diff options
Diffstat (limited to 'sys/powerpc/aim/swtch32.S')
| -rw-r--r-- | sys/powerpc/aim/swtch32.S | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/sys/powerpc/aim/swtch32.S b/sys/powerpc/aim/swtch32.S index cd141aa..a44b861 100644 --- a/sys/powerpc/aim/swtch32.S +++ b/sys/powerpc/aim/swtch32.S @@ -69,7 +69,7 @@ * void cpu_throw(struct thread *old, struct thread *new) */ ENTRY(cpu_throw) - mr %r15, %r4 + mr %r2, %r4 b cpu_switchin /* @@ -89,10 +89,9 @@ ENTRY(cpu_switch) mflr %r16 /* Save the link register */ stw %r16,PCB_LR(%r6) stw %r1,PCB_SP(%r6) /* Save the stack pointer */ - stw %r2,PCB_TOC(%r6) /* Save the TOC pointer */ mr %r14,%r3 /* Copy the old thread ptr... */ - mr %r15,%r4 /* and the new thread ptr in scratch */ + mr %r2,%r4 /* and the new thread ptr in curthread */ mr %r16,%r5 /* and the new lock */ mr %r17,%r6 /* and the PCB */ @@ -122,24 +121,24 @@ cpu_switchin: lis %r6,blocked_lock@ha addi %r6,%r6,blocked_lock@l blocked_loop: - lwz %r7,TD_LOCK(%r15) + lwz %r7,TD_LOCK(%r2) cmpw %r6,%r7 beq blocked_loop #endif mfsprg %r7,0 /* Get the pcpu pointer */ - stw %r15,PC_CURTHREAD(%r7) /* Store new current thread */ - lwz %r17,TD_PCB(%r15) /* Store new current PCB */ + stw %r2,PC_CURTHREAD(%r7) /* Store new current thread */ + lwz %r17,TD_PCB(%r2) /* Store new current PCB */ stw %r17,PC_CURPCB(%r7) - mr %r3,%r15 /* Get new thread ptr */ + mr %r3,%r2 /* Get new thread ptr */ bl pmap_activate /* Activate the new address space */ lwz %r6, PCB_FLAGS(%r17) /* Restore FPU context if needed */ andi. %r6, %r6, PCB_FPU beq .L3 - mr %r3,%r15 /* Pass curthread to enable_fpu */ + mr %r3,%r2 /* Pass curthread to enable_fpu */ bl enable_fpu .L3: @@ -147,7 +146,7 @@ blocked_loop: /* Restore Altivec context if needed */ andi. %r6, %r6, PCB_VEC beq .L4 - mr %r3,%r15 /* Pass curthread to enable_vec */ + mr %r3,%r2 /* Pass curthread to enable_vec */ bl enable_vec /* thread to restore is in r3 */ @@ -163,7 +162,6 @@ blocked_loop: mtsr USER_SR,%r5 isync lwz %r1,PCB_SP(%r3) /* Load the stack pointer */ - lwz %r2,PCB_TOC(%r3) /* Load the TOC pointer */ /* * Perform a dummy stwcx. to clear any reservations we may have * inherited from the previous thread. It doesn't matter if the |
