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authorEric Andersen <andersen@codepoet.org>2002-08-19 10:19:17 +0000
committerEric Andersen <andersen@codepoet.org>2002-08-19 10:19:17 +0000
commit0d86dfc46feaf8cce5a1d1e383e80f29d83ceaf1 (patch)
tree8af39ed3dac134788a169f5fa6e1d31bc7d07d6e
parentc0dc392defac1b8ab00fd0d2483675d1d0805127 (diff)
Add a .note section to make gdb happy
-rw-r--r--libc/misc/internals/Makefile10
-rw-r--r--libc/misc/internals/abi-note.S72
-rw-r--r--libc/misc/internals/abi-tag.h2
3 files changed, 83 insertions, 1 deletions
diff --git a/libc/misc/internals/Makefile b/libc/misc/internals/Makefile
index e9b4e55b8..473ea926c 100644
--- a/libc/misc/internals/Makefile
+++ b/libc/misc/internals/Makefile
@@ -27,7 +27,11 @@ include $(TOPDIR)Rules.mak
CSRC=__uClibc_main.c tempname.c errno.c __errno_location.c __h_errno_location.c
COBJS=$(patsubst %.c,%.o, $(CSRC))
-OBJS=$(COBJS)
+
+SSRC=abi-note.S
+SOBJS=$(patsubst %.S,%.o, $(SSRC))
+
+OBJS=$(COBJS) $(SOBJS)
all: $(OBJS) interp.o $(LIBC)
@@ -47,6 +51,10 @@ $(COBJS): %.o : %.c
$(CC) $(CFLAGS) -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
+$(SOBJS): %.o : %.S
+ $(CC) $(CFLAGS) -c $< -o $@
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
+
interp.o: %.o : %.c
$(CC) $(CFLAGS) -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
diff --git a/libc/misc/internals/abi-note.S b/libc/misc/internals/abi-note.S
new file mode 100644
index 000000000..5c30c35a8
--- /dev/null
+++ b/libc/misc/internals/abi-note.S
@@ -0,0 +1,72 @@
+/* Special .init and .fini section support.
+ Copyright (C) 1997, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* Define an ELF note identifying the operating-system ABI that the
+ executable was created for. The ELF note information identifies a
+ particular OS or coordinated development effort within which the
+ ELF header's e_machine value plus (for dynamically linked programs)
+ the PT_INTERP dynamic linker name and DT_NEEDED shared library
+ names fully identify the runtime environment required by an
+ executable.
+
+ The general format of ELF notes is as follows.
+ Offsets and lengths are bytes or (parenthetical references) to the
+ values in other fields.
+
+offset length contents
+0 4 length of name
+4 4 length of data
+8 4 note type
+12 (0) vendor name
+ - null-terminated ASCII string, padded to 4-byte alignment
+12+(0) (4) note data,
+
+ The GNU project and cooperating development efforts (including the
+ Linux community) use note type 1 and a vendor name string of "GNU"
+ for a note descriptor that indicates ABI requirements. The note data
+ is four 32-bit words. The first of these is an operating system
+ number (0=Linux, 1=Hurd, 2=Solaris, ...) and the remaining three
+ identify the earliest release of that OS that supports this ABI.
+ See abi-tags (top level) for details. */
+
+#include <abi-tag.h> /* OS-specific ABI tag value */
+
+/* The linker (GNU ld 2.8 and later) recognizes an allocated section whose
+ name begins with `.note' and creates a PT_NOTE program header entry
+ pointing at it. */
+
+ .section ".note.ABI-tag", "a"
+ .align 4
+ .long 1f - 0f /* name length */
+ .long 3f - 2f /* data length */
+ .long 1 /* note type */
+0: .asciz "GNU" /* vendor name */
+1: .align 4
+2: .long __ABI_TAG_OS /* note data: the ABI tag */
+ .long __ABI_TAG_VERSION
+3: .align 4 /* pad out section */
diff --git a/libc/misc/internals/abi-tag.h b/libc/misc/internals/abi-tag.h
new file mode 100644
index 000000000..94b67e9ee
--- /dev/null
+++ b/libc/misc/internals/abi-tag.h
@@ -0,0 +1,2 @@
+#define __ABI_TAG_OS 0
+#define __ABI_TAG_VERSION 2,0,0