Philipp,
On 08/30/2017 04:59 PM, Dr. Philipp Tomsich wrote:
Kever,
I took a quick look and this seems to be an issue with CONFIG macros. This is failing, because the assembly (after preprocessing) requests regular ARM mode and supplies Thumb mnemonics (e.g. nop.w).
The trigger seems to be the following CONFIG_IS_ENABLED check in arch/arm/lib/memcpy.S: #if CONFIG_IS_ENABLED(SYS_THUMB_BUILD) && !defined(MEMCPY_NO_THUMB_BUILD) .thumb .thumb_func #endif
This is the first point I checked, and I'm sure .thunb and .thumb_func are there. Both and the SPL_SYS_THUMB_BUILD and SYS_THUMB_BUILD are defined, they are enabled by default in armv7.
I checked that this compiles correctly, if I supply -DCONFIG_SPL_SYS_THUMB_BUILD on the commandline. Works as expected.
I check with command below and the error still there. arm-linux-gnueabihf-gcc -Wp,-MD,tpl/arch/arm/lib/.memcpy.o.d -nostdinc -isystem /usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/include -Iinclude -I./arch/arm/include -include ./include/linux/kconfig.h -D__KERNEL__ -D__UBOOT__ -DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD -DCONFIG_SPL_SYS_THUMB_BUILD -D__ASSEMBLY__ -g -DCONFIG_THUMB2_KERNEL -D__ARM__ -Wa,-mimplicit-it=always -mthumb -mthumb-interwork -mabi=aapcs-linux -mno-unaligned-access -ffunction-sections -fdata-sections -fno-common -ffixed-r9 -msoft-float -pipe -march=armv7-a -D__LINUX_ARM_ARCH__=7 -I./arch/arm/mach-rockchip/include -c -o tpl/arch/arm/lib/memcpy.o arch/arm/lib/memcpy.S
Thanks, - Kever
So, you’ll just have to enable SPL_SYS_THUMB_BUILD for you configuration (see also Tom’s commit message in commit 3a649407a49b041ceb826d55b5919dc8297f8965).
Regards, Philipp.
On 30 Aug 2017, at 10:33, Kever Yang kever.yang@rock-chips.com wrote:
Hi I get build error when I try to enable TPL for a new armv7 chip, the error happen when I build arch/arm/lib/memcpy.S,
the file can pass the build for SPL but failed in TPL build, the log is here:
The build can success if I remove the '-DCONFIT_TPL_BUILD' in red, any people can help on this? arm-linux-gnueabihf-gcc -Wp,-MD,tpl/arch/arm/lib/.memcpy.o.d -nostdinc -isystem /usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/include -Iinclude -I./arch/arm/include -include ./include/linux/kconfig.h -D__KERNEL__ -D__UBOOT__ -DCONFIG_SPL_BUILD -DCONFIG_TPL_BUILD -D__ASSEMBLY__ -g -DCONFIG_THUMB2_KERNEL -D__ARM__ -Wa,-mimplicit-it=always -mthumb -mthumb-interwork -mabi=aapcs-linux -mno-unaligned-access -ffunction-sections -fdata-sections -fno-common -ffixed-r9 -msoft-float -pipe -march=armv7-a -D__LINUX_ARM_ARCH__=7 -I./arch/arm/mach-rockchip/include -c -o tpl/arch/arm/lib/memcpy.o arch/arm/lib/memcpy.S arch/arm/lib/memcpy.S: Assembler messages: arch/arm/lib/memcpy.S:114: Error: width suffixes are invalid in ARM mode -- `nop.w' arch/arm/lib/memcpy.S:115: Error: width suffixes are invalid in ARM mode -- `ldr.w r3,[r1],#4' arch/arm/lib/memcpy.S:116: Error: width suffixes are invalid in ARM mode -- `ldr.w r4,[r1],#4' arch/arm/lib/memcpy.S:117: Error: width suffixes are invalid in ARM mode -- `ldr.w r5,[r1],#4' arch/arm/lib/memcpy.S:118: Error: width suffixes are invalid in ARM mode -- `ldr.w r6,[r1],#4' arch/arm/lib/memcpy.S:119: Error: width suffixes are invalid in ARM mode -- `ldr.w r7,[r1],#4' arch/arm/lib/memcpy.S:120: Error: width suffixes are invalid in ARM mode -- `ldr.w r8,[r1],#4' arch/arm/lib/memcpy.S:121: Error: width suffixes are invalid in ARM mode -- `ldr.w lr,[r1],#4' ...
Thanks,
- Kever