/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* CPU type handler.
*
*
*
* Authors: Sarah Walker,
* leilei,
* Miran Grca,
*
* Copyright 2008-2018 Sarah Walker.
* Copyright 2016-2018 leilei.
* Copyright 2016,2018 Miran Grca.
*/
#ifndef EMU_CPU_H
# define EMU_CPU_H
enum {
CPU_8088, /* 808x class CPUs */
CPU_8086,
#ifdef USE_NEC_808X
CPU_V20, /* NEC 808x class CPUs - future proofing */
CPU_V30,
#endif
CPU_286, /* 286 class CPUs */
CPU_386SX, /* 386 class CPUs */
CPU_386DX,
CPU_IBM386SLC,
CPU_IBM486SLC,
CPU_IBM486BL,
CPU_RAPIDCAD,
CPU_486SLC,
CPU_486DLC,
CPU_i486SX, /* 486 class CPUs */
CPU_Am486SX,
CPU_Cx486S,
CPU_i486SX2,
CPU_Am486SX2,
CPU_i486DX,
CPU_i486DX2,
CPU_Am486DX,
CPU_Am486DX2,
CPU_Cx486DX,
CPU_Cx486DX2,
CPU_iDX4,
CPU_Am486DX4,
CPU_Cx486DX4,
CPU_Am5x86,
CPU_Cx5x86,
CPU_WINCHIP, /* 586 class CPUs */
#ifdef USE_NEW_DYNAREC
CPU_WINCHIP2,
#endif
CPU_PENTIUM,
CPU_PENTIUMMMX,
#if (defined(USE_NEW_DYNAREC) || (defined(DEV_BRANCH) && defined(USE_CYRIX_6X86)))
CPU_Cx6x86,
CPU_Cx6x86MX,
CPU_Cx6x86L,
CPU_CxGX1,
#endif
#if (defined(USE_NEW_DYNAREC) || (defined(DEV_BRANCH) && defined(USE_AMD_K)))
CPU_K5,
CPU_5K86,
CPU_K6,
#endif
#ifdef USE_NEW_DYNAREC
CPU_K6_2,
CPU_K6_2C,
CPU_K6_3,
CPU_K6_2P,
CPU_K6_3P,
#endif
CPU_CYRIX3S,
#if defined(DEV_BRANCH) && defined(USE_I686)
CPU_PENTIUMPRO, /* 686 class CPUs */
CPU_PENTIUM2,
CPU_PENTIUM2D,
#endif
CPU_MAX /* Only really needed to close the enum in a way independent of the #ifdef's. */
};
#define MANU_INTEL 0
#define MANU_AMD 1
#define MANU_CYRIX 2
#define MANU_IDT 3
#define MANU_NEC 4
#define CPU_SUPPORTS_DYNAREC 1
#define CPU_REQUIRES_DYNAREC 2
#define CPU_ALTERNATE_XTAL 4
typedef struct {
const char *name;
int cpu_type;
int rspeed;
double multi;
uint32_t edx_reset;
uint32_t cpuid_model;
uint16_t cyrix_id;
uint8_t cpu_flags;
int8_t mem_read_cycles, mem_write_cycles;
int8_t cache_read_cycles, cache_write_cycles;
int8_t atclk_div;
} CPU;
extern CPU cpus_8088[];
extern CPU cpus_8086[];
extern CPU cpus_286[];
extern CPU cpus_i386SX[];
extern CPU cpus_i386DX[];
extern CPU cpus_Am386SX[];
extern CPU cpus_Am386DX[];
extern CPU cpus_486SLC[];
extern CPU cpus_486DLC[];
extern CPU cpus_IBM386SLC[];
extern CPU cpus_IBM486SLC[];
extern CPU cpus_IBM486BL[];
extern CPU cpus_i486S1[];
extern CPU cpus_Am486S1[];
extern CPU cpus_Cx486S1[];
extern CPU cpus_i486[];
extern CPU cpus_Am486[];
extern CPU cpus_Cx486[];
extern CPU cpus_WinChip[];
#ifdef USE_NEW_DYNAREC
extern CPU cpus_WinChip_SS7[];
#endif
extern CPU cpus_Pentium5V[];
extern CPU cpus_Pentium5V50[];
extern CPU cpus_PentiumS5[];
extern CPU cpus_Pentium3V[];
extern CPU cpus_Pentium[];
#if (defined(USE_NEW_DYNAREC) || (defined(DEV_BRANCH) && defined(USE_AMD_K)))
extern CPU cpus_K5[];
extern CPU cpus_K56[];
#endif
#ifdef USE_NEW_DYNAREC
extern CPU cpus_K56_SS7[];
#endif
#if (defined(USE_NEW_DYNAREC) || (defined(DEV_BRANCH) && defined(USE_CYRIX_6X86)))
extern CPU cpus_6x863V[];
extern CPU cpus_6x86[];
#endif
#ifdef USE_NEW_DYNAREC
extern CPU cpus_6x86SS7[];
#endif
extern CPU cpus_Cyrix3[];
#if defined(DEV_BRANCH) && defined(USE_I686)
extern CPU cpus_PentiumPro[];
extern CPU cpus_PentiumII[];
extern CPU cpus_Celeron[];
#endif
#define C_FLAG 0x0001
#define P_FLAG 0x0004
#define A_FLAG 0x0010
#define Z_FLAG 0x0040
#define N_FLAG 0x0080
#define T_FLAG 0x0100
#define I_FLAG 0x0200
#define D_FLAG 0x0400
#define V_FLAG 0x0800
#define NT_FLAG 0x4000
#define VM_FLAG 0x0002 /* in EFLAGS */
#define VIF_FLAG 0x0008 /* in EFLAGS */
#define VIP_FLAG 0x0010 /* in EFLAGS */
#define WP_FLAG 0x10000 /* in CR0 */
#define CR4_VME (1 << 0)
#define CR4_PVI (1 << 1)
#define CR4_PSE (1 << 4)
#define CPL ((cpu_state.seg_cs.access>>5)&3)
#define IOPL ((cpu_state.flags>>12)&3)
#define IOPLp ((!(msw&1)) || (CPL<=IOPL))
typedef union {
uint32_t l;
uint16_t w;
struct {
uint8_t l,
h;
} b;
} x86reg;
typedef struct {
uint32_t base;
uint32_t limit;
uint8_t access;
uint16_t seg;
uint32_t limit_low,
limit_high;
int checked; /*Non-zero if selector is known to be valid*/
} x86seg;
typedef union {
uint64_t q;
int64_t sq;
uint32_t l[2];
int32_t sl[2];
uint16_t w[4];
int16_t sw[4];
uint8_t b[8];
int8_t sb[8];
float f[2];
} MMX_REG;
typedef struct {
uint32_t tr1, tr12;
uint32_t cesr;
uint32_t fcr;
uint64_t fcr2, fcr3;
} msr_t;
typedef union {
uint32_t l;
uint16_t w;
} cr0_t;
struct _cpustate_ {
x86reg regs[8];
uint8_t tag[8];
x86seg *ea_seg;
uint32_t eaaddr;
int flags_op;
uint32_t flags_res;
uint32_t flags_op1,
flags_op2;
uint32_t pc;
uint32_t oldpc;
uint32_t op32;
int TOP;
union {
struct {
int8_t rm,
mod,
reg;
} rm_mod_reg;
int32_t rm_mod_reg_data;
} rm_data;
int8_t ssegs;
int8_t ismmx;
int8_t abrt;
int _cycles;
int cpu_recomp_ins;
uint16_t npxs,
npxc;
double ST[8];
uint16_t MM_w4[8];
MMX_REG MM[8];
uint16_t old_npxc,
new_npxc;
uint32_t last_ea;
#ifdef USE_NEW_DYNAREC
uint32_t old_fp_control, new_fp_control;
#if defined i386 || defined __i386 || defined __i386__ || defined _X86_
uint16_t old_fp_control2, new_fp_control2;
#endif
#if defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined __amd64__
uint32_t trunc_fp_control;
#endif
#endif
x86seg seg_cs,
seg_ds,
seg_es,
seg_ss,
seg_fs,
seg_gs;
uint16_t flags, eflags;
} cpu_state;
/*The cpu_state.flags below must match in both cpu_cur_status and block->status for a block
to be valid*/
#define CPU_STATUS_USE32 (1 << 0)
#define CPU_STATUS_STACK32 (1 << 1)
#define CPU_STATUS_PMODE (1 << 2)
#define CPU_STATUS_V86 (1 << 3)
#define CPU_STATUS_FLAGS 0xffff
/*If the cpu_state.flags below are set in cpu_cur_status, they must be set in block->status.
Otherwise they are ignored*/
#ifdef USE_NEW_DYNAREC
#define CPU_STATUS_NOTFLATDS (1 << 8)
#define CPU_STATUS_NOTFLATSS (1 << 9)
#define CPU_STATUS_MASK 0xff00
#else
#define CPU_STATUS_NOTFLATDS (1 << 16)
#define CPU_STATUS_NOTFLATSS (1 << 17)
#define CPU_STATUS_MASK 0xffff0000
#endif
#ifdef __MSC__
# define COMPILE_TIME_ASSERT(expr) /*nada*/
#else
# ifdef EXTREME_DEBUG
# define COMPILE_TIME_ASSERT(expr) typedef char COMP_TIME_ASSERT[(expr) ? 1 : 0];
# else
# define COMPILE_TIME_ASSERT(expr) /*nada*/
# endif
#endif
COMPILE_TIME_ASSERT(sizeof(cpu_state) <= 128)
#define cpu_state_offset(MEMBER) ((uint8_t)((uintptr_t)&cpu_state.MEMBER - (uintptr_t)&cpu_state - 128))
#define EAX cpu_state.regs[0].l
#define AX cpu_state.regs[0].w
#define AL cpu_state.regs[0].b.l
#define AH cpu_state.regs[0].b.h
#define ECX cpu_state.regs[1].l
#define CX cpu_state.regs[1].w
#define CL cpu_state.regs[1].b.l
#define CH cpu_state.regs[1].b.h
#define EDX cpu_state.regs[2].l
#define DX cpu_state.regs[2].w
#define DL cpu_state.regs[2].b.l
#define DH cpu_state.regs[2].b.h
#define EBX cpu_state.regs[3].l
#define BX cpu_state.regs[3].w
#define BL cpu_state.regs[3].b.l
#define BH cpu_state.regs[3].b.h
#define ESP cpu_state.regs[4].l
#define EBP cpu_state.regs[5].l
#define ESI cpu_state.regs[6].l
#define EDI cpu_state.regs[7].l
#define SP cpu_state.regs[4].w
#define BP cpu_state.regs[5].w
#define SI cpu_state.regs[6].w
#define DI cpu_state.regs[7].w
#define cycles cpu_state._cycles
#define cpu_rm cpu_state.rm_data.rm_mod_reg.rm
#define cpu_mod cpu_state.rm_data.rm_mod_reg.mod
#define cpu_reg cpu_state.rm_data.rm_mod_reg.reg
#define CR4_TSD (1 << 2)
#define CR4_DE (1 << 3)
#define CR4_MCE (1 << 6)
#define CR4_PCE (1 << 8)
#define CR4_OSFXSR (1 << 9)
/* Global variables. */
extern int cpu_iscyrix;
extern int cpu_16bitbus;
extern int cpu_busspeed, cpu_pci_speed;
extern int cpu_multi;
extern double cpu_dmulti;
extern int cpu_cyrix_alignment; /*Cyrix 5x86/6x86 only has data misalignment
penalties when crossing 8-byte boundaries*/
extern int is8086, is286, is386, is486, is486sx, is486dx, is486sx2, is486dx2, isdx4;
extern int isibmcpu;
extern int is_rapidcad;
extern int hasfpu;
#define CPU_FEATURE_RDTSC (1 << 0)
#define CPU_FEATURE_MSR (1 << 1)
#define CPU_FEATURE_MMX (1 << 2)
#define CPU_FEATURE_CR4 (1 << 3)
#define CPU_FEATURE_VME (1 << 4)
#define CPU_FEATURE_CX8 (1 << 5)
#define CPU_FEATURE_3DNOW (1 << 6)
extern uint32_t cpu_features;
extern int in_smm, smi_line, smi_latched;
extern uint32_t smbase;
#ifdef USE_NEW_DYNAREC
extern uint16_t cpu_cur_status;
#else
extern uint32_t cpu_cur_status;
#endif
extern uint64_t cpu_CR4_mask;
extern uint64_t tsc;
extern msr_t msr;
extern uint8_t opcode;
extern int insc;
extern int fpucount;
extern float mips,flops;
extern int clockrate;
extern int cgate16;
extern int cpl_override;
extern int CPUID;
extern uint64_t xt_cpu_multi;
extern int isa_cycles;
extern uint32_t oldds,oldss,olddslimit,oldsslimit,olddslimitw,oldsslimitw;
extern int ins,output;
extern uint32_t pccache;
extern uint8_t *pccache2;
extern double bus_timing, pci_timing;
extern uint64_t pmc[2];
extern uint16_t temp_seg_data[4];
extern uint16_t cs_msr;
extern uint32_t esp_msr;
extern uint32_t eip_msr;
/* For the AMD K6. */
extern uint64_t star;
#define FPU_CW_Reserved_Bits (0xe0c0)
extern cr0_t CR0;
#define cr0 CR0.l
#define msw CR0.w
extern uint32_t cr2, cr3, cr4;
extern uint32_t dr[8];
/*Segments -
_cs,_ds,_es,_ss are the segment structures
CS,DS,ES,SS is the 16-bit data
cs,ds,es,ss are defines to the bases*/
extern x86seg gdt,ldt,idt,tr;
extern x86seg _oldds;
#define CS cpu_state.seg_cs.seg
#define DS cpu_state.seg_ds.seg
#define ES cpu_state.seg_es.seg
#define SS cpu_state.seg_ss.seg
#define FS cpu_state.seg_fs.seg
#define GS cpu_state.seg_gs.seg
#define cs cpu_state.seg_cs.base
#define ds cpu_state.seg_ds.base
#define es cpu_state.seg_es.base
#define ss cpu_state.seg_ss.base
#define fs_seg cpu_state.seg_fs.base
#define gs cpu_state.seg_gs.base
#define ISA_CYCLES(x) (x * isa_cycles)
extern int cpu_cycles_read, cpu_cycles_read_l, cpu_cycles_write, cpu_cycles_write_l;
extern int cpu_prefetch_cycles, cpu_prefetch_width, cpu_mem_prefetch_cycles, cpu_rom_prefetch_cycles;
extern int cpu_waitstates;
extern int cpu_cache_int_enabled, cpu_cache_ext_enabled;
extern int cpu_pci_speed;
extern int timing_rr;
extern int timing_mr, timing_mrl;
extern int timing_rm, timing_rml;
extern int timing_mm, timing_mml;
extern int timing_bt, timing_bnt;
extern int timing_int, timing_int_rm, timing_int_v86, timing_int_pm;
extern int timing_int_pm_outer, timing_iret_rm, timing_iret_v86, timing_iret_pm;
extern int timing_iret_pm_outer, timing_call_rm, timing_call_pm;
extern int timing_call_pm_gate, timing_call_pm_gate_inner;
extern int timing_retf_rm, timing_retf_pm, timing_retf_pm_outer;
extern int timing_jmp_rm, timing_jmp_pm, timing_jmp_pm_gate;
extern int timing_misaligned;
extern CPU cpus_pcjr[]; // FIXME: should be in machine file!
extern CPU cpus_europc[]; // FIXME: should be in machine file!
extern CPU cpus_pc1512[]; // FIXME: should be in machine file!
extern CPU cpus_ibmat[]; // FIXME: should be in machine file!
extern CPU cpus_ibmxt286[]; // FIXME: should be in machine file!
extern CPU cpus_ps1_m2011[]; // FIXME: should be in machine file!
extern CPU cpus_ps2_m30_286[]; // FIXME: should be in machine file!
#if 0
extern CPU cpus_acer[]; // FIXME: should be in machine file!
#endif
/* Functions. */
extern int cpu_has_feature(int feature);
#ifdef USE_NEW_DYNAREC
extern void loadseg_dynarec(uint16_t seg, x86seg *s);
extern int loadseg(uint16_t seg, x86seg *s);
extern void loadcs(uint16_t seg);
#else
extern void loadseg(uint16_t seg, x86seg *s);
extern void loadcs(uint16_t seg);
#endif
extern char *cpu_current_pc(char *bufp);
extern void cpu_update_waitstates(void);
extern void cpu_set(void);
extern void cpu_CPUID(void);
extern void cpu_RDMSR(void);
extern void cpu_WRMSR(void);
extern int checkio(int port);
extern void codegen_block_end(void);
extern void codegen_reset(void);
extern void cpu_set_edx(void);
extern int divl(uint32_t val);
extern void execx86(int cycs);
extern void enter_smm();
extern void leave_smm();
extern void exec386(int cycs);
extern void exec386_dynarec(int cycs);
extern int idivl(int32_t val);
#ifdef USE_NEW_DYNAREC
extern void loadcscall(uint16_t seg, uint32_t old_pc);
extern void loadcsjmp(uint16_t seg, uint32_t old_pc);
extern void pmodeint(int num, int soft);
extern void pmoderetf(int is32, uint16_t off);
extern void pmodeiret(int is32);
#else
extern void loadcscall(uint16_t seg);
extern void loadcsjmp(uint16_t seg, uint32_t old_pc);
extern void pmodeint(int num, int soft);
extern void pmoderetf(int is32, uint16_t off);
extern void pmodeiret(int is32);
#endif
extern void resetmcr(void);
extern void resetx86(void);
extern void refreshread(void);
extern void resetreadlookup(void);
extern void softresetx86(void);
extern void x86_int(int num);
extern void x86_int_sw(int num);
extern int x86_int_sw_rm(int num);
extern void x86gpf(char *s, uint16_t error);
extern void x86np(char *s, uint16_t error);
extern void x86ss(char *s, uint16_t error);
extern void x86ts(char *s, uint16_t error);
#ifdef ENABLE_808X_LOG
extern void dumpregs(int __force);
extern void x87_dumpregs(void);
extern void x87_reset(void);
#endif
extern int cpu_effective, cpu_alt_reset;
extern void cpu_dynamic_switch(int new_cpu);
extern void cpu_ven_reset(void);
#endif /*EMU_CPU_H*/