diff options
Diffstat (limited to 'op-i386.c')
| -rw-r--r-- | op-i386.c | 221 |
1 files changed, 20 insertions, 201 deletions
@@ -1,109 +1,25 @@ -#define DEBUG_EXEC - -typedef unsigned char uint8_t; -typedef unsigned short uint16_t; -typedef unsigned int uint32_t; -typedef unsigned long long uint64_t; - -typedef signed char int8_t; -typedef signed short int16_t; -typedef signed int int32_t; -typedef signed long long int64_t; - -#define bswap32(x) \ -({ \ - uint32_t __x = (x); \ - ((uint32_t)( \ - (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ - (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ - (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ - (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \ -}) - -#define NULL 0 -#include <fenv.h> - -typedef struct FILE FILE; -extern FILE *logfile; -extern int loglevel; -extern int fprintf(FILE *, const char *, ...); - -#ifdef __i386__ -register unsigned int T0 asm("ebx"); -register unsigned int T1 asm("esi"); -register unsigned int A0 asm("edi"); -register struct CPUX86State *env asm("ebp"); -#endif -#ifdef __powerpc__ -register unsigned int T0 asm("r24"); -register unsigned int T1 asm("r25"); -register unsigned int A0 asm("r26"); -register struct CPUX86State *env asm("r27"); -#endif -#ifdef __arm__ -register unsigned int T0 asm("r4"); -register unsigned int T1 asm("r5"); -register unsigned int A0 asm("r6"); -register struct CPUX86State *env asm("r7"); -#endif -#ifdef __mips__ -register unsigned int T0 asm("s0"); -register unsigned int T1 asm("s1"); -register unsigned int A0 asm("s2"); -register struct CPUX86State *env asm("s3"); -#endif -#ifdef __sparc__ -register unsigned int T0 asm("l0"); -register unsigned int T1 asm("l1"); -register unsigned int A0 asm("l2"); -register struct CPUX86State *env asm("l3"); -#endif - -/* force GCC to generate only one epilog at the end of the function */ -#define FORCE_RET() asm volatile (""); - -#ifndef OPPROTO -#define OPPROTO -#endif - -#define xglue(x, y) x ## y -#define glue(x, y) xglue(x, y) - -#define EAX (env->regs[R_EAX]) -#define ECX (env->regs[R_ECX]) -#define EDX (env->regs[R_EDX]) -#define EBX (env->regs[R_EBX]) -#define ESP (env->regs[R_ESP]) -#define EBP (env->regs[R_EBP]) -#define ESI (env->regs[R_ESI]) -#define EDI (env->regs[R_EDI]) -#define PC (env->pc) -#define DF (env->df) - -#define CC_SRC (env->cc_src) -#define CC_DST (env->cc_dst) -#define CC_OP (env->cc_op) - -/* float macros */ -#define FT0 (env->ft0) -#define ST0 (env->fpregs[env->fpstt]) -#define ST(n) (env->fpregs[(env->fpstt + (n)) & 7]) -#define ST1 ST(1) - -extern int __op_param1, __op_param2, __op_param3; -#define PARAM1 ((long)(&__op_param1)) -#define PARAM2 ((long)(&__op_param2)) -#define PARAM3 ((long)(&__op_param3)) - -#include "cpu-i386.h" - -typedef struct CCTable { - int (*compute_all)(void); /* return all the flags */ - int (*compute_c)(void); /* return the C flag */ -} CCTable; +/* + * i386 micro operations + * + * Copyright (c) 2003 Fabrice Bellard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include "exec-i386.h" /* NOTE: data are not static to force relocation generation by GCC */ -extern CCTable cc_table[]; uint8_t parity_table[256] = { CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, @@ -1878,100 +1794,3 @@ void OPPROTO op_fldcw_A0(void) fesetround(rnd_type); } -/* main execution loop */ -uint8_t code_gen_buffer[65536]; - -#ifdef DEBUG_EXEC -static const char *cc_op_str[] = { - "DYNAMIC", - "EFLAGS", - "MUL", - "ADDB", - "ADDW", - "ADDL", - "ADCB", - "ADCW", - "ADCL", - "SUBB", - "SUBW", - "SUBL", - "SBBB", - "SBBW", - "SBBL", - "LOGICB", - "LOGICW", - "LOGICL", - "INCB", - "INCW", - "INCL", - "DECB", - "DECW", - "DECL", - "SHLB", - "SHLW", - "SHLL", - "SARB", - "SARW", - "SARL", -}; -#endif - -int cpu_x86_exec(CPUX86State *env1) -{ - int saved_T0, saved_T1, saved_A0; - CPUX86State *saved_env; - int code_gen_size, ret; - void (*gen_func)(void); - - /* first we save global registers */ - saved_T0 = T0; - saved_T1 = T1; - saved_A0 = A0; - saved_env = env; - env = env1; - - /* prepare setjmp context for exception handling */ - if (setjmp(env->jmp_env) == 0) { - for(;;) { -#ifdef DEBUG_EXEC - if (loglevel) { - int eflags; - eflags = cc_table[CC_OP].compute_all(); - eflags |= (DF & DIRECTION_FLAG); - fprintf(logfile, - "EAX=%08x EBX=%08X ECX=%08x EDX=%08x\n" - "ESI=%08x EDI=%08X EBP=%08x ESP=%08x\n" - "CCS=%08x CCD=%08x CCO=%-8s EFL=%c%c%c%c%c%c%c\n", - env->regs[R_EAX], env->regs[R_EBX], env->regs[R_ECX], env->regs[R_EDX], - env->regs[R_ESI], env->regs[R_EDI], env->regs[R_EBP], env->regs[R_ESP], - env->cc_src, env->cc_dst, cc_op_str[env->cc_op], - eflags & DIRECTION_FLAG ? 'D' : '-', - eflags & CC_O ? 'O' : '-', - eflags & CC_S ? 'S' : '-', - eflags & CC_Z ? 'Z' : '-', - eflags & CC_A ? 'A' : '-', - eflags & CC_P ? 'P' : '-', - eflags & CC_C ? 'C' : '-' - ); -#if 1 - fprintf(logfile, "ST0=%f ST1=%f ST2=%f ST3=%f\n", - (double)ST0, (double)ST1, (double)ST(2), (double)ST(3)); -#endif - } -#endif - cpu_x86_gen_code(code_gen_buffer, sizeof(code_gen_buffer), - &code_gen_size, (uint8_t *)env->pc); - /* execute the generated code */ - gen_func = (void *)code_gen_buffer; - gen_func(); - } - } - ret = env->exception_index; - - /* restore global registers */ - T0 = saved_T0; - T1 = saved_T1; - A0 = saved_A0; - env = saved_env; - return ret; -} |