operands.isa revision 4098:9b57d3d6af2a 
1// Copyright (c) 2006-2007 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright
9// notice, this list of conditions and the following disclaimer in the
10// documentation and/or other materials provided with the distribution;
11// neither the name of the copyright holders nor the names of its
12// contributors may be used to endorse or promote products derived from
13// this software without specific prior written permission.
14//
15// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26//
27// Authors: Ali Saidi
28//          Gabe Black
29//          Steve Reinhardt
30
31def operand_types {{
32    'sb' : ('signed int', 8),
33    'ub' : ('unsigned int', 8),
34    'shw' : ('signed int', 16),
35    'uhw' : ('unsigned int', 16),
36    'sw' : ('signed int', 32),
37    'uw' : ('unsigned int', 32),
38    'sdw' : ('signed int', 64),
39    'udw' : ('unsigned int', 64),
40    'tudw' : ('twin int', 64),
41    'sf' : ('float', 32),
42    'df' : ('float', 64),
43    'qf' : ('float', 128)
44}};
45
46output header {{
47    // A function to "decompress" double and quad floating point
48    // register numbers stuffed into 5 bit fields. These have their
49    // MSB put in the LSB position but are otherwise normal.
50    static inline unsigned int dfpr(unsigned int regNum)
51    {
52        return (regNum & (~1)) | ((regNum & 1) << 5);
53    }
54}};
55
56def operands {{
57    # Int regs default to unsigned, but code should not count on this.
58    # For clarity, descriptions that depend on unsigned behavior should
59    # explicitly specify '.uq'.
60
61    'Rd': 		('IntReg', 'udw', 'RD', 'IsInteger', 1),
62    # The Rd from the previous window
63    'Rd_prev':		('IntReg', 'udw', 'RD + NumIntArchRegs + NumMicroIntRegs', 'IsInteger', 2),
64    # The Rd from the next window
65    'Rd_next':		('IntReg', 'udw', 'RD + 2 * NumIntArchRegs + NumMicroIntRegs', 'IsInteger', 3),
66    # For microcoded twin load instructions, RdTwin appears in the "code"
67    # for the instruction is replaced by RdLow or RdHigh by the format
68    # before it's processed by the iop.
69    # The low (even) register of a two register pair
70    'RdLow': 		('IntReg', 'udw', 'RD & (~1)', 'IsInteger', 4),
71    # The high (odd) register of a two register pair
72    'RdHigh':		('IntReg', 'udw', 'RD | 1', 'IsInteger', 5),
73    'Rs1': 		('IntReg', 'udw', 'RS1', 'IsInteger', 6),
74    'Rs2': 		('IntReg', 'udw', 'RS2', 'IsInteger', 7),
75    # A microcode register. Right now, this is the only one.
76    'uReg0':		('IntReg', 'udw', 'NumIntArchRegs', 'IsInteger', 8),
77    # Because double and quad precision register numbers are decoded
78    # differently, they get different operands. The single precision versions
79    # have an s post pended to their name.
80    'Frds':		('FloatReg', 'sf', 'RD', 'IsFloating', 10),
81    'Frd':		('FloatReg', 'df', 'dfpr(RD)', 'IsFloating', 10),
82    # Each Frd_N refers to the Nth double precision register from Frd.
83    # Note that this adds twice N to the register number.
84    'Frd_0':		('FloatReg', 'df', 'dfpr(RD)', 'IsFloating', 10),
85    'Frd_1':		('FloatReg', 'df', 'dfpr(RD) + 2', 'IsFloating', 10),
86    'Frd_2':		('FloatReg', 'df', 'dfpr(RD) + 4', 'IsFloating', 10),
87    'Frd_3':		('FloatReg', 'df', 'dfpr(RD) + 6', 'IsFloating', 10),
88    'Frd_4':		('FloatReg', 'df', 'dfpr(RD) + 8', 'IsFloating', 10),
89    'Frd_5':		('FloatReg', 'df', 'dfpr(RD) + 10', 'IsFloating', 10),
90    'Frd_6':		('FloatReg', 'df', 'dfpr(RD) + 12', 'IsFloating', 10),
91    'Frd_7':		('FloatReg', 'df', 'dfpr(RD) + 14', 'IsFloating', 10),
92    'Frs1s':		('FloatReg', 'sf', 'RS1', 'IsFloating', 11),
93    'Frs1':		('FloatReg', 'df', 'dfpr(RS1)', 'IsFloating', 11),
94    'Frs2s':		('FloatReg', 'sf', 'RS2', 'IsFloating', 12),
95    'Frs2':		('FloatReg', 'df', 'dfpr(RS2)', 'IsFloating', 12),
96    'NPC': 		('NPC', 'udw', None, ( None, None, 'IsControl' ), 31),
97    'NNPC':		('NNPC', 'udw', None, (None, None, 'IsControl' ), 32),
98    # Registers which are used explicitly in instructions
99    'R0':  		('IntReg', 'udw', '0', None, 6),
100    'R1':  		('IntReg', 'udw', '1', None, 7),
101    'R15': 		('IntReg', 'udw', '15', 'IsInteger', 8),
102    'R16': 		('IntReg', 'udw', '16', None, 9),
103    'O0':               ('IntReg', 'udw', '8', 'IsInteger', 10),
104    'O1':               ('IntReg', 'udw', '9', 'IsInteger', 11),
105    'O2':               ('IntReg', 'udw', '10', 'IsInteger', 12),
106    'O3':               ('IntReg', 'udw', '11', 'IsInteger', 13),
107    'O4':               ('IntReg', 'udw', '12', 'IsInteger', 14),
108    'O5':               ('IntReg', 'udw', '13', 'IsInteger', 15),
109
110    # Control registers
111#   'Y':		('ControlReg', 'udw', 'MISCREG_Y', None, 40),
112#   'Ccr':		('ControlReg', 'udw', 'MISCREG_CCR', None, 41),
113    'Y':		('IntReg', 'udw', 'NumIntArchRegs + 1', None, 40),
114    'Ccr':		('IntReg', 'udw', 'NumIntArchRegs + 2', None, 41),
115    'Asi':		('ControlReg', 'udw', 'MISCREG_ASI', None, 42),
116    'Fprs':		('ControlReg', 'udw', 'MISCREG_FPRS', None, 43),
117    'Pcr':		('ControlReg', 'udw', 'MISCREG_PCR', None, 44),
118    'Pic':		('ControlReg', 'udw', 'MISCREG_PIC', None, 45),
119    'Gsr':		('ControlReg', 'udw', 'MISCREG_GSR', None, 46),
120    'Softint':		('ControlReg', 'udw', 'MISCREG_SOFTINT', None, 47),
121    'SoftintSet':	('ControlReg', 'udw', 'MISCREG_SOFTINT_SET', None, 48),
122    'SoftintClr':	('ControlReg', 'udw', 'MISCREG_SOFTINT_CLR', None, 49),
123    'TickCmpr':		('ControlReg', 'udw', 'MISCREG_TICK_CMPR', None, 50),
124    'Stick':		('ControlReg', 'udw', 'MISCREG_STICK', None, 51),
125    'StickCmpr':	('ControlReg', 'udw', 'MISCREG_STICK_CMPR', None, 52),
126
127    'Tpc':		('ControlReg', 'udw', 'MISCREG_TPC', None, 53),
128    'Tnpc':		('ControlReg', 'udw', 'MISCREG_TNPC', None, 54),
129    'Tstate':		('ControlReg', 'udw', 'MISCREG_TSTATE', None, 55),
130    'Tt':		('ControlReg', 'udw', 'MISCREG_TT', None, 56),
131    'Tick':		('ControlReg', 'udw', 'MISCREG_TICK', None, 57),
132    'Tba':		('ControlReg', 'udw', 'MISCREG_TBA', None, 58),
133    'Pstate':		('ControlReg', 'udw', 'MISCREG_PSTATE', None, 59),
134    'Tl':		('ControlReg', 'udw', 'MISCREG_TL', None, 60),
135    'Pil':		('ControlReg', 'udw', 'MISCREG_PIL', None, 61),
136    'Cwp':		('ControlReg', 'udw', 'MISCREG_CWP', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 62),
137#   'Cansave':		('ControlReg', 'udw', 'MISCREG_CANSAVE', None, 63),
138#   'Canrestore':	('ControlReg', 'udw', 'MISCREG_CANRESTORE', None, 64),
139#   'Cleanwin':		('ControlReg', 'udw', 'MISCREG_CLEANWIN', None, 65),
140#   'Otherwin':		('ControlReg', 'udw', 'MISCREG_OTHERWIN', None, 66),
141#   'Wstate':		('ControlReg', 'udw', 'MISCREG_WSTATE', None, 67),
142    'Cansave':		('IntReg', 'udw', 'NumIntArchRegs + 3', None, 63),
143    'Canrestore':	('IntReg', 'udw', 'NumIntArchRegs + 4', None, 64),
144    'Cleanwin':		('IntReg', 'udw', 'NumIntArchRegs + 5', None, 65),
145    'Otherwin':		('IntReg', 'udw', 'NumIntArchRegs + 6', None, 66),
146    'Wstate':		('IntReg', 'udw', 'NumIntArchRegs + 7', None, 67),
147    'Gl':               ('ControlReg', 'udw', 'MISCREG_GL', None, 68),
148
149    'Hpstate':		('ControlReg', 'udw', 'MISCREG_HPSTATE', None, 69),
150    'Htstate':		('ControlReg', 'udw', 'MISCREG_HTSTATE', None, 70),
151    'Hintp':		('ControlReg', 'udw', 'MISCREG_HINTP', None, 71),
152    'Htba':		('ControlReg', 'udw', 'MISCREG_HTBA', None, 72),
153    'HstickCmpr':	('ControlReg', 'udw', 'MISCREG_HSTICK_CMPR', None, 73),
154    'Hver':		('ControlReg', 'udw', 'MISCREG_HVER', None, 74),
155    'StrandStsReg':	('ControlReg', 'udw', 'MISCREG_STRAND_STS_REG', None, 75),
156
157    'Fsr':		('ControlReg', 'udw', 'MISCREG_FSR', None, 80),
158    # Mem gets a large number so it's always last
159    'Mem': 		('Mem', 'udw', None, ('IsMemRef', 'IsLoad', 'IsStore'), 100)
160
161}};
162