1 /* vms-misc.c -- BFD back-end for VMS/VAX (openVMS/VAX) and
2 EVAX (openVMS/Alpha) files.
3 Copyright (C) 1996-2014 Free Software Foundation, Inc.
5 Miscellaneous functions.
7 Written by Klaus K"ampf (kkaempf@rmi.de)
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
32 #include "safe-ctype.h"
40 #define RME$C_SETRFM 0x00000001
49 /* Debug functions. */
51 /* Debug function for all vms extensions evaluates environment
52 variable VMS_DEBUG for a numerical value on the first call all
53 error levels below this value are printed:
56 1 toplevel bfd calls (functions from the bfd vector)
57 2 functions called by bfd calls
61 Level is also indentation level. Indentation is performed
65 _bfd_vms_debug (int level
, char *format
, ...)
67 static int min_level
= -1;
68 static FILE *output
= NULL
;
71 int abslvl
= (level
> 0) ? level
: - level
;
75 if ((eptr
= getenv ("VMS_DEBUG")) != NULL
)
77 min_level
= atoi (eptr
);
85 if (abslvl
> min_level
)
89 fprintf (output
, " ");
90 va_start (args
, format
);
91 vfprintf (output
, format
, args
);
97 hex dump 'size' bytes starting at 'ptr'. */
100 _bfd_hexdump (int level
, unsigned char *ptr
, int size
, int offset
)
102 unsigned char *lptr
= ptr
;
108 if ((count
% 16) == 0)
109 vms_debug (level
, "%08lx:", start
);
110 vms_debug (-level
, " %02x", *ptr
++);
115 while ((count
% 16) != 0)
117 vms_debug (-level
, " ");
121 if ((count
% 16) == 0)
123 vms_debug (-level
, " ");
126 vms_debug (-level
, "%c", (*lptr
< 32) ? '.' : *lptr
);
129 vms_debug (-level
, "\n");
132 if ((count
% 16) != 0)
133 vms_debug (-level
, "\n");
138 /* Copy sized string (string with fixed size) to new allocated area
139 size is string size (size of record) */
142 _bfd_vms_save_sized_string (unsigned char *str
, int size
)
144 char *newstr
= bfd_malloc ((bfd_size_type
) size
+ 1);
148 memcpy (newstr
, (char *) str
, (size_t) size
);
154 /* Copy counted string (string with size at first byte) to new allocated area
155 ptr points to size byte on entry */
158 _bfd_vms_save_counted_string (unsigned char *ptr
)
162 return _bfd_vms_save_sized_string (ptr
, len
);
165 /* Object output routines. */
168 Write 2 bytes rectype and 2 bytes record length. */
171 _bfd_vms_output_begin (struct vms_rec_wr
*recwr
, int rectype
)
173 vms_debug2 ((6, "_bfd_vms_output_begin (type %d)\n", rectype
));
175 /* Record must have been closed. */
176 BFD_ASSERT (recwr
->size
== 0);
178 _bfd_vms_output_short (recwr
, (unsigned int) rectype
);
180 /* Placeholder for length. */
181 _bfd_vms_output_short (recwr
, 0);
184 /* Begin new sub-record.
185 Write 2 bytes rectype, and 2 bytes record length. */
188 _bfd_vms_output_begin_subrec (struct vms_rec_wr
*recwr
, int rectype
)
190 vms_debug2 ((6, "_bfd_vms_output_begin_subrec (type %d)\n", rectype
));
192 /* Subrecord must have been closed. */
193 BFD_ASSERT (recwr
->subrec_offset
== 0);
195 /* Save start of subrecord offset. */
196 recwr
->subrec_offset
= recwr
->size
;
198 /* Subrecord type. */
199 _bfd_vms_output_short (recwr
, (unsigned int) rectype
);
201 /* Placeholder for length. */
202 _bfd_vms_output_short (recwr
, 0);
205 /* Set record/subrecord alignment. */
208 _bfd_vms_output_alignment (struct vms_rec_wr
*recwr
, int alignto
)
210 vms_debug2 ((6, "_bfd_vms_output_alignment (%d)\n", alignto
));
211 recwr
->align
= alignto
;
214 /* Align the size of the current record (whose length is LENGTH).
215 Warning: this obviously changes the record (and the possible subrecord)
219 _bfd_vms_output_align (struct vms_rec_wr
*recwr
, unsigned int length
)
221 unsigned int real_size
= recwr
->size
;
222 unsigned int aligncount
;
224 /* Pad with 0 if alignment is required. */
225 aligncount
= (recwr
->align
- (length
% recwr
->align
)) % recwr
->align
;
226 vms_debug2 ((6, "align: adding %d bytes\n", aligncount
));
227 while (aligncount
-- > 0)
228 recwr
->buf
[real_size
++] = 0;
230 recwr
->size
= real_size
;
233 /* Ends current sub-record. Set length field. */
236 _bfd_vms_output_end_subrec (struct vms_rec_wr
*recwr
)
238 int real_size
= recwr
->size
;
241 /* Subrecord must be open. */
242 BFD_ASSERT (recwr
->subrec_offset
!= 0);
244 length
= real_size
- recwr
->subrec_offset
;
249 _bfd_vms_output_align (recwr
, length
);
251 /* Put length to buffer. */
252 bfd_putl16 ((bfd_vma
) (recwr
->size
- recwr
->subrec_offset
),
253 recwr
->buf
+ recwr
->subrec_offset
+ 2);
255 /* Close the subrecord. */
256 recwr
->subrec_offset
= 0;
259 /* Ends current record (and write it). */
262 _bfd_vms_output_end (bfd
*abfd
, struct vms_rec_wr
*recwr
)
264 vms_debug2 ((6, "_bfd_vms_output_end (size %u)\n", recwr
->size
));
266 /* Subrecord must have been closed. */
267 BFD_ASSERT (recwr
->subrec_offset
== 0);
269 if (recwr
->size
== 0)
272 _bfd_vms_output_align (recwr
, recwr
->size
);
274 /* Write the length word. */
275 bfd_putl16 ((bfd_vma
) recwr
->size
, recwr
->buf
+ 2);
277 /* File is open in undefined (UDF) format on VMS, but ultimately will be
278 converted to variable length (VAR) format. VAR format has a length
279 word first which must be explicitly output in UDF format. */
280 /* So, first the length word. */
281 bfd_bwrite (recwr
->buf
+ 2, 2, abfd
);
285 recwr
->buf
[recwr
->size
++] = 0;
287 /* Then the record. */
288 bfd_bwrite (recwr
->buf
, (size_t) recwr
->size
, abfd
);
293 /* Check remaining buffer size. Return what's left. */
296 _bfd_vms_output_check (struct vms_rec_wr
*recwr
, int size
)
298 vms_debug2 ((6, "_bfd_vms_output_check (%d)\n", size
));
300 return (MAX_OUTREC_SIZE
- (recwr
->size
+ size
+ MIN_OUTREC_LUFT
));
303 /* Output byte (8 bit) value. */
306 _bfd_vms_output_byte (struct vms_rec_wr
*recwr
, unsigned int value
)
308 vms_debug2 ((6, "_bfd_vms_output_byte (%02x)\n", value
));
310 *(recwr
->buf
+ recwr
->size
) = value
;
314 /* Output short (16 bit) value. */
317 _bfd_vms_output_short (struct vms_rec_wr
*recwr
, unsigned int value
)
319 vms_debug2 ((6, "_bfd_vms_output_short (%04x)\n", value
));
321 bfd_putl16 ((bfd_vma
) value
& 0xffff, recwr
->buf
+ recwr
->size
);
325 /* Output long (32 bit) value. */
328 _bfd_vms_output_long (struct vms_rec_wr
*recwr
, unsigned long value
)
330 vms_debug2 ((6, "_bfd_vms_output_long (%08lx)\n", value
));
332 bfd_putl32 ((bfd_vma
) value
, recwr
->buf
+ recwr
->size
);
336 /* Output quad (64 bit) value. */
339 _bfd_vms_output_quad (struct vms_rec_wr
*recwr
, bfd_vma value
)
341 vms_debug2 ((6, "_bfd_vms_output_quad (%08lx)\n", (unsigned long)value
));
343 bfd_putl64 (value
, recwr
->buf
+ recwr
->size
);
347 /* Output c-string as counted string. */
350 _bfd_vms_output_counted (struct vms_rec_wr
*recwr
, const char *value
)
354 vms_debug2 ((6, "_bfd_vms_output_counted (%s)\n", value
));
356 len
= strlen (value
);
359 (*_bfd_error_handler
) (_("_bfd_vms_output_counted called with zero bytes"));
364 (*_bfd_error_handler
) (_("_bfd_vms_output_counted called with too many bytes"));
367 _bfd_vms_output_byte (recwr
, (unsigned int) len
& 0xff);
368 _bfd_vms_output_dump (recwr
, (const unsigned char *)value
, len
);
371 /* Output character area. */
374 _bfd_vms_output_dump (struct vms_rec_wr
*recwr
, const unsigned char *data
, int len
)
376 vms_debug2 ((6, "_bfd_vms_output_dump (%d)\n", len
));
381 memcpy (recwr
->buf
+ recwr
->size
, data
, (size_t) len
);
385 /* Output count bytes of value. */
388 _bfd_vms_output_fill (struct vms_rec_wr
*recwr
, int value
, int count
)
390 vms_debug2 ((6, "_bfd_vms_output_fill (val %02x times %d)\n", value
, count
));
394 memset (recwr
->buf
+ recwr
->size
, value
, (size_t) count
);
395 recwr
->size
+= count
;
399 /* Convert the file to variable record length format. This is done
400 using undocumented system call sys$modify().
404 vms_convert_to_var (char * vms_filename
)
406 struct FAB fab
= cc$rms_fab
;
408 fab
.fab$l_fna
= vms_filename
;
409 fab
.fab$b_fns
= strlen (vms_filename
);
410 fab
.fab$b_fac
= FAB$M_PUT
;
411 fab
.fab$l_fop
= FAB$M_ESC
;
412 fab
.fab$l_ctx
= RME$C_SETRFM
;
416 fab
.fab$b_rfm
= FAB$C_VAR
;
423 vms_convert_to_var_1 (char *filename
, int type
)
425 if (type
!= DECC$K_FILE
)
427 vms_convert_to_var (filename
);
431 /* Convert the file to variable record length format. This is done
432 using undocumented system call sys$modify().
433 Unix filename version. */
436 _bfd_vms_convert_to_var_unix_filename (const char *unix_filename
)
438 if (decc$
to_vms (unix_filename
, &vms_convert_to_var_1
, 0, 1) != 1)
444 /* Manufacture a VMS like time on a unix based system.
445 stolen from obj-vms.c. */
448 get_vms_time_string (void)
450 static unsigned char tbuf
[18];
456 pnt
= ctime (&timeb
);
462 sprintf ((char *) tbuf
, "%2s-%3s-%s %s",
463 pnt
+ 8, pnt
+ 4, pnt
+ 20, pnt
+ 11);
470 Descriptor
.Size
= 17;
471 Descriptor
.Ptr
= tbuf
;
472 SYS$
ASCTIM (0, &Descriptor
, 0, 0);
475 vms_debug2 ((6, "vmstimestring:'%s'\n", tbuf
));
480 /* Create module name from filename (ie, extract the basename and convert it
481 in upper cases). Works on both VMS and UNIX pathes.
482 The result has to be free(). */
485 vms_get_module_name (const char *filename
, bfd_boolean upcase
)
490 /* Strip VMS path. */
491 fout
= strrchr (filename
, ']');
493 fout
= strchr (filename
, ':');
499 /* Strip UNIX path. */
500 fptr
= strrchr (fout
, '/');
504 fname
= strdup (fout
);
507 fptr
= strrchr (fname
, '.');
511 /* Convert to upper case and truncate at 31 characters.
512 (VMS object file format restricts module name length to 31). */
514 for (fptr
= fname
; *fptr
!= 0; fptr
++)
516 if (*fptr
== ';' || (fptr
- fname
) >= 31)
522 *fptr
= TOUPPER (*fptr
);
527 /* Compared to usual UNIX time_t, VMS time has less limits:
528 - 64 bit (63 bits in fact as the MSB must be 0)
530 - epoch is Nov 17, 1858.
531 Here has the constants and the routines used to convert VMS from/to UNIX time.
532 The conversion routines don't assume 64 bits arithmetic.
534 Here we assume that the definition of time_t is the UNIX one, ie integer
535 type, expressing seconds since the epoch. */
537 /* UNIX time granularity for VMS, ie 1s / 100ns. */
538 #define VMS_TIME_FACTOR 10000000
540 /* Number of seconds since VMS epoch of the UNIX epoch. */
541 #define VMS_TIME_OFFSET 3506716800U
543 /* Convert a VMS time to a unix time. */
546 vms_time_to_time_t (unsigned int hi
, unsigned int lo
)
553 /* First convert to seconds. */
554 tmp
= hi
% VMS_TIME_FACTOR
;
555 hi
= hi
/ VMS_TIME_FACTOR
;
557 for (i
= 0; i
< 4; i
++)
559 tmp
= (tmp
<< 8) | (lo
>> 24);
562 rlo
= (rlo
<< 8) | (tmp
/ VMS_TIME_FACTOR
);
563 tmp
%= VMS_TIME_FACTOR
;
567 /* Return 0 in case of overflow. */
569 || (hi
== 1 && lo
>= VMS_TIME_OFFSET
))
572 /* Return 0 in case of underflow. */
573 if (hi
== 0 && lo
< VMS_TIME_OFFSET
)
576 res
= lo
- VMS_TIME_OFFSET
;
582 /* Convert a time_t to a VMS time. */
585 vms_time_t_to_vms_time (time_t ut
, unsigned int *hi
, unsigned int *lo
)
587 unsigned short val
[4];
588 unsigned short tmp
[4];
593 val
[0] = ut
& 0xffff;
594 val
[1] = (ut
>> 16) & 0xffff;
595 val
[2] = sizeof (ut
) > 4 ? (ut
>> 32) & 0xffff : 0;
596 val
[3] = sizeof (ut
) > 4 ? (ut
>> 48) & 0xffff : 0;
599 tmp
[0] = VMS_TIME_OFFSET
& 0xffff;
600 tmp
[1] = VMS_TIME_OFFSET
>> 16;
604 for (i
= 0; i
< 4; i
++)
606 carry
+= tmp
[i
] + val
[i
];
607 val
[i
] = carry
& 0xffff;
611 /* Multiply by factor, well first by 10000 and then by 1000. */
613 for (i
= 0; i
< 4; i
++)
615 carry
+= val
[i
] * 10000;
616 val
[i
] = carry
& 0xffff;
620 for (i
= 0; i
< 4; i
++)
622 carry
+= val
[i
] * 1000;
623 val
[i
] = carry
& 0xffff;
627 /* Write the result. */
628 *lo
= val
[0] | (val
[1] << 16);
629 *hi
= val
[2] | (val
[3] << 16);
632 /* Convert a raw (stored in a buffer) VMS time to a unix time. */
635 vms_rawtime_to_time_t (unsigned char *buf
)
637 unsigned int hi
= bfd_getl32 (buf
+ 4);
638 unsigned int lo
= bfd_getl32 (buf
+ 0);
640 return vms_time_to_time_t (hi
, lo
);
644 vms_get_time (unsigned int *hi
, unsigned int *lo
)
647 struct _generic_64 t
;
650 *lo
= t
.gen64$q_quadword
;
651 *hi
= t
.gen64$q_quadword
>> 32;
656 vms_time_t_to_vms_time (t
, hi
, lo
);
660 /* Get the current time into a raw buffer BUF. */
663 vms_raw_get_time (unsigned char *buf
)
667 vms_get_time (&hi
, &lo
);
668 bfd_putl32 (lo
, buf
+ 0);
669 bfd_putl32 (hi
, buf
+ 4);
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