Signed-off-by: Tonny Tzeng tonny.tzeng@gmail.com --- arch/arm/cpu/arm720t/start.S | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/arm720t/start.S b/arch/arm/cpu/arm720t/start.S index 90b7240..fd06298 100644 --- a/arch/arm/cpu/arm720t/start.S +++ b/arch/arm/cpu/arm720t/start.S @@ -459,6 +459,12 @@ lock_loop: mov r0, sp .endm
+ .macro bad_restore_user_regs + ldr lr, [sp, #S_PSR] @ Get SVC cpsr + msr spsr_cxsf, lr + ldmia sp, {r0 - pc}^ @ Restore SVC registers + .endm + .macro irq_save_user_regs sub sp, sp, #S_FRAME_SIZE stmia sp, {r0 - r12} @ Calling r0-r12 @@ -510,6 +516,7 @@ undefined_instruction: get_bad_stack bad_save_user_regs bl do_undefined_instruction + bad_restore_user_regs
.align 5 software_interrupt: