Hi,
Here is version 3 of fix to armv7-m build failure in sigreturn_codes.S. It is based on .org directive Dave's suggestion on last email in [1].
It uses conditional compilation and it uses .org directive to keep sigreturn_codes layout.
Note I did not use ARM and THUMB macros because those switch between CONFIG_THUMB2_KERNEL and not. On v7a kernel we need both arm and thumb snipets regardless of CONFIG_THUMB2_KERNEL setting. And conditional compilation only kicks in with CONFIG_CPU_THUMBONLY, for that local ARM_INSTR macro is created.
Version 1 [1] used conditional compilation and added thumb2 nop instructions in CONFIG_CPU_THUMBONLY
Version 2 [2] tried to use '.acrh armv4t' directive to allow both arm and thumb2 opcodes, but solution deemed to be too fragile.
Fix was tested linux-next with efm32_defconfig build (along with few other fixes) rmk-next BE/LE arndale build/boot and LTP rt_sigaction0? tests run
Dave, I've added your name with Suggested-by tag, please let me know if it is not OK with you, I'll remove it then.
Uwe, is it possible for you to test that this fix runs on efm32? Sorry, for multiple requests.
Thanks, Victor
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-November/210393.h... [2] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-November/210949.h...
Victor Kamensky (1): ARM: signal: fix armv7-m build issue in sigreturn_codes.S
arch/arm/kernel/sigreturn_codes.S | 40 ++++++++++++++++++++++++++++++--------- 1 file changed, 31 insertions(+), 9 deletions(-)