(COLLECT_SHARD_FINI_FUNC): Define default values.
(write_c_file_stat): Use them to call construtor and destructor
functions in shared libraries.
* doc/tm.texi (COLLECT_SHARED_INIT_FUNC)
(COLLECT_SHARD_FINI_FUNC): Document them.
* config/netbsd.h (COLLECT_SHARED_INIT_FUNC)
(COLLECT_SHARD_FINI_FUNC): Define.
* config/netbsd.h (LINK_SPEC): Don't pull in estart if creating a
shared library. Pass -shared through to the linker.
* config/arm/netbsd.h (LINK_SPEC): Likewise.
* config/arm/t-netbsd (TARGET_LIBGCC2_CFLAGS): Add -fpic.
(SHLIB_EXT, SHLIB_NAME, SHLIB_SONAME, SHLIB_OBJS, SHLIB_LINK)
(SHLIB_INSTALL): Define.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@47975
138bc75d-0d04-0410-961f-
82ee72b054a4
2001-12-13 Richard Earnshaw <rearnsha@arm.com>
+ * collect2.c (COLLECT_SHARED_INIT_FUNC)
+ (COLLECT_SHARD_FINI_FUNC): Define default values.
+ (write_c_file_stat): Use them to call construtor and destructor
+ functions in shared libraries.
+ * doc/tm.texi (COLLECT_SHARED_INIT_FUNC)
+ (COLLECT_SHARD_FINI_FUNC): Document them.
+ * config/netbsd.h (COLLECT_SHARED_INIT_FUNC)
+ (COLLECT_SHARD_FINI_FUNC): Define.
+
+ * config/netbsd.h (LINK_SPEC): Don't pull in estart if creating a
+ shared library. Pass -shared through to the linker.
+ * config/arm/netbsd.h (LINK_SPEC): Likewise.
+
+ * config/arm/t-netbsd (TARGET_LIBGCC2_CFLAGS): Add -fpic.
+ (SHLIB_EXT, SHLIB_NAME, SHLIB_SONAME, SHLIB_OBJS, SHLIB_LINK)
+ (SHLIB_INSTALL): Define.
+
+2001-12-13 Richard Earnshaw <rearnsha@arm.com>
+
* arm.c (legitimize_pic_address): Handle LABEL_REFs in substantially
the same way as we handle SYMBOL_REFS.
/* This must match tree.h. */
#define DEFAULT_INIT_PRIORITY 65535
+#ifndef COLLECT_SHARED_INIT_FUNC
+#define COLLECT_SHARED_INIT_FUNC(STREAM, FUNC) \
+ fprintf ((STREAM), "void _GLOBAL__DI() {\n\t%s();\n}\n", (FUNC))
+#endif
+#ifndef COLLECT_SHARED_FINI_FUNC
+#define COLLECT_SHARED_FINI_FUNC(STREAM, FUNC) \
+ fprintf ((STREAM), "void _GLOBAL__DD() {\n\t%s();\n}\n", (FUNC))
+#endif
+
#if defined (LDD_SUFFIX) || SUNOS4_SHARED_LIBRARIES
#define SCAN_LIBRARIES
#endif
if (shared_obj)
{
- fprintf (stream, "void _GLOBAL__DI() {\n\t%s();\n}\n", initname);
- fprintf (stream, "void _GLOBAL__DD() {\n\t%s();\n}\n", fininame);
+ COLLECT_SHARED_INIT_FUNC(stream, initname);
+ COLLECT_SHARED_FINI_FUNC(stream, fininame);
}
}
/* Pass -X to the linker so that it will strip symbols starting with 'L' */
#undef LINK_SPEC
#define LINK_SPEC "\
--X %{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{R*} \
-%{static:-Bstatic} %{assert*} \
+-X %{!shared:%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{R*} \
+%{static:-Bstatic}} %{shared} %{assert*} \
"
#undef SIZE_TYPE
# Just for these, we omit the frame pointer since it makes such a big
# difference. It is then pointless adding debugging.
-TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer
+TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer -fpic
LIBGCC2_DEBUG_CFLAGS = -g0
+# Build a shared libgcc library.
+SHLIB_EXT = .so
+SHLIB_NAME = @shlib_base_name@.so
+SHLIB_SONAME = @shlib_base_name@.so.1
+SHLIB_OBJS = @shlib_objs@
+
+SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
+ -Wl,-soname,$(SHLIB_SONAME) \
+ -o $(SHLIB_NAME) @multilib_flags@ $(SHLIB_OBJS) -lc && \
+ rm -f $(SHLIB_SONAME) && \
+ $(LN_S) $(SHLIB_NAME) $(SHLIB_SONAME)
+# $(slibdir) double quoted to protect it from expansion while building
+# libgcc.mk. We want this delayed until actual install time.
+SHLIB_INSTALL = $(INSTALL_DATA) $(SHLIB_NAME) $$(slibdir)/$(SHLIB_SONAME); \
+ rm -f $$(slibdir)/$(SHLIB_NAME); \
+ $(LN_S) $(SHLIB_SONAME) $$(slibdir)/$(SHLIB_NAME)
+
# Don't build enquire
ENQUIRE=
#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
/* Provide a LINK_SPEC appropriate for NetBSD. Here we provide support
- for the special GCC options -static, -assert, and -nostdlib. */
+ for the special GCC options -shared, -static, -assert, and -nostdlib. */
#undef LINK_SPEC
#define LINK_SPEC \
- "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{R*} %{static:-Bstatic} %{assert*}"
+ "%{!shared:%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{R*} %{static:-Bstatic}} %{shared} %{assert*}"
+
+/* When building shared libraries, the initialization and finalization
+ functions for the library are .init and .fini respectively. */
+
+#define COLLECT_SHARED_INIT_FUNC(STREAM,FUNC) \
+ do { \
+ fprintf ((STREAM), "void __init() __asm__ (\".init\");"); \
+ fprintf ((STREAM), "void __init() {\n\t%s();\n}\n", (FUNC)); \
+ } while (0);
+
+#define COLLECT_SHARED_FINI_FUNC(STREAM,FUNC) \
+ do { \
+ fprintf ((STREAM), "void __fini() __asm__ (\".fini\");"); \
+ fprintf ((STREAM), "void __fini() {\n\t%s();\n}\n", (FUNC)); \
+ } while (0);
/* This defines which switch letters take arguments. */
#undef SWITCH_TAKES_ARG
If defined, a C string constant for a switch that tells the linker that
the following symbol is a finalization routine.
+@item COLLECT_SHARED_INIT_FUNC (@var{stream}, @var{func})
+If defined, a C statement that will write a function that can be
+automatically called when a shared library is loaded. The function
+should call @var{func}, which takes no arguments. If not defined, and
+the object format requires an explicit initialization function, then a
+function called @var{_GLOBAL__DI} will be generated.
+
+This function and the following one are used by collect2 when linking a
+shared library that needs constructors or destructors, or has DWARF2
+exception tables embedded in the code.
+
+@item COLLECT_SHARED_FINI_FUNC (@var{stream}, @var{func})
+If defined, a C statement that will write a function that can be
+automatically called when a shared library is unloaded. The function
+should call @var{func}, which takes no arguments. If not defined, and
+the object format requires an explicit finalization function, then a
+function called @var{_GLOBAL__DD} will be generated.
+
@item INVOKE__main
@findex INVOKE__main
If defined, @code{main} will call @code{__main} despite the presence of
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