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elfcpp/

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* elfcpp.h (DF_1_NOW, DF_1_GLOBAL, DF_1_GROUP,
	DF_1_NODELETE, DF_1_LOADFLTR, DF_1_INITFIRST,
	DF_1_NOOPEN, DF_1_ORIGIN, DF_1_DIRECT, DF_1_TRANS,
	DF_1_INTERPOSE, DF_1_NODEFLIB, DF_1_NODUMP,
	DF_1_CONLFAT): New enum constants.

gold/

	* options.h (DEFINE_enable): New macro.
	(new_dtags): New enable option.
	(initfirst, interpose, loadfltr, nodefaultlib,
	nodelete, nodlopen, nodump): New -z options.
	* layout.cc (Layout:finish_dynamic_section): If new
	dtags enabled, emit DT_RUNPATH.  Also, emit a
	DT_FLAGS_1 containing any specified -z flags.
This commit is contained in:
David S. Miller
2008-04-16 23:21:01 +00:00
parent dacec2a8bd
commit 7c41443585
5 changed files with 109 additions and 0 deletions
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8
elfcpp/ChangeLog
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@ -1,3 +1,11 @@
2008-04-16 David S. Miller <davem@davemloft.net>
* elfcpp.h (DF_1_NOW, DF_1_GLOBAL, DF_1_GROUP,
DF_1_NODELETE, DF_1_LOADFLTR, DF_1_INITFIRST,
DF_1_NOOPEN, DF_1_ORIGIN, DF_1_DIRECT, DF_1_TRANS,
DF_1_INTERPOSE, DF_1_NODEFLIB, DF_1_NODUMP,
DF_1_CONLFAT): New enum constants.
2008-04-15 David S. Miller <davem@davemloft.net> 2008-04-15 David S. Miller <davem@davemloft.net>
* sparc.h (EF_SPARC_EXT_MASK, EF_SPARC_32PLUS_MASK, * sparc.h (EF_SPARC_EXT_MASK, EF_SPARC_32PLUS_MASK,

20
elfcpp/elfcpp.h
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@ -688,6 +688,26 @@ enum DF
DF_STATIC_TLS = 0x10 DF_STATIC_TLS = 0x10
}; };
// Flags found in the DT_FLAGS_1 dynamic element.
enum DF_1
{
DF_1_NOW = 0x1,
DF_1_GLOBAL = 0x2,
DF_1_GROUP = 0x4,
DF_1_NODELETE = 0x8,
DF_1_LOADFLTR = 0x10,
DF_1_INITFIRST = 0x20,
DF_1_NOOPEN = 0x40,
DF_1_ORIGIN = 0x80,
DF_1_DIRECT = 0x100,
DF_1_TRANS = 0x200,
DF_1_INTERPOSE = 0x400,
DF_1_NODEFLIB = 0x800,
DF_1_NODUMP = 0x1000,
DF_1_CONLFAT = 0x2000,
};
// Version numbers which appear in the vd_version field of a Verdef // Version numbers which appear in the vd_version field of a Verdef
// structure. // structure.

10
gold/ChangeLog
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@ -1,3 +1,13 @@
2008-04-16 David S. Miller <davem@davemloft.net>
* options.h (DEFINE_enable): New macro.
(new_dtags): New enable option.
(initfirst, interpose, loadfltr, nodefaultlib,
nodelete, nodlopen, nodump): New -z options.
* layout.cc (Layout:finish_dynamic_section): If new
dtags enabled, emit DT_RUNPATH. Also, emit a
DT_FLAGS_1 containing any specified -z flags.
2008-04-16 Ian Lance Taylor <iant@google.com> 2008-04-16 Ian Lance Taylor <iant@google.com>
* copy-relocs.cc: New file. * copy-relocs.cc: New file.

24
gold/layout.cc
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@ -2459,6 +2459,8 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
} }
odyn->add_string(elfcpp::DT_RPATH, rpath_val); odyn->add_string(elfcpp::DT_RPATH, rpath_val);
if (parameters->options().enable_new_dtags())
odyn->add_string(elfcpp::DT_RUNPATH, rpath_val);
} }
// Look for text segments that have dynamic relocations. // Look for text segments that have dynamic relocations.
@ -2509,6 +2511,28 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
if (parameters->options().shared() && this->has_static_tls()) if (parameters->options().shared() && this->has_static_tls())
flags |= elfcpp::DF_STATIC_TLS; flags |= elfcpp::DF_STATIC_TLS;
odyn->add_constant(elfcpp::DT_FLAGS, flags); odyn->add_constant(elfcpp::DT_FLAGS, flags);
flags = 0;
if (parameters->options().initfirst())
flags |= elfcpp::DF_1_INITFIRST;
if (parameters->options().interpose())
flags |= elfcpp::DF_1_INTERPOSE;
if (parameters->options().loadfltr())
flags |= elfcpp::DF_1_LOADFLTR;
if (parameters->options().nodefaultlib())
flags |= elfcpp::DF_1_NODEFLIB;
if (parameters->options().nodelete())
flags |= elfcpp::DF_1_NODELETE;
if (parameters->options().nodlopen())
flags |= elfcpp::DF_1_NOOPEN;
if (parameters->options().nodump())
flags |= elfcpp::DF_1_NODUMP;
if (!parameters->options().shared())
flags &= ~(elfcpp::DF_1_INITFIRST
| elfcpp::DF_1_NODELETE
| elfcpp::DF_1_NOOPEN);
if (flags)
odyn->add_constant(elfcpp::DT_FLAGS_1, flags);
} }
// The mapping of .gnu.linkonce section names to real section names. // The mapping of .gnu.linkonce section names to real section names.

47
gold/options.h
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@ -286,6 +286,28 @@ struct Struct_special : public Struct_var
}; \ }; \
Struct_no_##varname__ no_##varname__##_initializer_ Struct_no_##varname__ no_##varname__##_initializer_
#define DEFINE_enable(varname__, dashes__, shortname__, default_value__, \
helpstring__, no_helpstring__) \
DEFINE_var(enable_##varname__, dashes__, shortname__, default_value__, \
default_value__ ? "true" : "false", helpstring__, NULL, \
false, bool, bool, options::parse_bool) \
struct Struct_disable_##varname__ : public options::Struct_var \
{ \
Struct_disable_##varname__() : option("disable-" #varname__, \
dashes__, '\0', \
default_value__ ? "false" : "true", \
no_helpstring__, NULL, false, this) \
{ } \
\
void \
parse_to_value(const char*, const char*, \
Command_line*, General_options* options) \
{ options->set_enable_##varname__(false); } \
\
options::One_option option; \
}; \
Struct_disable_##varname__ disable_##varname__##_initializer_
#define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \ #define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \
helpstring__, helparg__) \ helpstring__, helparg__) \
DEFINE_var(varname__, dashes__, shortname__, default_value__, \ DEFINE_var(varname__, dashes__, shortname__, default_value__, \
@ -538,6 +560,10 @@ class General_options
DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "", DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
N_("Ignored for compatibility"), N_("EMULATION")); N_("Ignored for compatibility"), N_("EMULATION"));
DEFINE_enable(new_dtags, options::EXACTLY_TWO_DASHES, '\0', false,
N_("Enable use of DT_RUNPATH and DT_FLAGS"),
N_("Disable use of DT_RUNPATH and DT_FLAGS"));
DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false, DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false,
N_("Create an output file even if errors occur"), NULL); N_("Create an output file even if errors occur"), NULL);
@ -653,6 +679,27 @@ class General_options
N_("Set maximum page size to SIZE"), N_("SIZE")); N_("Set maximum page size to SIZE"), N_("SIZE"));
DEFINE_bool(noexecstack, options::DASH_Z, '\0', false, DEFINE_bool(noexecstack, options::DASH_Z, '\0', false,
N_("Mark output as not requiring executable stack"), NULL); N_("Mark output as not requiring executable stack"), NULL);
DEFINE_bool(initfirst, options::DASH_Z, '\0', false,
N_("Mark DSO to be initialized first at runtime"),
NULL);
DEFINE_bool(interpose, options::DASH_Z, '\0', false,
N_("Mark object to interpose all DSOs but executable"),
NULL);
DEFINE_bool(loadfltr, options::DASH_Z, '\0', false,
N_("Mark object requiring immediate process"),
NULL);
DEFINE_bool(nodefaultlib, options::DASH_Z, '\0', false,
N_("Mark object not to use default search paths"),
NULL);
DEFINE_bool(nodelete, options::DASH_Z, '\0', false,
N_("Mark DSO non-deletable at runtime"),
NULL);
DEFINE_bool(nodlopen, options::DASH_Z, '\0', false,
N_("Mark DSO not available to dlopen"),
NULL);
DEFINE_bool(nodump, options::DASH_Z, '\0', false,
N_("Mark DSO not available to dldump"),
NULL);
public: public:
typedef options::Dir_list Dir_list; typedef options::Dir_list Dir_list;