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1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: ctrace.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: @(#)ctrace.fth 2.5 04/04/15 19:10:01 | |
43 | purpose: | |
44 | copyright: Copyright 1990-2004 Sun Microsystems, Inc. All Rights Reserved | |
45 | copyright: Use is subject to license terms. | |
46 | \ Copyright 1985-1990 Bradley Forthware | |
47 | ||
48 | \ After a crash, displays a backtrace of C stack frames. | |
49 | \ This assumes the stack format used by the Sun SPARC C compiler. | |
50 | ||
51 | only forth also hidden also forth definitions | |
52 | ||
53 | headerless | |
54 | defer .subname ( adr -- ) | |
55 | \ : .8x ( n -- ) push-hex 8 u.r pop-base ; | |
56 | ' .x is .subname | |
57 | ||
58 | : >reg ( reg# -- addr ) | |
59 | dup 3 >> case | |
60 | 0 of addr %g0 endof | |
61 | 1 of addr %o0 endof | |
62 | 2 of addr %l0 endof | |
63 | 3 of addr %i0 endof | |
64 | endcase ( reg# base ) | |
65 | swap h# 7 and la+ | |
66 | ; | |
67 | : >ea ( instruction -- address ) | |
68 | dup h# 1000 and if ( instruction ) \ Immediate | |
69 | dup d# 20 << d# 12 >>a ( instruction immediate ) | |
70 | else | |
71 | dup h# 1f and >reg l@ ( instruction regval ) | |
72 | then | |
73 | swap d# 14 >> h# 1f and >reg l@ + ( target-address ) | |
74 | ; | |
75 | : decode-jmpl ( instruction -- false | target true ) | |
76 | dup h# 81f80000 and h# 81c00000 = if >ea true else drop false then | |
77 | ; | |
78 | : .subroutine ( return-adr -- ) \ Show subroutine address | |
79 | dup pointer-bad? over 0= or if drop ." XXXXXXX " exit then | |
80 | dup l@ th c000.0000 and th 4000.0000 = if \ call instruction ? | |
81 | ." call " dup l@ th 3fff.ffff and 2 << + .subname | |
82 | else | |
83 | \ XXX decode the address specification from the jmpl | |
84 | \ if that address spec references OUT's or GLOBAL's, we can't | |
85 | \ be sure that it is correct. The next window context contains | |
86 | \ the relevant registers. | |
87 | l@ decode-jmpl if | |
88 | ." jmpl " .subname \ indirect call (jmpl) | |
89 | else | |
90 | ." ???? " | |
91 | then | |
92 | then | |
93 | ; | |
94 | : .2x ( n -- ) push-hex 2 u.r pop-base ; | |
95 | : .c-call ( -- exit? ) | |
96 | %o7 .subroutine ." from " %o7 .subname cr | |
97 | ." " window# .2x ." w %o0-%o5: (" addr %o0 6 .ndump ." )" cr | |
98 | cr exit? | |
99 | ; | |
100 | ||
101 | headers | |
102 | : ctrace ( -- ) \ C stack backtrace | |
103 | state-valid @ 0= if ." No saved state" exit then | |
104 | ." PC: " %pc .subname cr | |
105 | ." Last leaf: " | |
106 | ||
107 | window# ( previous-window# ) | |
108 | 0w begin .c-call (+w) or until ( previous-window# ) | |
109 | set-window | |
110 | ; |