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Fix #13138, a bug around ARM instruction DSB encoding and decoding issue.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161161 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jiangning Liu 2012-08-02 08:21:27 +00:00
parent 1fb27eccf5
commit c1b7ca5ba2
7 changed files with 310 additions and 73 deletions
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70
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
View File

@ -3279,29 +3279,59 @@ ARMAsmParser::OperandMatchResultTy ARMAsmParser::
parseMemBarrierOptOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
SMLoc S = Parser.getTok().getLoc();
const AsmToken &Tok = Parser.getTok();
if (!Tok.is(AsmToken::Identifier))
return MatchOperand_NoMatch;
StringRef OptStr = Tok.getString();
unsigned Opt;
unsigned Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower())
.Case("sy", ARM_MB::SY)
.Case("st", ARM_MB::ST)
.Case("sh", ARM_MB::ISH)
.Case("ish", ARM_MB::ISH)
.Case("shst", ARM_MB::ISHST)
.Case("ishst", ARM_MB::ISHST)
.Case("nsh", ARM_MB::NSH)
.Case("un", ARM_MB::NSH)
.Case("nshst", ARM_MB::NSHST)
.Case("unst", ARM_MB::NSHST)
.Case("osh", ARM_MB::OSH)
.Case("oshst", ARM_MB::OSHST)
.Default(~0U);
if (Tok.is(AsmToken::Identifier)) {
StringRef OptStr = Tok.getString();
if (Opt == ~0U)
return MatchOperand_NoMatch;
Opt = StringSwitch<unsigned>(OptStr.slice(0, OptStr.size()).lower())
.Case("sy", ARM_MB::SY)
.Case("st", ARM_MB::ST)
.Case("sh", ARM_MB::ISH)
.Case("ish", ARM_MB::ISH)
.Case("shst", ARM_MB::ISHST)
.Case("ishst", ARM_MB::ISHST)
.Case("nsh", ARM_MB::NSH)
.Case("un", ARM_MB::NSH)
.Case("nshst", ARM_MB::NSHST)
.Case("unst", ARM_MB::NSHST)
.Case("osh", ARM_MB::OSH)
.Case("oshst", ARM_MB::OSHST)
.Default(~0U);
if (Opt == ~0U)
return MatchOperand_NoMatch;
Parser.Lex(); // Eat identifier token.
} else if (Tok.is(AsmToken::Hash) ||
Tok.is(AsmToken::Dollar) ||
Tok.is(AsmToken::Integer)) {
if (Parser.getTok().isNot(AsmToken::Integer))
Parser.Lex(); // Eat the '#'.
SMLoc Loc = Parser.getTok().getLoc();
const MCExpr *MemBarrierID;
if (getParser().ParseExpression(MemBarrierID)) {
Error(Loc, "illegal expression");
return MatchOperand_ParseFail;
}
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(MemBarrierID);
if (!CE) {
Error(Loc, "constant expression expected");
return MatchOperand_ParseFail;
}
int Val = CE->getValue();
if (Val & ~0xf) {
Error(Loc, "immediate value out of range");
return MatchOperand_ParseFail;
}
Opt = ARM_MB::RESERVED_0 + Val;
} else
return MatchOperand_ParseFail;
Parser.Lex(); // Eat identifier token.
Operands.push_back(ARMOperand::CreateMemBarrierOpt((ARM_MB::MemBOpt)Opt, S));
return MatchOperand_Success;
}

13
lib/Target/ARM/Disassembler/ARMDisassembler.cpp
View File

@ -3494,19 +3494,8 @@ static DecodeStatus DecodeThumbBLTargetOperand(MCInst &Inst, unsigned Val,
static DecodeStatus DecodeMemBarrierOption(MCInst &Inst, unsigned Val,
uint64_t Address, const void *Decoder) {
switch (Val) {
default:
if (Val & ~0xf)
return MCDisassembler::Fail;
case 0xF: // SY
case 0xE: // ST
case 0xB: // ISH
case 0xA: // ISHST
case 0x7: // NSH
case 0x6: // NSHST
case 0x3: // OSH
case 0x2: // OSHST
break;
}
Inst.addOperand(MCOperand::CreateImm(Val));
return MCDisassembler::Success;

30
lib/Target/ARM/MCTargetDesc/ARMBaseInfo.h
View File

@ -120,14 +120,22 @@ namespace ARM_MB {
// The Memory Barrier Option constants map directly to the 4-bit encoding of
// the option field for memory barrier operations.
enum MemBOpt {
SY = 15,
ST = 14,
ISH = 11,
ISHST = 10,
NSH = 7,
NSHST = 6,
RESERVED_0 = 0,
RESERVED_1 = 1,
OSHST = 2,
OSH = 3,
OSHST = 2
RESERVED_4 = 4,
RESERVED_5 = 5,
NSHST = 6,
NSH = 7,
RESERVED_8 = 8,
RESERVED_9 = 9,
ISHST = 10,
ISH = 11,
RESERVED_12 = 12,
RESERVED_13 = 13,
ST = 14,
SY = 15
};
inline static const char *MemBOptToString(unsigned val) {
@ -135,12 +143,20 @@ namespace ARM_MB {
default: llvm_unreachable("Unknown memory operation");
case SY: return "sy";
case ST: return "st";
case RESERVED_13: return "#0xd";
case RESERVED_12: return "#0xc";
case ISH: return "ish";
case ISHST: return "ishst";
case RESERVED_9: return "#0x9";
case RESERVED_8: return "#0x8";
case NSH: return "nsh";
case NSHST: return "nshst";
case RESERVED_5: return "#0x5";
case RESERVED_4: return "#0x4";
case OSH: return "osh";
case OSHST: return "oshst";
case RESERVED_1: return "#0x1";
case RESERVED_0: return "#0x0";
}
}
} // namespace ARM_MB

74
test/MC/ARM/basic-arm-instructions.s
View File

@ -567,6 +567,23 @@ Lforward:
@------------------------------------------------------------------------------
@ DMB
@------------------------------------------------------------------------------
dmb #0xf
dmb #0xe
dmb #0xd
dmb #0xc
dmb #0xb
dmb #0xa
dmb #0x9
dmb #0x8
dmb #0x7
dmb #0x6
dmb #0x5
dmb #0x4
dmb #0x3
dmb #0x2
dmb #0x1
dmb #0x0
dmb sy
dmb st
dmb sh
@ -581,6 +598,23 @@ Lforward:
dmb oshst
dmb
@ CHECK: dmb sy @ encoding: [0x5f,0xf0,0x7f,0xf5]
@ CHECK: dmb st @ encoding: [0x5e,0xf0,0x7f,0xf5]
@ CHECK: dmb #0xd @ encoding: [0x5d,0xf0,0x7f,0xf5]
@ CHECK: dmb #0xc @ encoding: [0x5c,0xf0,0x7f,0xf5]
@ CHECK: dmb ish @ encoding: [0x5b,0xf0,0x7f,0xf5]
@ CHECK: dmb ishst @ encoding: [0x5a,0xf0,0x7f,0xf5]
@ CHECK: dmb #0x9 @ encoding: [0x59,0xf0,0x7f,0xf5]
@ CHECK: dmb #0x8 @ encoding: [0x58,0xf0,0x7f,0xf5]
@ CHECK: dmb nsh @ encoding: [0x57,0xf0,0x7f,0xf5]
@ CHECK: dmb nshst @ encoding: [0x56,0xf0,0x7f,0xf5]
@ CHECK: dmb #0x5 @ encoding: [0x55,0xf0,0x7f,0xf5]
@ CHECK: dmb #0x4 @ encoding: [0x54,0xf0,0x7f,0xf5]
@ CHECK: dmb osh @ encoding: [0x53,0xf0,0x7f,0xf5]
@ CHECK: dmb oshst @ encoding: [0x52,0xf0,0x7f,0xf5]
@ CHECK: dmb #0x1 @ encoding: [0x51,0xf0,0x7f,0xf5]
@ CHECK: dmb #0x0 @ encoding: [0x50,0xf0,0x7f,0xf5]
@ CHECK: dmb sy @ encoding: [0x5f,0xf0,0x7f,0xf5]
@ CHECK: dmb st @ encoding: [0x5e,0xf0,0x7f,0xf5]
@ CHECK: dmb ish @ encoding: [0x5b,0xf0,0x7f,0xf5]
@ -598,6 +632,26 @@ Lforward:
@------------------------------------------------------------------------------
@ DSB
@------------------------------------------------------------------------------
dsb #0xf
dsb #0xe
dsb #0xd
dsb #0xc
dsb #0xb
dsb #0xa
dsb #0x9
dsb #0x8
dsb #0x7
dsb #0x6
dsb #0x5
dsb #0x4
dsb #0x3
dsb #0x2
dsb #0x1
dsb #0x0
dsb 8
dsb 7
dsb sy
dsb st
dsb sh
@ -612,6 +666,26 @@ Lforward:
dsb oshst
dsb
@ CHECK: dsb sy @ encoding: [0x4f,0xf0,0x7f,0xf5]
@ CHECK: dsb st @ encoding: [0x4e,0xf0,0x7f,0xf5]
@ CHECK: dsb #0xd @ encoding: [0x4d,0xf0,0x7f,0xf5]
@ CHECK: dsb #0xc @ encoding: [0x4c,0xf0,0x7f,0xf5]
@ CHECK: dsb ish @ encoding: [0x4b,0xf0,0x7f,0xf5]
@ CHECK: dsb ishst @ encoding: [0x4a,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x9 @ encoding: [0x49,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x8 @ encoding: [0x48,0xf0,0x7f,0xf5]
@ CHECK: dsb nsh @ encoding: [0x47,0xf0,0x7f,0xf5]
@ CHECK: dsb nshst @ encoding: [0x46,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x5 @ encoding: [0x45,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x4 @ encoding: [0x44,0xf0,0x7f,0xf5]
@ CHECK: dsb osh @ encoding: [0x43,0xf0,0x7f,0xf5]
@ CHECK: dsb oshst @ encoding: [0x42,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x1 @ encoding: [0x41,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x0 @ encoding: [0x40,0xf0,0x7f,0xf5]
@ CHECK: dsb #0x8 @ encoding: [0x48,0xf0,0x7f,0xf5]
@ CHECK: dsb nsh @ encoding: [0x47,0xf0,0x7f,0xf5]
@ CHECK: dsb sy @ encoding: [0x4f,0xf0,0x7f,0xf5]
@ CHECK: dsb st @ encoding: [0x4e,0xf0,0x7f,0xf5]
@ CHECK: dsb ish @ encoding: [0x4b,0xf0,0x7f,0xf5]

68
test/MC/ARM/basic-thumb2-instructions.s
View File

@ -417,6 +417,23 @@ _func:
@------------------------------------------------------------------------------
@ DMB
@------------------------------------------------------------------------------
dmb #0xf
dmb #0xe
dmb #0xd
dmb #0xc
dmb #0xb
dmb #0xa
dmb #0x9
dmb #0x8
dmb #0x7
dmb #0x6
dmb #0x5
dmb #0x4
dmb #0x3
dmb #0x2
dmb #0x1
dmb #0x0
dmb sy
dmb st
dmb sh
@ -431,6 +448,23 @@ _func:
dmb oshst
dmb
@ CHECK: dmb sy @ encoding: [0xbf,0xf3,0x5f,0x8f]
@ CHECK: dmb st @ encoding: [0xbf,0xf3,0x5e,0x8f]
@ CHECK: dmb #0xd @ encoding: [0xbf,0xf3,0x5d,0x8f]
@ CHECK: dmb #0xc @ encoding: [0xbf,0xf3,0x5c,0x8f]
@ CHECK: dmb ish @ encoding: [0xbf,0xf3,0x5b,0x8f]
@ CHECK: dmb ishst @ encoding: [0xbf,0xf3,0x5a,0x8f]
@ CHECK: dmb #0x9 @ encoding: [0xbf,0xf3,0x59,0x8f]
@ CHECK: dmb #0x8 @ encoding: [0xbf,0xf3,0x58,0x8f]
@ CHECK: dmb nsh @ encoding: [0xbf,0xf3,0x57,0x8f]
@ CHECK: dmb nshst @ encoding: [0xbf,0xf3,0x56,0x8f]
@ CHECK: dmb #0x5 @ encoding: [0xbf,0xf3,0x55,0x8f]
@ CHECK: dmb #0x4 @ encoding: [0xbf,0xf3,0x54,0x8f]
@ CHECK: dmb osh @ encoding: [0xbf,0xf3,0x53,0x8f]
@ CHECK: dmb oshst @ encoding: [0xbf,0xf3,0x52,0x8f]
@ CHECK: dmb #0x1 @ encoding: [0xbf,0xf3,0x51,0x8f]
@ CHECK: dmb #0x0 @ encoding: [0xbf,0xf3,0x50,0x8f]
@ CHECK: dmb sy @ encoding: [0xbf,0xf3,0x5f,0x8f]
@ CHECK: dmb st @ encoding: [0xbf,0xf3,0x5e,0x8f]
@ CHECK: dmb ish @ encoding: [0xbf,0xf3,0x5b,0x8f]
@ -449,6 +483,23 @@ _func:
@------------------------------------------------------------------------------
@ DSB
@------------------------------------------------------------------------------
dsb #0xf
dsb #0xe
dsb #0xd
dsb #0xc
dsb #0xb
dsb #0xa
dsb #0x9
dsb #0x8
dsb #0x7
dsb #0x6
dsb #0x5
dsb #0x4
dsb #0x3
dsb #0x2
dsb #0x1
dsb #0x0
dsb sy
dsb st
dsb sh
@ -463,6 +514,23 @@ _func:
dsb oshst
dsb
@ CHECK: dsb sy @ encoding: [0xbf,0xf3,0x4f,0x8f]
@ CHECK: dsb st @ encoding: [0xbf,0xf3,0x4e,0x8f]
@ CHECK: dsb #0xd @ encoding: [0xbf,0xf3,0x4d,0x8f]
@ CHECK: dsb #0xc @ encoding: [0xbf,0xf3,0x4c,0x8f]
@ CHECK: dsb ish @ encoding: [0xbf,0xf3,0x4b,0x8f]
@ CHECK: dsb ishst @ encoding: [0xbf,0xf3,0x4a,0x8f]
@ CHECK: dsb #0x9 @ encoding: [0xbf,0xf3,0x49,0x8f]
@ CHECK: dsb #0x8 @ encoding: [0xbf,0xf3,0x48,0x8f]
@ CHECK: dsb nsh @ encoding: [0xbf,0xf3,0x47,0x8f]
@ CHECK: dsb nshst @ encoding: [0xbf,0xf3,0x46,0x8f]
@ CHECK: dsb #0x5 @ encoding: [0xbf,0xf3,0x45,0x8f]
@ CHECK: dsb #0x4 @ encoding: [0xbf,0xf3,0x44,0x8f]
@ CHECK: dsb osh @ encoding: [0xbf,0xf3,0x43,0x8f]
@ CHECK: dsb oshst @ encoding: [0xbf,0xf3,0x42,0x8f]
@ CHECK: dsb #0x1 @ encoding: [0xbf,0xf3,0x41,0x8f]
@ CHECK: dsb #0x0 @ encoding: [0xbf,0xf3,0x40,0x8f]
@ CHECK: dsb sy @ encoding: [0xbf,0xf3,0x4f,0x8f]
@ CHECK: dsb st @ encoding: [0xbf,0xf3,0x4e,0x8f]
@ CHECK: dsb ish @ encoding: [0xbf,0xf3,0x4b,0x8f]

94
test/MC/Disassembler/ARM/basic-arm-instructions.txt
View File

@ -475,47 +475,77 @@
#------------------------------------------------------------------------------
# DMB
#------------------------------------------------------------------------------
# CHECK: dmb sy
# CHECK: dmb st
# CHECK: dmb ish
# CHECK: dmb ishst
# CHECK: dmb nsh
# CHECK: dmb nshst
# CHECK: dmb osh
# CHECK: dmb oshst
# CHECK: dmb
0x5f 0xf0 0x7f 0xf5
0x5e 0xf0 0x7f 0xf5
0x5b 0xf0 0x7f 0xf5
0x5a 0xf0 0x7f 0xf5
0x57 0xf0 0x7f 0xf5
0x56 0xf0 0x7f 0xf5
0x53 0xf0 0x7f 0xf5
# CHECK: dmb #0x0
# CHECK: dmb #0x1
# CHECK: dmb oshst
# CHECK: dmb osh
# CHECK: dmb #0x4
# CHECK: dmb #0x5
# CHECK: dmb nshst
# CHECK: dmb nsh
# CHECK: dmb #0x8
# CHECK: dmb #0x9
# CHECK: dmb ishst
# CHECK: dmb ish
# CHECK: dmb #0xc
# CHECK: dmb #0xd
# CHECK: dmb st
# CHECK: dmb sy
0x50 0xf0 0x7f 0xf5
0x51 0xf0 0x7f 0xf5
0x52 0xf0 0x7f 0xf5
0x53 0xf0 0x7f 0xf5
0x54 0xf0 0x7f 0xf5
0x55 0xf0 0x7f 0xf5
0x56 0xf0 0x7f 0xf5
0x57 0xf0 0x7f 0xf5
0x58 0xf0 0x7f 0xf5
0x59 0xf0 0x7f 0xf5
0x5a 0xf0 0x7f 0xf5
0x5b 0xf0 0x7f 0xf5
0x5c 0xf0 0x7f 0xf5
0x5d 0xf0 0x7f 0xf5
0x5e 0xf0 0x7f 0xf5
0x5f 0xf0 0x7f 0xf5
#------------------------------------------------------------------------------
# DSB
#------------------------------------------------------------------------------
# CHECK: dsb sy
# CHECK: dsb st
# CHECK: dsb ish
# CHECK: dsb ishst
# CHECK: dsb nsh
# CHECK: dsb nshst
# CHECK: dsb osh
# CHECK: dsb oshst
# CHECK: dsb
0x4f 0xf0 0x7f 0xf5
0x4e 0xf0 0x7f 0xf5
0x4b 0xf0 0x7f 0xf5
0x4a 0xf0 0x7f 0xf5
0x47 0xf0 0x7f 0xf5
0x46 0xf0 0x7f 0xf5
0x43 0xf0 0x7f 0xf5
# CHECK: dsb #0x0
# CHECK: dsb #0x1
# CHECK: dsb oshst
# CHECK: dsb osh
# CHECK: dsb #0x4
# CHECK: dsb #0x5
# CHECK: dsb nshst
# CHECK: dsb nsh
# CHECK: dsb #0x8
# CHECK: dsb #0x9
# CHECK: dsb ishst
# CHECK: dsb ish
# CHECK: dsb #0xc
# CHECK: dsb #0xd
# CHECK: dsb st
# CHECK: dsb sy
0x40 0xf0 0x7f 0xf5
0x41 0xf0 0x7f 0xf5
0x42 0xf0 0x7f 0xf5
0x43 0xf0 0x7f 0xf5
0x44 0xf0 0x7f 0xf5
0x45 0xf0 0x7f 0xf5
0x46 0xf0 0x7f 0xf5
0x47 0xf0 0x7f 0xf5
0x48 0xf0 0x7f 0xf5
0x49 0xf0 0x7f 0xf5
0x4a 0xf0 0x7f 0xf5
0x4b 0xf0 0x7f 0xf5
0x4c 0xf0 0x7f 0xf5
0x4d 0xf0 0x7f 0xf5
0x4e 0xf0 0x7f 0xf5
0x4f 0xf0 0x7f 0xf5
#------------------------------------------------------------------------------

34
test/MC/Disassembler/ARM/thumb2.txt
View File

@ -346,23 +346,37 @@
#------------------------------------------------------------------------------
#CHECK: dmb sy
#CHECK: dmb st
#CHECK: dmb #0xd
#CHECK: dmb #0xc
#CHECK: dmb ish
#CHECK: dmb ishst
#CHECK: dmb #0x9
#CHECK: dmb #0x8
#CHECK: dmb nsh
#CHECK: dmb nshst
#CHECK: dmb #0x5
#CHECK: dmb #0x4
#CHECK: dmb osh
#CHECK: dmb oshst
#CHECK: dmb
#CHECK: dmb #0x1
#CHECK: dmb #0x0
0xbf 0xf3 0x5f 0x8f
0xbf 0xf3 0x5e 0x8f
0xbf 0xf3 0x5d 0x8f
0xbf 0xf3 0x5c 0x8f
0xbf 0xf3 0x5b 0x8f
0xbf 0xf3 0x5a 0x8f
0xbf 0xf3 0x59 0x8f
0xbf 0xf3 0x58 0x8f
0xbf 0xf3 0x57 0x8f
0xbf 0xf3 0x56 0x8f
0xbf 0xf3 0x55 0x8f
0xbf 0xf3 0x54 0x8f
0xbf 0xf3 0x53 0x8f
0xbf 0xf3 0x52 0x8f
0xbf 0xf3 0x5f 0x8f
0xbf 0xf3 0x51 0x8f
0xbf 0xf3 0x50 0x8f
#------------------------------------------------------------------------------
@ -370,21 +384,37 @@
#------------------------------------------------------------------------------
#CHECK: dsb sy
#CHECK: dsb st
#CHECK: dsb #0xd
#CHECK: dsb #0xc
#CHECK: dsb ish
#CHECK: dsb ishst
#CHECK: dsb #0x9
#CHECK: dsb #0x8
#CHECK: dsb nsh
#CHECK: dsb nshst
#CHECK: dsb #0x5
#CHECK: dsb #0x4
#CHECK: dsb osh
#CHECK: dsb oshst
#CHECK: dsb #0x1
#CHECK: dsb #0x0
0xbf 0xf3 0x4f 0x8f
0xbf 0xf3 0x4e 0x8f
0xbf 0xf3 0x4d 0x8f
0xbf 0xf3 0x4c 0x8f
0xbf 0xf3 0x4b 0x8f
0xbf 0xf3 0x4a 0x8f
0xbf 0xf3 0x49 0x8f
0xbf 0xf3 0x48 0x8f
0xbf 0xf3 0x47 0x8f
0xbf 0xf3 0x46 0x8f
0xbf 0xf3 0x45 0x8f
0xbf 0xf3 0x44 0x8f
0xbf 0xf3 0x43 0x8f
0xbf 0xf3 0x42 0x8f
0xbf 0xf3 0x41 0x8f
0xbf 0xf3 0x40 0x8f
#------------------------------------------------------------------------------