diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/qemu-symbian-svp/target-arm/cpu.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/qemu-symbian-svp/target-arm/cpu.h Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,453 @@ +/* + * ARM virtual CPU header + * + * 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 + */ +#ifndef CPU_ARM_H +#define CPU_ARM_H + +#define TARGET_LONG_BITS 32 + +#define ELF_MACHINE EM_ARM + +#include "cpu-defs.h" + +#include "softfloat.h" + +#define TARGET_HAS_ICE 1 + +#define EXCP_UDEF 1 /* undefined instruction */ +#define EXCP_SWI 2 /* software interrupt */ +#define EXCP_PREFETCH_ABORT 3 +#define EXCP_DATA_ABORT 4 +#define EXCP_IRQ 5 +#define EXCP_FIQ 6 +#define EXCP_BKPT 7 +#define EXCP_EXCEPTION_EXIT 8 /* Return from v7M exception. */ +#define EXCP_KERNEL_TRAP 9 /* Jumped to kernel code page. */ + +#define ARMV7M_EXCP_RESET 1 +#define ARMV7M_EXCP_NMI 2 +#define ARMV7M_EXCP_HARD 3 +#define ARMV7M_EXCP_MEM 4 +#define ARMV7M_EXCP_BUS 5 +#define ARMV7M_EXCP_USAGE 6 +#define ARMV7M_EXCP_SVC 11 +#define ARMV7M_EXCP_DEBUG 12 +#define ARMV7M_EXCP_PENDSV 14 +#define ARMV7M_EXCP_SYSTICK 15 + +typedef void ARMWriteCPFunc(void *opaque, int cp_info, + int srcreg, int operand, uint32_t value); +typedef uint32_t ARMReadCPFunc(void *opaque, int cp_info, + int dstreg, int operand); + +struct arm_boot_info; + +#define NB_MMU_MODES 2 + +/* We currently assume float and double are IEEE single and double + precision respectively. + Doing runtime conversions is tricky because VFP registers may contain + integer values (eg. as the result of a FTOSI instruction). + s<2n> maps to the least significant half of d + s<2n+1> maps to the most significant half of d + */ + +typedef struct CPUARMState { + /* Regs for current mode. */ + uint32_t regs[16]; + /* Frequently accessed CPSR bits are stored separately for efficiently. + This contains all the other bits. Use cpsr_{read,write} to access + the whole CPSR. */ + uint32_t uncached_cpsr; + uint32_t spsr; + + /* Banked registers. */ + uint32_t banked_spsr[6]; + uint32_t banked_r13[6]; + uint32_t banked_r14[6]; + + /* These hold r8-r12. */ + uint32_t usr_regs[5]; + uint32_t fiq_regs[5]; + + /* cpsr flag cache for faster execution */ + uint32_t CF; /* 0 or 1 */ + uint32_t VF; /* V is the bit 31. All other bits are undefined */ + uint32_t NF; /* N is bit 31. All other bits are undefined. */ + uint32_t ZF; /* Z set if zero. */ + uint32_t QF; /* 0 or 1 */ + uint32_t GE; /* cpsr[19:16] */ + uint32_t thumb; /* cpsr[5]. 0 = arm mode, 1 = thumb mode. */ + uint32_t condexec_bits; /* IT bits. cpsr[15:10,26:25]. */ + + /* System control coprocessor (cp15) */ + struct { + uint32_t c0_cpuid; + uint32_t c0_cachetype; + uint32_t c0_ccsid[16]; /* Cache size. */ + uint32_t c0_clid; /* Cache level. */ + uint32_t c0_cssel; /* Cache size selection. */ + uint32_t c0_c1[8]; /* Feature registers. */ + uint32_t c0_c2[8]; /* Instruction set registers. */ + uint32_t c1_sys; /* System control register. */ + uint32_t c1_coproc; /* Coprocessor access register. */ + uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */ + uint32_t c2_base0; /* MMU translation table base 0. */ + uint32_t c2_base1; /* MMU translation table base 1. */ + uint32_t c2_control; /* MMU translation table base control. */ + uint32_t c2_mask; /* MMU translation table base selection mask. */ + uint32_t c2_base_mask; /* MMU translation table base 0 mask. */ + uint32_t c2_data; /* MPU data cachable bits. */ + uint32_t c2_insn; /* MPU instruction cachable bits. */ + uint32_t c3; /* MMU domain access control register + MPU write buffer control. */ + uint32_t c5_insn; /* Fault status registers. */ + uint32_t c5_data; + uint32_t c6_region[8]; /* MPU base/size registers. */ + uint32_t c6_insn; /* Fault address registers. */ + uint32_t c6_data; + uint32_t c9_insn; /* Cache lockdown registers. */ + uint32_t c9_data; + uint32_t c12_vbar; /* Vector base address. */ + uint32_t c13_fcse; /* FCSE PID. */ + uint32_t c13_context; /* Context ID. */ + uint32_t c13_tls1; /* User RW Thread register. */ + uint32_t c13_tls2; /* User RO Thread register. */ + uint32_t c13_tls3; /* Privileged Thread register. */ + uint32_t c15_cpar; /* XScale Coprocessor Access Register */ + uint32_t c15_ticonfig; /* TI925T configuration byte. */ + uint32_t c15_i_max; /* Maximum D-cache dirty line index. */ + uint32_t c15_i_min; /* Minimum D-cache dirty line index. */ + uint32_t c15_threadid; /* TI debugger thread-ID. */ + } cp15; + + struct { + uint32_t other_sp; + uint32_t vecbase; + uint32_t basepri; + uint32_t control; + int current_sp; + int exception; + int pending_exception; + void *nvic; + } v7m; + + /* Coprocessor IO used by peripherals */ + struct { + ARMReadCPFunc *cp_read; + ARMWriteCPFunc *cp_write; + void *opaque; + } cp[15]; + + /* Thumb-2 EE state. */ + uint32_t teecr; + uint32_t teehbr; + + /* Internal CPU feature flags. */ + uint32_t features; + + /* Callback for vectored interrupt controller. */ + int (*get_irq_vector)(struct CPUARMState *); + void *irq_opaque; + + /* VFP coprocessor state. */ + struct { + float64 regs[32]; + + uint32_t xregs[16]; + /* We store these fpcsr fields separately for convenience. */ + int vec_len; + int vec_stride; + + /* scratch space when Tn are not sufficient. */ + uint32_t scratch[8]; + + float_status fp_status; + } vfp; +#if defined(CONFIG_USER_ONLY) + struct mmon_state *mmon_entry; +#else + uint32_t mmon_addr; +#endif + + /* iwMMXt coprocessor state. */ + struct { + uint64_t regs[16]; + uint64_t val; + + uint32_t cregs[16]; + } iwmmxt; + + /* For mixed endian mode. */ + int bswap_code; + +#if defined(CONFIG_USER_ONLY) + /* For usermode syscall translation. */ + int eabi; +#endif + + CPU_COMMON + + /* These fields after the common ones so they are preserved on reset. */ + struct arm_boot_info *boot_info; +} CPUARMState; + +CPUARMState *cpu_arm_init(const char *cpu_model, void *dev); +void arm_cpu_reset_dev(CPUARMState *env); +void arm_translate_init(void); +int cpu_arm_exec(CPUARMState *s); +void cpu_arm_close(CPUARMState *s); +void do_interrupt(CPUARMState *); +void switch_mode(CPUARMState *, int); +uint32_t do_arm_semihosting(CPUARMState *env); + +/* 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. */ +int cpu_arm_signal_handler(int host_signum, void *pinfo, + void *puc); + +void cpu_lock(void); +void cpu_unlock(void); +static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls) +{ + env->cp15.c13_tls2 = newtls; +} + +#define CPSR_M (0x1f) +#define CPSR_T (1 << 5) +#define CPSR_F (1 << 6) +#define CPSR_I (1 << 7) +#define CPSR_A (1 << 8) +#define CPSR_E (1 << 9) +#define CPSR_IT_2_7 (0xfc00) +#define CPSR_GE (0xf << 16) +#define CPSR_RESERVED (0xf << 20) +#define CPSR_J (1 << 24) +#define CPSR_IT_0_1 (3 << 25) +#define CPSR_Q (1 << 27) +#define CPSR_V (1 << 28) +#define CPSR_C (1 << 29) +#define CPSR_Z (1 << 30) +#define CPSR_N (1 << 31) +#define CPSR_NZCV (CPSR_N | CPSR_Z | CPSR_C | CPSR_V) + +#define CPSR_IT (CPSR_IT_0_1 | CPSR_IT_2_7) +#define CACHED_CPSR_BITS (CPSR_T | CPSR_GE | CPSR_IT | CPSR_Q | CPSR_NZCV) +/* Bits writable in user mode. */ +#define CPSR_USER (CPSR_NZCV | CPSR_Q | CPSR_GE) +/* Execution state bits. MRS read as zero, MSR writes ignored. */ +#define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J) + +/* Return the current CPSR value. */ +uint32_t cpsr_read(CPUARMState *env); +/* Set the CPSR. Note that some bits of mask must be all-set or all-clear. */ +void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask); + +/* Return the current xPSR value. */ +static inline uint32_t xpsr_read(CPUARMState *env) +{ + int ZF; + ZF = (env->ZF == 0); + return (env->NF & 0x80000000) | (ZF << 30) + | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) + | (env->thumb << 24) | ((env->condexec_bits & 3) << 25) + | ((env->condexec_bits & 0xfc) << 8) + | env->v7m.exception; +} + +/* Set the xPSR. Note that some bits of mask must be all-set or all-clear. */ +static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) +{ + if (mask & CPSR_NZCV) { + env->ZF = (~val) & CPSR_Z; + env->NF = val; + env->CF = (val >> 29) & 1; + env->VF = (val << 3) & 0x80000000; + } + if (mask & CPSR_Q) + env->QF = ((val & CPSR_Q) != 0); + if (mask & (1 << 24)) + env->thumb = ((val & (1 << 24)) != 0); + if (mask & CPSR_IT_0_1) { + env->condexec_bits &= ~3; + env->condexec_bits |= (val >> 25) & 3; + } + if (mask & CPSR_IT_2_7) { + env->condexec_bits &= 3; + env->condexec_bits |= (val >> 8) & 0xfc; + } + if (mask & 0x1ff) { + env->v7m.exception = val & 0x1ff; + } +} + +enum arm_cpu_mode { + ARM_CPU_MODE_USR = 0x10, + ARM_CPU_MODE_FIQ = 0x11, + ARM_CPU_MODE_IRQ = 0x12, + ARM_CPU_MODE_SVC = 0x13, + ARM_CPU_MODE_ABT = 0x17, + ARM_CPU_MODE_UND = 0x1b, + ARM_CPU_MODE_SYS = 0x1f +}; + +/* VFP system registers. */ +#define ARM_VFP_FPSID 0 +#define ARM_VFP_FPSCR 1 +#define ARM_VFP_MVFR1 6 +#define ARM_VFP_MVFR0 7 +#define ARM_VFP_FPEXC 8 +#define ARM_VFP_FPINST 9 +#define ARM_VFP_FPINST2 10 + +/* iwMMXt coprocessor control registers. */ +#define ARM_IWMMXT_wCID 0 +#define ARM_IWMMXT_wCon 1 +#define ARM_IWMMXT_wCSSF 2 +#define ARM_IWMMXT_wCASF 3 +#define ARM_IWMMXT_wCGR0 8 +#define ARM_IWMMXT_wCGR1 9 +#define ARM_IWMMXT_wCGR2 10 +#define ARM_IWMMXT_wCGR3 11 + +enum arm_features { + ARM_FEATURE_VFP, + ARM_FEATURE_AUXCR, /* ARM1026 Auxiliary control register. */ + ARM_FEATURE_XSCALE, /* Intel XScale extensions. */ + ARM_FEATURE_IWMMXT, /* Intel iwMMXt extension. */ + ARM_FEATURE_V6, + ARM_FEATURE_V6K, + ARM_FEATURE_V7, + ARM_FEATURE_THUMB2, + ARM_FEATURE_MPU, /* Only has Memory Protection Unit, not full MMU. */ + ARM_FEATURE_VFP3, + ARM_FEATURE_NEON, + ARM_FEATURE_DIV, + ARM_FEATURE_M, /* Microcontroller profile. */ + ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling. */ + ARM_FEATURE_THUMB2EE, + ARM_FEATURE_FP16 +}; + +static inline int arm_feature(CPUARMState *env, int feature) +{ + return (env->features & (1u << feature)) != 0; +} + +void arm_cpu_list(FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...)); + +/* Interface between CPU and Interrupt controller. */ +void armv7m_nvic_set_pending(void *opaque, int irq); +int armv7m_nvic_acknowledge_irq(void *opaque); +void armv7m_nvic_complete_irq(void *opaque, int irq); + +void cpu_arm_set_cp_io(CPUARMState *env, int cpnum, + ARMReadCPFunc *cp_read, ARMWriteCPFunc *cp_write, + void *opaque); + +/* Does the core conform to the the "MicroController" profile. e.g. Cortex-M3. + Note the M in older cores (eg. ARM7TDMI) stands for Multiply. These are + conventional cores (ie. Application or Realtime profile). */ + +#define IS_M(env) arm_feature(env, ARM_FEATURE_M) +#define ARM_CPUID(env) (env->cp15.c0_cpuid) + +#define ARM_CPUID_ARM1026 0x4106a262 +#define ARM_CPUID_ARM926 0x41069265 +#define ARM_CPUID_ARM946 0x41059461 +#define ARM_CPUID_TI915T 0x54029152 +#define ARM_CPUID_TI925T 0x54029252 +#define ARM_CPUID_PXA250 0x69052100 +#define ARM_CPUID_PXA255 0x69052d00 +#define ARM_CPUID_PXA260 0x69052903 +#define ARM_CPUID_PXA261 0x69052d05 +#define ARM_CPUID_PXA262 0x69052d06 +#define ARM_CPUID_PXA270 0x69054110 +#define ARM_CPUID_PXA270_A0 0x69054110 +#define ARM_CPUID_PXA270_A1 0x69054111 +#define ARM_CPUID_PXA270_B0 0x69054112 +#define ARM_CPUID_PXA270_B1 0x69054113 +#define ARM_CPUID_PXA270_C0 0x69054114 +#define ARM_CPUID_PXA270_C5 0x69054117 +#define ARM_CPUID_ARM1136 0x4117b363 +#define ARM_CPUID_ARM1136_R2 0x4107b362 +#define ARM_CPUID_ARM11MPCORE 0x410fb022 +#define ARM_CPUID_CORTEXA8 0x410fc080 +#define ARM_CPUID_CORTEXM3 0x410fc231 +#define ARM_CPUID_ANY 0xffffffff + +#if defined(CONFIG_USER_ONLY) +#define TARGET_PAGE_BITS 12 +#else +/* The ARM MMU allows 1k pages. */ +/* ??? Linux doesn't actually use these, and they're deprecated in recent + architecture revisions. Maybe a configure option to disable them. */ +#define TARGET_PAGE_BITS 10 +#endif + +#define CPUState CPUARMState +#define cpu_init(env) cpu_arm_init(env, NULL) +#define cpu_exec cpu_arm_exec +#define cpu_gen_code cpu_arm_gen_code +#define cpu_signal_handler cpu_arm_signal_handler +#define cpu_list arm_cpu_list + +#define CPU_SAVE_VERSION 1 + +/* MMU modes definitions */ +#define MMU_MODE0_SUFFIX _kernel +#define MMU_MODE1_SUFFIX _user +#define MMU_USER_IDX 1 +static inline int cpu_mmu_index (CPUState *env) +{ + return (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR ? 1 : 0; +} + +#if defined(CONFIG_USER_ONLY) +static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) +{ + if (newsp) + env->regs[13] = newsp; + env->regs[0] = 0; +} +#endif + +#include "cpu-all.h" +#include "exec-all.h" + +static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb) +{ + env->regs[15] = tb->pc; +} + +static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, + target_ulong *cs_base, int *flags) +{ + *pc = env->regs[15]; + *cs_base = 0; + *flags = env->thumb | (env->vfp.vec_len << 1) + | (env->vfp.vec_stride << 4) | (env->condexec_bits << 8); + if ((env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) + *flags |= (1 << 6); + if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) + *flags |= (1 << 7); +} + +#endif