mips.h

PL/0源码

//////////////////////////////////////////////////////////////////////////////
//
//  mips.[h,cc] -- procedures for generating MIPS code
//
//  see also prologue.h; it's quite machine-dependent!
//

#ifndef MIPS_H
#define MIPS_H

#include "inpbuf.h"
#include "codegen.h"

enum mips_opcode_t {
    // Real Instructions
    M_JAL = 1,  M_JALR, M_J,    M_JR,   M_MFLO,
    M_LI,       M_MOVE, M_BEQ,  M_BNE,  M_SEQ,
    M_SNE,      M_SLE,  M_SLT,  M_SGE,  M_SGT,
    M_SUB,      M_ADD,  M_MULT, M_DIV,  M_LW,
    M_SW,       M_ADDI, M_ANDI, M_XORI, M_LA,
    M_B,
    // Pseudo Instructions
    M_DATA=90,  M_TEXT, M_WORD, M_ENT,  M_END,
    M_FILE
};

typedef enum  { T_SPIM, T_SGI } target_t;

extern bool        generate_comments;
extern bool        generate_debug_code;
extern bool        g_peep_hole_optimize;
extern target_t    compiler_target;

void mips_src_lines(location_t sl);
//  Output source lines up to sl

void mips_src_finalize(void);
//  Print remaining lines

void mips_cm(string comment);
//  Add a comment to the next opcode which is processed by mips_op

//////////////////////////////////////////////////////////////////////////////
//
//  mips_op: Generate a MIPS operation instruction.
//
//  This one function is overloaded to generate every class of instruction
//  used.
//

void mips_op(const mips_opcode_t op, const mips_name_t label);
void mips_op(const mips_opcode_t op, const mips_register_t r1);
void mips_op(const mips_opcode_t op, const mips_register_t r1,
             const mips_name_t lab);
void mips_op(const mips_opcode_t op, const mips_register_t r1,
             const mips_register_t r2);
void mips_op(const mips_opcode_t op, const mips_register_t r1,
             const mips_register_t r2, const mips_name_t lab);
void mips_op(const mips_opcode_t op, const mips_register_t r1,
             const mips_register_t r2, const mips_register_t r3);
void mips_op(const mips_opcode_t op, const mips_register_t r1,
             const mips_register_t r2, const int imm);
void mips_op(const mips_opcode_t op, const mips_register_t r1,
             const int imm, const mips_register_t r2);
void mips_op(const mips_opcode_t op, const mips_register_t reg,
             const int imm);
void mips_op(const mips_name_t lab);
void mips_op(const mips_opcode_t op);
void mips_op(const mips_name_t label, const mips_opcode_t op,
             const int value);

#endif