1# Copyright (c) 2009 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: Gabe Black
28
29microcode = '''
30def macroop CLTS {
31    rdcr t1, regIdx(0), dataSize=8
32    andi t1, t1, 0xF7, dataSize=1
33    wrcr regIdx(0), t1, dataSize=8
34};
35
36def macroop LMSW_R {
37    rdcr t1, regIdx(0), dataSize=8
38    # This logic sets MP, EM, and TS to whatever is in the operand. It will
39    # set PE but not clear it.
40    limm t2, "~ULL(0xe)", dataSize=8
41    and t1, t1, t2, dataSize=8
42    andi t2, reg, 0xf, dataSize=8
43    or t1, t1, t2, dataSize=8
44    wrcr regIdx(0), t1, dataSize=8
45};
46
47def macroop LMSW_M {
48    ld t3, seg, sib, disp, dataSize=2
49    rdcr t1, regIdx(0), dataSize=8
50    # This logic sets MP, EM, and TS to whatever is in the operand. It will
51    # set PE but not clear it.
52    limm t2, "~ULL(0xe)", dataSize=8
53    and t1, t1, t2, dataSize=8
54    andi t2, t3, 0xf, dataSize=8
55    or t1, t1, t2, dataSize=8
56    wrcr regIdx(0), t1, dataSize=8
57};
58
59def macroop LMSW_P {
60    rdip t7, dataSize=asz
61    ld t3, seg, riprel, disp, dataSize=2
62    rdcr t1, regIdx(0), dataSize=8
63    # This logic sets MP, EM, and TS to whatever is in the operand. It will
64    # set PE but not clear it.
65    limm t2, "~ULL(0xe)", dataSize=8
66    and t1, t1, t2, dataSize=8
67    andi t2, t3, 0xf, dataSize=8
68    or t1, t1, t2, dataSize=8
69    wrcr regIdx(0), t1, dataSize=8
70};
71
72def macroop SMSW_R {
73    rdcr reg, regIdx(0)
74};
75
76def macroop SMSW_M {
77    rdcr t1, regIdx(0)
78    st t1, seg, sib, disp, dataSize=2
79};
80
81def macroop SMSW_P {
82    rdcr t1, regIdx(0)
83    rdip t7, dataSize=asz
84    st t1, seg, riprel, disp, dataSize=2
85};
86'''
87