore = \
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| 56 | "push ax" \
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| 57 | "popf" \
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| 58 | parm [ax] modify exact [] nomemory;
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| 59 |
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| 60 | void halt(void);
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| 61 | #pragma aux halt = "hlt" modify exact [] nomemory;
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| 62 |
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| 63 | void halt_forever(void);
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| 64 | #pragma aux halt_forever = \
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| 65 | "forever:" \
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| 66 | "hlt" \
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| 67 | "jmp forever" \
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| 68 | modify exact [] nomemory aborts;
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| 69 |
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| 70 | #ifdef __386__
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| 71 |
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| 72 | void rep_movsb(void __far *d, void __far *s, int nbytes);
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| 73 | #pragma aux rep_movsb = \
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| 74 | "push ds" \
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| 75 | "mov ds, dx" \
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| 76 | "rep movsb" \
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| 77 | "pop ds" \
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| 78 | parm [es edi] [dx esi] [ecx];
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| 79 |
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| 80 | #else
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| 81 |
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| 82 | void rep_movsb(void __far *d, void __far *s, int nbytes);
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| 83 | #pragma aux rep_movsb = \
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| 84 | "push ds" \
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| 85 | "mov ds, dx" \
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| 86 | "rep movsb" \
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| 87 | "pop ds" \
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| 88 | parm [es di] [dx si] [cx];
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| 89 |
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| 90 | #endif
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| 91 |
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| 92 | void rep_movsw(void __far *d, void __far *s, int nwords);
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| 93 | #pragma aux rep_movsw = \
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| 94 | "push ds" \
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| 95 | "mov ds, dx" \
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| 96 | "rep movsw" \
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| 97 | "pop ds" \
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| 98 | parm [es di] [dx si] [cx];
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| 99 |
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| 100 | #ifndef __386__
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| 101 |
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| 102 | char __far *rep_insb(char __far *buffer, unsigned nbytes, unsigned port);
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| 103 | #pragma aux rep_insb = ".286" "rep insb" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
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| 104 |
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| 105 | char __far *rep_insw(char __far *buffer, unsigned nwords, unsigned port);
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| 106 | #pragma aux rep_insw = ".286" "rep insw" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
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| 107 |
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| 108 | # if VBOX_BIOS_CPU >= 80386
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| 109 | char __far *rep_insd(char __far *buffer, unsigned ndwords, unsigned port);
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| 110 | # pragma aux rep_insd = ".386" "rep insd" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
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| 111 | # endif
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| 112 |
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| 113 | char __far *rep_outsb(char __far *buffer, unsigned nbytes, unsigned port);
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| 114 | #pragma aux rep_outsb = ".286" "rep outs dx,byte ptr es:[si]" parm [es si] [cx] [dx] value [es si] modify exact [cx si];
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| 115 |
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| 116 | char __far *rep_outsw(char __far *buffer, unsigned nwords, unsigned port);
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| 117 | #pragma aux rep_outsw = ".286" "rep outs dx,word ptr es:[si]" parm [es si] [cx] [dx] value [es si] modify exact [cx si];
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| 118 |
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| 119 | # if VBOX_BIOS_CPU >= 80386
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| 120 | char __far *rep_outsd(char __far *buffer, unsigned ndwords, unsigned port);
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| 121 | # pragma aux rep_outsd = ".386" "rep outs dx,dword ptr es:[si]" parm [es si] [cx] [dx] value [es si] modify exact [cx si];
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| 122 | # endif
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| 123 |
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| 124 | uint16_t swap_16(uint16_t val);
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| 125 | #pragma aux swap_16 = "xchg ah,al" parm [ax] value [ax] modify exact [ax] nomemory;
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| 126 |
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| 127 | uint32_t swap_32(uint32_t val);
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| 128 | #pragma aux swap_32 = \
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| 129 | "xchg ah, al" \
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| 130 | "xchg dh, dl" \
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| 131 | "xchg ax, dx" \
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| 132 | parm [dx ax] value [dx ax] modify exact [dx ax] nomemory;
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| 133 |
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| 134 | uint64_t swap_64(uint64_t val);
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| 135 | #pragma aux swap_64 = \
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| 136 | "xchg ah, al" \
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| 137 | "xchg bh, bl" \
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| 138 | "xchg ch, cl" \
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| 139 | "xchg dh, dl" \
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| 140 | "xchg ax, dx" \
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| 141 | "xchg bx, cx" \
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| 142 | parm [ax bx cx dx] value [ax bx cx dx] modify exact [ax bx cx dx] nomemory;
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| 143 |
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| 144 | #endif
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| 145 |
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| 146 | #if VBOX_BIOS_CPU >= 80386
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| 147 |
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| 148 | /* Warning: msr_read/msr_write destroy high bits of 32-bit registers (EAX, ECX, EDX). */
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| 149 |
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| 150 | uint64_t msr_read(uint32_t msr);
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| 151 | #pragma aux msr_read = \
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| 152 | ".586" \
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| 153 | "shl ecx, 16" \
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| 154 | "mov cx, ax" \
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| 155 | "rdmsr" \
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| 156 | "xchg eax, edx" \
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| 157 | "mov bx, ax" \
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| 158 | "shr eax, 16" \
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| 159 | "mov cx, dx" \
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| 160 | "shr edx, 16" \
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| 161 | "xchg dx, cx" \
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| 162 | parm [cx ax] value [ax bx cx dx] modify [] nomemory;
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| 163 |
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| 164 | void msr_write(uint64_t val, uint32_t msr);
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| 165 | #pragma aux msr_write = \
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| 166 | ".586" \
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| 167 | "shl eax, 16" \
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| 168 | "mov ax, bx" \
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| 169 | "xchg dx, cx" \
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| 170 | "shl edx, 16" \
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| 171 | "mov dx, cx" \
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| 172 | "xchg eax, edx" \
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| 173 | "mov cx, di" \
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| 174 | "shl ecx, 16" \
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| 175 | "mov cx, si" \
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| 176 | "wrmsr" \
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| 177 | parm [ax bx cx dx] [di si] modify [] nomemory;
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| 178 |
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| 179 | /* Warning: eflags_read/eflags_write destroy high bits of 32-bit registers (EDX). */
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| 180 | uint32_t eflags_read( void );
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| 181 | #pragma aux eflags_read = \
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| 182 | ".386" \
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| 183 | "pushfd" \
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| 184 | "pop edx" \
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| 185 | "mov ax, dx" \
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| 186 | "shr edx, 16" \
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| 187 | value [dx ax] modify [dx ax];
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| 188 |
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| 189 | uint32_t eflags_write( uint32_t e_flags );
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| 190 | #pragma aux eflags_write = \
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| 191 | ".386" \
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| 192 | "shl edx, 16" \
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| 193 | "mov dx, ax" \
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| 194 | "push edx" \
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| 195 | "popfd" \
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| 196 | parm [dx ax] modify [dx ax];
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| 197 |
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| 198 | /* Warning cpuid destroys high bits of 32-bit registers (EAX, EBX, ECX, EDX). */
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| 199 | void cpuid( uint32_t __far cpu_id[4], uint32_t leaf );
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| 200 | #pragma aux cpuid = \
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| 201 | ".586" \
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| 202 | "shl edx, 16" \
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| 203 | "mov dx, ax" \
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| 204 | "mov eax, edx" \
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| 205 | "cpuid" \
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| 206 | "mov es:[di+0], eax" \
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| 207 | "mov es:[di+4], ebx" \
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| 208 | "mov es:[di+8], ecx" \
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| 209 | "mov es:[di+12], edx" \
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| 210 | parm [es di] [dx ax] modify [bx cx dx]
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| 211 |
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| 212 | #endif
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