10.6 SDK compatibility

compat/mac/mach-o/getsect.h

+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef CRASHPAD_COMPAT_MAC_MACH_O_GETSECT_H_
+#define CRASHPAD_COMPAT_MAC_MACH_O_GETSECT_H_
+
+#include_next <mach-o/getsect.h>
+
+#include <AvailabilityMacros.h>
+
+// This file checks the SDK instead of the deployment target. The SDK is correct
+// because this file is concerned with providing compile-time declarations,
+// which are either present in a specific SDK version or not.
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
+
+#include <mach-o/loader.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Don’t use a typedef to account for the mach_header/mach_header_64 difference
+// between the 32-bit and 64-bit versions of getsectiondata() and
+// getsegmentdata(). This file should be faithfully equivalent to the native
+// SDK, and adding typedefs here would pollute the namespace in a way that the
+// native SDK does not.
+
+#if !defined(__LP64__)
+
+uint8_t* getsectiondata(const struct mach_header* mhp,
+                        const char* segname,
+                        const char* sectname,
+                        unsigned long* size);
+
+uint8_t* getsegmentdata(
+    const struct mach_header* mhp, const char* segname, unsigned long* size);
+
+#else
+
+uint8_t* getsectiondata(const struct mach_header_64* mhp,
+                        const char* segname,
+                        const char* sectname,
+                        unsigned long* size);
+
+uint8_t* getsegmentdata(
+    const struct mach_header_64* mhp, const char* segname, unsigned long* size);
+
+#endif
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
+
+#endif  // CRASHPAD_COMPAT_MAC_MACH_O_GETSECT_H_