URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [mips/] [smartmips.igen] - Blame information for rev 258

Go to most recent revision | Details | Compare with Previous | View Log


// -*- C -*-
//
// Simulator definition for the SmartMIPS extensions.
// Copyright (C) 2005, 2010 Free Software Foundation, Inc.
// Contributed by Nigel Stephens (nigel@mips.com) and
//                David Ung (davidu@mips.com) of MIPS Technologies.
//
// This file is part of GDB, the GNU debugger.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see .
 
011100,5.BASE,5.INDEX,5.RD,00010,001000:SPECIAL:32::LWXS
"lwxs r, (r)"
*smartmips:
{
  GPR[RD] = EXTEND32 (do_load(SD_, AccessLength_WORD, GPR[BASE], GPR[INDEX]<<2));
}
 
011100,5.RS,5.RT,00000,10001,000001:SPECIAL:32::MADDP
"maddp r, r"
*smartmips:
{
  unsigned64 res;
  unsigned64 rs, rt;
  int i;
 
  check_mult_hilo (SD_, HIHISTORY, LOHISTORY);
  TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]);
 
  res = 0;
  rs = GPR[RS];
  rt = GPR[RT];
  for (i = 0; i < 32; i++)
  {
      if (rs & 1)
          res ^= rt;
      rs >>= 1;
      rt <<= 1;
  }
  LO ^= EXTEND32 (VL4_8 (res));
  HI ^= EXTEND32 (VH4_8 (res));
  TRACE_ALU_RESULT2 (HI, LO);
}
 
 
000000,0000000000,5.RD,00001,010010:SPECIAL:32::MFLHXU
"mflhxu r"
*smartmips:
{
  check_mf_hilo (SD_, HIHISTORY, LOHISTORY);
  TRACE_ALU_INPUT3 (ACX,HI,LO);
  GPR[RD] = LO;
  LO = HI;
  HI = ACX;
  ACX = 0;
  TRACE_ALU_RESULT4 (ACX,HI,LO,GPR[RD]);
}
 
000000,5.RS,000000000000001,010011:SPECIAL:32::MTLHX
"mtlhx r"
*smartmips:
{
  check_mf_hilo (SD_, HIHISTORY, LOHISTORY);
  TRACE_ALU_INPUT3 (HI,LO,GPR[RS]);
  ACX = HI;
  HI = LO;
  LO = GPR[RS];
  TRACE_ALU_RESULT4 (ACX,HI,LO,GPR[RS]);
}
 
000000,5.RS,5.RT,00000,10001,011001:SPECIAL:32::MULTP
"multp r, r"
*smartmips:
{
  unsigned64 res;
  unsigned64 rs, rt;
  int i;
  check_mult_hilo (SD_, HIHISTORY, LOHISTORY);
  TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]);
 
  res = 0;
  rs = GPR[RS];
  rt = GPR[RT];
  for (i = 0; i < 32; i++)
  {
      if (rs & 1)
          res ^= rt;
      rs >>= 1;
      rt <<= 1;
  }
  LO = EXTEND32 (VL4_8 (res));
  HI = EXTEND32 (VH4_8 (res));
  ACX = 0;
  TRACE_ALU_RESULT2 (HI, LO);
}
 
011100,5.RS,5.RT,00000,10010,000001:SPECIAL:32::PPERM
"pperm r, r"
*smartmips:
{
  int i;
  ACX = (ACX << 6) | MSEXTRACTED(HI,26,31);
  HI = EXTEND32 ((HI << 6) | MSEXTRACTED(LO,26,31));
  LO = EXTEND32 (LO << 6);
  for (i = 0; i < 6; i++) {
    int sbit = 5*i;
    int ebit = sbit + 4;
    int tbit = EXTRACTED(GPR[RT],sbit,ebit);
    LO |= MSEXTRACTED(GPR[RS],tbit,tbit) << i;
  }
}

Line No.	Rev	Author	Line
1	227	jeremybenn	`// -- C --`
2			`//`
3			`// Simulator definition for the SmartMIPS extensions.`
4			`// Copyright (C) 2005, 2010 Free Software Foundation, Inc.`
5			`// Contributed by Nigel Stephens (nigel@mips.com) and`
6			`// David Ung (davidu@mips.com) of MIPS Technologies.`
7			`//`
8			`// This file is part of GDB, the GNU debugger.`
9			`//`
10			`// This program is free software; you can redistribute it and/or modify`
11			`// it under the terms of the GNU General Public License as published by`
12			`// the Free Software Foundation; either version 3 of the License, or`
13			`// (at your option) any later version.`
14			`//`
15			`// This program is distributed in the hope that it will be useful,`
16			`// but WITHOUT ANY WARRANTY; without even the implied warranty of`
17			`// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
18			`// GNU General Public License for more details.`
19			`//`
20			`// You should have received a copy of the GNU General Public License`
21			`// along with this program. If not, see .`
22
23			`011100,5.BASE,5.INDEX,5.RD,00010,001000:SPECIAL:32::LWXS`
24			`"lwxs r, (r)"`
25			`*smartmips:`
26			`{`
27			`GPR[RD] = EXTEND32 (do_load(SD_, AccessLength_WORD, GPR[BASE], GPR[INDEX]<<2));`
28			`}`
29
30			`011100,5.RS,5.RT,00000,10001,000001:SPECIAL:32::MADDP`
31			`"maddp r, r"`
32			`*smartmips:`
33			`{`
34			`unsigned64 res;`
35			`unsigned64 rs, rt;`
36			`int i;`
37
38			`check_mult_hilo (SD_, HIHISTORY, LOHISTORY);`
39			`TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]);`
40
41			`res = 0;`
42			`rs = GPR[RS];`
43			`rt = GPR[RT];`
44			`for (i = 0; i < 32; i++)`
45			`{`
46			`if (rs & 1)`
47			`res ^= rt;`
48			`rs >>= 1;`
49			`rt <<= 1;`
50			`}`
51			`LO ^= EXTEND32 (VL4_8 (res));`
52			`HI ^= EXTEND32 (VH4_8 (res));`
53			`TRACE_ALU_RESULT2 (HI, LO);`
54			`}`
55
56
57			`000000,0000000000,5.RD,00001,010010:SPECIAL:32::MFLHXU`
58			`"mflhxu r"`
59			`*smartmips:`
60			`{`
61			`check_mf_hilo (SD_, HIHISTORY, LOHISTORY);`
62			`TRACE_ALU_INPUT3 (ACX,HI,LO);`
63			`GPR[RD] = LO;`
64			`LO = HI;`
65			`HI = ACX;`
66			`ACX = 0;`
67			`TRACE_ALU_RESULT4 (ACX,HI,LO,GPR[RD]);`
68			`}`
69
70			`000000,5.RS,000000000000001,010011:SPECIAL:32::MTLHX`
71			`"mtlhx r"`
72			`*smartmips:`
73			`{`
74			`check_mf_hilo (SD_, HIHISTORY, LOHISTORY);`
75			`TRACE_ALU_INPUT3 (HI,LO,GPR[RS]);`
76			`ACX = HI;`
77			`HI = LO;`
78			`LO = GPR[RS];`
79			`TRACE_ALU_RESULT4 (ACX,HI,LO,GPR[RS]);`
80			`}`
81
82			`000000,5.RS,5.RT,00000,10001,011001:SPECIAL:32::MULTP`
83			`"multp r, r"`
84			`*smartmips:`
85			`{`
86			`unsigned64 res;`
87			`unsigned64 rs, rt;`
88			`int i;`
89			`check_mult_hilo (SD_, HIHISTORY, LOHISTORY);`
90			`TRACE_ALU_INPUT2 (GPR[RS], GPR[RT]);`
91
92			`res = 0;`
93			`rs = GPR[RS];`
94			`rt = GPR[RT];`
95			`for (i = 0; i < 32; i++)`
96			`{`
97			`if (rs & 1)`
98			`res ^= rt;`
99			`rs >>= 1;`
100			`rt <<= 1;`
101			`}`
102			`LO = EXTEND32 (VL4_8 (res));`
103			`HI = EXTEND32 (VH4_8 (res));`
104			`ACX = 0;`
105			`TRACE_ALU_RESULT2 (HI, LO);`
106			`}`
107
108			`011100,5.RS,5.RT,00000,10010,000001:SPECIAL:32::PPERM`
109			`"pperm r, r"`
110			`*smartmips:`
111			`{`
112			`int i;`
113			`ACX = (ACX << 6) \| MSEXTRACTED(HI,26,31);`
114			`HI = EXTEND32 ((HI << 6) \| MSEXTRACTED(LO,26,31));`
115			`LO = EXTEND32 (LO << 6);`
116			`for (i = 0; i < 6; i++) {`
117			`int sbit = 5*i;`
118			`int ebit = sbit + 4;`
119			`int tbit = EXTRACTED(GPR[RT],sbit,ebit);`
120			`LO \|= MSEXTRACTED(GPR[RS],tbit,tbit) << i;`
121			`}`
122			`}`

Browse

Tools

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [sim/] [mips/] [smartmips.igen] - Blame information for rev 258