projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d21ac55 A |
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 | /* | |
| b0d623f7 | 22 | * Copyright 2008 Sun Microsystems, Inc. All rights reserved. |
| 2d21ac55 A |
23 | * Use is subject to license terms. |
| 24 | */ | |
| 25 | ||
| b0d623f7 | 26 | /* #pragma ident "@(#)sdt.c 1.9 08/07/01 SMI" */ |
| 2d21ac55 A |
27 | |
| 28 | #ifdef KERNEL | |
| 29 | #ifndef _KERNEL | |
| 30 | #define _KERNEL /* Solaris vs. Darwin */ | |
| 31 | #endif | |
| 32 | #endif | |
| 33 | ||
| 34 | #define MACH__POSIX_C_SOURCE_PRIVATE 1 /* pulls in suitable savearea from mach/ppc/thread_status.h */ | |
| 35 | #include <kern/cpu_data.h> | |
| 36 | #include <kern/thread.h> | |
| 37 | #include <mach/thread_status.h> | |
| 38 | #include <mach/vm_param.h> | |
| 39 | ||
| 40 | #include <sys/dtrace.h> | |
| 41 | #include <sys/dtrace_impl.h> | |
| 42 | ||
| 43 | #include <sys/dtrace_glue.h> | |
| 44 | ||
| 45 | #include <sys/sdt_impl.h> | |
| 46 | ||
| 47 | extern sdt_probe_t **sdt_probetab; | |
| 48 | ||
| b0d623f7 | 49 | #if defined(__i386__) |
| 2d21ac55 A |
50 | /*ARGSUSED*/ |
| 51 | int | |
| 52 | sdt_invop(uintptr_t addr, uintptr_t *stack, uintptr_t eax) | |
| 53 | { | |
| 54 | #pragma unused(eax) | |
| 55 | uintptr_t stack0 = 0, stack1 = 0, stack2 = 0, stack3 = 0, stack4 = 0; | |
| 56 | sdt_probe_t *sdt = sdt_probetab[SDT_ADDR2NDX(addr)]; | |
| 57 | ||
| 58 | for (; sdt != NULL; sdt = sdt->sdp_hashnext) { | |
| 59 | if ((uintptr_t)sdt->sdp_patchpoint == addr) { | |
| 60 | uintptr_t *stacktop; | |
| 61 | if (CPU_ON_INTR(CPU)) | |
| 62 | stacktop = (uintptr_t *)dtrace_get_cpu_int_stack_top(); | |
| 63 | else | |
| b0d623f7 | 64 | stacktop = (uintptr_t *)(dtrace_get_kernel_stack(current_thread()) + kernel_stack_size); |
| 2d21ac55 A |
65 | |
| 66 | if (stack <= stacktop) | |
| 67 | stack0 = *stack++; | |
| 68 | if (stack <= stacktop) | |
| 69 | stack1 = *stack++; | |
| 70 | if (stack <= stacktop) | |
| 71 | stack2 = *stack++; | |
| 72 | if (stack <= stacktop) | |
| 73 | stack3 = *stack++; | |
| 74 | if (stack <= stacktop) | |
| 75 | stack4 = *stack++; | |
| 76 | ||
| 77 | dtrace_probe(sdt->sdp_id, stack0, stack1, stack2, stack3, stack4); | |
| 78 | ||
| 79 | return (DTRACE_INVOP_NOP); | |
| 80 | } | |
| 81 | } | |
| 82 | ||
| 83 | return (0); | |
| 84 | } | |
| b0d623f7 A |
85 | #elif defined(__x86_64__) |
| 86 | /*ARGSUSED*/ | |
| 87 | int | |
| 88 | sdt_invop(uintptr_t addr, uintptr_t *stack, uintptr_t eax) | |
| 89 | { | |
| 90 | #pragma unused(eax) | |
| 91 | sdt_probe_t *sdt = sdt_probetab[SDT_ADDR2NDX(addr)]; | |
| 92 | ||
| 93 | for (; sdt != NULL; sdt = sdt->sdp_hashnext) { | |
| 94 | if ((uintptr_t)sdt->sdp_patchpoint == addr) { | |
| 95 | x86_saved_state64_t *regs = (x86_saved_state64_t *)stack; | |
| 96 | ||
| 97 | dtrace_probe(sdt->sdp_id, regs->rdi, regs->rsi, regs->rdx, regs->rcx, regs->r8); | |
| 98 | ||
| 99 | return (DTRACE_INVOP_NOP); | |
| 100 | } | |
| 101 | } | |
| 102 | ||
| 103 | return (0); | |
| 104 | } | |
| 105 | #else | |
| 106 | #error Unknown arch | |
| 107 | #endif | |
| 108 | ||
| 2d21ac55 | 109 |