diff options
| -rw-r--r-- | ld/ChangeLog | 9 | ||||
| -rw-r--r-- | ld/ld.texinfo | 16 | ||||
| -rw-r--r-- | ld/ldmain.c | 6 | ||||
| -rw-r--r-- | ld/lexsup.c | 14 |
4 files changed, 44 insertions, 1 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 0c2bf7b..f6962ca 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,12 @@ +1999-06-22 Mark Mitchell <mark@codesourcery.com> + + * ldmain.c (main): Initialize link_info.init_function and + link_info.fini_function. + * lexsup.c (OPTION_INIT): New macro. + (OPTION_FINI): Likewise. + (ld_options): Add descriptions for them. + (parse_args): Handle them. + 1999-06-23 Ian Lance Taylor <ian@zembu.com> * ldlang.c (section_already_linked): Only discard link once diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 73dc816..115f7a2 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -404,6 +404,14 @@ purpose: the @code{-b}, @code{--format}, @code{--oformat} options, the environment variable. The @sc{gnu} linker will ignore the @code{-F} option when not creating an ELF shared object. +@cindex finalization function +@kindex -fini +@item -fini @var{name} +When creating an ELF executable or shared object, call NAME when the +executable or shared object is unloaded, by setting DT_FINI to the +address of the function. By default, the linker uses @code{_fini} as +the function to call. + @kindex -g @item -g Ignored. Provided for compatibility with other tools. @@ -434,6 +442,14 @@ field rather than the using the file name given to the linker. @item -i Perform an incremental link (same as option @samp{-r}). +@cindex initialization function +@kindex -init +@item -init @var{name} +When creating an ELF executable or shared object, call NAME when the +executable or shared object is loaded, by setting DT_INIT to the address +of the function. By default, the linker uses @code{_init} as the +function to call. + @cindex archive files, from cmd line @kindex -l@var{archive} @kindex --library=@var{archive} diff --git a/ld/ldmain.c b/ld/ldmain.c index 1e710db..7eef3e5 100644 --- a/ld/ldmain.c +++ b/ld/ldmain.c @@ -231,7 +231,11 @@ main (argc, argv) link_info.notice_hash = NULL; link_info.wrap_hash = NULL; link_info.mpc860c0 = 0; - + /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init + and _fini symbols. We are compatible. */ + link_info.init_function = "_init"; + link_info.fini_function = "_fini"; + ldfile_add_arch (""); config.make_executable = true; diff --git a/ld/lexsup.c b/ld/lexsup.c index a990693..8f4785b 100644 --- a/ld/lexsup.c +++ b/ld/lexsup.c @@ -120,6 +120,8 @@ int parsing_defsym = 0; #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1) #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1) #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1) +#define OPTION_INIT (OPTION_NO_UNDEFINED + 1) +#define OPTION_FINI (OPTION_INIT + 1) /* The long options. This structure is used for both the option parsing and the help text. */ @@ -270,6 +272,8 @@ static const struct ld_option ld_options[] = '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES }, { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES}, + { {"fini", required_argument, NULL, OPTION_FINI}, + '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH }, { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX}, '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES}, { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS}, @@ -280,6 +284,8 @@ static const struct ld_option ld_options[] = TWO_DASHES }, { {"help", no_argument, NULL, OPTION_HELP}, '\0', NULL, N_("Print option help"), TWO_DASHES }, + { {"init", required_argument, NULL, OPTION_INIT}, + '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH }, { {"Map", required_argument, NULL, OPTION_MAP}, '\0', N_("FILE"), N_("Write a map file"), ONE_DASH }, { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE }, @@ -988,6 +994,14 @@ the GNU General Public License. This program has absolutely no warranty.\n")); } command_line.relax = true; break; + + case OPTION_INIT: + link_info.init_function = optarg; + break; + + case OPTION_FINI: + link_info.fini_function = optarg; + break; } } |