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Add support for .ident.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117389 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-10-26 19:35:47 +00:00
parent 0eb7d06ab1
commit 61e3b91da7
2 changed files with 49 additions and 0 deletions
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32
lib/MC/MCParser/ELFAsmParser.cpp
View File

@ -50,6 +50,7 @@ public:
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveSize>(".size"); AddDirectiveHandler<&ELFAsmParser::ParseDirectiveSize>(".size");
AddDirectiveHandler<&ELFAsmParser::ParseDirectivePrevious>(".previous"); AddDirectiveHandler<&ELFAsmParser::ParseDirectivePrevious>(".previous");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveType>(".type"); AddDirectiveHandler<&ELFAsmParser::ParseDirectiveType>(".type");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveIdent>(".ident");
} }
// FIXME: Part of this logic is duplicated in the MCELFStreamer. What is // FIXME: Part of this logic is duplicated in the MCELFStreamer. What is
@ -114,6 +115,7 @@ public:
bool ParseDirectiveSize(StringRef, SMLoc); bool ParseDirectiveSize(StringRef, SMLoc);
bool ParseDirectivePrevious(StringRef, SMLoc); bool ParseDirectivePrevious(StringRef, SMLoc);
bool ParseDirectiveType(StringRef, SMLoc); bool ParseDirectiveType(StringRef, SMLoc);
bool ParseDirectiveIdent(StringRef, SMLoc);
private: private:
bool ParseSectionName(StringRef &SectionName); bool ParseSectionName(StringRef &SectionName);
@ -345,6 +347,36 @@ bool ELFAsmParser::ParseDirectiveType(StringRef, SMLoc) {
return false; return false;
} }
/// ParseDirectiveIdent
/// ::= .ident string
bool ELFAsmParser::ParseDirectiveIdent(StringRef, SMLoc) {
if (getLexer().isNot(AsmToken::String))
return TokError("unexpected token in '.ident' directive");
StringRef Data = getTok().getIdentifier();
Lex();
const MCSection *OldSection = getStreamer().getCurrentSection();
const MCSection *Comment =
getContext().getELFSection(".comment", MCSectionELF::SHT_PROGBITS,
MCSectionELF::SHF_MERGE |
MCSectionELF::SHF_STRINGS,
SectionKind::getReadOnly(),
false, 1);
static bool First = true;
getStreamer().SwitchSection(Comment);
if (First)
getStreamer().EmitIntValue(0, 1);
First = false;
getStreamer().EmitBytes(Data, 0);
getStreamer().EmitIntValue(0, 1);
getStreamer().SwitchSection(OldSection);
return false;
}
namespace llvm { namespace llvm {
MCAsmParserExtension *createELFAsmParser() { MCAsmParserExtension *createELFAsmParser() {

17
test/MC/ELF/ident.s Normal file
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@ -0,0 +1,17 @@
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump --dump-section-data | FileCheck %s
// CHECK: (('sh_name', 0x00000012) # '.comment'
// CHECK-NEXT: ('sh_type', 0x00000001)
// CHECK-NEXT: ('sh_flags', 0x00000030)
// CHECK-NEXT: ('sh_addr', 0x00000000)
// CHECK-NEXT: ('sh_offset', 0x00000040)
// CHECK-NEXT: ('sh_size', 0x0000000d)
// CHECK-NEXT: ('sh_link', 0x00000000)
// CHECK-NEXT: ('sh_info', 0x00000000)
// CHECK-NEXT: ('sh_addralign', 0x00000001)
// CHECK-NEXT: ('sh_entsize', 0x00000001)
// CHECK-NEXT: ('_section_data', '00666f6f 00626172 007a6564 00')
.ident "foo"
.ident "bar"
.ident "zed"