Commit | Line | Data |
---|---|---|
920dae64 AT |
1 | \ ========== Copyright Header Begin ========================================== |
2 | \ | |
3 | \ Hypervisor Software File: doccall.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 | \ doccall.fth 2.4 94/08/13 | |
43 | \ Copyright 1985-1990 Bradley Forthware | |
44 | ||
45 | \ Shared code for ccall interface. This file is used in conjunction with | |
46 | \ ccall.fth. The 2 files are separate because the code in this file must | |
47 | \ be resident, while the code in ccall.fth can be transient. | |
48 | \ | |
49 | \ do-ccall is a shared subroutine which is called from code generated by | |
50 | \ "ccall". The calling sequence looks like: | |
51 | \ | |
52 | \ <code to transfer arguments from the stack to registers> | |
53 | \ sethi %hi(c_entry_point), %l0 | |
54 | \ call do-ccall | |
55 | \ or %l0, %lo(c_entry_point), %l0 | |
56 | \ <code to push results, if any, on the stack> | |
57 | ||
58 | label do-ccall \ Subroutine address in %l0, return address in %o7 | |
59 | ||
60 | sp 'user saved-sp nput \ Save for callbacks | |
61 | rp 'user saved-rp nput \ Save for callbacks | |
62 | ||
63 | %o7 %l1 move \ Exchange %l0 and %o7 | |
64 | %l0 %o7 move | |
65 | %l1 %l0 move | |
66 | ||
67 | \ Save the globals in case C changes them | |
68 | %g1 %l1 move | |
69 | %g2 %l2 move | |
70 | %g3 %l3 move | |
71 | %g4 %l4 move | |
72 | %g5 %l5 move | |
73 | %g6 %l6 move | |
74 | %o7 0 %o7 jmpl | |
75 | %g7 %l7 move \ Delay slot | |
76 | ||
77 | \ Restore the globals | |
78 | %l1 %g1 move | |
79 | %l2 %g2 move | |
80 | %l3 %g3 move | |
81 | %l4 %g4 move | |
82 | %l5 %g5 move | |
83 | %l6 %g6 move | |
84 | %l0 8 %g0 jmpl \ Return | |
85 | %l7 %g7 move | |
86 | end-code |