1 /* -*- mode: c; c-file-style: "bsd" -*- */
2 /* preproc.c macro preprocessor for the Netwide Assembler
4 * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
5 * Julian Hall. All rights reserved. The software is
6 * redistributable under the licence given in the file "Licence"
7 * distributed in the NASM archive.
9 * initial version 18/iii/97 by Simon Tatham
12 /* Typical flow of text through preproc
14 * pp_getline gets tokenised lines, either
16 * from a macro expansion
20 * read_line gets raw text from stdmacpos, or predef, or current input file
21 * tokenise converts to tokens
24 * expand_mmac_params is used to expand %1 etc., unless a macro is being
25 * defined or a false conditional is being processed
26 * (%0, %1, %+1, %-1, %%foo
28 * do_directive checks for directives
30 * expand_smacro is used to expand single line macros
32 * expand_mmacro is used to expand multi-line macros
34 * detoken is used to convert the line back to text
48 typedef struct SMacro SMacro
;
49 typedef struct MMacro MMacro
;
50 typedef struct Context Context
;
51 typedef struct Token Token
;
52 typedef struct Blocks Blocks
;
53 typedef struct Line Line
;
54 typedef struct Include Include
;
55 typedef struct Cond Cond
;
56 typedef struct IncPath IncPath
;
59 * Store the definition of a single-line macro.
72 * Store the definition of a multi-line macro. This is also used to
73 * store the interiors of `%rep...%endrep' blocks, which are
74 * effectively self-re-invoking multi-line macros which simply
75 * don't have a name or bother to appear in the hash tables. %rep
76 * blocks are signified by having a NULL `name' field.
78 * In a MMacro describing a `%rep' block, the `in_progress' field
79 * isn't merely boolean, but gives the number of repeats left to
82 * The `next' field is used for storing MMacros in hash tables; the
83 * `next_active' field is for stacking them on istk entries.
85 * When a MMacro is being expanded, `params', `iline', `nparam',
86 * `paramlen', `rotate' and `unique' are local to the invocation.
93 int nparam_min
, nparam_max
;
94 int plus
; /* is the last parameter greedy? */
95 int nolist
; /* is this macro listing-inhibited? */
97 Token
*dlist
; /* All defaults as one list */
98 Token
**defaults
; /* Parameter default pointers */
99 int ndefs
; /* number of default parameters */
103 MMacro
*rep_nest
; /* used for nesting %rep */
104 Token
**params
; /* actual parameters */
105 Token
*iline
; /* invocation line */
106 int nparam
, rotate
, *paramlen
;
107 unsigned long unique
;
108 int lineno
; /* Current line number on expansion */
112 * The context stack is composed of a linked list of these.
119 unsigned long number
;
123 * This is the internal form which we break input lines up into.
124 * Typically stored in linked lists.
126 * Note that `type' serves a double meaning: TOK_SMAC_PARAM is not
127 * necessarily used as-is, but is intended to denote the number of
128 * the substituted parameter. So in the definition
130 * %define a(x,y) ( (x) & ~(y) )
132 * the token representing `x' will have its type changed to
133 * TOK_SMAC_PARAM, but the one representing `y' will be
136 * TOK_INTERNAL_STRING is a dirty hack: it's a single string token
137 * which doesn't need quotes around it. Used in the pre-include
138 * mechanism as an alternative to trying to find a sensible type of
139 * quote to use on the filename we were passed.
145 SMacro
*mac
; /* associated macro for TOK_SMAC_END */
150 TOK_WHITESPACE
= 1, TOK_COMMENT
, TOK_ID
, TOK_PREPROC_ID
, TOK_STRING
,
151 TOK_NUMBER
, TOK_SMAC_END
, TOK_OTHER
, TOK_SMAC_PARAM
,
156 * Multi-line macro definitions are stored as a linked list of
157 * these, which is essentially a container to allow several linked
160 * Note that in this module, linked lists are treated as stacks
161 * wherever possible. For this reason, Lines are _pushed_ on to the
162 * `expansion' field in MMacro structures, so that the linked list,
163 * if walked, would give the macro lines in reverse order; this
164 * means that we can walk the list when expanding a macro, and thus
165 * push the lines on to the `expansion' field in _istk_ in reverse
166 * order (so that when popped back off they are in the right
167 * order). It may seem cockeyed, and it relies on my design having
168 * an even number of steps in, but it works...
170 * Some of these structures, rather than being actual lines, are
171 * markers delimiting the end of the expansion of a given macro.
172 * This is for use in the cycle-tracking and %rep-handling code.
173 * Such structures have `finishes' non-NULL, and `first' NULL. All
174 * others have `finishes' NULL, but `first' may still be NULL if
185 * To handle an arbitrary level of file inclusion, we maintain a
186 * stack (ie linked list) of these things.
196 MMacro
*mstk
; /* stack of active macros/reps */
200 * Include search path. This is simply a list of strings which get
201 * prepended, in turn, to the name of an include file, in an
202 * attempt to find the file if it's not in the current directory.
211 * Conditional assembly: we maintain a separate stack of these for
212 * each level of file inclusion. (The only reason we keep the
213 * stacks separate is to ensure that a stray `%endif' in a file
214 * included from within the true branch of a `%if' won't terminate
215 * it and cause confusion: instead, rightly, it'll cause an error.)
225 * These states are for use just after %if or %elif: IF_TRUE
226 * means the condition has evaluated to truth so we are
227 * currently emitting, whereas IF_FALSE means we are not
228 * currently emitting but will start doing so if a %else comes
229 * up. In these states, all directives are admissible: %elif,
230 * %else and %endif. (And of course %if.)
232 COND_IF_TRUE
, COND_IF_FALSE
,
234 * These states come up after a %else: ELSE_TRUE means we're
235 * emitting, and ELSE_FALSE means we're not. In ELSE_* states,
236 * any %elif or %else will cause an error.
238 COND_ELSE_TRUE
, COND_ELSE_FALSE
,
240 * This state means that we're not emitting now, and also that
241 * nothing until %endif will be emitted at all. It's for use in
242 * two circumstances: (i) when we've had our moment of emission
243 * and have now started seeing %elifs, and (ii) when the
244 * condition construct in question is contained within a
245 * non-emitting branch of a larger condition construct.
249 #define emitting(x) ( (x) == COND_IF_TRUE || (x) == COND_ELSE_TRUE )
252 * These defines are used as the possible return values for do_directive
254 #define NO_DIRECTIVE_FOUND 0
255 #define DIRECTIVE_FOUND 1
258 * Condition codes. Note that we use c_ prefix not C_ because C_ is
259 * used in nasm.h for the "real" condition codes. At _this_ level,
260 * we treat CXZ and ECXZ as condition codes, albeit non-invertible
261 * ones, so we need a different enum...
263 static const char *conditions
[] = {
264 "a", "ae", "b", "be", "c", "cxz", "e", "ecxz", "g", "ge", "l", "le",
265 "na", "nae", "nb", "nbe", "nc", "ne", "ng", "nge", "nl", "nle", "no",
266 "np", "ns", "nz", "o", "p", "pe", "po", "s", "z"
270 c_A
, c_AE
, c_B
, c_BE
, c_C
, c_CXZ
, c_E
, c_ECXZ
, c_G
, c_GE
, c_L
, c_LE
,
271 c_NA
, c_NAE
, c_NB
, c_NBE
, c_NC
, c_NE
, c_NG
, c_NGE
, c_NL
, c_NLE
, c_NO
,
272 c_NP
, c_NS
, c_NZ
, c_O
, c_P
, c_PE
, c_PO
, c_S
, c_Z
274 static int inverse_ccs
[] = {
275 c_NA
, c_NAE
, c_NB
, c_NBE
, c_NC
, -1, c_NE
, -1, c_NG
, c_NGE
, c_NL
, c_NLE
,
276 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
,
277 c_Z
, c_NO
, c_NP
, c_PO
, c_PE
, c_NS
, c_NZ
283 static const char *directives
[] = {
285 "%assign", "%clear", "%define", "%elif", "%elifctx", "%elifdef",
286 "%elifid", "%elifidn", "%elifidni", "%elifmacro", "%elifnctx", "%elifndef",
287 "%elifnid", "%elifnidn", "%elifnidni", "%elifnmacro", "%elifnnum", "%elifnstr",
288 "%elifnum", "%elifstr", "%else", "%endif", "%endm", "%endmacro",
289 "%endrep", "%error", "%exitrep", "%iassign", "%idefine", "%if",
290 "%ifctx", "%ifdef", "%ifid", "%ifidn", "%ifidni", "%ifmacro", "%ifnctx",
291 "%ifndef", "%ifnid", "%ifnidn", "%ifnidni", "%ifnmacro", "%ifnnum",
292 "%ifnstr", "%ifnum", "%ifstr", "%imacro", "%include",
293 "%ixdefine", "%line",
295 "%macro", "%pop", "%push", "%rep", "%repl", "%rotate",
297 "%strlen", "%substr", "%undef", "%xdefine"
302 PP_ASSIGN
, PP_CLEAR
, PP_DEFINE
, PP_ELIF
, PP_ELIFCTX
, PP_ELIFDEF
,
303 PP_ELIFID
, PP_ELIFIDN
, PP_ELIFIDNI
, PP_ELIFMACRO
, PP_ELIFNCTX
, PP_ELIFNDEF
,
304 PP_ELIFNID
, PP_ELIFNIDN
, PP_ELIFNIDNI
, PP_ELIFNMACRO
, PP_ELIFNNUM
, PP_ELIFNSTR
,
305 PP_ELIFNUM
, PP_ELIFSTR
, PP_ELSE
, PP_ENDIF
, PP_ENDM
, PP_ENDMACRO
,
306 PP_ENDREP
, PP_ERROR
, PP_EXITREP
, PP_IASSIGN
, PP_IDEFINE
, PP_IF
,
307 PP_IFCTX
, PP_IFDEF
, PP_IFID
, PP_IFIDN
, PP_IFIDNI
, PP_IFMACRO
, PP_IFNCTX
,
308 PP_IFNDEF
, PP_IFNID
, PP_IFNIDN
, PP_IFNIDNI
, PP_IFNMACRO
, PP_IFNNUM
,
309 PP_IFNSTR
, PP_IFNUM
, PP_IFSTR
, PP_IMACRO
, PP_INCLUDE
,
310 PP_IXDEFINE
, PP_LINE
,
312 PP_MACRO
, PP_POP
, PP_PUSH
, PP_REP
, PP_REPL
, PP_ROTATE
,
314 PP_STRLEN
, PP_SUBSTR
, PP_UNDEF
, PP_XDEFINE
317 /* If this is a an IF, ELIF, ELSE or ENDIF keyword */
318 static int is_condition(int arg
)
320 return ((arg
>= PP_ELIF
) && (arg
<= PP_ENDIF
)) ||
321 ((arg
>= PP_IF
) && (arg
<= PP_IFSTR
));
324 /* For TASM compatibility we need to be able to recognise TASM compatible
325 * conditional compilation directives. Using the NASM pre-processor does
326 * not work, so we look for them specifically from the following list and
327 * then jam in the equivalent NASM directive into the input stream.
331 # define MAX(a,b) ( ((a) > (b)) ? (a) : (b))
336 TM_ARG
, TM_ELIF
, TM_ELSE
, TM_ENDIF
, TM_IF
, TM_IFDEF
, TM_IFDIFI
,
337 TM_IFNDEF
, TM_INCLUDE
, TM_LOCAL
340 static const char *tasm_directives
[] = {
341 "arg", "elif", "else", "endif", "if", "ifdef", "ifdifi",
342 "ifndef", "include", "local"
345 static int StackSize
= 4;
346 static char *StackPointer
= "ebp";
347 static int ArgOffset
= 8;
348 static int LocalOffset
= 4;
351 static Context
*cstk
;
352 static Include
*istk
;
353 static IncPath
*ipath
= NULL
;
355 static efunc _error
; /* Pointer to client-provided error reporting function */
356 static evalfunc evaluate
;
358 static int pass
; /* HACK: pass 0 = generate dependencies only */
360 static unsigned long unique
; /* unique identifier numbers */
362 static Line
*predef
= NULL
;
364 static ListGen
*list
;
367 * The number of hash values we use for the macro lookup tables.
368 * FIXME: We should *really* be able to configure this at run time,
369 * or even have the hash table automatically expanding when necessary.
374 * The current set of multi-line macros we have defined.
376 static MMacro
*mmacros
[NHASH
];
379 * The current set of single-line macros we have defined.
381 static SMacro
*smacros
[NHASH
];
384 * The multi-line macro we are currently defining, or the %rep
385 * block we are currently reading, if any.
387 static MMacro
*defining
;
390 * The number of macro parameters to allocate space for at a time.
392 #define PARAM_DELTA 16
395 * The standard macro set: defined as `static char *stdmac[]'. Also
396 * gives our position in the macro set, when we're processing it.
399 static const char **stdmacpos
;
402 * The extra standard macros that come from the object format, if
405 static const char **extrastdmac
= NULL
;
409 * Tokens are allocated in blocks to improve speed
411 #define TOKEN_BLOCKSIZE 4096
412 static Token
*freeTokens
= NULL
;
418 static Blocks blocks
= { NULL
, NULL
};
421 * Forward declarations.
423 static Token
*expand_mmac_params(Token
* tline
);
424 static Token
*expand_smacro(Token
* tline
);
425 static Token
*expand_id(Token
* tline
);
426 static Context
*get_ctx(char *name
, int all_contexts
);
427 static void make_tok_num(Token
* tok
, long val
);
428 static void error(int severity
, const char *fmt
, ...);
429 static void *new_Block(size_t size
);
430 static void delete_Blocks(void);
431 static Token
*new_Token(Token
* next
, int type
, char *text
, int txtlen
);
432 static Token
*delete_Token(Token
* t
);
435 * Macros for safe checking of token pointers, avoid *(NULL)
437 #define tok_type_(x,t) ((x) && (x)->type == (t))
438 #define skip_white_(x) if (tok_type_((x), TOK_WHITESPACE)) (x)=(x)->next
439 #define tok_is_(x,v) (tok_type_((x), TOK_OTHER) && !strcmp((x)->text,(v)))
440 #define tok_isnt_(x,v) ((x) && ((x)->type!=TOK_OTHER || strcmp((x)->text,(v))))
442 /* Handle TASM specific directives, which do not contain a % in
443 * front of them. We do it here because I could not find any other
444 * place to do it for the moment, and it is a hack (ideally it would
445 * be nice to be able to use the NASM pre-processor to do it).
448 check_tasm_directive(char *line
)
451 char *p
= line
, *oldline
, oldchar
;
453 /* Skip whitespace */
454 while (isspace(*p
) && *p
!= 0)
457 /* Binary search for the directive name */
459 j
= elements(tasm_directives
);
461 while (!isspace(p
[len
]) && p
[len
] != 0)
470 m
= nasm_stricmp(p
, tasm_directives
[k
]);
473 /* We have found a directive, so jam a % in front of it
474 * so that NASM will then recognise it as one if it's own.
479 line
= nasm_malloc(len
+ 2);
483 /* NASM does not recognise IFDIFI, so we convert it to
484 * %ifdef BOGUS. This is not used in NASM comaptible
485 * code, but does need to parse for the TASM macro
488 strcpy(line
+ 1, "ifdef BOGUS");
492 memcpy(line
+ 1, p
, len
+ 1);
510 * The pre-preprocessing stage... This function translates line
511 * number indications as they emerge from GNU cpp (`# lineno "file"
512 * flags') into NASM preprocessor line number indications (`%line
516 prepreproc(char *line
)
519 char *fname
, *oldline
;
521 if (line
[0] == '#' && line
[1] == ' ')
525 lineno
= atoi(fname
);
526 fname
+= strspn(fname
, "0123456789 ");
529 fnlen
= strcspn(fname
, "\"");
530 line
= nasm_malloc(20 + fnlen
);
531 sprintf(line
, "%%line %d %.*s", lineno
, fnlen
, fname
);
534 if (tasm_compatible_mode
)
535 return check_tasm_directive(line
);
540 * The hash function for macro lookups. Note that due to some
541 * macros having case-insensitive names, the hash function must be
542 * invariant under case changes. We implement this by applying a
543 * perfectly normal hash function to the uppercase of the string.
551 * Powers of three, mod 31.
553 static const int multipliers
[] = {
554 1, 3, 9, 27, 19, 26, 16, 17, 20, 29, 25, 13, 8, 24, 10,
555 30, 28, 22, 4, 12, 5, 15, 14, 11, 2, 6, 18, 23, 7, 21
561 h
+= multipliers
[i
] * (unsigned char) (toupper(*s
));
563 if (++i
>= elements(multipliers
))
571 * Free a linked list of tokens.
574 free_tlist(Token
* list
)
578 list
= delete_Token(list
);
583 * Free a linked list of lines.
586 free_llist(Line
* list
)
593 free_tlist(l
->first
);
602 free_mmacro(MMacro
* m
)
605 free_tlist(m
->dlist
);
606 nasm_free(m
->defaults
);
607 free_llist(m
->expansion
);
612 * Pop the context stack.
627 free_tlist(s
->expansion
);
634 #define BUF_DELTA 512
636 * Read a line from the top file in istk, handling multiple CR/LFs
637 * at the end of the line read, and handling spurious ^Zs. Will
638 * return lines from the standard macro set if this has not already
644 char *buffer
, *p
, *q
;
645 int bufsize
, continued_count
;
651 char *ret
= nasm_strdup(*stdmacpos
++);
652 if (!*stdmacpos
&& any_extrastdmac
)
654 stdmacpos
= extrastdmac
;
655 any_extrastdmac
= FALSE
;
659 * Nasty hack: here we push the contents of `predef' on
660 * to the top-level expansion stack, since this is the
661 * most convenient way to implement the pre-include and
662 * pre-define features.
667 Token
*head
, **tail
, *t
;
669 for (pd
= predef
; pd
; pd
= pd
->next
)
673 for (t
= pd
->first
; t
; t
= t
->next
)
675 *tail
= new_Token(NULL
, t
->type
, t
->text
, 0);
676 tail
= &(*tail
)->next
;
678 l
= nasm_malloc(sizeof(Line
));
679 l
->next
= istk
->expansion
;
694 buffer
= nasm_malloc(BUF_DELTA
);
699 q
= fgets(p
, bufsize
- (p
- buffer
), istk
->fp
);
703 if (p
> buffer
&& p
[-1] == '\n')
705 /* Convert backslash-CRLF line continuation sequences into
706 nothing at all (for DOS and Windows) */
707 if (((p
- 2) > buffer
) && (p
[-3] == '\\') && (p
[-2] == '\r')) {
712 /* Also convert backslash-LF line continuation sequences into
713 nothing at all (for Unix) */
714 else if (((p
- 1) > buffer
) && (p
[-2] == '\\')) {
723 if (p
- buffer
> bufsize
- 10)
725 long offset
= p
- buffer
;
726 bufsize
+= BUF_DELTA
;
727 buffer
= nasm_realloc(buffer
, bufsize
);
728 p
= buffer
+ offset
; /* prevent stale-pointer problems */
732 if (!q
&& p
== buffer
)
738 src_set_linnum(src_get_linnum() + istk
->lineinc
+ (continued_count
* istk
->lineinc
));
741 * Play safe: remove CRs as well as LFs, if any of either are
742 * present at the end of the line.
744 while (--p
>= buffer
&& (*p
== '\n' || *p
== '\r'))
748 * Handle spurious ^Z, which may be inserted into source files
749 * by some file transfer utilities.
751 buffer
[strcspn(buffer
, "\032")] = '\0';
753 list
->line(LIST_READ
, buffer
);
759 * Tokenise a line of text. This is a very simple process since we
760 * don't need to parse the value out of e.g. numeric tokens: we
761 * simply split one string into many.
769 Token
*t
, **tail
= &list
;
778 ((*p
== '-' || *p
== '+') && isdigit(p
[1])) ||
779 ((*p
== '+') && (isspace(p
[1]) || !p
[1])))
786 type
= TOK_PREPROC_ID
;
791 while (*p
&& *p
!= '}')
799 type
= TOK_PREPROC_ID
;
801 else if (isidchar(*p
) ||
802 ((*p
== '!' || *p
== '%' || *p
== '$') &&
809 while (isidchar(*p
));
810 type
= TOK_PREPROC_ID
;
819 else if (isidstart(*p
) || (*p
== '$' && isidstart(p
[1])))
823 while (*p
&& isidchar(*p
))
826 else if (*p
== '\'' || *p
== '"')
834 while (*p
&& *p
!= c
)
842 error(ERR_WARNING
, "unterminated string");
845 else if (isnumstart(*p
))
852 while (*p
&& isnumchar(*p
))
855 else if (isspace(*p
))
857 type
= TOK_WHITESPACE
;
859 while (*p
&& isspace(*p
))
862 * Whitespace just before end-of-line is discarded by
863 * pretending it's a comment; whitespace just before a
864 * comment gets lumped into the comment.
866 if (!*p
|| *p
== ';')
882 * Anything else is an operator of some kind. We check
883 * for all the double-character operators (>>, <<, //,
884 * %%, <=, >=, ==, !=, <>, &&, ||, ^^), but anything
885 * else is a single-character operator.
888 if ((p
[0] == '>' && p
[1] == '>') ||
889 (p
[0] == '<' && p
[1] == '<') ||
890 (p
[0] == '/' && p
[1] == '/') ||
891 (p
[0] == '<' && p
[1] == '=') ||
892 (p
[0] == '>' && p
[1] == '=') ||
893 (p
[0] == '=' && p
[1] == '=') ||
894 (p
[0] == '!' && p
[1] == '=') ||
895 (p
[0] == '<' && p
[1] == '>') ||
896 (p
[0] == '&' && p
[1] == '&') ||
897 (p
[0] == '|' && p
[1] == '|') ||
898 (p
[0] == '^' && p
[1] == '^'))
904 if (type
!= TOK_COMMENT
)
906 *tail
= t
= new_Token(NULL
, type
, line
, p
- line
);
915 * this function allocates a new managed block of memory and
916 * returns a pointer to the block. The managed blocks are
917 * deleted only all at once by the delete_Blocks function.
920 new_Block(size_t size
)
924 /* first, get to the end of the linked list */
927 /* now allocate the requested chunk */
928 b
->chunk
= nasm_malloc(size
);
930 /* now allocate a new block for the next request */
931 b
->next
= nasm_malloc(sizeof(Blocks
));
932 /* and initialize the contents of the new block */
933 b
->next
->next
= NULL
;
934 b
->next
->chunk
= NULL
;
939 * this function deletes all managed blocks of memory
944 Blocks
*a
,*b
= &blocks
;
947 * keep in mind that the first block, pointed to by blocks
948 * is a static and not dynamically allocated, so we don't
963 * this function creates a new Token and passes a pointer to it
964 * back to the caller. It sets the type and text elements, and
965 * also the mac and next elements to NULL.
968 new_Token(Token
* next
, int type
, char *text
, int txtlen
)
973 if (freeTokens
== NULL
)
975 freeTokens
= (Token
*)new_Block(TOKEN_BLOCKSIZE
* sizeof(Token
));
976 for (i
= 0; i
< TOKEN_BLOCKSIZE
- 1; i
++)
977 freeTokens
[i
].next
= &freeTokens
[i
+ 1];
978 freeTokens
[i
].next
= NULL
;
981 freeTokens
= t
->next
;
985 if (type
== TOK_WHITESPACE
|| text
== NULL
)
992 txtlen
= strlen(text
);
993 t
->text
= nasm_malloc(1 + txtlen
);
994 strncpy(t
->text
, text
, txtlen
);
995 t
->text
[txtlen
] = '\0';
1001 delete_Token(Token
* t
)
1003 Token
*next
= t
->next
;
1005 t
->next
= freeTokens
;
1011 * Convert a line of tokens back into text.
1012 * If expand_locals is not zero, identifiers of the form "%$*xxx"
1013 * will be transformed into ..@ctxnum.xxx
1016 detoken(Token
* tlist
, int expand_locals
)
1023 for (t
= tlist
; t
; t
= t
->next
)
1025 if (t
->type
== TOK_PREPROC_ID
&& t
->text
[1] == '!')
1027 char *p
= getenv(t
->text
+ 2);
1030 t
->text
= nasm_strdup(p
);
1034 /* Expand local macros here and not during preprocessing */
1035 if (expand_locals
&&
1036 t
->type
== TOK_PREPROC_ID
&& t
->text
&&
1037 t
->text
[0] == '%' && t
->text
[1] == '$')
1039 Context
*ctx
= get_ctx(t
->text
, FALSE
);
1043 char *p
, *q
= t
->text
+ 2;
1045 q
+= strspn(q
, "$");
1046 sprintf(buffer
, "..@%lu.", ctx
->number
);
1047 p
= nasm_strcat(buffer
, q
);
1052 if (t
->type
== TOK_WHITESPACE
)
1058 len
+= strlen(t
->text
);
1061 p
= line
= nasm_malloc(len
+ 1);
1062 for (t
= tlist
; t
; t
= t
->next
)
1064 if (t
->type
== TOK_WHITESPACE
)
1081 * A scanner, suitable for use by the expression evaluator, which
1082 * operates on a line of Tokens. Expects a pointer to a pointer to
1083 * the first token in the line to be passed in as its private_data
1087 ppscan(void *private_data
, struct tokenval
*tokval
)
1089 Token
**tlineptr
= private_data
;
1095 *tlineptr
= tline
? tline
->next
: NULL
;
1097 while (tline
&& (tline
->type
== TOK_WHITESPACE
||
1098 tline
->type
== TOK_COMMENT
));
1101 return tokval
->t_type
= TOKEN_EOS
;
1103 if (tline
->text
[0] == '$' && !tline
->text
[1])
1104 return tokval
->t_type
= TOKEN_HERE
;
1105 if (tline
->text
[0] == '$' && tline
->text
[1] == '$' && !tline
->text
[2])
1106 return tokval
->t_type
= TOKEN_BASE
;
1108 if (tline
->type
== TOK_ID
)
1110 tokval
->t_charptr
= tline
->text
;
1111 if (tline
->text
[0] == '$')
1113 tokval
->t_charptr
++;
1114 return tokval
->t_type
= TOKEN_ID
;
1118 * This is the only special case we actually need to worry
1119 * about in this restricted context.
1121 if (!nasm_stricmp(tline
->text
, "seg"))
1122 return tokval
->t_type
= TOKEN_SEG
;
1124 return tokval
->t_type
= TOKEN_ID
;
1127 if (tline
->type
== TOK_NUMBER
)
1131 tokval
->t_integer
= readnum(tline
->text
, &rn_error
);
1133 return tokval
->t_type
= TOKEN_ERRNUM
;
1134 tokval
->t_charptr
= NULL
;
1135 return tokval
->t_type
= TOKEN_NUM
;
1138 if (tline
->type
== TOK_STRING
)
1148 if (l
== 0 || r
[l
- 1] != q
)
1149 return tokval
->t_type
= TOKEN_ERRNUM
;
1150 tokval
->t_integer
= readstrnum(r
, l
- 1, &rn_warn
);
1152 error(ERR_WARNING
| ERR_PASS1
, "character constant too long");
1153 tokval
->t_charptr
= NULL
;
1154 return tokval
->t_type
= TOKEN_NUM
;
1157 if (tline
->type
== TOK_OTHER
)
1159 if (!strcmp(tline
->text
, "<<"))
1160 return tokval
->t_type
= TOKEN_SHL
;
1161 if (!strcmp(tline
->text
, ">>"))
1162 return tokval
->t_type
= TOKEN_SHR
;
1163 if (!strcmp(tline
->text
, "//"))
1164 return tokval
->t_type
= TOKEN_SDIV
;
1165 if (!strcmp(tline
->text
, "%%"))
1166 return tokval
->t_type
= TOKEN_SMOD
;
1167 if (!strcmp(tline
->text
, "=="))
1168 return tokval
->t_type
= TOKEN_EQ
;
1169 if (!strcmp(tline
->text
, "<>"))
1170 return tokval
->t_type
= TOKEN_NE
;
1171 if (!strcmp(tline
->text
, "!="))
1172 return tokval
->t_type
= TOKEN_NE
;
1173 if (!strcmp(tline
->text
, "<="))
1174 return tokval
->t_type
= TOKEN_LE
;
1175 if (!strcmp(tline
->text
, ">="))
1176 return tokval
->t_type
= TOKEN_GE
;
1177 if (!strcmp(tline
->text
, "&&"))
1178 return tokval
->t_type
= TOKEN_DBL_AND
;
1179 if (!strcmp(tline
->text
, "^^"))
1180 return tokval
->t_type
= TOKEN_DBL_XOR
;
1181 if (!strcmp(tline
->text
, "||"))
1182 return tokval
->t_type
= TOKEN_DBL_OR
;
1186 * We have no other options: just return the first character of
1189 return tokval
->t_type
= tline
->text
[0];
1193 * Compare a string to the name of an existing macro; this is a
1194 * simple wrapper which calls either strcmp or nasm_stricmp
1195 * depending on the value of the `casesense' parameter.
1198 mstrcmp(char *p
, char *q
, int casesense
)
1200 return casesense
? strcmp(p
, q
) : nasm_stricmp(p
, q
);
1204 * Return the Context structure associated with a %$ token. Return
1205 * NULL, having _already_ reported an error condition, if the
1206 * context stack isn't deep enough for the supplied number of $
1208 * If all_contexts == TRUE, contexts that enclose current are
1209 * also scanned for such smacro, until it is found; if not -
1210 * only the context that directly results from the number of $'s
1211 * in variable's name.
1214 get_ctx(char *name
, int all_contexts
)
1220 if (!name
|| name
[0] != '%' || name
[1] != '$')
1225 error(ERR_NONFATAL
, "`%s': context stack is empty", name
);
1229 for (i
= strspn(name
+ 2, "$"), ctx
= cstk
; (i
> 0) && ctx
; i
--)
1232 /* i--; Lino - 02/25/02 */
1236 error(ERR_NONFATAL
, "`%s': context stack is only"
1237 " %d level%s deep", name
, i
- 1, (i
== 2 ? "" : "s"));
1245 /* Search for this smacro in found context */
1249 if (!mstrcmp(m
->name
, name
, m
->casesense
))
1260 * Open an include file. This routine must always return a valid
1261 * file pointer if it returns - it's responsible for throwing an
1262 * ERR_FATAL and bombing out completely if not. It should also try
1263 * the include path one by one until it finds the file or reaches
1264 * the end of the path.
1267 inc_fopen(char *file
)
1270 char *prefix
= "", *combine
;
1271 IncPath
*ip
= ipath
;
1272 static int namelen
= 0;
1273 int len
= strlen(file
);
1277 combine
= nasm_malloc(strlen(prefix
) + len
+ 1);
1278 strcpy(combine
, prefix
);
1279 strcat(combine
, file
);
1280 fp
= fopen(combine
, "r");
1281 if (pass
== 0 && fp
)
1283 namelen
+= strlen(combine
) + 1;
1289 printf(" %s", combine
);
1300 error(ERR_FATAL
, "unable to open include file `%s'", file
);
1301 return NULL
; /* never reached - placate compilers */
1305 * Determine if we should warn on defining a single-line macro of
1306 * name `name', with `nparam' parameters. If nparam is 0 or -1, will
1307 * return TRUE if _any_ single-line macro of that name is defined.
1308 * Otherwise, will return TRUE if a single-line macro with either
1309 * `nparam' or no parameters is defined.
1311 * If a macro with precisely the right number of parameters is
1312 * defined, or nparam is -1, the address of the definition structure
1313 * will be returned in `defn'; otherwise NULL will be returned. If `defn'
1314 * is NULL, no action will be taken regarding its contents, and no
1317 * Note that this is also called with nparam zero to resolve
1320 * If you already know which context macro belongs to, you can pass
1321 * the context pointer as first parameter; if you won't but name begins
1322 * with %$ the context will be automatically computed. If all_contexts
1323 * is true, macro will be searched in outer contexts as well.
1326 smacro_defined(Context
* ctx
, char *name
, int nparam
, SMacro
** defn
,
1333 else if (name
[0] == '%' && name
[1] == '$')
1336 ctx
= get_ctx(name
, FALSE
);
1338 return FALSE
; /* got to return _something_ */
1342 m
= smacros
[hash(name
)];
1346 if (!mstrcmp(m
->name
, name
, m
->casesense
&& nocase
) &&
1347 (nparam
<= 0 || m
->nparam
== 0 || nparam
== m
->nparam
))
1351 if (nparam
== m
->nparam
|| nparam
== -1)
1365 * Count and mark off the parameters in a multi-line macro call.
1366 * This is called both from within the multi-line macro expansion
1367 * code, and also to mark off the default parameters when provided
1368 * in a %macro definition line.
1371 count_mmac_params(Token
* t
, int *nparam
, Token
*** params
)
1373 int paramsize
, brace
;
1375 *nparam
= paramsize
= 0;
1379 if (*nparam
>= paramsize
)
1381 paramsize
+= PARAM_DELTA
;
1382 *params
= nasm_realloc(*params
, sizeof(**params
) * paramsize
);
1386 if (tok_is_(t
, "{"))
1388 (*params
)[(*nparam
)++] = t
;
1389 while (tok_isnt_(t
, brace
? "}" : ","))
1392 { /* got a comma/brace */
1397 * Now we've found the closing brace, look further
1401 if (tok_isnt_(t
, ","))
1404 "braces do not enclose all of macro parameter");
1405 while (tok_isnt_(t
, ","))
1409 t
= t
->next
; /* eat the comma */
1416 * Determine whether one of the various `if' conditions is true or
1419 * We must free the tline we get passed.
1422 if_condition(Token
* tline
, int i
)
1425 Token
*t
, *tt
, **tptr
, *origline
;
1426 struct tokenval tokval
;
1437 j
= FALSE
; /* have we matched yet? */
1438 while (cstk
&& tline
)
1441 if (!tline
|| tline
->type
!= TOK_ID
)
1444 "`%s' expects context identifiers",
1446 free_tlist(origline
);
1449 if (!nasm_stricmp(tline
->text
, cstk
->name
))
1451 tline
= tline
->next
;
1453 if (i
== PP_IFNCTX
|| i
== PP_ELIFNCTX
)
1455 free_tlist(origline
);
1462 j
= FALSE
; /* have we matched yet? */
1466 if (!tline
|| (tline
->type
!= TOK_ID
&&
1467 (tline
->type
!= TOK_PREPROC_ID
||
1468 tline
->text
[1] != '$')))
1471 "`%s' expects macro identifiers",
1473 free_tlist(origline
);
1476 if (smacro_defined(NULL
, tline
->text
, 0, NULL
, 1))
1478 tline
= tline
->next
;
1480 if (i
== PP_IFNDEF
|| i
== PP_ELIFNDEF
)
1482 free_tlist(origline
);
1493 tline
= expand_smacro(tline
);
1495 while (tok_isnt_(tt
, ","))
1500 "`%s' expects two comma-separated arguments",
1506 casesense
= (i
== PP_IFIDN
|| i
== PP_ELIFIDN
||
1507 i
== PP_IFNIDN
|| i
== PP_ELIFNIDN
);
1508 j
= TRUE
; /* assume equality unless proved not */
1509 while ((t
->type
!= TOK_OTHER
|| strcmp(t
->text
, ",")) && tt
)
1511 if (tt
->type
== TOK_OTHER
&& !strcmp(tt
->text
, ","))
1513 error(ERR_NONFATAL
, "`%s': more than one comma on line",
1518 if (t
->type
== TOK_WHITESPACE
)
1523 else if (tt
->type
== TOK_WHITESPACE
)
1528 else if (tt
->type
!= t
->type
||
1529 mstrcmp(tt
->text
, t
->text
, casesense
))
1531 j
= FALSE
; /* found mismatching tokens */
1541 if ((t
->type
!= TOK_OTHER
|| strcmp(t
->text
, ",")) || tt
)
1542 j
= FALSE
; /* trailing gunk on one end or other */
1543 if (i
== PP_IFNIDN
|| i
== PP_ELIFNIDN
||
1544 i
== PP_IFNIDNI
|| i
== PP_ELIFNIDNI
)
1555 MMacro searching
, *mmac
;
1557 tline
= tline
->next
;
1559 tline
= expand_id(tline
);
1560 if (!tok_type_(tline
, TOK_ID
))
1563 "`%s' expects a macro name",
1567 searching
.name
= nasm_strdup(tline
->text
);
1568 searching
.casesense
= (i
== PP_MACRO
);
1569 searching
.plus
= FALSE
;
1570 searching
.nolist
= FALSE
;
1571 searching
.in_progress
= FALSE
;
1572 searching
.rep_nest
= NULL
;
1573 searching
.nparam_min
= 0;
1574 searching
.nparam_max
= INT_MAX
;
1575 tline
= expand_smacro(tline
->next
);
1579 } else if (!tok_type_(tline
, TOK_NUMBER
))
1582 "`%s' expects a parameter count or nothing",
1587 searching
.nparam_min
= searching
.nparam_max
=
1588 readnum(tline
->text
, &j
);
1591 "unable to parse parameter count `%s'",
1594 if (tline
&& tok_is_(tline
->next
, "-"))
1596 tline
= tline
->next
->next
;
1597 if (tok_is_(tline
, "*"))
1598 searching
.nparam_max
= INT_MAX
;
1599 else if (!tok_type_(tline
, TOK_NUMBER
))
1601 "`%s' expects a parameter count after `-'",
1605 searching
.nparam_max
= readnum(tline
->text
, &j
);
1608 "unable to parse parameter count `%s'",
1610 if (searching
.nparam_min
> searching
.nparam_max
)
1612 "minimum parameter count exceeds maximum");
1615 if (tline
&& tok_is_(tline
->next
, "+"))
1617 tline
= tline
->next
;
1618 searching
.plus
= TRUE
;
1620 mmac
= mmacros
[hash(searching
.name
)];
1623 if (!strcmp(mmac
->name
, searching
.name
) &&
1624 (mmac
->nparam_min
<= searching
.nparam_max
1626 && (searching
.nparam_min
<= mmac
->nparam_max
1634 nasm_free(searching
.name
);
1635 free_tlist(origline
);
1636 if (i
== PP_IFNMACRO
|| i
== PP_ELIFNMACRO
)
1653 tline
= expand_smacro(tline
);
1655 while (tok_type_(t
, TOK_WHITESPACE
))
1657 j
= FALSE
; /* placate optimiser */
1665 j
= (t
->type
== TOK_ID
);
1671 j
= (t
->type
== TOK_NUMBER
);
1677 j
= (t
->type
== TOK_STRING
);
1680 if (i
== PP_IFNID
|| i
== PP_ELIFNID
||
1681 i
== PP_IFNNUM
|| i
== PP_ELIFNNUM
||
1682 i
== PP_IFNSTR
|| i
== PP_ELIFNSTR
)
1689 t
= tline
= expand_smacro(tline
);
1691 tokval
.t_type
= TOKEN_INVALID
;
1692 evalresult
= evaluate(ppscan
, tptr
, &tokval
,
1693 NULL
, pass
| CRITICAL
, error
, NULL
);
1699 "trailing garbage after expression ignored");
1700 if (!is_simple(evalresult
))
1703 "non-constant value given to `%s'", directives
[i
]);
1706 return reloc_value(evalresult
) != 0;
1710 "preprocessor directive `%s' not yet implemented",
1712 free_tlist(origline
);
1713 return -1; /* yeah, right */
1718 * Expand macros in a string. Used in %error and %include directives.
1719 * First tokenise the string, apply "expand_smacro" and then de-tokenise back.
1720 * The returned variable should ALWAYS be freed after usage.
1723 expand_macros_in_string(char **p
)
1725 Token
*line
= tokenise(*p
);
1726 line
= expand_smacro(line
);
1727 *p
= detoken(line
, FALSE
);
1731 * find and process preprocessor directive in passed line
1732 * Find out if a line contains a preprocessor directive, and deal
1735 * If a directive _is_ found, it is the responsibility of this routine
1736 * (and not the caller) to free_tlist() the line.
1738 * @param tline a pointer to the current tokeninzed line linked list
1739 * @return DIRECTIVE_FOUND or NO_DIRECTIVE_FOUND
1743 do_directive(Token
* tline
)
1745 int i
, j
, k
, m
, nparam
, nolist
;
1751 SMacro
*smac
, **smhead
;
1753 Token
*t
, *tt
, *param_start
, *macro_start
, *last
, **tptr
, *origline
;
1755 struct tokenval tokval
;
1757 MMacro
*tmp_defining
; /* Used when manipulating rep_nest */
1762 if (!tok_type_(tline
, TOK_PREPROC_ID
) ||
1763 (tline
->text
[1] == '%' || tline
->text
[1] == '$'
1764 || tline
->text
[1] == '!'))
1765 return NO_DIRECTIVE_FOUND
;
1768 j
= elements(directives
);
1772 m
= nasm_stricmp(tline
->text
, directives
[k
]);
1774 if (tasm_compatible_mode
) {
1777 } else if (k
!= PP_ARG
&& k
!= PP_LOCAL
&& k
!= PP_STACKSIZE
) {
1791 * If we're in a non-emitting branch of a condition construct,
1792 * or walking to the end of an already terminated %rep block,
1793 * we should ignore all directives except for condition
1796 if (((istk
->conds
&& !emitting(istk
->conds
->state
)) ||
1797 (istk
->mstk
&& !istk
->mstk
->in_progress
)) &&
1800 return NO_DIRECTIVE_FOUND
;
1804 * If we're defining a macro or reading a %rep block, we should
1805 * ignore all directives except for %macro/%imacro (which
1806 * generate an error), %endm/%endmacro, and (only if we're in a
1807 * %rep block) %endrep. If we're in a %rep block, another %rep
1808 * causes an error, so should be let through.
1810 if (defining
&& i
!= PP_MACRO
&& i
!= PP_IMACRO
&&
1811 i
!= PP_ENDMACRO
&& i
!= PP_ENDM
&&
1812 (defining
->name
|| (i
!= PP_ENDREP
&& i
!= PP_REP
)))
1814 return NO_DIRECTIVE_FOUND
;
1819 error(ERR_NONFATAL
, "unknown preprocessor directive `%s'",
1821 return NO_DIRECTIVE_FOUND
; /* didn't get it */
1827 /* Directive to tell NASM what the default stack size is. The
1828 * default is for a 16-bit stack, and this can be overriden with
1830 * the following form:
1832 * ARG arg1:WORD, arg2:DWORD, arg4:QWORD
1834 tline
= tline
->next
;
1835 if (tline
&& tline
->type
== TOK_WHITESPACE
)
1836 tline
= tline
->next
;
1837 if (!tline
|| tline
->type
!= TOK_ID
)
1839 error(ERR_NONFATAL
, "`%%stacksize' missing size parameter");
1840 free_tlist(origline
);
1841 return DIRECTIVE_FOUND
;
1843 if (nasm_stricmp(tline
->text
, "flat") == 0)
1845 /* All subsequent ARG directives are for a 32-bit stack */
1847 StackPointer
= "ebp";
1851 else if (nasm_stricmp(tline
->text
, "large") == 0)
1853 /* All subsequent ARG directives are for a 16-bit stack,
1854 * far function call.
1857 StackPointer
= "bp";
1861 else if (nasm_stricmp(tline
->text
, "small") == 0)
1863 /* All subsequent ARG directives are for a 16-bit stack,
1864 * far function call. We don't support near functions.
1867 StackPointer
= "bp";
1873 error(ERR_NONFATAL
, "`%%stacksize' invalid size type");
1874 free_tlist(origline
);
1875 return DIRECTIVE_FOUND
;
1877 free_tlist(origline
);
1878 return DIRECTIVE_FOUND
;
1881 /* TASM like ARG directive to define arguments to functions, in
1882 * the following form:
1884 * ARG arg1:WORD, arg2:DWORD, arg4:QWORD
1889 char *arg
, directive
[256];
1890 int size
= StackSize
;
1892 /* Find the argument name */
1893 tline
= tline
->next
;
1894 if (tline
&& tline
->type
== TOK_WHITESPACE
)
1895 tline
= tline
->next
;
1896 if (!tline
|| tline
->type
!= TOK_ID
)
1898 error(ERR_NONFATAL
, "`%%arg' missing argument parameter");
1899 free_tlist(origline
);
1900 return DIRECTIVE_FOUND
;
1904 /* Find the argument size type */
1905 tline
= tline
->next
;
1906 if (!tline
|| tline
->type
!= TOK_OTHER
1907 || tline
->text
[0] != ':')
1910 "Syntax error processing `%%arg' directive");
1911 free_tlist(origline
);
1912 return DIRECTIVE_FOUND
;
1914 tline
= tline
->next
;
1915 if (!tline
|| tline
->type
!= TOK_ID
)
1918 "`%%arg' missing size type parameter");
1919 free_tlist(origline
);
1920 return DIRECTIVE_FOUND
;
1923 /* Allow macro expansion of type parameter */
1924 tt
= tokenise(tline
->text
);
1925 tt
= expand_smacro(tt
);
1926 if (nasm_stricmp(tt
->text
, "byte") == 0)
1928 size
= MAX(StackSize
, 1);
1930 else if (nasm_stricmp(tt
->text
, "word") == 0)
1932 size
= MAX(StackSize
, 2);
1934 else if (nasm_stricmp(tt
->text
, "dword") == 0)
1936 size
= MAX(StackSize
, 4);
1938 else if (nasm_stricmp(tt
->text
, "qword") == 0)
1940 size
= MAX(StackSize
, 8);
1942 else if (nasm_stricmp(tt
->text
, "tword") == 0)
1944 size
= MAX(StackSize
, 10);
1949 "Invalid size type for `%%arg' missing directive");
1951 free_tlist(origline
);
1952 return DIRECTIVE_FOUND
;
1956 /* Now define the macro for the argument */
1957 sprintf(directive
, "%%define %s (%s+%d)", arg
, StackPointer
,
1959 do_directive(tokenise(directive
));
1962 /* Move to the next argument in the list */
1963 tline
= tline
->next
;
1964 if (tline
&& tline
->type
== TOK_WHITESPACE
)
1965 tline
= tline
->next
;
1967 while (tline
&& tline
->type
== TOK_OTHER
1968 && tline
->text
[0] == ',');
1969 free_tlist(origline
);
1970 return DIRECTIVE_FOUND
;
1973 /* TASM like LOCAL directive to define local variables for a
1974 * function, in the following form:
1976 * LOCAL local1:WORD, local2:DWORD, local4:QWORD = LocalSize
1978 * The '= LocalSize' at the end is ignored by NASM, but is
1979 * required by TASM to define the local parameter size (and used
1980 * by the TASM macro package).
1982 offset
= LocalOffset
;
1985 char *local
, directive
[256];
1986 int size
= StackSize
;
1988 /* Find the argument name */
1989 tline
= tline
->next
;
1990 if (tline
&& tline
->type
== TOK_WHITESPACE
)
1991 tline
= tline
->next
;
1992 if (!tline
|| tline
->type
!= TOK_ID
)
1995 "`%%local' missing argument parameter");
1996 free_tlist(origline
);
1997 return DIRECTIVE_FOUND
;
1999 local
= tline
->text
;
2001 /* Find the argument size type */
2002 tline
= tline
->next
;
2003 if (!tline
|| tline
->type
!= TOK_OTHER
2004 || tline
->text
[0] != ':')
2007 "Syntax error processing `%%local' directive");
2008 free_tlist(origline
);
2009 return DIRECTIVE_FOUND
;
2011 tline
= tline
->next
;
2012 if (!tline
|| tline
->type
!= TOK_ID
)
2015 "`%%local' missing size type parameter");
2016 free_tlist(origline
);
2017 return DIRECTIVE_FOUND
;
2020 /* Allow macro expansion of type parameter */
2021 tt
= tokenise(tline
->text
);
2022 tt
= expand_smacro(tt
);
2023 if (nasm_stricmp(tt
->text
, "byte") == 0)
2025 size
= MAX(StackSize
, 1);
2027 else if (nasm_stricmp(tt
->text
, "word") == 0)
2029 size
= MAX(StackSize
, 2);
2031 else if (nasm_stricmp(tt
->text
, "dword") == 0)
2033 size
= MAX(StackSize
, 4);
2035 else if (nasm_stricmp(tt
->text
, "qword") == 0)
2037 size
= MAX(StackSize
, 8);
2039 else if (nasm_stricmp(tt
->text
, "tword") == 0)
2041 size
= MAX(StackSize
, 10);
2046 "Invalid size type for `%%local' missing directive");
2048 free_tlist(origline
);
2049 return DIRECTIVE_FOUND
;
2053 /* Now define the macro for the argument */
2054 sprintf(directive
, "%%define %s (%s-%d)", local
, StackPointer
,
2056 do_directive(tokenise(directive
));
2059 /* Now define the assign to setup the enter_c macro correctly */
2060 sprintf(directive
, "%%assign %%$localsize %%$localsize+%d",
2062 do_directive(tokenise(directive
));
2064 /* Move to the next argument in the list */
2065 tline
= tline
->next
;
2066 if (tline
&& tline
->type
== TOK_WHITESPACE
)
2067 tline
= tline
->next
;
2069 while (tline
&& tline
->type
== TOK_OTHER
2070 && tline
->text
[0] == ',');
2071 free_tlist(origline
);
2072 return DIRECTIVE_FOUND
;
2077 "trailing garbage after `%%clear' ignored");
2078 for (j
= 0; j
< NHASH
; j
++)
2082 MMacro
*m
= mmacros
[j
];
2083 mmacros
[j
] = m
->next
;
2088 SMacro
*s
= smacros
[j
];
2089 smacros
[j
] = smacros
[j
]->next
;
2091 free_tlist(s
->expansion
);
2095 free_tlist(origline
);
2096 return DIRECTIVE_FOUND
;
2099 tline
= tline
->next
;
2101 if (!tline
|| (tline
->type
!= TOK_STRING
&&
2102 tline
->type
!= TOK_INTERNAL_STRING
))
2104 error(ERR_NONFATAL
, "`%%include' expects a file name");
2105 free_tlist(origline
);
2106 return DIRECTIVE_FOUND
; /* but we did _something_ */
2110 "trailing garbage after `%%include' ignored");
2111 if (tline
->type
!= TOK_INTERNAL_STRING
)
2113 p
= tline
->text
+ 1; /* point past the quote to the name */
2114 p
[strlen(p
) - 1] = '\0'; /* remove the trailing quote */
2117 p
= tline
->text
; /* internal_string is easier */
2118 expand_macros_in_string(&p
);
2119 inc
= nasm_malloc(sizeof(Include
));
2122 inc
->fp
= inc_fopen(p
);
2123 inc
->fname
= src_set_fname(p
);
2124 inc
->lineno
= src_set_linnum(0);
2126 inc
->expansion
= NULL
;
2129 list
->uplevel(LIST_INCLUDE
);
2130 free_tlist(origline
);
2131 return DIRECTIVE_FOUND
;
2134 tline
= tline
->next
;
2136 tline
= expand_id(tline
);
2137 if (!tok_type_(tline
, TOK_ID
))
2139 error(ERR_NONFATAL
, "`%%push' expects a context identifier");
2140 free_tlist(origline
);
2141 return DIRECTIVE_FOUND
; /* but we did _something_ */
2144 error(ERR_WARNING
, "trailing garbage after `%%push' ignored");
2145 ctx
= nasm_malloc(sizeof(Context
));
2147 ctx
->localmac
= NULL
;
2148 ctx
->name
= nasm_strdup(tline
->text
);
2149 ctx
->number
= unique
++;
2151 free_tlist(origline
);
2155 tline
= tline
->next
;
2157 tline
= expand_id(tline
);
2158 if (!tok_type_(tline
, TOK_ID
))
2160 error(ERR_NONFATAL
, "`%%repl' expects a context identifier");
2161 free_tlist(origline
);
2162 return DIRECTIVE_FOUND
; /* but we did _something_ */
2165 error(ERR_WARNING
, "trailing garbage after `%%repl' ignored");
2167 error(ERR_NONFATAL
, "`%%repl': context stack is empty");
2170 nasm_free(cstk
->name
);
2171 cstk
->name
= nasm_strdup(tline
->text
);
2173 free_tlist(origline
);
2178 error(ERR_WARNING
, "trailing garbage after `%%pop' ignored");
2181 "`%%pop': context stack is already empty");
2184 free_tlist(origline
);
2188 tline
->next
= expand_smacro(tline
->next
);
2189 tline
= tline
->next
;
2191 if (tok_type_(tline
, TOK_STRING
))
2193 p
= tline
->text
+ 1; /* point past the quote to the name */
2194 p
[strlen(p
) - 1] = '\0'; /* remove the trailing quote */
2195 expand_macros_in_string(&p
);
2196 error(ERR_NONFATAL
, "%s", p
);
2201 p
= detoken(tline
, FALSE
);
2202 error(ERR_WARNING
, "%s", p
);
2205 free_tlist(origline
);
2225 if (istk
->conds
&& !emitting(istk
->conds
->state
))
2229 j
= if_condition(tline
->next
, i
);
2230 tline
->next
= NULL
; /* it got freed */
2231 free_tlist(origline
);
2232 j
= j
< 0 ? COND_NEVER
: j
? COND_IF_TRUE
: COND_IF_FALSE
;
2234 cond
= nasm_malloc(sizeof(Cond
));
2235 cond
->next
= istk
->conds
;
2238 return DIRECTIVE_FOUND
;
2258 error(ERR_FATAL
, "`%s': no matching `%%if'", directives
[i
]);
2259 if (emitting(istk
->conds
->state
)
2260 || istk
->conds
->state
== COND_NEVER
)
2261 istk
->conds
->state
= COND_NEVER
;
2265 * IMPORTANT: In the case of %if, we will already have
2266 * called expand_mmac_params(); however, if we're
2267 * processing an %elif we must have been in a
2268 * non-emitting mode, which would have inhibited
2269 * the normal invocation of expand_mmac_params(). Therefore,
2270 * we have to do it explicitly here.
2272 j
= if_condition(expand_mmac_params(tline
->next
), i
);
2273 tline
->next
= NULL
; /* it got freed */
2274 free_tlist(origline
);
2275 istk
->conds
->state
=
2276 j
< 0 ? COND_NEVER
: j
? COND_IF_TRUE
: COND_IF_FALSE
;
2278 return DIRECTIVE_FOUND
;
2282 error(ERR_WARNING
, "trailing garbage after `%%else' ignored");
2284 error(ERR_FATAL
, "`%%else': no matching `%%if'");
2285 if (emitting(istk
->conds
->state
)
2286 || istk
->conds
->state
== COND_NEVER
)
2287 istk
->conds
->state
= COND_ELSE_FALSE
;
2289 istk
->conds
->state
= COND_ELSE_TRUE
;
2290 free_tlist(origline
);
2291 return DIRECTIVE_FOUND
;
2296 "trailing garbage after `%%endif' ignored");
2298 error(ERR_FATAL
, "`%%endif': no matching `%%if'");
2300 istk
->conds
= cond
->next
;
2302 free_tlist(origline
);
2303 return DIRECTIVE_FOUND
;
2309 "`%%%smacro': already defining a macro",
2310 (i
== PP_IMACRO
? "i" : ""));
2311 tline
= tline
->next
;
2313 tline
= expand_id(tline
);
2314 if (!tok_type_(tline
, TOK_ID
))
2317 "`%%%smacro' expects a macro name",
2318 (i
== PP_IMACRO
? "i" : ""));
2319 return DIRECTIVE_FOUND
;
2321 defining
= nasm_malloc(sizeof(MMacro
));
2322 defining
->name
= nasm_strdup(tline
->text
);
2323 defining
->casesense
= (i
== PP_MACRO
);
2324 defining
->plus
= FALSE
;
2325 defining
->nolist
= FALSE
;
2326 defining
->in_progress
= FALSE
;
2327 defining
->rep_nest
= NULL
;
2328 tline
= expand_smacro(tline
->next
);
2330 if (!tok_type_(tline
, TOK_NUMBER
))
2333 "`%%%smacro' expects a parameter count",
2334 (i
== PP_IMACRO
? "i" : ""));
2335 defining
->nparam_min
= defining
->nparam_max
= 0;
2339 defining
->nparam_min
= defining
->nparam_max
=
2340 readnum(tline
->text
, &j
);
2343 "unable to parse parameter count `%s'",
2346 if (tline
&& tok_is_(tline
->next
, "-"))
2348 tline
= tline
->next
->next
;
2349 if (tok_is_(tline
, "*"))
2350 defining
->nparam_max
= INT_MAX
;
2351 else if (!tok_type_(tline
, TOK_NUMBER
))
2353 "`%%%smacro' expects a parameter count after `-'",
2354 (i
== PP_IMACRO
? "i" : ""));
2357 defining
->nparam_max
= readnum(tline
->text
, &j
);
2360 "unable to parse parameter count `%s'",
2362 if (defining
->nparam_min
> defining
->nparam_max
)
2364 "minimum parameter count exceeds maximum");
2367 if (tline
&& tok_is_(tline
->next
, "+"))
2369 tline
= tline
->next
;
2370 defining
->plus
= TRUE
;
2372 if (tline
&& tok_type_(tline
->next
, TOK_ID
) &&
2373 !nasm_stricmp(tline
->next
->text
, ".nolist"))
2375 tline
= tline
->next
;
2376 defining
->nolist
= TRUE
;
2378 mmac
= mmacros
[hash(defining
->name
)];
2381 if (!strcmp(mmac
->name
, defining
->name
) &&
2382 (mmac
->nparam_min
<= defining
->nparam_max
2384 && (defining
->nparam_min
<= mmac
->nparam_max
2388 "redefining multi-line macro `%s'",
2395 * Handle default parameters.
2397 if (tline
&& tline
->next
)
2399 defining
->dlist
= tline
->next
;
2401 count_mmac_params(defining
->dlist
, &defining
->ndefs
,
2402 &defining
->defaults
);
2406 defining
->dlist
= NULL
;
2407 defining
->defaults
= NULL
;
2409 defining
->expansion
= NULL
;
2410 free_tlist(origline
);
2411 return DIRECTIVE_FOUND
;
2417 error(ERR_NONFATAL
, "`%s': not defining a macro",
2419 return DIRECTIVE_FOUND
;
2421 k
= hash(defining
->name
);
2422 defining
->next
= mmacros
[k
];
2423 mmacros
[k
] = defining
;
2425 free_tlist(origline
);
2426 return DIRECTIVE_FOUND
;
2429 if (tline
->next
&& tline
->next
->type
== TOK_WHITESPACE
)
2430 tline
= tline
->next
;
2431 if (tline
->next
== NULL
)
2433 free_tlist(origline
);
2434 error(ERR_NONFATAL
, "`%%rotate' missing rotate count");
2435 return DIRECTIVE_FOUND
;
2437 t
= expand_smacro(tline
->next
);
2439 free_tlist(origline
);
2442 tokval
.t_type
= TOKEN_INVALID
;
2444 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
2447 return DIRECTIVE_FOUND
;
2450 "trailing garbage after expression ignored");
2451 if (!is_simple(evalresult
))
2453 error(ERR_NONFATAL
, "non-constant value given to `%%rotate'");
2454 return DIRECTIVE_FOUND
;
2457 while (mmac
&& !mmac
->name
) /* avoid mistaking %reps for macros */
2458 mmac
= mmac
->next_active
;
2462 "`%%rotate' invoked outside a macro call");
2464 else if (mmac
->nparam
== 0)
2467 "`%%rotate' invoked within macro without parameters");
2471 mmac
->rotate
= mmac
->rotate
+ reloc_value(evalresult
);
2473 if (mmac
->rotate
< 0)
2475 mmac
->nparam
- (-mmac
->rotate
) % mmac
->nparam
;
2476 mmac
->rotate
%= mmac
->nparam
;
2478 return DIRECTIVE_FOUND
;
2482 tline
= tline
->next
;
2483 if (tline
->next
&& tline
->next
->type
== TOK_WHITESPACE
)
2484 tline
= tline
->next
;
2485 if (tline
->next
&& tline
->next
->type
== TOK_ID
&&
2486 !nasm_stricmp(tline
->next
->text
, ".nolist"))
2488 tline
= tline
->next
;
2491 t
= expand_smacro(tline
->next
);
2493 free_tlist(origline
);
2496 tokval
.t_type
= TOKEN_INVALID
;
2498 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
2501 return DIRECTIVE_FOUND
;
2504 "trailing garbage after expression ignored");
2505 if (!is_simple(evalresult
))
2507 error(ERR_NONFATAL
, "non-constant value given to `%%rep'");
2508 return DIRECTIVE_FOUND
;
2510 tmp_defining
= defining
;
2511 defining
= nasm_malloc(sizeof(MMacro
));
2512 defining
->name
= NULL
; /* flags this macro as a %rep block */
2513 defining
->casesense
= 0;
2514 defining
->plus
= FALSE
;
2515 defining
->nolist
= nolist
;
2516 defining
->in_progress
= reloc_value(evalresult
) + 1;
2517 defining
->nparam_min
= defining
->nparam_max
= 0;
2518 defining
->defaults
= NULL
;
2519 defining
->dlist
= NULL
;
2520 defining
->expansion
= NULL
;
2521 defining
->next_active
= istk
->mstk
;
2522 defining
->rep_nest
= tmp_defining
;
2523 return DIRECTIVE_FOUND
;
2526 if (!defining
|| defining
->name
)
2528 error(ERR_NONFATAL
, "`%%endrep': no matching `%%rep'");
2529 return DIRECTIVE_FOUND
;
2533 * Now we have a "macro" defined - although it has no name
2534 * and we won't be entering it in the hash tables - we must
2535 * push a macro-end marker for it on to istk->expansion.
2536 * After that, it will take care of propagating itself (a
2537 * macro-end marker line for a macro which is really a %rep
2538 * block will cause the macro to be re-expanded, complete
2539 * with another macro-end marker to ensure the process
2540 * continues) until the whole expansion is forcibly removed
2541 * from istk->expansion by a %exitrep.
2543 l
= nasm_malloc(sizeof(Line
));
2544 l
->next
= istk
->expansion
;
2545 l
->finishes
= defining
;
2547 istk
->expansion
= l
;
2549 istk
->mstk
= defining
;
2551 list
->uplevel(defining
->nolist
? LIST_MACRO_NOLIST
: LIST_MACRO
);
2552 tmp_defining
= defining
;
2553 defining
= defining
->rep_nest
;
2554 free_tlist(origline
);
2555 return DIRECTIVE_FOUND
;
2559 * We must search along istk->expansion until we hit a
2560 * macro-end marker for a macro with no name. Then we set
2561 * its `in_progress' flag to 0.
2563 for (l
= istk
->expansion
; l
; l
= l
->next
)
2564 if (l
->finishes
&& !l
->finishes
->name
)
2568 l
->finishes
->in_progress
= 0;
2570 error(ERR_NONFATAL
, "`%%exitrep' not within `%%rep' block");
2571 free_tlist(origline
);
2572 return DIRECTIVE_FOUND
;
2578 tline
= tline
->next
;
2580 tline
= expand_id(tline
);
2581 if (!tline
|| (tline
->type
!= TOK_ID
&&
2582 (tline
->type
!= TOK_PREPROC_ID
||
2583 tline
->text
[1] != '$')))
2586 "`%%%s%sdefine' expects a macro identifier",
2587 ((i
== PP_IDEFINE
|| i
== PP_IXDEFINE
) ? "i" : ""),
2588 ((i
== PP_XDEFINE
|| i
== PP_IXDEFINE
) ? "x" : ""));
2589 free_tlist(origline
);
2590 return DIRECTIVE_FOUND
;
2593 ctx
= get_ctx(tline
->text
, FALSE
);
2595 smhead
= &smacros
[hash(tline
->text
)];
2597 smhead
= &ctx
->localmac
;
2598 mname
= tline
->text
;
2600 param_start
= tline
= tline
->next
;
2603 /* Expand the macro definition now for %xdefine and %ixdefine */
2604 if ((i
== PP_XDEFINE
) || (i
== PP_IXDEFINE
))
2605 tline
= expand_smacro(tline
);
2607 if (tok_is_(tline
, "("))
2610 * This macro has parameters.
2613 tline
= tline
->next
;
2619 error(ERR_NONFATAL
, "parameter identifier expected");
2620 free_tlist(origline
);
2621 return DIRECTIVE_FOUND
;
2623 if (tline
->type
!= TOK_ID
)
2626 "`%s': parameter identifier expected",
2628 free_tlist(origline
);
2629 return DIRECTIVE_FOUND
;
2631 tline
->type
= TOK_SMAC_PARAM
+ nparam
++;
2632 tline
= tline
->next
;
2634 if (tok_is_(tline
, ","))
2636 tline
= tline
->next
;
2639 if (!tok_is_(tline
, ")"))
2642 "`)' expected to terminate macro template");
2643 free_tlist(origline
);
2644 return DIRECTIVE_FOUND
;
2649 tline
= tline
->next
;
2651 if (tok_type_(tline
, TOK_WHITESPACE
))
2652 last
= tline
, tline
= tline
->next
;
2658 if (t
->type
== TOK_ID
)
2660 for (tt
= param_start
; tt
; tt
= tt
->next
)
2661 if (tt
->type
>= TOK_SMAC_PARAM
&&
2662 !strcmp(tt
->text
, t
->text
))
2666 t
->next
= macro_start
;
2671 * Good. We now have a macro name, a parameter count, and a
2672 * token list (in reverse order) for an expansion. We ought
2673 * to be OK just to create an SMacro, store it, and let
2674 * free_tlist have the rest of the line (which we have
2675 * carefully re-terminated after chopping off the expansion
2678 if (smacro_defined(ctx
, mname
, nparam
, &smac
, i
== PP_DEFINE
))
2683 "single-line macro `%s' defined both with and"
2684 " without parameters", mname
);
2685 free_tlist(origline
);
2686 free_tlist(macro_start
);
2687 return DIRECTIVE_FOUND
;
2692 * We're redefining, so we have to take over an
2693 * existing SMacro structure. This means freeing
2694 * what was already in it.
2696 nasm_free(smac
->name
);
2697 free_tlist(smac
->expansion
);
2702 smac
= nasm_malloc(sizeof(SMacro
));
2703 smac
->next
= *smhead
;
2706 smac
->name
= nasm_strdup(mname
);
2707 smac
->casesense
= ((i
== PP_DEFINE
) || (i
== PP_XDEFINE
));
2708 smac
->nparam
= nparam
;
2709 smac
->expansion
= macro_start
;
2710 smac
->in_progress
= FALSE
;
2711 free_tlist(origline
);
2712 return DIRECTIVE_FOUND
;
2715 tline
= tline
->next
;
2717 tline
= expand_id(tline
);
2718 if (!tline
|| (tline
->type
!= TOK_ID
&&
2719 (tline
->type
!= TOK_PREPROC_ID
||
2720 tline
->text
[1] != '$')))
2722 error(ERR_NONFATAL
, "`%%undef' expects a macro identifier");
2723 free_tlist(origline
);
2724 return DIRECTIVE_FOUND
;
2729 "trailing garbage after macro name ignored");
2732 /* Find the context that symbol belongs to */
2733 ctx
= get_ctx(tline
->text
, FALSE
);
2735 smhead
= &smacros
[hash(tline
->text
)];
2737 smhead
= &ctx
->localmac
;
2739 mname
= tline
->text
;
2744 * We now have a macro name... go hunt for it.
2746 while (smacro_defined(ctx
, mname
, -1, &smac
, 1))
2748 /* Defined, so we need to find its predecessor and nuke it */
2750 for (s
= smhead
; *s
&& *s
!= smac
; s
= &(*s
)->next
);
2754 nasm_free(smac
->name
);
2755 free_tlist(smac
->expansion
);
2759 free_tlist(origline
);
2760 return DIRECTIVE_FOUND
;
2763 tline
= tline
->next
;
2765 tline
= expand_id(tline
);
2766 if (!tline
|| (tline
->type
!= TOK_ID
&&
2767 (tline
->type
!= TOK_PREPROC_ID
||
2768 tline
->text
[1] != '$')))
2771 "`%%strlen' expects a macro identifier as first parameter");
2772 free_tlist(origline
);
2773 return DIRECTIVE_FOUND
;
2775 ctx
= get_ctx(tline
->text
, FALSE
);
2777 smhead
= &smacros
[hash(tline
->text
)];
2779 smhead
= &ctx
->localmac
;
2780 mname
= tline
->text
;
2782 tline
= expand_smacro(tline
->next
);
2786 while (tok_type_(t
, TOK_WHITESPACE
))
2788 /* t should now point to the string */
2789 if (t
->type
!= TOK_STRING
)
2792 "`%%strlen` requires string as second parameter");
2794 free_tlist(origline
);
2795 return DIRECTIVE_FOUND
;
2798 macro_start
= nasm_malloc(sizeof(*macro_start
));
2799 macro_start
->next
= NULL
;
2800 make_tok_num(macro_start
, strlen(t
->text
) - 2);
2801 macro_start
->mac
= NULL
;
2804 * We now have a macro name, an implicit parameter count of
2805 * zero, and a numeric token to use as an expansion. Create
2806 * and store an SMacro.
2808 if (smacro_defined(ctx
, mname
, 0, &smac
, i
== PP_STRLEN
))
2812 "single-line macro `%s' defined both with and"
2813 " without parameters", mname
);
2817 * We're redefining, so we have to take over an
2818 * existing SMacro structure. This means freeing
2819 * what was already in it.
2821 nasm_free(smac
->name
);
2822 free_tlist(smac
->expansion
);
2827 smac
= nasm_malloc(sizeof(SMacro
));
2828 smac
->next
= *smhead
;
2831 smac
->name
= nasm_strdup(mname
);
2832 smac
->casesense
= (i
== PP_STRLEN
);
2834 smac
->expansion
= macro_start
;
2835 smac
->in_progress
= FALSE
;
2837 free_tlist(origline
);
2838 return DIRECTIVE_FOUND
;
2841 tline
= tline
->next
;
2843 tline
= expand_id(tline
);
2844 if (!tline
|| (tline
->type
!= TOK_ID
&&
2845 (tline
->type
!= TOK_PREPROC_ID
||
2846 tline
->text
[1] != '$')))
2849 "`%%substr' expects a macro identifier as first parameter");
2850 free_tlist(origline
);
2851 return DIRECTIVE_FOUND
;
2853 ctx
= get_ctx(tline
->text
, FALSE
);
2855 smhead
= &smacros
[hash(tline
->text
)];
2857 smhead
= &ctx
->localmac
;
2858 mname
= tline
->text
;
2860 tline
= expand_smacro(tline
->next
);
2864 while (tok_type_(t
, TOK_WHITESPACE
))
2867 /* t should now point to the string */
2868 if (t
->type
!= TOK_STRING
)
2871 "`%%substr` requires string as second parameter");
2873 free_tlist(origline
);
2874 return DIRECTIVE_FOUND
;
2879 tokval
.t_type
= TOKEN_INVALID
;
2881 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
2885 free_tlist(origline
);
2886 return DIRECTIVE_FOUND
;
2888 if (!is_simple(evalresult
))
2890 error(ERR_NONFATAL
, "non-constant value given to `%%substr`");
2892 free_tlist(origline
);
2893 return DIRECTIVE_FOUND
;
2896 macro_start
= nasm_malloc(sizeof(*macro_start
));
2897 macro_start
->next
= NULL
;
2898 macro_start
->text
= nasm_strdup("'''");
2899 if (evalresult
->value
> 0
2900 && evalresult
->value
< strlen(t
->text
) - 1)
2902 macro_start
->text
[1] = t
->text
[evalresult
->value
];
2906 macro_start
->text
[2] = '\0';
2908 macro_start
->type
= TOK_STRING
;
2909 macro_start
->mac
= NULL
;
2912 * We now have a macro name, an implicit parameter count of
2913 * zero, and a numeric token to use as an expansion. Create
2914 * and store an SMacro.
2916 if (smacro_defined(ctx
, mname
, 0, &smac
, i
== PP_SUBSTR
))
2920 "single-line macro `%s' defined both with and"
2921 " without parameters", mname
);
2925 * We're redefining, so we have to take over an
2926 * existing SMacro structure. This means freeing
2927 * what was already in it.
2929 nasm_free(smac
->name
);
2930 free_tlist(smac
->expansion
);
2935 smac
= nasm_malloc(sizeof(SMacro
));
2936 smac
->next
= *smhead
;
2939 smac
->name
= nasm_strdup(mname
);
2940 smac
->casesense
= (i
== PP_SUBSTR
);
2942 smac
->expansion
= macro_start
;
2943 smac
->in_progress
= FALSE
;
2945 free_tlist(origline
);
2946 return DIRECTIVE_FOUND
;
2951 tline
= tline
->next
;
2953 tline
= expand_id(tline
);
2954 if (!tline
|| (tline
->type
!= TOK_ID
&&
2955 (tline
->type
!= TOK_PREPROC_ID
||
2956 tline
->text
[1] != '$')))
2959 "`%%%sassign' expects a macro identifier",
2960 (i
== PP_IASSIGN
? "i" : ""));
2961 free_tlist(origline
);
2962 return DIRECTIVE_FOUND
;
2964 ctx
= get_ctx(tline
->text
, FALSE
);
2966 smhead
= &smacros
[hash(tline
->text
)];
2968 smhead
= &ctx
->localmac
;
2969 mname
= tline
->text
;
2971 tline
= expand_smacro(tline
->next
);
2976 tokval
.t_type
= TOKEN_INVALID
;
2978 evaluate(ppscan
, tptr
, &tokval
, NULL
, pass
, error
, NULL
);
2982 free_tlist(origline
);
2983 return DIRECTIVE_FOUND
;
2988 "trailing garbage after expression ignored");
2990 if (!is_simple(evalresult
))
2993 "non-constant value given to `%%%sassign'",
2994 (i
== PP_IASSIGN
? "i" : ""));
2995 free_tlist(origline
);
2996 return DIRECTIVE_FOUND
;
2999 macro_start
= nasm_malloc(sizeof(*macro_start
));
3000 macro_start
->next
= NULL
;
3001 make_tok_num(macro_start
, reloc_value(evalresult
));
3002 macro_start
->mac
= NULL
;
3005 * We now have a macro name, an implicit parameter count of
3006 * zero, and a numeric token to use as an expansion. Create
3007 * and store an SMacro.
3009 if (smacro_defined(ctx
, mname
, 0, &smac
, i
== PP_ASSIGN
))
3013 "single-line macro `%s' defined both with and"
3014 " without parameters", mname
);
3018 * We're redefining, so we have to take over an
3019 * existing SMacro structure. This means freeing
3020 * what was already in it.
3022 nasm_free(smac
->name
);
3023 free_tlist(smac
->expansion
);
3028 smac
= nasm_malloc(sizeof(SMacro
));
3029 smac
->next
= *smhead
;
3032 smac
->name
= nasm_strdup(mname
);
3033 smac
->casesense
= (i
== PP_ASSIGN
);
3035 smac
->expansion
= macro_start
;
3036 smac
->in_progress
= FALSE
;
3037 free_tlist(origline
);
3038 return DIRECTIVE_FOUND
;
3042 * Syntax is `%line nnn[+mmm] [filename]'
3044 tline
= tline
->next
;
3046 if (!tok_type_(tline
, TOK_NUMBER
))
3048 error(ERR_NONFATAL
, "`%%line' expects line number");
3049 free_tlist(origline
);
3050 return DIRECTIVE_FOUND
;
3052 k
= readnum(tline
->text
, &j
);
3054 tline
= tline
->next
;
3055 if (tok_is_(tline
, "+"))
3057 tline
= tline
->next
;
3058 if (!tok_type_(tline
, TOK_NUMBER
))
3060 error(ERR_NONFATAL
, "`%%line' expects line increment");
3061 free_tlist(origline
);
3062 return DIRECTIVE_FOUND
;
3064 m
= readnum(tline
->text
, &j
);
3065 tline
= tline
->next
;
3072 nasm_free(src_set_fname(detoken(tline
, FALSE
)));
3074 free_tlist(origline
);
3075 return DIRECTIVE_FOUND
;
3079 "preprocessor directive `%s' not yet implemented",
3083 return DIRECTIVE_FOUND
;
3087 * Ensure that a macro parameter contains a condition code and
3088 * nothing else. Return the condition code index if so, or -1
3098 if (t
->type
!= TOK_ID
)
3102 if (tt
&& (tt
->type
!= TOK_OTHER
|| strcmp(tt
->text
, ",")))
3106 j
= elements(conditions
);
3110 m
= nasm_stricmp(t
->text
, conditions
[k
]);
3130 * Expand MMacro-local things: parameter references (%0, %n, %+n,
3131 * %-n) and MMacro-local identifiers (%%foo).
3134 expand_mmac_params(Token
* tline
)
3136 Token
*t
, *tt
, **tail
, *thead
;
3143 if (tline
->type
== TOK_PREPROC_ID
&&
3144 (((tline
->text
[1] == '+' || tline
->text
[1] == '-')
3145 && tline
->text
[2]) || tline
->text
[1] == '%'
3146 || (tline
->text
[1] >= '0' && tline
->text
[1] <= '9')))
3149 int type
= 0, cc
; /* type = 0 to placate optimisers */
3155 tline
= tline
->next
;
3158 while (mac
&& !mac
->name
) /* avoid mistaking %reps for macros */
3159 mac
= mac
->next_active
;
3161 error(ERR_NONFATAL
, "`%s': not in a macro call", t
->text
);
3166 * We have to make a substitution of one of the
3167 * forms %1, %-1, %+1, %%foo, %0.
3171 sprintf(tmpbuf
, "%d", mac
->nparam
);
3172 text
= nasm_strdup(tmpbuf
);
3176 sprintf(tmpbuf
, "..@%lu.", mac
->unique
);
3177 text
= nasm_strcat(tmpbuf
, t
->text
+ 2);
3180 n
= atoi(t
->text
+ 2) - 1;
3181 if (n
>= mac
->nparam
)
3185 if (mac
->nparam
> 1)
3186 n
= (n
+ mac
->rotate
) % mac
->nparam
;
3187 tt
= mac
->params
[n
];
3193 "macro parameter %d is not a condition code",
3200 if (inverse_ccs
[cc
] == -1)
3203 "condition code `%s' is not invertible",
3209 nasm_strdup(conditions
[inverse_ccs
3214 n
= atoi(t
->text
+ 2) - 1;
3215 if (n
>= mac
->nparam
)
3219 if (mac
->nparam
> 1)
3220 n
= (n
+ mac
->rotate
) % mac
->nparam
;
3221 tt
= mac
->params
[n
];
3227 "macro parameter %d is not a condition code",
3234 text
= nasm_strdup(conditions
[cc
]);
3238 n
= atoi(t
->text
+ 1) - 1;
3239 if (n
>= mac
->nparam
)
3243 if (mac
->nparam
> 1)
3244 n
= (n
+ mac
->rotate
) % mac
->nparam
;
3245 tt
= mac
->params
[n
];
3249 for (i
= 0; i
< mac
->paramlen
[n
]; i
++)
3252 new_Token(NULL
, tt
->type
, tt
->text
,
3254 tail
= &(*tail
)->next
;
3258 text
= NULL
; /* we've done it here */
3279 tline
= tline
->next
;
3286 for (; t
&& (tt
= t
->next
) != NULL
; t
= t
->next
)
3289 case TOK_WHITESPACE
:
3290 if (tt
->type
== TOK_WHITESPACE
)
3292 t
->next
= delete_Token(tt
);
3296 if (tt
->type
== TOK_ID
|| tt
->type
== TOK_NUMBER
)
3298 char *tmp
= nasm_strcat(t
->text
, tt
->text
);
3301 t
->next
= delete_Token(tt
);
3305 if (tt
->type
== TOK_NUMBER
)
3307 char *tmp
= nasm_strcat(t
->text
, tt
->text
);
3310 t
->next
= delete_Token(tt
);
3319 * Expand all single-line macro calls made in the given line.
3320 * Return the expanded version of the line. The original is deemed
3321 * to be destroyed in the process. (In reality we'll just move
3322 * Tokens from input to output a lot of the time, rather than
3323 * actually bothering to destroy and replicate.)
3326 expand_smacro(Token
* tline
)
3328 Token
*t
, *tt
, *mstart
, **tail
, *thead
;
3329 SMacro
*head
= NULL
, *m
;
3332 int nparam
, sparam
, brackets
, rescan
;
3333 Token
*org_tline
= tline
;
3338 * Trick: we should avoid changing the start token pointer since it can
3339 * be contained in "next" field of other token. Because of this
3340 * we allocate a copy of first token and work with it; at the end of
3341 * routine we copy it back
3346 new_Token(org_tline
->next
, org_tline
->type
, org_tline
->text
,
3348 tline
->mac
= org_tline
->mac
;
3349 nasm_free(org_tline
->text
);
3350 org_tline
->text
= NULL
;
3358 { /* main token loop */
3359 if ((mname
= tline
->text
))
3361 /* if this token is a local macro, look in local context */
3362 if (tline
->type
== TOK_ID
|| tline
->type
== TOK_PREPROC_ID
)
3363 ctx
= get_ctx(mname
, TRUE
);
3367 head
= smacros
[hash(mname
)];
3369 head
= ctx
->localmac
;
3371 * We've hit an identifier. As in is_mmacro below, we first
3372 * check whether the identifier is a single-line macro at
3373 * all, then think about checking for parameters if
3376 for (m
= head
; m
; m
= m
->next
)
3377 if (!mstrcmp(m
->name
, mname
, m
->casesense
))
3387 * Simple case: the macro is parameterless. Discard the
3388 * one token that the macro call took, and push the
3389 * expansion back on the to-do stack.
3393 if (!strcmp("__FILE__", m
->name
))
3396 src_get(&num
, &(tline
->text
));
3397 nasm_quote(&(tline
->text
));
3398 tline
->type
= TOK_STRING
;
3401 if (!strcmp("__LINE__", m
->name
))
3403 nasm_free(tline
->text
);
3404 make_tok_num(tline
, src_get_linnum());
3407 tline
= delete_Token(tline
);
3414 * Complicated case: at least one macro with this name
3415 * exists and takes parameters. We must find the
3416 * parameters in the call, count them, find the SMacro
3417 * that corresponds to that form of the macro call, and
3418 * substitute for the parameters when we expand. What a
3421 tline
= tline
->next
;
3423 if (!tok_is_(tline
, "("))
3426 * This macro wasn't called with parameters: ignore
3427 * the call. (Behaviour borrowed from gnu cpp.)
3438 tline
= tline
->next
;
3439 sparam
= PARAM_DELTA
;
3440 params
= nasm_malloc(sparam
* sizeof(Token
*));
3442 paramsize
= nasm_malloc(sparam
* sizeof(int));
3444 for (;; tline
= tline
->next
)
3445 { /* parameter loop */
3449 "macro call expects terminating `)'");
3452 if (tline
->type
== TOK_WHITESPACE
3455 if (paramsize
[nparam
])
3458 params
[nparam
] = tline
->next
;
3459 continue; /* parameter loop */
3461 if (tline
->type
== TOK_OTHER
3462 && tline
->text
[1] == 0)
3464 char ch
= tline
->text
[0];
3465 if (ch
== ',' && !paren
&& brackets
<= 0)
3467 if (++nparam
>= sparam
)
3469 sparam
+= PARAM_DELTA
;
3470 params
= nasm_realloc(params
,
3471 sparam
* sizeof(Token
*));
3472 paramsize
= nasm_realloc(paramsize
,
3473 sparam
* sizeof(int));
3475 params
[nparam
] = tline
->next
;
3476 paramsize
[nparam
] = 0;
3478 continue; /* parameter loop */
3481 (brackets
> 0 || (brackets
== 0 &&
3482 !paramsize
[nparam
])))
3486 params
[nparam
] = tline
->next
;
3487 continue; /* parameter loop */
3490 if (ch
== '}' && brackets
> 0)
3491 if (--brackets
== 0)
3494 continue; /* parameter loop */
3496 if (ch
== '(' && !brackets
)
3498 if (ch
== ')' && brackets
<= 0)
3505 error(ERR_NONFATAL
, "braces do not "
3506 "enclose all of macro parameter");
3508 paramsize
[nparam
] += white
+ 1;
3510 } /* parameter loop */
3512 while (m
&& (m
->nparam
!= nparam
||
3513 mstrcmp(m
->name
, mname
,
3517 error(ERR_WARNING
| ERR_WARN_MNP
,
3518 "macro `%s' exists, "
3519 "but not taking %d parameters",
3520 mstart
->text
, nparam
);
3523 if (m
&& m
->in_progress
)
3525 if (!m
) /* in progess or didn't find '(' or wrong nparam */
3528 * Design question: should we handle !tline, which
3529 * indicates missing ')' here, or expand those
3530 * macros anyway, which requires the (t) test a few
3534 nasm_free(paramsize
);
3540 * Expand the macro: we are placed on the last token of the
3541 * call, so that we can easily split the call from the
3542 * following tokens. We also start by pushing an SMAC_END
3543 * token for the cycle removal.
3551 tt
= new_Token(tline
, TOK_SMAC_END
, NULL
, 0);
3553 m
->in_progress
= TRUE
;
3555 for (t
= m
->expansion
; t
; t
= t
->next
)
3557 if (t
->type
>= TOK_SMAC_PARAM
)
3559 Token
*pcopy
= tline
, **ptail
= &pcopy
;
3563 ttt
= params
[t
->type
- TOK_SMAC_PARAM
];
3564 for (i
= paramsize
[t
->type
- TOK_SMAC_PARAM
];
3568 new_Token(tline
, ttt
->type
, ttt
->text
,
3577 tt
= new_Token(tline
, t
->type
, t
->text
, 0);
3583 * Having done that, get rid of the macro call, and clean
3584 * up the parameters.
3587 nasm_free(paramsize
);
3589 continue; /* main token loop */
3594 if (tline
->type
== TOK_SMAC_END
)
3596 tline
->mac
->in_progress
= FALSE
;
3597 tline
= delete_Token(tline
);
3602 tline
= tline
->next
;
3610 * Now scan the entire line and look for successive TOK_IDs that resulted
3611 * after expansion (they can't be produced by tokenise()). The successive
3612 * TOK_IDs should be concatenated.
3613 * Also we look for %+ tokens and concatenate the tokens before and after
3614 * them (without white spaces in between).
3620 while (t
&& t
->type
!= TOK_ID
&& t
->type
!= TOK_PREPROC_ID
)
3624 if (t
->next
->type
== TOK_ID
||
3625 t
->next
->type
== TOK_PREPROC_ID
||
3626 t
->next
->type
== TOK_NUMBER
)
3628 char *p
= nasm_strcat(t
->text
, t
->next
->text
);
3630 t
->next
= delete_Token(t
->next
);
3634 else if (t
->next
->type
== TOK_WHITESPACE
&& t
->next
->next
&&
3635 t
->next
->next
->type
== TOK_PREPROC_ID
&&
3636 strcmp(t
->next
->next
->text
, "%+") == 0)
3638 /* free the next whitespace, the %+ token and next whitespace */
3640 for (i
= 1; i
<= 3; i
++)
3642 if (!t
->next
|| (i
!= 2 && t
->next
->type
!= TOK_WHITESPACE
))
3644 t
->next
= delete_Token(t
->next
);
3650 /* If we concatenaded something, re-scan the line for macros */
3661 *org_tline
= *thead
;
3662 /* since we just gave text to org_line, don't free it */
3664 delete_Token(thead
);
3668 /* the expression expanded to empty line;
3669 we can't return NULL for some reasons
3670 we just set the line to a single WHITESPACE token. */
3671 memset(org_tline
, 0, sizeof(*org_tline
));
3672 org_tline
->text
= NULL
;
3673 org_tline
->type
= TOK_WHITESPACE
;
3682 * Similar to expand_smacro but used exclusively with macro identifiers
3683 * right before they are fetched in. The reason is that there can be
3684 * identifiers consisting of several subparts. We consider that if there
3685 * are more than one element forming the name, user wants a expansion,
3686 * otherwise it will be left as-is. Example:
3690 * the identifier %$abc will be left as-is so that the handler for %define
3691 * will suck it and define the corresponding value. Other case:
3693 * %define _%$abc cde
3695 * In this case user wants name to be expanded *before* %define starts
3696 * working, so we'll expand %$abc into something (if it has a value;
3697 * otherwise it will be left as-is) then concatenate all successive
3701 expand_id(Token
* tline
)
3703 Token
*cur
, *oldnext
= NULL
;
3705 if (!tline
|| !tline
->next
)
3710 (cur
->next
->type
== TOK_ID
||
3711 cur
->next
->type
== TOK_PREPROC_ID
|| cur
->next
->type
== TOK_NUMBER
))
3714 /* If identifier consists of just one token, don't expand */
3720 oldnext
= cur
->next
; /* Detach the tail past identifier */
3721 cur
->next
= NULL
; /* so that expand_smacro stops here */
3724 tline
= expand_smacro(tline
);
3728 /* expand_smacro possibly changhed tline; re-scan for EOL */
3730 while (cur
&& cur
->next
)
3733 cur
->next
= oldnext
;
3740 * Determine whether the given line constitutes a multi-line macro
3741 * call, and return the MMacro structure called if so. Doesn't have
3742 * to check for an initial label - that's taken care of in
3743 * expand_mmacro - but must check numbers of parameters. Guaranteed
3744 * to be called with tline->type == TOK_ID, so the putative macro
3745 * name is easy to find.
3748 is_mmacro(Token
* tline
, Token
*** params_array
)
3754 head
= mmacros
[hash(tline
->text
)];
3757 * Efficiency: first we see if any macro exists with the given
3758 * name. If not, we can return NULL immediately. _Then_ we
3759 * count the parameters, and then we look further along the
3760 * list if necessary to find the proper MMacro.
3762 for (m
= head
; m
; m
= m
->next
)
3763 if (!mstrcmp(m
->name
, tline
->text
, m
->casesense
))
3769 * OK, we have a potential macro. Count and demarcate the
3772 count_mmac_params(tline
->next
, &nparam
, ¶ms
);
3775 * So we know how many parameters we've got. Find the MMacro
3776 * structure that handles this number.
3780 if (m
->nparam_min
<= nparam
&& (m
->plus
|| nparam
<= m
->nparam_max
))
3783 * This one is right. Just check if cycle removal
3784 * prohibits us using it before we actually celebrate...
3790 "self-reference in multi-line macro `%s'", m
->name
);
3796 * It's right, and we can use it. Add its default
3797 * parameters to the end of our list if necessary.
3799 if (m
->defaults
&& nparam
< m
->nparam_min
+ m
->ndefs
)
3802 nasm_realloc(params
,
3803 ((m
->nparam_min
+ m
->ndefs
+ 1) * sizeof(*params
)));
3804 while (nparam
< m
->nparam_min
+ m
->ndefs
)
3806 params
[nparam
] = m
->defaults
[nparam
- m
->nparam_min
];
3811 * If we've gone over the maximum parameter count (and
3812 * we're in Plus mode), ignore parameters beyond
3815 if (m
->plus
&& nparam
> m
->nparam_max
)
3816 nparam
= m
->nparam_max
;
3818 * Then terminate the parameter list, and leave.
3821 { /* need this special case */
3822 params
= nasm_malloc(sizeof(*params
));
3825 params
[nparam
] = NULL
;
3826 *params_array
= params
;
3830 * This one wasn't right: look for the next one with the
3833 for (m
= m
->next
; m
; m
= m
->next
)
3834 if (!mstrcmp(m
->name
, tline
->text
, m
->casesense
))
3839 * After all that, we didn't find one with the right number of
3840 * parameters. Issue a warning, and fail to expand the macro.
3842 error(ERR_WARNING
| ERR_WARN_MNP
,
3843 "macro `%s' exists, but not taking %d parameters",
3844 tline
->text
, nparam
);
3850 * Expand the multi-line macro call made by the given line, if
3851 * there is one to be expanded. If there is, push the expansion on
3852 * istk->expansion and return 1. Otherwise return 0.
3855 expand_mmacro(Token
* tline
)
3857 Token
*startline
= tline
;
3858 Token
*label
= NULL
;
3859 int dont_prepend
= 0;
3860 Token
**params
, *t
, *tt
;
3863 int i
, nparam
, *paramlen
;
3867 /* if (!tok_type_(t, TOK_ID)) Lino 02/25/02 */
3868 if (!tok_type_(t
, TOK_ID
) && !tok_type_(t
, TOK_PREPROC_ID
))
3870 m
= is_mmacro(t
, ¶ms
);
3875 * We have an id which isn't a macro call. We'll assume
3876 * it might be a label; we'll also check to see if a
3877 * colon follows it. Then, if there's another id after
3878 * that lot, we'll check it again for macro-hood.
3882 if (tok_type_(t
, TOK_WHITESPACE
))
3883 last
= t
, t
= t
->next
;
3884 if (tok_is_(t
, ":"))
3887 last
= t
, t
= t
->next
;
3888 if (tok_type_(t
, TOK_WHITESPACE
))
3889 last
= t
, t
= t
->next
;
3891 if (!tok_type_(t
, TOK_ID
) || (m
= is_mmacro(t
, ¶ms
)) == NULL
)
3898 * Fix up the parameters: this involves stripping leading and
3899 * trailing whitespace, then stripping braces if they are
3902 for (nparam
= 0; params
[nparam
]; nparam
++)
3904 paramlen
= nparam
? nasm_malloc(nparam
* sizeof(*paramlen
)) : NULL
;
3906 for (i
= 0; params
[i
]; i
++)
3909 int comma
= (!m
->plus
|| i
< nparam
- 1);
3913 if (tok_is_(t
, "{"))
3914 t
= t
->next
, brace
= TRUE
, comma
= FALSE
;
3919 if (comma
&& t
->type
== TOK_OTHER
&& !strcmp(t
->text
, ","))
3920 break; /* ... because we have hit a comma */
3921 if (comma
&& t
->type
== TOK_WHITESPACE
&& tok_is_(t
->next
, ","))
3922 break; /* ... or a space then a comma */
3923 if (brace
&& t
->type
== TOK_OTHER
&& !strcmp(t
->text
, "}"))
3924 break; /* ... or a brace */
3931 * OK, we have a MMacro structure together with a set of
3932 * parameters. We must now go through the expansion and push
3933 * copies of each Line on to istk->expansion. Substitution of
3934 * parameter tokens and macro-local tokens doesn't get done
3935 * until the single-line macro substitution process; this is
3936 * because delaying them allows us to change the semantics
3937 * later through %rotate.
3939 * First, push an end marker on to istk->expansion, mark this
3940 * macro as in progress, and set up its invocation-specific
3943 ll
= nasm_malloc(sizeof(Line
));
3944 ll
->next
= istk
->expansion
;
3947 istk
->expansion
= ll
;
3949 m
->in_progress
= TRUE
;
3954 m
->paramlen
= paramlen
;
3955 m
->unique
= unique
++;
3958 m
->next_active
= istk
->mstk
;
3961 for (l
= m
->expansion
; l
; l
= l
->next
)
3965 ll
= nasm_malloc(sizeof(Line
));
3966 ll
->finishes
= NULL
;
3967 ll
->next
= istk
->expansion
;
3968 istk
->expansion
= ll
;
3971 for (t
= l
->first
; t
; t
= t
->next
)
3974 if (t
->type
== TOK_PREPROC_ID
&&
3975 t
->text
[1] == '0' && t
->text
[2] == '0')
3982 tt
= *tail
= new_Token(NULL
, x
->type
, x
->text
, 0);
3989 * If we had a label, push it on as the first line of
3990 * the macro expansion.
3994 if (dont_prepend
< 0)
3995 free_tlist(startline
);
3998 ll
= nasm_malloc(sizeof(Line
));
3999 ll
->finishes
= NULL
;
4000 ll
->next
= istk
->expansion
;
4001 istk
->expansion
= ll
;
4002 ll
->first
= startline
;
4006 label
= label
->next
;
4007 label
->next
= tt
= new_Token(NULL
, TOK_OTHER
, ":", 0);
4012 list
->uplevel(m
->nolist
? LIST_MACRO_NOLIST
: LIST_MACRO
);
4018 * Since preprocessor always operate only on the line that didn't
4019 * arrived yet, we should always use ERR_OFFBY1. Also since user
4020 * won't want to see same error twice (preprocessing is done once
4021 * per pass) we will want to show errors only during pass one.
4024 error(int severity
, const char *fmt
, ...)
4029 /* If we're in a dead branch of IF or something like it, ignore the error */
4030 if (istk
&& istk
->conds
&& !emitting(istk
->conds
->state
))
4034 vsprintf(buff
, fmt
, arg
);
4037 if (istk
&& istk
->mstk
&& istk
->mstk
->name
)
4038 _error(severity
| ERR_PASS1
, "(%s:%d) %s", istk
->mstk
->name
,
4039 istk
->mstk
->lineno
, buff
);
4041 _error(severity
| ERR_PASS1
, "%s", buff
);
4045 pp_reset(char *file
, int apass
, efunc errfunc
, evalfunc eval
,
4052 istk
= nasm_malloc(sizeof(Include
));
4055 istk
->expansion
= NULL
;
4057 istk
->fp
= fopen(file
, "r");
4059 src_set_fname(nasm_strdup(file
));
4063 error(ERR_FATAL
| ERR_NOFILE
, "unable to open input file `%s'", file
);
4065 for (h
= 0; h
< NHASH
; h
++)
4071 if (tasm_compatible_mode
) {
4074 stdmacpos
= &stdmac
[TASM_MACRO_COUNT
];
4076 any_extrastdmac
= (extrastdmac
!= NULL
);
4091 * Fetch a tokenised line, either from the macro-expansion
4092 * buffer or from the input file.
4095 while (istk
->expansion
&& istk
->expansion
->finishes
)
4097 Line
*l
= istk
->expansion
;
4098 if (!l
->finishes
->name
&& l
->finishes
->in_progress
> 1)
4103 * This is a macro-end marker for a macro with no
4104 * name, which means it's not really a macro at all
4105 * but a %rep block, and the `in_progress' field is
4106 * more than 1, meaning that we still need to
4107 * repeat. (1 means the natural last repetition; 0
4108 * means termination by %exitrep.) We have
4109 * therefore expanded up to the %endrep, and must
4110 * push the whole block on to the expansion buffer
4111 * again. We don't bother to remove the macro-end
4112 * marker: we'd only have to generate another one
4115 l
->finishes
->in_progress
--;
4116 for (l
= l
->finishes
->expansion
; l
; l
= l
->next
)
4118 Token
*t
, *tt
, **tail
;
4120 ll
= nasm_malloc(sizeof(Line
));
4121 ll
->next
= istk
->expansion
;
4122 ll
->finishes
= NULL
;
4126 for (t
= l
->first
; t
; t
= t
->next
)
4128 if (t
->text
|| t
->type
== TOK_WHITESPACE
)
4130 tt
= *tail
= new_Token(NULL
, t
->type
, t
->text
, 0);
4135 istk
->expansion
= ll
;
4141 * Check whether a `%rep' was started and not ended
4142 * within this macro expansion. This can happen and
4143 * should be detected. It's a fatal error because
4144 * I'm too confused to work out how to recover
4150 error(ERR_PANIC
, "defining with name in expansion");
4151 else if (istk
->mstk
->name
)
4152 error(ERR_FATAL
, "`%%rep' without `%%endrep' within"
4153 " expansion of macro `%s'", istk
->mstk
->name
);
4157 * FIXME: investigate the relationship at this point between
4158 * istk->mstk and l->finishes
4161 MMacro
*m
= istk
->mstk
;
4162 istk
->mstk
= m
->next_active
;
4166 * This was a real macro call, not a %rep, and
4167 * therefore the parameter information needs to
4170 nasm_free(m
->params
);
4171 free_tlist(m
->iline
);
4172 nasm_free(m
->paramlen
);
4173 l
->finishes
->in_progress
= FALSE
;
4178 istk
->expansion
= l
->next
;
4180 list
->downlevel(LIST_MACRO
);
4184 { /* until we get a line we can use */
4186 if (istk
->expansion
)
4187 { /* from a macro expansion */
4189 Line
*l
= istk
->expansion
;
4191 istk
->mstk
->lineno
++;
4193 istk
->expansion
= l
->next
;
4195 p
= detoken(tline
, FALSE
);
4196 list
->line(LIST_MACRO
, p
);
4202 { /* from the current input file */
4203 line
= prepreproc(line
);
4204 tline
= tokenise(line
);
4209 * The current file has ended; work down the istk
4215 error(ERR_FATAL
, "expected `%%endif' before end of file");
4216 /* only set line and file name if there's a next node */
4219 src_set_linnum(i
->lineno
);
4220 nasm_free(src_set_fname(i
->fname
));
4223 list
->downlevel(LIST_INCLUDE
);
4231 * We must expand MMacro parameters and MMacro-local labels
4232 * _before_ we plunge into directive processing, to cope
4233 * with things like `%define something %1' such as STRUC
4234 * uses. Unless we're _defining_ a MMacro, in which case
4235 * those tokens should be left alone to go into the
4236 * definition; and unless we're in a non-emitting
4237 * condition, in which case we don't want to meddle with
4240 if (!defining
&& !(istk
->conds
&& !emitting(istk
->conds
->state
)))
4241 tline
= expand_mmac_params(tline
);
4244 * Check the line to see if it's a preprocessor directive.
4246 if (do_directive(tline
) == DIRECTIVE_FOUND
)
4253 * We're defining a multi-line macro. We emit nothing
4255 * shove the tokenised line on to the macro definition.
4257 Line
*l
= nasm_malloc(sizeof(Line
));
4258 l
->next
= defining
->expansion
;
4260 l
->finishes
= FALSE
;
4261 defining
->expansion
= l
;
4264 else if (istk
->conds
&& !emitting(istk
->conds
->state
))
4267 * We're in a non-emitting branch of a condition block.
4268 * Emit nothing at all, not even a blank line: when we
4269 * emerge from the condition we'll give a line-number
4270 * directive so we keep our place correctly.
4275 else if (istk
->mstk
&& !istk
->mstk
->in_progress
)
4278 * We're in a %rep block which has been terminated, so
4279 * we're walking through to the %endrep without
4280 * emitting anything. Emit nothing at all, not even a
4281 * blank line: when we emerge from the %rep block we'll
4282 * give a line-number directive so we keep our place
4290 tline
= expand_smacro(tline
);
4291 if (!expand_mmacro(tline
))
4294 * De-tokenise the line again, and emit it.
4296 line
= detoken(tline
, TRUE
);
4302 continue; /* expand_mmacro calls free_tlist */
4311 pp_cleanup(int pass
)
4317 error(ERR_NONFATAL
, "end of file while still defining macro `%s'",
4319 free_mmacro(defining
);
4323 for (h
= 0; h
< NHASH
; h
++)
4327 MMacro
*m
= mmacros
[h
];
4328 mmacros
[h
] = mmacros
[h
]->next
;
4333 SMacro
*s
= smacros
[h
];
4334 smacros
[h
] = smacros
[h
]->next
;
4336 free_tlist(s
->expansion
);
4345 nasm_free(i
->fname
);
4358 pp_include_path(char *path
)
4361 /* by alexfru: order of path inclusion fixed (was reverse order) */
4362 i
= nasm_malloc(sizeof(IncPath
));
4363 i
->path
= nasm_strdup(path
);
4369 while (j
->next
!= NULL
)
4382 * This function is used to "export" the include paths, e.g.
4383 * the paths specified in the '-I' command switch.
4384 * The need for such exporting is due to the 'incbin' directive,
4385 * which includes raw binary files (unlike '%include', which
4386 * includes text source files). It would be real nice to be
4387 * able to specify paths to search for incbin'ned files also.
4388 * So, this is a simple workaround.
4390 * The function use is simple:
4392 * The 1st call (with NULL argument) returns a pointer to the 1st path
4393 * (char** type) or NULL if none include paths available.
4395 * All subsequent calls take as argument the value returned by this
4396 * function last. The return value is either the next path
4397 * (char** type) or NULL if the end of the paths list is reached.
4399 * It is maybe not the best way to do things, but I didn't want
4400 * to export too much, just one or two functions and no types or
4401 * variables exported.
4403 * Can't say I like the current situation with e.g. this path list either,
4404 * it seems to be never deallocated after creation...
4407 pp_get_include_path_ptr (char **pPrevPath
)
4409 /* This macro returns offset of a member of a structure */
4410 #define GetMemberOffset(StructType,MemberName)\
4411 ((size_t)&((StructType*)0)->MemberName)
4414 if (pPrevPath
== NULL
)
4417 return &ipath
->path
;
4421 i
= (IncPath
*) ((char*)pPrevPath
- GetMemberOffset(IncPath
,path
));
4427 #undef GetMemberOffset
4431 pp_pre_include(char *fname
)
4433 Token
*inc
, *space
, *name
;
4436 name
= new_Token(NULL
, TOK_INTERNAL_STRING
, fname
, 0);
4437 space
= new_Token(name
, TOK_WHITESPACE
, NULL
, 0);
4438 inc
= new_Token(space
, TOK_PREPROC_ID
, "%include", 0);
4440 l
= nasm_malloc(sizeof(Line
));
4443 l
->finishes
= FALSE
;
4448 pp_pre_define(char *definition
)
4454 equals
= strchr(definition
, '=');
4455 space
= new_Token(NULL
, TOK_WHITESPACE
, NULL
, 0);
4456 def
= new_Token(space
, TOK_PREPROC_ID
, "%define", 0);
4459 space
->next
= tokenise(definition
);
4463 l
= nasm_malloc(sizeof(Line
));
4466 l
->finishes
= FALSE
;
4471 pp_pre_undefine(char *definition
)
4476 space
= new_Token(NULL
, TOK_WHITESPACE
, NULL
, 0);
4477 def
= new_Token(space
, TOK_PREPROC_ID
, "%undef", 0);
4478 space
->next
= tokenise(definition
);
4480 l
= nasm_malloc(sizeof(Line
));
4483 l
->finishes
= FALSE
;
4488 pp_extra_stdmac(const char **macros
)
4490 extrastdmac
= macros
;
4494 make_tok_num(Token
* tok
, long val
)
4497 sprintf(numbuf
, "%ld", val
);
4498 tok
->text
= nasm_strdup(numbuf
);
4499 tok
->type
= TOK_NUMBER
;