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Annotation of cf/ppc32_jit.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Cisco router simulation platform.
        !             3:  * Copyright (c) 2005,2006 Christophe Fillot ([email protected])
        !             4:  *
        !             5:  * PPC32 JIT compiler.
        !             6:  */
        !             7: 
        !             8: #ifndef __PPC32_JIT_H__
        !             9: #define __PPC32_JIT_H__
        !            10: 
        !            11: #include "utils.h"
        !            12: 
        !            13: /* Size of executable page area (in Mb) */
        !            14: #ifndef __CYGWIN__
        !            15: #define PPC_EXEC_AREA_SIZE  64
        !            16: #else
        !            17: #define PPC_EXEC_AREA_SIZE  16
        !            18: #endif
        !            19: 
        !            20: /* Buffer size for JIT code generation */
        !            21: #define PPC_JIT_BUFSIZE     32768
        !            22: 
        !            23: /* Maximum number of X86 chunks */
        !            24: #define PPC_JIT_MAX_CHUNKS  32
        !            25: 
        !            26: /* Instruction jump patch */
        !            27: struct ppc32_insn_patch {
        !            28:    u_char *jit_insn;
        !            29:    m_uint64_t ppc_ia;
        !            30: };
        !            31: 
        !            32: /* Instruction patch table */
        !            33: #define PPC32_INSN_PATCH_TABLE_SIZE  32
        !            34: 
        !            35: struct ppc32_jit_patch_table {
        !            36:    struct ppc32_insn_patch patches[PPC32_INSN_PATCH_TABLE_SIZE];
        !            37:    u_int cur_patch;
        !            38:    struct ppc32_jit_patch_table *next;
        !            39: };
        !            40: 
        !            41: /* PPC32 translated code block */
        !            42: struct ppc32_jit_tcb {
        !            43:    m_uint32_t start_ia;
        !            44:    u_char **jit_insn_ptr;
        !            45:    m_uint64_t acc_count;
        !            46:    m_uint32_t phys_page;
        !            47:    ppc_insn_t *ppc_code;
        !            48:    u_int ppc_trans_pos;
        !            49:    u_int jit_chunk_pos;
        !            50:    u_char *jit_ptr;
        !            51:    insn_exec_page_t *jit_buffer;
        !            52:    insn_exec_page_t *jit_chunks[PPC_JIT_MAX_CHUNKS];
        !            53:    struct ppc32_jit_patch_table *patch_table;
        !            54:    ppc32_jit_tcb_t *prev,*next;
        !            55: #if DEBUG_BLOCK_TIMESTAMP
        !            56:    m_uint64_t tm_first_use,tm_last_use;
        !            57: #endif
        !            58: };
        !            59: 
        !            60: /* PPC instruction recognition */
        !            61: struct ppc32_insn_tag {
        !            62:    int (*emit)(cpu_ppc_t *cpu,ppc32_jit_tcb_t *,ppc_insn_t);
        !            63:    m_uint32_t mask,value;
        !            64: };
        !            65: 
        !            66: /* Get the JIT instruction pointer in a translated block */
        !            67: static forced_inline 
        !            68: u_char *ppc32_jit_tcb_get_host_ptr(ppc32_jit_tcb_t *b,m_uint32_t vaddr)
        !            69: {
        !            70:    m_uint32_t offset;
        !            71: 
        !            72:    offset = (vaddr - b->start_ia) >> 2;
        !            73:    return(b->jit_insn_ptr[offset]);
        !            74: }
        !            75: 
        !            76: /* Initialize instruction lookup table */
        !            77: void ppc32_jit_create_ilt(void);
        !            78: 
        !            79: /* Initialize the JIT structure */
        !            80: int ppc32_jit_init(cpu_ppc_t *cpu);
        !            81: 
        !            82: /* Flush the JIT */
        !            83: u_int ppc32_jit_flush(cpu_ppc_t *cpu,u_int threshold);
        !            84: 
        !            85: /* Shutdown the JIT */
        !            86: void ppc32_jit_shutdown(cpu_ppc_t *cpu);
        !            87: 
        !            88: /* Fetch a PowerPC instruction and emit corresponding translated code */
        !            89: struct ppc32_insn_tag *ppc32_jit_fetch_and_emit(cpu_ppc_t *cpu,
        !            90:                                                 ppc32_jit_tcb_t *block);
        !            91: 
        !            92: /* Record a patch to apply in a compiled block */
        !            93: int ppc32_jit_tcb_record_patch(ppc32_jit_tcb_t *block,u_char *jit_ptr,
        !            94:                                m_uint32_t vaddr);
        !            95: 
        !            96: /* Free an instruction block */
        !            97: void ppc32_jit_tcb_free(cpu_ppc_t *cpu,ppc32_jit_tcb_t *block,
        !            98:                         int list_removal);
        !            99: 
        !           100: /* Check if the specified address belongs to the specified block */
        !           101: int ppc32_jit_tcb_local_addr(ppc32_jit_tcb_t *block,m_uint32_t vaddr,
        !           102:                              u_char **jit_addr);
        !           103: 
        !           104: /* Execute compiled PowerPC code */
        !           105: void *ppc32_jit_run_cpu(cpu_gen_t *gen);
        !           106: 
        !           107: #endif

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