| | 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 | /* #pragma ident "@(#)sdt.c 1.9 08/07/01 SMI" */ |
| | 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 | |
| | 49 | #if defined(__i386__) |
| | 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 |
| | 64 | stacktop = (uintptr_t *)(dtrace_get_kernel_stack(current_thread()) + kernel_stack_size); |
| | 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 | } |
| | 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 | |
| | 109 | |
projects / apple / xnu.git / blame_incremental