| Message ID | 52171720.4050501@asianux.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 08/23/2013 04:02 PM, Chen Gang wrote: > When vexpress kernel is compiled for v6, it still can support armv7 > instructions (hardware still support), so need let compiler know about > it for related inline assembly code, or compiling will fail. > Hmm... need change "compiled for v6, it still can" to "compiled for both v6 and v7, it of cause can". Thanks. > The related failure command: > > arm-linux-gnueabi-gcc -Wp,-MD,arch/arm/mach-vexpress/.dcscb.o.d -nostdinc -isystem /usr/lib/gcc/arm-linux-gnueabi/4.7/include -I/root/linux-next/arch/arm/include -Iarch/arm/include/generated -Iinclude -I/root/linux-next/arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I/root/linux-next/include/uapi -Iinclude/generated/uapi -include /root/linux-next/include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -Werror=implicit-int -Werror=strict-prototypes -Os -Wno-maybe-uninitialized -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fstack-protector -mabi=aapcs-linux -mno-thumb-interwork -funwind-tables -marm -D__LINUX_ARM_ARCH__=6 -march=armv6k -mtune=arm1136j-s -msoft-float -Uarm -fno-reorder-blocks -fno-ipa-cp-clone -fno-partial-inlining -Wframe-larger-than=1024 -Wno-unused-but- set-varia bl > e -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -femit-struct-debug-baseonly -fno-var-tracking -pg -fno-inline-functions-called-once -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -DCC_HAVE_ASM_GOTO -I/root/linux-next/arch/arm/mach-vexpress/include -I/root/linux-next/arch/arm/plat-versatile/include -W -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(dcscb)" -D"KBUILD_MODNAME=KBUILD_STR(dcscb)" -c -o arch/arm/mach-vexpress/.tmp_dcscb.o arch/arm/mach-vexpress/dcscb.c > > The related error: > > /tmp/ccOMIprI.s: Assembler messages: > /tmp/ccOMIprI.s:507: Error: selected processor does not support ARM mode `isb ' > /tmp/ccOMIprI.s:513: Error: selected processor does not support ARM mode `isb ' > /tmp/ccOMIprI.s:514: Error: selected processor does not support ARM mode `dsb ' > /tmp/ccOMIprI.s:584: Error: selected processor does not support ARM mode `isb ' > /tmp/ccOMIprI.s:590: Error: selected processor does not support ARM mode `isb ' > /tmp/ccOMIprI.s:591: Error: selected processor does not support ARM mode `dsb ' > make[1]: *** [arch/arm/mach-vexpress/dcscb.o] Error 1 > make: *** [arch/arm/mach-vexpress] Error 2 > > > Signed-off-by: Chen Gang <gang.chen@asianux.com> > --- > arch/arm/mach-vexpress/Makefile | 3 +++ > 1 files changed, 3 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile > index 36ea824..f224577 100644 > --- a/arch/arm/mach-vexpress/Makefile > +++ b/arch/arm/mach-vexpress/Makefile > @@ -10,3 +10,6 @@ obj-$(CONFIG_ARCH_VEXPRESS_DCSCB) += dcscb.o dcscb_setup.o > obj-$(CONFIG_ARCH_VEXPRESS_TC2_PM) += tc2_pm.o spc.o > obj-$(CONFIG_SMP) += platsmp.o > obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o > + > +CFLAGS_dcscb.o +=-march=armv7-a > +CFLAGS_tc2_pm.o +=-march=armv7-a >
diff --git a/arch/arm/mach-vexpress/Makefile b/arch/arm/mach-vexpress/Makefile index 36ea824..f224577 100644 --- a/arch/arm/mach-vexpress/Makefile +++ b/arch/arm/mach-vexpress/Makefile @@ -10,3 +10,6 @@ obj-$(CONFIG_ARCH_VEXPRESS_DCSCB) += dcscb.o dcscb_setup.o obj-$(CONFIG_ARCH_VEXPRESS_TC2_PM) += tc2_pm.o spc.o obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o + +CFLAGS_dcscb.o +=-march=armv7-a +CFLAGS_tc2_pm.o +=-march=armv7-a
When vexpress kernel is compiled for v6, it still can support armv7 instructions (hardware still support), so need let compiler know about it for related inline assembly code, or compiling will fail. The related failure command: arm-linux-gnueabi-gcc -Wp,-MD,arch/arm/mach-vexpress/.dcscb.o.d -nostdinc -isystem /usr/lib/gcc/arm-linux-gnueabi/4.7/include -I/root/linux-next/arch/arm/include -Iarch/arm/include/generated -Iinclude -I/root/linux-next/arch/arm/include/uapi -Iarch/arm/include/generated/uapi -I/root/linux-next/include/uapi -Iinclude/generated/uapi -include /root/linux-next/include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -Werror=implicit-int -Werror=strict-prototypes -Os -Wno-maybe-uninitialized -fno-dwarf2-cfi-asm -fno-omit-frame-pointer -mapcs -mno-sched-prolog -fstack-protector -mabi=aapcs-linux -mno-thumb-interwork -funwind-tables -marm -D__LINUX_ARM_ARCH__=6 -march=armv6k -mtune=arm1136j-s -msoft-float -Uarm -fno-reorder-blocks -fno-ipa-cp-clone -fno-partial-inlining -Wframe-larger-than=1024 -Wno-unused-but-se t-variabl e -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -femit-struct-debug-baseonly -fno-var-tracking -pg -fno-inline-functions-called-once -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -DCC_HAVE_ASM_GOTO -I/root/linux-next/arch/arm/mach-vexpress/include -I/root/linux-next/arch/arm/plat-versatile/include -W -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(dcscb)" -D"KBUILD_MODNAME=KBUILD_STR(dcscb)" -c -o arch/arm/mach-vexpress/.tmp_dcscb.o arch/arm/mach-vexpress/dcscb.c The related error: /tmp/ccOMIprI.s: Assembler messages: /tmp/ccOMIprI.s:507: Error: selected processor does not support ARM mode `isb ' /tmp/ccOMIprI.s:513: Error: selected processor does not support ARM mode `isb ' /tmp/ccOMIprI.s:514: Error: selected processor does not support ARM mode `dsb ' /tmp/ccOMIprI.s:584: Error: selected processor does not support ARM mode `isb ' /tmp/ccOMIprI.s:590: Error: selected processor does not support ARM mode `isb ' /tmp/ccOMIprI.s:591: Error: selected processor does not support ARM mode `dsb ' make[1]: *** [arch/arm/mach-vexpress/dcscb.o] Error 1 make: *** [arch/arm/mach-vexpress] Error 2 Signed-off-by: Chen Gang <gang.chen@asianux.com> --- arch/arm/mach-vexpress/Makefile | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)