[llvm] r269404 - [Support/ELF] - Added few constants and structs relative to compressed sections.
George Rimar via llvm-commits
llvm-commits at lists.llvm.org
Fri May 13 03:20:12 PDT 2016
Author: grimar
Date: Fri May 13 05:20:12 2016
New Revision: 269404
URL: http://llvm.org/viewvc/llvm-project?rev=269404&view=rev
Log:
[Support/ELF] - Added few constants and structs relative to compressed sections.
Patch adds few constants and structs to support compressed sections.
SHF_COMPRESSED intersects with platform specific XCORE_SHF_CP_SECTION,
both has value of 0x800U.
Reference link:
http://www.sco.com/developers/gabi/latest/ch4.sheader.html
Differential revision: http://reviews.llvm.org/D20209
Modified:
llvm/trunk/include/llvm/Support/ELF.h
Modified: llvm/trunk/include/llvm/Support/ELF.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/ELF.h?rev=269404&r1=269403&r2=269404&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/ELF.h (original)
+++ llvm/trunk/include/llvm/Support/ELF.h Fri May 13 05:20:12 2016
@@ -740,6 +740,9 @@ enum : unsigned {
// This section holds Thread-Local Storage.
SHF_TLS = 0x400U,
+ // Identifies a section containing compressed data.
+ SHF_COMPRESSED = 0x800U,
+
// This section is excluded from the final executable or shared library.
SHF_EXCLUDE = 0x80000000U,
@@ -1315,6 +1318,30 @@ enum {
NT_GNU_BUILD_ID = 3
};
+// Compressed section header for ELF32.
+struct Elf32_Chdr {
+ Elf32_Word ch_type;
+ Elf32_Word ch_size;
+ Elf32_Word ch_addralign;
+};
+
+// Compressed section header for ELF64.
+struct Elf64_Chdr {
+ Elf64_Word ch_type;
+ Elf64_Word ch_reserved;
+ Elf64_Xword ch_size;
+ Elf64_Xword ch_addralign;
+};
+
+// Legal values for ch_type field of compressed section header.
+enum {
+ ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm.
+ ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific.
+ ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific.
+ ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific.
+ ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific.
+};
+
} // end namespace ELF
} // end namespace llvm
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