85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*
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* Copyright (c) 2013-2015 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#include "trace_internal.h"
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#include <mach-o/loader.h>
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#include <string.h>
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static bool
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_os_trace_addr_in_text_segment_32(const void *dso, const void *addr)
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{
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const struct mach_header *mhp = (const struct mach_header *) dso;
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const struct segment_command *sgp = (const struct segment_command *)(const void *)((const char *)mhp + sizeof(struct mach_header));
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for (uint32_t i = 0; i < mhp->ncmds; i++) {
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if (sgp->cmd == LC_SEGMENT) {
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if (strncmp(sgp->segname, SEG_TEXT, sizeof(sgp->segname)) == 0) {
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return (uintptr_t)addr >= (sgp->vmaddr) && (uintptr_t)addr < (sgp->vmaddr + sgp->vmsize);
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}
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}
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sgp = (const struct segment_command *)(const void *)((const char *)sgp + sgp->cmdsize);
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}
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return false;
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}
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static bool
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_os_trace_addr_in_text_segment_64(const void *dso, const void *addr)
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{
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const struct mach_header_64 *mhp = (const struct mach_header_64 *) dso;
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const struct segment_command_64 *sgp = (const struct segment_command_64 *)(const void *)((const char *)mhp + sizeof(struct mach_header_64));
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for (uint32_t i = 0; i < mhp->ncmds; i++) {
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if (sgp->cmd == LC_SEGMENT_64) {
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if (strncmp(sgp->segname, SEG_TEXT, sizeof(sgp->segname)) == 0) {
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return (uintptr_t)addr >= (sgp->vmaddr) && (uintptr_t)addr < (sgp->vmaddr + sgp->vmsize);
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}
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}
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sgp = (const struct segment_command_64 *)(const void *)((const char *)sgp + sgp->cmdsize);
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}
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return false;
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}
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bool
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_os_trace_addr_in_text_segment(const void *dso, const void *addr)
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{
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const struct mach_header *mhp = (const struct mach_header *) dso;
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bool retval = false;
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switch (mhp->magic) {
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case MH_MAGIC:
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retval = _os_trace_addr_in_text_segment_32(dso, addr);
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break;
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case MH_MAGIC_64:
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retval = _os_trace_addr_in_text_segment_64(dso, addr);
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break;
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default:
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retval = false;
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break;
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}
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return retval;
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}
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