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gmqcc/code.c

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/*
* Copyright (C) 2012
* Dale Weiler
*
* 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"
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 {
uint16_t version; /* Program version (6) */
uint16_t flags; /* see propsal.txt */
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;
/*
* 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 );
int code_strings_add(const char *src) {
size_t size = strlen(src);
size_t iter = 0;
while (iter < size)
code_chars_add(src[iter++]);
code_chars_add('\0');
return code_chars_elements;
}
void code_init() {
/* 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
*/
prog_section_function empty_function = {0,0,0,0,0,0,0,{0}};
prog_section_statement empty_statement = {0,{0},{0},{0}};
int i;
for(i = 0; i < 28; i++)
code_globals_add(0);
code_chars_add ('\0');
code_functions_add (empty_function);
code_statements_add(empty_statement);
}
void code_test() {
code_strings_add("m_init");
code_strings_add("print");
code_strings_add("hello world\n");
code_strings_add("m_keydown");
code_strings_add("m_draw");
code_strings_add("m_toggle");
code_strings_add("m_shutdown");
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((prog_section_def){.type=TYPE_VOID, .offset=28/*globals[28]*/, .name=1 }); /* m_init */
code_defs_add((prog_section_def){.type=TYPE_FUNCTION,.offset=29/*globals[29]*/, .name=8 }); /* print */
code_defs_add((prog_section_def){.type=TYPE_STRING, .offset=30/*globals[30]*/, .name=14}); /*hello_world*/
code_functions_add((prog_section_function){1, 0, 0, 0, .name=1, 0, 0, {0}}); /* m_init */
code_functions_add((prog_section_function){-4, 0, 0, 0, .name=8, 0, 0, {0}}); /* print */
code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13, 0,0, {0}}); /* m_keydown */
code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13+10, 0,0, {0}});
code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13+10+7, 0,0, {0}});
code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13+10+7+9, 0,0, {0}});
code_statements_add((prog_section_statement){INSTR_STORE_F, {30}/*30 is hello_world */, {OFS_PARM0}, {0}});
code_statements_add((prog_section_statement){INSTR_CALL1, {29}/*29 is print */, {0}, {0}});
code_statements_add((prog_section_statement){INSTR_RETURN, {0}, {0}, {0}});
}
void code_write() {
prog_header code_header={0};
/* see proposal.txt */
if (opts_omit_nullcode) {
code_header.skip = 28;
code_header.flags = 1;
}
code_header.version = 6;
code_header.crc16 = 0; /* TODO: */
code_header.statements = (prog_section){sizeof(prog_header), code_statements_elements };
code_header.defs = (prog_section){code_header.statements.offset + sizeof(prog_section_statement)*code_statements_elements, code_defs_elements };
code_header.fields = (prog_section){code_header.defs.offset + sizeof(prog_section_def) *code_defs_elements, code_fields_elements };
code_header.functions = (prog_section){code_header.fields.offset + sizeof(prog_section_field) *code_fields_elements, code_functions_elements };
code_header.globals = (prog_section){code_header.functions.offset + sizeof(prog_section_function) *code_functions_elements, code_globals_elements };
code_header.strings = (prog_section){code_header.globals.offset + sizeof(int) *code_globals_elements, code_chars_elements };
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(int));
FILE *fp = fopen("program.dat", "wb");
fwrite(&code_header, 1, sizeof(prog_header), fp);
fwrite(code_statements_data, 1, sizeof(prog_section_statement)*code_statements_elements, fp);
fwrite(code_defs_data, 1, sizeof(prog_section_def) *code_defs_elements, fp);
fwrite(code_fields_data, 1, sizeof(prog_section_field) *code_fields_elements, fp);
fwrite(code_functions_data, 1, sizeof(prog_section_function) *code_functions_elements, fp);
fwrite(code_globals_data, 1, sizeof(int) *code_globals_elements, fp);
fwrite(code_chars_data, 1, 1 *code_chars_elements, fp);
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");
size_t i = 1;
for (; i < code_functions_elements; i++) {
size_t j = code_functions_data[i].entry;
util_debug("GEN", " {.entry =% 5d, .firstlocal =% 5d, .locals =% 5d, .profile =% 5d, .name =% 5d, .file =% 5d, .nargs =% 5d, .argsize =%0X }\n",
code_functions_data[i].entry,
code_functions_data[i].firstlocal,
code_functions_data[i].locals,
code_functions_data[i].profile,
code_functions_data[i].name,
code_functions_data[i].file,
code_functions_data[i].nargs,
*((int32_t*)&code_functions_data[i].argsize)
);
util_debug("GEN", " NAME: %s\n", &code_chars_data[code_functions_data[i].name]);
util_debug("GEN", " CODE:\n");
for (;;) {
if (code_statements_data[j].opcode != INSTR_DONE &&
code_statements_data[j].opcode != INSTR_RETURN)
util_debug("GEN", " %s {0x%05d,0x%05d,0x%05d}\n",
asm_instr[code_statements_data[j].opcode].m,
code_statements_data[j].s1,
code_statements_data[j].s2,
code_statements_data[j].s3
);
else 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);
}
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