x86emu_util.c revision 1.2.4.2
1 1.2.4.2 matt /* $NetBSD: x86emu_util.c,v 1.2.4.2 2008/01/09 01:21:38 matt Exp $ */ 2 1.2.4.2 matt 3 1.2.4.2 matt /**************************************************************************** 4 1.2.4.2 matt * 5 1.2.4.2 matt * Realmode X86 Emulator Library 6 1.2.4.2 matt * 7 1.2.4.2 matt * Copyright (C) 1996-1999 SciTech Software, Inc. 8 1.2.4.2 matt * Copyright (C) David Mosberger-Tang 9 1.2.4.2 matt * Copyright (C) 1999 Egbert Eich 10 1.2.4.2 matt * Copyright (C) 2007 Joerg Sonnenberger 11 1.2.4.2 matt * 12 1.2.4.2 matt * ======================================================================== 13 1.2.4.2 matt * 14 1.2.4.2 matt * Permission to use, copy, modify, distribute, and sell this software and 15 1.2.4.2 matt * its documentation for any purpose is hereby granted without fee, 16 1.2.4.2 matt * provided that the above copyright notice appear in all copies and that 17 1.2.4.2 matt * both that copyright notice and this permission notice appear in 18 1.2.4.2 matt * supporting documentation, and that the name of the authors not be used 19 1.2.4.2 matt * in advertising or publicity pertaining to distribution of the software 20 1.2.4.2 matt * without specific, written prior permission. The authors makes no 21 1.2.4.2 matt * representations about the suitability of this software for any purpose. 22 1.2.4.2 matt * It is provided "as is" without express or implied warranty. 23 1.2.4.2 matt * 24 1.2.4.2 matt * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 25 1.2.4.2 matt * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 26 1.2.4.2 matt * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 27 1.2.4.2 matt * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 28 1.2.4.2 matt * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 29 1.2.4.2 matt * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 30 1.2.4.2 matt * PERFORMANCE OF THIS SOFTWARE. 31 1.2.4.2 matt * 32 1.2.4.2 matt ****************************************************************************/ 33 1.2.4.2 matt 34 1.2.4.2 matt #include <x86emu/x86emu.h> 35 1.2.4.2 matt #include <x86emu/x86emu_regs.h> 36 1.2.4.2 matt 37 1.2.4.2 matt #include <sys/endian.h> 38 1.2.4.2 matt #include <sys/null.h> 39 1.2.4.2 matt 40 1.2.4.2 matt /**************************************************************************** 41 1.2.4.2 matt PARAMETERS: 42 1.2.4.2 matt addr - Emulator memory address to read 43 1.2.4.2 matt 44 1.2.4.2 matt RETURNS: 45 1.2.4.2 matt Byte value read from emulator memory. 46 1.2.4.2 matt 47 1.2.4.2 matt REMARKS: 48 1.2.4.2 matt Reads a byte value from the emulator memory. 49 1.2.4.2 matt ****************************************************************************/ 50 1.2.4.2 matt static uint8_t 51 1.2.4.2 matt rdb(struct X86EMU *emu, uint32_t addr) 52 1.2.4.2 matt { 53 1.2.4.2 matt if (addr > emu->mem_size - 1) 54 1.2.4.2 matt X86EMU_halt_sys(emu); 55 1.2.4.2 matt return emu->mem_base[addr]; 56 1.2.4.2 matt } 57 1.2.4.2 matt /**************************************************************************** 58 1.2.4.2 matt PARAMETERS: 59 1.2.4.2 matt addr - Emulator memory address to read 60 1.2.4.2 matt 61 1.2.4.2 matt RETURNS: 62 1.2.4.2 matt Word value read from emulator memory. 63 1.2.4.2 matt 64 1.2.4.2 matt REMARKS: 65 1.2.4.2 matt Reads a word value from the emulator memory. 66 1.2.4.2 matt ****************************************************************************/ 67 1.2.4.2 matt static uint16_t 68 1.2.4.2 matt rdw(struct X86EMU *emu, uint32_t addr) 69 1.2.4.2 matt { 70 1.2.4.2 matt if (addr > emu->mem_size - 2) 71 1.2.4.2 matt X86EMU_halt_sys(emu); 72 1.2.4.2 matt return le16dec(emu->mem_base + addr); 73 1.2.4.2 matt } 74 1.2.4.2 matt /**************************************************************************** 75 1.2.4.2 matt PARAMETERS: 76 1.2.4.2 matt addr - Emulator memory address to read 77 1.2.4.2 matt 78 1.2.4.2 matt RETURNS: 79 1.2.4.2 matt Long value read from emulator memory. 80 1.2.4.2 matt REMARKS: 81 1.2.4.2 matt Reads a long value from the emulator memory. 82 1.2.4.2 matt ****************************************************************************/ 83 1.2.4.2 matt static uint32_t 84 1.2.4.2 matt rdl(struct X86EMU *emu, uint32_t addr) 85 1.2.4.2 matt { 86 1.2.4.2 matt if (addr > emu->mem_size - 4) 87 1.2.4.2 matt X86EMU_halt_sys(emu); 88 1.2.4.2 matt return le32dec(emu->mem_base + addr); 89 1.2.4.2 matt } 90 1.2.4.2 matt /**************************************************************************** 91 1.2.4.2 matt PARAMETERS: 92 1.2.4.2 matt addr - Emulator memory address to read 93 1.2.4.2 matt val - Value to store 94 1.2.4.2 matt 95 1.2.4.2 matt REMARKS: 96 1.2.4.2 matt Writes a byte value to emulator memory. 97 1.2.4.2 matt ****************************************************************************/ 98 1.2.4.2 matt static void 99 1.2.4.2 matt wrb(struct X86EMU *emu, uint32_t addr, uint8_t val) 100 1.2.4.2 matt { 101 1.2.4.2 matt if (addr > emu->mem_size - 1) 102 1.2.4.2 matt X86EMU_halt_sys(emu); 103 1.2.4.2 matt emu->mem_base[addr] = val; 104 1.2.4.2 matt } 105 1.2.4.2 matt /**************************************************************************** 106 1.2.4.2 matt PARAMETERS: 107 1.2.4.2 matt addr - Emulator memory address to read 108 1.2.4.2 matt val - Value to store 109 1.2.4.2 matt 110 1.2.4.2 matt REMARKS: 111 1.2.4.2 matt Writes a word value to emulator memory. 112 1.2.4.2 matt ****************************************************************************/ 113 1.2.4.2 matt static void 114 1.2.4.2 matt wrw(struct X86EMU *emu, uint32_t addr, uint16_t val) 115 1.2.4.2 matt { 116 1.2.4.2 matt if (addr > emu->mem_size - 2) 117 1.2.4.2 matt X86EMU_halt_sys(emu); 118 1.2.4.2 matt le16enc(emu->mem_base + addr, val); 119 1.2.4.2 matt } 120 1.2.4.2 matt /**************************************************************************** 121 1.2.4.2 matt PARAMETERS: 122 1.2.4.2 matt addr - Emulator memory address to read 123 1.2.4.2 matt val - Value to store 124 1.2.4.2 matt 125 1.2.4.2 matt REMARKS: 126 1.2.4.2 matt Writes a long value to emulator memory. 127 1.2.4.2 matt ****************************************************************************/ 128 1.2.4.2 matt static void 129 1.2.4.2 matt wrl(struct X86EMU *emu, uint32_t addr, uint32_t val) 130 1.2.4.2 matt { 131 1.2.4.2 matt if (addr > emu->mem_size - 4) 132 1.2.4.2 matt X86EMU_halt_sys(emu); 133 1.2.4.2 matt le32enc(emu->mem_base + addr, val); 134 1.2.4.2 matt } 135 1.2.4.2 matt 136 1.2.4.2 matt /*----------------------------- Setup -------------------------------------*/ 137 1.2.4.2 matt 138 1.2.4.2 matt void 139 1.2.4.2 matt X86EMU_init_default(struct X86EMU *emu) 140 1.2.4.2 matt { 141 1.2.4.2 matt int i; 142 1.2.4.2 matt 143 1.2.4.2 matt emu->emu_rdb = rdb; 144 1.2.4.2 matt emu->emu_rdw = rdw; 145 1.2.4.2 matt emu->emu_rdl = rdl; 146 1.2.4.2 matt emu->emu_wrb = wrb; 147 1.2.4.2 matt emu->emu_wrw = wrw; 148 1.2.4.2 matt emu->emu_wrl = wrl; 149 1.2.4.2 matt 150 1.2.4.2 matt for (i = 0; i < 256; i++) 151 1.2.4.2 matt emu->_X86EMU_intrTab[i] = NULL; 152 1.2.4.2 matt } 153
Indexes created Fri Sep 26 08:10:20 GMT 2025