diff options
Diffstat (limited to 'sys/cddl/dev/dtrace/powerpc/dtrace_asm.S')
| -rw-r--r-- | sys/cddl/dev/dtrace/powerpc/dtrace_asm.S | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S b/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S new file mode 100644 index 000000000000..3adfbe38cd7f --- /dev/null +++ b/sys/cddl/dev/dtrace/powerpc/dtrace_asm.S @@ -0,0 +1,170 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + * + * Portions Copyright 2012,2013 Justin Hibbits <jhibbits@freebsd.org> + * + * $FreeBSD$ + */ +/* + * Copyright 2004 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#include "assym.s" + +#define _ASM + +#include <sys/cpuvar_defs.h> +#include <sys/dtrace.h> + +#include <machine/asm.h> +/* +#include <machine/cpu.h> +*/ + +/* + * Primitives + */ + + .text + +/* +void dtrace_membar_producer(void) +*/ +ASENTRY_NOPROF(dtrace_membar_producer) + sync + blr +END(dtrace_membar_producer) + +/* +void dtrace_membar_consumer(void) +*/ +ASENTRY_NOPROF(dtrace_membar_consumer) + isync + blr +END(dtrace_membar_consumer) + +/* +dtrace_icookie_t dtrace_interrupt_disable(void) +*/ +ASENTRY_NOPROF(dtrace_interrupt_disable) + mfmsr %r3 + andi. %r0,%r3,~PSL_EE@l + mtmsr %r0 + blr +END(dtrace_interrupt_disable) + +/* +void dtrace_interrupt_enable(dtrace_icookie_t cookie) +*/ +ASENTRY_NOPROF(dtrace_interrupt_enable) + mtmsr %r3 + blr +END(dtrace_interrupt_enable) + +/* +uint32_t dtrace_cas32(uint32_t *target, uint32_t cmp, uint32_t new) +*/ +ASENTRY_NOPROF(dtrace_cas32) +1: + lwarx %r0,0,%r3 + cmpw %r4,%r0 + bne 2f + stwcx. %r5,0,%r3 + bne 1b +2: mr %r3,%r0 + blr +END(dtrace_cas32) + +/* +void * +dtrace_casptr(void *target, void *cmp, void *new) +*/ +ASENTRY_NOPROF(dtrace_casptr) +#ifdef __powerpc64__ +1: + ldarx %r0,0,%r3 + cmpd %r4,%r0 + bne 2f + stdcx. %r5,0,%r3 + bne 1b +#else +1: + lwarx %r0,0,%r3 + cmpw %r4,%r0 + bne 2f + stwcx. %r5,0,%r3 + bne 1b +#endif +2: mr %r3,%r0 + blr +END(dtrace_casptr) + + +/* +XXX: unoptimized +void +dtrace_copy(uintptr_t src, uintptr_t dest, size_t size) +*/ +ASENTRY_NOPROF(dtrace_copy) + subi %r7,%r3,1 + subi %r8,%r4,1 + mtctr %r5 +1: + lbzu %r3,1(%r7) + stbu %r3,1(%r8) + bdnz 1b +2: + blr +END(dtrace_copy) + +/* +void +dtrace_copystr(uintptr_t uaddr, uintptr_t kaddr, size_t size, + volatile uint16_t *flags) +*/ +ASENTRY_NOPROF(dtrace_copystr) + addme %r7,%r3 + addme %r8,%r4 +1: + lbzu %r3,1(%r7) + stbu %r3,1(%r8) + addme %r5,%r5 + beq 2f + or %r3,%r3,%r3 + beq 2f + andi. %r0,%r5,0x0fff + beq 2f + lwz %r0,0(%r6) + andi. %r0,%r0,CPU_DTRACE_BADADDR + beq 1b +2: + blr +END(dtrace_copystr) + +/* +uintptr_t +dtrace_caller(int aframes) +*/ +ASENTRY_NOPROF(dtrace_caller) + li %r3, -1 + blr +END(dtrace_caller) |