MIPS: Add rounding support in simulator and RINT instruction.

src/mips64/constants-mips64.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef  V8_MIPS_CONSTANTS_H_
 #define  V8_MIPS_CONSTANTS_H_
 
 // UNIMPLEMENTED_ macro for MIPS.
 #ifdef DEBUG
 #define UNIMPLEMENTED_MIPS()                                                  \
@@ skipping 328 matching lines @@
   SCD       =   ((7 << 3) + 4) << kOpcodeShift,
   SDC1      =   ((7 << 3) + 5) << kOpcodeShift,
   BNEZC     =   ((7 << 3) + 6) << kOpcodeShift,
   SD        =   ((7 << 3) + 7) << kOpcodeShift,
 
   COP1X     =   ((1 << 4) + 3) << kOpcodeShift
 };
 
 enum SecondaryField {
   // SPECIAL Encoding of Function Field.
-  SLL       =   ((0 << 3) + 0),
-  MOVCI     =   ((0 << 3) + 1),
-  SRL       =   ((0 << 3) + 2),
-  SRA       =   ((0 << 3) + 3),
-  SLLV      =   ((0 << 3) + 4),
-  SRLV      =   ((0 << 3) + 6),
-  SRAV      =   ((0 << 3) + 7),
-
-  JR        =   ((1 << 3) + 0),
-  JALR      =   ((1 << 3) + 1),
-  MOVZ      =   ((1 << 3) + 2),
-  MOVN      =   ((1 << 3) + 3),
-  BREAK     =   ((1 << 3) + 5),
-
-  MFHI      =   ((2 << 3) + 0),
-  CLZ_R6    =   ((2 << 3) + 0),
-  CLO_R6    =   ((2 << 3) + 1),
-  MFLO      =   ((2 << 3) + 2),
-  DSLLV     =   ((2 << 3) + 4),
-  DSRLV     =   ((2 << 3) + 6),
-  DSRAV     =   ((2 << 3) + 7),
-
-  MULT      =   ((3 << 3) + 0),
-  MULTU     =   ((3 << 3) + 1),
-  DIV       =   ((3 << 3) + 2),
-  DIVU      =   ((3 << 3) + 3),
-  DMULT     =   ((3 << 3) + 4),
-  DMULTU    =   ((3 << 3) + 5),
-  DDIV      =   ((3 << 3) + 6),
-  DDIVU     =   ((3 << 3) + 7),
-
-  ADD       =   ((4 << 3) + 0),
-  ADDU      =   ((4 << 3) + 1),
-  SUB       =   ((4 << 3) + 2),
-  SUBU      =   ((4 << 3) + 3),
-  AND       =   ((4 << 3) + 4),
-  OR        =   ((4 << 3) + 5),
-  XOR       =   ((4 << 3) + 6),
-  NOR       =   ((4 << 3) + 7),
-
-  SLT       =   ((5 << 3) + 2),
-  SLTU      =   ((5 << 3) + 3),
-  DADD      =   ((5 << 3) + 4),
-  DADDU     =   ((5 << 3) + 5),
-  DSUB      =   ((5 << 3) + 6),
-  DSUBU     =   ((5 << 3) + 7),
-
-  TGE       =   ((6 << 3) + 0),
-  TGEU      =   ((6 << 3) + 1),
-  TLT       =   ((6 << 3) + 2),
-  TLTU      =   ((6 << 3) + 3),
-  TEQ       =   ((6 << 3) + 4),
-  SELEQZ_S  =   ((6 << 3) + 5),
-  TNE       =   ((6 << 3) + 6),
-  SELNEZ_S  =   ((6 << 3) + 7),
-
-  DSLL      =   ((7 << 3) + 0),
-  DSRL      =   ((7 << 3) + 2),
-  DSRA      =   ((7 << 3) + 3),
-  DSLL32    =   ((7 << 3) + 4),
-  DSRL32    =   ((7 << 3) + 6),
-  DSRA32    =   ((7 << 3) + 7),
+  SLL = ((0 << 3) + 0),
+  MOVCI = ((0 << 3) + 1),
+  SRL = ((0 << 3) + 2),
+  SRA = ((0 << 3) + 3),
+  SLLV = ((0 << 3) + 4),
+  SRLV = ((0 << 3) + 6),
+  SRAV = ((0 << 3) + 7),
+
+  JR = ((1 << 3) + 0),
+  JALR = ((1 << 3) + 1),
+  MOVZ = ((1 << 3) + 2),
+  MOVN = ((1 << 3) + 3),
+  BREAK = ((1 << 3) + 5),
+
+  MFHI = ((2 << 3) + 0),
+  CLZ_R6 = ((2 << 3) + 0),
+  CLO_R6 = ((2 << 3) + 1),
+  MFLO = ((2 << 3) + 2),
+  DSLLV = ((2 << 3) + 4),
+  DSRLV = ((2 << 3) + 6),
+  DSRAV = ((2 << 3) + 7),
+
+  MULT = ((3 << 3) + 0),
+  MULTU = ((3 << 3) + 1),
+  DIV = ((3 << 3) + 2),
+  DIVU = ((3 << 3) + 3),
+  DMULT = ((3 << 3) + 4),
+  DMULTU = ((3 << 3) + 5),
+  DDIV = ((3 << 3) + 6),
+  DDIVU = ((3 << 3) + 7),
+
+  ADD = ((4 << 3) + 0),
+  ADDU = ((4 << 3) + 1),
+  SUB = ((4 << 3) + 2),
+  SUBU = ((4 << 3) + 3),
+  AND = ((4 << 3) + 4),
+  OR = ((4 << 3) + 5),
+  XOR = ((4 << 3) + 6),
+  NOR = ((4 << 3) + 7),
+
+  SLT = ((5 << 3) + 2),
+  SLTU = ((5 << 3) + 3),
+  DADD = ((5 << 3) + 4),
+  DADDU = ((5 << 3) + 5),
+  DSUB = ((5 << 3) + 6),
+  DSUBU = ((5 << 3) + 7),
+
+  TGE = ((6 << 3) + 0),
+  TGEU = ((6 << 3) + 1),
+  TLT = ((6 << 3) + 2),
+  TLTU = ((6 << 3) + 3),
+  TEQ = ((6 << 3) + 4),
+  SELEQZ_S = ((6 << 3) + 5),
+  TNE = ((6 << 3) + 6),
+  SELNEZ_S = ((6 << 3) + 7),
+
+  DSLL = ((7 << 3) + 0),
+  DSRL = ((7 << 3) + 2),
+  DSRA = ((7 << 3) + 3),
+  DSLL32 = ((7 << 3) + 4),
+  DSRL32 = ((7 << 3) + 6),
+  DSRA32 = ((7 << 3) + 7),
 
   // Multiply integers in r6.
-  MUL_MUH   =   ((3 << 3) + 0),  // MUL, MUH.
-  MUL_MUH_U =   ((3 << 3) + 1),  // MUL_U, MUH_U.
-  D_MUL_MUH =   ((7 << 2) + 0),  // DMUL, DMUH.
+  MUL_MUH = ((3 << 3) + 0),      // MUL, MUH.
+  MUL_MUH_U = ((3 << 3) + 1),    // MUL_U, MUH_U.
+  D_MUL_MUH = ((7 << 2) + 0),    // DMUL, DMUH.
   D_MUL_MUH_U = ((7 << 2) + 1),  // DMUL_U, DMUH_U.
-
-  MUL_OP    =   ((0 << 3) + 2),
-  MUH_OP    =   ((0 << 3) + 3),
-  DIV_OP    =   ((0 << 3) + 2),
-  MOD_OP    =   ((0 << 3) + 3),
-
-  DIV_MOD   =   ((3 << 3) + 2),
-  DIV_MOD_U =   ((3 << 3) + 3),
-  D_DIV_MOD =   ((3 << 3) + 6),
+  RINT = ((3 << 3) + 2),
+
+  MUL_OP = ((0 << 3) + 2),
+  MUH_OP = ((0 << 3) + 3),
+  DIV_OP = ((0 << 3) + 2),
+  MOD_OP = ((0 << 3) + 3),
+
+  DIV_MOD = ((3 << 3) + 2),
+  DIV_MOD_U = ((3 << 3) + 3),
+  D_DIV_MOD = ((3 << 3) + 6),
   D_DIV_MOD_U = ((3 << 3) + 7),
 
   // drotr in special4?
 
   // SPECIAL2 Encoding of Function Field.
-  MUL       =   ((0 << 3) + 2),
-  CLZ       =   ((4 << 3) + 0),
-  CLO       =   ((4 << 3) + 1),
+  MUL = ((0 << 3) + 2),
+  CLZ = ((4 << 3) + 0),
+  CLO = ((4 << 3) + 1),
 
   // SPECIAL3 Encoding of Function Field.
-  EXT       =   ((0 << 3) + 0),
-  DEXTM     =   ((0 << 3) + 1),
-  DEXTU     =   ((0 << 3) + 2),
-  DEXT      =   ((0 << 3) + 3),
-  INS       =   ((0 << 3) + 4),
-  DINSM     =   ((0 << 3) + 5),
-  DINSU     =   ((0 << 3) + 6),
-  DINS      =   ((0 << 3) + 7),
-
-  DSBH      =   ((4 << 3) + 4),
+  EXT = ((0 << 3) + 0),
+  DEXTM = ((0 << 3) + 1),
+  DEXTU = ((0 << 3) + 2),
+  DEXT = ((0 << 3) + 3),
+  INS = ((0 << 3) + 4),
+  DINSM = ((0 << 3) + 5),
+  DINSU = ((0 << 3) + 6),
+  DINS = ((0 << 3) + 7),
+
+  DSBH = ((4 << 3) + 4),
 
   // REGIMM  encoding of rt Field.
-  BLTZ      =   ((0 << 3) + 0) << 16,
-  BGEZ      =   ((0 << 3) + 1) << 16,
-  BLTZAL    =   ((2 << 3) + 0) << 16,
-  BGEZAL    =   ((2 << 3) + 1) << 16,
-  BGEZALL   =   ((2 << 3) + 3) << 16,
-  DAHI      =   ((0 << 3) + 6) << 16,
-  DATI      =   ((3 << 3) + 6) << 16,
+  BLTZ = ((0 << 3) + 0) << 16,
+  BGEZ = ((0 << 3) + 1) << 16,
+  BLTZAL = ((2 << 3) + 0) << 16,
+  BGEZAL = ((2 << 3) + 1) << 16,
+  BGEZALL = ((2 << 3) + 3) << 16,
+  DAHI = ((0 << 3) + 6) << 16,
+  DATI = ((3 << 3) + 6) << 16,
 
   // COP1 Encoding of rs Field.
-  MFC1      =   ((0 << 3) + 0) << 21,
-  DMFC1     =   ((0 << 3) + 1) << 21,
-  CFC1      =   ((0 << 3) + 2) << 21,
-  MFHC1     =   ((0 << 3) + 3) << 21,
-  MTC1      =   ((0 << 3) + 4) << 21,
-  DMTC1     =   ((0 << 3) + 5) << 21,
-  CTC1      =   ((0 << 3) + 6) << 21,
-  MTHC1     =   ((0 << 3) + 7) << 21,
-  BC1       =   ((1 << 3) + 0) << 21,
-  S         =   ((2 << 3) + 0) << 21,
-  D         =   ((2 << 3) + 1) << 21,
-  W         =   ((2 << 3) + 4) << 21,
-  L         =   ((2 << 3) + 5) << 21,
-  PS        =   ((2 << 3) + 6) << 21,
+  MFC1 = ((0 << 3) + 0) << 21,
+  DMFC1 = ((0 << 3) + 1) << 21,
+  CFC1 = ((0 << 3) + 2) << 21,
+  MFHC1 = ((0 << 3) + 3) << 21,
+  MTC1 = ((0 << 3) + 4) << 21,
+  DMTC1 = ((0 << 3) + 5) << 21,
+  CTC1 = ((0 << 3) + 6) << 21,
+  MTHC1 = ((0 << 3) + 7) << 21,
+  BC1 = ((1 << 3) + 0) << 21,
+  S = ((2 << 3) + 0) << 21,
+  D = ((2 << 3) + 1) << 21,
+  W = ((2 << 3) + 4) << 21,
+  L = ((2 << 3) + 5) << 21,
+  PS = ((2 << 3) + 6) << 21,
   // COP1 Encoding of Function Field When rs=S.
-  ROUND_L_S =   ((1 << 3) + 0),
-  TRUNC_L_S =   ((1 << 3) + 1),
-  CEIL_L_S  =   ((1 << 3) + 2),
-  FLOOR_L_S =   ((1 << 3) + 3),
-  ROUND_W_S =   ((1 << 3) + 4),
-  TRUNC_W_S =   ((1 << 3) + 5),
-  CEIL_W_S  =   ((1 << 3) + 6),
-  FLOOR_W_S =   ((1 << 3) + 7),
-  CVT_D_S   =   ((4 << 3) + 1),
-  CVT_W_S   =   ((4 << 3) + 4),
-  CVT_L_S   =   ((4 << 3) + 5),
-  CVT_PS_S  =   ((4 << 3) + 6),
+  ROUND_L_S = ((1 << 3) + 0),
+  TRUNC_L_S = ((1 << 3) + 1),
+  CEIL_L_S = ((1 << 3) + 2),
+  FLOOR_L_S = ((1 << 3) + 3),
+  ROUND_W_S = ((1 << 3) + 4),
+  TRUNC_W_S = ((1 << 3) + 5),
+  CEIL_W_S = ((1 << 3) + 6),
+  FLOOR_W_S = ((1 << 3) + 7),
+  CVT_D_S = ((4 << 3) + 1),
+  CVT_W_S = ((4 << 3) + 4),
+  CVT_L_S = ((4 << 3) + 5),
+  CVT_PS_S = ((4 << 3) + 6),
   // COP1 Encoding of Function Field When rs=D.
-  ADD_D     =   ((0 << 3) + 0),
-  SUB_D     =   ((0 << 3) + 1),
-  MUL_D     =   ((0 << 3) + 2),
-  DIV_D     =   ((0 << 3) + 3),
-  SQRT_D    =   ((0 << 3) + 4),
-  ABS_D     =   ((0 << 3) + 5),
-  MOV_D     =   ((0 << 3) + 6),
-  NEG_D     =   ((0 << 3) + 7),
-  ROUND_L_D =   ((1 << 3) + 0),
-  TRUNC_L_D =   ((1 << 3) + 1),
-  CEIL_L_D  =   ((1 << 3) + 2),
-  FLOOR_L_D =   ((1 << 3) + 3),
-  ROUND_W_D =   ((1 << 3) + 4),
-  TRUNC_W_D =   ((1 << 3) + 5),
-  CEIL_W_D  =   ((1 << 3) + 6),
-  FLOOR_W_D =   ((1 << 3) + 7),
-  MIN       =   ((3 << 3) + 4),
-  MINA      =   ((3 << 3) + 5),
-  MAX       =   ((3 << 3) + 6),
-  MAXA      =   ((3 << 3) + 7),
-  CVT_S_D   =   ((4 << 3) + 0),
-  CVT_W_D   =   ((4 << 3) + 4),
-  CVT_L_D   =   ((4 << 3) + 5),
-  C_F_D     =   ((6 << 3) + 0),
-  C_UN_D    =   ((6 << 3) + 1),
-  C_EQ_D    =   ((6 << 3) + 2),
-  C_UEQ_D   =   ((6 << 3) + 3),
-  C_OLT_D   =   ((6 << 3) + 4),
-  C_ULT_D   =   ((6 << 3) + 5),
-  C_OLE_D   =   ((6 << 3) + 6),
-  C_ULE_D   =   ((6 << 3) + 7),
+  ADD_D = ((0 << 3) + 0),
+  SUB_D = ((0 << 3) + 1),
+  MUL_D = ((0 << 3) + 2),
+  DIV_D = ((0 << 3) + 3),
+  SQRT_D = ((0 << 3) + 4),
+  ABS_D = ((0 << 3) + 5),
+  MOV_D = ((0 << 3) + 6),
+  NEG_D = ((0 << 3) + 7),
+  ROUND_L_D = ((1 << 3) + 0),
+  TRUNC_L_D = ((1 << 3) + 1),
+  CEIL_L_D = ((1 << 3) + 2),
+  FLOOR_L_D = ((1 << 3) + 3),
+  ROUND_W_D = ((1 << 3) + 4),
+  TRUNC_W_D = ((1 << 3) + 5),
+  CEIL_W_D = ((1 << 3) + 6),
+  FLOOR_W_D = ((1 << 3) + 7),
+  MIN = ((3 << 3) + 4),
+  MINA = ((3 << 3) + 5),
+  MAX = ((3 << 3) + 6),
+  MAXA = ((3 << 3) + 7),
+  CVT_S_D = ((4 << 3) + 0),
+  CVT_W_D = ((4 << 3) + 4),
+  CVT_L_D = ((4 << 3) + 5),
+  C_F_D = ((6 << 3) + 0),
+  C_UN_D = ((6 << 3) + 1),
+  C_EQ_D = ((6 << 3) + 2),
+  C_UEQ_D = ((6 << 3) + 3),
+  C_OLT_D = ((6 << 3) + 4),
+  C_ULT_D = ((6 << 3) + 5),
+  C_OLE_D = ((6 << 3) + 6),
+  C_ULE_D = ((6 << 3) + 7),
   // COP1 Encoding of Function Field When rs=W or L.
-  CVT_S_W   =   ((4 << 3) + 0),
-  CVT_D_W   =   ((4 << 3) + 1),
-  CVT_S_L   =   ((4 << 3) + 0),
-  CVT_D_L   =   ((4 << 3) + 1),
-  BC1EQZ    =   ((2 << 2) + 1) << 21,
-  BC1NEZ    =   ((3 << 2) + 1) << 21,
+  CVT_S_W = ((4 << 3) + 0),
+  CVT_D_W = ((4 << 3) + 1),
+  CVT_S_L = ((4 << 3) + 0),
+  CVT_D_L = ((4 << 3) + 1),
+  BC1EQZ = ((2 << 2) + 1) << 21,
+  BC1NEZ = ((3 << 2) + 1) << 21,
   // COP1 CMP positive predicates Bit 5..4 = 00.
-  CMP_AF    =   ((0 << 3) + 0),
-  CMP_UN    =   ((0 << 3) + 1),
-  CMP_EQ    =   ((0 << 3) + 2),
-  CMP_UEQ   =   ((0 << 3) + 3),
-  CMP_LT    =   ((0 << 3) + 4),
-  CMP_ULT   =   ((0 << 3) + 5),
-  CMP_LE    =   ((0 << 3) + 6),
-  CMP_ULE   =   ((0 << 3) + 7),
-  CMP_SAF   =   ((1 << 3) + 0),
-  CMP_SUN   =   ((1 << 3) + 1),
-  CMP_SEQ   =   ((1 << 3) + 2),
-  CMP_SUEQ  =   ((1 << 3) + 3),
-  CMP_SSLT  =   ((1 << 3) + 4),
-  CMP_SSULT =   ((1 << 3) + 5),
-  CMP_SLE   =   ((1 << 3) + 6),
-  CMP_SULE  =   ((1 << 3) + 7),
+  CMP_AF = ((0 << 3) + 0),
+  CMP_UN = ((0 << 3) + 1),
+  CMP_EQ = ((0 << 3) + 2),
+  CMP_UEQ = ((0 << 3) + 3),
+  CMP_LT = ((0 << 3) + 4),
+  CMP_ULT = ((0 << 3) + 5),
+  CMP_LE = ((0 << 3) + 6),
+  CMP_ULE = ((0 << 3) + 7),
+  CMP_SAF = ((1 << 3) + 0),
+  CMP_SUN = ((1 << 3) + 1),
+  CMP_SEQ = ((1 << 3) + 2),
+  CMP_SUEQ = ((1 << 3) + 3),
+  CMP_SSLT = ((1 << 3) + 4),
+  CMP_SSULT = ((1 << 3) + 5),
+  CMP_SLE = ((1 << 3) + 6),
+  CMP_SULE = ((1 << 3) + 7),
   // COP1 CMP negative predicates Bit 5..4 = 01.
-  CMP_AT    =   ((2 << 3) + 0),  // Reserved, not implemented.
-  CMP_OR    =   ((2 << 3) + 1),
-  CMP_UNE   =   ((2 << 3) + 2),
-  CMP_NE    =   ((2 << 3) + 3),
-  CMP_UGE   =   ((2 << 3) + 4),  // Reserved, not implemented.
-  CMP_OGE   =   ((2 << 3) + 5),  // Reserved, not implemented.
-  CMP_UGT   =   ((2 << 3) + 6),  // Reserved, not implemented.
-  CMP_OGT   =   ((2 << 3) + 7),  // Reserved, not implemented.
-  CMP_SAT   =   ((3 << 3) + 0),  // Reserved, not implemented.
-  CMP_SOR   =   ((3 << 3) + 1),
-  CMP_SUNE  =   ((3 << 3) + 2),
-  CMP_SNE   =   ((3 << 3) + 3),
-  CMP_SUGE  =   ((3 << 3) + 4),  // Reserved, not implemented.
-  CMP_SOGE  =   ((3 << 3) + 5),  // Reserved, not implemented.
-  CMP_SUGT  =   ((3 << 3) + 6),  // Reserved, not implemented.
-  CMP_SOGT  =   ((3 << 3) + 7),  // Reserved, not implemented.
-
-  SEL       =   ((2 << 3) + 0),
-  SELEQZ_C  =   ((2 << 3) + 4),  // COP1 on FPR registers.
-  SELNEZ_C  =   ((2 << 3) + 7),  // COP1 on FPR registers.
+  CMP_AT = ((2 << 3) + 0),  // Reserved, not implemented.
+  CMP_OR = ((2 << 3) + 1),
+  CMP_UNE = ((2 << 3) + 2),
+  CMP_NE = ((2 << 3) + 3),
+  CMP_UGE = ((2 << 3) + 4),  // Reserved, not implemented.
+  CMP_OGE = ((2 << 3) + 5),  // Reserved, not implemented.
+  CMP_UGT = ((2 << 3) + 6),  // Reserved, not implemented.
+  CMP_OGT = ((2 << 3) + 7),  // Reserved, not implemented.
+  CMP_SAT = ((3 << 3) + 0),  // Reserved, not implemented.
+  CMP_SOR = ((3 << 3) + 1),
+  CMP_SUNE = ((3 << 3) + 2),
+  CMP_SNE = ((3 << 3) + 3),
+  CMP_SUGE = ((3 << 3) + 4),  // Reserved, not implemented.
+  CMP_SOGE = ((3 << 3) + 5),  // Reserved, not implemented.
+  CMP_SUGT = ((3 << 3) + 6),  // Reserved, not implemented.
+  CMP_SOGT = ((3 << 3) + 7),  // Reserved, not implemented.
+
+  SEL = ((2 << 3) + 0),
+  SELEQZ_C = ((2 << 3) + 4),  // COP1 on FPR registers.
+  SELNEZ_C = ((2 << 3) + 7),  // COP1 on FPR registers.
 
   // COP1 Encoding of Function Field When rs=PS.
   // COP1X Encoding of Function Field.
-  MADD_D    =   ((4 << 3) + 1),
-
-  NULLSF    =   0
+  MADD_D = ((4 << 3) + 1),
+
+  NULLSF = 0
 };
 
 
 // ----- Emulated conditions.
 // On MIPS we use this enum to abstract from conditional branch instructions.
 // The 'U' prefix is used to specify unsigned comparisons.
 // Opposite conditions must be paired as odd/even numbers
 // because 'NegateCondition' function flips LSB to negate condition.
 enum Condition {
   // Any value < 0 is considered no_condition.
@@ skipping 364 matching lines @@
 // TODO(plind): below should be based on kPointerSize
 // TODO(plind): find all usages and remove the needless instructions for n64.
 const int kCArgsSlotsSize = kCArgSlotCount * Instruction::kInstrSize * 2;
 
 const int kInvalidStackOffset = -1;
 const int kBranchReturnOffset = 2 * Instruction::kInstrSize;
 
 } }   // namespace v8::internal
 
 #endif    // #ifndef V8_MIPS_CONSTANTS_H_