Power10 VSX load/store rightmost element operations

[deliverable/binutils-gdb.git] / gas / input-file.c

diff --git a/gas/input-file.c b/gas/input-file.c
index 634f6f73930e386854fe8ebeb4f846ff05e73032..5c4bb3109f954029cbdb98128ccc2cb3bfda926e 100644 (file)
--- a/gas/input-file.c
+++ b/gas/input-file.c
@@ -1,12 +1,11 @@
 /* input_file.c - Deal with Input Files -
 /* input_file.c - Deal with Input Files -

-   Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 98, 1999
-   Free Software Foundation, Inc.
+   Copyright (C) 1987-2020 Free Software Foundation, Inc.

 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
 
    This file is part of GAS, the GNU Assembler.
 
    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,
    any later version.
 
    GAS is distributed in the hope that it will be useful,


@@ -16,89 +15,73 @@
 
    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
 
    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.  */
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */

 
 

-/*
- * Confines all details of reading source bytes to this module.
- * All O/S specific crocks should live here.
- * What we lose in "efficiency" we gain in modularity.
- * Note we don't need to #include the "as.h" file. No common coupling!
- */
-
-#include <stdio.h>
-#include <string.h>
+/* Confines all details of reading source bytes to this module.
+   All O/S specific crocks should live here.
+   What we lose in "efficiency" we gain in modularity.
+   Note we don't need to #include the "as.h" file. No common coupling!  */

 
 #include "as.h"
 #include "input-file.h"
 
 #include "as.h"
 #include "input-file.h"

-
-static int input_file_get PARAMS ((char *, int));
+#include "safe-ctype.h"

 
 /* This variable is non-zero if the file currently being read should be
 
 /* This variable is non-zero if the file currently being read should be

-   preprocessed by app.  It is zero if the file can be read straight in.
-   */
+   preprocessed by app.  It is zero if the file can be read straight in.  */

 int preprocess = 0;
 
 int preprocess = 0;
 

-/*
- * This code opens a file, then delivers BUFFER_SIZE character
- * chunks of the file on demand.
- * BUFFER_SIZE is supposed to be a number chosen for speed.
- * The caller only asks once what BUFFER_SIZE is, and asks before
- * the nature of the input files (if any) is known.
- */
+/* This code opens a file, then delivers BUFFER_SIZE character
+   chunks of the file on demand.
+   BUFFER_SIZE is supposed to be a number chosen for speed.
+   The caller only asks once what BUFFER_SIZE is, and asks before
+   the nature of the input files (if any) is known.  */

 
 #define BUFFER_SIZE (32 * 1024)
 
 
 #define BUFFER_SIZE (32 * 1024)
 

-/*
- * We use static data: the data area is not sharable.
- */
+/* We use static data: the data area is not sharable.  */

 
 static FILE *f_in;
 
 static FILE *f_in;

-static char *file_name;
+static const char *file_name;

 
 /* Struct for saving the state of this module for file includes.  */
 struct saved_file
   {
 
 /* Struct for saving the state of this module for file includes.  */
 struct saved_file
   {

-    FILE *f_in;
-    char *file_name;
-    int preprocess;
-    char *app_save;
+    FILE * f_in;
+    const char * file_name;
+    int    preprocess;
+    char * app_save;

   };
 \f
   };
 \f

-/* These hooks accomodate most operating systems. */
+/* These hooks accommodate most operating systems.  */

 
 

-void 
-input_file_begin ()
+void
+input_file_begin (void)

 {
   f_in = (FILE *) 0;
 }
 
 {
   f_in = (FILE *) 0;
 }
 

-void 
-input_file_end ()
+void
+input_file_end (void)

 {
 }
 
 {
 }
 

-/* Return BUFFER_SIZE. */
-unsigned int 
-input_file_buffer_size ()
+/* Return BUFFER_SIZE.  */
+size_t
+input_file_buffer_size (void)

 {
   return (BUFFER_SIZE);
 }
 
 {
   return (BUFFER_SIZE);
 }
 

-int 
-input_file_is_open ()
-{
-  return f_in != (FILE *) 0;
-}
-

 /* Push the state of our input, returning a pointer to saved info that
    can be restored with input_file_pop ().  */
 /* Push the state of our input, returning a pointer to saved info that
    can be restored with input_file_pop ().  */

+

 char *
 char *

-input_file_push ()
+input_file_push (void)

 {
 {

-  register struct saved_file *saved;
+  struct saved_file *saved;

 
 

-  saved = (struct saved_file *) xmalloc (sizeof *saved);
+  saved = XNEW (struct saved_file);

 
   saved->f_in = f_in;
   saved->file_name = file_name;
 
   saved->f_in = f_in;
   saved->file_name = file_name;


@@ -106,18 +89,18 @@ input_file_push ()
   if (preprocess)
     saved->app_save = app_push ();
 
   if (preprocess)
     saved->app_save = app_push ();
 

-  input_file_begin ();         /* Initialize for new file */
+  /* Initialize for new file.  */
+  input_file_begin ();

 
   return (char *) saved;
 }
 
 void
 
   return (char *) saved;
 }
 
 void

-input_file_pop (arg)
-     char *arg;
+input_file_pop (char *arg)

 {
 {

-  register struct saved_file *saved = (struct saved_file *) arg;
+  struct saved_file *saved = (struct saved_file *) arg;

 
 

-  input_file_end ();           /* Close out old file */
+  input_file_end ();           /* Close out old file.  */

 
   f_in = saved->f_in;
   file_name = saved->file_name;
 
   f_in = saved->f_in;
   file_name = saved->file_name;


@@ -128,45 +111,80 @@ input_file_pop (arg)
   free (arg);
 }
 \f
   free (arg);
 }
 \f

+/* Open the specified file, "" means stdin.  Filename must not be null.  */
+

 void
 void

-input_file_open (filename, pre)
-     char *filename;           /* "" means use stdin. Must not be 0. */
-     int pre;
+input_file_open (const char *filename,
+                int pre)

 {
   int c;
   char buf[80];
 
   preprocess = pre;
 
 {
   int c;
   char buf[80];
 
   preprocess = pre;
 

-  assert (filename != 0);      /* Filename may not be NULL. */
+  gas_assert (filename != 0);  /* Filename may not be NULL.  */

   if (filename[0])
   if (filename[0])

-    {                          /* We have a file name. Suck it and see. */
-      f_in = fopen (filename, "r");
+    {
+      f_in = fopen (filename, FOPEN_RT);

       file_name = filename;
     }
   else
       file_name = filename;
     }
   else

-    {                          /* use stdin for the input file. */
+    {
+      /* Use stdin for the input file.  */

       f_in = stdin;
       f_in = stdin;

-      file_name = _("{standard input}");       /* For error messages. */
+      /* For error messages.  */
+      file_name = _("{standard input}");

     }
     }

-  if (f_in == (FILE *) 0)
+
+  if (f_in == NULL)

     {
     {

-      as_bad (_("Can't open %s for reading."), file_name);
-      as_perror ("%s", file_name);
+      as_bad (_("can't open %s for reading: %s"),
+             file_name, xstrerror (errno));

       return;
     }
 
   c = getc (f_in);
       return;
     }
 
   c = getc (f_in);

+
+  if (ferror (f_in))
+    {
+      as_bad (_("can't read from %s: %s"),
+             file_name, xstrerror (errno));
+
+      fclose (f_in);
+      f_in = NULL;
+      return;
+    }
+
+  /* Check for an empty input file.  */
+  if (feof (f_in))
+    {
+      fclose (f_in);
+      f_in = NULL;
+      return;
+    }
+  gas_assert (c != EOF);
+

   if (c == '#')
   if (c == '#')

-    {                          /* Begins with comment, may not want to preprocess */
+    {
+      /* Begins with comment, may not want to preprocess.  */

       c = getc (f_in);
       if (c == 'N')
        {
       c = getc (f_in);
       if (c == 'N')
        {

-         fgets (buf, 80, f_in);
-         if (!strcmp (buf, "O_APP\n"))
+         if (fgets (buf, sizeof (buf), f_in)
+             && !strncmp (buf, "O_APP", 5) && ISSPACE (buf[5]))

            preprocess = 0;
          if (!strchr (buf, '\n'))
            preprocess = 0;
          if (!strchr (buf, '\n'))

-           ungetc ('#', f_in); /* It was longer */
+           ungetc ('#', f_in); /* It was longer.  */
+         else
+           ungetc ('\n', f_in);
+       }
+      else if (c == 'A')
+       {
+         if (fgets (buf, sizeof (buf), f_in)
+             && !strncmp (buf, "PP", 2) && ISSPACE (buf[2]))
+           preprocess = 1;
+         if (!strchr (buf, '\n'))
+           ungetc ('#', f_in);

          else
            ungetc ('\n', f_in);
        }
          else
            ungetc ('\n', f_in);
        }


@@ -180,70 +198,62 @@ input_file_open (filename, pre)
 }
 
 /* Close input file.  */
 }
 
 /* Close input file.  */

-void 
-input_file_close ()
+
+void
+input_file_close (void)

 {
 {

+  /* Don't close a null file pointer.  */

   if (f_in != NULL)
   if (f_in != NULL)

-    {
-      fclose (f_in);
-    }                          /* don't close a null file pointer */
+    fclose (f_in);
+

   f_in = 0;
   f_in = 0;

-}                              /* input_file_close() */
+}

 
 /* This function is passed to do_scrub_chars.  */
 
 
 /* This function is passed to do_scrub_chars.  */
 

-static int
-input_file_get (buf, buflen)
-     char *buf;
-     int buflen;
+static size_t
+input_file_get (char *buf, size_t buflen)

 {
 {

-  int size;
+  size_t size;
+
+  if (feof (f_in))
+    return 0;

 
   size = fread (buf, sizeof (char), buflen, f_in);
 
   size = fread (buf, sizeof (char), buflen, f_in);

-  if (size < 0)
-    {
-      as_perror (_("Can't read from %s"), file_name);
-      size = 0;
-    }
+  if (ferror (f_in))
+    as_bad (_("can't read from %s: %s"), file_name, xstrerror (errno));

   return size;
 }
 
 /* Read a buffer from the input file.  */
 
 char *
   return size;
 }
 
 /* Read a buffer from the input file.  */
 
 char *

-input_file_give_next_buffer (where)
-     char *where;              /* Where to place 1st character of new buffer. */
+input_file_give_next_buffer (char *where /* Where to place 1st character of new buffer.  */)

 {
 {

-  char *return_value;          /* -> Last char of what we read, + 1. */
-  register int size;
+  char *return_value;          /* -> Last char of what we read, + 1.  */
+  size_t size;

 
   if (f_in == (FILE *) 0)
     return 0;
 
   if (f_in == (FILE *) 0)
     return 0;

-  /*
-   * fflush (stdin); could be done here if you want to synchronise
-   * stdin and stdout, for the case where our input file is stdin.
-   * Since the assembler shouldn't do any output to stdout, we
-   * don't bother to synch output and input.
-   */
+  /* fflush (stdin); could be done here if you want to synchronise
+     stdin and stdout, for the case where our input file is stdin.
+     Since the assembler shouldn't do any output to stdout, we
+     don't bother to synch output and input.  */

   if (preprocess)
     size = do_scrub_chars (input_file_get, where, BUFFER_SIZE);
   else
   if (preprocess)
     size = do_scrub_chars (input_file_get, where, BUFFER_SIZE);
   else

-    size = fread (where, sizeof (char), BUFFER_SIZE, f_in);
-  if (size < 0)
-    {
-      as_perror (_("Can't read from %s"), file_name);
-      size = 0;
-    }
+    size = input_file_get (where, BUFFER_SIZE);
+

   if (size)
     return_value = where + size;
   else
     {
       if (fclose (f_in))
   if (size)
     return_value = where + size;
   else
     {
       if (fclose (f_in))

-       as_perror (_("Can't close %s"), file_name);
+       as_warn (_("can't close %s: %s"), file_name, xstrerror (errno));
+

       f_in = (FILE *) 0;
       return_value = 0;
     }
       f_in = (FILE *) 0;
       return_value = 0;
     }

-  return (return_value);
-}

 
 

-/* end of input-file.c */
+  return return_value;
+}