Author: emaste
Date: Tue Aug 30 10:10:08 2016
New Revision: 280099
URL: http://llvm.org/viewvc/llvm-project?rev=280099&view=rev
Log:
libunwind: fix X86 register numbers for FreeBSD/i386
For historical reasons i386 has ebp and esp swapped in the eh_frame
register numbering on at least Darwin. That is:
Darwin FreeBSD
Reg # eh_frame eh_frame DWARF
===== ======== ======== =====
4 ebp esp esp
5 esp ebp ebp
Although the UNW_X86_* constants are not intended to be coupled with
DWARF / eh_frame numbering they are currently conflated in libunwind.
Differential Revision: https://reviews.llvm.org/D22508
Modified:
libunwind/trunk/include/libunwind.h
Modified: libunwind/trunk/include/libunwind.h
URL:
http://llvm.org/viewvc/llvm-project/libunwind/trunk/include/libunwind.h?rev=280099&r1=280098&r2=280099&view=diff
==============================================================================
--- libunwind/trunk/include/libunwind.h (original)
+++ libunwind/trunk/include/libunwind.h Tue Aug 30 10:10:08 2016
@@ -151,8 +151,13 @@ enum {
UNW_X86_ECX = 1,
UNW_X86_EDX = 2,
UNW_X86_EBX = 3,
+#ifdef __FreeBSD__
+ UNW_X86_ESP = 4,
+ UNW_X86_EBP = 5,
+#else
UNW_X86_EBP = 4,
UNW_X86_ESP = 5,
+#endif
UNW_X86_ESI = 6,
UNW_X86_EDI = 7
};
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