/* ----------------------------------------------------------------------- * * * Copyright 1996-2012 The NASM Authors - All Rights Reserved * See the file AUTHORS included with the NASM distribution for * the specific copyright holders. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following * conditions are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * ----------------------------------------------------------------------- */ /* * nasm.h main header file for the Netwide Assembler: inter-module interface */ #ifndef NASM_NASM_H #define NASM_NASM_H #include "compiler.h" #include #include #include "nasmlib.h" #include "preproc.h" #include "insnsi.h" /* For enum opcode */ #include "directiv.h" /* For enum directive */ #include "opflags.h" #include "regs.h" #define NO_SEG -1L /* null segment value */ #define SEG_ABS 0x40000000L /* mask for far-absolute segments */ #ifndef FILENAME_MAX #define FILENAME_MAX 256 #endif #ifndef PREFIX_MAX #define PREFIX_MAX 10 #endif #ifndef POSTFIX_MAX #define POSTFIX_MAX 10 #endif #define IDLEN_MAX 4096 /* * Name pollution problems: on Digital UNIX pulls in some * strange hardware header file which sees fit to define R_SP. We * undefine it here so as not to break the enum below. */ #ifdef R_SP #undef R_SP #endif /* * We must declare the existence of this structure type up here, * since we have to reference it before we define it... */ struct ofmt; /* * Values for the `type' parameter to an output function. * * Exceptions are OUT_RELxADR, which denote an x-byte relocation * which will be a relative jump. For this we need to know the * distance in bytes from the start of the relocated record until * the end of the containing instruction. _This_ is what is stored * in the size part of the parameter, in this case. * * Also OUT_RESERVE denotes reservation of N bytes of BSS space, * and the contents of the "data" parameter is irrelevant. * * The "data" parameter for the output function points to a "int32_t", * containing the address in question, unless the type is * OUT_RAWDATA, in which case it points to an "uint8_t" * array. */ enum out_type { OUT_RAWDATA, /* Plain bytes */ OUT_ADDRESS, /* An address (symbol value) */ OUT_RESERVE, /* Reserved bytes (RESB et al) */ OUT_REL1ADR, /* 1-byte relative address */ OUT_REL2ADR, /* 2-byte relative address */ OUT_REL4ADR, /* 4-byte relative address */ OUT_REL8ADR, /* 8-byte relative address */ }; /* * A label-lookup function. */ typedef bool (*lfunc)(char *label, int32_t *segment, int64_t *offset); /* * And a label-definition function. The boolean parameter * `is_norm' states whether the label is a `normal' label (which * should affect the local-label system), or something odder like * an EQU or a segment-base symbol, which shouldn't. */ typedef void (*ldfunc)(char *label, int32_t segment, int64_t offset, char *special, bool is_norm, bool isextrn); void define_label(char *label, int32_t segment, int64_t offset, char *special, bool is_norm, bool isextrn); /* * List-file generators should look like this: */ typedef struct { /* * Called to initialize the listing file generator. Before this * is called, the other routines will silently do nothing when * called. The `char *' parameter is the file name to write the * listing to. */ void (*init)(char *fname, efunc error); /* * Called to clear stuff up and close the listing file. */ void (*cleanup)(void); /* * Called to output binary data. Parameters are: the offset; * the data; the data type. Data types are similar to the * output-format interface, only OUT_ADDRESS will _always_ be * displayed as if it's relocatable, so ensure that any non- * relocatable address has been converted to OUT_RAWDATA by * then. Note that OUT_RAWDATA,0 is a valid data type, and is a * dummy call used to give the listing generator an offset to * work with when doing things like uplevel(LIST_TIMES) or * uplevel(LIST_INCBIN). */ void (*output)(int32_t offset, const void *data, enum out_type type, uint64_t size); /* * Called to send a text line to the listing generator. The * `int' parameter is LIST_READ or LIST_MACRO depending on * whether the line came directly from an input file or is the * result of a multi-line macro expansion. */ void (*line)(int type, char *line); /* * Called to change one of the various levelled mechanisms in * the listing generator. LIST_INCLUDE and LIST_MACRO can be * used to increase the nesting level of include files and * macro expansions; LIST_TIMES and LIST_INCBIN switch on the * two binary-output-suppression mechanisms for large-scale * pseudo-instructions. * * LIST_MACRO_NOLIST is synonymous with LIST_MACRO except that * it indicates the beginning of the expansion of a `nolist' * macro, so anything under that level won't be expanded unless * it includes another file. */ void (*uplevel)(int type); /* * Reverse the effects of uplevel. */ void (*downlevel)(int type); /* * Called on a warning or error, with the error message. */ void (*error)(int severity, const char *pfx, const char *msg); } ListGen; /* * Token types returned by the scanner, in addition to ordinary * ASCII character values, and zero for end-of-string. */ enum token_type { /* token types, other than chars */ TOKEN_INVALID = -1, /* a placeholder value */ TOKEN_EOS = 0, /* end of string */ TOKEN_EQ = '=', TOKEN_GT = '>', TOKEN_LT = '<', /* aliases */ TOKEN_ID = 256, /* identifier */ TOKEN_NUM, /* numeric constant */ TOKEN_ERRNUM, /* malformed numeric constant */ TOKEN_STR, /* string constant */ TOKEN_ERRSTR, /* unterminated string constant */ TOKEN_FLOAT, /* floating-point constant */ TOKEN_REG, /* register name */ TOKEN_INSN, /* instruction name */ TOKEN_HERE, /* $ */ TOKEN_BASE, /* $$ */ TOKEN_SPECIAL, /* BYTE, WORD, DWORD, QWORD, FAR, NEAR, etc */ TOKEN_PREFIX, /* A32, O16, LOCK, REPNZ, TIMES, etc */ TOKEN_SHL, /* << */ TOKEN_SHR, /* >> */ TOKEN_SDIV, /* // */ TOKEN_SMOD, /* %% */ TOKEN_GE, /* >= */ TOKEN_LE, /* <= */ TOKEN_NE, /* <> (!= is same as <>) */ TOKEN_DBL_AND, /* && */ TOKEN_DBL_OR, /* || */ TOKEN_DBL_XOR, /* ^^ */ TOKEN_SEG, /* SEG */ TOKEN_WRT, /* WRT */ TOKEN_FLOATIZE, /* __floatX__ */ TOKEN_STRFUNC, /* __utf16__, __utf32__ */ }; enum floatize { FLOAT_8, FLOAT_16, FLOAT_32, FLOAT_64, FLOAT_80M, FLOAT_80E, FLOAT_128L, FLOAT_128H, }; /* Must match the list in string_transform(), in strfunc.c */ enum strfunc { STRFUNC_UTF16, STRFUNC_UTF32, }; size_t string_transform(char *, size_t, char **, enum strfunc); /* * The expression evaluator must be passed a scanner function; a * standard scanner is provided as part of nasmlib.c. The * preprocessor will use a different one. Scanners, and the * token-value structures they return, look like this. * * The return value from the scanner is always a copy of the * `t_type' field in the structure. */ struct tokenval { char *t_charptr; int64_t t_integer; int64_t t_inttwo; enum token_type t_type; }; typedef int (*scanner)(void *private_data, struct tokenval *tv); struct location { int64_t offset; int32_t segment; int known; }; /* * Expression-evaluator datatype. Expressions, within the * evaluator, are stored as an array of these beasts, terminated by * a record with type==0. Mostly, it's a vector type: each type * denotes some kind of a component, and the value denotes the * multiple of that component present in the expression. The * exception is the WRT type, whose `value' field denotes the * segment to which the expression is relative. These segments will * be segment-base types, i.e. either odd segment values or SEG_ABS * types. So it is still valid to assume that anything with a * `value' field of zero is insignificant. */ typedef struct { int32_t type; /* a register, or EXPR_xxx */ int64_t value; /* must be >= 32 bits */ } expr; /* * Library routines to manipulate expression data types. */ int is_reloc(expr *vect); int is_simple(expr *vect); int is_really_simple(expr *vect); int is_unknown(expr *vect); int is_just_unknown(expr *vect); int64_t reloc_value(expr *vect); int32_t reloc_seg(expr *vect); int32_t reloc_wrt(expr *vect); /* * The evaluator can also return hints about which of two registers * used in an expression should be the base register. See also the * `operand' structure. */ struct eval_hints { int64_t base; int type; }; /* * The actual expression evaluator function looks like this. When * called, it expects the first token of its expression to already * be in `*tv'; if it is not, set tv->t_type to TOKEN_INVALID and * it will start by calling the scanner. * * If a forward reference happens during evaluation, the evaluator * must set `*fwref' to true if `fwref' is non-NULL. * * `critical' is non-zero if the expression may not contain forward * references. The evaluator will report its own error if this * occurs; if `critical' is 1, the error will be "symbol not * defined before use", whereas if `critical' is 2, the error will * be "symbol undefined". * * If `critical' has bit 8 set (in addition to its main value: 0x101 * and 0x102 correspond to 1 and 2) then an extended expression * syntax is recognised, in which relational operators such as =, < * and >= are accepted, as well as low-precedence logical operators * &&, ^^ and ||. * * If `hints' is non-NULL, it gets filled in with some hints as to * the base register in complex effective addresses. */ #define CRITICAL 0x100 typedef expr *(*evalfunc)(scanner sc, void *scprivate, struct tokenval *tv, int *fwref, int critical, efunc error, struct eval_hints *hints); /* * Special values for expr->type. * These come after EXPR_REG_END as defined in regs.h. */ #define EXPR_UNKNOWN (EXPR_REG_END+1) /* forward references */ #define EXPR_SIMPLE (EXPR_REG_END+2) #define EXPR_WRT (EXPR_REG_END+3) #define EXPR_SEGBASE (EXPR_REG_END+4) /* * Linked list of strings */ typedef struct string_list { struct string_list *next; char str[1]; } StrList; /* * preprocessors ought to look like this: */ struct preproc_ops { /* * Called at the start of a pass; given a file name, the number * of the pass, an error reporting function, an evaluator * function, and a listing generator to talk to. */ void (*reset)(char *file, int pass, ListGen *listgen, StrList **deplist); /* * Called to fetch a line of preprocessed source. The line * returned has been malloc'ed, and so should be freed after * use. */ char *(*getline)(void); /* Called at the end of a pass */ void (*cleanup)(int pass); }; extern struct preproc_ops nasmpp; /* * Some lexical properties of the NASM source language, included * here because they are shared between the parser and preprocessor. */ /* * isidstart matches any character that may start an identifier, and isidchar * matches any character that may appear at places other than the start of an * identifier. E.g. a period may only appear at the start of an identifier * (for local labels), whereas a number may appear anywhere *but* at the * start. */ #define isidstart(c) (nasm_isalpha(c) || \ (c) == '_' || \ (c) == '.' || \ (c) == '?' || \ (c) == '@') #define isidchar(c) (isidstart(c) || \ nasm_isdigit(c) || \ (c) == '$' || \ (c) == '#' || \ (c) == '~') /* Ditto for numeric constants. */ #define isnumstart(c) (nasm_isdigit(c) || (c) == '$') #define isnumchar(c) (nasm_isalnum(c) || (c) == '_') /* * Data-type flags that get passed to listing-file routines. */ enum { LIST_READ, LIST_MACRO, LIST_MACRO_NOLIST, LIST_INCLUDE, LIST_INCBIN, LIST_TIMES }; /* * ----------------------------------------------------------- * Format of the `insn' structure returned from `parser.c' and * passed into `assemble.c' * ----------------------------------------------------------- */ /* Verify value to be a valid register */ static inline bool is_register(int reg) { return reg >= EXPR_REG_START && reg < REG_ENUM_LIMIT; } enum ccode { /* condition code names */ C_A, C_AE, C_B, C_BE, C_C, C_E, C_G, C_GE, C_L, C_LE, C_NA, C_NAE, C_NB, C_NBE, C_NC, C_NE, C_NG, C_NGE, C_NL, C_NLE, C_NO, C_NP, C_NS, C_NZ, C_O, C_P, C_PE, C_PO, C_S, C_Z, C_none = -1 }; /* * REX flags */ #define REX_REAL 0x4f /* Actual REX prefix bits */ #define REX_B 0x01 /* ModRM r/m extension */ #define REX_X 0x02 /* SIB index extension */ #define REX_R 0x04 /* ModRM reg extension */ #define REX_W 0x08 /* 64-bit operand size */ #define REX_L 0x20 /* Use LOCK prefix instead of REX.R */ #define REX_P 0x40 /* REX prefix present/required */ #define REX_H 0x80 /* High register present, REX forbidden */ #define REX_V 0x0100 /* Instruction uses VEX/XOP instead of REX */ #define REX_NH 0x0200 /* Instruction which doesn't use high regs */ /* * REX_V "classes" (prefixes which behave like VEX) */ enum vex_class { RV_VEX = 0, /* C4/C5 */ RV_XOP = 1 /* 8F */ }; /* * Note that because segment registers may be used as instruction * prefixes, we must ensure the enumerations for prefixes and * register names do not overlap. */ enum prefixes { /* instruction prefixes */ P_none = 0, PREFIX_ENUM_START = REG_ENUM_LIMIT, P_A16 = PREFIX_ENUM_START, P_A32, P_A64, P_ASP, P_LOCK, P_O16, P_O32, P_O64, P_OSP, P_REP, P_REPE, P_REPNE, P_REPNZ, P_REPZ, P_TIMES, P_WAIT, P_XACQUIRE, P_XRELEASE, PREFIX_ENUM_LIMIT }; enum extop_type { /* extended operand types */ EOT_NOTHING, EOT_DB_STRING, /* Byte string */ EOT_DB_STRING_FREE, /* Byte string which should be nasm_free'd*/ EOT_DB_NUMBER, /* Integer */ }; enum ea_flags { /* special EA flags */ EAF_BYTEOFFS = 1, /* force offset part to byte size */ EAF_WORDOFFS = 2, /* force offset part to [d]word size */ EAF_TIMESTWO = 4, /* really do EAX*2 not EAX+EAX */ EAF_REL = 8, /* IP-relative addressing */ EAF_ABS = 16, /* non-IP-relative addressing */ EAF_FSGS = 32 /* fs/gs segment override present */ }; enum eval_hint { /* values for `hinttype' */ EAH_NOHINT = 0, /* no hint at all - our discretion */ EAH_MAKEBASE = 1, /* try to make given reg the base */ EAH_NOTBASE = 2 /* try _not_ to make reg the base */ }; typedef struct operand { /* operand to an instruction */ opflags_t type; /* type of operand */ int disp_size; /* 0 means default; 16; 32; 64 */ enum reg_enum basereg; enum reg_enum indexreg; /* address registers */ int scale; /* index scale */ int hintbase; enum eval_hint hinttype; /* hint as to real base register */ int32_t segment; /* immediate segment, if needed */ int64_t offset; /* any immediate number */ int32_t wrt; /* segment base it's relative to */ int eaflags; /* special EA flags */ int opflags; /* see OPFLAG_* defines below */ } operand; #define OPFLAG_FORWARD 1 /* operand is a forward reference */ #define OPFLAG_EXTERN 2 /* operand is an external reference */ #define OPFLAG_UNKNOWN 4 /* operand is an unknown reference * (always a forward reference also) */ typedef struct extop { /* extended operand */ struct extop *next; /* linked list */ char *stringval; /* if it's a string, then here it is */ size_t stringlen; /* ... and here's how long it is */ int64_t offset; /* ... it's given here ... */ int32_t segment; /* if it's a number/address, then... */ int32_t wrt; /* ... and here */ enum extop_type type; /* defined above */ } extop; enum ea_type { EA_INVALID, /* Not a valid EA at all */ EA_SCALAR, /* Scalar EA */ EA_XMMVSIB, /* XMM vector EA */ EA_YMMVSIB, /* XMM vector EA */ }; /* * Prefix positions: each type of prefix goes in a specific slot. * This affects the final ordering of the assembled output, which * shouldn't matter to the processor, but if you have stylistic * preferences, you can change this. REX prefixes are handled * differently for the time being. * * LOCK and REP used to be one slot; this is no longer the case since * the introduction of HLE. */ enum prefix_pos { PPS_WAIT, /* WAIT (technically not a prefix!) */ PPS_REP, /* REP/HLE prefix */ PPS_LOCK, /* LOCK prefix */ PPS_SEG, /* Segment override prefix */ PPS_OSIZE, /* Operand size prefix */ PPS_ASIZE, /* Address size prefix */ MAXPREFIX /* Total number of prefix slots */ }; /* If you need to change this, also change it in insns.pl */ #define MAX_OPERANDS 5 typedef struct insn { /* an instruction itself */ char *label; /* the label defined, or NULL */ int prefixes[MAXPREFIX]; /* instruction prefixes, if any */ enum opcode opcode; /* the opcode - not just the string */ enum ccode condition; /* the condition code, if Jcc/SETcc */ int operands; /* how many operands? 0-3 (more if db et al) */ int addr_size; /* address size */ operand oprs[MAX_OPERANDS]; /* the operands, defined as above */ extop *eops; /* extended operands */ int eops_float; /* true if DD and floating */ int32_t times; /* repeat count (TIMES prefix) */ bool forw_ref; /* is there a forward reference? */ int rex; /* Special REX Prefix */ int vexreg; /* Register encoded in VEX prefix */ int vex_cm; /* Class and M field for VEX prefix */ int vex_wlp; /* W, P and L information for VEX prefix */ } insn; enum geninfo { GI_SWITCH }; /* * The data structure defining an output format driver, and the * interfaces to the functions therein. */ struct ofmt { /* * This is a short (one-liner) description of the type of * output generated by the driver. */ const char *fullname; /* * This is a single keyword used to select the driver. */ const char *shortname; /* * Output format flags. */ #define OFMT_TEXT 1 /* Text file format */ unsigned int flags; /* * this is a pointer to the first element of the debug information */ struct dfmt **debug_formats; /* * and a pointer to the element that is being used * note: this is set to the default at compile time and changed if the * -F option is selected. If developing a set of new debug formats for * an output format, be sure to set this to whatever default you want * */ const struct dfmt *current_dfmt; /* * This, if non-NULL, is a NULL-terminated list of `char *'s * pointing to extra standard macros supplied by the object * format (e.g. a sensible initial default value of __SECT__, * and user-level equivalents for any format-specific * directives). */ macros_t *stdmac; /* * This procedure is called at the start of an output session to set * up internal parameters. */ void (*init)(void); /* * This procedure is called to pass generic information to the * object file. The first parameter gives the information type * (currently only command line switches) * and the second parameter gives the value. This function returns * 1 if recognized, 0 if unrecognized */ int (*setinfo)(enum geninfo type, char **string); /* * This procedure is called by assemble() to write actual * generated code or data to the object file. Typically it * doesn't have to actually _write_ it, just store it for * later. * * The `type' argument specifies the type of output data, and * usually the size as well: its contents are described below. */ void (*output)(int32_t segto, const void *data, enum out_type type, uint64_t size, int32_t segment, int32_t wrt); /* * This procedure is called once for every symbol defined in * the module being assembled. It gives the name and value of * the symbol, in NASM's terms, and indicates whether it has * been declared to be global. Note that the parameter "name", * when passed, will point to a piece of static storage * allocated inside the label manager - it's safe to keep using * that pointer, because the label manager doesn't clean up * until after the output driver has. * * Values of `is_global' are: 0 means the symbol is local; 1 * means the symbol is global; 2 means the symbol is common (in * which case `offset' holds the _size_ of the variable). * Anything else is available for the output driver to use * internally. * * This routine explicitly _is_ allowed to call the label * manager to define further symbols, if it wants to, even * though it's been called _from_ the label manager. That much * re-entrancy is guaranteed in the label manager. However, the * label manager will in turn call this routine, so it should * be prepared to be re-entrant itself. * * The `special' parameter contains special information passed * through from the command that defined the label: it may have * been an EXTERN, a COMMON or a GLOBAL. The distinction should * be obvious to the output format from the other parameters. */ void (*symdef)(char *name, int32_t segment, int64_t offset, int is_global, char *special); /* * This procedure is called when the source code requests a * segment change. It should return the corresponding segment * _number_ for the name, or NO_SEG if the name is not a valid * segment name. * * It may also be called with NULL, in which case it is to * return the _default_ section number for starting assembly in. * * It is allowed to modify the string it is given a pointer to. * * It is also allowed to specify a default instruction size for * the segment, by setting `*bits' to 16 or 32. Or, if it * doesn't wish to define a default, it can leave `bits' alone. */ int32_t (*section)(char *name, int pass, int *bits); /* * This procedure is called to modify section alignment, * note there is a trick, the alignment can only increase */ void (*sectalign)(int32_t seg, unsigned int value); /* * This procedure is called to modify the segment base values * returned from the SEG operator. It is given a segment base * value (i.e. a segment value with the low bit set), and is * required to produce in return a segment value which may be * different. It can map segment bases to absolute numbers by * means of returning SEG_ABS types. * * It should return NO_SEG if the segment base cannot be * determined; the evaluator (which calls this routine) is * responsible for throwing an error condition if that occurs * in pass two or in a critical expression. */ int32_t (*segbase)(int32_t segment); /* * This procedure is called to allow the output driver to * process its own specific directives. When called, it has the * directive word in `directive' and the parameter string in * `value'. It is called in both assembly passes, and `pass' * will be either 1 or 2. * * This procedure should return zero if it does not _recognise_ * the directive, so that the main program can report an error. * If it recognises the directive but then has its own errors, * it should report them itself and then return non-zero. It * should also return non-zero if it correctly processes the * directive. */ int (*directive)(enum directives directive, char *value, int pass); /* * This procedure is called before anything else - even before * the "init" routine - and is passed the name of the input * file from which this output file is being generated. It * should return its preferred name for the output file in * `outname', if outname[0] is not '\0', and do nothing to * `outname' otherwise. Since it is called before the driver is * properly initialized, it has to be passed its error handler * separately. * * This procedure may also take its own copy of the input file * name for use in writing the output file: it is _guaranteed_ * that it will be called before the "init" routine. * * The parameter `outname' points to an area of storage * guaranteed to be at least FILENAME_MAX in size. */ void (*filename)(char *inname, char *outname); /* * This procedure is called after assembly finishes, to allow * the output driver to clean itself up and free its memory. * Typically, it will also be the point at which the object * file actually gets _written_. * * One thing the cleanup routine should always do is to close * the output file pointer. */ void (*cleanup)(int debuginfo); }; /* * Output format driver alias */ struct ofmt_alias { const char *shortname; const char *fullname; struct ofmt *ofmt; }; extern struct ofmt *ofmt; extern FILE *ofile; /* * ------------------------------------------------------------ * The data structure defining a debug format driver, and the * interfaces to the functions therein. * ------------------------------------------------------------ */ struct dfmt { /* * This is a short (one-liner) description of the type of * output generated by the driver. */ const char *fullname; /* * This is a single keyword used to select the driver. */ const char *shortname; /* * init - called initially to set up local pointer to object format. */ void (*init)(void); /* * linenum - called any time there is output with a change of * line number or file. */ void (*linenum)(const char *filename, int32_t linenumber, int32_t segto); /* * debug_deflabel - called whenever a label is defined. Parameters * are the same as to 'symdef()' in the output format. This function * would be called before the output format version. */ void (*debug_deflabel)(char *name, int32_t segment, int64_t offset, int is_global, char *special); /* * debug_directive - called whenever a DEBUG directive other than 'LINE' * is encountered. 'directive' contains the first parameter to the * DEBUG directive, and params contains the rest. For example, * 'DEBUG VAR _somevar:int' would translate to a call to this * function with 'directive' equal to "VAR" and 'params' equal to * "_somevar:int". */ void (*debug_directive)(const char *directive, const char *params); /* * typevalue - called whenever the assembler wishes to register a type * for the last defined label. This routine MUST detect if a type was * already registered and not re-register it. */ void (*debug_typevalue)(int32_t type); /* * debug_output - called whenever output is required * 'type' is the type of info required, and this is format-specific */ void (*debug_output)(int type, void *param); /* * cleanup - called after processing of file is complete */ void (*cleanup)(void); }; extern const struct dfmt *dfmt; /* * The type definition macros * for debugging * * low 3 bits: reserved * next 5 bits: type * next 24 bits: number of elements for arrays (0 for labels) */ #define TY_UNKNOWN 0x00 #define TY_LABEL 0x08 #define TY_BYTE 0x10 #define TY_WORD 0x18 #define TY_DWORD 0x20 #define TY_FLOAT 0x28 #define TY_QWORD 0x30 #define TY_TBYTE 0x38 #define TY_OWORD 0x40 #define TY_YWORD 0x48 #define TY_COMMON 0xE0 #define TY_SEG 0xE8 #define TY_EXTERN 0xF0 #define TY_EQU 0xF8 #define TYM_TYPE(x) ((x) & 0xF8) #define TYM_ELEMENTS(x) (((x) & 0xFFFFFF00) >> 8) #define TYS_ELEMENTS(x) ((x) << 8) enum special_tokens { SPECIAL_ENUM_START = PREFIX_ENUM_LIMIT, S_ABS = SPECIAL_ENUM_START, S_BYTE, S_DWORD, S_FAR, S_LONG, S_NEAR, S_NOSPLIT, S_OWORD, S_QWORD, S_REL, S_SHORT, S_STRICT, S_TO, S_TWORD, S_WORD, S_YWORD, SPECIAL_ENUM_LIMIT }; /* * Global modes */ /* * This declaration passes the "pass" number to all other modules * "pass0" assumes the values: 0, 0, ..., 0, 1, 2 * where 0 = optimizing pass * 1 = pass 1 * 2 = pass 2 */ extern int pass0; extern int passn; /* Actual pass number */ extern bool tasm_compatible_mode; extern int optimizing; extern int globalbits; /* 16, 32 or 64-bit mode */ extern int globalrel; /* default to relative addressing? */ extern int maxbits; /* max bits supported by output */ /* * NASM version strings, defined in ver.c */ extern const char nasm_version[]; extern const char nasm_date[]; extern const char nasm_compile_options[]; extern const char nasm_comment[]; extern const char nasm_signature[]; #endif