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old-cross-binutils/elfcpp/powerpc.h
Alan Modra b4f7960d53 PowerPC64 ELFv2 support for gold. 
elfcpp/
	* powerpc.h (EF_PPC64_ABI): New enum constant.
	(STO_PPC64_LOCAL_BIT, STO_PPC64_LOCAL_MASK): Likewise.
	(ppc64_decode_local_entry): New function.
	(ppc64_encode_local_entry): Likewise.
gold/
	* powerpc.cc (Powerpc_relobj::abiversion, set_abiversion,
	ppc64_local_entry_offset, ppc64_local_entry_offset,
	do_read_symbols): New functions.
	(Powerpc_relobj::e_flags_, st_other_): New vars.
	(Powerpc_relobj::Powerpc_relobj): Call set_abiversion.
	(Powerpc_dynobj::abiversion, set_abiversion): New functions.
	(Powerpc_relobj::e_flags_): New var.
	(Target_powerpc::first_plt_entry_offset, plt_entry_size): Inline
	and adjust for ELFv2.
	(Target_powerpc::abiversion, set_abiversion, stk_toc): New functions.
	(Powerpc_relobj::do_find_special_sections): Check no .opd in ELFv2.
	(Powerpc_dynobj::do_find_special_sections): Likewise.
	(Target_powerpc::do_define_standard_symbols): Define ".TOC.".
	(Target_powerpc::Branch_info::make_stub): Adjust stub destination
	to ELFv2 local entry.
	(Target_powerpc::do_relax): No thread safe barriers needed for
	ELFv2.
	(Output_data_plt_powerpc::initial_plt_entry_size_,
	plt_entry_size): Delete.  Replace all uses with
	first_plt_entry_offset() and plt_entry_size().
	(Output_data_plt_powerpc::Output_data_plt_powerpc): Remove
	reserved_size parm.  Update callers.
	(Output_data_plt_powerpc::entry_count): Update.
	(Output_data_plt_powerpc::first_plt_entry_offset): Make private
	and use Target_powerpc::first_plt_entry_offset().
	(Output_data_plt_powerpc::get_plt_entry_size): Similarly and
	rename to plt_entry_size.
	(Output_data_plt_powerpc::add_ifunc_entry,
	add_local_ifunc_entry): Adjust reloc for ELFv2.
	(glink_eh_frame_fde_64): Rename to glink_eh_frame_fde_64v1.
	(glink_eh_frame_fde_64v2): New.
	(Stub_table::plt_call_size): Support ELFv2 sizing.
	(Output_data_glink::add_eh_frame): Use the new FDE.
	(Output_data_glink::set_final_data_size): Adjust for ELFv2 glink.
	(Stub_table::do_write): Write ELFv2 stubs and glink.
	(Target_powerpc::Relocate::relocate): Replaces nop after call
	with ld 2,24(1) and adjust local offset destination for ELFv2.
2013-10-30 13:45:05 +10:30

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// powerpc.h -- ELF definitions specific to EM_PPC and EM_PPC64 -*- C++ -*-
// Copyright 2008, 2010, 2012, 2013 Free Software Foundation, Inc.
// Written by David S. Miller <davem@davemloft.net>.
// This file is part of elfcpp.
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public License
// as published by the Free Software Foundation; either version 2, or
// (at your option) any later version.
// In addition to the permissions in the GNU Library General Public
// License, the Free Software Foundation gives you unlimited
// permission to link the compiled version of this file into
// combinations with other programs, and to distribute those
// combinations without any restriction coming from the use of this
// file. (The Library Public License restrictions do apply in other
// respects; for example, they cover modification of the file, and
/// distribution when not linked into a combined executable.)
// 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
// Library General Public License for more details.
// You should have received a copy of the GNU Library 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.
#ifndef ELFCPP_POWERPC_H
#define ELFCPP_POWERPC_H
namespace elfcpp
{
// The relocation numbers for 32-bit and 64-bit powerpc are nearly
// identical. Therefore I've adopted the convention of using
// R_POWERPC_foo for values which are the same in R_PPC_* and R_PPC64_*.
// For relocations which are specific to the word size I will use
// R_PPC_foo or R_PPC64_foo.
enum
{
R_POWERPC_NONE = 0,
R_POWERPC_ADDR32 = 1,
R_POWERPC_ADDR24 = 2,
R_POWERPC_ADDR16 = 3,
R_POWERPC_ADDR16_LO = 4,
R_POWERPC_ADDR16_HI = 5,
R_POWERPC_ADDR16_HA = 6,
R_POWERPC_ADDR14 = 7,
R_POWERPC_ADDR14_BRTAKEN = 8,
R_POWERPC_ADDR14_BRNTAKEN = 9,
R_POWERPC_REL24 = 10,
R_POWERPC_REL14 = 11,
R_POWERPC_REL14_BRTAKEN = 12,
R_POWERPC_REL14_BRNTAKEN = 13,
R_POWERPC_GOT16 = 14,
R_POWERPC_GOT16_LO = 15,
R_POWERPC_GOT16_HI = 16,
R_POWERPC_GOT16_HA = 17,
R_PPC_PLTREL24 = 18,
R_POWERPC_COPY = 19,
R_POWERPC_GLOB_DAT = 20,
R_POWERPC_JMP_SLOT = 21,
R_POWERPC_RELATIVE = 22,
R_PPC_LOCAL24PC = 23,
R_POWERPC_UADDR32 = 24,
R_POWERPC_UADDR16 = 25,
R_POWERPC_REL32 = 26,
R_POWERPC_PLT32 = 27,
R_POWERPC_PLTREL32 = 28,
R_POWERPC_PLT16_LO = 29,
R_POWERPC_PLT16_HI = 30,
R_POWERPC_PLT16_HA = 31,
R_PPC_SDAREL16 = 32,
R_POWERPC_SECTOFF = 33,
R_POWERPC_SECTOFF_LO = 34,
R_POWERPC_SECTOFF_HI = 35,
R_POWERPC_SECTOFF_HA = 36,
R_POWERPC_ADDR30 = 37,
R_PPC64_ADDR64 = 38,
R_PPC64_ADDR16_HIGHER = 39,
R_PPC64_ADDR16_HIGHERA = 40,
R_PPC64_ADDR16_HIGHEST = 41,
R_PPC64_ADDR16_HIGHESTA = 42,
R_PPC64_UADDR64 = 43,
R_PPC64_REL64 = 44,
R_PPC64_PLT64 = 45,
R_PPC64_PLTREL64 = 46,
R_PPC64_TOC16 = 47,
R_PPC64_TOC16_LO = 48,
R_PPC64_TOC16_HI = 49,
R_PPC64_TOC16_HA = 50,
R_PPC64_TOC = 51,
R_PPC64_PLTGOT16 = 52,
R_PPC64_PLTGOT16_LO = 53,
R_PPC64_PLTGOT16_HI = 54,
R_PPC64_PLTGOT16_HA = 55,
R_PPC64_ADDR16_DS = 56,
R_PPC64_ADDR16_LO_DS = 57,
R_PPC64_GOT16_DS = 58,
R_PPC64_GOT16_LO_DS = 59,
R_PPC64_PLT16_LO_DS = 60,
R_PPC64_SECTOFF_DS = 61,
R_PPC64_SECTOFF_LO_DS = 62,
R_PPC64_TOC16_DS = 63,
R_PPC64_TOC16_LO_DS = 64,
R_PPC64_PLTGOT16_DS = 65,
R_PPC64_PLTGOT16_LO_DS = 66,
R_POWERPC_TLS = 67,
R_POWERPC_DTPMOD = 68,
R_POWERPC_TPREL16 = 69,
R_POWERPC_TPREL16_LO = 70,
R_POWERPC_TPREL16_HI = 71,
R_POWERPC_TPREL16_HA = 72,
R_POWERPC_TPREL = 73,
R_POWERPC_DTPREL16 = 74,
R_POWERPC_DTPREL16_LO = 75,
R_POWERPC_DTPREL16_HI = 76,
R_POWERPC_DTPREL16_HA = 77,
R_POWERPC_DTPREL = 78,
R_POWERPC_GOT_TLSGD16 = 79,
R_POWERPC_GOT_TLSGD16_LO = 80,
R_POWERPC_GOT_TLSGD16_HI = 81,
R_POWERPC_GOT_TLSGD16_HA = 82,
R_POWERPC_GOT_TLSLD16 = 83,
R_POWERPC_GOT_TLSLD16_LO = 84,
R_POWERPC_GOT_TLSLD16_HI = 85,
R_POWERPC_GOT_TLSLD16_HA = 86,
R_POWERPC_GOT_TPREL16 = 87,
R_POWERPC_GOT_TPREL16_LO = 88,
R_POWERPC_GOT_TPREL16_HI = 89,
R_POWERPC_GOT_TPREL16_HA = 90,
R_POWERPC_GOT_DTPREL16 = 91,
R_POWERPC_GOT_DTPREL16_LO = 92,
R_POWERPC_GOT_DTPREL16_HI = 93,
R_POWERPC_GOT_DTPREL16_HA = 94,
R_PPC_TLSGD = 95,
R_PPC64_TPREL16_DS = 95,
R_PPC_TLSLD = 96,
R_PPC64_TPREL16_LO_DS = 96,
R_PPC64_TPREL16_HIGHER = 97,
R_PPC64_TPREL16_HIGHERA = 98,
R_PPC64_TPREL16_HIGHEST = 99,
R_PPC64_TPREL16_HIGHESTA = 100,
R_PPC_EMB_NADDR32 = 101,
R_PPC64_DTPREL16_DS = 101,
R_PPC_EMB_NADDR16 = 102,
R_PPC64_DTPREL16_LO_DS = 102,
R_PPC_EMB_NADDR16_LO = 103,
R_PPC64_DTPREL16_HIGHER = 103,
R_PPC_EMB_NADDR16_HI = 104,
R_PPC64_DTPREL16_HIGHERA = 104,
R_PPC_EMB_NADDR16_HA = 105,
R_PPC64_DTPREL16_HIGHEST = 105,
R_PPC_EMB_SDAI16 = 106,
R_PPC64_DTPREL16_HIGHESTA = 106,
R_PPC_EMB_SDA2I16 = 107,
R_PPC64_TLSGD = 107,
R_PPC_EMB_SDA2REL = 108,
R_PPC64_TLSLD = 108,
R_PPC_EMB_SDA21 = 109,
R_PPC64_TOCSAVE = 109,
R_PPC_EMB_MRKREF = 110,
R_PPC64_ADDR16_HIGH = 110,
R_PPC_EMB_RELSEC16 = 111,
R_PPC64_ADDR16_HIGHA = 111,
R_PPC_EMB_RELST_LO = 112,
R_PPC64_TPREL16_HIGH = 112,
R_PPC_EMB_RELST_HI = 113,
R_PPC64_TPREL16_HIGHA = 113,
R_PPC_EMB_RELST_HA = 114,
R_PPC64_DTPREL16_HIGH = 114,
R_PPC_EMB_BIT_FLD = 115,
R_PPC64_DTPREL16_HIGHA = 115,
R_PPC_EMB_RELSDA = 116,
R_PPC_VLE_REL8 = 216,
R_PPC_VLE_REL15 = 217,
R_PPC_VLE_REL24 = 218,
R_PPC_VLE_LO16A = 219,
R_PPC_VLE_LO16D = 220,
R_PPC_VLE_HI16A = 221,
R_PPC_VLE_HI16D = 222,
R_PPC_VLE_HA16A = 223,
R_PPC_VLE_HA16D = 224,
R_PPC_VLE_SDA21 = 225,
R_PPC_VLE_SDA21_LO = 226,
R_PPC_VLE_SDAREL_LO16A = 227,
R_PPC_VLE_SDAREL_LO16D = 228,
R_PPC_VLE_SDAREL_HI16A = 229,
R_PPC_VLE_SDAREL_HI16D = 230,
R_PPC_VLE_SDAREL_HA16A = 231,
R_PPC_VLE_SDAREL_HA16D = 232,
R_PPC64_JMP_IREL = 247,
R_POWERPC_IRELATIVE = 248,
R_POWERPC_REL16 = 249,
R_POWERPC_REL16_LO = 250,
R_POWERPC_REL16_HI = 251,
R_POWERPC_REL16_HA = 252,
R_POWERPC_GNU_VTINHERIT = 253,
R_POWERPC_GNU_VTENTRY = 254,
R_PPC_TOC16 = 255,
};
// e_flags values defined for powerpc
enum
{
EF_PPC_EMB = 0x80000000, // PowerPC embedded flag.
EF_PPC_RELOCATABLE = 0x00010000, // PowerPC -mrelocatable flag. */
EF_PPC_RELOCATABLE_LIB = 0x00008000, // PowerPC -mrelocatable-lib flag. */
};
// e_flags values defined for powerpc64
enum
{
// ABI version
// 1 for original function descriptor using ABI,
// 2 for revised ABI without function descriptors,
// 0 for unspecified or not using any features affected by the differences.
EF_PPC64_ABI = 3
};
enum
{
// The ELFv2 ABI uses three bits in the symbol st_other field of a
// function definition to specify the number of instructions between a
// function's global entry point and local entry point.
// The global entry point is used when it is necessary to set up the
// toc pointer (r2) for the function. Callers must enter the global
// entry point with r12 set to the global entry point address. On
// return from the function, r2 may have a different value to that
// which it had on entry.
// The local entry point is used when r2 is known to already be valid
// for the function. There is no requirement on r12 when using the
// local entry point, and on return r2 will contain the same value as
// at entry.
// A value of zero in these bits means that the function has a single
// entry point with no requirement on r12 or r2, and that on return r2
// will contain the same value as at entry.
// Values of one and seven are reserved.
STO_PPC64_LOCAL_BIT = 5,
STO_PPC64_LOCAL_MASK = 0xE0
};
// 3 bit other field to bytes.
static inline unsigned int
ppc64_decode_local_entry(unsigned int other)
{
return ((1 << other) >> 2) << 2;
}
// bytes to field value.
static inline unsigned int
ppc64_encode_local_entry(unsigned int val)
{
return (val >= 4 * 4
? (val >= 8 * 4
? (val >= 16 * 4 ? 6 : 5)
: 4)
: (val >= 2 * 4
? 3
: (val >= 1 * 4 ? 2 : 0)));
}
} // End namespace elfcpp.
#endif // !defined(ELFCPP_POWERPC_H)
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