1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
|
/* $OpenBSD: ldasm.S,v 1.6 2010/02/01 21:36:00 kettenis Exp $ */
/*
* Copyright (c) 2004 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/syscall.h>
#include <machine/asm.h>
#define _LOCORE
#include <machine/frame.h>
#include <machine/vmparam.h>
#undef _LOCORE
ENTRY(_dl_start,32)
copy r3, r1
copy sp, r3
stwm r1, HPPA_FRAME_SIZE+16*4(sp)
stw %arg0, HPPA_FRAME_ARG(0)(r3) /* ps_strings */
#define ADDR(s,r) \
bl 4, t1 !\
depi 0, 31, 2, t1 /* kill pl bits */ !\
b s /* cold brunch -- never done */ !\
ldw 0(t1), t2 /* cat(w,w1,w2{10},w2{0..9}) << 2 */ !\
extru t2, 28, 10, t3 /* w2{0..9} */ !\
extru t2, 26, 16, r /* w1 */ !\
dep t3, 31, 11, r !\
extru,= t2, 31, 1, r0 /* w */ !\
depi 1, 15, 1, r !\
extru,= t2, 29, 1, r0 /* w2{10} */ !\
depi 1, 21, 1, r !\
sh2add r, t1, r /* plus the base */ !\
addi 8, r, r /* bl target is -8 */
ADDR(_GLOBAL_OFFSET_TABLE_, r19)
ADDR(_DYNAMIC, arg2)
stw arg2, HPPA_FRAME_ARG(1)(r3)
/* make sure to get a fault until it's set proper */
ldi -1, %dp
ldw 0(arg0), arg0
ldo 4(r3), arg1 /* dl_data */
bl _dl_boot_bind, rp
ldo -4(arg0), arg0
ldw HPPA_FRAME_ARG(1)(r3), arg1 /* &_DYNAMIC */
ldw HPPA_FRAME_ARG(0)(r3), arg3 /* ps_strings */
ldw 0(r19), arg2
sub arg1, arg2, arg2 /* loff */
ldw 0(arg3), arg0 /* argv */
ldw 8(arg3), arg1 /* envp */
bl _dl_boot, rp
ldo 4(r3), arg3 /* dl_data */
ldw HPPA_FRAME_ARG(0)(r3), arg0 /* ps_strings */
/* ??? cleanup, arg1 */
/* ??? obj, arg2 */
ldo HPPA_FRAME_SIZE(r3), sp
copy r0, rp
bv r0(ret0)
ldwm -HPPA_FRAME_SIZE(sp), r3
EXIT(_dl_start)
/*
* void _hppa_dl_dtors(void);
*/
ENTRY(_hppa_dl_dtors,0)
ADDR(_GLOBAL_OFFSET_TABLE_, r19)
b _dl_dtors
nop
EXIT(_hppa_dl_dtors)
LEAF_ENTRY(_hppa_dl_set_dp)
bv r0(rp)
copy arg0, r27
EXIT(_hppa_dl_set_dp)
/*
* void hppa_call(void (*arg)(void), void *r19, Elf_Addr func);
*/
ENTRY(hppa_call,0)
copy r3, r1
copy sp, r3
stwm r1, HPPA_FRAME_SIZE(sp)
stw r19, HPPA_FRAME_SL(r3)
stw rp, HPPA_FRAME_CRP(r3)
copy arg1, r19
.call
blr r0, rp
bv,n (arg2)
nop
ldw HPPA_FRAME_CRP(r3), rp
ldw HPPA_FRAME_SL(r3), r19
ldo HPPA_FRAME_SIZE(r3), sp
bv r0(rp)
ldwm -HPPA_FRAME_SIZE(sp), r3
EXIT(hppa_call)
/*
* This is a magic branch instruction that is used by GCC's
* __canonicalize_funcptr_for_compare() function to fixup relocations
* in order to do function pointer comparisons.
*/
bl _dl_bind, rp
ENTRY(_dl_bind_start,32)
copy r3, r1
copy sp, r3
stwm r1, HPPA_FRAME_SIZE(sp)
stw rp, HPPA_FRAME_CRP(r3)
stw arg0, HPPA_FRAME_ARG(0)(r3)
stw arg1, HPPA_FRAME_ARG(1)(r3)
stw arg2, HPPA_FRAME_ARG(2)(r3)
stw arg3, HPPA_FRAME_ARG(3)(r3)
stw t1, 4(r3)
stw ret0, 8(r3)
stw ret1, 12(r3)
ldw 12(r20), arg0
copy r19, arg1
bl _dl_bind, rp
copy r21, r19
/* load &func and sl from plt entry returned */
ldw 0(ret0), r21
ldw 4(ret0), r19
ldw HPPA_FRAME_ARG(0)(r3), arg0
ldw HPPA_FRAME_ARG(1)(r3), arg1
ldw HPPA_FRAME_ARG(2)(r3), arg2
ldw HPPA_FRAME_ARG(3)(r3), arg3
ldw 4(r3), t1
ldw 8(r3), ret0
ldw 12(r3), ret1
ldw HPPA_FRAME_CRP(r3), rp
ldo HPPA_FRAME_SIZE(r3), sp
bv r0(r21)
ldwm -HPPA_FRAME_SIZE(sp), r3
EXIT(_dl_bind_start)
#define SYSCALL(x) !\
stw rp, HPPA_FRAME_ERP(sr0,sp) !\
ldil L%SYSCALLGATE, r1 !\
ble 4(sr7, r1) !\
ldi __CONCAT(SYS_,x), t1 !\
comb,<> r0, t1, _dl_sysexit !\
ldw HPPA_FRAME_ERP(sr0,sp), rp
_dl_sysexit
bv r0(rp)
sub r0, ret0, ret0
ENTRY(_dl_close,0)
SYSCALL(close)
bv r0(rp)
nop
EXIT(_dl_close)
ENTRY(_dl_exit,0)
SYSCALL(exit)
bv r0(rp)
nop
EXIT(_dl_exit)
ENTRY(_dl_issetugid,0)
SYSCALL(issetugid)
bv r0(rp)
nop
EXIT(_dl_issetugid)
ENTRY(_dl__syscall,0)
SYSCALL(__syscall)
bv r0(rp)
nop
EXIT(_dl__syscall)
ENTRY(_dl_munmap,0)
SYSCALL(munmap)
bv r0(rp)
nop
EXIT(_dl_munmap)
ENTRY(_dl_mprotect,0)
SYSCALL(mprotect)
bv r0(rp)
nop
EXIT(_dl_mprotect)
ENTRY(_dl_open,0)
SYSCALL(open)
bv r0(rp)
nop
EXIT(_dl_open)
ENTRY(_dl_read,0)
SYSCALL(read)
bv r0(rp)
nop
EXIT(_dl_read)
ENTRY(_dl_write,0)
SYSCALL(write)
bv r0(rp)
nop
EXIT(_dl_write)
ENTRY(_dl_stat,0)
SYSCALL(stat)
bv r0(rp)
nop
EXIT(_dl_stat)
ENTRY(_dl_fstat,0)
SYSCALL(fstat)
bv r0(rp)
nop
EXIT(_dl_fstat)
ENTRY(_dl_fcntl,0)
SYSCALL(fcntl)
bv r0(rp)
nop
EXIT(_dl_fcntl)
ENTRY(_dl_sysctl,0)
SYSCALL(__sysctl)
bv r0(rp)
nop
EXIT(_dl_issetugid)
ENTRY(_dl_getdirentries,0)
SYSCALL(getdirentries)
bv r0(rp)
nop
EXIT(_dl_getdirentries)
ENTRY(_dl_gettimeofday,0)
SYSCALL(gettimeofday)
bv r0(rp)
nop
EXIT(_dl_gettimeofday)
ENTRY(_dl_sigprocmask,0)
stw arg2, HPPA_FRAME_ARG(2)(sp)
comb,<>,n r0, arg1, _dl_sigprocmask$nblock
b _dl_sigprocmask$call
ldi 1, arg0
_dl_sigprocmask$nblock
ldw 0(arg1), arg1
stw arg1, HPPA_FRAME_ARG(1)(sp)
_dl_sigprocmask$call
SYSCALL(sigprocmask)
ldw HPPA_FRAME_ARG(2)(sp), arg2
add,= r0, arg2, r0
stw ret0, 0(arg2)
bv r0(rp)
copy r0, ret0
EXIT(_dl_sigprocmask)
.end
|
