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- /* BFD back-end for ALPHA Extended-Coff files.
- Copyright (C) 1993-2022 Free Software Foundation, Inc.
- Modified from coff-mips.c by Steve Chamberlain <sac@cygnus.com> and
- Ian Lance Taylor <ian@cygnus.com>.
- This file is part of BFD, the Binary File Descriptor library.
- 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. */
- #include "sysdep.h"
- #include "bfd.h"
- #include "bfdlink.h"
- #include "libbfd.h"
- #include "coff/internal.h"
- #include "coff/sym.h"
- #include "coff/symconst.h"
- #include "coff/ecoff.h"
- #include "coff/alpha.h"
- #include "aout/ar.h"
- #include "libcoff.h"
- #include "libecoff.h"
- /* Prototypes for static functions. */
- /* ECOFF has COFF sections, but the debugging information is stored in
- a completely different format. ECOFF targets use some of the
- swapping routines from coffswap.h, and some of the generic COFF
- routines in coffgen.c, but, unlike the real COFF targets, do not
- use coffcode.h itself.
- Get the generic COFF swapping routines, except for the reloc,
- symbol, and lineno ones. Give them ecoff names. Define some
- accessor macros for the large sizes used for Alpha ECOFF. */
- #define GET_FILEHDR_SYMPTR H_GET_64
- #define PUT_FILEHDR_SYMPTR H_PUT_64
- #define GET_AOUTHDR_TSIZE H_GET_64
- #define PUT_AOUTHDR_TSIZE H_PUT_64
- #define GET_AOUTHDR_DSIZE H_GET_64
- #define PUT_AOUTHDR_DSIZE H_PUT_64
- #define GET_AOUTHDR_BSIZE H_GET_64
- #define PUT_AOUTHDR_BSIZE H_PUT_64
- #define GET_AOUTHDR_ENTRY H_GET_64
- #define PUT_AOUTHDR_ENTRY H_PUT_64
- #define GET_AOUTHDR_TEXT_START H_GET_64
- #define PUT_AOUTHDR_TEXT_START H_PUT_64
- #define GET_AOUTHDR_DATA_START H_GET_64
- #define PUT_AOUTHDR_DATA_START H_PUT_64
- #define GET_SCNHDR_PADDR H_GET_64
- #define PUT_SCNHDR_PADDR H_PUT_64
- #define GET_SCNHDR_VADDR H_GET_64
- #define PUT_SCNHDR_VADDR H_PUT_64
- #define GET_SCNHDR_SIZE H_GET_64
- #define PUT_SCNHDR_SIZE H_PUT_64
- #define GET_SCNHDR_SCNPTR H_GET_64
- #define PUT_SCNHDR_SCNPTR H_PUT_64
- #define GET_SCNHDR_RELPTR H_GET_64
- #define PUT_SCNHDR_RELPTR H_PUT_64
- #define GET_SCNHDR_LNNOPTR H_GET_64
- #define PUT_SCNHDR_LNNOPTR H_PUT_64
- #define ALPHAECOFF
- #define NO_COFF_RELOCS
- #define NO_COFF_SYMBOLS
- #define NO_COFF_LINENOS
- #define coff_swap_filehdr_in alpha_ecoff_swap_filehdr_in
- #define coff_swap_filehdr_out alpha_ecoff_swap_filehdr_out
- #define coff_swap_aouthdr_in alpha_ecoff_swap_aouthdr_in
- #define coff_swap_aouthdr_out alpha_ecoff_swap_aouthdr_out
- #define coff_swap_scnhdr_in alpha_ecoff_swap_scnhdr_in
- #define coff_swap_scnhdr_out alpha_ecoff_swap_scnhdr_out
- #include "coffswap.h"
- /* Get the ECOFF swapping routines. */
- #define ECOFF_64
- #include "ecoffswap.h"
- /* How to process the various reloc types. */
- static bfd_reloc_status_type
- reloc_nil (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *reloc ATTRIBUTE_UNUSED,
- asymbol *sym ATTRIBUTE_UNUSED,
- void * data ATTRIBUTE_UNUSED,
- asection *sec ATTRIBUTE_UNUSED,
- bfd *output_bfd ATTRIBUTE_UNUSED,
- char **error_message ATTRIBUTE_UNUSED)
- {
- return bfd_reloc_ok;
- }
- /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
- from smaller values. Start with zero, widen, *then* decrement. */
- #define MINUS_ONE (((bfd_vma)0) - 1)
- static reloc_howto_type alpha_howto_table[] =
- {
- /* Reloc type 0 is ignored by itself. However, it appears after a
- GPDISP reloc to identify the location where the low order 16 bits
- of the gp register are loaded. */
- HOWTO (ALPHA_R_IGNORE, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- reloc_nil, /* special_function */
- "IGNORE", /* name */
- true, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
- /* A 32 bit reference to a symbol. */
- HOWTO (ALPHA_R_REFLONG, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- 0, /* special_function */
- "REFLONG", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 64 bit reference to a symbol. */
- HOWTO (ALPHA_R_REFQUAD, /* type */
- 0, /* rightshift */
- 4, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- 0, /* special_function */
- "REFQUAD", /* name */
- true, /* partial_inplace */
- MINUS_ONE, /* src_mask */
- MINUS_ONE, /* dst_mask */
- false), /* pcrel_offset */
- /* A 32 bit GP relative offset. This is just like REFLONG except
- that when the value is used the value of the gp register will be
- added in. */
- HOWTO (ALPHA_R_GPREL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- 0, /* special_function */
- "GPREL32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Used for an instruction that refers to memory off the GP
- register. The offset is 16 bits of the 32 bit instruction. This
- reloc always seems to be against the .lita section. */
- HOWTO (ALPHA_R_LITERAL, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- 0, /* special_function */
- "LITERAL", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* This reloc only appears immediately following a LITERAL reloc.
- It identifies a use of the literal. It seems that the linker can
- use this to eliminate a portion of the .lita section. The symbol
- index is special: 1 means the literal address is in the base
- register of a memory format instruction; 2 means the literal
- address is in the byte offset register of a byte-manipulation
- instruction; 3 means the literal address is in the target
- register of a jsr instruction. This does not actually do any
- relocation. */
- HOWTO (ALPHA_R_LITUSE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- reloc_nil, /* special_function */
- "LITUSE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* Load the gp register. This is always used for a ldah instruction
- which loads the upper 16 bits of the gp register. The next reloc
- will be an IGNORE reloc which identifies the location of the lda
- instruction which loads the lower 16 bits. The symbol index of
- the GPDISP instruction appears to actually be the number of bytes
- between the ldah and lda instructions. This gives two different
- ways to determine where the lda instruction is; I don't know why
- both are used. The value to use for the relocation is the
- difference between the GP value and the current location; the
- load will always be done against a register holding the current
- address. */
- HOWTO (ALPHA_R_GPDISP, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- reloc_nil, /* special_function */
- "GPDISP", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- true), /* pcrel_offset */
- /* A 21 bit branch. The native assembler generates these for
- branches within the text segment, and also fills in the PC
- relative offset in the instruction. */
- HOWTO (ALPHA_R_BRADDR, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- 0, /* special_function */
- "BRADDR", /* name */
- true, /* partial_inplace */
- 0x1fffff, /* src_mask */
- 0x1fffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A hint for a jump to a register. */
- HOWTO (ALPHA_R_HINT, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 14, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- 0, /* special_function */
- "HINT", /* name */
- true, /* partial_inplace */
- 0x3fff, /* src_mask */
- 0x3fff, /* dst_mask */
- false), /* pcrel_offset */
- /* 16 bit PC relative offset. */
- HOWTO (ALPHA_R_SREL16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- 0, /* special_function */
- "SREL16", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* 32 bit PC relative offset. */
- HOWTO (ALPHA_R_SREL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- 0, /* special_function */
- "SREL32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 64 bit PC relative offset. */
- HOWTO (ALPHA_R_SREL64, /* type */
- 0, /* rightshift */
- 4, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- 0, /* special_function */
- "SREL64", /* name */
- true, /* partial_inplace */
- MINUS_ONE, /* src_mask */
- MINUS_ONE, /* dst_mask */
- false), /* pcrel_offset */
- /* Push a value on the reloc evaluation stack. */
- HOWTO (ALPHA_R_OP_PUSH, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- 0, /* special_function */
- "OP_PUSH", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* Store the value from the stack at the given address. Store it in
- a bitfield of size r_size starting at bit position r_offset. */
- HOWTO (ALPHA_R_OP_STORE, /* type */
- 0, /* rightshift */
- 4, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- 0, /* special_function */
- "OP_STORE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- MINUS_ONE, /* dst_mask */
- false), /* pcrel_offset */
- /* Subtract the reloc address from the value on the top of the
- relocation stack. */
- HOWTO (ALPHA_R_OP_PSUB, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- 0, /* special_function */
- "OP_PSUB", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* Shift the value on the top of the relocation stack right by the
- given value. */
- HOWTO (ALPHA_R_OP_PRSHIFT, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- 0, /* special_function */
- "OP_PRSHIFT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* Adjust the GP value for a new range in the object file. */
- HOWTO (ALPHA_R_GPVALUE, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- 0, /* special_function */
- "GPVALUE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false) /* pcrel_offset */
- };
- /* Recognize an Alpha ECOFF file. */
- static bfd_cleanup
- alpha_ecoff_object_p (bfd *abfd)
- {
- bfd_cleanup ret;
- ret = coff_object_p (abfd);
- if (ret != NULL)
- {
- asection *sec;
- /* Alpha ECOFF has a .pdata section. The lnnoptr field of the
- .pdata section is the number of entries it contains. Each
- entry takes up 8 bytes. The number of entries is required
- since the section is aligned to a 16 byte boundary. When we
- link .pdata sections together, we do not want to include the
- alignment bytes. We handle this on input by faking the size
- of the .pdata section to remove the unwanted alignment bytes.
- On output we will set the lnnoptr field and force the
- alignment. */
- sec = bfd_get_section_by_name (abfd, _PDATA);
- if (sec != (asection *) NULL)
- {
- bfd_size_type size;
- size = (bfd_size_type) sec->line_filepos * 8;
- BFD_ASSERT (size == sec->size
- || size + 8 == sec->size);
- if (!bfd_set_section_size (sec, size))
- return NULL;
- }
- }
- return ret;
- }
- /* See whether the magic number matches. */
- static bool
- alpha_ecoff_bad_format_hook (bfd *abfd ATTRIBUTE_UNUSED,
- void * filehdr)
- {
- struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
- if (! ALPHA_ECOFF_BADMAG (*internal_f))
- return true;
- if (ALPHA_ECOFF_COMPRESSEDMAG (*internal_f))
- _bfd_error_handler
- (_("%pB: cannot handle compressed Alpha binaries; "
- "use compiler flags, or objZ, to generate uncompressed binaries"),
- abfd);
- return false;
- }
- /* This is a hook called by coff_real_object_p to create any backend
- specific information. */
- static void *
- alpha_ecoff_mkobject_hook (bfd *abfd, void * filehdr, void * aouthdr)
- {
- void * ecoff;
- ecoff = _bfd_ecoff_mkobject_hook (abfd, filehdr, aouthdr);
- if (ecoff != NULL)
- {
- struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
- /* Set additional BFD flags according to the object type from the
- machine specific file header flags. */
- switch (internal_f->f_flags & F_ALPHA_OBJECT_TYPE_MASK)
- {
- case F_ALPHA_SHARABLE:
- abfd->flags |= DYNAMIC;
- break;
- case F_ALPHA_CALL_SHARED:
- /* Always executable if using shared libraries as the run time
- loader might resolve undefined references. */
- abfd->flags |= (DYNAMIC | EXEC_P);
- break;
- }
- }
- return ecoff;
- }
- /* Reloc handling. */
- /* Swap a reloc in. */
- static void
- alpha_ecoff_swap_reloc_in (bfd *abfd,
- void * ext_ptr,
- struct internal_reloc *intern)
- {
- const RELOC *ext = (RELOC *) ext_ptr;
- intern->r_vaddr = H_GET_64 (abfd, ext->r_vaddr);
- intern->r_symndx = H_GET_32 (abfd, ext->r_symndx);
- BFD_ASSERT (bfd_header_little_endian (abfd));
- intern->r_type = ((ext->r_bits[0] & RELOC_BITS0_TYPE_LITTLE)
- >> RELOC_BITS0_TYPE_SH_LITTLE);
- intern->r_extern = (ext->r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0;
- intern->r_offset = ((ext->r_bits[1] & RELOC_BITS1_OFFSET_LITTLE)
- >> RELOC_BITS1_OFFSET_SH_LITTLE);
- /* Ignored the reserved bits. */
- intern->r_size = ((ext->r_bits[3] & RELOC_BITS3_SIZE_LITTLE)
- >> RELOC_BITS3_SIZE_SH_LITTLE);
- if (intern->r_type == ALPHA_R_LITUSE
- || intern->r_type == ALPHA_R_GPDISP)
- {
- /* Handle the LITUSE and GPDISP relocs specially. Its symndx
- value is not actually a symbol index, but is instead a
- special code. We put the code in the r_size field, and
- clobber the symndx. */
- if (intern->r_size != 0)
- abort ();
- intern->r_size = intern->r_symndx;
- intern->r_symndx = RELOC_SECTION_NONE;
- }
- else if (intern->r_type == ALPHA_R_IGNORE)
- {
- /* The IGNORE reloc generally follows a GPDISP reloc, and is
- against the .lita section. The section is irrelevant. */
- if (! intern->r_extern &&
- intern->r_symndx == RELOC_SECTION_ABS)
- abort ();
- if (! intern->r_extern && intern->r_symndx == RELOC_SECTION_LITA)
- intern->r_symndx = RELOC_SECTION_ABS;
- }
- }
- /* Swap a reloc out. */
- static void
- alpha_ecoff_swap_reloc_out (bfd *abfd,
- const struct internal_reloc *intern,
- void * dst)
- {
- RELOC *ext = (RELOC *) dst;
- long symndx;
- unsigned char size;
- /* Undo the hackery done in swap_reloc_in. */
- if (intern->r_type == ALPHA_R_LITUSE
- || intern->r_type == ALPHA_R_GPDISP)
- {
- symndx = intern->r_size;
- size = 0;
- }
- else if (intern->r_type == ALPHA_R_IGNORE
- && ! intern->r_extern
- && intern->r_symndx == RELOC_SECTION_ABS)
- {
- symndx = RELOC_SECTION_LITA;
- size = intern->r_size;
- }
- else
- {
- symndx = intern->r_symndx;
- size = intern->r_size;
- }
- /* XXX FIXME: The maximum symndx value used to be 14 but this
- fails with object files produced by DEC's C++ compiler.
- Where does the value 14 (or 15) come from anyway ? */
- BFD_ASSERT (intern->r_extern
- || (intern->r_symndx >= 0 && intern->r_symndx <= 15));
- H_PUT_64 (abfd, intern->r_vaddr, ext->r_vaddr);
- H_PUT_32 (abfd, symndx, ext->r_symndx);
- BFD_ASSERT (bfd_header_little_endian (abfd));
- ext->r_bits[0] = ((intern->r_type << RELOC_BITS0_TYPE_SH_LITTLE)
- & RELOC_BITS0_TYPE_LITTLE);
- ext->r_bits[1] = ((intern->r_extern ? RELOC_BITS1_EXTERN_LITTLE : 0)
- | ((intern->r_offset << RELOC_BITS1_OFFSET_SH_LITTLE)
- & RELOC_BITS1_OFFSET_LITTLE));
- ext->r_bits[2] = 0;
- ext->r_bits[3] = ((size << RELOC_BITS3_SIZE_SH_LITTLE)
- & RELOC_BITS3_SIZE_LITTLE);
- }
- /* Finish canonicalizing a reloc. Part of this is generic to all
- ECOFF targets, and that part is in ecoff.c. The rest is done in
- this backend routine. It must fill in the howto field. */
- static void
- alpha_adjust_reloc_in (bfd *abfd,
- const struct internal_reloc *intern,
- arelent *rptr)
- {
- if (intern->r_type > ALPHA_R_GPVALUE)
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- abfd, intern->r_type);
- bfd_set_error (bfd_error_bad_value);
- rptr->addend = 0;
- rptr->howto = NULL;
- return;
- }
- switch (intern->r_type)
- {
- case ALPHA_R_BRADDR:
- case ALPHA_R_SREL16:
- case ALPHA_R_SREL32:
- case ALPHA_R_SREL64:
- /* This relocs appear to be fully resolved when they are against
- internal symbols. Against external symbols, BRADDR at least
- appears to be resolved against the next instruction. */
- if (! intern->r_extern)
- rptr->addend = 0;
- else
- rptr->addend = - (intern->r_vaddr + 4);
- break;
- case ALPHA_R_GPREL32:
- case ALPHA_R_LITERAL:
- /* Copy the gp value for this object file into the addend, to
- ensure that we are not confused by the linker. */
- if (! intern->r_extern)
- rptr->addend += ecoff_data (abfd)->gp;
- break;
- case ALPHA_R_LITUSE:
- case ALPHA_R_GPDISP:
- /* The LITUSE and GPDISP relocs do not use a symbol, or an
- addend, but they do use a special code. Put this code in the
- addend field. */
- rptr->addend = intern->r_size;
- break;
- case ALPHA_R_OP_STORE:
- /* The STORE reloc needs the size and offset fields. We store
- them in the addend. */
- BFD_ASSERT (intern->r_offset <= 256);
- rptr->addend = (intern->r_offset << 8) + intern->r_size;
- break;
- case ALPHA_R_OP_PUSH:
- case ALPHA_R_OP_PSUB:
- case ALPHA_R_OP_PRSHIFT:
- /* The PUSH, PSUB and PRSHIFT relocs do not actually use an
- address. I believe that the address supplied is really an
- addend. */
- rptr->addend = intern->r_vaddr;
- break;
- case ALPHA_R_GPVALUE:
- /* Set the addend field to the new GP value. */
- rptr->addend = intern->r_symndx + ecoff_data (abfd)->gp;
- break;
- case ALPHA_R_IGNORE:
- /* If the type is ALPHA_R_IGNORE, make sure this is a reference
- to the absolute section so that the reloc is ignored. For
- some reason the address of this reloc type is not adjusted by
- the section vma. We record the gp value for this object file
- here, for convenience when doing the GPDISP relocation. */
- rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
- rptr->address = intern->r_vaddr;
- rptr->addend = ecoff_data (abfd)->gp;
- break;
- default:
- break;
- }
- rptr->howto = &alpha_howto_table[intern->r_type];
- }
- /* When writing out a reloc we need to pull some values back out of
- the addend field into the reloc. This is roughly the reverse of
- alpha_adjust_reloc_in, except that there are several changes we do
- not need to undo. */
- static void
- alpha_adjust_reloc_out (bfd *abfd ATTRIBUTE_UNUSED,
- const arelent *rel,
- struct internal_reloc *intern)
- {
- switch (intern->r_type)
- {
- case ALPHA_R_LITUSE:
- case ALPHA_R_GPDISP:
- intern->r_size = rel->addend;
- break;
- case ALPHA_R_OP_STORE:
- intern->r_size = rel->addend & 0xff;
- intern->r_offset = (rel->addend >> 8) & 0xff;
- break;
- case ALPHA_R_OP_PUSH:
- case ALPHA_R_OP_PSUB:
- case ALPHA_R_OP_PRSHIFT:
- intern->r_vaddr = rel->addend;
- break;
- case ALPHA_R_IGNORE:
- intern->r_vaddr = rel->address;
- break;
- default:
- break;
- }
- }
- /* The size of the stack for the relocation evaluator. */
- #define RELOC_STACKSIZE (10)
- /* Alpha ECOFF relocs have a built in expression evaluator as well as
- other interdependencies. Rather than use a bunch of special
- functions and global variables, we use a single routine to do all
- the relocation for a section. I haven't yet worked out how the
- assembler is going to handle this. */
- static bfd_byte *
- alpha_ecoff_get_relocated_section_contents (bfd *abfd,
- struct bfd_link_info *link_info,
- struct bfd_link_order *link_order,
- bfd_byte *data,
- bool relocatable,
- asymbol **symbols)
- {
- bfd *input_bfd = link_order->u.indirect.section->owner;
- asection *input_section = link_order->u.indirect.section;
- long reloc_size;
- arelent **reloc_vector;
- long reloc_count;
- bfd *output_bfd = relocatable ? abfd : (bfd *) NULL;
- bfd_vma gp;
- bool gp_undefined;
- bfd_vma stack[RELOC_STACKSIZE];
- int tos = 0;
- reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
- if (reloc_size < 0)
- return NULL;
- if (!bfd_get_full_section_contents (input_bfd, input_section, &data))
- return NULL;
- if (data == NULL)
- return NULL;
- if (reloc_size == 0)
- return data;
- reloc_vector = (arelent **) bfd_malloc (reloc_size);
- if (reloc_vector == NULL)
- return NULL;
- reloc_count = bfd_canonicalize_reloc (input_bfd, input_section,
- reloc_vector, symbols);
- if (reloc_count < 0)
- goto error_return;
- if (reloc_count == 0)
- goto successful_return;
- /* Get the GP value for the output BFD. */
- gp_undefined = false;
- gp = _bfd_get_gp_value (abfd);
- if (gp == 0)
- {
- if (relocatable)
- {
- asection *sec;
- bfd_vma lo;
- /* Make up a value. */
- lo = (bfd_vma) -1;
- for (sec = abfd->sections; sec != NULL; sec = sec->next)
- {
- if (sec->vma < lo
- && (strcmp (sec->name, ".sbss") == 0
- || strcmp (sec->name, ".sdata") == 0
- || strcmp (sec->name, ".lit4") == 0
- || strcmp (sec->name, ".lit8") == 0
- || strcmp (sec->name, ".lita") == 0))
- lo = sec->vma;
- }
- gp = lo + 0x8000;
- _bfd_set_gp_value (abfd, gp);
- }
- else
- {
- struct bfd_link_hash_entry *h;
- h = bfd_link_hash_lookup (link_info->hash, "_gp", false, false,
- true);
- if (h == (struct bfd_link_hash_entry *) NULL
- || h->type != bfd_link_hash_defined)
- gp_undefined = true;
- else
- {
- gp = (h->u.def.value
- + h->u.def.section->output_section->vma
- + h->u.def.section->output_offset);
- _bfd_set_gp_value (abfd, gp);
- }
- }
- }
- for (; *reloc_vector != (arelent *) NULL; reloc_vector++)
- {
- arelent *rel;
- bfd_reloc_status_type r;
- char *err;
- rel = *reloc_vector;
- r = bfd_reloc_ok;
- switch (rel->howto->type)
- {
- case ALPHA_R_IGNORE:
- rel->address += input_section->output_offset;
- break;
- case ALPHA_R_REFLONG:
- case ALPHA_R_REFQUAD:
- case ALPHA_R_BRADDR:
- case ALPHA_R_HINT:
- case ALPHA_R_SREL16:
- case ALPHA_R_SREL32:
- case ALPHA_R_SREL64:
- if (relocatable
- && ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0)
- {
- rel->address += input_section->output_offset;
- break;
- }
- r = bfd_perform_relocation (input_bfd, rel, data, input_section,
- output_bfd, &err);
- break;
- case ALPHA_R_GPREL32:
- /* This relocation is used in a switch table. It is a 32
- bit offset from the current GP value. We must adjust it
- by the different between the original GP value and the
- current GP value. The original GP value is stored in the
- addend. We adjust the addend and let
- bfd_perform_relocation finish the job. */
- rel->addend -= gp;
- r = bfd_perform_relocation (input_bfd, rel, data, input_section,
- output_bfd, &err);
- if (r == bfd_reloc_ok && gp_undefined)
- {
- r = bfd_reloc_dangerous;
- err = (char *) _("GP relative relocation used when GP not defined");
- }
- break;
- case ALPHA_R_LITERAL:
- /* This is a reference to a literal value, generally
- (always?) in the .lita section. This is a 16 bit GP
- relative relocation. Sometimes the subsequent reloc is a
- LITUSE reloc, which indicates how this reloc is used.
- This sometimes permits rewriting the two instructions
- referred to by the LITERAL and the LITUSE into different
- instructions which do not refer to .lita. This can save
- a memory reference, and permits removing a value from
- .lita thus saving GP relative space.
- We do not these optimizations. To do them we would need
- to arrange to link the .lita section first, so that by
- the time we got here we would know the final values to
- use. This would not be particularly difficult, but it is
- not currently implemented. */
- {
- unsigned long insn;
- /* I believe that the LITERAL reloc will only apply to a
- ldq or ldl instruction, so check my assumption. */
- insn = bfd_get_32 (input_bfd, data + rel->address);
- BFD_ASSERT (((insn >> 26) & 0x3f) == 0x29
- || ((insn >> 26) & 0x3f) == 0x28);
- rel->addend -= gp;
- r = bfd_perform_relocation (input_bfd, rel, data, input_section,
- output_bfd, &err);
- if (r == bfd_reloc_ok && gp_undefined)
- {
- r = bfd_reloc_dangerous;
- err =
- (char *) _("GP relative relocation used when GP not defined");
- }
- }
- break;
- case ALPHA_R_LITUSE:
- /* See ALPHA_R_LITERAL above for the uses of this reloc. It
- does not cause anything to happen, itself. */
- rel->address += input_section->output_offset;
- break;
- case ALPHA_R_GPDISP:
- /* This marks the ldah of an ldah/lda pair which loads the
- gp register with the difference of the gp value and the
- current location. The second of the pair is r_size bytes
- ahead; it used to be marked with an ALPHA_R_IGNORE reloc,
- but that no longer happens in OSF/1 3.2. */
- {
- unsigned long insn1, insn2;
- bfd_vma addend;
- /* Get the two instructions. */
- insn1 = bfd_get_32 (input_bfd, data + rel->address);
- insn2 = bfd_get_32 (input_bfd, data + rel->address + rel->addend);
- BFD_ASSERT (((insn1 >> 26) & 0x3f) == 0x09); /* ldah */
- BFD_ASSERT (((insn2 >> 26) & 0x3f) == 0x08); /* lda */
- /* Get the existing addend. We must account for the sign
- extension done by lda and ldah. */
- addend = ((insn1 & 0xffff) << 16) + (insn2 & 0xffff);
- if (insn1 & 0x8000)
- {
- addend -= 0x80000000;
- addend -= 0x80000000;
- }
- if (insn2 & 0x8000)
- addend -= 0x10000;
- /* The existing addend includes the different between the
- gp of the input BFD and the address in the input BFD.
- Subtract this out. */
- addend -= (ecoff_data (input_bfd)->gp
- - (input_section->vma + rel->address));
- /* Now add in the final gp value, and subtract out the
- final address. */
- addend += (gp
- - (input_section->output_section->vma
- + input_section->output_offset
- + rel->address));
- /* Change the instructions, accounting for the sign
- extension, and write them out. */
- if (addend & 0x8000)
- addend += 0x10000;
- insn1 = (insn1 & 0xffff0000) | ((addend >> 16) & 0xffff);
- insn2 = (insn2 & 0xffff0000) | (addend & 0xffff);
- bfd_put_32 (input_bfd, (bfd_vma) insn1, data + rel->address);
- bfd_put_32 (input_bfd, (bfd_vma) insn2,
- data + rel->address + rel->addend);
- rel->address += input_section->output_offset;
- }
- break;
- case ALPHA_R_OP_PUSH:
- /* Push a value on the reloc evaluation stack. */
- {
- asymbol *symbol;
- bfd_vma relocation;
- if (relocatable)
- {
- rel->address += input_section->output_offset;
- break;
- }
- /* Figure out the relocation of this symbol. */
- symbol = *rel->sym_ptr_ptr;
- if (bfd_is_und_section (symbol->section))
- r = bfd_reloc_undefined;
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- relocation += rel->addend;
- if (tos >= RELOC_STACKSIZE)
- abort ();
- stack[tos++] = relocation;
- }
- break;
- case ALPHA_R_OP_STORE:
- /* Store a value from the reloc stack into a bitfield. */
- {
- bfd_vma val;
- int offset, size;
- if (relocatable)
- {
- rel->address += input_section->output_offset;
- break;
- }
- if (tos == 0)
- abort ();
- /* The offset and size for this reloc are encoded into the
- addend field by alpha_adjust_reloc_in. */
- offset = (rel->addend >> 8) & 0xff;
- size = rel->addend & 0xff;
- val = bfd_get_64 (abfd, data + rel->address);
- val &=~ (((1 << size) - 1) << offset);
- val |= (stack[--tos] & ((1 << size) - 1)) << offset;
- bfd_put_64 (abfd, val, data + rel->address);
- }
- break;
- case ALPHA_R_OP_PSUB:
- /* Subtract a value from the top of the stack. */
- {
- asymbol *symbol;
- bfd_vma relocation;
- if (relocatable)
- {
- rel->address += input_section->output_offset;
- break;
- }
- /* Figure out the relocation of this symbol. */
- symbol = *rel->sym_ptr_ptr;
- if (bfd_is_und_section (symbol->section))
- r = bfd_reloc_undefined;
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- relocation += rel->addend;
- if (tos == 0)
- abort ();
- stack[tos - 1] -= relocation;
- }
- break;
- case ALPHA_R_OP_PRSHIFT:
- /* Shift the value on the top of the stack. */
- {
- asymbol *symbol;
- bfd_vma relocation;
- if (relocatable)
- {
- rel->address += input_section->output_offset;
- break;
- }
- /* Figure out the relocation of this symbol. */
- symbol = *rel->sym_ptr_ptr;
- if (bfd_is_und_section (symbol->section))
- r = bfd_reloc_undefined;
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- relocation += rel->addend;
- if (tos == 0)
- abort ();
- stack[tos - 1] >>= relocation;
- }
- break;
- case ALPHA_R_GPVALUE:
- /* I really don't know if this does the right thing. */
- gp = rel->addend;
- gp_undefined = false;
- break;
- default:
- abort ();
- }
- if (relocatable)
- {
- asection *os = input_section->output_section;
- /* A partial link, so keep the relocs. */
- os->orelocation[os->reloc_count] = rel;
- os->reloc_count++;
- }
- if (r != bfd_reloc_ok)
- {
- switch (r)
- {
- case bfd_reloc_undefined:
- (*link_info->callbacks->undefined_symbol)
- (link_info, bfd_asymbol_name (*rel->sym_ptr_ptr),
- input_bfd, input_section, rel->address, true);
- break;
- case bfd_reloc_dangerous:
- (*link_info->callbacks->reloc_dangerous)
- (link_info, err, input_bfd, input_section, rel->address);
- break;
- case bfd_reloc_overflow:
- (*link_info->callbacks->reloc_overflow)
- (link_info, NULL, bfd_asymbol_name (*rel->sym_ptr_ptr),
- rel->howto->name, rel->addend, input_bfd,
- input_section, rel->address);
- break;
- case bfd_reloc_outofrange:
- default:
- abort ();
- break;
- }
- }
- }
- if (tos != 0)
- abort ();
- successful_return:
- free (reloc_vector);
- return data;
- error_return:
- free (reloc_vector);
- return NULL;
- }
- /* Get the howto structure for a generic reloc type. */
- static reloc_howto_type *
- alpha_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
- {
- int alpha_type;
- switch (code)
- {
- case BFD_RELOC_32:
- alpha_type = ALPHA_R_REFLONG;
- break;
- case BFD_RELOC_64:
- case BFD_RELOC_CTOR:
- alpha_type = ALPHA_R_REFQUAD;
- break;
- case BFD_RELOC_GPREL32:
- alpha_type = ALPHA_R_GPREL32;
- break;
- case BFD_RELOC_ALPHA_LITERAL:
- alpha_type = ALPHA_R_LITERAL;
- break;
- case BFD_RELOC_ALPHA_LITUSE:
- alpha_type = ALPHA_R_LITUSE;
- break;
- case BFD_RELOC_ALPHA_GPDISP_HI16:
- alpha_type = ALPHA_R_GPDISP;
- break;
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- alpha_type = ALPHA_R_IGNORE;
- break;
- case BFD_RELOC_23_PCREL_S2:
- alpha_type = ALPHA_R_BRADDR;
- break;
- case BFD_RELOC_ALPHA_HINT:
- alpha_type = ALPHA_R_HINT;
- break;
- case BFD_RELOC_16_PCREL:
- alpha_type = ALPHA_R_SREL16;
- break;
- case BFD_RELOC_32_PCREL:
- alpha_type = ALPHA_R_SREL32;
- break;
- case BFD_RELOC_64_PCREL:
- alpha_type = ALPHA_R_SREL64;
- break;
- default:
- return (reloc_howto_type *) NULL;
- }
- return &alpha_howto_table[alpha_type];
- }
- static reloc_howto_type *
- alpha_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0;
- i < sizeof (alpha_howto_table) / sizeof (alpha_howto_table[0]);
- i++)
- if (alpha_howto_table[i].name != NULL
- && strcasecmp (alpha_howto_table[i].name, r_name) == 0)
- return &alpha_howto_table[i];
- return NULL;
- }
- /* A helper routine for alpha_relocate_section which converts an
- external reloc when generating relocatable output. Returns the
- relocation amount. */
- static bfd_vma
- alpha_convert_external_reloc (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info,
- bfd *input_bfd,
- struct external_reloc *ext_rel,
- struct ecoff_link_hash_entry *h)
- {
- unsigned long r_symndx;
- bfd_vma relocation;
- BFD_ASSERT (bfd_link_relocatable (info));
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *hsec;
- const char *name;
- /* This symbol is defined in the output. Convert the reloc from
- being against the symbol to being against the section. */
- /* Clear the r_extern bit. */
- ext_rel->r_bits[1] &=~ RELOC_BITS1_EXTERN_LITTLE;
- /* Compute a new r_symndx value. */
- hsec = h->root.u.def.section;
- name = bfd_section_name (hsec->output_section);
- r_symndx = (unsigned long) -1;
- switch (name[1])
- {
- case 'A':
- if (strcmp (name, "*ABS*") == 0)
- r_symndx = RELOC_SECTION_ABS;
- break;
- case 'b':
- if (strcmp (name, ".bss") == 0)
- r_symndx = RELOC_SECTION_BSS;
- break;
- case 'd':
- if (strcmp (name, ".data") == 0)
- r_symndx = RELOC_SECTION_DATA;
- break;
- case 'f':
- if (strcmp (name, ".fini") == 0)
- r_symndx = RELOC_SECTION_FINI;
- break;
- case 'i':
- if (strcmp (name, ".init") == 0)
- r_symndx = RELOC_SECTION_INIT;
- break;
- case 'l':
- if (strcmp (name, ".lita") == 0)
- r_symndx = RELOC_SECTION_LITA;
- else if (strcmp (name, ".lit8") == 0)
- r_symndx = RELOC_SECTION_LIT8;
- else if (strcmp (name, ".lit4") == 0)
- r_symndx = RELOC_SECTION_LIT4;
- break;
- case 'p':
- if (strcmp (name, ".pdata") == 0)
- r_symndx = RELOC_SECTION_PDATA;
- break;
- case 'r':
- if (strcmp (name, ".rdata") == 0)
- r_symndx = RELOC_SECTION_RDATA;
- else if (strcmp (name, ".rconst") == 0)
- r_symndx = RELOC_SECTION_RCONST;
- break;
- case 's':
- if (strcmp (name, ".sdata") == 0)
- r_symndx = RELOC_SECTION_SDATA;
- else if (strcmp (name, ".sbss") == 0)
- r_symndx = RELOC_SECTION_SBSS;
- break;
- case 't':
- if (strcmp (name, ".text") == 0)
- r_symndx = RELOC_SECTION_TEXT;
- break;
- case 'x':
- if (strcmp (name, ".xdata") == 0)
- r_symndx = RELOC_SECTION_XDATA;
- break;
- }
- if (r_symndx == (unsigned long) -1)
- abort ();
- /* Add the section VMA and the symbol value. */
- relocation = (h->root.u.def.value
- + hsec->output_section->vma
- + hsec->output_offset);
- }
- else
- {
- /* Change the symndx value to the right one for
- the output BFD. */
- r_symndx = h->indx;
- if (r_symndx == (unsigned long) -1)
- {
- /* Caller must give an error. */
- r_symndx = 0;
- }
- relocation = 0;
- }
- /* Write out the new r_symndx value. */
- H_PUT_32 (input_bfd, r_symndx, ext_rel->r_symndx);
- return relocation;
- }
- /* Relocate a section while linking an Alpha ECOFF file. This is
- quite similar to get_relocated_section_contents. Perhaps they
- could be combined somehow. */
- static bool
- alpha_relocate_section (bfd *output_bfd,
- struct bfd_link_info *info,
- bfd *input_bfd,
- asection *input_section,
- bfd_byte *contents,
- void * external_relocs)
- {
- asection **symndx_to_section, *lita_sec;
- struct ecoff_link_hash_entry **sym_hashes;
- bfd_vma gp;
- bool gp_undefined;
- bfd_vma stack[RELOC_STACKSIZE];
- int tos = 0;
- struct external_reloc *ext_rel;
- struct external_reloc *ext_rel_end;
- bfd_size_type amt;
- /* We keep a table mapping the symndx found in an internal reloc to
- the appropriate section. This is faster than looking up the
- section by name each time. */
- symndx_to_section = ecoff_data (input_bfd)->symndx_to_section;
- if (symndx_to_section == (asection **) NULL)
- {
- amt = NUM_RELOC_SECTIONS * sizeof (asection *);
- symndx_to_section = (asection **) bfd_alloc (input_bfd, amt);
- if (!symndx_to_section)
- return false;
- symndx_to_section[RELOC_SECTION_NONE] = NULL;
- symndx_to_section[RELOC_SECTION_TEXT] =
- bfd_get_section_by_name (input_bfd, ".text");
- symndx_to_section[RELOC_SECTION_RDATA] =
- bfd_get_section_by_name (input_bfd, ".rdata");
- symndx_to_section[RELOC_SECTION_DATA] =
- bfd_get_section_by_name (input_bfd, ".data");
- symndx_to_section[RELOC_SECTION_SDATA] =
- bfd_get_section_by_name (input_bfd, ".sdata");
- symndx_to_section[RELOC_SECTION_SBSS] =
- bfd_get_section_by_name (input_bfd, ".sbss");
- symndx_to_section[RELOC_SECTION_BSS] =
- bfd_get_section_by_name (input_bfd, ".bss");
- symndx_to_section[RELOC_SECTION_INIT] =
- bfd_get_section_by_name (input_bfd, ".init");
- symndx_to_section[RELOC_SECTION_LIT8] =
- bfd_get_section_by_name (input_bfd, ".lit8");
- symndx_to_section[RELOC_SECTION_LIT4] =
- bfd_get_section_by_name (input_bfd, ".lit4");
- symndx_to_section[RELOC_SECTION_XDATA] =
- bfd_get_section_by_name (input_bfd, ".xdata");
- symndx_to_section[RELOC_SECTION_PDATA] =
- bfd_get_section_by_name (input_bfd, ".pdata");
- symndx_to_section[RELOC_SECTION_FINI] =
- bfd_get_section_by_name (input_bfd, ".fini");
- symndx_to_section[RELOC_SECTION_LITA] =
- bfd_get_section_by_name (input_bfd, ".lita");
- symndx_to_section[RELOC_SECTION_ABS] = bfd_abs_section_ptr;
- symndx_to_section[RELOC_SECTION_RCONST] =
- bfd_get_section_by_name (input_bfd, ".rconst");
- ecoff_data (input_bfd)->symndx_to_section = symndx_to_section;
- }
- sym_hashes = ecoff_data (input_bfd)->sym_hashes;
- /* On the Alpha, the .lita section must be addressable by the global
- pointer. To support large programs, we need to allow multiple
- global pointers. This works as long as each input .lita section
- is <64KB big. This implies that when producing relocatable
- output, the .lita section is limited to 64KB. . */
- lita_sec = symndx_to_section[RELOC_SECTION_LITA];
- gp = _bfd_get_gp_value (output_bfd);
- if (! bfd_link_relocatable (info) && lita_sec != NULL)
- {
- struct ecoff_section_tdata *lita_sec_data;
- /* Make sure we have a section data structure to which we can
- hang on to the gp value we pick for the section. */
- lita_sec_data = ecoff_section_data (input_bfd, lita_sec);
- if (lita_sec_data == NULL)
- {
- amt = sizeof (struct ecoff_section_tdata);
- lita_sec_data = ((struct ecoff_section_tdata *)
- bfd_zalloc (input_bfd, amt));
- lita_sec->used_by_bfd = lita_sec_data;
- }
- if (lita_sec_data->gp != 0)
- {
- /* If we already assigned a gp to this section, we better
- stick with that value. */
- gp = lita_sec_data->gp;
- }
- else
- {
- bfd_vma lita_vma;
- bfd_size_type lita_size;
- lita_vma = lita_sec->output_offset + lita_sec->output_section->vma;
- lita_size = lita_sec->size;
- if (gp == 0
- || lita_vma < gp - 0x8000
- || lita_vma + lita_size >= gp + 0x8000)
- {
- /* Either gp hasn't been set at all or the current gp
- cannot address this .lita section. In both cases we
- reset the gp to point into the "middle" of the
- current input .lita section. */
- if (gp && !ecoff_data (output_bfd)->issued_multiple_gp_warning)
- {
- (*info->callbacks->warning) (info,
- _("using multiple gp values"),
- (char *) NULL, output_bfd,
- (asection *) NULL, (bfd_vma) 0);
- ecoff_data (output_bfd)->issued_multiple_gp_warning = true;
- }
- if (lita_vma < gp - 0x8000)
- gp = lita_vma + lita_size - 0x8000;
- else
- gp = lita_vma + 0x8000;
- }
- lita_sec_data->gp = gp;
- }
- _bfd_set_gp_value (output_bfd, gp);
- }
- gp_undefined = (gp == 0);
- BFD_ASSERT (bfd_header_little_endian (output_bfd));
- BFD_ASSERT (bfd_header_little_endian (input_bfd));
- ext_rel = (struct external_reloc *) external_relocs;
- ext_rel_end = ext_rel + input_section->reloc_count;
- for (; ext_rel < ext_rel_end; ext_rel++)
- {
- bfd_vma r_vaddr;
- unsigned long r_symndx;
- int r_type;
- int r_extern;
- int r_offset;
- int r_size;
- bool relocatep;
- bool adjust_addrp;
- bool gp_usedp;
- bfd_vma addend;
- r_vaddr = H_GET_64 (input_bfd, ext_rel->r_vaddr);
- r_symndx = H_GET_32 (input_bfd, ext_rel->r_symndx);
- r_type = ((ext_rel->r_bits[0] & RELOC_BITS0_TYPE_LITTLE)
- >> RELOC_BITS0_TYPE_SH_LITTLE);
- r_extern = (ext_rel->r_bits[1] & RELOC_BITS1_EXTERN_LITTLE) != 0;
- r_offset = ((ext_rel->r_bits[1] & RELOC_BITS1_OFFSET_LITTLE)
- >> RELOC_BITS1_OFFSET_SH_LITTLE);
- /* Ignored the reserved bits. */
- r_size = ((ext_rel->r_bits[3] & RELOC_BITS3_SIZE_LITTLE)
- >> RELOC_BITS3_SIZE_SH_LITTLE);
- relocatep = false;
- adjust_addrp = true;
- gp_usedp = false;
- addend = 0;
- switch (r_type)
- {
- case ALPHA_R_GPRELHIGH:
- _bfd_error_handler (_("%pB: %s unsupported"),
- input_bfd, "ALPHA_R_GPRELHIGH");
- bfd_set_error (bfd_error_bad_value);
- continue;
- case ALPHA_R_GPRELLOW:
- _bfd_error_handler (_("%pB: %s unsupported"),
- input_bfd, "ALPHA_R_GPRELLOW");
- bfd_set_error (bfd_error_bad_value);
- continue;
- default:
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- input_bfd, (int) r_type);
- bfd_set_error (bfd_error_bad_value);
- continue;
- case ALPHA_R_IGNORE:
- /* This reloc appears after a GPDISP reloc. On earlier
- versions of OSF/1, It marked the position of the second
- instruction to be altered by the GPDISP reloc, but it is
- not otherwise used for anything. For some reason, the
- address of the relocation does not appear to include the
- section VMA, unlike the other relocation types. */
- if (bfd_link_relocatable (info))
- H_PUT_64 (input_bfd, input_section->output_offset + r_vaddr,
- ext_rel->r_vaddr);
- adjust_addrp = false;
- break;
- case ALPHA_R_REFLONG:
- case ALPHA_R_REFQUAD:
- case ALPHA_R_HINT:
- relocatep = true;
- break;
- case ALPHA_R_BRADDR:
- case ALPHA_R_SREL16:
- case ALPHA_R_SREL32:
- case ALPHA_R_SREL64:
- if (r_extern)
- addend += - (r_vaddr + 4);
- relocatep = true;
- break;
- case ALPHA_R_GPREL32:
- /* This relocation is used in a switch table. It is a 32
- bit offset from the current GP value. We must adjust it
- by the different between the original GP value and the
- current GP value. */
- relocatep = true;
- addend = ecoff_data (input_bfd)->gp - gp;
- gp_usedp = true;
- break;
- case ALPHA_R_LITERAL:
- /* This is a reference to a literal value, generally
- (always?) in the .lita section. This is a 16 bit GP
- relative relocation. Sometimes the subsequent reloc is a
- LITUSE reloc, which indicates how this reloc is used.
- This sometimes permits rewriting the two instructions
- referred to by the LITERAL and the LITUSE into different
- instructions which do not refer to .lita. This can save
- a memory reference, and permits removing a value from
- .lita thus saving GP relative space.
- We do not these optimizations. To do them we would need
- to arrange to link the .lita section first, so that by
- the time we got here we would know the final values to
- use. This would not be particularly difficult, but it is
- not currently implemented. */
- /* I believe that the LITERAL reloc will only apply to a ldq
- or ldl instruction, so check my assumption. */
- {
- unsigned long insn;
- insn = bfd_get_32 (input_bfd,
- contents + r_vaddr - input_section->vma);
- BFD_ASSERT (((insn >> 26) & 0x3f) == 0x29
- || ((insn >> 26) & 0x3f) == 0x28);
- }
- relocatep = true;
- addend = ecoff_data (input_bfd)->gp - gp;
- gp_usedp = true;
- break;
- case ALPHA_R_LITUSE:
- /* See ALPHA_R_LITERAL above for the uses of this reloc. It
- does not cause anything to happen, itself. */
- break;
- case ALPHA_R_GPDISP:
- /* This marks the ldah of an ldah/lda pair which loads the
- gp register with the difference of the gp value and the
- current location. The second of the pair is r_symndx
- bytes ahead. It used to be marked with an ALPHA_R_IGNORE
- reloc, but OSF/1 3.2 no longer does that. */
- {
- unsigned long insn1, insn2;
- /* Get the two instructions. */
- insn1 = bfd_get_32 (input_bfd,
- contents + r_vaddr - input_section->vma);
- insn2 = bfd_get_32 (input_bfd,
- (contents
- + r_vaddr
- - input_section->vma
- + r_symndx));
- BFD_ASSERT (((insn1 >> 26) & 0x3f) == 0x09); /* ldah */
- BFD_ASSERT (((insn2 >> 26) & 0x3f) == 0x08); /* lda */
- /* Get the existing addend. We must account for the sign
- extension done by lda and ldah. */
- addend = ((insn1 & 0xffff) << 16) + (insn2 & 0xffff);
- if (insn1 & 0x8000)
- {
- /* This is addend -= 0x100000000 without causing an
- integer overflow on a 32 bit host. */
- addend -= 0x80000000;
- addend -= 0x80000000;
- }
- if (insn2 & 0x8000)
- addend -= 0x10000;
- /* The existing addend includes the difference between the
- gp of the input BFD and the address in the input BFD.
- We want to change this to the difference between the
- final GP and the final address. */
- addend += (gp
- - ecoff_data (input_bfd)->gp
- + input_section->vma
- - (input_section->output_section->vma
- + input_section->output_offset));
- /* Change the instructions, accounting for the sign
- extension, and write them out. */
- if (addend & 0x8000)
- addend += 0x10000;
- insn1 = (insn1 & 0xffff0000) | ((addend >> 16) & 0xffff);
- insn2 = (insn2 & 0xffff0000) | (addend & 0xffff);
- bfd_put_32 (input_bfd, (bfd_vma) insn1,
- contents + r_vaddr - input_section->vma);
- bfd_put_32 (input_bfd, (bfd_vma) insn2,
- contents + r_vaddr - input_section->vma + r_symndx);
- gp_usedp = true;
- }
- break;
- case ALPHA_R_OP_PUSH:
- case ALPHA_R_OP_PSUB:
- case ALPHA_R_OP_PRSHIFT:
- /* Manipulate values on the reloc evaluation stack. The
- r_vaddr field is not an address in input_section, it is
- the current value (including any addend) of the object
- being used. */
- if (! r_extern)
- {
- asection *s;
- s = symndx_to_section[r_symndx];
- if (s == (asection *) NULL)
- abort ();
- addend = s->output_section->vma + s->output_offset - s->vma;
- }
- else
- {
- struct ecoff_link_hash_entry *h;
- h = sym_hashes[r_symndx];
- if (h == (struct ecoff_link_hash_entry *) NULL)
- abort ();
- if (! bfd_link_relocatable (info))
- {
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- else
- {
- /* Note that we pass the address as 0, since we
- do not have a meaningful number for the
- location within the section that is being
- relocated. */
- (*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, (bfd_vma) 0, true);
- addend = 0;
- }
- }
- else
- {
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak
- && h->indx == -1)
- {
- /* This symbol is not being written out. Pass
- the address as 0, as with undefined_symbol,
- above. */
- (*info->callbacks->unattached_reloc)
- (info, h->root.root.string,
- input_bfd, input_section, (bfd_vma) 0);
- }
- addend = alpha_convert_external_reloc (output_bfd, info,
- input_bfd,
- ext_rel, h);
- }
- }
- addend += r_vaddr;
- if (bfd_link_relocatable (info))
- {
- /* Adjust r_vaddr by the addend. */
- H_PUT_64 (input_bfd, addend, ext_rel->r_vaddr);
- }
- else
- {
- switch (r_type)
- {
- case ALPHA_R_OP_PUSH:
- if (tos >= RELOC_STACKSIZE)
- abort ();
- stack[tos++] = addend;
- break;
- case ALPHA_R_OP_PSUB:
- if (tos == 0)
- abort ();
- stack[tos - 1] -= addend;
- break;
- case ALPHA_R_OP_PRSHIFT:
- if (tos == 0)
- abort ();
- stack[tos - 1] >>= addend;
- break;
- }
- }
- adjust_addrp = false;
- break;
- case ALPHA_R_OP_STORE:
- /* Store a value from the reloc stack into a bitfield. If
- we are generating relocatable output, all we do is
- adjust the address of the reloc. */
- if (! bfd_link_relocatable (info))
- {
- bfd_vma mask;
- bfd_vma val;
- if (tos == 0)
- abort ();
- /* Get the relocation mask. The separate steps and the
- casts to bfd_vma are attempts to avoid a bug in the
- Alpha OSF 1.3 C compiler. See reloc.c for more
- details. */
- mask = 1;
- mask <<= (bfd_vma) r_size;
- mask -= 1;
- /* FIXME: I don't know what kind of overflow checking,
- if any, should be done here. */
- val = bfd_get_64 (input_bfd,
- contents + r_vaddr - input_section->vma);
- val &=~ mask << (bfd_vma) r_offset;
- val |= (stack[--tos] & mask) << (bfd_vma) r_offset;
- bfd_put_64 (input_bfd, val,
- contents + r_vaddr - input_section->vma);
- }
- break;
- case ALPHA_R_GPVALUE:
- /* I really don't know if this does the right thing. */
- gp = ecoff_data (input_bfd)->gp + r_symndx;
- gp_undefined = false;
- break;
- }
- if (relocatep)
- {
- reloc_howto_type *howto;
- struct ecoff_link_hash_entry *h = NULL;
- asection *s = NULL;
- bfd_vma relocation;
- bfd_reloc_status_type r;
- /* Perform a relocation. */
- howto = &alpha_howto_table[r_type];
- if (r_extern)
- {
- h = sym_hashes[r_symndx];
- /* If h is NULL, that means that there is a reloc
- against an external symbol which we thought was just
- a debugging symbol. This should not happen. */
- if (h == (struct ecoff_link_hash_entry *) NULL)
- abort ();
- }
- else
- {
- if (r_symndx >= NUM_RELOC_SECTIONS)
- s = NULL;
- else
- s = symndx_to_section[r_symndx];
- if (s == (asection *) NULL)
- abort ();
- }
- if (bfd_link_relocatable (info))
- {
- /* We are generating relocatable output, and must
- convert the existing reloc. */
- if (r_extern)
- {
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak
- && h->indx == -1)
- {
- /* This symbol is not being written out. */
- (*info->callbacks->unattached_reloc)
- (info, h->root.root.string, input_bfd,
- input_section, r_vaddr - input_section->vma);
- }
- relocation = alpha_convert_external_reloc (output_bfd,
- info,
- input_bfd,
- ext_rel,
- h);
- }
- else
- {
- /* This is a relocation against a section. Adjust
- the value by the amount the section moved. */
- relocation = (s->output_section->vma
- + s->output_offset
- - s->vma);
- }
- /* If this is PC relative, the existing object file
- appears to already have the reloc worked out. We
- must subtract out the old value and add in the new
- one. */
- if (howto->pc_relative)
- relocation -= (input_section->output_section->vma
- + input_section->output_offset
- - input_section->vma);
- /* Put in any addend. */
- relocation += addend;
- /* Adjust the contents. */
- r = _bfd_relocate_contents (howto, input_bfd, relocation,
- (contents
- + r_vaddr
- - input_section->vma));
- }
- else
- {
- /* We are producing a final executable. */
- if (r_extern)
- {
- /* This is a reloc against a symbol. */
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *hsec;
- hsec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + hsec->output_section->vma
- + hsec->output_offset);
- }
- else
- {
- (*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- r_vaddr - input_section->vma, true);
- relocation = 0;
- }
- }
- else
- {
- /* This is a reloc against a section. */
- relocation = (s->output_section->vma
- + s->output_offset
- - s->vma);
- /* Adjust a PC relative relocation by removing the
- reference to the original source section. */
- if (howto->pc_relative)
- relocation += input_section->vma;
- }
- r = _bfd_final_link_relocate (howto,
- input_bfd,
- input_section,
- contents,
- r_vaddr - input_section->vma,
- relocation,
- addend);
- }
- if (r != bfd_reloc_ok)
- {
- switch (r)
- {
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- {
- const char *name;
- if (r_extern)
- name = sym_hashes[r_symndx]->root.root.string;
- else
- name = bfd_section_name (symndx_to_section[r_symndx]);
- (*info->callbacks->reloc_overflow)
- (info, NULL, name, alpha_howto_table[r_type].name,
- (bfd_vma) 0, input_bfd, input_section,
- r_vaddr - input_section->vma);
- }
- break;
- }
- }
- }
- if (bfd_link_relocatable (info) && adjust_addrp)
- {
- /* Change the address of the relocation. */
- H_PUT_64 (input_bfd,
- (input_section->output_section->vma
- + input_section->output_offset
- - input_section->vma
- + r_vaddr),
- ext_rel->r_vaddr);
- }
- if (gp_usedp && gp_undefined)
- {
- (*info->callbacks->reloc_dangerous)
- (info, _("GP relative relocation used when GP not defined"),
- input_bfd, input_section, r_vaddr - input_section->vma);
- /* Only give the error once per link. */
- gp = 4;
- _bfd_set_gp_value (output_bfd, gp);
- gp_undefined = false;
- }
- }
- if (tos != 0)
- abort ();
- return true;
- }
- /* Do final adjustments to the filehdr and the aouthdr. This routine
- sets the dynamic bits in the file header. */
- static bool
- alpha_adjust_headers (bfd *abfd,
- struct internal_filehdr *fhdr,
- struct internal_aouthdr *ahdr ATTRIBUTE_UNUSED)
- {
- if ((abfd->flags & (DYNAMIC | EXEC_P)) == (DYNAMIC | EXEC_P))
- fhdr->f_flags |= F_ALPHA_CALL_SHARED;
- else if ((abfd->flags & DYNAMIC) != 0)
- fhdr->f_flags |= F_ALPHA_SHARABLE;
- return true;
- }
- /* Archive handling. In OSF/1 (or Digital Unix) v3.2, Digital
- introduced archive packing, in which the elements in an archive are
- optionally compressed using a simple dictionary scheme. We know
- how to read such archives, but we don't write them. */
- #define alpha_ecoff_slurp_armap _bfd_ecoff_slurp_armap
- #define alpha_ecoff_slurp_extended_name_table \
- _bfd_ecoff_slurp_extended_name_table
- #define alpha_ecoff_construct_extended_name_table \
- _bfd_ecoff_construct_extended_name_table
- #define alpha_ecoff_truncate_arname _bfd_ecoff_truncate_arname
- #define alpha_ecoff_write_armap _bfd_ecoff_write_armap
- #define alpha_ecoff_write_ar_hdr _bfd_generic_write_ar_hdr
- #define alpha_ecoff_generic_stat_arch_elt _bfd_ecoff_generic_stat_arch_elt
- #define alpha_ecoff_update_armap_timestamp _bfd_ecoff_update_armap_timestamp
- /* A compressed file uses this instead of ARFMAG. */
- #define ARFZMAG "Z\012"
- /* Read an archive header. This is like the standard routine, but it
- also accepts ARFZMAG. */
- static void *
- alpha_ecoff_read_ar_hdr (bfd *abfd)
- {
- struct areltdata *ret;
- struct ar_hdr *h;
- ret = (struct areltdata *) _bfd_generic_read_ar_hdr_mag (abfd, ARFZMAG);
- if (ret == NULL)
- return NULL;
- h = (struct ar_hdr *) ret->arch_header;
- if (strncmp (h->ar_fmag, ARFZMAG, 2) == 0)
- {
- bfd_byte ab[8];
- /* This is a compressed file. We must set the size correctly.
- The size is the eight bytes after the dummy file header. */
- if (bfd_seek (abfd, (file_ptr) FILHSZ, SEEK_CUR) != 0
- || bfd_bread (ab, (bfd_size_type) 8, abfd) != 8
- || bfd_seek (abfd, (file_ptr) (- (FILHSZ + 8)), SEEK_CUR) != 0)
- {
- free (ret);
- return NULL;
- }
- ret->parsed_size = H_GET_64 (abfd, ab);
- }
- return ret;
- }
- /* Get an archive element at a specified file position. This is where
- we uncompress the archive element if necessary. */
- static bfd *
- alpha_ecoff_get_elt_at_filepos (bfd *archive, file_ptr filepos,
- struct bfd_link_info *info)
- {
- bfd *nbfd = NULL;
- struct areltdata *tdata;
- struct ar_hdr *hdr;
- bfd_byte ab[8];
- bfd_size_type size;
- bfd_byte *buf, *p;
- struct bfd_in_memory *bim;
- ufile_ptr filesize;
- buf = NULL;
- nbfd = _bfd_get_elt_at_filepos (archive, filepos, info);
- if (nbfd == NULL)
- goto error_return;
- if ((nbfd->flags & BFD_IN_MEMORY) != 0)
- {
- /* We have already expanded this BFD. */
- return nbfd;
- }
- tdata = (struct areltdata *) nbfd->arelt_data;
- hdr = (struct ar_hdr *) tdata->arch_header;
- if (strncmp (hdr->ar_fmag, ARFZMAG, 2) != 0)
- return nbfd;
- /* We must uncompress this element. We do this by copying it into a
- memory buffer, and making bfd_bread and bfd_seek use that buffer.
- This can use a lot of memory, but it's simpler than getting a
- temporary file, making that work with the file descriptor caching
- code, and making sure that it is deleted at all appropriate
- times. It can be changed if it ever becomes important. */
- /* The compressed file starts with a dummy ECOFF file header. */
- if (bfd_seek (nbfd, (file_ptr) FILHSZ, SEEK_SET) != 0)
- goto error_return;
- /* The next eight bytes are the real file size. */
- if (bfd_bread (ab, (bfd_size_type) 8, nbfd) != 8)
- goto error_return;
- size = H_GET_64 (nbfd, ab);
- /* The decompression algorithm will at most expand by eight times. */
- filesize = bfd_get_file_size (archive);
- if (filesize != 0 && size / 8 > filesize)
- {
- bfd_set_error (bfd_error_malformed_archive);
- goto error_return;
- }
- if (size != 0)
- {
- bfd_size_type left;
- bfd_byte dict[4096];
- unsigned int h;
- bfd_byte b;
- buf = (bfd_byte *) bfd_malloc (size);
- if (buf == NULL)
- goto error_return;
- p = buf;
- left = size;
- /* I don't know what the next eight bytes are for. */
- if (bfd_bread (ab, (bfd_size_type) 8, nbfd) != 8)
- goto error_return;
- /* This is the uncompression algorithm. It's a simple
- dictionary based scheme in which each character is predicted
- by a hash of the previous three characters. A control byte
- indicates whether the character is predicted or whether it
- appears in the input stream; each control byte manages the
- next eight bytes in the output stream. */
- memset (dict, 0, sizeof dict);
- h = 0;
- while (bfd_bread (&b, (bfd_size_type) 1, nbfd) == 1)
- {
- unsigned int i;
- for (i = 0; i < 8; i++, b >>= 1)
- {
- bfd_byte n;
- if ((b & 1) == 0)
- n = dict[h];
- else
- {
- if (bfd_bread (&n, 1, nbfd) != 1)
- goto error_return;
- dict[h] = n;
- }
- *p++ = n;
- --left;
- if (left == 0)
- break;
- h <<= 4;
- h ^= n;
- h &= sizeof dict - 1;
- }
- if (left == 0)
- break;
- }
- }
- /* Now the uncompressed file contents are in buf. */
- bim = ((struct bfd_in_memory *)
- bfd_malloc ((bfd_size_type) sizeof (struct bfd_in_memory)));
- if (bim == NULL)
- goto error_return;
- bim->size = size;
- bim->buffer = buf;
- nbfd->mtime_set = true;
- nbfd->mtime = strtol (hdr->ar_date, (char **) NULL, 10);
- nbfd->flags |= BFD_IN_MEMORY;
- nbfd->iostream = bim;
- nbfd->iovec = &_bfd_memory_iovec;
- nbfd->origin = 0;
- BFD_ASSERT (! nbfd->cacheable);
- return nbfd;
- error_return:
- free (buf);
- if (nbfd != NULL)
- bfd_close (nbfd);
- return NULL;
- }
- /* Open the next archived file. */
- static bfd *
- alpha_ecoff_openr_next_archived_file (bfd *archive, bfd *last_file)
- {
- ufile_ptr filestart;
- if (last_file == NULL)
- filestart = bfd_ardata (archive)->first_file_filepos;
- else
- {
- struct areltdata *t;
- struct ar_hdr *h;
- bfd_size_type size;
- /* We can't use arelt_size here, because that uses parsed_size,
- which is the uncompressed size. We need the compressed size. */
- t = (struct areltdata *) last_file->arelt_data;
- h = (struct ar_hdr *) t->arch_header;
- size = strtol (h->ar_size, (char **) NULL, 10);
- /* Pad to an even boundary...
- Note that last_file->origin can be odd in the case of
- BSD-4.4-style element with a long odd size. */
- filestart = last_file->proxy_origin + size;
- filestart += filestart % 2;
- if (filestart < last_file->proxy_origin)
- {
- /* Prevent looping. See PR19256. */
- bfd_set_error (bfd_error_malformed_archive);
- return NULL;
- }
- }
- return alpha_ecoff_get_elt_at_filepos (archive, filestart, NULL);
- }
- /* Open the archive file given an index into the armap. */
- static bfd *
- alpha_ecoff_get_elt_at_index (bfd *abfd, symindex sym_index)
- {
- carsym *entry;
- entry = bfd_ardata (abfd)->symdefs + sym_index;
- return alpha_ecoff_get_elt_at_filepos (abfd, entry->file_offset,
- NULL);
- }
- static void
- alpha_ecoff_swap_coff_aux_in (bfd *abfd ATTRIBUTE_UNUSED,
- void *ext1 ATTRIBUTE_UNUSED,
- int type ATTRIBUTE_UNUSED,
- int in_class ATTRIBUTE_UNUSED,
- int indx ATTRIBUTE_UNUSED,
- int numaux ATTRIBUTE_UNUSED,
- void *in1 ATTRIBUTE_UNUSED)
- {
- }
- static void
- alpha_ecoff_swap_coff_sym_in (bfd *abfd ATTRIBUTE_UNUSED,
- void *ext1 ATTRIBUTE_UNUSED,
- void *in1 ATTRIBUTE_UNUSED)
- {
- }
- static void
- alpha_ecoff_swap_coff_lineno_in (bfd *abfd ATTRIBUTE_UNUSED,
- void *ext1 ATTRIBUTE_UNUSED,
- void *in1 ATTRIBUTE_UNUSED)
- {
- }
- static unsigned int
- alpha_ecoff_swap_coff_aux_out (bfd *abfd ATTRIBUTE_UNUSED,
- void *inp ATTRIBUTE_UNUSED,
- int type ATTRIBUTE_UNUSED,
- int in_class ATTRIBUTE_UNUSED,
- int indx ATTRIBUTE_UNUSED,
- int numaux ATTRIBUTE_UNUSED,
- void *extp ATTRIBUTE_UNUSED)
- {
- return 0;
- }
- static unsigned int
- alpha_ecoff_swap_coff_sym_out (bfd *abfd ATTRIBUTE_UNUSED,
- void *inp ATTRIBUTE_UNUSED,
- void *extp ATTRIBUTE_UNUSED)
- {
- return 0;
- }
- static unsigned int
- alpha_ecoff_swap_coff_lineno_out (bfd *abfd ATTRIBUTE_UNUSED,
- void *inp ATTRIBUTE_UNUSED,
- void *extp ATTRIBUTE_UNUSED)
- {
- return 0;
- }
- static unsigned int
- alpha_ecoff_swap_coff_reloc_out (bfd *abfd ATTRIBUTE_UNUSED,
- void *inp ATTRIBUTE_UNUSED,
- void *extp ATTRIBUTE_UNUSED)
- {
- return 0;
- }
- /* This is the ECOFF backend structure. The backend field of the
- target vector points to this. */
- static const struct ecoff_backend_data alpha_ecoff_backend_data =
- {
- /* COFF backend structure. */
- {
- alpha_ecoff_swap_coff_aux_in, alpha_ecoff_swap_coff_sym_in,
- alpha_ecoff_swap_coff_lineno_in, alpha_ecoff_swap_coff_aux_out,
- alpha_ecoff_swap_coff_sym_out, alpha_ecoff_swap_coff_lineno_out,
- alpha_ecoff_swap_coff_reloc_out,
- alpha_ecoff_swap_filehdr_out, alpha_ecoff_swap_aouthdr_out,
- alpha_ecoff_swap_scnhdr_out,
- FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, 0, FILNMLEN, true,
- ECOFF_NO_LONG_SECTION_NAMES, 4, false, 2, 32768,
- alpha_ecoff_swap_filehdr_in, alpha_ecoff_swap_aouthdr_in,
- alpha_ecoff_swap_scnhdr_in, NULL,
- alpha_ecoff_bad_format_hook, _bfd_ecoff_set_arch_mach_hook,
- alpha_ecoff_mkobject_hook, _bfd_ecoff_styp_to_sec_flags,
- _bfd_ecoff_set_alignment_hook, _bfd_ecoff_slurp_symbol_table,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL
- },
- /* Supported architecture. */
- bfd_arch_alpha,
- /* Initial portion of armap string. */
- "________64",
- /* The page boundary used to align sections in a demand-paged
- executable file. E.g., 0x1000. */
- 0x2000,
- /* TRUE if the .rdata section is part of the text segment, as on the
- Alpha. FALSE if .rdata is part of the data segment, as on the
- MIPS. */
- true,
- /* Bitsize of constructor entries. */
- 64,
- /* Reloc to use for constructor entries. */
- &alpha_howto_table[ALPHA_R_REFQUAD],
- {
- /* Symbol table magic number. */
- magicSym2,
- /* Alignment of debugging information. E.g., 4. */
- 8,
- /* Sizes of external symbolic information. */
- sizeof (struct hdr_ext),
- sizeof (struct dnr_ext),
- sizeof (struct pdr_ext),
- sizeof (struct sym_ext),
- sizeof (struct opt_ext),
- sizeof (struct fdr_ext),
- sizeof (struct rfd_ext),
- sizeof (struct ext_ext),
- /* Functions to swap in external symbolic data. */
- ecoff_swap_hdr_in,
- ecoff_swap_dnr_in,
- ecoff_swap_pdr_in,
- ecoff_swap_sym_in,
- ecoff_swap_opt_in,
- ecoff_swap_fdr_in,
- ecoff_swap_rfd_in,
- ecoff_swap_ext_in,
- _bfd_ecoff_swap_tir_in,
- _bfd_ecoff_swap_rndx_in,
- /* Functions to swap out external symbolic data. */
- ecoff_swap_hdr_out,
- ecoff_swap_dnr_out,
- ecoff_swap_pdr_out,
- ecoff_swap_sym_out,
- ecoff_swap_opt_out,
- ecoff_swap_fdr_out,
- ecoff_swap_rfd_out,
- ecoff_swap_ext_out,
- _bfd_ecoff_swap_tir_out,
- _bfd_ecoff_swap_rndx_out,
- /* Function to read in symbolic data. */
- _bfd_ecoff_slurp_symbolic_info
- },
- /* External reloc size. */
- RELSZ,
- /* Reloc swapping functions. */
- alpha_ecoff_swap_reloc_in,
- alpha_ecoff_swap_reloc_out,
- /* Backend reloc tweaking. */
- alpha_adjust_reloc_in,
- alpha_adjust_reloc_out,
- /* Relocate section contents while linking. */
- alpha_relocate_section,
- /* Do final adjustments to filehdr and aouthdr. */
- alpha_adjust_headers,
- /* Read an element from an archive at a given file position. */
- alpha_ecoff_get_elt_at_filepos
- };
- /* Looking up a reloc type is Alpha specific. */
- #define _bfd_ecoff_bfd_reloc_type_lookup alpha_bfd_reloc_type_lookup
- #define _bfd_ecoff_bfd_reloc_name_lookup \
- alpha_bfd_reloc_name_lookup
- /* So is getting relocated section contents. */
- #define _bfd_ecoff_bfd_get_relocated_section_contents \
- alpha_ecoff_get_relocated_section_contents
- /* Handling file windows is generic. */
- #define _bfd_ecoff_get_section_contents_in_window \
- _bfd_generic_get_section_contents_in_window
- /* Input section flag lookup is generic. */
- #define _bfd_ecoff_bfd_lookup_section_flags bfd_generic_lookup_section_flags
- /* Relaxing sections is generic. */
- #define _bfd_ecoff_bfd_relax_section bfd_generic_relax_section
- #define _bfd_ecoff_bfd_gc_sections bfd_generic_gc_sections
- #define _bfd_ecoff_bfd_merge_sections bfd_generic_merge_sections
- #define _bfd_ecoff_bfd_is_group_section bfd_generic_is_group_section
- #define _bfd_ecoff_bfd_group_name bfd_generic_group_name
- #define _bfd_ecoff_bfd_discard_group bfd_generic_discard_group
- #define _bfd_ecoff_section_already_linked \
- _bfd_coff_section_already_linked
- #define _bfd_ecoff_bfd_define_common_symbol bfd_generic_define_common_symbol
- #define _bfd_ecoff_bfd_link_hide_symbol _bfd_generic_link_hide_symbol
- #define _bfd_ecoff_bfd_define_start_stop bfd_generic_define_start_stop
- #define _bfd_ecoff_bfd_link_check_relocs _bfd_generic_link_check_relocs
- /* Installing internal relocations in a section is also generic. */
- #define _bfd_ecoff_set_reloc _bfd_generic_set_reloc
- const bfd_target alpha_ecoff_le_vec =
- {
- "ecoff-littlealpha", /* name */
- bfd_target_ecoff_flavour,
- BFD_ENDIAN_LITTLE, /* data byte order is little */
- BFD_ENDIAN_LITTLE, /* header byte order is little */
- (HAS_RELOC | EXEC_P /* object flags */
- | HAS_LINENO | HAS_DEBUG
- | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE
- | SEC_DATA | SEC_SMALL_DATA),
- 0, /* leading underscore */
- ' ', /* ar_pad_char */
- 15, /* ar_max_namelen */
- 0, /* match priority. */
- TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
- bfd_getl64, bfd_getl_signed_64, bfd_putl64,
- bfd_getl32, bfd_getl_signed_32, bfd_putl32,
- bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
- bfd_getl64, bfd_getl_signed_64, bfd_putl64,
- bfd_getl32, bfd_getl_signed_32, bfd_putl32,
- bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
- { /* bfd_check_format */
- _bfd_dummy_target,
- alpha_ecoff_object_p,
- bfd_generic_archive_p,
- _bfd_dummy_target
- },
- { /* bfd_set_format */
- _bfd_bool_bfd_false_error,
- _bfd_ecoff_mkobject,
- _bfd_generic_mkarchive,
- _bfd_bool_bfd_false_error
- },
- { /* bfd_write_contents */
- _bfd_bool_bfd_false_error,
- _bfd_ecoff_write_object_contents,
- _bfd_write_archive_contents,
- _bfd_bool_bfd_false_error
- },
- BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
- BFD_JUMP_TABLE_COPY (_bfd_ecoff),
- BFD_JUMP_TABLE_CORE (_bfd_nocore),
- BFD_JUMP_TABLE_ARCHIVE (alpha_ecoff),
- BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
- BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
- BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
- BFD_JUMP_TABLE_LINK (_bfd_ecoff),
- BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
- NULL,
- &alpha_ecoff_backend_data
- };
|