diff options
Diffstat (limited to 'arch/openrisc/kernel/entry.S')
| -rw-r--r-- | arch/openrisc/kernel/entry.S | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/arch/openrisc/kernel/entry.S b/arch/openrisc/kernel/entry.S index c9f48e750b72..440711d7bf40 100644 --- a/arch/openrisc/kernel/entry.S +++ b/arch/openrisc/kernel/entry.S @@ -106,8 +106,6 @@ l.mtspr r0,r3,SPR_EPCR_BASE ;\ l.lwz r3,PT_SR(r1) ;\ l.mtspr r0,r3,SPR_ESR_BASE ;\ - l.lwz r3,PT_FPCSR(r1) ;\ - l.mtspr r0,r3,SPR_FPCSR ;\ l.lwz r2,PT_GPR2(r1) ;\ l.lwz r3,PT_GPR3(r1) ;\ l.lwz r4,PT_GPR4(r1) ;\ @@ -177,8 +175,6 @@ handler: ;\ /* r30 already save */ ;\ l.sw PT_GPR31(r1),r31 ;\ TRACE_IRQS_OFF_ENTRY ;\ - l.mfspr r30,r0,SPR_FPCSR ;\ - l.sw PT_FPCSR(r1),r30 ;\ /* Store -1 in orig_gpr11 for non-syscall exceptions */ ;\ l.addi r30,r0,-1 ;\ l.sw PT_ORIG_GPR11(r1),r30 @@ -219,8 +215,6 @@ handler: ;\ /* Store -1 in orig_gpr11 for non-syscall exceptions */ ;\ l.addi r30,r0,-1 ;\ l.sw PT_ORIG_GPR11(r1),r30 ;\ - l.mfspr r30,r0,SPR_FPCSR ;\ - l.sw PT_FPCSR(r1),r30 ;\ l.addi r3,r1,0 ;\ /* r4 is exception EA */ ;\ l.addi r5,r0,vector ;\ @@ -852,6 +846,7 @@ _syscall_badsys: EXCEPTION_ENTRY(_fpe_trap_handler) CLEAR_LWA_FLAG(r3) + /* r4: EA of fault (set by EXCEPTION_HANDLE) */ l.jal do_fpe_trap l.addi r3,r1,0 /* pt_regs */ @@ -1100,10 +1095,6 @@ ENTRY(_switch) l.sw PT_GPR28(r1),r28 l.sw PT_GPR30(r1),r30 - /* Store the old FPU state to new pt_regs */ - l.mfspr r29,r0,SPR_FPCSR - l.sw PT_FPCSR(r1),r29 - l.addi r11,r10,0 /* Save old 'current' to 'last' return value*/ /* We use thread_info->ksp for storing the address of the above @@ -1126,10 +1117,6 @@ ENTRY(_switch) l.lwz r29,PT_SP(r1) l.sw TI_KSP(r10),r29 - /* Restore the old value of FPCSR */ - l.lwz r29,PT_FPCSR(r1) - l.mtspr r0,r29,SPR_FPCSR - /* ...and restore the registers, except r11 because the return value * has already been set above. */ |