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binutils-gdb/include/elf/ppc.h
Alan Modra 32af9f6e55 PR ld/11088 
include/elf/
	* ppc.h (R_PPC_RELAX32, R_PPC_RELAX32PC, R_PPC_RELAX32_PLT,
	R_PPC_RELAX32PC_PLT): Delete.
	(R_PPC_RELAX, R_PPC_RELAX_PLT, R_PPC_RELAX_PLTREL24): Define.
bfd/
	* elf32-ppc.c (update_plt_info): Clear sec here when addend is
	less than 32768..
	(ppc_elf_check_relocs): ..rather than doing so here.  Ignore new
	relax relocs.
	(ppc_elf_gc_sweep_hook): Don't segfault when symbol hiding has
	removed plt_entry records.
	(ppc_elf_tls_setup): Handle PIE calls to __tls_get_addr correctly.
	(ppc_elf_tls_optimize): Likewise.  Also dec __tls_get_addr refcount
	when optimizing code using new tlsgd and tlsld marker relocs.
	(ppc_elf_relax_section): Differentiate relaxed PLTREL24 relocs
	from ADDR24 relocs using plt or glink.  Don't clear the addend
	for R_PPC_RELAX_PLTREL24.
	(ppc_elf_relocate_section): Correctly handle addends on relaxed
	PLTREL24 relocs.
2009-12-17 05:45:25 +00:00

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/* PPC ELF support for BFD.
Copyright 1995, 1996, 1998, 2000, 2001, 2002, 2003, 2005, 2007, 2008,
2009 Free Software Foundation, Inc.
By Michael Meissner, Cygnus Support, <meissner@cygnus.com>, from information
in the System V Application Binary Interface, PowerPC Processor Supplement
and the PowerPC Embedded Application Binary Interface (eabi).
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 2 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. */
/* This file holds definitions specific to the PPC ELF ABI. Note
that most of this is not actually implemented by BFD. */
#ifndef _ELF_PPC_H
#define _ELF_PPC_H
#include "elf/reloc-macros.h"
/* Relocations. */
START_RELOC_NUMBERS (elf_ppc_reloc_type)
RELOC_NUMBER (R_PPC_NONE, 0)
RELOC_NUMBER (R_PPC_ADDR32, 1)
RELOC_NUMBER (R_PPC_ADDR24, 2)
RELOC_NUMBER (R_PPC_ADDR16, 3)
RELOC_NUMBER (R_PPC_ADDR16_LO, 4)
RELOC_NUMBER (R_PPC_ADDR16_HI, 5)
RELOC_NUMBER (R_PPC_ADDR16_HA, 6)
RELOC_NUMBER (R_PPC_ADDR14, 7)
RELOC_NUMBER (R_PPC_ADDR14_BRTAKEN, 8)
RELOC_NUMBER (R_PPC_ADDR14_BRNTAKEN, 9)
RELOC_NUMBER (R_PPC_REL24, 10)
RELOC_NUMBER (R_PPC_REL14, 11)
RELOC_NUMBER (R_PPC_REL14_BRTAKEN, 12)
RELOC_NUMBER (R_PPC_REL14_BRNTAKEN, 13)
RELOC_NUMBER (R_PPC_GOT16, 14)
RELOC_NUMBER (R_PPC_GOT16_LO, 15)
RELOC_NUMBER (R_PPC_GOT16_HI, 16)
RELOC_NUMBER (R_PPC_GOT16_HA, 17)
RELOC_NUMBER (R_PPC_PLTREL24, 18)
RELOC_NUMBER (R_PPC_COPY, 19)
RELOC_NUMBER (R_PPC_GLOB_DAT, 20)
RELOC_NUMBER (R_PPC_JMP_SLOT, 21)
RELOC_NUMBER (R_PPC_RELATIVE, 22)
RELOC_NUMBER (R_PPC_LOCAL24PC, 23)
RELOC_NUMBER (R_PPC_UADDR32, 24)
RELOC_NUMBER (R_PPC_UADDR16, 25)
RELOC_NUMBER (R_PPC_REL32, 26)
RELOC_NUMBER (R_PPC_PLT32, 27)
RELOC_NUMBER (R_PPC_PLTREL32, 28)
RELOC_NUMBER (R_PPC_PLT16_LO, 29)
RELOC_NUMBER (R_PPC_PLT16_HI, 30)
RELOC_NUMBER (R_PPC_PLT16_HA, 31)
RELOC_NUMBER (R_PPC_SDAREL16, 32)
RELOC_NUMBER (R_PPC_SECTOFF, 33)
RELOC_NUMBER (R_PPC_SECTOFF_LO, 34)
RELOC_NUMBER (R_PPC_SECTOFF_HI, 35)
RELOC_NUMBER (R_PPC_SECTOFF_HA, 36)
RELOC_NUMBER (R_PPC_ADDR30, 37)
#ifndef RELOC_MACROS_GEN_FUNC
/* Fake relocations for branch stubs, only used internally by ld. */
RELOC_NUMBER (R_PPC_RELAX, 48)
RELOC_NUMBER (R_PPC_RELAX_PLT, 49)
RELOC_NUMBER (R_PPC_RELAX_PLTREL24, 50)
#endif
/* Relocs added to support TLS. */
RELOC_NUMBER (R_PPC_TLS, 67)
RELOC_NUMBER (R_PPC_DTPMOD32, 68)
RELOC_NUMBER (R_PPC_TPREL16, 69)
RELOC_NUMBER (R_PPC_TPREL16_LO, 70)
RELOC_NUMBER (R_PPC_TPREL16_HI, 71)
RELOC_NUMBER (R_PPC_TPREL16_HA, 72)
RELOC_NUMBER (R_PPC_TPREL32, 73)
RELOC_NUMBER (R_PPC_DTPREL16, 74)
RELOC_NUMBER (R_PPC_DTPREL16_LO, 75)
RELOC_NUMBER (R_PPC_DTPREL16_HI, 76)
RELOC_NUMBER (R_PPC_DTPREL16_HA, 77)
RELOC_NUMBER (R_PPC_DTPREL32, 78)
RELOC_NUMBER (R_PPC_GOT_TLSGD16, 79)
RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO, 80)
RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI, 81)
RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA, 82)
RELOC_NUMBER (R_PPC_GOT_TLSLD16, 83)
RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO, 84)
RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI, 85)
RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA, 86)
RELOC_NUMBER (R_PPC_GOT_TPREL16, 87)
RELOC_NUMBER (R_PPC_GOT_TPREL16_LO, 88)
RELOC_NUMBER (R_PPC_GOT_TPREL16_HI, 89)
RELOC_NUMBER (R_PPC_GOT_TPREL16_HA, 90)
RELOC_NUMBER (R_PPC_GOT_DTPREL16, 91)
RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO, 92)
RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI, 93)
RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA, 94)
RELOC_NUMBER (R_PPC_TLSGD, 95)
RELOC_NUMBER (R_PPC_TLSLD, 96)
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
RELOC_NUMBER (R_PPC_EMB_NADDR32, 101)
RELOC_NUMBER (R_PPC_EMB_NADDR16, 102)
RELOC_NUMBER (R_PPC_EMB_NADDR16_LO, 103)
RELOC_NUMBER (R_PPC_EMB_NADDR16_HI, 104)
RELOC_NUMBER (R_PPC_EMB_NADDR16_HA, 105)
RELOC_NUMBER (R_PPC_EMB_SDAI16, 106)
RELOC_NUMBER (R_PPC_EMB_SDA2I16, 107)
RELOC_NUMBER (R_PPC_EMB_SDA2REL, 108)
RELOC_NUMBER (R_PPC_EMB_SDA21, 109)
RELOC_NUMBER (R_PPC_EMB_MRKREF, 110)
RELOC_NUMBER (R_PPC_EMB_RELSEC16, 111)
RELOC_NUMBER (R_PPC_EMB_RELST_LO, 112)
RELOC_NUMBER (R_PPC_EMB_RELST_HI, 113)
RELOC_NUMBER (R_PPC_EMB_RELST_HA, 114)
RELOC_NUMBER (R_PPC_EMB_BIT_FLD, 115)
RELOC_NUMBER (R_PPC_EMB_RELSDA, 116)
/* Support STT_GNU_IFUNC plt calls. */
RELOC_NUMBER (R_PPC_IRELATIVE, 248)
/* These are GNU extensions used in PIC code sequences. */
RELOC_NUMBER (R_PPC_REL16, 249)
RELOC_NUMBER (R_PPC_REL16_LO, 250)
RELOC_NUMBER (R_PPC_REL16_HI, 251)
RELOC_NUMBER (R_PPC_REL16_HA, 252)
/* These are GNU extensions to enable C++ vtable garbage collection. */
RELOC_NUMBER (R_PPC_GNU_VTINHERIT, 253)
RELOC_NUMBER (R_PPC_GNU_VTENTRY, 254)
/* This is a phony reloc to handle any old fashioned TOC16 references
that may still be in object files. */
RELOC_NUMBER (R_PPC_TOC16, 255)
END_RELOC_NUMBERS (R_PPC_max)
#define IS_PPC_TLS_RELOC(R) \
((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA)
/* Specify the value of _GLOBAL_OFFSET_TABLE_. */
#define DT_PPC_GOT (DT_LOPROC)
/* Specify that tls descriptors should be optimized. */
#define DT_PPC_TLSOPT (DT_LOPROC + 1)
/* Processor specific flags for the ELF header e_flags field. */
#define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag. */
#define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag. */
#define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib flag. */
/* Processor specific section headers, sh_type field. */
#define SHT_ORDERED SHT_HIPROC /* Link editor is to sort the \
entries in this section \
based on the address \
specified in the associated \
symbol table entry. */
/* Processor specific section flags, sh_flags field. */
#define SHF_EXCLUDE 0x80000000 /* Link editor is to exclude \
this section from executable \
and shared objects that it \
builds when those objects \
are not to be furhter \
relocated. */
/* Object attribute tags. */
enum
{
/* 0-3 are generic. */
Tag_GNU_Power_ABI_FP = 4, /* Value 1 for hard-float, 2 for
soft-float, 3 for single=precision
hard-float; 0 for not tagged or not
using any ABIs affected by the
differences. */
/* Value 1 for general purpose registers only, 2 for AltiVec
registers, 3 for SPE registers; 0 for not tagged or not using any
ABIs affected by the differences. */
Tag_GNU_Power_ABI_Vector = 8,
/* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes,
2 for ABIs using memory; 0 for not tagged or not using any ABIs
affected by the differences. */
Tag_GNU_Power_ABI_Struct_Return = 12
};
#endif /* _ELF_PPC_H */
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