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
|
/* -----------------------------------------------------------------------
sysv.S - Copyright (c) 1998 Andreas Schwab
Copyright (c) 2008 Red Hat, Inc.
m68k Foreign Function Interface
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#define LIBFFI_ASM
#include <fficonfig.h>
#include <ffi.h>
#ifdef HAVE_AS_CFI_PSEUDO_OP
#define CFI_STARTPROC() .cfi_startproc
#define CFI_OFFSET(reg,off) .cfi_offset reg,off
#define CFI_DEF_CFA(reg,off) .cfi_def_cfa reg,off
#define CFI_ENDPROC() .cfi_endproc
#else
#define CFI_STARTPROC()
#define CFI_OFFSET(reg,off)
#define CFI_DEF_CFA(reg,off)
#define CFI_ENDPROC()
#endif
.text
.globl ffi_call_SYSV
.type ffi_call_SYSV,@function
.align 4
ffi_call_SYSV:
CFI_STARTPROC()
link %fp,#0
CFI_OFFSET(14,-8)
CFI_DEF_CFA(14,8)
move.l %d2,-(%sp)
CFI_OFFSET(2,-12)
| Make room for all of the new args.
sub.l 12(%fp),%sp
| Call ffi_prep_args
move.l 8(%fp),-(%sp)
pea 4(%sp)
#if !defined __PIC__
jsr ffi_prep_args
#else
bsr.l ffi_prep_args@PLTPC
#endif
addq.l #8,%sp
| Pass pointer to struct value, if any
move.l %a0,%a1
| Call the function
move.l 24(%fp),%a0
jsr (%a0)
| Remove the space we pushed for the args
add.l 12(%fp),%sp
| Load the pointer to storage for the return value
move.l 20(%fp),%a1
| Load the return type code
move.l 16(%fp),%d2
| If the return value pointer is NULL, assume no return value.
| NOTE: On the mc68000, tst on an address register is not supported.
#if defined(__mc68000__) && !defined(__mcoldfire__)
cmp.w #0, %a1
#else
tst.l %a1
#endif
jbeq noretval
btst #0,%d2
jbeq retlongint
move.l %d0,(%a1)
jbra epilogue
retlongint:
btst #1,%d2
jbeq retfloat
move.l %d0,(%a1)
move.l %d1,4(%a1)
jbra epilogue
retfloat:
btst #2,%d2
jbeq retdouble
#if defined(__MC68881__)
fmove.s %fp0,(%a1)
#else
move.l %d0,(%a1)
#endif
jbra epilogue
retdouble:
btst #3,%d2
jbeq retlongdouble
#if defined(__MC68881__)
fmove.d %fp0,(%a1)
#else
move.l %d0,(%a1)+
move.l %d1,(%a1)
#endif
jbra epilogue
retlongdouble:
btst #4,%d2
jbeq retpointer
#if defined(__MC68881__)
fmove.x %fp0,(%a1)
#else
move.l %d0,(%a1)+
move.l %d1,(%a1)+
move.l %d2,(%a1)
#endif
jbra epilogue
retpointer:
btst #5,%d2
jbeq retstruct1
move.l %a0,(%a1)
jbra epilogue
retstruct1:
btst #6,%d2
jbeq retstruct2
move.b %d0,(%a1)
jbra epilogue
retstruct2:
btst #7,%d2
jbeq noretval
move.w %d0,(%a1)
noretval:
epilogue:
move.l (%sp)+,%d2
unlk %fp
rts
CFI_ENDPROC()
.size ffi_call_SYSV,.-ffi_call_SYSV
.globl ffi_closure_SYSV
.type ffi_closure_SYSV, @function
.align 4
ffi_closure_SYSV:
CFI_STARTPROC()
link %fp,#-12
CFI_OFFSET(14,-8)
CFI_DEF_CFA(14,8)
move.l %sp,-12(%fp)
pea 8(%fp)
pea -12(%fp)
move.l %a0,-(%sp)
#if !defined __PIC__
jsr ffi_closure_SYSV_inner
#else
bsr.l ffi_closure_SYSV_inner@PLTPC
#endif
lsr.l #1,%d0
jne 1f
jcc .Lcls_epilogue
move.l -12(%fp),%d0
.Lcls_epilogue:
unlk %fp
rts
1:
lea -12(%fp),%a0
lsr.l #2,%d0
jne 1f
jcs .Lcls_ret_float
move.l (%a0)+,%d0
move.l (%a0),%d1
jra .Lcls_epilogue
.Lcls_ret_float:
#if defined(__MC68881__)
fmove.s (%a0),%fp0
#else
move.l (%a0),%d0
#endif
jra .Lcls_epilogue
1:
lsr.l #2,%d0
jne 1f
jcs .Lcls_ret_ldouble
#if defined(__MC68881__)
fmove.d (%a0),%fp0
#else
move.l (%a0)+,%d0
move.l (%a0),%d1
#endif
jra .Lcls_epilogue
.Lcls_ret_ldouble:
#if defined(__MC68881__)
fmove.x (%a0),%fp0
#else
move.l (%a0)+,%d0
move.l (%a0)+,%d1
move.l (%a0),%d2
#endif
jra .Lcls_epilogue
1:
lsr.l #2,%d0
jne .Lcls_ret_struct2
jcs .Lcls_ret_struct1
move.l (%a0),%a0
move.l %a0,%d0
jra .Lcls_epilogue
.Lcls_ret_struct1:
move.b (%a0),%d0
jra .Lcls_epilogue
.Lcls_ret_struct2:
move.w (%a0),%d0
jra .Lcls_epilogue
CFI_ENDPROC()
.size ffi_closure_SYSV,.-ffi_closure_SYSV
.globl ffi_closure_struct_SYSV
.type ffi_closure_struct_SYSV, @function
.align 4
ffi_closure_struct_SYSV:
CFI_STARTPROC()
link %fp,#0
CFI_OFFSET(14,-8)
CFI_DEF_CFA(14,8)
move.l %sp,-12(%fp)
pea 8(%fp)
move.l %a1,-(%sp)
move.l %a0,-(%sp)
#if !defined __PIC__
jsr ffi_closure_SYSV_inner
#else
bsr.l ffi_closure_SYSV_inner@PLTPC
#endif
unlk %fp
rts
CFI_ENDPROC()
.size ffi_closure_struct_SYSV,.-ffi_closure_struct_SYSV
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
|
