#include "x86emui.h"

Include dependency graph for decode.c:

Macros
#define	GET_SEGMENT(segment)

Functions
static void	x86emu_intr_handle (void)

void	x86emu_intr_raise (u8 intrnum)

void	X86EMU_exec (void)

void	X86EMU_halt_sys (void)

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)

_INLINE u32	get_data_segment (void)

u8	fetch_data_byte (uint offset)

u16	fetch_data_word (uint offset)

u32	fetch_data_long (uint offset)

u8	fetch_data_byte_abs (uint segment, uint offset)

u16	fetch_data_word_abs (uint segment, uint offset)

u32	fetch_data_long_abs (uint segment, uint offset)

void	store_data_byte (uint offset, u8 val)

void	store_data_word (uint offset, u16 val)

void	store_data_long (uint offset, u32 val)

void	store_data_byte_abs (uint segment, uint offset, u8 val)

void	store_data_word_abs (uint segment, uint offset, u16 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)

static unsigned int	decode_sib_si (int scale, int index)

static unsigned int	decode_sib_address (int mod)

unsigned int	decode_rm00_address (int rm)

unsigned int	decode_rm01_address (int rm)

unsigned int	decode_rm10_address (int rm)

unsigned int	decode_rmXX_address (int mod, int rm)

Macro Definition Documentation

◆ GET_SEGMENT

#define GET_SEGMENT ( segment )

Function Documentation

◆ decode_rm00_address()

unsigned int decode_rm00_address ( int rm )

Definition at line 877 of file decode.c.

References DECODE_PRINTF, DECODE_PRINTF2, decode_sib_address(), fetch_long_imm(), fetch_word_imm(), HALT_SYS, M, offset, SYSMODE_PREFIX_ADDR, and SYSMODE_SEG_DS_SS.

Referenced by decode_rmXX_address(), x86emuOp2_opc_01(), x86emuOp_esc_coprocess_d9(), x86emuOp_esc_coprocess_da(), x86emuOp_esc_coprocess_db(), x86emuOp_esc_coprocess_dc(), x86emuOp_esc_coprocess_dd(), x86emuOp_esc_coprocess_de(), and x86emuOp_esc_coprocess_df().

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◆ decode_rm01_address()

unsigned int decode_rm01_address ( int rm )

Definition at line 957 of file decode.c.

References DECODE_PRINTF2, decode_sib_address(), fetch_byte_imm(), HALT_SYS, M, offset, SYSMODE_PREFIX_ADDR, and SYSMODE_SEG_DS_SS.

Referenced by decode_rmXX_address(), x86emuOp2_opc_01(), x86emuOp_esc_coprocess_d9(), x86emuOp_esc_coprocess_da(), x86emuOp_esc_coprocess_db(), x86emuOp_esc_coprocess_dc(), x86emuOp_esc_coprocess_dd(), x86emuOp_esc_coprocess_de(), and x86emuOp_esc_coprocess_df().

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◆ decode_rm10_address()

unsigned int decode_rm10_address ( int rm )

Definition at line 1046 of file decode.c.

References DECODE_PRINTF2, decode_sib_address(), fetch_long_imm(), fetch_word_imm(), HALT_SYS, M, offset, SYSMODE_PREFIX_ADDR, and SYSMODE_SEG_DS_SS.

Referenced by decode_rmXX_address(), x86emuOp2_opc_01(), x86emuOp_esc_coprocess_d9(), x86emuOp_esc_coprocess_da(), x86emuOp_esc_coprocess_db(), x86emuOp_esc_coprocess_dc(), x86emuOp_esc_coprocess_dd(), x86emuOp_esc_coprocess_de(), and x86emuOp_esc_coprocess_df().

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◆ decode_rm_byte_register()

u8* decode_rm_byte_register ( int reg )

Definition at line 562 of file decode.c.

References DECODE_PRINTF, HALT_SYS, M, and NULL.

◆ decode_rm_long_register()

u32* decode_rm_long_register ( int reg )

Definition at line 650 of file decode.c.

References DECODE_PRINTF, HALT_SYS, M, and NULL.

◆ decode_rm_seg_register()

u16* decode_rm_seg_register ( int reg )

Definition at line 695 of file decode.c.

References DECODE_PRINTF, HALT_SYS, M, and NULL.

Referenced by x86emuOp_mov_word_RM_SR(), and x86emuOp_mov_word_SR_RM().

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◆ decode_rm_word_register()

u16* decode_rm_word_register ( int reg )

Definition at line 606 of file decode.c.

References DECODE_PRINTF, HALT_SYS, M, and NULL.

◆ decode_rmXX_address()

unsigned int decode_rmXX_address	(	int	mod,
		int	rm
	)

Definition at line 1138 of file decode.c.

References decode_rm00_address(), decode_rm01_address(), and decode_rm10_address().

Referenced by x86emuOp2_bsf(), x86emuOp2_bsr(), x86emuOp2_bt_R(), x86emuOp2_btc_R(), x86emuOp2_btr_R(), x86emuOp2_bts_R(), x86emuOp2_btX_I(), x86emuOp2_imul_R_RM(), x86emuOp2_lfs_R_IMM(), x86emuOp2_lgs_R_IMM(), x86emuOp2_lss_R_IMM(), x86emuOp2_movsx_byte_R_RM(), x86emuOp2_movsx_word_R_RM(), x86emuOp2_movzx_byte_R_RM(), x86emuOp2_movzx_word_R_RM(), x86emuOp2_set_byte(), x86emuOp2_shld_CL(), x86emuOp2_shld_IMM(), x86emuOp2_shrd_CL(), x86emuOp2_shrd_IMM(), x86emuOp_genop_byte_R_RM(), x86emuOp_genop_byte_RM_R(), x86emuOp_genop_word_R_RM(), x86emuOp_genop_word_RM_R(), x86emuOp_imul_byte_IMM(), x86emuOp_imul_word_IMM(), x86emuOp_lds_R_IMM(), x86emuOp_lea_word_R_M(), x86emuOp_les_R_IMM(), x86emuOp_mov_byte_R_RM(), x86emuOp_mov_byte_RM_IMM(), x86emuOp_mov_byte_RM_R(), x86emuOp_mov_word_R_RM(), x86emuOp_mov_word_RM_IMM(), x86emuOp_mov_word_RM_R(), x86emuOp_mov_word_RM_SR(), x86emuOp_mov_word_SR_RM(), x86emuOp_opc80_byte_RM_IMM(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opc82_byte_RM_IMM(), x86emuOp_opc83_word_RM_IMM(), x86emuOp_opcC0_byte_RM_MEM(), x86emuOp_opcC1_word_RM_MEM(), x86emuOp_opcD0_byte_RM_1(), x86emuOp_opcD1_word_RM_1(), x86emuOp_opcD2_byte_RM_CL(), x86emuOp_opcD3_word_RM_CL(), x86emuOp_opcF6_byte_RM(), x86emuOp_opcF7_word_RM(), x86emuOp_opcFE_byte_RM(), x86emuOp_opcFF_word_RM(), x86emuOp_pop_RM(), x86emuOp_test_byte_RM_R(), x86emuOp_test_word_RM_R(), x86emuOp_xchg_byte_RM_R(), and x86emuOp_xchg_word_RM_R().

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◆ decode_sib_address()

static unsigned int decode_sib_address ( int mod )

static

Definition at line 788 of file decode.c.

References base, DECODE_PRINTF, DECODE_PRINTF2, decode_sib_si(), fetch_byte_imm(), fetch_long_imm(), HALT_SYS, M, and offset.

Referenced by decode_rm00_address(), decode_rm01_address(), and decode_rm10_address().

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◆ decode_sib_si()

static unsigned int decode_sib_si	(	int	scale,
		int	index
	)

static

Definition at line 738 of file decode.c.

References DECODE_PRINTF, DECODE_PRINTF2, HALT_SYS, and M.

Referenced by decode_sib_address().

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◆ fetch_byte_imm()

u8 fetch_byte_imm ( void )

Definition at line 178 of file decode.c.

References CHECK_IP_FETCH, DB, INC_DECODED_INST_LEN, M, and x86emu_check_ip_access().

Referenced by decode_rm01_address(), decode_sib_address(), x86emuOp2_btX_I(), x86emuOp2_shld_IMM(), x86emuOp2_shrd_IMM(), x86emuOp_aad(), x86emuOp_aam(), x86emuOp_enter(), x86emuOp_genop_byte_AL_IMM(), x86emuOp_imul_byte_IMM(), x86emuOp_in_byte_AL_IMM(), x86emuOp_in_word_AX_IMM(), x86emuOp_int_IMM(), x86emuOp_jcxz(), x86emuOp_jump_byte_IMM(), x86emuOp_jump_near_cond(), x86emuOp_loop(), x86emuOp_loope(), x86emuOp_loopne(), x86emuOp_mov_byte_register_IMM(), x86emuOp_mov_byte_RM_IMM(), x86emuOp_opc80_byte_RM_IMM(), x86emuOp_opc82_byte_RM_IMM(), x86emuOp_opc83_word_RM_IMM(), x86emuOp_opcC0_byte_RM_MEM(), x86emuOp_opcC1_word_RM_MEM(), x86emuOp_opcF6_byte_RM(), x86emuOp_out_byte_IMM_AL(), x86emuOp_out_word_IMM_AX(), x86emuOp_push_byte_IMM(), and x86emuOp_test_AL_IMM().

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◆ fetch_data_byte()

u8 fetch_data_byte ( uint offset )

Definition at line 305 of file decode.c.

References CHECK_DATA_ACCESS, get_data_segment(), offset, and x86emu_check_data_access().

Referenced by x86emuOp2_movsx_byte_R_RM(), x86emuOp2_movzx_byte_R_RM(), x86emuOp_cmps_byte(), x86emuOp_genop_byte_R_RM(), x86emuOp_genop_byte_RM_R(), x86emuOp_lods_byte(), x86emuOp_mov_AL_M_IMM(), x86emuOp_mov_byte_R_RM(), x86emuOp_movs_byte(), x86emuOp_opc80_byte_RM_IMM(), x86emuOp_opc82_byte_RM_IMM(), x86emuOp_opcC0_byte_RM_MEM(), x86emuOp_opcD0_byte_RM_1(), x86emuOp_opcD2_byte_RM_CL(), x86emuOp_opcF6_byte_RM(), x86emuOp_opcFE_byte_RM(), x86emuOp_test_byte_RM_R(), x86emuOp_xchg_byte_RM_R(), and x86emuOp_xlat().

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◆ fetch_data_byte_abs()

u8 fetch_data_byte_abs	(	uint	segment,
		uint	offset
	)

Definition at line 363 of file decode.c.

References CHECK_DATA_ACCESS, offset, and x86emu_check_data_access().

Referenced by single_out(), x86emuOp_cmps_byte(), and x86emuOp_scas_byte().

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◆ fetch_data_long()

u32 fetch_data_long ( uint offset )

Definition at line 343 of file decode.c.

References CHECK_DATA_ACCESS, get_data_segment(), offset, and x86emu_check_data_access().

Referenced by x86emuOp2_bsf(), x86emuOp2_bsr(), x86emuOp2_bt_R(), x86emuOp2_btc_R(), x86emuOp2_btr_R(), x86emuOp2_bts_R(), x86emuOp2_btX_I(), x86emuOp2_imul_R_RM(), x86emuOp2_shld_CL(), x86emuOp2_shld_IMM(), x86emuOp2_shrd_CL(), x86emuOp2_shrd_IMM(), x86emuOp_cmps_word(), x86emuOp_genop_word_R_RM(), x86emuOp_genop_word_RM_R(), x86emuOp_imul_byte_IMM(), x86emuOp_imul_word_IMM(), x86emuOp_lods_word(), x86emuOp_mov_AX_M_IMM(), x86emuOp_mov_word_R_RM(), x86emuOp_movs_word(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opc83_word_RM_IMM(), x86emuOp_opcC1_word_RM_MEM(), x86emuOp_opcD1_word_RM_1(), x86emuOp_opcD3_word_RM_CL(), x86emuOp_opcF7_word_RM(), x86emuOp_opcFF_word_RM(), x86emuOp_test_word_RM_R(), and x86emuOp_xchg_word_RM_R().

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◆ fetch_data_long_abs()

u32 fetch_data_long_abs	(	uint	segment,
		uint	offset
	)

Definition at line 405 of file decode.c.

References CHECK_DATA_ACCESS, offset, and x86emu_check_data_access().

Referenced by single_out(), x86emuOp_cmps_word(), and x86emuOp_scas_word().

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◆ fetch_data_word()

u16 fetch_data_word ( uint offset )

Definition at line 324 of file decode.c.

References CHECK_DATA_ACCESS, get_data_segment(), offset, and x86emu_check_data_access().

Referenced by x86emuOp2_bsf(), x86emuOp2_bsr(), x86emuOp2_bt_R(), x86emuOp2_btc_R(), x86emuOp2_btr_R(), x86emuOp2_bts_R(), x86emuOp2_btX_I(), x86emuOp2_imul_R_RM(), x86emuOp2_lfs_R_IMM(), x86emuOp2_lgs_R_IMM(), x86emuOp2_lss_R_IMM(), x86emuOp2_movsx_word_R_RM(), x86emuOp2_movzx_word_R_RM(), x86emuOp2_shld_CL(), x86emuOp2_shld_IMM(), x86emuOp2_shrd_CL(), x86emuOp2_shrd_IMM(), x86emuOp_cmps_word(), x86emuOp_genop_word_R_RM(), x86emuOp_genop_word_RM_R(), x86emuOp_imul_byte_IMM(), x86emuOp_imul_word_IMM(), x86emuOp_lds_R_IMM(), x86emuOp_les_R_IMM(), x86emuOp_lods_word(), x86emuOp_mov_AX_M_IMM(), x86emuOp_mov_word_R_RM(), x86emuOp_mov_word_SR_RM(), x86emuOp_movs_word(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opc83_word_RM_IMM(), x86emuOp_opcC1_word_RM_MEM(), x86emuOp_opcD1_word_RM_1(), x86emuOp_opcD3_word_RM_CL(), x86emuOp_opcF7_word_RM(), x86emuOp_opcFF_word_RM(), x86emuOp_test_word_RM_R(), and x86emuOp_xchg_word_RM_R().

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◆ fetch_data_word_abs()

u16 fetch_data_word_abs	(	uint	segment,
		uint	offset
	)

Definition at line 384 of file decode.c.

References CHECK_DATA_ACCESS, offset, and x86emu_check_data_access().

Referenced by single_out(), x86emuOp_cmps_word(), x86emuOp_enter(), and x86emuOp_scas_word().

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◆ fetch_decode_modrm()

void fetch_decode_modrm	(	int *	mod,
		int *	regh,
		int *	regl
	)

Definition at line 152 of file decode.c.

References CHECK_IP_FETCH, DB, INC_DECODED_INST_LEN, M, and x86emu_check_ip_access().

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◆ fetch_long_imm()

u32 fetch_long_imm ( void )

Definition at line 221 of file decode.c.

References CHECK_IP_FETCH, DB, INC_DECODED_INST_LEN, M, and x86emu_check_ip_access().

Referenced by decode_rm00_address(), decode_rm10_address(), decode_sib_address(), x86emuOp_call_far_IMM(), x86emuOp_call_near_IMM(), x86emuOp_genop_word_AX_IMM(), x86emuOp_imul_word_IMM(), x86emuOp_jump_far_IMM(), x86emuOp_jump_near_IMM(), x86emuOp_mov_word_register_IMM(), x86emuOp_mov_word_RM_IMM(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opcF7_word_RM(), x86emuOp_push_word_IMM(), and x86emuOp_test_AX_IMM().

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◆ fetch_word_imm()

u16 fetch_word_imm ( void )

Definition at line 199 of file decode.c.

References CHECK_IP_FETCH, DB, INC_DECODED_INST_LEN, M, and x86emu_check_ip_access().

Referenced by decode_rm00_address(), decode_rm10_address(), x86emuOp2_long_jump(), x86emuOp_call_far_IMM(), x86emuOp_call_near_IMM(), x86emuOp_enter(), x86emuOp_genop_word_AX_IMM(), x86emuOp_imul_word_IMM(), x86emuOp_jump_far_IMM(), x86emuOp_jump_near_IMM(), x86emuOp_mov_AL_M_IMM(), x86emuOp_mov_AX_M_IMM(), x86emuOp_mov_M_AL_IMM(), x86emuOp_mov_M_AX_IMM(), x86emuOp_mov_word_register_IMM(), x86emuOp_mov_word_RM_IMM(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opcF7_word_RM(), x86emuOp_push_word_IMM(), x86emuOp_ret_far_IMM(), x86emuOp_ret_near_IMM(), and x86emuOp_test_AX_IMM().

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◆ get_data_segment()

_INLINE u32 get_data_segment ( void )

Definition at line 262 of file decode.c.

References HALT_SYS, M, printf, SYSMODE_SEG_DS_SS, SYSMODE_SEGMASK, SYSMODE_SEGOVR_CS, SYSMODE_SEGOVR_DS, SYSMODE_SEGOVR_ES, SYSMODE_SEGOVR_FS, SYSMODE_SEGOVR_GS, and SYSMODE_SEGOVR_SS.

Referenced by fetch_data_byte(), fetch_data_long(), fetch_data_word(), store_data_byte(), store_data_long(), and store_data_word().

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◆ store_data_byte()

void store_data_byte	(	uint	offset,
		u8	val
	)

Definition at line 427 of file decode.c.

References CHECK_DATA_ACCESS, get_data_segment(), offset, val, and x86emu_check_data_access().

Referenced by x86emuOp2_set_byte(), x86emuOp_genop_byte_RM_R(), x86emuOp_mov_byte_RM_IMM(), x86emuOp_mov_byte_RM_R(), x86emuOp_mov_M_AL_IMM(), x86emuOp_opc80_byte_RM_IMM(), x86emuOp_opc82_byte_RM_IMM(), x86emuOp_opcC0_byte_RM_MEM(), x86emuOp_opcD0_byte_RM_1(), x86emuOp_opcD2_byte_RM_CL(), x86emuOp_opcF6_byte_RM(), x86emuOp_opcFE_byte_RM(), and x86emuOp_xchg_byte_RM_R().

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◆ store_data_byte_abs()

void store_data_byte_abs	(	uint	segment,
		uint	offset,
		u8	val
	)

Definition at line 493 of file decode.c.

References CHECK_DATA_ACCESS, offset, val, and x86emu_check_data_access().

Referenced by single_in(), x86emuOp_movs_byte(), and x86emuOp_stos_byte().

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◆ store_data_long()

void store_data_long	(	uint	offset,
		u32	val
	)

Definition at line 471 of file decode.c.

References CHECK_DATA_ACCESS, get_data_segment(), offset, val, and x86emu_check_data_access().

Referenced by x86emuOp2_btc_R(), x86emuOp2_btr_R(), x86emuOp2_bts_R(), x86emuOp2_btX_I(), x86emuOp2_shld_CL(), x86emuOp2_shld_IMM(), x86emuOp2_shrd_CL(), x86emuOp2_shrd_IMM(), x86emuOp_genop_word_RM_R(), x86emuOp_mov_M_AX_IMM(), x86emuOp_mov_word_RM_IMM(), x86emuOp_mov_word_RM_R(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opc83_word_RM_IMM(), x86emuOp_opcC1_word_RM_MEM(), x86emuOp_opcD1_word_RM_1(), x86emuOp_opcD3_word_RM_CL(), x86emuOp_opcF7_word_RM(), x86emuOp_opcFF_word_RM(), x86emuOp_pop_RM(), and x86emuOp_xchg_word_RM_R().

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◆ store_data_long_abs()

void store_data_long_abs	(	uint	segment,
		uint	offset,
		u32	val
	)

Definition at line 539 of file decode.c.

References CHECK_DATA_ACCESS, offset, val, and x86emu_check_data_access().

Referenced by single_in(), x86emuOp_movs_word(), and x86emuOp_stos_word().

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◆ store_data_word()

void store_data_word	(	uint	offset,
		u16	val
	)

Definition at line 449 of file decode.c.

References CHECK_DATA_ACCESS, get_data_segment(), offset, val, and x86emu_check_data_access().

Referenced by x86emuOp2_btc_R(), x86emuOp2_btr_R(), x86emuOp2_bts_R(), x86emuOp2_btX_I(), x86emuOp2_opc_01(), x86emuOp2_shld_CL(), x86emuOp2_shld_IMM(), x86emuOp2_shrd_CL(), x86emuOp2_shrd_IMM(), x86emuOp_genop_word_RM_R(), x86emuOp_mov_M_AX_IMM(), x86emuOp_mov_word_RM_IMM(), x86emuOp_mov_word_RM_R(), x86emuOp_mov_word_RM_SR(), x86emuOp_opc81_word_RM_IMM(), x86emuOp_opc83_word_RM_IMM(), x86emuOp_opcC1_word_RM_MEM(), x86emuOp_opcD1_word_RM_1(), x86emuOp_opcD3_word_RM_CL(), x86emuOp_opcF7_word_RM(), x86emuOp_opcFF_word_RM(), x86emuOp_pop_RM(), and x86emuOp_xchg_word_RM_R().

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◆ store_data_word_abs()

void store_data_word_abs	(	uint	segment,
		uint	offset,
		u16	val
	)

Definition at line 516 of file decode.c.

References CHECK_DATA_ACCESS, offset, val, and x86emu_check_data_access().

Referenced by single_in(), x86emuOp_movs_word(), and x86emuOp_stos_word().

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◆ X86EMU_exec()

void X86EMU_exec ( void )

Definition at line 92 of file decode.c.

References ACCESS_FLAG, CHECK_IP_FETCH, DB, F_IF, INC_DECODED_INST_LEN, INTR_HALTED, INTR_SYNCH, M, SAVE_IP_CS, x86emu_check_ip_access(), x86emu_end_instr(), x86emu_intr_handle(), and x86emu_optab.

Referenced by biosemu(), runInt10(), runInt13(), and void().

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◆ X86EMU_halt_sys()

void X86EMU_halt_sys ( void )

Definition at line 135 of file decode.c.

References INTR_HALTED, and M.

Referenced by void(), and x86emuOp_illegal_op().

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◆ x86emu_intr_handle()

static void x86emu_intr_handle ( void )

static

Definition at line 48 of file decode.c.

References _X86EMU_intrTab, CLEAR_FLAG, F_IF, F_TF, INTR_SYNCH, M, mem_access_word(), and push_word().

Referenced by X86EMU_exec().

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◆ x86emu_intr_raise()

void x86emu_intr_raise ( u8 intrnum )

Definition at line 77 of file decode.c.

References INTR_SYNCH, M, printf, and x86emu_dump_regs().

Referenced by div_byte(), div_long(), div_word(), idiv_byte(), idiv_long(), and idiv_word().

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Macros

Functions

Macro Definition Documentation

◆ GET_SEGMENT

Function Documentation

◆ decode_rm00_address()

◆ decode_rm01_address()

◆ decode_rm10_address()

◆ decode_rm_byte_register()

◆ decode_rm_long_register()

◆ decode_rm_seg_register()

◆ decode_rm_word_register()

◆ decode_rmXX_address()

◆ decode_sib_address()

◆ decode_sib_si()

◆ fetch_byte_imm()

◆ fetch_data_byte()

◆ fetch_data_byte_abs()

◆ fetch_data_long()

◆ fetch_data_long_abs()

◆ fetch_data_word()

◆ fetch_data_word_abs()

◆ fetch_decode_modrm()

◆ fetch_long_imm()

◆ fetch_word_imm()

◆ get_data_segment()

◆ store_data_byte()

◆ store_data_byte_abs()

◆ store_data_long()

◆ store_data_long_abs()

◆ store_data_word()

◆ store_data_word_abs()

◆ X86EMU_exec()

◆ X86EMU_halt_sys()

◆ x86emu_intr_handle()

◆ x86emu_intr_raise()