/* * 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 "config.h" #include "dyngen-exec.h" /* XXX: factorize this mess */ #ifdef TARGET_X86_64 #define TARGET_LONG_BITS 64 #else #define TARGET_LONG_BITS 32 #endif #include "cpu-defs.h" /* at least 4 register variables are defined */ register struct CPUX86State *env asm(AREG0); #if TARGET_LONG_BITS > HOST_LONG_BITS /* no registers can be used */ #define T0 (env->t0) #define T1 (env->t1) #define T2 (env->t2) #else /* XXX: use unsigned long instead of target_ulong - better code will be generated for 64 bit CPUs */ register target_ulong T0 asm(AREG1); register target_ulong T1 asm(AREG2); register target_ulong T2 asm(AREG3); /* if more registers are available, we define some registers too */ #ifdef AREG4 register target_ulong EAX asm(AREG4); #define reg_EAX #endif #ifdef AREG5 register target_ulong ESP asm(AREG5); #define reg_ESP #endif #ifdef AREG6 register target_ulong EBP asm(AREG6); #define reg_EBP #endif #ifdef AREG7 register target_ulong ECX asm(AREG7); #define reg_ECX #endif #ifdef AREG8 register target_ulong EDX asm(AREG8); #define reg_EDX #endif #ifdef AREG9 register target_ulong EBX asm(AREG9); #define reg_EBX #endif #ifdef AREG10 register target_ulong ESI asm(AREG10); #define reg_ESI #endif #ifdef AREG11 register target_ulong EDI asm(AREG11); #define reg_EDI #endif #endif /* ! (TARGET_LONG_BITS > HOST_LONG_BITS) */ #define A0 T2 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].d) #define ST(n) (env->fpregs[(env->fpstt + (n)) & 7].d) #define ST1 ST(1) #ifdef USE_FP_CONVERT #define FP_CONVERT (env->fp_convert) #endif #include "cpu.h" #include "exec-all.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); void helper_ljmp_protected_T0_T1(int next_eip); void helper_lcall_real_T0_T1(int shift, int next_eip); void helper_lcall_protected_T0_T1(int shift, int next_eip); void helper_iret_real(int shift); void helper_iret_protected(int shift, int next_eip); void helper_lret_protected(int shift, int addend); 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(target_ulong addr); void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0); void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3); void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4); void cpu_x86_flush_tlb(CPUX86State *env, target_ulong addr); int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr, int is_write, int is_user, int is_softmmu); void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr); void __hidden cpu_lock(void); void __hidden cpu_unlock(void); void do_interrupt(int intno, int is_int, int error_code, target_ulong next_eip, int is_hw); void do_interrupt_user(int intno, int is_int, int error_code, target_ulong next_eip); void raise_interrupt(int intno, int is_int, int error_code, int next_eip_addend); void raise_exception_err(int exception_index, int error_code); void raise_exception(int exception_index); void __hidden cpu_loop_exit(void); void OPPROTO op_movl_eflags_T0(void); void OPPROTO op_movl_T0_eflags(void); void helper_divl_EAX_T0(void); void helper_idivl_EAX_T0(void); void helper_mulq_EAX_T0(void); void helper_imulq_EAX_T0(void); void helper_imulq_T0_T1(void); void helper_divq_EAX_T0(void); void helper_idivq_EAX_T0(void); void helper_cmpxchg8b(void); void helper_cpuid(void); void helper_enter_level(int level, int data32); void helper_enter64_level(int level, int data64); void helper_sysenter(void); void helper_sysexit(void); void helper_syscall(int next_eip_addend); void helper_sysret(int dflag); void helper_rdtsc(void); void helper_rdmsr(void); void helper_wrmsr(void); void helper_lsl(void); void helper_lar(void); void helper_verr(void); void helper_verw(void); void check_iob_T0(void); void check_iow_T0(void); void check_iol_T0(void); void check_iob_DX(void); void check_iow_DX(void); void check_iol_DX(void); #if !defined(CONFIG_USER_ONLY) #include "softmmu_exec.h" static inline double ldfq(target_ulong ptr) { union { double d; uint64_t i; } u; u.i = ldq(ptr); return u.d; } static inline void stfq(target_ulong ptr, double v) { union { double d; uint64_t i; } u; u.d = v; stq(ptr, u.i); } static inline float ldfl(target_ulong ptr) { union { float f; uint32_t i; } u; u.i = ldl(ptr); return u.f; } static inline void stfl(target_ulong ptr, float v) { union { float f; uint32_t i; } u; u.f = v; stl(ptr, u.i); } #endif /* !defined(CONFIG_USER_ONLY) */ #ifdef USE_X86LDOUBLE /* use long double functions */ #define floatx_to_int32 floatx80_to_int32 #define floatx_to_int64 floatx80_to_int64 #define floatx_to_int32_round_to_zero floatx80_to_int32_round_to_zero #define floatx_to_int64_round_to_zero floatx80_to_int64_round_to_zero #define floatx_abs floatx80_abs #define floatx_chs floatx80_chs #define floatx_round_to_int floatx80_round_to_int #define floatx_compare floatx80_compare #define floatx_compare_quiet floatx80_compare_quiet #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 ldexp ldexpl #else #define floatx_to_int32 float64_to_int32 #define floatx_to_int64 float64_to_int64 #define floatx_to_int32_round_to_zero float64_to_int32_round_to_zero #define floatx_to_int64_round_to_zero float64_to_int64_round_to_zero #define floatx_abs float64_abs #define floatx_chs float64_chs #define floatx_round_to_int float64_round_to_int #define floatx_compare float64_compare #define floatx_compare_quiet float64_compare_quiet #endif 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); #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 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(target_ulong 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, target_ulong 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); } #else /* XXX: same endianness assumed */ #ifdef CONFIG_USER_ONLY static inline CPU86_LDouble helper_fldt(target_ulong ptr) { return *(CPU86_LDouble *)ptr; } static inline void helper_fstt(CPU86_LDouble f, target_ulong ptr) { *(CPU86_LDouble *)ptr = f; } #else /* we use memory access macros */ static inline CPU86_LDouble helper_fldt(target_ulong ptr) { CPU86_LDoubleU temp; temp.l.lower = ldq(ptr); temp.l.upper = lduw(ptr + 8); return temp.d; } static inline void helper_fstt(CPU86_LDouble f, target_ulong ptr) { CPU86_LDoubleU temp; temp.d = f; stq(ptr, temp.l.lower); stw(ptr + 8, temp.l.upper); } #endif /* !CONFIG_USER_ONLY */ #endif /* USE_X86LDOUBLE */ #define FPUS_IE (1 << 0) #define FPUS_DE (1 << 1) #define FPUS_ZE (1 << 2) #define FPUS_OE (1 << 3) #define FPUS_UE (1 << 4) #define FPUS_PE (1 << 5) #define FPUS_SF (1 << 6) #define FPUS_SE (1 << 7) #define FPUS_B (1 << 15) #define FPUC_EM 0x3f extern const CPU86_LDouble f15rk[7]; void helper_fldt_ST0_A0(void); void helper_fstt_ST0_A0(void); void fpu_raise_exception(void); CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b); 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(target_ulong ptr, int data32); void helper_fldenv(target_ulong ptr, int data32); void helper_fsave(target_ulong ptr, int data32); void helper_frstor(target_ulong ptr, int data32); void helper_fxsave(target_ulong ptr, int data64); void helper_fxrstor(target_ulong ptr, int data64); void restore_native_fp_state(CPUState *env); void save_native_fp_state(CPUState *env); float approx_rsqrt(float a); float approx_rcp(float a); void update_fp_status(void); extern const uint8_t parity_table[256]; extern const uint8_t rclw_table[32]; extern 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); } /* 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); } static inline void env_to_regs(void) { #ifdef reg_EAX EAX = env->regs[R_EAX]; #endif #ifdef reg_ECX ECX = env->regs[R_ECX]; #endif #ifdef reg_EDX EDX = env->regs[R_EDX]; #endif #ifdef reg_EBX EBX = env->regs[R_EBX]; #endif #ifdef reg_ESP ESP = env->regs[R_ESP]; #endif #ifdef reg_EBP EBP = env->regs[R_EBP]; #endif #ifdef reg_ESI ESI = env->regs[R_ESI]; #endif #ifdef reg_EDI EDI = env->regs[R_EDI]; #endif } static inline void regs_to_env(void) { #ifdef reg_EAX env->regs[R_EAX] = EAX; #endif #ifdef reg_ECX env->regs[R_ECX] = ECX; #endif #ifdef reg_EDX env->regs[R_EDX] = EDX; #endif #ifdef reg_EBX env->regs[R_EBX] = EBX; #endif #ifdef reg_ESP env->regs[R_ESP] = ESP; #endif #ifdef reg_EBP env->regs[R_EBP] = EBP; #endif #ifdef reg_ESI env->regs[R_ESI] = ESI; #endif #ifdef reg_EDI env->regs[R_EDI] = EDI; #endif }