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authorStefan Reinauer <stepan@coresystems.de>2008-11-28 12:09:17 +0000
committerPatrick Georgi <patrick.georgi@coresystems.de>2008-11-28 12:09:17 +0000
commit4ed326be5d7dec9ee16190847ea0b9f42117fe1a (patch)
tree8c1f2b5c5d87d2a27445024cb1bdfefd93b62616 /src/config
parent38bee3c8b6ca49031b30e3a8f974fe0690560de3 (diff)
downloadcoreboot-4ed326be5d7dec9ee16190847ea0b9f42117fe1a.tar.xz
This patch from Ralf Grosse Boerger makes debugging more comfortable.
With this patch it's possible to - determine the according source code line for each asm statement (objdump -dS) - determine the source code file for each asm statement (objdump -ddl) This isn't exactly trivial because cache_as_ram_auto.c gets compiled to assembly and converted by a perl script afterwards. This patch solves the problem - by extending cache_as_ram_auto.inc with debug information and line numbers - by correcting the perl calls (".text" --> "\.text") - by creating a disassembly with source code and line numbers. (ctr0.disasm and coreboot.disasm) There's one minor downside to the patch: A complete abuild run takes up around 1.6G instead of about 700MB now. But I'm sure this is quite reasonable for the benefits. Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Please commit while this is being worked out. Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3778 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/config')
-rw-r--r--src/config/Config.lb4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/config/Config.lb b/src/config/Config.lb
index a9de434071..93d67b892e 100644
--- a/src/config/Config.lb
+++ b/src/config/Config.lb
@@ -124,6 +124,7 @@ makerule coreboot
depends "crt0.o $(INIT-OBJECTS) $(COREBOOT_APC) $(COREBOOT_RAM_ROM) ldscript.ld"
action "$(CC) $(DISTRO_LFLAGS) -nostdlib -nostartfiles -static -o $@ -T ldscript.ld crt0.o $(INIT-OBJECTS)"
action "$(CROSS_COMPILE)nm -n coreboot | sort > coreboot.map"
+ action "$(CROSS_COMPILE)objdump -dS coreboot > coreboot.disasm"
end
# the buildrom tool
@@ -139,9 +140,10 @@ makerule crt0.s
action "$(CPP) $(CPPFLAGS) -I. -I$(TOP)/src $< > $@.new && mv $@.new $@"
end
+# generate an assembly listing via -a switch.
makerule crt0.o
depends "crt0.s"
- action "@$(CC) -c $(CPU_OPT) -o $@ $<"
+ action "$(CC) -Wa,-acdlns -c $(CPU_OPT) -o $@ $< >crt0.disasm"
end
makerule etags