//
//===----------------------------------------------------------------------===//
-#include "X86DisassemblerShared.h"
#include "X86DisassemblerTables.h"
-
-#include "llvm/TableGen/TableGenBackend.h"
+#include "X86DisassemblerShared.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
+#include "llvm/TableGen/TableGenBackend.h"
#include <map>
using namespace llvm;
case IC_64BIT_REXW_OPSIZE:
return false;
case IC_VEX:
- return inheritsFrom(child, IC_VEX_W) ||
+ return (VEX_LIG && inheritsFrom(child, IC_VEX_L_W)) ||
+ inheritsFrom(child, IC_VEX_W) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L));
case IC_VEX_XS:
- return inheritsFrom(child, IC_VEX_W_XS) ||
+ return (VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XS)) ||
+ inheritsFrom(child, IC_VEX_W_XS) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L_XS));
case IC_VEX_XD:
- return inheritsFrom(child, IC_VEX_W_XD) ||
+ return (VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XD)) ||
+ inheritsFrom(child, IC_VEX_W_XD) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L_XD));
case IC_VEX_OPSIZE:
- return inheritsFrom(child, IC_VEX_W_OPSIZE) ||
+ return (VEX_LIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE)) ||
+ inheritsFrom(child, IC_VEX_W_OPSIZE) ||
(VEX_LIG && inheritsFrom(child, IC_VEX_L_OPSIZE));
case IC_VEX_W:
+ return VEX_LIG && inheritsFrom(child, IC_VEX_L_W);
case IC_VEX_W_XS:
+ return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XS);
case IC_VEX_W_XD:
+ return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_XD);
case IC_VEX_W_OPSIZE:
- return false;
+ return VEX_LIG && inheritsFrom(child, IC_VEX_L_W_OPSIZE);
case IC_VEX_L:
+ return inheritsFrom(child, IC_VEX_L_W);
case IC_VEX_L_XS:
+ return inheritsFrom(child, IC_VEX_L_W_XS);
case IC_VEX_L_XD:
- return false;
+ return inheritsFrom(child, IC_VEX_L_W_XD);
case IC_VEX_L_OPSIZE:
return inheritsFrom(child, IC_VEX_L_W_OPSIZE);
+ case IC_VEX_L_W:
+ case IC_VEX_L_W_XS:
+ case IC_VEX_L_W_XD:
case IC_VEX_L_W_OPSIZE:
return false;
+ case IC_EVEX:
+ return inheritsFrom(child, IC_EVEX_W) ||
+ inheritsFrom(child, IC_EVEX_L_W);
+ case IC_EVEX_XS:
+ return inheritsFrom(child, IC_EVEX_W_XS) ||
+ inheritsFrom(child, IC_EVEX_L_W_XS);
+ case IC_EVEX_XD:
+ return inheritsFrom(child, IC_EVEX_W_XD) ||
+ inheritsFrom(child, IC_EVEX_L_W_XD);
+ case IC_EVEX_OPSIZE:
+ return inheritsFrom(child, IC_EVEX_W_OPSIZE) ||
+ inheritsFrom(child, IC_EVEX_L_W_OPSIZE);
+ case IC_EVEX_W:
+ case IC_EVEX_W_XS:
+ case IC_EVEX_W_XD:
+ case IC_EVEX_W_OPSIZE:
+ return false;
+ case IC_EVEX_L:
+ case IC_EVEX_L_XS:
+ case IC_EVEX_L_XD:
+ case IC_EVEX_L_OPSIZE:
+ return false;
+ case IC_EVEX_L_W:
+ case IC_EVEX_L_W_XS:
+ case IC_EVEX_L_W_XD:
+ case IC_EVEX_L_W_OPSIZE:
+ return false;
+ case IC_EVEX_L2:
+ case IC_EVEX_L2_XS:
+ case IC_EVEX_L2_XD:
+ case IC_EVEX_L2_OPSIZE:
+ return false;
+ case IC_EVEX_L2_W:
+ case IC_EVEX_L2_W_XS:
+ case IC_EVEX_L2_W_XD:
+ case IC_EVEX_L2_W_OPSIZE:
+ return false;
+ case IC_EVEX_K:
+ return inheritsFrom(child, IC_EVEX_W_K) ||
+ inheritsFrom(child, IC_EVEX_L_W_K);
+ case IC_EVEX_XS_K:
+ return inheritsFrom(child, IC_EVEX_W_XS_K) ||
+ inheritsFrom(child, IC_EVEX_L_W_XS_K);
+ case IC_EVEX_XD_K:
+ return inheritsFrom(child, IC_EVEX_W_XD_K) ||
+ inheritsFrom(child, IC_EVEX_L_W_XD_K);
+ case IC_EVEX_OPSIZE_K:
+ return inheritsFrom(child, IC_EVEX_W_OPSIZE_K) ||
+ inheritsFrom(child, IC_EVEX_W_OPSIZE_K);
+ case IC_EVEX_W_K:
+ case IC_EVEX_W_XS_K:
+ case IC_EVEX_W_XD_K:
+ case IC_EVEX_W_OPSIZE_K:
+ return false;
+ case IC_EVEX_L_K:
+ case IC_EVEX_L_XS_K:
+ case IC_EVEX_L_XD_K:
+ case IC_EVEX_L_OPSIZE_K:
+ return false;
+ case IC_EVEX_W_KZ:
+ case IC_EVEX_W_XS_KZ:
+ case IC_EVEX_W_XD_KZ:
+ case IC_EVEX_W_OPSIZE_KZ:
+ return false;
+ case IC_EVEX_L_KZ:
+ case IC_EVEX_L_XS_KZ:
+ case IC_EVEX_L_XD_KZ:
+ case IC_EVEX_L_OPSIZE_KZ:
+ return false;
+ case IC_EVEX_L_W_K:
+ case IC_EVEX_L_W_XS_K:
+ case IC_EVEX_L_W_XD_K:
+ case IC_EVEX_L_W_OPSIZE_K:
+ case IC_EVEX_L_W_KZ:
+ case IC_EVEX_L_W_XS_KZ:
+ case IC_EVEX_L_W_XD_KZ:
+ case IC_EVEX_L_W_OPSIZE_KZ:
+ return false;
+ case IC_EVEX_L2_K:
+ case IC_EVEX_L2_B:
+ case IC_EVEX_L2_XS_K:
+ case IC_EVEX_L2_XD_K:
+ case IC_EVEX_L2_OPSIZE_K:
+ case IC_EVEX_L2_OPSIZE_B:
+ case IC_EVEX_L2_OPSIZE_K_B:
+ case IC_EVEX_L2_KZ:
+ case IC_EVEX_L2_XS_KZ:
+ case IC_EVEX_L2_XD_KZ:
+ case IC_EVEX_L2_OPSIZE_KZ:
+ case IC_EVEX_L2_OPSIZE_KZ_B:
+ return false;
+ case IC_EVEX_L2_W_K:
+ case IC_EVEX_L2_W_B:
+ case IC_EVEX_L2_W_XS_K:
+ case IC_EVEX_L2_W_XD_K:
+ case IC_EVEX_L2_W_OPSIZE_K:
+ case IC_EVEX_L2_W_OPSIZE_B:
+ case IC_EVEX_L2_W_OPSIZE_K_B:
+ case IC_EVEX_L2_W_KZ:
+ case IC_EVEX_L2_W_XS_KZ:
+ case IC_EVEX_L2_W_XD_KZ:
+ case IC_EVEX_L2_W_OPSIZE_KZ:
+ case IC_EVEX_L2_W_OPSIZE_KZ_B:
+ return false;
default:
llvm_unreachable("Unknown instruction class");
}
assert(lower < IC_max);
#define ENUM_ENTRY(n, r, d) r,
+#define ENUM_ENTRY_K_B(n, r, d) ENUM_ENTRY(n, r, d) \
+ ENUM_ENTRY(n##_K_B, r, d) ENUM_ENTRY(n##_KZ_B, r, d) \
+ ENUM_ENTRY(n##_KZ, r, d) ENUM_ENTRY(n##_K, r, d) ENUM_ENTRY(n##_B, r, d)
static int ranks[IC_max] = {
INSTRUCTION_CONTEXTS
};
#undef ENUM_ENTRY
+#undef ENUM_ENTRY_K_B
return (ranks[upper] > ranks[lower]);
}
default:
llvm_unreachable("Unhandled instruction class");
#define ENUM_ENTRY(n, r, d) case n: return #n; break;
+#define ENUM_ENTRY_K_B(n, r, d) ENUM_ENTRY(n, r, d) ENUM_ENTRY(n##_K_B, r, d)\
+ ENUM_ENTRY(n##_KZ, r, d) ENUM_ENTRY(n##_K, r, d) ENUM_ENTRY(n##_B, r, d)\
+ ENUM_ENTRY(n##_KZ_B, r, d)
INSTRUCTION_CONTEXTS
#undef ENUM_ENTRY
+#undef ENUM_ENTRY_K_B
}
}
}
}
-void DisassemblerTables::emitOneID(raw_ostream &o, unsigned &i, InstrUID id,
- bool addComma) const {
- if (id)
- o.indent(i * 2) << format("0x%hx", id);
- else
- o.indent(i * 2) << 0;
-
- if (addComma)
- o << ", ";
- else
- o << " ";
-
- o << "/* ";
- o << InstructionSpecifiers[id].name;
- o << "*/";
-
- o << "\n";
-}
-
-/// emitEmptyTable - Emits the modRMEmptyTable, which is used as a ID table by
-/// all ModR/M decisions for instructions that are invalid for all possible
-/// ModR/M byte values.
-///
-/// @param o - The output stream on which to emit the table.
-/// @param i - The indentation level for that output stream.
-static void emitEmptyTable(raw_ostream &o, unsigned &i) {
- o.indent(i * 2) << "0x0, /* EmptyTable */\n";
-}
-
/// getDecisionType - Determines whether a ModRM decision with 255 entries can
/// be compacted by eliminating redundant information.
///
bool satisfiesOneEntry = true;
bool satisfiesSplitRM = true;
bool satisfiesSplitReg = true;
+ bool satisfiesSplitMisc = true;
for (unsigned index = 0; index < 256; ++index) {
if (decision.instructionIDs[index] != decision.instructionIDs[0])
if (((index & 0xc0) != 0xc0) &&
(decision.instructionIDs[index] != decision.instructionIDs[index&0x38]))
- satisfiesSplitReg = false;
+ satisfiesSplitMisc = false;
}
if (satisfiesOneEntry)
if (satisfiesSplitRM)
return MODRM_SPLITRM;
- if (satisfiesSplitReg)
+ if (satisfiesSplitReg && satisfiesSplitMisc)
return MODRM_SPLITREG;
+ if (satisfiesSplitMisc)
+ return MODRM_SPLITMISC;
+
return MODRM_FULL;
}
void DisassemblerTables::emitModRMDecision(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
+ unsigned &ModRMTableNum,
ModRMDecision &decision) const {
static uint32_t sTableNumber = 0;
static uint32_t sEntryNumber = 1;
return;
}
- o1 << "/* Table" << sTableNumber << " */\n";
- i1++;
+ std::vector<unsigned> ModRMDecision;
switch (dt) {
default:
llvm_unreachable("Unknown decision type");
case MODRM_ONEENTRY:
- emitOneID(o1, i1, decision.instructionIDs[0], true);
+ ModRMDecision.push_back(decision.instructionIDs[0]);
break;
case MODRM_SPLITRM:
- emitOneID(o1, i1, decision.instructionIDs[0x00], true); // mod = 0b00
- emitOneID(o1, i1, decision.instructionIDs[0xc0], true); // mod = 0b11
+ ModRMDecision.push_back(decision.instructionIDs[0x00]);
+ ModRMDecision.push_back(decision.instructionIDs[0xc0]);
break;
case MODRM_SPLITREG:
for (unsigned index = 0; index < 64; index += 8)
- emitOneID(o1, i1, decision.instructionIDs[index], true);
+ ModRMDecision.push_back(decision.instructionIDs[index]);
for (unsigned index = 0xc0; index < 256; index += 8)
- emitOneID(o1, i1, decision.instructionIDs[index], true);
+ ModRMDecision.push_back(decision.instructionIDs[index]);
+ break;
+ case MODRM_SPLITMISC:
+ for (unsigned index = 0; index < 64; index += 8)
+ ModRMDecision.push_back(decision.instructionIDs[index]);
+ for (unsigned index = 0xc0; index < 256; ++index)
+ ModRMDecision.push_back(decision.instructionIDs[index]);
break;
case MODRM_FULL:
for (unsigned index = 0; index < 256; ++index)
- emitOneID(o1, i1, decision.instructionIDs[index], true);
+ ModRMDecision.push_back(decision.instructionIDs[index]);
break;
}
- i1--;
+ unsigned &EntryNumber = ModRMTable[ModRMDecision];
+ if (EntryNumber == 0) {
+ EntryNumber = ModRMTableNum;
+
+ ModRMTableNum += ModRMDecision.size();
+ o1 << "/* Table" << EntryNumber << " */\n";
+ i1++;
+ for (std::vector<unsigned>::const_iterator I = ModRMDecision.begin(),
+ E = ModRMDecision.end(); I != E; ++I) {
+ o1.indent(i1 * 2) << format("0x%hx", *I) << ", /* "
+ << InstructionSpecifiers[*I].name << " */\n";
+ }
+ i1--;
+ }
o2.indent(i2) << "{ /* struct ModRMDecision */" << "\n";
i2++;
o2.indent(i2) << stringForDecisionType(dt) << "," << "\n";
- o2.indent(i2) << sEntryNumber << " /* Table" << sTableNumber << " */\n";
+ o2.indent(i2) << EntryNumber << " /* Table" << EntryNumber << " */\n";
i2--;
o2.indent(i2) << "}";
case MODRM_SPLITREG:
sEntryNumber += 16;
break;
+ case MODRM_SPLITMISC:
+ sEntryNumber += 8 + 64;
+ break;
case MODRM_FULL:
sEntryNumber += 256;
break;
void DisassemblerTables::emitOpcodeDecision(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
+ unsigned &ModRMTableNum,
OpcodeDecision &decision) const {
o2.indent(i2) << "{ /* struct OpcodeDecision */" << "\n";
i2++;
o2 << "/* 0x" << format("%02hhx", index) << " */" << "\n";
- emitModRMDecision(o1, o2, i1, i2, decision.modRMDecisions[index]);
+ emitModRMDecision(o1, o2, i1, i2, ModRMTableNum,
+ decision.modRMDecisions[index]);
if (index < 255)
o2 << ",";
void DisassemblerTables::emitContextDecision(raw_ostream &o1, raw_ostream &o2,
unsigned &i1, unsigned &i2,
+ unsigned &ModRMTableNum,
ContextDecision &decision,
const char* name) const {
o2.indent(i2) << "static const struct ContextDecision " << name << " = {\n";
o2 << " */";
o2 << "\n";
- emitOpcodeDecision(o1, o2, i1, i2, decision.opcodeDecisions[index]);
+ emitOpcodeDecision(o1, o2, i1, i2, ModRMTableNum,
+ decision.opcodeDecisions[index]);
if (index + 1 < IC_max)
o2 << ", ";
if ((index & ATTR_VEXL) && (index & ATTR_REXW) && (index & ATTR_OPSIZE))
o << "IC_VEX_L_W_OPSIZE";
+ else if ((index & ATTR_VEXL) && (index & ATTR_REXW) && (index & ATTR_XD))
+ o << "IC_VEX_L_W_XD";
+ else if ((index & ATTR_VEXL) && (index & ATTR_REXW) && (index & ATTR_XS))
+ o << "IC_VEX_L_W_XS";
+ else if ((index & ATTR_VEXL) && (index & ATTR_REXW))
+ o << "IC_VEX_L_W";
else if ((index & ATTR_VEXL) && (index & ATTR_OPSIZE))
o << "IC_VEX_L_OPSIZE";
else if ((index & ATTR_VEXL) && (index & ATTR_XD))
}
void DisassemblerTables::emitContextDecisions(raw_ostream &o1, raw_ostream &o2,
- unsigned &i1, unsigned &i2) const {
- emitContextDecision(o1, o2, i1, i2, *Tables[0], ONEBYTE_STR);
- emitContextDecision(o1, o2, i1, i2, *Tables[1], TWOBYTE_STR);
- emitContextDecision(o1, o2, i1, i2, *Tables[2], THREEBYTE38_STR);
- emitContextDecision(o1, o2, i1, i2, *Tables[3], THREEBYTE3A_STR);
- emitContextDecision(o1, o2, i1, i2, *Tables[4], THREEBYTEA6_STR);
- emitContextDecision(o1, o2, i1, i2, *Tables[5], THREEBYTEA7_STR);
+ unsigned &i1, unsigned &i2,
+ unsigned &ModRMTableNum) const {
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[0], ONEBYTE_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[1], TWOBYTE_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[2], THREEBYTE38_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[3], THREEBYTE3A_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[4], THREEBYTEA6_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[5], THREEBYTEA7_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[6], XOP8_MAP_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[7], XOP9_MAP_STR);
+ emitContextDecision(o1, o2, i1, i2, ModRMTableNum, *Tables[8], XOPA_MAP_STR);
}
void DisassemblerTables::emit(raw_ostream &o) const {
emitContextTable(o, i2);
o << "\n";
+ unsigned ModRMTableNum = 0;
+
o << "static const InstrUID modRMTable[] = {\n";
i1++;
- emitEmptyTable(o1, i1);
+ std::vector<unsigned> EmptyTable(1, 0);
+ ModRMTable[EmptyTable] = ModRMTableNum;
+ ModRMTableNum += EmptyTable.size();
+ o1 << "/* EmptyTable */\n";
+ o1.indent(i1 * 2) << "0x0,\n";
i1--;
- emitContextDecisions(o1, o2, i1, i2);
+ emitContextDecisions(o1, o2, i1, i2, ModRMTableNum);
o << o1.str();
o << " 0x0\n";
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