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author | David S. Miller <davem@redhat.com> | 2008-04-16 23:21:01 +0000 |
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committer | David S. Miller <davem@redhat.com> | 2008-04-16 23:21:01 +0000 |
commit | 7c41443585981fab8c7b9d375df49b9f8c779b5d (patch) | |
tree | 53a76409ab731fe4b602c6ac9d3f1bcb439adca7 /gold | |
parent | dacec2a8bd47e90428f29f32d55ecb243e1d9ecd (diff) | |
download | fsf-binutils-gdb-7c41443585981fab8c7b9d375df49b9f8c779b5d.zip fsf-binutils-gdb-7c41443585981fab8c7b9d375df49b9f8c779b5d.tar.gz fsf-binutils-gdb-7c41443585981fab8c7b9d375df49b9f8c779b5d.tar.bz2 |
elfcpp/
* 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.
Diffstat (limited to 'gold')
-rw-r--r-- | gold/ChangeLog | 10 | ||||
-rw-r--r-- | gold/layout.cc | 24 | ||||
-rw-r--r-- | gold/options.h | 47 |
3 files changed, 81 insertions, 0 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index 4d1a250..7a34ffe 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -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> * copy-relocs.cc: New file. diff --git a/gold/layout.cc b/gold/layout.cc index 76b6b2b..fa0d4c8 100644 --- a/gold/layout.cc +++ b/gold/layout.cc @@ -2459,6 +2459,8 @@ Layout::finish_dynamic_section(const Input_objects* input_objects, } 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. @@ -2509,6 +2511,28 @@ Layout::finish_dynamic_section(const Input_objects* input_objects, if (parameters->options().shared() && this->has_static_tls()) flags |= elfcpp::DF_STATIC_TLS; 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. diff --git a/gold/options.h b/gold/options.h index e17c40f..2c71fae 100644 --- a/gold/options.h +++ b/gold/options.h @@ -286,6 +286,28 @@ struct Struct_special : public Struct_var }; \ 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__, \ helpstring__, helparg__) \ DEFINE_var(varname__, dashes__, shortname__, default_value__, \ @@ -538,6 +560,10 @@ class General_options DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "", 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, 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")); DEFINE_bool(noexecstack, options::DASH_Z, '\0', false, 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: typedef options::Dir_list Dir_list; |