[mips][microMIPS] Implement CACHE, PREF, SSNOP, EHB and PAUSE instructions

Differential Revision: http://reviews.llvm.org/D5204

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224785 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index a00e57953f96f4be2304d30d49a50b109e36eea2..fb380ed4a09fa469fd263e56d8f169b30dbca18c 100644 (file)
--- a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -1376,6 +1376,15 @@ bool MipsAsmParser::processInstruction(MCInst &Inst, SMLoc IDLoc,
         if (Imm < 0 || Imm > 60 || (Imm % 4 != 0))
           return Error(IDLoc, "immediate operand value out of range");
         break;
+      case Mips::CACHE:
+      case Mips::PREF:
+        Opnd = Inst.getOperand(2);
+        if (!Opnd.isImm())
+          return Error(IDLoc, "expected immediate operand kind");
+        Imm = Opnd.getImm();
+        if (!isUInt<5>(Imm))
+          return Error(IDLoc, "immediate operand value out of range");
+        break;
     }
   }
 

diff --git a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
index f4f870bc4ecd1796d9c79ea12e755ba345fb6155..3648211a0f97369d40548f2f0c5af049c18d6db5 100644 (file)
--- a/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
+++ b/lib/Target/Mips/Disassembler/MipsDisassembler.cpp
@@ -252,6 +252,11 @@ static DecodeStatus DecodeCacheOp(MCInst &Inst,
                               uint64_t Address,
                               const void *Decoder);
 
+static DecodeStatus DecodeCacheOpMM(MCInst &Inst,
+                                    unsigned Insn,
+                                    uint64_t Address,
+                                    const void *Decoder);
+
 static DecodeStatus DecodeSyncI(MCInst &Inst,
                                 unsigned Insn,
                                 uint64_t Address,
@@ -1089,6 +1094,23 @@ static DecodeStatus DecodeCacheOp(MCInst &Inst,
   return MCDisassembler::Success;
 }
 
+static DecodeStatus DecodeCacheOpMM(MCInst &Inst,
+                                    unsigned Insn,
+                                    uint64_t Address,
+                                    const void *Decoder) {
+  int Offset = SignExtend32<12>(Insn & 0xfff);
+  unsigned Base = fieldFromInstruction(Insn, 16, 5);
+  unsigned Hint = fieldFromInstruction(Insn, 21, 5);
+
+  Base = getReg(Decoder, Mips::GPR32RegClassID, Base);
+
+  Inst.addOperand(MCOperand::CreateReg(Base));
+  Inst.addOperand(MCOperand::CreateImm(Offset));
+  Inst.addOperand(MCOperand::CreateImm(Hint));
+
+  return MCDisassembler::Success;
+}
+
 static DecodeStatus DecodeSyncI(MCInst &Inst,
                               unsigned Insn,
                               uint64_t Address,

diff --git a/lib/Target/Mips/MicroMipsInstrFormats.td b/lib/Target/Mips/MicroMipsInstrFormats.td
index fb9608200b5517a180b420f46f229387ddda619a..978e39abf1463cb4482b5f24409cbf864c5ce902 100644 (file)
--- a/lib/Target/Mips/MicroMipsInstrFormats.td
+++ b/lib/Target/Mips/MicroMipsInstrFormats.td
@@ -861,3 +861,29 @@ class LWM_FM_MM16<bits<4> funct> : MMArch {
   let Inst{5-4}   = rt;
   let Inst{3-0}   = addr;
 }
+
+class CACHE_PREF_FM_MM<bits<6> op, bits<4> funct> : MMArch {
+  bits<21> addr;
+  bits<5> hint;
+  bits<5> base = addr{20-16};
+  bits<12> offset = addr{11-0};
+
+  bits<32> Inst;
+
+  let Inst{31-26} = op;
+  let Inst{25-21} = hint;
+  let Inst{20-16} = base;
+  let Inst{15-12} = funct;
+  let Inst{11-0}  = offset;
+}
+
+class BARRIER_FM_MM<bits<5> op> : MMArch {
+  bits<32> Inst;
+
+  let Inst{31-26} = 0x0;
+  let Inst{25-21} = 0x0;
+  let Inst{20-16} = 0x0;
+  let Inst{15-11} = op;
+  let Inst{10-6}  = 0x0;
+  let Inst{5-0}   = 0x0;
+}

diff --git a/lib/Target/Mips/MicroMipsInstrInfo.td b/lib/Target/Mips/MicroMipsInstrInfo.td
index 86d44bbe666790bbf1b995cab31d0d93ffc3ec72..77686290ecb762c9c8f12c1d2a5c89d8cde994c5 100644 (file)
--- a/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -740,6 +740,16 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
   def LL_MM : LLBaseMM<"ll", GPR32Opnd>, LL_FM_MM<0x3>;
   def SC_MM : SCBaseMM<"sc", GPR32Opnd>, LL_FM_MM<0xb>;
 
+  let DecoderMethod = "DecodeCacheOpMM" in {
+  def CACHE_MM : MMRel, CacheOp<"cache", mem_mm_12>,
+                 CACHE_PREF_FM_MM<0x08, 0x6>;
+  def PREF_MM  : MMRel, CacheOp<"pref", mem_mm_12>,
+                 CACHE_PREF_FM_MM<0x18, 0x2>;
+  }
+  def SSNOP_MM : MMRel, Barrier<"ssnop">, BARRIER_FM_MM<0x1>;
+  def EHB_MM   : MMRel, Barrier<"ehb">, BARRIER_FM_MM<0x3>;
+  def PAUSE_MM : MMRel, Barrier<"pause">, BARRIER_FM_MM<0x5>;
+
   def TLBP_MM : MMRel, TLB<"tlbp">, COP0_TLB_FM_MM<0x0d>;
   def TLBR_MM : MMRel, TLB<"tlbr">, COP0_TLB_FM_MM<0x4d>;
   def TLBWI_MM : MMRel, TLB<"tlbwi">, COP0_TLB_FM_MM<0x8d>;

diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index 18f774aff33860acf81ad3e09ae34f6ccd3b8688..61a1f5100036dd5d28a64c80a23a7551bbb5af46 100644 (file)
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -1466,10 +1466,10 @@ def MFC2 : MFC3OP<"mfc2", GPR32Opnd>, MFC3OP_FM<0x12, 0>;
 def MTC2 : MFC3OP<"mtc2", GPR32Opnd>, MFC3OP_FM<0x12, 4>;
 
 class Barrier<string asmstr> : InstSE<(outs), (ins), asmstr, [], NoItinerary,
-                                      FrmOther>;
-def SSNOP : Barrier<"ssnop">, BARRIER_FM<1>;
-def EHB : Barrier<"ehb">, BARRIER_FM<3>;
-def PAUSE : Barrier<"pause">, BARRIER_FM<5>, ISA_MIPS32R2;
+                                      FrmOther, asmstr>;
+def SSNOP : MMRel, Barrier<"ssnop">, BARRIER_FM<1>;
+def EHB : MMRel, Barrier<"ehb">, BARRIER_FM<3>;
+def PAUSE : MMRel, Barrier<"pause">, BARRIER_FM<5>, ISA_MIPS32R2;
 
 // JR_HB and JALR_HB are defined here using the new style naming
 // scheme because some of this code is shared with Mips32r6InstrInfo.td
@@ -1520,13 +1520,14 @@ def TLBWR : MMRel, TLB<"tlbwr">, COP0_TLB_FM<0x06>;
 
 class CacheOp<string instr_asm, Operand MemOpnd> :
     InstSE<(outs), (ins  MemOpnd:$addr, uimm5:$hint),
-           !strconcat(instr_asm, "\t$hint, $addr"), [], NoItinerary, FrmOther> {
+           !strconcat(instr_asm, "\t$hint, $addr"), [], NoItinerary, FrmOther,
+           instr_asm> {
   let DecoderMethod = "DecodeCacheOp";
 }
 
-def CACHE : CacheOp<"cache", mem>, CACHEOP_FM<0b101111>,
+def CACHE : MMRel, CacheOp<"cache", mem>, CACHEOP_FM<0b101111>,
             INSN_MIPS3_32_NOT_32R6_64R6;
-def PREF :  CacheOp<"pref", mem>, CACHEOP_FM<0b110011>,
+def PREF :  MMRel, CacheOp<"pref", mem>, CACHEOP_FM<0b110011>,
             INSN_MIPS3_32_NOT_32R6_64R6;
 
 //===----------------------------------------------------------------------===//

diff --git a/test/MC/Disassembler/Mips/micromips.txt b/test/MC/Disassembler/Mips/micromips.txt
index 6de6bba9c2311ed4e30072498d65090eab00a0fd..9acad9f86927b7b32c90e69b0d0d02e33437a74d 100644 (file)
--- a/test/MC/Disassembler/Mips/micromips.txt
+++ b/test/MC/Disassembler/Mips/micromips.txt
@@ -316,6 +316,21 @@
 # CHECK: tnei $9, 17767
 0x41 0x89 0x45 0x67
 
+# CHECK: cache 1, 8($5)
+0x20 0x25 0x60 0x08
+
+# CHECK: pref 1, 8($5)
+0x60 0x25 0x20 0x08
+
+# CHECK: ssnop
+0x00 0x00 0x08 0x00
+
+# CHECK: ehb
+0x00 0x00 0x18 0x00
+
+# CHECK: pause
+0x00 0x00 0x28 0x00
+
 # CHECK: ll $2, 8($4)
 0x60 0x44 0x30 0x08
 

diff --git a/test/MC/Disassembler/Mips/micromips_le.txt b/test/MC/Disassembler/Mips/micromips_le.txt
index 5cc582be2ad9cc1f1a31e01e20ba34c254ca66e1..1015c24c15926f2ece492682b4cbd3afec1a3a5b 100644 (file)
--- a/test/MC/Disassembler/Mips/micromips_le.txt
+++ b/test/MC/Disassembler/Mips/micromips_le.txt
@@ -316,6 +316,21 @@
 # CHECK: tnei $9, 17767
 0x89 0x41 0x67 0x45
 
+# CHECK: cache 1, 8($5)
+0x25 0x20 0x08 0x60
+
+# CHECK: pref 1, 8($5)
+0x25 0x60 0x08 0x20
+
+# CHECK: ssnop
+0x00 0x00 0x00 0x08
+
+# CHECK: ehb
+0x00 0x00 0x00 0x18
+
+# CHECK: pause
+0x00 0x00 0x00 0x28
+
 # CHECK: ll $2, 8($4)
 0x44 0x60 0x08 0x30
 

diff --git a/test/MC/Mips/micromips-control-instructions.s b/test/MC/Mips/micromips-control-instructions.s
index e79896dcd2c35054d691f0e20983e854e5474858..76c953f85d556d621b918c0f6eaa041360485159 100644 (file)
--- a/test/MC/Mips/micromips-control-instructions.s
+++ b/test/MC/Mips/micromips-control-instructions.s
@@ -15,6 +15,11 @@
 # CHECK-EL:    .set mips32r2
 # CHECK-EL:    rdhwr $5, $29
 # CHECK-EL:    .set pop                   # encoding: [0xbd,0x00,0x3c,0x6b]
+# CHECK-EL:    cache 1, 8($5)             # encoding: [0x25,0x20,0x08,0x60]
+# CHECK-EL:    pref 1, 8($5)              # encoding: [0x25,0x60,0x08,0x20]
+# CHECK-EL:    ssnop                      # encoding: [0x00,0x00,0x00,0x08]
+# CHECK-EL:    ehb                        # encoding: [0x00,0x00,0x00,0x18]
+# CHECK-EL:    pause                      # encoding: [0x00,0x00,0x00,0x28]
 # CHECK-EL:    break                      # encoding: [0x00,0x00,0x07,0x00]
 # CHECK-EL:    break 7                    # encoding: [0x07,0x00,0x07,0x00]
 # CHECK-EL:    break 7, 5                 # encoding: [0x07,0x00,0x47,0x01]
@@ -43,6 +48,11 @@
 # CHECK-EB:   .set mips32r2
 # CHECK-EB:   rdhwr $5, $29
 # CHECK-EB:   .set pop                    # encoding: [0x00,0xbd,0x6b,0x3c]
+# CHECK-EB:   cache 1, 8($5)              # encoding: [0x20,0x25,0x60,0x08]
+# CHECK-EB:   pref 1, 8($5)               # encoding: [0x60,0x25,0x20,0x08]
+# CHECK-EB:   ssnop                       # encoding: [0x00,0x00,0x08,0x00]
+# CHECK-EB:   ehb                         # encoding: [0x00,0x00,0x18,0x00]
+# CHECK-EB:   pause                       # encoding: [0x00,0x00,0x28,0x00]
 # CHECK-EB:   break                       # encoding: [0x00,0x00,0x00,0x07]
 # CHECK-EB:   break 7                     # encoding: [0x00,0x07,0x00,0x07]
 # CHECK-EB:   break 7, 5                  # encoding: [0x00,0x07,0x01,0x47]
@@ -66,6 +76,11 @@
     sdbbp
     sdbbp 34
     rdhwr $5, $29
+    cache 1, 8($5)
+    pref 1, 8($5)
+    ssnop
+    ehb
+    pause
     break
     break 7
     break 7,5

diff --git a/test/MC/Mips/micromips-invalid.s b/test/MC/Mips/micromips-invalid.s
index 9688ebe197c4e27e9685e7d24b21b3fedc9a221c..b94313a7fc14844dd6420d10fb6954c5c3ca4068 100644 (file)
--- a/test/MC/Mips/micromips-invalid.s
+++ b/test/MC/Mips/micromips-invalid.s
@@ -62,3 +62,5 @@
   sb16  $7, 4($9)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
   sh16  $7, 8($9)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
   sw16  $7, 4($10)  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: invalid operand for instruction
+  cache 256, 8($5)  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: immediate operand value out of range
+  pref 256, 8($5)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: immediate operand value out of range