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gmqcc/code.c
Wolfgang (Blub) Bumiller 836935fba2 Remove unused omit-nullbytes code in code.c
2012-12-01 23:14:52 +01:00

293 lines
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C
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/*
* 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
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "gmqcc.h"
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;
void code_push_statement(prog_section_statement *stmt, int linenum)
{
vec_push(code_statements, *stmt);
vec_push(code_linenums, linenum);
}
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}};
prog_section_def empty_def = {0, 0, 0};
int i = 0;
code_entfields = 0;
/*
* 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);
}
uint32_t code_genstring(const char *str)
{
uint32_t off = vec_size(code_chars);
while (*str) {
vec_push(code_chars, *str);
++str;
}
vec_push(code_chars, 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 < vec_size(code_chars)) {
if (!strcmp(str, code_chars + s))
return s;
while (code_chars[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}};
strcpy(vec_add(code_chars, 0x7), "m_init");
strcpy(vec_add(code_chars, 0x6), "print");
strcpy(vec_add(code_chars, 0xD), "hello world\n");
strcpy(vec_add(code_chars, 0xA), "m_keydown");
strcpy(vec_add(code_chars, 0x7), "m_draw");
strcpy(vec_add(code_chars, 0x9), "m_toggle");
strcpy(vec_add(code_chars, 0xB), "m_shutdown");
vec_push(code_globals, 1); /* m_init */
vec_push(code_globals, 2); /* print */
vec_push(code_globals, 14); /* hello world in string table */
/* now the defs */
vec_push(code_defs, d1); /* m_init */
vec_push(code_defs, d2); /* print */
vec_push(code_defs, d3); /*hello_world*/
vec_push(code_functions, f1); /* m_init */
vec_push(code_functions, f2); /* print */
vec_push(code_functions, f3); /* m_keydown */
vec_push(code_functions, f4);
vec_push(code_functions, f5);
vec_push(code_functions, f6);
vec_push(code_statements, s1);
vec_push(code_statements, s2);
vec_push(code_statements, s3);
}
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 */
}
if (lnofile) {
uint32_t lnotype = *(unsigned int*)"LNOF";
uint32_t version = 1;
fp = util_fopen(lnofile, "wb");
if (!fp)
return false;
if (fwrite(&lnotype, sizeof(lnotype), 1, fp) != 1 ||
fwrite(&version, sizeof(version), 1, fp) != 1 ||
fwrite(&code_header.defs.length, sizeof(code_header.defs.length), 1, fp) != 1 ||
fwrite(&code_header.globals.length, sizeof(code_header.globals.length), 1, fp) != 1 ||
fwrite(&code_header.fields.length, sizeof(code_header.fields.length), 1, fp) != 1 ||
fwrite(&code_header.statements.length, sizeof(code_header.statements.length), 1, fp) != 1 ||
fwrite(code_linenums, sizeof(code_linenums[0]), vec_size(code_linenums), fp) != vec_size(code_linenums))
{
con_err("failed to write lno file\n");
}
/*
h = SafeOpenWrite (destfile, 2*1024*1024);
SafeWrite (h, &lnotype, sizeof(int));
SafeWrite (h, &version, sizeof(int));
SafeWrite (h, &numglobaldefs, sizeof(int));
SafeWrite (h, &numpr_globals, sizeof(int));
SafeWrite (h, &numfielddefs, sizeof(int));
SafeWrite (h, &numstatements, sizeof(int));
SafeWrite (h, statement_linenums, numstatements*sizeof(int));
SafeClose (h);
*/
fclose(fp);
fp = NULL;
}
/* ensure all data is in LE format */
util_endianswap(&code_header, 1, sizeof(prog_header));
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));
fp = util_fopen(filename, "wb");
if (!fp)
return false;
if (1 != fwrite(&code_header, sizeof(prog_header) , 1 , fp) ||
vec_size(code_statements) != fwrite(code_statements, sizeof(prog_section_statement), vec_size(code_statements), fp) ||
vec_size(code_defs) != fwrite(code_defs, sizeof(prog_section_def) , vec_size(code_defs) , fp) ||
vec_size(code_fields) != fwrite(code_fields, sizeof(prog_section_field) , vec_size(code_fields) , fp) ||
vec_size(code_functions) != fwrite(code_functions, sizeof(prog_section_function) , vec_size(code_functions) , fp) ||
vec_size(code_globals) != fwrite(code_globals, sizeof(int32_t) , vec_size(code_globals) , fp) ||
vec_size(code_chars) != fwrite(code_chars, 1 , vec_size(code_chars) , 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 < 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 != AINSTR_END)
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_defs);
vec_free(code_fields);
vec_free(code_functions);
vec_free(code_globals);
vec_free(code_chars);
fclose(fp);
return true;
}
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