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Add support for a fill value in the .zero directive. 

llvm-svn: 115655
This commit is contained in:
Rafael Espindola 2010-10-05 19:42:57 +00:00
parent 1d4cc2f06c
commit b91bac6c96
2 changed files with 11 additions and 3 deletions
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9
llvm/lib/MC/MCParser/AsmParser.cpp
View File

@ -1498,12 +1498,19 @@ bool AsmParser::ParseDirectiveZero() {
if (ParseAbsoluteExpression(NumBytes))
return true;
int64_t Val = 0;
if (getLexer().is(AsmToken::Comma)) {
Lex();
if (ParseAbsoluteExpression(Val))
return true;
}
if (getLexer().isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in '.zero' directive");
Lex();
getStreamer().EmitFill(NumBytes, 0, DEFAULT_ADDRSPACE);
getStreamer().EmitFill(NumBytes, Val, DEFAULT_ADDRSPACE);
return false;
}

5
llvm/test/MC/ELF/zero.s
View File

@ -1,15 +1,16 @@
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump --dump-section-data | FileCheck %s
.zero 4
.zero 1,42
// CHECK: ('sh_name', 1) # '.text'
// CHECK: ('sh_type', 1)
// CHECK: ('sh_flags', 6)
// CHECK: ('sh_addr', 0)
// CHECK: ('sh_offset', 64)
// CHECK: ('sh_size', 4)
// CHECK: ('sh_size', 5)
// CHECK: ('sh_link', 0)
// CHECK: ('sh_info', 0)
// CHECK: ('sh_addralign', 4)
// CHECK: ('sh_entsize', 0)
// CHECK: ('_section_data', '00000000')
// CHECK: ('_section_data', '00000000 2a')