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Side by Side Diff: third_party/crashpad/crashpad/third_party/apple_cctools/README.crashpad

Issue 2555353002: Update Crashpad to 32981a3ee9d7c2769fb27afa038fe2e194cfa329 (Closed)
Patch Set: fix readme Created 4 years ago
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1 Name: Apple cctools 1 Name: Apple cctools
2 Short Name: cctools 2 Short Name: cctools
3 URL: https://opensource.apple.com/source/cctools/ 3 URL: https://opensource.apple.com/source/cctools/
4 URL: https://opensource.apple.com/tarballs/cctools/ 4 URL: https://opensource.apple.com/tarballs/cctools/
5 Version: 855 (from Xcode 5.1) 5 Version: 855 (from Xcode 5.1)
6 License: APSL 2.0 6 License: APSL 2.0
7 License File: cctools/APPLE_LICENSE 7 License File: cctools/APPLE_LICENSE
8 Security Critical: no 8 Security Critical: no
9 9
10 Description: 10 Description:
11 cctools contains portions of Apple’s compiler toolchain, including common tools 11 cctools contains portions of Apple’s compiler toolchain, including common tools
12 like ar, as, nm, strings, and strip, and platform-specific tools like lipo and 12 like ar, as, nm, strings, and strip, and platform-specific tools like lipo and
13 otool. It also contains support libraries such as libmacho, which contains 13 otool. It also contains support libraries such as libmacho, which contains
14 interfaces for dealing with Mach-O images. 14 interfaces for dealing with Mach-O images.
15 15
16 libmacho is available on Mac OS X as a runtime library that is part of 16 libmacho is available on macOS as a runtime library that is part of libSystem,
17 libSystem, but versions of libmacho included in operating system versions prior 17 but versions of libmacho included in operating system versions prior to Mac OS X
18 to Mac OS X 10.7 did not include the getsectiondata() and getsegmentdata() 18 10.7 did not include the getsectiondata() and getsegmentdata() functions. This
19 functions. This library is present here to provide implementations of these 19 library is present here to provide implementations of these functions for
20 functions for systems that do not have them. 20 systems that do not have them.
21 21
22 Crashpad code is not expected to use this library directly. It should use the 22 Crashpad code is not expected to use this library directly. It should use the
23 getsectiondata() and getsegmentdata() wrappers in compat, which will use 23 getsectiondata() and getsegmentdata() wrappers in compat, which will use
24 system-provided implementations if present at runtime, and will otherwise fall 24 system-provided implementations if present at runtime, and will otherwise fall
25 back to the implementations in this library. 25 back to the implementations in this library.
26 26
27 Local Modifications: 27 Local Modifications:
28 - Only cctools/APPLE_LICENSE, cctools/libmacho/getsecbyname.c, and 28 - Only cctools/APPLE_LICENSE, cctools/libmacho/getsecbyname.c, and
29 cctools/include/mach-o/getsect.h are included. 29 cctools/include/mach-o/getsect.h are included.
30 - getsecbyname.c and getsect.h have been trimmed to remove everything other 30 - getsecbyname.c and getsect.h have been trimmed to remove everything other
31 than the getsectiondata() and getsegmentdata() functions. The #include guards 31 than the getsectiondata() and getsegmentdata() functions. The #include guards
32 in getsect.h have been made unique. 32 in getsect.h have been made unique.
33 - getsectiondata() is renamed to crashpad_getsectiondata(), and 33 - getsectiondata() is renamed to crashpad_getsectiondata(), and
34 getsegmentdata() is renamed to crashpad_getsegmentdata(). 34 getsegmentdata() is renamed to crashpad_getsegmentdata().
35 - These functions are only declared and defined if the deployment target is 35 - These functions are only declared and defined if the deployment target is
36 older than 10.7. This library is not needed otherwise, because in that case, 36 older than 10.7. This library is not needed otherwise, because in that case,
37 the system always provides implementations in runtime libraries. 37 the system always provides implementations in runtime libraries.
38 - Originally, each of these two functions were implemented twice: once for 38 - Originally, each of these two functions were implemented twice: once for
39 32-bit code and once for 64-bit code. Aside from the types and constants 39 32-bit code and once for 64-bit code. Aside from the types and constants
40 used, the two implementations were completely identical. This has been 40 used, the two implementations were completely identical. This has been
41 simplified to have a shared implementation that relies on local typedefs and 41 simplified to have a shared implementation that relies on local typedefs and
42 constants being defined properly. This change was only made in 42 constants being defined properly. This change was only made in
43 getsecbyname.c. getsect.h was not changed to avoid leaking new definitions 43 getsecbyname.c. getsect.h was not changed to avoid leaking new definitions
44 beyond this header. 44 beyond this header.
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