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Diffstat (limited to 'sys/powerpc/booke/swtch.S')
| -rw-r--r-- | sys/powerpc/booke/swtch.S | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/sys/powerpc/booke/swtch.S b/sys/powerpc/booke/swtch.S deleted file mode 100644 index 88cbf29..0000000 --- a/sys/powerpc/booke/swtch.S +++ /dev/null @@ -1,159 +0,0 @@ -/*- - * Copyright (C) 2001 Benno Rice - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * from: $NetBSD: locore.S,v 1.24 2000/05/31 05:09:17 thorpej Exp $ - * from: $FreeBSD$ - * - * $FreeBSD$ - */ -/*- - * Copyright (C) 1995, 1996 Wolfgang Solfrank. - * Copyright (C) 1995, 1996 TooLs GmbH. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by TooLs GmbH. - * 4. The name of TooLs GmbH may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "assym.s" - -#include <sys/syscall.h> - -#include <machine/trap.h> -#include <machine/param.h> -#include <machine/asm.h> -#include <machine/spr.h> - -/* - * void cpu_throw(struct thread *old, struct thread *new) - */ -ENTRY(cpu_throw) - mr %r15, %r4 - b cpu_switchin - -/* - * void cpu_switch(struct thread *old, struct thread *new, struct mutex *mtx);) - * - * Switch to a new thread saving the current state in the old thread. - */ -ENTRY(cpu_switch) - stw %r5, TD_LOCK(%r3) - - lwz %r5, TD_PCB(%r3) /* Get the old thread's PCB ptr */ - - mr %r12, %r2 - stmw %r12, PCB_CONTEXT(%r5) /* Save the non-volatile GP regs. - These can now be used for scratch */ - - mfcr %r16 /* Save the condition register */ - stw %r16, PCB_CR(%r5) - mflr %r16 /* Save the link register */ - stw %r16, PCB_LR(%r5) - mfctr %r16 - stw %r16, PCB_BOOKE_CTR(%r5) - mfxer %r16 - stw %r16, PCB_BOOKE_XER(%r5) - mfspr %r16, SPR_DBCR0 - stw %r16, PCB_BOOKE_DBCR0(%r5) - - stw %r1, PCB_SP(%r5) /* Save the stack pointer */ - - mr %r14, %r3 /* Copy the old thread ptr... */ - mr %r15, %r4 /* and the new thread ptr in scratch */ - - bl pmap_deactivate /* Deactivate the current pmap */ - -cpu_switchin: - mr %r3, %r15 /* Get new thread ptr */ - bl pmap_activate /* Activate the new address space */ - - 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 %r17, PC_CURPCB(%r7) - - mr %r3, %r17 /* Recover PCB ptr */ - lmw %r12, PCB_CONTEXT(%r3) /* Load the non-volatile GP regs */ - mr %r2, %r12 - lwz %r5, PCB_CR(%r3) /* Load the condition register */ - mtcr %r5 - lwz %r5, PCB_LR(%r3) /* Load the link register */ - mtlr %r5 - lwz %r5, PCB_BOOKE_CTR(%r3) - mtctr %r5 - lwz %r5, PCB_BOOKE_XER(%r3) - mtxer %r5 - lwz %r5, PCB_BOOKE_DBCR0(%r3) - mtspr SPR_DBCR0, %r5 - - lwz %r1, PCB_SP(%r3) /* Load the stack pointer */ - blr - -/* - * savectx(pcb) - * Update pcb, saving current processor state - */ -ENTRY(savectx) - mr %r12, %r2 - stmw %r12, PCB_CONTEXT(%r3) /* Save the non-volatile GP regs */ - mfcr %r4 /* Save the condition register */ - stw %r4, PCB_CONTEXT(%r3) - blr - -/* - * fork_trampoline() - * Set up the return from cpu_fork() - */ -ENTRY(fork_trampoline) - lwz %r3, CF_FUNC(%r1) - lwz %r4, CF_ARG0(%r1) - lwz %r5, CF_ARG1(%r1) - bl fork_exit - addi %r1, %r1, CF_SIZE-FSP /* Allow 8 bytes in front of - trapframe to simulate FRAME_SETUP - does when allocating space for - a frame pointer/saved LR */ - b trapexit |
