diff options
Diffstat (limited to 'arch/arm/kernel/entry-armv.S')
| -rw-r--r-- | arch/arm/kernel/entry-armv.S | 59 |
1 files changed, 8 insertions, 51 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 0f82098c9bfe..582b405befc5 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -192,18 +192,6 @@ __dabt_svc: svc_entry mov r2, sp dabt_helper - - @ - @ IRQs off again before pulling preserved data off the stack - @ - disable_irq_notrace - -#ifdef CONFIG_TRACE_IRQFLAGS - tst r5, #PSR_I_BIT - bleq trace_hardirqs_on - tst r5, #PSR_I_BIT - blne trace_hardirqs_off -#endif svc_exit r5 @ return from exception UNWIND(.fnend ) ENDPROC(__dabt_svc) @@ -223,12 +211,7 @@ __irq_svc: blne svc_preempt #endif -#ifdef CONFIG_TRACE_IRQFLAGS - @ The parent context IRQs must have been enabled to get here in - @ the first place, so there's no point checking the PSR I bit. - bl trace_hardirqs_on -#endif - svc_exit r5 @ return from exception + svc_exit r5, irq = 1 @ return from exception UNWIND(.fnend ) ENDPROC(__irq_svc) @@ -295,22 +278,8 @@ __und_svc_fault: mov r0, sp @ struct pt_regs *regs bl __und_fault - @ - @ IRQs off again before pulling preserved data off the stack - @ __und_svc_finish: - disable_irq_notrace - - @ - @ restore SPSR and restart the instruction - @ ldr r5, [sp, #S_PSR] @ Get SVC cpsr -#ifdef CONFIG_TRACE_IRQFLAGS - tst r5, #PSR_I_BIT - bleq trace_hardirqs_on - tst r5, #PSR_I_BIT - blne trace_hardirqs_off -#endif svc_exit r5 @ return from exception UNWIND(.fnend ) ENDPROC(__und_svc) @@ -320,18 +289,6 @@ __pabt_svc: svc_entry mov r2, sp @ regs pabt_helper - - @ - @ IRQs off again before pulling preserved data off the stack - @ - disable_irq_notrace - -#ifdef CONFIG_TRACE_IRQFLAGS - tst r5, #PSR_I_BIT - bleq trace_hardirqs_on - tst r5, #PSR_I_BIT - blne trace_hardirqs_off -#endif svc_exit r5 @ return from exception UNWIND(.fnend ) ENDPROC(__pabt_svc) @@ -396,6 +353,7 @@ ENDPROC(__pabt_svc) #ifdef CONFIG_IRQSOFF_TRACER bl trace_hardirqs_off #endif + ct_user_exit save = 0 .endm .macro kuser_cmpxchg_check @@ -562,21 +520,21 @@ ENDPROC(__und_usr) @ Fall-through from Thumb-2 __und_usr @ #ifdef CONFIG_NEON + get_thread_info r10 @ get current thread adr r6, .LCneon_thumb_opcodes b 2f #endif call_fpe: + get_thread_info r10 @ get current thread #ifdef CONFIG_NEON adr r6, .LCneon_arm_opcodes -2: - ldr r7, [r6], #4 @ mask value - cmp r7, #0 @ end mask? - beq 1f - and r8, r0, r7 +2: ldr r5, [r6], #4 @ mask value ldr r7, [r6], #4 @ opcode bits matching in mask + cmp r5, #0 @ end mask? + beq 1f + and r8, r0, r5 cmp r8, r7 @ NEON instruction? bne 2b - get_thread_info r10 mov r7, #1 strb r7, [r10, #TI_USED_CP + 10] @ mark CP#10 as used strb r7, [r10, #TI_USED_CP + 11] @ mark CP#11 as used @@ -586,7 +544,6 @@ call_fpe: tst r0, #0x08000000 @ only CDP/CPRT/LDC/STC have bit 27 tstne r0, #0x04000000 @ bit 26 set on both ARM and Thumb-2 moveq pc, lr - get_thread_info r10 @ get current thread and r8, r0, #0x00000f00 @ mask out CP number THUMB( lsr r8, r8, #8 ) mov r7, #1 |