For MIPS, we have to encode the personality routine with
an indirect pointer to absptr; otherwise, some link warning
warning will be raised, and the program might crash in some
early MIPS Android device.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209907
91177308-0d34-0410-b5e6-
96231b3b80d8
unsigned PerEncoding = TLOF.getPersonalityEncoding();
- if ((PerEncoding & 0x70) != dwarf::DW_EH_PE_pcrel)
+ if ((PerEncoding & 0x80) != dwarf::DW_EH_PE_indirect)
return;
// Emit references to all used personality functions
const GlobalValue *GV, Mangler &Mang, const TargetMachine &TM,
MachineModuleInfo *MMI) const {
unsigned Encoding = getPersonalityEncoding();
- switch (Encoding & 0x70) {
- default:
- report_fatal_error("We do not support this DWARF encoding yet!");
- case dwarf::DW_EH_PE_absptr:
- return TM.getSymbol(GV, Mang);
- case dwarf::DW_EH_PE_pcrel: {
+ if ((Encoding & 0x80) == dwarf::DW_EH_PE_indirect)
return getContext().GetOrCreateSymbol(StringRef("DW.ref.") +
TM.getSymbol(GV, Mang)->getName());
- }
- }
+ if ((Encoding & 0x70) == dwarf::DW_EH_PE_absptr)
+ return TM.getSymbol(GV, Mang);
+ report_fatal_error("We do not support this DWARF encoding yet!");
}
void TargetLoweringObjectFileELF::emitPersonalityValue(MCStreamer &Streamer,
TTypeEncoding = dwarf::DW_EH_PE_absptr;
}
break;
+ case Triple::mips:
+ case Triple::mipsel:
+ // MIPS uses indirect pointer to refer personality functions, so that the
+ // eh_frame section can be read-only. DW.ref.personality will be generated
+ // for relocation.
+ PersonalityEncoding = dwarf::DW_EH_PE_indirect;
+ break;
case Triple::ppc64:
case Triple::ppc64le:
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
--- /dev/null
+; RUN: llc -mtriple=mipsel-linux-gnu < %s | FileCheck %s
+; RUN: llc -mtriple=mipsel-linux-android < %s | FileCheck %s
+
+define i32 @main() {
+; CHECK: .cfi_startproc
+; CHECK: .cfi_personality 128, DW.ref.__gxx_personality_v0
+
+entry:
+ invoke void @foo() to label %cont unwind label %lpad
+; CHECK: foo
+; CHECK: jalr
+
+lpad:
+ %0 = landingpad { i8*, i32 } personality i8*
+ bitcast (i32 (...)* @__gxx_personality_v0 to i8*) catch i8* null
+ ret i32 0
+
+cont:
+ ret i32 0
+}
+; CHECK: .cfi_endproc
+
+declare i32 @__gxx_personality_v0(...)
+
+declare void @foo()
+
+; CHECK: .hidden DW.ref.__gxx_personality_v0
+; CHECK: .weak DW.ref.__gxx_personality_v0
+; CHECK: .section .data.DW.ref.__gxx_personality_v0,"aGw",@progbits,DW.ref.__gxx_personality_v0,comdat
+; CHECK: .align 2
+; CHECK: .type DW.ref.__gxx_personality_v0,@object
+; CHECK: .size DW.ref.__gxx_personality_v0, 4
+; CHECK: DW.ref.__gxx_personality_v0:
+; CHECK: .4byte __gxx_personality_v0