diff options
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 86c92523a346..bd623b73445f 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -14,7 +14,6 @@ * Note: there is a StrongARM bug in the STMIA rn, {regs}^ instruction that causes * it to save wrong values... Be aware! */ -#include <linux/config.h> #include <asm/memory.h> #include <asm/glue.h> @@ -192,6 +191,9 @@ __dabt_svc: __irq_svc: svc_entry +#ifdef CONFIG_TRACE_IRQFLAGS + bl trace_hardirqs_off +#endif #ifdef CONFIG_PREEMPT get_thread_info tsk ldr r8, [tsk, #TI_PREEMPT] @ get preempt count @@ -212,6 +214,10 @@ preempt_return: #endif ldr r0, [sp, #S_PSR] @ irqs are already disabled msr spsr_cxsf, r0 +#ifdef CONFIG_TRACE_IRQFLAGS + tst r0, #PSR_I_BIT + bleq trace_hardirqs_on +#endif ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr .ltorg @@ -399,6 +405,9 @@ __dabt_usr: __irq_usr: usr_entry +#ifdef CONFIG_TRACE_IRQFLAGS + bl trace_hardirqs_off +#endif get_thread_info tsk #ifdef CONFIG_PREEMPT ldr r8, [tsk, #TI_PREEMPT] @ get preempt count @@ -413,6 +422,9 @@ __irq_usr: teq r0, r7 strne r0, [r0, -r0] #endif +#ifdef CONFIG_TRACE_IRQFLAGS + bl trace_hardirqs_on +#endif mov why, #0 b ret_to_user @@ -492,9 +504,15 @@ call_fpe: b do_fpe @ CP#1 (FPE) b do_fpe @ CP#2 (FPE) mov pc, lr @ CP#3 +#ifdef CONFIG_CRUNCH + b crunch_task_enable @ CP#4 (MaverickCrunch) + b crunch_task_enable @ CP#5 (MaverickCrunch) + b crunch_task_enable @ CP#6 (MaverickCrunch) +#else mov pc, lr @ CP#4 mov pc, lr @ CP#5 mov pc, lr @ CP#6 +#endif mov pc, lr @ CP#7 mov pc, lr @ CP#8 mov pc, lr @ CP#9 @@ -584,9 +602,7 @@ ENTRY(__switch_to) #ifdef CONFIG_MMU mcr p15, 0, r6, c3, c0, 0 @ Set domain register #endif -#if defined(CONFIG_IWMMXT) - bl iwmmxt_task_switch -#elif defined(CONFIG_CPU_XSCALE) +#if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT) add r4, r2, #TI_CPU_DOMAIN + 40 @ cpu_context_save->extra ldmib r4, {r4, r5} mar acc0, r4, r5 @@ -631,6 +647,14 @@ ENTRY(__switch_to) * purpose. */ + .macro usr_ret, reg +#ifdef CONFIG_ARM_THUMB + bx \reg +#else + mov pc, \reg +#endif + .endm + .align 5 .globl __kuser_helper_start __kuser_helper_start: @@ -672,7 +696,7 @@ __kuser_memory_barrier: @ 0xffff0fa0 #if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_SMP) mcr p15, 0, r0, c7, c10, 5 @ dmb #endif - mov pc, lr + usr_ret lr .align 5 @@ -775,7 +799,7 @@ __kuser_cmpxchg: @ 0xffff0fc0 mov r0, #-1 adds r0, r0, #0 #endif - mov pc, lr + usr_ret lr #else @@ -789,7 +813,7 @@ __kuser_cmpxchg: @ 0xffff0fc0 #ifdef CONFIG_SMP mcr p15, 0, r0, c7, c10, 5 @ dmb #endif - mov pc, lr + usr_ret lr #endif @@ -831,16 +855,11 @@ __kuser_cmpxchg: @ 0xffff0fc0 __kuser_get_tls: @ 0xffff0fe0 #if !defined(CONFIG_HAS_TLS_REG) && !defined(CONFIG_TLS_REG_EMUL) - ldr r0, [pc, #(16 - 8)] @ TLS stored at 0xffff0ff0 - mov pc, lr - #else - mrc p15, 0, r0, c13, c0, 3 @ read TLS register - mov pc, lr - #endif + usr_ret lr .rep 5 .word 0 @ pad up to __kuser_helper_version |