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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libffi/] [src/] [x86/] [win64.S] - Blame information for rev 745

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1 732 jeremybenn
#define LIBFFI_ASM
2
#include 
3
#include 
4
 
5
/* Constants for ffi_call_win64 */
6
#define STACK 0
7
#define PREP_ARGS_FN 32
8
#define ECIF 40
9
#define CIF_BYTES 48
10
#define CIF_FLAGS 56
11
#define RVALUE 64
12
#define FN 72
13
 
14
/* ffi_call_win64 (void (*prep_args_fn)(char *, extended_cif *),
15
                   extended_cif *ecif, unsigned bytes, unsigned flags,
16
                   unsigned *rvalue, void (*fn)());
17
 */
18
 
19
#ifdef _MSC_VER
20
PUBLIC  ffi_call_win64
21
 
22
EXTRN   __chkstk:NEAR
23
EXTRN   ffi_closure_win64_inner:NEAR
24
 
25
_TEXT   SEGMENT
26
 
27
;;; ffi_closure_win64 will be called with these registers set:
28
;;;    rax points to 'closure'
29
;;;    r11 contains a bit mask that specifies which of the
30
;;;    first four parameters are float or double
31
;;;
32
;;; It must move the parameters passed in registers to their stack location,
33
;;; call ffi_closure_win64_inner for the actual work, then return the result.
34
;;;
35
ffi_closure_win64 PROC FRAME
36
        ;; copy register arguments onto stack
37
        test    r11, 1
38
        jne     first_is_float
39
        mov     QWORD PTR [rsp+8], rcx
40
        jmp     second
41
first_is_float:
42
        movlpd  QWORD PTR [rsp+8], xmm0
43
 
44
second:
45
        test    r11, 2
46
        jne     second_is_float
47
        mov     QWORD PTR [rsp+16], rdx
48
        jmp     third
49
second_is_float:
50
        movlpd  QWORD PTR [rsp+16], xmm1
51
 
52
third:
53
        test    r11, 4
54
        jne     third_is_float
55
        mov     QWORD PTR [rsp+24], r8
56
        jmp     fourth
57
third_is_float:
58
        movlpd  QWORD PTR [rsp+24], xmm2
59
 
60
fourth:
61
        test    r11, 8
62
        jne     fourth_is_float
63
        mov     QWORD PTR [rsp+32], r9
64
        jmp     done
65
fourth_is_float:
66
        movlpd  QWORD PTR [rsp+32], xmm3
67
 
68
done:
69
        .ALLOCSTACK 40
70
        sub     rsp, 40
71
        .ENDPROLOG
72
        mov     rcx, rax        ; context is first parameter
73
        mov     rdx, rsp        ; stack is second parameter
74
        add     rdx, 48         ; point to start of arguments
75
        mov     rax, ffi_closure_win64_inner
76
        call    rax             ; call the real closure function
77
        add     rsp, 40
78
        movd    xmm0, rax       ; If the closure returned a float,
79
                                ; ffi_closure_win64_inner wrote it to rax
80
        ret     0
81
ffi_closure_win64 ENDP
82
 
83
ffi_call_win64 PROC FRAME
84
        ;; copy registers onto stack
85
        mov     QWORD PTR [rsp+32], r9
86
        mov     QWORD PTR [rsp+24], r8
87
        mov     QWORD PTR [rsp+16], rdx
88
        mov     QWORD PTR [rsp+8], rcx
89
        .PUSHREG rbp
90
        push    rbp
91
        .ALLOCSTACK 48
92
        sub     rsp, 48                                 ; 00000030H
93
        .SETFRAME rbp, 32
94
        lea     rbp, QWORD PTR [rsp+32]
95
        .ENDPROLOG
96
 
97
        mov     eax, DWORD PTR CIF_BYTES[rbp]
98
        add     rax, 15
99
        and     rax, -16
100
        call    __chkstk
101
        sub     rsp, rax
102
        lea     rax, QWORD PTR [rsp+32]
103
        mov     QWORD PTR STACK[rbp], rax
104
 
105
        mov     rdx, QWORD PTR ECIF[rbp]
106
        mov     rcx, QWORD PTR STACK[rbp]
107
        call    QWORD PTR PREP_ARGS_FN[rbp]
108
 
109
        mov     rsp, QWORD PTR STACK[rbp]
110
 
111
        movlpd  xmm3, QWORD PTR [rsp+24]
112
        movd    r9, xmm3
113
 
114
        movlpd  xmm2, QWORD PTR [rsp+16]
115
        movd    r8, xmm2
116
 
117
        movlpd  xmm1, QWORD PTR [rsp+8]
118
        movd    rdx, xmm1
119
 
120
        movlpd  xmm0, QWORD PTR [rsp]
121
        movd    rcx, xmm0
122
 
123
        call    QWORD PTR FN[rbp]
124
ret_struct4b$:
125
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SMALL_STRUCT_4B
126
        jne     ret_struct2b$
127
 
128
        mov     rcx, QWORD PTR RVALUE[rbp]
129
        mov     DWORD PTR [rcx], eax
130
        jmp     ret_void$
131
 
132
ret_struct2b$:
133
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SMALL_STRUCT_2B
134
        jne     ret_struct1b$
135
 
136
        mov     rcx, QWORD PTR RVALUE[rbp]
137
        mov     WORD PTR [rcx], ax
138
        jmp     ret_void$
139
 
140
ret_struct1b$:
141
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SMALL_STRUCT_1B
142
        jne     ret_uint8$
143
 
144
        mov     rcx, QWORD PTR RVALUE[rbp]
145
        mov     BYTE PTR [rcx], al
146
        jmp     ret_void$
147
 
148
ret_uint8$:
149
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_UINT8
150
        jne     ret_sint8$
151
 
152
        mov     rcx, QWORD PTR RVALUE[rbp]
153
        movzx   rax, al
154
        mov     QWORD PTR [rcx], rax
155
        jmp     ret_void$
156
 
157
ret_sint8$:
158
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SINT8
159
        jne     ret_uint16$
160
 
161
        mov     rcx, QWORD PTR RVALUE[rbp]
162
        movsx   rax, al
163
        mov     QWORD PTR [rcx], rax
164
        jmp     ret_void$
165
 
166
ret_uint16$:
167
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_UINT16
168
        jne     ret_sint16$
169
 
170
        mov     rcx, QWORD PTR RVALUE[rbp]
171
        movzx   rax, ax
172
        mov     QWORD PTR [rcx], rax
173
        jmp     SHORT ret_void$
174
 
175
ret_sint16$:
176
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SINT16
177
        jne     ret_uint32$
178
 
179
        mov     rcx, QWORD PTR RVALUE[rbp]
180
        movsx   rax, ax
181
        mov     QWORD PTR [rcx], rax
182
        jmp     SHORT ret_void$
183
 
184
ret_uint32$:
185
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_UINT32
186
        jne     ret_sint32$
187
 
188
        mov     rcx, QWORD PTR RVALUE[rbp]
189
        mov     eax, eax
190
        mov     QWORD PTR [rcx], rax
191
        jmp     SHORT ret_void$
192
 
193
ret_sint32$:
194
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SINT32
195
        jne     ret_float$
196
 
197
        mov     rcx, QWORD PTR RVALUE[rbp]
198
        cdqe
199
        mov     QWORD PTR [rcx], rax
200
        jmp     SHORT ret_void$
201
 
202
ret_float$:
203
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_FLOAT
204
        jne     SHORT ret_double$
205
 
206
        mov     rax, QWORD PTR RVALUE[rbp]
207
        movss   DWORD PTR [rax], xmm0
208
        jmp     SHORT ret_void$
209
 
210
ret_double$:
211
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_DOUBLE
212
        jne     SHORT ret_sint64$
213
 
214
        mov     rax, QWORD PTR RVALUE[rbp]
215
        movlpd  QWORD PTR [rax], xmm0
216
        jmp     SHORT ret_void$
217
 
218
ret_sint64$:
219
        cmp     DWORD PTR CIF_FLAGS[rbp], FFI_TYPE_SINT64
220
        jne     ret_void$
221
 
222
        mov     rcx, QWORD PTR RVALUE[rbp]
223
        mov     QWORD PTR [rcx], rax
224
        jmp     SHORT ret_void$
225
 
226
ret_void$:
227
        xor     rax, rax
228
 
229
        lea     rsp, QWORD PTR [rbp+16]
230
        pop     rbp
231
        ret     0
232
ffi_call_win64 ENDP
233
_TEXT   ENDS
234
END
235
#else
236
.text
237
 
238
.extern _ffi_closure_win64_inner
239
 
240
# ffi_closure_win64 will be called with these registers set:
241
#    rax points to 'closure'
242
#    r11 contains a bit mask that specifies which of the
243
#    first four parameters are float or double
244
#
245
# It must move the parameters passed in registers to their stack location,
246
# call ffi_closure_win64_inner for the actual work, then return the result.
247
#
248
        .balign 16
249
        .globl _ffi_closure_win64
250
_ffi_closure_win64:
251
        # copy register arguments onto stack
252
        test    $1,%r11
253
        jne     .Lfirst_is_float
254
        mov     %rcx, 8(%rsp)
255
        jmp     .Lsecond
256
.Lfirst_is_float:
257
        movlpd  %xmm0, 8(%rsp)
258
 
259
.Lsecond:
260
        test    $2, %r11
261
        jne     .Lsecond_is_float
262
        mov     %rdx, 16(%rsp)
263
        jmp     .Lthird
264
.Lsecond_is_float:
265
        movlpd  %xmm1, 16(%rsp)
266
 
267
.Lthird:
268
        test    $4, %r11
269
        jne     .Lthird_is_float
270
        mov     %r8,24(%rsp)
271
        jmp     .Lfourth
272
.Lthird_is_float:
273
        movlpd  %xmm2, 24(%rsp)
274
 
275
.Lfourth:
276
        test    $8, %r11
277
        jne     .Lfourth_is_float
278
        mov     %r9, 32(%rsp)
279
        jmp     .Ldone
280
.Lfourth_is_float:
281
        movlpd  %xmm3, 32(%rsp)
282
 
283
.Ldone:
284
#.ALLOCSTACK 40
285
        sub     $40, %rsp
286
#.ENDPROLOG
287
        mov     %rax, %rcx      # context is first parameter
288
        mov     %rsp, %rdx      # stack is second parameter
289
        add     $48, %rdx       # point to start of arguments
290
        mov     $_ffi_closure_win64_inner, %rax
291
        callq   *%rax           # call the real closure function
292
        add     $40, %rsp
293
        movq    %rax, %xmm0     # If the closure returned a float,
294
                                # ffi_closure_win64_inner wrote it to rax
295
        retq
296
.ffi_closure_win64_end:
297
 
298
        .balign 16
299
        .globl  _ffi_call_win64
300
_ffi_call_win64:
301
        # copy registers onto stack
302
        mov     %r9,32(%rsp)
303
        mov     %r8,24(%rsp)
304
        mov     %rdx,16(%rsp)
305
        mov     %rcx,8(%rsp)
306
        #.PUSHREG rbp
307
        push    %rbp
308
        #.ALLOCSTACK 48
309
        sub     $48,%rsp
310
        #.SETFRAME rbp, 32
311
        lea     32(%rsp),%rbp
312
        #.ENDPROLOG
313
 
314
        mov     CIF_BYTES(%rbp),%eax
315
        add     $15, %rax
316
        and     $-16, %rax
317
        cmpq    $0x1000, %rax
318
        jb      Lch_done
319
Lch_probe:
320
        subq    $0x1000,%rsp
321
        orl     $0x0, (%rsp)
322
        subq    $0x1000,%rax
323
        cmpq    $0x1000,%rax
324
        ja      Lch_probe
325
Lch_done:
326
        subq    %rax, %rsp
327
        orl     $0x0, (%rsp)
328
        lea     32(%rsp), %rax
329
        mov     %rax, STACK(%rbp)
330
 
331
        mov     ECIF(%rbp), %rdx
332
        mov     STACK(%rbp), %rcx
333
        callq   *PREP_ARGS_FN(%rbp)
334
 
335
        mov     STACK(%rbp), %rsp
336
 
337
        movlpd  24(%rsp), %xmm3
338
        movd    %xmm3, %r9
339
 
340
        movlpd  16(%rsp), %xmm2
341
        movd    %xmm2, %r8
342
 
343
        movlpd  8(%rsp), %xmm1
344
        movd    %xmm1, %rdx
345
 
346
        movlpd  (%rsp), %xmm0
347
        movd    %xmm0, %rcx
348
 
349
        callq   *FN(%rbp)
350
.Lret_struct4b:
351
        cmpl    $FFI_TYPE_SMALL_STRUCT_4B, CIF_FLAGS(%rbp)
352
        jne .Lret_struct2b
353
 
354
        mov     RVALUE(%rbp), %rcx
355
        mov     %eax, (%rcx)
356
        jmp     .Lret_void
357
 
358
.Lret_struct2b:
359
        cmpl    $FFI_TYPE_SMALL_STRUCT_2B, CIF_FLAGS(%rbp)
360
        jne .Lret_struct1b
361
 
362
        mov     RVALUE(%rbp), %rcx
363
        mov     %ax, (%rcx)
364
        jmp .Lret_void
365
 
366
.Lret_struct1b:
367
        cmpl    $FFI_TYPE_SMALL_STRUCT_1B, CIF_FLAGS(%rbp)
368
        jne .Lret_uint8
369
 
370
        mov     RVALUE(%rbp), %rcx
371
        mov     %al, (%rcx)
372
        jmp .Lret_void
373
 
374
.Lret_uint8:
375
        cmpl    $FFI_TYPE_UINT8, CIF_FLAGS(%rbp)
376
        jne .Lret_sint8
377
 
378
        mov     RVALUE(%rbp), %rcx
379
        movzbq  %al, %rax
380
        movq    %rax, (%rcx)
381
        jmp .Lret_void
382
 
383
.Lret_sint8:
384
        cmpl    $FFI_TYPE_SINT8, CIF_FLAGS(%rbp)
385
        jne .Lret_uint16
386
 
387
        mov     RVALUE(%rbp), %rcx
388
        movsbq  %al, %rax
389
        movq    %rax, (%rcx)
390
        jmp .Lret_void
391
 
392
.Lret_uint16:
393
        cmpl    $FFI_TYPE_UINT16, CIF_FLAGS(%rbp)
394
        jne .Lret_sint16
395
 
396
        mov     RVALUE(%rbp), %rcx
397
        movzwq  %ax, %rax
398
        movq    %rax, (%rcx)
399
        jmp .Lret_void
400
 
401
.Lret_sint16:
402
        cmpl    $FFI_TYPE_SINT16, CIF_FLAGS(%rbp)
403
        jne .Lret_uint32
404
 
405
        mov     RVALUE(%rbp), %rcx
406
        movswq  %ax, %rax
407
        movq    %rax, (%rcx)
408
        jmp .Lret_void
409
 
410
.Lret_uint32:
411
        cmpl    $FFI_TYPE_UINT32, CIF_FLAGS(%rbp)
412
        jne .Lret_sint32
413
 
414
        mov     RVALUE(%rbp), %rcx
415
        movl    %eax, %eax
416
        movq    %rax, (%rcx)
417
        jmp .Lret_void
418
 
419
.Lret_sint32:
420
        cmpl    $FFI_TYPE_SINT32, CIF_FLAGS(%rbp)
421
        jne     .Lret_float
422
 
423
        mov     RVALUE(%rbp), %rcx
424
        cltq
425
        movq    %rax, (%rcx)
426
        jmp     .Lret_void
427
 
428
.Lret_float:
429
        cmpl    $FFI_TYPE_FLOAT, CIF_FLAGS(%rbp)
430
        jne     .Lret_double
431
 
432
        mov     RVALUE(%rbp), %rax
433
        movss   %xmm0, (%rax)
434
        jmp     .Lret_void
435
 
436
.Lret_double:
437
        cmpl    $FFI_TYPE_DOUBLE, CIF_FLAGS(%rbp)
438
        jne     .Lret_sint64
439
 
440
        mov     RVALUE(%rbp), %rax
441
        movlpd  %xmm0, (%rax)
442
        jmp     .Lret_void
443
 
444
.Lret_sint64:
445
        cmpl    $FFI_TYPE_SINT64, CIF_FLAGS(%rbp)
446
        jne     .Lret_void
447
 
448
        mov     RVALUE(%rbp), %rcx
449
        mov     %rax, (%rcx)
450
        jmp     .Lret_void
451
 
452
.Lret_void:
453
        xor     %rax, %rax
454
 
455
        lea     16(%rbp), %rsp
456
        pop     %rbp
457
        retq
458
.ffi_call_win64_end:
459
#endif /* !_MSC_VER */
460
 

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