This patch implements ei and di instructions for mips. Test cases are added.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188176 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/MipsInstrFormats.td b/lib/Target/Mips/MipsInstrFormats.td
index 13227848791d39129a0e6c980c5f682c5dcb94af..28abb7eb745c49e25958eacbd98fa26ebc6b6843 100644 (file)
--- a/lib/Target/Mips/MipsInstrFormats.td
+++ b/lib/Target/Mips/MipsInstrFormats.td
@@ -520,6 +520,24 @@ class ER_FM<bits<6> funct>
   let Inst{5-0}   = funct;
 }
 
+
+//===----------------------------------------------------------------------===//
+//  Enable/disable interrupt instruction format <Cop0|MFMC0|rt|12|0|sc|0|0>
+//===----------------------------------------------------------------------===//
+
+class EI_FM<bits<1> sc>
+{
+  bits<32> Inst;
+  bits<5> rt;
+  let Inst{31-26} = 0x10;
+  let Inst{25-21} = 0xb;
+  let Inst{20-16} = rt;
+  let Inst{15-11} = 0xc;
+  let Inst{10-6}  = 0;
+  let Inst{5}     = sc;
+  let Inst{4-0}   = 0;
+}
+
 //===----------------------------------------------------------------------===//
 //
 //  FLOATING POINT INSTRUCTION FORMATS

diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index c3213303f85bb18db566e0807aee29fbf042c2a9..65601b04de0d2c6cce92a6f8bed8545a5bfa9634 100644 (file)
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -660,6 +660,11 @@ class ER_FT<string opstr> :
   InstSE<(outs), (ins),
          opstr, [], NoItinerary, FrmOther>;
 
+// Interrupts
+class DEI_FT<string opstr, RegisterOperand RO> :
+  InstSE<(outs RO:$rt), (ins),
+         !strconcat(opstr, "\t$rt"), [], NoItinerary, FrmOther>;
+
 // Sync
 let hasSideEffects = 1 in
 class SYNC_FT :
@@ -953,7 +958,8 @@ defm LBu : LoadM<"lbu", GPR32Opnd, zextloadi8, IILoad, addrDefault>, MMRel,
 defm LH  : LoadM<"lh", GPR32Opnd, sextloadi16, IILoad, addrDefault>, MMRel,
            LW_FM<0x21>;
 defm LHu : LoadM<"lhu", GPR32Opnd, zextloadi16, IILoad>, MMRel, LW_FM<0x25>;
-defm LW  : LoadM<"lw", GPR32Opnd, load, IILoad, addrDefault>, MMRel, LW_FM<0x23>;
+defm LW  : LoadM<"lw", GPR32Opnd, load, IILoad, addrDefault>, MMRel,
+           LW_FM<0x23>;
 defm SB  : StoreM<"sb", GPR32Opnd, truncstorei8, IIStore>, MMRel, LW_FM<0x28>;
 defm SH  : StoreM<"sh", GPR32Opnd, truncstorei16, IIStore>, MMRel, LW_FM<0x29>;
 defm SW  : StoreM<"sw", GPR32Opnd, store, IIStore>, MMRel, LW_FM<0x2b>;
@@ -973,6 +979,9 @@ def SYSCALL : SYS_FT<"syscall">, SYS_FM<0xc>;
 def ERET : ER_FT<"eret">, ER_FM<0x18>;
 def DERET : ER_FT<"deret">, ER_FM<0x1f>;
 
+def EI : DEI_FT<"ei", GPR32Opnd>, EI_FM<1>;
+def DI : DEI_FT<"di", GPR32Opnd>, EI_FM<0>;
+
 /// Load-linked, Store-conditional
 let Predicates = [NotN64, HasStdEnc] in {
   def LL : LLBase<"ll", GPR32Opnd, mem>, LW_FM<0x30>;
@@ -1145,6 +1154,8 @@ def : InstAlias<"syscall", (SYSCALL 0), 1>;
 
 def : InstAlias<"break $imm", (BREAK uimm10:$imm, 0), 1>;
 def : InstAlias<"break", (BREAK 0, 0), 1>;
+def : InstAlias<"ei", (EI ZERO), 1>;
+def : InstAlias<"di", (DI ZERO), 1>;
 //===----------------------------------------------------------------------===//
 // Assembler Pseudo Instructions
 //===----------------------------------------------------------------------===//

diff --git a/test/MC/Mips/mips-control-instructions.s b/test/MC/Mips/mips-control-instructions.s
index ee709402af9af28b444ca34db80494263c244c2c..90d479db86c0bb500f59449521c08673c38d4ad8 100644 (file)
--- a/test/MC/Mips/mips-control-instructions.s
+++ b/test/MC/Mips/mips-control-instructions.s
@@ -10,6 +10,12 @@
 # CHECK32:    syscall 13396              # encoding: [0x00,0x0d,0x15,0x0c]
 # CHECK32:    eret                       # encoding: [0x42,0x00,0x00,0x18]
 # CHECK32:    deret                      # encoding: [0x42,0x00,0x00,0x1f]
+# CHECK32:    di                         # encoding: [0x41,0x60,0x60,0x00]
+# CHECK32:    di                         # encoding: [0x41,0x60,0x60,0x00]
+# CHECK32:    di      $10                # encoding: [0x41,0x6a,0x60,0x00]
+# CHECK32:    ei                         # encoding: [0x41,0x60,0x60,0x20]
+# CHECK32:    ei                         # encoding: [0x41,0x60,0x60,0x20]
+# CHECK32:    ei      $10                # encoding: [0x41,0x6a,0x60,0x20]
 
 # CHECK64:    break                      # encoding: [0x00,0x00,0x00,0x0d]
 # CHECK64:    break   7, 0               # encoding: [0x00,0x07,0x00,0x0d]
@@ -18,7 +24,12 @@
 # CHECK64:    syscall 13396              # encoding: [0x00,0x0d,0x15,0x0c]
 # CHECK64:    eret                       # encoding: [0x42,0x00,0x00,0x18]
 # CHECK64:    deret                      # encoding: [0x42,0x00,0x00,0x1f]
-
+# CHECK64:    di                         # encoding: [0x41,0x60,0x60,0x00]
+# CHECK64:    di                         # encoding: [0x41,0x60,0x60,0x00]
+# CHECK64:    di      $10                # encoding: [0x41,0x6a,0x60,0x00]
+# CHECK64:    ei                         # encoding: [0x41,0x60,0x60,0x20]
+# CHECK64:    ei                         # encoding: [0x41,0x60,0x60,0x20]
+# CHECK64:    ei      $10                # encoding: [0x41,0x6a,0x60,0x20]
     break
     break 7
     break 7,5
@@ -26,3 +37,10 @@
     syscall 0x3454
     eret
     deret
+    di
+    di  $0
+    di  $10
+
+    ei
+    ei  $0
+    ei  $10