forked from KolibriOS/kolibrios
1432 lines
43 KiB
C
1432 lines
43 KiB
C
/* ======================================================================== */
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/* ========================= LICENSING & COPYRIGHT ======================== */
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/* ======================================================================== */
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/*
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* MUSASHI
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* Version 3.31
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*
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* A portable Motorola M680x0 processor emulation engine.
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* Copyright 1998-2007 Karl Stenerud. All rights reserved.
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*
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* This code may be freely used for non-commercial purposes as long as this
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* copyright notice remains unaltered in the source code and any binary files
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* containing this code in compiled form.
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*
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* All other lisencing terms must be negotiated with the author
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* (Karl Stenerud).
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*
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* The latest version of this code can be obtained at:
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* http://kstenerud.cjb.net
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*/
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/*
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* Modified For OpenVMS By: Robert Alan Byer
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* byer@mail.ourservers.net
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*/
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/* ======================================================================== */
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/* ============================ CODE GENERATOR ============================ */
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/* ======================================================================== */
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/*
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* This is the code generator program which will generate the opcode table
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* and the final opcode handlers.
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*
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* It requires an input file to function (default m68k_in.c), but you can
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* specify your own like so:
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*
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* m68kmake <output path> <input file>
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*
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* where output path is the path where the output files should be placed, and
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* input file is the file to use for input.
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*
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* If you modify the input file greatly from its released form, you may have
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* to tweak the configuration section a bit since I'm using static allocation
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* to keep things simple.
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*
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*
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* TODO: - build a better code generator for the move instruction.
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* - Add callm and rtm instructions
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* - Fix RTE to handle other format words
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* - Add address error (and bus error?) handling
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*/
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static const char* g_version = "3.31";
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/* ======================================================================== */
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/* =============================== INCLUDES =============================== */
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/* ======================================================================== */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdarg.h>
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/* ======================================================================== */
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/* ============================= CONFIGURATION ============================ */
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/* ======================================================================== */
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#define M68K_MAX_PATH 1024
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#define M68K_MAX_DIR 1024
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#define MAX_LINE_LENGTH 200 /* length of 1 line */
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#define MAX_BODY_LENGTH 300 /* Number of lines in 1 function */
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#define MAX_REPLACE_LENGTH 30 /* Max number of replace strings */
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#define MAX_INSERT_LENGTH 5000 /* Max size of insert piece */
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#define MAX_NAME_LENGTH 30 /* Max length of ophandler name */
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#define MAX_SPEC_PROC_LENGTH 4 /* Max length of special processing str */
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#define MAX_SPEC_EA_LENGTH 5 /* Max length of specified EA str */
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#define EA_ALLOWED_LENGTH 11 /* Max length of ea allowed str */
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#define MAX_OPCODE_INPUT_TABLE_LENGTH 1000 /* Max length of opcode handler tbl */
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#define MAX_OPCODE_OUTPUT_TABLE_LENGTH 3000 /* Max length of opcode handler tbl */
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/* Default filenames */
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#define FILENAME_INPUT "m68k_in.c"
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#define FILENAME_PROTOTYPE "m68kops.h"
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#define FILENAME_TABLE "m68kops.c"
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/* Identifier sequences recognized by this program */
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#define ID_INPUT_SEPARATOR "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
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#define ID_BASE "M68KMAKE"
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#define ID_PROTOTYPE_HEADER ID_BASE "_PROTOTYPE_HEADER"
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#define ID_PROTOTYPE_FOOTER ID_BASE "_PROTOTYPE_FOOTER"
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#define ID_TABLE_HEADER ID_BASE "_TABLE_HEADER"
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#define ID_TABLE_FOOTER ID_BASE "_TABLE_FOOTER"
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#define ID_TABLE_BODY ID_BASE "_TABLE_BODY"
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#define ID_TABLE_START ID_BASE "_TABLE_START"
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#define ID_OPHANDLER_HEADER ID_BASE "_OPCODE_HANDLER_HEADER"
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#define ID_OPHANDLER_FOOTER ID_BASE "_OPCODE_HANDLER_FOOTER"
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#define ID_OPHANDLER_BODY ID_BASE "_OPCODE_HANDLER_BODY"
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#define ID_END ID_BASE "_END"
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#define ID_OPHANDLER_NAME ID_BASE "_OP"
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#define ID_OPHANDLER_EA_AY_8 ID_BASE "_GET_EA_AY_8"
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#define ID_OPHANDLER_EA_AY_16 ID_BASE "_GET_EA_AY_16"
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#define ID_OPHANDLER_EA_AY_32 ID_BASE "_GET_EA_AY_32"
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#define ID_OPHANDLER_OPER_AY_8 ID_BASE "_GET_OPER_AY_8"
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#define ID_OPHANDLER_OPER_AY_16 ID_BASE "_GET_OPER_AY_16"
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#define ID_OPHANDLER_OPER_AY_32 ID_BASE "_GET_OPER_AY_32"
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#define ID_OPHANDLER_CC ID_BASE "_CC"
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#define ID_OPHANDLER_NOT_CC ID_BASE "_NOT_CC"
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#ifndef DECL_SPEC
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#define DECL_SPEC
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#endif /* DECL_SPEC */
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/* ======================================================================== */
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/* ============================== PROTOTYPES ============================== */
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/* ======================================================================== */
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enum {
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CPU_TYPE_000 = 0,
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CPU_TYPE_010,
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CPU_TYPE_020,
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CPU_TYPE_040,
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NUM_CPUS
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};
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#define UNSPECIFIED "."
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#define UNSPECIFIED_CH '.'
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#define HAS_NO_EA_MODE(A) (strcmp(A, "..........") == 0)
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#define HAS_EA_AI(A) ((A)[0] == 'A')
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#define HAS_EA_PI(A) ((A)[1] == '+')
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#define HAS_EA_PD(A) ((A)[2] == '-')
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#define HAS_EA_DI(A) ((A)[3] == 'D')
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#define HAS_EA_IX(A) ((A)[4] == 'X')
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#define HAS_EA_AW(A) ((A)[5] == 'W')
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#define HAS_EA_AL(A) ((A)[6] == 'L')
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#define HAS_EA_PCDI(A) ((A)[7] == 'd')
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#define HAS_EA_PCIX(A) ((A)[8] == 'x')
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#define HAS_EA_I(A) ((A)[9] == 'I')
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enum
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{
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EA_MODE_NONE, /* No special addressing mode */
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EA_MODE_AI, /* Address register indirect */
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EA_MODE_PI, /* Address register indirect with postincrement */
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EA_MODE_PI7, /* Address register 7 indirect with postincrement */
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EA_MODE_PD, /* Address register indirect with predecrement */
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EA_MODE_PD7, /* Address register 7 indirect with predecrement */
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EA_MODE_DI, /* Address register indirect with displacement */
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EA_MODE_IX, /* Address register indirect with index */
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EA_MODE_AW, /* Absolute word */
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EA_MODE_AL, /* Absolute long */
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EA_MODE_PCDI, /* Program counter indirect with displacement */
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EA_MODE_PCIX, /* Program counter indirect with index */
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EA_MODE_I /* Immediate */
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};
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/* Everything we need to know about an opcode */
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typedef struct
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{
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char name[MAX_NAME_LENGTH]; /* opcode handler name */
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unsigned char size; /* Size of operation */
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char spec_proc[MAX_SPEC_PROC_LENGTH]; /* Special processing mode */
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char spec_ea[MAX_SPEC_EA_LENGTH]; /* Specified effective addressing mode */
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unsigned char bits; /* Number of significant bits (used for sorting the table) */
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unsigned short op_mask; /* Mask to apply for matching an opcode to a handler */
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unsigned short op_match; /* Value to match after masking */
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char ea_allowed[EA_ALLOWED_LENGTH]; /* Effective addressing modes allowed */
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char cpu_mode[NUM_CPUS]; /* User or supervisor mode */
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char cpus[NUM_CPUS+1]; /* Allowed CPUs */
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unsigned char cycles[NUM_CPUS]; /* cycles for 000, 010, 020 */
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} opcode_struct;
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/* All modifications necessary for a specific EA mode of an instruction */
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typedef struct
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{
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const char* fname_add;
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const char* ea_add;
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unsigned int mask_add;
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unsigned int match_add;
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} ea_info_struct;
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/* Holds the body of a function */
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typedef struct
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{
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char body[MAX_BODY_LENGTH][MAX_LINE_LENGTH+1];
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int length;
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} body_struct;
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/* Holds a sequence of search / replace strings */
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typedef struct
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{
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char replace[MAX_REPLACE_LENGTH][2][MAX_LINE_LENGTH+1];
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int length;
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} replace_struct;
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/* Function Prototypes */
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void error_exit(const char* fmt, ...);
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void perror_exit(const char* fmt, ...);
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int check_strsncpy(char* dst, char* src, int maxlength);
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int check_atoi(char* str, int *result);
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int skip_spaces(char* str);
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int num_bits(int value);
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int atoh(char* buff);
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int fgetline(char* buff, int nchars, FILE* file);
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int get_oper_cycles(opcode_struct* op, int ea_mode, int cpu_type);
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opcode_struct* find_opcode(char* name, int size, char* spec_proc, char* spec_ea);
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opcode_struct* find_illegal_opcode(void);
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int extract_opcode_info(char* src, char* name, int* size, char* spec_proc, char* spec_ea);
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void add_replace_string(replace_struct* replace, const char* search_str, const char* replace_str);
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void write_body(FILE* filep, body_struct* body, replace_struct* replace);
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void get_base_name(char* base_name, opcode_struct* op);
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void write_prototype(FILE* filep, char* base_name);
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void write_function_name(FILE* filep, char* base_name);
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void add_opcode_output_table_entry(opcode_struct* op, char* name);
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static int DECL_SPEC compare_nof_true_bits(const void* aptr, const void* bptr);
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void print_opcode_output_table(FILE* filep);
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void write_table_entry(FILE* filep, opcode_struct* op);
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void set_opcode_struct(opcode_struct* src, opcode_struct* dst, int ea_mode);
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void generate_opcode_handler(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* opinfo, int ea_mode);
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void generate_opcode_ea_variants(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* op);
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void generate_opcode_cc_variants(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* op_in, int offset);
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void process_opcode_handlers(FILE* filep);
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void populate_table(void);
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void read_insert(char* insert);
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/* ======================================================================== */
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/* ================================= DATA ================================= */
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/* ======================================================================== */
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/* Name of the input file */
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char g_input_filename[M68K_MAX_PATH] = FILENAME_INPUT;
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/* File handles */
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FILE* g_input_file = NULL;
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FILE* g_prototype_file = NULL;
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FILE* g_table_file = NULL;
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int g_num_functions = 0; /* Number of functions processed */
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int g_num_primitives = 0; /* Number of function primitives read */
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int g_line_number = 1; /* Current line number */
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/* Opcode handler table */
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opcode_struct g_opcode_input_table[MAX_OPCODE_INPUT_TABLE_LENGTH];
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opcode_struct g_opcode_output_table[MAX_OPCODE_OUTPUT_TABLE_LENGTH];
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int g_opcode_output_table_length = 0;
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ea_info_struct g_ea_info_table[13] =
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{/* fname ea mask match */
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{"", "", 0x00, 0x00}, /* EA_MODE_NONE */
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{"ai", "AY_AI", 0x38, 0x10}, /* EA_MODE_AI */
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{"pi", "AY_PI", 0x38, 0x18}, /* EA_MODE_PI */
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{"pi7", "A7_PI", 0x3f, 0x1f}, /* EA_MODE_PI7 */
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{"pd", "AY_PD", 0x38, 0x20}, /* EA_MODE_PD */
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{"pd7", "A7_PD", 0x3f, 0x27}, /* EA_MODE_PD7 */
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{"di", "AY_DI", 0x38, 0x28}, /* EA_MODE_DI */
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{"ix", "AY_IX", 0x38, 0x30}, /* EA_MODE_IX */
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{"aw", "AW", 0x3f, 0x38}, /* EA_MODE_AW */
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{"al", "AL", 0x3f, 0x39}, /* EA_MODE_AL */
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{"pcdi", "PCDI", 0x3f, 0x3a}, /* EA_MODE_PCDI */
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{"pcix", "PCIX", 0x3f, 0x3b}, /* EA_MODE_PCIX */
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{"i", "I", 0x3f, 0x3c}, /* EA_MODE_I */
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};
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const char* g_cc_table[16][2] =
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{
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{ "t", "T"}, /* 0000 */
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{ "f", "F"}, /* 0001 */
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{"hi", "HI"}, /* 0010 */
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{"ls", "LS"}, /* 0011 */
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{"cc", "CC"}, /* 0100 */
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{"cs", "CS"}, /* 0101 */
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{"ne", "NE"}, /* 0110 */
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{"eq", "EQ"}, /* 0111 */
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{"vc", "VC"}, /* 1000 */
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{"vs", "VS"}, /* 1001 */
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{"pl", "PL"}, /* 1010 */
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{"mi", "MI"}, /* 1011 */
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{"ge", "GE"}, /* 1100 */
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{"lt", "LT"}, /* 1101 */
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{"gt", "GT"}, /* 1110 */
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{"le", "LE"}, /* 1111 */
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};
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/* size to index translator (0 -> 0, 8 and 16 -> 1, 32 -> 2) */
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int g_size_select_table[33] =
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{
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0, /* unsized */
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0, 0, 0, 0, 0, 0, 0, 1, /* 8 */
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0, 0, 0, 0, 0, 0, 0, 1, /* 16 */
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 /* 32 */
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};
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/* Extra cycles required for certain EA modes */
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/* TODO: correct timings for 040 */
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int g_ea_cycle_table[13][NUM_CPUS][3] =
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{/* 000 010 020 040 */
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{{ 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}}, /* EA_MODE_NONE */
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{{ 0, 4, 8}, { 0, 4, 8}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_AI */
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{{ 0, 4, 8}, { 0, 4, 8}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_PI */
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{{ 0, 4, 8}, { 0, 4, 8}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_PI7 */
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{{ 0, 6, 10}, { 0, 6, 10}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_PD */
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{{ 0, 6, 10}, { 0, 6, 10}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_PD7 */
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{{ 0, 8, 12}, { 0, 8, 12}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_DI */
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{{ 0, 10, 14}, { 0, 10, 14}, { 0, 7, 7}, { 0, 7, 7}}, /* EA_MODE_IX */
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{{ 0, 8, 12}, { 0, 8, 12}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_AW */
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{{ 0, 12, 16}, { 0, 12, 16}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_AL */
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{{ 0, 8, 12}, { 0, 8, 12}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_PCDI */
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{{ 0, 10, 14}, { 0, 10, 14}, { 0, 7, 7}, { 0, 7, 7}}, /* EA_MODE_PCIX */
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{{ 0, 4, 8}, { 0, 4, 8}, { 0, 2, 4}, { 0, 2, 4}}, /* EA_MODE_I */
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};
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/* Extra cycles for JMP instruction (000, 010) */
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int g_jmp_cycle_table[13] =
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{
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0, /* EA_MODE_NONE */
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4, /* EA_MODE_AI */
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0, /* EA_MODE_PI */
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0, /* EA_MODE_PI7 */
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0, /* EA_MODE_PD */
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0, /* EA_MODE_PD7 */
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6, /* EA_MODE_DI */
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10, /* EA_MODE_IX */
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6, /* EA_MODE_AW */
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8, /* EA_MODE_AL */
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6, /* EA_MODE_PCDI */
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10, /* EA_MODE_PCIX */
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0, /* EA_MODE_I */
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};
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/* Extra cycles for JSR instruction (000, 010) */
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int g_jsr_cycle_table[13] =
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{
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0, /* EA_MODE_NONE */
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4, /* EA_MODE_AI */
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0, /* EA_MODE_PI */
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0, /* EA_MODE_PI7 */
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0, /* EA_MODE_PD */
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0, /* EA_MODE_PD7 */
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6, /* EA_MODE_DI */
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10, /* EA_MODE_IX */
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6, /* EA_MODE_AW */
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8, /* EA_MODE_AL */
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6, /* EA_MODE_PCDI */
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10, /* EA_MODE_PCIX */
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0, /* EA_MODE_I */
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};
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/* Extra cycles for LEA instruction (000, 010) */
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int g_lea_cycle_table[13] =
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{
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0, /* EA_MODE_NONE */
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4, /* EA_MODE_AI */
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0, /* EA_MODE_PI */
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0, /* EA_MODE_PI7 */
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0, /* EA_MODE_PD */
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0, /* EA_MODE_PD7 */
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8, /* EA_MODE_DI */
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12, /* EA_MODE_IX */
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8, /* EA_MODE_AW */
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12, /* EA_MODE_AL */
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8, /* EA_MODE_PCDI */
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12, /* EA_MODE_PCIX */
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0, /* EA_MODE_I */
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};
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/* Extra cycles for PEA instruction (000, 010) */
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int g_pea_cycle_table[13] =
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{
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0, /* EA_MODE_NONE */
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6, /* EA_MODE_AI */
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0, /* EA_MODE_PI */
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0, /* EA_MODE_PI7 */
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0, /* EA_MODE_PD */
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0, /* EA_MODE_PD7 */
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10, /* EA_MODE_DI */
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14, /* EA_MODE_IX */
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10, /* EA_MODE_AW */
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14, /* EA_MODE_AL */
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10, /* EA_MODE_PCDI */
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14, /* EA_MODE_PCIX */
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0, /* EA_MODE_I */
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};
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/* Extra cycles for MOVEM instruction (000, 010) */
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int g_movem_cycle_table[13] =
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{
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0, /* EA_MODE_NONE */
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0, /* EA_MODE_AI */
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0, /* EA_MODE_PI */
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0, /* EA_MODE_PI7 */
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0, /* EA_MODE_PD */
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0, /* EA_MODE_PD7 */
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4, /* EA_MODE_DI */
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6, /* EA_MODE_IX */
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4, /* EA_MODE_AW */
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8, /* EA_MODE_AL */
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0, /* EA_MODE_PCDI */
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0, /* EA_MODE_PCIX */
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0, /* EA_MODE_I */
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};
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/* Extra cycles for MOVES instruction (010) */
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int g_moves_cycle_table[13][3] =
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{
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{ 0, 0, 0}, /* EA_MODE_NONE */
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{ 0, 4, 6}, /* EA_MODE_AI */
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{ 0, 4, 6}, /* EA_MODE_PI */
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{ 0, 4, 6}, /* EA_MODE_PI7 */
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{ 0, 6, 12}, /* EA_MODE_PD */
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{ 0, 6, 12}, /* EA_MODE_PD7 */
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{ 0, 12, 16}, /* EA_MODE_DI */
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{ 0, 16, 20}, /* EA_MODE_IX */
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{ 0, 12, 16}, /* EA_MODE_AW */
|
|
{ 0, 16, 20}, /* EA_MODE_AL */
|
|
{ 0, 0, 0}, /* EA_MODE_PCDI */
|
|
{ 0, 0, 0}, /* EA_MODE_PCIX */
|
|
{ 0, 0, 0}, /* EA_MODE_I */
|
|
};
|
|
|
|
/* Extra cycles for CLR instruction (010) */
|
|
int g_clr_cycle_table[13][3] =
|
|
{
|
|
{ 0, 0, 0}, /* EA_MODE_NONE */
|
|
{ 0, 4, 6}, /* EA_MODE_AI */
|
|
{ 0, 4, 6}, /* EA_MODE_PI */
|
|
{ 0, 4, 6}, /* EA_MODE_PI7 */
|
|
{ 0, 6, 8}, /* EA_MODE_PD */
|
|
{ 0, 6, 8}, /* EA_MODE_PD7 */
|
|
{ 0, 8, 10}, /* EA_MODE_DI */
|
|
{ 0, 10, 14}, /* EA_MODE_IX */
|
|
{ 0, 8, 10}, /* EA_MODE_AW */
|
|
{ 0, 10, 14}, /* EA_MODE_AL */
|
|
{ 0, 0, 0}, /* EA_MODE_PCDI */
|
|
{ 0, 0, 0}, /* EA_MODE_PCIX */
|
|
{ 0, 0, 0}, /* EA_MODE_I */
|
|
};
|
|
|
|
|
|
|
|
/* ======================================================================== */
|
|
/* =========================== UTILITY FUNCTIONS ========================== */
|
|
/* ======================================================================== */
|
|
|
|
/* Print an error message and exit with status error */
|
|
void error_exit(const char* fmt, ...)
|
|
{
|
|
va_list args;
|
|
fprintf(stderr, "In %s, near or on line %d:\n\t", g_input_filename, g_line_number);
|
|
va_start(args, fmt);
|
|
vfprintf(stderr, fmt, args);
|
|
va_end(args);
|
|
fprintf(stderr, "\n");
|
|
|
|
if(g_prototype_file) fclose(g_prototype_file);
|
|
if(g_table_file) fclose(g_table_file);
|
|
if(g_input_file) fclose(g_input_file);
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* Print an error message, call perror(), and exit with status error */
|
|
void perror_exit(const char* fmt, ...)
|
|
{
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
vfprintf(stderr, fmt, args);
|
|
va_end(args);
|
|
perror("");
|
|
|
|
if(g_prototype_file) fclose(g_prototype_file);
|
|
if(g_table_file) fclose(g_table_file);
|
|
if(g_input_file) fclose(g_input_file);
|
|
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
|
|
/* copy until 0 or space and exit with error if we read too far */
|
|
int check_strsncpy(char* dst, char* src, int maxlength)
|
|
{
|
|
char* p = dst;
|
|
while(*src && *src != ' ')
|
|
{
|
|
*p++ = *src++;
|
|
if(p - dst > maxlength)
|
|
error_exit("Field too long");
|
|
}
|
|
*p = 0;
|
|
return p - dst;
|
|
}
|
|
|
|
/* copy until 0 or specified character and exit with error if we read too far */
|
|
int check_strcncpy(char* dst, char* src, char delim, int maxlength)
|
|
{
|
|
char* p = dst;
|
|
while(*src && *src != delim)
|
|
{
|
|
*p++ = *src++;
|
|
if(p - dst > maxlength)
|
|
error_exit("Field too long");
|
|
}
|
|
*p = 0;
|
|
return p - dst;
|
|
}
|
|
|
|
/* convert ascii to integer and exit with error if we find invalid data */
|
|
int check_atoi(char* str, int *result)
|
|
{
|
|
int accum = 0;
|
|
char* p = str;
|
|
while(*p >= '0' && *p <= '9')
|
|
{
|
|
accum *= 10;
|
|
accum += *p++ - '0';
|
|
}
|
|
if(*p != ' ' && *p != 0)
|
|
error_exit("Malformed integer value (%c)", *p);
|
|
*result = accum;
|
|
return p - str;
|
|
}
|
|
|
|
/* Skip past spaces in a string */
|
|
int skip_spaces(char* str)
|
|
{
|
|
char* p = str;
|
|
|
|
while(*p == ' ')
|
|
p++;
|
|
|
|
return p - str;
|
|
}
|
|
|
|
/* Count the number of set bits in a value */
|
|
int num_bits(int value)
|
|
{
|
|
value = ((value & 0xaaaa) >> 1) + (value & 0x5555);
|
|
value = ((value & 0xcccc) >> 2) + (value & 0x3333);
|
|
value = ((value & 0xf0f0) >> 4) + (value & 0x0f0f);
|
|
value = ((value & 0xff00) >> 8) + (value & 0x00ff);
|
|
return value;
|
|
}
|
|
|
|
/* Convert a hex value written in ASCII */
|
|
int atoh(char* buff)
|
|
{
|
|
int accum = 0;
|
|
|
|
for(;;buff++)
|
|
{
|
|
if(*buff >= '0' && *buff <= '9')
|
|
{
|
|
accum <<= 4;
|
|
accum += *buff - '0';
|
|
}
|
|
else if(*buff >= 'a' && *buff <= 'f')
|
|
{
|
|
accum <<= 4;
|
|
accum += *buff - 'a' + 10;
|
|
}
|
|
else break;
|
|
}
|
|
return accum;
|
|
}
|
|
|
|
/* Get a line of text from a file, discarding any end-of-line characters */
|
|
int fgetline(char* buff, int nchars, FILE* file)
|
|
{
|
|
int length;
|
|
|
|
if(fgets(buff, nchars, file) == NULL)
|
|
return -1;
|
|
if(buff[0] == '\r')
|
|
memcpy(buff, buff + 1, nchars - 1);
|
|
|
|
length = strlen(buff);
|
|
while(length && (buff[length-1] == '\r' || buff[length-1] == '\n'))
|
|
length--;
|
|
buff[length] = 0;
|
|
g_line_number++;
|
|
|
|
return length;
|
|
}
|
|
|
|
|
|
|
|
/* ======================================================================== */
|
|
/* =========================== HELPER FUNCTIONS =========================== */
|
|
/* ======================================================================== */
|
|
|
|
/* Calculate the number of cycles an opcode requires */
|
|
int get_oper_cycles(opcode_struct* op, int ea_mode, int cpu_type)
|
|
{
|
|
int size = g_size_select_table[op->size];
|
|
|
|
if(op->cpus[cpu_type] == '.')
|
|
return 0;
|
|
|
|
if(cpu_type < CPU_TYPE_020)
|
|
{
|
|
if(cpu_type == CPU_TYPE_010)
|
|
{
|
|
if(strcmp(op->name, "moves") == 0)
|
|
return op->cycles[cpu_type] + g_moves_cycle_table[ea_mode][size];
|
|
if(strcmp(op->name, "clr") == 0)
|
|
return op->cycles[cpu_type] + g_clr_cycle_table[ea_mode][size];
|
|
}
|
|
|
|
/* ASG: added these cases -- immediate modes take 2 extra cycles here */
|
|
/* SV: but only when operating on long, and also on register direct mode */
|
|
if(cpu_type == CPU_TYPE_000 && (ea_mode == EA_MODE_I || ea_mode == EA_MODE_NONE) && op->size == 32 &&
|
|
((strcmp(op->name, "add") == 0 && strcmp(op->spec_proc, "er") == 0) ||
|
|
strcmp(op->name, "adda") == 0 ||
|
|
(strcmp(op->name, "and") == 0 && strcmp(op->spec_proc, "er") == 0) ||
|
|
(strcmp(op->name, "or") == 0 && strcmp(op->spec_proc, "er") == 0) ||
|
|
(strcmp(op->name, "sub") == 0 && strcmp(op->spec_proc, "er") == 0) ||
|
|
strcmp(op->name, "suba") == 0))
|
|
return op->cycles[cpu_type] + g_ea_cycle_table[ea_mode][cpu_type][size] + 2;
|
|
|
|
if(strcmp(op->name, "jmp") == 0)
|
|
return op->cycles[cpu_type] + g_jmp_cycle_table[ea_mode];
|
|
if(strcmp(op->name, "jsr") == 0)
|
|
return op->cycles[cpu_type] + g_jsr_cycle_table[ea_mode];
|
|
if(strcmp(op->name, "lea") == 0)
|
|
return op->cycles[cpu_type] + g_lea_cycle_table[ea_mode];
|
|
if(strcmp(op->name, "pea") == 0)
|
|
return op->cycles[cpu_type] + g_pea_cycle_table[ea_mode];
|
|
if(strcmp(op->name, "movem") == 0)
|
|
return op->cycles[cpu_type] + g_movem_cycle_table[ea_mode];
|
|
}
|
|
return op->cycles[cpu_type] + g_ea_cycle_table[ea_mode][cpu_type][size];
|
|
}
|
|
|
|
/* Find an opcode in the opcode handler list */
|
|
opcode_struct* find_opcode(char* name, int size, char* spec_proc, char* spec_ea)
|
|
{
|
|
opcode_struct* op;
|
|
|
|
|
|
for(op = g_opcode_input_table;op->name != NULL;op++)
|
|
{
|
|
if( strcmp(name, op->name) == 0 &&
|
|
(size == op->size) &&
|
|
strcmp(spec_proc, op->spec_proc) == 0 &&
|
|
strcmp(spec_ea, op->spec_ea) == 0)
|
|
return op;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Specifically find the illegal opcode in the list */
|
|
opcode_struct* find_illegal_opcode(void)
|
|
{
|
|
opcode_struct* op;
|
|
|
|
for(op = g_opcode_input_table;op->name != NULL;op++)
|
|
{
|
|
if(strcmp(op->name, "illegal") == 0)
|
|
return op;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Parse an opcode handler name */
|
|
int extract_opcode_info(char* src, char* name, int* size, char* spec_proc, char* spec_ea)
|
|
{
|
|
char* ptr = strstr(src, ID_OPHANDLER_NAME);
|
|
|
|
if(ptr == NULL)
|
|
return 0;
|
|
|
|
ptr += strlen(ID_OPHANDLER_NAME) + 1;
|
|
|
|
ptr += check_strcncpy(name, ptr, ',', MAX_NAME_LENGTH);
|
|
if(*ptr != ',') return 0;
|
|
ptr++;
|
|
ptr += skip_spaces(ptr);
|
|
|
|
*size = atoi(ptr);
|
|
ptr = strstr(ptr, ",");
|
|
if(ptr == NULL) return 0;
|
|
ptr++;
|
|
ptr += skip_spaces(ptr);
|
|
|
|
ptr += check_strcncpy(spec_proc, ptr, ',', MAX_SPEC_PROC_LENGTH);
|
|
if(*ptr != ',') return 0;
|
|
ptr++;
|
|
ptr += skip_spaces(ptr);
|
|
|
|
ptr += check_strcncpy(spec_ea, ptr, ')', MAX_SPEC_EA_LENGTH);
|
|
if(*ptr != ')') return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/* Add a search/replace pair to a replace structure */
|
|
void add_replace_string(replace_struct* replace, const char* search_str, const char* replace_str)
|
|
{
|
|
if(replace->length >= MAX_REPLACE_LENGTH)
|
|
error_exit("overflow in replace structure");
|
|
|
|
strcpy(replace->replace[replace->length][0], search_str);
|
|
strcpy(replace->replace[replace->length++][1], replace_str);
|
|
}
|
|
|
|
/* Write a function body while replacing any selected strings */
|
|
void write_body(FILE* filep, body_struct* body, replace_struct* replace)
|
|
{
|
|
int i;
|
|
int j;
|
|
char* ptr;
|
|
char output[MAX_LINE_LENGTH+1];
|
|
char temp_buff[MAX_LINE_LENGTH+1];
|
|
int found;
|
|
|
|
for(i=0;i<body->length;i++)
|
|
{
|
|
strcpy(output, body->body[i]);
|
|
/* Check for the base directive header */
|
|
if(strstr(output, ID_BASE) != NULL)
|
|
{
|
|
/* Search for any text we need to replace */
|
|
found = 0;
|
|
for(j=0;j<replace->length;j++)
|
|
{
|
|
ptr = strstr(output, replace->replace[j][0]);
|
|
if(ptr)
|
|
{
|
|
/* We found something to replace */
|
|
found = 1;
|
|
strcpy(temp_buff, ptr+strlen(replace->replace[j][0]));
|
|
strcpy(ptr, replace->replace[j][1]);
|
|
strcat(ptr, temp_buff);
|
|
}
|
|
}
|
|
/* Found a directive with no matching replace string */
|
|
if(!found)
|
|
error_exit("Unknown " ID_BASE " directive");
|
|
}
|
|
fprintf(filep, "%s\n", output);
|
|
}
|
|
fprintf(filep, "\n\n");
|
|
}
|
|
|
|
/* Generate a base function name from an opcode struct */
|
|
void get_base_name(char* base_name, opcode_struct* op)
|
|
{
|
|
sprintf(base_name, "m68k_op_%s", op->name);
|
|
if(op->size > 0)
|
|
sprintf(base_name+strlen(base_name), "_%d", op->size);
|
|
if(strcmp(op->spec_proc, UNSPECIFIED) != 0)
|
|
sprintf(base_name+strlen(base_name), "_%s", op->spec_proc);
|
|
if(strcmp(op->spec_ea, UNSPECIFIED) != 0)
|
|
sprintf(base_name+strlen(base_name), "_%s", op->spec_ea);
|
|
}
|
|
|
|
/* Write the prototype of an opcode handler function */
|
|
void write_prototype(FILE* filep, char* base_name)
|
|
{
|
|
fprintf(filep, "void %s(void);\n", base_name);
|
|
}
|
|
|
|
/* Write the name of an opcode handler function */
|
|
void write_function_name(FILE* filep, char* base_name)
|
|
{
|
|
fprintf(filep, "void %s(void)\n", base_name);
|
|
}
|
|
|
|
void add_opcode_output_table_entry(opcode_struct* op, char* name)
|
|
{
|
|
opcode_struct* ptr;
|
|
if(g_opcode_output_table_length > MAX_OPCODE_OUTPUT_TABLE_LENGTH)
|
|
error_exit("Opcode output table overflow");
|
|
|
|
ptr = g_opcode_output_table + g_opcode_output_table_length++;
|
|
|
|
*ptr = *op;
|
|
strcpy(ptr->name, name);
|
|
ptr->bits = num_bits(ptr->op_mask);
|
|
}
|
|
|
|
/*
|
|
* Comparison function for qsort()
|
|
* For entries with an equal number of set bits in
|
|
* the mask compare the match values
|
|
*/
|
|
static int DECL_SPEC compare_nof_true_bits(const void* aptr, const void* bptr)
|
|
{
|
|
const opcode_struct *a = aptr, *b = bptr;
|
|
if(a->bits != b->bits)
|
|
return a->bits - b->bits;
|
|
if(a->op_mask != b->op_mask)
|
|
return a->op_mask - b->op_mask;
|
|
return a->op_match - b->op_match;
|
|
}
|
|
|
|
void print_opcode_output_table(FILE* filep)
|
|
{
|
|
int i;
|
|
qsort((void *)g_opcode_output_table, g_opcode_output_table_length, sizeof(g_opcode_output_table[0]), compare_nof_true_bits);
|
|
|
|
for(i=0;i<g_opcode_output_table_length;i++)
|
|
write_table_entry(filep, g_opcode_output_table+i);
|
|
}
|
|
|
|
/* Write an entry in the opcode handler table */
|
|
void write_table_entry(FILE* filep, opcode_struct* op)
|
|
{
|
|
int i;
|
|
|
|
fprintf(filep, "\t{%-28s, 0x%04x, 0x%04x, {",
|
|
op->name, op->op_mask, op->op_match);
|
|
|
|
for(i=0;i<NUM_CPUS;i++)
|
|
{
|
|
fprintf(filep, "%3d", op->cycles[i]);
|
|
if(i < NUM_CPUS-1)
|
|
fprintf(filep, ", ");
|
|
}
|
|
|
|
fprintf(filep, "}},\n");
|
|
}
|
|
|
|
/* Fill out an opcode struct with a specific addressing mode of the source opcode struct */
|
|
void set_opcode_struct(opcode_struct* src, opcode_struct* dst, int ea_mode)
|
|
{
|
|
int i;
|
|
|
|
*dst = *src;
|
|
|
|
for(i=0;i<NUM_CPUS;i++)
|
|
dst->cycles[i] = get_oper_cycles(dst, ea_mode, i);
|
|
if(strcmp(dst->spec_ea, UNSPECIFIED) == 0 && ea_mode != EA_MODE_NONE)
|
|
sprintf(dst->spec_ea, "%s", g_ea_info_table[ea_mode].fname_add);
|
|
dst->op_mask |= g_ea_info_table[ea_mode].mask_add;
|
|
dst->op_match |= g_ea_info_table[ea_mode].match_add;
|
|
}
|
|
|
|
|
|
/* Generate a final opcode handler from the provided data */
|
|
void generate_opcode_handler(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* opinfo, int ea_mode)
|
|
{
|
|
char str[MAX_LINE_LENGTH+1];
|
|
opcode_struct* op = malloc(sizeof(opcode_struct));
|
|
|
|
/* Set the opcode structure and write the tables, prototypes, etc */
|
|
set_opcode_struct(opinfo, op, ea_mode);
|
|
get_base_name(str, op);
|
|
write_prototype(g_prototype_file, str);
|
|
add_opcode_output_table_entry(op, str);
|
|
write_function_name(filep, str);
|
|
|
|
/* Add any replace strings needed */
|
|
if(ea_mode != EA_MODE_NONE)
|
|
{
|
|
sprintf(str, "EA_%s_8()", g_ea_info_table[ea_mode].ea_add);
|
|
add_replace_string(replace, ID_OPHANDLER_EA_AY_8, str);
|
|
sprintf(str, "EA_%s_16()", g_ea_info_table[ea_mode].ea_add);
|
|
add_replace_string(replace, ID_OPHANDLER_EA_AY_16, str);
|
|
sprintf(str, "EA_%s_32()", g_ea_info_table[ea_mode].ea_add);
|
|
add_replace_string(replace, ID_OPHANDLER_EA_AY_32, str);
|
|
sprintf(str, "OPER_%s_8()", g_ea_info_table[ea_mode].ea_add);
|
|
add_replace_string(replace, ID_OPHANDLER_OPER_AY_8, str);
|
|
sprintf(str, "OPER_%s_16()", g_ea_info_table[ea_mode].ea_add);
|
|
add_replace_string(replace, ID_OPHANDLER_OPER_AY_16, str);
|
|
sprintf(str, "OPER_%s_32()", g_ea_info_table[ea_mode].ea_add);
|
|
add_replace_string(replace, ID_OPHANDLER_OPER_AY_32, str);
|
|
}
|
|
|
|
/* Now write the function body with the selected replace strings */
|
|
write_body(filep, body, replace);
|
|
g_num_functions++;
|
|
free(op);
|
|
}
|
|
|
|
/* Generate opcode variants based on available addressing modes */
|
|
void generate_opcode_ea_variants(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* op)
|
|
{
|
|
int old_length = replace->length;
|
|
|
|
/* No ea modes available for this opcode */
|
|
if(HAS_NO_EA_MODE(op->ea_allowed))
|
|
{
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_NONE);
|
|
return;
|
|
}
|
|
|
|
/* Check for and create specific opcodes for each available addressing mode */
|
|
if(HAS_EA_AI(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_AI);
|
|
replace->length = old_length;
|
|
if(HAS_EA_PI(op->ea_allowed))
|
|
{
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_PI);
|
|
replace->length = old_length;
|
|
if(op->size == 8)
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_PI7);
|
|
}
|
|
replace->length = old_length;
|
|
if(HAS_EA_PD(op->ea_allowed))
|
|
{
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_PD);
|
|
replace->length = old_length;
|
|
if(op->size == 8)
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_PD7);
|
|
}
|
|
replace->length = old_length;
|
|
if(HAS_EA_DI(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_DI);
|
|
replace->length = old_length;
|
|
if(HAS_EA_IX(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_IX);
|
|
replace->length = old_length;
|
|
if(HAS_EA_AW(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_AW);
|
|
replace->length = old_length;
|
|
if(HAS_EA_AL(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_AL);
|
|
replace->length = old_length;
|
|
if(HAS_EA_PCDI(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_PCDI);
|
|
replace->length = old_length;
|
|
if(HAS_EA_PCIX(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_PCIX);
|
|
replace->length = old_length;
|
|
if(HAS_EA_I(op->ea_allowed))
|
|
generate_opcode_handler(filep, body, replace, op, EA_MODE_I);
|
|
replace->length = old_length;
|
|
}
|
|
|
|
/* Generate variants of condition code opcodes */
|
|
void generate_opcode_cc_variants(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* op_in, int offset)
|
|
{
|
|
char repl[20];
|
|
char replnot[20];
|
|
int i;
|
|
int old_length = replace->length;
|
|
opcode_struct* op = malloc(sizeof(opcode_struct));
|
|
|
|
*op = *op_in;
|
|
|
|
op->op_mask |= 0x0f00;
|
|
|
|
/* Do all condition codes except t and f */
|
|
for(i=2;i<16;i++)
|
|
{
|
|
/* Add replace strings for this condition code */
|
|
sprintf(repl, "COND_%s()", g_cc_table[i][1]);
|
|
sprintf(replnot, "COND_NOT_%s()", g_cc_table[i][1]);
|
|
|
|
add_replace_string(replace, ID_OPHANDLER_CC, repl);
|
|
add_replace_string(replace, ID_OPHANDLER_NOT_CC, replnot);
|
|
|
|
/* Set the new opcode info */
|
|
strcpy(op->name+offset, g_cc_table[i][0]);
|
|
|
|
op->op_match = (op->op_match & 0xf0ff) | (i<<8);
|
|
|
|
/* Generate all opcode variants for this modified opcode */
|
|
generate_opcode_ea_variants(filep, body, replace, op);
|
|
/* Remove the above replace strings */
|
|
replace->length = old_length;
|
|
}
|
|
free(op);
|
|
}
|
|
|
|
/* Process the opcode handlers section of the input file */
|
|
void process_opcode_handlers(FILE* filep)
|
|
{
|
|
FILE* input_file = g_input_file;
|
|
char func_name[MAX_LINE_LENGTH+1];
|
|
char oper_name[MAX_LINE_LENGTH+1];
|
|
int oper_size = 0;
|
|
char oper_spec_proc[MAX_LINE_LENGTH+1];
|
|
char oper_spec_ea[MAX_LINE_LENGTH+1];
|
|
opcode_struct* opinfo;
|
|
replace_struct* replace = malloc(sizeof(replace_struct));
|
|
body_struct* body = malloc(sizeof(body_struct));
|
|
|
|
for(;;)
|
|
{
|
|
/* Find the first line of the function */
|
|
func_name[0] = 0;
|
|
while(strstr(func_name, ID_OPHANDLER_NAME) == NULL)
|
|
{
|
|
if(strcmp(func_name, ID_INPUT_SEPARATOR) == 0)
|
|
{
|
|
free(replace);
|
|
free(body);
|
|
return; /* all done */
|
|
}
|
|
if(fgetline(func_name, MAX_LINE_LENGTH, input_file) < 0)
|
|
error_exit("Premature end of file when getting function name");
|
|
}
|
|
/* Get the rest of the function */
|
|
for(body->length=0;;body->length++)
|
|
{
|
|
if(body->length > MAX_BODY_LENGTH)
|
|
error_exit("Function too long");
|
|
|
|
if(fgetline(body->body[body->length], MAX_LINE_LENGTH, input_file) < 0)
|
|
error_exit("Premature end of file when getting function body");
|
|
|
|
if(body->body[body->length][0] == '}')
|
|
{
|
|
body->length++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
g_num_primitives++;
|
|
|
|
/* Extract the function name information */
|
|
if(!extract_opcode_info(func_name, oper_name, &oper_size, oper_spec_proc, oper_spec_ea))
|
|
error_exit("Invalid " ID_OPHANDLER_NAME " format");
|
|
|
|
/* Find the corresponding table entry */
|
|
opinfo = find_opcode(oper_name, oper_size, oper_spec_proc, oper_spec_ea);
|
|
if(opinfo == NULL)
|
|
error_exit("Unable to find matching table entry for %s", func_name);
|
|
|
|
replace->length = 0;
|
|
|
|
/* Generate opcode variants */
|
|
if(strcmp(opinfo->name, "bcc") == 0 || strcmp(opinfo->name, "scc") == 0)
|
|
generate_opcode_cc_variants(filep, body, replace, opinfo, 1);
|
|
else if(strcmp(opinfo->name, "dbcc") == 0)
|
|
generate_opcode_cc_variants(filep, body, replace, opinfo, 2);
|
|
else if(strcmp(opinfo->name, "trapcc") == 0)
|
|
generate_opcode_cc_variants(filep, body, replace, opinfo, 4);
|
|
else
|
|
generate_opcode_ea_variants(filep, body, replace, opinfo);
|
|
}
|
|
|
|
free(replace);
|
|
free(body);
|
|
}
|
|
|
|
|
|
/* Populate the opcode handler table from the input file */
|
|
void populate_table(void)
|
|
{
|
|
char* ptr;
|
|
char bitpattern[17];
|
|
opcode_struct* op;
|
|
char buff[MAX_LINE_LENGTH];
|
|
int i;
|
|
int temp;
|
|
|
|
buff[0] = 0;
|
|
|
|
/* Find the start of the table */
|
|
while(strcmp(buff, ID_TABLE_START) != 0)
|
|
if(fgetline(buff, MAX_LINE_LENGTH, g_input_file) < 0)
|
|
error_exit("Premature EOF while reading table");
|
|
|
|
/* Process the entire table */
|
|
for(op = g_opcode_input_table;;op++)
|
|
{
|
|
if(fgetline(buff, MAX_LINE_LENGTH, g_input_file) < 0)
|
|
error_exit("Premature EOF while reading table");
|
|
if(strlen(buff) == 0)
|
|
continue;
|
|
/* We finish when we find an input separator */
|
|
if(strcmp(buff, ID_INPUT_SEPARATOR) == 0)
|
|
break;
|
|
|
|
/* Extract the info from the table */
|
|
ptr = buff;
|
|
|
|
/* Name */
|
|
ptr += skip_spaces(ptr);
|
|
ptr += check_strsncpy(op->name, ptr, MAX_NAME_LENGTH);
|
|
|
|
/* Size */
|
|
ptr += skip_spaces(ptr);
|
|
ptr += check_atoi(ptr, &temp);
|
|
op->size = (unsigned char)temp;
|
|
|
|
/* Special processing */
|
|
ptr += skip_spaces(ptr);
|
|
ptr += check_strsncpy(op->spec_proc, ptr, MAX_SPEC_PROC_LENGTH);
|
|
|
|
/* Specified EA Mode */
|
|
ptr += skip_spaces(ptr);
|
|
ptr += check_strsncpy(op->spec_ea, ptr, MAX_SPEC_EA_LENGTH);
|
|
|
|
/* Bit Pattern (more processing later) */
|
|
ptr += skip_spaces(ptr);
|
|
ptr += check_strsncpy(bitpattern, ptr, 17);
|
|
|
|
/* Allowed Addressing Mode List */
|
|
ptr += skip_spaces(ptr);
|
|
ptr += check_strsncpy(op->ea_allowed, ptr, EA_ALLOWED_LENGTH);
|
|
|
|
/* CPU operating mode (U = user or supervisor, S = supervisor only */
|
|
ptr += skip_spaces(ptr);
|
|
for(i=0;i<NUM_CPUS;i++)
|
|
{
|
|
op->cpu_mode[i] = *ptr++;
|
|
ptr += skip_spaces(ptr);
|
|
}
|
|
|
|
/* Allowed CPUs for this instruction */
|
|
for(i=0;i<NUM_CPUS;i++)
|
|
{
|
|
ptr += skip_spaces(ptr);
|
|
if(*ptr == UNSPECIFIED_CH)
|
|
{
|
|
op->cpus[i] = UNSPECIFIED_CH;
|
|
op->cycles[i] = 0;
|
|
ptr++;
|
|
}
|
|
else
|
|
{
|
|
op->cpus[i] = '0' + i;
|
|
ptr += check_atoi(ptr, &temp);
|
|
op->cycles[i] = (unsigned char)temp;
|
|
}
|
|
}
|
|
|
|
/* generate mask and match from bitpattern */
|
|
op->op_mask = 0;
|
|
op->op_match = 0;
|
|
for(i=0;i<16;i++)
|
|
{
|
|
op->op_mask |= (bitpattern[i] != '.') << (15-i);
|
|
op->op_match |= (bitpattern[i] == '1') << (15-i);
|
|
}
|
|
}
|
|
/* Terminate the list */
|
|
op->name[0] = 0;
|
|
}
|
|
|
|
/* Read a header or footer insert from the input file */
|
|
void read_insert(char* insert)
|
|
{
|
|
char* ptr = insert;
|
|
char* overflow = insert + MAX_INSERT_LENGTH - MAX_LINE_LENGTH;
|
|
int length;
|
|
char* first_blank = NULL;
|
|
|
|
first_blank = NULL;
|
|
|
|
/* Skip any leading blank lines */
|
|
for(length = 0;length == 0;length = fgetline(ptr, MAX_LINE_LENGTH, g_input_file))
|
|
if(ptr >= overflow)
|
|
error_exit("Buffer overflow reading inserts");
|
|
if(length < 0)
|
|
error_exit("Premature EOF while reading inserts");
|
|
|
|
/* Advance and append newline */
|
|
ptr += length;
|
|
strcpy(ptr++, "\n");
|
|
|
|
/* Read until next separator */
|
|
for(;;)
|
|
{
|
|
/* Read a new line */
|
|
if(ptr >= overflow)
|
|
error_exit("Buffer overflow reading inserts");
|
|
if((length = fgetline(ptr, MAX_LINE_LENGTH, g_input_file)) < 0)
|
|
error_exit("Premature EOF while reading inserts");
|
|
|
|
/* Stop if we read a separator */
|
|
if(strcmp(ptr, ID_INPUT_SEPARATOR) == 0)
|
|
break;
|
|
|
|
/* keep track in case there are trailing blanks */
|
|
if(length == 0)
|
|
{
|
|
if(first_blank == NULL)
|
|
first_blank = ptr;
|
|
}
|
|
else
|
|
first_blank = NULL;
|
|
|
|
/* Advance and append newline */
|
|
ptr += length;
|
|
strcpy(ptr++, "\n");
|
|
}
|
|
|
|
/* kill any trailing blank lines */
|
|
if(first_blank)
|
|
ptr = first_blank;
|
|
*ptr++ = 0;
|
|
}
|
|
|
|
|
|
|
|
/* ======================================================================== */
|
|
/* ============================= MAIN FUNCTION ============================ */
|
|
/* ======================================================================== */
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
/* File stuff */
|
|
char output_path[M68K_MAX_DIR] = "";
|
|
char filename[M68K_MAX_PATH];
|
|
/* Section identifier */
|
|
char section_id[MAX_LINE_LENGTH+1];
|
|
/* Inserts */
|
|
char temp_insert[MAX_INSERT_LENGTH+1];
|
|
char prototype_footer_insert[MAX_INSERT_LENGTH+1];
|
|
char table_header_insert[MAX_INSERT_LENGTH+1];
|
|
char table_footer_insert[MAX_INSERT_LENGTH+1];
|
|
char ophandler_header_insert[MAX_INSERT_LENGTH+1];
|
|
char ophandler_footer_insert[MAX_INSERT_LENGTH+1];
|
|
/* Flags if we've processed certain parts already */
|
|
int prototype_header_read = 0;
|
|
int prototype_footer_read = 0;
|
|
int table_header_read = 0;
|
|
int table_footer_read = 0;
|
|
int ophandler_header_read = 0;
|
|
int ophandler_footer_read = 0;
|
|
int table_body_read = 0;
|
|
int ophandler_body_read = 0;
|
|
|
|
printf("\n\tMusashi v%s 68000, 68008, 68010, 68EC020, 68020, 68040 emulator\n", g_version);
|
|
printf("\tCopyright 1998-2007 Karl Stenerud (karl@mame.net)\n\n");
|
|
|
|
/* Check if output path and source for the input file are given */
|
|
if(argc > 1)
|
|
{
|
|
char *ptr;
|
|
strcpy(output_path, argv[1]);
|
|
|
|
for(ptr = strchr(output_path, '\\'); ptr; ptr = strchr(ptr, '\\'))
|
|
*ptr = '/';
|
|
|
|
#if !(defined(__DECC) && defined(VMS))
|
|
if(output_path[strlen(output_path)-1] != '/')
|
|
strcat(output_path, "/");
|
|
#endif
|
|
|
|
if(argc > 2)
|
|
strcpy(g_input_filename, argv[2]);
|
|
}
|
|
|
|
|
|
#if defined(__DECC) && defined(VMS)
|
|
|
|
/* Open the files we need */
|
|
sprintf(filename, "%s%s", output_path, FILENAME_PROTOTYPE);
|
|
if((g_prototype_file = fopen(filename, "w")) == NULL)
|
|
perror_exit("Unable to create prototype file (%s)\n", filename);
|
|
|
|
sprintf(filename, "%s%s", output_path, FILENAME_TABLE);
|
|
if((g_table_file = fopen(filename, "w")) == NULL)
|
|
perror_exit("Unable to create table file (%s)\n", filename);
|
|
|
|
if((g_input_file=fopen(g_input_filename, "r")) == NULL)
|
|
perror_exit("can't open %s for input", g_input_filename);
|
|
|
|
#else
|
|
|
|
|
|
/* Open the files we need */
|
|
sprintf(filename, "%s%s", output_path, FILENAME_PROTOTYPE);
|
|
if((g_prototype_file = fopen(filename, "wt")) == NULL)
|
|
perror_exit("Unable to create prototype file (%s)\n", filename);
|
|
|
|
sprintf(filename, "%s%s", output_path, FILENAME_TABLE);
|
|
if((g_table_file = fopen(filename, "wt")) == NULL)
|
|
perror_exit("Unable to create table file (%s)\n", filename);
|
|
|
|
if((g_input_file=fopen(g_input_filename, "rt")) == NULL)
|
|
perror_exit("can't open %s for input", g_input_filename);
|
|
|
|
#endif
|
|
|
|
/* Get to the first section of the input file */
|
|
section_id[0] = 0;
|
|
while(strcmp(section_id, ID_INPUT_SEPARATOR) != 0)
|
|
if(fgetline(section_id, MAX_LINE_LENGTH, g_input_file) < 0)
|
|
error_exit("Premature EOF while reading input file");
|
|
|
|
/* Now process all sections */
|
|
for(;;)
|
|
{
|
|
if(fgetline(section_id, MAX_LINE_LENGTH, g_input_file) < 0)
|
|
error_exit("Premature EOF while reading input file");
|
|
if(strcmp(section_id, ID_PROTOTYPE_HEADER) == 0)
|
|
{
|
|
if(prototype_header_read)
|
|
error_exit("Duplicate prototype header");
|
|
read_insert(temp_insert);
|
|
fprintf(g_prototype_file, "%s\n\n", temp_insert);
|
|
prototype_header_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_TABLE_HEADER) == 0)
|
|
{
|
|
if(table_header_read)
|
|
error_exit("Duplicate table header");
|
|
read_insert(table_header_insert);
|
|
table_header_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_OPHANDLER_HEADER) == 0)
|
|
{
|
|
if(ophandler_header_read)
|
|
error_exit("Duplicate opcode handler header");
|
|
read_insert(ophandler_header_insert);
|
|
ophandler_header_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_PROTOTYPE_FOOTER) == 0)
|
|
{
|
|
if(prototype_footer_read)
|
|
error_exit("Duplicate prototype footer");
|
|
read_insert(prototype_footer_insert);
|
|
prototype_footer_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_TABLE_FOOTER) == 0)
|
|
{
|
|
if(table_footer_read)
|
|
error_exit("Duplicate table footer");
|
|
read_insert(table_footer_insert);
|
|
table_footer_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_OPHANDLER_FOOTER) == 0)
|
|
{
|
|
if(ophandler_footer_read)
|
|
error_exit("Duplicate opcode handler footer");
|
|
read_insert(ophandler_footer_insert);
|
|
ophandler_footer_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_TABLE_BODY) == 0)
|
|
{
|
|
if(!prototype_header_read)
|
|
error_exit("Table body encountered before prototype header");
|
|
if(!table_header_read)
|
|
error_exit("Table body encountered before table header");
|
|
if(!ophandler_header_read)
|
|
error_exit("Table body encountered before opcode handler header");
|
|
|
|
if(table_body_read)
|
|
error_exit("Duplicate table body");
|
|
|
|
populate_table();
|
|
table_body_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_OPHANDLER_BODY) == 0)
|
|
{
|
|
if(!prototype_header_read)
|
|
error_exit("Opcode handlers encountered before prototype header");
|
|
if(!table_header_read)
|
|
error_exit("Opcode handlers encountered before table header");
|
|
if(!ophandler_header_read)
|
|
error_exit("Opcode handlers encountered before opcode handler header");
|
|
if(!table_body_read)
|
|
error_exit("Opcode handlers encountered before table body");
|
|
|
|
if(ophandler_body_read)
|
|
error_exit("Duplicate opcode handler section");
|
|
|
|
fprintf(g_table_file, "%s\n\n", ophandler_header_insert);
|
|
process_opcode_handlers(g_table_file);
|
|
fprintf(g_table_file, "%s\n\n", ophandler_footer_insert);
|
|
|
|
ophandler_body_read = 1;
|
|
}
|
|
else if(strcmp(section_id, ID_END) == 0)
|
|
{
|
|
/* End of input file. Do a sanity check and then write footers */
|
|
if(!prototype_header_read)
|
|
error_exit("Missing prototype header");
|
|
if(!prototype_footer_read)
|
|
error_exit("Missing prototype footer");
|
|
if(!table_header_read)
|
|
error_exit("Missing table header");
|
|
if(!table_footer_read)
|
|
error_exit("Missing table footer");
|
|
if(!table_body_read)
|
|
error_exit("Missing table body");
|
|
if(!ophandler_header_read)
|
|
error_exit("Missing opcode handler header");
|
|
if(!ophandler_footer_read)
|
|
error_exit("Missing opcode handler footer");
|
|
if(!ophandler_body_read)
|
|
error_exit("Missing opcode handler body");
|
|
|
|
fprintf(g_table_file, "%s\n\n", table_header_insert);
|
|
print_opcode_output_table(g_table_file);
|
|
fprintf(g_table_file, "%s\n\n", table_footer_insert);
|
|
|
|
fprintf(g_prototype_file, "%s\n\n", prototype_footer_insert);
|
|
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
error_exit("Unknown section identifier: %s", section_id);
|
|
}
|
|
}
|
|
|
|
/* Close all files and exit */
|
|
fclose(g_prototype_file);
|
|
fclose(g_table_file);
|
|
fclose(g_input_file);
|
|
|
|
printf("Generated %d opcode handlers from %d primitives\n", g_num_functions, g_num_primitives);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/* ======================================================================== */
|
|
/* ============================== END OF FILE ============================= */
|
|
/* ======================================================================== */
|