1# Copyright (c) 2007 The Hewlett-Packard Development Company
2# All rights reserved.
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated
10# unmodified and in its entirety in all distributions of the software,
11# modified or unmodified, in source code or in binary form.
12#
13# Redistribution and use in source and binary forms, with or without
14# modification, are permitted provided that the following conditions are
15# met: redistributions of source code must retain the above copyright
16# notice, this list of conditions and the following disclaimer;
17# redistributions in binary form must reproduce the above copyright
18# notice, this list of conditions and the following disclaimer in the
19# documentation and/or other materials provided with the distribution;
20# neither the name of the copyright holders nor the names of its
21# contributors may be used to endorse or promote products derived from
22# this software without specific prior written permission.
23#
24# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35#
36# Authors: Gabe Black
37
38microcode = '''
39def macroop SYSCALL_64
40{
41 # All 1s.
42 limm t1, "(uint64_t)(-1)", dataSize=8
43
44 # Save the next RIP.
45 rdip rcx
46
47 # Stick rflags with RF masked into r11.
48 rflags t2
49 limm t3, "~RFBit", dataSize=8
50 and r11, t2, t3, dataSize=8
51
52 rdval t3, star
53 srli t3, t3, 32, dataSize=8
54 andi t3, t3, 0xFC, dataSize=1
55
56 # Set up CS.
57 wrsel cs, t3
58 wrbase cs, t0, dataSize=8
59 wrlimit cs, t1, dataSize=4
60 # Not writable, read/execute-able, not expandDown,
61 # dpl=0, defaultSize=0, long mode
62 limm t4, ((0 << 0) | (0 << 2) | (0 << 3) | \
63 (1 << 4) | (0 << 5) | (1 << 6) | \
64 (1 << 7) | (10 << 8) | (0 << 12) | \
65 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
66 wrattr cs, t4
67
68 # Set up SS.
69 addi t3, t3, 8
70 wrsel ss, t3
71 wrbase ss, t0, dataSize=8
72 wrlimit ss, t1, dataSize=4
73 # Writable, readable, not expandDown,
74 # dpl=0, defaultSize=0, not long mode
75 limm t4, ((0 << 0) | (0 << 2) | (1 << 3) | \
76 (0 << 4) | (0 << 5) | (1 << 6) | \
77 (1 << 7) | (2 << 8) | (1 << 12) | \
78 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
79 wrattr ss, t4
80
81 # Set the new rip.
| 1# Copyright (c) 2007 The Hewlett-Packard Development Company
2# All rights reserved.
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated
10# unmodified and in its entirety in all distributions of the software,
11# modified or unmodified, in source code or in binary form.
12#
13# Redistribution and use in source and binary forms, with or without
14# modification, are permitted provided that the following conditions are
15# met: redistributions of source code must retain the above copyright
16# notice, this list of conditions and the following disclaimer;
17# redistributions in binary form must reproduce the above copyright
18# notice, this list of conditions and the following disclaimer in the
19# documentation and/or other materials provided with the distribution;
20# neither the name of the copyright holders nor the names of its
21# contributors may be used to endorse or promote products derived from
22# this software without specific prior written permission.
23#
24# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35#
36# Authors: Gabe Black
37
38microcode = '''
39def macroop SYSCALL_64
40{
41 # All 1s.
42 limm t1, "(uint64_t)(-1)", dataSize=8
43
44 # Save the next RIP.
45 rdip rcx
46
47 # Stick rflags with RF masked into r11.
48 rflags t2
49 limm t3, "~RFBit", dataSize=8
50 and r11, t2, t3, dataSize=8
51
52 rdval t3, star
53 srli t3, t3, 32, dataSize=8
54 andi t3, t3, 0xFC, dataSize=1
55
56 # Set up CS.
57 wrsel cs, t3
58 wrbase cs, t0, dataSize=8
59 wrlimit cs, t1, dataSize=4
60 # Not writable, read/execute-able, not expandDown,
61 # dpl=0, defaultSize=0, long mode
62 limm t4, ((0 << 0) | (0 << 2) | (0 << 3) | \
63 (1 << 4) | (0 << 5) | (1 << 6) | \
64 (1 << 7) | (10 << 8) | (0 << 12) | \
65 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
66 wrattr cs, t4
67
68 # Set up SS.
69 addi t3, t3, 8
70 wrsel ss, t3
71 wrbase ss, t0, dataSize=8
72 wrlimit ss, t1, dataSize=4
73 # Writable, readable, not expandDown,
74 # dpl=0, defaultSize=0, not long mode
75 limm t4, ((0 << 0) | (0 << 2) | (1 << 3) | \
76 (0 << 4) | (0 << 5) | (1 << 6) | \
77 (1 << 7) | (2 << 8) | (1 << 12) | \
78 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
79 wrattr ss, t4
80
81 # Set the new rip.
|
84
85 # Mask the flags against sf_mask and leave RF turned off.
86 rdval t3, sf_mask, dataSize=8
87 xor t3, t3, t1, dataSize=8
88 and t3, t3, r11, dataSize=8
89 wrflags t3, t0
90};
91
92def macroop SYSCALL_COMPAT
93{
94 # All 1s.
95 limm t1, "(uint64_t)(-1)", dataSize=8
96
97 # Save the next RIP.
98 rdip rcx
99
100 # Stick rflags with RF masked into r11.
101 rflags t2
102 limm t3, "~RFBit", dataSize=8
103 and r11, t2, t3, dataSize=8
104
105 rdval t3, star
106 srli t3, t3, 32, dataSize=8
107 andi t3, t3, 0xFC, dataSize=1
108
109 # Set up CS.
110 wrsel cs, t3
111 wrbase cs, t0, dataSize=8
112 wrlimit cs, t1, dataSize=4
113 # Not writable, read/execute-able, not expandDown,
114 # dpl=0, defaultSize=0, long mode
115 limm t4, ((0 << 0) | (0 << 2) | (0 << 3) | \
116 (1 << 4) | (0 << 5) | (1 << 6) | \
117 (1 << 7) | (10 << 8) | (0 << 12) | \
118 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
119 wrattr cs, t4
120
121 # Set up SS.
122 addi t3, t3, 8
123 wrsel ss, t3
124 wrbase ss, t0, dataSize=8
125 wrlimit ss, t1, dataSize=4
126 # Writable, readable, not expandDown,
127 # dpl=0, defaultSize=0, not long mode
128 limm t4, ((0 << 0) | (0 << 2) | (1 << 3) | \
129 (0 << 4) | (0 << 5) | (1 << 6) | \
130 (1 << 7) | (2 << 8) | (1 << 12) | \
131 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
132 wrattr ss, t4
133
134 # Set the new rip.
135 rdval t7, cstar
136 wrip t0, t7
137
138 # Mask the flags against sf_mask and leave RF turned off.
139 rdval t3, sf_mask, dataSize=8
140 xor t3, t3, t1, dataSize=8
141 and t3, t3, r11, dataSize=8
142 wrflags t3, t0
143};
144
145def macroop SYSCALL_LEGACY
146{
147 panic "The syscall instruction isn't implemented in legacy mode."
148};
149
150def macroop SYSRET_TO_64
151{
152 # All 1s.
153 limm t1, "(uint64_t)(-1)", dataSize=8
154
155 rdval t3, star
156 srli t3, t3, 48, dataSize=8
157 ori t3, t3, 3, dataSize=1
158
159 # Set rflags to r11 with RF and VM cleared.
160 limm t4, "~(RFBit | VMBit)", dataSize=8
161 and t4, t4, r11, dataSize=8
162 wrflags t4, t0
163
164 # Set up CS.
165 addi t4, t3, 16, dataSize=8
166 wrsel cs, t4
167 wrbase cs, t0, dataSize=8
168 wrlimit cs, t1, dataSize=4
169 # Not writable, read/execute-able, not expandDown,
170 # dpl=3, defaultSize=0, long mode
171 limm t4, ((3 << 0) | (0 << 2) | (0 << 3) | \
172 (1 << 4) | (0 << 5) | (1 << 6) | \
173 (1 << 7) | (10 << 8) | (0 << 12) | \
174 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
175 wrattr cs, t4
176
177 # Only the selector is changed for SS.
178 addi t4, t3, 8, dataSize=8
179 wrsel ss, t4
180
181 # Set the RIP back.
182 wrip rcx, t0, dataSize=8
183};
184
185def macroop SYSRET_TO_COMPAT
186{
187 # All 1s.
188 limm t1, "(uint64_t)(-1)", dataSize=8
189
190 rdval t3, star
191 srli t3, t3, 48, dataSize=8
192 ori t3, t3, 3, dataSize=1
193
194 # Set rflags to r11 with RF and VM cleared.
195 limm t4, "~(RFBit | VMBit)", dataSize=8
196 and t4, t4, r11, dataSize=8
197 wrflags t4, t0
198
199 # Set up CS.
200 wrsel cs, t3
201 wrbase cs, t0, dataSize=8
202 wrlimit cs, t1, dataSize=4
203 # Not writable, read/execute-able, not expandDown,
204 # dpl=3, defaultSize=1, not long mode
205 limm t4, ((3 << 0) | (0 << 2) | (0 << 3) | \
206 (1 << 4) | (0 << 5) | (1 << 6) | \
207 (1 << 7) | (10 << 8) | (0 << 12) | \
208 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
209 wrattr cs, t4
210
211 # Only the selector is changed for SS.
212 addi t4, t3, 8, dataSize=8
213 wrsel ss, t4
214
215 # Set the RIP back.
216 wrip rcx, t0, dataSize=8
217};
218
219def macroop SYSRET_NON_64
220{
221 panic "The sysret instruction isn't implemented in legacy mode."
222};
223'''
224#let {{
225# class SYSENTER(Inst):
226# "GenFault ${new UnimpInstFault}"
227# class SYSEXIT(Inst):
228# "GenFault ${new UnimpInstFault}"
229#}};
| 84
85 # Mask the flags against sf_mask and leave RF turned off.
86 rdval t3, sf_mask, dataSize=8
87 xor t3, t3, t1, dataSize=8
88 and t3, t3, r11, dataSize=8
89 wrflags t3, t0
90};
91
92def macroop SYSCALL_COMPAT
93{
94 # All 1s.
95 limm t1, "(uint64_t)(-1)", dataSize=8
96
97 # Save the next RIP.
98 rdip rcx
99
100 # Stick rflags with RF masked into r11.
101 rflags t2
102 limm t3, "~RFBit", dataSize=8
103 and r11, t2, t3, dataSize=8
104
105 rdval t3, star
106 srli t3, t3, 32, dataSize=8
107 andi t3, t3, 0xFC, dataSize=1
108
109 # Set up CS.
110 wrsel cs, t3
111 wrbase cs, t0, dataSize=8
112 wrlimit cs, t1, dataSize=4
113 # Not writable, read/execute-able, not expandDown,
114 # dpl=0, defaultSize=0, long mode
115 limm t4, ((0 << 0) | (0 << 2) | (0 << 3) | \
116 (1 << 4) | (0 << 5) | (1 << 6) | \
117 (1 << 7) | (10 << 8) | (0 << 12) | \
118 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
119 wrattr cs, t4
120
121 # Set up SS.
122 addi t3, t3, 8
123 wrsel ss, t3
124 wrbase ss, t0, dataSize=8
125 wrlimit ss, t1, dataSize=4
126 # Writable, readable, not expandDown,
127 # dpl=0, defaultSize=0, not long mode
128 limm t4, ((0 << 0) | (0 << 2) | (1 << 3) | \
129 (0 << 4) | (0 << 5) | (1 << 6) | \
130 (1 << 7) | (2 << 8) | (1 << 12) | \
131 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
132 wrattr ss, t4
133
134 # Set the new rip.
135 rdval t7, cstar
136 wrip t0, t7
137
138 # Mask the flags against sf_mask and leave RF turned off.
139 rdval t3, sf_mask, dataSize=8
140 xor t3, t3, t1, dataSize=8
141 and t3, t3, r11, dataSize=8
142 wrflags t3, t0
143};
144
145def macroop SYSCALL_LEGACY
146{
147 panic "The syscall instruction isn't implemented in legacy mode."
148};
149
150def macroop SYSRET_TO_64
151{
152 # All 1s.
153 limm t1, "(uint64_t)(-1)", dataSize=8
154
155 rdval t3, star
156 srli t3, t3, 48, dataSize=8
157 ori t3, t3, 3, dataSize=1
158
159 # Set rflags to r11 with RF and VM cleared.
160 limm t4, "~(RFBit | VMBit)", dataSize=8
161 and t4, t4, r11, dataSize=8
162 wrflags t4, t0
163
164 # Set up CS.
165 addi t4, t3, 16, dataSize=8
166 wrsel cs, t4
167 wrbase cs, t0, dataSize=8
168 wrlimit cs, t1, dataSize=4
169 # Not writable, read/execute-able, not expandDown,
170 # dpl=3, defaultSize=0, long mode
171 limm t4, ((3 << 0) | (0 << 2) | (0 << 3) | \
172 (1 << 4) | (0 << 5) | (1 << 6) | \
173 (1 << 7) | (10 << 8) | (0 << 12) | \
174 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
175 wrattr cs, t4
176
177 # Only the selector is changed for SS.
178 addi t4, t3, 8, dataSize=8
179 wrsel ss, t4
180
181 # Set the RIP back.
182 wrip rcx, t0, dataSize=8
183};
184
185def macroop SYSRET_TO_COMPAT
186{
187 # All 1s.
188 limm t1, "(uint64_t)(-1)", dataSize=8
189
190 rdval t3, star
191 srli t3, t3, 48, dataSize=8
192 ori t3, t3, 3, dataSize=1
193
194 # Set rflags to r11 with RF and VM cleared.
195 limm t4, "~(RFBit | VMBit)", dataSize=8
196 and t4, t4, r11, dataSize=8
197 wrflags t4, t0
198
199 # Set up CS.
200 wrsel cs, t3
201 wrbase cs, t0, dataSize=8
202 wrlimit cs, t1, dataSize=4
203 # Not writable, read/execute-able, not expandDown,
204 # dpl=3, defaultSize=1, not long mode
205 limm t4, ((3 << 0) | (0 << 2) | (0 << 3) | \
206 (1 << 4) | (0 << 5) | (1 << 6) | \
207 (1 << 7) | (10 << 8) | (0 << 12) | \
208 (1 << 13) | (0 << 14) | (1 << 15)), dataSize=8
209 wrattr cs, t4
210
211 # Only the selector is changed for SS.
212 addi t4, t3, 8, dataSize=8
213 wrsel ss, t4
214
215 # Set the RIP back.
216 wrip rcx, t0, dataSize=8
217};
218
219def macroop SYSRET_NON_64
220{
221 panic "The sysret instruction isn't implemented in legacy mode."
222};
223'''
224#let {{
225# class SYSENTER(Inst):
226# "GenFault ${new UnimpInstFault}"
227# class SYSEXIT(Inst):
228# "GenFault ${new UnimpInstFault}"
229#}};
|