mirror of
https://github.com/DarkPlacesEngine/gmqcc.git
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230 lines
9.2 KiB
C
230 lines
9.2 KiB
C
/*
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* Copyright (C) 2012
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* Dale Weiler
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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 <stdint.h>
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#include <stdlib.h>
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#include "gmqcc.h"
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typedef struct {
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uint16_t opcode;
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/* operand 1 */
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union {
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int16_t s1; /* signed */
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uint16_t u1; /* unsigned */
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};
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/* operand 2 */
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union {
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int16_t s2; /* signed */
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uint16_t u2; /* unsigned */
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};
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/* operand 3 */
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union {
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int16_t s3; /* signed */
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uint16_t u3; /* unsigned */
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};
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/*
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* This is the same as the structure in darkplaces
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* {
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* unsigned short op;
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* short a,b,c;
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* }
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* But this one is more sane to work with, and the
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* type sizes are guranteed.
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*/
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} prog_section_statement;
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typedef struct {
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/* The type is (I assume)
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* 0 = ev_void
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* 1 = ev_string
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* 2 = ev_float
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* 3 = ev_vector
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* 4 = ev_entity
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* 5 = ev_field
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* 6 = ev_function
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* 7 = ev_pointer
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* 8 = ev_bad (is this right for uint16_t type?)
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*/
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uint16_t type;
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uint16_t offset; /* offset in file? (what about length) */
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uint32_t name; /* offset in string table? (confused :() */
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} prog_section_both;
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/*
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* var and field use the same structure. But lets not use the same
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* name just for safety reasons? (still castable ...).
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*/
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typedef prog_section_both prog_section_def;
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typedef prog_section_both prog_section_field;
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typedef struct {
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int32_t entry; /* in statement table for instructions */
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uint32_t firstlocal; /* First local in local table */
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uint32_t locals; /* Total ints of params + locals */
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uint32_t profile; /* Always zero (engine uses this) */
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uint32_t name; /* name of function in string table */
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uint32_t file; /* file of the source file */
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uint32_t nargs; /* number of arguments */
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uint8_t argsize[8]; /* size of arguments (keep 8 always?) */
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} prog_section_function;
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typedef struct {
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uint32_t offset; /* Offset in file of where data begins */
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uint32_t length; /* Length of section (how many of) */
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} prog_section;
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typedef struct {
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uint32_t version; /* Program version (6) */
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uint32_t crc16; /* What is this? */
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prog_section statements; /* prog_section_statement */
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prog_section defs; /* prog_section_def */
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prog_section fields; /* prog_section_field */
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prog_section functions; /* prog_section_function */
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prog_section strings; /* What is this? */
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prog_section globals; /* What is this? */
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uint32_t entfield; /* Number of entity fields */
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} prog_header;
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/*
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* The macros below expand to a typesafe vector implementation, which
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* can be viewed in gmqcc.h
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*
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* code_statements_data -- raw prog_section_statement array
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* code_statements_elements -- number of elements
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* code_statements_allocated -- size of the array allocated
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* code_statements_add(T) -- add element (returns -1 on error)
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*
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* code_vars_data -- raw prog_section_var array
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* code_vars_elements -- number of elements
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* code_vars_allocated -- size of the array allocated
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* code_vars_add(T) -- add element (returns -1 on error)
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*
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* code_fields_data -- raw prog_section_field array
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* code_fields_elements -- number of elements
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* code_fields_allocated -- size of the array allocated
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* code_fields_add(T) -- add element (returns -1 on error)
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*
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* code_functions_data -- raw prog_section_function array
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* code_functions_elements -- number of elements
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* code_functions_allocated -- size of the array allocated
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* code_functions_add(T) -- add element (returns -1 on error)
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*
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* code_globals_data -- raw prog_section_def array
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* code_globals_elements -- number of elements
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* code_globals_allocated -- size of the array allocated
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* code_globals_add(T) -- add element (returns -1 on error)
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*
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* code_strings_data -- raw char* array
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* code_strings_elements -- number of elements
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* code_strings_allocated -- size of the array allocated
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* code_strings_add(T) -- add element (returns -1 on error)
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*/
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VECTOR_MAKE(prog_section_statement, code_statements);
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VECTOR_MAKE(prog_section_def, code_defs );
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VECTOR_MAKE(prog_section_field, code_fields );
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VECTOR_MAKE(prog_section_function, code_functions );
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VECTOR_MAKE(int, code_globals );
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VECTOR_MAKE(char, code_strings );
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/* program header */
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prog_header code_header;
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void code_write() {
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/* Add test program */
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code_strings_add('\0');
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const char *X;
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size_t size = sizeof(X);
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size_t iter = 0;
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#define FOO(Y) \
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X = Y; \
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size = sizeof(Y); \
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for (iter=0; iter < size; iter++) { \
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code_strings_add(X[iter]); \
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}
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FOO("m_init");
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FOO("print");
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FOO("hello world\n");
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FOO("m_keydown");
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FOO("m_draw");
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FOO("m_toggle");
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FOO("m_shutdown");
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int i;
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for (i=0; i<28; i++)
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code_globals_add(0); /* 28 empty */
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code_globals_add(1); /* m_init */
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code_globals_add(2); /* print */
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code_globals_add(14); /* hello world in string table */
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/* now the defs */
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code_defs_add((prog_section_def){.type=TYPE_VOID, .offset=28/*globals[28]*/, .name=1 }); /* m_init */
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code_defs_add((prog_section_def){.type=TYPE_FUNCTION,.offset=29/*globals[29]*/, .name=8 }); /* print */
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code_defs_add((prog_section_def){.type=TYPE_STRING, .offset=30/*globals[30]*/, .name=14}); /*hello_world*/
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code_functions_add((prog_section_function){0, 0, 0, 0, .name=0, 0, 0, {0}}); /* NULL */
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code_functions_add((prog_section_function){1, 0, 0, 0, .name=1, 0, 0, {0}}); /* m_init */
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code_functions_add((prog_section_function){-2, 0, 0, 0, .name=8, 0, 0, {0}}); /* print */
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code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13, 0,0, {0}}); /* m_keydown */
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code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13+10, 0,0, {0}});
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code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13+10+7, 0,0, {0}});
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code_functions_add((prog_section_function){0, 0, 0, 0, .name=14+13+10+7+9, 0,0, {0}});
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code_statements_add((prog_section_statement){0, 0, 0, 0}); /* NULL */
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code_statements_add((prog_section_statement){INSTR_STORE_F, 30/*30 is hello_world */, OFS_PARM0, 0});
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code_statements_add((prog_section_statement){INSTR_CALL1, 29/*29 is print */, 0, 0});
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code_statements_add((prog_section_statement){INSTR_RETURN, 0, 0, 0});
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code_header.version = 6;
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code_header.crc16 = 0; /* TODO: */
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code_header.statements = (prog_section){sizeof(prog_header), code_statements_elements };
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code_header.defs = (prog_section){code_header.statements.offset + sizeof(prog_section_statement)*code_statements_elements, code_defs_elements };
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code_header.fields = (prog_section){code_header.defs.offset + sizeof(prog_section_def) *code_defs_elements, code_fields_elements };
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code_header.functions = (prog_section){code_header.fields.offset + sizeof(prog_section_field) *code_fields_elements, code_functions_elements };
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code_header.globals = (prog_section){code_header.functions.offset + sizeof(prog_section_function) *code_functions_elements, code_globals_elements };
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code_header.strings = (prog_section){code_header.globals.offset + sizeof(int) *code_globals_elements, code_strings_elements };
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code_header.entfield = 0; /* TODO: */
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FILE *fp = fopen("program.dat", "wb");
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fwrite(&code_header, 1, sizeof(prog_header), fp);
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fwrite(code_statements_data, 1, sizeof(prog_section_statement)*code_statements_elements, fp);
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fwrite(code_defs_data, 1, sizeof(prog_section_def) *code_defs_elements, fp);
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fwrite(code_fields_data, 1, sizeof(prog_section_field) *code_fields_elements, fp);
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fwrite(code_functions_data, 1, sizeof(prog_section_function) *code_functions_elements, fp);
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fwrite(code_globals_data, 1, sizeof(int) *code_globals_elements, fp);
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fwrite(code_strings_data, 1, 1 *code_strings_elements, fp);
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free(code_statements_data);
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free(code_defs_data);
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free(code_fields_data);
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free(code_functions_data);
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free(code_globals_data);
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free(code_strings_data);
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fclose(fp);
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}
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