Mercurial > pub > dyncall > dyncall

comparison dyncallback/dyncall_thunk_ppc64.c @ 0:3e629dc19168

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
initial from svn dyncall-1745
author Daniel Adler
date Thu, 19 Mar 2015 22:24:28 +0100
parents
children 7ca57dbefed4
comparison
equal deleted inserted replaced
-1:000000000000 0:3e629dc19168
1 /*
2
3 Package: dyncall
4 Library: dyncallback
5 File: dyncallback/dyncall_thunk_ppc64.c
6 Description: Thunk - Implementation for ppc64
7 License:
8
9 Copyright (c) 2014-2015 Masanori Mitsugi <mitsugi@linux.vnet.ibm.com>
10
11 Permission to use, copy, modify, and distribute this software for any
12 purpose with or without fee is hereby granted, provided that the above
13 copyright notice and this permission notice appear in all copies.
14
15 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
16 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
17 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
18 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22
23 */
24
25 #include "dyncall_thunk.h"
26
27 #define HIST16(x) (unsigned short)((((unsigned long)(x))>>48UL) & 0xffff)
28 #define HIER16(x) (unsigned short)((((unsigned long)(x))>>32UL) & 0xffff)
29 #define HI16(x) (unsigned short)((((unsigned long)(x))>>16UL) & 0xffff)
30 #define LO16(x) (unsigned short)( ((unsigned long)(x)) & 0xffff)
31
32 void dcbInitThunk(DCThunk* p, void (*entry)())
33 {
34 #if DC__ABI_PPC64_ELF_V == 2
35 /*
36 ppc64 thunk code:
37 lis r11, HIST16(p)
38 ori r11,r11, HIER16(p)
39 rldicr r11,r11,32,31
40 oris r11,r11, HI16(p)
41 ori r11,r11, LO16(p)
42 ld r12,40(r11)
43 mtctr r12
44 bctr
45 */
46
47 p->code_load_hist = 0x3d60U; /* lis r11,HIST16(p) */
48 p->addr_self_hist = HIST16(p);
49 p->code_load_hier = 0x616bU; /* ori r11,r11, HIER16(p) */
50 p->addr_self_hier = HIER16(p);
51 p->code_rot = 0x796b07c6U; /* rldicr r11,r11,32,31 */
52 p->code_load_hi = 0x656bU; /* oris r11,r11, HI16(p) */
53 p->addr_self_hi = HI16(p);
54 p->code_load_lo = 0x616bU; /* ori r11,r11, LO16(p) */
55 p->addr_self_lo = LO16(p);
56 p->code_jump[0] = 0xe98b0028U; /* ld r12,40(r11) */
57 p->code_jump[1] = 0x7d8903a6U; /* mtclr r12 */
58 p->code_jump[2] = 0x4e800420U; /* bctr */
59 p->addr_entry = (void *)(entry);
60
61 #else
62 /*
63 ppc64 thunk code:
64 oris r11, r2, HI16(p)
65 ori r11,r11, LO16(p)
66 ld r12,48(r11)
67 ld r2,56(r11)
68 mtctr r12
69 bctr
70 */
71
72 p->thunk_entry = (void *)&(p->code_load_hi);
73 p->toc_thunk = ((long)(p->thunk_entry) & 0xffffffff00000000UL);
74
75 p->code_load_hi = 0x644bU; /* oris r11, r2, HI16(p) */
76 p->addr_self_hi = HI16(p);
77 p->code_load_lo = 0x616bU; /* ori r11,r11, LO16(p) */
78 p->addr_self_lo = LO16(p);
79 p->code_jump[0] = 0xe98b0030U; /* ld r12,48(r11) */
80 p->code_jump[1] = 0xe84b0038U; /* ld r2,56(r11) */
81 p->code_jump[2] = 0x7d8903a6U; /* mtclr r12 */
82 p->code_jump[3] = 0x4e800420U; /* bctr */
83 p->addr_entry = (void *)*((long *)entry);
84 p->toc_entry = *((long *)(entry + 8));
85 #endif
86 }
87