OpenE2K/binutils-gdb
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* incremental.cc (can_incremental_update): New function.

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* incremental.h (can_incremental_update): New function.
	* layout.cc (Layout::init_fixed_output_section): Call it.
	(Layout::make_output_section): Don't allow patch space in .eh_frame.
	* object.cc (Sized_relobj_file::do_layout): Call
	can_incremental_update.
This commit is contained in:
Cary Coutant 2011-09-18 15:06:28 +00:00
parent 3451853062
commit aa06ae28f1
5 changed files with 35 additions and 7 deletions
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9
gold/ChangeLog
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@ -1,3 +1,12 @@
2011-09-18 Cary Coutant <ccoutant@google.com>
* incremental.cc (can_incremental_update): New function.
* incremental.h (can_incremental_update): New function.
* layout.cc (Layout::init_fixed_output_section): Call it.
(Layout::make_output_section): Don't allow patch space in .eh_frame.
* object.cc (Sized_relobj_file::do_layout): Call
can_incremental_update.
2011-09-13 Cary Coutant <ccoutant@google.com>
* configure.ac: Check for glibc support for gnu_indirect_function

16
gold/incremental.cc
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@ -161,6 +161,22 @@ Incremental_binary::error(const char* format, ...) const
va_end(args);
}
// Return TRUE if a section of type SH_TYPE will can be updated in place
// during an incremental update. We can update sections of type PROGBITS,
// NOBITS, INIT_ARRAY, FINI_ARRAY, PREINIT_ARRAY, and NOTE. All others
// will be regenerated.
bool
can_incremental_update(unsigned int sh_type)
{
return (sh_type == elfcpp::SHT_PROGBITS
|| sh_type == elfcpp::SHT_NOBITS
|| sh_type == elfcpp::SHT_INIT_ARRAY
|| sh_type == elfcpp::SHT_FINI_ARRAY
|| sh_type == elfcpp::SHT_PREINIT_ARRAY
|| sh_type == elfcpp::SHT_NOTE);
}
// Find the .gnu_incremental_inputs section and related sections.
template<int size, bool big_endian>

5
gold/incremental.h
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@ -81,6 +81,11 @@ enum Incremental_shlib_symbol_flags
static const int INCREMENTAL_SHLIB_SYM_FLAGS_SHIFT = 30;
// Return TRUE if a section of type SH_TYPE will can be updated in place
// during an incremental update.
bool
can_incremental_update(unsigned int sh_type);
// Create an Incremental_binary object for FILE. Returns NULL is this is not
// possible, e.g. FILE is not an ELF file or has an unsupported target.

8
gold/layout.cc
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@ -898,11 +898,10 @@ Layout::init_fixed_output_section(const char* name,
{
unsigned int sh_type = shdr.get_sh_type();
// We preserve the layout of PROGBITS, NOBITS, and NOTE sections.
// We preserve the layout of PROGBITS, NOBITS, INIT_ARRAY, FINI_ARRAY,
// PRE_INIT_ARRAY, and NOTE sections.
// All others will be created from scratch and reallocated.
if (sh_type != elfcpp::SHT_PROGBITS
&& sh_type != elfcpp::SHT_NOBITS
&& sh_type != elfcpp::SHT_NOTE)
if (!can_incremental_update(sh_type))
return NULL;
typename elfcpp::Elf_types<size>::Elf_Addr sh_addr = shdr.get_sh_addr();
@ -1442,6 +1441,7 @@ Layout::make_output_section(const char* name, elfcpp::Elf_Word type,
&& order != ORDER_FINI
&& order != ORDER_RELRO_LAST
&& order != ORDER_NON_RELRO_FIRST
&& strcmp(name, ".eh_frame") != 0
&& strcmp(name, ".ctors") != 0
&& strcmp(name, ".dtors") != 0
&& strcmp(name, ".jcr") != 0)

4
gold/object.cc
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@ -1344,9 +1344,7 @@ Sized_relobj_file<size, big_endian>::do_layout(Symbol_table* symtab,
Incremental_inputs* incremental_inputs = layout->incremental_inputs();
if (incremental_inputs != NULL
&& !discard
&& (shdr.get_sh_type() == elfcpp::SHT_PROGBITS
|| shdr.get_sh_type() == elfcpp::SHT_NOBITS
|| shdr.get_sh_type() == elfcpp::SHT_NOTE))
&& can_incremental_update(shdr.get_sh_type()))
{
off_t sh_size = shdr.get_sh_size();
section_size_type uncompressed_size;