X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=code.c;h=caeab883b8ada2edb099e2113b9f4cc2ff02357a;hb=aa08a2da683ae6138e9207328cd41fbf680a7c1e;hp=ef33d314ab367b4eaa12a4e9777d1bc66ae927ff;hpb=bda6fc826cac615d0d3a7ed546ff08d9dbce3bce;p=xonotic%2Fgmqcc.git diff --git a/code.c b/code.c index ef33d31..caeab88 100644 --- a/code.c +++ b/code.c @@ -1,6 +1,6 @@ /* - * Copyright (C) 2012 - * Dale Weiler + * Copyright (C) 2012 + * Dale Weiler, Wolfgang Bumiller * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in @@ -21,9 +21,272 @@ * SOFTWARE. */ #include "gmqcc.h" + +typedef struct { + uint32_t offset; /* Offset in file of where data begins */ + uint32_t length; /* Length of section (how many of) */ +} prog_section; + +typedef struct { + uint32_t version; /* Program version (6) */ + uint16_t crc16; /* What is this? */ + uint16_t skip; /* see propsal.txt */ + + prog_section statements; /* prog_section_statement */ + prog_section defs; /* prog_section_def */ + prog_section fields; /* prog_section_field */ + prog_section functions; /* prog_section_function */ + prog_section strings; /* What is this? */ + prog_section globals; /* What is this? */ + uint32_t entfield; /* Number of entity fields */ +} prog_header; + /* - * This file is empty: This is where codegen will take place: Once the - * parser is completed, right now it on;y creates parse trees. Syntax - * checking and other convoluted things on the parse tree need to take - * place much like a parser. + * The macros below expand to a typesafe vector implementation, which + * can be viewed in gmqcc.h + * + * code_statements_data -- raw prog_section_statement array + * code_statements_elements -- number of elements + * code_statements_allocated -- size of the array allocated + * code_statements_add(T) -- add element (returns -1 on error) + * + * code_vars_data -- raw prog_section_var array + * code_vars_elements -- number of elements + * code_vars_allocated -- size of the array allocated + * code_vars_add(T) -- add element (returns -1 on error) + * + * code_fields_data -- raw prog_section_field array + * code_fields_elements -- number of elements + * code_fields_allocated -- size of the array allocated + * code_fields_add(T) -- add element (returns -1 on error) + * + * code_functions_data -- raw prog_section_function array + * code_functions_elements -- number of elements + * code_functions_allocated -- size of the array allocated + * code_functions_add(T) -- add element (returns -1 on error) + * + * code_globals_data -- raw prog_section_def array + * code_globals_elements -- number of elements + * code_globals_allocated -- size of the array allocated + * code_globals_add(T) -- add element (returns -1 on error) + * + * code_chars_data -- raw char* array + * code_chars_elements -- number of elements + * code_chars_allocated -- size of the array allocated + * code_chars_add(T) -- add element (returns -1 on error) */ +VECTOR_MAKE(prog_section_statement, code_statements); +VECTOR_MAKE(prog_section_def, code_defs ); +VECTOR_MAKE(prog_section_field, code_fields ); +VECTOR_MAKE(prog_section_function, code_functions ); +VECTOR_MAKE(int, code_globals ); +VECTOR_MAKE(char, code_chars ); + +void code_init() { + prog_section_function empty_function = {0,0,0,0,0,0,0,{0}}; + prog_section_statement empty_statement = {0,{0},{0},{0}}; + int i = 0; + + /* omit creation of null code */ + if (opts_omit_nullcode) + return; + + /* + * The way progs.dat is suppose to work is odd, there needs to be + * some null (empty) statements, functions, and 28 globals + */ + for(; i < 28; i++) + code_globals_add(0); + + code_chars_add ('\0'); + code_functions_add (empty_function); + code_statements_add(empty_statement); +} + +uint32_t code_genstring(const char *str) +{ + uint32_t off = code_chars_elements; + while (*str) { + code_chars_add(*str); + ++str; + } + code_chars_add(0); + return off; +} + +uint32_t code_cachedstring(const char *str) +{ + size_t s = 0; + /* We could implement knuth-morris-pratt or something + * and also take substrings, but I'm uncomfortable with + * pointing to subparts of strings for the sake of clarity... + */ + while (s < code_chars_elements) { + if (!strcmp(str, code_chars_data + s)) + return s; + while (code_chars_data[s]) ++s; + ++s; + } + return code_genstring(str); +} + +void code_test() { + prog_section_def d1 = { TYPE_VOID, 28, 1 }; + prog_section_def d2 = { TYPE_FUNCTION, 29, 8 }; + prog_section_def d3 = { TYPE_STRING, 30, 14}; + prog_section_function f1 = { 1, 0, 0, 0, 1, 0,0, {0}}; + prog_section_function f2 = {-4, 0, 0, 0, 8, 0,0, {0}}; + prog_section_function f3 = { 0, 0, 0, 0, 14+13, 0,0, {0}}; + prog_section_function f4 = { 0, 0, 0, 0, 14+13+10, 0,0, {0}}; + prog_section_function f5 = { 0, 0, 0, 0, 14+13+10+7, 0,0, {0}}; + prog_section_function f6 = { 0, 0, 0, 0, 14+13+10+7+9, 0,0, {0}}; + prog_section_statement s1 = { INSTR_STORE_F, {30}, {OFS_PARM0}, {0}}; + prog_section_statement s2 = { INSTR_CALL1, {29}, {0}, {0}}; + prog_section_statement s3 = { INSTR_RETURN, {0}, {0}, {0}}; + + code_chars_put("m_init", 0x6); + code_chars_put("print", 0x5); + code_chars_put("hello world\n", 0xC); + code_chars_put("m_keydown", 0x9); + code_chars_put("m_draw", 0x6); + code_chars_put("m_toggle", 0x8); + code_chars_put("m_shutdown", 0xA); + + code_globals_add(1); /* m_init */ + code_globals_add(2); /* print */ + code_globals_add(14); /* hello world in string table */ + + /* now the defs */ + code_defs_add (d1); /* m_init */ + code_defs_add (d2); /* print */ + code_defs_add (d3); /*hello_world*/ + code_functions_add (f1); /* m_init */ + code_functions_add (f2); /* print */ + code_functions_add (f3); /* m_keydown */ + code_functions_add (f4); + code_functions_add (f5); + code_functions_add (f6); + code_statements_add(s1); + code_statements_add(s2); + code_statements_add(s3); +} + +bool code_write(const char *filename) { + prog_header code_header; + FILE *fp = NULL; + size_t it = 2; + + /* see proposal.txt */ + if (opts_omit_nullcode) {} + code_header.statements.offset = sizeof(prog_header); + code_header.statements.length = code_statements_elements; + code_header.defs.offset = code_header.statements.offset + (sizeof(prog_section_statement) * code_statements_elements); + code_header.defs.length = code_defs_elements; + code_header.fields.offset = code_header.defs.offset + (sizeof(prog_section_def) * code_defs_elements); + code_header.fields.length = code_fields_elements; + code_header.functions.offset = code_header.fields.offset + (sizeof(prog_section_field) * code_fields_elements); + code_header.functions.length = code_functions_elements; + code_header.globals.offset = code_header.functions.offset + (sizeof(prog_section_function) * code_functions_elements); + code_header.globals.length = code_globals_elements; + code_header.strings.offset = code_header.globals.offset + (sizeof(int32_t) * code_globals_elements); + code_header.strings.length = code_chars_elements; + code_header.version = 6; + code_header.crc16 = 0; /* TODO: */ + code_header.entfield = 0; /* TODO: */ + + if (opts_darkplaces_stringtablebug) { + util_debug("GEN", "Patching stringtable for -fdarkplaces-stringtablebug\n"); + + /* >= + P */ + code_chars_add('\0'); /* > */ + code_chars_add('\0'); /* = */ + code_chars_add('\0'); /* P */ + } + + /* ensure all data is in LE format */ + util_endianswap(&code_header, 1, sizeof(prog_header)); + util_endianswap(code_statements_data, code_statements_elements, sizeof(prog_section_statement)); + util_endianswap(code_defs_data, code_defs_elements, sizeof(prog_section_def)); + util_endianswap(code_fields_data, code_fields_elements, sizeof(prog_section_field)); + util_endianswap(code_functions_data, code_functions_elements, sizeof(prog_section_function)); + util_endianswap(code_globals_data, code_globals_elements, sizeof(int32_t)); + + fp = fopen(filename, "wb"); + if (!fp) + return false; + + if (1 != fwrite(&code_header, sizeof(prog_header), 1, fp) || + code_statements_elements != fwrite(code_statements_data, sizeof(prog_section_statement), code_statements_elements, fp) || + code_defs_elements != fwrite(code_defs_data, sizeof(prog_section_def) , code_defs_elements , fp) || + code_fields_elements != fwrite(code_fields_data, sizeof(prog_section_field) , code_fields_elements , fp) || + code_functions_elements != fwrite(code_functions_data, sizeof(prog_section_function) , code_functions_elements , fp) || + code_globals_elements != fwrite(code_globals_data, sizeof(int32_t) , code_globals_elements , fp) || + code_chars_elements != fwrite(code_chars_data, 1 , code_chars_elements , fp)) + { + fclose(fp); + return false; + } + + util_debug("GEN","HEADER:\n"); + util_debug("GEN"," version: = %d\n", code_header.version ); + util_debug("GEN"," crc16: = %d\n", code_header.crc16 ); + util_debug("GEN"," entfield: = %d\n", code_header.entfield); + util_debug("GEN"," statements = {.offset = % 8d, .length = % 8d}\n", code_header.statements.offset, code_header.statements.length); + util_debug("GEN"," defs = {.offset = % 8d, .length = % 8d}\n", code_header.defs .offset, code_header.defs .length); + util_debug("GEN"," fields = {.offset = % 8d, .length = % 8d}\n", code_header.fields .offset, code_header.fields .length); + util_debug("GEN"," functions = {.offset = % 8d, .length = % 8d}\n", code_header.functions .offset, code_header.functions .length); + util_debug("GEN"," globals = {.offset = % 8d, .length = % 8d}\n", code_header.globals .offset, code_header.globals .length); + util_debug("GEN"," strings = {.offset = % 8d, .length = % 8d}\n", code_header.strings .offset, code_header.strings .length); + + /* FUNCTIONS */ + util_debug("GEN", "FUNCTIONS:\n"); + for (; it < code_functions_elements; it++) { + size_t j = code_functions_data[it].entry; + util_debug("GEN", " {.entry =% 5d, .firstlocal =% 5d, .locals =% 5d, .profile =% 5d, .name =% 5d, .file =% 5d, .nargs =% 5d, .argsize ={%d,%d,%d,%d,%d,%d,%d,%d} }\n", + code_functions_data[it].entry, + code_functions_data[it].firstlocal, + code_functions_data[it].locals, + code_functions_data[it].profile, + code_functions_data[it].name, + code_functions_data[it].file, + code_functions_data[it].nargs, + code_functions_data[it].argsize[0], + code_functions_data[it].argsize[1], + code_functions_data[it].argsize[2], + code_functions_data[it].argsize[3], + code_functions_data[it].argsize[4], + code_functions_data[it].argsize[5], + code_functions_data[it].argsize[6], + code_functions_data[it].argsize[7] + + ); + util_debug("GEN", " NAME: %s\n", &code_chars_data[code_functions_data[it].name]); + /* Internal functions have no code */ + if (code_functions_data[it].entry >= 0) { + util_debug("GEN", " CODE:\n"); + for (;;) { + if (code_statements_data[j].opcode != AINSTR_END) + util_debug("GEN", " %s {0x%05x,0x%05x,0x%05x}\n", + asm_instr[code_statements_data[j].opcode].m, + code_statements_data[j].o1.s1, + code_statements_data[j].o2.s1, + code_statements_data[j].o3.s1 + ); + else { + util_debug("GEN", " DONE {0x00000,0x00000,0x00000}\n"); + break; + } + j++; + } + } + } + + mem_d(code_statements_data); + mem_d(code_defs_data); + mem_d(code_fields_data); + mem_d(code_functions_data); + mem_d(code_globals_data); + mem_d(code_chars_data); + fclose(fp); + return true; +}