/* input_scrub.c - Break up input buffers into whole numbers of lines.
- Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 97, 2000
+ Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 2000
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
* were broken across buffers, and return a buffer of full lines to
* the caller.
* The last partial line begins the next buffer we build and return to caller.
- * The buffer returned to caller is preceeded by BEFORE_STRING and followed
+ * The buffer returned to caller is preceded by BEFORE_STRING and followed
* by AFTER_STRING, as sentinels. The last character before AFTER_STRING
* is a newline.
* Also looks after line numbers, for e.g. error messages.
static char *buffer_start; /*->1st char of full buffer area. */
static char *partial_where; /*->after last full line in buffer. */
static int partial_size; /* >=0. Number of chars in partial line in buffer. */
+
+/* Because we need AFTER_STRING just after last full line, it clobbers
+ 1st part of partial line. So we preserve 1st part of partial line
+ here. */
static char save_source[AFTER_SIZE];
-/* Because we need AFTER_STRING just after last */
-/* full line, it clobbers 1st part of partial */
-/* line. So we preserve 1st part of partial */
-/* line here. */
-static unsigned int buffer_length; /* What is the largest size buffer that */
-/* input_file_give_next_buffer() could */
-/* return to us? */
+
+/* What is the largest size buffer that input_file_give_next_buffer()
+ could return to us? */
+static unsigned int buffer_length;
/* The index into an sb structure we are reading from. -1 if none. */
static int sb_index = -1;
static int logical_input_line;
/* Struct used to save the state of the input handler during include files */
-struct input_save
- {
- char *buffer_start;
- char *partial_where;
- int partial_size;
- char save_source[AFTER_SIZE];
- unsigned int buffer_length;
- char *physical_input_file;
- char *logical_input_file;
- line_numberT physical_input_line;
- int logical_input_line;
- int sb_index;
- sb from_sb;
- int from_sb_is_expansion; /* Should we do a conditional check? */
- struct input_save *next_saved_file; /* Chain of input_saves */
- char *input_file_save; /* Saved state of input routines */
- char *saved_position; /* Caller's saved position in buf */
- };
-
-static struct input_save *input_scrub_push PARAMS ((char *saved_position));
-static char *input_scrub_pop PARAMS ((struct input_save *arg));
-static void as_1_char PARAMS ((unsigned int c, FILE * stream));
+struct input_save {
+ char * buffer_start;
+ char * partial_where;
+ int partial_size;
+ char save_source[AFTER_SIZE];
+ unsigned int buffer_length;
+ char * physical_input_file;
+ char * logical_input_file;
+ line_numberT physical_input_line;
+ int logical_input_line;
+ int sb_index;
+ sb from_sb;
+ int from_sb_is_expansion; /* Should we do a conditional check? */
+ struct input_save * next_saved_file; /* Chain of input_saves. */
+ char * input_file_save; /* Saved state of input routines. */
+ char * saved_position; /* Caller's saved position in buf. */
+};
+
+static struct input_save *input_scrub_push (char *saved_position);
+static char *input_scrub_pop (struct input_save *arg);
+static void as_1_char (unsigned int c, FILE * stream);
/* Saved information about the file that .include'd this one. When we hit EOF,
we automatically pop to that file. */
/* Push the state of input reading and scrubbing so that we can #include.
The return value is a 'void *' (fudged for old compilers) to a save
area, which can be restored by passing it to input_scrub_pop(). */
+
static struct input_save *
-input_scrub_push (saved_position)
- char *saved_position;
+input_scrub_push (char *saved_position)
{
register struct input_save *saved;
memcpy (buffer_start, BEFORE_STRING, (int) BEFORE_SIZE);
return saved;
-} /* input_scrub_push() */
+}
static char *
-input_scrub_pop (saved)
- struct input_save *saved;
+input_scrub_pop (struct input_save *saved)
{
char *saved_position;
return saved_position;
}
\f
-
void
-input_scrub_begin ()
+input_scrub_begin (void)
{
know (strlen (BEFORE_STRING) == BEFORE_SIZE);
- know (strlen (AFTER_STRING) == AFTER_SIZE || (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1));
+ know (strlen (AFTER_STRING) == AFTER_SIZE
+ || (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1));
input_file_begin ();
}
void
-input_scrub_end ()
+input_scrub_end (void)
{
if (buffer_start)
{
}
}
-/* Start reading input from a new file. */
+/* Start reading input from a new file.
+ Return start of caller's part of buffer. */
-char * /* Return start of caller's part of buffer. */
-input_scrub_new_file (filename)
- char *filename;
+char *
+input_scrub_new_file (char *filename)
{
input_file_open (filename, !flag_no_comments);
physical_input_file = filename[0] ? filename : _("{standard input}");
input_scrub_new_file. */
char *
-input_scrub_include_file (filename, position)
- char *filename;
- char *position;
+input_scrub_include_file (char *filename, char *position)
{
next_saved_file = input_scrub_push (position);
return input_scrub_new_file (filename);
expanding a macro. */
void
-input_scrub_include_sb (from, position, is_expansion)
- sb *from;
- char *position;
- int is_expansion;
+input_scrub_include_sb (sb *from, char *position, int is_expansion)
{
if (macro_nest > max_macro_nest)
as_fatal (_("macros nested too deeply"));
}
void
-input_scrub_close ()
+input_scrub_close (void)
{
input_file_close ();
}
char *
-input_scrub_next_buffer (bufp)
- char **bufp;
+input_scrub_next_buffer (char **bufp)
{
register char *limit; /*->just after last char of buffer. */
if (sb_index >= from_sb.len)
{
sb_kill (&from_sb);
- if (from_sb_is_expansion
+ if (from_sb_is_expansion
)
- {
- cond_finish_check (macro_nest);
+ {
+ cond_finish_check (macro_nest);
#ifdef md_macro_end
- /* allow the target to clean up per-macro expansion data */
- md_macro_end ();
+ /* Allow the target to clean up per-macro expansion
+ data. */
+ md_macro_end ();
#endif
- }
- --macro_nest;
+ }
+ --macro_nest;
partial_where = NULL;
if (next_saved_file != NULL)
*bufp = input_scrub_pop (next_saved_file);
partial_where = 0;
if (partial_size > 0)
{
- as_warn (_("Partial line at end of file ignored"));
+ as_warn (_("partial line at end of file ignored"));
}
/* Tell the listing we've finished the file. */
}
}
return (partial_where);
-} /* input_scrub_next_buffer() */
+}
\f
-/*
- * The remaining part of this file deals with line numbers, error
- * messages and so on.
- */
+/* The remaining part of this file deals with line numbers, error
+ messages and so on. Return TRUE if we opened any file. */
int
-seen_at_least_1_file () /* TRUE if we opened any file. */
+seen_at_least_1_file (void)
{
return (physical_input_file != NULL);
}
void
-bump_line_counters ()
+bump_line_counters (void)
{
if (sb_index < 0)
{
}
}
\f
-/*
- * new_logical_line()
- *
- * Tells us what the new logical line number and file are.
- * If the line_number is -1, we don't change the current logical line
- * number. If it is -2, we decrement the logical line number (this is
- * to support the .appfile pseudo-op inserted into the stream by
- * do_scrub_chars).
- * If the fname is NULL, we don't change the current logical file name.
- * Returns nonzero if the filename actually changes.
- */
+/* Tells us what the new logical line number and file are.
+ If the line_number is -1, we don't change the current logical line
+ number. If it is -2, we decrement the logical line number (this is
+ to support the .appfile pseudo-op inserted into the stream by
+ do_scrub_chars).
+ If the fname is NULL, we don't change the current logical file name.
+ Returns nonzero if the filename actually changes. */
+
int
-new_logical_line (fname, line_number)
- char *fname; /* DON'T destroy it! We point to it! */
- int line_number;
+new_logical_line (char *fname, /* DON'T destroy it! We point to it! */
+ int line_number)
{
if (line_number >= 0)
logical_input_line = line_number;
}
else
return 0;
-} /* new_logical_line() */
+}
\f
-/*
- * a s _ w h e r e ()
- *
- * Return the current file name and line number.
- * namep should be char * const *, but there are compilers which screw
- * up declarations like that, and it's easier to avoid it.
- */
+/* Return the current file name and line number.
+ namep should be char * const *, but there are compilers which screw
+ up declarations like that, and it's easier to avoid it. */
+
void
-as_where (namep, linep)
- char **namep;
- unsigned int *linep;
+as_where (char **namep, unsigned int *linep)
{
if (logical_input_file != NULL
&& (linep == NULL || logical_input_line >= 0))
if (linep != NULL)
*linep = 0;
}
-} /* as_where() */
+}
\f
+/* Output to given stream how much of line we have scanned so far.
+ Assumes we have scanned up to and including input_line_pointer.
+ No free '\n' at end of line. */
-/*
- * a s _ h o w m u c h ()
- *
- * Output to given stream how much of line we have scanned so far.
- * Assumes we have scanned up to and including input_line_pointer.
- * No free '\n' at end of line.
- */
void
-as_howmuch (stream)
- FILE *stream; /* Opened for write please. */
+as_howmuch (FILE *stream /* Opened for write please. */)
{
register char *p; /* Scan input line. */
- /* register char c; JF unused */
for (p = input_line_pointer - 1; *p != '\n'; --p)
{
}
static void
-as_1_char (c, stream)
- unsigned int c;
- FILE *stream;
+as_1_char (unsigned int c, FILE *stream)
{
if (c > 127)
{
}
(void) putc (c, stream);
}
-
-/* end of input_scrub.c */
projects / binutils-gdb.git / blobdiff