1469 lines
49 KiB
C
1469 lines
49 KiB
C
/* BFD back-end for PowerPC Microsoft Portable Executable files.
|
||
Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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Original version pieced together by Kim Knuttila (krk@cygnus.com)
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There is nothing new under the sun. This file draws a lot on other
|
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coff files, in particular, those for the rs/6000, alpha, mips, and
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intel backends, and the PE work for the arm.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
|
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along with this program; if not, write to the Free Software
|
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Current State:
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- objdump works
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- relocs generated by gas
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "obstack.h"
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#include "coff/powerpc.h"
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#include "coff/internal.h"
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#include "coff/pe.h"
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#ifdef BADMAG
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#undef BADMAG
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#endif
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#define BADMAG(x) PPCBADMAG(x)
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#include "libcoff.h"
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/* The main body of code is in coffcode.h. */
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
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/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
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from smaller values. Start with zero, widen, *then* decrement. */
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#define MINUS_ONE (((bfd_vma)0) - 1)
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/* these should definitely go in a header file somewhere... */
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/* NOP */
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#define IMAGE_REL_PPC_ABSOLUTE 0x0000
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/* 64-bit address */
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#define IMAGE_REL_PPC_ADDR64 0x0001
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/* 32-bit address */
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#define IMAGE_REL_PPC_ADDR32 0x0002
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/* 26-bit address, shifted left 2 (branch absolute) */
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#define IMAGE_REL_PPC_ADDR24 0x0003
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/* 16-bit address */
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#define IMAGE_REL_PPC_ADDR16 0x0004
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/* 16-bit address, shifted left 2 (load doubleword) */
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#define IMAGE_REL_PPC_ADDR14 0x0005
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/* 26-bit PC-relative offset, shifted left 2 (branch relative) */
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#define IMAGE_REL_PPC_REL24 0x0006
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/* 16-bit PC-relative offset, shifted left 2 (br cond relative) */
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#define IMAGE_REL_PPC_REL14 0x0007
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/* 16-bit offset from TOC base */
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#define IMAGE_REL_PPC_TOCREL16 0x0008
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/* 16-bit offset from TOC base, shifted left 2 (load doubleword) */
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#define IMAGE_REL_PPC_TOCREL14 0x0009
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/* 32-bit addr w/o image base */
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#define IMAGE_REL_PPC_ADDR32NB 0x000A
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/* va of containing section (as in an image sectionhdr) */
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#define IMAGE_REL_PPC_SECREL 0x000B
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/* sectionheader number */
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#define IMAGE_REL_PPC_SECTION 0x000C
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/* substitute TOC restore instruction iff symbol is glue code */
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#define IMAGE_REL_PPC_IFGLUE 0x000D
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/* symbol is glue code; virtual address is TOC restore instruction */
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#define IMAGE_REL_PPC_IMGLUE 0x000E
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/* va of containing section (limited to 16 bits) */
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#define IMAGE_REL_PPC_SECREL16 0x000F
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/* stuff to handle immediate data when the number of bits in the */
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/* data is greater than the number of bits in the immediate field */
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/* We need to do (usually) 32 bit arithmetic on 16 bit chunks */
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#define IMAGE_REL_PPC_REFHI 0x0010
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#define IMAGE_REL_PPC_REFLO 0x0011
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#define IMAGE_REL_PPC_PAIR 0x0012
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/* Flag bits in IMAGE_RELOCATION.TYPE */
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/* subtract reloc value rather than adding it */
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#define IMAGE_REL_PPC_NEG 0x0100
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/* fix branch prediction bit to predict branch taken */
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#define IMAGE_REL_PPC_BRTAKEN 0x0200
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/* fix branch prediction bit to predict branch not taken */
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#define IMAGE_REL_PPC_BRNTAKEN 0x0400
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/* toc slot defined in file (or, data in toc) */
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#define IMAGE_REL_PPC_TOCDEFN 0x0800
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/* masks to isolate above values in IMAGE_RELOCATION.Type */
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#define IMAGE_REL_PPC_TYPEMASK 0x00FF
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#define IMAGE_REL_PPC_FLAGMASK 0x0F00
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#define EXTRACT_TYPE(x) ((x) & IMAGE_REL_PPC_TYPEMASK)
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#define EXTRACT_FLAGS(x) ((x) & IMAGE_REL_PPC_FLAGMASK)
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#define EXTRACT_JUNK(x) \
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((x) & ~(IMAGE_REL_PPC_TYPEMASK | IMAGE_REL_PPC_FLAGMASK))
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/* static helper functions to make relocation work */
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/* (Work In Progress) */
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static bfd_reloc_status_type ppc_refhi_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_reflo_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_pair_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_toc16_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_addr32nb_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_section_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_secrel_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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static bfd_reloc_status_type ppc_imglue_reloc PARAMS ((bfd *abfd,
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arelent *reloc,
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asymbol *symbol,
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PTR data,
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asection *section,
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bfd *output_bfd,
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char **error));
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/* FIXME: It'll take a while to get through all of these. I only need a few to
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get us started, so those I'll make sure work. Those marked FIXME are either
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completely unverified or have a specific unknown marked in the comment */
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/*---------------------------------------------------------------------------*/
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/* */
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/* Relocation entries for Windows/NT on PowerPC. */
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/* */
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/* From the document "" we find the following listed as used relocs: */
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/* */
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/* ABSOLUTE : The noop */
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/* ADDR[64|32|16] : fields that hold addresses in data fields or the */
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/* 16 bit displacement field on a load/store. */
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/* ADDR[24|14] : fields that hold addresses in branch and cond */
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/* branches. These represent [26|16] bit addresses. */
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/* The low order 2 bits are preserved. */
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/* REL[24|14] : branches relative to the Instruction Address */
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/* register. These represent [26|16] bit addresses, */
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/* as before. The instruction field will be zero, and */
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/* the address of the SYM will be inserted at link time. */
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/* TOCREL16 : 16 bit displacement field referring to a slot in */
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/* toc. */
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/* TOCREL14 : 16 bit displacement field, similar to REL14 or ADDR14. */
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/* ADDR32NB : 32 bit address relative to the virtual origin. */
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/* (On the alpha, this is always a linker generated thunk)*/
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/* (i.e. 32bit addr relative to the image base) */
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/* SECREL : The value is relative to the start of the section */
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/* containing the symbol. */
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/* SECTION : access to the header containing the item. Supports the */
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/* codeview debugger. */
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/* */
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/* In particular, note that the document does not indicate that the */
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/* relocations listed in the header file are used. */
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/* */
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/* */
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/* */
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/*---------------------------------------------------------------------------*/
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static reloc_howto_type ppc_coff_howto_table[] =
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{
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/* IMAGE_REL_PPC_ABSOLUTE 0x0000 NOP */
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/* Unused: */
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HOWTO (IMAGE_REL_PPC_ABSOLUTE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* dont complain_on_overflow */
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0, /* special_function */
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"ABSOLUTE", /* name */
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false, /* partial_inplace */
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0x00, /* src_mask */
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0x00, /* dst_mask */
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false), /* pcrel_offset */
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/* IMAGE_REL_PPC_ADDR64 0x0001 64-bit address */
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/* Unused: */
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HOWTO(IMAGE_REL_PPC_ADDR64, /* type */
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0, /* rightshift */
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3, /* size (0 = byte, 1 = short, 2 = long) */
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64, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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0, /* special_function */
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"ADDR64", /* name */
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true, /* partial_inplace */
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MINUS_ONE, /* src_mask */
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MINUS_ONE, /* dst_mask */
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false), /* pcrel_offset */
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/* IMAGE_REL_PPC_ADDR32 0x0002 32-bit address */
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/* Used: */
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HOWTO (IMAGE_REL_PPC_ADDR32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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0, /* special_function */
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"ADDR32", /* name */
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true, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* IMAGE_REL_PPC_ADDR24 0x0003 26-bit address, shifted left 2 (branch absolute) */
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/* the LI field is in bit 6 through bit 29 is 24 bits, + 2 for the shift */
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/* Of course, That's the IBM approved bit numbering, which is not what
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/* anyone else uses.... The li field is in bit 2 thru 25 */
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/* Used: */
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HOWTO (IMAGE_REL_PPC_ADDR24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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||
0, /* special_function */
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"ADDR24", /* name */
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||
true, /* partial_inplace */
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0x07fffffc, /* src_mask */
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0x07fffffc, /* dst_mask */
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false), /* pcrel_offset */
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/* IMAGE_REL_PPC_ADDR16 0x0004 16-bit address */
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/* Used: */
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||
HOWTO (IMAGE_REL_PPC_ADDR16, /* type */
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||
0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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||
16, /* bitsize */
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||
false, /* pc_relative */
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||
0, /* bitpos */
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||
complain_overflow_signed, /* complain_on_overflow */
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||
0, /* special_function */
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||
"ADDR16", /* name */
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||
true, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
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false), /* pcrel_offset */
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||
|
||
/* IMAGE_REL_PPC_ADDR14 0x0005 */
|
||
/* 16-bit address, shifted left 2 (load doubleword) */
|
||
/* FIXME: the mask is likely wrong, and the bit position may be as well */
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||
/* Unused: */
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||
HOWTO (IMAGE_REL_PPC_ADDR14, /* type */
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||
1, /* rightshift */
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||
1, /* size (0 = byte, 1 = short, 2 = long) */
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||
16, /* bitsize */
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||
false, /* pc_relative */
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||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
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||
0, /* special_function */
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||
"ADDR16", /* name */
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||
true, /* partial_inplace */
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||
0xffff, /* src_mask */
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||
0xffff, /* dst_mask */
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||
false), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_REL24 0x0006 */
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||
/* 26-bit PC-relative offset, shifted left 2 (branch relative) */
|
||
/* Used: */
|
||
HOWTO (IMAGE_REL_PPC_REL24, /* type */
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||
0, /* rightshift */
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||
2, /* size (0 = byte, 1 = short, 2 = long) */
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||
26, /* bitsize */
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||
true, /* pc_relative */
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||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"REL24", /* name */
|
||
true, /* partial_inplace */
|
||
0x3fffffc, /* src_mask */
|
||
0x3fffffc, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_REL14 0x0007 */
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||
/* 16-bit PC-relative offset, shifted left 2 (br cond relative) */
|
||
/* FIXME: the mask is likely wrong, and the bit position may be as well */
|
||
/* FIXME: how does it know how far to shift? */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_ADDR14, /* type */
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||
1, /* rightshift */
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||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"ADDR16", /* name */
|
||
true, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_TOCREL16 0x0008 */
|
||
/* 16-bit offset from TOC base */
|
||
/* Used: */
|
||
HOWTO (IMAGE_REL_PPC_TOCREL16,/* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc_toc16_reloc, /* special_function */
|
||
"TOCREL16", /* name */
|
||
false, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_TOCREL14 0x0009 */
|
||
/* 16-bit offset from TOC base, shifted left 2 (load doubleword) */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_TOCREL14,/* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"TOCREL14", /* name */
|
||
false, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_ADDR32NB 0x000A */
|
||
/* 32-bit addr w/ image base */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_ADDR32NB,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc_addr32nb_reloc, /* special_function */
|
||
"ADDR32NB", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_SECREL 0x000B */
|
||
/* va of containing section (as in an image sectionhdr) */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_SECREL,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc_secrel_reloc, /* special_function */
|
||
"SECREL", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_SECTION 0x000C */
|
||
/* sectionheader number */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_SECTION,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc_section_reloc, /* special_function */
|
||
"SECTION", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_IFGLUE 0x000D */
|
||
/* substitute TOC restore instruction iff symbol is glue code */
|
||
/* Used: */
|
||
HOWTO (IMAGE_REL_PPC_IFGLUE,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"IFGLUE", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_IMGLUE 0x000E */
|
||
/* symbol is glue code; virtual address is TOC restore instruction */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_IMGLUE,/* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
ppc_imglue_reloc, /* special_function */
|
||
"IMGLUE", /* name */
|
||
false, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_SECREL16 0x000F */
|
||
/* va of containing section (limited to 16 bits) */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_SECREL16,/* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
0, /* special_function */
|
||
"SECREL16", /* name */
|
||
true, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_REFHI 0x0010 */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_REFHI, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc_refhi_reloc, /* special_function */
|
||
"REFHI", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_REFLO 0x0011 */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_REFLO, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc_refhi_reloc, /* special_function */
|
||
"REFLO", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* IMAGE_REL_PPC_PAIR 0x0012 */
|
||
/* Unused: */
|
||
HOWTO (IMAGE_REL_PPC_PAIR, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
ppc_pair_reloc, /* special_function */
|
||
"PAIR", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false) /* pcrel_offset */
|
||
};
|
||
|
||
|
||
/* Provided the symbol, returns the value reffed */
|
||
static long get_symbol_value PARAMS ((asymbol *));
|
||
|
||
static long
|
||
get_symbol_value (symbol)
|
||
asymbol *symbol;
|
||
{
|
||
long relocation = 0;
|
||
|
||
if (bfd_is_com_section (symbol->section))
|
||
{
|
||
relocation = 0;
|
||
}
|
||
else
|
||
{
|
||
relocation = symbol->value +
|
||
symbol->section->output_section->vma +
|
||
symbol->section->output_offset;
|
||
}
|
||
|
||
return(relocation);
|
||
}
|
||
|
||
/* this function is in charge of performing all the ppc PE relocations */
|
||
/* Don't yet know if we want to do this this particular way ... (krk) */
|
||
/* (it is not yet enabled) */
|
||
|
||
static bfd_reloc_status_type
|
||
pe_ppc_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol_in;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
/* the consth relocation comes in two parts, we have to remember
|
||
the state between calls, in these variables */
|
||
static boolean part1_consth_active = false;
|
||
static unsigned long part1_consth_value;
|
||
|
||
unsigned long insn;
|
||
unsigned long sym_value;
|
||
unsigned long unsigned_value;
|
||
unsigned short r_type;
|
||
long signed_value;
|
||
|
||
unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
|
||
bfd_byte *hit_data =addr + (bfd_byte *)(data);
|
||
|
||
r_type = reloc_entry->howto->type;
|
||
|
||
if (output_bfd) {
|
||
/* Partial linking - do nothing */
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
|
||
}
|
||
|
||
if (symbol_in != NULL
|
||
&& bfd_is_und_section (symbol_in->section))
|
||
{
|
||
/* Keep the state machine happy in case we're called again */
|
||
if (r_type == IMAGE_REL_PPC_REFHI)
|
||
{
|
||
part1_consth_active = true;
|
||
part1_consth_value = 0;
|
||
}
|
||
return(bfd_reloc_undefined);
|
||
}
|
||
|
||
if ((part1_consth_active) && (r_type != IMAGE_REL_PPC_PAIR))
|
||
{
|
||
part1_consth_active = false;
|
||
*error_message = (char *) "Missing PAIR";
|
||
return(bfd_reloc_dangerous);
|
||
}
|
||
|
||
|
||
sym_value = get_symbol_value(symbol_in);
|
||
|
||
#if 0
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_IREL:
|
||
insn = bfd_get_32(abfd, hit_data);
|
||
/* Take the value in the field and sign extend it */
|
||
signed_value = EXTRACT_HWORD(insn);
|
||
signed_value = SIGN_EXTEND_HWORD(signed_value);
|
||
signed_value <<= 2;
|
||
signed_value += sym_value + reloc_entry->addend;
|
||
if (((signed_value + reloc_entry->address) & ~0x3ffff) == 0)
|
||
{ /* Absolute jmp/call */
|
||
insn |= (1<<24); /* Make it absolute */
|
||
signed_value += reloc_entry->address;
|
||
/* FIXME: Should we change r_type to R_IABS */
|
||
}
|
||
else
|
||
{
|
||
/* Relative jmp/call, so subtract from the value the
|
||
address of the place we're coming from */
|
||
signed_value -= (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
if (signed_value>0x1ffff || signed_value<-0x20000)
|
||
return(bfd_reloc_overflow);
|
||
}
|
||
signed_value >>= 2;
|
||
insn = INSERT_HWORD(insn, signed_value);
|
||
bfd_put_32(abfd, insn ,hit_data);
|
||
break;
|
||
case R_ILOHALF:
|
||
insn = bfd_get_32(abfd, hit_data);
|
||
unsigned_value = EXTRACT_HWORD(insn);
|
||
unsigned_value += sym_value + reloc_entry->addend;
|
||
insn = INSERT_HWORD(insn, unsigned_value);
|
||
bfd_put_32(abfd, insn, hit_data);
|
||
break;
|
||
case R_IHIHALF:
|
||
insn = bfd_get_32(abfd, hit_data);
|
||
/* consth, part 1
|
||
Just get the symbol value that is referenced */
|
||
part1_consth_active = true;
|
||
part1_consth_value = sym_value + reloc_entry->addend;
|
||
/* Don't modify insn until R_IHCONST */
|
||
break;
|
||
case R_IHCONST:
|
||
insn = bfd_get_32(abfd, hit_data);
|
||
/* consth, part 2
|
||
Now relocate the reference */
|
||
if (part1_consth_active == false) {
|
||
*error_message = (char *) "Missing IHIHALF";
|
||
return(bfd_reloc_dangerous);
|
||
}
|
||
/* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
|
||
unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/
|
||
unsigned_value += reloc_entry->addend; /* r_symndx */
|
||
unsigned_value += part1_consth_value;
|
||
unsigned_value = unsigned_value >> 16;
|
||
insn = INSERT_HWORD(insn, unsigned_value);
|
||
part1_consth_active = false;
|
||
bfd_put_32(abfd, insn, hit_data);
|
||
break;
|
||
case R_BYTE:
|
||
insn = bfd_get_8(abfd, hit_data);
|
||
unsigned_value = insn + sym_value + reloc_entry->addend;
|
||
if (unsigned_value & 0xffffff00) {
|
||
fprintf(stderr,"Relocation problem : ");
|
||
fprintf(stderr,"byte value too large in module %s\n",
|
||
abfd->filename);
|
||
return(bfd_reloc_overflow);
|
||
}
|
||
bfd_put_8(abfd, unsigned_value, hit_data);
|
||
break;
|
||
case R_HWORD:
|
||
insn = bfd_get_16(abfd, hit_data);
|
||
unsigned_value = insn + sym_value + reloc_entry->addend;
|
||
if (unsigned_value & 0xffff0000) {
|
||
fprintf(stderr,"Relocation problem : ");
|
||
fprintf(stderr,"hword value too large in module %s\n",
|
||
abfd->filename);
|
||
return(bfd_reloc_overflow);
|
||
}
|
||
|
||
bfd_put_16(abfd, insn, hit_data);
|
||
break;
|
||
case R_WORD:
|
||
insn = bfd_get_32(abfd, hit_data);
|
||
insn += sym_value + reloc_entry->addend;
|
||
bfd_put_32(abfd, insn, hit_data);
|
||
break;
|
||
default:
|
||
*error_message = "Unrecognized reloc";
|
||
return (bfd_reloc_dangerous);
|
||
}
|
||
|
||
#endif
|
||
|
||
return(bfd_reloc_ok);
|
||
}
|
||
|
||
/* The reloc processing routine for the optimized COFF linker. */
|
||
|
||
static boolean
|
||
coff_ppc_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, syms, sections)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
bfd *input_bfd;
|
||
asection *input_section;
|
||
bfd_byte *contents;
|
||
struct internal_reloc *relocs;
|
||
struct internal_syment *syms;
|
||
asection **sections;
|
||
{
|
||
struct internal_reloc *rel;
|
||
struct internal_reloc *relend;
|
||
boolean hihalf;
|
||
bfd_vma hihalf_val;
|
||
|
||
unsigned short r_type = EXTRACT_TYPE (rel->r_type);
|
||
unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
|
||
unsigned short junk = EXTRACT_JUNK (rel->r_type);
|
||
|
||
|
||
/* If we are performing a relocateable link, we don't need to do a
|
||
thing. The caller will take care of adjusting the reloc
|
||
addresses and symbol indices. */
|
||
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
hihalf = false;
|
||
hihalf_val = 0;
|
||
|
||
rel = relocs;
|
||
relend = rel + input_section->reloc_count;
|
||
for (; rel < relend; rel++)
|
||
{
|
||
long symndx;
|
||
bfd_byte *loc;
|
||
struct coff_link_hash_entry *h;
|
||
struct internal_syment *sym;
|
||
asection *sec;
|
||
bfd_vma val;
|
||
boolean overflow;
|
||
unsigned long insn;
|
||
long signed_value;
|
||
unsigned long unsigned_value;
|
||
bfd_reloc_status_type rstat;
|
||
|
||
symndx = rel->r_symndx;
|
||
loc = contents + rel->r_vaddr - input_section->vma;
|
||
|
||
if (symndx == -1)
|
||
h = NULL;
|
||
else
|
||
h = obj_coff_sym_hashes (input_bfd)[symndx];
|
||
|
||
sym = NULL;
|
||
sec = NULL;
|
||
val = 0;
|
||
|
||
overflow = false;
|
||
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
fprintf( stderr, "unsupported reloc %s\n",
|
||
ppc_coff_howto_table[r_type].name);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
case IMAGE_REL_PPC_TOCREL16:
|
||
case IMAGE_REL_PPC_IFGLUE:
|
||
case IMAGE_REL_PPC_SECTION:
|
||
case IMAGE_REL_PPC_SECREL:
|
||
case IMAGE_REL_PPC_IMGLUE:
|
||
case IMAGE_REL_PPC_ABSOLUTE:
|
||
break;
|
||
|
||
case IMAGE_REL_PPC_ADDR16:
|
||
case IMAGE_REL_PPC_REL24:
|
||
case IMAGE_REL_PPC_ADDR24:
|
||
case IMAGE_REL_PPC_ADDR32:
|
||
case IMAGE_REL_PPC_ADDR32NB:
|
||
rstat = _bfd_relocate_contents (ppc_coff_howto_table + r_type,
|
||
input_bfd, val, loc);
|
||
if (rstat == bfd_reloc_overflow)
|
||
overflow = true;
|
||
else if (rstat != bfd_reloc_ok)
|
||
abort ();
|
||
break;
|
||
}
|
||
|
||
if (overflow)
|
||
{
|
||
const char *name;
|
||
char buf[SYMNMLEN + 1];
|
||
|
||
if (symndx == -1)
|
||
name = "*ABS*";
|
||
else if (h != NULL)
|
||
name = h->root.root.string;
|
||
else if (sym == NULL)
|
||
name = "*unknown*";
|
||
else if (sym->_n._n_n._n_zeroes == 0
|
||
&& sym->_n._n_n._n_offset != 0)
|
||
name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
|
||
else
|
||
{
|
||
strncpy (buf, sym->_n._n_name, SYMNMLEN);
|
||
buf[SYMNMLEN] = '\0';
|
||
name = buf;
|
||
}
|
||
|
||
if (! ((*info->callbacks->reloc_overflow)
|
||
(info, name, ppc_coff_howto_table[r_type].name, (bfd_vma) 0,
|
||
input_bfd, input_section,
|
||
rel->r_vaddr - input_section->vma)))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
|
||
/* Some really cheezy macros that can be turned on to test stderr :-) */
|
||
|
||
#ifdef DEBUG_RELOC
|
||
#define UN_IMPL(x) \
|
||
{ \
|
||
static int i; \
|
||
if (i == 0) \
|
||
{ \
|
||
i = 1; \
|
||
fprintf(stderr,"Unimplemented Relocation -- %s\n",x); \
|
||
} \
|
||
}
|
||
|
||
#define DUMP_RELOC(n,r) \
|
||
{ \
|
||
fprintf(stderr,"%s sym %d, addr %d, addend %d\n", \
|
||
n, (*(r->sym_ptr_ptr))->name, \
|
||
r->address, r->addend); \
|
||
}
|
||
|
||
#define DUMP_RELOC2(n,r) \
|
||
{ \
|
||
fprintf(stderr,"%s sym %d, r_vaddr %d\n", \
|
||
n, r->r_symndx, r->r_vaddr); \
|
||
}
|
||
|
||
#else
|
||
#define UN_IMPL(x)
|
||
#define DUMP_RELOC(n,r)
|
||
#define DUMP_RELOC2(n,r)
|
||
#endif
|
||
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_refhi_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("REFHI");
|
||
DUMP_RELOC("REFHI",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_reflo_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("REFLO");
|
||
DUMP_RELOC("REFLO",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_pair_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("PAIR");
|
||
DUMP_RELOC("PAIR",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_toc16_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("TOCREL16");
|
||
DUMP_RELOC("TOCREL16",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
{
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* ADDR32NB : 32 bit address relative to the virtual origin. */
|
||
/* (On the alpha, this is always a linker generated thunk)*/
|
||
/* (i.e. 32bit addr relative to the image base) */
|
||
/* */
|
||
/* */
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_addr32nb_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("ADDR32NB");
|
||
DUMP_RELOC("ADDR32NB",reloc_entry);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_secrel_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("SECREL");
|
||
DUMP_RELOC("SECREL",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_section_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("SECTION");
|
||
DUMP_RELOC("SECTION",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
ppc_imglue_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
UN_IMPL("IMGLUE");
|
||
DUMP_RELOC("IMGLUE",reloc_entry);
|
||
|
||
if (output_bfd == (bfd *) NULL)
|
||
return bfd_reloc_continue;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
|
||
|
||
#define MAX_RELOC_INDEX \
|
||
(sizeof(ppc_coff_howto_table) / sizeof(ppc_coff_howto_table[0]) - 1)
|
||
|
||
|
||
/* FIXME: There is a possiblity that when we read in a reloc from a file,
|
||
that there are some bits encoded in the upper portion of the
|
||
type field. Not yet implemented.
|
||
*/
|
||
static void ppc_coff_rtype2howto PARAMS ((arelent *relent,
|
||
struct internal_reloc *internal));
|
||
|
||
static void
|
||
ppc_coff_rtype2howto (relent, internal)
|
||
arelent *relent;
|
||
struct internal_reloc *internal;
|
||
{
|
||
|
||
/* We can encode one of three things in the type field, aside from the
|
||
type:
|
||
1. IMAGE_REL_PPC_NEG - indicates the value field is a subtraction
|
||
value, rather than an addition value
|
||
2. IMAGE_REL_PPC_BRTAKEN, IMAGE_REL_PPC_BRNTAKEN - indicates that
|
||
the branch is expected to be taken or not.
|
||
3. IMAGE_REL_PPC_TOCDEFN - toc slot definition in the file
|
||
For now, we just strip this stuff to find the type, and ignore it other
|
||
than that.
|
||
*/
|
||
|
||
unsigned short r_type = EXTRACT_TYPE (internal->r_type);
|
||
unsigned short r_flags = EXTRACT_FLAGS(internal->r_type);
|
||
unsigned short junk = EXTRACT_JUNK (internal->r_type);
|
||
|
||
/* the masking process only slices off the bottom byte for r_type. */
|
||
if ( r_type > MAX_RELOC_INDEX )
|
||
{
|
||
fprintf(stderr,
|
||
"ppc_coff_rtype2howto: reloc index %d out of range [%d, %d]\n",
|
||
internal->r_type, 0, MAX_RELOC_INDEX);
|
||
abort();
|
||
}
|
||
|
||
/* check for absolute crap */
|
||
if ( junk != 0 )
|
||
{
|
||
fprintf(stderr,
|
||
"ppc_coff_rtype2howto: reloc index %d contains junk %d\n",
|
||
internal->r_type, junk);
|
||
abort();
|
||
}
|
||
|
||
#ifdef DEBUG_RELOC
|
||
/* now examine flags */
|
||
if (r_flags != 0)
|
||
{
|
||
fprintf (stderr, "Reloc with flags found!");
|
||
if ( r_flags & IMAGE_REL_PPC_NEG )
|
||
fprintf (stderr, " NEG");
|
||
if ( r_flags & IMAGE_REL_PPC_BRTAKEN )
|
||
fprintf (stderr, " BRTAKEN");
|
||
if ( r_flags & IMAGE_REL_PPC_BRNTAKEN )
|
||
fprintf (stderr, " BRNTAKEN");
|
||
if ( r_flags & IMAGE_REL_PPC_TOCDEFN )
|
||
fprintf (stderr, " TOCDEFN");
|
||
fprintf(stderr, "\n");
|
||
}
|
||
#endif
|
||
|
||
switch(r_type)
|
||
{
|
||
case IMAGE_REL_PPC_ADDR16:
|
||
case IMAGE_REL_PPC_REL24:
|
||
case IMAGE_REL_PPC_ADDR24:
|
||
case IMAGE_REL_PPC_TOCREL16:
|
||
case IMAGE_REL_PPC_ADDR32:
|
||
case IMAGE_REL_PPC_IFGLUE:
|
||
case IMAGE_REL_PPC_ADDR32NB:
|
||
case IMAGE_REL_PPC_SECTION:
|
||
case IMAGE_REL_PPC_SECREL:
|
||
DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal);
|
||
break;
|
||
case IMAGE_REL_PPC_IMGLUE:
|
||
DUMP_RELOC2(ppc_coff_howto_table[r_type].name, internal);
|
||
/* IMGLUE relocs have big numbers in them. Don't know what for yet. */
|
||
internal->r_vaddr = 0; /* make it zero for now */
|
||
break;
|
||
default:
|
||
fprintf(stderr,
|
||
"Warning: Unsupported reloc %s [%d] used -- it may not work.\n",
|
||
ppc_coff_howto_table[r_type].name,
|
||
r_type);
|
||
break;
|
||
}
|
||
|
||
relent->howto = ppc_coff_howto_table + r_type;
|
||
|
||
}
|
||
|
||
static reloc_howto_type *
|
||
coff_ppc_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
struct internal_reloc *rel;
|
||
struct coff_link_hash_entry *h;
|
||
struct internal_syment *sym;
|
||
bfd_vma *addendp;
|
||
{
|
||
reloc_howto_type *howto;
|
||
|
||
/* We can encode one of three things in the type field, aside from the
|
||
type:
|
||
1. IMAGE_REL_PPC_NEG - indicates the value field is a subtraction
|
||
value, rather than an addition value
|
||
2. IMAGE_REL_PPC_BRTAKEN, IMAGE_REL_PPC_BRNTAKEN - indicates that
|
||
the branch is expected to be taken or not.
|
||
3. IMAGE_REL_PPC_TOCDEFN - toc slot definition in the file
|
||
For now, we just strip this stuff to find the type, and ignore it other
|
||
than that.
|
||
*/
|
||
|
||
unsigned short r_type = EXTRACT_TYPE (rel->r_type);
|
||
unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
|
||
unsigned short junk = EXTRACT_JUNK (rel->r_type);
|
||
|
||
/* the masking process only slices off the bottom byte for r_type. */
|
||
if ( r_type > MAX_RELOC_INDEX )
|
||
{
|
||
fprintf(stderr,
|
||
"coff_ppc_rtype_to_howto: index %d out of range [%d, %d]\n",
|
||
r_type, 0, MAX_RELOC_INDEX);
|
||
abort();
|
||
}
|
||
|
||
/* check for absolute crap */
|
||
if ( junk != 0 )
|
||
{
|
||
fprintf(stderr,
|
||
"coff_ppc_rtype_to_howto: reloc index %d contains junk %d\n",
|
||
rel->r_type, junk);
|
||
abort();
|
||
}
|
||
|
||
#ifdef DEBUG_RELOC
|
||
/* now examine flags */
|
||
if (r_flags != 0)
|
||
{
|
||
fprintf (stderr, "Reloc with flags found!");
|
||
if ( r_flags & IMAGE_REL_PPC_NEG )
|
||
fprintf (stderr, " NEG");
|
||
if ( r_flags & IMAGE_REL_PPC_BRTAKEN )
|
||
fprintf (stderr, " BRTAKEN");
|
||
if ( r_flags & IMAGE_REL_PPC_BRNTAKEN )
|
||
fprintf (stderr, " BRNTAKEN");
|
||
if ( r_flags & IMAGE_REL_PPC_TOCDEFN )
|
||
fprintf (stderr, " TOCDEFN");
|
||
fprintf(stderr, "\n");
|
||
}
|
||
#endif
|
||
|
||
switch(r_type)
|
||
{
|
||
case IMAGE_REL_PPC_ADDR32NB:
|
||
DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
|
||
*addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
|
||
break;
|
||
case IMAGE_REL_PPC_ADDR16:
|
||
case IMAGE_REL_PPC_REL24:
|
||
case IMAGE_REL_PPC_ADDR24:
|
||
case IMAGE_REL_PPC_TOCREL16:
|
||
case IMAGE_REL_PPC_ADDR32:
|
||
case IMAGE_REL_PPC_IFGLUE:
|
||
case IMAGE_REL_PPC_SECTION:
|
||
case IMAGE_REL_PPC_SECREL:
|
||
DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
|
||
break;
|
||
case IMAGE_REL_PPC_IMGLUE:
|
||
DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
|
||
/* IMGLUE relocs have big numbers in them. Don't know what for yet. */
|
||
rel->r_vaddr = 0; /* make it zero for now */
|
||
break;
|
||
default:
|
||
fprintf(stderr,
|
||
"Warning: Unsupported reloc %s [%d] used -- it may not work.\n",
|
||
ppc_coff_howto_table[r_type].name,
|
||
r_type);
|
||
break;
|
||
}
|
||
|
||
howto = ppc_coff_howto_table + r_type;
|
||
return howto;
|
||
}
|
||
|
||
|
||
/* a cheesy little macro to make the code a little more readable */
|
||
#define HOW2MAP(bfd_rtype,ppc_rtype) \
|
||
case bfd_rtype: return &ppc_coff_howto_table[ppc_rtype]
|
||
|
||
static reloc_howto_type *ppc_coff_reloc_type_lookup
|
||
PARAMS ((bfd *, bfd_reloc_code_real_type));
|
||
|
||
static reloc_howto_type *
|
||
ppc_coff_reloc_type_lookup (abfd, code)
|
||
bfd *abfd;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
|
||
#ifdef DEBUG_RELOC
|
||
fprintf(stderr, "ppc_coff_reloc_type_lookup for %s\n",
|
||
bfd_get_reloc_code_name(code));
|
||
#endif
|
||
|
||
switch (code)
|
||
{
|
||
HOW2MAP(BFD_RELOC_16_GOT_PCREL, IMAGE_REL_PPC_IFGLUE);
|
||
HOW2MAP(BFD_RELOC_16, IMAGE_REL_PPC_ADDR16);
|
||
HOW2MAP(BFD_RELOC_PPC_B26, IMAGE_REL_PPC_REL24);
|
||
HOW2MAP(BFD_RELOC_PPC_BA26, IMAGE_REL_PPC_ADDR24);
|
||
HOW2MAP(BFD_RELOC_PPC_TOC16, IMAGE_REL_PPC_TOCREL16);
|
||
HOW2MAP(BFD_RELOC_32, IMAGE_REL_PPC_ADDR32);
|
||
default: return NULL;
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
#undef HOW2MAP
|
||
|
||
|
||
/* Tailor coffcode.h -- macro heaven. */
|
||
|
||
#define RTYPE2HOWTO(cache_ptr, dst) ppc_coff_rtype2howto (cache_ptr, dst)
|
||
|
||
/* We use the special COFF backend linker. */
|
||
/* #define coff_relocate_section _bfd_coff_generic_relocate_section */
|
||
#define coff_bfd_reloc_type_lookup ppc_coff_reloc_type_lookup
|
||
#define coff_rtype_to_howto coff_ppc_rtype_to_howto
|
||
#define coff_relocate_section coff_ppc_relocate_section
|
||
|
||
#define SELECT_RELOC(internal, howto) {internal.r_type=howto->type;}
|
||
|
||
#define COFF_PAGE_SIZE 0x1000
|
||
|
||
#include "coffcode.h"
|
||
|
||
/* The transfer vectors that lead the outside world to all of the above. */
|
||
|
||
#ifdef TARGET_LITTLE_SYM
|
||
const bfd_target
|
||
TARGET_LITTLE_SYM =
|
||
{
|
||
TARGET_LITTLE_NAME, /* name or coff-arm-little */
|
||
bfd_target_coff_flavour,
|
||
false, /* data byte order is little */
|
||
false, /* header byte order is little */
|
||
|
||
(HAS_RELOC | EXEC_P | /* FIXME: object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | WP_TEXT),
|
||
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
0, /* leading char */
|
||
'/', /* ar_pad_char */
|
||
15, /* ar_max_namelen??? FIXMEmgo */
|
||
|
||
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_dummy_target, coff_object_p, /* bfd_check_format */
|
||
bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p },
|
||
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
||
bfd_false},
|
||
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
||
_bfd_write_archive_contents, bfd_false},
|
||
|
||
BFD_JUMP_TABLE_GENERIC (coff),
|
||
BFD_JUMP_TABLE_COPY (coff),
|
||
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
||
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
||
BFD_JUMP_TABLE_SYMBOLS (coff),
|
||
BFD_JUMP_TABLE_RELOCS (coff),
|
||
BFD_JUMP_TABLE_WRITE (coff),
|
||
BFD_JUMP_TABLE_LINK (coff),
|
||
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
||
|
||
COFF_SWAP_TABLE,
|
||
};
|
||
#endif
|
||
|
||
#ifdef TARGET_BIG_SYM
|
||
const bfd_target
|
||
TARGET_BIG_SYM =
|
||
{
|
||
TARGET_BIG_NAME,
|
||
bfd_target_coff_flavour,
|
||
true, /* data byte order is big */
|
||
true, /* header byte order is big */
|
||
|
||
(HAS_RELOC | EXEC_P | /* FIXME: object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | WP_TEXT),
|
||
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
0, /* leading char */
|
||
'/', /* ar_pad_char */
|
||
15, /* ar_max_namelen??? FIXMEmgo */
|
||
|
||
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
||
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
||
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
||
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
||
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
||
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
||
|
||
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
||
bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p },
|
||
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
||
bfd_false},
|
||
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
||
_bfd_write_archive_contents, bfd_false},
|
||
|
||
BFD_JUMP_TABLE_GENERIC (coff),
|
||
BFD_JUMP_TABLE_COPY (coff),
|
||
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
||
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
||
BFD_JUMP_TABLE_SYMBOLS (coff),
|
||
BFD_JUMP_TABLE_RELOCS (coff),
|
||
BFD_JUMP_TABLE_WRITE (coff),
|
||
BFD_JUMP_TABLE_LINK (coff),
|
||
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
||
|
||
COFF_SWAP_TABLE,
|
||
};
|
||
|
||
#endif
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|