| /* |
| * PPC emulation cpu definitions for qemu. |
| * |
| * Copyright (c) 2003 Jocelyn Mayer |
| * |
| * 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 |
| */ |
| #if !defined (__CPU_PPC_H__) |
| #define __CPU_PPC_H__ |
| |
| #define TARGET_LONG_BITS 32 |
| |
| #include "cpu-defs.h" |
| |
| //#define USE_OPEN_FIRMWARE |
| |
| /*** Sign extend constants ***/ |
| /* 8 to 32 bits */ |
| static inline int32_t s_ext8 (uint8_t value) |
| { |
| int8_t *tmp = &value; |
| |
| return *tmp; |
| } |
| |
| /* 16 to 32 bits */ |
| static inline int32_t s_ext16 (uint16_t value) |
| { |
| int16_t *tmp = &value; |
| |
| return *tmp; |
| } |
| |
| /* 24 to 32 bits */ |
| static inline int32_t s_ext24 (uint32_t value) |
| { |
| uint16_t utmp = (value >> 8) & 0xFFFF; |
| int16_t *tmp = &utmp; |
| |
| return (*tmp << 8) | (value & 0xFF); |
| } |
| |
| #include "config.h" |
| #include <setjmp.h> |
| |
| /* Instruction types */ |
| enum { |
| PPC_NONE = 0x0000, |
| PPC_INTEGER = 0x0001, /* CPU has integer operations instructions */ |
| PPC_FLOAT = 0x0002, /* CPU has floating point operations instructions */ |
| PPC_FLOW = 0x0004, /* CPU has flow control instructions */ |
| PPC_MEM = 0x0008, /* CPU has virtual memory instructions */ |
| PPC_RES = 0x0010, /* CPU has ld/st with reservation instructions */ |
| PPC_CACHE = 0x0020, /* CPU has cache control instructions */ |
| PPC_MISC = 0x0040, /* CPU has spr/msr access instructions */ |
| PPC_EXTERN = 0x0080, /* CPU has external control instructions */ |
| PPC_SEGMENT = 0x0100, /* CPU has memory segment instructions */ |
| PPC_CACHE_OPT= 0x0200, |
| PPC_FLOAT_OPT= 0x0400, |
| PPC_MEM_OPT = 0x0800, |
| }; |
| |
| #define PPC_COMMON (PPC_INTEGER | PPC_FLOAT | PPC_FLOW | PPC_MEM | \ |
| PPC_RES | PPC_CACHE | PPC_MISC | PPC_SEGMENT) |
| /* PPC 740/745/750/755 (aka G3) has external access instructions */ |
| #define PPC_750 (PPC_INTEGER | PPC_FLOAT | PPC_FLOW | PPC_MEM | \ |
| PPC_RES | PPC_CACHE | PPC_MISC | PPC_EXTERN | PPC_SEGMENT) |
| |
| typedef struct ppc_tb_t ppc_tb_t; |
| |
| /* Supervisor mode registers */ |
| /* Machine state register */ |
| #define MSR_POW 18 |
| #define MSR_ILE 16 |
| #define MSR_EE 15 |
| #define MSR_PR 14 |
| #define MSR_FP 13 |
| #define MSR_ME 12 |
| #define MSR_FE0 11 |
| #define MSR_SE 10 |
| #define MSR_BE 9 |
| #define MSR_FE1 8 |
| #define MSR_IP 6 |
| #define MSR_IR 5 |
| #define MSR_DR 4 |
| #define MSR_RI 1 |
| #define MSR_LE 0 |
| #define msr_pow env->msr[MSR_POW] |
| #define msr_ile env->msr[MSR_ILE] |
| #define msr_ee env->msr[MSR_EE] |
| #define msr_pr env->msr[MSR_PR] |
| #define msr_fp env->msr[MSR_FP] |
| #define msr_me env->msr[MSR_ME] |
| #define msr_fe0 env->msr[MSR_FE0] |
| #define msr_se env->msr[MSR_SE] |
| #define msr_be env->msr[MSR_BE] |
| #define msr_fe1 env->msr[MSR_FE1] |
| #define msr_ip env->msr[MSR_IP] |
| #define msr_ir env->msr[MSR_IR] |
| #define msr_dr env->msr[MSR_DR] |
| #define msr_ri env->msr[MSR_RI] |
| #define msr_le env->msr[MSR_LE] |
| |
| /* Segment registers */ |
| typedef struct CPUPPCState { |
| /* general purpose registers */ |
| uint32_t gpr[32]; |
| /* floating point registers */ |
| double fpr[32]; |
| /* segment registers */ |
| uint32_t sdr1; |
| uint32_t sr[16]; |
| /* XER */ |
| uint8_t xer[4]; |
| /* Reservation address */ |
| uint32_t reserve; |
| /* machine state register */ |
| uint8_t msr[32]; |
| /* condition register */ |
| uint8_t crf[8]; |
| /* floating point status and control register */ |
| uint8_t fpscr[8]; |
| uint32_t nip; |
| /* special purpose registers */ |
| uint32_t lr; |
| uint32_t ctr; |
| /* BATs */ |
| uint32_t DBAT[2][8]; |
| uint32_t IBAT[2][8]; |
| /* all others */ |
| uint32_t spr[1024]; |
| /* qemu dedicated */ |
| /* temporary float registers */ |
| double ft0; |
| double ft1; |
| double ft2; |
| int interrupt_request; |
| jmp_buf jmp_env; |
| int exception_index; |
| int error_code; |
| int access_type; /* when a memory exception occurs, the access |
| type is stored here */ |
| int user_mode_only; /* user mode only simulation */ |
| struct TranslationBlock *current_tb; /* currently executing TB */ |
| /* soft mmu support */ |
| /* in order to avoid passing too many arguments to the memory |
| write helpers, we store some rarely used information in the CPU |
| context) */ |
| unsigned long mem_write_pc; /* host pc at which the memory was |
| written */ |
| unsigned long mem_write_vaddr; /* target virtual addr at which the |
| memory was written */ |
| /* 0 = kernel, 1 = user (may have 2 = kernel code, 3 = user code ?) */ |
| CPUTLBEntry tlb_read[2][CPU_TLB_SIZE]; |
| CPUTLBEntry tlb_write[2][CPU_TLB_SIZE]; |
| |
| /* ice debug support */ |
| uint32_t breakpoints[MAX_BREAKPOINTS]; |
| int nb_breakpoints; |
| int singlestep_enabled; /* XXX: should use CPU single step mode instead */ |
| |
| /* Time base and decrementer */ |
| ppc_tb_t *tb_env; |
| |
| /* Power management */ |
| int power_mode; |
| |
| /* user data */ |
| void *opaque; |
| } CPUPPCState; |
| |
| CPUPPCState *cpu_ppc_init(void); |
| int cpu_ppc_exec(CPUPPCState *s); |
| void cpu_ppc_close(CPUPPCState *s); |
| /* you can call this signal handler from your SIGBUS and SIGSEGV |
| signal handlers to inform the virtual CPU of exceptions. non zero |
| is returned if the signal was handled by the virtual CPU. */ |
| struct siginfo; |
| int cpu_ppc_signal_handler(int host_signum, struct siginfo *info, |
| void *puc); |
| |
| void do_interrupt (CPUPPCState *env); |
| void cpu_loop_exit(void); |
| |
| void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags); |
| void dump_stack (CPUPPCState *env); |
| |
| uint32_t _load_xer (CPUPPCState *env); |
| void _store_xer (CPUPPCState *env, uint32_t value); |
| uint32_t _load_msr (CPUPPCState *env); |
| void _store_msr (CPUPPCState *env, uint32_t value); |
| |
| /* Time-base and decrementer management */ |
| #ifndef NO_CPU_IO_DEFS |
| uint32_t cpu_ppc_load_tbl (CPUPPCState *env); |
| uint32_t cpu_ppc_load_tbu (CPUPPCState *env); |
| void cpu_ppc_store_tbu (CPUPPCState *env, uint32_t value); |
| void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value); |
| uint32_t cpu_ppc_load_decr (CPUPPCState *env); |
| void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value); |
| #endif |
| |
| #define TARGET_PAGE_BITS 12 |
| #include "cpu-all.h" |
| |
| #define ugpr(n) (env->gpr[n]) |
| #define fprd(n) (env->fpr[n]) |
| #define fprs(n) ((float)env->fpr[n]) |
| #define fpru(n) ((uint32_t)env->fpr[n]) |
| #define fpri(n) ((int32_t)env->fpr[n]) |
| |
| #define SPR_ENCODE(sprn) \ |
| (((sprn) >> 5) | (((sprn) & 0x1F) << 5)) |
| |
| /* User mode SPR */ |
| #define spr(n) env->spr[n] |
| #define XER_SO 31 |
| #define XER_OV 30 |
| #define XER_CA 29 |
| #define XER_BC 0 |
| #define xer_so env->xer[3] |
| #define xer_ov env->xer[2] |
| #define xer_ca env->xer[1] |
| #define xer_bc env->xer[0] |
| |
| #define XER SPR_ENCODE(1) |
| #define LR SPR_ENCODE(8) |
| #define CTR SPR_ENCODE(9) |
| /* VEA mode SPR */ |
| #define V_TBL SPR_ENCODE(268) |
| #define V_TBU SPR_ENCODE(269) |
| /* supervisor mode SPR */ |
| #define DSISR SPR_ENCODE(18) |
| #define DAR SPR_ENCODE(19) |
| #define DECR SPR_ENCODE(22) |
| #define SDR1 SPR_ENCODE(25) |
| #define SRR0 SPR_ENCODE(26) |
| #define SRR1 SPR_ENCODE(27) |
| #define SPRG0 SPR_ENCODE(272) |
| #define SPRG1 SPR_ENCODE(273) |
| #define SPRG2 SPR_ENCODE(274) |
| #define SPRG3 SPR_ENCODE(275) |
| #define SPRG4 SPR_ENCODE(276) |
| #define SPRG5 SPR_ENCODE(277) |
| #define SPRG6 SPR_ENCODE(278) |
| #define SPRG7 SPR_ENCODE(279) |
| #define ASR SPR_ENCODE(280) |
| #define EAR SPR_ENCODE(282) |
| #define O_TBL SPR_ENCODE(284) |
| #define O_TBU SPR_ENCODE(285) |
| #define PVR SPR_ENCODE(287) |
| #define IBAT0U SPR_ENCODE(528) |
| #define IBAT0L SPR_ENCODE(529) |
| #define IBAT1U SPR_ENCODE(530) |
| #define IBAT1L SPR_ENCODE(531) |
| #define IBAT2U SPR_ENCODE(532) |
| #define IBAT2L SPR_ENCODE(533) |
| #define IBAT3U SPR_ENCODE(534) |
| #define IBAT3L SPR_ENCODE(535) |
| #define DBAT0U SPR_ENCODE(536) |
| #define DBAT0L SPR_ENCODE(537) |
| #define DBAT1U SPR_ENCODE(538) |
| #define DBAT1L SPR_ENCODE(539) |
| #define DBAT2U SPR_ENCODE(540) |
| #define DBAT2L SPR_ENCODE(541) |
| #define DBAT3U SPR_ENCODE(542) |
| #define DBAT3L SPR_ENCODE(543) |
| #define IBAT4U SPR_ENCODE(560) |
| #define IBAT4L SPR_ENCODE(561) |
| #define IBAT5U SPR_ENCODE(562) |
| #define IBAT5L SPR_ENCODE(563) |
| #define IBAT6U SPR_ENCODE(564) |
| #define IBAT6L SPR_ENCODE(565) |
| #define IBAT7U SPR_ENCODE(566) |
| #define IBAT7L SPR_ENCODE(567) |
| #define DBAT4U SPR_ENCODE(568) |
| #define DBAT4L SPR_ENCODE(569) |
| #define DBAT5U SPR_ENCODE(570) |
| #define DBAT5L SPR_ENCODE(571) |
| #define DBAT6U SPR_ENCODE(572) |
| #define DBAT6L SPR_ENCODE(573) |
| #define DBAT7U SPR_ENCODE(574) |
| #define DBAT7L SPR_ENCODE(575) |
| #define DABR SPR_ENCODE(1013) |
| #define DABR_MASK 0xFFFFFFF8 |
| #define FPECR SPR_ENCODE(1022) |
| #define PIR SPR_ENCODE(1023) |
| |
| #define TARGET_PAGE_BITS 12 |
| #include "cpu-all.h" |
| |
| /* Memory access type : |
| * may be needed for precise access rights control and precise exceptions. |
| */ |
| enum { |
| /* 1 bit to define user level / supervisor access */ |
| ACCESS_USER = 0x00, |
| ACCESS_SUPER = 0x01, |
| /* Type of instruction that generated the access */ |
| ACCESS_CODE = 0x10, /* Code fetch access */ |
| ACCESS_INT = 0x20, /* Integer load/store access */ |
| ACCESS_FLOAT = 0x30, /* floating point load/store access */ |
| ACCESS_RES = 0x40, /* load/store with reservation */ |
| ACCESS_EXT = 0x50, /* external access */ |
| ACCESS_CACHE = 0x60, /* Cache manipulation */ |
| }; |
| |
| /*****************************************************************************/ |
| /* Exceptions */ |
| enum { |
| EXCP_NONE = -1, |
| /* PPC hardware exceptions : exception vector / 0x100 */ |
| EXCP_RESET = 0x01, /* System reset */ |
| EXCP_MACHINE_CHECK = 0x02, /* Machine check exception */ |
| EXCP_DSI = 0x03, /* Impossible memory access */ |
| EXCP_ISI = 0x04, /* Impossible instruction fetch */ |
| EXCP_EXTERNAL = 0x05, /* External interruption */ |
| EXCP_ALIGN = 0x06, /* Alignment exception */ |
| EXCP_PROGRAM = 0x07, /* Program exception */ |
| EXCP_NO_FP = 0x08, /* No floating point */ |
| EXCP_DECR = 0x09, /* Decrementer exception */ |
| EXCP_RESA = 0x0A, /* Implementation specific */ |
| EXCP_RESB = 0x0B, /* Implementation specific */ |
| EXCP_SYSCALL = 0x0C, /* System call */ |
| EXCP_TRACE = 0x0D, /* Trace exception (optional) */ |
| EXCP_FP_ASSIST = 0x0E, /* Floating-point assist (optional) */ |
| /* MPC740/745/750 & IBM 750 */ |
| EXCP_PERF = 0x0F, /* Performance monitor */ |
| EXCP_IABR = 0x13, /* Instruction address breakpoint */ |
| EXCP_SMI = 0x14, /* System management interrupt */ |
| EXCP_THRM = 0x15, /* Thermal management interrupt */ |
| /* MPC755 */ |
| EXCP_TLBMISS = 0x10, /* Instruction TLB miss */ |
| EXCP_TLBMISS_DL = 0x11, /* Data TLB miss for load */ |
| EXCP_TLBMISS_DS = 0x12, /* Data TLB miss for store */ |
| EXCP_PPC_MAX = 0x16, |
| /* Qemu exception */ |
| EXCP_OFCALL = 0x20, /* Call open-firmware emulator */ |
| EXCP_RTASCALL = 0x21, /* Call RTAS emulator */ |
| /* Special cases where we want to stop translation */ |
| EXCP_MTMSR = 0x104, /* mtmsr instruction: */ |
| /* may change privilege level */ |
| EXCP_BRANCH = 0x108, /* branch instruction */ |
| EXCP_RFI = 0x10C, /* return from interrupt */ |
| EXCP_SYSCALL_USER = 0x110, /* System call in user mode only */ |
| }; |
| /* Error codes */ |
| enum { |
| /* Exception subtypes for EXCP_DSI */ |
| EXCP_DSI_TRANSLATE = 0x01, /* Data address can't be translated */ |
| EXCP_DSI_NOTSUP = 0x02, /* Access type not supported */ |
| EXCP_DSI_PROT = 0x03, /* Memory protection violation */ |
| EXCP_DSI_EXTERNAL = 0x04, /* External access disabled */ |
| EXCP_DSI_DABR = 0x05, /* Data address breakpoint */ |
| /* flags for EXCP_DSI */ |
| EXCP_DSI_DIRECT = 0x10, |
| EXCP_DSI_STORE = 0x20, |
| EXCP_DSI_ECXW = 0x40, |
| /* Exception subtypes for EXCP_ISI */ |
| EXCP_ISI_TRANSLATE = 0x01, /* Code address can't be translated */ |
| EXCP_ISI_NOEXEC = 0x02, /* Try to fetch from a data segment */ |
| EXCP_ISI_GUARD = 0x03, /* Fetch from guarded memory */ |
| EXCP_ISI_PROT = 0x04, /* Memory protection violation */ |
| EXCP_ISI_DIRECT = 0x05, /* Trying to fetch from * |
| * a direct store segment */ |
| /* Exception subtypes for EXCP_ALIGN */ |
| EXCP_ALIGN_FP = 0x01, /* FP alignment exception */ |
| EXCP_ALIGN_LST = 0x02, /* Unaligned mult/extern load/store */ |
| EXCP_ALIGN_LE = 0x03, /* Multiple little-endian access */ |
| EXCP_ALIGN_PROT = 0x04, /* Access cross protection boundary */ |
| EXCP_ALIGN_BAT = 0x05, /* Access cross a BAT/seg boundary */ |
| EXCP_ALIGN_CACHE = 0x06, /* Impossible dcbz access */ |
| /* Exception subtypes for EXCP_PROGRAM */ |
| /* FP exceptions */ |
| EXCP_FP = 0x10, |
| EXCP_FP_OX = 0x01, /* FP overflow */ |
| EXCP_FP_UX = 0x02, /* FP underflow */ |
| EXCP_FP_ZX = 0x03, /* FP divide by zero */ |
| EXCP_FP_XX = 0x04, /* FP inexact */ |
| EXCP_FP_VXNAN = 0x05, /* FP invalid SNaN op */ |
| EXCP_FP_VXISI = 0x06, /* FP invalid infinite substraction */ |
| EXCP_FP_VXIDI = 0x07, /* FP invalid infinite divide */ |
| EXCP_FP_VXZDZ = 0x08, /* FP invalid zero divide */ |
| EXCP_FP_VXIMZ = 0x09, /* FP invalid infinite * zero */ |
| EXCP_FP_VXVC = 0x0A, /* FP invalid compare */ |
| EXCP_FP_VXSOFT = 0x0B, /* FP invalid operation */ |
| EXCP_FP_VXSQRT = 0x0C, /* FP invalid square root */ |
| EXCP_FP_VXCVI = 0x0D, /* FP invalid integer conversion */ |
| /* Invalid instruction */ |
| EXCP_INVAL = 0x20, |
| EXCP_INVAL_INVAL = 0x01, /* Invalid instruction */ |
| EXCP_INVAL_LSWX = 0x02, /* Invalid lswx instruction */ |
| EXCP_INVAL_SPR = 0x03, /* Invalid SPR access */ |
| EXCP_INVAL_FP = 0x04, /* Unimplemented mandatory fp instr */ |
| /* Privileged instruction */ |
| EXCP_PRIV = 0x30, |
| EXCP_PRIV_OPC = 0x01, |
| EXCP_PRIV_REG = 0x02, |
| /* Trap */ |
| EXCP_TRAP = 0x40, |
| }; |
| |
| /*****************************************************************************/ |
| |
| #endif /* !defined (__CPU_PPC_H__) */ |
