Commit | Line | Data |
---|---|---|
1a0c09c4 MW |
1 | /// -*- mode: asm; asm-comment-char: ?/ -*- |
2 | /// | |
08b868da | 3 | /// Common definitions for asesembler source files |
1a0c09c4 MW |
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 | ||
8ce88ea5 MW |
27 | #ifndef CATACOMB_ASM_COMMON_H |
28 | #define CATACOMB_ASM_COMMON_H | |
29 | ||
1a0c09c4 MW |
30 | ///-------------------------------------------------------------------------- |
31 | /// General definitions. | |
32 | ||
898f32b3 MW |
33 | // Preprocessor hacks. |
34 | #define STRINGY(x) _STRINGY(x, y) | |
35 | #define _STRINGY(x) #x | |
36 | #define GLUE(x, y) _GLUE(x, y) | |
37 | #define _GLUE(x, y) x##y | |
38 | #define _EMPTY | |
39 | ||
f8e509a9 MW |
40 | // Some useful variables. |
41 | .L$_subsec = 0 | |
42 | ||
43 | // Literal pools done the hard way. | |
44 | #define _LIT .text .L$_subsec + 1 | |
45 | #define _ENDLIT .text .L$_subsec | |
6c54cbd3 | 46 | #define _LTORG .L$_subsec = .L$_subsec + 2; .text .L$_subsec |
f8e509a9 | 47 | |
645fcce0 MW |
48 | // ELF section types. |
49 | #if __ELF__ | |
50 | # if CPUFAM_ARMEL | |
51 | # define _SECTTY(ty) %ty | |
52 | # else | |
53 | # define _SECTTY(ty) @ty | |
54 | # endif | |
55 | #endif | |
56 | ||
57 | // Section selection. | |
58 | #define TEXT .text .L$_subsec | |
59 | #if ABI_WIN | |
60 | # define RODATA .section .rdata, "dr" | |
61 | #elif __ELF__ | |
62 | # define RODATA .section .rodata, "a", _SECTTY(progbits) | |
63 | #else | |
64 | # define RODATA TEXT | |
65 | #endif | |
66 | #define DATA .data | |
67 | ||
1a517bb3 MW |
68 | // Announcing an internal function. |
69 | #define INTFUNC(name) \ | |
1a0c09c4 | 70 | TYPE_FUNC(name); \ |
8a1aa284 | 71 | .macro ENDFUNC; _ENDFUNC(name); .endm; \ |
0923a413 | 72 | .L$_prologue_p = 0; .L$_frameptr_p = 0; \ |
1a0c09c4 | 73 | FUNC_PREHOOK(name); \ |
1a517bb3 | 74 | name: \ |
1a0c09c4 MW |
75 | FUNC_POSTHOOK(name) |
76 | ||
1a517bb3 MW |
77 | // Announcing an external function. |
78 | #define FUNC(name) \ | |
79 | .globl F(name); \ | |
80 | INTFUNC(F(name)) | |
81 | ||
1a0c09c4 MW |
82 | // Marking the end of a function. |
83 | #define _ENDFUNC(name) \ | |
0923a413 MW |
84 | .if ~ .L$_prologue_p; .error "Missing `endprologue'"; .endif; \ |
85 | .if .L$_frameptr_p; .purgem dropfp; .endif; \ | |
1a0c09c4 MW |
86 | .purgem ENDFUNC; \ |
87 | SIZE_OBJ(name); \ | |
f8e509a9 | 88 | ENDFUNC_HOOK(name); \ |
6c54cbd3 | 89 | _LTORG |
1a0c09c4 | 90 | |
8ae4c946 MW |
91 | // Make a helper function, if necessary. |
92 | #define AUXFN(name) \ | |
93 | .ifndef .L$_auxfn_def.name; \ | |
94 | .text 7128; \ | |
95 | .macro _ENDAUXFN; _ENDAUXFN_TAIL(name); .endm; \ | |
96 | FUNC_PREHOOK(name); \ | |
97 | name: | |
98 | #define _ENDAUXFN_TAIL(name) \ | |
99 | .purgem _ENDAUXFN; \ | |
100 | .text .L$_subsec; \ | |
101 | .L$_auxfn_def.name = 1 | |
102 | #define ENDAUXFN _ENDAUXFN; .endif | |
103 | ||
1a0c09c4 MW |
104 | ///-------------------------------------------------------------------------- |
105 | /// ELF-specific hacking. | |
106 | ||
107 | #if __ELF__ | |
108 | ||
109 | #if __PIC__ || __PIE__ | |
110 | # define WANT_PIC 1 | |
111 | #endif | |
112 | ||
113 | #define TYPE_FUNC(name) .type name, STT_FUNC | |
114 | ||
115 | #define SIZE_OBJ(name) .size name, . - name | |
116 | ||
117 | #endif | |
118 | ||
119 | ///-------------------------------------------------------------------------- | |
0f23f75f MW |
120 | /// Windows-specific hacking. |
121 | ||
122 | #if ABI_WIN | |
1a0c09c4 MW |
123 | |
124 | #if CPUFAM_X86 | |
0f23f75f MW |
125 | # define F(name) _##name |
126 | #endif | |
127 | ||
128 | #endif | |
129 | ||
130 | ///-------------------------------------------------------------------------- | |
131 | /// x86- and amd64-specific hacking. | |
132 | /// | |
133 | /// It's (slightly) easier to deal with both of these in one go. | |
134 | ||
135 | #if CPUFAM_X86 || CPUFAM_AMD64 | |
1a0c09c4 | 136 | |
2cb17e02 MW |
137 | // Word size. |
138 | #if CPUFAM_X86 | |
139 | # define WORDSZ 4 | |
140 | #endif | |
141 | #if CPUFAM_AMD64 | |
142 | # define WORDSZ 8 | |
143 | #endif | |
144 | ||
1a0c09c4 MW |
145 | // Set the function hooks. |
146 | #define FUNC_PREHOOK(_) .balign 16 | |
147 | ||
f71dd54d MW |
148 | // On Windows, arrange to install stack-unwinding data. |
149 | #if CPUFAM_AMD64 && ABI_WIN | |
150 | # define FUNC_POSTHOOK(name) .seh_proc name | |
151 | # define ENDFUNC_HOOK(_) .seh_endproc | |
152 | // Procedures are expected to invoke `.seh_setframe' if necessary, and | |
153 | // `.seh_pushreg' and friends, and `.seh_endprologue'. | |
154 | #endif | |
155 | ||
0923a413 MW |
156 | #if __ELF__ |
157 | # define FUNC_POSTHOOK(_) .cfi_startproc | |
158 | # define ENDFUNC_HOOK(_) .cfi_endproc | |
159 | #endif | |
160 | ||
1a0c09c4 MW |
161 | // Don't use the wretched AT&T syntax. It's festooned with pointless |
162 | // punctuation, and all of the data movement is backwards. Ugh! | |
163 | .intel_syntax noprefix | |
164 | ||
165 | // Call external subroutine at ADDR, possibly via PLT. | |
8a1aa284 | 166 | .macro callext addr |
1a0c09c4 MW |
167 | #if WANT_PIC |
168 | call \addr@PLT | |
169 | #else | |
170 | call \addr | |
171 | #endif | |
8a1aa284 | 172 | .endm |
1a0c09c4 MW |
173 | |
174 | // Do I need to arrange a spare GOT register? | |
175 | #if WANT_PIC && CPUFAM_X86 | |
176 | # define NEED_GOT 1 | |
177 | #endif | |
178 | #define GOTREG ebx // Not needed in AMD64 so don't care. | |
179 | ||
180 | // Maybe load GOT address into GOT. | |
8a1aa284 | 181 | .macro ldgot got=GOTREG |
0f23f75f | 182 | #if WANT_PIC && CPUFAM_X86 |
8ae4c946 | 183 | AUXFN(_ldgot.\got) |
1a0c09c4 MW |
184 | mov \got, [esp] |
185 | ret | |
8ae4c946 MW |
186 | ENDAUXFN |
187 | call _ldgot.\got | |
188 | add \got, offset _GLOBAL_OFFSET_TABLE_ | |
1a0c09c4 | 189 | #endif |
8a1aa284 | 190 | .endm |
1a0c09c4 MW |
191 | |
192 | // Load address of external symbol ADDR into REG, maybe using GOT. | |
8a1aa284 | 193 | .macro leaext reg, addr, got=GOTREG |
1a0c09c4 | 194 | #if WANT_PIC |
0f23f75f | 195 | # if CPUFAM_X86 |
1a0c09c4 | 196 | mov \reg, [\got + \addr@GOT] |
0f23f75f MW |
197 | # endif |
198 | # if CPUFAM_AMD64 | |
199 | mov \reg, \addr@GOTPCREL[rip] | |
200 | # endif | |
1a0c09c4 | 201 | #else |
0f23f75f | 202 | # if CPUFAM_X86 |
1a0c09c4 | 203 | mov \reg, offset \addr |
0f23f75f MW |
204 | # endif |
205 | # if CPUFAM_AMD64 | |
206 | lea \reg, \addr[rip] | |
207 | # endif | |
1a0c09c4 | 208 | #endif |
8a1aa284 | 209 | .endm |
1a0c09c4 MW |
210 | |
211 | // Address expression (possibly using a base register, and a displacement) | |
212 | // referring to ADDR, which is within our module, maybe using GOT. | |
213 | #define INTADDR(...) INTADDR__0(__VA_ARGS__, GOTREG, dummy) | |
214 | #define INTADDR__0(addr, got, ...) INTADDR__1(addr, got) | |
0f23f75f MW |
215 | #if CPUFAM_AMD64 |
216 | # define INTADDR__1(addr, got) addr + rip | |
217 | #elif WANT_PIC | |
1a0c09c4 MW |
218 | # define INTADDR__1(addr, got) got + addr@GOTOFF |
219 | #else | |
220 | # define INTADDR__1(addr, got) addr | |
221 | #endif | |
222 | ||
a117c06f MW |
223 | // Permutations for SIMD instructions. SHUF(A, B, C, D) is an immediate, |
224 | // suitable for use in `pshufd' or `shufpd', which copies element A | |
225 | // (0 <= A < 4) of the source to element 0 of the destination, element B to | |
226 | // element 1, element C to element 2, and element D to element 3. | |
227 | #define SHUF(a, b, c, d) ((a) + 4*(b) + 16*(c) + 64*(d)) | |
a13b5730 | 228 | |
43ea7558 MW |
229 | // Map register names to their individual pieces. |
230 | ||
231 | // Apply decoration decor to (internal) register name reg of type ty. | |
232 | // | |
233 | // See `R_...' for internal register names. Decorations are as follows. | |
234 | // | |
235 | // b low byte (e.g., `al', `r8b') | |
236 | // h high byte (e.g., `ah') | |
237 | // w word (e.g., `ax', `r8w') | |
238 | // d doubleword (e.g., `eax', `r8d') | |
239 | // q quadword (e.g., `rax', `r8') | |
240 | // r whole register (doubleword on x86, quadword on amd64) | |
241 | // | |
242 | // And types are as follows. | |
243 | // | |
244 | // abcd the four traditional registers `a', `b', `c', `d' | |
245 | // xp the four pointer registers `si', `di', `bp', `sp' | |
246 | // ip the instruction pointer `ip' | |
247 | // rn the AMD64 numbered registers `r8'--`r15' | |
248 | #define _DECOR(ty, decor, reg) _DECOR_##ty##_##decor(reg) | |
249 | ||
250 | // Internal macros: _DECOR_ty_decor(reg) applies decoration decor to | |
251 | // (internal) register name reg of type ty. | |
252 | ||
253 | #define _DECOR_abcd_b(reg) reg##l | |
254 | #define _DECOR_abcd_h(reg) reg##h | |
255 | #define _DECOR_abcd_w(reg) reg##x | |
256 | #define _DECOR_abcd_d(reg) e##reg##x | |
257 | #if CPUFAM_AMD64 | |
258 | # define _DECOR_abcd_q(reg) r##reg##x | |
259 | #endif | |
260 | ||
43ea7558 MW |
261 | #define _DECOR_xp_w(reg) reg |
262 | #define _DECOR_xp_d(reg) e##reg | |
263 | #if CPUFAM_AMD64 | |
a105615f | 264 | # define _DECOR_xp_b(reg) reg##l |
43ea7558 MW |
265 | # define _DECOR_xp_q(reg) r##reg |
266 | #endif | |
267 | ||
268 | #define _DECOR_ip_w(reg) reg | |
269 | #define _DECOR_ip_d(reg) e##reg | |
270 | #if CPUFAM_AMD64 | |
271 | # define _DECOR_ip_q(reg) r##reg | |
272 | #endif | |
273 | ||
274 | #if CPUFAM_AMD64 | |
275 | # define _DECOR_rn_b(reg) reg##b | |
276 | # define _DECOR_rn_w(reg) reg##w | |
277 | # define _DECOR_rn_d(reg) reg##d | |
278 | # define _DECOR_rn_q(reg) reg | |
279 | # define _DECOR_rn_r(reg) reg | |
280 | #endif | |
281 | ||
005cd277 MW |
282 | #define _DECOR_mem_b(addr) byte ptr addr |
283 | #define _DECOR_mem_w(addr) word ptr addr | |
284 | #define _DECOR_mem_d(addr) dword ptr addr | |
285 | #if CPUFAM_AMD64 | |
286 | # define _DECOR_mem_q(addr) qword ptr addr | |
287 | #endif | |
288 | ||
7e251005 MW |
289 | #define _DECOR_imm_b(imm) byte imm |
290 | #define _DECOR_imm_w(imm) word imm | |
291 | #define _DECOR_imm_d(imm) dword imm | |
292 | #if CPUFAM_AMD64 | |
293 | # define _DECOR_imm_q(imm) qword imm | |
294 | #endif | |
295 | ||
43ea7558 MW |
296 | #if CPUFAM_X86 |
297 | # define _DECOR_abcd_r(reg) e##reg##x | |
298 | # define _DECOR_xp_r(reg) e##reg | |
299 | # define _DECOR_ip_r(reg) e##reg | |
3c0490d1 | 300 | # define _DECOR_mem_r(addr) dword ptr addr |
7e251005 | 301 | # define _DECOR_imm_r(imm) dword imm |
43ea7558 MW |
302 | #endif |
303 | #if CPUFAM_AMD64 | |
304 | # define _DECOR_abcd_r(reg) r##reg##x | |
305 | # define _DECOR_xp_r(reg) r##reg | |
306 | # define _DECOR_ip_r(reg) r##reg | |
3c0490d1 | 307 | # define _DECOR_mem_r(addr) qword ptr addr |
7e251005 | 308 | # define _DECOR_imm_r(imm) qword imm |
43ea7558 MW |
309 | #endif |
310 | ||
43ea7558 MW |
311 | // R_r(decor) applies decoration decor to register r, which is an internal |
312 | // register name. The internal register names are: `ip', `a', `b', `c', `d', | |
313 | // `si', `di', `bp', `sp', `r8'--`r15'. | |
314 | #define R_ip(decor) _DECOR(ip, decor, ip) | |
315 | #define R_a(decor) _DECOR(abcd, decor, a) | |
316 | #define R_b(decor) _DECOR(abcd, decor, b) | |
317 | #define R_c(decor) _DECOR(abcd, decor, c) | |
318 | #define R_d(decor) _DECOR(abcd, decor, d) | |
319 | #define R_si(decor) _DECOR(xp, decor, si) | |
320 | #define R_di(decor) _DECOR(xp, decor, di) | |
321 | #define R_bp(decor) _DECOR(xp, decor, bp) | |
322 | #define R_sp(decor) _DECOR(xp, decor, sp) | |
323 | #if CPUFAM_AMD64 | |
324 | # define R_r8(decor) _DECOR(rn, decor, r8) | |
325 | # define R_r9(decor) _DECOR(rn, decor, r9) | |
326 | # define R_r10(decor) _DECOR(rn, decor, r10) | |
327 | # define R_r11(decor) _DECOR(rn, decor, r11) | |
328 | # define R_r12(decor) _DECOR(rn, decor, r12) | |
329 | # define R_r13(decor) _DECOR(rn, decor, r13) | |
330 | # define R_r14(decor) _DECOR(rn, decor, r14) | |
331 | # define R_r15(decor) _DECOR(rn, decor, r15) | |
332 | #endif | |
333 | ||
334 | // Refer to an in-memory datum of the type implied by decor residing at | |
335 | // address addr (which should supply its own square-brackets). | |
336 | #define MEM(decor, addr) _DECOR(mem, decor, addr) | |
337 | ||
7e251005 MW |
338 | // Refer to an immediate datum of the type implied by decor. |
339 | #define IMM(decor, imm) _DECOR(mem, decor, imm) | |
340 | ||
43ea7558 MW |
341 | // Applies decoration decor to assembler-level register name reg. |
342 | #define _REGFORM(reg, decor) _GLUE(_REGFORM_, reg)(decor) | |
343 | ||
344 | // Internal macros: _REGFORM_r(decor) applies decoration decor to an | |
345 | // assembler-level register name, in place of any decoration that register | |
346 | // name has already. | |
347 | ||
348 | #define _REGFORM_ip(decor) R_ip(decor) | |
349 | #define _REGFORM_eip(decor) R_ip(decor) | |
350 | ||
351 | #define _REGFORM_a(decor) R_a(decor) | |
352 | #define _REGFORM_al(decor) R_a(decor) | |
353 | #define _REGFORM_ah(decor) R_a(decor) | |
354 | #define _REGFORM_ax(decor) R_a(decor) | |
355 | #define _REGFORM_eax(decor) R_a(decor) | |
356 | ||
357 | #define _REGFORM_b(decor) R_b(decor) | |
358 | #define _REGFORM_bl(decor) R_b(decor) | |
359 | #define _REGFORM_bh(decor) R_b(decor) | |
360 | #define _REGFORM_bx(decor) R_b(decor) | |
361 | #define _REGFORM_ebx(decor) R_b(decor) | |
362 | ||
363 | #define _REGFORM_c(decor) R_c(decor) | |
364 | #define _REGFORM_cl(decor) R_c(decor) | |
365 | #define _REGFORM_ch(decor) R_c(decor) | |
366 | #define _REGFORM_cx(decor) R_c(decor) | |
367 | #define _REGFORM_ecx(decor) R_c(decor) | |
368 | ||
369 | #define _REGFORM_d(decor) R_d(decor) | |
370 | #define _REGFORM_dl(decor) R_d(decor) | |
371 | #define _REGFORM_dh(decor) R_d(decor) | |
372 | #define _REGFORM_dx(decor) R_d(decor) | |
373 | #define _REGFORM_edx(decor) R_d(decor) | |
374 | ||
375 | #define _REGFORM_si(decor) R_si(decor) | |
376 | #define _REGFORM_sil(decor) R_si(decor) | |
377 | #define _REGFORM_esi(decor) R_si(decor) | |
378 | ||
379 | #define _REGFORM_di(decor) R_di(decor) | |
380 | #define _REGFORM_dil(decor) R_di(decor) | |
381 | #define _REGFORM_edi(decor) R_di(decor) | |
382 | ||
383 | #define _REGFORM_bp(decor) R_bp(decor) | |
384 | #define _REGFORM_bpl(decor) R_bp(decor) | |
385 | #define _REGFORM_ebp(decor) R_bp(decor) | |
386 | ||
387 | #define _REGFORM_sp(decor) R_sp(decor) | |
388 | #define _REGFORM_spl(decor) R_sp(decor) | |
389 | #define _REGFORM_esp(decor) R_sp(decor) | |
390 | ||
391 | #if CPUFAM_AMD64 | |
392 | ||
393 | # define _REGFORM_rip(decor) R_ip(decor) | |
394 | # define _REGFORM_rsp(decor) R_sp(decor) | |
395 | # define _REGFORM_rbp(decor) R_bp(decor) | |
396 | # define _REGFORM_rdi(decor) R_di(decor) | |
397 | # define _REGFORM_rsi(decor) R_si(decor) | |
398 | # define _REGFORM_rdx(decor) R_d(decor) | |
399 | # define _REGFORM_rcx(decor) R_c(decor) | |
400 | # define _REGFORM_rbx(decor) R_b(decor) | |
401 | # define _REGFORM_rax(decor) R_a(decor) | |
402 | ||
403 | # define _REGFORM_r8(decor) R_r8(decor) | |
404 | # define _REGFORM_r8b(decor) R_r8(decor) | |
405 | # define _REGFORM_r8w(decor) R_r8(decor) | |
406 | # define _REGFORM_r8d(decor) R_r8(decor) | |
407 | ||
408 | # define _REGFORM_r9(decor) R_r9(decor) | |
409 | # define _REGFORM_r9b(decor) R_r9(decor) | |
410 | # define _REGFORM_r9w(decor) R_r9(decor) | |
411 | # define _REGFORM_r9d(decor) R_r9(decor) | |
412 | ||
413 | # define _REGFORM_r10(decor) R_r10(decor) | |
414 | # define _REGFORM_r10b(decor) R_r10(decor) | |
415 | # define _REGFORM_r10w(decor) R_r10(decor) | |
416 | # define _REGFORM_r10d(decor) R_r10(decor) | |
417 | ||
418 | # define _REGFORM_r11(decor) R_r11(decor) | |
419 | # define _REGFORM_r11b(decor) R_r11(decor) | |
420 | # define _REGFORM_r11w(decor) R_r11(decor) | |
421 | # define _REGFORM_r11d(decor) R_r11(decor) | |
422 | ||
423 | # define _REGFORM_r12(decor) R_r12(decor) | |
424 | # define _REGFORM_r12b(decor) R_r12(decor) | |
425 | # define _REGFORM_r12w(decor) R_r12(decor) | |
426 | # define _REGFORM_r12d(decor) R_r12(decor) | |
427 | ||
428 | # define _REGFORM_r13(decor) R_r13(decor) | |
429 | # define _REGFORM_r13b(decor) R_r13(decor) | |
430 | # define _REGFORM_r13w(decor) R_r13(decor) | |
431 | # define _REGFORM_r13d(decor) R_r13(decor) | |
432 | ||
433 | # define _REGFORM_r14(decor) R_r14(decor) | |
434 | # define _REGFORM_r14b(decor) R_r14(decor) | |
435 | # define _REGFORM_r14w(decor) R_r14(decor) | |
436 | # define _REGFORM_r14d(decor) R_r14(decor) | |
437 | ||
438 | # define _REGFORM_r15(decor) R_r15(decor) | |
439 | # define _REGFORM_r15b(decor) R_r15(decor) | |
440 | # define _REGFORM_r15w(decor) R_r15(decor) | |
441 | # define _REGFORM_r15d(decor) R_r15(decor) | |
442 | ||
443 | #endif | |
444 | ||
445 | // Macros for converting register names. | |
446 | #define BYTE(reg) _REGFORM(reg, b) | |
447 | #define HIBYTE(reg) _REGFORM(reg, h) | |
448 | #define WORD(reg) _REGFORM(reg, w) | |
449 | #define DWORD(reg) _REGFORM(reg, d) | |
450 | #if CPUFAM_AMD64 | |
451 | # define QWORD(reg) _REGFORM(reg, q) | |
452 | #endif | |
453 | #define WHOLE(reg) _REGFORM(reg, r) | |
454 | ||
0923a413 | 455 | // Stack management and unwinding. |
42c44b27 | 456 | .macro setfp fp=R_bp(r), offset=0 |
0923a413 MW |
457 | .if \offset == 0 |
458 | mov \fp, R_sp(r) | |
459 | #if __ELF__ | |
460 | .cfi_def_cfa_register \fp | |
461 | #endif | |
462 | #if ABI_WIN && CPUFAM_AMD64 | |
463 | .seh_setframe \fp, 0 | |
464 | #endif | |
465 | .else | |
466 | lea \fp, [R_sp(r) + \offset] | |
467 | #if __ELF__ | |
468 | .cfi_def_cfa_register \fp | |
469 | .cfi_adjust_cfa_offset -\offset | |
470 | #endif | |
471 | #if ABI_WIN && CPUFAM_AMD64 | |
472 | .seh_setframe \fp, \offset | |
473 | #endif | |
474 | .endif | |
475 | .L$_frameptr_p = -1 | |
476 | .macro dropfp; _dropfp \fp, \offset; .endm | |
477 | .endm | |
478 | ||
cdc153a5 | 479 | .macro _dropfp fp, offset=0 |
0923a413 MW |
480 | .if \offset == 0 |
481 | mov R_sp(r), \fp | |
482 | #if __ELF__ | |
483 | .cfi_def_cfa_register R_sp(r) | |
484 | #endif | |
485 | .else | |
486 | lea R_sp(r), [\fp - \offset] | |
487 | #if __ELF__ | |
488 | .cfi_def_cfa_register R_sp(r) | |
489 | .cfi_adjust_cfa_offset +\offset | |
490 | #endif | |
491 | .endif | |
492 | .L$_frameptr_p = 0 | |
493 | .purgem dropfp | |
494 | .endm | |
495 | ||
496 | .macro stalloc n | |
497 | sub R_sp(r), \n | |
498 | #if __ELF__ | |
499 | .cfi_adjust_cfa_offset +\n | |
500 | #endif | |
501 | #if ABI_WIN && CPUFAM_AMD64 | |
502 | .seh_stackalloc \n | |
503 | #endif | |
504 | .endm | |
505 | ||
506 | .macro stfree n | |
507 | add R_sp(r), \n | |
508 | #if __ELF__ | |
509 | .cfi_adjust_cfa_offset -\n | |
510 | #endif | |
511 | .endm | |
512 | ||
513 | .macro pushreg r | |
514 | push \r | |
515 | #if __ELF__ | |
516 | .cfi_adjust_cfa_offset +WORDSZ | |
517 | .cfi_rel_offset \r, 0 | |
518 | #endif | |
519 | #if ABI_WIN && CPUFAM_AMD64 | |
520 | .seh_pushreg \r | |
521 | #endif | |
522 | .endm | |
523 | ||
524 | .macro popreg r | |
525 | pop \r | |
526 | #if __ELF__ | |
527 | .cfi_adjust_cfa_offset -WORDSZ | |
528 | .cfi_restore \r | |
529 | #endif | |
530 | .endm | |
531 | ||
532 | .macro savexmm r, offset | |
533 | movdqa [R_sp(r) + \offset], \r | |
534 | #if ABI_WIN && CPUFAM_AMD64 | |
535 | .seh_savexmm \r, \offset | |
536 | #endif | |
537 | .endm | |
538 | ||
539 | .macro rstrxmm r, offset | |
540 | movdqa \r, [R_sp(r) + \offset] | |
541 | .endm | |
542 | ||
543 | .macro endprologue | |
544 | #if ABI_WIN && CPUFAM_AMD64 | |
545 | .seh_endprologue | |
546 | #endif | |
547 | .L$_prologue_p = -1 | |
548 | .endm | |
549 | ||
1a0c09c4 MW |
550 | #endif |
551 | ||
552 | ///-------------------------------------------------------------------------- | |
61bd904b MW |
553 | /// ARM-specific hacking. |
554 | ||
59d86860 | 555 | #if CPUFAM_ARMEL |
61bd904b | 556 | |
9f6eb05d MW |
557 | // ARM/Thumb mode things. Use ARM by default. |
558 | #define ARM .arm; .L$_pcoff = 8 | |
559 | #define THUMB .thumb; .L$_pcoff = 4 | |
560 | ARM | |
561 | ||
61bd904b | 562 | // Set the function hooks. |
0923a413 MW |
563 | #define FUNC_PREHOOK(_) .balign 4; .fnstart |
564 | #define ENDFUNC_HOOK(_) .fnend; .ltorg | |
61bd904b MW |
565 | |
566 | // Call external subroutine at ADDR, possibly via PLT. | |
8a1aa284 | 567 | .macro callext addr, cond= |
61bd904b MW |
568 | #if WANT_PIC |
569 | bl\cond \addr(PLT) | |
570 | #else | |
571 | bl\cond \addr | |
572 | #endif | |
8a1aa284 | 573 | .endm |
61bd904b MW |
574 | |
575 | // Do I need to arrange a spare GOT register? | |
576 | #if WANT_PIC | |
577 | # define NEED_GOT 1 | |
578 | #endif | |
579 | #define GOTREG r9 | |
580 | ||
581 | // Maybe load GOT address into GOT. | |
8a1aa284 | 582 | .macro ldgot cond=, got=GOTREG |
61bd904b | 583 | #if WANT_PIC |
adca2a18 MW |
584 | ldr\cond \got, .L$_ldgot$\@ |
585 | .L$_ldgot_pc$\@: | |
2d03a881 | 586 | add\cond \got, pc, \got |
8a1aa284 | 587 | _LIT |
adca2a18 MW |
588 | .balign 4 |
589 | .L$_ldgot$\@: | |
9f6eb05d | 590 | .word _GLOBAL_OFFSET_TABLE_ - .L$_ldgot_pc$\@ - .L$_pcoff |
8a1aa284 | 591 | _ENDLIT |
61bd904b | 592 | #endif |
8a1aa284 | 593 | .endm |
61bd904b MW |
594 | |
595 | // Load address of external symbol ADDR into REG, maybe using GOT. | |
8a1aa284 | 596 | .macro leaext reg, addr, cond=, got=GOTREG |
61bd904b | 597 | #if WANT_PIC |
adca2a18 | 598 | ldr\cond \reg, .L$_leaext$\@ |
2d03a881 | 599 | ldr\cond \reg, [\got, \reg] |
8a1aa284 | 600 | _LIT |
adca2a18 MW |
601 | .balign 4 |
602 | .L$_leaext$\@: | |
603 | .word \addr(GOT) | |
8a1aa284 | 604 | _ENDLIT |
61bd904b | 605 | #else |
2d03a881 | 606 | ldr\cond \reg, =\addr |
61bd904b | 607 | #endif |
8a1aa284 | 608 | .endm |
61bd904b | 609 | |
0c53ac58 | 610 | // Load address of external symbol ADDR into REG directly. |
8a1aa284 | 611 | .macro leaextq reg, addr, cond= |
0c53ac58 MW |
612 | #if WANT_PIC |
613 | ldr\cond \reg, .L$_leaextq$\@ | |
614 | .L$_leaextq_pc$\@: | |
b6db2017 | 615 | .if .L$_pcoff == 8 |
0c53ac58 | 616 | ldr\cond \reg, [pc, \reg] |
b6db2017 | 617 | .else |
9f6eb05d MW |
618 | add\cond \reg, pc |
619 | ldr\cond \reg, [\reg] | |
b6db2017 | 620 | .endif |
8a1aa284 | 621 | _LIT |
0c53ac58 MW |
622 | .balign 4 |
623 | .L$_leaextq$\@: | |
9f6eb05d | 624 | .word \addr(GOT_PREL) + (. - .L$_leaextq_pc$\@ - .L$_pcoff) |
8a1aa284 | 625 | _ENDLIT |
0c53ac58 MW |
626 | #else |
627 | ldr\cond \reg, =\addr | |
628 | #endif | |
8a1aa284 | 629 | .endm |
0c53ac58 | 630 | |
1a031196 MW |
631 | .macro vzero vz=q15 |
632 | // Set VZ (default q15) to zero. | |
633 | vmov.u32 \vz, #0 | |
634 | .endm | |
635 | ||
636 | .macro vshl128 vd, vn, nbit, vz=q15 | |
637 | // Set VD to VN shifted left by NBIT. Assume VZ (default q15) is | |
638 | // all-bits-zero. NBIT must be a multiple of 8. | |
639 | .if \nbit&3 != 0 | |
640 | .error "shift quantity must be whole number of bytes" | |
641 | .endif | |
642 | vext.8 \vd, \vz, \vn, #16 - (\nbit >> 3) | |
643 | .endm | |
644 | ||
645 | .macro vshr128 vd, vn, nbit, vz=q15 | |
646 | // Set VD to VN shifted right by NBIT. Assume VZ (default q15) is | |
647 | // all-bits-zero. NBIT must be a multiple of 8. | |
648 | .if \nbit&3 != 0 | |
649 | .error "shift quantity must be whole number of bytes" | |
650 | .endif | |
651 | vext.8 \vd, \vn, \vz, #\nbit >> 3 | |
652 | .endm | |
653 | ||
43ea7558 MW |
654 | // Apply decoration decor to register name reg. |
655 | #define _REGFORM(reg, decor) _GLUE(_REGFORM_, reg)(decor) | |
656 | ||
657 | // Internal macros: `_REGFORM_r(decor)' applies decoration decor to register | |
658 | // name r. | |
659 | ||
660 | #define _REGFORM_s0(decor) _DECOR(s, decor, 0) | |
661 | #define _REGFORM_s1(decor) _DECOR(s, decor, 1) | |
662 | #define _REGFORM_s2(decor) _DECOR(s, decor, 2) | |
663 | #define _REGFORM_s3(decor) _DECOR(s, decor, 3) | |
664 | #define _REGFORM_s4(decor) _DECOR(s, decor, 4) | |
665 | #define _REGFORM_s5(decor) _DECOR(s, decor, 5) | |
666 | #define _REGFORM_s6(decor) _DECOR(s, decor, 6) | |
667 | #define _REGFORM_s7(decor) _DECOR(s, decor, 7) | |
668 | #define _REGFORM_s8(decor) _DECOR(s, decor, 8) | |
669 | #define _REGFORM_s9(decor) _DECOR(s, decor, 9) | |
670 | #define _REGFORM_s10(decor) _DECOR(s, decor, 10) | |
671 | #define _REGFORM_s11(decor) _DECOR(s, decor, 11) | |
672 | #define _REGFORM_s12(decor) _DECOR(s, decor, 12) | |
673 | #define _REGFORM_s13(decor) _DECOR(s, decor, 13) | |
674 | #define _REGFORM_s14(decor) _DECOR(s, decor, 14) | |
675 | #define _REGFORM_s15(decor) _DECOR(s, decor, 15) | |
676 | #define _REGFORM_s16(decor) _DECOR(s, decor, 16) | |
677 | #define _REGFORM_s17(decor) _DECOR(s, decor, 17) | |
678 | #define _REGFORM_s18(decor) _DECOR(s, decor, 18) | |
679 | #define _REGFORM_s19(decor) _DECOR(s, decor, 19) | |
680 | #define _REGFORM_s20(decor) _DECOR(s, decor, 20) | |
681 | #define _REGFORM_s21(decor) _DECOR(s, decor, 21) | |
682 | #define _REGFORM_s22(decor) _DECOR(s, decor, 22) | |
683 | #define _REGFORM_s23(decor) _DECOR(s, decor, 23) | |
684 | #define _REGFORM_s24(decor) _DECOR(s, decor, 24) | |
685 | #define _REGFORM_s25(decor) _DECOR(s, decor, 25) | |
686 | #define _REGFORM_s26(decor) _DECOR(s, decor, 26) | |
687 | #define _REGFORM_s27(decor) _DECOR(s, decor, 27) | |
688 | #define _REGFORM_s28(decor) _DECOR(s, decor, 28) | |
689 | #define _REGFORM_s29(decor) _DECOR(s, decor, 29) | |
690 | #define _REGFORM_s30(decor) _DECOR(s, decor, 30) | |
691 | #define _REGFORM_s31(decor) _DECOR(s, decor, 31) | |
692 | ||
693 | #define _REGFORM_d0(decor) _DECOR(d, decor, 0) | |
694 | #define _REGFORM_d1(decor) _DECOR(d, decor, 1) | |
695 | #define _REGFORM_d2(decor) _DECOR(d, decor, 2) | |
696 | #define _REGFORM_d3(decor) _DECOR(d, decor, 3) | |
697 | #define _REGFORM_d4(decor) _DECOR(d, decor, 4) | |
698 | #define _REGFORM_d5(decor) _DECOR(d, decor, 5) | |
699 | #define _REGFORM_d6(decor) _DECOR(d, decor, 6) | |
700 | #define _REGFORM_d7(decor) _DECOR(d, decor, 7) | |
701 | #define _REGFORM_d8(decor) _DECOR(d, decor, 8) | |
702 | #define _REGFORM_d9(decor) _DECOR(d, decor, 9) | |
703 | #define _REGFORM_d10(decor) _DECOR(d, decor, 10) | |
704 | #define _REGFORM_d11(decor) _DECOR(d, decor, 11) | |
705 | #define _REGFORM_d12(decor) _DECOR(d, decor, 12) | |
706 | #define _REGFORM_d13(decor) _DECOR(d, decor, 13) | |
707 | #define _REGFORM_d14(decor) _DECOR(d, decor, 14) | |
708 | #define _REGFORM_d15(decor) _DECOR(d, decor, 15) | |
709 | #define _REGFORM_d16(decor) _DECOR(d, decor, 16) | |
710 | #define _REGFORM_d17(decor) _DECOR(d, decor, 17) | |
711 | #define _REGFORM_d18(decor) _DECOR(d, decor, 18) | |
712 | #define _REGFORM_d19(decor) _DECOR(d, decor, 19) | |
713 | #define _REGFORM_d20(decor) _DECOR(d, decor, 20) | |
714 | #define _REGFORM_d21(decor) _DECOR(d, decor, 21) | |
715 | #define _REGFORM_d22(decor) _DECOR(d, decor, 22) | |
716 | #define _REGFORM_d23(decor) _DECOR(d, decor, 23) | |
717 | #define _REGFORM_d24(decor) _DECOR(d, decor, 24) | |
718 | #define _REGFORM_d25(decor) _DECOR(d, decor, 25) | |
719 | #define _REGFORM_d26(decor) _DECOR(d, decor, 26) | |
720 | #define _REGFORM_d27(decor) _DECOR(d, decor, 27) | |
721 | #define _REGFORM_d28(decor) _DECOR(d, decor, 28) | |
722 | #define _REGFORM_d29(decor) _DECOR(d, decor, 29) | |
723 | #define _REGFORM_d30(decor) _DECOR(d, decor, 30) | |
724 | #define _REGFORM_d31(decor) _DECOR(d, decor, 31) | |
725 | ||
726 | #define _REGFORM_q0(decor) _DECOR(q, decor, 0) | |
727 | #define _REGFORM_q1(decor) _DECOR(q, decor, 1) | |
728 | #define _REGFORM_q2(decor) _DECOR(q, decor, 2) | |
729 | #define _REGFORM_q3(decor) _DECOR(q, decor, 3) | |
730 | #define _REGFORM_q4(decor) _DECOR(q, decor, 4) | |
731 | #define _REGFORM_q5(decor) _DECOR(q, decor, 5) | |
732 | #define _REGFORM_q6(decor) _DECOR(q, decor, 6) | |
733 | #define _REGFORM_q7(decor) _DECOR(q, decor, 7) | |
734 | #define _REGFORM_q8(decor) _DECOR(q, decor, 8) | |
735 | #define _REGFORM_q9(decor) _DECOR(q, decor, 9) | |
736 | #define _REGFORM_q10(decor) _DECOR(q, decor, 10) | |
737 | #define _REGFORM_q11(decor) _DECOR(q, decor, 11) | |
738 | #define _REGFORM_q12(decor) _DECOR(q, decor, 12) | |
739 | #define _REGFORM_q13(decor) _DECOR(q, decor, 13) | |
740 | #define _REGFORM_q14(decor) _DECOR(q, decor, 14) | |
741 | #define _REGFORM_q15(decor) _DECOR(q, decor, 15) | |
742 | ||
743 | // `_LOPART(n)' and `_HIPART(n)' return the numbers of the register halves of | |
744 | // register n, i.e., 2*n and 2*n + 1 respectively. | |
745 | #define _LOPART(n) _GLUE(_LOPART_, n) | |
746 | #define _HIPART(n) _GLUE(_HIPART_, n) | |
747 | ||
748 | // Internal macros: `_LOPART_n' and `_HIPART_n' return the numbers of the | |
749 | // register halves of register n, i.e., 2*n and 2*n + 1 respectively. | |
750 | ||
751 | #define _LOPART_0 0 | |
752 | #define _HIPART_0 1 | |
753 | #define _LOPART_1 2 | |
754 | #define _HIPART_1 3 | |
755 | #define _LOPART_2 4 | |
756 | #define _HIPART_2 5 | |
757 | #define _LOPART_3 6 | |
758 | #define _HIPART_3 7 | |
759 | #define _LOPART_4 8 | |
760 | #define _HIPART_4 9 | |
761 | #define _LOPART_5 10 | |
762 | #define _HIPART_5 11 | |
763 | #define _LOPART_6 12 | |
764 | #define _HIPART_6 13 | |
765 | #define _LOPART_7 14 | |
766 | #define _HIPART_7 15 | |
767 | #define _LOPART_8 16 | |
768 | #define _HIPART_8 17 | |
769 | #define _LOPART_9 18 | |
770 | #define _HIPART_9 19 | |
771 | #define _LOPART_10 20 | |
772 | #define _HIPART_10 21 | |
773 | #define _LOPART_11 22 | |
774 | #define _HIPART_11 23 | |
775 | #define _LOPART_12 24 | |
776 | #define _HIPART_12 25 | |
777 | #define _LOPART_13 26 | |
778 | #define _HIPART_13 27 | |
779 | #define _LOPART_14 28 | |
780 | #define _HIPART_14 29 | |
781 | #define _LOPART_15 30 | |
782 | #define _HIPART_15 31 | |
783 | ||
784 | // Return the register number of the pair containing register n, i.e., | |
785 | // floor(n/2). | |
786 | #define _PAIR(n) _GLUE(_PAIR_, n) | |
787 | ||
788 | // Internal macros: `_PAIR_n' returns the register number of the pair | |
789 | // containing register n, i.e., floor(n/2). | |
790 | #define _PAIR_0 0 | |
791 | #define _PAIR_1 0 | |
792 | #define _PAIR_2 1 | |
793 | #define _PAIR_3 1 | |
794 | #define _PAIR_4 2 | |
795 | #define _PAIR_5 2 | |
796 | #define _PAIR_6 3 | |
797 | #define _PAIR_7 3 | |
798 | #define _PAIR_8 4 | |
799 | #define _PAIR_9 4 | |
800 | #define _PAIR_10 5 | |
801 | #define _PAIR_11 5 | |
802 | #define _PAIR_12 6 | |
803 | #define _PAIR_13 6 | |
804 | #define _PAIR_14 7 | |
805 | #define _PAIR_15 7 | |
806 | #define _PAIR_16 8 | |
807 | #define _PAIR_17 8 | |
808 | #define _PAIR_18 9 | |
809 | #define _PAIR_19 9 | |
810 | #define _PAIR_20 10 | |
811 | #define _PAIR_21 10 | |
812 | #define _PAIR_22 11 | |
813 | #define _PAIR_23 11 | |
814 | #define _PAIR_24 12 | |
815 | #define _PAIR_25 12 | |
816 | #define _PAIR_26 13 | |
817 | #define _PAIR_27 13 | |
818 | #define _PAIR_28 14 | |
819 | #define _PAIR_29 14 | |
820 | #define _PAIR_30 15 | |
821 | #define _PAIR_31 15 | |
822 | ||
823 | // Apply decoration decor to register number n of type ty. Decorations are | |
824 | // as follows. | |
825 | // | |
826 | // decor types meaning | |
827 | // Q s, d the NEON qN register containing this one | |
828 | // D s the NEON dN register containing this one | |
829 | // D0 q the low 64-bit half of this one | |
830 | // D1 q the high 64-bit half of this one | |
831 | // S0 d, q the first 32-bit piece of this one | |
832 | // S1 d, q the second 32-bit piece of this one | |
833 | // S2 q the third 32-bit piece of this one | |
834 | // S3 q the fourth 32-bit piece of this one | |
835 | // Bn q the nth byte of this register, as a scalar | |
836 | // Hn q the nth halfword of this register, as a scalar | |
837 | // Wn q the nth word of this register, as a scalar | |
838 | #define _DECOR(ty, decor, n) _DECOR_##ty##_##decor(n) | |
839 | ||
840 | // Internal macros: `_DECOR_ty_decor(n)' applies decoration decor to register | |
841 | // number n of type ty. | |
842 | ||
843 | #define _DECOR_s_Q(n) GLUE(q, _PAIR(_PAIR(n))) | |
844 | #define _DECOR_s_D(n) GLUE(d, _PAIR(n)) | |
845 | ||
846 | #define _DECOR_d_Q(n) GLUE(q, _PAIR(n)) | |
847 | #define _DECOR_d_S0(n) GLUE(s, _LOPART(n)) | |
848 | #define _DECOR_d_S1(n) GLUE(s, _LOPART(n)) | |
849 | ||
850 | #define _DECOR_q_D0(n) GLUE(d, _LOPART(n)) | |
851 | #define _DECOR_q_D1(n) GLUE(d, _HIPART(n)) | |
852 | #define _DECOR_q_S0(n) GLUE(s, _LOPART(_LOPART(n))) | |
853 | #define _DECOR_q_S1(n) GLUE(s, _HIPART(_LOPART(n))) | |
854 | #define _DECOR_q_S2(n) GLUE(s, _LOPART(_HIPART(n))) | |
855 | #define _DECOR_q_S3(n) GLUE(s, _HIPART(_HIPART(n))) | |
856 | #define _DECOR_q_W0(n) GLUE(d, _LOPART(n))[0] | |
857 | #define _DECOR_q_W1(n) GLUE(d, _LOPART(n))[1] | |
858 | #define _DECOR_q_W2(n) GLUE(d, _HIPART(n))[0] | |
859 | #define _DECOR_q_W3(n) GLUE(d, _HIPART(n))[1] | |
860 | #define _DECOR_q_H0(n) GLUE(d, _LOPART(n))[0] | |
861 | #define _DECOR_q_H1(n) GLUE(d, _LOPART(n))[1] | |
862 | #define _DECOR_q_H2(n) GLUE(d, _LOPART(n))[2] | |
863 | #define _DECOR_q_H3(n) GLUE(d, _LOPART(n))[3] | |
864 | #define _DECOR_q_H4(n) GLUE(d, _HIPART(n))[0] | |
865 | #define _DECOR_q_H5(n) GLUE(d, _HIPART(n))[1] | |
866 | #define _DECOR_q_H6(n) GLUE(d, _HIPART(n))[2] | |
867 | #define _DECOR_q_H7(n) GLUE(d, _HIPART(n))[3] | |
868 | #define _DECOR_q_B0(n) GLUE(d, _LOPART(n))[0] | |
869 | #define _DECOR_q_B1(n) GLUE(d, _LOPART(n))[1] | |
870 | #define _DECOR_q_B2(n) GLUE(d, _LOPART(n))[2] | |
871 | #define _DECOR_q_B3(n) GLUE(d, _LOPART(n))[3] | |
872 | #define _DECOR_q_B4(n) GLUE(d, _LOPART(n))[4] | |
873 | #define _DECOR_q_B5(n) GLUE(d, _LOPART(n))[5] | |
874 | #define _DECOR_q_B6(n) GLUE(d, _LOPART(n))[6] | |
875 | #define _DECOR_q_B7(n) GLUE(d, _LOPART(n))[7] | |
876 | #define _DECOR_q_B8(n) GLUE(d, _HIPART(n))[0] | |
877 | #define _DECOR_q_B9(n) GLUE(d, _HIPART(n))[1] | |
878 | #define _DECOR_q_B10(n) GLUE(d, _HIPART(n))[2] | |
879 | #define _DECOR_q_B11(n) GLUE(d, _HIPART(n))[3] | |
880 | #define _DECOR_q_B12(n) GLUE(d, _HIPART(n))[4] | |
881 | #define _DECOR_q_B13(n) GLUE(d, _HIPART(n))[5] | |
882 | #define _DECOR_q_B14(n) GLUE(d, _HIPART(n))[6] | |
883 | #define _DECOR_q_B15(n) GLUE(d, _HIPART(n))[7] | |
884 | ||
885 | // Macros for navigating the NEON register hierarchy. | |
886 | #define S0(reg) _REGFORM(reg, S0) | |
887 | #define S1(reg) _REGFORM(reg, S1) | |
888 | #define S2(reg) _REGFORM(reg, S2) | |
889 | #define S3(reg) _REGFORM(reg, S3) | |
890 | #define D(reg) _REGFORM(reg, D) | |
891 | #define D0(reg) _REGFORM(reg, D0) | |
892 | #define D1(reg) _REGFORM(reg, D1) | |
893 | #define Q(reg) _REGFORM(reg, Q) | |
894 | ||
895 | // Macros for indexing quadword registers. | |
896 | #define QB(reg, i) _REGFORM(reg, B##i) | |
897 | #define QH(reg, i) _REGFORM(reg, H##i) | |
898 | #define QW(reg, i) _REGFORM(reg, W##i) | |
899 | ||
900 | // Macros for converting vldm/vstm ranges. | |
901 | #define QQ(qlo, qhi) D0(qlo)-D1(qhi) | |
902 | ||
0923a413 | 903 | // Stack management and unwinding. |
42c44b27 | 904 | .macro setfp fp=r11, offset=0 |
0923a413 MW |
905 | .if \offset == 0 |
906 | mov \fp, sp | |
907 | .setfp \fp, sp | |
908 | .else | |
909 | add \fp, sp, #\offset | |
910 | .setfp \fp, sp, #\offset | |
911 | .endif | |
912 | .macro dropfp; _dropfp \fp, \offset; .endm | |
913 | .L$_frameptr_p = -1 | |
914 | .endm | |
915 | ||
cdc153a5 | 916 | .macro _dropfp fp, offset=0 |
0923a413 MW |
917 | .if \offset == 0 |
918 | mov sp, \fp | |
919 | .else | |
920 | sub sp, \fp, #\offset | |
921 | .endif | |
922 | .purgem dropfp | |
923 | .L$_frameptr_p = 0 | |
924 | .endm | |
925 | ||
926 | .macro stalloc n | |
927 | sub sp, sp, #\n | |
928 | .pad #\n | |
929 | .endm | |
930 | ||
931 | .macro stfree n | |
932 | add sp, sp, #\n | |
933 | .pad #-\n | |
934 | .endm | |
935 | ||
936 | .macro pushreg rr:vararg | |
1f1fd884 | 937 | push {\rr} |
0923a413 MW |
938 | .save {\rr} |
939 | .endm | |
940 | ||
941 | .macro popreg rr:vararg | |
1f1fd884 | 942 | pop {\rr} |
0923a413 MW |
943 | .endm |
944 | ||
945 | .macro pushvfp rr:vararg | |
946 | vstmdb sp!, {\rr} | |
947 | .vsave {\rr} | |
948 | .endm | |
949 | ||
950 | .macro popvfp rr:vararg | |
951 | vldmia sp!, {\rr} | |
952 | .endm | |
953 | ||
954 | .macro endprologue | |
955 | .endm | |
956 | ||
957 | // No need for prologue markers on ARM. | |
958 | #define FUNC_POSTHOOK(_) .L$_prologue_p = -1 | |
959 | ||
61bd904b MW |
960 | #endif |
961 | ||
962 | ///-------------------------------------------------------------------------- | |
e492db88 MW |
963 | /// AArch64-specific hacking. |
964 | ||
965 | #if CPUFAM_ARM64 | |
966 | ||
967 | // Set the function hooks. | |
968 | #define FUNC_PREHOOK(_) .balign 4 | |
969 | #define FUNC_POSTHOOK(_) .cfi_startproc; .L$_prologue_p = -1 | |
970 | #define ENDFUNC_HOOK(_) .cfi_endproc | |
971 | ||
972 | // Call external subroutine at ADDR, possibly via PLT. | |
973 | .macro callext addr | |
974 | bl \addr | |
975 | .endm | |
976 | ||
977 | // Load address of external symbol ADDR into REG. | |
978 | .macro leaext reg, addr | |
979 | #if WANT_PIC | |
980 | adrp \reg, :got:\addr | |
981 | ldr \reg, [\reg, #:got_lo12:\addr] | |
982 | #else | |
983 | adrp \reg, \addr | |
984 | add \reg, \reg, #:lo12:\addr | |
985 | #endif | |
986 | .endm | |
987 | ||
1a031196 MW |
988 | .macro vzero vz=v31 |
989 | // Set VZ (default v31) to zero. | |
990 | dup \vz\().4s, wzr | |
991 | .endm | |
992 | ||
993 | .macro vshl128 vd, vn, nbit, vz=v31 | |
994 | // Set VD to VN shifted left by NBIT. Assume VZ (default v31) is | |
995 | // all-bits-zero. NBIT must be a multiple of 8. | |
996 | .if \nbit&3 != 0 | |
997 | .error "shift quantity must be whole number of bytes" | |
998 | .endif | |
999 | ext \vd\().16b, \vz\().16b, \vn\().16b, #16 - (\nbit >> 3) | |
1000 | .endm | |
1001 | ||
1002 | .macro vshr128 vd, vn, nbit, vz=v31 | |
1003 | // Set VD to VN shifted right by NBIT. Assume VZ (default v31) is | |
1004 | // all-bits-zero. NBIT must be a multiple of 8. | |
1005 | .if \nbit&3 != 0 | |
1006 | .error "shift quantity must be whole number of bytes" | |
1007 | .endif | |
1008 | ext \vd\().16b, \vn\().16b, \vz\().16b, #\nbit >> 3 | |
1009 | .endm | |
1010 | ||
e492db88 | 1011 | // Stack management and unwinding. |
42c44b27 | 1012 | .macro setfp fp=x29, offset=0 |
e492db88 MW |
1013 | // If you're just going through the motions with a fixed-size stack frame, |
1014 | // then you want to say `add x29, sp, #OFFSET' directly, which will avoid | |
1015 | // pointlessly restoring sp later. | |
1016 | .if \offset == 0 | |
1017 | mov \fp, sp | |
1018 | .cfi_def_cfa_register \fp | |
1019 | .else | |
1020 | add \fp, sp, #\offset | |
1021 | .cfi_def_cfa_register \fp | |
1022 | .cfi_adjust_cfa_offset -\offset | |
1023 | .endif | |
1024 | .macro dropfp; _dropfp \fp, \offset; .endm | |
1025 | .L$_frameptr_p = -1 | |
1026 | .endm | |
1027 | ||
cdc153a5 | 1028 | .macro _dropfp fp, offset=0 |
e492db88 MW |
1029 | .if \offset == 0 |
1030 | mov sp, \fp | |
1031 | .cfi_def_cfa_register sp | |
1032 | .else | |
1033 | sub sp, \fp, #\offset | |
1034 | .cfi_def_cfa_register sp | |
1035 | .cfi_adjust_cfa_offset +\offset | |
1036 | .endif | |
1037 | .purgem dropfp | |
1038 | .L$_frameptr_p = 0 | |
1039 | .endm | |
1040 | ||
1041 | .macro stalloc n | |
1042 | sub sp, sp, #\n | |
1043 | .cfi_adjust_cfa_offset +\n | |
1044 | .endm | |
1045 | ||
1046 | .macro stfree n | |
1047 | add sp, sp, #\n | |
1048 | .cfi_adjust_cfa_offset -\n | |
1049 | .endm | |
1050 | ||
4bf3072e MW |
1051 | .macro pushreg x, y=nil |
1052 | .ifeqs "\y", "nil" | |
e492db88 MW |
1053 | str \x, [sp, #-16]! |
1054 | .cfi_adjust_cfa_offset +16 | |
1055 | .cfi_rel_offset \x, 0 | |
1056 | .else | |
1057 | stp \x, \y, [sp, #-16]! | |
1058 | .cfi_adjust_cfa_offset +16 | |
1059 | .cfi_rel_offset \x, 0 | |
1060 | .cfi_rel_offset \y, 8 | |
1061 | .endif | |
1062 | .endm | |
1063 | ||
4bf3072e MW |
1064 | .macro popreg x, y=nil |
1065 | .ifeqs "\y", "nil" | |
e492db88 MW |
1066 | ldr \x, [sp], #16 |
1067 | .cfi_restore \x | |
1068 | .cfi_adjust_cfa_offset -16 | |
1069 | .else | |
1070 | ldp \x, \y, [sp], #16 | |
1071 | .cfi_restore \x | |
1072 | .cfi_restore \y | |
1073 | .cfi_adjust_cfa_offset -16 | |
1074 | .endif | |
1075 | .endm | |
1076 | ||
4bf3072e MW |
1077 | .macro savereg x, y, z=nil |
1078 | .ifeqs "\z", "nil" | |
1079 | str \x, [sp, \y] | |
e492db88 MW |
1080 | .cfi_rel_offset \x, \y |
1081 | .else | |
1082 | stp \x, \y, [sp, #\z] | |
1083 | .cfi_rel_offset \x, \z | |
1084 | .cfi_rel_offset \y, \z + 8 | |
1085 | .endif | |
1086 | .endm | |
1087 | ||
4bf3072e MW |
1088 | .macro rstrreg x, y, z=nil |
1089 | .ifeqs "\z", "nil" | |
1090 | ldr \x, [sp, \y] | |
e492db88 MW |
1091 | .cfi_restore \x |
1092 | .else | |
1093 | ldp \x, \y, [sp, #\z] | |
1094 | .cfi_restore \x | |
1095 | .cfi_restore \y | |
1096 | .endif | |
1097 | .endm | |
1098 | ||
1099 | .macro endprologue | |
1100 | .endm | |
1101 | ||
1102 | #endif | |
1103 | ||
1104 | ///-------------------------------------------------------------------------- | |
1a0c09c4 MW |
1105 | /// Final stuff. |
1106 | ||
1107 | // Default values for the various hooks. | |
1108 | #ifndef FUNC_PREHOOK | |
1e5664a6 | 1109 | # define FUNC_PREHOOK(_) |
1a0c09c4 MW |
1110 | #endif |
1111 | #ifndef FUNC_POSTHOOK | |
1e5664a6 | 1112 | # define FUNC_POSTHOOK(_) |
1a0c09c4 MW |
1113 | #endif |
1114 | #ifndef ENDFUNC_HOOK | |
1e5664a6 | 1115 | # define ENDFUNC_HOOK(_) |
1a0c09c4 MW |
1116 | #endif |
1117 | ||
1118 | #ifndef F | |
772740dd MW |
1119 | # ifdef SYM_USCORE |
1120 | # define F(name) _##name | |
1121 | # else | |
1122 | # define F(name) name | |
1123 | # endif | |
1a0c09c4 MW |
1124 | #endif |
1125 | ||
1126 | #ifndef TYPE_FUNC | |
1127 | # define TYPE_FUNC(name) | |
1128 | #endif | |
1129 | ||
1130 | #ifndef SIZE_OBJ | |
1131 | # define SIZE_OBJ(name) | |
1132 | #endif | |
1133 | ||
91c8af7d | 1134 | #if __ELF__ && !defined(WANT_EXECUTABLE_STACK) |
1aa5bfa8 MW |
1135 | .pushsection .note.GNU-stack, "", _SECTTY(progbits) |
1136 | .popsection | |
1137 | #endif | |
1138 | ||
1a0c09c4 | 1139 | ///----- That's all, folks -------------------------------------------------- |
8ce88ea5 MW |
1140 | |
1141 | #endif |