- int test_len, test_start, remaining;
- unsigned char *vms_buf;
-
-#if VMS_DEBUG
- vms_debug (8, "_bfd_vms_get_record\n");
-#endif
-
- /* minimum is 6 bytes on Alpha
- (2 bytes length, 2 bytes record id, 2 bytes length repeated)
-
- on VAX there's no length information in the record
- so start with OBJ_S_C_MAXRECSIZ */
-
- if (PRIV(buf_size) == 0)
- {
- if (PRIV(is_vax))
- {
- PRIV(vms_buf) = (unsigned char *) malloc (OBJ_S_C_MAXRECSIZ);
- PRIV(buf_size) = OBJ_S_C_MAXRECSIZ;
- PRIV(file_format) = FF_VAX;
- }
- else
- PRIV(vms_buf) = (unsigned char *) malloc (6);
- }
-
- vms_buf = PRIV(vms_buf);
-
- if (vms_buf == 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return -1;
- }
-
- switch (PRIV(file_format))
- {
- case FF_UNKNOWN:
- case FF_FOREIGN:
- test_len = 6; /* probe 6 bytes */
- test_start = 2; /* where the record starts */
- break;
-
- case FF_NATIVE:
- test_len = 4;
- test_start = 0;
- break;
-
- case FF_VAX:
- test_len = 0;
- test_start = 0;
- break;
- }
-
- /* skip odd alignment byte */
-
- if (bfd_tell (abfd) & 1)
- {
- if (bfd_read (PRIV(vms_buf), 1, 1, abfd) != 1)
- {
- bfd_set_error (bfd_error_file_truncated);
- return 0;
- }
- }
-
- /* read the record header on Alpha. */
-
- if ((test_len != 0)
- && (bfd_read (PRIV(vms_buf), 1, test_len, abfd)
- != (bfd_size_type) test_len))
- {
- bfd_set_error (bfd_error_file_truncated);
- return 0;
- }
-
- /* check file format on first call */
-
- if (PRIV(file_format) == FF_UNKNOWN)
- { /* record length repeats ? */
- if ( (vms_buf[0] == vms_buf[4])
- && (vms_buf[1] == vms_buf[5]))
- {
- PRIV(file_format) = FF_FOREIGN; /* Y: foreign environment */
- test_start = 2;
- }
- else
- {
- PRIV(file_format) = FF_NATIVE; /* N: native environment */
- test_start = 0;
- }
- }
-
- if (PRIV(is_vax))
- {
- PRIV(rec_length) = bfd_read (vms_buf, 1, PRIV(buf_size), abfd);
- if (PRIV(rec_length) <= 0)
- {
- bfd_set_error (bfd_error_file_truncated);
- return 0;
- }
- PRIV(vms_rec) = vms_buf;
- }
- else /* Alpha */
- {
- /* extract vms record length */
-
- _bfd_vms_get_header_values (abfd, vms_buf+test_start, NULL,
- &PRIV(rec_length));
-
- if (PRIV(rec_length) <= 0)
- {
- bfd_set_error (bfd_error_file_truncated);
- return 0;
- }
-
- /* that's what the linker manual says */