// i386.h -- ELF definitions specific to EM_386 -*- C++ -*-
-// Copyright 2006, 2007, Free Software Foundation, Inc.
+// Copyright (C) 2006-2021 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of elfcpp.
#ifndef ELFCPP_I386_H
#define ELFCPP_I386_H
+// Documentation for the TLS relocs is taken from
+// http://people.redhat.com/drepper/tls.pdf
+// http://www.lsd.ic.unicamp.br/~oliva/writeups/TLS/RFC-TLSDESC-x86.txt
+
namespace elfcpp
{
enum
{
- R_386_NONE = 0,
- R_386_32 = 1,
- R_386_PC32 = 2,
- R_386_GOT32 = 3,
- R_386_PLT32 = 4,
- R_386_COPY = 5,
- R_386_GLOB_DAT = 6,
- R_386_JUMP_SLOT = 7,
- R_386_RELATIVE = 8,
- R_386_GOTOFF = 9,
- R_386_GOTPC = 10,
+ R_386_NONE = 0, // No reloc
+ R_386_32 = 1, // Direct 32 bit zero extended
+ R_386_PC32 = 2, // PC relative 32 bit signed
+ R_386_GOT32 = 3, // 32 bit GOT entry
+ R_386_PLT32 = 4, // 32 bit PLT address
+ R_386_COPY = 5, // Copy symbol at runtime
+ R_386_GLOB_DAT = 6, // Create GOT entry
+ R_386_JUMP_SLOT = 7, // Create PLT entry
+ R_386_RELATIVE = 8, // Adjust by program base
+ R_386_GOTOFF = 9, // 32-bit GOT offset
+ R_386_GOTPC = 10, // 32-bit PC relative offset to GOT
// Used by Sun.
R_386_32PLT = 11,
// TLS extensions.
- R_386_TLS_TPOFF = 14,
- R_386_TLS_IE = 15,
- R_386_TLS_GOTIE = 16,
- R_386_TLS_LE = 17,
- R_386_TLS_GD = 18,
- R_386_TLS_LDM = 19,
+ R_386_TLS_TPOFF = 14, // Outstanding Initial Exec reloc, gnu-style (both)
+ R_386_TLS_IE = 15, // Initial Initial Exec reloc, gnu-style (no-PIC)
+ R_386_TLS_GOTIE = 16, // Initial Initial Exec reloc, gnu-style (for PIC)
+ R_386_TLS_LE = 17, // Initial Local Exec reloc, gnu-style
+ R_386_TLS_GD = 18, // Initial General Dynamic reloc, gnu-style
+ R_386_TLS_LDM = 19, // Initial Local Dynamic reloc, gnu-style
// GNU extensions.
- R_386_16 = 20,
- R_386_PC16 = 21,
- R_386_8 = 22,
- R_386_PC8 = 23,
+ R_386_16 = 20, // Direct 16 bit zero extended
+ R_386_PC16 = 21, // 16 bit sign extended pc relative
+ R_386_8 = 22, // Direct 8 bit sign extended
+ R_386_PC8 = 23, // 8 bit sign extended pc relative
// More TLS relocs.
- R_386_TLS_GD_32 = 24,
- R_386_TLS_GD_PUSH = 25,
- R_386_TLS_GD_CALL = 26,
- R_386_TLS_GD_POP = 27,
- R_386_TLS_LDM_32 = 28,
- R_386_TLS_LDM_PUSH = 29,
- R_386_TLS_LDM_CALL = 30,
- R_386_TLS_LDM_POP = 31,
- R_386_TLS_LDO_32 = 32,
- R_386_TLS_IE_32 = 33,
- R_386_TLS_LE_32 = 34,
- R_386_TLS_DTPMOD32 = 35,
- R_386_TLS_DTPOFF32 = 36,
- R_386_TLS_TPOFF32 = 37,
- R_386_TLS_GOTDESC = 39,
- R_386_TLS_DESC_CALL = 40,
- R_386_TLS_DESC = 41,
+ R_386_TLS_GD_32 = 24, // Initial General Dynamic reloc, sun-style
+ R_386_TLS_GD_PUSH = 25, // Initial General Dynamic reloc, sun-style
+ R_386_TLS_GD_CALL = 26, // Initial General Dynamic reloc, sun-style
+ R_386_TLS_GD_POP = 27, // Initial General Dynamic reloc, sun-style
+ R_386_TLS_LDM_32 = 28, // Initial Local Dynamic reloc, sun-style
+ R_386_TLS_LDM_PUSH = 29, // Initial Local Dynamic reloc, sun-style
+ R_386_TLS_LDM_CALL = 30, // Initial Local Dynamic reloc, sun-style
+ R_386_TLS_LDM_POP = 31, // Initial Local Dynamic reloc, sun-style
+ R_386_TLS_LDO_32 = 32, // Initial Local Dynamic reloc, sun+gnu styles
+ R_386_TLS_IE_32 = 33, // Initial Initial Exec reloc, sun-style
+ R_386_TLS_LE_32 = 34, // Initial Local Exec reloc, sun-style
+ R_386_TLS_DTPMOD32 = 35, // Outstanding General/Local Dynamic reloc, sun+gnu
+ R_386_TLS_DTPOFF32 = 36, // Outstanding General Dynamic reloc, sun+gnu
+ R_386_TLS_TPOFF32 = 37, // Outstanding Initial Exec reloc, sun-style
+ R_386_TLS_GOTDESC = 39, // GOT offset for TLS descriptor
+ R_386_TLS_DESC_CALL = 40, // Marker of call through TLS desc for relaxation
+ R_386_TLS_DESC = 41, // TLS descriptor containing pointer to code and
+ // to argument, returning TLS offset for symbol
+ R_386_IRELATIVE = 42, // Adjust indirectly by program base
+ R_386_GOT32X = 43, // 32 bit GOT entry, relaxable
// Used by Intel.
R_386_USED_BY_INTEL_200 = 200,
// GNU vtable garbage collection extensions.
projects / deliverable / binutils-gdb.git / blobdiff