/* * i386 execution defines * * Copyright (c) 2003 Fabrice Bellard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "dyngen-exec.h" /* at least 4 register variables are defines */ register struct CPUX86State *env asm(AREG0); register uint32_t T0 asm(AREG1); register uint32_t T1 asm(AREG2); register uint32_t T2 asm(AREG3); #define A0 T2 /* if more registers are available, we define some registers too */ #ifdef AREG4 register uint32_t EAX asm(AREG4); #define reg_EAX #endif #ifdef AREG5 register uint32_t ESP asm(AREG5); #define reg_ESP #endif #ifdef AREG6 register uint32_t EBP asm(AREG6); #define reg_EBP #endif #ifdef AREG7 register uint32_t ECX asm(AREG7); #define reg_ECX #endif #ifdef AREG8 register uint32_t EDX asm(AREG8); #define reg_EDX #endif #ifdef AREG9 register uint32_t EBX asm(AREG9); #define reg_EBX #endif #ifdef AREG10 register uint32_t ESI asm(AREG10); #define reg_ESI #endif #ifdef AREG11 register uint32_t EDI asm(AREG11); #define reg_EDI #endif extern FILE *logfile; extern int loglevel; #ifndef reg_EAX #define EAX (env->regs[R_EAX]) #endif #ifndef reg_ECX #define ECX (env->regs[R_ECX]) #endif #ifndef reg_EDX #define EDX (env->regs[R_EDX]) #endif #ifndef reg_EBX #define EBX (env->regs[R_EBX]) #endif #ifndef reg_ESP #define ESP (env->regs[R_ESP]) #endif #ifndef reg_EBP #define EBP (env->regs[R_EBP]) #endif #ifndef reg_ESI #define ESI (env->regs[R_ESI]) #endif #ifndef reg_EDI #define EDI (env->regs[R_EDI]) #endif #define EIP (env->eip) #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) #ifdef USE_FP_CONVERT #define FP_CONVERT (env->fp_convert) #endif #include "cpu-i386.h" #include "exec.h" typedef struct CCTable { int (*compute_all)(void); /* return all the flags */ int (*compute_c)(void); /* return the C flag */ } CCTable; extern CCTable cc_table[]; void load_seg(int seg_reg, int selector, unsigned cur_eip); void jmp_seg(int selector, unsigned int new_eip); void helper_iret_protected(int shift); void helper_lldt_T0(void); void helper_ltr_T0(void); void helper_movl_crN_T0(int reg); void helper_movl_drN_T0(int reg); void helper_invlpg(unsigned int addr); void cpu_x86_update_cr0(CPUX86State *env); void cpu_x86_update_cr3(CPUX86State *env); void cpu_x86_flush_tlb(CPUX86State *env, uint32_t addr); int cpu_x86_handle_mmu_fault(CPUX86State *env, uint32_t addr, int is_write); void __hidden cpu_lock(void); void __hidden cpu_unlock(void); void do_interrupt(int intno, int is_int, int error_code, unsigned int next_eip); void do_interrupt_user(int intno, int is_int, int error_code, unsigned int next_eip); void raise_interrupt(int intno, int is_int, int error_code, unsigned int next_eip); void raise_exception_err(int exception_index, int error_code); void raise_exception(int exception_index); void __hidden cpu_loop_exit(void); void helper_fsave(uint8_t *ptr, int data32); void helper_frstor(uint8_t *ptr, int data32); void OPPROTO op_movl_eflags_T0(void); void OPPROTO op_movl_T0_eflags(void); void raise_interrupt(int intno, int is_int, int error_code, unsigned int next_eip); void raise_exception_err(int exception_index, int error_code); void raise_exception(int exception_index); void helper_divl_EAX_T0(uint32_t eip); void helper_idivl_EAX_T0(uint32_t eip); void helper_cmpxchg8b(void); void helper_cpuid(void); void helper_rdtsc(void); void helper_rdmsr(void); void helper_wrmsr(void); void helper_lsl(void); void helper_lar(void); #ifdef USE_X86LDOUBLE /* use long double functions */ #define lrint lrintl #define llrint llrintl #define fabs fabsl #define sin sinl #define cos cosl #define sqrt sqrtl #define pow powl #define log logl #define tan tanl #define atan2 atan2l #define floor floorl #define ceil ceill #define rint rintl #endif extern int lrint(CPU86_LDouble x); extern int64_t llrint(CPU86_LDouble x); extern CPU86_LDouble fabs(CPU86_LDouble x); extern CPU86_LDouble sin(CPU86_LDouble x); extern CPU86_LDouble cos(CPU86_LDouble x); extern CPU86_LDouble sqrt(CPU86_LDouble x); extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble); extern CPU86_LDouble log(CPU86_LDouble x); extern CPU86_LDouble tan(CPU86_LDouble x); extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble); extern CPU86_LDouble floor(CPU86_LDouble x); extern CPU86_LDouble ceil(CPU86_LDouble x); extern CPU86_LDouble rint(CPU86_LDouble x); #define RC_MASK 0xc00 #define RC_NEAR 0x000 #define RC_DOWN 0x400 #define RC_UP 0x800 #define RC_CHOP 0xc00 #define MAXTAN 9223372036854775808.0 #ifdef __arm__ /* we have no way to do correct rounding - a FPU emulator is needed */ #define FE_DOWNWARD FE_TONEAREST #define FE_UPWARD FE_TONEAREST #define FE_TOWARDZERO FE_TONEAREST #endif #ifdef USE_X86LDOUBLE /* only for x86 */ typedef union { long double d; struct { unsigned long long lower; unsigned short upper; } l; } CPU86_LDoubleU; /* the following deal with x86 long double-precision numbers */ #define MAXEXPD 0x7fff #define EXPBIAS 16383 #define EXPD(fp) (fp.l.upper & 0x7fff) #define SIGND(fp) ((fp.l.upper) & 0x8000) #define MANTD(fp) (fp.l.lower) #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS #else /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */ typedef union { double d; #if !defined(WORDS_BIGENDIAN) && !defined(__arm__) struct { uint32_t lower; int32_t upper; } l; #else struct { int32_t upper; uint32_t lower; } l; #endif #ifndef __arm__ int64_t ll; #endif } CPU86_LDoubleU; /* the following deal with IEEE double-precision numbers */ #define MAXEXPD 0x7ff #define EXPBIAS 1023 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF) #define SIGND(fp) ((fp.l.upper) & 0x80000000) #ifdef __arm__ #define MANTD(fp) (fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32)) #else #define MANTD(fp) (fp.ll & ((1LL << 52) - 1)) #endif #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20) #endif static inline void fpush(void) { env->fpstt = (env->fpstt - 1) & 7; env->fptags[env->fpstt] = 0; /* validate stack entry */ } static inline void fpop(void) { env->fptags[env->fpstt] = 1; /* invvalidate stack entry */ env->fpstt = (env->fpstt + 1) & 7; } #ifndef USE_X86LDOUBLE static inline CPU86_LDouble helper_fldt(uint8_t *ptr) { CPU86_LDoubleU temp; int upper, e; uint64_t ll; /* mantissa */ upper = lduw(ptr + 8); /* XXX: handle overflow ? */ e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ e |= (upper >> 4) & 0x800; /* sign */ ll = (ldq(ptr) >> 11) & ((1LL << 52) - 1); #ifdef __arm__ temp.l.upper = (e << 20) | (ll >> 32); temp.l.lower = ll; #else temp.ll = ll | ((uint64_t)e << 52); #endif return temp.d; } static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr) { CPU86_LDoubleU temp; int e; temp.d = f; /* mantissa */ stq(ptr, (MANTD(temp) << 11) | (1LL << 63)); /* exponent + sign */ e = EXPD(temp) - EXPBIAS + 16383; e |= SIGND(temp) >> 16; stw(ptr + 8, e); } #endif const CPU86_LDouble f15rk[7]; void helper_fldt_ST0_A0(void); void helper_fstt_ST0_A0(void); void helper_fbld_ST0_A0(void); void helper_fbst_ST0_A0(void); void helper_f2xm1(void); void helper_fyl2x(void); void helper_fptan(void); void helper_fpatan(void); void helper_fxtract(void); void helper_fprem1(void); void helper_fprem(void); void helper_fyl2xp1(void); void helper_fsqrt(void); void helper_fsincos(void); void helper_frndint(void); void helper_fscale(void); void helper_fsin(void); void helper_fcos(void); void helper_fxam_ST0(void); void helper_fstenv(uint8_t *ptr, int data32); void helper_fldenv(uint8_t *ptr, int data32); void helper_fsave(uint8_t *ptr, int data32); void helper_frstor(uint8_t *ptr, int data32); const uint8_t parity_table[256]; const uint8_t rclw_table[32]; const uint8_t rclb_table[32]; static inline uint32_t compute_eflags(void) { return env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); } #define FL_UPDATE_MASK32 (TF_MASK | AC_MASK | ID_MASK) #define FL_UPDATE_CPL0_MASK (TF_MASK | IF_MASK | IOPL_MASK | NT_MASK | \ RF_MASK | AC_MASK | ID_MASK) /* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */ static inline void load_eflags(int eflags, int update_mask) { CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); DF = 1 - (2 * ((eflags >> 10) & 1)); env->eflags = (env->eflags & ~update_mask) | (eflags & update_mask); }