| /* vms-misc.c -- BFD back-end for VMS/VAX (openVMS/VAX) and |
| EVAX (openVMS/Alpha) files. |
| Copyright (C) 1996-2021 Free Software Foundation, Inc. |
| |
| Miscellaneous functions. |
| |
| Written by Klaus K"ampf (kkaempf@rmi.de) |
| |
| This program 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 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #if __STDC__ |
| #include <stdarg.h> |
| #endif |
| |
| #include "sysdep.h" |
| #include "bfd.h" |
| #include "bfdlink.h" |
| #include "libbfd.h" |
| #include "safe-ctype.h" |
| |
| #ifdef VMS |
| #define __NEW_STARLET |
| #include <rms.h> |
| #include <unixlib.h> |
| #include <gen64def.h> |
| #include <starlet.h> |
| #define RME$C_SETRFM 0x00000001 |
| #include <unistd.h> |
| #endif |
| #include <time.h> |
| |
| #include "vms.h" |
| #include "vms/emh.h" |
| |
| #if VMS_DEBUG |
| /* Debug functions. */ |
| |
| /* Debug function for all vms extensions evaluates environment |
| variable VMS_DEBUG for a numerical value on the first call all |
| error levels below this value are printed: |
| |
| Levels: |
| 1 toplevel bfd calls (functions from the bfd vector) |
| 2 functions called by bfd calls |
| ... |
| 9 almost everything |
| |
| Level is also indentation level. Indentation is performed |
| if level > 0. */ |
| |
| void |
| _bfd_vms_debug (int level, char *format, ...) |
| { |
| static int min_level = -1; |
| static FILE *output = NULL; |
| char *eptr; |
| va_list args; |
| int abslvl = (level > 0) ? level : - level; |
| |
| if (min_level == -1) |
| { |
| if ((eptr = getenv ("VMS_DEBUG")) != NULL) |
| { |
| min_level = atoi (eptr); |
| output = stderr; |
| } |
| else |
| min_level = 0; |
| } |
| if (output == NULL) |
| return; |
| if (abslvl > min_level) |
| return; |
| |
| while (--level > 0) |
| fprintf (output, " "); |
| va_start (args, format); |
| vfprintf (output, format, args); |
| fflush (output); |
| va_end (args); |
| } |
| |
| /* A debug function |
| hex dump 'size' bytes starting at 'ptr'. */ |
| |
| void |
| _bfd_hexdump (int level, unsigned char *ptr, int size, int offset) |
| { |
| unsigned char *lptr = ptr; |
| int count = 0; |
| long start = offset; |
| |
| while (size-- > 0) |
| { |
| if ((count % 16) == 0) |
| vms_debug (level, "%08lx:", start); |
| vms_debug (-level, " %02x", *ptr++); |
| count++; |
| start++; |
| if (size == 0) |
| { |
| while ((count % 16) != 0) |
| { |
| vms_debug (-level, " "); |
| count++; |
| } |
| } |
| if ((count % 16) == 0) |
| { |
| vms_debug (-level, " "); |
| while (lptr < ptr) |
| { |
| vms_debug (-level, "%c", (*lptr < 32) ? '.' : *lptr); |
| lptr++; |
| } |
| vms_debug (-level, "\n"); |
| } |
| } |
| if ((count % 16) != 0) |
| vms_debug (-level, "\n"); |
| } |
| #endif |
| |
| |
| /* Copy sized string (string with fixed size) to new allocated area. |
| Size is string size (size of record). */ |
| |
| char * |
| _bfd_vms_save_sized_string (bfd *abfd, unsigned char *str, size_t size) |
| { |
| char *newstr; |
| |
| if (size == (size_t) -1) |
| { |
| bfd_set_error (bfd_error_no_memory); |
| return NULL; |
| } |
| newstr = bfd_alloc (abfd, size + 1); |
| if (newstr == NULL) |
| return NULL; |
| memcpy (newstr, str, size); |
| newstr[size] = 0; |
| |
| return newstr; |
| } |
| |
| /* Copy counted string (string with size at first byte) to new allocated area. |
| PTR points to size byte on entry. */ |
| |
| char * |
| _bfd_vms_save_counted_string (bfd *abfd, unsigned char *ptr, size_t maxlen) |
| { |
| unsigned int len; |
| |
| if (maxlen == 0) |
| return NULL; |
| len = *ptr++; |
| if (len > maxlen - 1) |
| return NULL; |
| return _bfd_vms_save_sized_string (abfd, ptr, len); |
| } |
| |
| /* Object output routines. */ |
| |
| /* Begin new record. |
| Write 2 bytes rectype and 2 bytes record length. */ |
| |
| void |
| _bfd_vms_output_begin (struct vms_rec_wr *recwr, int rectype) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_begin (type %d)\n", rectype)); |
| |
| /* Record must have been closed. */ |
| BFD_ASSERT (recwr->size == 0); |
| |
| _bfd_vms_output_short (recwr, (unsigned int) rectype); |
| |
| /* Placeholder for length. */ |
| _bfd_vms_output_short (recwr, 0); |
| } |
| |
| /* Begin new sub-record. |
| Write 2 bytes rectype, and 2 bytes record length. */ |
| |
| void |
| _bfd_vms_output_begin_subrec (struct vms_rec_wr *recwr, int rectype) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_begin_subrec (type %d)\n", rectype)); |
| |
| /* Subrecord must have been closed. */ |
| BFD_ASSERT (recwr->subrec_offset == 0); |
| |
| /* Save start of subrecord offset. */ |
| recwr->subrec_offset = recwr->size; |
| |
| /* Subrecord type. */ |
| _bfd_vms_output_short (recwr, (unsigned int) rectype); |
| |
| /* Placeholder for length. */ |
| _bfd_vms_output_short (recwr, 0); |
| } |
| |
| /* Set record/subrecord alignment. */ |
| |
| void |
| _bfd_vms_output_alignment (struct vms_rec_wr *recwr, int alignto) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_alignment (%d)\n", alignto)); |
| recwr->align = alignto; |
| } |
| |
| /* Align the size of the current record (whose length is LENGTH). |
| Warning: this obviously changes the record (and the possible subrecord) |
| length. */ |
| |
| static void |
| _bfd_vms_output_align (struct vms_rec_wr *recwr, unsigned int length) |
| { |
| unsigned int real_size = recwr->size; |
| unsigned int aligncount; |
| |
| /* Pad with 0 if alignment is required. */ |
| aligncount = (recwr->align - (length % recwr->align)) % recwr->align; |
| vms_debug2 ((6, "align: adding %d bytes\n", aligncount)); |
| while (aligncount-- > 0) |
| recwr->buf[real_size++] = 0; |
| |
| recwr->size = real_size; |
| } |
| |
| /* Ends current sub-record. Set length field. */ |
| |
| void |
| _bfd_vms_output_end_subrec (struct vms_rec_wr *recwr) |
| { |
| int real_size = recwr->size; |
| int length; |
| |
| /* Subrecord must be open. */ |
| BFD_ASSERT (recwr->subrec_offset != 0); |
| |
| length = real_size - recwr->subrec_offset; |
| |
| if (length == 0) |
| return; |
| |
| _bfd_vms_output_align (recwr, length); |
| |
| /* Put length to buffer. */ |
| bfd_putl16 ((bfd_vma) (recwr->size - recwr->subrec_offset), |
| recwr->buf + recwr->subrec_offset + 2); |
| |
| /* Close the subrecord. */ |
| recwr->subrec_offset = 0; |
| } |
| |
| /* Ends current record (and write it). */ |
| |
| void |
| _bfd_vms_output_end (bfd *abfd, struct vms_rec_wr *recwr) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_end (size %u)\n", recwr->size)); |
| |
| /* Subrecord must have been closed. */ |
| BFD_ASSERT (recwr->subrec_offset == 0); |
| |
| if (recwr->size == 0) |
| return; |
| |
| _bfd_vms_output_align (recwr, recwr->size); |
| |
| /* Write the length word. */ |
| bfd_putl16 ((bfd_vma) recwr->size, recwr->buf + 2); |
| |
| /* File is open in undefined (UDF) format on VMS, but ultimately will be |
| converted to variable length (VAR) format. VAR format has a length |
| word first which must be explicitly output in UDF format. */ |
| /* So, first the length word. */ |
| bfd_bwrite (recwr->buf + 2, 2, abfd); |
| |
| /* Align. */ |
| if (recwr->size & 1) |
| recwr->buf[recwr->size++] = 0; |
| |
| /* Then the record. */ |
| bfd_bwrite (recwr->buf, (size_t) recwr->size, abfd); |
| |
| recwr->size = 0; |
| } |
| |
| /* Check remaining buffer size. Return what's left. */ |
| |
| int |
| _bfd_vms_output_check (struct vms_rec_wr *recwr, int size) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_check (%d)\n", size)); |
| |
| return (MAX_OUTREC_SIZE - (recwr->size + size + MIN_OUTREC_LUFT)); |
| } |
| |
| /* Output byte (8 bit) value. */ |
| |
| void |
| _bfd_vms_output_byte (struct vms_rec_wr *recwr, unsigned int value) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_byte (%02x)\n", value)); |
| |
| *(recwr->buf + recwr->size) = value; |
| recwr->size += 1; |
| } |
| |
| /* Output short (16 bit) value. */ |
| |
| void |
| _bfd_vms_output_short (struct vms_rec_wr *recwr, unsigned int value) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_short (%04x)\n", value)); |
| |
| bfd_putl16 ((bfd_vma) value & 0xffff, recwr->buf + recwr->size); |
| recwr->size += 2; |
| } |
| |
| /* Output long (32 bit) value. */ |
| |
| void |
| _bfd_vms_output_long (struct vms_rec_wr *recwr, unsigned long value) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_long (%08lx)\n", value)); |
| |
| bfd_putl32 ((bfd_vma) value, recwr->buf + recwr->size); |
| recwr->size += 4; |
| } |
| |
| /* Output quad (64 bit) value. */ |
| |
| void |
| _bfd_vms_output_quad (struct vms_rec_wr *recwr, bfd_vma value) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_quad (%08lx)\n", (unsigned long)value)); |
| |
| bfd_putl64 (value, recwr->buf + recwr->size); |
| recwr->size += 8; |
| } |
| |
| /* Output c-string as counted string. */ |
| |
| void |
| _bfd_vms_output_counted (struct vms_rec_wr *recwr, const char *value) |
| { |
| int len; |
| |
| vms_debug2 ((6, "_bfd_vms_output_counted (%s)\n", value)); |
| |
| len = strlen (value); |
| if (len == 0) |
| { |
| _bfd_error_handler (_("_bfd_vms_output_counted called with zero bytes")); |
| return; |
| } |
| if (len > 255) |
| { |
| _bfd_error_handler (_("_bfd_vms_output_counted called with too many bytes")); |
| return; |
| } |
| _bfd_vms_output_byte (recwr, (unsigned int) len & 0xff); |
| _bfd_vms_output_dump (recwr, (const unsigned char *)value, len); |
| } |
| |
| /* Output character area. */ |
| |
| void |
| _bfd_vms_output_dump (struct vms_rec_wr *recwr, const unsigned char *data, int len) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_dump (%d)\n", len)); |
| |
| if (len == 0) |
| return; |
| |
| memcpy (recwr->buf + recwr->size, data, (size_t) len); |
| recwr->size += len; |
| } |
| |
| /* Output count bytes of value. */ |
| |
| void |
| _bfd_vms_output_fill (struct vms_rec_wr *recwr, int value, int count) |
| { |
| vms_debug2 ((6, "_bfd_vms_output_fill (val %02x times %d)\n", value, count)); |
| |
| if (count == 0) |
| return; |
| memset (recwr->buf + recwr->size, value, (size_t) count); |
| recwr->size += count; |
| } |
| |
| #ifdef VMS |
| /* Convert the file to variable record length format. This is done |
| using undocumented system call sys$modify(). |
| Pure VMS version. */ |
| |
| static void |
| vms_convert_to_var (char * vms_filename) |
| { |
| struct FAB fab = cc$rms_fab; |
| |
| fab.fab$l_fna = vms_filename; |
| fab.fab$b_fns = strlen (vms_filename); |
| fab.fab$b_fac = FAB$M_PUT; |
| fab.fab$l_fop = FAB$M_ESC; |
| fab.fab$l_ctx = RME$C_SETRFM; |
| |
| sys$open (&fab); |
| |
| fab.fab$b_rfm = FAB$C_VAR; |
| |
| sys$modify (&fab); |
| sys$close (&fab); |
| } |
| |
| static int |
| vms_convert_to_var_1 (char *filename, int type) |
| { |
| if (type != DECC$K_FILE) |
| return false; |
| vms_convert_to_var (filename); |
| return true; |
| } |
| |
| /* Convert the file to variable record length format. This is done |
| using undocumented system call sys$modify(). |
| Unix filename version. */ |
| |
| int |
| _bfd_vms_convert_to_var_unix_filename (const char *unix_filename) |
| { |
| if (decc$to_vms (unix_filename, &vms_convert_to_var_1, 0, 1) != 1) |
| return false; |
| return true; |
| } |
| #endif /* VMS */ |
| |
| /* Manufacture a VMS like time on a unix based system. |
| stolen from obj-vms.c. */ |
| |
| unsigned char * |
| get_vms_time_string (unsigned char *tbuf) |
| { |
| #ifndef VMS |
| char *pnt; |
| time_t timeb; |
| |
| time (& timeb); |
| pnt = ctime (&timeb); |
| pnt[3] = 0; |
| pnt[7] = 0; |
| pnt[10] = 0; |
| pnt[16] = 0; |
| pnt[24] = 0; |
| sprintf ((char *) tbuf, "%2s-%3s-%s %s", |
| pnt + 8, pnt + 4, pnt + 20, pnt + 11); |
| #else |
| struct |
| { |
| int Size; |
| unsigned char *Ptr; |
| } Descriptor; |
| Descriptor.Size = 17; |
| Descriptor.Ptr = tbuf; |
| SYS$ASCTIM (0, &Descriptor, 0, 0); |
| #endif /* not VMS */ |
| |
| vms_debug2 ((6, "vmstimestring:'%s'\n", tbuf)); |
| |
| return tbuf; |
| } |
| |
| /* Create module name from filename (ie, extract the basename and convert it |
| in upper cases). Works on both VMS and UNIX pathes. |
| The result has to be free(). */ |
| |
| char * |
| vms_get_module_name (const char *filename, bool upcase) |
| { |
| char *fname, *fptr; |
| const char *fout; |
| |
| /* Strip VMS path. */ |
| fout = strrchr (filename, ']'); |
| if (fout == NULL) |
| fout = strchr (filename, ':'); |
| if (fout != NULL) |
| fout++; |
| else |
| fout = filename; |
| |
| /* Strip UNIX path. */ |
| fptr = strrchr (fout, '/'); |
| if (fptr != NULL) |
| fout = fptr + 1; |
| |
| fname = strdup (fout); |
| |
| /* Strip suffix. */ |
| fptr = strrchr (fname, '.'); |
| if (fptr != 0) |
| *fptr = 0; |
| |
| /* Convert to upper case and truncate at 31 characters. |
| (VMS object file format restricts module name length to 31). */ |
| fptr = fname; |
| for (fptr = fname; *fptr != 0; fptr++) |
| { |
| if (*fptr == ';' || (fptr - fname) >= 31) |
| { |
| *fptr = 0; |
| break; |
| } |
| if (upcase) |
| *fptr = TOUPPER (*fptr); |
| } |
| return fname; |
| } |
| |
| /* Compared to usual UNIX time_t, VMS time has less limits: |
| - 64 bit (63 bits in fact as the MSB must be 0) |
| - 100ns granularity |
| - epoch is Nov 17, 1858. |
| Here has the constants and the routines used to convert VMS from/to UNIX time. |
| The conversion routines don't assume 64 bits arithmetic. |
| |
| Here we assume that the definition of time_t is the UNIX one, ie integer |
| type, expressing seconds since the epoch. */ |
| |
| /* UNIX time granularity for VMS, ie 1s / 100ns. */ |
| #define VMS_TIME_FACTOR 10000000 |
| |
| /* Number of seconds since VMS epoch of the UNIX epoch. */ |
| #define VMS_TIME_OFFSET 3506716800U |
| |
| /* Convert a VMS time to a unix time. */ |
| |
| time_t |
| vms_time_to_time_t (unsigned int hi, unsigned int lo) |
| { |
| unsigned int tmp; |
| unsigned int rlo; |
| int i; |
| time_t res; |
| |
| /* First convert to seconds. */ |
| tmp = hi % VMS_TIME_FACTOR; |
| hi = hi / VMS_TIME_FACTOR; |
| rlo = 0; |
| for (i = 0; i < 4; i++) |
| { |
| tmp = (tmp << 8) | (lo >> 24); |
| lo <<= 8; |
| |
| rlo = (rlo << 8) | (tmp / VMS_TIME_FACTOR); |
| tmp %= VMS_TIME_FACTOR; |
| } |
| lo = rlo; |
| |
| /* Return 0 in case of overflow. */ |
| if (hi > 1 |
| || (hi == 1 && lo >= VMS_TIME_OFFSET)) |
| return 0; |
| |
| /* Return 0 in case of underflow. */ |
| if (hi == 0 && lo < VMS_TIME_OFFSET) |
| return 0; |
| |
| res = lo - VMS_TIME_OFFSET; |
| if (res <= 0) |
| return 0; |
| return res; |
| } |
| |
| /* Convert a time_t to a VMS time. */ |
| |
| void |
| vms_time_t_to_vms_time (time_t ut, unsigned int *hi, unsigned int *lo) |
| { |
| unsigned int val[4]; |
| unsigned int tmp[4]; |
| unsigned int carry; |
| int i; |
| |
| /* Put into val. */ |
| val[0] = ut & 0xffff; |
| val[1] = (ut >> 16) & 0xffff; |
| val[2] = sizeof (ut) > 4 ? (ut >> 32) & 0xffff : 0; |
| val[3] = sizeof (ut) > 4 ? (ut >> 48) & 0xffff : 0; |
| |
| /* Add offset. */ |
| tmp[0] = VMS_TIME_OFFSET & 0xffff; |
| tmp[1] = VMS_TIME_OFFSET >> 16; |
| tmp[2] = 0; |
| tmp[3] = 0; |
| carry = 0; |
| for (i = 0; i < 4; i++) |
| { |
| carry += tmp[i] + val[i]; |
| val[i] = carry & 0xffff; |
| carry = carry >> 16; |
| } |
| |
| /* Multiply by factor, well first by 10000 and then by 1000. */ |
| carry = 0; |
| for (i = 0; i < 4; i++) |
| { |
| carry += val[i] * 10000; |
| val[i] = carry & 0xffff; |
| carry = carry >> 16; |
| } |
| carry = 0; |
| for (i = 0; i < 4; i++) |
| { |
| carry += val[i] * 1000; |
| val[i] = carry & 0xffff; |
| carry = carry >> 16; |
| } |
| |
| /* Write the result. */ |
| *lo = val[0] | (val[1] << 16); |
| *hi = val[2] | (val[3] << 16); |
| } |
| |
| /* Convert a raw (stored in a buffer) VMS time to a unix time. */ |
| |
| time_t |
| vms_rawtime_to_time_t (unsigned char *buf) |
| { |
| unsigned int hi = bfd_getl32 (buf + 4); |
| unsigned int lo = bfd_getl32 (buf + 0); |
| |
| return vms_time_to_time_t (hi, lo); |
| } |
| |
| void |
| vms_get_time (unsigned int *hi, unsigned int *lo) |
| { |
| #ifdef VMS |
| struct _generic_64 t; |
| |
| sys$gettim (&t); |
| *lo = t.gen64$q_quadword; |
| *hi = t.gen64$q_quadword >> 32; |
| #else |
| time_t t; |
| |
| time (&t); |
| vms_time_t_to_vms_time (t, hi, lo); |
| #endif |
| } |
| |
| /* Get the current time into a raw buffer BUF. */ |
| |
| void |
| vms_raw_get_time (unsigned char *buf) |
| { |
| unsigned int hi, lo; |
| |
| vms_get_time (&hi, &lo); |
| bfd_putl32 (lo, buf + 0); |
| bfd_putl32 (hi, buf + 4); |
| } |