mirror of
https://github.com/DarkPlacesEngine/gmqcc.git
synced 2024-11-24 04:41:25 +00:00
257 lines
11 KiB
C
257 lines
11 KiB
C
/*
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* Copyright (C) 2012
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* Dale Weiler, Wolfgang Bumiller
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "gmqcc.h"
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prog_section_statement *code_statements;
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prog_section_def *code_defs;
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prog_section_field *code_fields;
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prog_section_function *code_functions;
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int *code_globals;
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char *code_chars;
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uint16_t code_crc;
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uint32_t code_entfields;
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void code_init() {
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prog_section_function empty_function = {0,0,0,0,0,0,0,{0}};
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prog_section_statement empty_statement = {0,{0},{0},{0}};
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prog_section_def empty_def = {0, 0, 0};
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int i = 0;
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code_entfields = 0;
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/* omit creation of null code */
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if (OPTS_FLAG(OMIT_NULL_BYTES))
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return;
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/*
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* The way progs.dat is suppose to work is odd, there needs to be
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* some null (empty) statements, functions, and 28 globals
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*/
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for(; i < 28; i++)
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vec_push(code_globals, 0);
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vec_push(code_chars, '\0');
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vec_push(code_functions, empty_function);
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vec_push(code_statements, empty_statement);
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vec_push(code_defs, empty_def);
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vec_push(code_fields, empty_def);
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}
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uint32_t code_genstring(const char *str)
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{
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uint32_t off = vec_size(code_chars);
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while (*str) {
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vec_push(code_chars, *str);
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++str;
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}
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vec_push(code_chars, 0);
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return off;
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}
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uint32_t code_cachedstring(const char *str)
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{
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size_t s = 0;
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/* We could implement knuth-morris-pratt or something
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* and also take substrings, but I'm uncomfortable with
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* pointing to subparts of strings for the sake of clarity...
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*/
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while (s < vec_size(code_chars)) {
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if (!strcmp(str, code_chars + s))
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return s;
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while (code_chars[s]) ++s;
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++s;
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}
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return code_genstring(str);
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}
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void code_test() {
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prog_section_def d1 = { TYPE_VOID, 28, 1 };
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prog_section_def d2 = { TYPE_FUNCTION, 29, 8 };
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prog_section_def d3 = { TYPE_STRING, 30, 14};
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prog_section_function f1 = { 1, 0, 0, 0, 1, 0,0, {0}};
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prog_section_function f2 = {-4, 0, 0, 0, 8, 0,0, {0}};
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prog_section_function f3 = { 0, 0, 0, 0, 14+13, 0,0, {0}};
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prog_section_function f4 = { 0, 0, 0, 0, 14+13+10, 0,0, {0}};
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prog_section_function f5 = { 0, 0, 0, 0, 14+13+10+7, 0,0, {0}};
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prog_section_function f6 = { 0, 0, 0, 0, 14+13+10+7+9, 0,0, {0}};
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prog_section_statement s1 = { INSTR_STORE_F, {30}, {OFS_PARM0}, {0}};
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prog_section_statement s2 = { INSTR_CALL1, {29}, {0}, {0}};
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prog_section_statement s3 = { INSTR_RETURN, {0}, {0}, {0}};
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strcpy(vec_add(code_chars, 0x7), "m_init");
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strcpy(vec_add(code_chars, 0x6), "print");
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strcpy(vec_add(code_chars, 0xD), "hello world\n");
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strcpy(vec_add(code_chars, 0xA), "m_keydown");
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strcpy(vec_add(code_chars, 0x7), "m_draw");
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strcpy(vec_add(code_chars, 0x9), "m_toggle");
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strcpy(vec_add(code_chars, 0xB), "m_shutdown");
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vec_push(code_globals, 1); /* m_init */
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vec_push(code_globals, 2); /* print */
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vec_push(code_globals, 14); /* hello world in string table */
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/* now the defs */
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vec_push(code_defs, d1); /* m_init */
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vec_push(code_defs, d2); /* print */
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vec_push(code_defs, d3); /*hello_world*/
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vec_push(code_functions, f1); /* m_init */
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vec_push(code_functions, f2); /* print */
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vec_push(code_functions, f3); /* m_keydown */
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vec_push(code_functions, f4);
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vec_push(code_functions, f5);
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vec_push(code_functions, f6);
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vec_push(code_statements, s1);
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vec_push(code_statements, s2);
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vec_push(code_statements, s3);
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}
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qcint code_alloc_field (size_t qcsize)
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{
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qcint pos = (qcint)code_entfields;
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code_entfields += qcsize;
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return pos;
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}
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bool code_write(const char *filename) {
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prog_header code_header;
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FILE *fp = NULL;
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size_t it = 2;
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/* see proposal.txt */
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if (OPTS_FLAG(OMIT_NULL_BYTES)) {}
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code_header.statements.offset = sizeof(prog_header);
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code_header.statements.length = vec_size(code_statements);
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code_header.defs.offset = code_header.statements.offset + (sizeof(prog_section_statement) * vec_size(code_statements));
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code_header.defs.length = vec_size(code_defs);
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code_header.fields.offset = code_header.defs.offset + (sizeof(prog_section_def) * vec_size(code_defs));
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code_header.fields.length = vec_size(code_fields);
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code_header.functions.offset = code_header.fields.offset + (sizeof(prog_section_field) * vec_size(code_fields));
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code_header.functions.length = vec_size(code_functions);
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code_header.globals.offset = code_header.functions.offset + (sizeof(prog_section_function) * vec_size(code_functions));
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code_header.globals.length = vec_size(code_globals);
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code_header.strings.offset = code_header.globals.offset + (sizeof(int32_t) * vec_size(code_globals));
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code_header.strings.length = vec_size(code_chars);
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code_header.version = 6;
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if (opts_forcecrc)
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code_header.crc16 = opts_forced_crc;
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else
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code_header.crc16 = code_crc;
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code_header.entfield = code_entfields;
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if (OPTS_FLAG(DARKPLACES_STRING_TABLE_BUG)) {
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util_debug("GEN", "Patching stringtable for -fdarkplaces-stringtablebug\n");
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/* >= + P */
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vec_push(code_chars, '\0'); /* > */
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vec_push(code_chars, '\0'); /* = */
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vec_push(code_chars, '\0'); /* P */
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}
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/* ensure all data is in LE format */
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util_endianswap(&code_header, 1, sizeof(prog_header));
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util_endianswap(code_statements, vec_size(code_statements), sizeof(prog_section_statement));
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util_endianswap(code_defs, vec_size(code_defs), sizeof(prog_section_def));
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util_endianswap(code_fields, vec_size(code_fields), sizeof(prog_section_field));
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util_endianswap(code_functions, vec_size(code_functions), sizeof(prog_section_function));
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util_endianswap(code_globals, vec_size(code_globals), sizeof(int32_t));
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fp = util_fopen(filename, "wb");
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if (!fp)
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return false;
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if (1 != fwrite(&code_header, sizeof(prog_header) , 1 , fp) ||
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vec_size(code_statements) != fwrite(code_statements, sizeof(prog_section_statement), vec_size(code_statements), fp) ||
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vec_size(code_defs) != fwrite(code_defs, sizeof(prog_section_def) , vec_size(code_defs) , fp) ||
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vec_size(code_fields) != fwrite(code_fields, sizeof(prog_section_field) , vec_size(code_fields) , fp) ||
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vec_size(code_functions) != fwrite(code_functions, sizeof(prog_section_function) , vec_size(code_functions) , fp) ||
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vec_size(code_globals) != fwrite(code_globals, sizeof(int32_t) , vec_size(code_globals) , fp) ||
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vec_size(code_chars) != fwrite(code_chars, 1 , vec_size(code_chars) , fp))
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{
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fclose(fp);
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return false;
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}
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util_debug("GEN","HEADER:\n");
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util_debug("GEN"," version: = %d\n", code_header.version );
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util_debug("GEN"," crc16: = %d\n", code_header.crc16 );
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util_debug("GEN"," entfield: = %d\n", code_header.entfield);
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util_debug("GEN"," statements = {.offset = % 8d, .length = % 8d}\n", code_header.statements.offset, code_header.statements.length);
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util_debug("GEN"," defs = {.offset = % 8d, .length = % 8d}\n", code_header.defs .offset, code_header.defs .length);
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util_debug("GEN"," fields = {.offset = % 8d, .length = % 8d}\n", code_header.fields .offset, code_header.fields .length);
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util_debug("GEN"," functions = {.offset = % 8d, .length = % 8d}\n", code_header.functions .offset, code_header.functions .length);
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util_debug("GEN"," globals = {.offset = % 8d, .length = % 8d}\n", code_header.globals .offset, code_header.globals .length);
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util_debug("GEN"," strings = {.offset = % 8d, .length = % 8d}\n", code_header.strings .offset, code_header.strings .length);
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/* FUNCTIONS */
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util_debug("GEN", "FUNCTIONS:\n");
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for (; it < vec_size(code_functions); it++) {
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size_t j = code_functions[it].entry;
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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",
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code_functions[it].entry,
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code_functions[it].firstlocal,
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code_functions[it].locals,
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code_functions[it].profile,
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code_functions[it].name,
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code_functions[it].file,
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code_functions[it].nargs,
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code_functions[it].argsize[0],
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code_functions[it].argsize[1],
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code_functions[it].argsize[2],
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code_functions[it].argsize[3],
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code_functions[it].argsize[4],
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code_functions[it].argsize[5],
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code_functions[it].argsize[6],
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code_functions[it].argsize[7]
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);
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util_debug("GEN", " NAME: %s\n", &code_chars[code_functions[it].name]);
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/* Internal functions have no code */
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if (code_functions[it].entry >= 0) {
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util_debug("GEN", " CODE:\n");
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for (;;) {
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if (code_statements[j].opcode != AINSTR_END)
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util_debug("GEN", " %-12s {% 5i,% 5i,% 5i}\n",
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asm_instr[code_statements[j].opcode].m,
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code_statements[j].o1.s1,
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code_statements[j].o2.s1,
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code_statements[j].o3.s1
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);
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else {
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util_debug("GEN", " DONE {0x00000,0x00000,0x00000}\n");
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break;
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}
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j++;
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}
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}
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}
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vec_free(code_statements);
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vec_free(code_defs);
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vec_free(code_fields);
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vec_free(code_functions);
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vec_free(code_globals);
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vec_free(code_chars);
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fclose(fp);
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return true;
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}
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