Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1 | /* ----------------------------------------------------------------------- |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 2 | aix_closure.S - Copyright (c) 2002, 2003, 2009 Free Software Foundation, Inc. |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3 | based on darwin_closure.S |
| 4 | |
| 5 | PowerPC Assembly glue. |
| 6 | |
| 7 | Permission is hereby granted, free of charge, to any person obtaining |
| 8 | a copy of this software and associated documentation files (the |
| 9 | ``Software''), to deal in the Software without restriction, including |
| 10 | without limitation the rights to use, copy, modify, merge, publish, |
| 11 | distribute, sublicense, and/or sell copies of the Software, and to |
| 12 | permit persons to whom the Software is furnished to do so, subject to |
| 13 | the following conditions: |
| 14 | |
| 15 | The above copyright notice and this permission notice shall be included |
| 16 | in all copies or substantial portions of the Software. |
| 17 | |
| 18 | THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 19 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 21 | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 22 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 23 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 24 | OTHER DEALINGS IN THE SOFTWARE. |
| 25 | ----------------------------------------------------------------------- */ |
| 26 | |
| 27 | .set r0,0 |
| 28 | .set r1,1 |
| 29 | .set r2,2 |
| 30 | .set r3,3 |
| 31 | .set r4,4 |
| 32 | .set r5,5 |
| 33 | .set r6,6 |
| 34 | .set r7,7 |
| 35 | .set r8,8 |
| 36 | .set r9,9 |
| 37 | .set r10,10 |
| 38 | .set r11,11 |
| 39 | .set r12,12 |
| 40 | .set r13,13 |
| 41 | .set r14,14 |
| 42 | .set r15,15 |
| 43 | .set r16,16 |
| 44 | .set r17,17 |
| 45 | .set r18,18 |
| 46 | .set r19,19 |
| 47 | .set r20,20 |
| 48 | .set r21,21 |
| 49 | .set r22,22 |
| 50 | .set r23,23 |
| 51 | .set r24,24 |
| 52 | .set r25,25 |
| 53 | .set r26,26 |
| 54 | .set r27,27 |
| 55 | .set r28,28 |
| 56 | .set r29,29 |
| 57 | .set r30,30 |
| 58 | .set r31,31 |
| 59 | .set f0,0 |
| 60 | .set f1,1 |
| 61 | .set f2,2 |
| 62 | .set f3,3 |
| 63 | .set f4,4 |
| 64 | .set f5,5 |
| 65 | .set f6,6 |
| 66 | .set f7,7 |
| 67 | .set f8,8 |
| 68 | .set f9,9 |
| 69 | .set f10,10 |
| 70 | .set f11,11 |
| 71 | .set f12,12 |
| 72 | .set f13,13 |
| 73 | .set f14,14 |
| 74 | .set f15,15 |
| 75 | .set f16,16 |
| 76 | .set f17,17 |
| 77 | .set f18,18 |
| 78 | .set f19,19 |
| 79 | .set f20,20 |
| 80 | .set f21,21 |
| 81 | |
doko@ubuntu.com | 2a91876 | 2012-06-26 17:56:44 +0200 | [diff] [blame] | 82 | .extern .ffi_closure_helper_DARWIN |
| 83 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 84 | #define LIBFFI_ASM |
| 85 | #define JUMPTARGET(name) name |
| 86 | #define L(x) x |
| 87 | .file "aix_closure.S" |
| 88 | .toc |
| 89 | LC..60: |
| 90 | .tc L..60[TC],L..60 |
| 91 | .csect .text[PR] |
| 92 | .align 2 |
| 93 | |
| 94 | .csect .text[PR] |
| 95 | .align 2 |
| 96 | .globl ffi_closure_ASM |
| 97 | .globl .ffi_closure_ASM |
| 98 | .csect ffi_closure_ASM[DS] |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 99 | ffi_closure_ASM: |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 100 | #ifdef __64BIT__ |
| 101 | .llong .ffi_closure_ASM, TOC[tc0], 0 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 102 | .csect .text[PR] |
| 103 | .ffi_closure_ASM: |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 104 | /* we want to build up an area for the parameters passed */ |
| 105 | /* in registers (both floating point and integer) */ |
| 106 | |
| 107 | /* we store gpr 3 to gpr 10 (aligned to 4) |
| 108 | in the parents outgoing area */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 109 | std r3, 48+(0*8)(r1) |
| 110 | std r4, 48+(1*8)(r1) |
| 111 | std r5, 48+(2*8)(r1) |
| 112 | std r6, 48+(3*8)(r1) |
| 113 | mflr r0 |
| 114 | |
| 115 | std r7, 48+(4*8)(r1) |
| 116 | std r8, 48+(5*8)(r1) |
| 117 | std r9, 48+(6*8)(r1) |
| 118 | std r10, 48+(7*8)(r1) |
| 119 | std r0, 16(r1) /* save the return address */ |
| 120 | |
| 121 | |
| 122 | /* 48 Bytes (Linkage Area) */ |
| 123 | /* 64 Bytes (params) */ |
| 124 | /* 16 Bytes (result) */ |
| 125 | /* 104 Bytes (13*8 from FPR) */ |
| 126 | /* 8 Bytes (alignment) */ |
| 127 | /* 240 Bytes */ |
| 128 | |
| 129 | stdu r1, -240(r1) /* skip over caller save area |
| 130 | keep stack aligned to 16 */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 131 | |
| 132 | /* next save fpr 1 to fpr 13 (aligned to 8) */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 133 | stfd f1, 128+(0*8)(r1) |
| 134 | stfd f2, 128+(1*8)(r1) |
| 135 | stfd f3, 128+(2*8)(r1) |
| 136 | stfd f4, 128+(3*8)(r1) |
| 137 | stfd f5, 128+(4*8)(r1) |
| 138 | stfd f6, 128+(5*8)(r1) |
| 139 | stfd f7, 128+(6*8)(r1) |
| 140 | stfd f8, 128+(7*8)(r1) |
| 141 | stfd f9, 128+(8*8)(r1) |
| 142 | stfd f10, 128+(9*8)(r1) |
| 143 | stfd f11, 128+(10*8)(r1) |
| 144 | stfd f12, 128+(11*8)(r1) |
| 145 | stfd f13, 128+(12*8)(r1) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 146 | |
| 147 | /* set up registers for the routine that actually does the work */ |
| 148 | /* get the context pointer from the trampoline */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 149 | mr r3, r11 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 150 | |
| 151 | /* now load up the pointer to the result storage */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 152 | addi r4, r1, 112 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 153 | |
| 154 | /* now load up the pointer to the saved gpr registers */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 155 | addi r5, r1, 288 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 156 | |
| 157 | /* now load up the pointer to the saved fpr registers */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 158 | addi r6, r1, 128 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 159 | |
| 160 | /* make the call */ |
| 161 | bl .ffi_closure_helper_DARWIN |
| 162 | nop |
| 163 | |
| 164 | /* now r3 contains the return type */ |
| 165 | /* so use it to look up in a table */ |
| 166 | /* so we know how to deal with each type */ |
| 167 | |
| 168 | /* look up the proper starting point in table */ |
| 169 | /* by using return type as offset */ |
doko@ubuntu.com | 2a91876 | 2012-06-26 17:56:44 +0200 | [diff] [blame] | 170 | lhz r3, 10(r3) /* load type from return type */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 171 | ld r4, LC..60(2) /* get address of jump table */ |
| 172 | sldi r3, r3, 4 /* now multiply return type by 16 */ |
| 173 | ld r0, 240+16(r1) /* load return address */ |
| 174 | add r3, r3, r4 /* add contents of table to table address */ |
| 175 | mtctr r3 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 176 | bctr /* jump to it */ |
| 177 | |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 178 | /* Each fragment must be exactly 16 bytes long (4 instructions). |
| 179 | Align to 16 byte boundary for cache and dispatch efficiency. */ |
| 180 | .align 4 |
| 181 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 182 | L..60: |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 183 | /* case FFI_TYPE_VOID */ |
| 184 | mtlr r0 |
| 185 | addi r1, r1, 240 |
| 186 | blr |
| 187 | nop |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 188 | |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 189 | /* case FFI_TYPE_INT */ |
| 190 | lwa r3, 112+4(r1) |
| 191 | mtlr r0 |
| 192 | addi r1, r1, 240 |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 193 | blr |
| 194 | |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 195 | /* case FFI_TYPE_FLOAT */ |
| 196 | lfs f1, 112+0(r1) |
| 197 | mtlr r0 |
| 198 | addi r1, r1, 240 |
| 199 | blr |
| 200 | |
| 201 | /* case FFI_TYPE_DOUBLE */ |
| 202 | lfd f1, 112+0(r1) |
| 203 | mtlr r0 |
| 204 | addi r1, r1, 240 |
| 205 | blr |
| 206 | |
| 207 | /* case FFI_TYPE_LONGDOUBLE */ |
| 208 | lfd f1, 112+0(r1) |
| 209 | mtlr r0 |
| 210 | lfd f2, 112+8(r1) |
| 211 | b L..finish |
| 212 | |
| 213 | /* case FFI_TYPE_UINT8 */ |
| 214 | lbz r3, 112+7(r1) |
| 215 | mtlr r0 |
| 216 | addi r1, r1, 240 |
| 217 | blr |
| 218 | |
| 219 | /* case FFI_TYPE_SINT8 */ |
| 220 | lbz r3, 112+7(r1) |
| 221 | mtlr r0 |
| 222 | extsb r3, r3 |
| 223 | b L..finish |
| 224 | |
| 225 | /* case FFI_TYPE_UINT16 */ |
| 226 | lhz r3, 112+6(r1) |
| 227 | mtlr r0 |
| 228 | L..finish: |
| 229 | addi r1, r1, 240 |
| 230 | blr |
| 231 | |
| 232 | /* case FFI_TYPE_SINT16 */ |
| 233 | lha r3, 112+6(r1) |
| 234 | mtlr r0 |
| 235 | addi r1, r1, 240 |
| 236 | blr |
| 237 | |
| 238 | /* case FFI_TYPE_UINT32 */ |
| 239 | lwz r3, 112+4(r1) |
| 240 | mtlr r0 |
| 241 | addi r1, r1, 240 |
| 242 | blr |
| 243 | |
| 244 | /* case FFI_TYPE_SINT32 */ |
| 245 | lwa r3, 112+4(r1) |
| 246 | mtlr r0 |
| 247 | addi r1, r1, 240 |
| 248 | blr |
| 249 | |
| 250 | /* case FFI_TYPE_UINT64 */ |
| 251 | ld r3, 112+0(r1) |
| 252 | mtlr r0 |
| 253 | addi r1, r1, 240 |
| 254 | blr |
| 255 | |
| 256 | /* case FFI_TYPE_SINT64 */ |
| 257 | ld r3, 112+0(r1) |
| 258 | mtlr r0 |
| 259 | addi r1, r1, 240 |
| 260 | blr |
| 261 | |
| 262 | /* case FFI_TYPE_STRUCT */ |
| 263 | mtlr r0 |
| 264 | addi r1, r1, 240 |
| 265 | blr |
| 266 | nop |
| 267 | |
| 268 | /* case FFI_TYPE_POINTER */ |
| 269 | ld r3, 112+0(r1) |
| 270 | mtlr r0 |
| 271 | addi r1, r1, 240 |
| 272 | blr |
| 273 | |
| 274 | #else /* ! __64BIT__ */ |
| 275 | |
| 276 | .long .ffi_closure_ASM, TOC[tc0], 0 |
| 277 | .csect .text[PR] |
| 278 | .ffi_closure_ASM: |
| 279 | /* we want to build up an area for the parameters passed */ |
| 280 | /* in registers (both floating point and integer) */ |
| 281 | |
| 282 | /* we store gpr 3 to gpr 10 (aligned to 4) |
| 283 | in the parents outgoing area */ |
| 284 | stw r3, 24+(0*4)(r1) |
| 285 | stw r4, 24+(1*4)(r1) |
| 286 | stw r5, 24+(2*4)(r1) |
| 287 | stw r6, 24+(3*4)(r1) |
| 288 | mflr r0 |
| 289 | |
| 290 | stw r7, 24+(4*4)(r1) |
| 291 | stw r8, 24+(5*4)(r1) |
| 292 | stw r9, 24+(6*4)(r1) |
| 293 | stw r10, 24+(7*4)(r1) |
| 294 | stw r0, 8(r1) |
| 295 | |
| 296 | /* 24 Bytes (Linkage Area) */ |
| 297 | /* 32 Bytes (params) */ |
| 298 | /* 16 Bytes (result) */ |
| 299 | /* 104 Bytes (13*8 from FPR) */ |
| 300 | /* 176 Bytes */ |
| 301 | |
| 302 | stwu r1, -176(r1) /* skip over caller save area |
| 303 | keep stack aligned to 16 */ |
| 304 | |
| 305 | /* next save fpr 1 to fpr 13 (aligned to 8) */ |
| 306 | stfd f1, 72+(0*8)(r1) |
| 307 | stfd f2, 72+(1*8)(r1) |
| 308 | stfd f3, 72+(2*8)(r1) |
| 309 | stfd f4, 72+(3*8)(r1) |
| 310 | stfd f5, 72+(4*8)(r1) |
| 311 | stfd f6, 72+(5*8)(r1) |
| 312 | stfd f7, 72+(6*8)(r1) |
| 313 | stfd f8, 72+(7*8)(r1) |
| 314 | stfd f9, 72+(8*8)(r1) |
| 315 | stfd f10, 72+(9*8)(r1) |
| 316 | stfd f11, 72+(10*8)(r1) |
| 317 | stfd f12, 72+(11*8)(r1) |
| 318 | stfd f13, 72+(12*8)(r1) |
| 319 | |
| 320 | /* set up registers for the routine that actually does the work */ |
| 321 | /* get the context pointer from the trampoline */ |
| 322 | mr r3, r11 |
| 323 | |
| 324 | /* now load up the pointer to the result storage */ |
| 325 | addi r4, r1, 56 |
| 326 | |
| 327 | /* now load up the pointer to the saved gpr registers */ |
| 328 | addi r5, r1, 200 |
| 329 | |
| 330 | /* now load up the pointer to the saved fpr registers */ |
| 331 | addi r6, r1, 72 |
| 332 | |
| 333 | /* make the call */ |
| 334 | bl .ffi_closure_helper_DARWIN |
| 335 | nop |
| 336 | |
| 337 | /* now r3 contains the return type */ |
| 338 | /* so use it to look up in a table */ |
| 339 | /* so we know how to deal with each type */ |
| 340 | |
| 341 | /* look up the proper starting point in table */ |
| 342 | /* by using return type as offset */ |
doko@ubuntu.com | 2a91876 | 2012-06-26 17:56:44 +0200 | [diff] [blame] | 343 | lhz r3, 6(r3) /* load type from return type */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 344 | lwz r4, LC..60(2) /* get address of jump table */ |
doko@ubuntu.com | 2a91876 | 2012-06-26 17:56:44 +0200 | [diff] [blame] | 345 | slwi r3, r3, 4 /* now multiply return type by 16 */ |
Matthias Klose | a834975 | 2010-03-15 13:25:28 +0000 | [diff] [blame] | 346 | lwz r0, 176+8(r1) /* load return address */ |
| 347 | add r3, r3, r4 /* add contents of table to table address */ |
| 348 | mtctr r3 |
| 349 | bctr /* jump to it */ |
| 350 | |
| 351 | /* Each fragment must be exactly 16 bytes long (4 instructions). |
| 352 | Align to 16 byte boundary for cache and dispatch efficiency. */ |
| 353 | .align 4 |
| 354 | |
| 355 | L..60: |
| 356 | /* case FFI_TYPE_VOID */ |
| 357 | mtlr r0 |
| 358 | addi r1, r1, 176 |
| 359 | blr |
| 360 | nop |
| 361 | |
| 362 | /* case FFI_TYPE_INT */ |
| 363 | lwz r3, 56+0(r1) |
| 364 | mtlr r0 |
| 365 | addi r1, r1, 176 |
| 366 | blr |
| 367 | |
| 368 | /* case FFI_TYPE_FLOAT */ |
| 369 | lfs f1, 56+0(r1) |
| 370 | mtlr r0 |
| 371 | addi r1, r1, 176 |
| 372 | blr |
| 373 | |
| 374 | /* case FFI_TYPE_DOUBLE */ |
| 375 | lfd f1, 56+0(r1) |
| 376 | mtlr r0 |
| 377 | addi r1, r1, 176 |
| 378 | blr |
| 379 | |
| 380 | /* case FFI_TYPE_LONGDOUBLE */ |
| 381 | lfd f1, 56+0(r1) |
| 382 | mtlr r0 |
| 383 | lfd f2, 56+8(r1) |
| 384 | b L..finish |
| 385 | |
| 386 | /* case FFI_TYPE_UINT8 */ |
| 387 | lbz r3, 56+3(r1) |
| 388 | mtlr r0 |
| 389 | addi r1, r1, 176 |
| 390 | blr |
| 391 | |
| 392 | /* case FFI_TYPE_SINT8 */ |
| 393 | lbz r3, 56+3(r1) |
| 394 | mtlr r0 |
| 395 | extsb r3, r3 |
| 396 | b L..finish |
| 397 | |
| 398 | /* case FFI_TYPE_UINT16 */ |
| 399 | lhz r3, 56+2(r1) |
| 400 | mtlr r0 |
| 401 | addi r1, r1, 176 |
| 402 | blr |
| 403 | |
| 404 | /* case FFI_TYPE_SINT16 */ |
| 405 | lha r3, 56+2(r1) |
| 406 | mtlr r0 |
| 407 | addi r1, r1, 176 |
| 408 | blr |
| 409 | |
| 410 | /* case FFI_TYPE_UINT32 */ |
| 411 | lwz r3, 56+0(r1) |
| 412 | mtlr r0 |
| 413 | addi r1, r1, 176 |
| 414 | blr |
| 415 | |
| 416 | /* case FFI_TYPE_SINT32 */ |
| 417 | lwz r3, 56+0(r1) |
| 418 | mtlr r0 |
| 419 | addi r1, r1, 176 |
| 420 | blr |
| 421 | |
| 422 | /* case FFI_TYPE_UINT64 */ |
| 423 | lwz r3, 56+0(r1) |
| 424 | mtlr r0 |
| 425 | lwz r4, 56+4(r1) |
| 426 | b L..finish |
| 427 | |
| 428 | /* case FFI_TYPE_SINT64 */ |
| 429 | lwz r3, 56+0(r1) |
| 430 | mtlr r0 |
| 431 | lwz r4, 56+4(r1) |
| 432 | b L..finish |
| 433 | |
| 434 | /* case FFI_TYPE_STRUCT */ |
| 435 | mtlr r0 |
| 436 | addi r1, r1, 176 |
| 437 | blr |
| 438 | nop |
| 439 | |
| 440 | /* case FFI_TYPE_POINTER */ |
| 441 | lwz r3, 56+0(r1) |
| 442 | mtlr r0 |
| 443 | L..finish: |
| 444 | addi r1, r1, 176 |
| 445 | blr |
| 446 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 447 | /* END(ffi_closure_ASM) */ |