[PATCH] Make the unwinder build on thumbv6-m with the integrated assembler.
Jonathan Roelofs
jonathan at codesourcery.com
Fri Feb 13 15:42:53 PST 2015
Hi compnerd,
Integrated AS likes UAL, and can't handle pre-UAL garbage like thumb1 'mov r0, #0'.
http://reviews.llvm.org/D7630
Files:
UnwindRegistersSave.S
Index: UnwindRegistersSave.S
===================================================================
--- UnwindRegistersSave.S
+++ UnwindRegistersSave.S
@@ -307,16 +307,17 @@
str r2, [r0, #52]
str r3, [r0, #56]
str r3, [r0, #60] @ store return address as pc
+ movs r0, #0 @ return UNW_ESUCCESS
#else
@ 32bit thumb-2 restrictions for stm:
@ . the sp (r13) cannot be in the list
@ . the pc (r15) cannot be in the list in an STM instruction
stm r0, {r0-r12}
str sp, [r0, #52]
str lr, [r0, #56]
str lr, [r0, #60] @ store return address as pc
-#endif
mov r0, #0 @ return UNW_ESUCCESS
+#endif
JMP(lr)
@
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