include/elf:
authorIan Lance Taylor <ian@airs.com>
Fri, 20 Mar 2009 23:37:51 +0000 (23:37 +0000)
committerIan Lance Taylor <ian@airs.com>
Fri, 20 Mar 2009 23:37:51 +0000 (23:37 +0000)
* common.h (SHT_GNU_INCREMENTAL_INPUTS): Define.
elfcpp:
* elfcpp.h (SHT_GNU_INCREMENTAL_INPUTS): Define.
gold:
* incremental.cc: New file.
* Makefile.am (CCFILES): Add incremental.cc.
* Makefile.in: Rebuild.

elfcpp/ChangeLog
elfcpp/elfcpp.h
gold/ChangeLog
gold/Makefile.am
gold/Makefile.in
gold/incremental.cc [new file with mode: 0644]
include/elf/ChangeLog
include/elf/common.h

index 5674d1573bbaeaa8200bedb77ee7f7fe78fe55c3..9f048dda52f3b6eb066aa289a0b28cfba239c67f 100644 (file)
@@ -1,3 +1,7 @@
+2009-03-20  Mikolaj Zalewski  <mikolajz@google.com>
+
+       * elfcpp.h (SHT_GNU_INCREMENTAL_INPUTS): Define.
+
 2009-03-01  Ian Lance Taylor  <iant@google.com>
 
        * elfcpp_swap.h: #include "config.h".  Only #include <byteswap.h>
index 46306e785888a6814841c92e232945a0244325a5..a3786de8fe84a44ab969989ee0db80e188dc74a0 100644 (file)
@@ -4,7 +4,7 @@
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // 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
@@ -351,6 +351,8 @@ enum SHT
   SHT_LOUSER = 0x80000000,
   SHT_HIUSER = 0xffffffff,
   // The remaining values are not in the standard.
+  // Incremental build data.
+  SHT_GNU_INCREMENTAL_INPUTS = 0x6fff4700,
   // Object attributes.
   SHT_GNU_ATTRIBUTES = 0x6ffffff5,
   // GNU style dynamic hash table.
@@ -934,7 +936,7 @@ class Ehdr_write
   void
   put_e_type(Elf_Half v)
   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
-  
+
   void
   put_e_machine(Elf_Half v)
   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
index a736dcbb680529b8ca6cce46e9121da33e78db5e..1297e19e028b15d0ad1847b5d92571631bc76e26 100644 (file)
@@ -1,3 +1,9 @@
+2009-03-20  Mikolaj Zalewski  <mikolajz@google.com>
+
+       * incremental.cc: New file.
+       * Makefile.am (CCFILES): Add incremental.cc.
+       * Makefile.in: Rebuild.
+
 2009-03-19  Paul Pluzhnikov  <ppluzhnikov@google.com>
 
        * layout.cc (Layout::output_section_name): Preserve names
index aab1528807878dbefd4020a07c2d96d5109297d3..36c88e79f4d4f0c4d3c7c4b41ffdacaf3a39e694 100644 (file)
@@ -51,6 +51,7 @@ CCFILES = \
         gc.cc \
        gold.cc \
        gold-threads.cc \
+       incremental.cc \
        layout.cc \
        mapfile.cc \
        merge.cc \
index cb49fef2a73e367f1a3337c4d3e0615922564462..76632dafe1c99b97af277061b85aba1ff04ad305 100644 (file)
@@ -80,13 +80,14 @@ am__objects_1 = archive.$(OBJEXT) binary.$(OBJEXT) common.$(OBJEXT) \
        dirsearch.$(OBJEXT) dynobj.$(OBJEXT) dwarf_reader.$(OBJEXT) \
        ehframe.$(OBJEXT) errors.$(OBJEXT) expression.$(OBJEXT) \
        fileread.$(OBJEXT) gc.$(OBJEXT) gold.$(OBJEXT) \
-       gold-threads.$(OBJEXT) layout.$(OBJEXT) mapfile.$(OBJEXT) \
-       merge.$(OBJEXT) object.$(OBJEXT) options.$(OBJEXT) \
-       output.$(OBJEXT) parameters.$(OBJEXT) plugin.$(OBJEXT) \
-       readsyms.$(OBJEXT) reduced_debug_output.$(OBJEXT) \
-       reloc.$(OBJEXT) resolve.$(OBJEXT) script-sections.$(OBJEXT) \
-       script.$(OBJEXT) stringpool.$(OBJEXT) symtab.$(OBJEXT) \
-       target-select.$(OBJEXT) version.$(OBJEXT) workqueue.$(OBJEXT) \
+       gold-threads.$(OBJEXT) incremental.$(OBJEXT) layout.$(OBJEXT) \
+       mapfile.$(OBJEXT) merge.$(OBJEXT) object.$(OBJEXT) \
+       options.$(OBJEXT) output.$(OBJEXT) parameters.$(OBJEXT) \
+       plugin.$(OBJEXT) readsyms.$(OBJEXT) \
+       reduced_debug_output.$(OBJEXT) reloc.$(OBJEXT) \
+       resolve.$(OBJEXT) script-sections.$(OBJEXT) script.$(OBJEXT) \
+       stringpool.$(OBJEXT) symtab.$(OBJEXT) target-select.$(OBJEXT) \
+       version.$(OBJEXT) workqueue.$(OBJEXT) \
        workqueue-threads.$(OBJEXT)
 am__objects_2 =
 am__objects_3 = yyscript.$(OBJEXT)
@@ -333,6 +334,7 @@ CCFILES = \
         gc.cc \
        gold.cc \
        gold-threads.cc \
+       incremental.cc \
        layout.cc \
        mapfile.cc \
        merge.cc \
@@ -553,6 +555,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gold-threads.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gold.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/i386.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/incremental.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/layout.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/main.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mapfile.Po@am__quote@
diff --git a/gold/incremental.cc b/gold/incremental.cc
new file mode 100644 (file)
index 0000000..665822d
--- /dev/null
@@ -0,0 +1,145 @@
+// inremental.cc -- incremental linking support for gold
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Mikolaj Zalewski <mikolajz@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// 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 General Public License for more details.
+
+// You should have received a copy of the GNU 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.
+
+#include "gold.h"
+#include "elfcpp.h"
+
+using elfcpp::Convert;
+
+namespace gold {
+
+// Version information. Will change frequently during the development, later
+// we could think about backward (and forward?) compatibility.
+const int INCREMENTAL_LINK_VERSION = 1;
+
+namespace internal {
+
+// Header of the .gnu_incremental_input section.
+struct Incremental_input_header_data
+{
+  // Incremental linker version.
+  elfcpp::Elf_Word version;
+
+  // Numer of input files in the link.
+  elfcpp::Elf_Word input_file_count;
+
+  // Offset of command line options in .gnu_incremental_strtab.
+  elfcpp::Elf_Word command_line_offset;
+
+  // Padding.
+  elfcpp::Elf_Word reserved;
+};
+
+// Data stored in .gnu_incremental_input after the header for each of the
+// Incremental_input_header_data::input_file_count input entries.
+struct Incremental_input_entry_data
+{
+  // Offset of file name in .gnu_incremental_strtab section.
+  elfcpp::Elf_Word filename_offset;
+
+  // Offset of data in .gnu_incremental_input.
+  elfcpp::Elf_Word data_offset;
+
+  // Timestamp (in seconds).
+  elfcpp::Elf_Xword timestamp_sec;
+
+  // Nano-second part of timestamp (if supported).
+  elfcpp::Elf_Word timestamp_usec;
+
+  // Type of the input entry.
+  elfcpp::Elf_Half input_type;
+
+  // Padding.
+  elfcpp::Elf_Half reserved;
+};
+
+}
+
+// Accessors.
+
+// See internal::Incremental_input_header for fields descriptions.
+template<int size, bool big_endian>
+class Incremental_input_header_write
+{
+ public:
+  Incremental_input_header_write(unsigned char *p)
+    : p_(reinterpret_cast<internal::Incremental_input_header_data>(p))
+  { }
+
+  void
+  put_version(elfcpp::Elf_Word v)
+  { this->p_->version = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  input_file_count(elfcpp::Elf_Word v)
+  { this->p_->input_file_count = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  command_line_offset(elfcpp::Elf_Word v)
+  { this->p_->command_line_offset = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  reserved(elfcpp::Elf_Word v)
+  { this->p_->reserved = Convert<32, big_endian>::convert_host(v); }
+
+ private:
+  internal::Incremental_input_header_data* p_;
+};
+
+// See internal::Incremental_input_entry for fields descriptions.
+template<int size, bool big_endian>
+class Incremental_input_entry_write
+{
+ public:
+  Incremental_input_entry_write(unsigned char *p)
+    : p_(reinterpret_cast<internal::Incremental_input_entry_data>(p))
+  { }
+
+  void
+  put_filename_offset(elfcpp::Elf_Word v)
+  { this->p_->filename_offset = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  put_data_offset(elfcpp::Elf_Word v)
+  { this->p_->data_offset = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  put_timestamp_sec(elfcpp::Elf_Word v)
+  { this->p_->timestamp_sec = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  put_timestamp_usec(elfcpp::Elf_Word v)
+  { this->p_->timestamp_usec = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  put_input_type(elfcpp::Elf_Word v)
+  { this->p_->input_type = Convert<32, big_endian>::convert_host(v); }
+
+  void
+  put_reserved(elfcpp::Elf_Word v)
+  { this->p_->reserved = Convert<32, big_endian>::convert_host(v); }
+
+ private:
+  internal::Incremental_input_entry_data* p_;
+};
+
+} // End namespace gold.
index 2fb5c5ef85a6b71216a7ab8cf5d6872af88ccb9a..e69d3251762937aa4f28d166e214d1cf4ce66256 100644 (file)
@@ -1,3 +1,7 @@
+2009-03-20  Mikolaj Zalewski  <mikolajz@google.com>
+
+       * common.h (SHT_GNU_INCREMENTAL_INPUTS): Define.
+
 2009-03-14  Mark Kettenis  <kettenis@gnu.org>
 
        * common.h (NT_OPENBSD_PROCINFO, NT_OPENBSD_AUXV) 
index 57c055b8568b8c8191695e4da830f2c3198c5d61..75a6232919964e47fe9cc9bc35f03774e09aabfb 100644 (file)
 #define SHT_LOOS       0x60000000      /* First of OS specific semantics */
 #define SHT_HIOS       0x6fffffff      /* Last of OS specific semantics */
 
+#define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700   /* incremental build data */
 #define SHT_GNU_ATTRIBUTES 0x6ffffff5  /* Object attributes */
 #define SHT_GNU_HASH   0x6ffffff6      /* GNU style symbol hash table */
 #define SHT_GNU_LIBLIST        0x6ffffff7      /* List of prelink dependencies */
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