Author: emaste
Date: Tue Jul 19 00:47:00 2016
New Revision: 303016
URL: https://svnweb.freebsd.org/changeset/base/303016
Log:
llvm-libunwind: use conventional (non-Darwin) X86 register numbers
For historical reasons Darwin/i386 has ebp and esp swapped in the
eh_frame register numbering. That is:
Darwin Other
Reg # eh_frame eh_frame DWARF
===== ======== ======== =====
4 ebp esp esp
5 esp ebp ebp
Although the UNW_X86_* constants are not supposed to be coupled to
DWARF / eh_frame numbering they are currently conflated in LLVM
libunwind, and thus we require the non-Darwin numbering.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Modified:
head/contrib/llvm/projects/libunwind/include/libunwind.h
Modified: head/contrib/llvm/projects/libunwind/include/libunwind.h
==============================================================================
--- head/contrib/llvm/projects/libunwind/include/libunwind.h Tue Jul 19
00:27:17 2016 (r303015)
+++ head/contrib/llvm/projects/libunwind/include/libunwind.h Tue Jul 19
00:47:00 2016 (r303016)
@@ -151,8 +151,8 @@ enum {
UNW_X86_ECX = 1,
UNW_X86_EDX = 2,
UNW_X86_EBX = 3,
- UNW_X86_EBP = 4,
- UNW_X86_ESP = 5,
+ UNW_X86_ESP = 4,
+ UNW_X86_EBP = 5,
UNW_X86_ESI = 6,
UNW_X86_EDI = 7
};
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