X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=code.c;h=713d98dbad964cfc80ff2350dce40d5684d93206;hp=ef33d314ab367b4eaa12a4e9777d1bc66ae927ff;hb=3518646ad7feacaec28ac5c01e7fc8eaa8dc164d;hpb=bda6fc826cac615d0d3a7ed546ff08d9dbce3bce diff --git a/code.c b/code.c index ef33d31..713d98d 100644 --- a/code.c +++ b/code.c @@ -1,6 +1,7 @@ /* - * Copyright (C) 2012 - * Dale Weiler + * Copyright (C) 2012, 2013 + * 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 +22,257 @@ * SOFTWARE. */ #include "gmqcc.h" -/* - * 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. - */ + +prog_section_statement *code_statements; +int *code_linenums; +prog_section_def *code_defs; +prog_section_field *code_fields; +prog_section_function *code_functions; +int *code_globals; +char *code_chars; +uint16_t code_crc; +uint32_t code_entfields; + +/* This is outrageous! */ +#define QCINT_ENTRY void* +#define QCINT_TO_HASH_ENTRY(q) ((void*)(uintptr_t)(q)) +#define HASH_ENTRY_TO_QCINT(h) ((qcint)(uintptr_t)(h)) +static ht code_string_cache; +static qcint code_string_cached_empty; + +void code_push_statement(prog_section_statement *stmt, int linenum) +{ + vec_push(code_statements, *stmt); + vec_push(code_linenums, linenum); +} + +void code_pop_statement() +{ + vec_pop(code_statements); + vec_pop(code_linenums); +} + +void code_init() { + prog_section_function empty_function = {0,0,0,0,0,0,0,{0,0,0,0,0,0,0,0}}; + prog_section_statement empty_statement = {0,{0},{0},{0}}; + prog_section_def empty_def = {0, 0, 0}; + int i = 0; + + code_entfields = 0; + + code_string_cache = util_htnew(OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS) ? 0x100 : 1024); + + /* + * 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++) + vec_push(code_globals, 0); + + vec_push(code_chars, '\0'); + vec_push(code_functions, empty_function); + code_push_statement(&empty_statement, 0); + vec_push(code_defs, empty_def); + vec_push(code_fields, empty_def); +} + +void *code_util_str_htgeth(hash_table_t *ht, const char *key, size_t bin); +uint32_t code_genstring(const char *str) +{ + uint32_t off; + size_t hash; + QCINT_ENTRY existing; + + if (!str) + return 0; + + if (!*str) { + if (!code_string_cached_empty) { + code_string_cached_empty = vec_size(code_chars); + vec_push(code_chars, 0); + } + return code_string_cached_empty; + } + + if (OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS)) { + hash = ((unsigned char*)str)[strlen(str)-1]; + existing = code_util_str_htgeth(code_string_cache, str, hash); + } else { + hash = util_hthash(code_string_cache, str); + existing = util_htgeth(code_string_cache, str, hash); + } + + if (existing) + return HASH_ENTRY_TO_QCINT(existing); + + off = vec_size(code_chars); + vec_upload(code_chars, str, strlen(str)+1); + + util_htseth(code_string_cache, str, hash, QCINT_TO_HASH_ENTRY(off)); + return off; +} + +qcint code_alloc_field (size_t qcsize) +{ + qcint pos = (qcint)code_entfields; + code_entfields += qcsize; + return pos; +} + +bool code_write(const char *filename, const char *lnofile) { + prog_header code_header; + FILE *fp = NULL; + size_t it = 2; + + code_header.statements.offset = sizeof(prog_header); + code_header.statements.length = vec_size(code_statements); + code_header.defs.offset = code_header.statements.offset + (sizeof(prog_section_statement) * vec_size(code_statements)); + code_header.defs.length = vec_size(code_defs); + code_header.fields.offset = code_header.defs.offset + (sizeof(prog_section_def) * vec_size(code_defs)); + code_header.fields.length = vec_size(code_fields); + code_header.functions.offset = code_header.fields.offset + (sizeof(prog_section_field) * vec_size(code_fields)); + code_header.functions.length = vec_size(code_functions); + code_header.globals.offset = code_header.functions.offset + (sizeof(prog_section_function) * vec_size(code_functions)); + code_header.globals.length = vec_size(code_globals); + code_header.strings.offset = code_header.globals.offset + (sizeof(int32_t) * vec_size(code_globals)); + code_header.strings.length = vec_size(code_chars); + code_header.version = 6; + if (opts.forcecrc) + code_header.crc16 = opts.forced_crc; + else + code_header.crc16 = code_crc; + code_header.entfield = code_entfields; + + if (OPTS_FLAG(DARKPLACES_STRING_TABLE_BUG)) { + util_debug("GEN", "Patching stringtable for -fdarkplaces-stringtablebug\n"); + + /* >= + P */ + vec_push(code_chars, '\0'); /* > */ + vec_push(code_chars, '\0'); /* = */ + vec_push(code_chars, '\0'); /* P */ + } + + /* ensure all data is in LE format */ + util_endianswap(&code_header.version, 1, sizeof(code_header.version)); + util_endianswap(&code_header.crc16, 1, sizeof(code_header.crc16)); + util_endianswap(&code_header.statements, 2, sizeof(code_header.statements.offset)); + util_endianswap(&code_header.defs, 2, sizeof(code_header.statements.offset)); + util_endianswap(&code_header.fields, 2, sizeof(code_header.statements.offset)); + util_endianswap(&code_header.functions, 2, sizeof(code_header.statements.offset)); + util_endianswap(&code_header.strings, 2, sizeof(code_header.statements.offset)); + util_endianswap(&code_header.globals, 2, sizeof(code_header.statements.offset)); + util_endianswap(&code_header.entfield, 1, sizeof(code_header.entfield)); + util_endianswap(code_statements, vec_size(code_statements), sizeof(prog_section_statement)); + util_endianswap(code_defs, vec_size(code_defs), sizeof(prog_section_def)); + util_endianswap(code_fields, vec_size(code_fields), sizeof(prog_section_field)); + util_endianswap(code_functions, vec_size(code_functions), sizeof(prog_section_function)); + util_endianswap(code_globals, vec_size(code_globals), sizeof(int32_t)); + + if (lnofile) { + uint32_t version = 1; + + fp = file_open(lnofile, "wb"); + if (!fp) + return false; + + util_endianswap(&version, 1, sizeof(version)); + util_endianswap(code_linenums, vec_size(code_linenums), sizeof(code_linenums[0])); + + + if (file_write("LNOF", 4, 1, fp) != 1 || + file_write(&version, sizeof(version), 1, fp) != 1 || + file_write(&code_header.defs.length, sizeof(code_header.defs.length), 1, fp) != 1 || + file_write(&code_header.globals.length, sizeof(code_header.globals.length), 1, fp) != 1 || + file_write(&code_header.fields.length, sizeof(code_header.fields.length), 1, fp) != 1 || + file_write(&code_header.statements.length, sizeof(code_header.statements.length), 1, fp) != 1 || + file_write(code_linenums, sizeof(code_linenums[0]), vec_size(code_linenums), fp) != vec_size(code_linenums)) + { + con_err("failed to write lno file\n"); + } + + file_close(fp); + fp = NULL; + } + + fp = file_open(filename, "wb"); + if (!fp) + return false; + + if (1 != file_write(&code_header, sizeof(prog_header) , 1 , fp) || + vec_size(code_statements) != file_write(code_statements, sizeof(prog_section_statement), vec_size(code_statements), fp) || + vec_size(code_defs) != file_write(code_defs, sizeof(prog_section_def) , vec_size(code_defs) , fp) || + vec_size(code_fields) != file_write(code_fields, sizeof(prog_section_field) , vec_size(code_fields) , fp) || + vec_size(code_functions) != file_write(code_functions, sizeof(prog_section_function) , vec_size(code_functions) , fp) || + vec_size(code_globals) != file_write(code_globals, sizeof(int32_t) , vec_size(code_globals) , fp) || + vec_size(code_chars) != file_write(code_chars, 1 , vec_size(code_chars) , fp)) + { + file_close(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 < vec_size(code_functions); it++) { + size_t j = code_functions[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[it].entry, + code_functions[it].firstlocal, + code_functions[it].locals, + code_functions[it].profile, + code_functions[it].name, + code_functions[it].file, + code_functions[it].nargs, + code_functions[it].argsize[0], + code_functions[it].argsize[1], + code_functions[it].argsize[2], + code_functions[it].argsize[3], + code_functions[it].argsize[4], + code_functions[it].argsize[5], + code_functions[it].argsize[6], + code_functions[it].argsize[7] + + ); + util_debug("GEN", " NAME: %s\n", &code_chars[code_functions[it].name]); + /* Internal functions have no code */ + if (code_functions[it].entry >= 0) { + util_debug("GEN", " CODE:\n"); + for (;;) { + if (code_statements[j].opcode != INSTR_DONE) + util_debug("GEN", " %-12s {% 5i,% 5i,% 5i}\n", + asm_instr[code_statements[j].opcode].m, + code_statements[j].o1.s1, + code_statements[j].o2.s1, + code_statements[j].o3.s1 + ); + else { + util_debug("GEN", " DONE {0x00000,0x00000,0x00000}\n"); + break; + } + j++; + } + } + } + + vec_free(code_statements); + vec_free(code_linenums); + vec_free(code_defs); + vec_free(code_fields); + vec_free(code_functions); + vec_free(code_globals); + vec_free(code_chars); + util_htdel(code_string_cache); + + file_close(fp); + return true; +}