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Re: [PATCH]: Sparc elfcpp.
From: Ian Lance Taylor <iant@google.com>
Date: Fri, 11 Apr 2008 11:44:19 -0700
> David Miller <davem@davemloft.net> writes:
>
> > 2008-04-10 David S. Miller <davem@davemloft.net>
> >
> > * sparc.h: New file
> > * elfcpp.h (SHN_BEFORE, SHN_AFTER): New enum constants.
> > (SHT_SPARC_GOTDATA, SHF_ORDERED, SHF_EXCLUDE,
> > STT_SPARC_REGISTER, DT_SPARC_REGISTER): Likewise.
>
> This is OK if you add comments for the new entries in elfcpp.h.
>
> It would also be nice to have some references for sparc.h, like the
> comments after the license boilerplate in i386.h and x86_64.h.
Fair enough, committed as follows:
elfcpp/
2008-04-11 David S. Miller <davem@davemloft.net>
* sparc.h: New file
* elfcpp.h (SHN_BEFORE, SHN_AFTER): New enum constants.
(SHT_SPARC_GOTDATA, SHF_ORDERED, SHF_EXCLUDE,
STT_SPARC_REGISTER, DT_SPARC_REGISTER): Likewise.
--- /dev/null 2008-03-03 20:22:44.000000000 -0800
+++ sparc.h 2008-04-11 12:00:50.000000000 -0700
@@ -0,0 +1,153 @@
+// sparc.h -- ELF definitions specific to EM_SPARC -*- C++ -*-
+
+// Copyright 2008, 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
+
+ // GNU vtable garbage collection extensions.
+ R_SPARC_GNU_VTINHERIT = 250,
+ R_SPARC_GNU_VTENTRY = 251,
+
+ R_SPARC_REV32 = 252,
+};
+
+} // End namespace elfcpp.
+
+#endif // !defined(ELFCPP_SPARC_H)
Index: elfcpp.h
===================================================================
RCS file: /cvs/src/src/elfcpp/elfcpp.h,v
retrieving revision 1.15
diff -u -p -r1.15 elfcpp.h
--- elfcpp.h 25 Mar 2008 05:00:01 -0000 1.15
+++ elfcpp.h 11 Apr 2008 19:04:16 -0000
@@ -315,7 +315,12 @@ enum
SHN_ABS = 0xfff1,
SHN_COMMON = 0xfff2,
SHN_XINDEX = 0xffff,
- SHN_HIRESERVE = 0xffff
+ SHN_HIRESERVE = 0xffff,
+
+ // Provide for initial and final section ordering in conjunction
+ // with the SHF_LINK_ORDER and SHF_ORDERED section flags.
+ SHN_BEFORE = 0xff00,
+ SHN_AFTER = 0xff01,
};
// The valid values found in the Shdr sh_type field.
@@ -361,6 +366,8 @@ enum SHT
// Symbol versions,
SHT_SUNW_versym = 0x6fffffff,
SHT_GNU_versym = 0x6fffffff,
+
+ SHT_SPARC_GOTDATA = 0x70000000,
};
// The valid bit flags found in the Shdr sh_flags field.
@@ -378,7 +385,19 @@ enum SHF
SHF_GROUP = 0x200,
SHF_TLS = 0x400,
SHF_MASKOS = 0x0ff00000,
- SHF_MASKPROC = 0xf0000000
+ SHF_MASKPROC = 0xf0000000,
+
+ // Indicates this section requires ordering in relation to
+ // other sections of the same type. Ordered sections are
+ // combined within the section pointed to by the sh_link entry.
+ // The sh_info values SHN_BEFORE and SHN_AFTER imply that the
+ // sorted section is to precede or follow, respectively, all
+ // other sections in the set being ordered.
+ SHF_ORDERED = 0x40000000,
+ // This section is excluded from input to the link-edit of an
+ // executable or shared object. This flag is ignored if SHF_ALLOC
+ // is also set, or if relocations exist against the section.
+ SHF_EXCLUDE = 0x80000000,
};
// Bit flags which appear in the first 32-bit word of the section data
@@ -455,7 +474,11 @@ enum STT
STT_LOOS = 10,
STT_HIOS = 12,
STT_LOPROC = 13,
- STT_HIPROC = 15
+ STT_HIPROC = 15,
+
+ // The section type that must be used for register symbols on
+ // Sparc. These symbols initialize a global register.
+ STT_SPARC_REGISTER = 13,
};
inline STB
@@ -644,6 +667,11 @@ enum DT
DT_VERSYM = 0x6ffffff0,
+ // The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB
+ // symbol table. One dynamic entry exists for every STT_SPARC_REGISTER
+ // symbol in the symbol table.
+ DT_SPARC_REGISTER = 0x70000001,
+
DT_AUXILIARY = 0x7ffffffd,
DT_USED = 0x7ffffffe,
DT_FILTER = 0x7fffffff