Author: jroelofs
Date: Fri Feb 13 19:38:35 2015
New Revision: 229207
URL: http://llvm.org/viewvc/llvm-project?rev=229207&view=rev
Log:
Address post-commit review comments
Modified:
libcxxabi/trunk/src/Unwind/UnwindRegistersSave.S
Modified: libcxxabi/trunk/src/Unwind/UnwindRegistersSave.S
URL:
http://llvm.org/viewvc/llvm-project/libcxxabi/trunk/src/Unwind/UnwindRegistersSave.S?rev=229207&r1=229206&r2=229207&view=diff
==============================================================================
--- libcxxabi/trunk/src/Unwind/UnwindRegistersSave.S (original)
+++ libcxxabi/trunk/src/Unwind/UnwindRegistersSave.S Fri Feb 13 19:38:35 2015
@@ -317,6 +317,9 @@ DEFINE_LIBUNWIND_FUNCTION(unw_getcontext
str lr, [r0, #60] @ store return address as pc
#endif
#if __ARM_ARCH_ISA_THUMB1 == 1
+ @ T1 does not have a non-cpsr-clobbering register-zeroing instruction.
+ @ It is safe to use here though because we are about to return, and cpsr is
+ @ not expected to be preserved.
movs r0, #0 @ return UNW_ESUCCESS
#else
mov r0, #0 @ return UNW_ESUCCESS
_______________________________________________
cfe-commits mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
