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[AsmParser] Support GAS's .print directive

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Differential Revision: https://reviews.llvm.org/D38448

llvm-svn: 314674
This commit is contained in:
Coby Tayree 2017-10-02 14:36:31 +00:00
parent 8182f649b2
commit a794bbd4af
2 changed files with 36 additions and 0 deletions
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18
lib/MC/MCParser/AsmParser.cpp
View File

@ -538,6 +538,7 @@ private:
DK_ERR,
DK_ERROR,
DK_WARNING,
DK_PRINT,
DK_END
};
@ -682,6 +683,9 @@ private:
// ".warning"
bool parseDirectiveWarning(SMLoc DirectiveLoc);
// .print <double-quotes-string>
bool parseDirectivePrint(SMLoc DirectiveLoc);
void initializeDirectiveKindMap();
};
@ -2130,6 +2134,8 @@ bool AsmParser::parseStatement(ParseStatementInfo &Info,
case DK_DS_P:
case DK_DS_X:
return parseDirectiveDS(IDVal, 12);
case DK_PRINT:
return parseDirectivePrint(IDLoc);
}
return Error(IDLoc, "unknown directive");
@ -5228,6 +5234,7 @@ void AsmParser::initializeDirectiveKindMap() {
DirectiveKindMap[".ds.s"] = DK_DS_S;
DirectiveKindMap[".ds.w"] = DK_DS_W;
DirectiveKindMap[".ds.x"] = DK_DS_X;
DirectiveKindMap[".print"] = DK_PRINT;
}
MCAsmMacro *AsmParser::parseMacroLikeBody(SMLoc DirectiveLoc) {
@ -5456,6 +5463,17 @@ bool AsmParser::parseDirectiveMSAlign(SMLoc IDLoc, ParseStatementInfo &Info) {
return false;
}
bool AsmParser::parseDirectivePrint(SMLoc DirectiveLoc) {
const AsmToken StrTok = getTok();
Lex();
if (StrTok.isNot(AsmToken::String) || StrTok.getString().front() != '"')
return Error(DirectiveLoc, "expected double quoted string after .print");
if (parseToken(AsmToken::EndOfStatement, "expected end of statement"))
return true;
llvm::outs() << StrTok.getStringContents() << '\n';
return false;
}
// We are comparing pointers, but the pointers are relative to a single string.
// Thus, this should always be deterministic.
static int rewritesSort(const AsmRewrite *AsmRewriteA,

18
test/MC/AsmParser/directive_print.s Normal file
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@ -0,0 +1,18 @@
# RUN: not llvm-mc -triple i386-linux-gnu %s 2> %t.err | FileCheck %s
# RUN: FileCheck < %t.err %s --check-prefix=CHECK-ERR
T1:
# CHECK: e
# CHECK: 2.718281828459045235
.print "e"
.print "2.718281828459045235"
T2:
# CHECK-ERR: expected double quoted string after .print
.altmacro
.print <pi>
.noaltmacro
T3:
# CHECK-ERR: expected end of statement
.print "a" "misplaced-string"