| Line 1079... |
Line 1079... |
`MEMNDX:
|
`MEMNDX:
|
if (instr[7:6]==2'b00)
|
if (instr[7:6]==2'b00)
|
case(instr[`INSTRUCTION_S2])
|
case(instr[`INSTRUCTION_S2])
|
`LVX,
|
`LVX,
|
`LBX,`LBUX,`LCX,`LCUX,
|
`LBX,`LBUX,`LCX,`LCUX,
|
|
`LVBX,`LVBUX,`LVCX,`LVCUX,`LVHX,`LVHUX,`LVWX,
|
`LHX,`LHUX,`LWX,`LWRX,`SBX,`SCX,`SHX,`SWX,`SWCX:
|
`LHX,`LHUX,`LWX,`LWRX,`SBX,`SCX,`SHX,`SWX,`SWCX:
|
if (BIG) begin
|
if (BIG) begin
|
o[63:0] = a + (b << instr[24:23]);
|
o[63:0] = a + (b << instr[24:23]);
|
end
|
end
|
else
|
else
|
| Line 1130... |
Line 1131... |
`MULI: o[63:0] = prod[DBW-1:0];
|
`MULI: o[63:0] = prod[DBW-1:0];
|
`DIVUI: o[63:0] = BIG ? divq : 64'hCCCCCCCCCCCCCCCC;
|
`DIVUI: o[63:0] = BIG ? divq : 64'hCCCCCCCCCCCCCCCC;
|
`DIVI: o[63:0] = BIG ? divq : 64'hCCCCCCCCCCCCCCCC;
|
`DIVI: o[63:0] = BIG ? divq : 64'hCCCCCCCCCCCCCCCC;
|
`MODI: o[63:0] = BIG ? rem : 64'hCCCCCCCCCCCCCCCC;
|
`MODI: o[63:0] = BIG ? rem : 64'hCCCCCCCCCCCCCCCC;
|
`LB,`LBU,`SB: o[63:0] = a + b;
|
`LB,`LBU,`SB: o[63:0] = a + b;
|
`Lx,`LxU,`Sx:
|
`Lx,`LxU,`Sx,`LVx:
|
begin
|
begin
|
o[63:0] = a + b;
|
|
casez(b[2:0])
|
casez(b[2:0])
|
3'b100: o[2:0] = 3'd0; // LW / SW
|
3'b100: o = a + {b[63:3],3'b0}; // LW / SW
|
3'b?10: o[1:0] = 2'd0; // LH / LHU / SH
|
3'b?10: o = a + {b[63:2],2'b0}; // LH / LHU / SH
|
3'b??1: o[0] = 1'd0; // LC / LCU / SC
|
default: o = a + {b[63:1],1'b0}; // LC / LCU / SC
|
endcase
|
endcase
|
end
|
end
|
`LWR,`SWC,`CAS:
|
`LWR,`SWC,`CAS:
|
begin
|
begin
|
o[63:0] = a + b;
|
o[63:0] = a + b;
|
end
|
end
|
`LVx: begin
|
|
o[63:0] = a + (instr[6] ? sxb26 : sxb10);
|
|
end
|
|
`LV,`SV: begin
|
`LV,`SV: begin
|
o[63:0] = a + b + {ven,3'b0};
|
o[63:0] = a + b + {ven,3'b0};
|
end
|
end
|
`CSRRW: case(instr[27:18])
|
`CSRRW: case(instr[27:18])
|
10'h044: o[63:0] = BIG ? csr | {thrd,24'h0} : 64'hDDDDDDDDDDDDDDDD;
|
10'h044: o[63:0] = BIG ? csr | {thrd,24'h0} : 64'hDDDDDDDDDDDDDDDD;
|
| Line 1260... |
Line 1257... |
case(instr[`INSTRUCTION_OP])
|
case(instr[`INSTRUCTION_OP])
|
`R2:
|
`R2:
|
case(instr[`INSTRUCTION_S2])
|
case(instr[`INSTRUCTION_S2])
|
`ADD: exc <= (fnOverflow(0,a[63],b[63],o[63]) & excen[0] & instr[24]) ? `FLT_OFL : `FLT_NONE;
|
`ADD: exc <= (fnOverflow(0,a[63],b[63],o[63]) & excen[0] & instr[24]) ? `FLT_OFL : `FLT_NONE;
|
`SUB: exc <= (fnOverflow(1,a[63],b[63],o[63]) & excen[1] & instr[24]) ? `FLT_OFL : `FLT_NONE;
|
`SUB: exc <= (fnOverflow(1,a[63],b[63],o[63]) & excen[1] & instr[24]) ? `FLT_OFL : `FLT_NONE;
|
`ASL,`ASLI: exc <= (BIG & aslo & excen[2]) ? `FLT_OFL : `FLT_NONE;
|
// `ASL,`ASLI: exc <= (BIG & aslo & excen[2]) ? `FLT_OFL : `FLT_NONE;
|
`MUL,`MULSU: exc <= prod[63] ? (prod[127:64] != 64'hFFFFFFFFFFFFFFFF && excen[3] ? `FLT_OFL : `FLT_NONE ):
|
`MUL,`MULSU: exc <= prod[63] ? (prod[127:64] != 64'hFFFFFFFFFFFFFFFF && excen[3] ? `FLT_OFL : `FLT_NONE ):
|
(prod[127:64] != 64'd0 && excen[3] ? `FLT_OFL : `FLT_NONE);
|
(prod[127:64] != 64'd0 && excen[3] ? `FLT_OFL : `FLT_NONE);
|
`MULU: exc <= prod[127:64] != 64'd0 && excen[3] ? `FLT_OFL : `FLT_NONE;
|
`MULU: exc <= prod[127:64] != 64'd0 && excen[3] ? `FLT_OFL : `FLT_NONE;
|
`DIV,`DIVSU,`DIVU: exc <= BIG && excen[4] & divByZero ? `FLT_DBZ : `FLT_NONE;
|
`DIV,`DIVSU,`DIVU: exc <= BIG && excen[4] & divByZero ? `FLT_DBZ : `FLT_NONE;
|
`MOD,`MODSU,`MODU: exc <= BIG && excen[4] & divByZero ? `FLT_DBZ : `FLT_NONE;
|
`MOD,`MODSU,`MODU: exc <= BIG && excen[4] & divByZero ? `FLT_DBZ : `FLT_NONE;
|
