From ecb1dc892297d5d99876907328fed732feefeab2 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 20 May 2009 04:35:14 -0400
Subject: Add support for Linux-like kallsysms

The kernel stores address<->symbol names in it so things can be decoded at
runtime.  Do it in U-Boot, and we get nice symbol decoding when crashing.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 Makefile | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index d14678070e..4445b4b6a3 100644
--- a/Makefile
+++ b/Makefile
@@ -344,12 +344,19 @@ $(obj)u-boot.sha1:	$(obj)u-boot.bin
 $(obj)u-boot.dis:	$(obj)u-boot
 		$(OBJDUMP) -d $< > $@
 
-$(obj)u-boot:		depend $(SUBDIRS) $(OBJS) $(LIBBOARD) $(LIBS) $(LDSCRIPT)
+GEN_UBOOT = \
 		UNDEF_SYM=`$(OBJDUMP) -x $(LIBBOARD) $(LIBS) | \
 		sed  -n -e 's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
 		cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \
 			--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
 			-Map u-boot.map -o u-boot
+$(obj)u-boot:		depend $(SUBDIRS) $(OBJS) $(LIBBOARD) $(LIBS) $(LDSCRIPT)
+		$(GEN_UBOOT)
+ifeq ($(CONFIG_KALLSYMS),y)
+		smap=`$(call SYSTEM_MAP,u-boot) | awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\0"}'` ; \
+		$(CC) $(CFLAGS) -DSYSTEM_MAP="\"$${smap}\"" -c common/system_map.c -o $(obj)common/system_map.o
+		$(GEN_UBOOT) $(obj)common/system_map.o
+endif
 
 $(OBJS):	depend
 		$(MAKE) -C cpu/$(CPU) $(if $(REMOTE_BUILD),$@,$(notdir $@))
@@ -448,10 +455,12 @@ cscope:
 						> cscope.files
 		cscope -b -q -k
 
-$(obj)System.map:	$(obj)u-boot
-		@$(NM) $< | \
+SYSTEM_MAP = \
+		$(NM) $1 | \
 		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
-		sort > $(obj)System.map
+		LC_ALL=C sort
+$(obj)System.map:	$(obj)u-boot
+		@$(call SYSTEM_MAP,$<) > $(obj)System.map
 
 #
 # Auto-generate the autoconf.mk file (which is included by all makefiles)
-- 
cgit v1.2.1