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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: forthint.fth | |
4 | \ | |
5 | \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
6 | \ | |
7 | \ - Do no alter or remove copyright notices | |
8 | \ | |
9 | \ - Redistribution and use of this software in source and binary forms, with | |
10 | \ or without modification, are permitted provided that the following | |
11 | \ conditions are met: | |
12 | \ | |
13 | \ - Redistribution of source code must retain the above copyright notice, | |
14 | \ this list of conditions and the following disclaimer. | |
15 | \ | |
16 | \ - Redistribution in binary form must reproduce the above copyright notice, | |
17 | \ this list of conditions and the following disclaimer in the | |
18 | \ documentation and/or other materials provided with the distribution. | |
19 | \ | |
20 | \ Neither the name of Sun Microsystems, Inc. or the names of contributors | |
21 | \ may be used to endorse or promote products derived from this software | |
22 | \ without specific prior written permission. | |
23 | \ | |
24 | \ This software is provided "AS IS," without a warranty of any kind. | |
25 | \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, | |
26 | \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A | |
27 | \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN | |
28 | \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR | |
29 | \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR | |
30 | \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN | |
31 | \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR | |
32 | \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE | |
33 | \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, | |
34 | \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF | |
35 | \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
36 | \ | |
37 | \ You acknowledge that this software is not designed, licensed or | |
38 | \ intended for use in the design, construction, operation or maintenance of | |
39 | \ any nuclear facility. | |
40 | \ | |
41 | \ ========== Copyright Header End ============================================ | |
42 | id: @(#)forthint.fth 1.3 07/06/22 | |
43 | purpose: | |
44 | copyright: Copyright 2007 Sun Microsystems, Inc. All rights reserved. | |
45 | copyright: Use is subject to license terms. | |
46 | ||
47 | headerless | |
48 | 0 value tick-ival | |
49 | ||
50 | code interrupt-return ( abort? -- ) | |
51 | tos %l1 move | |
52 | h# 4000 %g1 set | |
53 | %g1 0 %r21 wrasr \ Clear SOFT INT. Reg | |
54 | #Sync membar | |
55 | ||
56 | h# 10001 %g4 set \ STICK | TICK | |
57 | %r22 %g1 rdasr | |
58 | %g1 %g4 %g0 andcc | |
59 | 0<> if | |
60 | nop | |
61 | h# 10001 %g4 set \ STICK | TICK | |
62 | %g4 0 %r21 wrasr \ Clear | |
63 | #Sync membar | |
64 | ||
65 | \ Only re-arm alarms if we arent aborted. | |
66 | %l1 %g0 cmp | |
67 | 0= if | |
68 | 'user# tick-ival %g4 set | |
69 | %g4 up %g4 nget \ Get interval incr | |
70 | %r24 %g7 rdasr \ get Stick | |
71 | %g7 1 %g7 sllx | |
72 | %g7 1 %g7 srlx | |
73 | %g7 %g4 %g7 add | |
74 | %g7 %g0 %r25 wrasr \ Set StickCompare | |
75 | #Sync membar | |
76 | then | |
77 | then | |
78 | ||
79 | %g0 h# 38 %l5 add | |
80 | %l5 %g0 h# 20 %l5 ldxa \ CPU struct PA | |
81 | 0 >intr-state %l0 set | |
82 | %l0 %l5 %g5 add \ CPU save area | |
83 | %l1 %g0 cmp | |
84 | restore-cpu-state 0= brif \ Not aborted resume | |
85 | %g0 %g4 move | |
86 | ||
87 | %g0 2 %g4 add \ restore and cont. | |
88 | restore-cpu-state always brif | |
89 | %g7 rdpc | |
90 | ||
91 | %g0 2 wrgl \ ok goto savestate | |
92 | 0 >intr-state %g1 set | |
93 | small-forth-save-state always brif | |
94 | nop | |
95 | c; | |
96 | ||
97 | : interrupt-handler | |
98 | my-self >r \ XXX Need this?? | |
99 | check-alarm | |
100 | r> is my-self \ XXX Need this?? | |
101 | aborted? @ interrupt-return | |
102 | ; | |
103 | ||
104 | label interrupt-preamble | |
105 | %g0 h# 38 %g1 add | |
106 | %g1 %g0 h# 20 %g1 ldxa \ CPU struct PA | |
107 | 0 >intr-state %g5 set | |
108 | %g5 %g1 %g5 add \ DMMU stacks | |
109 | %g0 %g6 move \ Small Save | |
110 | save-cpu-state always brif | |
111 | %g7 rdpc | |
112 | ||
113 | \ We are now in a normal TL=0, IE=1, CWP=0 environment | |
114 | \ Set up Forth Machine | |
115 | 0 >intr-state %l0 set | |
116 | 'body interrupt-handler %l7 set | |
117 | setup-small-forth-engine always brif nop | |
118 | c; | |
119 | ||
120 | : set-next-tick ( -- ) | |
121 | system-tick-speed d# 100 / dup to tick-ival | |
122 | stick@ -1 1 >> and + stick-compare! | |
123 | ; | |
124 | ' set-next-tick is rearm-alarms | |
125 | ||
126 | : install-nmi ( -- ) | |
127 | d# 15 pil! | |
128 | lock[ | |
129 | set-next-tick | |
130 | interrupt-preamble h# 4e vector! | |
131 | ]unlock | |
132 | d# 13 pil! | |
133 | ; | |
134 | ||
135 | stand-init: Installing Simple Ticker | |
136 | init-alarm-list | |
137 | install-nmi | |
138 | ; | |
139 | ||
140 | : memory-warning ( request-size -- adr actual-size false | error true ) | |
141 | ." Rejecting alloc-mem!" | |
142 | drop 0 true | |
143 | ; | |
144 | ||
145 | headers | |
146 | ||
147 | cif: SUNW,heartbeat ( msecs -- abort? ) | |
148 | check-alarm aborted? @ 0<> | |
149 | ; | |
150 | ||
151 | headerless | |
152 | ||
153 | defer guest-state-boot-hook ( -- ) ' noop is guest-state-boot-hook | |
154 | ||
155 | : set-trap-table ( [mmu-area-ra] virt -- ) | |
156 | obp-control-relinquished? 0= if client-starting-chain then | |
157 | lock[ | |
158 | ||
159 | swap set-cpu-miss-area | |
160 | ||
161 | \ Save current %pstate and %pil | |
162 | pstate@ >r pil@ >r | |
163 | ||
164 | \ Stop the L14 Timer | |
165 | 1 d# 63 << stick-compare! ( virt ) | |
166 | ||
167 | \ Clear Soft Interrupts | |
168 | -1 clear-softint! ( virt ) | |
169 | ||
170 | \ Set New %TBA | |
171 | tba! ]unlock | |
172 | ||
173 | \ we don't permit more dynamic allocation. | |
174 | ['] memory-warning is more-memory | |
175 | ||
176 | \ Client has now officially "taken over" | |
177 | true to obp-control-relinquished? | |
178 | ||
179 | guest-state-boot-hook | |
180 | ||
181 | \ Restore previous %pil and %pstate | |
182 | r> pil! r> pstate! | |
183 | ; | |
184 | ||
185 | headers | |
186 | ||
187 | cif: SUNW,sun4v-set-trap-table ( [mmu-area-ra] virt -- ) set-trap-table ; | |
188 | cif: SUNW,set-trap-table ( [mmu-area-ra] virt -- ) set-trap-table ; |