Add a .note section to make gdb happy

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