/* 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.
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 */
- };
+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));
/* 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;
memcpy (buffer_start, BEFORE_STRING, (int) BEFORE_SIZE);
return saved;
-} /* input_scrub_push() */
+}
static char *
input_scrub_pop (saved)
return saved_position;
}
\f
-
void
input_scrub_begin ()
{
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 ();
}
}
-/* 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. */
+char *
input_scrub_new_file (filename)
char *filename;
{
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 ()
{
return (physical_input_file != NULL);
}
}
}
\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! */
+ char *fname; /* DON'T destroy it! We point to it! */
int line_number;
{
if (line_number >= 0)
}
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;
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. */
{
register char *p; /* Scan input line. */
- /* register char c; JF unused */
for (p = input_line_pointer - 1; *p != '\n'; --p)
{
}
(void) putc (c, stream);
}
-
-/* end of input_scrub.c */
projects / deliverable / binutils-gdb.git / blobdiff