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base/asm-common.h: Use `_' consistently for ignored macro arguments.
[catacomb] / base / asm-common.h
CommitLineData
1a0c09c4
MW		 1/// -*- mode: asm; asm-comment-char: ?/ -*-
2///
3/// Fancy SIMD implementation of Salsa20
4///
5/// (c) 2015 Straylight/Edgeware
6///
7
8///----- Licensing notice ---------------------------------------------------
9///
10/// This file is part of Catacomb.
11///
12/// Catacomb is free software; you can redistribute it and/or modify
13/// it under the terms of the GNU Library General Public License as
14/// published by the Free Software Foundation; either version 2 of the
15/// License, or (at your option) any later version.
16///
17/// Catacomb is distributed in the hope that it will be useful,
18/// but WITHOUT ANY WARRANTY; without even the implied warranty of
19/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20/// GNU Library General Public License for more details.
21///
22/// You should have received a copy of the GNU Library General Public
23/// License along with Catacomb; if not, write to the Free
24/// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
25/// MA 02111-1307, USA.
26
27///--------------------------------------------------------------------------
28/// General definitions.
29
898f32b3
MW		 30// Preprocessor hacks.
31#define STRINGY(x) _STRINGY(x, y)
32#define _STRINGY(x) #x
33#define GLUE(x, y) _GLUE(x, y)
34#define _GLUE(x, y) x##y
35#define _EMPTY
36
f8e509a9
MW		 37// Some useful variables.
38 .L$_subsec = 0
39
40// Literal pools done the hard way.
41#define _LIT .text .L$_subsec + 1
42#define _ENDLIT .text .L$_subsec
6c54cbd3 43#define _LTORG .L$_subsec = .L$_subsec + 2; .text .L$_subsec
f8e509a9 44
645fcce0
MW		 45// ELF section types.
46#if __ELF__
47# if CPUFAM_ARMEL
48# define _SECTTY(ty) %ty
49# else
50# define _SECTTY(ty) @ty
51# endif
52#endif
53
54// Section selection.
55#define TEXT .text .L$_subsec
56#if ABI_WIN
57# define RODATA .section .rdata, "dr"
58#elif __ELF__
59# define RODATA .section .rodata, "a", _SECTTY(progbits)
60#else
61# define RODATA TEXT
62#endif
63#define DATA .data
64
1a0c09c4
MW		 65// Announcing an external function.
66#define FUNC(name) \
67 .globl F(name); \
68 TYPE_FUNC(name); \
8a1aa284 69 .macro ENDFUNC; _ENDFUNC(name); .endm; \
1a0c09c4
MW		 70 FUNC_PREHOOK(name); \
71F(name): \
72 FUNC_POSTHOOK(name)
73
74// Marking the end of a function.
75#define _ENDFUNC(name) \
76 .purgem ENDFUNC; \
77 SIZE_OBJ(name); \
f8e509a9 78 ENDFUNC_HOOK(name); \
6c54cbd3 79 _LTORG
1a0c09c4 80
8ae4c946
MW		 81// Make a helper function, if necessary.
82#define AUXFN(name) \
83 .ifndef .L$_auxfn_def.name; \
84 .text 7128; \
85 .macro _ENDAUXFN; _ENDAUXFN_TAIL(name); .endm; \
86 FUNC_PREHOOK(name); \
87name:
88#define _ENDAUXFN_TAIL(name) \
89 .purgem _ENDAUXFN; \
90 .text .L$_subsec; \
91 .L$_auxfn_def.name = 1
92#define ENDAUXFN _ENDAUXFN; .endif
93
1a0c09c4
MW		 94///--------------------------------------------------------------------------
95/// ELF-specific hacking.
96
97#if __ELF__
98
99#if __PIC__ || __PIE__
100# define WANT_PIC 1
101#endif
102
103#define TYPE_FUNC(name) .type name, STT_FUNC
104
105#define SIZE_OBJ(name) .size name, . - name
106
107#endif
108
109///--------------------------------------------------------------------------
0f23f75f
MW		 110/// Windows-specific hacking.
111
112#if ABI_WIN
1a0c09c4
MW		 113
114#if CPUFAM_X86
0f23f75f
MW		 115# define F(name) _##name
116#endif
117
118#endif
119
120///--------------------------------------------------------------------------
121/// x86- and amd64-specific hacking.
122///
123/// It's (slightly) easier to deal with both of these in one go.
124
125#if CPUFAM_X86 || CPUFAM_AMD64
1a0c09c4
MW		 126
127// Set the function hooks.
128#define FUNC_PREHOOK(_) .balign 16
129
f71dd54d
MW		 130// On Windows, arrange to install stack-unwinding data.
131#if CPUFAM_AMD64 && ABI_WIN
132# define FUNC_POSTHOOK(name) .seh_proc name
133# define ENDFUNC_HOOK(_) .seh_endproc
134// Procedures are expected to invoke `.seh_setframe' if necessary, and
135// `.seh_pushreg' and friends, and `.seh_endprologue'.
136#endif
137
1a0c09c4
MW		 138// Don't use the wretched AT&T syntax. It's festooned with pointless
139// punctuation, and all of the data movement is backwards. Ugh!
140 .intel_syntax noprefix
141
142// Call external subroutine at ADDR, possibly via PLT.
8a1aa284 143.macro callext addr
1a0c09c4
MW		 144#if WANT_PIC
145 call \addr@PLT
146#else
147 call \addr
148#endif
8a1aa284 149.endm
1a0c09c4
MW		 150
151// Do I need to arrange a spare GOT register?
152#if WANT_PIC && CPUFAM_X86
153# define NEED_GOT 1
154#endif
155#define GOTREG ebx // Not needed in AMD64 so don't care.
156
157// Maybe load GOT address into GOT.
8a1aa284 158.macro ldgot got=GOTREG
0f23f75f 159#if WANT_PIC && CPUFAM_X86
8ae4c946 160 AUXFN(_ldgot.\got)
1a0c09c4
MW		 161 mov \got, [esp]
162 ret
8ae4c946
MW		 163 ENDAUXFN
164 call _ldgot.\got
165 add \got, offset _GLOBAL_OFFSET_TABLE_
1a0c09c4 166#endif
8a1aa284 167.endm
1a0c09c4
MW		 168
169// Load address of external symbol ADDR into REG, maybe using GOT.
8a1aa284 170.macro leaext reg, addr, got=GOTREG
1a0c09c4 171#if WANT_PIC
0f23f75f 172# if CPUFAM_X86
1a0c09c4 173 mov \reg, [\got + \addr@GOT]
0f23f75f
MW		 174# endif
175# if CPUFAM_AMD64
176 mov \reg, \addr@GOTPCREL[rip]
177# endif
1a0c09c4 178#else
0f23f75f 179# if CPUFAM_X86
1a0c09c4 180 mov \reg, offset \addr
0f23f75f
MW		 181# endif
182# if CPUFAM_AMD64
183 lea \reg, \addr[rip]
184# endif
1a0c09c4 185#endif
8a1aa284 186.endm
1a0c09c4
MW		 187
188// Address expression (possibly using a base register, and a displacement)
189// referring to ADDR, which is within our module, maybe using GOT.
190#define INTADDR(...) INTADDR__0(__VA_ARGS__, GOTREG, dummy)
191#define INTADDR__0(addr, got, ...) INTADDR__1(addr, got)
0f23f75f
MW		 192#if CPUFAM_AMD64
193# define INTADDR__1(addr, got) addr + rip
194#elif WANT_PIC
1a0c09c4
MW		 195# define INTADDR__1(addr, got) got + addr@GOTOFF
196#else
197# define INTADDR__1(addr, got) addr
198#endif
199
a13b5730
MW		 200// Permutations for SIMD instructions. SHUF(D, C, B, A) is an immediate,
201// suitable for use in `pshufd' or `shufpd', which copies element D
202// (0 <= D < 4) of the source to element 3 of the destination, element C to
203// element 2, element B to element 1, and element A to element 0.
204#define SHUF(d, c, b, a) (64*(d) + 16*(c) + 4*(b) + (a))
205
43ea7558
MW		 206// Map register names to their individual pieces.
207
208// Apply decoration decor to (internal) register name reg of type ty.
209//
210// See `R_...' for internal register names. Decorations are as follows.
211//
212// b low byte (e.g., `al', `r8b')
213// h high byte (e.g., `ah')
214// w word (e.g., `ax', `r8w')
215// d doubleword (e.g., `eax', `r8d')
216// q quadword (e.g., `rax', `r8')
217// r whole register (doubleword on x86, quadword on amd64)
218//
219// And types are as follows.
220//
221// abcd the four traditional registers `a', `b', `c', `d'
222// xp the four pointer registers `si', `di', `bp', `sp'
223// ip the instruction pointer `ip'
224// rn the AMD64 numbered registers `r8'--`r15'
225#define _DECOR(ty, decor, reg) _DECOR_##ty##_##decor(reg)
226
227// Internal macros: _DECOR_ty_decor(reg) applies decoration decor to
228// (internal) register name reg of type ty.
229
230#define _DECOR_abcd_b(reg) reg##l
231#define _DECOR_abcd_h(reg) reg##h
232#define _DECOR_abcd_w(reg) reg##x
233#define _DECOR_abcd_d(reg) e##reg##x
234#if CPUFAM_AMD64
235# define _DECOR_abcd_q(reg) r##reg##x
236#endif
237
238#define _DECOR_xp_b(reg) reg##l
239#define _DECOR_xp_w(reg) reg
240#define _DECOR_xp_d(reg) e##reg
241#if CPUFAM_AMD64
242# define _DECOR_xp_q(reg) r##reg
243#endif
244
245#define _DECOR_ip_w(reg) reg
246#define _DECOR_ip_d(reg) e##reg
247#if CPUFAM_AMD64
248# define _DECOR_ip_q(reg) r##reg
249#endif
250
251#if CPUFAM_AMD64
252# define _DECOR_rn_b(reg) reg##b
253# define _DECOR_rn_w(reg) reg##w
254# define _DECOR_rn_d(reg) reg##d
255# define _DECOR_rn_q(reg) reg
256# define _DECOR_rn_r(reg) reg
257#endif
258
259#if CPUFAM_X86
260# define _DECOR_abcd_r(reg) e##reg##x
261# define _DECOR_xp_r(reg) e##reg
262# define _DECOR_ip_r(reg) e##reg
263#endif
264#if CPUFAM_AMD64
265# define _DECOR_abcd_r(reg) r##reg##x
266# define _DECOR_xp_r(reg) r##reg
267# define _DECOR_ip_r(reg) r##reg
268#endif
269
270#define _DECOR_mem_b(addr) byte ptr addr
271#define _DECOR_mem_w(addr) word ptr addr
272#define _DECOR_mem_d(addr) dword ptr addr
273#if CPUFAM_AMD64
274# define _DECOR_mem_q(addr) qword ptr addr
275#endif
276
277// R_r(decor) applies decoration decor to register r, which is an internal
278// register name. The internal register names are: `ip', `a', `b', `c', `d',
279// `si', `di', `bp', `sp', `r8'--`r15'.
280#define R_ip(decor) _DECOR(ip, decor, ip)
281#define R_a(decor) _DECOR(abcd, decor, a)
282#define R_b(decor) _DECOR(abcd, decor, b)
283#define R_c(decor) _DECOR(abcd, decor, c)
284#define R_d(decor) _DECOR(abcd, decor, d)
285#define R_si(decor) _DECOR(xp, decor, si)
286#define R_di(decor) _DECOR(xp, decor, di)
287#define R_bp(decor) _DECOR(xp, decor, bp)
288#define R_sp(decor) _DECOR(xp, decor, sp)
289#if CPUFAM_AMD64
290# define R_r8(decor) _DECOR(rn, decor, r8)
291# define R_r9(decor) _DECOR(rn, decor, r9)
292# define R_r10(decor) _DECOR(rn, decor, r10)
293# define R_r11(decor) _DECOR(rn, decor, r11)
294# define R_r12(decor) _DECOR(rn, decor, r12)
295# define R_r13(decor) _DECOR(rn, decor, r13)
296# define R_r14(decor) _DECOR(rn, decor, r14)
297# define R_r15(decor) _DECOR(rn, decor, r15)
298#endif
299
300// Refer to an in-memory datum of the type implied by decor residing at
301// address addr (which should supply its own square-brackets).
302#define MEM(decor, addr) _DECOR(mem, decor, addr)
303
304// Applies decoration decor to assembler-level register name reg.
305#define _REGFORM(reg, decor) _GLUE(_REGFORM_, reg)(decor)
306
307// Internal macros: _REGFORM_r(decor) applies decoration decor to an
308// assembler-level register name, in place of any decoration that register
309// name has already.
310
311#define _REGFORM_ip(decor) R_ip(decor)
312#define _REGFORM_eip(decor) R_ip(decor)
313
314#define _REGFORM_a(decor) R_a(decor)
315#define _REGFORM_al(decor) R_a(decor)
316#define _REGFORM_ah(decor) R_a(decor)
317#define _REGFORM_ax(decor) R_a(decor)
318#define _REGFORM_eax(decor) R_a(decor)
319
320#define _REGFORM_b(decor) R_b(decor)
321#define _REGFORM_bl(decor) R_b(decor)
322#define _REGFORM_bh(decor) R_b(decor)
323#define _REGFORM_bx(decor) R_b(decor)
324#define _REGFORM_ebx(decor) R_b(decor)
325
326#define _REGFORM_c(decor) R_c(decor)
327#define _REGFORM_cl(decor) R_c(decor)
328#define _REGFORM_ch(decor) R_c(decor)
329#define _REGFORM_cx(decor) R_c(decor)
330#define _REGFORM_ecx(decor) R_c(decor)
331
332#define _REGFORM_d(decor) R_d(decor)
333#define _REGFORM_dl(decor) R_d(decor)
334#define _REGFORM_dh(decor) R_d(decor)
335#define _REGFORM_dx(decor) R_d(decor)
336#define _REGFORM_edx(decor) R_d(decor)
337
338#define _REGFORM_si(decor) R_si(decor)
339#define _REGFORM_sil(decor) R_si(decor)
340#define _REGFORM_esi(decor) R_si(decor)
341
342#define _REGFORM_di(decor) R_di(decor)
343#define _REGFORM_dil(decor) R_di(decor)
344#define _REGFORM_edi(decor) R_di(decor)
345
346#define _REGFORM_bp(decor) R_bp(decor)
347#define _REGFORM_bpl(decor) R_bp(decor)
348#define _REGFORM_ebp(decor) R_bp(decor)
349
350#define _REGFORM_sp(decor) R_sp(decor)
351#define _REGFORM_spl(decor) R_sp(decor)
352#define _REGFORM_esp(decor) R_sp(decor)
353
354#if CPUFAM_AMD64
355
356# define _REGFORM_rip(decor) R_ip(decor)
357# define _REGFORM_rsp(decor) R_sp(decor)
358# define _REGFORM_rbp(decor) R_bp(decor)
359# define _REGFORM_rdi(decor) R_di(decor)
360# define _REGFORM_rsi(decor) R_si(decor)
361# define _REGFORM_rdx(decor) R_d(decor)
362# define _REGFORM_rcx(decor) R_c(decor)
363# define _REGFORM_rbx(decor) R_b(decor)
364# define _REGFORM_rax(decor) R_a(decor)
365
366# define _REGFORM_r8(decor) R_r8(decor)
367# define _REGFORM_r8b(decor) R_r8(decor)
368# define _REGFORM_r8w(decor) R_r8(decor)
369# define _REGFORM_r8d(decor) R_r8(decor)
370
371# define _REGFORM_r9(decor) R_r9(decor)
372# define _REGFORM_r9b(decor) R_r9(decor)
373# define _REGFORM_r9w(decor) R_r9(decor)
374# define _REGFORM_r9d(decor) R_r9(decor)
375
376# define _REGFORM_r10(decor) R_r10(decor)
377# define _REGFORM_r10b(decor) R_r10(decor)
378# define _REGFORM_r10w(decor) R_r10(decor)
379# define _REGFORM_r10d(decor) R_r10(decor)
380
381# define _REGFORM_r11(decor) R_r11(decor)
382# define _REGFORM_r11b(decor) R_r11(decor)
383# define _REGFORM_r11w(decor) R_r11(decor)
384# define _REGFORM_r11d(decor) R_r11(decor)
385
386# define _REGFORM_r12(decor) R_r12(decor)
387# define _REGFORM_r12b(decor) R_r12(decor)
388# define _REGFORM_r12w(decor) R_r12(decor)
389# define _REGFORM_r12d(decor) R_r12(decor)
390
391# define _REGFORM_r13(decor) R_r13(decor)
392# define _REGFORM_r13b(decor) R_r13(decor)
393# define _REGFORM_r13w(decor) R_r13(decor)
394# define _REGFORM_r13d(decor) R_r13(decor)
395
396# define _REGFORM_r14(decor) R_r14(decor)
397# define _REGFORM_r14b(decor) R_r14(decor)
398# define _REGFORM_r14w(decor) R_r14(decor)
399# define _REGFORM_r14d(decor) R_r14(decor)
400
401# define _REGFORM_r15(decor) R_r15(decor)
402# define _REGFORM_r15b(decor) R_r15(decor)
403# define _REGFORM_r15w(decor) R_r15(decor)
404# define _REGFORM_r15d(decor) R_r15(decor)
405
406#endif
407
408// Macros for converting register names.
409#define BYTE(reg) _REGFORM(reg, b)
410#define HIBYTE(reg) _REGFORM(reg, h)
411#define WORD(reg) _REGFORM(reg, w)
412#define DWORD(reg) _REGFORM(reg, d)
413#if CPUFAM_AMD64
414# define QWORD(reg) _REGFORM(reg, q)
415#endif
416#define WHOLE(reg) _REGFORM(reg, r)
417
1a0c09c4
MW		 418#endif
419
17de5b2e
MW		 420#if CPUFAM_X86
421
422.macro _reg.0
423 // Stash GP registers and establish temporary stack frame.
424 pushfd
425 push eax
426 push ecx
427 push edx
428 push ebp
429 mov ebp, esp
430 and esp, ~15
431 sub esp, 512
432 fxsave [esp]
433.endm
434
435.macro _reg.1
436.endm
437
438.macro _reg.2
439.endm
440
441.macro _reg.3 fmt
442 // Print FMT and the other established arguments.
443 lea eax, .L$_reg$msg.\@
444 push eax
445 call printf
446 jmp .L$_reg$cont.\@
447.L$_reg$msg.\@:
448 .ascii ";; \fmt\n\0"
449.L$_reg$cont.\@:
450 mov eax, ebp
451 and eax, ~15
452 sub eax, 512
453 fxrstor [eax]
454 mov esp, ebp
455 pop ebp
456 pop edx
457 pop ecx
458 pop eax
459 popfd
460.endm
461
462.macro msg msg
463 _reg.0
464 _reg.1
465 _reg.2
466 _reg.3 "\msg"
467.endm
468
469.macro reg r, msg
470 _reg.0
471 .ifeqs "\r", "esp"
472 lea eax, [ebp + 20]
473 push eax
474 .else
475 .ifeqs "\r", "ebp"
476 push [ebp]
477 .else
478 push \r
479 .endif
480 .endif
481 _reg.1
482 _reg.2
483 _reg.3 "\msg: \r = %08x"
484.endm
485
486.macro xmmreg r, msg
487 _reg.0
488 _reg.1
489 _reg.2
490 movdqu xmm0, \r
491 pshufd xmm0, xmm0, 0x1b
492 sub esp, 16
493 movdqa [esp], xmm0
494 _reg.3 "\msg: \r = %08x %08x %08x %08x"
495.endm
496
497.macro mmreg r, msg
498 _reg.0
499 _reg.1
500 _reg.2
501 pshufw \r, \r, 0x4e
502 sub esp, 8
503 movq [esp], \r
504 _reg.3 "\msg: \r = %08x %08x"
505.endm
506
507.macro freg i, msg
508 _reg.0
509 _reg.1
510 _reg.2
511 finit
512 fldt [esp + 32 + 16*\i]
513 sub esp, 12
514 fstpt [esp]
515 _reg.3 "\msg: st(\i) = %.20Lg"
516.endm
517
518.macro fxreg i, msg
519 _reg.0
520 _reg.1
521 _reg.2
522 finit
523 fldt [esp + 32 + 16*\i]
524 sub esp, 12
525 fstpt [esp]
526 _reg.3 "\msg: st(\i) = %La"
527.endm
528
529#endif
530
1a0c09c4 531///--------------------------------------------------------------------------
61bd904b
MW		 532/// ARM-specific hacking.
533
59d86860 534#if CPUFAM_ARMEL
61bd904b 535
9f6eb05d
MW		 536// ARM/Thumb mode things. Use ARM by default.
537#define ARM .arm; .L$_pcoff = 8
538#define THUMB .thumb; .L$_pcoff = 4
539 ARM
540
61bd904b
MW		 541// Set the function hooks.
542#define FUNC_PREHOOK(_) .balign 4
543#define ENDFUNC_HOOK(name) .ltorg
544
545// Call external subroutine at ADDR, possibly via PLT.
8a1aa284 546.macro callext addr, cond=
61bd904b
MW		 547#if WANT_PIC
548 bl\cond \addr(PLT)
549#else
550 bl\cond \addr
551#endif
8a1aa284 552.endm
61bd904b
MW		 553
554// Do I need to arrange a spare GOT register?
555#if WANT_PIC
556# define NEED_GOT 1
557#endif
558#define GOTREG r9
559
560// Maybe load GOT address into GOT.
8a1aa284 561.macro ldgot cond=, got=GOTREG
61bd904b 562#if WANT_PIC
adca2a18
MW		 563 ldr\cond \got, .L$_ldgot$\@
564.L$_ldgot_pc$\@:
2d03a881 565 add\cond \got, pc, \got
8a1aa284 566 _LIT
adca2a18
MW		 567 .balign 4
568.L$_ldgot$\@:
9f6eb05d 569 .word _GLOBAL_OFFSET_TABLE_ - .L$_ldgot_pc$\@ - .L$_pcoff
8a1aa284 570 _ENDLIT
61bd904b 571#endif
8a1aa284 572.endm
61bd904b
MW		 573
574// Load address of external symbol ADDR into REG, maybe using GOT.
8a1aa284 575.macro leaext reg, addr, cond=, got=GOTREG
61bd904b 576#if WANT_PIC
adca2a18 577 ldr\cond \reg, .L$_leaext$\@
2d03a881 578 ldr\cond \reg, [\got, \reg]
8a1aa284 579 _LIT
adca2a18
MW		 580 .balign 4
581.L$_leaext$\@:
582 .word \addr(GOT)
8a1aa284 583 _ENDLIT
61bd904b 584#else
2d03a881 585 ldr\cond \reg, =\addr
61bd904b 586#endif
8a1aa284 587.endm
61bd904b 588
0c53ac58 589// Load address of external symbol ADDR into REG directly.
8a1aa284 590.macro leaextq reg, addr, cond=
0c53ac58
MW		 591#if WANT_PIC
592 ldr\cond \reg, .L$_leaextq$\@
593.L$_leaextq_pc$\@:
9f6eb05d 594 .if .L$_pcoff == 8
0c53ac58 595 ldr\cond \reg, [pc, \reg]
9f6eb05d
MW		 596 .else
597 add\cond \reg, pc
598 ldr\cond \reg, [\reg]
599 .endif
8a1aa284 600 _LIT
0c53ac58
MW		 601 .balign 4
602.L$_leaextq$\@:
9f6eb05d 603 .word \addr(GOT_PREL) + (. - .L$_leaextq_pc$\@ - .L$_pcoff)
8a1aa284 604 _ENDLIT
0c53ac58
MW		 605#else
606 ldr\cond \reg, =\addr
607#endif
8a1aa284 608.endm
0c53ac58 609
43ea7558
MW		 610// Apply decoration decor to register name reg.
611#define _REGFORM(reg, decor) _GLUE(_REGFORM_, reg)(decor)
612
613// Internal macros: `_REGFORM_r(decor)' applies decoration decor to register
614// name r.
615
616#define _REGFORM_s0(decor) _DECOR(s, decor, 0)
617#define _REGFORM_s1(decor) _DECOR(s, decor, 1)
618#define _REGFORM_s2(decor) _DECOR(s, decor, 2)
619#define _REGFORM_s3(decor) _DECOR(s, decor, 3)
620#define _REGFORM_s4(decor) _DECOR(s, decor, 4)
621#define _REGFORM_s5(decor) _DECOR(s, decor, 5)
622#define _REGFORM_s6(decor) _DECOR(s, decor, 6)
623#define _REGFORM_s7(decor) _DECOR(s, decor, 7)
624#define _REGFORM_s8(decor) _DECOR(s, decor, 8)
625#define _REGFORM_s9(decor) _DECOR(s, decor, 9)
626#define _REGFORM_s10(decor) _DECOR(s, decor, 10)
627#define _REGFORM_s11(decor) _DECOR(s, decor, 11)
628#define _REGFORM_s12(decor) _DECOR(s, decor, 12)
629#define _REGFORM_s13(decor) _DECOR(s, decor, 13)
630#define _REGFORM_s14(decor) _DECOR(s, decor, 14)
631#define _REGFORM_s15(decor) _DECOR(s, decor, 15)
632#define _REGFORM_s16(decor) _DECOR(s, decor, 16)
633#define _REGFORM_s17(decor) _DECOR(s, decor, 17)
634#define _REGFORM_s18(decor) _DECOR(s, decor, 18)
635#define _REGFORM_s19(decor) _DECOR(s, decor, 19)
636#define _REGFORM_s20(decor) _DECOR(s, decor, 20)
637#define _REGFORM_s21(decor) _DECOR(s, decor, 21)
638#define _REGFORM_s22(decor) _DECOR(s, decor, 22)
639#define _REGFORM_s23(decor) _DECOR(s, decor, 23)
640#define _REGFORM_s24(decor) _DECOR(s, decor, 24)
641#define _REGFORM_s25(decor) _DECOR(s, decor, 25)
642#define _REGFORM_s26(decor) _DECOR(s, decor, 26)
643#define _REGFORM_s27(decor) _DECOR(s, decor, 27)
644#define _REGFORM_s28(decor) _DECOR(s, decor, 28)
645#define _REGFORM_s29(decor) _DECOR(s, decor, 29)
646#define _REGFORM_s30(decor) _DECOR(s, decor, 30)
647#define _REGFORM_s31(decor) _DECOR(s, decor, 31)
648
649#define _REGFORM_d0(decor) _DECOR(d, decor, 0)
650#define _REGFORM_d1(decor) _DECOR(d, decor, 1)
651#define _REGFORM_d2(decor) _DECOR(d, decor, 2)
652#define _REGFORM_d3(decor) _DECOR(d, decor, 3)
653#define _REGFORM_d4(decor) _DECOR(d, decor, 4)
654#define _REGFORM_d5(decor) _DECOR(d, decor, 5)
655#define _REGFORM_d6(decor) _DECOR(d, decor, 6)
656#define _REGFORM_d7(decor) _DECOR(d, decor, 7)
657#define _REGFORM_d8(decor) _DECOR(d, decor, 8)
658#define _REGFORM_d9(decor) _DECOR(d, decor, 9)
659#define _REGFORM_d10(decor) _DECOR(d, decor, 10)
660#define _REGFORM_d11(decor) _DECOR(d, decor, 11)
661#define _REGFORM_d12(decor) _DECOR(d, decor, 12)
662#define _REGFORM_d13(decor) _DECOR(d, decor, 13)
663#define _REGFORM_d14(decor) _DECOR(d, decor, 14)
664#define _REGFORM_d15(decor) _DECOR(d, decor, 15)
665#define _REGFORM_d16(decor) _DECOR(d, decor, 16)
666#define _REGFORM_d17(decor) _DECOR(d, decor, 17)
667#define _REGFORM_d18(decor) _DECOR(d, decor, 18)
668#define _REGFORM_d19(decor) _DECOR(d, decor, 19)
669#define _REGFORM_d20(decor) _DECOR(d, decor, 20)
670#define _REGFORM_d21(decor) _DECOR(d, decor, 21)
671#define _REGFORM_d22(decor) _DECOR(d, decor, 22)
672#define _REGFORM_d23(decor) _DECOR(d, decor, 23)
673#define _REGFORM_d24(decor) _DECOR(d, decor, 24)
674#define _REGFORM_d25(decor) _DECOR(d, decor, 25)
675#define _REGFORM_d26(decor) _DECOR(d, decor, 26)
676#define _REGFORM_d27(decor) _DECOR(d, decor, 27)
677#define _REGFORM_d28(decor) _DECOR(d, decor, 28)
678#define _REGFORM_d29(decor) _DECOR(d, decor, 29)
679#define _REGFORM_d30(decor) _DECOR(d, decor, 30)
680#define _REGFORM_d31(decor) _DECOR(d, decor, 31)
681
682#define _REGFORM_q0(decor) _DECOR(q, decor, 0)
683#define _REGFORM_q1(decor) _DECOR(q, decor, 1)
684#define _REGFORM_q2(decor) _DECOR(q, decor, 2)
685#define _REGFORM_q3(decor) _DECOR(q, decor, 3)
686#define _REGFORM_q4(decor) _DECOR(q, decor, 4)
687#define _REGFORM_q5(decor) _DECOR(q, decor, 5)
688#define _REGFORM_q6(decor) _DECOR(q, decor, 6)
689#define _REGFORM_q7(decor) _DECOR(q, decor, 7)
690#define _REGFORM_q8(decor) _DECOR(q, decor, 8)
691#define _REGFORM_q9(decor) _DECOR(q, decor, 9)
692#define _REGFORM_q10(decor) _DECOR(q, decor, 10)
693#define _REGFORM_q11(decor) _DECOR(q, decor, 11)
694#define _REGFORM_q12(decor) _DECOR(q, decor, 12)
695#define _REGFORM_q13(decor) _DECOR(q, decor, 13)
696#define _REGFORM_q14(decor) _DECOR(q, decor, 14)
697#define _REGFORM_q15(decor) _DECOR(q, decor, 15)
698
699// `_LOPART(n)' and `_HIPART(n)' return the numbers of the register halves of
700// register n, i.e., 2*n and 2*n + 1 respectively.
701#define _LOPART(n) _GLUE(_LOPART_, n)
702#define _HIPART(n) _GLUE(_HIPART_, n)
703
704// Internal macros: `_LOPART_n' and `_HIPART_n' return the numbers of the
705// register halves of register n, i.e., 2*n and 2*n + 1 respectively.
706
707#define _LOPART_0 0
708#define _HIPART_0 1
709#define _LOPART_1 2
710#define _HIPART_1 3
711#define _LOPART_2 4
712#define _HIPART_2 5
713#define _LOPART_3 6
714#define _HIPART_3 7
715#define _LOPART_4 8
716#define _HIPART_4 9
717#define _LOPART_5 10
718#define _HIPART_5 11
719#define _LOPART_6 12
720#define _HIPART_6 13
721#define _LOPART_7 14
722#define _HIPART_7 15
723#define _LOPART_8 16
724#define _HIPART_8 17
725#define _LOPART_9 18
726#define _HIPART_9 19
727#define _LOPART_10 20
728#define _HIPART_10 21
729#define _LOPART_11 22
730#define _HIPART_11 23
731#define _LOPART_12 24
732#define _HIPART_12 25
733#define _LOPART_13 26
734#define _HIPART_13 27
735#define _LOPART_14 28
736#define _HIPART_14 29
737#define _LOPART_15 30
738#define _HIPART_15 31
739
740// Return the register number of the pair containing register n, i.e.,
741// floor(n/2).
742#define _PAIR(n) _GLUE(_PAIR_, n)
743
744// Internal macros: `_PAIR_n' returns the register number of the pair
745// containing register n, i.e., floor(n/2).
746#define _PAIR_0 0
747#define _PAIR_1 0
748#define _PAIR_2 1
749#define _PAIR_3 1
750#define _PAIR_4 2
751#define _PAIR_5 2
752#define _PAIR_6 3
753#define _PAIR_7 3
754#define _PAIR_8 4
755#define _PAIR_9 4
756#define _PAIR_10 5
757#define _PAIR_11 5
758#define _PAIR_12 6
759#define _PAIR_13 6
760#define _PAIR_14 7
761#define _PAIR_15 7
762#define _PAIR_16 8
763#define _PAIR_17 8
764#define _PAIR_18 9
765#define _PAIR_19 9
766#define _PAIR_20 10
767#define _PAIR_21 10
768#define _PAIR_22 11
769#define _PAIR_23 11
770#define _PAIR_24 12
771#define _PAIR_25 12
772#define _PAIR_26 13
773#define _PAIR_27 13
774#define _PAIR_28 14
775#define _PAIR_29 14
776#define _PAIR_30 15
777#define _PAIR_31 15
778
779// Apply decoration decor to register number n of type ty. Decorations are
780// as follows.
781//
782// decor types meaning
783// Q s, d the NEON qN register containing this one
784// D s the NEON dN register containing this one
785// D0 q the low 64-bit half of this one
786// D1 q the high 64-bit half of this one
787// S0 d, q the first 32-bit piece of this one
788// S1 d, q the second 32-bit piece of this one
789// S2 q the third 32-bit piece of this one
790// S3 q the fourth 32-bit piece of this one
791// Bn q the nth byte of this register, as a scalar
792// Hn q the nth halfword of this register, as a scalar
793// Wn q the nth word of this register, as a scalar
794#define _DECOR(ty, decor, n) _DECOR_##ty##_##decor(n)
795
796// Internal macros: `_DECOR_ty_decor(n)' applies decoration decor to register
797// number n of type ty.
798
799#define _DECOR_s_Q(n) GLUE(q, _PAIR(_PAIR(n)))
800#define _DECOR_s_D(n) GLUE(d, _PAIR(n))
801
802#define _DECOR_d_Q(n) GLUE(q, _PAIR(n))
803#define _DECOR_d_S0(n) GLUE(s, _LOPART(n))
804#define _DECOR_d_S1(n) GLUE(s, _LOPART(n))
805
806#define _DECOR_q_D0(n) GLUE(d, _LOPART(n))
807#define _DECOR_q_D1(n) GLUE(d, _HIPART(n))
808#define _DECOR_q_S0(n) GLUE(s, _LOPART(_LOPART(n)))
809#define _DECOR_q_S1(n) GLUE(s, _HIPART(_LOPART(n)))
810#define _DECOR_q_S2(n) GLUE(s, _LOPART(_HIPART(n)))
811#define _DECOR_q_S3(n) GLUE(s, _HIPART(_HIPART(n)))
812#define _DECOR_q_W0(n) GLUE(d, _LOPART(n))[0]
813#define _DECOR_q_W1(n) GLUE(d, _LOPART(n))[1]
814#define _DECOR_q_W2(n) GLUE(d, _HIPART(n))[0]
815#define _DECOR_q_W3(n) GLUE(d, _HIPART(n))[1]
816#define _DECOR_q_H0(n) GLUE(d, _LOPART(n))[0]
817#define _DECOR_q_H1(n) GLUE(d, _LOPART(n))[1]
818#define _DECOR_q_H2(n) GLUE(d, _LOPART(n))[2]
819#define _DECOR_q_H3(n) GLUE(d, _LOPART(n))[3]
820#define _DECOR_q_H4(n) GLUE(d, _HIPART(n))[0]
821#define _DECOR_q_H5(n) GLUE(d, _HIPART(n))[1]
822#define _DECOR_q_H6(n) GLUE(d, _HIPART(n))[2]
823#define _DECOR_q_H7(n) GLUE(d, _HIPART(n))[3]
824#define _DECOR_q_B0(n) GLUE(d, _LOPART(n))[0]
825#define _DECOR_q_B1(n) GLUE(d, _LOPART(n))[1]
826#define _DECOR_q_B2(n) GLUE(d, _LOPART(n))[2]
827#define _DECOR_q_B3(n) GLUE(d, _LOPART(n))[3]
828#define _DECOR_q_B4(n) GLUE(d, _LOPART(n))[4]
829#define _DECOR_q_B5(n) GLUE(d, _LOPART(n))[5]
830#define _DECOR_q_B6(n) GLUE(d, _LOPART(n))[6]
831#define _DECOR_q_B7(n) GLUE(d, _LOPART(n))[7]
832#define _DECOR_q_B8(n) GLUE(d, _HIPART(n))[0]
833#define _DECOR_q_B9(n) GLUE(d, _HIPART(n))[1]
834#define _DECOR_q_B10(n) GLUE(d, _HIPART(n))[2]
835#define _DECOR_q_B11(n) GLUE(d, _HIPART(n))[3]
836#define _DECOR_q_B12(n) GLUE(d, _HIPART(n))[4]
837#define _DECOR_q_B13(n) GLUE(d, _HIPART(n))[5]
838#define _DECOR_q_B14(n) GLUE(d, _HIPART(n))[6]
839#define _DECOR_q_B15(n) GLUE(d, _HIPART(n))[7]
840
841// Macros for navigating the NEON register hierarchy.
842#define S0(reg) _REGFORM(reg, S0)
843#define S1(reg) _REGFORM(reg, S1)
844#define S2(reg) _REGFORM(reg, S2)
845#define S3(reg) _REGFORM(reg, S3)
846#define D(reg) _REGFORM(reg, D)
847#define D0(reg) _REGFORM(reg, D0)
848#define D1(reg) _REGFORM(reg, D1)
849#define Q(reg) _REGFORM(reg, Q)
850
851// Macros for indexing quadword registers.
852#define QB(reg, i) _REGFORM(reg, B##i)
853#define QH(reg, i) _REGFORM(reg, H##i)
854#define QW(reg, i) _REGFORM(reg, W##i)
855
856// Macros for converting vldm/vstm ranges.
857#define QQ(qlo, qhi) D0(qlo)-D1(qhi)
858
61bd904b
MW		 859#endif
860
861///--------------------------------------------------------------------------
1a0c09c4
MW		 862/// Final stuff.
863
864// Default values for the various hooks.
865#ifndef FUNC_PREHOOK
1e5664a6 866# define FUNC_PREHOOK(_)
1a0c09c4
MW		 867#endif
868#ifndef FUNC_POSTHOOK
1e5664a6 869# define FUNC_POSTHOOK(_)
1a0c09c4
MW		 870#endif
871#ifndef ENDFUNC_HOOK
1e5664a6 872# define ENDFUNC_HOOK(_)
1a0c09c4
MW		 873#endif
874
875#ifndef F
876# define F(name) name
877#endif
878
879#ifndef TYPE_FUNC
880# define TYPE_FUNC(name)
881#endif
882
883#ifndef SIZE_OBJ
884# define SIZE_OBJ(name)
885#endif
886
1aa5bfa8
MW		 887#if __ELF__ && defined(WANT_EXECUTABLE_STACK)
888 .pushsection .note.GNU-stack, "", _SECTTY(progbits)
889 .popsection
890#endif
891
1a0c09c4 892///----- That's all, folks --------------------------------------------------
Catacomb cryptographic library