| 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) 2010-2022 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 | #ifndef VBOX_INCLUDED_SRC_Graphics_BIOS_inlines_h
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| 18 | #define VBOX_INCLUDED_SRC_Graphics_BIOS_inlines_h
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| 19 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 20 | # pragma once
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| 21 | #endif
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| 22 |
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| 23 | extern unsigned inp(unsigned port);
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| 24 | extern unsigned outp(unsigned port, unsigned value);
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| 25 | extern unsigned inpw(unsigned port);
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| 26 | extern unsigned outpw(unsigned port, unsigned value);
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| 27 | #pragma intrinsic(inp,outp,inpw,outpw)
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| 28 | #define inb(p) inp(p)
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| 29 | #define outb(p, v) outp(p, v)
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| 30 | #define inw(p) inpw(p)
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| 31 | #define outw(p, v) outpw(p, v)
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| 32 |
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| 33 | /* Far byte/word/dword access routines. */
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| 34 |
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| 35 | inline uint8_t read_byte(uint16_t seg, uint16_t offset)
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| 36 | {
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| 37 | return( *(seg:>(uint8_t *)offset) );
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| 38 | }
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| 39 |
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| 40 | inline void write_byte(uint16_t seg, uint16_t offset, uint8_t data)
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| 41 | {
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| 42 | *(seg:>(uint8_t *)offset) = data;
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| 43 | }
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| 44 |
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| 45 | inline uint16_t read_word(uint16_t seg, uint16_t offset)
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| 46 | {
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| 47 | return( *(seg:>(uint16_t *)offset) );
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| 48 | }
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| 49 |
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| 50 | inline void write_word(uint16_t seg, uint16_t offset, uint16_t data)
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| 51 | {
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| 52 | *(seg:>(uint16_t *)offset) = data;
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| 53 | }
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| 54 |
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| 55 | inline uint32_t read_dword(uint16_t seg, uint16_t offset)
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| 56 | {
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| 57 | return( *(seg:>(uint32_t *)offset) );
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| 58 | }
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| 59 |
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| 60 | inline void write_dword(uint16_t seg, uint16_t offset, uint32_t data)
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| 61 | {
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| 62 | *(seg:>(uint32_t *)offset) = data;
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| 63 | }
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| 64 |
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| 65 | void int_enable(void);
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| 66 | #pragma aux int_enable = "sti" modify exact [] nomemory;
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| 67 |
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| 68 | void int_disable(void);
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| 69 | #pragma aux int_disable = "cli" modify exact [] nomemory;
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| 70 |
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| 71 | uint16_t int_query(void);
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| 72 | #pragma aux int_query = \
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| 73 | "pushf" \
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| 74 | "pop ax" \
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| 75 | value [ax] modify exact [ax] nomemory;
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| 76 |
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| 77 | void int_restore(uint16_t old_flags);
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| 78 | #pragma aux int_restore = \
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| 79 | "push ax" \
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| 80 | "popf" \
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| 81 | parm [ax] modify exact [] nomemory;
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| 82 |
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| 83 | void halt(void);
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| 84 | #pragma aux halt = "hlt" modify exact [] nomemory;
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| 85 |
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| 86 | void halt_forever(void);
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| 87 | #pragma aux halt_forever = \
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| 88 | "forever:" \
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| 89 | "hlt" \
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| 90 | "jmp forever" \
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| 91 | modify exact [] nomemory aborts;
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| 92 |
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| 93 | void rep_movsw(void __far *d, void __far *s, int nwords);
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| 94 | #pragma aux rep_movsw = \
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| 95 | "push ds" \
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| 96 | "mov ds, dx" \
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| 97 | "rep movsw" \
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| 98 | "pop ds" \
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| 99 | parm [es di] [dx si] [cx];
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| 100 |
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| 101 | int repe_cmpsb(void __far *d, void __far *s, int nbytes);
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| 102 | #pragma aux repe_cmpsb = \
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| 103 | "push ds" \
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| 104 | "mov ds, dx" \
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| 105 | "repe cmpsb" \
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| 106 | "pop ds" \
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| 107 | "mov ax, 0" \
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| 108 | "jz match" \
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| 109 | "inc al" \
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| 110 | "match:" \
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| 111 | parm [es di] [dx si] [cx] value [ax] modify nomemory;
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| 112 |
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| 113 | char __far *rep_insb(char __far *buffer, unsigned nbytes, unsigned port);
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| 114 | #pragma aux rep_insb = ".286" "rep insb" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
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| 115 |
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| 116 | char __far *rep_insw(char __far *buffer, unsigned nwords, unsigned port);
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| 117 | #pragma aux rep_insw = ".286" "rep insw" parm [es di] [cx] [dx] value [es di] modify exact [cx di];
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| 118 |
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| 119 | char __far *rep_outsb(char __far *buffer, unsigned nbytes, unsigned port);
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| 120 | #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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| 121 |
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| 122 | char __far *rep_outsw(char __far *buffer, unsigned nwords, unsigned port);
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| 123 | #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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| 124 |
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| 125 | uint16_t __far swap_16(uint16_t val);
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| 126 | #pragma aux swap_16 = "xchg ah,al" parm [ax] value [ax] modify exact [ax] nomemory;
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| 127 |
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| 128 | uint32_t __far swap_32(uint32_t val);
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| 129 | #pragma aux swap_32 = \
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| 130 | "xchg ah, al" \
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| 131 | "xchg dh, dl" \
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| 132 | "xchg ax, dx" \
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| 133 | parm [dx ax] value [dx ax] modify exact [dx ax] nomemory;
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| 134 |
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| 135 | extern void memsetb(uint16_t seg, uint16_t offset, uint16_t value, uint16_t count);
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| 136 | #pragma aux memsetb = \
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| 137 | "jcxz no_copy" \
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| 138 | "rep stosb" \
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| 139 | "no_copy:" \
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| 140 | parm [es] [di] [ax] [cx];
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| 141 |
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| 142 | extern void memsetw(uint16_t seg, uint16_t offset, uint16_t value, uint16_t count);
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| 143 | #pragma aux memsetw = \
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| 144 | "jcxz no_copy" \
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| 145 | "rep stosw" \
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| 146 | "no_copy:" \
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| 147 | parm [es] [di] [ax] [cx];
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| 148 |
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| 149 | extern void memcpyb(uint16_t dseg, uint16_t doffset, uint16_t sseg, uint16_t soffset, uint16_t count);
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| 150 | #pragma aux memcpyb = \
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| 151 | "jcxz no_copy" \
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| 152 | "push ds" \
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| 153 | "mov ds, dx" \
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| 154 | "rep movsb" \
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| 155 | "pop ds" \
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| 156 | "no_copy:" \
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| 157 | parm [es] [di] [dx] [si] [cx];
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| 158 |
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| 159 | extern void memcpyw(uint16_t dseg, uint16_t doffset, uint16_t sseg, uint16_t soffset, uint16_t count);
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| 160 | #pragma aux memcpyw = \
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| 161 | "jcxz no_copy" \
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| 162 | "push ds" \
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| 163 | "mov ds, dx" \
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| 164 | "rep movsw" \
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| 165 | "pop ds" \
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| 166 | "no_copy:" \
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| 167 | parm [es] [di] [dx] [si] [cx];
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| 168 |
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| 169 | #endif /* !VBOX_INCLUDED_SRC_Graphics_BIOS_inlines_h */
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| 170 |
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