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darling-gdb/elfcpp/sparc.h
David S. Miller 8c2bf391c4 gold: Add sparc IFUNC support to Gold. 
elfcpp/

	* sparc.h (R_SPARC_JMP_IREL): New relocation.

gold/

	* sparc.cc (class Target_sparc): Add rela_ifunc_.
	(Target_sparc::Target_sparc): Initialize new field.
	(Target_sparc::do_plt_section_for_global): New function.
	(Target_sparc::do_plt_section_for_local): New function.
	(Target_sparc::reloc_needs_plt_for_ifunc): New function.
	(Target_sparc::make_plt_section): New function, broken out of
	make_plt_entry.  Use ORDER_NON_RELRO_FIRST for ".plt".
	(Target_sparc::make_plt_entry): Call make_plt_section.
	(Target_sparc::make_local_ifunc_plt_entry): New function.
	(Target_sparc::rela_ifunc_section): New function.
	(Target_sparc::plt_section): Remove const.
	(Output_data_plt_sparc): Update declarations.  Define Global_ifunc
	and Local_ifunc types.  Add global_ifuncs_, local_ifuncs_, ifunc_rel_,
	and ifunc_count_ fields.
	(Output_data_plt_sparc::Output_data_plt_sparc): Initialize new fields.
	(Output_data_plt_sparc::add_entry): Handle IFUNC symbols.
	(Output_data_plt_sparc::add_local_ifunc_entry): New function.
	(Output_data_plt_sparc::rela_ifunc): New function.
	(Output_data_plt_sparc::emit_pending_ifunc_relocs): New function.
	(Output_data_plt_sparc::has_ifunc_section): New function.
	(Output_data_plt_sparc::entry_count): Include ifunc_count_.
	(Output_data_plt_sparc::address_for_global): New function.
	(Output_data_plt_sparc::address_for_local): New function.
	(Output_data_plt_sparc::plt_index_to_offset): New function.
	(Output_data_plt_sparc::set_final_data_size): Use plt_index_to_offset
	and entry_count.
	(Output_data_plt_sparc::do_write): Use first_plt_entry_offset and
	entry_count.
	(Target_sparc::Scan::get_reference_flags): Add R_SPARC_IRELATIVE and
	R_SPARC_JMP_IREL to switch.
	(Target_sparc::Scan::check_non_pic): Likewise.
	(Target_sparc::Scan::local): Handle IFUNC symbols.
	(Target_sparc::Scan::local): Likewise.
	(Target_sparc::Relocate::relocate): Likewise, use plt_address_for_global
	and plt_address_for_local.
	(Target_sparc::do_finalize_sections): Call emit_pending_ifunc_relocs.
	Define __rel_iplt_start and __rel_iplt_end if doing a static link.
2012-04-17 01:57:23 +00:00

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// sparc.h -- ELF definitions specific to EM_SPARC -*- C++ -*-
// Copyright 2008, 2010 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_SPARC_H
#define ELFCPP_SPARC_H
// Documentation for the TLS relocs is taken from
// http://people.redhat.com/drepper/tls.pdf
//
// More full documentation on sparc specific ELF file
// format details can be found at
//
// http://docs.sun.com/app/docs/doc/819/0690/
// "Linker and Libraries Guide"
//
// specifically Chapter 7 "Object File Format" and
// Chapter 8 "Thread-Local Storage"
namespace elfcpp
{
enum
{
R_SPARC_NONE = 0, // No reloc
R_SPARC_8 = 1, // Direct 8 bit
R_SPARC_16 = 2, // Direct 16 bit
R_SPARC_32 = 3, // Direct 32 bit
R_SPARC_DISP8 = 4, // PC relative 8 bit
R_SPARC_DISP16 = 5, // PC relative 16 bit
R_SPARC_DISP32 = 6, // PC relative 32 bit
R_SPARC_WDISP30 = 7, // PC relative 30 bit shifted
R_SPARC_WDISP22 = 8, // PC relative 22 bit shifted
R_SPARC_HI22 = 9, // High 22 bit
R_SPARC_22 = 10, // Direct 22 bit
R_SPARC_13 = 11, // Direct 13 bit
R_SPARC_LO10 = 12, // Truncated 10 bit
R_SPARC_GOT10 = 13, // Truncated 10 bit GOT entry
R_SPARC_GOT13 = 14, // 13 bit GOT entry
R_SPARC_GOT22 = 15, // 22 bit GOT entry shifted
R_SPARC_PC10 = 16, // PC relative 10 bit truncated
R_SPARC_PC22 = 17, // PC relative 22 bit shifted
R_SPARC_WPLT30 = 18, // 30 bit PC relative PLT address
R_SPARC_COPY = 19, // Copy symbol at runtime
R_SPARC_GLOB_DAT = 20, // Create GOT entry
R_SPARC_JMP_SLOT = 21, // Create PLT entry
R_SPARC_RELATIVE = 22, // Adjust by program base
R_SPARC_UA32 = 23, // Direct 32 bit unaligned
R_SPARC_PLT32 = 24, // Direct 32 bit ref to PLT entry
R_SPARC_HIPLT22 = 25, // High 22 bit PLT entry
R_SPARC_LOPLT10 = 26, // Truncated 10 bit PLT entry
R_SPARC_PCPLT32 = 27, // PC rel 32 bit ref to PLT entry
R_SPARC_PCPLT22 = 28, // PC rel high 22 bit PLT entry
R_SPARC_PCPLT10 = 29, // PC rel trunc 10 bit PLT entry
R_SPARC_10 = 30, // Direct 10 bit
R_SPARC_11 = 31, // Direct 11 bit
R_SPARC_64 = 32, // Direct 64 bit
R_SPARC_OLO10 = 33, // 10bit with secondary 13bit addend
R_SPARC_HH22 = 34, // Top 22 bits of direct 64 bit
R_SPARC_HM10 = 35, // High middle 10 bits of ...
R_SPARC_LM22 = 36, // Low middle 22 bits of ...
R_SPARC_PC_HH22 = 37, // Top 22 bits of pc rel 64 bit
R_SPARC_PC_HM10 = 38, // High middle 10 bit of ...
R_SPARC_PC_LM22 = 39, // Low miggle 22 bits of ...
R_SPARC_WDISP16 = 40, // PC relative 16 bit shifted
R_SPARC_WDISP19 = 41, // PC relative 19 bit shifted
R_SPARC_GLOB_JMP = 42, // was part of v9 ABI but was removed
R_SPARC_7 = 43, // Direct 7 bit
R_SPARC_5 = 44, // Direct 5 bit
R_SPARC_6 = 45, // Direct 6 bit
R_SPARC_DISP64 = 46, // PC relative 64 bit
R_SPARC_PLT64 = 47, // Direct 64 bit ref to PLT entry
R_SPARC_HIX22 = 48, // High 22 bit complemented
R_SPARC_LOX10 = 49, // Truncated 11 bit complemented
R_SPARC_H44 = 50, // Direct high 12 of 44 bit
R_SPARC_M44 = 51, // Direct mid 22 of 44 bit
R_SPARC_L44 = 52, // Direct low 10 of 44 bit
R_SPARC_REGISTER = 53, // Global register usage
R_SPARC_UA64 = 54, // Direct 64 bit unaligned
R_SPARC_UA16 = 55, // Direct 16 bit unaligned
R_SPARC_TLS_GD_HI22 = 56, // Initial General Dynamic reloc, high 22-bit
R_SPARC_TLS_GD_LO10 = 57, // Initial General Dynamic reloc, low 10-bit
R_SPARC_TLS_GD_ADD = 58, // Initial General Dynamic reloc, add
R_SPARC_TLS_GD_CALL = 59, // Initial General Dynamic reloc, call
R_SPARC_TLS_LDM_HI22 = 60, // Initial Local Dynamic reloc, high 22-bit
R_SPARC_TLS_LDM_LO10 = 61, // Initial Local Dynamic reloc, low 10-bit
R_SPARC_TLS_LDM_ADD = 62, // Initial Local Dynamic reloc, add
R_SPARC_TLS_LDM_CALL = 63, // Initial Local Dynamic reloc, call
R_SPARC_TLS_LDO_HIX22 = 64, // Initial Local Dynamic, high extended 22-bit
R_SPARC_TLS_LDO_LOX10 = 65, // Initial Local Dynamic, low extended 10-bit
R_SPARC_TLS_LDO_ADD = 66, // Initial Local Dynamic, add extended
R_SPARC_TLS_IE_HI22 = 67, // Initial Initial Exec reloc, high 22-bit
R_SPARC_TLS_IE_LO10 = 68, // Initial Initial Exec reloc, low 10-bit
R_SPARC_TLS_IE_LD = 69, // Initial Initial Exec reloc, load 32-bit
R_SPARC_TLS_IE_LDX = 70, // Initial Initial Exec reloc, load 64-bit
R_SPARC_TLS_IE_ADD = 71, // Initial Initial Exec reloc, add
R_SPARC_TLS_LE_HIX22 = 72, // Initial Local Exec reloc, high extended 22-bit
R_SPARC_TLS_LE_LOX10 = 73, // Initial Local Exec reloc, low extended 10-bit
R_SPARC_TLS_DTPMOD32 = 74, // Outstanding General/Local Dynamic reloc, 32-bit
R_SPARC_TLS_DTPMOD64 = 75, // Outstanding General/Local Dynamic reloc, 64-bit
R_SPARC_TLS_DTPOFF32 = 76, // Outstanding General Dynamic reloc, 32-bit
R_SPARC_TLS_DTPOFF64 = 77, // Outstanding General Dynamic reloc, 64-bit
R_SPARC_TLS_TPOFF32 = 78, // Outstanding Initial Exec reloc, 32-bit
R_SPARC_TLS_TPOFF64 = 79, // Outstanding Initial Exec reloc, 64-bit
// GOT data code transformations
R_SPARC_GOTDATA_HIX22 = 80,
R_SPARC_GOTDATA_LOX10 = 81,
R_SPARC_GOTDATA_OP_HIX22 = 82,
R_SPARC_GOTDATA_OP_LOX10 = 83,
R_SPARC_GOTDATA_OP = 84,
R_SPARC_H34 = 85, // Direct high 12 of 34 bit
R_SPARC_SIZE32 = 86, // size of symbol, 32-bit
R_SPARC_SIZE64 = 87, // size of symbol, 64-bit
R_SPARC_WDISP10 = 88, // PC relative 10 bit shifted
R_SPARC_JMP_IREL = 248, // Create PLT slot to IFUNC function
R_SPARC_IRELATIVE = 249, // Adjust indirectly by program base
// GNU vtable garbage collection extensions.
R_SPARC_GNU_VTINHERIT = 250,
R_SPARC_GNU_VTENTRY = 251,
R_SPARC_REV32 = 252,
};
// e_flags values defined for sparc
enum
{
EF_SPARC_EXT_MASK = 0xffff00, // reserved for vendor extensions
EF_SPARC_32PLUS_MASK = 0xffff00, // bits indicating V8+ type
EF_SPARC_32PLUS = 0x000100, // generic V8+ features
EF_SPARC_SUN_US1 = 0x000200, // Sun UltraSPARC-I extensions
EF_SPARC_HAL_R1 = 0x000400, // HAL R1 extensions
EF_SPARC_SUN_US3 = 0x000800, // Sun UltraSPARC-III extensions
EF_SPARC_LEDATA = 0x800000, // little endian data
EF_SPARCV9_MM = 0x3, // memory model mask
EF_SPARCV9_TSO = 0x0, // total store ordering
EF_SPARCV9_PSO = 0x1, // partial store ordering
EF_SPARCV9_RMO = 0x2, // relaxed store ordering
};
} // End namespace elfcpp.
#endif // !defined(ELFCPP_SPARC_H)
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