1 /* ----------------------------------------------------------------------- *
3 * Copyright 1996-2009 The NASM Authors - All Rights Reserved
4 * See the file AUTHORS included with the NASM distribution for
5 * the specific copyright holders.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
19 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
20 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 * ----------------------------------------------------------------------- */
35 * preproc.c macro preprocessor for the Netwide Assembler
38 /* Typical flow of text through preproc
40 * pp_getline gets tokenized lines, either
42 * from a macro expansion
46 * read_line gets raw text from stdmacpos, or predef, or current input file
47 * tokenize converts to tokens
50 * expand_mmac_params is used to expand %1 etc., unless a macro is being
51 * defined or a false conditional is being processed
52 * (%0, %1, %+1, %-1, %%foo
54 * do_directive checks for directives
56 * expand_smacro is used to expand single line macros
58 * expand_mmacro is used to expand multi-line macros
60 * detoken is used to convert the line back to text
83 typedef struct SMacro SMacro
;
84 typedef struct MMacro MMacro
;
85 typedef struct MMacroInvocation MMacroInvocation
;
86 typedef struct Context Context
;
87 typedef struct Token Token
;
88 typedef struct Blocks Blocks
;
89 typedef struct Line Line
;
90 typedef struct Include Include
;
91 typedef struct Cond Cond
;
92 typedef struct IncPath IncPath
;
95 * Note on the storage of both SMacro and MMacros: the hash table
96 * indexes them case-insensitively, and we then have to go through a
97 * linked list of potential case aliases (and, for MMacros, parameter
98 * ranges); this is to preserve the matching semantics of the earlier
99 * code. If the number of case aliases for a specific macro is a
100 * performance issue, you may want to reconsider your coding style.
104 * Store the definition of a single-line macro.
116 * Store the definition of a multi-line macro. This is also used to
117 * store the interiors of `%rep...%endrep' blocks, which are
118 * effectively self-re-invoking multi-line macros which simply
119 * don't have a name or bother to appear in the hash tables. %rep
120 * blocks are signified by having a NULL `name' field.
122 * In a MMacro describing a `%rep' block, the `in_progress' field
123 * isn't merely boolean, but gives the number of repeats left to
126 * The `next' field is used for storing MMacros in hash tables; the
127 * `next_active' field is for stacking them on istk entries.
129 * When a MMacro is being expanded, `params', `iline', `nparam',
130 * `paramlen', `rotate' and `unique' are local to the invocation.
134 MMacroInvocation
*prev
; /* previous invocation */
136 int nparam_min
, nparam_max
;
138 bool plus
; /* is the last parameter greedy? */
139 bool nolist
; /* is this macro listing-inhibited? */
140 int64_t in_progress
; /* is this macro currently being expanded? */
141 int64_t max_depth
; /* maximum number of recursive expansions allowed */
142 Token
*dlist
; /* All defaults as one list */
143 Token
**defaults
; /* Parameter default pointers */
144 int ndefs
; /* number of default parameters */
148 MMacro
*rep_nest
; /* used for nesting %rep */
149 Token
**params
; /* actual parameters */
150 Token
*iline
; /* invocation line */
151 unsigned int nparam
, rotate
;
154 int lineno
; /* Current line number on expansion */
158 /* Store the definition of a multi-line macro, as defined in a
159 * previous recursive macro expansion.
161 struct MMacroInvocation
{
162 MMacroInvocation
*prev
; /* previous invocation */
163 Token
**params
; /* actual parameters */
164 Token
*iline
; /* invocation line */
165 unsigned int nparam
, rotate
;
172 * The context stack is composed of a linked list of these.
177 struct hash_table localmac
;
182 * This is the internal form which we break input lines up into.
183 * Typically stored in linked lists.
185 * Note that `type' serves a double meaning: TOK_SMAC_PARAM is not
186 * necessarily used as-is, but is intended to denote the number of
187 * the substituted parameter. So in the definition
189 * %define a(x,y) ( (x) & ~(y) )
191 * the token representing `x' will have its type changed to
192 * TOK_SMAC_PARAM, but the one representing `y' will be
195 * TOK_INTERNAL_STRING is a dirty hack: it's a single string token
196 * which doesn't need quotes around it. Used in the pre-include
197 * mechanism as an alternative to trying to find a sensible type of
198 * quote to use on the filename we were passed.
201 TOK_NONE
= 0, TOK_WHITESPACE
, TOK_COMMENT
, TOK_ID
,
202 TOK_PREPROC_ID
, TOK_STRING
,
203 TOK_NUMBER
, TOK_FLOAT
, TOK_SMAC_END
, TOK_OTHER
,
205 TOK_PREPROC_Q
, TOK_PREPROC_QQ
,
207 TOK_INDIRECT
, /* %[...] */
208 TOK_SMAC_PARAM
, /* MUST BE LAST IN THE LIST!!! */
209 TOK_MAX
= INT_MAX
/* Keep compiler from reducing the range */
216 SMacro
*mac
; /* associated macro for TOK_SMAC_END */
217 size_t len
; /* scratch length field */
218 } a
; /* Auxiliary data */
219 enum pp_token_type type
;
223 * Multi-line macro definitions are stored as a linked list of
224 * these, which is essentially a container to allow several linked
227 * Note that in this module, linked lists are treated as stacks
228 * wherever possible. For this reason, Lines are _pushed_ on to the
229 * `expansion' field in MMacro structures, so that the linked list,
230 * if walked, would give the macro lines in reverse order; this
231 * means that we can walk the list when expanding a macro, and thus
232 * push the lines on to the `expansion' field in _istk_ in reverse
233 * order (so that when popped back off they are in the right
234 * order). It may seem cockeyed, and it relies on my design having
235 * an even number of steps in, but it works...
237 * Some of these structures, rather than being actual lines, are
238 * markers delimiting the end of the expansion of a given macro.
239 * This is for use in the cycle-tracking and %rep-handling code.
240 * Such structures have `finishes' non-NULL, and `first' NULL. All
241 * others have `finishes' NULL, but `first' may still be NULL if
251 * To handle an arbitrary level of file inclusion, we maintain a
252 * stack (ie linked list) of these things.
261 MMacro
*mstk
; /* stack of active macros/reps */
265 * Include search path. This is simply a list of strings which get
266 * prepended, in turn, to the name of an include file, in an
267 * attempt to find the file if it's not in the current directory.
275 * Conditional assembly: we maintain a separate stack of these for
276 * each level of file inclusion. (The only reason we keep the
277 * stacks separate is to ensure that a stray `%endif' in a file
278 * included from within the true branch of a `%if' won't terminate
279 * it and cause confusion: instead, rightly, it'll cause an error.)
287 * These states are for use just after %if or %elif: IF_TRUE
288 * means the condition has evaluated to truth so we are
289 * currently emitting, whereas IF_FALSE means we are not
290 * currently emitting but will start doing so if a %else comes
291 * up. In these states, all directives are admissible: %elif,
292 * %else and %endif. (And of course %if.)
294 COND_IF_TRUE
, COND_IF_FALSE
,
296 * These states come up after a %else: ELSE_TRUE means we're
297 * emitting, and ELSE_FALSE means we're not. In ELSE_* states,
298 * any %elif or %else will cause an error.
300 COND_ELSE_TRUE
, COND_ELSE_FALSE
,
302 * These states mean that we're not emitting now, and also that
303 * nothing until %endif will be emitted at all. COND_DONE is
304 * used when we've had our moment of emission
305 * and have now started seeing %elifs. COND_NEVER is used when
306 * the condition construct in question is contained within a
307 * non-emitting branch of a larger condition construct,
308 * or if there is an error.
310 COND_DONE
, COND_NEVER
312 #define emitting(x) ( (x) == COND_IF_TRUE || (x) == COND_ELSE_TRUE )
315 * These defines are used as the possible return values for do_directive
317 #define NO_DIRECTIVE_FOUND 0
318 #define DIRECTIVE_FOUND 1
321 * Condition codes. Note that we use c_ prefix not C_ because C_ is
322 * used in nasm.h for the "real" condition codes. At _this_ level,
323 * we treat CXZ and ECXZ as condition codes, albeit non-invertible
324 * ones, so we need a different enum...
326 static const char * const conditions
[] = {
327 "a", "ae", "b", "be", "c", "cxz", "e", "ecxz", "g", "ge", "l", "le",
328 "na", "nae", "nb", "nbe", "nc", "ne", "ng", "nge", "nl", "nle", "no",
329 "np", "ns", "nz", "o", "p", "pe", "po", "rcxz", "s", "z"
332 c_A
, c_AE
, c_B
, c_BE
, c_C
, c_CXZ
, c_E
, c_ECXZ
, c_G
, c_GE
, c_L
, c_LE
,
333 c_NA
, c_NAE
, c_NB
, c_NBE
, c_NC
, c_NE
, c_NG
, c_NGE
, c_NL
, c_NLE
, c_NO
,
334 c_NP
, c_NS
, c_NZ
, c_O
, c_P
, c_PE
, c_PO
, c_RCXZ
, c_S
, c_Z
,
337 static const enum pp_conds inverse_ccs
[] = {
338 c_NA
, c_NAE
, c_NB
, c_NBE
, c_NC
, -1, c_NE
, -1, c_NG
, c_NGE
, c_NL
, c_NLE
,
339 c_A
, c_AE
, c_B
, c_BE
, c_C
, c_E
, c_G
, c_GE
, c_L
, c_LE
, c_O
, c_P
, c_S
,
340 c_Z
, c_NO
, c_NP
, c_PO
, c_PE
, -1, c_NS
, c_NZ
346 /* If this is a an IF, ELIF, ELSE or ENDIF keyword */
347 static int is_condition(enum preproc_token arg
)
349 return PP_IS_COND(arg
) || (arg
== PP_ELSE
) || (arg
== PP_ENDIF
);
352 /* For TASM compatibility we need to be able to recognise TASM compatible
353 * conditional compilation directives. Using the NASM pre-processor does
354 * not work, so we look for them specifically from the following list and
355 * then jam in the equivalent NASM directive into the input stream.
359 TM_ARG
, TM_ELIF
, TM_ELSE
, TM_ENDIF
, TM_IF
, TM_IFDEF
, TM_IFDIFI
,
360 TM_IFNDEF
, TM_INCLUDE
, TM_LOCAL
363 static const char * const tasm_directives
[] = {
364 "arg", "elif", "else", "endif", "if", "ifdef", "ifdifi",
365 "ifndef", "include", "local"
368 static int StackSize
= 4;
369 static char *StackPointer
= "ebp";
370 static int ArgOffset
= 8;
371 static int LocalOffset
= 0;
373 static Context
*cstk
;
374 static Include
*istk
;
375 static IncPath
*ipath
= NULL
;
377 static efunc _error
; /* Pointer to client-provided error reporting function */
378 static evalfunc evaluate
;
380 static int pass
; /* HACK: pass 0 = generate dependencies only */
381 static StrList
**dephead
, **deptail
; /* Dependency list */
383 static uint64_t unique
; /* unique identifier numbers */
385 static Line
*predef
= NULL
;
386 static bool do_predef
;
388 static ListGen
*list
;
391 * The current set of multi-line macros we have defined.
393 static struct hash_table mmacros
;
396 * The current set of single-line macros we have defined.
398 static struct hash_table smacros
;
401 * The multi-line macro we are currently defining, or the %rep
402 * block we are currently reading, if any.
404 static MMacro
*defining
;
406 static uint64_t nested_mac_count
;
407 static uint64_t nested_rep_count
;
410 * The number of macro parameters to allocate space for at a time.
412 #define PARAM_DELTA 16
415 * The standard macro set: defined in macros.c in the array nasm_stdmac.
416 * This gives our position in the macro set, when we're processing it.
418 static macros_t
*stdmacpos
;
421 * The extra standard macros that come from the object format, if
424 static macros_t
*extrastdmac
= NULL
;
425 static bool any_extrastdmac
;
428 * Tokens are allocated in blocks to improve speed
430 #define TOKEN_BLOCKSIZE 4096
431 static Token
*freeTokens
= NULL
;
437 static Blocks blocks
= { NULL
, NULL
};
440 * Forward declarations.
442 static Token
*expand_mmac_params(Token
* tline
);
443 static Token
*expand_smacro(Token
* tline
);
444 static Token
*expand_id(Token
* tline
);
445 static Context
*get_ctx(const char *name
, const char **namep
,
447 static void make_tok_num(Token
* tok
, int64_t val
);
448 static void error(int severity
, const char *fmt
, ...);
449 static void error_precond(int severity
, const char *fmt
, ...);
450 static void *new_Block(size_t size
);
451 static void delete_Blocks(void);
452 static Token
*new_Token(Token
* next
, enum pp_token_type type
,
453 const char *text
, int txtlen
);
454 static Token
*delete_Token(Token
* t
);
457 * Macros for safe checking of token pointers, avoid *(NULL)
459 #define tok_type_(x,t) ((x) && (x)->type == (t))
460 #define skip_white_(x) if (tok_type_((x), TOK_WHITESPACE)) (x)=(x)->next
461 #define tok_is_(x,v) (tok_type_((x), TOK_OTHER) && !strcmp((x)->text,(v)))
462 #define tok_isnt_(x,v) ((x) && ((x)->type!=TOK_OTHER || strcmp((x)->text,(v))))
464 /* Handle TASM specific directives, which do not contain a % in
465 * front of them. We do it here because I could not find any other
466 * place to do it for the moment, and it is a hack (ideally it would
467 * be nice to be able to use the NASM pre-processor to do it).
469 static char *check_tasm_directive(char *line
)
471 int32_t i
, j
, k
, m
, len
;
472 char *p
= line
, *oldline
, oldchar
;
474 /* Skip whitespace */
475 while (nasm_isspace(*p
) && *p
!= 0)
478 /* Binary search for the directive name */
480 j
= elements(tasm_directives
);
482 while (!nasm_isspace(p
[len
]) && p
[len
] != 0)
489 m
= nasm_stricmp(p
, tasm_directives
[k
]);
491 /* We have found a directive, so jam a % in front of it
492 * so that NASM will then recognise it as one if it's own.
497 line
= nasm_malloc(len
+ 2);
499 if (k
== TM_IFDIFI
) {
501 * NASM does not recognise IFDIFI, so we convert
502 * it to %if 0. This is not used in NASM
503 * compatible code, but does need to parse for the
504 * TASM macro package.
506 strcpy(line
+ 1, "if 0");
508 memcpy(line
+ 1, p
, len
+ 1);
523 * The pre-preprocessing stage... This function translates line
524 * number indications as they emerge from GNU cpp (`# lineno "file"
525 * flags') into NASM preprocessor line number indications (`%line
528 static char *prepreproc(char *line
)
531 char *fname
, *oldline
;
533 if (line
[0] == '#' && line
[1] == ' ') {
536 lineno
= atoi(fname
);
537 fname
+= strspn(fname
, "0123456789 ");
540 fnlen
= strcspn(fname
, "\"");
541 line
= nasm_malloc(20 + fnlen
);
542 snprintf(line
, 20 + fnlen
, "%%line %d %.*s", lineno
, fnlen
, fname
);
545 if (tasm_compatible_mode
)
546 return check_tasm_directive(line
);
551 * Free a linked list of tokens.
553 static void free_tlist(Token
* list
)
556 list
= delete_Token(list
);
561 * Free a linked list of lines.
563 static void free_llist(Line
* list
)
569 free_tlist(l
->first
);
577 static void free_mmacro(MMacro
* m
)
580 free_tlist(m
->dlist
);
581 nasm_free(m
->defaults
);
582 free_llist(m
->expansion
);
587 * Free all currently defined macros, and free the hash tables
589 static void free_smacro_table(struct hash_table
*smt
)
593 struct hash_tbl_node
*it
= NULL
;
595 while ((s
= hash_iterate(smt
, &it
, &key
)) != NULL
) {
596 nasm_free((void *)key
);
598 SMacro
*ns
= s
->next
;
600 free_tlist(s
->expansion
);
608 static void free_mmacro_table(struct hash_table
*mmt
)
612 struct hash_tbl_node
*it
= NULL
;
615 while ((m
= hash_iterate(mmt
, &it
, &key
)) != NULL
) {
616 nasm_free((void *)key
);
618 MMacro
*nm
= m
->next
;
626 static void free_macros(void)
628 free_smacro_table(&smacros
);
629 free_mmacro_table(&mmacros
);
633 * Initialize the hash tables
635 static void init_macros(void)
637 hash_init(&smacros
, HASH_LARGE
);
638 hash_init(&mmacros
, HASH_LARGE
);
642 * Pop the context stack.
644 static void ctx_pop(void)
649 free_smacro_table(&c
->localmac
);
655 * Search for a key in the hash index; adding it if necessary
656 * (in which case we initialize the data pointer to NULL.)
659 hash_findi_add(struct hash_table
*hash
, const char *str
)
661 struct hash_insert hi
;
665 r
= hash_findi(hash
, str
, &hi
);
669 strx
= nasm_strdup(str
); /* Use a more efficient allocator here? */
670 return hash_add(&hi
, strx
, NULL
);
674 * Like hash_findi, but returns the data element rather than a pointer
675 * to it. Used only when not adding a new element, hence no third
679 hash_findix(struct hash_table
*hash
, const char *str
)
683 p
= hash_findi(hash
, str
, NULL
);
684 return p
? *p
: NULL
;
687 #define BUF_DELTA 512
689 * Read a line from the top file in istk, handling multiple CR/LFs
690 * at the end of the line read, and handling spurious ^Zs. Will
691 * return lines from the standard macro set if this has not already
694 static char *read_line(void)
696 char *buffer
, *p
, *q
;
697 int bufsize
, continued_count
;
701 const unsigned char *p
= stdmacpos
;
706 len
+= pp_directives_len
[c
-0x80]+1;
710 ret
= nasm_malloc(len
+1);
712 while ((c
= *stdmacpos
++)) {
714 memcpy(q
, pp_directives
[c
-0x80], pp_directives_len
[c
-0x80]);
715 q
+= pp_directives_len
[c
-0x80];
725 /* This was the last of the standard macro chain... */
727 if (any_extrastdmac
) {
728 stdmacpos
= extrastdmac
;
729 any_extrastdmac
= false;
730 } else if (do_predef
) {
732 Token
*head
, **tail
, *t
;
735 * Nasty hack: here we push the contents of
736 * `predef' on to the top-level expansion stack,
737 * since this is the most convenient way to
738 * implement the pre-include and pre-define
741 for (pd
= predef
; pd
; pd
= pd
->next
) {
744 for (t
= pd
->first
; t
; t
= t
->next
) {
745 *tail
= new_Token(NULL
, t
->type
, t
->text
, 0);
746 tail
= &(*tail
)->next
;
748 l
= nasm_malloc(sizeof(Line
));
749 l
->next
= istk
->expansion
;
761 buffer
= nasm_malloc(BUF_DELTA
);
765 q
= fgets(p
, bufsize
- (p
- buffer
), istk
->fp
);
769 if (p
> buffer
&& p
[-1] == '\n') {
770 /* Convert backslash-CRLF line continuation sequences into
771 nothing at all (for DOS and Windows) */
772 if (((p
- 2) > buffer
) && (p
[-3] == '\\') && (p
[-2] == '\r')) {
777 /* Also convert backslash-LF line continuation sequences into
778 nothing at all (for Unix) */
779 else if (((p
- 1) > buffer
) && (p
[-2] == '\\')) {
787 if (p
- buffer
> bufsize
- 10) {
788 int32_t offset
= p
- buffer
;
789 bufsize
+= BUF_DELTA
;
790 buffer
= nasm_realloc(buffer
, bufsize
);
791 p
= buffer
+ offset
; /* prevent stale-pointer problems */
795 if (!q
&& p
== buffer
) {
800 src_set_linnum(src_get_linnum() + istk
->lineinc
+
801 (continued_count
* istk
->lineinc
));
804 * Play safe: remove CRs as well as LFs, if any of either are
805 * present at the end of the line.
807 while (--p
>= buffer
&& (*p
== '\n' || *p
== '\r'))
811 * Handle spurious ^Z, which may be inserted into source files
812 * by some file transfer utilities.
814 buffer
[strcspn(buffer
, "\032")] = '\0';
816 list
->line(LIST_READ
, buffer
);
822 * Tokenize a line of text. This is a very simple process since we
823 * don't need to parse the value out of e.g. numeric tokens: we
824 * simply split one string into many.
826 static Token
*tokenize(char *line
)
829 enum pp_token_type type
;
831 Token
*t
, **tail
= &list
;
837 if (*p
== '+' && !nasm_isdigit(p
[1])) {
840 } else if (nasm_isdigit(*p
) ||
841 ((*p
== '-' || *p
== '+') && nasm_isdigit(p
[1]))) {
845 while (nasm_isdigit(*p
));
846 type
= TOK_PREPROC_ID
;
847 } else if (*p
== '{') {
849 while (*p
&& *p
!= '}') {
856 type
= TOK_PREPROC_ID
;
857 } else if (*p
== '[') {
859 line
+= 2; /* Skip the leading %[ */
861 while (lvl
&& (c
= *p
++)) {
873 p
= nasm_skip_string(p
)+1;
883 error(ERR_NONFATAL
, "unterminated %[ construct");
885 } else if (*p
== '?') {
886 type
= TOK_PREPROC_Q
; /* %? */
889 type
= TOK_PREPROC_QQ
; /* %?? */
892 } else if (isidchar(*p
) ||
893 ((*p
== '!' || *p
== '%' || *p
== '$') &&
898 while (isidchar(*p
));
899 type
= TOK_PREPROC_ID
;
905 } else if (isidstart(*p
) || (*p
== '$' && isidstart(p
[1]))) {
908 while (*p
&& isidchar(*p
))
910 } else if (*p
== '\'' || *p
== '"' || *p
== '`') {
915 p
= nasm_skip_string(p
);
920 error(ERR_WARNING
|ERR_PASS1
, "unterminated string");
921 /* Handling unterminated strings by UNV */
924 } else if (p
[0] == '$' && p
[1] == '$') {
925 type
= TOK_OTHER
; /* TOKEN_BASE */
927 } else if (isnumstart(*p
)) {
929 bool is_float
= false;
945 if (!is_hex
&& (c
== 'e' || c
== 'E')) {
947 if (*p
== '+' || *p
== '-') {
948 /* e can only be followed by +/- if it is either a
949 prefixed hex number or a floating-point number */
953 } else if (c
== 'H' || c
== 'h' || c
== 'X' || c
== 'x') {
955 } else if (c
== 'P' || c
== 'p') {
957 if (*p
== '+' || *p
== '-')
959 } else if (isnumchar(c
) || c
== '_')
962 /* we need to deal with consequences of the legacy
963 parser, like "1.nolist" being two tokens
964 (TOK_NUMBER, TOK_ID) here; at least give it
965 a shot for now. In the future, we probably need
966 a flex-based scanner with proper pattern matching
967 to do it as well as it can be done. Nothing in
968 the world is going to help the person who wants
969 0x123.p16 interpreted as two tokens, though. */
974 if (nasm_isdigit(*r
) || (is_hex
&& nasm_isxdigit(*r
)) ||
975 (!is_hex
&& (*r
== 'e' || *r
== 'E')) ||
976 (*r
== 'p' || *r
== 'P')) {
980 break; /* Terminate the token */
984 p
--; /* Point to first character beyond number */
986 if (p
== line
+1 && *line
== '$') {
987 type
= TOK_OTHER
; /* TOKEN_HERE */
989 if (has_e
&& !is_hex
) {
990 /* 1e13 is floating-point, but 1e13h is not */
994 type
= is_float
? TOK_FLOAT
: TOK_NUMBER
;
996 } else if (nasm_isspace(*p
)) {
997 type
= TOK_WHITESPACE
;
999 while (*p
&& nasm_isspace(*p
))
1002 * Whitespace just before end-of-line is discarded by
1003 * pretending it's a comment; whitespace just before a
1004 * comment gets lumped into the comment.
1006 if (!*p
|| *p
== ';') {
1011 } else if (*p
== ';') {
1017 * Anything else is an operator of some kind. We check
1018 * for all the double-character operators (>>, <<, //,
1019 * %%, <=, >=, ==, !=, <>, &&, ||, ^^), but anything
1020 * else is a single-character operator.
1023 if ((p
[0] == '>' && p
[1] == '>') ||
1024 (p
[0] == '<' && p
[1] == '<') ||
1025 (p
[0] == '/' && p
[1] == '/') ||
1026 (p
[0] == '<' && p
[1] == '=') ||
1027 (p
[0] == '>' && p
[1] == '=') ||
1028 (p
[0] == '=' && p
[1] == '=') ||
1029 (p
[0] == '!' && p
[1] == '=') ||
1030 (p
[0] == '<' && p
[1] == '>') ||
1031 (p
[0] == '&' && p
[1] == '&') ||
1032 (p
[0] == '|' && p
[1] == '|') ||
1033 (p
[0] == '^' && p
[1] == '^')) {
1039 /* Handling unterminated string by UNV */
1042 *tail = t = new_Token(NULL, TOK_STRING, line, p-line+1);
1043 t->text[p-line] = *line;
1047 if (type
!= TOK_COMMENT
) {
1048 *tail
= t
= new_Token(NULL
, type
, line
, p
- line
);
1057 * this function allocates a new managed block of memory and
1058 * returns a pointer to the block. The managed blocks are
1059 * deleted only all at once by the delete_Blocks function.
1061 static void *new_Block(size_t size
)
1063 Blocks
*b
= &blocks
;
1065 /* first, get to the end of the linked list */
1068 /* now allocate the requested chunk */
1069 b
->chunk
= nasm_malloc(size
);
1071 /* now allocate a new block for the next request */
1072 b
->next
= nasm_malloc(sizeof(Blocks
));
1073 /* and initialize the contents of the new block */
1074 b
->next
->next
= NULL
;
1075 b
->next
->chunk
= NULL
;
1080 * this function deletes all managed blocks of memory
1082 static void delete_Blocks(void)
1084 Blocks
*a
, *b
= &blocks
;
1087 * keep in mind that the first block, pointed to by blocks
1088 * is a static and not dynamically allocated, so we don't
1093 nasm_free(b
->chunk
);
1102 * this function creates a new Token and passes a pointer to it
1103 * back to the caller. It sets the type and text elements, and
1104 * also the a.mac and next elements to NULL.
1106 static Token
*new_Token(Token
* next
, enum pp_token_type type
,
1107 const char *text
, int txtlen
)
1112 if (freeTokens
== NULL
) {
1113 freeTokens
= (Token
*) new_Block(TOKEN_BLOCKSIZE
* sizeof(Token
));
1114 for (i
= 0; i
< TOKEN_BLOCKSIZE
- 1; i
++)
1115 freeTokens
[i
].next
= &freeTokens
[i
+ 1];
1116 freeTokens
[i
].next
= NULL
;
1119 freeTokens
= t
->next
;
1123 if (type
== TOK_WHITESPACE
|| text
== NULL
) {
1127 txtlen
= strlen(text
);
1128 t
->text
= nasm_malloc(txtlen
+1);
1129 memcpy(t
->text
, text
, txtlen
);
1130 t
->text
[txtlen
] = '\0';
1135 static Token
*delete_Token(Token
* t
)
1137 Token
*next
= t
->next
;
1139 t
->next
= freeTokens
;
1145 * Convert a line of tokens back into text.
1146 * If expand_locals is not zero, identifiers of the form "%$*xxx"
1147 * will be transformed into ..@ctxnum.xxx
1149 static char *detoken(Token
* tlist
, bool expand_locals
)
1157 for (t
= tlist
; t
; t
= t
->next
) {
1158 if (t
->type
== TOK_PREPROC_ID
&& t
->text
[1] == '!') {
1159 char *p
= getenv(t
->text
+ 2);
1162 t
->text
= nasm_strdup(p
);
1166 /* Expand local macros here and not during preprocessing */
1167 if (expand_locals
&&
1168 t
->type
== TOK_PREPROC_ID
&& t
->text
&&
1169 t
->text
[0] == '%' && t
->text
[1] == '$') {
1172 Context
*ctx
= get_ctx(t
->text
, &q
, false);
1175 snprintf(buffer
, sizeof(buffer
), "..@%"PRIu32
".", ctx
->number
);
1176 p
= nasm_strcat(buffer
, q
);
1181 if (t
->type
== TOK_WHITESPACE
) {
1183 } else if (t
->text
) {
1184 len
+= strlen(t
->text
);
1187 p
= line
= nasm_malloc(len
+ 1);
1188 for (t
= tlist
; t
; t
= t
->next
) {
1189 if (t
->type
== TOK_WHITESPACE
) {
1191 } else if (t
->text
) {
1202 * A scanner, suitable for use by the expression evaluator, which
1203 * operates on a line of Tokens. Expects a pointer to a pointer to
1204 * the first token in the line to be passed in as its private_data
1207 * FIX: This really needs to be unified with stdscan.
1209 static int ppscan(void *private_data
, struct tokenval
*tokval
)
1211 Token
**tlineptr
= private_data
;
1213 char ourcopy
[MAX_KEYWORD
+1], *p
, *r
, *s
;
1217 *tlineptr
= tline
? tline
->next
: NULL
;
1219 while (tline
&& (tline
->type
== TOK_WHITESPACE
||
1220 tline
->type
== TOK_COMMENT
));
1223 return tokval
->t_type
= TOKEN_EOS
;
1225 tokval
->t_charptr
= tline
->text
;
1227 if (tline
->text
[0] == '$' && !tline
->text
[1])
1228 return tokval
->t_type
= TOKEN_HERE
;
1229 if (tline
->text
[0] == '$' && tline
->text
[1] == '$' && !tline
->text
[2])
1230 return tokval
->t_type
= TOKEN_BASE
;
1232 if (tline
->type
== TOK_ID
) {
1233 p
= tokval
->t_charptr
= tline
->text
;
1235 tokval
->t_charptr
++;
1236 return tokval
->t_type
= TOKEN_ID
;
1239 for (r
= p
, s
= ourcopy
; *r
; r
++) {
1240 if (r
>= p
+MAX_KEYWORD
)
1241 return tokval
->t_type
= TOKEN_ID
; /* Not a keyword */
1242 *s
++ = nasm_tolower(*r
);
1245 /* right, so we have an identifier sitting in temp storage. now,
1246 * is it actually a register or instruction name, or what? */
1247 return nasm_token_hash(ourcopy
, tokval
);
1250 if (tline
->type
== TOK_NUMBER
) {
1252 tokval
->t_integer
= readnum(tline
->text
, &rn_error
);
1253 tokval
->t_charptr
= tline
->text
;
1255 return tokval
->t_type
= TOKEN_ERRNUM
;
1257 return tokval
->t_type
= TOKEN_NUM
;
1260 if (tline
->type
== TOK_FLOAT
) {
1261 return tokval
->t_type
= TOKEN_FLOAT
;
1264 if (tline
->type
== TOK_STRING
) {
1267 bq
= tline
->text
[0];
1268 tokval
->t_charptr
= tline
->text
;
1269 tokval
->t_inttwo
= nasm_unquote(tline
->text
, &ep
);
1271 if (ep
[0] != bq
|| ep
[1] != '\0')
1272 return tokval
->t_type
= TOKEN_ERRSTR
;
1274 return tokval
->t_type
= TOKEN_STR
;
1277 if (tline
->type
== TOK_OTHER
) {
1278 if (!strcmp(tline
->text
, "<<"))
1279 return tokval
->t_type
= TOKEN_SHL
;
1280 if (!strcmp(tline
->text
, ">>"))
1281 return tokval
->t_type
= TOKEN_SHR
;
1282 if (!strcmp(tline
->text
, "//"))
1283 return tokval
->t_type
= TOKEN_SDIV
;
1284 if (!strcmp(tline
->text
, "%%"))
1285 return tokval
->t_type
= TOKEN_SMOD
;
1286 if (!strcmp(tline
->text
, "=="))
1287 return tokval
->t_type
= TOKEN_EQ
;
1288 if (!strcmp(tline
->text
, "<>"))
1289 return tokval
->t_type
= TOKEN_NE
;
1290 if (!strcmp(tline
->text
, "!="))
1291 return tokval
->t_type
= TOKEN_NE
;
1292 if (!strcmp(tline
->text
, "<="))
1293 return tokval
->t_type
= TOKEN_LE
;
1294 if (!strcmp(tline
->text
, ">="))
1295 return tokval
->t_type
= TOKEN_GE
;
1296 if (!strcmp(tline
->text
, "&&"))
1297 return tokval
->t_type
= TOKEN_DBL_AND
;
1298 if (!strcmp(tline
->text
, "^^"))
1299 return tokval
->t_type
= TOKEN_DBL_XOR
;
1300 if (!strcmp(tline
->text
, "||"))
1301 return tokval
->t_type
= TOKEN_DBL_OR
;
1305 * We have no other options: just return the first character of
1308 return tokval
->t_type
= tline
->text
[0];
1312 * Compare a string to the name of an existing macro; this is a
1313 * simple wrapper which calls either strcmp or nasm_stricmp
1314 * depending on the value of the `casesense' parameter.
1316 static int mstrcmp(const char *p
, const char *q
, bool casesense
)
1318 return casesense
? strcmp(p
, q
) : nasm_stricmp(p
, q
);
1322 * Compare a string to the name of an existing macro; this is a
1323 * simple wrapper which calls either strcmp or nasm_stricmp
1324 * depending on the value of the `casesense' parameter.
1326 static int mmemcmp(const char *p
, const char *q
, size_t l
, bool casesense
)
1328 return casesense
? memcmp(p
, q
, l
) : nasm_memicmp(p
, q
, l
);
1332 * Return the Context structure associated with a %$ token. Return
1333 * NULL, having _already_ reported an error condition, if the
1334 * context stack isn't deep enough for the supplied number of $
1336 * If all_contexts == true, contexts that enclose current are
1337 * also scanned for such smacro, until it is found; if not -
1338 * only the context that directly results from the number of $'s
1339 * in variable's name.
1341 * If "namep" is non-NULL, set it to the pointer to the macro name
1342 * tail, i.e. the part beyond %$...
1344 static Context
*get_ctx(const char *name
, const char **namep
,
1354 if (!name
|| name
[0] != '%' || name
[1] != '$')
1358 error(ERR_NONFATAL
, "`%s': context stack is empty", name
);
1365 while (ctx
&& *name
== '$') {
1371 error(ERR_NONFATAL
, "`%s': context stack is only"
1372 " %d level%s deep", name
, i
, (i
== 1 ? "" : "s"));
1383 /* Search for this smacro in found context */
1384 m
= hash_findix(&ctx
->localmac
, name
);
1386 if (!mstrcmp(m
->name
, name
, m
->casesense
))
1397 * Check to see if a file is already in a string list
1399 static bool in_list(const StrList
*list
, const char *str
)
1402 if (!strcmp(list
->str
, str
))
1410 * Open an include file. This routine must always return a valid
1411 * file pointer if it returns - it's responsible for throwing an
1412 * ERR_FATAL and bombing out completely if not. It should also try
1413 * the include path one by one until it finds the file or reaches
1414 * the end of the path.
1416 static FILE *inc_fopen(const char *file
, StrList
**dhead
, StrList
***dtail
,
1421 IncPath
*ip
= ipath
;
1422 int len
= strlen(file
);
1423 size_t prefix_len
= 0;
1427 sl
= nasm_malloc(prefix_len
+len
+1+sizeof sl
->next
);
1428 memcpy(sl
->str
, prefix
, prefix_len
);
1429 memcpy(sl
->str
+prefix_len
, file
, len
+1);
1430 fp
= fopen(sl
->str
, "r");
1431 if (fp
&& dhead
&& !in_list(*dhead
, sl
->str
)) {
1449 prefix_len
= strlen(prefix
);
1451 /* -MG given and file not found */
1452 if (dhead
&& !in_list(*dhead
, file
)) {
1453 sl
= nasm_malloc(len
+1+sizeof sl
->next
);
1455 strcpy(sl
->str
, file
);
1463 error(ERR_FATAL
, "unable to open include file `%s'", file
);
1464 return NULL
; /* never reached - placate compilers */
1468 * Determine if we should warn on defining a single-line macro of
1469 * name `name', with `nparam' parameters. If nparam is 0 or -1, will
1470 * return true if _any_ single-line macro of that name is defined.
1471 * Otherwise, will return true if a single-line macro with either
1472 * `nparam' or no parameters is defined.
1474 * If a macro with precisely the right number of parameters is
1475 * defined, or nparam is -1, the address of the definition structure
1476 * will be returned in `defn'; otherwise NULL will be returned. If `defn'
1477 * is NULL, no action will be taken regarding its contents, and no
1480 * Note that this is also called with nparam zero to resolve
1483 * If you already know which context macro belongs to, you can pass
1484 * the context pointer as first parameter; if you won't but name begins
1485 * with %$ the context will be automatically computed. If all_contexts
1486 * is true, macro will be searched in outer contexts as well.
1489 smacro_defined(Context
* ctx
, const char *name
, int nparam
, SMacro
** defn
,
1492 struct hash_table
*smtbl
;
1496 smtbl
= &ctx
->localmac
;
1497 } else if (name
[0] == '%' && name
[1] == '$') {
1499 ctx
= get_ctx(name
, &name
, false);
1501 return false; /* got to return _something_ */
1502 smtbl
= &ctx
->localmac
;
1506 m
= (SMacro
*) hash_findix(smtbl
, name
);
1509 if (!mstrcmp(m
->name
, name
, m
->casesense
&& nocase
) &&
1510 (nparam
<= 0 || m
->nparam
== 0 || nparam
== (int) m
->nparam
)) {
1512 if (nparam
== (int) m
->nparam
|| nparam
== -1)
1526 * Count and mark off the parameters in a multi-line macro call.
1527 * This is called both from within the multi-line macro expansion
1528 * code, and also to mark off the default parameters when provided
1529 * in a %macro definition line.
1531 static void count_mmac_params(Token
* t
, int *nparam
, Token
*** params
)
1533 int paramsize
, brace
;
1535 *nparam
= paramsize
= 0;
1538 /* +1: we need space for the final NULL */
1539 if (*nparam
+1 >= paramsize
) {
1540 paramsize
+= PARAM_DELTA
;
1541 *params
= nasm_realloc(*params
, sizeof(**params
) * paramsize
);
1545 if (tok_is_(t
, "{"))
1547 (*params
)[(*nparam
)++] = t
;
1548 while (tok_isnt_(t
, brace
? "}" : ","))
1550 if (t
) { /* got a comma/brace */
1554 * Now we've found the closing brace, look further
1558 if (tok_isnt_(t
, ",")) {
1560 "braces do not enclose all of macro parameter");
1561 while (tok_isnt_(t
, ","))
1565 t
= t
->next
; /* eat the comma */
1572 * Determine whether one of the various `if' conditions is true or
1575 * We must free the tline we get passed.
1577 static bool if_condition(Token
* tline
, enum preproc_token ct
)
1579 enum pp_conditional i
= PP_COND(ct
);
1581 Token
*t
, *tt
, **tptr
, *origline
;
1582 struct tokenval tokval
;
1584 enum pp_token_type needtype
;
1590 j
= false; /* have we matched yet? */
1595 if (tline
->type
!= TOK_ID
) {
1597 "`%s' expects context identifiers", pp_directives
[ct
]);
1598 free_tlist(origline
);
1601 if (cstk
&& cstk
->name
&& !nasm_stricmp(tline
->text
, cstk
->name
))
1603 tline
= tline
->next
;
1608 j
= false; /* have we matched yet? */
1611 if (!tline
|| (tline
->type
!= TOK_ID
&&
1612 (tline
->type
!= TOK_PREPROC_ID
||
1613 tline
->text
[1] != '$'))) {
1615 "`%s' expects macro identifiers", pp_directives
[ct
]);
1618 if (smacro_defined(NULL
, tline
->text
, 0, NULL
, true))
1620 tline
= tline
->next
;
1626 tline
= expand_smacro(tline
);
1628 while (tok_isnt_(tt
, ","))
1632 "`%s' expects two comma-separated arguments",
1637 j
= true; /* assume equality unless proved not */
1638 while ((t
->type
!= TOK_OTHER
|| strcmp(t
->text
, ",")) && tt
) {
1639 if (tt
->type
== TOK_OTHER
&& !strcmp(tt
->text
, ",")) {
1640 error(ERR_NONFATAL
, "`%s': more than one comma on line",
1644 if (t
->type
== TOK_WHITESPACE
) {
1648 if (tt
->type
== TOK_WHITESPACE
) {
1652 if (tt
->type
!= t
->type
) {
1653 j
= false; /* found mismatching tokens */
1656 /* When comparing strings, need to unquote them first */
1657 if (t
->type
== TOK_STRING
) {
1658 size_t l1
= nasm_unquote(t
->text
, NULL
);
1659 size_t l2
= nasm_unquote(tt
->text
, NULL
);
1665 if (mmemcmp(t
->text
, tt
->text
, l1
, i
== PPC_IFIDN
)) {
1669 } else if (mstrcmp(tt
->text
, t
->text
, i
== PPC_IFIDN
) != 0) {
1670 j
= false; /* found mismatching tokens */
1677 if ((t
->type
!= TOK_OTHER
|| strcmp(t
->text
, ",")) || tt
)
1678 j
= false; /* trailing gunk on one end or other */
1684 MMacro searching
, *mmac
;
1687 tline
= expand_id(tline
);
1688 if (!tok_type_(tline
, TOK_ID
)) {
1690 "`%s' expects a macro name", pp_directives
[ct
]);
1693 searching
.name
= nasm_strdup(tline
->text
);
1694 searching
.casesense
= true;
1695 searching
.plus
= false;
1696 searching
.nolist
= false;
1697 searching
.in_progress
= 0;
1698 searching
.max_depth
= 0;
1699 searching
.rep_nest
= NULL
;
1700 searching
.nparam_min
= 0;
1701 searching
.nparam_max
= INT_MAX
;
1702 tline
= expand_smacro(tline
->next
);
1705 } else if (!tok_type_(tline
, TOK_NUMBER
)) {
1707 "`%s' expects a parameter count or nothing",
1710 searching
.nparam_min
= searching
.nparam_max
=
1711 readnum(tline
->text
, &j
);
1714 "unable to parse parameter count `%s'",
1717 if (tline
&& tok_is_(tline
->next
, "-")) {
1718 tline
= tline
->next
->next
;
1719 if (tok_is_(tline
, "*"))
1720 searching
.nparam_max
= INT_MAX
;
1721 else if (!tok_type_(tline
, TOK_NUMBER
))
1723 "`%s' expects a parameter count after `-'",
1726 searching
.nparam_max
= readnum(tline
->text
, &j
);
1729 "unable to parse parameter count `%s'",
1731 if (searching
.nparam_min
> searching
.nparam_max
)
1733 "minimum parameter count exceeds maximum");
1736 if (tline
&& tok_is_(tline
->next
, "+")) {
1737 tline
= tline
->next
;
1738 searching
.plus
= true;
1740 mmac
= (MMacro
*) hash_findix(&mmacros
, searching
.name
);
1742 if (!strcmp(mmac
->name
, searching
.name
) &&
1743 (mmac
->nparam_min
<= searching
.nparam_max
1745 && (searching
.nparam_min
<= mmac
->nparam_max
1752 if(tline
&& tline
->next
)
1753 error(ERR_WARNING
|ERR_PASS1
,
1754 "trailing garbage after %%ifmacro ignored");
1755 nasm_free(searching
.name
);
1764 needtype
= TOK_NUMBER
;
1767 needtype
= TOK_STRING
;
1771 t
= tline
= expand_smacro(tline
);
1773 while (tok_type_(t
, TOK_WHITESPACE
) ||
1774 (needtype
== TOK_NUMBER
&&
1775 tok_type_(t
, TOK_OTHER
) &&
1776 (t
->text
[0] == '-' || t
->text
[0] == '+') &&
1780 j
= tok_type_(t
, needtype
);
1784 t
= tline
= expand_smacro(tline
);
1785 while (tok_type_(t
, TOK_WHITESPACE
))
1790 t
= t
->next
; /* Skip the actual token */
1791 while (tok_type_(t
, TOK_WHITESPACE
))
1793 j
= !t
; /* Should be nothing left */
1798 t
= tline
= expand_smacro(tline
);
1799 while (tok_type_(t
, TOK_WHITESPACE
))
1802 j
= !t
; /* Should be empty */
1806 t
= tline
= expand_smacro(tline
);
1808 tokval
.t_type
= TOKEN_INVALID
;
1809 evalresult
= evaluate(ppscan
, tptr
, &tokval
,
1810 NULL
, pass
| CRITICAL
, error
, NULL
);
1814 error(ERR_WARNING
|ERR_PASS1
,
1815 "trailing garbage after expression ignored");
1816 if (!is_simple(evalresult
)) {
1818 "non-constant value given to `%s'", pp_directives
[ct
]);
1821 j
= reloc_value(evalresult
) != 0;
1826 "preprocessor directive `%s' not yet implemented",
1831 free_tlist(origline
);
1832 return j
^ PP_NEGATIVE(ct
);
1835 free_tlist(origline
);
1840 * Common code for defining an smacro
1842 static bool define_smacro(Context
*ctx
, const char *mname
, bool casesense
,
1843 int nparam
, Token
*expansion
)
1845 SMacro
*smac
, **smhead
;
1846 struct hash_table
*smtbl
;
1848 if (smacro_defined(ctx
, mname
, nparam
, &smac
, casesense
)) {
1850 error(ERR_WARNING
|ERR_PASS1
,
1851 "single-line macro `%s' defined both with and"
1852 " without parameters", mname
);
1854 /* Some instances of the old code considered this a failure,
1855 some others didn't. What is the right thing to do here? */
1856 free_tlist(expansion
);
1857 return false; /* Failure */
1860 * We're redefining, so we have to take over an
1861 * existing SMacro structure. This means freeing
1862 * what was already in it.
1864 nasm_free(smac
->name
);
1865 free_tlist(smac
->expansion
);
1868 smtbl
= ctx
? &ctx
->localmac
: &smacros
;
1869 smhead
= (SMacro
**) hash_findi_add(smtbl
, mname
);
1870 smac
= nasm_malloc(sizeof(SMacro
));
1871 smac
->next
= *smhead
;
1874 smac
->name
= nasm_strdup(mname
);
1875 smac
->casesense
= casesense
;
1876 smac
->nparam
= nparam
;
1877 smac
->expansion
= expansion
;
1878 smac
->in_progress
= false;
1879 return true; /* Success */
1883 * Undefine an smacro
1885 static void undef_smacro(Context
*ctx
, const char *mname
)
1887 SMacro
**smhead
, *s
, **sp
;
1888 struct hash_table
*smtbl
;
1890 smtbl
= ctx
? &ctx
->localmac
: &smacros
;
1891 smhead
= (SMacro
**)hash_findi(smtbl
, mname
, NULL
);
1895 * We now have a macro name... go hunt for it.
1898 while ((s
= *sp
) != NULL
) {
1899 if (!mstrcmp(s
->name
, mname
, s
->casesense
)) {
1902 free_tlist(s
->expansion
);
1912 * Parse a mmacro specification.
1914 static bool parse_mmacro_spec(Token
*tline
, MMacro
*def
, const char *directive
)
1918 tline
= tline
->next
;
1920 tline
= expand_id(tline
);
1921 if (!tok_type_(tline
, TOK_ID
)) {
1922 error(ERR_NONFATAL
, "`%s' expects a macro name", directive
);
1927 def
->name
= nasm_strdup(tline
->text
);
1929 def
->nolist
= false;
1930 def
->in_progress
= 0;
1931 def
->rep_nest
= NULL
;
1932 def
->nparam_min
= 0;
1933 def
->nparam_max
= 0;
1935 tline
= expand_smacro(tline
->next
);
1937 if (!tok_type_(tline
, TOK_NUMBER
)) {
1938 error(ERR_NONFATAL
, "`%s' expects a parameter count", directive
);
1940 def
->nparam_min
= def
->nparam_max
=
1941 readnum(tline
->text
, &err
);
1944 "unable to parse parameter count `%s'", tline
->text
);
1946 if (tline
&& tok_is_(tline
->next
, "-")) {
1947 tline
= tline
->next
->next
;
1948 if (tok_is_(tline
, "*")) {
1949 def
->nparam_max
= INT_MAX
;
1950 } else if (!tok_type_(tline
, TOK_NUMBER
)) {
1952 "`%s' expects a parameter count after `-'", directive
);
1954 def
->nparam_max
= readnum(tline
->text
, &err
);
1956 error(ERR_NONFATAL
, "unable to parse parameter count `%s'",
1959 if (def
->nparam_min
> def
->nparam_max
) {
1960 error(ERR_NONFATAL
, "minimum parameter count exceeds maximum");
1964 if (tline
&& tok_is_(tline
->next
, "+")) {
1965 tline
= tline
->next
;
1968 if (tline
&& tok_type_(tline
->next
, TOK_ID
) &&
1969 !nasm_stricmp(tline
->next
->text
, ".nolist")) {
1970 tline
= tline
->next
;
1975 * Handle default parameters.
1977 if (tline
&& tline
->next
) {
1978 def
->dlist
= tline
->next
;
1980 count_mmac_params(def
->dlist
, &def
->ndefs
, &def
->defaults
);
1983 def
->defaults
= NULL
;
1985 def
->expansion
= NULL
;
1988 def
->ndefs
> def
->nparam_max
- def
->nparam_min
&&
1990 error(ERR_WARNING
|ERR_PASS1
|ERR_WARN_MDP
,
1991 "too many default macro parameters");
1998 * Decode a size directive
2000 static int parse_size(const char *str
) {
2001 static const char *size_names
[] =
2002 { "byte", "dword", "oword", "qword", "tword", "word", "yword" };
2003 static const int sizes
[] =
2004 { 0, 1, 4, 16, 8, 10, 2, 32 };
2006 return sizes
[bsii(str
, size_names
, elements(size_names
))+1];
2010 * find and process preprocessor directive in passed line
2011 * Find out if a line contains a preprocessor directive, and deal
2014 * If a directive _is_ found, it is the responsibility of this routine
2015 * (and not the caller) to free_tlist() the line.
2017 * @param tline a pointer to the current tokeninzed line linked list
2018 * @return DIRECTIVE_FOUND or NO_DIRECTIVE_FOUND
2021 static int do_directive(Token
* tline
)
2023 enum preproc_token i
;
2036 MMacro
*mmac
, **mmhead
;
2037 Token
*t
, *tt
, *param_start
, *macro_start
, *last
, **tptr
, *origline
;
2039 struct tokenval tokval
;
2041 MMacro
*tmp_defining
; /* Used when manipulating rep_nest */
2049 if (!tline
|| !tok_type_(tline
, TOK_PREPROC_ID
) ||
2050 (tline
->text
[1] == '%' || tline
->text
[1] == '$'
2051 || tline
->text
[1] == '!'))
2052 return NO_DIRECTIVE_FOUND
;
2054 i
= pp_token_hash(tline
->text
);
2057 * If we're in a non-emitting branch of a condition construct,
2058 * or walking to the end of an already terminated %rep block,
2059 * we should ignore all directives except for condition
2062 if (((istk
->conds
&& !emitting(istk
->conds
->state
)) ||
2063 (istk
->mstk
&& !istk
->mstk
->in_progress
)) && !is_condition(i
)) {
2064 return NO_DIRECTIVE_FOUND
;
2068 * If we're defining a macro or reading a %rep block, we should
2069 * ignore all directives except for %macro/%imacro (which nest),
2070 * %endm/%endmacro, and (only if we're in a %rep block) %endrep.
2071 * If we're in a %rep block, another %rep nests, so should be let through.
2073 if (defining
&& i
!= PP_MACRO
&& i
!= PP_IMACRO
&&
2074 i
!= PP_ENDMACRO
&& i
!= PP_ENDM
&&
2075 (defining
->name
|| (i
!= PP_ENDREP
&& i
!= PP_REP
))) {
2076 return NO_DIRECTIVE_FOUND
;
2080 if (i
== PP_MACRO
|| i
== PP_IMACRO
) {
2082 return NO_DIRECTIVE_FOUND
;
2083 } else if (nested_mac_count
> 0) {
2084 if (i
== PP_ENDMACRO
) {
2086 return NO_DIRECTIVE_FOUND
;
2089 if (!defining
->name
) {
2092 return NO_DIRECTIVE_FOUND
;
2093 } else if (nested_rep_count
> 0) {
2094 if (i
== PP_ENDREP
) {
2096 return NO_DIRECTIVE_FOUND
;
2104 error(ERR_NONFATAL
, "unknown preprocessor directive `%s'",
2106 return NO_DIRECTIVE_FOUND
; /* didn't get it */
2109 /* Directive to tell NASM what the default stack size is. The
2110 * default is for a 16-bit stack, and this can be overriden with
2112 * the following form:
2114 * ARG arg1:WORD, arg2:DWORD, arg4:QWORD
2116 tline
= tline
->next
;
2117 if (tline
&& tline
->type
== TOK_WHITESPACE
)
2118 tline
= tline
->next
;
2119 if (!tline
|| tline
->type
!= TOK_ID
) {
2120 error(ERR_NONFATAL
, "`%%stacksize' missing size parameter");
2121 free_tlist(origline
);
2122 return DIRECTIVE_FOUND
;
2124 if (nasm_stricmp(tline
->text
, "flat") == 0) {
2125 /* All subsequent ARG directives are for a 32-bit stack */
2127 StackPointer
= "ebp";
2130 } else if (nasm_stricmp(tline
->text
, "flat64") == 0) {
2131 /* All subsequent ARG directives are for a 64-bit stack */
2133 StackPointer
= "rbp";
2136 } else if (nasm_stricmp(tline
->text
, "large") == 0) {
2137 /* All subsequent ARG directives are for a 16-bit stack,
2138 * far function call.
2141 StackPointer
= "bp";
2144 } else if (nasm_stricmp(tline
->text
, "small") == 0) {
2145 /* All subsequent ARG directives are for a 16-bit stack,
2146 * far function call. We don't support near functions.
2149 StackPointer
= "bp";
2153 error(ERR_NONFATAL
, "`%%stacksize' invalid size type");
2154 free_tlist(origline
);
2155 return DIRECTIVE_FOUND
;
2157 free_tlist(origline
);
2158 return DIRECTIVE_FOUND
;
2161 /* TASM like ARG directive to define arguments to functions, in
2162 * the following form:
2164 * ARG arg1:WORD, arg2:DWORD, arg4:QWORD
2168 char *arg
, directive
[256];
2169 int size
= StackSize
;
2171 /* Find the argument name */
2172 tline
= tline
->next
;
2173 if (tline
&& tline
->type
== TOK_WHITESPACE
)
2174 tline
= tline
->next
;
2175 if (!tline
|| tline
->type
!= TOK_ID
) {
2176 error(ERR_NONFATAL
, "`%%arg' missing argument parameter");
2177 free_tlist(origline
);
2178 return DIRECTIVE_FOUND
;
2182 /* Find the argument size type */
2183 tline
= tline
->next
;
2184 if (!tline
|| tline
->type
!= TOK_OTHER
2185 || tline
->text
[0] != ':') {
2187 "Syntax error processing `%%arg' directive");
2188 free_tlist(origline
);
2189 return DIRECTIVE_FOUND
;
2191 tline
= tline
->next
;
2192 if (!tline
|| tline
->type
!= TOK_ID
) {
2193 error(ERR_NONFATAL
, "`%%arg' missing size type parameter");
2194 free_tlist(origline
);
2195 return DIRECTIVE_FOUND
;
2198 /* Allow macro expansion of type parameter */
2199 tt
= tokenize(tline
->text
);
2200 tt
= expand_smacro(tt
);
2201 size
= parse_size(tt
->text
);
2204 "Invalid size type for `%%arg' missing directive");
2206 free_tlist(origline
);
2207 return DIRECTIVE_FOUND
;
2211 /* Round up to even stack slots */
2212 size
= (size
+StackSize
-1) & ~(StackSize
-1);
2214 /* Now define the macro for the argument */
2215 snprintf(directive
, sizeof(directive
), "%%define %s (%s+%d)",
2216 arg
, StackPointer
, offset
);
2217 do_directive(tokenize(directive
));
2220 /* Move to the next argument in the list */
2221 tline
= tline
->next
;
2222 if (tline
&& tline
->type
== TOK_WHITESPACE
)
2223 tline
= tline
->next
;
2224 } while (tline
&& tline
->type
== TOK_OTHER
&& tline
->text
[0] == ',');
2226 free_tlist(origline
);
2227 return DIRECTIVE_FOUND
;
2230 /* TASM like LOCAL directive to define local variables for a
2231 * function, in the following form:
2233 * LOCAL local1:WORD, local2:DWORD, local4:QWORD = LocalSize
2235 * The '= LocalSize' at the end is ignored by NASM, but is
2236 * required by TASM to define the local parameter size (and used
2237 * by the TASM macro package).
2239 offset
= LocalOffset
;
2241 char *local
, directive
[256];
2242 int size
= StackSize
;
2244 /* Find the argument name */
2245 tline
= tline
->next
;
2246 if (tline
&& tline
->type
== TOK_WHITESPACE
)
2247 tline
= tline
->next
;
2248 if (!tline
|| tline
->type
!= TOK_ID
) {
2250 "`%%local' missing argument parameter");
2251 free_tlist(origline
);
2252 return DIRECTIVE_FOUND
;
2254 local
= tline
->text
;
2256 /* Find the argument size type */
2257 tline
= tline
->next
;
2258 if (!tline
|| tline
->type
!= TOK_OTHER
2259 || tline
->text
[0] != ':') {
2261 "Syntax error processing `%%local' directive");
2262 free_tlist(origline
);
2263 return DIRECTIVE_FOUND
;
2265 tline
= tline
->next
;
2266 if (!tline
|| tline
->type
!= TOK_ID
) {
2268 "`%%local' missing size type parameter");
2269 free_tlist(origline
);
2270 return DIRECTIVE_FOUND
;
2273 /* Allow macro expansion of type parameter */
2274 tt
= tokenize(tline
->text
);
2275 tt
= expand_smacro(tt
);
2276 size
= parse_size(tt
->text
);
2279 "Invalid size type for `%%local' missing directive");
2281 free_tlist(origline
);
2282 return DIRECTIVE_FOUND
;
2286 /* Round up to even stack slots */
2287 size
= (size
+StackSize
-1) & ~(StackSize
-1);
2289 offset
+= size
; /* Negative offset, increment before */
2291 /* Now define the macro for the argument */
2292 snprintf(directive
, sizeof(directive
), "%%define %s (%s-%d)",
2293 local
, StackPointer
, offset
);
2294 do_directive(tokenize(directive
));
2296 /* Now define the assign to setup the enter_c macro correctly */
2297 snprintf(directive
, sizeof(directive
),
2298 "%%assign %%$localsize %%$localsize+%d", size
);
2299 do_directive(tokenize(directive
));
2301 /* Move to the next argument in the list */
2302 tline
= tline
->next
;
2303 if (tline
&& tline
->type
== TOK_WHITESPACE
)
2304 tline
= tline
->next
;
2305 } while (tline
&& tline
->type
== TOK_OTHER
&& tline
->text
[0] == ',');
2306 LocalOffset
= offset
;
2307 free_tlist(origline
);
2308 return DIRECTIVE_FOUND
;
2312 error(ERR_WARNING
|ERR_PASS1
,
2313 "trailing garbage after `%%clear' ignored");
2316 free_tlist(origline
);
2317 return DIRECTIVE_FOUND
;
2320 t
= tline
->next
= expand_smacro(tline
->next
);
2322 if (!t
|| (t
->type
!= TOK_STRING
&&
2323 t
->type
!= TOK_INTERNAL_STRING
)) {
2324 error(ERR_NONFATAL
, "`%%depend' expects a file name");
2325 free_tlist(origline
);
2326 return DIRECTIVE_FOUND
; /* but we did _something_ */
2329 error(ERR_WARNING
|ERR_PASS1
,
2330 "trailing garbage after `%%depend' ignored");
2332 if (t
->type
!= TOK_INTERNAL_STRING
)
2333 nasm_unquote(p
, NULL
);
2334 if (dephead
&& !in_list(*dephead
, p
)) {
2335 StrList
*sl
= nasm_malloc(strlen(p
)+1+sizeof sl
->next
);
2339 deptail
= &sl
->next
;
2341 free_tlist(origline
);
2342 return DIRECTIVE_FOUND
;
2345 t
= tline
->next
= expand_smacro(tline
->next
);
2348 if (!t
|| (t
->type
!= TOK_STRING
&&
2349 t
->type
!= TOK_INTERNAL_STRING
)) {
2350 error(ERR_NONFATAL
, "`%%include' expects a file name");
2351 free_tlist(origline
);
2352 return DIRECTIVE_FOUND
; /* but we did _something_ */
2355 error(ERR_WARNING
|ERR_PASS1
,
2356 "trailing garbage after `%%include' ignored");
2358 if (t
->type
!= TOK_INTERNAL_STRING
)
2359 nasm_unquote(p
, NULL
);
2360 inc
= nasm_malloc(sizeof(Include
));
2363 inc
->fp
= inc_fopen(p
, dephead
, &deptail
, pass
== 0);
2365 /* -MG given but file not found */
2368 inc
->fname
= src_set_fname(nasm_strdup(p
));
2369 inc
->lineno
= src_set_linnum(0);
2371 inc
->expansion
= NULL
;
2374 list
->uplevel(LIST_INCLUDE
);
2376 free_tlist(origline
);
2377 return DIRECTIVE_FOUND
;
2381 static macros_t
*use_pkg
;
2382 const char *pkg_macro
;
2384 tline
= tline
->next
;
2386 tline
= expand_id(tline
);
2388 if (!tline
|| (tline
->type
!= TOK_STRING
&&
2389 tline
->type
!= TOK_INTERNAL_STRING
&&
2390 tline
->type
!= TOK_ID
)) {
2391 error(ERR_NONFATAL
, "`%%use' expects a package name");
2392 free_tlist(origline
);
2393 return DIRECTIVE_FOUND
; /* but we did _something_ */
2396 error(ERR_WARNING
|ERR_PASS1
,
2397 "trailing garbage after `%%use' ignored");
2398 if (tline
->type
== TOK_STRING
)
2399 nasm_unquote(tline
->text
, NULL
);
2400 use_pkg
= nasm_stdmac_find_package(tline
->text
);
2402 error(ERR_NONFATAL
, "unknown `%%use' package: %s", tline
->text
);
2403 /* The first string will be <%define>__USE_*__ */
2404 pkg_macro
= (char *)use_pkg
+ 1;
2405 if (!smacro_defined(NULL
, pkg_macro
, 0, NULL
, true)) {
2406 /* Not already included, go ahead and include it */
2407 stdmacpos
= use_pkg
;
2409 free_tlist(origline
);
2410 return DIRECTIVE_FOUND
;
2415 tline
= tline
->next
;
2417 tline
= expand_id(tline
);
2419 if (!tok_type_(tline
, TOK_ID
)) {
2420 error(ERR_NONFATAL
, "`%s' expects a context identifier",
2422 free_tlist(origline
);
2423 return DIRECTIVE_FOUND
; /* but we did _something_ */
2426 error(ERR_WARNING
|ERR_PASS1
,
2427 "trailing garbage after `%s' ignored",
2429 p
= nasm_strdup(tline
->text
);
2431 p
= NULL
; /* Anonymous */
2435 ctx
= nasm_malloc(sizeof(Context
));
2437 hash_init(&ctx
->localmac
, HASH_SMALL
);
2439 ctx
->number
= unique
++;
2444 error(ERR_NONFATAL
, "`%s': context stack is empty",
2446 } else if (i
== PP_POP
) {
2447 if (p
&& (!cstk
->name
|| nasm_stricmp(p
, cstk
->name
)))
2448 error(ERR_NONFATAL
, "`%%pop' in wrong context: %s, "
2450 cstk
->name
? cstk
->name
: "anonymous", p
);
2455 nasm_free(cstk
->name
);
2461 free_tlist(origline
);
2462 return DIRECTIVE_FOUND
;
2464 severity
= ERR_FATAL
;
2467 severity
= ERR_NONFATAL
;
2470 severity
= ERR_WARNING
|ERR_WARN_USER
;
2475 /* Only error out if this is the final pass */
2476 if (pass
!= 2 && i
!= PP_FATAL
)
2477 return DIRECTIVE_FOUND
;
2479 tline
->next
= expand_smacro(tline
->next
);
2480 tline
= tline
->next
;
2482 t
= tline
? tline
->next
: NULL
;
2484 if (tok_type_(tline
, TOK_STRING
) && !t
) {
2485 /* The line contains only a quoted string */
2487 nasm_unquote(p
, NULL
);
2488 error(severity
, "%s", p
);
2490 /* Not a quoted string, or more than a quoted string */
2491 p
= detoken(tline
, false);
2492 error(severity
, "%s", p
);
2495 free_tlist(origline
);
2496 return DIRECTIVE_FOUND
;
2500 if (istk
->conds
&& !emitting(istk
->conds
->state
))
2503 j
= if_condition(tline
->next
, i
);
2504 tline
->next
= NULL
; /* it got freed */
2505 j
= j
< 0 ? COND_NEVER
: j
? COND_IF_TRUE
: COND_IF_FALSE
;
2507 cond
= nasm_malloc(sizeof(Cond
));
2508 cond
->next
= istk
->conds
;
2511 free_tlist(origline
);
2512 return DIRECTIVE_FOUND
;
2516 error(ERR_FATAL
, "`%s': no matching `%%if'", pp_directives
[i
]);
2517 switch(istk
->conds
->state
) {
2519 istk
->conds
->state
= COND_DONE
;
2526 case COND_ELSE_TRUE
:
2527 case COND_ELSE_FALSE
:
2528 error_precond(ERR_WARNING
|ERR_PASS1
,
2529 "`%%elif' after `%%else' ignored");
2530 istk
->conds
->state
= COND_NEVER
;
2535 * IMPORTANT: In the case of %if, we will already have
2536 * called expand_mmac_params(); however, if we're
2537 * processing an %elif we must have been in a
2538 * non-emitting mode, which would have inhibited
2539 * the normal invocation of expand_mmac_params().
2540 * Therefore, we have to do it explicitly here.
2542 j
= if_condition(expand_mmac_params(tline
->next
), i
);
2543 tline
->next
= NULL
; /* it got freed */
2544 istk
->conds
->state
=
2545 j
< 0 ? COND_NEVER
: j
? COND_IF_TRUE
: COND_IF_FALSE
;
2548 free_tlist(origline
);
2549 return DIRECTIVE_FOUND
;
2553 error_precond(ERR_WARNING
|ERR_PASS1
,
2554 "trailing garbage after `%%else' ignored");
2556 error(ERR_FATAL
, "`%%else': no matching `%%if'");
2557 switch(istk
->conds
->state
) {
2560 istk
->conds
->state
= COND_ELSE_FALSE
;
2567 istk
->conds
->state
= COND_ELSE_TRUE
;
2570 case COND_ELSE_TRUE
:
2571 case COND_ELSE_FALSE
:
2572 error_precond(ERR_WARNING
|ERR_PASS1
,
2573 "`%%else' after `%%else' ignored.");
2574 istk
->conds
->state
= COND_NEVER
;
2577 free_tlist(origline
);
2578 return DIRECTIVE_FOUND
;
2582 error_precond(ERR_WARNING
|ERR_PASS1
,
2583 "trailing garbage after `%%endif' ignored");
2585 error(ERR_FATAL
, "`%%endif': no matching `%%if'");
2587 istk
->conds
= cond
->next
;
2589 free_tlist(origline
);
2590 return DIRECTIVE_FOUND
;
2598 "`%%%smacro': already defining a macro",
2599 (i
== PP_IMACRO
? "i" : ""));
2600 /* todo: change the above as well... */
2601 return DIRECTIVE_FOUND
;
2603 defining
= nasm_malloc(sizeof(MMacro
));
2604 defining
->max_depth
= (((i
== PP_RMACRO
) || (i
== PP_RIMACRO
)) ? 65536 : 0);
2605 defining
->casesense
= ((i
== PP_MACRO
) || (i
== PP_RMACRO
));
2606 if (!parse_mmacro_spec(tline
, defining
, pp_directives
[i
])) {
2607 nasm_free(defining
);
2609 return DIRECTIVE_FOUND
;
2612 mmac
= (MMacro
*) hash_findix(&mmacros
, defining
->name
);
2614 if (!strcmp(mmac
->name
, defining
->name
) &&
2615 (mmac
->nparam_min
<= defining
->nparam_max
2617 && (defining
->nparam_min
<= mmac
->nparam_max
2619 error(ERR_WARNING
|ERR_PASS1
,
2620 "redefining multi-line macro `%s'", defining
->name
);
2621 return DIRECTIVE_FOUND
;
2625 free_tlist(origline
);
2626 return DIRECTIVE_FOUND
;
2630 if (! (defining
&& defining
->name
)) {
2631 error(ERR_NONFATAL
, "`%s': not defining a macro", tline
->text
);
2632 return DIRECTIVE_FOUND
;
2634 mmhead
= (MMacro
**) hash_findi_add(&mmacros
, defining
->name
);
2635 defining
->next
= *mmhead
;
2638 free_tlist(origline
);
2639 return DIRECTIVE_FOUND
;
2647 spec
.casesense
= (i
== PP_UNMACRO
);
2648 if (!parse_mmacro_spec(tline
, &spec
, pp_directives
[i
])) {
2649 return DIRECTIVE_FOUND
;
2651 mmac_p
= (MMacro
**) hash_findi(&mmacros
, spec
.name
, NULL
);
2652 while (mmac_p
&& *mmac_p
) {
2654 if (mmac
->casesense
== spec
.casesense
&&
2655 !mstrcmp(mmac
->name
, spec
.name
, spec
.casesense
) &&
2656 mmac
->nparam_min
== spec
.nparam_min
&&
2657 mmac
->nparam_max
== spec
.nparam_max
&&
2658 mmac
->plus
== spec
.plus
) {
2659 *mmac_p
= mmac
->next
;
2662 mmac_p
= &mmac
->next
;
2665 free_tlist(origline
);
2666 free_tlist(spec
.dlist
);
2667 return DIRECTIVE_FOUND
;
2671 if (tline
->next
&& tline
->next
->type
== TOK_WHITESPACE
)
2672 tline
= tline
->next
;
2673 if (tline
->next
== NULL
) {
2674 free_tlist(origline
);
2675 error(ERR_NONFATAL
, "`%%rotate' missing rotate count");
2676 return DIRECTIVE_FOUND
;
2678 t
= expand_smacro(tline
->next
);
2680 free_tlist(origline
);
2683 tokval
.t_type
= TOKEN_INVALID
;
2685 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
2688 return DIRECTIVE_FOUND
;
2690 error(ERR_WARNING
|ERR_PASS1
,
2691 "trailing garbage after expression ignored");
2692 if (!is_simple(evalresult
)) {
2693 error(ERR_NONFATAL
, "non-constant value given to `%%rotate'");
2694 return DIRECTIVE_FOUND
;
2697 while (mmac
&& !mmac
->name
) /* avoid mistaking %reps for macros */
2698 mmac
= mmac
->next_active
;
2700 error(ERR_NONFATAL
, "`%%rotate' invoked outside a macro call");
2701 } else if (mmac
->nparam
== 0) {
2703 "`%%rotate' invoked within macro without parameters");
2705 int rotate
= mmac
->rotate
+ reloc_value(evalresult
);
2707 rotate
%= (int)mmac
->nparam
;
2709 rotate
+= mmac
->nparam
;
2711 mmac
->rotate
= rotate
;
2713 return DIRECTIVE_FOUND
;
2718 tline
= tline
->next
;
2719 } while (tok_type_(tline
, TOK_WHITESPACE
));
2721 if (tok_type_(tline
, TOK_ID
) &&
2722 nasm_stricmp(tline
->text
, ".nolist") == 0) {
2725 tline
= tline
->next
;
2726 } while (tok_type_(tline
, TOK_WHITESPACE
));
2730 t
= expand_smacro(tline
);
2732 tokval
.t_type
= TOKEN_INVALID
;
2734 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
2736 free_tlist(origline
);
2737 return DIRECTIVE_FOUND
;
2740 error(ERR_WARNING
|ERR_PASS1
,
2741 "trailing garbage after expression ignored");
2742 if (!is_simple(evalresult
)) {
2743 error(ERR_NONFATAL
, "non-constant value given to `%%rep'");
2744 return DIRECTIVE_FOUND
;
2746 count
= reloc_value(evalresult
) + 1;
2748 error(ERR_NONFATAL
, "`%%rep' expects a repeat count");
2751 free_tlist(origline
);
2753 tmp_defining
= defining
;
2754 defining
= nasm_malloc(sizeof(MMacro
));
2755 defining
->prev
= NULL
;
2756 defining
->name
= NULL
; /* flags this macro as a %rep block */
2757 defining
->casesense
= false;
2758 defining
->plus
= false;
2759 defining
->nolist
= nolist
;
2760 defining
->in_progress
= count
;
2761 defining
->max_depth
= 0;
2762 defining
->nparam_min
= defining
->nparam_max
= 0;
2763 defining
->defaults
= NULL
;
2764 defining
->dlist
= NULL
;
2765 defining
->expansion
= NULL
;
2766 defining
->next_active
= istk
->mstk
;
2767 defining
->rep_nest
= tmp_defining
;
2768 return DIRECTIVE_FOUND
;
2771 if (!defining
|| defining
->name
) {
2772 error(ERR_NONFATAL
, "`%%endrep': no matching `%%rep'");
2773 return DIRECTIVE_FOUND
;
2777 * Now we have a "macro" defined - although it has no name
2778 * and we won't be entering it in the hash tables - we must
2779 * push a macro-end marker for it on to istk->expansion.
2780 * After that, it will take care of propagating itself (a
2781 * macro-end marker line for a macro which is really a %rep
2782 * block will cause the macro to be re-expanded, complete
2783 * with another macro-end marker to ensure the process
2784 * continues) until the whole expansion is forcibly removed
2785 * from istk->expansion by a %exitrep.
2787 l
= nasm_malloc(sizeof(Line
));
2788 l
->next
= istk
->expansion
;
2789 l
->finishes
= defining
;
2791 istk
->expansion
= l
;
2793 istk
->mstk
= defining
;
2795 list
->uplevel(defining
->nolist
? LIST_MACRO_NOLIST
: LIST_MACRO
);
2796 tmp_defining
= defining
;
2797 defining
= defining
->rep_nest
;
2798 free_tlist(origline
);
2799 return DIRECTIVE_FOUND
;
2803 * We must search along istk->expansion until we hit a
2804 * macro-end marker for a macro with no name. Then we set
2805 * its `in_progress' flag to 0.
2807 for (l
= istk
->expansion
; l
; l
= l
->next
)
2808 if (l
->finishes
&& !l
->finishes
->name
)
2812 l
->finishes
->in_progress
= 1;
2814 error(ERR_NONFATAL
, "`%%exitrep' not within `%%rep' block");
2815 free_tlist(origline
);
2816 return DIRECTIVE_FOUND
;
2822 casesense
= (i
== PP_DEFINE
|| i
== PP_XDEFINE
);
2824 tline
= tline
->next
;
2826 tline
= expand_id(tline
);
2827 if (!tline
|| (tline
->type
!= TOK_ID
&&
2828 (tline
->type
!= TOK_PREPROC_ID
||
2829 tline
->text
[1] != '$'))) {
2830 error(ERR_NONFATAL
, "`%s' expects a macro identifier",
2832 free_tlist(origline
);
2833 return DIRECTIVE_FOUND
;
2836 ctx
= get_ctx(tline
->text
, &mname
, false);
2838 param_start
= tline
= tline
->next
;
2841 /* Expand the macro definition now for %xdefine and %ixdefine */
2842 if ((i
== PP_XDEFINE
) || (i
== PP_IXDEFINE
))
2843 tline
= expand_smacro(tline
);
2845 if (tok_is_(tline
, "(")) {
2847 * This macro has parameters.
2850 tline
= tline
->next
;
2854 error(ERR_NONFATAL
, "parameter identifier expected");
2855 free_tlist(origline
);
2856 return DIRECTIVE_FOUND
;
2858 if (tline
->type
!= TOK_ID
) {
2860 "`%s': parameter identifier expected",
2862 free_tlist(origline
);
2863 return DIRECTIVE_FOUND
;
2865 tline
->type
= TOK_SMAC_PARAM
+ nparam
++;
2866 tline
= tline
->next
;
2868 if (tok_is_(tline
, ",")) {
2869 tline
= tline
->next
;
2871 if (!tok_is_(tline
, ")")) {
2873 "`)' expected to terminate macro template");
2874 free_tlist(origline
);
2875 return DIRECTIVE_FOUND
;
2881 tline
= tline
->next
;
2883 if (tok_type_(tline
, TOK_WHITESPACE
))
2884 last
= tline
, tline
= tline
->next
;
2889 if (t
->type
== TOK_ID
) {
2890 for (tt
= param_start
; tt
; tt
= tt
->next
)
2891 if (tt
->type
>= TOK_SMAC_PARAM
&&
2892 !strcmp(tt
->text
, t
->text
))
2896 t
->next
= macro_start
;
2901 * Good. We now have a macro name, a parameter count, and a
2902 * token list (in reverse order) for an expansion. We ought
2903 * to be OK just to create an SMacro, store it, and let
2904 * free_tlist have the rest of the line (which we have
2905 * carefully re-terminated after chopping off the expansion
2908 define_smacro(ctx
, mname
, casesense
, nparam
, macro_start
);
2909 free_tlist(origline
);
2910 return DIRECTIVE_FOUND
;
2913 tline
= tline
->next
;
2915 tline
= expand_id(tline
);
2916 if (!tline
|| (tline
->type
!= TOK_ID
&&
2917 (tline
->type
!= TOK_PREPROC_ID
||
2918 tline
->text
[1] != '$'))) {
2919 error(ERR_NONFATAL
, "`%%undef' expects a macro identifier");
2920 free_tlist(origline
);
2921 return DIRECTIVE_FOUND
;
2924 error(ERR_WARNING
|ERR_PASS1
,
2925 "trailing garbage after macro name ignored");
2928 /* Find the context that symbol belongs to */
2929 ctx
= get_ctx(tline
->text
, &mname
, false);
2930 undef_smacro(ctx
, mname
);
2931 free_tlist(origline
);
2932 return DIRECTIVE_FOUND
;
2936 casesense
= (i
== PP_DEFSTR
);
2938 tline
= tline
->next
;
2940 tline
= expand_id(tline
);
2941 if (!tline
|| (tline
->type
!= TOK_ID
&&
2942 (tline
->type
!= TOK_PREPROC_ID
||
2943 tline
->text
[1] != '$'))) {
2944 error(ERR_NONFATAL
, "`%s' expects a macro identifier",
2946 free_tlist(origline
);
2947 return DIRECTIVE_FOUND
;
2950 ctx
= get_ctx(tline
->text
, &mname
, false);
2952 tline
= expand_smacro(tline
->next
);
2955 while (tok_type_(tline
, TOK_WHITESPACE
))
2956 tline
= delete_Token(tline
);
2958 p
= detoken(tline
, false);
2959 macro_start
= nasm_malloc(sizeof(*macro_start
));
2960 macro_start
->next
= NULL
;
2961 macro_start
->text
= nasm_quote(p
, strlen(p
));
2962 macro_start
->type
= TOK_STRING
;
2963 macro_start
->a
.mac
= NULL
;
2967 * We now have a macro name, an implicit parameter count of
2968 * zero, and a string token to use as an expansion. Create
2969 * and store an SMacro.
2971 define_smacro(ctx
, mname
, casesense
, 0, macro_start
);
2972 free_tlist(origline
);
2973 return DIRECTIVE_FOUND
;
2978 StrList
*xsl
= NULL
;
2979 StrList
**xst
= &xsl
;
2983 tline
= tline
->next
;
2985 tline
= expand_id(tline
);
2986 if (!tline
|| (tline
->type
!= TOK_ID
&&
2987 (tline
->type
!= TOK_PREPROC_ID
||
2988 tline
->text
[1] != '$'))) {
2990 "`%%pathsearch' expects a macro identifier as first parameter");
2991 free_tlist(origline
);
2992 return DIRECTIVE_FOUND
;
2994 ctx
= get_ctx(tline
->text
, &mname
, false);
2996 tline
= expand_smacro(tline
->next
);
3000 while (tok_type_(t
, TOK_WHITESPACE
))
3003 if (!t
|| (t
->type
!= TOK_STRING
&&
3004 t
->type
!= TOK_INTERNAL_STRING
)) {
3005 error(ERR_NONFATAL
, "`%%pathsearch' expects a file name");
3007 free_tlist(origline
);
3008 return DIRECTIVE_FOUND
; /* but we did _something_ */
3011 error(ERR_WARNING
|ERR_PASS1
,
3012 "trailing garbage after `%%pathsearch' ignored");
3014 if (t
->type
!= TOK_INTERNAL_STRING
)
3015 nasm_unquote(p
, NULL
);
3017 fp
= inc_fopen(p
, &xsl
, &xst
, true);
3020 fclose(fp
); /* Don't actually care about the file */
3022 macro_start
= nasm_malloc(sizeof(*macro_start
));
3023 macro_start
->next
= NULL
;
3024 macro_start
->text
= nasm_quote(p
, strlen(p
));
3025 macro_start
->type
= TOK_STRING
;
3026 macro_start
->a
.mac
= NULL
;
3031 * We now have a macro name, an implicit parameter count of
3032 * zero, and a string token to use as an expansion. Create
3033 * and store an SMacro.
3035 define_smacro(ctx
, mname
, casesense
, 0, macro_start
);
3037 free_tlist(origline
);
3038 return DIRECTIVE_FOUND
;
3044 tline
= tline
->next
;
3046 tline
= expand_id(tline
);
3047 if (!tline
|| (tline
->type
!= TOK_ID
&&
3048 (tline
->type
!= TOK_PREPROC_ID
||
3049 tline
->text
[1] != '$'))) {
3051 "`%%strlen' expects a macro identifier as first parameter");
3052 free_tlist(origline
);
3053 return DIRECTIVE_FOUND
;
3055 ctx
= get_ctx(tline
->text
, &mname
, false);
3057 tline
= expand_smacro(tline
->next
);
3061 while (tok_type_(t
, TOK_WHITESPACE
))
3063 /* t should now point to the string */
3064 if (t
->type
!= TOK_STRING
) {
3066 "`%%strlen` requires string as second parameter");
3068 free_tlist(origline
);
3069 return DIRECTIVE_FOUND
;
3072 macro_start
= nasm_malloc(sizeof(*macro_start
));
3073 macro_start
->next
= NULL
;
3074 make_tok_num(macro_start
, nasm_unquote(t
->text
, NULL
));
3075 macro_start
->a
.mac
= NULL
;
3078 * We now have a macro name, an implicit parameter count of
3079 * zero, and a numeric token to use as an expansion. Create
3080 * and store an SMacro.
3082 define_smacro(ctx
, mname
, casesense
, 0, macro_start
);
3084 free_tlist(origline
);
3085 return DIRECTIVE_FOUND
;
3090 tline
= tline
->next
;
3092 tline
= expand_id(tline
);
3093 if (!tline
|| (tline
->type
!= TOK_ID
&&
3094 (tline
->type
!= TOK_PREPROC_ID
||
3095 tline
->text
[1] != '$'))) {
3097 "`%%strcat' expects a macro identifier as first parameter");
3098 free_tlist(origline
);
3099 return DIRECTIVE_FOUND
;
3101 ctx
= get_ctx(tline
->text
, &mname
, false);
3103 tline
= expand_smacro(tline
->next
);
3107 for (t
= tline
; t
; t
= t
->next
) {
3109 case TOK_WHITESPACE
:
3112 len
+= t
->a
.len
= nasm_unquote(t
->text
, NULL
);
3115 if (!strcmp(t
->text
, ",")) /* permit comma separators */
3117 /* else fall through */
3120 "non-string passed to `%%strcat' (%d)", t
->type
);
3122 free_tlist(origline
);
3123 return DIRECTIVE_FOUND
;
3127 p
= pp
= nasm_malloc(len
);
3129 for (t
= tline
; t
; t
= t
->next
) {
3130 if (t
->type
== TOK_STRING
) {
3131 memcpy(p
, t
->text
, t
->a
.len
);
3137 * We now have a macro name, an implicit parameter count of
3138 * zero, and a numeric token to use as an expansion. Create
3139 * and store an SMacro.
3141 macro_start
= new_Token(NULL
, TOK_STRING
, NULL
, 0);
3142 macro_start
->text
= nasm_quote(pp
, len
);
3144 define_smacro(ctx
, mname
, casesense
, 0, macro_start
);
3146 free_tlist(origline
);
3147 return DIRECTIVE_FOUND
;
3156 tline
= tline
->next
;
3158 tline
= expand_id(tline
);
3159 if (!tline
|| (tline
->type
!= TOK_ID
&&
3160 (tline
->type
!= TOK_PREPROC_ID
||
3161 tline
->text
[1] != '$'))) {
3163 "`%%substr' expects a macro identifier as first parameter");
3164 free_tlist(origline
);
3165 return DIRECTIVE_FOUND
;
3167 ctx
= get_ctx(tline
->text
, &mname
, false);
3169 tline
= expand_smacro(tline
->next
);
3173 while (tok_type_(t
, TOK_WHITESPACE
))
3176 /* t should now point to the string */
3177 if (t
->type
!= TOK_STRING
) {
3179 "`%%substr` requires string as second parameter");
3181 free_tlist(origline
);
3182 return DIRECTIVE_FOUND
;
3187 tokval
.t_type
= TOKEN_INVALID
;
3188 evalresult
= evaluate(ppscan
, tptr
, &tokval
, NULL
,
3192 free_tlist(origline
);
3193 return DIRECTIVE_FOUND
;
3194 } else if (!is_simple(evalresult
)) {
3195 error(ERR_NONFATAL
, "non-constant value given to `%%substr`");
3197 free_tlist(origline
);
3198 return DIRECTIVE_FOUND
;
3200 a1
= evalresult
->value
-1;
3202 while (tok_type_(tt
, TOK_WHITESPACE
))
3205 a2
= 1; /* Backwards compatibility: one character */
3207 tokval
.t_type
= TOKEN_INVALID
;
3208 evalresult
= evaluate(ppscan
, tptr
, &tokval
, NULL
,
3212 free_tlist(origline
);
3213 return DIRECTIVE_FOUND
;
3214 } else if (!is_simple(evalresult
)) {
3215 error(ERR_NONFATAL
, "non-constant value given to `%%substr`");
3217 free_tlist(origline
);
3218 return DIRECTIVE_FOUND
;
3220 a2
= evalresult
->value
;
3223 len
= nasm_unquote(t
->text
, NULL
);
3226 if (a1
+a2
> (int64_t)len
)
3229 macro_start
= nasm_malloc(sizeof(*macro_start
));
3230 macro_start
->next
= NULL
;
3231 macro_start
->text
= nasm_quote((a1
< 0) ? "" : t
->text
+a1
, a2
);
3232 macro_start
->type
= TOK_STRING
;
3233 macro_start
->a
.mac
= NULL
;
3236 * We now have a macro name, an implicit parameter count of
3237 * zero, and a numeric token to use as an expansion. Create
3238 * and store an SMacro.
3240 define_smacro(ctx
, mname
, casesense
, 0, macro_start
);
3242 free_tlist(origline
);
3243 return DIRECTIVE_FOUND
;
3248 casesense
= (i
== PP_ASSIGN
);
3250 tline
= tline
->next
;
3252 tline
= expand_id(tline
);
3253 if (!tline
|| (tline
->type
!= TOK_ID
&&
3254 (tline
->type
!= TOK_PREPROC_ID
||
3255 tline
->text
[1] != '$'))) {
3257 "`%%%sassign' expects a macro identifier",
3258 (i
== PP_IASSIGN
? "i" : ""));
3259 free_tlist(origline
);
3260 return DIRECTIVE_FOUND
;
3262 ctx
= get_ctx(tline
->text
, &mname
, false);
3264 tline
= expand_smacro(tline
->next
);
3269 tokval
.t_type
= TOKEN_INVALID
;
3271 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
3274 free_tlist(origline
);
3275 return DIRECTIVE_FOUND
;
3279 error(ERR_WARNING
|ERR_PASS1
,
3280 "trailing garbage after expression ignored");
3282 if (!is_simple(evalresult
)) {
3284 "non-constant value given to `%%%sassign'",
3285 (i
== PP_IASSIGN
? "i" : ""));
3286 free_tlist(origline
);
3287 return DIRECTIVE_FOUND
;
3290 macro_start
= nasm_malloc(sizeof(*macro_start
));
3291 macro_start
->next
= NULL
;
3292 make_tok_num(macro_start
, reloc_value(evalresult
));
3293 macro_start
->a
.mac
= NULL
;
3296 * We now have a macro name, an implicit parameter count of
3297 * zero, and a numeric token to use as an expansion. Create
3298 * and store an SMacro.
3300 define_smacro(ctx
, mname
, casesense
, 0, macro_start
);
3301 free_tlist(origline
);
3302 return DIRECTIVE_FOUND
;
3306 * Syntax is `%line nnn[+mmm] [filename]'
3308 tline
= tline
->next
;
3310 if (!tok_type_(tline
, TOK_NUMBER
)) {
3311 error(ERR_NONFATAL
, "`%%line' expects line number");
3312 free_tlist(origline
);
3313 return DIRECTIVE_FOUND
;
3315 k
= readnum(tline
->text
, &err
);
3317 tline
= tline
->next
;
3318 if (tok_is_(tline
, "+")) {
3319 tline
= tline
->next
;
3320 if (!tok_type_(tline
, TOK_NUMBER
)) {
3321 error(ERR_NONFATAL
, "`%%line' expects line increment");
3322 free_tlist(origline
);
3323 return DIRECTIVE_FOUND
;
3325 m
= readnum(tline
->text
, &err
);
3326 tline
= tline
->next
;
3332 nasm_free(src_set_fname(detoken(tline
, false)));
3334 free_tlist(origline
);
3335 return DIRECTIVE_FOUND
;
3339 "preprocessor directive `%s' not yet implemented",
3341 return DIRECTIVE_FOUND
;
3346 * Ensure that a macro parameter contains a condition code and
3347 * nothing else. Return the condition code index if so, or -1
3350 static int find_cc(Token
* t
)
3356 return -1; /* Probably a %+ without a space */
3359 if (t
->type
!= TOK_ID
)
3363 if (tt
&& (tt
->type
!= TOK_OTHER
|| strcmp(tt
->text
, ",")))
3367 j
= elements(conditions
);
3370 m
= nasm_stricmp(t
->text
, conditions
[k
]);
3385 static bool paste_tokens(Token
**head
, bool handle_paste_tokens
)
3387 Token
**tail
, *t
, *tt
;
3389 bool did_paste
= false;
3392 /* Now handle token pasting... */
3395 while ((t
= *tail
) && (tt
= t
->next
)) {
3397 case TOK_WHITESPACE
:
3398 if (tt
->type
== TOK_WHITESPACE
) {
3399 /* Zap adjacent whitespace tokens */
3400 t
->next
= delete_Token(tt
);
3402 /* Do not advance paste_head here */
3407 case TOK_PREPROC_ID
:
3414 while (tt
&& (tt
->type
== TOK_ID
|| tt
->type
== TOK_PREPROC_ID
||
3415 tt
->type
== TOK_NUMBER
|| tt
->type
== TOK_FLOAT
||
3416 tt
->type
== TOK_OTHER
)) {
3417 len
+= strlen(tt
->text
);
3421 /* Now tt points to the first token after the potential
3423 if (tt
!= t
->next
) {
3424 /* We have at least two tokens... */
3425 len
+= strlen(t
->text
);
3426 p
= tmp
= nasm_malloc(len
+1);
3430 p
= strchr(p
, '\0');
3431 t
= delete_Token(t
);
3434 t
= *tail
= tokenize(tmp
);
3441 t
->next
= tt
; /* Attach the remaining token chain */
3449 case TOK_PASTE
: /* %+ */
3450 if (handle_paste_tokens
) {
3451 /* Zap %+ and whitespace tokens to the right */
3452 while (t
&& (t
->type
== TOK_WHITESPACE
||
3453 t
->type
== TOK_PASTE
))
3454 t
= *tail
= delete_Token(t
);
3455 if (!paste_head
|| !t
)
3456 break; /* Nothing to paste with */
3460 while (tok_type_(tt
, TOK_WHITESPACE
))
3461 tt
= t
->next
= delete_Token(tt
);
3464 tmp
= nasm_strcat(t
->text
, tt
->text
);
3466 tt
= delete_Token(tt
);
3467 t
= *tail
= tokenize(tmp
);
3473 t
->next
= tt
; /* Attach the remaining token chain */
3480 /* else fall through */
3482 tail
= paste_head
= &t
->next
;
3489 * Expand MMacro-local things: parameter references (%0, %n, %+n,
3490 * %-n) and MMacro-local identifiers (%%foo) as well as
3491 * macro indirection (%[...]).
3493 static Token
*expand_mmac_params(Token
* tline
)
3495 Token
*t
, *tt
, **tail
, *thead
;
3496 bool changed
= false;
3502 if (tline
->type
== TOK_PREPROC_ID
&&
3503 (((tline
->text
[1] == '+' || tline
->text
[1] == '-')
3504 && tline
->text
[2]) || tline
->text
[1] == '%'
3505 || (tline
->text
[1] >= '0' && tline
->text
[1] <= '9'))) {
3507 int type
= 0, cc
; /* type = 0 to placate optimisers */
3514 tline
= tline
->next
;
3517 while (mac
&& !mac
->name
) /* avoid mistaking %reps for macros */
3518 mac
= mac
->next_active
;
3520 error(ERR_NONFATAL
, "`%s': not in a macro call", t
->text
);
3522 switch (t
->text
[1]) {
3524 * We have to make a substitution of one of the
3525 * forms %1, %-1, %+1, %%foo, %0.
3529 snprintf(tmpbuf
, sizeof(tmpbuf
), "%d", mac
->nparam
);
3530 text
= nasm_strdup(tmpbuf
);
3534 snprintf(tmpbuf
, sizeof(tmpbuf
), "..@%"PRIu64
".",
3536 text
= nasm_strcat(tmpbuf
, t
->text
+ 2);
3539 n
= atoi(t
->text
+ 2) - 1;
3540 if (n
>= mac
->nparam
)
3543 if (mac
->nparam
> 1)
3544 n
= (n
+ mac
->rotate
) % mac
->nparam
;
3545 tt
= mac
->params
[n
];
3550 "macro parameter %d is not a condition code",
3555 if (inverse_ccs
[cc
] == -1) {
3557 "condition code `%s' is not invertible",
3561 text
= nasm_strdup(conditions
[inverse_ccs
[cc
]]);
3565 n
= atoi(t
->text
+ 2) - 1;
3566 if (n
>= mac
->nparam
)
3569 if (mac
->nparam
> 1)
3570 n
= (n
+ mac
->rotate
) % mac
->nparam
;
3571 tt
= mac
->params
[n
];
3576 "macro parameter %d is not a condition code",
3581 text
= nasm_strdup(conditions
[cc
]);
3585 n
= atoi(t
->text
+ 1) - 1;
3586 if (n
>= mac
->nparam
)
3589 if (mac
->nparam
> 1)
3590 n
= (n
+ mac
->rotate
) % mac
->nparam
;
3591 tt
= mac
->params
[n
];
3594 for (i
= 0; i
< mac
->paramlen
[n
]; i
++) {
3595 *tail
= new_Token(NULL
, tt
->type
, tt
->text
, 0);
3596 tail
= &(*tail
)->next
;
3600 text
= NULL
; /* we've done it here */
3615 } else if (tline
->type
== TOK_INDIRECT
) {
3617 tline
= tline
->next
;
3618 tt
= tokenize(t
->text
);
3619 tt
= expand_mmac_params(tt
);
3620 tt
= expand_smacro(tt
);
3623 tt
->a
.mac
= NULL
; /* Necessary? */
3631 tline
= tline
->next
;
3639 paste_tokens(&thead
, false);
3645 * Expand all single-line macro calls made in the given line.
3646 * Return the expanded version of the line. The original is deemed
3647 * to be destroyed in the process. (In reality we'll just move
3648 * Tokens from input to output a lot of the time, rather than
3649 * actually bothering to destroy and replicate.)
3651 #define DEADMAN_LIMIT (1 << 20)
3653 static Token
*expand_smacro(Token
* tline
)
3655 Token
*t
, *tt
, *mstart
, **tail
, *thead
;
3656 struct hash_table
*smtbl
;
3657 SMacro
*head
= NULL
, *m
;
3660 unsigned int nparam
, sparam
;
3662 Token
*org_tline
= tline
;
3665 int deadman
= DEADMAN_LIMIT
;
3669 * Trick: we should avoid changing the start token pointer since it can
3670 * be contained in "next" field of other token. Because of this
3671 * we allocate a copy of first token and work with it; at the end of
3672 * routine we copy it back
3676 new_Token(org_tline
->next
, org_tline
->type
, org_tline
->text
,
3678 tline
->a
.mac
= org_tline
->a
.mac
;
3679 nasm_free(org_tline
->text
);
3680 org_tline
->text
= NULL
;
3683 expanded
= true; /* Always expand %+ at least once */
3689 while (tline
) { /* main token loop */
3691 error(ERR_NONFATAL
, "interminable macro recursion");
3695 if ((mname
= tline
->text
)) {
3696 /* if this token is a local macro, look in local context */
3697 if (tline
->type
== TOK_ID
|| tline
->type
== TOK_PREPROC_ID
)
3698 ctx
= get_ctx(mname
, &mname
, true);
3701 smtbl
= ctx
? &ctx
->localmac
: &smacros
;
3702 head
= (SMacro
*) hash_findix(smtbl
, mname
);
3705 * We've hit an identifier. As in is_mmacro below, we first
3706 * check whether the identifier is a single-line macro at
3707 * all, then think about checking for parameters if
3710 for (m
= head
; m
; m
= m
->next
)
3711 if (!mstrcmp(m
->name
, mname
, m
->casesense
))
3717 if (m
->nparam
== 0) {
3719 * Simple case: the macro is parameterless. Discard the
3720 * one token that the macro call took, and push the
3721 * expansion back on the to-do stack.
3723 if (!m
->expansion
) {
3724 if (!strcmp("__FILE__", m
->name
)) {
3727 src_get(&num
, &file
);
3728 tline
->text
= nasm_quote(file
, strlen(file
));
3729 tline
->type
= TOK_STRING
;
3733 if (!strcmp("__LINE__", m
->name
)) {
3734 nasm_free(tline
->text
);
3735 make_tok_num(tline
, src_get_linnum());
3738 if (!strcmp("__BITS__", m
->name
)) {
3739 nasm_free(tline
->text
);
3740 make_tok_num(tline
, globalbits
);
3743 tline
= delete_Token(tline
);
3748 * Complicated case: at least one macro with this name
3749 * exists and takes parameters. We must find the
3750 * parameters in the call, count them, find the SMacro
3751 * that corresponds to that form of the macro call, and
3752 * substitute for the parameters when we expand. What a
3755 /*tline = tline->next;
3756 skip_white_(tline); */
3759 while (tok_type_(t
, TOK_SMAC_END
)) {
3760 t
->a
.mac
->in_progress
= false;
3762 t
= tline
->next
= delete_Token(t
);
3765 } while (tok_type_(tline
, TOK_WHITESPACE
));
3766 if (!tok_is_(tline
, "(")) {
3768 * This macro wasn't called with parameters: ignore
3769 * the call. (Behaviour borrowed from gnu cpp.)
3778 sparam
= PARAM_DELTA
;
3779 params
= nasm_malloc(sparam
* sizeof(Token
*));
3780 params
[0] = tline
->next
;
3781 paramsize
= nasm_malloc(sparam
* sizeof(int));
3783 while (true) { /* parameter loop */
3785 * For some unusual expansions
3786 * which concatenates function call
3789 while (tok_type_(t
, TOK_SMAC_END
)) {
3790 t
->a
.mac
->in_progress
= false;
3792 t
= tline
->next
= delete_Token(t
);
3798 "macro call expects terminating `)'");
3801 if (tline
->type
== TOK_WHITESPACE
3803 if (paramsize
[nparam
])
3806 params
[nparam
] = tline
->next
;
3807 continue; /* parameter loop */
3809 if (tline
->type
== TOK_OTHER
3810 && tline
->text
[1] == 0) {
3811 char ch
= tline
->text
[0];
3812 if (ch
== ',' && !paren
&& brackets
<= 0) {
3813 if (++nparam
>= sparam
) {
3814 sparam
+= PARAM_DELTA
;
3815 params
= nasm_realloc(params
,
3820 nasm_realloc(paramsize
,
3824 params
[nparam
] = tline
->next
;
3825 paramsize
[nparam
] = 0;
3827 continue; /* parameter loop */
3830 (brackets
> 0 || (brackets
== 0 &&
3831 !paramsize
[nparam
])))
3833 if (!(brackets
++)) {
3834 params
[nparam
] = tline
->next
;
3835 continue; /* parameter loop */
3838 if (ch
== '}' && brackets
> 0)
3839 if (--brackets
== 0) {
3841 continue; /* parameter loop */
3843 if (ch
== '(' && !brackets
)
3845 if (ch
== ')' && brackets
<= 0)
3851 error(ERR_NONFATAL
, "braces do not "
3852 "enclose all of macro parameter");
3854 paramsize
[nparam
] += white
+ 1;
3856 } /* parameter loop */
3858 while (m
&& (m
->nparam
!= nparam
||
3859 mstrcmp(m
->name
, mname
,
3863 error(ERR_WARNING
|ERR_PASS1
|ERR_WARN_MNP
,
3864 "macro `%s' exists, "
3865 "but not taking %d parameters",
3866 mstart
->text
, nparam
);
3869 if (m
&& m
->in_progress
)
3871 if (!m
) { /* in progess or didn't find '(' or wrong nparam */
3873 * Design question: should we handle !tline, which
3874 * indicates missing ')' here, or expand those
3875 * macros anyway, which requires the (t) test a few
3879 nasm_free(paramsize
);
3883 * Expand the macro: we are placed on the last token of the
3884 * call, so that we can easily split the call from the
3885 * following tokens. We also start by pushing an SMAC_END
3886 * token for the cycle removal.
3893 tt
= new_Token(tline
, TOK_SMAC_END
, NULL
, 0);
3895 m
->in_progress
= true;
3897 for (t
= m
->expansion
; t
; t
= t
->next
) {
3898 if (t
->type
>= TOK_SMAC_PARAM
) {
3899 Token
*pcopy
= tline
, **ptail
= &pcopy
;
3903 ttt
= params
[t
->type
- TOK_SMAC_PARAM
];
3904 for (i
= paramsize
[t
->type
- TOK_SMAC_PARAM
];
3907 new_Token(tline
, ttt
->type
, ttt
->text
,
3913 } else if (t
->type
== TOK_PREPROC_Q
) {
3914 tt
= new_Token(tline
, TOK_ID
, mname
, 0);
3916 } else if (t
->type
== TOK_PREPROC_QQ
) {
3917 tt
= new_Token(tline
, TOK_ID
, m
->name
, 0);
3920 tt
= new_Token(tline
, t
->type
, t
->text
, 0);
3926 * Having done that, get rid of the macro call, and clean
3927 * up the parameters.
3930 nasm_free(paramsize
);
3933 continue; /* main token loop */
3938 if (tline
->type
== TOK_SMAC_END
) {
3939 tline
->a
.mac
->in_progress
= false;
3940 tline
= delete_Token(tline
);
3943 tline
= tline
->next
;
3951 * Now scan the entire line and look for successive TOK_IDs that resulted
3952 * after expansion (they can't be produced by tokenize()). The successive
3953 * TOK_IDs should be concatenated.
3954 * Also we look for %+ tokens and concatenate the tokens before and after
3955 * them (without white spaces in between).
3957 if (expanded
&& paste_tokens(&thead
, true)) {
3959 * If we concatenated something, *and* we had previously expanded
3960 * an actual macro, scan the lines again for macros...
3969 *org_tline
= *thead
;
3970 /* since we just gave text to org_line, don't free it */
3972 delete_Token(thead
);
3974 /* the expression expanded to empty line;
3975 we can't return NULL for some reasons
3976 we just set the line to a single WHITESPACE token. */
3977 memset(org_tline
, 0, sizeof(*org_tline
));
3978 org_tline
->text
= NULL
;
3979 org_tline
->type
= TOK_WHITESPACE
;
3988 * Similar to expand_smacro but used exclusively with macro identifiers
3989 * right before they are fetched in. The reason is that there can be
3990 * identifiers consisting of several subparts. We consider that if there
3991 * are more than one element forming the name, user wants a expansion,
3992 * otherwise it will be left as-is. Example:
3996 * the identifier %$abc will be left as-is so that the handler for %define
3997 * will suck it and define the corresponding value. Other case:
3999 * %define _%$abc cde
4001 * In this case user wants name to be expanded *before* %define starts
4002 * working, so we'll expand %$abc into something (if it has a value;
4003 * otherwise it will be left as-is) then concatenate all successive
4006 static Token
*expand_id(Token
* tline
)
4008 Token
*cur
, *oldnext
= NULL
;
4010 if (!tline
|| !tline
->next
)
4015 (cur
->next
->type
== TOK_ID
||
4016 cur
->next
->type
== TOK_PREPROC_ID
4017 || cur
->next
->type
== TOK_NUMBER
))
4020 /* If identifier consists of just one token, don't expand */
4025 oldnext
= cur
->next
; /* Detach the tail past identifier */
4026 cur
->next
= NULL
; /* so that expand_smacro stops here */
4029 tline
= expand_smacro(tline
);
4032 /* expand_smacro possibly changhed tline; re-scan for EOL */
4034 while (cur
&& cur
->next
)
4037 cur
->next
= oldnext
;
4044 * Determine whether the given line constitutes a multi-line macro
4045 * call, and return the MMacro structure called if so. Doesn't have
4046 * to check for an initial label - that's taken care of in
4047 * expand_mmacro - but must check numbers of parameters. Guaranteed
4048 * to be called with tline->type == TOK_ID, so the putative macro
4049 * name is easy to find.
4051 static MMacro
*is_mmacro(Token
* tline
, Token
*** params_array
)
4057 head
= (MMacro
*) hash_findix(&mmacros
, tline
->text
);
4060 * Efficiency: first we see if any macro exists with the given
4061 * name. If not, we can return NULL immediately. _Then_ we
4062 * count the parameters, and then we look further along the
4063 * list if necessary to find the proper MMacro.
4065 for (m
= head
; m
; m
= m
->next
)
4066 if (!mstrcmp(m
->name
, tline
->text
, m
->casesense
))
4072 * OK, we have a potential macro. Count and demarcate the
4075 count_mmac_params(tline
->next
, &nparam
, ¶ms
);
4078 * So we know how many parameters we've got. Find the MMacro
4079 * structure that handles this number.
4082 if (m
->nparam_min
<= nparam
4083 && (m
->plus
|| nparam
<= m
->nparam_max
)) {
4085 * This one is right. Just check if cycle removal
4086 * prohibits us using it before we actually celebrate...
4088 if (m
->in_progress
> m
->max_depth
) {
4089 if (m
->max_depth
> 0) {
4091 "reached maximum recursion depth of %i",
4098 * It's right, and we can use it. Add its default
4099 * parameters to the end of our list if necessary.
4101 if (m
->defaults
&& nparam
< m
->nparam_min
+ m
->ndefs
) {
4103 nasm_realloc(params
,
4104 ((m
->nparam_min
+ m
->ndefs
+
4105 1) * sizeof(*params
)));
4106 while (nparam
< m
->nparam_min
+ m
->ndefs
) {
4107 params
[nparam
] = m
->defaults
[nparam
- m
->nparam_min
];
4112 * If we've gone over the maximum parameter count (and
4113 * we're in Plus mode), ignore parameters beyond
4116 if (m
->plus
&& nparam
> m
->nparam_max
)
4117 nparam
= m
->nparam_max
;
4119 * Then terminate the parameter list, and leave.
4121 if (!params
) { /* need this special case */
4122 params
= nasm_malloc(sizeof(*params
));
4125 params
[nparam
] = NULL
;
4126 *params_array
= params
;
4130 * This one wasn't right: look for the next one with the
4133 for (m
= m
->next
; m
; m
= m
->next
)
4134 if (!mstrcmp(m
->name
, tline
->text
, m
->casesense
))
4139 * After all that, we didn't find one with the right number of
4140 * parameters. Issue a warning, and fail to expand the macro.
4142 error(ERR_WARNING
|ERR_PASS1
|ERR_WARN_MNP
,
4143 "macro `%s' exists, but not taking %d parameters",
4144 tline
->text
, nparam
);
4151 * Save MMacro invocation specific fields in
4152 * preparation for a recursive macro expansion
4154 static void push_mmacro(MMacro
*m
)
4156 MMacroInvocation
*i
;
4158 i
= nasm_malloc(sizeof(MMacroInvocation
));
4160 i
->params
= m
->params
;
4161 i
->iline
= m
->iline
;
4162 i
->nparam
= m
->nparam
;
4163 i
->rotate
= m
->rotate
;
4164 i
->paramlen
= m
->paramlen
;
4165 i
->unique
= m
->unique
;
4171 * Restore MMacro invocation specific fields that were
4172 * saved during a previous recursive macro expansion
4174 static void pop_mmacro(MMacro
*m
)
4176 MMacroInvocation
*i
;
4178 if(m
->prev
!= NULL
){
4181 m
->params
= i
->params
;
4182 m
->iline
= i
->iline
;
4183 m
->nparam
= i
->nparam
;
4184 m
->rotate
= i
->rotate
;
4185 m
->paramlen
= i
->paramlen
;
4186 m
->unique
= i
->unique
;
4193 * Expand the multi-line macro call made by the given line, if
4194 * there is one to be expanded. If there is, push the expansion on
4195 * istk->expansion and return 1. Otherwise return 0.
4197 static int expand_mmacro(Token
* tline
)
4199 Token
*startline
= tline
;
4200 Token
*label
= NULL
;
4201 int dont_prepend
= 0;
4202 Token
**params
, *t
, *mtok
, *tt
;
4205 int i
, nparam
, *paramlen
;
4210 /* if (!tok_type_(t, TOK_ID)) Lino 02/25/02 */
4211 if (!tok_type_(t
, TOK_ID
) && !tok_type_(t
, TOK_PREPROC_ID
))
4214 m
= is_mmacro(t
, ¶ms
);
4220 * We have an id which isn't a macro call. We'll assume
4221 * it might be a label; we'll also check to see if a
4222 * colon follows it. Then, if there's another id after
4223 * that lot, we'll check it again for macro-hood.
4227 if (tok_type_(t
, TOK_WHITESPACE
))
4228 last
= t
, t
= t
->next
;
4229 if (tok_is_(t
, ":")) {
4231 last
= t
, t
= t
->next
;
4232 if (tok_type_(t
, TOK_WHITESPACE
))
4233 last
= t
, t
= t
->next
;
4235 if (!tok_type_(t
, TOK_ID
) || (m
= is_mmacro(t
, ¶ms
)) == NULL
)
4243 * Fix up the parameters: this involves stripping leading and
4244 * trailing whitespace, then stripping braces if they are
4247 for (nparam
= 0; params
[nparam
]; nparam
++) ;
4248 paramlen
= nparam
? nasm_malloc(nparam
* sizeof(*paramlen
)) : NULL
;
4250 for (i
= 0; params
[i
]; i
++) {
4252 int comma
= (!m
->plus
|| i
< nparam
- 1);
4256 if (tok_is_(t
, "{"))
4257 t
= t
->next
, brace
= true, comma
= false;
4261 if (comma
&& t
->type
== TOK_OTHER
&& !strcmp(t
->text
, ","))
4262 break; /* ... because we have hit a comma */
4263 if (comma
&& t
->type
== TOK_WHITESPACE
4264 && tok_is_(t
->next
, ","))
4265 break; /* ... or a space then a comma */
4266 if (brace
&& t
->type
== TOK_OTHER
&& !strcmp(t
->text
, "}"))
4267 break; /* ... or a brace */
4274 * OK, we have a MMacro structure together with a set of
4275 * parameters. We must now go through the expansion and push
4276 * copies of each Line on to istk->expansion. Substitution of
4277 * parameter tokens and macro-local tokens doesn't get done
4278 * until the single-line macro substitution process; this is
4279 * because delaying them allows us to change the semantics
4280 * later through %rotate.
4282 * First, push an end marker on to istk->expansion, mark this
4283 * macro as in progress, and set up its invocation-specific
4286 ll
= nasm_malloc(sizeof(Line
));
4287 ll
->next
= istk
->expansion
;
4290 istk
->expansion
= ll
;
4293 * Save the previous MMacro expansion in the case of
4296 if (m
->max_depth
&& m
->in_progress
)
4304 m
->paramlen
= paramlen
;
4305 m
->unique
= unique
++;
4308 m
->next_active
= istk
->mstk
;
4311 for (l
= m
->expansion
; l
; l
= l
->next
) {
4314 ll
= nasm_malloc(sizeof(Line
));
4315 ll
->finishes
= NULL
;
4316 ll
->next
= istk
->expansion
;
4317 istk
->expansion
= ll
;
4320 for (t
= l
->first
; t
; t
= t
->next
) {
4324 tt
= *tail
= new_Token(NULL
, TOK_ID
, mname
, 0);
4326 case TOK_PREPROC_QQ
:
4327 tt
= *tail
= new_Token(NULL
, TOK_ID
, m
->name
, 0);
4329 case TOK_PREPROC_ID
:
4330 if (t
->text
[1] == '0' && t
->text
[2] == '0') {
4338 tt
= *tail
= new_Token(NULL
, x
->type
, x
->text
, 0);
4347 * If we had a label, push it on as the first line of
4348 * the macro expansion.
4351 if (dont_prepend
< 0)
4352 free_tlist(startline
);
4354 ll
= nasm_malloc(sizeof(Line
));
4355 ll
->finishes
= NULL
;
4356 ll
->next
= istk
->expansion
;
4357 istk
->expansion
= ll
;
4358 ll
->first
= startline
;
4359 if (!dont_prepend
) {
4361 label
= label
->next
;
4362 label
->next
= tt
= new_Token(NULL
, TOK_OTHER
, ":", 0);
4367 list
->uplevel(m
->nolist
? LIST_MACRO_NOLIST
: LIST_MACRO
);
4372 /* The function that actually does the error reporting */
4373 static void verror(int severity
, const char *fmt
, va_list arg
)
4377 vsnprintf(buff
, sizeof(buff
), fmt
, arg
);
4379 if (istk
&& istk
->mstk
&& istk
->mstk
->name
)
4380 _error(severity
, "(%s:%d) %s", istk
->mstk
->name
,
4381 istk
->mstk
->lineno
, buff
);
4383 _error(severity
, "%s", buff
);
4387 * Since preprocessor always operate only on the line that didn't
4388 * arrived yet, we should always use ERR_OFFBY1.
4390 static void error(int severity
, const char *fmt
, ...)
4394 /* If we're in a dead branch of IF or something like it, ignore the error */
4395 if (istk
&& istk
->conds
&& !emitting(istk
->conds
->state
))
4399 verror(severity
, fmt
, arg
);
4404 * Because %else etc are evaluated in the state context
4405 * of the previous branch, errors might get lost with error():
4406 * %if 0 ... %else trailing garbage ... %endif
4407 * So %else etc should report errors with this function.
4409 static void error_precond(int severity
, const char *fmt
, ...)
4413 /* Only ignore the error if it's really in a dead branch */
4414 if (istk
&& istk
->conds
&& istk
->conds
->state
== COND_NEVER
)
4418 verror(severity
, fmt
, arg
);
4423 pp_reset(char *file
, int apass
, efunc errfunc
, evalfunc eval
,
4424 ListGen
* listgen
, StrList
**deplist
)
4430 istk
= nasm_malloc(sizeof(Include
));
4433 istk
->expansion
= NULL
;
4435 istk
->fp
= fopen(file
, "r");
4437 src_set_fname(nasm_strdup(file
));
4441 error(ERR_FATAL
|ERR_NOFILE
, "unable to open input file `%s'",
4444 nested_mac_count
= 0;
4445 nested_rep_count
= 0;
4448 if (tasm_compatible_mode
) {
4449 stdmacpos
= nasm_stdmac
;
4451 stdmacpos
= nasm_stdmac_after_tasm
;
4453 any_extrastdmac
= extrastdmac
&& *extrastdmac
;
4459 * 0 for dependencies, 1 for preparatory passes, 2 for final pass.
4460 * The caller, however, will also pass in 3 for preprocess-only so
4461 * we can set __PASS__ accordingly.
4463 pass
= apass
> 2 ? 2 : apass
;
4465 dephead
= deptail
= deplist
;
4467 StrList
*sl
= nasm_malloc(strlen(file
)+1+sizeof sl
->next
);
4469 strcpy(sl
->str
, file
);
4471 deptail
= &sl
->next
;
4475 * Define the __PASS__ macro. This is defined here unlike
4476 * all the other builtins, because it is special -- it varies between
4479 t
= nasm_malloc(sizeof(*t
));
4481 make_tok_num(t
, apass
);
4483 define_smacro(NULL
, "__PASS__", true, 0, t
);
4486 static char *pp_getline(void)
4493 * Fetch a tokenized line, either from the macro-expansion
4494 * buffer or from the input file.
4497 while (istk
->expansion
&& istk
->expansion
->finishes
) {
4498 Line
*l
= istk
->expansion
;
4499 if (!l
->finishes
->name
&& l
->finishes
->in_progress
> 1) {
4503 * This is a macro-end marker for a macro with no
4504 * name, which means it's not really a macro at all
4505 * but a %rep block, and the `in_progress' field is
4506 * more than 1, meaning that we still need to
4507 * repeat. (1 means the natural last repetition; 0
4508 * means termination by %exitrep.) We have
4509 * therefore expanded up to the %endrep, and must
4510 * push the whole block on to the expansion buffer
4511 * again. We don't bother to remove the macro-end
4512 * marker: we'd only have to generate another one
4515 l
->finishes
->in_progress
--;
4516 for (l
= l
->finishes
->expansion
; l
; l
= l
->next
) {
4517 Token
*t
, *tt
, **tail
;
4519 ll
= nasm_malloc(sizeof(Line
));
4520 ll
->next
= istk
->expansion
;
4521 ll
->finishes
= NULL
;
4525 for (t
= l
->first
; t
; t
= t
->next
) {
4526 if (t
->text
|| t
->type
== TOK_WHITESPACE
) {
4528 new_Token(NULL
, t
->type
, t
->text
, 0);
4533 istk
->expansion
= ll
;
4537 * Check whether a `%rep' was started and not ended
4538 * within this macro expansion. This can happen and
4539 * should be detected. It's a fatal error because
4540 * I'm too confused to work out how to recover
4546 "defining with name in expansion");
4547 else if (istk
->mstk
->name
)
4549 "`%%rep' without `%%endrep' within"
4550 " expansion of macro `%s'",
4555 * FIXME: investigate the relationship at this point between
4556 * istk->mstk and l->finishes
4559 MMacro
*m
= istk
->mstk
;
4560 istk
->mstk
= m
->next_active
;
4563 * This was a real macro call, not a %rep, and
4564 * therefore the parameter information needs to
4567 if (m
->prev
!= NULL
) {
4570 nasm_free(m
->params
);
4571 free_tlist(m
->iline
);
4572 nasm_free(m
->paramlen
);
4574 l
->finishes
->in_progress
--;
4578 istk
->expansion
= l
->next
;
4580 list
->downlevel(LIST_MACRO
);
4583 while (1) { /* until we get a line we can use */
4585 if (istk
->expansion
) { /* from a macro expansion */
4587 Line
*l
= istk
->expansion
;
4589 istk
->mstk
->lineno
++;
4591 istk
->expansion
= l
->next
;
4593 p
= detoken(tline
, false);
4594 list
->line(LIST_MACRO
, p
);
4599 if (line
) { /* from the current input file */
4600 line
= prepreproc(line
);
4601 tline
= tokenize(line
);
4606 * The current file has ended; work down the istk
4613 "expected `%%endif' before end of file");
4614 /* only set line and file name if there's a next node */
4616 src_set_linnum(i
->lineno
);
4617 nasm_free(src_set_fname(i
->fname
));
4620 list
->downlevel(LIST_INCLUDE
);
4624 if (istk
->expansion
&& istk
->expansion
->finishes
)
4630 * We must expand MMacro parameters and MMacro-local labels
4631 * _before_ we plunge into directive processing, to cope
4632 * with things like `%define something %1' such as STRUC
4633 * uses. Unless we're _defining_ a MMacro, in which case
4634 * those tokens should be left alone to go into the
4635 * definition; and unless we're in a non-emitting
4636 * condition, in which case we don't want to meddle with
4639 if (!defining
&& !(istk
->conds
&& !emitting(istk
->conds
->state
))
4640 && !(istk
->mstk
&& !istk
->mstk
->in_progress
)) {
4641 tline
= expand_mmac_params(tline
);
4645 * Check the line to see if it's a preprocessor directive.
4647 if (do_directive(tline
) == DIRECTIVE_FOUND
) {
4649 } else if (defining
) {
4651 * We're defining a multi-line macro. We emit nothing
4653 * shove the tokenized line on to the macro definition.
4655 Line
*l
= nasm_malloc(sizeof(Line
));
4656 l
->next
= defining
->expansion
;
4659 defining
->expansion
= l
;
4661 } else if (istk
->conds
&& !emitting(istk
->conds
->state
)) {
4663 * We're in a non-emitting branch of a condition block.
4664 * Emit nothing at all, not even a blank line: when we
4665 * emerge from the condition we'll give a line-number
4666 * directive so we keep our place correctly.
4670 } else if (istk
->mstk
&& !istk
->mstk
->in_progress
) {
4672 * We're in a %rep block which has been terminated, so
4673 * we're walking through to the %endrep without
4674 * emitting anything. Emit nothing at all, not even a
4675 * blank line: when we emerge from the %rep block we'll
4676 * give a line-number directive so we keep our place
4682 tline
= expand_smacro(tline
);
4683 if (!expand_mmacro(tline
)) {
4685 * De-tokenize the line again, and emit it.
4687 line
= detoken(tline
, true);
4691 continue; /* expand_mmacro calls free_tlist */
4699 static void pp_cleanup(int pass
)
4702 if(defining
->name
) {
4704 "end of file while still defining macro `%s'",
4707 error(ERR_NONFATAL
, "end of file while still in %%rep");
4710 free_mmacro(defining
);
4719 nasm_free(i
->fname
);
4724 nasm_free(src_set_fname(NULL
));
4729 while ((i
= ipath
)) {
4738 void pp_include_path(char *path
)
4742 i
= nasm_malloc(sizeof(IncPath
));
4743 i
->path
= path
? nasm_strdup(path
) : NULL
;
4746 if (ipath
!= NULL
) {
4748 while (j
->next
!= NULL
)
4756 void pp_pre_include(char *fname
)
4758 Token
*inc
, *space
, *name
;
4761 name
= new_Token(NULL
, TOK_INTERNAL_STRING
, fname
, 0);
4762 space
= new_Token(name
, TOK_WHITESPACE
, NULL
, 0);
4763 inc
= new_Token(space
, TOK_PREPROC_ID
, "%include", 0);
4765 l
= nasm_malloc(sizeof(Line
));
4772 void pp_pre_define(char *definition
)
4778 equals
= strchr(definition
, '=');
4779 space
= new_Token(NULL
, TOK_WHITESPACE
, NULL
, 0);
4780 def
= new_Token(space
, TOK_PREPROC_ID
, "%define", 0);
4783 space
->next
= tokenize(definition
);
4787 l
= nasm_malloc(sizeof(Line
));
4794 void pp_pre_undefine(char *definition
)
4799 space
= new_Token(NULL
, TOK_WHITESPACE
, NULL
, 0);
4800 def
= new_Token(space
, TOK_PREPROC_ID
, "%undef", 0);
4801 space
->next
= tokenize(definition
);
4803 l
= nasm_malloc(sizeof(Line
));
4811 * Added by Keith Kanios:
4813 * This function is used to assist with "runtime" preprocessor
4814 * directives. (e.g. pp_runtime("%define __BITS__ 64");)
4816 * ERRORS ARE IGNORED HERE, SO MAKE COMPLETELY SURE THAT YOU
4817 * PASS A VALID STRING TO THIS FUNCTION!!!!!
4820 void pp_runtime(char *definition
)
4824 def
= tokenize(definition
);
4825 if(do_directive(def
) == NO_DIRECTIVE_FOUND
)
4830 void pp_extra_stdmac(macros_t
*macros
)
4832 extrastdmac
= macros
;
4835 static void make_tok_num(Token
* tok
, int64_t val
)
4838 snprintf(numbuf
, sizeof(numbuf
), "%"PRId64
"", val
);
4839 tok
->text
= nasm_strdup(numbuf
);
4840 tok
->type
= TOK_NUMBER
;