Add support for .cfi_register now that it is easy to extent the representation
to support it. Original patch with the parsing and plumbing by the PaX team and
Roman Divacky. I added the bits in MCDwarf.cpp and the test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168565 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 34ebe3b..106dd53 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -398,6 +398,8 @@
&GenericAsmParser::ParseDirectiveCFISignalFrame>(".cfi_signal_frame");
AddDirectiveHandler<
&GenericAsmParser::ParseDirectiveCFIUndefined>(".cfi_undefined");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRegister>(".cfi_register");
// Macro directives.
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
@@ -436,6 +438,7 @@
bool ParseDirectiveCFIEscape(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFISignalFrame(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIUndefined(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRegister(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacrosOnOff(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacro(StringRef, SMLoc DirectiveLoc);
@@ -3263,6 +3266,29 @@
return false;
}
+/// ParseDirectiveCFIRegister
+/// ::= .cfi_register register, register
+bool GenericAsmParser::ParseDirectiveCFIRegister(StringRef Directive,
+ SMLoc DirectiveLoc) {
+ int64_t Register1 = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register1, DirectiveLoc))
+ return true;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ int64_t Register2 = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register2, DirectiveLoc))
+ return true;
+
+ getStreamer().EmitCFIRegister(Register1, Register2);
+
+ return false;
+}
+
/// ParseDirectiveMacrosOnOff
/// ::= .macros_on
/// ::= .macros_off