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This patch implements parsing the .word

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directive for the Mips assembler.

Contributer: Vladimir Medic
 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173407 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jack Carter 2013-01-25 01:31:34 +00:00
parent d2047c6001
commit 801c583883
2 changed files with 46 additions and 8 deletions
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49
lib/Target/Mips/AsmParser/MipsAsmParser.cpp
View File

@ -133,6 +133,8 @@ class MipsAsmParser : public MCTargetAsmParser {
bool parseSetReorderDirective(); bool parseSetReorderDirective();
bool parseSetNoReorderDirective(); bool parseSetNoReorderDirective();
bool parseDirectiveWord(unsigned Size, SMLoc L);
MCSymbolRefExpr::VariantKind getVariantKind(StringRef Symbol); MCSymbolRefExpr::VariantKind getVariantKind(StringRef Symbol);
bool isMips64() const { bool isMips64() const {
@ -1451,51 +1453,84 @@ bool MipsAsmParser::parseDirectiveSet() {
Parser.EatToEndOfStatement(); Parser.EatToEndOfStatement();
return false; return false;
} }
return true; return true;
} }
/// parseDirectiveWord
/// ::= .word [ expression (, expression)* ]
bool MipsAsmParser::parseDirectiveWord(unsigned Size, SMLoc L) {
if (getLexer().isNot(AsmToken::EndOfStatement)) {
for (;;) {
const MCExpr *Value;
if (getParser().ParseExpression(Value))
return true;
getParser().getStreamer().EmitValue(Value, Size);
if (getLexer().is(AsmToken::EndOfStatement))
break;
// FIXME: Improve diagnostic.
if (getLexer().isNot(AsmToken::Comma))
return Error(L, "unexpected token in directive");
Parser.Lex();
}
}
Parser.Lex();
return false;
}
bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) { bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) {
if (DirectiveID.getString() == ".ent") { StringRef IDVal = DirectiveID.getString();
if ( IDVal == ".ent") {
// ignore this directive for now // ignore this directive for now
Parser.Lex(); Parser.Lex();
return false; return false;
} }
if (DirectiveID.getString() == ".end") { if (IDVal == ".end") {
// ignore this directive for now // ignore this directive for now
Parser.Lex(); Parser.Lex();
return false; return false;
} }
if (DirectiveID.getString() == ".frame") { if (IDVal == ".frame") {
// ignore this directive for now // ignore this directive for now
Parser.EatToEndOfStatement(); Parser.EatToEndOfStatement();
return false; return false;
} }
if (DirectiveID.getString() == ".set") { if (IDVal == ".set") {
return parseDirectiveSet(); return parseDirectiveSet();
} }
if (DirectiveID.getString() == ".fmask") { if (IDVal == ".fmask") {
// ignore this directive for now // ignore this directive for now
Parser.EatToEndOfStatement(); Parser.EatToEndOfStatement();
return false; return false;
} }
if (DirectiveID.getString() == ".mask") { if (IDVal == ".mask") {
// ignore this directive for now // ignore this directive for now
Parser.EatToEndOfStatement(); Parser.EatToEndOfStatement();
return false; return false;
} }
if (DirectiveID.getString() == ".gpword") { if (IDVal == ".gpword") {
// ignore this directive for now // ignore this directive for now
Parser.EatToEndOfStatement(); Parser.EatToEndOfStatement();
return false; return false;
} }
if (IDVal == ".word") {
parseDirectiveWord(4, DirectiveID.getLoc());
return false;
}
return true; return true;
} }

5
test/MC/Mips/mips_directives.s
View File

@ -1,4 +1,4 @@
# RUN: llvm-mc -triple mips-unknown-unknown %s # RUN: llvm-mc -triple mips-unknown-unknown %s | FileCheck %s
#this test produces no output so there isS no FileCheck call #this test produces no output so there isS no FileCheck call
$BB0_2: $BB0_2:
.ent directives_test .ent directives_test
@ -10,6 +10,9 @@ $BB0_2:
.set noat .set noat
$JTI0_0: $JTI0_0:
.gpword ($BB0_2) .gpword ($BB0_2)
.word 0x77fffffc
# CHECK: $JTI0_0:
# CHECK-NEXT: .4byte 2013265916
.set at=$12 .set at=$12
.set macro .set macro
.set reorder .set reorder