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/*-
* Copyright (c) 2009 Alex Keda <admin@lissyara.su>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* x86 registers were borrowed from x86emu.h x86emu_regs.h
* for compatability.
*/
#ifndef _X86BIOS_H_
#define _X86BIOS_H_
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/types.h>
#ifdef __BIG_ENDIAN__
struct x86_register32 {
uint32_t e_reg;
};
struct x86_register16 {
uint16_t filler0;
uint16_t x_reg;
};
struct x86_register8 {
uint8_t filler0;
uint8_t filler1;
uint8_t h_reg;
uint8_t l_reg;
};
#else /* !__BIG_ENDIAN__ */
struct x86_register32 {
uint32_t e_reg;
};
struct x86_register16 {
uint16_t x_reg;
};
struct x86_register8 {
uint8_t l_reg;
uint8_t h_reg;
};
#endif /* __BIG_ENDIAN__ */
union x86_register {
struct x86_register32 I32_reg;
struct x86_register16 I16_reg;
struct x86_register8 I8_reg;
};
struct x86regs {
uint16_t _pad0; /* CS */
uint16_t _pad1; /* DS */
uint16_t register_es;
uint16_t register_fs;
uint16_t register_gs;
uint16_t _pad2; /* SS */
uint32_t register_flags;
union x86_register register_a;
union x86_register register_b;
union x86_register register_c;
union x86_register register_d;
union x86_register _pad3; /* SP */
union x86_register register_bp;
union x86_register register_si;
union x86_register register_di;
};
typedef struct x86regs x86regs_t;
/* 8 bit registers */
#define R_AH register_a.I8_reg.h_reg
#define R_AL register_a.I8_reg.l_reg
#define R_BH register_b.I8_reg.h_reg
#define R_BL register_b.I8_reg.l_reg
#define R_CH register_c.I8_reg.h_reg
#define R_CL register_c.I8_reg.l_reg
#define R_DH register_d.I8_reg.h_reg
#define R_DL register_d.I8_reg.l_reg
/* 16 bit registers */
#define R_AX register_a.I16_reg.x_reg
#define R_BX register_b.I16_reg.x_reg
#define R_CX register_c.I16_reg.x_reg
#define R_DX register_d.I16_reg.x_reg
/* 32 bit extended registers */
#define R_EAX register_a.I32_reg.e_reg
#define R_EBX register_b.I32_reg.e_reg
#define R_ECX register_c.I32_reg.e_reg
#define R_EDX register_d.I32_reg.e_reg
/* special registers */
#define R_BP register_bp.I16_reg.x_reg
#define R_SI register_si.I16_reg.x_reg
#define R_DI register_di.I16_reg.x_reg
#define R_FLG register_flags
/* special registers */
#define R_EBP register_bp.I32_reg.e_reg
#define R_ESI register_si.I32_reg.e_reg
#define R_EDI register_di.I32_reg.e_reg
#define R_EFLG register_flags
/* segment registers */
#define R_ES register_es
#define R_FS register_fs
#define R_GS register_gs
#define X86BIOS_PHYSTOSEG(x) (((x) >> 4) & 0xffff)
#define X86BIOS_PHYSTOOFF(x) ((x) & 0x000f)
__BEGIN_DECLS
void *x86bios_alloc(uint32_t *offset, size_t size, int flags);
void x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off);
void x86bios_free(void *addr, size_t size);
uint32_t x86bios_get_intr(int intno);
void *x86bios_get_orm(uint32_t offset);
void x86bios_init_regs(struct x86regs *regs);
void x86bios_intr(struct x86regs *regs, int intno);
int x86bios_match_device(uint32_t offset, device_t dev);
void *x86bios_offset(uint32_t offset);
__END_DECLS
#endif /* !_X86BIOS_H_ */
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