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/* $NetBSD: x86emu_regs.h,v 1.1 2007/12/01 20:14:10 joerg Exp $ */ /* $OpenBSD: x86emu_regs.h,v 1.2 2009/06/06 03:45:05 matthieu Exp $ */ /**************************************************************************** * * Realmode X86 Emulator Library * * Copyright (C) 1996-1999 SciTech Software, Inc. * Copyright (C) David Mosberger-Tang * Copyright (C) 1999 Egbert Eich * Copyright (C) 2007 Joerg Sonnenberger * * ======================================================================== * * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and that * both that copyright notice and this permission notice appear in * supporting documentation, and that the name of the authors not be used * in advertising or publicity pertaining to distribution of the software * without specific, written prior permission. The authors makes no * representations about the suitability of this software for any purpose. * It is provided "as is" without express or implied warranty. * * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, 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_REGS_H #define __X86EMU_REGS_H /*---------------------- Macros and type definitions ----------------------*/ /* 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_SP register_sp.I16_reg.x_reg #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_IP register_ip.I16_reg.x_reg #define R_FLG register_flags /* special registers */ #define R_ESP register_sp.I32_reg.e_reg #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_EIP register_ip.I32_reg.e_reg #define R_EFLG register_flags /* segment registers */ #define R_CS register_cs #define R_DS register_ds #define R_SS register_ss #define R_ES register_es #define R_FS register_fs #define R_GS register_gs /* flag conditions */ #define FB_CF 0x0001 /* CARRY flag */ #define FB_PF 0x0004 /* PARITY flag */ #define FB_AF 0x0010 /* AUX flag */ #define FB_ZF 0x0040 /* ZERO flag */ #define FB_SF 0x0080 /* SIGN flag */ #define FB_TF 0x0100 /* TRAP flag */ #define FB_IF 0x0200 /* INTERRUPT ENABLE flag */ #define FB_DF 0x0400 /* DIR flag */ #define FB_OF 0x0800 /* OVERFLOW flag */ /* 80286 and above always have bit#1 set */ #define F_ALWAYS_ON (0x0002) /* flag bits always on */ /* * Define a mask for only those flag bits we will ever pass back * (via PUSHF) */ #define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF) /* following bits masked in to a 16bit quantity */ #define F_CF 0x0001 /* CARRY flag */ #define F_PF 0x0004 /* PARITY flag */ #define F_AF 0x0010 /* AUX flag */ #define F_ZF 0x0040 /* ZERO flag */ #define F_SF 0x0080 /* SIGN flag */ #define F_TF 0x0100 /* TRAP flag */ #define F_IF 0x0200 /* INTERRUPT ENABLE flag */ #define F_DF 0x0400 /* DIR flag */ #define F_OF 0x0800 /* OVERFLOW flag */ #define SET_FLAG(flag) (emu->x86.R_FLG |= (flag)) #define CLEAR_FLAG(flag) (emu->x86.R_FLG &= ~(flag)) #define ACCESS_FLAG(flag) (emu->x86.R_FLG & (flag)) #define CLEARALL_FLAG(m) (emu->x86.R_FLG = 0) #define CONDITIONAL_SET_FLAG(COND,FLAG) \ if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG) #define F_PF_CALC 0x010000 /* PARITY flag has been calced */ #define F_ZF_CALC 0x020000 /* ZERO flag has been calced */ #define F_SF_CALC 0x040000 /* SIGN flag has been calced */ #define F_ALL_CALC 0xff0000 /* All have been calced */ /* * Emulator machine state. * Segment usage control. */ #define SYSMODE_SEG_DS_SS 0x00000001 #define SYSMODE_SEGOVR_CS 0x00000002 #define SYSMODE_SEGOVR_DS 0x00000004 #define SYSMODE_SEGOVR_ES 0x00000008 #define SYSMODE_SEGOVR_FS 0x00000010 #define SYSMODE_SEGOVR_GS 0x00000020 #define SYSMODE_SEGOVR_SS 0x00000040 #define SYSMODE_PREFIX_REPE 0x00000080 #define SYSMODE_PREFIX_REPNE 0x00000100 #define SYSMODE_PREFIX_DATA 0x00000200 #define SYSMODE_PREFIX_ADDR 0x00000400 #define SYSMODE_INTR_PENDING 0x10000000 #define SYSMODE_EXTRN_INTR 0x20000000 #define SYSMODE_HALTED 0x40000000 #define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \ SYSMODE_SEGOVR_CS | \ SYSMODE_SEGOVR_DS | \ SYSMODE_SEGOVR_ES | \ SYSMODE_SEGOVR_FS | \ SYSMODE_SEGOVR_GS | \ SYSMODE_SEGOVR_SS) #define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \ SYSMODE_SEGOVR_CS | \ SYSMODE_SEGOVR_DS | \ SYSMODE_SEGOVR_ES | \ SYSMODE_SEGOVR_FS | \ SYSMODE_SEGOVR_GS | \ SYSMODE_SEGOVR_SS | \ SYSMODE_PREFIX_DATA | \ SYSMODE_PREFIX_ADDR) #define INTR_SYNCH 0x1 #endif /* __X86EMU_REGS_H */