1 /*- 2 * Copyright (c) 2009 Alex Keda <admin@lissyara.su> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 /* 27 * x86 registers were borrowed from x86emu.h x86emu_regs.h 28 * for compatibility. 29 */ 30 31 #ifndef _X86BIOS_H_ 32 #define _X86BIOS_H_ 33 34 #include <sys/endian.h> 35 #include <sys/systm.h> 36 #include <sys/types.h> 37 38 #ifdef __BIG_ENDIAN__ 39 40 struct x86_register32 { 41 uint32_t e_reg; 42 }; 43 44 struct x86_register16 { 45 uint16_t filler0; 46 uint16_t x_reg; 47 }; 48 49 struct x86_register8 { 50 uint8_t filler0; 51 uint8_t filler1; 52 uint8_t h_reg; 53 uint8_t l_reg; 54 }; 55 56 #else /* !__BIG_ENDIAN__ */ 57 58 struct x86_register32 { 59 uint32_t e_reg; 60 }; 61 62 struct x86_register16 { 63 uint16_t x_reg; 64 }; 65 66 struct x86_register8 { 67 uint8_t l_reg; 68 uint8_t h_reg; 69 }; 70 71 #endif /* __BIG_ENDIAN__ */ 72 73 union x86_register { 74 struct x86_register32 I32_reg; 75 struct x86_register16 I16_reg; 76 struct x86_register8 I8_reg; 77 }; 78 79 struct x86regs { 80 uint16_t _pad0; /* CS */ 81 uint16_t _pad1; /* DS */ 82 uint16_t register_es; 83 uint16_t register_fs; 84 uint16_t register_gs; 85 uint16_t _pad2; /* SS */ 86 uint32_t register_flags; 87 union x86_register register_a; 88 union x86_register register_b; 89 union x86_register register_c; 90 union x86_register register_d; 91 92 union x86_register _pad3; /* SP */ 93 union x86_register register_bp; 94 union x86_register register_si; 95 union x86_register register_di; 96 }; 97 98 typedef struct x86regs x86regs_t; 99 100 /* 8 bit registers */ 101 #define R_AH register_a.I8_reg.h_reg 102 #define R_AL register_a.I8_reg.l_reg 103 #define R_BH register_b.I8_reg.h_reg 104 #define R_BL register_b.I8_reg.l_reg 105 #define R_CH register_c.I8_reg.h_reg 106 #define R_CL register_c.I8_reg.l_reg 107 #define R_DH register_d.I8_reg.h_reg 108 #define R_DL register_d.I8_reg.l_reg 109 110 /* 16 bit registers */ 111 #define R_AX register_a.I16_reg.x_reg 112 #define R_BX register_b.I16_reg.x_reg 113 #define R_CX register_c.I16_reg.x_reg 114 #define R_DX register_d.I16_reg.x_reg 115 116 /* 32 bit extended registers */ 117 #define R_EAX register_a.I32_reg.e_reg 118 #define R_EBX register_b.I32_reg.e_reg 119 #define R_ECX register_c.I32_reg.e_reg 120 #define R_EDX register_d.I32_reg.e_reg 121 122 /* special registers */ 123 #define R_BP register_bp.I16_reg.x_reg 124 #define R_SI register_si.I16_reg.x_reg 125 #define R_DI register_di.I16_reg.x_reg 126 #define R_FLG register_flags 127 128 /* special registers */ 129 #define R_EBP register_bp.I32_reg.e_reg 130 #define R_ESI register_si.I32_reg.e_reg 131 #define R_EDI register_di.I32_reg.e_reg 132 #define R_EFLG register_flags 133 134 /* segment registers */ 135 #define R_ES register_es 136 #define R_FS register_fs 137 #define R_GS register_gs 138 139 #define X86BIOS_PHYSTOSEG(x) (((x) >> 4) & 0xff00) 140 #define X86BIOS_PHYSTOOFF(x) ((x) & 0x0fff) 141 142 __BEGIN_DECLS 143 void *x86bios_alloc(uint32_t *offset, size_t size, int flags); 144 void x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off); 145 void x86bios_free(void *addr, size_t size); 146 uint32_t x86bios_get_intr(int intno); 147 void *x86bios_get_orm(uint32_t offset); 148 void x86bios_init_regs(struct x86regs *regs); 149 void x86bios_intr(struct x86regs *regs, int intno); 150 int x86bios_match_device(uint32_t offset, device_t dev); 151 void *x86bios_offset(uint32_t offset); 152 void x86bios_set_intr(int intno, uint32_t saddr); 153 __END_DECLS 154 155 #endif /* !_X86BIOS_H_ */ 156