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
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
|
/* -----------------------------------------------------------------------
sysv.h - Copyright (c) 2003 Jakub Jelinek <jakub@redhat.com>
Copyright (c) 2008 Red Hat, Inc.
PowerPC64 Assembly glue.
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>
.file "linux64_closure.S"
#ifdef POWERPC64
FFI_HIDDEN (ffi_closure_LINUX64)
.globl ffi_closure_LINUX64
# if _CALL_ELF == 2
.text
ffi_closure_LINUX64:
addis %r2, %r12, .TOC.-ffi_closure_LINUX64@ha
addi %r2, %r2, .TOC.-ffi_closure_LINUX64@l
.localentry ffi_closure_LINUX64, . - ffi_closure_LINUX64
# else
.section ".opd","aw"
.align 3
ffi_closure_LINUX64:
# ifdef _CALL_LINUX
.quad .L.ffi_closure_LINUX64,.TOC.@tocbase,0
.type ffi_closure_LINUX64,@function
.text
.L.ffi_closure_LINUX64:
# else
FFI_HIDDEN (.ffi_closure_LINUX64)
.globl .ffi_closure_LINUX64
.quad .ffi_closure_LINUX64,.TOC.@tocbase,0
.size ffi_closure_LINUX64,24
.type .ffi_closure_LINUX64,@function
.text
.ffi_closure_LINUX64:
# endif
# endif
# if _CALL_ELF == 2
# 32 byte special reg save area + 64 byte parm save area
# + 64 byte retval area + 13*8 fpr save area + round to 16
# define STACKFRAME 272
# define PARMSAVE 32
# define RETVAL PARMSAVE+64
# else
# 48 bytes special reg save area + 64 bytes parm save area
# + 16 bytes retval area + 13*8 bytes fpr save area + round to 16
# define STACKFRAME 240
# define PARMSAVE 48
# define RETVAL PARMSAVE+64
# endif
.LFB1:
# if _CALL_ELF == 2
ld %r12, FFI_TRAMPOLINE_SIZE(%r11) # closure->cif
mflr %r0
lwz %r12, 28(%r12) # cif->flags
mtcrf 0x40, %r12
addi %r12, %r1, PARMSAVE
bt 7, .Lparmsave
# Our caller has not allocated a parameter save area.
# We need to allocate one here and use it to pass gprs to
# ffi_closure_helper_LINUX64.
addi %r12, %r1, -STACKFRAME+PARMSAVE
.Lparmsave:
std %r0, 16(%r1)
# Save general regs into parm save area
std %r3, 0(%r12)
std %r4, 8(%r12)
std %r5, 16(%r12)
std %r6, 24(%r12)
std %r7, 32(%r12)
std %r8, 40(%r12)
std %r9, 48(%r12)
std %r10, 56(%r12)
# load up the pointer to the parm save area
mr %r5, %r12
# else
# copy r2 to r11 and load TOC into r2
mr %r11, %r2
ld %r2, 16(%r11)
mflr %r0
# Save general regs into parm save area
# This is the parameter save area set up by our caller.
std %r3, PARMSAVE+0(%r1)
std %r4, PARMSAVE+8(%r1)
std %r5, PARMSAVE+16(%r1)
std %r6, PARMSAVE+24(%r1)
std %r7, PARMSAVE+32(%r1)
std %r8, PARMSAVE+40(%r1)
std %r9, PARMSAVE+48(%r1)
std %r10, PARMSAVE+56(%r1)
std %r0, 16(%r1)
# load up the pointer to the parm save area
addi %r5, %r1, PARMSAVE
# endif
# next save fpr 1 to fpr 13
stfd %f1, -104+(0*8)(%r1)
stfd %f2, -104+(1*8)(%r1)
stfd %f3, -104+(2*8)(%r1)
stfd %f4, -104+(3*8)(%r1)
stfd %f5, -104+(4*8)(%r1)
stfd %f6, -104+(5*8)(%r1)
stfd %f7, -104+(6*8)(%r1)
stfd %f8, -104+(7*8)(%r1)
stfd %f9, -104+(8*8)(%r1)
stfd %f10, -104+(9*8)(%r1)
stfd %f11, -104+(10*8)(%r1)
stfd %f12, -104+(11*8)(%r1)
stfd %f13, -104+(12*8)(%r1)
# load up the pointer to the saved fpr registers */
addi %r6, %r1, -104
# load up the pointer to the result storage
addi %r4, %r1, -STACKFRAME+RETVAL
stdu %r1, -STACKFRAME(%r1)
.LCFI0:
# get the context pointer from the trampoline
mr %r3, %r11
# make the call
# if defined _CALL_LINUX || _CALL_ELF == 2
bl ffi_closure_helper_LINUX64
# else
bl .ffi_closure_helper_LINUX64
# endif
.Lret:
# now r3 contains the return type
# so use it to look up in a table
# so we know how to deal with each type
# look up the proper starting point in table
# by using return type as offset
ld %r0, STACKFRAME+16(%r1)
cmpldi %r3, FFI_V2_TYPE_SMALL_STRUCT
bge .Lsmall
mflr %r4 # move address of .Lret to r4
sldi %r3, %r3, 4 # now multiply return type by 16
addi %r4, %r4, .Lret_type0 - .Lret
add %r3, %r3, %r4 # add contents of table to table address
mtctr %r3
bctr # jump to it
# Each of the ret_typeX code fragments has to be exactly 16 bytes long
# (4 instructions). For cache effectiveness we align to a 16 byte boundary
# first.
.align 4
.Lret_type0:
# case FFI_TYPE_VOID
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
nop
# case FFI_TYPE_INT
# ifdef __LITTLE_ENDIAN__
lwa %r3, RETVAL+0(%r1)
# else
lwa %r3, RETVAL+4(%r1)
# endif
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_FLOAT
lfs %f1, RETVAL+0(%r1)
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_DOUBLE
lfd %f1, RETVAL+0(%r1)
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_LONGDOUBLE
lfd %f1, RETVAL+0(%r1)
mtlr %r0
lfd %f2, RETVAL+8(%r1)
b .Lfinish
# case FFI_TYPE_UINT8
# ifdef __LITTLE_ENDIAN__
lbz %r3, RETVAL+0(%r1)
# else
lbz %r3, RETVAL+7(%r1)
# endif
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_SINT8
# ifdef __LITTLE_ENDIAN__
lbz %r3, RETVAL+0(%r1)
# else
lbz %r3, RETVAL+7(%r1)
# endif
extsb %r3,%r3
mtlr %r0
b .Lfinish
# case FFI_TYPE_UINT16
# ifdef __LITTLE_ENDIAN__
lhz %r3, RETVAL+0(%r1)
# else
lhz %r3, RETVAL+6(%r1)
# endif
mtlr %r0
.Lfinish:
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_SINT16
# ifdef __LITTLE_ENDIAN__
lha %r3, RETVAL+0(%r1)
# else
lha %r3, RETVAL+6(%r1)
# endif
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_UINT32
# ifdef __LITTLE_ENDIAN__
lwz %r3, RETVAL+0(%r1)
# else
lwz %r3, RETVAL+4(%r1)
# endif
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_SINT32
# ifdef __LITTLE_ENDIAN__
lwa %r3, RETVAL+0(%r1)
# else
lwa %r3, RETVAL+4(%r1)
# endif
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_UINT64
ld %r3, RETVAL+0(%r1)
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_SINT64
ld %r3, RETVAL+0(%r1)
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_TYPE_STRUCT
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
nop
# case FFI_TYPE_POINTER
ld %r3, RETVAL+0(%r1)
mtlr %r0
addi %r1, %r1, STACKFRAME
blr
# case FFI_V2_TYPE_FLOAT_HOMOG
lfs %f1, RETVAL+0(%r1)
lfs %f2, RETVAL+4(%r1)
lfs %f3, RETVAL+8(%r1)
b .Lmorefloat
# case FFI_V2_TYPE_DOUBLE_HOMOG
lfd %f1, RETVAL+0(%r1)
lfd %f2, RETVAL+8(%r1)
lfd %f3, RETVAL+16(%r1)
lfd %f4, RETVAL+24(%r1)
mtlr %r0
lfd %f5, RETVAL+32(%r1)
lfd %f6, RETVAL+40(%r1)
lfd %f7, RETVAL+48(%r1)
lfd %f8, RETVAL+56(%r1)
addi %r1, %r1, STACKFRAME
blr
.Lmorefloat:
lfs %f4, RETVAL+12(%r1)
mtlr %r0
lfs %f5, RETVAL+16(%r1)
lfs %f6, RETVAL+20(%r1)
lfs %f7, RETVAL+24(%r1)
lfs %f8, RETVAL+28(%r1)
addi %r1, %r1, STACKFRAME
blr
.Lsmall:
# ifdef __LITTLE_ENDIAN__
ld %r3,RETVAL+0(%r1)
mtlr %r0
ld %r4,RETVAL+8(%r1)
addi %r1, %r1, STACKFRAME
blr
# else
# A struct smaller than a dword is returned in the low bits of r3
# ie. right justified. Larger structs are passed left justified
# in r3 and r4. The return value area on the stack will have
# the structs as they are usually stored in memory.
cmpldi %r3, FFI_V2_TYPE_SMALL_STRUCT + 7 # size 8 bytes?
neg %r5, %r3
ld %r3,RETVAL+0(%r1)
blt .Lsmalldown
mtlr %r0
ld %r4,RETVAL+8(%r1)
addi %r1, %r1, STACKFRAME
blr
.Lsmalldown:
addi %r5, %r5, FFI_V2_TYPE_SMALL_STRUCT + 7
mtlr %r0
sldi %r5, %r5, 3
addi %r1, %r1, STACKFRAME
srd %r3, %r3, %r5
blr
# endif
.LFE1:
.long 0
.byte 0,12,0,1,128,0,0,0
# if _CALL_ELF == 2
.size ffi_closure_LINUX64,.-ffi_closure_LINUX64
# else
# ifdef _CALL_LINUX
.size ffi_closure_LINUX64,.-.L.ffi_closure_LINUX64
# else
.size .ffi_closure_LINUX64,.-.ffi_closure_LINUX64
# endif
# endif
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:
.4byte 0x0 # CIE Identifier Tag
.byte 0x1 # CIE Version
.ascii "zR\0" # CIE Augmentation
.uleb128 0x1 # CIE Code Alignment Factor
.sleb128 -8 # CIE Data Alignment Factor
.byte 0x41 # CIE RA Column
.uleb128 0x1 # Augmentation size
.byte 0x14 # FDE Encoding (pcrel udata8)
.byte 0xc # DW_CFA_def_cfa
.uleb128 0x1
.uleb128 0x0
.align 3
.LECIE1:
.LSFDE1:
.4byte .LEFDE1-.LASFDE1 # FDE Length
.LASFDE1:
.4byte .LASFDE1-.Lframe1 # FDE CIE offset
.8byte .LFB1-. # FDE initial location
.8byte .LFE1-.LFB1 # FDE address range
.uleb128 0x0 # Augmentation size
.byte 0x2 # DW_CFA_advance_loc1
.byte .LCFI0-.LFB1
.byte 0xe # DW_CFA_def_cfa_offset
.uleb128 STACKFRAME
.byte 0x11 # DW_CFA_offset_extended_sf
.uleb128 0x41
.sleb128 -2
.align 3
.LEFDE1:
#endif
#if (defined __ELF__ && defined __linux__) || _CALL_ELF == 2
.section .note.GNU-stack,"",@progbits
#endif
|
