1 /* Support for 32-bit Alpha NLM (NetWare Loadable Module)
2 Copyright (C) 1993 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* This file describes the 32 bit Alpha NLM format. You might think
22 that an Alpha chip would use a 64 bit format, but, for some reason,
31 #include "nlm/alpha-ext.h"
32 #define Nlm_External_Fixed_Header Nlm32_alpha_External_Fixed_Header
36 static boolean nlm_alpha_backend_object_p
38 static boolean nlm_alpha_write_prefix
40 static boolean nlm_alpha_read_reloc
41 PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *));
42 static boolean nlm_alpha_mangle_relocs
43 PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type));
44 static boolean nlm_alpha_read_import
45 PARAMS ((bfd *, nlmNAME(symbol_type) *));
46 static boolean nlm_alpha_write_import
47 PARAMS ((bfd *, asection *, arelent *));
48 static boolean nlm_alpha_set_public_section
49 PARAMS ((bfd *, nlmNAME(symbol_type) *));
50 static bfd_vma nlm_alpha_get_public_offset
51 PARAMS ((bfd *, asymbol *));
52 static boolean nlm_alpha_write_external
53 PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *));
55 /* Alpha NLM's have a prefix header before the standard NLM. This
56 function reads it in, verifies the version, and seeks the bfd to
57 the location before the regular NLM header. */
60 nlm_alpha_backend_object_p (abfd)
63 struct nlm32_alpha_external_prefix_header s;
66 if (bfd_read ((PTR) &s, sizeof s, 1, abfd) != sizeof s)
69 if (bfd_h_get_32 (abfd, s.magic) != NLM32_ALPHA_MAGIC)
72 /* FIXME: Should we check the format number? */
74 /* Skip to the end of the header. */
75 size = bfd_h_get_32 (abfd, s.size);
76 if (bfd_seek (abfd, size, SEEK_SET) != 0)
82 /* Write out the prefix. */
85 nlm_alpha_write_prefix (abfd)
88 struct nlm32_alpha_external_prefix_header s;
90 memset (&s, 0, sizeof s);
91 bfd_h_put_32 (abfd, (bfd_vma) NLM32_ALPHA_MAGIC, s.magic);
92 bfd_h_put_32 (abfd, (bfd_vma) 2, s.format);
93 bfd_h_put_32 (abfd, (bfd_vma) sizeof s, s.size);
94 if (bfd_write ((PTR) &s, sizeof s, 1, abfd) != sizeof s)
96 bfd_error = system_call_error;
102 /* How to process the various reloc types. */
104 static reloc_howto_type nlm32_alpha_howto_table[] =
106 /* Reloc type 0 is ignored by itself. However, it appears after a
107 GPDISP reloc to identify the location where the low order 16 bits
108 of the gp register are loaded. */
109 HOWTO (ALPHA_R_IGNORE, /* type */
111 0, /* size (0 = byte, 1 = short, 2 = long) */
113 false, /* pc_relative */
115 complain_overflow_dont, /* complain_on_overflow */
116 0, /* special_function */
118 false, /* partial_inplace */
121 false), /* pcrel_offset */
123 /* A 32 bit reference to a symbol. */
124 HOWTO (ALPHA_R_REFLONG, /* type */
126 2, /* size (0 = byte, 1 = short, 2 = long) */
128 false, /* pc_relative */
130 complain_overflow_bitfield, /* complain_on_overflow */
131 0, /* special_function */
132 "REFLONG", /* name */
133 true, /* partial_inplace */
134 0xffffffff, /* src_mask */
135 0xffffffff, /* dst_mask */
136 false), /* pcrel_offset */
138 /* A 64 bit reference to a symbol. */
139 HOWTO (ALPHA_R_REFQUAD, /* type */
141 4, /* size (0 = byte, 1 = short, 2 = long) */
143 false, /* pc_relative */
145 complain_overflow_bitfield, /* complain_on_overflow */
146 0, /* special_function */
147 "REFQUAD", /* name */
148 true, /* partial_inplace */
149 0xffffffffffffffff, /* src_mask */
150 0xffffffffffffffff, /* dst_mask */
151 false), /* pcrel_offset */
153 /* A 32 bit GP relative offset. This is just like REFLONG except
154 that when the value is used the value of the gp register will be
156 HOWTO (ALPHA_R_GPREL32, /* type */
158 2, /* size (0 = byte, 1 = short, 2 = long) */
160 false, /* pc_relative */
162 complain_overflow_bitfield, /* complain_on_overflow */
163 0, /* special_function */
164 "GPREL32", /* name */
165 true, /* partial_inplace */
166 0xffffffff, /* src_mask */
167 0xffffffff, /* dst_mask */
168 false), /* pcrel_offset */
170 /* Used for an instruction that refers to memory off the GP
171 register. The offset is 16 bits of the 32 bit instruction. This
172 reloc always seems to be against the .lita section. */
173 HOWTO (ALPHA_R_LITERAL, /* type */
175 2, /* size (0 = byte, 1 = short, 2 = long) */
177 false, /* pc_relative */
179 complain_overflow_signed, /* complain_on_overflow */
180 0, /* special_function */
181 "LITERAL", /* name */
182 true, /* partial_inplace */
183 0xffff, /* src_mask */
184 0xffff, /* dst_mask */
185 false), /* pcrel_offset */
187 /* This reloc only appears immediately following a LITERAL reloc.
188 It identifies a use of the literal. It seems that the linker can
189 use this to eliminate a portion of the .lita section. The symbol
190 index is special: 1 means the literal address is in the base
191 register of a memory format instruction; 2 means the literal
192 address is in the byte offset register of a byte-manipulation
193 instruction; 3 means the literal address is in the target
194 register of a jsr instruction. This does not actually do any
196 HOWTO (ALPHA_R_LITUSE, /* type */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
200 false, /* pc_relative */
202 complain_overflow_dont, /* complain_on_overflow */
203 0, /* special_function */
205 false, /* partial_inplace */
208 false), /* pcrel_offset */
210 /* Load the gp register. This is always used for a ldah instruction
211 which loads the upper 16 bits of the gp register. The next reloc
212 will be an IGNORE reloc which identifies the location of the lda
213 instruction which loads the lower 16 bits. The symbol index of
214 the GPDISP instruction appears to actually be the number of bytes
215 between the ldah and lda instructions. This gives two different
216 ways to determine where the lda instruction is; I don't know why
217 both are used. The value to use for the relocation is the
218 difference between the GP value and the current location; the
219 load will always be done against a register holding the current
221 HOWTO (ALPHA_R_GPDISP, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 true, /* pc_relative */
227 complain_overflow_dont, /* complain_on_overflow */
228 0, /* special_function */
230 true, /* partial_inplace */
231 0xffff, /* src_mask */
232 0xffff, /* dst_mask */
233 true), /* pcrel_offset */
235 /* A 21 bit branch. The native assembler generates these for
236 branches within the text segment, and also fills in the PC
237 relative offset in the instruction. It seems to me that this
238 reloc, unlike the others, is not partial_inplace. */
239 HOWTO (ALPHA_R_BRADDR, /* type */
241 2, /* size (0 = byte, 1 = short, 2 = long) */
243 true, /* pc_relative */
245 complain_overflow_signed, /* complain_on_overflow */
246 0, /* special_function */
248 false, /* partial_inplace */
250 0x1fffff, /* dst_mask */
251 false), /* pcrel_offset */
253 /* A hint for a jump to a register. */
254 HOWTO (ALPHA_R_HINT, /* type */
256 2, /* size (0 = byte, 1 = short, 2 = long) */
258 false, /* pc_relative */
260 complain_overflow_dont, /* complain_on_overflow */
261 0, /* special_function */
263 true, /* partial_inplace */
264 0x3fff, /* src_mask */
265 0x3fff, /* dst_mask */
266 false), /* pcrel_offset */
268 /* 16 bit PC relative offset. */
269 HOWTO (ALPHA_R_SREL16, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 true, /* pc_relative */
275 complain_overflow_signed, /* complain_on_overflow */
276 0, /* special_function */
278 true, /* partial_inplace */
279 0xffff, /* src_mask */
280 0xffff, /* dst_mask */
281 false), /* pcrel_offset */
283 /* 32 bit PC relative offset. */
284 HOWTO (ALPHA_R_SREL32, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 true, /* pc_relative */
290 complain_overflow_signed, /* complain_on_overflow */
291 0, /* special_function */
293 true, /* partial_inplace */
294 0xffffffff, /* src_mask */
295 0xffffffff, /* dst_mask */
296 false), /* pcrel_offset */
298 /* A 64 bit PC relative offset. */
299 HOWTO (ALPHA_R_SREL64, /* type */
301 4, /* size (0 = byte, 1 = short, 2 = long) */
303 true, /* pc_relative */
305 complain_overflow_signed, /* complain_on_overflow */
306 0, /* special_function */
308 true, /* partial_inplace */
309 0xffffffffffffffff, /* src_mask */
310 0xffffffffffffffff, /* dst_mask */
311 false), /* pcrel_offset */
313 /* Push a value on the reloc evaluation stack. */
314 HOWTO (ALPHA_R_OP_PUSH, /* type */
316 0, /* size (0 = byte, 1 = short, 2 = long) */
318 false, /* pc_relative */
320 complain_overflow_dont, /* complain_on_overflow */
321 0, /* special_function */
322 "OP_PUSH", /* name */
323 false, /* partial_inplace */
326 false), /* pcrel_offset */
328 /* Store the value from the stack at the given address. Store it in
329 a bitfield of size r_size starting at bit position r_offset. */
330 HOWTO (ALPHA_R_OP_STORE, /* type */
332 4, /* size (0 = byte, 1 = short, 2 = long) */
334 false, /* pc_relative */
336 complain_overflow_dont, /* complain_on_overflow */
337 0, /* special_function */
338 "OP_STORE", /* name */
339 false, /* partial_inplace */
341 0xffffffffffffffff, /* dst_mask */
342 false), /* pcrel_offset */
344 /* Subtract the reloc address from the value on the top of the
346 HOWTO (ALPHA_R_OP_PSUB, /* type */
348 0, /* size (0 = byte, 1 = short, 2 = long) */
350 false, /* pc_relative */
352 complain_overflow_dont, /* complain_on_overflow */
353 0, /* special_function */
354 "OP_PSUB", /* name */
355 false, /* partial_inplace */
358 false), /* pcrel_offset */
360 /* Shift the value on the top of the relocation stack right by the
362 HOWTO (ALPHA_R_OP_PRSHIFT, /* type */
364 0, /* size (0 = byte, 1 = short, 2 = long) */
366 false, /* pc_relative */
368 complain_overflow_dont, /* complain_on_overflow */
369 0, /* special_function */
370 "OP_PRSHIFT", /* name */
371 false, /* partial_inplace */
374 false), /* pcrel_offset */
376 /* Adjust the GP value for a new range in the object file. */
377 HOWTO (ALPHA_R_GPVALUE, /* type */
379 0, /* size (0 = byte, 1 = short, 2 = long) */
381 false, /* pc_relative */
383 complain_overflow_dont, /* complain_on_overflow */
384 0, /* special_function */
385 "GPVALUE", /* name */
386 false, /* partial_inplace */
389 false) /* pcrel_offset */
392 static reloc_howto_type nlm32_alpha_nw_howto =
393 HOWTO (ALPHA_R_NW_RELOC, /* type */
395 0, /* size (0 = byte, 1 = short, 2 = long) */
397 false, /* pc_relative */
399 complain_overflow_dont, /* complain_on_overflow */
400 0, /* special_function */
401 "NW_RELOC", /* name */
402 false, /* partial_inplace */
405 false); /* pcrel_offset */
407 /* Read an Alpha NLM reloc. This routine keeps some static data which
408 it uses when handling local relocs. This only works correctly
409 because all the local relocs are read at once. */
412 nlm_alpha_read_reloc (abfd, sym, secp, rel)
414 nlmNAME(symbol_type) *sym;
418 static bfd_vma gp_value;
419 static bfd_vma lita_address;
420 struct nlm32_alpha_external_reloc ext;
423 int r_type, r_extern, r_offset, r_size;
424 asection *code_sec, *data_sec;
426 /* Read the reloc from the file. */
427 if (bfd_read (&ext, sizeof ext, 1, abfd) != sizeof ext)
429 bfd_error = system_call_error;
433 /* Swap in the reloc information. */
434 r_vaddr = bfd_h_get_64 (abfd, (bfd_byte *) ext.r_vaddr);
435 r_symndx = bfd_h_get_32 (abfd, (bfd_byte *) ext.r_symndx);
437 BFD_ASSERT (abfd->xvec->header_byteorder_big_p == false);
439 r_type = ((ext.r_bits[0] & RELOC_BITS0_TYPE_LITTLE)
440 >> RELOC_BITS0_TYPE_SH_LITTLE);
441 r_extern = (ext.r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0;
442 r_offset = ((ext.r_bits[1] & RELOC_BITS1_OFFSET_LITTLE)
443 >> RELOC_BITS1_OFFSET_SH_LITTLE);
444 /* Ignore the reserved bits. */
445 r_size = ((ext.r_bits[3] & RELOC_BITS3_SIZE_LITTLE)
446 >> RELOC_BITS3_SIZE_SH_LITTLE);
448 /* Fill in the BFD arelent structure. */
449 code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
450 data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
453 /* External relocations are only used for imports. */
454 BFD_ASSERT (sym != NULL);
455 /* We don't need to set sym_ptr_ptr for this case. It is set in
456 nlm_canonicalize_reloc. */
457 rel->sym_ptr_ptr = NULL;
462 /* Internal relocations are only used for local relocation
463 fixups. If they are not NW_RELOC or GPDISP or IGNORE, they
464 must be against .text or .data. */
465 BFD_ASSERT (r_type == ALPHA_R_NW_RELOC || sym == NULL);
466 if (r_type == ALPHA_R_NW_RELOC
467 || r_type == ALPHA_R_GPDISP
468 || r_type == ALPHA_R_IGNORE)
470 rel->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
473 else if (r_symndx == ALPHA_RELOC_SECTION_TEXT)
475 rel->sym_ptr_ptr = code_sec->symbol_ptr_ptr;
476 BFD_ASSERT (bfd_get_section_vma (abfd, code_sec) == 0);
479 else if (r_symndx == ALPHA_RELOC_SECTION_DATA)
481 rel->sym_ptr_ptr = data_sec->symbol_ptr_ptr;
482 rel->addend = - bfd_get_section_vma (abfd, data_sec);
487 rel->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
492 /* We use the address to determine whether the reloc is in the .text
493 or .data section. R_NW_RELOC relocs don't really have a section,
494 so we put them in .text. */
495 if (r_type == ALPHA_R_NW_RELOC
496 || r_vaddr < bfd_section_size (abfd, code_sec))
499 rel->address = r_vaddr;
504 rel->address = r_vaddr - bfd_section_size (abfd, code_sec);
507 /* We must adjust the addend based on the type. */
508 BFD_ASSERT ((r_type >= 0 && r_type <= ALPHA_R_GPVALUE)
509 || r_type == ALPHA_R_NW_RELOC);
517 /* The PC relative relocs do not seem to use the section VMA as
518 a negative addend. */
522 case ALPHA_R_GPREL32:
523 /* Copy the gp value for this object file into the addend, to
524 ensure that we are not confused by the linker. */
526 rel->addend += gp_value;
529 case ALPHA_R_LITERAL:
530 BFD_ASSERT (! r_extern);
531 rel->addend += lita_address;
536 /* The LITUSE and GPDISP relocs do not use a symbol, or an
537 addend, but they do use a special code. Put this code in the
539 rel->addend = r_symndx;
540 rel->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
543 case ALPHA_R_OP_STORE:
544 /* The STORE reloc needs the size and offset fields. We store
545 them in the addend. */
546 BFD_ASSERT (r_offset < 256 && r_size < 256);
547 rel->addend = (r_offset << 8) + r_size;
550 case ALPHA_R_OP_PUSH:
551 case ALPHA_R_OP_PSUB:
552 case ALPHA_R_OP_PRSHIFT:
553 /* The PUSH, PSUB and PRSHIFT relocs do not actually use an
554 address. I believe that the address supplied is really an
556 rel->addend = r_vaddr;
559 case ALPHA_R_GPVALUE:
560 /* Record the new gp value. */
561 gp_value += r_symndx;
562 rel->addend = gp_value;
566 /* If the type is ALPHA_R_IGNORE, make sure this is a reference
567 to the absolute section so that the reloc is ignored. For
568 some reason the address of this reloc type is not adjusted by
569 the section vma. We record the gp value for this object file
570 here, for convenience when doing the GPDISP relocation. */
571 rel->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
572 rel->address = r_vaddr;
573 rel->addend = gp_value;
576 case ALPHA_R_NW_RELOC:
577 /* If this is SETGP, we set the addend to 0. Otherwise we set
578 the addend to the size of the .lita section (this is
579 r_symndx) plus 1. We have already set the address of the
581 if (r_size == ALPHA_R_NW_RELOC_SETGP)
586 else if (r_size == ALPHA_R_NW_RELOC_LITA)
588 lita_address = r_vaddr;
589 rel->addend = r_symndx + 1;
593 rel->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
600 if (r_type == ALPHA_R_NW_RELOC)
601 rel->howto = &nlm32_alpha_nw_howto;
603 rel->howto = &nlm32_alpha_howto_table[r_type];
608 /* Mangle Alpha NLM relocs for output. */
611 nlm_alpha_mangle_relocs (abfd, sec, data, offset, count)
621 /* Read an ALPHA NLM import record */
624 nlm_alpha_read_import (abfd, sym)
626 nlmNAME(symbol_type) *sym;
628 struct nlm_relent *nlm_relocs; /* relocation records for symbol */
629 bfd_size_type rcount; /* number of relocs */
630 bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* temporary 32-bit value */
631 unsigned char symlength; /* length of symbol name */
633 if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd)
634 != sizeof (symlength))
636 bfd_error = system_call_error;
639 sym -> symbol.the_bfd = abfd;
640 sym -> symbol.name = bfd_alloc (abfd, symlength + 1);
641 if (!sym -> symbol.name)
643 bfd_error = no_memory;
646 if (bfd_read ((PTR) sym -> symbol.name, symlength, 1, abfd)
649 bfd_error = system_call_error;
652 sym -> symbol.flags = 0;
653 sym -> symbol.value = 0;
654 sym -> symbol.section = &bfd_und_section;
655 if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp))
657 bfd_error = system_call_error;
660 rcount = bfd_h_get_32 (abfd, temp);
661 nlm_relocs = ((struct nlm_relent *)
662 bfd_alloc (abfd, rcount * sizeof (struct nlm_relent)));
665 bfd_error = no_memory;
668 sym -> relocs = nlm_relocs;
670 while (sym -> rcnt < rcount)
674 if (nlm_alpha_read_reloc (abfd, sym, §ion,
675 &nlm_relocs -> reloc)
678 nlm_relocs -> section = section;
686 /* Write an Alpha NLM reloc. */
689 nlm_alpha_write_import (abfd, sec, rel)
697 int r_type, r_extern, r_offset, r_size;
698 struct nlm32_alpha_external_reloc ext;
700 sym = *rel->sym_ptr_ptr;
702 /* Get values for the relocation fields. */
703 r_type = rel->howto->type;
704 if (r_type != ALPHA_R_NW_RELOC)
706 r_vaddr = bfd_get_section_vma (abfd, sec) + rel->address;
707 if ((sec->flags & SEC_CODE) == 0)
708 r_vaddr += bfd_section_size (abfd,
709 bfd_get_section_by_name (abfd,
711 if (bfd_get_section (sym) == &bfd_und_section)
719 if (bfd_get_section_flags (abfd, bfd_get_section (sym)) & SEC_CODE)
720 r_symndx = ALPHA_RELOC_SECTION_TEXT;
722 r_symndx = ALPHA_RELOC_SECTION_DATA;
731 r_symndx = rel->addend;
734 case ALPHA_R_OP_STORE:
735 r_size = rel->addend & 0xff;
736 r_offset = (rel->addend >> 8) & 0xff;
739 case ALPHA_R_OP_PUSH:
740 case ALPHA_R_OP_PSUB:
741 case ALPHA_R_OP_PRSHIFT:
742 r_vaddr = rel->addend;
746 r_vaddr = rel->address;
755 /* r_type == ALPHA_R_NW_RELOC */
756 r_vaddr = rel->address;
757 if (rel->addend == 0)
760 r_size = ALPHA_R_NW_RELOC_SETGP;
764 r_symndx = rel->addend - 1;
765 r_size = ALPHA_R_NW_RELOC_LITA;
771 /* Swap out the relocation fields. */
772 bfd_h_put_64 (abfd, r_vaddr, (bfd_byte *) ext.r_vaddr);
773 bfd_h_put_32 (abfd, r_symndx, (bfd_byte *) ext.r_symndx);
775 BFD_ASSERT (abfd->xvec->header_byteorder_big_p == false);
777 ext.r_bits[0] = ((r_type << RELOC_BITS0_TYPE_SH_LITTLE)
778 & RELOC_BITS0_TYPE_LITTLE);
779 ext.r_bits[1] = ((r_extern ? RELOC_BITS1_EXTERN_LITTLE : 0)
780 | ((r_offset << RELOC_BITS1_OFFSET_SH_LITTLE)
781 & RELOC_BITS1_OFFSET_LITTLE));
783 ext.r_bits[3] = ((r_size << RELOC_BITS3_SIZE_SH_LITTLE)
784 & RELOC_BITS3_SIZE_LITTLE);
786 /* Write out the relocation. */
787 if (bfd_write (&ext, sizeof ext, 1, abfd) != sizeof ext)
789 bfd_error = system_call_error;
796 /* Alpha NetWare does not use the high bit to determine whether a
797 public symbol is in the code segment or the data segment. Instead,
798 it just uses the address. The set_public_section and
799 get_public_offset routines override the default code which uses the
802 /* Set the section for a public symbol. */
805 nlm_alpha_set_public_section (abfd, sym)
807 nlmNAME(symbol_type) *sym;
809 asection *code_sec, *data_sec;
811 code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME);
812 data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME);
813 if (sym->symbol.value < bfd_section_size (abfd, code_sec))
815 sym->symbol.section = code_sec;
816 sym->symbol.flags |= BSF_FUNCTION;
820 sym->symbol.section = data_sec;
821 sym->symbol.value -= bfd_section_size (abfd, code_sec);
822 /* The data segment had better be aligned. */
823 BFD_ASSERT ((bfd_section_size (abfd, code_sec) & 0xf) == 0);
828 /* Get the offset to write out for a public symbol. */
831 nlm_alpha_get_public_offset (abfd, sym)
835 return bfd_asymbol_value (sym);
838 /* Write an Alpha NLM external symbol. */
841 nlm_alpha_write_external (abfd, count, sym, relocs)
845 struct reloc_and_sec *relocs;
849 unsigned char temp[NLM_TARGET_LONG_SIZE];
852 len = strlen (sym->name);
853 if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof(bfd_byte))
854 || bfd_write (sym->name, len, 1, abfd) != len)
856 bfd_error = system_call_error;
860 bfd_put_32 (abfd, count + 2, temp);
861 if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp))
863 bfd_error = system_call_error;
867 /* The first two relocs for each external symbol are the .lita
868 address and the GP value. */
869 r.sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
870 r.howto = &nlm32_alpha_nw_howto;
872 r.address = nlm_alpha_backend_data (abfd)->lita_address;
873 r.addend = nlm_alpha_backend_data (abfd)->lita_size + 1;
874 if (nlm_alpha_write_import (abfd, (asection *) NULL, &r) == false)
877 r.address = nlm_alpha_backend_data (abfd)->gp;
879 if (nlm_alpha_write_import (abfd, (asection *) NULL, &r) == false)
882 for (i = 0; i < count; i++)
884 if (nlm_alpha_write_import (abfd, relocs[i].sec,
885 relocs[i].rel) == false)
894 static const struct nlm_backend_data nlm32_alpha_backend =
896 "NetWare Alpha Module \032",
897 sizeof (Nlm32_alpha_External_Fixed_Header),
898 sizeof (struct nlm32_alpha_external_prefix_header),
901 true, /* no uninitialized data permitted by Alpha NetWare. */
902 nlm_alpha_backend_object_p,
903 nlm_alpha_write_prefix,
904 nlm_alpha_read_reloc,
905 nlm_alpha_mangle_relocs,
906 nlm_alpha_read_import,
907 nlm_alpha_write_import,
908 nlm_alpha_set_public_section,
909 nlm_alpha_get_public_offset,
910 nlm_swap_fixed_header_in,
911 nlm_swap_fixed_header_out,
912 nlm_alpha_write_external,
913 0, /* write_export */
916 #define TARGET_LITTLE_NAME "nlm32-alpha"
917 #define TARGET_LITTLE_SYM nlmNAME(alpha_vec)
918 #define TARGET_BACKEND_DATA &nlm32_alpha_backend
920 #include "nlm-target.h"