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Annotation of qemu/target-arm/cpu.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * ARM virtual CPU header
        !             3:  * 
        !             4:  *  Copyright (c) 2003 Fabrice Bellard
        !             5:  *
        !             6:  * This library is free software; you can redistribute it and/or
        !             7:  * modify it under the terms of the GNU Lesser General Public
        !             8:  * License as published by the Free Software Foundation; either
        !             9:  * version 2 of the License, or (at your option) any later version.
        !            10:  *
        !            11:  * This library is distributed in the hope that it will be useful,
        !            12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            14:  * Lesser General Public License for more details.
        !            15:  *
        !            16:  * You should have received a copy of the GNU Lesser General Public
        !            17:  * License along with this library; if not, write to the Free Software
        !            18:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            19:  */
        !            20: #ifndef CPU_ARM_H
        !            21: #define CPU_ARM_H
        !            22: 
        !            23: #define TARGET_LONG_BITS 32
        !            24: 
        !            25: #include "cpu-defs.h"
        !            26: 
        !            27: #include "softfloat.h"
        !            28: 
        !            29: #define TARGET_HAS_ICE 1
        !            30: 
        !            31: #define EXCP_UDEF            1   /* undefined instruction */
        !            32: #define EXCP_SWI             2   /* software interrupt */
        !            33: #define EXCP_PREFETCH_ABORT  3
        !            34: #define EXCP_DATA_ABORT      4
        !            35: 
        !            36: /* We currently assume float and double are IEEE single and double
        !            37:    precision respectively.
        !            38:    Doing runtime conversions is tricky because VFP registers may contain
        !            39:    integer values (eg. as the result of a FTOSI instruction).
        !            40:    s<2n> maps to the least significant half of d<n>
        !            41:    s<2n+1> maps to the most significant half of d<n>
        !            42:  */
        !            43: 
        !            44: typedef struct CPUARMState {
        !            45:     uint32_t regs[16];
        !            46:     uint32_t cpsr;
        !            47:     
        !            48:     /* cpsr flag cache for faster execution */
        !            49:     uint32_t CF; /* 0 or 1 */
        !            50:     uint32_t VF; /* V is the bit 31. All other bits are undefined */
        !            51:     uint32_t NZF; /* N is bit 31. Z is computed from NZF */
        !            52:     uint32_t QF; /* 0 or 1 */
        !            53: 
        !            54:     int thumb; /* 0 = arm mode, 1 = thumb mode */
        !            55: 
        !            56:     /* coprocessor 15 (MMU) status */
        !            57:     uint32_t cp15_6;
        !            58:     
        !            59:     /* exception/interrupt handling */
        !            60:     jmp_buf jmp_env;
        !            61:     int exception_index;
        !            62:     int interrupt_request;
        !            63:     struct TranslationBlock *current_tb;
        !            64:     int user_mode_only;
        !            65:     uint32_t address;
        !            66: 
        !            67:     /* ICE debug support.  */
        !            68:     target_ulong breakpoints[MAX_BREAKPOINTS];
        !            69:     int nb_breakpoints;
        !            70:     int singlestep_enabled;
        !            71: 
        !            72:     /* in order to avoid passing too many arguments to the memory
        !            73:        write helpers, we store some rarely used information in the CPU
        !            74:        context) */
        !            75:     unsigned long mem_write_pc; /* host pc at which the memory was
        !            76:                                    written */
        !            77:     unsigned long mem_write_vaddr; /* target virtual addr at which the
        !            78:                                       memory was written */
        !            79:     /* VFP coprocessor state.  */
        !            80:     struct {
        !            81:         float64 regs[16];
        !            82: 
        !            83:         /* We store these fpcsr fields separately for convenience.  */
        !            84:         int vec_len;
        !            85:         int vec_stride;
        !            86: 
        !            87:         uint32_t fpscr;
        !            88: 
        !            89:         /* Temporary variables if we don't have spare fp regs.  */
        !            90:         float32 tmp0s, tmp1s;
        !            91:         float64 tmp0d, tmp1d;
        !            92:         
        !            93:         float_status fp_status;
        !            94:     } vfp;
        !            95: 
        !            96:     /* user data */
        !            97:     void *opaque;
        !            98: } CPUARMState;
        !            99: 
        !           100: CPUARMState *cpu_arm_init(void);
        !           101: int cpu_arm_exec(CPUARMState *s);
        !           102: void cpu_arm_close(CPUARMState *s);
        !           103: /* you can call this signal handler from your SIGBUS and SIGSEGV
        !           104:    signal handlers to inform the virtual CPU of exceptions. non zero
        !           105:    is returned if the signal was handled by the virtual CPU.  */
        !           106: struct siginfo;
        !           107: int cpu_arm_signal_handler(int host_signum, struct siginfo *info, 
        !           108:                            void *puc);
        !           109: 
        !           110: #define TARGET_PAGE_BITS 12
        !           111: #include "cpu-all.h"
        !           112: 
        !           113: #endif

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