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Diffstat (limited to 'target-arm/cpu.h')
| -rw-r--r-- | target-arm/cpu.h | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/target-arm/cpu.h b/target-arm/cpu.h deleted file mode 100644 index ff765f7..0000000 --- a/target-arm/cpu.h +++ /dev/null @@ -1,420 +0,0 @@ -/* - * 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<n> - s<2n+1> maps to the most significant half of d<n> - */ - -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_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_mask; /* MMU translation table base 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 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]; - - /* 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; - -#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 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. */ -}; - -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 cpu_arm_init -#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 - -#define CPU_PC_FROM_TB(env, tb) env->regs[15] = tb->pc - -#include "cpu-all.h" - -#endif |