New patch to review for coreboot: c1c27d5 build: Drop libgcc runtime wrapper in Clang builds

[Edward O'Callaghan]

Edward O'Callaghan ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5812

-gerrit

commit c1c27d54c00cfb6d3b360aa6ca897fe27da76c45
Author: Edward O'Callaghan 
Date:   Fri May 23 01:29:00 2014 +1000

build: Drop libgcc runtime wrapper in Clang builds

This GCC specific workaroung of wrapping of libgcc runtime symbols with
    gcc.c is not nessary with libcompiler-rt linkage.

Change-Id: I50a2bc99d97f68a2ad2b51a92ea0e7086bab35fe
    Signed-off-by: Edward O'Callaghan 
---
 src/arch/x86/Makefile.inc | 6 +++---
 src/lib/Makefile.inc      | 4 +++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index d560838..125e9de 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -209,7 +209,7 @@ romstage-libs ?=
 $(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.ld $$(romstage-libs)
    @printf "    LINK       $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
-	$(LD_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) --wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3 --start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) --end-group -T $(objgenerated)/romstage_null.ld
+	$(LD_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) --start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) --end-group -T $(objgenerated)/romstage_null.ld
 else
    $(CC_romstage) $(CFLAGS_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(objgenerated)/romstage_null.ld -Wl,--wrap,__divdi3 -Wl,--wrap,__udivdi3 -Wl,--wrap,__moddi3 -Wl,--wrap,__umoddi3 -Wl,--start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) -Wl,--end-group
 endif
@@ -221,7 +221,7 @@ endif
 $(objcbfs)/romstage_xip.debug: $$(romstage-objs) $(objgenerated)/romstage_xip.ld $$(romstage-libs)
    @printf "    LINK       $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
-	$(LD_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) --wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3 --start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) --end-group -T $(objgenerated)/romstage_xip.ld
+	$(LD_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) --start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) --end-group -T $(objgenerated)/romstage_xip.ld
 else
    $(CC_romstage) $(CFLAGS_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(objgenerated)/romstage_xip.ld -Wl,--wrap,__divdi3 -Wl,--wrap,__udivdi3 -Wl,--wrap,__moddi3 -Wl,--wrap,__umoddi3 -Wl,--start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) -Wl,--end-group
 endif
@@ -332,7 +332,7 @@ endif
 $(objgenerated)/ramstage.o: $$(ramstage-objs) $(LIBGCC_FILE_NAME_ramstage) $$(ramstage-libs)
    @printf "    CC         $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
-	$(LD_ramstage) -m elf_i386 -r -o $@ --wrap __divdi3 --wrap __udivdi3 --wrap __moddi3 --wrap __umoddi3 --start-group $(ramstage-objs) $(ramstage-libs) $(LIBGCC_FILE_NAME_ramstage) --end-group
+	$(LD_ramstage) -m elf_i386 -r -o $@ --start-group $(ramstage-objs) $(ramstage-libs) $(LIBGCC_FILE_NAME_ramstage) --end-group
 else
    $(CC_ramstage) $(CFLAGS_ramstage) -nostdlib -r -o $@ -Wl,--wrap,__divdi3 -Wl,--wrap,__udivdi3 -Wl,--wrap,__moddi3 -Wl,--wrap,__umoddi3 -Wl,--start-group $(ramstage-objs) $(ramstage-libs) $(LIBGCC_FILE_NAME_ramstage) -Wl,--end-group
 endif
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index f82a3fa..522f43a 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -36,7 +36,10 @@ romstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c
 endif

romstage-y += compute_ip_checksum.c
+ifneq ($(CONFIG_COMPILER_LLVM_CLANG),y)
 romstage-$(CONFIG_ARCH_ROMSTAGE_X86_32) += gcc.c
+ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += gcc.c
+endif

ramstage-y += hardwaremain.c
 ramstage-y += selfboot.c
@@ -54,7 +57,6 @@ ramstage-y += cbfs.c
 ramstage-y += lzma.c
 #ramstage-y += lzmadecode.c
 ramstage-y += stack.c
-ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += gcc.c
 ramstage-y += clog2.c
 romstage-y += clog2.c
 ramstage-$(CONFIG_CONSOLE_CBMEM) += cbmem_console.c