1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_ASM_MISC_H 27 #define _SYS_ASM_MISC_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #ifdef _ASM /* The remainder of this file is only for assembly files */ 36 37 /* Load reg with pointer to per-CPU structure */ 38 #if defined(__amd64) 39 #define LOADCPU(reg) \ 40 movq %gs:CPU_SELF, reg; 41 #else 42 #define LOADCPU(reg) \ 43 movl %gs:CPU_SELF, reg; 44 #endif 45 46 #define RET_INSTR 0xc3 47 #define NOP_INSTR 0x90 48 #define STI_INSTR 0xfb 49 #define JMP_INSTR 0x00eb 50 51 52 #if defined(__i386) 53 54 #define _HOT_PATCH_PROLOG \ 55 push %ebp; \ 56 mov %esp, %ebp; \ 57 push %ebx; \ 58 push %esi; \ 59 push %edi 60 61 #define _HOT_PATCH(srcaddr, dstaddr, size) \ 62 movl $srcaddr, %esi; \ 63 movl $dstaddr, %edi; \ 64 movl $size, %ebx; \ 65 0: pushl $1; \ 66 /*CSTYLED*/ \ 67 movzbl (%esi), %eax; \ 68 pushl %eax; \ 69 pushl %edi; \ 70 call hot_patch_kernel_text; \ 71 addl $12, %esp; \ 72 inc %edi; \ 73 inc %esi; \ 74 dec %ebx; \ 75 test %ebx, %ebx; \ 76 jne 0b 77 78 #define _HOT_PATCH_EPILOG \ 79 pop %edi; \ 80 pop %esi; \ 81 pop %ebx; \ 82 mov %ebp, %esp; \ 83 pop %ebp 84 85 #endif /* __i386 */ 86 87 #if defined(__amd64) 88 89 /* 90 * While as doesn't support fxsaveq/fxrstorq (fxsave/fxrstor with REX.W = 1) 91 * we will use the FXSAVEQ/FXRSTORQ macro 92 */ 93 94 #define FXSAVEQ(x) \ 95 .byte 0x48; \ 96 fxsave x 97 98 #define FXRSTORQ(x) \ 99 .byte 0x48; \ 100 fxrstor x 101 102 #endif /* __amd64 */ 103 104 #endif /* _ASM */ 105 106 #ifdef __cplusplus 107 } 108 #endif 109 110 #endif /* _SYS_ASM_MISC_H */ 111