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);