diff options
Diffstat (limited to 'src/emu/cpu/m68000/m68kmake.c')
-rw-r--r-- | src/emu/cpu/m68000/m68kmake.c | 1433 |
1 files changed, 1433 insertions, 0 deletions
diff --git a/src/emu/cpu/m68000/m68kmake.c b/src/emu/cpu/m68000/m68kmake.c new file mode 100644 index 00000000000..bf4fc741748 --- /dev/null +++ b/src/emu/cpu/m68000/m68kmake.c @@ -0,0 +1,1433 @@ +/* ======================================================================== */ +/* ========================= LICENSING & COPYRIGHT ======================== */ +/* ======================================================================== */ +/* + * MUSASHI + * Version 3.31 + * + * A portable Motorola M680x0 processor emulation engine. + * Copyright 1998-2007 Karl Stenerud. All rights reserved. + * + * This code may be freely used for non-commercial purposes as long as this + * copyright notice remains unaltered in the source code and any binary files + * containing this code in compiled form. + * + * All other lisencing terms must be negotiated with the author + * (Karl Stenerud). + * + * The latest version of this code can be obtained at: + * http://kstenerud.cjb.net + */ + +/* + * Modified For OpenVMS By: Robert Alan Byer + * byer@mail.ourservers.net + */ + + +/* ======================================================================== */ +/* ============================ CODE GENERATOR ============================ */ +/* ======================================================================== */ +/* + * This is the code generator program which will generate the opcode table + * and the final opcode handlers. + * + * It requires an input file to function (default m68k_in.c), but you can + * specify your own like so: + * + * m68kmake <output path> <input file> + * + * where output path is the path where the output files should be placed, and + * input file is the file to use for input. + * + * If you modify the input file greatly from its released form, you may have + * to tweak the configuration section a bit since I'm using static allocation + * to keep things simple. + * + * + * TODO: - build a better code generator for the move instruction. + * - Add callm and rtm instructions + * - Fix RTE to handle other format words + * - Add address error (and bus error?) handling + */ + + +static const char* g_version = "3.31"; + +/* ======================================================================== */ +/* =============================== INCLUDES =============================== */ +/* ======================================================================== */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <stdarg.h> + + + +/* ======================================================================== */ +/* ============================= CONFIGURATION ============================ */ +/* ======================================================================== */ + +#define M68K_MAX_PATH 1024 +#define M68K_MAX_DIR 1024 + +#define MAX_LINE_LENGTH 200 /* length of 1 line */ +#define MAX_BODY_LENGTH 300 /* Number of lines in 1 function */ +#define MAX_REPLACE_LENGTH 30 /* Max number of replace strings */ +#define MAX_INSERT_LENGTH 5000 /* Max size of insert piece */ +#define MAX_NAME_LENGTH 30 /* Max length of ophandler name */ +#define MAX_SPEC_PROC_LENGTH 4 /* Max length of special processing str */ +#define MAX_SPEC_EA_LENGTH 5 /* Max length of specified EA str */ +#define EA_ALLOWED_LENGTH 11 /* Max length of ea allowed str */ +#define MAX_OPCODE_INPUT_TABLE_LENGTH 1000 /* Max length of opcode handler tbl */ +#define MAX_OPCODE_OUTPUT_TABLE_LENGTH 3000 /* Max length of opcode handler tbl */ + +/* Default filenames */ +#define FILENAME_INPUT "m68k_in.c" +#define FILENAME_PROTOTYPE "m68kops.h" +#define FILENAME_TABLE "m68kops.c" + + +/* Identifier sequences recognized by this program */ + +#define ID_INPUT_SEPARATOR "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" + +#define ID_BASE "M68KMAKE" +#define ID_PROTOTYPE_HEADER ID_BASE "_PROTOTYPE_HEADER" +#define ID_PROTOTYPE_FOOTER ID_BASE "_PROTOTYPE_FOOTER" +#define ID_TABLE_HEADER ID_BASE "_TABLE_HEADER" +#define ID_TABLE_FOOTER ID_BASE "_TABLE_FOOTER" +#define ID_TABLE_BODY ID_BASE "_TABLE_BODY" +#define ID_TABLE_START ID_BASE "_TABLE_START" +#define ID_OPHANDLER_HEADER ID_BASE "_OPCODE_HANDLER_HEADER" +#define ID_OPHANDLER_FOOTER ID_BASE "_OPCODE_HANDLER_FOOTER" +#define ID_OPHANDLER_BODY ID_BASE "_OPCODE_HANDLER_BODY" +#define ID_END ID_BASE "_END" + +#define ID_OPHANDLER_NAME ID_BASE "_OP" +#define ID_OPHANDLER_EA_AY_8 ID_BASE "_GET_EA_AY_8" +#define ID_OPHANDLER_EA_AY_16 ID_BASE "_GET_EA_AY_16" +#define ID_OPHANDLER_EA_AY_32 ID_BASE "_GET_EA_AY_32" +#define ID_OPHANDLER_OPER_AY_8 ID_BASE "_GET_OPER_AY_8" +#define ID_OPHANDLER_OPER_AY_16 ID_BASE "_GET_OPER_AY_16" +#define ID_OPHANDLER_OPER_AY_32 ID_BASE "_GET_OPER_AY_32" +#define ID_OPHANDLER_CC ID_BASE "_CC" +#define ID_OPHANDLER_NOT_CC ID_BASE "_NOT_CC" + + +#ifndef DECL_SPEC +#define DECL_SPEC +#endif /* DECL_SPEC */ + + + +/* ======================================================================== */ +/* ============================== PROTOTYPES ============================== */ +/* ======================================================================== */ + +enum { + CPU_TYPE_000 = 0, + CPU_TYPE_010, + CPU_TYPE_020, + CPU_TYPE_040, + NUM_CPUS +}; + +#define UNSPECIFIED "." +#define UNSPECIFIED_CH '.' + +#define HAS_NO_EA_MODE(A) (strcmp(A, "..........") == 0) +#define HAS_EA_AI(A) ((A)[0] == 'A') +#define HAS_EA_PI(A) ((A)[1] == '+') +#define HAS_EA_PD(A) ((A)[2] == '-') +#define HAS_EA_DI(A) ((A)[3] == 'D') +#define HAS_EA_IX(A) ((A)[4] == 'X') +#define HAS_EA_AW(A) ((A)[5] == 'W') +#define HAS_EA_AL(A) ((A)[6] == 'L') +#define HAS_EA_PCDI(A) ((A)[7] == 'd') +#define HAS_EA_PCIX(A) ((A)[8] == 'x') +#define HAS_EA_I(A) ((A)[9] == 'I') + +enum +{ + EA_MODE_NONE, /* No special addressing mode */ + EA_MODE_AI, /* Address register indirect */ + EA_MODE_PI, /* Address register indirect with postincrement */ + EA_MODE_PI7, /* Address register 7 indirect with postincrement */ + EA_MODE_PD, /* Address register indirect with predecrement */ + EA_MODE_PD7, /* Address register 7 indirect with predecrement */ + EA_MODE_DI, /* Address register indirect with displacement */ + EA_MODE_IX, /* Address register indirect with index */ + EA_MODE_AW, /* Absolute word */ + EA_MODE_AL, /* Absolute long */ + EA_MODE_PCDI, /* Program counter indirect with displacement */ + EA_MODE_PCIX, /* Program counter indirect with index */ + EA_MODE_I /* Immediate */ +}; + + +/* Everything we need to know about an opcode */ +typedef struct +{ + char name[MAX_NAME_LENGTH]; /* opcode handler name */ + unsigned char size; /* Size of operation */ + char spec_proc[MAX_SPEC_PROC_LENGTH]; /* Special processing mode */ + char spec_ea[MAX_SPEC_EA_LENGTH]; /* Specified effective addressing mode */ + unsigned char bits; /* Number of significant bits (used for sorting the table) */ + unsigned short op_mask; /* Mask to apply for matching an opcode to a handler */ + unsigned short op_match; /* Value to match after masking */ + char ea_allowed[EA_ALLOWED_LENGTH]; /* Effective addressing modes allowed */ + char cpu_mode[NUM_CPUS]; /* User or supervisor mode */ + char cpus[NUM_CPUS+1]; /* Allowed CPUs */ + unsigned char cycles[NUM_CPUS]; /* cycles for 000, 010, 020 */ +} opcode_struct; + + +/* All modifications necessary for a specific EA mode of an instruction */ +typedef struct +{ + const char* fname_add; + const char* ea_add; + unsigned int mask_add; + unsigned int match_add; +} ea_info_struct; + + +/* Holds the body of a function */ +typedef struct +{ + char body[MAX_BODY_LENGTH][MAX_LINE_LENGTH+1]; + int length; +} body_struct; + + +/* Holds a sequence of search / replace strings */ +typedef struct +{ + char replace[MAX_REPLACE_LENGTH][2][MAX_LINE_LENGTH+1]; + int length; +} replace_struct; + + +/* Function Prototypes */ +void error_exit(const char* fmt, ...); +void perror_exit(const char* fmt, ...); +int check_strsncpy(char* dst, char* src, int maxlength); +int check_atoi(char* str, int *result); +int skip_spaces(char* str); +int num_bits(int value); +int atoh(char* buff); +int fgetline(char* buff, int nchars, FILE* file); +int get_oper_cycles(opcode_struct* op, int ea_mode, int cpu_type); +opcode_struct* find_opcode(char* name, int size, char* spec_proc, char* spec_ea); +opcode_struct* find_illegal_opcode(void); +int extract_opcode_info(char* src, char* name, int* size, char* spec_proc, char* spec_ea); +void add_replace_string(replace_struct* replace, const char* search_str, const char* replace_str); +void write_body(FILE* filep, body_struct* body, replace_struct* replace); +void get_base_name(char* base_name, opcode_struct* op); +void write_prototype(FILE* filep, char* base_name); +void write_function_name(FILE* filep, char* base_name); +void add_opcode_output_table_entry(opcode_struct* op, char* name); +static int DECL_SPEC compare_nof_true_bits(const void* aptr, const void* bptr); +void print_opcode_output_table(FILE* filep); +void write_table_entry(FILE* filep, opcode_struct* op); +void set_opcode_struct(opcode_struct* src, opcode_struct* dst, int ea_mode); +void generate_opcode_handler(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* opinfo, int ea_mode); +void generate_opcode_ea_variants(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* op); +void generate_opcode_cc_variants(FILE* filep, body_struct* body, replace_struct* replace, opcode_struct* op_in, int offset); +void process_opcode_handlers(FILE* filep); +void populate_table(void); +void read_insert(char* insert); + + + +/* ======================================================================== */ +/* ================================= DATA ================================= */ +/* ======================================================================== */ + +/* Name of the input file */ +char g_input_filename[M68K_MAX_PATH] = FILENAME_INPUT; + +/* File handles */ +FILE* g_input_file = NULL; +FILE* g_prototype_file = NULL; +FILE* g_table_file = NULL; + +int g_num_functions = 0; /* Number of functions processed */ +int g_num_primitives = 0; /* Number of function primitives read */ +int g_line_number = 1; /* Current line number */ + +/* Opcode handler table */ +opcode_struct g_opcode_input_table[MAX_OPCODE_INPUT_TABLE_LENGTH]; + +opcode_struct g_opcode_output_table[MAX_OPCODE_OUTPUT_TABLE_LENGTH]; +int g_opcode_output_table_length = 0; + +ea_info_struct g_ea_info_table[13] = +{/* fname ea mask match */ + {"", "", 0x00, 0x00}, /* EA_MODE_NONE */ + {"ai", "AY_AI", 0x38, 0x10}, /* EA_MODE_AI */ + {"pi", "AY_PI", 0x38, 0x18}, /* EA_MODE_PI */ + {"pi7", "A7_PI", 0x3f, 0x1f}, /* EA_MODE_PI7 */ + {"pd", "AY_PD", 0x38, 0x20}, /* EA_MODE_PD */ + {"pd7", "A7_PD", 0x3f, 0x27}, /* EA_MODE_PD7 */ + {"di", "AY_DI", 0x38, 0x28}, /* EA_MODE_DI */ + {"ix", "AY_IX", 0x38, 0x30}, /* EA_MODE_IX */ + {"aw", "AW", 0x3f, 0x38}, /* EA_MODE_AW */ + {"al", "AL", 0x3f, 0x39}, /* EA_MODE_AL */ + {"pcdi", "PCDI", 0x3f, 0x3a}, /* EA_MODE_PCDI */ + {"pcix", "PCIX", 0x3f, 0x3b}, /* EA_MODE_PCIX */ + {"i", "I", 0x3f, 0x3c}, /* EA_MODE_I */ +}; + + +const char* g_cc_table[16][2] = +{ + { "t", "T"}, /* 0000 */ + { "f", "F"}, /* 0001 */ + {"hi", "HI"}, /* 0010 */ + {"ls", "LS"}, /* 0011 */ + {"cc", "CC"}, /* 0100 */ + {"cs", "CS"}, /* 0101 */ + {"ne", "NE"}, /* 0110 */ + {"eq", "EQ"}, /* 0111 */ + {"vc", "VC"}, /* 1000 */ + {"vs", "VS"}, /* 1001 */ + {"pl", "PL"}, /* 1010 */ + {"mi", "MI"}, /* 1011 */ + {"ge", "GE"}, /* 1100 */ + {"lt", "LT"}, /* 1101 */ + {"gt", "GT"}, /* 1110 */ + {"le", "LE"}, /* 1111 */ +}; + +/* size to index translator (0 -> 0, 8 and 16 -> 1, 32 -> 2) */ +int g_size_select_table[33] = +{ + 0, /* unsized */ + 0, 0, 0, 0, 0, 0, 0, 1, /* 8 */ + 0, 0, 0, 0, 0, 0, 0, 1, /* 16 */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 /* 32 */ +}; + +/* Extra cycles required for certain EA modes */ +/* TODO: correct timings for 040 */ +int g_ea_cycle_table[13][NUM_CPUS][3] = +{/* 000 010 020 040 */ + {{ 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}}, /* EA_MODE_NONE */ + {{ 0, 4, 8}, { 0, 4, 8}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_AI */ + {{ 0, 4, 8}, { 0, 4, 8}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_PI */ + {{ 0, 4, 8}, { 0, 4, 8}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_PI7 */ + {{ 0, 6, 10}, { 0, 6, 10}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_PD */ + {{ 0, 6, 10}, { 0, 6, 10}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_PD7 */ + {{ 0, 8, 12}, { 0, 8, 12}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_DI */ + {{ 0, 10, 14}, { 0, 10, 14}, { 0, 7, 7}, { 0, 7, 7}}, /* EA_MODE_IX */ + {{ 0, 8, 12}, { 0, 8, 12}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_AW */ + {{ 0, 12, 16}, { 0, 12, 16}, { 0, 4, 4}, { 0, 4, 4}}, /* EA_MODE_AL */ + {{ 0, 8, 12}, { 0, 8, 12}, { 0, 5, 5}, { 0, 5, 5}}, /* EA_MODE_PCDI */ + {{ 0, 10, 14}, { 0, 10, 14}, { 0, 7, 7}, { 0, 7, 7}}, /* EA_MODE_PCIX */ + {{ 0, 4, 8}, { 0, 4, 8}, { 0, 2, 4}, { 0, 2, 4}}, /* EA_MODE_I */ +}; + +/* Extra cycles for JMP instruction (000, 010) */ +int g_jmp_cycle_table[13] = +{ + 0, /* EA_MODE_NONE */ + 4, /* EA_MODE_AI */ + 0, /* EA_MODE_PI */ + 0, /* EA_MODE_PI7 */ + 0, /* EA_MODE_PD */ + 0, /* EA_MODE_PD7 */ + 6, /* EA_MODE_DI */ + 10, /* EA_MODE_IX */ + 6, /* EA_MODE_AW */ + 8, /* EA_MODE_AL */ + 6, /* EA_MODE_PCDI */ + 10, /* EA_MODE_PCIX */ + 0, /* EA_MODE_I */ +}; + +/* Extra cycles for JSR instruction (000, 010) */ +int g_jsr_cycle_table[13] = +{ + 0, /* EA_MODE_NONE */ + 4, /* EA_MODE_AI */ + 0, /* EA_MODE_PI */ + 0, /* EA_MODE_PI7 */ + 0, /* EA_MODE_PD */ + 0, /* EA_MODE_PD7 */ + 6, /* EA_MODE_DI */ + 10, /* EA_MODE_IX */ + 6, /* EA_MODE_AW */ + 8, /* EA_MODE_AL */ + 6, /* EA_MODE_PCDI */ + 10, /* EA_MODE_PCIX */ + 0, /* EA_MODE_I */ +}; + +/* Extra cycles for LEA instruction (000, 010) */ +int g_lea_cycle_table[13] = +{ + 0, /* EA_MODE_NONE */ + 4, /* EA_MODE_AI */ + 0, /* EA_MODE_PI */ + 0, /* EA_MODE_PI7 */ + 0, /* EA_MODE_PD */ + 0, /* EA_MODE_PD7 */ + 8, /* EA_MODE_DI */ + 12, /* EA_MODE_IX */ + 8, /* EA_MODE_AW */ + 12, /* EA_MODE_AL */ + 8, /* EA_MODE_PCDI */ + 12, /* EA_MODE_PCIX */ + 0, /* EA_MODE_I */ +}; + +/* Extra cycles for PEA instruction (000, 010) */ +int g_pea_cycle_table[13] = +{ + 0, /* EA_MODE_NONE */ + 6, /* EA_MODE_AI */ + 0, /* EA_MODE_PI */ + 0, /* EA_MODE_PI7 */ + 0, /* EA_MODE_PD */ + 0, /* EA_MODE_PD7 */ + 10, /* EA_MODE_DI */ + 14, /* EA_MODE_IX */ + 10, /* EA_MODE_AW */ + 14, /* EA_MODE_AL */ + 10, /* EA_MODE_PCDI */ + 14, /* EA_MODE_PCIX */ + 0, /* EA_MODE_I */ +}; + +/* Extra cycles for MOVEM instruction (000, 010) */ +int g_movem_cycle_table[13] = +{ + 0, /* EA_MODE_NONE */ + 0, /* EA_MODE_AI */ + 0, /* EA_MODE_PI */ + 0, /* EA_MODE_PI7 */ + 0, /* EA_MODE_PD */ + 0, /* EA_MODE_PD7 */ + 4, /* EA_MODE_DI */ + 6, /* EA_MODE_IX */ + 4, /* EA_MODE_AW */ + 8, /* EA_MODE_AL */ + 0, /* EA_MODE_PCDI */ + 0, /* EA_MODE_PCIX */ + 0, /* EA_MODE_I */ +}; + +/* Extra cycles for MOVES instruction (010) */ +int g_moves_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, 12}, /* EA_MODE_PD */ + { 0, 6, 12}, /* EA_MODE_PD7 */ + { 0, 12, 16}, /* EA_MODE_DI */ + { 0, 16, 20}, /* EA_MODE_IX */ + { 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; + ptr++; + ptr += skip_spaces(ptr); + + 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; + 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 ============================= */ +/* ======================================================================== */ |