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gmqcc/code.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"
/*
* 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 );
uint32_t code_entfields;
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_FLAG(OMIT_NULL_BYTES))
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);
code_entfields = 0;
}
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);
}
qcint code_alloc_field (size_t qcsize)
{
qcint pos = (qcint)code_entfields;
code_entfields += qcsize;
return pos;
}
bool code_write(const char *filename) {
prog_header code_header;
FILE *fp = NULL;
size_t it = 2;
/* see proposal.txt */
if (OPTS_FLAG(OMIT_NULL_BYTES)) {}
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;
if (opts_forcecrc)
code_header.crc16 = opts_forced_crc;
else
code_header.crc16 = 0; /* TODO: */
code_header.entfield = code_entfields;
if (OPTS_FLAG(DARKPLACES_STRING_TABLE_BUG)) {
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 = util_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;
}
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