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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright 2019 Joyent, Inc.
*/
#include <sys/asm_linkage.h>
#include <sys/regset.h>
#include "assym.h"
ENTRY_NP(dtrace_getfp)
movq %rbp, %rax
ret
SET_SIZE(dtrace_getfp)
ENTRY_NP(dtrace_getvmreg)
movq %rdi, %rdx
vmread %rdx, %rax
ret
SET_SIZE(dtrace_getvmreg)
ENTRY(dtrace_cas32)
movl %esi, %eax
lock
cmpxchgl %edx, (%rdi)
ret
SET_SIZE(dtrace_cas32)
ENTRY(dtrace_casptr)
movq %rsi, %rax
lock
cmpxchgq %rdx, (%rdi)
ret
SET_SIZE(dtrace_casptr)
ENTRY(dtrace_caller)
movq $-1, %rax
ret
SET_SIZE(dtrace_caller)
ENTRY(dtrace_copy)
pushq %rbp
call smap_disable
movq %rsp, %rbp
xchgq %rdi, %rsi /* make %rsi source, %rdi dest */
movq %rdx, %rcx /* load count */
repz /* repeat for count ... */
smovb /* move from %ds:rsi to %ed:rdi */
call smap_enable
leave
ret
SET_SIZE(dtrace_copy)
ENTRY(dtrace_copystr)
pushq %rbp
movq %rsp, %rbp
call smap_disable
0:
movb (%rdi), %al /* load from source */
movb %al, (%rsi) /* store to destination */
addq $1, %rdi /* increment source pointer */
addq $1, %rsi /* increment destination pointer */
subq $1, %rdx /* decrement remaining count */
cmpb $0, %al
je 2f
testq $0xfff, %rdx /* test if count is 4k-aligned */
jnz 1f /* if not, continue with copying */
testq $CPU_DTRACE_BADADDR, (%rcx) /* load and test dtrace flags */
jnz 2f
1:
cmpq $0, %rdx
jne 0b
2:
call smap_enable
leave
ret
SET_SIZE(dtrace_copystr)
ENTRY(dtrace_fulword)
call smap_disable
movq (%rdi), %rax
call smap_enable
ret
SET_SIZE(dtrace_fulword)
ENTRY(dtrace_fuword8_nocheck)
call smap_disable
xorq %rax, %rax
movb (%rdi), %al
call smap_enable
ret
SET_SIZE(dtrace_fuword8_nocheck)
ENTRY(dtrace_fuword16_nocheck)
call smap_disable
xorq %rax, %rax
movw (%rdi), %ax
call smap_enable
ret
SET_SIZE(dtrace_fuword16_nocheck)
ENTRY(dtrace_fuword32_nocheck)
call smap_disable
xorq %rax, %rax
movl (%rdi), %eax
call smap_enable
ret
SET_SIZE(dtrace_fuword32_nocheck)
ENTRY(dtrace_fuword64_nocheck)
call smap_disable
movq (%rdi), %rax
call smap_enable
ret
SET_SIZE(dtrace_fuword64_nocheck)
ENTRY(dtrace_probe_error)
pushq %rbp
movq %rsp, %rbp
subq $0x8, %rsp
movq %r9, (%rsp)
movq %r8, %r9
movq %rcx, %r8
movq %rdx, %rcx
movq %rsi, %rdx
movq %rdi, %rsi
movl dtrace_probeid_error(%rip), %edi
call dtrace_probe
addq $0x8, %rsp
leave
ret
SET_SIZE(dtrace_probe_error)
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