media/libyuv/source/x86inc.asm@b8a032363ba2
media/libyuv/source/x86inc.asm
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
1 ;*****************************************************************************
2 ;* x86inc.asm: x264asm abstraction layer
3 ;*****************************************************************************
4 ;* Copyright (C) 2005-2012 x264 project
5 ;*
6 ;* Authors: Loren Merritt <lorenm@u.washington.edu>
7 ;* Anton Mitrofanov <BugMaster@narod.ru>
8 ;* Jason Garrett-Glaser <darkshikari@gmail.com>
9 ;* Henrik Gramner <hengar-6@student.ltu.se>
10 ;*
11 ;* Permission to use, copy, modify, and/or 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 ;*****************************************************************************
24 ; This is a header file for the x264ASM assembly language, which uses
25 ; NASM/YASM syntax combined with a large number of macros to provide easy
26 ; abstraction between different calling conventions (x86_32, win64, linux64).
27 ; It also has various other useful features to simplify writing the kind of
28 ; DSP functions that are most often used in x264.
30 ; Unlike the rest of x264, this file is available under an ISC license, as it
31 ; has significant usefulness outside of x264 and we want it to be available
32 ; to the largest audience possible. Of course, if you modify it for your own
33 ; purposes to add a new feature, we strongly encourage contributing a patch
34 ; as this feature might be useful for others as well. Send patches or ideas
35 ; to x264-devel@videolan.org .
37 ; Local changes for libyuv:
38 ; remove %define program_name and references in labels
39 ; rename cpus to uppercase
41 %define WIN64 0
42 %define UNIX64 0
43 %if ARCH_X86_64
44 %ifidn __OUTPUT_FORMAT__,win32
45 %define WIN64 1
46 %elifidn __OUTPUT_FORMAT__,win64
47 %define WIN64 1
48 %else
49 %define UNIX64 1
50 %endif
51 %endif
53 %ifdef PREFIX
54 %define mangle(x) _ %+ x
55 %else
56 %define mangle(x) x
57 %endif
59 ; Name of the .rodata section.
60 ; Kludge: Something on OS X fails to align .rodata even given an align attribute,
61 ; so use a different read-only section.
62 %macro SECTION_RODATA 0-1 16
63 %ifidn __OUTPUT_FORMAT__,macho64
64 SECTION .text align=%1
65 %elifidn __OUTPUT_FORMAT__,macho
66 SECTION .text align=%1
67 fakegot:
68 %elifidn __OUTPUT_FORMAT__,aout
69 section .text
70 %else
71 SECTION .rodata align=%1
72 %endif
73 %endmacro
75 ; aout does not support align=
76 %macro SECTION_TEXT 0-1 16
77 %ifidn __OUTPUT_FORMAT__,aout
78 SECTION .text
79 %else
80 SECTION .text align=%1
81 %endif
82 %endmacro
84 %if WIN64
85 %define PIC
86 %elif ARCH_X86_64 == 0
87 ; x86_32 doesn't require PIC.
88 ; Some distros prefer shared objects to be PIC, but nothing breaks if
89 ; the code contains a few textrels, so we'll skip that complexity.
90 %undef PIC
91 %endif
92 %ifdef PIC
93 default rel
94 %endif
96 ; Always use long nops (reduces 0x90 spam in disassembly on x86_32)
97 CPU amdnop
99 ; Macros to eliminate most code duplication between x86_32 and x86_64:
100 ; Currently this works only for leaf functions which load all their arguments
101 ; into registers at the start, and make no other use of the stack. Luckily that
102 ; covers most of x264's asm.
104 ; PROLOGUE:
105 ; %1 = number of arguments. loads them from stack if needed.
106 ; %2 = number of registers used. pushes callee-saved regs if needed.
107 ; %3 = number of xmm registers used. pushes callee-saved xmm regs if needed.
108 ; %4 = list of names to define to registers
109 ; PROLOGUE can also be invoked by adding the same options to cglobal
111 ; e.g.
112 ; cglobal foo, 2,3,0, dst, src, tmp
113 ; declares a function (foo), taking two args (dst and src) and one local variable (tmp)
115 ; TODO Some functions can use some args directly from the stack. If they're the
116 ; last args then you can just not declare them, but if they're in the middle
117 ; we need more flexible macro.
119 ; RET:
120 ; Pops anything that was pushed by PROLOGUE, and returns.
122 ; REP_RET:
123 ; Same, but if it doesn't pop anything it becomes a 2-byte ret, for athlons
124 ; which are slow when a normal ret follows a branch.
126 ; registers:
127 ; rN and rNq are the native-size register holding function argument N
128 ; rNd, rNw, rNb are dword, word, and byte size
129 ; rNh is the high 8 bits of the word size
130 ; rNm is the original location of arg N (a register or on the stack), dword
131 ; rNmp is native size
133 %macro DECLARE_REG 2-3
134 %define r%1q %2
135 %define r%1d %2d
136 %define r%1w %2w
137 %define r%1b %2b
138 %define r%1h %2h
139 %if %0 == 2
140 %define r%1m %2d
141 %define r%1mp %2
142 %elif ARCH_X86_64 ; memory
143 %define r%1m [rsp + stack_offset + %3]
144 %define r%1mp qword r %+ %1m
145 %else
146 %define r%1m [esp + stack_offset + %3]
147 %define r%1mp dword r %+ %1m
148 %endif
149 %define r%1 %2
150 %endmacro
152 %macro DECLARE_REG_SIZE 3
153 %define r%1q r%1
154 %define e%1q r%1
155 %define r%1d e%1
156 %define e%1d e%1
157 %define r%1w %1
158 %define e%1w %1
159 %define r%1h %3
160 %define e%1h %3
161 %define r%1b %2
162 %define e%1b %2
163 %if ARCH_X86_64 == 0
164 %define r%1 e%1
165 %endif
166 %endmacro
168 DECLARE_REG_SIZE ax, al, ah
169 DECLARE_REG_SIZE bx, bl, bh
170 DECLARE_REG_SIZE cx, cl, ch
171 DECLARE_REG_SIZE dx, dl, dh
172 DECLARE_REG_SIZE si, sil, null
173 DECLARE_REG_SIZE di, dil, null
174 DECLARE_REG_SIZE bp, bpl, null
176 ; t# defines for when per-arch register allocation is more complex than just function arguments
178 %macro DECLARE_REG_TMP 1-*
179 %assign %%i 0
180 %rep %0
181 CAT_XDEFINE t, %%i, r%1
182 %assign %%i %%i+1
183 %rotate 1
184 %endrep
185 %endmacro
187 %macro DECLARE_REG_TMP_SIZE 0-*
188 %rep %0
189 %define t%1q t%1 %+ q
190 %define t%1d t%1 %+ d
191 %define t%1w t%1 %+ w
192 %define t%1h t%1 %+ h
193 %define t%1b t%1 %+ b
194 %rotate 1
195 %endrep
196 %endmacro
198 DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
200 %if ARCH_X86_64
201 %define gprsize 8
202 %else
203 %define gprsize 4
204 %endif
206 %macro PUSH 1
207 push %1
208 %assign stack_offset stack_offset+gprsize
209 %endmacro
211 %macro POP 1
212 pop %1
213 %assign stack_offset stack_offset-gprsize
214 %endmacro
216 %macro PUSH_IF_USED 1-*
217 %rep %0
218 %if %1 < regs_used
219 PUSH r%1
220 %endif
221 %rotate 1
222 %endrep
223 %endmacro
225 %macro POP_IF_USED 1-*
226 %rep %0
227 %if %1 < regs_used
228 pop r%1
229 %endif
230 %rotate 1
231 %endrep
232 %endmacro
234 %macro LOAD_IF_USED 1-*
235 %rep %0
236 %if %1 < num_args
237 mov r%1, r %+ %1 %+ mp
238 %endif
239 %rotate 1
240 %endrep
241 %endmacro
243 %macro SUB 2
244 sub %1, %2
245 %ifidn %1, rsp
246 %assign stack_offset stack_offset+(%2)
247 %endif
248 %endmacro
250 %macro ADD 2
251 add %1, %2
252 %ifidn %1, rsp
253 %assign stack_offset stack_offset-(%2)
254 %endif
255 %endmacro
257 %macro movifnidn 2
258 %ifnidn %1, %2
259 mov %1, %2
260 %endif
261 %endmacro
263 %macro movsxdifnidn 2
264 %ifnidn %1, %2
265 movsxd %1, %2
266 %endif
267 %endmacro
269 %macro ASSERT 1
270 %if (%1) == 0
271 %error assert failed
272 %endif
273 %endmacro
275 %macro DEFINE_ARGS 0-*
276 %ifdef n_arg_names
277 %assign %%i 0
278 %rep n_arg_names
279 CAT_UNDEF arg_name %+ %%i, q
280 CAT_UNDEF arg_name %+ %%i, d
281 CAT_UNDEF arg_name %+ %%i, w
282 CAT_UNDEF arg_name %+ %%i, h
283 CAT_UNDEF arg_name %+ %%i, b
284 CAT_UNDEF arg_name %+ %%i, m
285 CAT_UNDEF arg_name %+ %%i, mp
286 CAT_UNDEF arg_name, %%i
287 %assign %%i %%i+1
288 %endrep
289 %endif
291 %xdefine %%stack_offset stack_offset
292 %undef stack_offset ; so that the current value of stack_offset doesn't get baked in by xdefine
293 %assign %%i 0
294 %rep %0
295 %xdefine %1q r %+ %%i %+ q
296 %xdefine %1d r %+ %%i %+ d
297 %xdefine %1w r %+ %%i %+ w
298 %xdefine %1h r %+ %%i %+ h
299 %xdefine %1b r %+ %%i %+ b
300 %xdefine %1m r %+ %%i %+ m
301 %xdefine %1mp r %+ %%i %+ mp
302 CAT_XDEFINE arg_name, %%i, %1
303 %assign %%i %%i+1
304 %rotate 1
305 %endrep
306 %xdefine stack_offset %%stack_offset
307 %assign n_arg_names %0
308 %endmacro
310 %if WIN64 ; Windows x64 ;=================================================
312 DECLARE_REG 0, rcx
313 DECLARE_REG 1, rdx
314 DECLARE_REG 2, R8
315 DECLARE_REG 3, R9
316 DECLARE_REG 4, R10, 40
317 DECLARE_REG 5, R11, 48
318 DECLARE_REG 6, rax, 56
319 DECLARE_REG 7, rdi, 64
320 DECLARE_REG 8, rsi, 72
321 DECLARE_REG 9, rbx, 80
322 DECLARE_REG 10, rbp, 88
323 DECLARE_REG 11, R12, 96
324 DECLARE_REG 12, R13, 104
325 DECLARE_REG 13, R14, 112
326 DECLARE_REG 14, R15, 120
328 %macro PROLOGUE 2-4+ 0 ; #args, #regs, #xmm_regs, arg_names...
329 %assign num_args %1
330 %assign regs_used %2
331 ASSERT regs_used >= num_args
332 ASSERT regs_used <= 15
333 PUSH_IF_USED 7, 8, 9, 10, 11, 12, 13, 14
334 %if mmsize == 8
335 %assign xmm_regs_used 0
336 %else
337 WIN64_SPILL_XMM %3
338 %endif
339 LOAD_IF_USED 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
340 DEFINE_ARGS %4
341 %endmacro
343 %macro WIN64_SPILL_XMM 1
344 %assign xmm_regs_used %1
345 ASSERT xmm_regs_used <= 16
346 %if xmm_regs_used > 6
347 SUB rsp, (xmm_regs_used-6)*16+16
348 %assign %%i xmm_regs_used
349 %rep (xmm_regs_used-6)
350 %assign %%i %%i-1
351 movdqa [rsp + (%%i-6)*16+(~stack_offset&8)], xmm %+ %%i
352 %endrep
353 %endif
354 %endmacro
356 %macro WIN64_RESTORE_XMM_INTERNAL 1
357 %if xmm_regs_used > 6
358 %assign %%i xmm_regs_used
359 %rep (xmm_regs_used-6)
360 %assign %%i %%i-1
361 movdqa xmm %+ %%i, [%1 + (%%i-6)*16+(~stack_offset&8)]
362 %endrep
363 add %1, (xmm_regs_used-6)*16+16
364 %endif
365 %endmacro
367 %macro WIN64_RESTORE_XMM 1
368 WIN64_RESTORE_XMM_INTERNAL %1
369 %assign stack_offset stack_offset-(xmm_regs_used-6)*16+16
370 %assign xmm_regs_used 0
371 %endmacro
373 %define has_epilogue regs_used > 7 || xmm_regs_used > 6 || mmsize == 32
375 %macro RET 0
376 WIN64_RESTORE_XMM_INTERNAL rsp
377 POP_IF_USED 14, 13, 12, 11, 10, 9, 8, 7
378 %if mmsize == 32
379 vzeroupper
380 %endif
381 ret
382 %endmacro
384 %elif ARCH_X86_64 ; *nix x64 ;=============================================
386 DECLARE_REG 0, rdi
387 DECLARE_REG 1, rsi
388 DECLARE_REG 2, rdx
389 DECLARE_REG 3, rcx
390 DECLARE_REG 4, R8
391 DECLARE_REG 5, R9
392 DECLARE_REG 6, rax, 8
393 DECLARE_REG 7, R10, 16
394 DECLARE_REG 8, R11, 24
395 DECLARE_REG 9, rbx, 32
396 DECLARE_REG 10, rbp, 40
397 DECLARE_REG 11, R12, 48
398 DECLARE_REG 12, R13, 56
399 DECLARE_REG 13, R14, 64
400 DECLARE_REG 14, R15, 72
402 %macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
403 %assign num_args %1
404 %assign regs_used %2
405 ASSERT regs_used >= num_args
406 ASSERT regs_used <= 15
407 PUSH_IF_USED 9, 10, 11, 12, 13, 14
408 LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14
409 DEFINE_ARGS %4
410 %endmacro
412 %define has_epilogue regs_used > 9 || mmsize == 32
414 %macro RET 0
415 POP_IF_USED 14, 13, 12, 11, 10, 9
416 %if mmsize == 32
417 vzeroupper
418 %endif
419 ret
420 %endmacro
422 %else ; X86_32 ;==============================================================
424 DECLARE_REG 0, eax, 4
425 DECLARE_REG 1, ecx, 8
426 DECLARE_REG 2, edx, 12
427 DECLARE_REG 3, ebx, 16
428 DECLARE_REG 4, esi, 20
429 DECLARE_REG 5, edi, 24
430 DECLARE_REG 6, ebp, 28
431 %define rsp esp
433 %macro DECLARE_ARG 1-*
434 %rep %0
435 %define r%1m [esp + stack_offset + 4*%1 + 4]
436 %define r%1mp dword r%1m
437 %rotate 1
438 %endrep
439 %endmacro
441 DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
443 %macro PROLOGUE 2-4+ ; #args, #regs, #xmm_regs, arg_names...
444 %assign num_args %1
445 %assign regs_used %2
446 %if regs_used > 7
447 %assign regs_used 7
448 %endif
449 ASSERT regs_used >= num_args
450 PUSH_IF_USED 3, 4, 5, 6
451 LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6
452 DEFINE_ARGS %4
453 %endmacro
455 %define has_epilogue regs_used > 3 || mmsize == 32
457 %macro RET 0
458 POP_IF_USED 6, 5, 4, 3
459 %if mmsize == 32
460 vzeroupper
461 %endif
462 ret
463 %endmacro
465 %endif ;======================================================================
467 %if WIN64 == 0
468 %macro WIN64_SPILL_XMM 1
469 %endmacro
470 %macro WIN64_RESTORE_XMM 1
471 %endmacro
472 %endif
474 %macro REP_RET 0
475 %if has_epilogue
476 RET
477 %else
478 rep ret
479 %endif
480 %endmacro
482 %macro TAIL_CALL 2 ; callee, is_nonadjacent
483 %if has_epilogue
484 call %1
485 RET
486 %elif %2
487 jmp %1
488 %endif
489 %endmacro
491 ;=============================================================================
492 ; arch-independent part
493 ;=============================================================================
495 %assign function_align 16
497 ; Begin a function.
498 ; Applies any symbol mangling needed for C linkage, and sets up a define such that
499 ; subsequent uses of the function name automatically refer to the mangled version.
500 ; Appends cpuflags to the function name if cpuflags has been specified.
501 %macro cglobal 1-2+ ; name, [PROLOGUE args]
502 %if %0 == 1
503 cglobal_internal %1 %+ SUFFIX
504 %else
505 cglobal_internal %1 %+ SUFFIX, %2
506 %endif
507 %endmacro
508 %macro cglobal_internal 1-2+
509 %ifndef cglobaled_%1
510 %xdefine %1 mangle(%1)
511 %xdefine %1.skip_prologue %1 %+ .skip_prologue
512 CAT_XDEFINE cglobaled_, %1, 1
513 %endif
514 %xdefine current_function %1
515 %ifidn __OUTPUT_FORMAT__,elf
516 global %1:function hidden
517 %else
518 global %1
519 %endif
520 align function_align
521 %1:
522 RESET_MM_PERMUTATION ; not really needed, but makes disassembly somewhat nicer
523 %assign stack_offset 0
524 %if %0 > 1
525 PROLOGUE %2
526 %endif
527 %endmacro
529 %macro cextern 1
530 %xdefine %1 mangle(%1)
531 CAT_XDEFINE cglobaled_, %1, 1
532 extern %1
533 %endmacro
535 ; like cextern, but without the prefix
536 %macro cextern_naked 1
537 %xdefine %1 mangle(%1)
538 CAT_XDEFINE cglobaled_, %1, 1
539 extern %1
540 %endmacro
542 %macro const 2+
543 %xdefine %1 mangle(%1)
544 global %1
545 %1: %2
546 %endmacro
548 ; This is needed for ELF, otherwise the GNU linker assumes the stack is
549 ; executable by default.
550 %ifidn __OUTPUT_FORMAT__,elf
551 SECTION .note.GNU-stack noalloc noexec nowrite progbits
552 %endif
553 %ifidn __OUTPUT_FORMAT__,elf32
554 section .note.GNU-stack noalloc noexec nowrite progbits
555 %endif
556 %ifidn __OUTPUT_FORMAT__,elf64
557 section .note.GNU-stack noalloc noexec nowrite progbits
558 %endif
560 ; cpuflags
562 %assign cpuflags_MMX (1<<0)
563 %assign cpuflags_MMX2 (1<<1) | cpuflags_MMX
564 %assign cpuflags_3dnow (1<<2) | cpuflags_MMX
565 %assign cpuflags_3dnow2 (1<<3) | cpuflags_3dnow
566 %assign cpuflags_SSE (1<<4) | cpuflags_MMX2
567 %assign cpuflags_SSE2 (1<<5) | cpuflags_SSE
568 %assign cpuflags_SSE2slow (1<<6) | cpuflags_SSE2
569 %assign cpuflags_SSE3 (1<<7) | cpuflags_SSE2
570 %assign cpuflags_SSSE3 (1<<8) | cpuflags_SSE3
571 %assign cpuflags_SSE4 (1<<9) | cpuflags_SSSE3
572 %assign cpuflags_SSE42 (1<<10)| cpuflags_SSE4
573 %assign cpuflags_AVX (1<<11)| cpuflags_SSE42
574 %assign cpuflags_xop (1<<12)| cpuflags_AVX
575 %assign cpuflags_fma4 (1<<13)| cpuflags_AVX
576 %assign cpuflags_AVX2 (1<<14)| cpuflags_AVX
577 %assign cpuflags_fma3 (1<<15)| cpuflags_AVX
579 %assign cpuflags_cache32 (1<<16)
580 %assign cpuflags_cache64 (1<<17)
581 %assign cpuflags_slowctz (1<<18)
582 %assign cpuflags_lzcnt (1<<19)
583 %assign cpuflags_misalign (1<<20)
584 %assign cpuflags_aligned (1<<21) ; not a cpu feature, but a function variant
585 %assign cpuflags_atom (1<<22)
586 %assign cpuflags_bmi1 (1<<23)
587 %assign cpuflags_bmi2 (1<<24)|cpuflags_bmi1
588 %assign cpuflags_tbm (1<<25)|cpuflags_bmi1
590 %define cpuflag(x) ((cpuflags & (cpuflags_ %+ x)) == (cpuflags_ %+ x))
591 %define notcpuflag(x) ((cpuflags & (cpuflags_ %+ x)) != (cpuflags_ %+ x))
593 ; Takes up to 2 cpuflags from the above list.
594 ; All subsequent functions (up to the next INIT_CPUFLAGS) is built for the specified cpu.
595 ; You shouldn't need to invoke this macro directly, it's a subroutine for INIT_MMX &co.
596 %macro INIT_CPUFLAGS 0-2
597 %if %0 >= 1
598 %xdefine cpuname %1
599 %assign cpuflags cpuflags_%1
600 %if %0 >= 2
601 %xdefine cpuname %1_%2
602 %assign cpuflags cpuflags | cpuflags_%2
603 %endif
604 %xdefine SUFFIX _ %+ cpuname
605 %if cpuflag(AVX)
606 %assign AVX_enabled 1
607 %endif
608 %if mmsize == 16 && notcpuflag(SSE2)
609 %define mova movaps
610 %define movu movups
611 %define movnta movntps
612 %endif
613 %if cpuflag(aligned)
614 %define movu mova
615 %elifidn %1, SSE3
616 %define movu lddqu
617 %endif
618 %else
619 %xdefine SUFFIX
620 %undef cpuname
621 %undef cpuflags
622 %endif
623 %endmacro
625 ; merge MMX and SSE*
627 %macro CAT_XDEFINE 3
628 %xdefine %1%2 %3
629 %endmacro
631 %macro CAT_UNDEF 2
632 %undef %1%2
633 %endmacro
635 %macro INIT_MMX 0-1+
636 %assign AVX_enabled 0
637 %define RESET_MM_PERMUTATION INIT_MMX %1
638 %define mmsize 8
639 %define num_mmregs 8
640 %define mova movq
641 %define movu movq
642 %define movh movd
643 %define movnta movntq
644 %assign %%i 0
645 %rep 8
646 CAT_XDEFINE m, %%i, mm %+ %%i
647 CAT_XDEFINE nmm, %%i, %%i
648 %assign %%i %%i+1
649 %endrep
650 %rep 8
651 CAT_UNDEF m, %%i
652 CAT_UNDEF nmm, %%i
653 %assign %%i %%i+1
654 %endrep
655 INIT_CPUFLAGS %1
656 %endmacro
658 %macro INIT_XMM 0-1+
659 %assign AVX_enabled 0
660 %define RESET_MM_PERMUTATION INIT_XMM %1
661 %define mmsize 16
662 %define num_mmregs 8
663 %if ARCH_X86_64
664 %define num_mmregs 16
665 %endif
666 %define mova movdqa
667 %define movu movdqu
668 %define movh movq
669 %define movnta movntdq
670 %assign %%i 0
671 %rep num_mmregs
672 CAT_XDEFINE m, %%i, xmm %+ %%i
673 CAT_XDEFINE nxmm, %%i, %%i
674 %assign %%i %%i+1
675 %endrep
676 INIT_CPUFLAGS %1
677 %endmacro
679 %macro INIT_YMM 0-1+
680 %assign AVX_enabled 1
681 %define RESET_MM_PERMUTATION INIT_YMM %1
682 %define mmsize 32
683 %define num_mmregs 8
684 %if ARCH_X86_64
685 %define num_mmregs 16
686 %endif
687 %define mova vmovaps
688 %define movu vmovups
689 %undef movh
690 %define movnta vmovntps
691 %assign %%i 0
692 %rep num_mmregs
693 CAT_XDEFINE m, %%i, ymm %+ %%i
694 CAT_XDEFINE nymm, %%i, %%i
695 %assign %%i %%i+1
696 %endrep
697 INIT_CPUFLAGS %1
698 %endmacro
700 INIT_XMM
702 ; I often want to use macros that permute their arguments. e.g. there's no
703 ; efficient way to implement butterfly or transpose or dct without swapping some
704 ; arguments.
705 ;
706 ; I would like to not have to manually keep track of the permutations:
707 ; If I insert a permutation in the middle of a function, it should automatically
708 ; change everything that follows. For more complex macros I may also have multiple
709 ; implementations, e.g. the SSE2 and SSSE3 versions may have different permutations.
710 ;
711 ; Hence these macros. Insert a PERMUTE or some SWAPs at the end of a macro that
712 ; permutes its arguments. It's equivalent to exchanging the contents of the
713 ; registers, except that this way you exchange the register names instead, so it
714 ; doesn't cost any cycles.
716 %macro PERMUTE 2-* ; takes a list of pairs to swap
717 %rep %0/2
718 %xdefine tmp%2 m%2
719 %xdefine ntmp%2 nm%2
720 %rotate 2
721 %endrep
722 %rep %0/2
723 %xdefine m%1 tmp%2
724 %xdefine nm%1 ntmp%2
725 %undef tmp%2
726 %undef ntmp%2
727 %rotate 2
728 %endrep
729 %endmacro
731 %macro SWAP 2-* ; swaps a single chain (sometimes more concise than pairs)
732 %rep %0-1
733 %ifdef m%1
734 %xdefine tmp m%1
735 %xdefine m%1 m%2
736 %xdefine m%2 tmp
737 CAT_XDEFINE n, m%1, %1
738 CAT_XDEFINE n, m%2, %2
739 %else
740 ; If we were called as "SWAP m0,m1" rather than "SWAP 0,1" infer the original numbers here.
741 ; Be careful using this mode in nested macros though, as in some cases there may be
742 ; other copies of m# that have already been dereferenced and don't get updated correctly.
743 %xdefine %%n1 n %+ %1
744 %xdefine %%n2 n %+ %2
745 %xdefine tmp m %+ %%n1
746 CAT_XDEFINE m, %%n1, m %+ %%n2
747 CAT_XDEFINE m, %%n2, tmp
748 CAT_XDEFINE n, m %+ %%n1, %%n1
749 CAT_XDEFINE n, m %+ %%n2, %%n2
750 %endif
751 %undef tmp
752 %rotate 1
753 %endrep
754 %endmacro
756 ; If SAVE_MM_PERMUTATION is placed at the end of a function, then any later
757 ; calls to that function will automatically load the permutation, so values can
758 ; be returned in mmregs.
759 %macro SAVE_MM_PERMUTATION 0-1
760 %if %0
761 %xdefine %%f %1_m
762 %else
763 %xdefine %%f current_function %+ _m
764 %endif
765 %assign %%i 0
766 %rep num_mmregs
767 CAT_XDEFINE %%f, %%i, m %+ %%i
768 %assign %%i %%i+1
769 %endrep
770 %endmacro
772 %macro LOAD_MM_PERMUTATION 1 ; name to load from
773 %ifdef %1_m0
774 %assign %%i 0
775 %rep num_mmregs
776 CAT_XDEFINE m, %%i, %1_m %+ %%i
777 CAT_XDEFINE n, m %+ %%i, %%i
778 %assign %%i %%i+1
779 %endrep
780 %endif
781 %endmacro
783 ; Append cpuflags to the callee's name iff the appended name is known and the plain name isn't
784 %macro call 1
785 call_internal %1, %1 %+ SUFFIX
786 %endmacro
787 %macro call_internal 2
788 %xdefine %%i %1
789 %ifndef cglobaled_%1
790 %ifdef cglobaled_%2
791 %xdefine %%i %2
792 %endif
793 %endif
794 call %%i
795 LOAD_MM_PERMUTATION %%i
796 %endmacro
798 ; Substitutions that reduce instruction size but are functionally equivalent
799 %macro add 2
800 %ifnum %2
801 %if %2==128
802 sub %1, -128
803 %else
804 add %1, %2
805 %endif
806 %else
807 add %1, %2
808 %endif
809 %endmacro
811 %macro sub 2
812 %ifnum %2
813 %if %2==128
814 add %1, -128
815 %else
816 sub %1, %2
817 %endif
818 %else
819 sub %1, %2
820 %endif
821 %endmacro
823 ;=============================================================================
824 ; AVX abstraction layer
825 ;=============================================================================
827 %assign i 0
828 %rep 16
829 %if i < 8
830 CAT_XDEFINE sizeofmm, i, 8
831 %endif
832 CAT_XDEFINE sizeofxmm, i, 16
833 CAT_XDEFINE sizeofymm, i, 32
834 %assign i i+1
835 %endrep
836 %undef i
838 %macro CHECK_AVX_INSTR_EMU 3-*
839 %xdefine %%opcode %1
840 %xdefine %%dst %2
841 %rep %0-2
842 %ifidn %%dst, %3
843 %error non-AVX emulation of ``%%opcode'' is not supported
844 %endif
845 %rotate 1
846 %endrep
847 %endmacro
849 ;%1 == instruction
850 ;%2 == 1 if float, 0 if int
851 ;%3 == 1 if 4-operand (xmm, xmm, xmm, imm), 0 if 2- or 3-operand (xmm, xmm, xmm)
852 ;%4 == number of operands given
853 ;%5+: operands
854 %macro RUN_AVX_INSTR 6-7+
855 %ifid %6
856 %define %%sizeofreg sizeof%6
857 %elifid %5
858 %define %%sizeofreg sizeof%5
859 %else
860 %define %%sizeofreg mmsize
861 %endif
862 %if %%sizeofreg==32
863 %if %4>=3
864 v%1 %5, %6, %7
865 %else
866 v%1 %5, %6
867 %endif
868 %else
869 %if %%sizeofreg==8
870 %define %%regmov movq
871 %elif %2
872 %define %%regmov movaps
873 %else
874 %define %%regmov movdqa
875 %endif
877 %if %4>=3+%3
878 %ifnidn %5, %6
879 %if AVX_enabled && %%sizeofreg==16
880 v%1 %5, %6, %7
881 %else
882 CHECK_AVX_INSTR_EMU {%1 %5, %6, %7}, %5, %7
883 %%regmov %5, %6
884 %1 %5, %7
885 %endif
886 %else
887 %1 %5, %7
888 %endif
889 %elif %4>=3
890 %1 %5, %6, %7
891 %else
892 %1 %5, %6
893 %endif
894 %endif
895 %endmacro
897 ; 3arg AVX ops with a memory arg can only have it in src2,
898 ; whereas SSE emulation of 3arg prefers to have it in src1 (i.e. the mov).
899 ; So, if the op is symmetric and the wrong one is memory, swap them.
900 %macro RUN_AVX_INSTR1 8
901 %assign %%swap 0
902 %if AVX_enabled
903 %ifnid %6
904 %assign %%swap 1
905 %endif
906 %elifnidn %5, %6
907 %ifnid %7
908 %assign %%swap 1
909 %endif
910 %endif
911 %if %%swap && %3 == 0 && %8 == 1
912 RUN_AVX_INSTR %1, %2, %3, %4, %5, %7, %6
913 %else
914 RUN_AVX_INSTR %1, %2, %3, %4, %5, %6, %7
915 %endif
916 %endmacro
918 ;%1 == instruction
919 ;%2 == 1 if float, 0 if int
920 ;%3 == 1 if 4-operand (xmm, xmm, xmm, imm), 0 if 2- or 3-operand (xmm, xmm, xmm)
921 ;%4 == 1 if symmetric (i.e. doesn't matter which src arg is which), 0 if not
922 %macro AVX_INSTR 4
923 %macro %1 2-9 fnord, fnord, fnord, %1, %2, %3, %4
924 %ifidn %3, fnord
925 RUN_AVX_INSTR %6, %7, %8, 2, %1, %2
926 %elifidn %4, fnord
927 RUN_AVX_INSTR1 %6, %7, %8, 3, %1, %2, %3, %9
928 %elifidn %5, fnord
929 RUN_AVX_INSTR %6, %7, %8, 4, %1, %2, %3, %4
930 %else
931 RUN_AVX_INSTR %6, %7, %8, 5, %1, %2, %3, %4, %5
932 %endif
933 %endmacro
934 %endmacro
936 AVX_INSTR addpd, 1, 0, 1
937 AVX_INSTR addps, 1, 0, 1
938 AVX_INSTR addsd, 1, 0, 1
939 AVX_INSTR addss, 1, 0, 1
940 AVX_INSTR addsubpd, 1, 0, 0
941 AVX_INSTR addsubps, 1, 0, 0
942 AVX_INSTR andpd, 1, 0, 1
943 AVX_INSTR andps, 1, 0, 1
944 AVX_INSTR andnpd, 1, 0, 0
945 AVX_INSTR andnps, 1, 0, 0
946 AVX_INSTR blendpd, 1, 0, 0
947 AVX_INSTR blendps, 1, 0, 0
948 AVX_INSTR blendvpd, 1, 0, 0
949 AVX_INSTR blendvps, 1, 0, 0
950 AVX_INSTR cmppd, 1, 0, 0
951 AVX_INSTR cmpps, 1, 0, 0
952 AVX_INSTR cmpsd, 1, 0, 0
953 AVX_INSTR cmpss, 1, 0, 0
954 AVX_INSTR cvtdq2ps, 1, 0, 0
955 AVX_INSTR cvtps2dq, 1, 0, 0
956 AVX_INSTR divpd, 1, 0, 0
957 AVX_INSTR divps, 1, 0, 0
958 AVX_INSTR divsd, 1, 0, 0
959 AVX_INSTR divss, 1, 0, 0
960 AVX_INSTR dppd, 1, 1, 0
961 AVX_INSTR dpps, 1, 1, 0
962 AVX_INSTR haddpd, 1, 0, 0
963 AVX_INSTR haddps, 1, 0, 0
964 AVX_INSTR hsubpd, 1, 0, 0
965 AVX_INSTR hsubps, 1, 0, 0
966 AVX_INSTR maxpd, 1, 0, 1
967 AVX_INSTR maxps, 1, 0, 1
968 AVX_INSTR maxsd, 1, 0, 1
969 AVX_INSTR maxss, 1, 0, 1
970 AVX_INSTR minpd, 1, 0, 1
971 AVX_INSTR minps, 1, 0, 1
972 AVX_INSTR minsd, 1, 0, 1
973 AVX_INSTR minss, 1, 0, 1
974 AVX_INSTR movhlps, 1, 0, 0
975 AVX_INSTR movlhps, 1, 0, 0
976 AVX_INSTR movsd, 1, 0, 0
977 AVX_INSTR movss, 1, 0, 0
978 AVX_INSTR mpsadbw, 0, 1, 0
979 AVX_INSTR mulpd, 1, 0, 1
980 AVX_INSTR mulps, 1, 0, 1
981 AVX_INSTR mulsd, 1, 0, 1
982 AVX_INSTR mulss, 1, 0, 1
983 AVX_INSTR orpd, 1, 0, 1
984 AVX_INSTR orps, 1, 0, 1
985 AVX_INSTR pabsb, 0, 0, 0
986 AVX_INSTR pabsw, 0, 0, 0
987 AVX_INSTR pabsd, 0, 0, 0
988 AVX_INSTR packsswb, 0, 0, 0
989 AVX_INSTR packssdw, 0, 0, 0
990 AVX_INSTR packuswb, 0, 0, 0
991 AVX_INSTR packusdw, 0, 0, 0
992 AVX_INSTR paddb, 0, 0, 1
993 AVX_INSTR paddw, 0, 0, 1
994 AVX_INSTR paddd, 0, 0, 1
995 AVX_INSTR paddq, 0, 0, 1
996 AVX_INSTR paddsb, 0, 0, 1
997 AVX_INSTR paddsw, 0, 0, 1
998 AVX_INSTR paddusb, 0, 0, 1
999 AVX_INSTR paddusw, 0, 0, 1
1000 AVX_INSTR palignr, 0, 1, 0
1001 AVX_INSTR pand, 0, 0, 1
1002 AVX_INSTR pandn, 0, 0, 0
1003 AVX_INSTR pavgb, 0, 0, 1
1004 AVX_INSTR pavgw, 0, 0, 1
1005 AVX_INSTR pblendvb, 0, 0, 0
1006 AVX_INSTR pblendw, 0, 1, 0
1007 AVX_INSTR pcmpestri, 0, 0, 0
1008 AVX_INSTR pcmpestrm, 0, 0, 0
1009 AVX_INSTR pcmpistri, 0, 0, 0
1010 AVX_INSTR pcmpistrm, 0, 0, 0
1011 AVX_INSTR pcmpeqb, 0, 0, 1
1012 AVX_INSTR pcmpeqw, 0, 0, 1
1013 AVX_INSTR pcmpeqd, 0, 0, 1
1014 AVX_INSTR pcmpeqq, 0, 0, 1
1015 AVX_INSTR pcmpgtb, 0, 0, 0
1016 AVX_INSTR pcmpgtw, 0, 0, 0
1017 AVX_INSTR pcmpgtd, 0, 0, 0
1018 AVX_INSTR pcmpgtq, 0, 0, 0
1019 AVX_INSTR phaddw, 0, 0, 0
1020 AVX_INSTR phaddd, 0, 0, 0
1021 AVX_INSTR phaddsw, 0, 0, 0
1022 AVX_INSTR phsubw, 0, 0, 0
1023 AVX_INSTR phsubd, 0, 0, 0
1024 AVX_INSTR phsubsw, 0, 0, 0
1025 AVX_INSTR pmaddwd, 0, 0, 1
1026 AVX_INSTR pmaddubsw, 0, 0, 0
1027 AVX_INSTR pmaxsb, 0, 0, 1
1028 AVX_INSTR pmaxsw, 0, 0, 1
1029 AVX_INSTR pmaxsd, 0, 0, 1
1030 AVX_INSTR pmaxub, 0, 0, 1
1031 AVX_INSTR pmaxuw, 0, 0, 1
1032 AVX_INSTR pmaxud, 0, 0, 1
1033 AVX_INSTR pminsb, 0, 0, 1
1034 AVX_INSTR pminsw, 0, 0, 1
1035 AVX_INSTR pminsd, 0, 0, 1
1036 AVX_INSTR pminub, 0, 0, 1
1037 AVX_INSTR pminuw, 0, 0, 1
1038 AVX_INSTR pminud, 0, 0, 1
1039 AVX_INSTR pmovmskb, 0, 0, 0
1040 AVX_INSTR pmulhuw, 0, 0, 1
1041 AVX_INSTR pmulhrsw, 0, 0, 1
1042 AVX_INSTR pmulhw, 0, 0, 1
1043 AVX_INSTR pmullw, 0, 0, 1
1044 AVX_INSTR pmulld, 0, 0, 1
1045 AVX_INSTR pmuludq, 0, 0, 1
1046 AVX_INSTR pmuldq, 0, 0, 1
1047 AVX_INSTR por, 0, 0, 1
1048 AVX_INSTR psadbw, 0, 0, 1
1049 AVX_INSTR pshufb, 0, 0, 0
1050 AVX_INSTR pshufd, 0, 1, 0
1051 AVX_INSTR pshufhw, 0, 1, 0
1052 AVX_INSTR pshuflw, 0, 1, 0
1053 AVX_INSTR psignb, 0, 0, 0
1054 AVX_INSTR psignw, 0, 0, 0
1055 AVX_INSTR psignd, 0, 0, 0
1056 AVX_INSTR psllw, 0, 0, 0
1057 AVX_INSTR pslld, 0, 0, 0
1058 AVX_INSTR psllq, 0, 0, 0
1059 AVX_INSTR pslldq, 0, 0, 0
1060 AVX_INSTR psraw, 0, 0, 0
1061 AVX_INSTR psrad, 0, 0, 0
1062 AVX_INSTR psrlw, 0, 0, 0
1063 AVX_INSTR psrld, 0, 0, 0
1064 AVX_INSTR psrlq, 0, 0, 0
1065 AVX_INSTR psrldq, 0, 0, 0
1066 AVX_INSTR psubb, 0, 0, 0
1067 AVX_INSTR psubw, 0, 0, 0
1068 AVX_INSTR psubd, 0, 0, 0
1069 AVX_INSTR psubq, 0, 0, 0
1070 AVX_INSTR psubsb, 0, 0, 0
1071 AVX_INSTR psubsw, 0, 0, 0
1072 AVX_INSTR psubusb, 0, 0, 0
1073 AVX_INSTR psubusw, 0, 0, 0
1074 AVX_INSTR ptest, 0, 0, 0
1075 AVX_INSTR punpckhbw, 0, 0, 0
1076 AVX_INSTR punpckhwd, 0, 0, 0
1077 AVX_INSTR punpckhdq, 0, 0, 0
1078 AVX_INSTR punpckhqdq, 0, 0, 0
1079 AVX_INSTR punpcklbw, 0, 0, 0
1080 AVX_INSTR punpcklwd, 0, 0, 0
1081 AVX_INSTR punpckldq, 0, 0, 0
1082 AVX_INSTR punpcklqdq, 0, 0, 0
1083 AVX_INSTR pxor, 0, 0, 1
1084 AVX_INSTR shufps, 1, 1, 0
1085 AVX_INSTR subpd, 1, 0, 0
1086 AVX_INSTR subps, 1, 0, 0
1087 AVX_INSTR subsd, 1, 0, 0
1088 AVX_INSTR subss, 1, 0, 0
1089 AVX_INSTR unpckhpd, 1, 0, 0
1090 AVX_INSTR unpckhps, 1, 0, 0
1091 AVX_INSTR unpcklpd, 1, 0, 0
1092 AVX_INSTR unpcklps, 1, 0, 0
1093 AVX_INSTR xorpd, 1, 0, 1
1094 AVX_INSTR xorps, 1, 0, 1
1096 ; 3DNow instructions, for sharing code between AVX, SSE and 3DN
1097 AVX_INSTR pfadd, 1, 0, 1
1098 AVX_INSTR pfsub, 1, 0, 0
1099 AVX_INSTR pfmul, 1, 0, 1
1101 ; base-4 constants for shuffles
1102 %assign i 0
1103 %rep 256
1104 %assign j ((i>>6)&3)*1000 + ((i>>4)&3)*100 + ((i>>2)&3)*10 + (i&3)
1105 %if j < 10
1106 CAT_XDEFINE q000, j, i
1107 %elif j < 100
1108 CAT_XDEFINE q00, j, i
1109 %elif j < 1000
1110 CAT_XDEFINE q0, j, i
1111 %else
1112 CAT_XDEFINE q, j, i
1113 %endif
1114 %assign i i+1
1115 %endrep
1116 %undef i
1117 %undef j
1119 %macro FMA_INSTR 3
1120 %macro %1 4-7 %1, %2, %3
1121 %if cpuflag(xop)
1122 v%5 %1, %2, %3, %4
1123 %else
1124 %6 %1, %2, %3
1125 %7 %1, %4
1126 %endif
1127 %endmacro
1128 %endmacro
1130 FMA_INSTR pmacsdd, pmulld, paddd
1131 FMA_INSTR pmacsww, pmullw, paddw
1132 FMA_INSTR pmadcswd, pmaddwd, paddd
1134 ; tzcnt is equivalent to "rep bsf" and is backwards-compatible with bsf.
1135 ; This lets us use tzcnt without bumping the yasm version requirement yet.
1136 %define tzcnt rep bsf
