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Implement .cfi_escape. Patch by Brian Anderson!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147352 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2011-12-29 20:24:47 +00:00
parent 19f18be449
commit 6f0b181bc7
6 changed files with 92 additions and 1 deletions
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27
lib/MC/MCParser/AsmParser.cpp
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@@ -301,6 +301,8 @@ public:
&GenericAsmParser::ParseDirectiveCFIRestoreState>(".cfi_restore_state");
AddDirectiveHandler<
&GenericAsmParser::ParseDirectiveCFISameValue>(".cfi_same_value");
AddDirectiveHandler<
&GenericAsmParser::ParseDirectiveCFIEscape>(".cfi_escape");
// Macro directives.
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
@@ -334,6 +336,7 @@ public:
bool ParseDirectiveCFIRememberState(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIRestoreState(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFISameValue(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIEscape(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacrosOnOff(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacro(StringRef, SMLoc DirectiveLoc);
@@ -2812,6 +2815,30 @@ bool GenericAsmParser::ParseDirectiveCFISameValue(StringRef IDVal,
return false;
}
/// ParseDirectiveCFIEscape
/// ::= .cfi_escape expression[,...]
bool GenericAsmParser::ParseDirectiveCFIEscape(StringRef IDVal,
SMLoc DirectiveLoc) {
std::string Values;
int64_t CurrValue;
if (getParser().ParseAbsoluteExpression(CurrValue))
return true;
Values.push_back((uint8_t)CurrValue);
while (getLexer().is(AsmToken::Comma)) {
Lex();
if (getParser().ParseAbsoluteExpression(CurrValue))
return true;
Values.push_back((uint8_t)CurrValue);
}
getStreamer().EmitCFIEscape(Values);
return false;
}
/// ParseDirectiveMacrosOnOff
/// ::= .macros_on
/// ::= .macros_off