asm_misc.h revision ae115bc77f6fcde83175c75b4206dc2e50747966
/*
* 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.
*/
#ifndef _SYS_ASM_MISC_H
#define _SYS_ASM_MISC_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _ASM /* The remainder of this file is only for assembly files */
/* Load reg with pointer to per-CPU structure */
#if defined(__amd64)
#define LOADCPU(reg) \
movq %gs:CPU_SELF, reg;
#else
#define LOADCPU(reg) \
movl %gs:CPU_SELF, reg;
#endif
#define RET_INSTR 0xc3
#define NOP_INSTR 0x90
#define STI_INSTR 0xfb
#define JMP_INSTR 0x00eb
#if defined(__i386)
#define _HOT_PATCH_PROLOG \
push %ebp; \
mov %esp, %ebp; \
push %ebx; \
push %esi; \
push %edi
#define _HOT_PATCH(srcaddr, dstaddr, size) \
movl $srcaddr, %esi; \
movl $dstaddr, %edi; \
movl $size, %ebx; \
0: pushl $1; \
/*CSTYLED*/ \
movzbl (%esi), %eax; \
pushl %eax; \
pushl %edi; \
call hot_patch_kernel_text; \
addl $12, %esp; \
inc %edi; \
inc %esi; \
dec %ebx; \
test %ebx, %ebx; \
jne 0b
#define _HOT_PATCH_EPILOG \
pop %edi; \
pop %esi; \
pop %ebx; \
mov %ebp, %esp; \
pop %ebp
#endif /* __i386 */
#endif /* _ASM */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_ASM_MISC_H */