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libunwind: limit stack usage in unwind cursor

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This may be reworked upstream but in the interim should address the
stack usage issue reported in the PR.

PR:		206384
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Ed Maste 2016-07-09 00:35:20 +00:00
parent 15dbc1605b
commit c44b4795a9
2 changed files with 9 additions and 1 deletions
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8
contrib/llvm/projects/libunwind/include/__libunwind_config.h
View file

@ -22,30 +22,37 @@
# define _LIBUNWIND_TARGET_I386 1
# define _LIBUNWIND_CONTEXT_SIZE 8
# define _LIBUNWIND_CURSOR_SIZE 19
# define _LIBUNWIND_MAX_REGISTER 9
# elif defined(__x86_64__)
# define _LIBUNWIND_TARGET_X86_64 1
# define _LIBUNWIND_CONTEXT_SIZE 21
# define _LIBUNWIND_CURSOR_SIZE 33
# define _LIBUNWIND_MAX_REGISTER 17
# elif defined(__ppc__)
# define _LIBUNWIND_TARGET_PPC 1
# define _LIBUNWIND_CONTEXT_SIZE 117
# define _LIBUNWIND_CURSOR_SIZE 128
# define _LIBUNWIND_MAX_REGISTER 113
# elif defined(__aarch64__)
# define _LIBUNWIND_TARGET_AARCH64 1
# define _LIBUNWIND_CONTEXT_SIZE 66
# define _LIBUNWIND_CURSOR_SIZE 78
# define _LIBUNWIND_MAX_REGISTER 96
# elif defined(__arm__)
# define _LIBUNWIND_TARGET_ARM 1
# define _LIBUNWIND_CONTEXT_SIZE 60
# define _LIBUNWIND_CURSOR_SIZE 67
# define _LIBUNWIND_MAX_REGISTER 96
# elif defined(__or1k__)
# define _LIBUNWIND_TARGET_OR1K 1
# define _LIBUNWIND_CONTEXT_SIZE 16
# define _LIBUNWIND_CURSOR_SIZE 28
# define _LIBUNWIND_MAX_REGISTER 32
# elif defined(__riscv__)
# define _LIBUNWIND_TARGET_RISCV 1
# define _LIBUNWIND_CONTEXT_SIZE 128 /* XXX */
# define _LIBUNWIND_CURSOR_SIZE 140 /* XXX */
# define _LIBUNWIND_MAX_REGISTER 96
# else
# error "Unsupported architecture."
# endif
@ -58,6 +65,7 @@
# define _LIBUNWIND_TARGET_OR1K 1
# define _LIBUNWIND_CONTEXT_SIZE 128
# define _LIBUNWIND_CURSOR_SIZE 140
# define _LIBUNWIND_MAX_REGISTER 120
#endif // _LIBUNWIND_IS_NATIVE_ONLY
#endif // ____LIBUNWIND_CONFIG_H__

2
contrib/llvm/projects/libunwind/src/DwarfParser.hpp
View file

@ -62,7 +62,7 @@ public:
};
enum {
kMaxRegisterNumber = 120
kMaxRegisterNumber = _LIBUNWIND_MAX_REGISTER
};
enum RegisterSavedWhere {
kRegisterUnused,