| /* vms-misc.c -- BFD back-end for VMS/VAX (openVMS/VAX) and |
| EVAX (openVMS/Alpha) files. |
| Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
| 2007, 2008, 2009 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 "vms.h" |
| |
| #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
| |
| static int hash_string PARAMS ((const char *)); |
| static asymbol *new_symbol PARAMS ((bfd *, char *)); |
| static void maybe_adjust_record_pointer_for_object PARAMS ((bfd *)); |
| static int vms_get_remaining_object_record PARAMS ((bfd *, int )); |
| static int vms_get_remaining_image_record PARAMS ((bfd *, int )); |
| |
| #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 |
| |
| /* Hash functions |
| |
| These are needed when reading an object file. */ |
| |
| /* Allocate new vms_hash_entry |
| keep the symbol name and a pointer to the bfd symbol in the table. */ |
| |
| struct bfd_hash_entry * |
| _bfd_vms_hash_newfunc (struct bfd_hash_entry *entry, |
| struct bfd_hash_table *table, |
| const char *string) |
| { |
| vms_symbol_entry *ret; |
| |
| #if VMS_DEBUG |
| vms_debug (5, "_bfd_vms_hash_newfunc (%p, %p, %s)\n", entry, table, string); |
| #endif |
| |
| if (entry == NULL) |
| { |
| ret = (vms_symbol_entry *) |
| bfd_hash_allocate (table, sizeof (vms_symbol_entry)); |
| if (ret == NULL) |
| { |
| bfd_set_error (bfd_error_no_memory); |
| return NULL; |
| } |
| entry = (struct bfd_hash_entry *) ret; |
| } |
| |
| /* Call the allocation method of the base class. */ |
| ret = (vms_symbol_entry *) bfd_hash_newfunc (entry, table, string); |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_hash_newfunc ret %p\n", ret); |
| #endif |
| |
| ret->symbol = NULL; |
| |
| return (struct bfd_hash_entry *)ret; |
| } |
| |
| /* Object file input functions. */ |
| |
| /* Return type and size from record header (buf) on Alpha. */ |
| |
| void |
| _bfd_vms_get_header_values (bfd * abfd ATTRIBUTE_UNUSED, |
| unsigned char *buf, |
| int *type, |
| int *size) |
| { |
| if (type) |
| *type = bfd_getl16 (buf); |
| |
| if (size) |
| *size = bfd_getl16 (buf+2); |
| |
| #if VMS_DEBUG |
| vms_debug (10, "_bfd_vms_get_header_values type %x, size %x\n", |
| type ? *type : 0, size ? *size : 0); |
| #endif |
| } |
| |
| /* Get next record from object file to vms_buf. |
| Set PRIV(buf_size) and return it |
| |
| This is a little tricky since it should be portable. |
| |
| The openVMS object file has 'variable length' which means that |
| read() returns data in chunks of (hopefully) correct and expected |
| size. The linker (and other tools on VMS) depend on that. Unix |
| doesn't know about 'formatted' files, so reading and writing such |
| an object file in a Unix environment is not trivial. |
| |
| With the tool 'file' (available on all VMS FTP sites), one |
| can view and change the attributes of a file. Changing from |
| 'variable length' to 'fixed length, 512 bytes' reveals the |
| record size at the first 2 bytes of every record. The same |
| may happen during the transfer of object files from VMS to Unix, |
| at least with UCX, the DEC implementation of TCP/IP. |
| |
| The VMS format repeats the size at bytes 2 & 3 of every record. |
| |
| On the first call (file_format == FF_UNKNOWN) we check if |
| the first and the third byte pair (!) of the record match. |
| If they do it's an object file in an Unix environment or with |
| wrong attributes (FF_FOREIGN), else we should be in a VMS |
| environment where read() returns the record size (FF_NATIVE). |
| |
| Reading is always done in 2 steps: |
| 1. first just the record header is read and the size extracted, |
| 2. then the read buffer is adjusted and the remaining bytes are |
| read in. |
| |
| All file I/O is done on even file positions. */ |
| |
| #define VMS_OBJECT_ADJUSTMENT 2 |
| |
| static void |
| maybe_adjust_record_pointer_for_object (bfd *abfd) |
| { |
| /* Set the file format once for all on the first invocation. */ |
| if (PRIV (file_format) == FF_UNKNOWN) |
| { |
| if (PRIV (vms_rec)[0] == PRIV (vms_rec)[4] |
| && PRIV (vms_rec)[1] == PRIV (vms_rec)[5]) |
| PRIV (file_format) = FF_FOREIGN; |
| else |
| PRIV (file_format) = FF_NATIVE; |
| } |
| |
| /* The adjustment is needed only in an Unix environment. */ |
| if (PRIV (file_format) == FF_FOREIGN) |
| PRIV (vms_rec) += VMS_OBJECT_ADJUSTMENT; |
| } |
| |
| /* Get first record from file and return the file type. */ |
| |
| int |
| _bfd_vms_get_first_record (bfd *abfd) |
| { |
| unsigned int test_len; |
| |
| #if VMS_DEBUG |
| vms_debug (8, "_bfd_vms_get_first_record\n"); |
| #endif |
| |
| if (PRIV (is_vax)) |
| test_len = 0; |
| else |
| /* Minimum is 6 bytes for objects (2 bytes size, 2 bytes record id, |
| 2 bytes size repeated) and 12 bytes for images (4 bytes major id, |
| 4 bytes minor id, 4 bytes length). */ |
| test_len = 12; |
| |
| /* Size the main buffer. */ |
| if (PRIV (buf_size) == 0) |
| { |
| /* On VAX there's no size information in the record, so |
| start with OBJ_S_C_MAXRECSIZ. */ |
| bfd_size_type amt = (test_len ? test_len : OBJ_S_C_MAXRECSIZ); |
| PRIV (vms_buf) = (unsigned char *) bfd_malloc (amt); |
| PRIV (buf_size) = amt; |
| } |
| |
| /* Initialize the record pointer. */ |
| PRIV (vms_rec) = PRIV (vms_buf); |
| |
| /* We only support modules on VAX. */ |
| if (PRIV (is_vax)) |
| { |
| if (vms_get_remaining_object_record (abfd, test_len) <= 0) |
| return FT_UNKNOWN; |
| |
| #if VMS_DEBUG |
| vms_debug (2, "file type is VAX module\n"); |
| #endif |
| |
| return FT_MODULE; |
| } |
| |
| if (bfd_bread (PRIV (vms_buf), test_len, abfd) != test_len) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return FT_UNKNOWN; |
| } |
| |
| /* Is it an image? */ |
| if ((bfd_getl32 (PRIV (vms_rec)) == EIHD_S_K_MAJORID) |
| && (bfd_getl32 (PRIV (vms_rec) + 4) == EIHD_S_K_MINORID)) |
| { |
| if (vms_get_remaining_image_record (abfd, test_len) <= 0) |
| return FT_UNKNOWN; |
| |
| #if VMS_DEBUG |
| vms_debug (2, "file type is image\n"); |
| #endif |
| |
| return FT_IMAGE; |
| } |
| |
| /* Assume it's a module and adjust record pointer if necessary. */ |
| maybe_adjust_record_pointer_for_object (abfd); |
| |
| /* But is it really a module? */ |
| if (bfd_getl16 (PRIV (vms_rec)) <= EOBJ_S_C_MAXRECTYP |
| && bfd_getl16 (PRIV (vms_rec) + 2) <= EOBJ_S_C_MAXRECSIZ) |
| { |
| if (vms_get_remaining_object_record (abfd, test_len) <= 0) |
| return FT_UNKNOWN; |
| |
| #if VMS_DEBUG |
| vms_debug (2, "file type is module\n"); |
| #endif |
| |
| return FT_MODULE; |
| } |
| |
| #if VMS_DEBUG |
| vms_debug (2, "file type is unknown\n"); |
| #endif |
| |
| return FT_UNKNOWN; |
| } |
| |
| /* Implement step #1 of the object record reading procedure. |
| Return the record type or -1 on failure. */ |
| |
| int |
| _bfd_vms_get_object_record (bfd *abfd) |
| { |
| unsigned int test_len; |
| int type; |
| |
| #if VMS_DEBUG |
| vms_debug (8, "_bfd_vms_get_obj_record\n"); |
| #endif |
| |
| if (PRIV (is_vax)) |
| test_len = 0; |
| else |
| { |
| int off = 0; |
| |
| /* See _bfd_vms_get_first_record. */ |
| test_len = 6; |
| |
| /* Skip odd alignment byte. */ |
| if (bfd_tell (abfd) & 1) |
| { |
| if (bfd_bread (PRIV (vms_buf), 1, abfd) != 1) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return -1; |
| } |
| /* Alignment byte may be present or not. This is not easy to |
| detect but all object record types are not 0 (on Alpha VMS). |
| We also hope that pad byte is 0. */ |
| if (PRIV (vms_buf)[0]) |
| off = 1; |
| } |
| |
| /* Read the record header */ |
| if (bfd_bread (PRIV (vms_buf) + off, test_len - off, abfd) |
| != test_len - off) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return -1; |
| } |
| |
| /* Reset the record pointer. */ |
| PRIV (vms_rec) = PRIV (vms_buf); |
| maybe_adjust_record_pointer_for_object (abfd); |
| } |
| |
| if (vms_get_remaining_object_record (abfd, test_len) <= 0) |
| return -1; |
| |
| if (PRIV (is_vax)) |
| type = PRIV (vms_rec) [0]; |
| else |
| type = bfd_getl16 (PRIV (vms_rec)); |
| |
| #if VMS_DEBUG |
| vms_debug (8, "_bfd_vms_get_obj_record: rec %p, size %d, type %d\n", |
| PRIV (vms_rec), PRIV (rec_size), type); |
| #endif |
| |
| return type; |
| } |
| |
| /* Implement step #2 of the object record reading procedure. |
| Return the size of the record or 0 on failure. */ |
| |
| static int |
| vms_get_remaining_object_record (bfd *abfd, int read_so_far) |
| { |
| #if VMS_DEBUG |
| vms_debug (8, "vms_get_remaining_obj_record\n"); |
| #endif |
| |
| if (PRIV (is_vax)) |
| { |
| if (read_so_far != 0) |
| abort (); |
| |
| PRIV (rec_size) = bfd_bread (PRIV (vms_buf), PRIV (buf_size), abfd); |
| |
| if (PRIV (rec_size) <= 0) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return 0; |
| } |
| |
| /* Reset the record pointer. */ |
| PRIV (vms_rec) = PRIV (vms_buf); |
| } |
| else |
| { |
| unsigned int to_read; |
| |
| /* Extract record size. */ |
| PRIV (rec_size) = bfd_getl16 (PRIV (vms_rec) + 2); |
| |
| if (PRIV (rec_size) <= 0) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return 0; |
| } |
| |
| /* That's what the linker manual says. */ |
| if (PRIV (rec_size) > EOBJ_S_C_MAXRECSIZ) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return 0; |
| } |
| |
| /* Take into account object adjustment. */ |
| to_read = PRIV (rec_size); |
| if (PRIV (file_format) == FF_FOREIGN) |
| to_read += VMS_OBJECT_ADJUSTMENT; |
| |
| /* Adjust the buffer. */ |
| if (to_read > PRIV (buf_size)) |
| { |
| PRIV (vms_buf) |
| = (unsigned char *) bfd_realloc (PRIV (vms_buf), to_read); |
| if (PRIV (vms_buf) == NULL) |
| return 0; |
| PRIV (buf_size) = to_read; |
| } |
| |
| /* Read the remaining record. */ |
| to_read -= read_so_far; |
| |
| #if VMS_DEBUG |
| vms_debug (8, "vms_get_remaining_obj_record: to_read %d\n", to_read); |
| #endif |
| |
| if (bfd_bread (PRIV (vms_buf) + read_so_far, to_read, abfd) != to_read) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return 0; |
| } |
| |
| /* Reset the record pointer. */ |
| PRIV (vms_rec) = PRIV (vms_buf); |
| maybe_adjust_record_pointer_for_object (abfd); |
| } |
| |
| #if VMS_DEBUG |
| vms_debug (8, "vms_get_remaining_obj_record: size %d\n", PRIV (rec_size)); |
| #endif |
| |
| return PRIV (rec_size); |
| } |
| |
| /* Implement step #2 of the record reading procedure for images. |
| Return the size of the record or 0 on failure. */ |
| |
| static int |
| vms_get_remaining_image_record (bfd *abfd, int read_so_far) |
| { |
| unsigned int to_read; |
| int remaining; |
| |
| /* Extract record size. */ |
| PRIV (rec_size) = bfd_getl32 (PRIV (vms_rec) + EIHD_S_L_SIZE); |
| |
| if (PRIV (rec_size) > PRIV (buf_size)) |
| { |
| PRIV (vms_buf) = bfd_realloc (PRIV (vms_buf), PRIV (rec_size)); |
| |
| if (PRIV (vms_buf) == NULL) |
| { |
| bfd_set_error (bfd_error_no_memory); |
| return 0; |
| } |
| |
| PRIV (buf_size) = PRIV (rec_size); |
| } |
| |
| /* Read the remaining record. */ |
| remaining = PRIV (rec_size) - read_so_far; |
| to_read = MIN (VMS_BLOCK_SIZE - read_so_far, remaining); |
| |
| while (remaining > 0) |
| { |
| if (bfd_bread (PRIV (vms_buf) + read_so_far, to_read, abfd) != to_read) |
| { |
| bfd_set_error (bfd_error_file_truncated); |
| return 0; |
| } |
| |
| read_so_far += to_read; |
| remaining -= to_read; |
| |
| /* Eat trailing 0xff's. */ |
| if (remaining > 0) |
| while (PRIV (vms_buf) [read_so_far - 1] == 0xff) |
| read_so_far--; |
| |
| to_read = MIN (VMS_BLOCK_SIZE, remaining); |
| } |
| |
| /* Reset the record pointer. */ |
| PRIV (vms_rec) = PRIV (vms_buf); |
| |
| return PRIV (rec_size); |
| } |
| |
| /* Copy sized string (string with fixed size) to new allocated area |
| size is string size (size of record) */ |
| |
| char * |
| _bfd_vms_save_sized_string (unsigned char *str, int size) |
| { |
| char *newstr = bfd_malloc ((bfd_size_type) size + 1); |
| |
| if (newstr == NULL) |
| return NULL; |
| strncpy (newstr, (char *) str, (size_t) 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 (unsigned char *ptr) |
| { |
| int len = *ptr++; |
| |
| return _bfd_vms_save_sized_string (ptr, len); |
| } |
| |
| /* Stack routines for vms ETIR commands. */ |
| |
| /* Push value and section index. */ |
| |
| void |
| _bfd_vms_push (bfd * abfd, uquad val, int psect) |
| { |
| static int last_psect; |
| |
| #if VMS_DEBUG |
| vms_debug (4, "<push %016lx (%d) at %d>\n", val, psect, PRIV (stackptr)); |
| #endif |
| |
| if (psect >= 0) |
| last_psect = psect; |
| |
| PRIV (stack[PRIV (stackptr)]).value = val; |
| PRIV (stack[PRIV (stackptr)]).psect = last_psect; |
| PRIV (stackptr)++; |
| if (PRIV (stackptr) >= STACKSIZE) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| (*_bfd_error_handler) (_("Stack overflow (%d) in _bfd_vms_push"), PRIV (stackptr)); |
| exit (1); |
| } |
| } |
| |
| /* Pop value and section index. */ |
| |
| uquad |
| _bfd_vms_pop (bfd * abfd, int *psect) |
| { |
| uquad value; |
| |
| if (PRIV (stackptr) == 0) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| (*_bfd_error_handler) (_("Stack underflow in _bfd_vms_pop")); |
| exit (1); |
| } |
| PRIV (stackptr)--; |
| value = PRIV (stack[PRIV (stackptr)]).value; |
| if ((psect != NULL) && (PRIV (stack[PRIV (stackptr)]).psect >= 0)) |
| *psect = PRIV (stack[PRIV (stackptr)]).psect; |
| |
| #if VMS_DEBUG |
| vms_debug (4, "<pop %016lx(%d)>\n", value, PRIV (stack[PRIV (stackptr)]).psect); |
| #endif |
| |
| return value; |
| } |
| |
| /* Object output routines. */ |
| |
| /* Begin new record or record header |
| write 2 bytes rectype |
| write 2 bytes record length (filled in at flush) |
| write 2 bytes header type (ommitted if rechead == -1). */ |
| |
| void |
| _bfd_vms_output_begin (bfd * abfd, int rectype, int rechead) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_begin (type %d, head %d)\n", rectype, |
| rechead); |
| #endif |
| |
| _bfd_vms_output_short (abfd, (unsigned int) rectype); |
| |
| /* Save current output position to fill in length later. */ |
| |
| if (PRIV (push_level) > 0) |
| PRIV (length_pos) = PRIV (output_size); |
| |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_begin: length_pos = %d\n", |
| PRIV (length_pos)); |
| #endif |
| |
| /* Placeholder for length. */ |
| _bfd_vms_output_short (abfd, 0); |
| |
| if (rechead != -1) |
| _bfd_vms_output_short (abfd, (unsigned int) rechead); |
| } |
| |
| /* Set record/subrecord alignment. */ |
| |
| void |
| _bfd_vms_output_alignment (bfd * abfd, int alignto) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_alignment (%d)\n", alignto); |
| #endif |
| |
| PRIV (output_alignment) = alignto; |
| } |
| |
| /* Prepare for subrecord fields. */ |
| |
| void |
| _bfd_vms_output_push (bfd * abfd) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "vms_output_push (pushed_size = %d)\n", PRIV (output_size)); |
| #endif |
| |
| PRIV (push_level)++; |
| PRIV (pushed_size) = PRIV (output_size); |
| } |
| |
| /* End of subrecord fields. */ |
| |
| void |
| _bfd_vms_output_pop (bfd * abfd) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "vms_output_pop (pushed_size = %d)\n", PRIV (pushed_size)); |
| #endif |
| |
| _bfd_vms_output_flush (abfd); |
| PRIV (length_pos) = 2; |
| |
| #if VMS_DEBUG |
| vms_debug (6, "vms_output_pop: length_pos = %d\n", PRIV (length_pos)); |
| #endif |
| |
| PRIV (pushed_size) = 0; |
| PRIV (push_level)--; |
| } |
| |
| /* Flush unwritten output, ends current record. */ |
| |
| void |
| _bfd_vms_output_flush (bfd * abfd) |
| { |
| int real_size = PRIV (output_size); |
| int aligncount; |
| int length; |
| |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_flush (real_size = %d, pushed_size %d at lenpos %d)\n", |
| real_size, PRIV (pushed_size), PRIV (length_pos)); |
| #endif |
| |
| if (PRIV (push_level) > 0) |
| length = real_size - PRIV (pushed_size); |
| else |
| length = real_size; |
| |
| if (length == 0) |
| return; |
| aligncount = (PRIV (output_alignment) |
| - (length % PRIV (output_alignment))) % PRIV (output_alignment); |
| |
| #if VMS_DEBUG |
| vms_debug (6, "align: adding %d bytes\n", aligncount); |
| #endif |
| |
| while (aligncount-- > 0) |
| { |
| PRIV (output_buf)[real_size++] = 0; |
| length++; |
| } |
| |
| /* Put length to buffer. */ |
| PRIV (output_size) = PRIV (length_pos); |
| _bfd_vms_output_short (abfd, (unsigned int) length); |
| |
| if (PRIV (push_level) == 0) |
| { |
| /* 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. */ |
| bfd_bwrite (PRIV (output_buf) + 2, 2, abfd); |
| bfd_bwrite (PRIV (output_buf), (size_t) real_size, abfd); |
| PRIV (output_size) = 0; |
| } |
| else |
| { |
| PRIV (output_size) = real_size; |
| PRIV (pushed_size) = PRIV (output_size); |
| } |
| } |
| |
| /* End record output. */ |
| |
| void |
| _bfd_vms_output_end (bfd * abfd) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_end\n"); |
| #endif |
| |
| _bfd_vms_output_flush (abfd); |
| } |
| |
| /* Check remaining buffer size |
| |
| Return what's left. */ |
| |
| int |
| _bfd_vms_output_check (bfd * abfd, int size) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_check (%d)\n", size); |
| #endif |
| |
| return (MAX_OUTREC_SIZE - (PRIV (output_size) + size + MIN_OUTREC_LUFT)); |
| } |
| |
| /* Output byte (8 bit) value. */ |
| |
| void |
| _bfd_vms_output_byte (bfd * abfd, unsigned int value) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_byte (%02x)\n", value); |
| #endif |
| |
| bfd_put_8 (abfd, value & 0xff, PRIV (output_buf) + PRIV (output_size)); |
| PRIV (output_size) += 1; |
| } |
| |
| /* Output short (16 bit) value. */ |
| |
| void |
| _bfd_vms_output_short (bfd * abfd, unsigned int value) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_short (%04x)\n", value); |
| #endif |
| |
| bfd_put_16 (abfd, (bfd_vma) value & 0xffff, |
| PRIV (output_buf) + PRIV (output_size)); |
| PRIV (output_size) += 2; |
| } |
| |
| /* Output long (32 bit) value. */ |
| |
| void |
| _bfd_vms_output_long (bfd * abfd, unsigned long value) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_long (%08lx)\n", value); |
| #endif |
| |
| bfd_put_32 (abfd, (bfd_vma) value, PRIV (output_buf) + PRIV (output_size)); |
| PRIV (output_size) += 4; |
| } |
| |
| /* Output quad (64 bit) value. */ |
| |
| void |
| _bfd_vms_output_quad (bfd * abfd, uquad value) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_quad (%016lx)\n", value); |
| #endif |
| |
| bfd_put_64(abfd, value, PRIV (output_buf) + PRIV (output_size)); |
| PRIV (output_size) += 8; |
| } |
| |
| /* Output c-string as counted string. */ |
| |
| void |
| _bfd_vms_output_counted (bfd * abfd, char *value) |
| { |
| int len; |
| |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_counted (%s)\n", value); |
| #endif |
| |
| 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 (abfd, (unsigned int) len & 0xff); |
| _bfd_vms_output_dump (abfd, (unsigned char *) value, len); |
| } |
| |
| /* Output character area. */ |
| |
| void |
| _bfd_vms_output_dump (bfd * abfd, |
| unsigned char *data, |
| int length) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_dump (%d)\n", length); |
| #endif |
| |
| if (length == 0) |
| return; |
| |
| memcpy (PRIV (output_buf) + PRIV (output_size), data, (size_t) length); |
| PRIV (output_size) += length; |
| } |
| |
| /* Output count bytes of value. */ |
| |
| void |
| _bfd_vms_output_fill (bfd * abfd, |
| int value, |
| int count) |
| { |
| #if VMS_DEBUG |
| vms_debug (6, "_bfd_vms_output_fill (val %02x times %d)\n", value, count); |
| #endif |
| |
| if (count == 0) |
| return; |
| memset (PRIV (output_buf) + PRIV (output_size), value, (size_t) count); |
| PRIV (output_size) += count; |
| } |
| |
| /* This hash routine borrowed from GNU-EMACS, and strengthened slightly. ERY. */ |
| |
| static int |
| hash_string (const char *ptr) |
| { |
| const unsigned char *p = (unsigned char *) ptr; |
| const unsigned char *end = p + strlen (ptr); |
| unsigned char c; |
| int hash = 0; |
| |
| while (p != end) |
| { |
| c = *p++; |
| hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); |
| } |
| return hash; |
| } |
| |
| /* Generate a length-hashed VMS symbol name (limited to maxlen chars). */ |
| |
| char * |
| _bfd_vms_length_hash_symbol (bfd * abfd, const char *in, int maxlen) |
| { |
| unsigned long result; |
| int in_len; |
| char *new_name; |
| const char *old_name; |
| int i; |
| static char outbuf[EOBJ_S_C_SYMSIZ+1]; |
| char *out = outbuf; |
| |
| #if VMS_DEBUG |
| vms_debug (4, "_bfd_vms_length_hash_symbol \"%s\"\n", in); |
| #endif |
| |
| if (maxlen > EOBJ_S_C_SYMSIZ) |
| maxlen = EOBJ_S_C_SYMSIZ; |
| |
| /* Save this for later. */ |
| new_name = out; |
| |
| /* We may need to truncate the symbol, save the hash for later. */ |
| in_len = strlen (in); |
| |
| result = (in_len > maxlen) ? hash_string (in) : 0; |
| |
| old_name = in; |
| |
| /* Do the length checking. */ |
| if (in_len <= maxlen) |
| i = in_len; |
| else |
| { |
| if (PRIV (flag_hash_long_names)) |
| i = maxlen-9; |
| else |
| i = maxlen; |
| } |
| |
| strncpy (out, in, (size_t) i); |
| in += i; |
| out += i; |
| |
| if ((in_len > maxlen) |
| && PRIV (flag_hash_long_names)) |
| sprintf (out, "_%08lx", result); |
| else |
| *out = 0; |
| |
| #if VMS_DEBUG |
| vms_debug (4, "--> [%d]\"%s\"\n", strlen (outbuf), outbuf); |
| #endif |
| |
| if (in_len > maxlen |
| && PRIV (flag_hash_long_names) |
| && PRIV (flag_show_after_trunc)) |
| printf (_("Symbol %s replaced by %s\n"), old_name, new_name); |
| |
| return outbuf; |
| } |
| |
| /* Allocate and initialize a new symbol. */ |
| |
| static asymbol * |
| new_symbol (bfd * abfd, char *name) |
| { |
| asymbol *symbol; |
| |
| #if VMS_DEBUG |
| _bfd_vms_debug (7, "new_symbol %s\n", name); |
| #endif |
| |
| symbol = bfd_make_empty_symbol (abfd); |
| if (symbol == 0) |
| return symbol; |
| symbol->name = name; |
| symbol->section = (asection *)(unsigned long)-1; |
| |
| return symbol; |
| } |
| |
| /* Allocate and enter a new private symbol. */ |
| |
| vms_symbol_entry * |
| _bfd_vms_enter_symbol (bfd * abfd, char *name) |
| { |
| vms_symbol_entry *entry; |
| |
| #if VMS_DEBUG |
| _bfd_vms_debug (6, "_bfd_vms_enter_symbol %s\n", name); |
| #endif |
| |
| entry = (vms_symbol_entry *) |
| bfd_hash_lookup (PRIV (vms_symbol_table), name, FALSE, FALSE); |
| if (entry == 0) |
| { |
| #if VMS_DEBUG |
| _bfd_vms_debug (8, "creating hash entry for %s\n", name); |
| #endif |
| entry = (vms_symbol_entry *) bfd_hash_lookup (PRIV (vms_symbol_table), |
| name, TRUE, FALSE); |
| if (entry != 0) |
| { |
| asymbol *symbol; |
| symbol = new_symbol (abfd, name); |
| if (symbol != 0) |
| { |
| entry->symbol = symbol; |
| PRIV (gsd_sym_count)++; |
| abfd->symcount++; |
| } |
| else |
| entry = 0; |
| } |
| else |
| (*_bfd_error_handler) (_("failed to enter %s"), name); |
| } |
| else |
| { |
| #if VMS_DEBUG |
| _bfd_vms_debug (8, "found hash entry for %s\n", name); |
| #endif |
| } |
| |
| #if VMS_DEBUG |
| _bfd_vms_debug (7, "-> entry %p, entry->symbol %p\n", entry, entry->symbol); |
| #endif |
| return entry; |
| } |