X-Git-Url: https://git.xonotic.org/?a=blobdiff_plain;f=gmqcc.h;h=4eebd20b14b40d094966dfd38f5d7c03477fea83;hb=3072ce7ebaa1b0ecac17fcae3da77457666f27c2;hp=5acfbd57963ca3eeaaff524b951b0791fdda00b2;hpb=02e9098d3dfc679137641c977bb9938ad9bacebb;p=xonotic%2Fgmqcc.git diff --git a/gmqcc.h b/gmqcc.h index 5acfbd5..4eebd20 100644 --- a/gmqcc.h +++ b/gmqcc.h @@ -1,6 +1,6 @@ /* - * Copyright (C) 2012 - * Dale Weiler + * 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 @@ -22,195 +22,1008 @@ */ #ifndef GMQCC_HDR #define GMQCC_HDR +#include +#include +#include #include +#include -/* The types supported by the language */ -#define TYPE_VOID 0 -#define TYPE_STRING 1 -#define TYPE_FLOAT 2 -#define TYPE_VECTOR 3 -#define TYPE_ENTITY 4 -#define TYPE_FIELD 5 -#define TYPE_FUNCTION 6 -#define TYPE_POINTER 7 +#define GMQCC_VERSION_MAJOR 0 +#define GMQCC_VERSION_MINOR 1 +#define GMQCC_VERSION_PATCH 0 +#define GMQCC_VERSION_BUILD(J,N,P) (((J)<<16)|((N)<<8)|(P)) +#define GMQCC_VERSION \ + GMQCC_VERSION_BUILD(GMQCC_VERSION_MAJOR, GMQCC_VERSION_MINOR, GMQCC_VERSION_PATCH) /* - * there are 3 accessible memory zones - - * globals - * array of 32bit ints/floats, mixed, LE, - * entities - * structure is up to the engine but the fields are a linear array - * of mixed ints/floats, there are globals referring to the offsets - * of these in the entity struct so there are ADDRESS and STOREP and - * LOAD instructions that use globals containing field offsets. - * strings - * a static array in the progs.dat, with file parsing creating - * additional constants, and some engine fields are mapped by - * address as well to unique string offsets - */ - -/* - * Instructions - * These are the external instructions supported by the interperter - * this is what things compile to (from the C code). This is not internal - * instructions for support like int, and such (which are translated) - */ -#define INSTR_DONE 0 -// math -#define INSTR_MUL_F 1 /* multiplication float */ -#define INSTR_MUL_V 2 /* multiplication vector */ -#define INSTR_MUL_FV 3 /* multiplication float->vector */ -#define INSTR_MUL_VF 4 /* multiplication vector->float */ -#define INSTR_DIV_F 5 -#define INSTR_ADD_F 6 -#define INSTR_ADD_V 7 -#define INSTR_SUB_F 8 -#define INSTR_SUB_V 9 -// compare -#define INSTR_EQ_F 10 -#define INSTR_EQ_V 11 -#define INSTR_EQ_S 12 -#define INSTR_EQ_E 13 -#define INSTR_EQ_FNC 14 -#define INSTR_NE_F 15 -#define INSTR_NE_V 16 -#define INSTR_NE_S 17 -#define INSTR_NE_E 18 -#define INSTR_NE_FNC 19 -// multi compare -#define INSTR_LE 20 -#define INSTR_GE 21 -#define INSTR_LT 22 -#define INSTR_GT 23 -// load and store -#define INSTR_LOAD_F 24 -#define INSTR_LOAD_V 25 -#define INSTR_LOAD_S 26 -#define INSTR_LOAD_ENT 27 -#define INSTR_LOAD_FLD 28 -#define INSTR_LOAD_FNC 29 -#define INSTR_STORE_F 31 -#define INSTR_STORE_V 32 -#define INSTR_STORE_S 33 -#define INSTR_STORE_ENT 34 -#define INSTR_STORE_FLD 35 -#define INSTR_STORE_FNC 36 -// others -#define INSTR_ADDRESS 30 -#define INSTR_RETURN 37 -#define INSTR_NOT_F 38 -#define INSTR_NOT_V 39 -#define INSTR_NOT_S 40 -#define INSTR_NOT_ENT 41 -#define INSTR_NOT_FNC 42 -#define INSTR_IF 43 -#define INSTR_IFNOT 44 -#define INSTR_CALL0 45 -#define INSTR_CALL1 46 -#define INSTR_CALL2 47 -#define INSTR_CALL3 48 -#define INSTR_CALL4 49 -#define INSTR_CALL5 50 -#define INSTR_CALL6 51 -#define INSTR_CALL7 52 -#define INSTR_CALL8 53 -#define INSTR_STATE 54 -#define INSTR_GOTO 55 -#define INSTR_AND 56 -#define INSTR_OR 57 -#define INSTR_BITAND 59 -#define INSTR_BITOR 60 + * We cannoy rely on C99 at all, since compilers like MSVC + * simply don't support it. We define our own boolean type + * as a result (since we cannot include ). For + * compilers that are in 1999 mode (C99 compliant) we can use + * the language keyword _Bool which can allow for better code + * on GCC and GCC-like compilers, opposed to `int`. + */ +#ifndef __cplusplus +# ifdef false +# undef false +# endif /* !false */ +# ifdef true +# undef true +# endif /* !true */ +# define false (0) +# define true (1) +# ifdef __STDC_VERSION__ +# if __STDC_VERSION__ < 199901L && __GNUC__ < 3 + typedef int bool; +# else + typedef _Bool bool; +# endif +# else + typedef int bool; +# endif /* !__STDC_VERSION__ */ +#endif /* !__cplusplus */ /* - * This is the smallest lexer I've ever wrote: and I must say, it's quite - * more nicer than those large bulky complex parsers that most people write - * which has some sort of a complex state. - */ -struct lex_file { - /* - * This is a simple state for lexing, no need to be complex for qc - * code. It's trivial stuff. - */ - FILE *file; - char peek[5]; /* extend for depthier peeks */ - int last; - int current; - int length; - int size; - long line; /* Line the lexer is on */ - char lastok[8192]; /* No token shall ever be bigger than this! */ -}; + * Of some functions which are generated we want to make sure + * that the result isn't ignored. To find such function calls, + * we use this macro. + */ +#if defined(__GNUC__) || defined(__CLANG__) +# define GMQCC_WARN __attribute__((warn_unused_result)) +#else +# define GMQCC_WARN +#endif +/* + * This is a hack to silent clang regarding empty + * body if statements. + */ +#define GMQCC_SUPPRESS_EMPTY_BODY do { } while (0) + +/* + * Inline is not supported in < C90, however some compilers + * like gcc and clang might have an inline attribute we can + * use if present. + */ +#ifdef __STDC_VERSION__ +# if __STDC_VERSION__ < 199901L +# if defined(__GNUC__) || defined (__CLANG__) +# if __GNUC__ < 2 +# define GMQCC_INLINE +# else +# define GMQCC_INLINE __attribute__ ((always_inline)) +# endif +# else +# define GMQCC_INLINE +# endif +# else +# define GMQCC_INLINE inline +# endif +#else +# define GMQCC_INLINE +#endif /* !__STDC_VERSION__ */ + +/* + * noreturn is present in GCC and clang + * it's required for _ast_node_destory otherwise -Wmissing-noreturn + * in clang complains about there being no return since abort() is + * called. + */ +#if (defined(__GNUC__) && __GNUC__ >= 2) || defined(__CLANG__) +# define GMQCC_NORETURN __attribute__ ((noreturn)) +#else +# define GMQCC_NORETURN +#endif + +/* + * stdint.h and inttypes.h -less subset + * for systems that don't have it, which we must + * assume is all systems. (int8_t not required) + */ +#if CHAR_MIN == -128 + typedef unsigned char uint8_t; /* same as below */ +#elif SCHAR_MIN == -128 + typedef unsigned char uint8_t; /* same as above */ +#endif +#if SHRT_MAX == 0x7FFF + typedef short int16_t; + typedef unsigned short uint16_t; +#elif INT_MAX == 0x7FFF + typedef int int16_t; + typedef unsigned int uint16_t; +#endif +#if INT_MAX == 0x7FFFFFFF + typedef int int32_t; + typedef unsigned int uint32_t; + typedef long int64_t; + typedef unsigned long uint64_t; +#elif LONG_MAX == 0x7FFFFFFF + typedef long int32_t; + typedef unsigned long uint32_t; + + /* + * It's nearly impossible to figure out a 64bit type at + * this point without making assumptions about the build + * enviroment. So if clang or gcc is detected use some + * compiler builtins to create a 64 signed and unsigned + * type. + */ +# if defined(__GNUC__) || defined (__CLANG__) + typedef int int64_t __attribute__((__mode__(__DI__))); + typedef unsigned int uint64_t __attribute__((__mode__(__DI__))); +# else + /* + * Incoorectly size the types so static assertions below will + * fail. There is no valid way to get a 64bit type at this point + * without making assumptions of too many things. + */ + typedef struct { char _fail : 0; } int64_t; + typedef struct { char _fail : 0; } uint64_t; +# endif +#endif +#ifdef _LP64 /* long pointer == 64 */ + typedef unsigned long uintptr_t; + typedef long intptr_t; +#else + typedef unsigned int uintptr_t; + typedef int intptr_t; +#endif +/* Ensure type sizes are correct: */ +typedef char uint8_size_is_correct [sizeof(uint8_t) == 1?1:-1]; +typedef char uint16_size_is_correct [sizeof(uint16_t) == 2?1:-1]; +typedef char uint32_size_is_correct [sizeof(uint32_t) == 4?1:-1]; +typedef char uint64_size_is_correct [sizeof(uint64_t) == 8?1:-1]; +typedef char int16_size_if_correct [sizeof(int16_t) == 2?1:-1]; +typedef char int32_size_is_correct [sizeof(int32_t) == 4?1:-1]; +typedef char int64_size_is_correct [sizeof(int64_t) == 8?1:-1]; +/* intptr_t / uintptr_t correct size check */ +typedef char uintptr_size_is_correct[sizeof(intptr_t) == sizeof(int*)?1:-1]; +typedef char intptr_size_is_correct [sizeof(uintptr_t)== sizeof(int*)?1:-1]; + +/*===================================================================*/ +/*============================ lex.c ================================*/ +/*===================================================================*/ +typedef struct lex_file_t { + FILE *file; /* file handler */ + char *name; /* name of file */ + char peek [5]; + char lastok[8192]; + + int last; /* last token */ + int current; /* current token */ + int length; /* bytes left to parse */ + int size; /* never changes (size of file) */ + int line; /* what line are we on? */ +} lex_file; /* * It's important that this table never exceed 32 keywords, the ascii * table starts at 33 (and we don't want conflicts) */ -#define TOKEN_DO 0 -#define TOKEN_ELSE 1 -#define TOKEN_IF 2 -#define TOKEN_WHILE 3 -#define TOKEN_BREAK 4 -#define TOKEN_CONTINUE 5 -#define TOKEN_RETURN 6 -#define TOKEN_GOTO 7 -#define TOKEN_FOR 8 // extension -#define TOKEN_TYPEDEF 9 // extension - +enum { + TOKEN_DO , + TOKEN_ELSE , + TOKEN_IF , + TOKEN_WHILE , + TOKEN_BREAK , + TOKEN_CONTINUE , + TOKEN_RETURN , + TOKEN_GOTO , + TOKEN_FOR , /* extension */ + TOKEN_TYPEDEF , /* extension */ -#define TOKEN_FLOAT 110 -#define TOKEN_VECTOR 111 -#define TOKEN_STRING 112 -#define TOKEN_ENTITY 113 -#define TOKEN_VOID 114 + /* ensure the token types are out of the */ + /* bounds of anyothers that may conflict. */ + TOKEN_FLOAT = 110, + TOKEN_VECTOR , + TOKEN_STRING , + TOKEN_ENTITY , + TOKEN_VOID +}; /* * Lexer state constants, these are numbers for where exactly in * the lexing the lexer is at. Or where it decided to stop if a lexer - * error occurs. + * error occurs. These numbers must be > where the ascii-table ends + * and > the last type token which is TOKEN_VOID */ -#define LEX_COMMENT 1128 /* higher than ascii */ -#define LEX_CHRLIT 1129 -#define LEX_STRLIT 1130 -#define LEX_IDENT 1131 +enum { + LEX_COMMENT = 1128, + LEX_CHRLIT , + LEX_STRLIT , + LEX_IDENT +}; -int lex_token(struct lex_file *); -void lex_reset(struct lex_file *); -int lex_close(struct lex_file *); -struct lex_file *lex_open (FILE *); +int lex_token (lex_file *); +void lex_reset (lex_file *); +void lex_close (lex_file *); +void lex_parse (lex_file *); +lex_file *lex_include(lex_file *, const char *); +void lex_init (const char *, lex_file **); -/* errors */ +/*===================================================================*/ +/*========================== error.c ================================*/ +/*===================================================================*/ #define ERROR_LEX (SHRT_MAX+0) #define ERROR_PARSE (SHRT_MAX+1) #define ERROR_INTERNAL (SHRT_MAX+2) #define ERROR_COMPILER (SHRT_MAX+3) #define ERROR_PREPRO (SHRT_MAX+4) -int error(int, const char *, ...); +int error(lex_file *, int, const char *, ...); -/* parse.c */ -int parse(struct lex_file *); -struct parsenode { - struct parsenode *next; - int type; /* some token */ -}; +/*===================================================================*/ +/*========================== parse.c ================================*/ +/*===================================================================*/ +int parse_gen(lex_file *); -/* typedef.c */ +/*===================================================================*/ +/*========================== typedef.c ==============================*/ +/*===================================================================*/ typedef struct typedef_node_t { - char *name; /* name of actual type */ + char *name; } typedef_node; void typedef_init(); void typedef_clear(); typedef_node *typedef_find(const char *); -int typedef_add (const char *, const char *); +int typedef_add (lex_file *file, const char *, const char *); + + +/*===================================================================*/ +/*=========================== util.c ================================*/ +/*===================================================================*/ +void *util_memory_a (unsigned int, unsigned int, const char *); +void util_memory_d (void *, unsigned int, const char *); +void util_meminfo (); + +bool util_strupper (const char *); +bool util_strdigit (const char *); +bool util_strncmpexact (const char *, const char *, size_t); +char *util_strdup (const char *); +char *util_strrq (const char *); +char *util_strrnl (const char *); +char *util_strsws (const char *); +char *util_strchp (const char *, const char *); +void util_debug (const char *, const char *, ...); +int util_getline (char **, size_t *, FILE *); +void util_endianswap (void *, int, int); + +uint32_t util_crc32(const char *, int, register const short); -/* alloc.c */ -void *memory_a(unsigned int, unsigned int, const char *); -void memory_d(void *, unsigned int, const char *); #ifdef NOTRACK -# define mem_a(x) malloc(x) -# define mem_d(x) free (x) +# define mem_a(x) malloc(x) +# define mem_d(x) free (x) #else -# define mem_a(x) memory_a((x), __LINE__, __FILE__) -# define mem_d(x) memory_d((x), __LINE__, __FILE__) +# define mem_a(x) util_memory_a((x), __LINE__, __FILE__) +# define mem_d(x) util_memory_d((x), __LINE__, __FILE__) #endif + +/* + * TODO: make these safer to use. Currently this only works on + * x86 and x86_64, some systems will likely not like this. Such + * as BE systems. + */ +#define FLT2INT(Y) *((int32_t*)&(Y)) +#define INT2FLT(Y) *((float *)&(Y)) + +/* Builds vector type (usefull for inside structures) */ +#define VECTOR_SNAP(X,Y) X ## Y +#define VECTOR_FILL(X,Y) VECTOR_SNAP(X,Y) +#define VECTOR_TYPE(T,N) \ + T* N##_data = NULL; \ + long N##_elements = 0; \ + long N##_allocated = 0 +/* Builds vector add */ +#define VECTOR_CORE(T,N) \ + int N##_add(T element) { \ + void *temp = NULL; \ + if (N##_elements == N##_allocated) { \ + if (N##_allocated == 0) { \ + N##_allocated = 12; \ + } else { \ + N##_allocated *= 2; \ + } \ + if (!(temp = mem_a(N##_allocated * sizeof(T)))) { \ + mem_d(temp); \ + return -1; \ + } \ + memcpy(temp, N##_data, (N##_elements * sizeof(T))); \ + mem_d(N##_data); \ + N##_data = (T*)temp; \ + } \ + N##_data[N##_elements] = element; \ + return N##_elements++; \ + } \ + int N##_put(T* elements, size_t len) { \ + len --; \ + elements--; \ + while (N##_add(*++elements) != -1 && len--); \ + return N##_elements; \ + } \ + typedef char VECTOR_FILL(extra_semicolon_,__COUNTER__) +#define VECTOR_PROT(T,N) \ + extern T* N##_data ; \ + extern long N##_elements ; \ + extern long N##_allocated; \ + int N##_add(T); \ + int N##_put(T *, size_t) +#define VECTOR_MAKE(T,N) \ + VECTOR_TYPE(T,N); \ + VECTOR_CORE(T,N) + +/*===================================================================*/ +/*=========================== code.c ================================*/ +/*===================================================================*/ + +/* Note: if you change the order, fix type_sizeof in ir.c */ +enum { + TYPE_VOID , + TYPE_STRING , + TYPE_FLOAT , + TYPE_VECTOR , + TYPE_ENTITY , + TYPE_FIELD , + TYPE_FUNCTION , + TYPE_POINTER , + /* TYPE_INTEGER , */ + TYPE_VARIANT , + + TYPE_COUNT +}; + +extern size_t type_sizeof[TYPE_COUNT]; +extern uint16_t type_store_instr[TYPE_COUNT]; +/* could use type_store_instr + INSTR_STOREP_F - INSTR_STORE_F + * but this breaks when TYPE_INTEGER is added, since with the enhanced + * instruction set, the old ones are left untouched, thus the _I instructions + * are at a seperate place. + */ +extern uint16_t type_storep_instr[TYPE_COUNT]; + +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 { + uint32_t version; /* Program version (6) */ + 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; + +/* + * Each paramater incerements by 3 since vector types hold + * 3 components (x,y,z). + */ +#define OFS_NULL 0 +#define OFS_RETURN 1 +#define OFS_PARM0 (OFS_RETURN+3) +#define OFS_PARM1 (OFS_PARM0 +3) +#define OFS_PARM2 (OFS_PARM1 +3) +#define OFS_PARM3 (OFS_PARM2 +3) +#define OFS_PARM4 (OFS_PARM3 +3) +#define OFS_PARM5 (OFS_PARM4 +3) +#define OFS_PARM6 (OFS_PARM5 +3) +#define OFS_PARM7 (OFS_PARM6 +3) + +typedef struct { + uint16_t opcode; + + /* operand 1 */ + union { + int16_t s1; /* signed */ + uint16_t u1; /* unsigned */ + } o1; + /* operand 2 */ + union { + int16_t s1; /* signed */ + uint16_t u1; /* unsigned */ + } o2; + /* operand 3 */ + union { + int16_t s1; /* signed */ + uint16_t u1; /* unsigned */ + } o3; + + /* + * This is the same as the structure in darkplaces + * { + * unsigned short op; + * short a,b,c; + * } + * But this one is more sane to work with, and the + * type sizes are guranteed. + */ +} prog_section_statement; + +typedef struct { + /* The types: + * 0 = ev_void + * 1 = ev_string + * 2 = ev_float + * 3 = ev_vector + * 4 = ev_entity + * 5 = ev_field + * 6 = ev_function + * 7 = ev_pointer -- engine only + * 8 = ev_bad -- engine only + */ + uint16_t type; + uint16_t offset; + uint32_t name; +} prog_section_both; +typedef prog_section_both prog_section_def; +typedef prog_section_both prog_section_field; + +typedef struct { + int32_t entry; /* in statement table for instructions */ + uint32_t firstlocal; /* First local in local table */ + uint32_t locals; /* Total ints of params + locals */ + uint32_t profile; /* Always zero (engine uses this) */ + uint32_t name; /* name of function in string table */ + uint32_t file; /* file of the source file */ + uint32_t nargs; /* number of arguments */ + uint8_t argsize[8]; /* size of arguments (keep 8 always?) */ +} prog_section_function; + +/* + * Instructions + * These are the external instructions supported by the interperter + * this is what things compile to (from the C code). + */ +enum { + INSTR_DONE, + INSTR_MUL_F, + INSTR_MUL_V, + INSTR_MUL_FV, + INSTR_MUL_VF, + INSTR_DIV_F, + INSTR_ADD_F, + INSTR_ADD_V, + INSTR_SUB_F, + INSTR_SUB_V, + INSTR_EQ_F, + INSTR_EQ_V, + INSTR_EQ_S, + INSTR_EQ_E, + INSTR_EQ_FNC, + INSTR_NE_F, + INSTR_NE_V, + INSTR_NE_S, + INSTR_NE_E, + INSTR_NE_FNC, + INSTR_LE, + INSTR_GE, + INSTR_LT, + INSTR_GT, + INSTR_LOAD_F, + INSTR_LOAD_V, + INSTR_LOAD_S, + INSTR_LOAD_ENT, + INSTR_LOAD_FLD, + INSTR_LOAD_FNC, + INSTR_ADDRESS, + INSTR_STORE_F, + INSTR_STORE_V, + INSTR_STORE_S, + INSTR_STORE_ENT, + INSTR_STORE_FLD, + INSTR_STORE_FNC, + INSTR_STOREP_F, + INSTR_STOREP_V, + INSTR_STOREP_S, + INSTR_STOREP_ENT, + INSTR_STOREP_FLD, + INSTR_STOREP_FNC, + INSTR_RETURN, + INSTR_NOT_F, + INSTR_NOT_V, + INSTR_NOT_S, + INSTR_NOT_ENT, + INSTR_NOT_FNC, + INSTR_IF, + INSTR_IFNOT, + INSTR_CALL0, + INSTR_CALL1, + INSTR_CALL2, + INSTR_CALL3, + INSTR_CALL4, + INSTR_CALL5, + INSTR_CALL6, + INSTR_CALL7, + INSTR_CALL8, + INSTR_STATE, + INSTR_GOTO, + INSTR_AND, + INSTR_OR, + INSTR_BITAND, + INSTR_BITOR, + + /* + * Virtual instructions used by the assembler + * keep at the end but before virtual instructions + * for the IR below. + */ + AINSTR_END, + + /* + * Virtual instructions used by the IR + * Keep at the end! + */ + VINSTR_PHI, + VINSTR_JUMP, + VINSTR_COND +}; + +/* + * The symbols below are created by the following + * expanded macros: + * + * 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 ); + */ +VECTOR_PROT(prog_section_statement, code_statements); +VECTOR_PROT(prog_section_statement, code_statements); +VECTOR_PROT(prog_section_def, code_defs ); +VECTOR_PROT(prog_section_field, code_fields ); +VECTOR_PROT(prog_section_function, code_functions ); +VECTOR_PROT(int, code_globals ); +VECTOR_PROT(char, code_chars ); + +/* + * code_write -- writes out the compiled file + * code_init -- prepares the code file + */ +bool code_write (const char *filename); +void code_init (); +uint32_t code_genstring (const char *string); +uint32_t code_cachedstring(const char *string); + +/*===================================================================*/ +/*========================= assembler.c =============================*/ +/*===================================================================*/ +static const struct { + const char *m; /* menomic */ + const size_t o; /* operands */ + const size_t l; /* menomic len */ +} asm_instr[] = { + { "DONE" , 1, 4 }, + { "MUL_F" , 3, 5 }, + { "MUL_V" , 3, 5 }, + { "MUL_FV" , 3, 6 }, + { "MUL_VF" , 3, 6 }, + { "DIV" , 0, 3 }, + { "ADD_F" , 3, 5 }, + { "ADD_V" , 3, 5 }, + { "SUB_F" , 3, 5 }, + { "DUB_V" , 3, 5 }, + { "EQ_F" , 0, 4 }, + { "EQ_V" , 0, 4 }, + { "EQ_S" , 0, 4 }, + { "EQ_E" , 0, 4 }, + { "EQ_FNC" , 0, 6 }, + { "NE_F" , 0, 4 }, + { "NE_V" , 0, 4 }, + { "NE_S" , 0, 4 }, + { "NE_E" , 0, 4 }, + { "NE_FNC" , 0, 6 }, + { "LE" , 0, 2 }, + { "GE" , 0, 2 }, + { "LT" , 0, 2 }, + { "GT" , 0, 2 }, + { "FIELD_F" , 0, 7 }, + { "FIELD_V" , 0, 7 }, + { "FIELD_S" , 0, 7 }, + { "FIELD_ENT" , 0, 9 }, + { "FIELD_FLD" , 0, 9 }, + { "FIELD_FNC" , 0, 9 }, + { "ADDRESS" , 0, 7 }, + { "STORE_F" , 0, 7 }, + { "STORE_V" , 0, 7 }, + { "STORE_S" , 0, 7 }, + { "STORE_ENT" , 0, 9 }, + { "STORE_FLD" , 0, 9 }, + { "STORE_FNC" , 0, 9 }, + { "STOREP_F" , 0, 8 }, + { "STOREP_V" , 0, 8 }, + { "STOREP_S" , 0, 8 }, + { "STOREP_ENT", 0, 10}, + { "STOREP_FLD", 0, 10}, + { "STOREP_FNC", 0, 10}, + { "RETURN" , 0, 6 }, + { "NOT_F" , 0, 5 }, + { "NOT_V" , 0, 5 }, + { "NOT_S" , 0, 5 }, + { "NOT_ENT" , 0, 7 }, + { "NOT_FNC" , 0, 7 }, + { "IF" , 0, 2 }, + { "IFNOT" , 0, 5 }, + { "CALL0" , 1, 5 }, + { "CALL1" , 2, 5 }, + { "CALL2" , 3, 5 }, + { "CALL3" , 4, 5 }, + { "CALL4" , 5, 5 }, + { "CALL5" , 6, 5 }, + { "CALL6" , 7, 5 }, + { "CALL7" , 8, 5 }, + { "CALL8" , 9, 5 }, + { "STATE" , 0, 5 }, + { "GOTO" , 0, 4 }, + { "AND" , 0, 3 }, + { "OR" , 0, 2 }, + { "BITAND" , 0, 6 }, + { "BITOR" , 0, 5 }, + { "END" , 0, 3 } /* virtual assembler instruction */ +}; + +void asm_init (const char *, FILE **); +void asm_close(FILE *); +void asm_parse(FILE *); +/*===================================================================*/ +/*============================= main.c ==============================*/ +/*===================================================================*/ +enum { + COMPILER_QCC, /* circa QuakeC */ + COMPILER_FTEQCC, /* fteqcc QuakeC */ + COMPILER_QCCX, /* qccx QuakeC */ + COMPILER_GMQCC /* this QuakeC */ +}; +extern bool opts_debug; +extern bool opts_memchk; +extern bool opts_darkplaces_stringtablebug; +extern bool opts_omit_nullcode; +extern int opts_compiler; +/*===================================================================*/ +/*============================= ast.c ===============================*/ +/*===================================================================*/ +#define MEM_VECTOR_PROTO(Towner, Tmem, mem) \ + bool GMQCC_WARN Towner##_##mem##_add(Towner*, Tmem); \ + bool GMQCC_WARN Towner##_##mem##_remove(Towner*, size_t) + +#define MEM_VECTOR_PROTO_ALL(Towner, Tmem, mem) \ + MEM_VECTOR_PROTO(Towner, Tmem, mem); \ + bool GMQCC_WARN Towner##_##mem##_find(Towner*, Tmem, size_t*); \ + void Towner##_##mem##_clear(Towner*) + +#define MEM_VECTOR_MAKE(Twhat, name) \ + Twhat *name; \ + size_t name##_count; \ + size_t name##_alloc + +#define MEM_VEC_FUN_ADD(Tself, Twhat, mem) \ +bool GMQCC_WARN Tself##_##mem##_add(Tself *self, Twhat f) \ +{ \ + Twhat *reall; \ + if (self->mem##_count == self->mem##_alloc) { \ + if (!self->mem##_alloc) { \ + self->mem##_alloc = 16; \ + } else { \ + self->mem##_alloc *= 2; \ + } \ + reall = (Twhat*)mem_a(sizeof(Twhat) * self->mem##_alloc); \ + if (!reall) { \ + return false; \ + } \ + memcpy(reall, self->mem, sizeof(Twhat) * self->mem##_count); \ + mem_d(self->mem); \ + self->mem = reall; \ + } \ + self->mem[self->mem##_count++] = f; \ + return true; \ +} + +#define MEM_VEC_FUN_REMOVE(Tself, Twhat, mem) \ +bool GMQCC_WARN Tself##_##mem##_remove(Tself *self, size_t idx) \ +{ \ + size_t i; \ + Twhat *reall; \ + if (idx >= self->mem##_count) { \ + return true; /* huh... */ \ + } \ + for (i = idx; i < self->mem##_count-1; ++i) { \ + self->mem[i] = self->mem[i+1]; \ + } \ + self->mem##_count--; \ + if (self->mem##_count < self->mem##_count/2) { \ + self->mem##_alloc /= 2; \ + reall = (Twhat*)mem_a(sizeof(Twhat) * self->mem##_count); \ + if (!reall) { \ + return false; \ + } \ + memcpy(reall, self->mem, sizeof(Twhat) * self->mem##_count); \ + mem_d(self->mem); \ + self->mem = reall; \ + } \ + return true; \ +} + +#define MEM_VEC_FUN_FIND(Tself, Twhat, mem) \ +bool GMQCC_WARN Tself##_##mem##_find(Tself *self, Twhat obj, size_t *idx) \ +{ \ + size_t i; \ + for (i = 0; i < self->mem##_count; ++i) { \ + if (self->mem[i] == obj) { \ + if (idx) { \ + *idx = i; \ + } \ + return true; \ + } \ + } \ + return false; \ +} + +#define MEM_VEC_FUN_APPEND(Tself, Twhat, mem) \ +bool GMQCC_WARN Tself##_##mem##_append(Tself *s, Twhat *p, size_t c) \ +{ \ + Twhat *reall; \ + if (s->mem##_count+c >= s->mem##_alloc) { \ + if (!s->mem##_alloc) { \ + s->mem##_alloc = c < 16 ? 16 : c; \ + } else { \ + s->mem##_alloc *= 2; \ + if (s->mem##_count+c >= s->mem##_alloc) { \ + s->mem##_alloc = s->mem##_count+c; \ + } \ + } \ + reall = (Twhat*)mem_a(sizeof(Twhat) * s->mem##_alloc); \ + if (!reall) { \ + return false; \ + } \ + memcpy(reall, s->mem, sizeof(Twhat) * s->mem##_count); \ + mem_d(s->mem); \ + s->mem = reall; \ + } \ + memcpy(&s->mem[s->mem##_count], p, c*sizeof(*p)); \ + s->mem##_count += c; \ + return true; \ +} + +#define MEM_VEC_FUN_RESIZE(Tself, Twhat, mem) \ +bool GMQCC_WARN Tself##_##mem##_resize(Tself *s, size_t c) \ +{ \ + Twhat *reall; \ + if (c > s->mem##_alloc) { \ + reall = (Twhat*)mem_a(sizeof(Twhat) * c); \ + if (!reall) { return false; } \ + memcpy(reall, s->mem, sizeof(Twhat) * s->mem##_count); \ + s->mem##_alloc = c; \ + mem_d(s->mem); \ + s->mem = reall; \ + return true; \ + } \ + s->mem##_count = c; \ + if (c < (s->mem##_alloc / 2)) { \ + reall = (Twhat*)mem_a(sizeof(Twhat) * c); \ + if (!reall) { return false; } \ + memcpy(reall, s->mem, sizeof(Twhat) * c); \ + mem_d(s->mem); \ + s->mem = reall; \ + } \ + return true; \ +} + +#define MEM_VEC_FUN_CLEAR(Tself, mem) \ +void Tself##_##mem##_clear(Tself *self) \ +{ \ + if (!self->mem) \ + return; \ + mem_d((void*) self->mem); \ + self->mem = NULL; \ + self->mem##_count = 0; \ + self->mem##_alloc = 0; \ +} + +#define MEM_VECTOR_CLEAR(owner, mem) \ + if ((owner)->mem) \ + mem_d((void*)((owner)->mem)); \ + (owner)->mem = NULL; \ + (owner)->mem##_count = 0; \ + (owner)->mem##_alloc = 0 + +#define MEM_VECTOR_INIT(owner, mem) \ +{ \ + (owner)->mem = NULL; \ + (owner)->mem##_count = 0; \ + (owner)->mem##_alloc = 0; \ +} + +#define MEM_VEC_FUNCTIONS(Tself, Twhat, mem) \ +MEM_VEC_FUN_REMOVE(Tself, Twhat, mem) \ +MEM_VEC_FUN_ADD(Tself, Twhat, mem) + +#define MEM_VEC_FUNCTIONS_ALL(Tself, Twhat, mem) \ +MEM_VEC_FUNCTIONS(Tself, Twhat, mem) \ +MEM_VEC_FUN_CLEAR(Tself, mem) \ +MEM_VEC_FUN_FIND(Tself, Twhat, mem) + +enum store_types { + store_global, + store_local, /* local, assignable for now, should get promoted later */ + store_param, /* parameters, they are locals with a fixed position */ + store_value, /* unassignable */ + store_return /* unassignable, at OFS_RETURN */ +}; + +typedef struct { + float x, y, z; +} vector; + +/* + * A shallow copy of a lex_file to remember where which ast node + * came from. + */ +typedef struct { + const char *file; + size_t line; +} lex_ctx; + +/*===================================================================*/ +/*============================= exec.c ==============================*/ +/*===================================================================*/ + +/* darkplaces has (or will have) a 64 bit prog loader + * where the 32 bit qc program is autoconverted on load. + * Since we may want to support that as well, let's redefine + * float and int here. + */ +typedef float qcfloat; +typedef int32_t qcint; + +typedef union { + qcint _int; + qcint string; + qcint function; + qcint edict; + qcfloat _float; + qcfloat vector[3]; + qcint ivector[3]; +} qcany; + +typedef char qcfloat_size_is_correct [sizeof(qcfloat) == 4 ?1:-1]; +typedef char qcint_size_is_correct [sizeof(qcint) == 4 ?1:-1]; + +enum { + VMERR_OK, + VMERR_TEMPSTRING_ALLOC, + + VMERR_END +}; + +#define VM_JUMPS_DEFAULT 1000000 + +/* execute-flags */ +#define VMXF_DEFAULT 0x0000 /* default flags - nothing */ +#define VMXF_TRACE 0x0001 /* trace: print statements before executing */ +#define VMXF_PROFILE 0x0002 /* profile: increment the profile counters */ + +struct qc_program_s; + +typedef int (*prog_builtin)(struct qc_program_s *prog); + +typedef struct { + qcint stmt; + size_t localsp; + prog_section_function *function; +} qc_exec_stack; + +typedef struct qc_program_s { + char *filename; + + MEM_VECTOR_MAKE(prog_section_statement, code); + MEM_VECTOR_MAKE(prog_section_def, defs); + MEM_VECTOR_MAKE(prog_section_def, fields); + MEM_VECTOR_MAKE(prog_section_function, functions); + MEM_VECTOR_MAKE(char, strings); + MEM_VECTOR_MAKE(qcint, globals); + MEM_VECTOR_MAKE(qcint, entitydata); + + size_t tempstring_start; + size_t tempstring_at; + + qcint vmerror; + + MEM_VECTOR_MAKE(size_t, profile); + + MEM_VECTOR_MAKE(prog_builtin, builtins); + + /* size_t ip; */ + qcint entities; + size_t entityfields; + bool allowworldwrites; + + MEM_VECTOR_MAKE(qcint, localstack); + MEM_VECTOR_MAKE(qc_exec_stack, stack); + size_t statement; + + int argc; /* current arg count for debugging */ +} qc_program; + +qc_program* prog_load(const char *filename); +void prog_delete(qc_program *prog); + +bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps); + +char* prog_getstring (qc_program *prog, qcint str); +prog_section_def* prog_entfield (qc_program *prog, qcint off); +prog_section_def* prog_getdef (qc_program *prog, qcint off); +qcany* prog_getedict (qc_program *prog, qcint e); +qcint prog_tempstring(qc_program *prog, const char *_str); + +/*===================================================================*/ +/*======================= main.c commandline ========================*/ +/*===================================================================*/ + +#if 0 +/* Helpers to allow for a whole lot of flags. Otherwise we'd limit + * to 32 or 64 -f options... + */ +typedef struct { + size_t idx; /* index into an array of 32 bit words */ + uint8_t bit; /* index _into_ the 32 bit word, thus just uint8 */ +} longbit; +#define LONGBIT(bit) { ((bit)/32), ((bit)%32) } +#else +typedef uint32_t longbit; +#define LONGBIT(bit) (bit) +#endif + +/* Used to store the list of flags with names */ +typedef struct { + const char *name; + longbit bit; +} opt_flag_def; + +/*===================================================================*/ +/* list of -f flags, like -fdarkplaces-string-table-bug */ +enum { + DP_STRING_TABLE_BUG, + OMIT_NULLBYTES, + + NUM_F_FLAGS +}; +static const opt_flag_def opt_flag_list[] = { + { "darkplaces-string-table-bug", LONGBIT(DP_STRING_TABLE_BUG) }, + { "omit-nullbytes", LONGBIT(OMIT_NULLBYTES) } +}; +static const size_t opt_flag_list_count = sizeof(opt_flag_list) / sizeof(opt_flag_list[0]); + +enum { + WARN_UNUSED_VARIABLE, + + NUM_W_FLAGS +}; +static const opt_flag_def opt_warn_list[] = { + /* only contains single flags, no groups like 'all' */ + { "unused-variable", LONGBIT(WARN_UNUSED_VARIABLE) } +}; +static const size_t opt_warn_list_count = sizeof(opt_warn_list) / sizeof(opt_warn_list[0]); + +/* other options: */ +extern uint32_t opt_O; /* -Ox */ +extern const char *opt_output; /* -o file */ +extern int opt_standard; + +enum { + STD_DEF, + STD_QCC, + STD_FTE +}; + +/*===================================================================*/ +#define OPT_FLAG(i) (!! (opt_flags[(i)/32] & (1<< ((i)%32)))) +extern uint32_t opt_flags[1 + (NUM_F_FLAGS / 32)]; +#define OPT_WARN(i) (!! (opt_warn[(i)/32] & (1<< ((i)%32)))) +extern uint32_t opt_warn[1 + (NUM_W_FLAGS / 32)]; + #endif