-/* macro.c - macro support for gas and gasp
- Copyright (C) 1994, 95, 96, 97, 98, 99, 2000
- Free Software Foundation, Inc.
+/* macro.c - macro support for gas
+ Copyright (C) 1994-2020 Free Software Foundation, Inc.
Written by Steve and Judy Chamberlain of Cygnus Support,
sac@cygnus.com
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
-
-#include "config.h"
-
-/* AIX requires this to be the first thing in the file. */
-#ifdef __GNUC__
-# ifndef alloca
-# ifdef __STDC__
-extern void *alloca ();
-# else
-extern char *alloca ();
-# endif
-# endif
-#else
-# if HAVE_ALLOCA_H
-# include <alloca.h>
-# else
-# ifdef _AIX
- #pragma alloca
-# else
-# ifndef alloca /* predefined by HP cc +Olibcalls */
-# if !defined (__STDC__) && !defined (__hpux)
-extern char *alloca ();
-# else
-extern void *alloca ();
-# endif /* __STDC__, __hpux */
-# endif /* alloca */
-# endif /* _AIX */
-# endif /* HAVE_ALLOCA_H */
-#endif
-
-#include <stdio.h>
-#ifdef HAVE_STRING_H
-#include <string.h>
-#else
-#include <strings.h>
-#endif
-#include <ctype.h>
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include "libiberty.h"
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+#include "as.h"
+#include "safe-ctype.h"
#include "sb.h"
-#include "hash.h"
#include "macro.h"
-#include "asintl.h"
-
/* The routines in this file handle macro definition and expansion.
- They are called by both gasp and gas. */
-
-/* Internal functions. */
-
-static int get_token PARAMS ((int, sb *, sb *));
-static int getstring PARAMS ((int, sb *, sb *));
-static int get_any_string PARAMS ((int, sb *, sb *, int, int));
-static int do_formals PARAMS ((macro_entry *, int, sb *));
-static int get_apost_token PARAMS ((int, sb *, sb *, int));
-static int sub_actual
- PARAMS ((int, sb *, sb *, struct hash_control *, int, sb *, int));
-static const char *macro_expand_body
- PARAMS ((sb *, sb *, formal_entry *, struct hash_control *, int, int));
-static const char *macro_expand PARAMS ((int, sb *, macro_entry *, sb *, int));
+ They are called by gas. */
#define ISWHITE(x) ((x) == ' ' || (x) == '\t')
/* The macro hash table. */
-static struct hash_control *macro_hash;
+struct hash_control *macro_hash;
/* Whether any macros have been defined. */
int macro_defined;
-/* Whether we are in GASP alternate mode. */
+/* Whether we are in alternate syntax mode. */
static int macro_alternate;
/* Function to use to parse an expression. */
-static int (*macro_expr) PARAMS ((const char *, int, sb *, int *));
+static size_t (*macro_expr) (const char *, size_t, sb *, offsetT *);
/* Number of macro expansions that have been done. */
/* Initialize macro processing. */
void
-macro_init (alternate, mri, strip_at, expr)
- int alternate;
- int mri;
- int strip_at;
- int (*expr) PARAMS ((const char *, int, sb *, int *));
+macro_init (int alternate, int mri, int strip_at,
+ size_t (*exp) (const char *, size_t, sb *, offsetT *))
{
macro_hash = hash_new ();
macro_defined = 0;
macro_alternate = alternate;
macro_mri = mri;
macro_strip_at = strip_at;
- macro_expr = expr;
+ macro_expr = exp;
+}
+
+/* Switch in and out of alternate mode on the fly. */
+
+void
+macro_set_alternate (int alternate)
+{
+ macro_alternate = alternate;
}
/* Switch in and out of MRI mode on the fly. */
void
-macro_mri_mode (mri)
- int mri;
+macro_mri_mode (int mri)
{
macro_mri = mri;
}
/* Read input lines till we get to a TO string.
Increase nesting depth if we get a FROM string.
Put the results into sb at PTR.
+ FROM may be NULL (or will be ignored) if TO is "ENDR".
Add a new input line to an sb using GET_LINE.
Return 1 on success, 0 on unexpected EOF. */
int
-buffer_and_nest (from, to, ptr, get_line)
- const char *from;
- const char *to;
- sb *ptr;
- int (*get_line) PARAMS ((sb *));
+buffer_and_nest (const char *from, const char *to, sb *ptr,
+ size_t (*get_line) (sb *))
{
- int from_len = strlen (from);
- int to_len = strlen (to);
+ size_t from_len;
+ size_t to_len = strlen (to);
int depth = 1;
- int line_start = ptr->len;
+ size_t line_start = ptr->len;
+ size_t more = get_line (ptr);
- int more = get_line (ptr);
+ if (to_len == 4 && strcasecmp (to, "ENDR") == 0)
+ {
+ from = NULL;
+ from_len = 0;
+ }
+ else
+ from_len = strlen (from);
while (more)
{
- /* Try and find the first pseudo op on the line. */
- int i = line_start;
+ /* Try to find the first pseudo op on the line. */
+ size_t i = line_start;
+ bfd_boolean had_colon = FALSE;
- if (! macro_alternate && ! macro_mri)
- {
- /* With normal syntax we can suck what we want till we get
- to the dot. With the alternate, labels have to start in
- the first column, since we cant tell what's a label and
- whats a pseudoop. */
+ /* With normal syntax we can suck what we want till we get
+ to the dot. With the alternate, labels have to start in
+ the first column, since we can't tell what's a label and
+ what's a pseudoop. */
+ if (! LABELS_WITHOUT_COLONS)
+ {
/* Skip leading whitespace. */
while (i < ptr->len && ISWHITE (ptr->ptr[i]))
i++;
+ }
- /* Skip over a label. */
- while (i < ptr->len
- && (isalnum ((unsigned char) ptr->ptr[i])
- || ptr->ptr[i] == '_'
- || ptr->ptr[i] == '$'))
+ for (;;)
+ {
+ /* Skip over a label, if any. */
+ if (i >= ptr->len || ! is_name_beginner (ptr->ptr[i]))
+ break;
+ i++;
+ while (i < ptr->len && is_part_of_name (ptr->ptr[i]))
i++;
-
- /* And a colon. */
- if (i < ptr->len
- && ptr->ptr[i] == ':')
+ if (i < ptr->len && is_name_ender (ptr->ptr[i]))
i++;
-
+ /* Skip whitespace. */
+ while (i < ptr->len && ISWHITE (ptr->ptr[i]))
+ i++;
+ /* Check for the colon. */
+ if (i >= ptr->len || ptr->ptr[i] != ':')
+ {
+ /* LABELS_WITHOUT_COLONS doesn't mean we cannot have a
+ colon after a label. If we do have a colon on the
+ first label then handle more than one label on the
+ line, assuming that each label has a colon. */
+ if (LABELS_WITHOUT_COLONS && !had_colon)
+ break;
+ i = line_start;
+ break;
+ }
+ i++;
+ line_start = i;
+ had_colon = TRUE;
}
+
/* Skip trailing whitespace. */
while (i < ptr->len && ISWHITE (ptr->ptr[i]))
i++;
if (i < ptr->len && (ptr->ptr[i] == '.'
- || macro_alternate
+ || NO_PSEUDO_DOT
|| macro_mri))
{
- if (ptr->ptr[i] == '.')
+ if (! flag_m68k_mri && ptr->ptr[i] == '.')
i++;
- if (strncasecmp (ptr->ptr + i, from, from_len) == 0
+ if (from == NULL
+ && strncasecmp (ptr->ptr + i, "IRPC", from_len = 4) != 0
+ && strncasecmp (ptr->ptr + i, "IRP", from_len = 3) != 0
+ && strncasecmp (ptr->ptr + i, "IREPC", from_len = 5) != 0
+ && strncasecmp (ptr->ptr + i, "IREP", from_len = 4) != 0
+ && strncasecmp (ptr->ptr + i, "REPT", from_len = 4) != 0
+ && strncasecmp (ptr->ptr + i, "REP", from_len = 3) != 0)
+ from_len = 0;
+ if ((from != NULL
+ ? strncasecmp (ptr->ptr + i, from, from_len) == 0
+ : from_len > 0)
&& (ptr->len == (i + from_len)
- || ! isalnum (ptr->ptr[i + from_len])))
+ || ! (is_part_of_name (ptr->ptr[i + from_len])
+ || is_name_ender (ptr->ptr[i + from_len]))))
depth++;
if (strncasecmp (ptr->ptr + i, to, to_len) == 0
&& (ptr->len == (i + to_len)
- || ! isalnum (ptr->ptr[i + to_len])))
+ || ! (is_part_of_name (ptr->ptr[i + to_len])
+ || is_name_ender (ptr->ptr[i + to_len]))))
{
depth--;
if (depth == 0)
break;
}
}
+
+ /* PR gas/16908
+ Apply and discard .linefile directives that appear within
+ the macro. For long macros, one might want to report the
+ line number information associated with the lines within
+ the macro definition, but we would need more infrastructure
+ to make that happen correctly (e.g. resetting the line
+ number when expanding the macro), and since for short
+ macros we clearly prefer reporting the point of expansion
+ anyway, there's not an obviously better fix here. */
+ if (strncasecmp (ptr->ptr + i, "linefile", 8) == 0)
+ {
+ char saved_eol_char = ptr->ptr[ptr->len];
+
+ ptr->ptr[ptr->len] = '\0';
+ temp_ilp (ptr->ptr + i + 8);
+ s_app_line (0);
+ restore_ilp ();
+ ptr->ptr[ptr->len] = saved_eol_char;
+ ptr->len = line_start;
+ }
}
- /* Add a CR to the end and keep running. */
- sb_add_char (ptr, '\n');
+ /* Add the original end-of-line char to the end and keep running. */
+ sb_add_char (ptr, more);
line_start = ptr->len;
more = get_line (ptr);
}
/* Pick up a token. */
-static int
-get_token (idx, in, name)
- int idx;
- sb *in;
- sb *name;
+static size_t
+get_token (size_t idx, sb *in, sb *name)
{
if (idx < in->len
- && (isalpha ((unsigned char) in->ptr[idx])
- || in->ptr[idx] == '_'
- || in->ptr[idx] == '$'))
+ && is_name_beginner (in->ptr[idx]))
{
sb_add_char (name, in->ptr[idx++]);
while (idx < in->len
- && (isalnum ((unsigned char) in->ptr[idx])
- || in->ptr[idx] == '_'
- || in->ptr[idx] == '$'))
+ && is_part_of_name (in->ptr[idx]))
+ {
+ sb_add_char (name, in->ptr[idx++]);
+ }
+ if (idx < in->len
+ && is_name_ender (in->ptr[idx]))
{
sb_add_char (name, in->ptr[idx++]);
}
/* Pick up a string. */
-static int
-getstring (idx, in, acc)
- int idx;
- sb *in;
- sb *acc;
+static size_t
+getstring (size_t idx, sb *in, sb *acc)
{
- idx = sb_skip_white (idx, in);
-
while (idx < in->len
&& (in->ptr[idx] == '"'
|| (in->ptr[idx] == '<' && (macro_alternate || macro_mri))
{
int nest = 0;
idx++;
- while ((in->ptr[idx] != '>' || nest)
- && idx < in->len)
+ while (idx < in->len
+ && (in->ptr[idx] != '>' || nest))
{
if (in->ptr[idx] == '!')
{
/* Fetch string from the input stream,
rules:
'Bxyx<whitespace> -> return 'Bxyza
- %<char> -> return string of decimal value of x
- "<string>" -> return string
- xyx<whitespace> -> return xyz
-*/
-
-static int
-get_any_string (idx, in, out, expand, pretend_quoted)
- int idx;
- sb *in;
- sb *out;
- int expand;
- int pretend_quoted;
+ %<expr> -> return string of decimal value of <expr>
+ "string" -> return string
+ (string) -> return (string-including-whitespaces)
+ xyx<whitespace> -> return xyz. */
+
+static size_t
+get_any_string (size_t idx, sb *in, sb *out)
{
sb_reset (out);
idx = sb_skip_white (idx, in);
if (idx < in->len)
{
- if (in->len > 2 && in->ptr[idx + 1] == '\'' && ISBASE (in->ptr[idx]))
+ if (in->len > idx + 2 && in->ptr[idx + 1] == '\'' && ISBASE (in->ptr[idx]))
{
- while (!ISSEP (in->ptr[idx]))
+ while (idx < in->len && !ISSEP (in->ptr[idx]))
sb_add_char (out, in->ptr[idx++]);
}
- else if (in->ptr[idx] == '%'
- && macro_alternate
- && expand)
+ else if (in->ptr[idx] == '%' && macro_alternate)
{
- int val;
- char buf[20];
+ offsetT val;
+ char buf[64];
+
/* Turns the next expression into a string. */
+ /* xgettext: no-c-format */
idx = (*macro_expr) (_("% operator needs absolute expression"),
idx + 1,
in,
&val);
- sprintf(buf, "%d", val);
+ sprintf (buf, "%" BFD_VMA_FMT "d", val);
sb_add_string (out, buf);
}
else if (in->ptr[idx] == '"'
|| (in->ptr[idx] == '<' && (macro_alternate || macro_mri))
|| (macro_alternate && in->ptr[idx] == '\''))
{
- if (macro_alternate
- && ! macro_strip_at
- && expand)
+ if (macro_alternate && ! macro_strip_at && in->ptr[idx] != '<')
{
/* Keep the quotes. */
- sb_add_char (out, '\"');
-
+ sb_add_char (out, '"');
idx = getstring (idx, in, out);
- sb_add_char (out, '\"');
+ sb_add_char (out, '"');
}
else
{
}
else
{
+ char *br_buf = XNEWVEC (char, 1);
+ char *in_br = br_buf;
+
+ *in_br = '\0';
while (idx < in->len
- && (in->ptr[idx] == '"'
- || in->ptr[idx] == '\''
- || pretend_quoted
+ && (*in_br
|| (in->ptr[idx] != ' '
- && in->ptr[idx] != '\t'
- && in->ptr[idx] != ','
- && (in->ptr[idx] != '<'
- || (! macro_alternate && ! macro_mri)))))
+ && in->ptr[idx] != '\t'))
+ && in->ptr[idx] != ','
+ && (in->ptr[idx] != '<'
+ || (! macro_alternate && ! macro_mri)))
{
- if (in->ptr[idx] == '"'
- || in->ptr[idx] == '\'')
+ char tchar = in->ptr[idx];
+
+ switch (tchar)
{
- char tchar = in->ptr[idx];
+ case '"':
+ case '\'':
sb_add_char (out, in->ptr[idx++]);
while (idx < in->len
&& in->ptr[idx] != tchar)
sb_add_char (out, in->ptr[idx++]);
if (idx == in->len)
- return idx;
+ {
+ free (br_buf);
+ return idx;
+ }
+ break;
+ case '(':
+ case '[':
+ if (in_br > br_buf)
+ --in_br;
+ else
+ {
+ br_buf = XNEWVEC (char, strlen (in_br) + 2);
+ strcpy (br_buf + 1, in_br);
+ free (in_br);
+ in_br = br_buf;
+ }
+ *in_br = tchar;
+ break;
+ case ')':
+ if (*in_br == '(')
+ ++in_br;
+ break;
+ case ']':
+ if (*in_br == '[')
+ ++in_br;
+ break;
}
- sb_add_char (out, in->ptr[idx++]);
+ sb_add_char (out, tchar);
+ ++idx;
}
+ free (br_buf);
}
}
return idx;
}
+/* Allocate a new formal. */
+
+static formal_entry *
+new_formal (void)
+{
+ formal_entry *formal;
+
+ formal = XNEW (formal_entry);
+
+ sb_new (&formal->name);
+ sb_new (&formal->def);
+ sb_new (&formal->actual);
+ formal->next = NULL;
+ formal->type = FORMAL_OPTIONAL;
+ return formal;
+}
+
+/* Free a formal. */
+
+static void
+del_formal (formal_entry *formal)
+{
+ sb_kill (&formal->actual);
+ sb_kill (&formal->def);
+ sb_kill (&formal->name);
+ free (formal);
+}
+
/* Pick up the formal parameters of a macro definition. */
-static int
-do_formals (macro, idx, in)
- macro_entry *macro;
- int idx;
- sb *in;
+static size_t
+do_formals (macro_entry *macro, size_t idx, sb *in)
{
formal_entry **p = ¯o->formals;
+ const char *name;
- macro->formal_count = 0;
- macro->formal_hash = hash_new ();
+ idx = sb_skip_white (idx, in);
while (idx < in->len)
{
- formal_entry *formal;
-
- formal = (formal_entry *) xmalloc (sizeof (formal_entry));
+ formal_entry *formal = new_formal ();
+ size_t cidx;
- sb_new (&formal->name);
- sb_new (&formal->def);
- sb_new (&formal->actual);
-
- idx = sb_skip_white (idx, in);
idx = get_token (idx, in, &formal->name);
if (formal->name.len == 0)
- break;
+ {
+ if (macro->formal_count)
+ --idx;
+ del_formal (formal); /* 'formal' goes out of scope. */
+ break;
+ }
idx = sb_skip_white (idx, in);
- if (formal->name.len)
+ /* This is a formal. */
+ name = sb_terminate (&formal->name);
+ if (! macro_mri
+ && idx < in->len
+ && in->ptr[idx] == ':'
+ && (! is_name_beginner (':')
+ || idx + 1 >= in->len
+ || ! is_part_of_name (in->ptr[idx + 1])))
{
- /* This is a formal. */
- if (idx < in->len && in->ptr[idx] == '=')
+ /* Got a qualifier. */
+ sb qual;
+
+ sb_new (&qual);
+ idx = get_token (sb_skip_white (idx + 1, in), in, &qual);
+ sb_terminate (&qual);
+ if (qual.len == 0)
+ as_bad_where (macro->file,
+ macro->line,
+ _("Missing parameter qualifier for `%s' in macro `%s'"),
+ name,
+ macro->name);
+ else if (strcmp (qual.ptr, "req") == 0)
+ formal->type = FORMAL_REQUIRED;
+ else if (strcmp (qual.ptr, "vararg") == 0)
+ formal->type = FORMAL_VARARG;
+ else
+ as_bad_where (macro->file,
+ macro->line,
+ _("`%s' is not a valid parameter qualifier for `%s' in macro `%s'"),
+ qual.ptr,
+ name,
+ macro->name);
+ sb_kill (&qual);
+ idx = sb_skip_white (idx, in);
+ }
+ if (idx < in->len && in->ptr[idx] == '=')
+ {
+ /* Got a default. */
+ idx = get_any_string (idx + 1, in, &formal->def);
+ idx = sb_skip_white (idx, in);
+ if (formal->type == FORMAL_REQUIRED)
{
- /* Got a default. */
- idx = get_any_string (idx + 1, in, &formal->def, 1, 0);
+ sb_reset (&formal->def);
+ as_warn_where (macro->file,
+ macro->line,
+ _("Pointless default value for required parameter `%s' in macro `%s'"),
+ name,
+ macro->name);
}
}
/* Add to macro's hash table. */
- hash_jam (macro->formal_hash, sb_terminate (&formal->name), formal);
+ if (! hash_find (macro->formal_hash, name))
+ hash_jam (macro->formal_hash, name, formal);
+ else
+ as_bad_where (macro->file,
+ macro->line,
+ _("A parameter named `%s' already exists for macro `%s'"),
+ name,
+ macro->name);
- formal->index = macro->formal_count;
- idx = sb_skip_comma (idx, in);
- macro->formal_count++;
+ formal->index = macro->formal_count++;
*p = formal;
p = &formal->next;
- *p = NULL;
+ if (formal->type == FORMAL_VARARG)
+ break;
+ cidx = idx;
+ idx = sb_skip_comma (idx, in);
+ if (idx != cidx && idx >= in->len)
+ {
+ idx = cidx;
+ break;
+ }
}
if (macro_mri)
{
- formal_entry *formal;
- const char *name;
+ formal_entry *formal = new_formal ();
/* Add a special NARG formal, which macro_expand will set to the
- number of arguments. */
- formal = (formal_entry *) xmalloc (sizeof (formal_entry));
-
- sb_new (&formal->name);
- sb_new (&formal->def);
- sb_new (&formal->actual);
-
+ number of arguments. */
/* The same MRI assemblers which treat '@' characters also use
- the name $NARG. At least until we find an exception. */
+ the name $NARG. At least until we find an exception. */
if (macro_strip_at)
name = "$NARG";
else
sb_add_string (&formal->name, name);
/* Add to macro's hash table. */
+ if (hash_find (macro->formal_hash, name))
+ as_bad_where (macro->file,
+ macro->line,
+ _("Reserved word `%s' used as parameter in macro `%s'"),
+ name,
+ macro->name);
hash_jam (macro->formal_hash, name, formal);
formal->index = NARG_INDEX;
*p = formal;
- formal->next = NULL;
}
return idx;
}
+/* Free the memory allocated to a macro. */
+
+static void
+free_macro (macro_entry *macro)
+{
+ formal_entry *formal;
+
+ for (formal = macro->formals; formal; )
+ {
+ formal_entry *f;
+
+ f = formal;
+ formal = formal->next;
+ del_formal (f);
+ }
+ hash_die (macro->formal_hash);
+ sb_kill (¯o->sub);
+ free (macro);
+}
+
/* Define a new macro. Returns NULL on success, otherwise returns an
error message. If NAMEP is not NULL, *NAMEP is set to the name of
the macro which was defined. */
const char *
-define_macro (idx, in, label, get_line, namep)
- int idx;
- sb *in;
- sb *label;
- int (*get_line) PARAMS ((sb *));
- const char **namep;
+define_macro (size_t idx, sb *in, sb *label,
+ size_t (*get_line) (sb *),
+ const char *file, unsigned int line,
+ const char **namep)
{
macro_entry *macro;
sb name;
- const char *namestr;
+ const char *error = NULL;
- macro = (macro_entry *) xmalloc (sizeof (macro_entry));
+ macro = XNEW (macro_entry);
sb_new (¯o->sub);
sb_new (&name);
+ macro->file = file;
+ macro->line = line;
macro->formal_count = 0;
macro->formals = 0;
+ macro->formal_hash = hash_new_sized (7);
idx = sb_skip_white (idx, in);
if (! buffer_and_nest ("MACRO", "ENDM", ¯o->sub, get_line))
- return _("unexpected end of file in macro definition");
+ error = _("unexpected end of file in macro `%s' definition");
if (label != NULL && label->len != 0)
{
sb_add_sb (&name, label);
+ macro->name = sb_terminate (&name);
if (idx < in->len && in->ptr[idx] == '(')
{
/* It's the label: MACRO (formals,...) sort */
idx = do_formals (macro, idx + 1, in);
- if (in->ptr[idx] != ')')
- return _("missing ) after formals");
+ if (idx < in->len && in->ptr[idx] == ')')
+ idx = sb_skip_white (idx + 1, in);
+ else if (!error)
+ error = _("missing `)' after formals in macro definition `%s'");
}
else
{
}
else
{
+ size_t cidx;
+
idx = get_token (idx, in, &name);
- idx = sb_skip_comma (idx, in);
- idx = do_formals (macro, idx, in);
+ macro->name = sb_terminate (&name);
+ if (name.len == 0)
+ error = _("Missing macro name");
+ cidx = sb_skip_white (idx, in);
+ idx = sb_skip_comma (cidx, in);
+ if (idx == cidx || idx < in->len)
+ idx = do_formals (macro, idx, in);
+ else
+ idx = cidx;
}
+ if (!error && idx < in->len)
+ error = _("Bad parameter list for macro `%s'");
/* And stick it in the macro hash table. */
for (idx = 0; idx < name.len; idx++)
- if (isupper ((unsigned char) name.ptr[idx]))
- name.ptr[idx] = tolower (name.ptr[idx]);
- namestr = sb_terminate (&name);
- hash_jam (macro_hash, namestr, (PTR) macro);
-
- macro_defined = 1;
+ name.ptr[idx] = TOLOWER (name.ptr[idx]);
+ if (hash_find (macro_hash, macro->name))
+ error = _("Macro `%s' was already defined");
+ if (!error)
+ error = hash_jam (macro_hash, macro->name, (void *) macro);
if (namep != NULL)
- *namep = namestr;
+ *namep = macro->name;
- return NULL;
+ if (!error)
+ macro_defined = 1;
+ else
+ free_macro (macro);
+
+ return error;
}
/* Scan a token, and then skip KIND. */
-static int
-get_apost_token (idx, in, name, kind)
- int idx;
- sb *in;
- sb *name;
- int kind;
+static size_t
+get_apost_token (size_t idx, sb *in, sb *name, int kind)
{
idx = get_token (idx, in, name);
if (idx < in->len
/* Substitute the actual value for a formal parameter. */
-static int
-sub_actual (start, in, t, formal_hash, kind, out, copyifnotthere)
- int start;
- sb *in;
- sb *t;
- struct hash_control *formal_hash;
- int kind;
- sb *out;
- int copyifnotthere;
+static size_t
+sub_actual (size_t start, sb *in, sb *t, struct hash_control *formal_hash,
+ int kind, sb *out, int copyifnotthere)
{
- int src;
+ size_t src;
formal_entry *ptr;
src = get_apost_token (start, in, t, kind);
{
/* Doing this permits people to use & in macro bodies. */
sb_add_char (out, '&');
+ sb_add_sb (out, t);
+ if (src != start && in->ptr[src - 1] == '&')
+ sb_add_char (out, '&');
}
else if (copyifnotthere)
{
/* Expand the body of a macro. */
static const char *
-macro_expand_body (in, out, formals, formal_hash, comment_char, locals)
- sb *in;
- sb *out;
- formal_entry *formals;
- struct hash_control *formal_hash;
- int comment_char;
- int locals;
+macro_expand_body (sb *in, sb *out, formal_entry *formals,
+ struct hash_control *formal_hash, const macro_entry *macro)
{
sb t;
- int src = 0;
- int inquote = 0;
+ size_t src = 0;
+ int inquote = 0, macro_line = 0;
formal_entry *loclist = NULL;
+ const char *err = NULL;
sb_new (&t);
- while (src < in->len)
+ while (src < in->len && !err)
{
if (in->ptr[src] == '&')
{
}
else
{
- /* FIXME: Why do we do this? */
+ /* Permit macro parameter substitution delineated with
+ an '&' prefix and optional '&' suffix. */
src = sub_actual (src + 1, in, &t, formal_hash, '&', out, 0);
}
}
else if (in->ptr[src] == '\\')
{
src++;
- if (in->ptr[src] == comment_char && comment_char != '\0')
- {
- /* This is a comment, just drop the rest of the line. */
- while (src < in->len
- && in->ptr[src] != '\n')
- src++;
- }
- else if (in->ptr[src] == '(')
+ if (src < in->len && in->ptr[src] == '(')
{
/* Sub in till the next ')' literally. */
src++;
{
sb_add_char (out, in->ptr[src++]);
}
- if (in->ptr[src] == ')')
+ if (src < in->len)
src++;
+ else if (!macro)
+ err = _("missing `)'");
else
- return _("missplaced )");
+ as_bad_where (macro->file, macro->line + macro_line, _("missing `)'"));
}
- else if (in->ptr[src] == '@')
+ else if (src < in->len && in->ptr[src] == '@')
{
/* Sub in the macro invocation number. */
- char buffer[10];
+ char buffer[12];
src++;
sprintf (buffer, "%d", macro_number);
sb_add_string (out, buffer);
}
- else if (in->ptr[src] == '&')
+ else if (src < in->len && in->ptr[src] == '&')
{
/* This is a preprocessor variable name, we don't do them
here. */
sb_add_char (out, '&');
src++;
}
- else if (macro_mri
- && isalnum ((unsigned char) in->ptr[src]))
+ else if (macro_mri && src < in->len && ISALNUM (in->ptr[src]))
{
int ind;
formal_entry *f;
- if (isdigit ((unsigned char) in->ptr[src]))
+ if (ISDIGIT (in->ptr[src]))
ind = in->ptr[src] - '0';
- else if (isupper ((unsigned char) in->ptr[src]))
+ else if (ISUPPER (in->ptr[src]))
ind = in->ptr[src] - 'A' + 10;
else
ind = in->ptr[src] - 'a' + 10;
}
}
else if ((macro_alternate || macro_mri)
- && (isalpha ((unsigned char) in->ptr[src])
- || in->ptr[src] == '_'
- || in->ptr[src] == '$')
+ && is_name_beginner (in->ptr[src])
&& (! inquote
|| ! macro_strip_at
|| (src > 0 && in->ptr[src - 1] == '@')))
{
- if (! locals
+ if (! macro
|| src + 5 >= in->len
|| strncasecmp (in->ptr + src, "LOCAL", 5) != 0
- || ! ISWHITE (in->ptr[src + 5]))
+ || ! ISWHITE (in->ptr[src + 5])
+ /* PR 11507: Skip keyword LOCAL if it is found inside a quoted string. */
+ || inquote)
{
sb_reset (&t);
src = sub_actual (src, in, &t, formal_hash,
}
else
{
- formal_entry *f;
-
src = sb_skip_white (src + 5, in);
- while (in->ptr[src] != '\n' && in->ptr[src] != comment_char)
+ while (in->ptr[src] != '\n')
{
- static int loccnt;
- char buf[20];
- const char *err;
-
- f = (formal_entry *) xmalloc (sizeof (formal_entry));
- sb_new (&f->name);
- sb_new (&f->def);
- sb_new (&f->actual);
- f->index = LOCAL_INDEX;
- f->next = loclist;
- loclist = f;
+ const char *name;
+ formal_entry *f = new_formal ();
src = get_token (src, in, &f->name);
- ++loccnt;
- sprintf (buf, "LL%04x", loccnt);
- sb_add_string (&f->actual, buf);
+ name = sb_terminate (&f->name);
+ if (! hash_find (formal_hash, name))
+ {
+ static int loccnt;
+ char buf[20];
+
+ f->index = LOCAL_INDEX;
+ f->next = loclist;
+ loclist = f;
- err = hash_jam (formal_hash, sb_terminate (&f->name), f);
- if (err != NULL)
- return err;
+ sprintf (buf, IS_ELF ? ".LL%04x" : "LL%04x", ++loccnt);
+ sb_add_string (&f->actual, buf);
+
+ err = hash_jam (formal_hash, name, f);
+ if (err != NULL)
+ break;
+ }
+ else
+ {
+ as_bad_where (macro->file,
+ macro->line + macro_line,
+ _("`%s' was already used as parameter (or another local) name"),
+ name);
+ del_formal (f);
+ }
src = sb_skip_comma (src, in);
}
}
}
- else if (comment_char != '\0'
- && in->ptr[src] == comment_char
- && src + 1 < in->len
- && in->ptr[src + 1] == comment_char
- && !inquote)
- {
- /* Two comment chars in a row cause the rest of the line to
- be dropped. */
- while (src < in->len && in->ptr[src] != '\n')
- src++;
- }
else if (in->ptr[src] == '"'
|| (macro_mri && in->ptr[src] == '\''))
{
if (ptr == NULL)
{
/* FIXME: We should really return a warning string here,
- but we can't, because the == might be in the MRI
- comment field, and, since the nature of the MRI
- comment field depends upon the exact instruction
- being used, we don't have enough information here to
- figure out whether it is or not. Instead, we leave
- the == in place, which should cause a syntax error if
- it is not in a comment. */
+ but we can't, because the == might be in the MRI
+ comment field, and, since the nature of the MRI
+ comment field depends upon the exact instruction
+ being used, we don't have enough information here to
+ figure out whether it is or not. Instead, we leave
+ the == in place, which should cause a syntax error if
+ it is not in a comment. */
sb_add_char (out, '=');
sb_add_char (out, '=');
sb_add_sb (out, &t);
}
else
{
+ if (in->ptr[src] == '\n')
+ ++macro_line;
sb_add_char (out, in->ptr[src++]);
}
}
while (loclist != NULL)
{
formal_entry *f;
+ const char *name;
f = loclist->next;
- /* Setting the value to NULL effectively deletes the entry. We
- avoid calling hash_delete because it doesn't reclaim memory. */
- hash_jam (formal_hash, sb_terminate (&loclist->name), NULL);
- sb_kill (&loclist->name);
- sb_kill (&loclist->def);
- sb_kill (&loclist->actual);
- free (loclist);
+ name = sb_terminate (&loclist->name);
+ hash_delete (formal_hash, name, f == NULL);
+ del_formal (loclist);
loclist = f;
}
- return NULL;
+ return err;
}
/* Assign values to the formal parameters of a macro, and expand the
body. */
static const char *
-macro_expand (idx, in, m, out, comment_char)
- int idx;
- sb *in;
- macro_entry *m;
- sb *out;
- int comment_char;
+macro_expand (size_t idx, sb *in, macro_entry *m, sb *out)
{
sb t;
formal_entry *ptr;
formal_entry *f;
- int is_positional = 0;
int is_keyword = 0;
int narg = 0;
- const char *err;
+ const char *err = NULL;
sb_new (&t);
if (macro_mri)
{
/* The macro may be called with an optional qualifier, which may
- be referred to in the macro body as \0. */
+ be referred to in the macro body as \0. */
if (idx < in->len && in->ptr[idx] == '.')
{
- formal_entry *n;
+ /* The Microtec assembler ignores this if followed by a white space.
+ (Macro invocation with empty extension) */
+ idx++;
+ if ( idx < in->len
+ && in->ptr[idx] != ' '
+ && in->ptr[idx] != '\t')
+ {
+ formal_entry *n = new_formal ();
- n = (formal_entry *) xmalloc (sizeof (formal_entry));
- sb_new (&n->name);
- sb_new (&n->def);
- sb_new (&n->actual);
- n->index = QUAL_INDEX;
+ n->index = QUAL_INDEX;
- n->next = m->formals;
- m->formals = n;
+ n->next = m->formals;
+ m->formals = n;
- idx = get_any_string (idx + 1, in, &n->actual, 1, 0);
+ idx = get_any_string (idx, in, &n->actual);
+ }
}
}
/* Peel off the actuals and store them away in the hash tables' actuals. */
idx = sb_skip_white (idx, in);
- while (idx < in->len && in->ptr[idx] != comment_char)
+ while (idx < in->len)
{
- int scan;
+ size_t scan;
/* Look and see if it's a positional or keyword arg. */
scan = idx;
sb_reset (&t);
idx = get_token (idx, in, &t);
if (in->ptr[idx] != '=')
- return _("confusion in formal parameters");
+ {
+ err = _("confusion in formal parameters");
+ break;
+ }
/* Lookup the formal in the macro's list. */
ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t));
if (!ptr)
- return _("macro formal argument does not exist");
+ {
+ as_bad (_("Parameter named `%s' does not exist for macro `%s'"),
+ t.ptr,
+ m->name);
+ sb_reset (&t);
+ idx = get_any_string (idx + 1, in, &t);
+ }
else
{
/* Insert this value into the right place. */
- sb_reset (&ptr->actual);
- idx = get_any_string (idx + 1, in, &ptr->actual, 0, 0);
+ if (ptr->actual.len)
+ {
+ as_warn (_("Value for parameter `%s' of macro `%s' was already specified"),
+ ptr->name.ptr,
+ m->name);
+ sb_reset (&ptr->actual);
+ }
+ idx = get_any_string (idx + 1, in, &ptr->actual);
if (ptr->actual.len > 0)
++narg;
}
}
else
{
- /* This is a positional arg. */
- is_positional = 1;
if (is_keyword)
- return _("can't mix positional and keyword arguments");
+ {
+ err = _("can't mix positional and keyword arguments");
+ break;
+ }
if (!f)
{
int c;
if (!macro_mri)
- return _("too many positional arguments");
+ {
+ err = _("too many positional arguments");
+ break;
+ }
- f = (formal_entry *) xmalloc (sizeof (formal_entry));
- sb_new (&f->name);
- sb_new (&f->def);
- sb_new (&f->actual);
- f->next = NULL;
+ f = new_formal ();
c = -1;
for (pf = &m->formals; *pf != NULL; pf = &(*pf)->next)
f->index = c;
}
- sb_reset (&f->actual);
- idx = get_any_string (idx, in, &f->actual, 1, 0);
+ if (f->type != FORMAL_VARARG)
+ idx = get_any_string (idx, in, &f->actual);
+ else
+ {
+ sb_add_buffer (&f->actual, in->ptr + idx, in->len - idx);
+ idx = in->len;
+ }
if (f->actual.len > 0)
++narg;
do
}
}
- if (macro_mri)
+ if (! err)
{
- char buffer[20];
-
- sb_reset (&t);
- sb_add_string (&t, macro_strip_at ? "$NARG" : "NARG");
- ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t));
- sb_reset (&ptr->actual);
- sprintf (buffer, "%d", narg);
- sb_add_string (&ptr->actual, buffer);
- }
+ for (ptr = m->formals; ptr; ptr = ptr->next)
+ {
+ if (ptr->type == FORMAL_REQUIRED && ptr->actual.len == 0)
+ as_bad (_("Missing value for required parameter `%s' of macro `%s'"),
+ ptr->name.ptr,
+ m->name);
+ }
- err = macro_expand_body (&m->sub, out, m->formals, m->formal_hash,
- comment_char, 1);
- if (err != NULL)
- return err;
+ if (macro_mri)
+ {
+ char buffer[20];
+
+ sb_reset (&t);
+ sb_add_string (&t, macro_strip_at ? "$NARG" : "NARG");
+ ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t));
+ sprintf (buffer, "%d", narg);
+ sb_add_string (&ptr->actual, buffer);
+ }
+
+ err = macro_expand_body (&m->sub, out, m->formals, m->formal_hash, m);
+ }
/* Discard any unnamed formal arguments. */
if (macro_mri)
pf = &(*pf)->next;
else
{
- sb_kill (&(*pf)->name);
- sb_kill (&(*pf)->def);
- sb_kill (&(*pf)->actual);
f = (*pf)->next;
- free (*pf);
+ del_formal (*pf);
*pf = f;
}
}
}
sb_kill (&t);
- macro_number++;
+ if (!err)
+ macro_number++;
- return NULL;
+ return err;
}
/* Check for a macro. If one is found, put the expansion into
- *EXPAND. COMMENT_CHAR is the comment character--this is used by
- gasp. Return 1 if a macro is found, 0 otherwise. */
+ *EXPAND. Return 1 if a macro is found, 0 otherwise. */
int
-check_macro (line, expand, comment_char, error, info)
- const char *line;
- sb *expand;
- int comment_char;
- const char **error;
- macro_entry **info;
+check_macro (const char *line, sb *expand,
+ const char **error, macro_entry **info)
{
const char *s;
- char *copy, *cs;
+ char *copy, *cls;
macro_entry *macro;
sb line_sb;
- if (! isalpha ((unsigned char) *line)
- && *line != '_'
- && *line != '$'
+ if (! is_name_beginner (*line)
&& (! macro_mri || *line != '.'))
return 0;
s = line + 1;
- while (isalnum ((unsigned char) *s)
- || *s == '_'
- || *s == '$')
+ while (is_part_of_name (*s))
+ ++s;
+ if (is_name_ender (*s))
++s;
- copy = (char *) alloca (s - line + 1);
- memcpy (copy, line, s - line);
- copy[s - line] = '\0';
- for (cs = copy; *cs != '\0'; cs++)
- if (isupper ((unsigned char) *cs))
- *cs = tolower (*cs);
+ copy = xmemdup0 (line, s - line);
+ for (cls = copy; *cls != '\0'; cls ++)
+ *cls = TOLOWER (*cls);
macro = (macro_entry *) hash_find (macro_hash, copy);
+ free (copy);
if (macro == NULL)
return 0;
sb_add_char (&line_sb, *s++);
sb_new (expand);
- *error = macro_expand (0, &line_sb, macro, expand, comment_char);
+ *error = macro_expand (0, &line_sb, macro, expand);
sb_kill (&line_sb);
/* Delete a macro. */
void
-delete_macro (name)
- const char *name;
+delete_macro (const char *name)
{
- hash_delete (macro_hash, name);
+ char *copy;
+ size_t i, len;
+ macro_entry *macro;
+
+ len = strlen (name);
+ copy = XNEWVEC (char, len + 1);
+ for (i = 0; i < len; ++i)
+ copy[i] = TOLOWER (name[i]);
+ copy[i] = '\0';
+
+ /* We can only ask hash_delete to free memory if we are deleting
+ macros in reverse order to their definition.
+ So just clear out the entry. */
+ if ((macro = (macro_entry *) hash_find (macro_hash, copy)) != NULL)
+ {
+ hash_jam (macro_hash, copy, NULL);
+ free_macro (macro);
+ }
+ else
+ as_warn (_("Attempt to purge non-existing macro `%s'"), copy);
+ free (copy);
}
/* Handle the MRI IRP and IRPC pseudo-ops. These are handled as a
success, or an error message otherwise. */
const char *
-expand_irp (irpc, idx, in, out, get_line, comment_char)
- int irpc;
- int idx;
- sb *in;
- sb *out;
- int (*get_line) PARAMS ((sb *));
- int comment_char;
+expand_irp (int irpc, size_t idx, sb *in, sb *out, size_t (*get_line) (sb *))
{
- const char *mn;
sb sub;
formal_entry f;
struct hash_control *h;
const char *err;
- if (irpc)
- mn = "IRPC";
- else
- mn = "IRP";
-
idx = sb_skip_white (idx, in);
sb_new (&sub);
- if (! buffer_and_nest (mn, "ENDR", &sub, get_line))
+ if (! buffer_and_nest (NULL, "ENDR", &sub, get_line))
return _("unexpected end of file in irp or irpc");
sb_new (&f.name);
f.index = 1;
f.next = NULL;
+ f.type = FORMAL_OPTIONAL;
sb_reset (out);
idx = sb_skip_comma (idx, in);
- if (idx >= in->len || in->ptr[idx] == comment_char)
+ if (idx >= in->len)
{
/* Expand once with a null string. */
- err = macro_expand_body (&sub, out, &f, h, comment_char, 0);
- if (err != NULL)
- return err;
+ err = macro_expand_body (&sub, out, &f, h, 0);
}
else
{
+ bfd_boolean in_quotes = FALSE;
+
if (irpc && in->ptr[idx] == '"')
- ++idx;
- while (idx < in->len && in->ptr[idx] != comment_char)
+ {
+ in_quotes = TRUE;
+ ++idx;
+ }
+
+ while (idx < in->len)
{
if (!irpc)
- idx = get_any_string (idx, in, &f.actual, 1, 0);
+ idx = get_any_string (idx, in, &f.actual);
else
{
if (in->ptr[idx] == '"')
{
- int nxt;
+ size_t nxt;
+
+ if (irpc)
+ in_quotes = ! in_quotes;
nxt = sb_skip_white (idx + 1, in);
- if (nxt >= in->len || in->ptr[nxt] == comment_char)
+ if (nxt >= in->len)
{
idx = nxt;
break;
sb_add_char (&f.actual, in->ptr[idx]);
++idx;
}
- err = macro_expand_body (&sub, out, &f, h, comment_char, 0);
+
+ err = macro_expand_body (&sub, out, &f, h, 0);
if (err != NULL)
- return err;
+ break;
if (!irpc)
idx = sb_skip_comma (idx, in);
- else
+ else if (! in_quotes)
idx = sb_skip_white (idx, in);
}
}
hash_die (h);
+ sb_kill (&f.actual);
+ sb_kill (&f.def);
+ sb_kill (&f.name);
sb_kill (&sub);
- return NULL;
+ return err;
}
projects / deliverable / binutils-gdb.git / blobdiff