Messages in this thread Patch in this message |  | | | Date | Sat, 10 Dec 2005 08:19:35 +0100 | | From | Andi Kleen <> | | Subject | Re: i386 -> x86_64 cross compile failure (binutils bug?) |
| |
On Sat, Dec 10, 2005 at 12:12:03AM -0500, Lee Revell wrote: > On Sat, 2005-12-10 at 01:56 -0700, Andi Kleen wrote: > > Lee Revell <rlrevell@joe-job.com> writes: > > > - disable CONFIG_IA32_EMULATION > > > > I just tried it here. Adding -m64 to CFLAGS/AFLAGS on a native > > 64bit biarch toolchain and it compiled without problems. It ends > > up with -m64 -m32 for the 32bit vsyscall files, but that seems > > to DTRT at least in gcc 4. > > Nope, passing -m64 -m32 does not seem to DTRT on native 32bit biarch > toolchain:
How about this patch?
-Andi
Pass -m64 by default
This might help on distributions that use a 32bit biarch compiler.
Signed-off-by: Andi Kleen <ak@suse.de>
Index: linux/arch/x86_64/Makefile =================================================================== --- linux.orig/arch/x86_64/Makefile +++ linux/arch/x86_64/Makefile @@ -31,6 +31,7 @@ cflags-$(CONFIG_MK8) += $(call cc-option cflags-$(CONFIG_MPSC) += $(call cc-option,-march=nocona) CFLAGS += $(cflags-y) +CFLAGS += -m64 CFLAGS += -mno-red-zone CFLAGS += -mcmodel=kernel CFLAGS += -pipe @@ -52,6 +53,8 @@ CFLAGS += $(call cc-option,-funit-at-a-t # prevent gcc from generating any FP code by mistake CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) +AFLAGS += -m64 + head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o libs-y += arch/x86_64/lib/ Index: linux/arch/x86_64/ia32/vsyscall-sigreturn.S =================================================================== --- linux.orig/arch/x86_64/ia32/vsyscall-sigreturn.S +++ linux/arch/x86_64/ia32/vsyscall-sigreturn.S @@ -7,6 +7,7 @@ * by doing ".balign 32" must match in both versions of the page. */ + .code32 .section .text.sigreturn,"ax" .balign 32 .globl __kernel_sigreturn Index: linux/arch/x86_64/ia32/vsyscall-syscall.S =================================================================== --- linux.orig/arch/x86_64/ia32/vsyscall-syscall.S +++ linux/arch/x86_64/ia32/vsyscall-syscall.S @@ -6,6 +6,7 @@ #include <asm/asm-offsets.h> #include <asm/segment.h> + .code32 .text .section .text.vsyscall,"ax" .globl __kernel_vsyscall Index: linux/arch/x86_64/ia32/vsyscall-sysenter.S =================================================================== --- linux.orig/arch/x86_64/ia32/vsyscall-sysenter.S +++ linux/arch/x86_64/ia32/vsyscall-sysenter.S @@ -5,6 +5,7 @@ #include <asm/ia32_unistd.h> #include <asm/asm-offsets.h> + .code32 .text .section .text.vsyscall,"ax" .globl __kernel_vsyscall - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |