decode.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef __X86EMU_DECODE_H
#define __X86EMU_DECODE_H

/*---------------------- Macros and type definitions ----------------------*/

/* Instruction Decoding Stuff */

#define FETCH_DECODE_MODRM(mod, rh, rl) fetch_decode_modrm(&mod, &rh, &rl)
#define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r)
#define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r)
#define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r)
#define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK

/*-------------------------- Function Prototypes --------------------------*/

#ifdef __cplusplus
extern "C" { /* Use "C" linkage when in C++ mode */
#endif

void x86emu_intr_raise(u8 type);
void fetch_decode_modrm(int *mod, int *regh, int *regl);
u8 fetch_byte_imm(void);
u16 fetch_word_imm(void);
u32 fetch_long_imm(void);
u8 fetch_data_byte(uint offset);
u8 fetch_data_byte_abs(uint segment, uint offset);
u16 fetch_data_word(uint offset);
u16 fetch_data_word_abs(uint segment, uint offset);
u32 fetch_data_long(uint offset);
u32 fetch_data_long_abs(uint segment, uint offset);
void store_data_byte(uint offset, u8 val);
void store_data_byte_abs(uint segment, uint offset, u8 val);
void store_data_word(uint offset, u16 val);
void store_data_word_abs(uint segment, uint offset, u16 val);
void store_data_long(uint offset, u32 val);
void store_data_long_abs(uint segment, uint offset, u32 val);
u8 *decode_rm_byte_register(int reg);
u16 *decode_rm_word_register(int reg);
u32 *decode_rm_long_register(int reg);
u16 *decode_rm_seg_register(int reg);
u32 decode_rm00_address(int rm);
u32 decode_rm01_address(int rm);
u32 decode_rm10_address(int rm);
u32 decode_sib_address(int sib, int mod);

#ifdef __cplusplus
} /* End of "C" linkage for C++     */
#endif

#endif /* __X86EMU_DECODE_H */