1 /* vms-misc.c -- BFD back-end for VMS/VAX (openVMS/VAX) and
2 EVAX (openVMS/Alpha) files.
3 Copyright (C) 1996-2019 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, unsigned 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, unsigned int maxlen)
160 unsigned int len = *ptr++;
164 return _bfd_vms_save_sized_string (ptr, len);
167 /* Object output routines. */
170 Write 2 bytes rectype and 2 bytes record length. */
173 _bfd_vms_output_begin (struct vms_rec_wr *recwr, int rectype)
175 vms_debug2 ((6, "_bfd_vms_output_begin (type %d)\n", rectype));
177 /* Record must have been closed. */
178 BFD_ASSERT (recwr->size == 0);
180 _bfd_vms_output_short (recwr, (unsigned int) rectype);
182 /* Placeholder for length. */
183 _bfd_vms_output_short (recwr, 0);
186 /* Begin new sub-record.
187 Write 2 bytes rectype, and 2 bytes record length. */
190 _bfd_vms_output_begin_subrec (struct vms_rec_wr *recwr, int rectype)
192 vms_debug2 ((6, "_bfd_vms_output_begin_subrec (type %d)\n", rectype));
194 /* Subrecord must have been closed. */
195 BFD_ASSERT (recwr->subrec_offset == 0);
197 /* Save start of subrecord offset. */
198 recwr->subrec_offset = recwr->size;
200 /* Subrecord type. */
201 _bfd_vms_output_short (recwr, (unsigned int) rectype);
203 /* Placeholder for length. */
204 _bfd_vms_output_short (recwr, 0);
207 /* Set record/subrecord alignment. */
210 _bfd_vms_output_alignment (struct vms_rec_wr *recwr, int alignto)
212 vms_debug2 ((6, "_bfd_vms_output_alignment (%d)\n", alignto));
213 recwr->align = alignto;
216 /* Align the size of the current record (whose length is LENGTH).
217 Warning: this obviously changes the record (and the possible subrecord)
221 _bfd_vms_output_align (struct vms_rec_wr *recwr, unsigned int length)
223 unsigned int real_size = recwr->size;
224 unsigned int aligncount;
226 /* Pad with 0 if alignment is required. */
227 aligncount = (recwr->align - (length % recwr->align)) % recwr->align;
228 vms_debug2 ((6, "align: adding %d bytes\n", aligncount));
229 while (aligncount-- > 0)
230 recwr->buf[real_size++] = 0;
232 recwr->size = real_size;
235 /* Ends current sub-record. Set length field. */
238 _bfd_vms_output_end_subrec (struct vms_rec_wr *recwr)
240 int real_size = recwr->size;
243 /* Subrecord must be open. */
244 BFD_ASSERT (recwr->subrec_offset != 0);
246 length = real_size - recwr->subrec_offset;
251 _bfd_vms_output_align (recwr, length);
253 /* Put length to buffer. */
254 bfd_putl16 ((bfd_vma) (recwr->size - recwr->subrec_offset),
255 recwr->buf + recwr->subrec_offset + 2);
257 /* Close the subrecord. */
258 recwr->subrec_offset = 0;
261 /* Ends current record (and write it). */
264 _bfd_vms_output_end (bfd *abfd, struct vms_rec_wr *recwr)
266 vms_debug2 ((6, "_bfd_vms_output_end (size %u)\n", recwr->size));
268 /* Subrecord must have been closed. */
269 BFD_ASSERT (recwr->subrec_offset == 0);
271 if (recwr->size == 0)
274 _bfd_vms_output_align (recwr, recwr->size);
276 /* Write the length word. */
277 bfd_putl16 ((bfd_vma) recwr->size, recwr->buf + 2);
279 /* File is open in undefined (UDF) format on VMS, but ultimately will be
280 converted to variable length (VAR) format. VAR format has a length
281 word first which must be explicitly output in UDF format. */
282 /* So, first the length word. */
283 bfd_bwrite (recwr->buf + 2, 2, abfd);
287 recwr->buf[recwr->size++] = 0;
289 /* Then the record. */
290 bfd_bwrite (recwr->buf, (size_t) recwr->size, abfd);
295 /* Check remaining buffer size. Return what's left. */
298 _bfd_vms_output_check (struct vms_rec_wr *recwr, int size)
300 vms_debug2 ((6, "_bfd_vms_output_check (%d)\n", size));
302 return (MAX_OUTREC_SIZE - (recwr->size + size + MIN_OUTREC_LUFT));
305 /* Output byte (8 bit) value. */
308 _bfd_vms_output_byte (struct vms_rec_wr *recwr, unsigned int value)
310 vms_debug2 ((6, "_bfd_vms_output_byte (%02x)\n", value));
312 *(recwr->buf + recwr->size) = value;
316 /* Output short (16 bit) value. */
319 _bfd_vms_output_short (struct vms_rec_wr *recwr, unsigned int value)
321 vms_debug2 ((6, "_bfd_vms_output_short (%04x)\n", value));
323 bfd_putl16 ((bfd_vma) value & 0xffff, recwr->buf + recwr->size);
327 /* Output long (32 bit) value. */
330 _bfd_vms_output_long (struct vms_rec_wr *recwr, unsigned long value)
332 vms_debug2 ((6, "_bfd_vms_output_long (%08lx)\n", value));
334 bfd_putl32 ((bfd_vma) value, recwr->buf + recwr->size);
338 /* Output quad (64 bit) value. */
341 _bfd_vms_output_quad (struct vms_rec_wr *recwr, bfd_vma value)
343 vms_debug2 ((6, "_bfd_vms_output_quad (%08lx)\n", (unsigned long)value));
345 bfd_putl64 (value, recwr->buf + recwr->size);
349 /* Output c-string as counted string. */
352 _bfd_vms_output_counted (struct vms_rec_wr *recwr, const char *value)
356 vms_debug2 ((6, "_bfd_vms_output_counted (%s)\n", value));
358 len = strlen (value);
361 _bfd_error_handler (_("_bfd_vms_output_counted called with zero bytes"));
366 _bfd_error_handler (_("_bfd_vms_output_counted called with too many bytes"));
369 _bfd_vms_output_byte (recwr, (unsigned int) len & 0xff);
370 _bfd_vms_output_dump (recwr, (const unsigned char *)value, len);
373 /* Output character area. */
376 _bfd_vms_output_dump (struct vms_rec_wr *recwr, const unsigned char *data, int len)
378 vms_debug2 ((6, "_bfd_vms_output_dump (%d)\n", len));
383 memcpy (recwr->buf + recwr->size, data, (size_t) len);
387 /* Output count bytes of value. */
390 _bfd_vms_output_fill (struct vms_rec_wr *recwr, int value, int count)
392 vms_debug2 ((6, "_bfd_vms_output_fill (val %02x times %d)\n", value, count));
396 memset (recwr->buf + recwr->size, value, (size_t) count);
397 recwr->size += count;
401 /* Convert the file to variable record length format. This is done
402 using undocumented system call sys$modify().
406 vms_convert_to_var (char * vms_filename)
408 struct FAB fab = cc$rms_fab;
410 fab.fab$l_fna = vms_filename;
411 fab.fab$b_fns = strlen (vms_filename);
412 fab.fab$b_fac = FAB$M_PUT;
413 fab.fab$l_fop = FAB$M_ESC;
414 fab.fab$l_ctx = RME$C_SETRFM;
418 fab.fab$b_rfm = FAB$C_VAR;
425 vms_convert_to_var_1 (char *filename, int type)
427 if (type != DECC$K_FILE)
429 vms_convert_to_var (filename);
433 /* Convert the file to variable record length format. This is done
434 using undocumented system call sys$modify().
435 Unix filename version. */
438 _bfd_vms_convert_to_var_unix_filename (const char *unix_filename)
440 if (decc$to_vms (unix_filename, &vms_convert_to_var_1, 0, 1) != 1)
446 /* Manufacture a VMS like time on a unix based system.
447 stolen from obj-vms.c. */
450 get_vms_time_string (void)
452 static unsigned char tbuf[18];
458 pnt = ctime (&timeb);
464 sprintf ((char *) tbuf, "%2s-%3s-%s %s",
465 pnt + 8, pnt + 4, pnt + 20, pnt + 11);
472 Descriptor.Size = 17;
473 Descriptor.Ptr = tbuf;
474 SYS$ASCTIM (0, &Descriptor, 0, 0);
477 vms_debug2 ((6, "vmstimestring:'%s'\n", tbuf));
482 /* Create module name from filename (ie, extract the basename and convert it
483 in upper cases). Works on both VMS and UNIX pathes.
484 The result has to be free(). */
487 vms_get_module_name (const char *filename, bfd_boolean upcase)
492 /* Strip VMS path. */
493 fout = strrchr (filename, ']');
495 fout = strchr (filename, ':');
501 /* Strip UNIX path. */
502 fptr = strrchr (fout, '/');
506 fname = strdup (fout);
509 fptr = strrchr (fname, '.');
513 /* Convert to upper case and truncate at 31 characters.
514 (VMS object file format restricts module name length to 31). */
516 for (fptr = fname; *fptr != 0; fptr++)
518 if (*fptr == ';' || (fptr - fname) >= 31)
524 *fptr = TOUPPER (*fptr);
529 /* Compared to usual UNIX time_t, VMS time has less limits:
530 - 64 bit (63 bits in fact as the MSB must be 0)
532 - epoch is Nov 17, 1858.
533 Here has the constants and the routines used to convert VMS from/to UNIX time.
534 The conversion routines don't assume 64 bits arithmetic.
536 Here we assume that the definition of time_t is the UNIX one, ie integer
537 type, expressing seconds since the epoch. */
539 /* UNIX time granularity for VMS, ie 1s / 100ns. */
540 #define VMS_TIME_FACTOR 10000000
542 /* Number of seconds since VMS epoch of the UNIX epoch. */
543 #define VMS_TIME_OFFSET 3506716800U
545 /* Convert a VMS time to a unix time. */
548 vms_time_to_time_t (unsigned int hi, unsigned int lo)
555 /* First convert to seconds. */
556 tmp = hi % VMS_TIME_FACTOR;
557 hi = hi / VMS_TIME_FACTOR;
559 for (i = 0; i < 4; i++)
561 tmp = (tmp << 8) | (lo >> 24);
564 rlo = (rlo << 8) | (tmp / VMS_TIME_FACTOR);
565 tmp %= VMS_TIME_FACTOR;
569 /* Return 0 in case of overflow. */
571 || (hi == 1 && lo >= VMS_TIME_OFFSET))
574 /* Return 0 in case of underflow. */
575 if (hi == 0 && lo < VMS_TIME_OFFSET)
578 res = lo - VMS_TIME_OFFSET;
584 /* Convert a time_t to a VMS time. */
587 vms_time_t_to_vms_time (time_t ut, unsigned int *hi, unsigned int *lo)
589 unsigned short val[4];
590 unsigned short tmp[4];
595 val[0] = ut & 0xffff;
596 val[1] = (ut >> 16) & 0xffff;
597 val[2] = sizeof (ut) > 4 ? (ut >> 32) & 0xffff : 0;
598 val[3] = sizeof (ut) > 4 ? (ut >> 48) & 0xffff : 0;
601 tmp[0] = VMS_TIME_OFFSET & 0xffff;
602 tmp[1] = VMS_TIME_OFFSET >> 16;
606 for (i = 0; i < 4; i++)
608 carry += tmp[i] + val[i];
609 val[i] = carry & 0xffff;
613 /* Multiply by factor, well first by 10000 and then by 1000. */
615 for (i = 0; i < 4; i++)
617 carry += val[i] * 10000;
618 val[i] = carry & 0xffff;
622 for (i = 0; i < 4; i++)
624 carry += val[i] * 1000;
625 val[i] = carry & 0xffff;
629 /* Write the result. */
630 *lo = val[0] | (val[1] << 16);
631 *hi = val[2] | (val[3] << 16);
634 /* Convert a raw (stored in a buffer) VMS time to a unix time. */
637 vms_rawtime_to_time_t (unsigned char *buf)
639 unsigned int hi = bfd_getl32 (buf + 4);
640 unsigned int lo = bfd_getl32 (buf + 0);
642 return vms_time_to_time_t (hi, lo);
646 vms_get_time (unsigned int *hi, unsigned int *lo)
649 struct _generic_64 t;
652 *lo = t.gen64$q_quadword;
653 *hi = t.gen64$q_quadword >> 32;
658 vms_time_t_to_vms_time (t, hi, lo);
662 /* Get the current time into a raw buffer BUF. */
665 vms_raw_get_time (unsigned char *buf)
669 vms_get_time (&hi, &lo);
670 bfd_putl32 (lo, buf + 0);
671 bfd_putl32 (hi, buf + 4);