kc3-lang/libffi/src/mips/n32.S
-
Show log
Commit
-
Hash : 115ab36f
Author :
Date : 2009-12-24T00:22:00
Update missing changes for 3.0.9r4.
-
src/mips/n32.S
-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591
/* ----------------------------------------------------------------------- n32.S - Copyright (c) 1996, 1998, 2005 Red Hat, Inc. MIPS Foreign Function Interface Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ``Software''), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ----------------------------------------------------------------------- */ #define LIBFFI_ASM #include <fficonfig.h> #include <ffi.h> /* Only build this code if we are compiling for n32 */ #if defined(FFI_MIPS_N32) #define callback a0 #define bytes a2 #define flags a3 #define raddr a4 #define fn a5 #define SIZEOF_FRAME ( 8 * FFI_SIZEOF_ARG ) #ifdef linux .abicalls #endif .text .align 2 .globl ffi_call_N32 .ent ffi_call_N32 ffi_call_N32: .LFB3: .frame $fp, SIZEOF_FRAME, ra .mask 0xc0000000,-FFI_SIZEOF_ARG .fmask 0x00000000,0 # Prologue SUBU $sp, SIZEOF_FRAME # Frame size .LCFI0: REG_S $fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Save frame pointer REG_S ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp) # Save return address .LCFI1: move $fp, $sp .LCFI3: move t9, callback # callback function pointer REG_S bytes, 2*FFI_SIZEOF_ARG($fp) # bytes REG_S flags, 3*FFI_SIZEOF_ARG($fp) # flags REG_S raddr, 4*FFI_SIZEOF_ARG($fp) # raddr REG_S fn, 5*FFI_SIZEOF_ARG($fp) # fn # Allocate at least 4 words in the argstack move v0, bytes bge bytes, 4 * FFI_SIZEOF_ARG, bigger LI v0, 4 * FFI_SIZEOF_ARG b sixteen bigger: ADDU t4, v0, 2 * FFI_SIZEOF_ARG -1 # make sure it is aligned and v0, t4, -2 * FFI_SIZEOF_ARG # to a proper boundry. sixteen: SUBU $sp, $sp, v0 # move the stack pointer to reflect the # arg space move a0, $sp # 4 * FFI_SIZEOF_ARG ADDU a3, $fp, 3 * FFI_SIZEOF_ARG # Call ffi_prep_args jal t9 # Copy the stack pointer to t9 move t9, $sp # Fix the stack if there are more than 8 64bit slots worth # of arguments. # Load the number of bytes REG_L t6, 2*FFI_SIZEOF_ARG($fp) # Is it bigger than 8 * FFI_SIZEOF_ARG? daddiu t8, t6, -(8 * FFI_SIZEOF_ARG) bltz t8, loadregs ADDU t9, t9, t8 loadregs: REG_L t6, 3*FFI_SIZEOF_ARG($fp) # load the flags word into t6. and t4, t6, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg1_floatp REG_L a0, 0*FFI_SIZEOF_ARG(t9) b arg1_next arg1_floatp: bne t4, FFI_TYPE_FLOAT, arg1_doublep l.s $f12, 0*FFI_SIZEOF_ARG(t9) b arg1_next arg1_doublep: l.d $f12, 0*FFI_SIZEOF_ARG(t9) arg1_next: SRL t4, t6, 1*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg2_floatp REG_L a1, 1*FFI_SIZEOF_ARG(t9) b arg2_next arg2_floatp: bne t4, FFI_TYPE_FLOAT, arg2_doublep l.s $f13, 1*FFI_SIZEOF_ARG(t9) b arg2_next arg2_doublep: l.d $f13, 1*FFI_SIZEOF_ARG(t9) arg2_next: SRL t4, t6, 2*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg3_floatp REG_L a2, 2*FFI_SIZEOF_ARG(t9) b arg3_next arg3_floatp: bne t4, FFI_TYPE_FLOAT, arg3_doublep l.s $f14, 2*FFI_SIZEOF_ARG(t9) b arg3_next arg3_doublep: l.d $f14, 2*FFI_SIZEOF_ARG(t9) arg3_next: SRL t4, t6, 3*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg4_floatp REG_L a3, 3*FFI_SIZEOF_ARG(t9) b arg4_next arg4_floatp: bne t4, FFI_TYPE_FLOAT, arg4_doublep l.s $f15, 3*FFI_SIZEOF_ARG(t9) b arg4_next arg4_doublep: l.d $f15, 3*FFI_SIZEOF_ARG(t9) arg4_next: SRL t4, t6, 4*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg5_floatp REG_L a4, 4*FFI_SIZEOF_ARG(t9) b arg5_next arg5_floatp: bne t4, FFI_TYPE_FLOAT, arg5_doublep l.s $f16, 4*FFI_SIZEOF_ARG(t9) b arg5_next arg5_doublep: l.d $f16, 4*FFI_SIZEOF_ARG(t9) arg5_next: SRL t4, t6, 5*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg6_floatp REG_L a5, 5*FFI_SIZEOF_ARG(t9) b arg6_next arg6_floatp: bne t4, FFI_TYPE_FLOAT, arg6_doublep l.s $f17, 5*FFI_SIZEOF_ARG(t9) b arg6_next arg6_doublep: l.d $f17, 5*FFI_SIZEOF_ARG(t9) arg6_next: SRL t4, t6, 6*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg7_floatp REG_L a6, 6*FFI_SIZEOF_ARG(t9) b arg7_next arg7_floatp: bne t4, FFI_TYPE_FLOAT, arg7_doublep l.s $f18, 6*FFI_SIZEOF_ARG(t9) b arg7_next arg7_doublep: l.d $f18, 6*FFI_SIZEOF_ARG(t9) arg7_next: SRL t4, t6, 7*FFI_FLAG_BITS and t4, ((1<<FFI_FLAG_BITS)-1) bnez t4, arg8_floatp REG_L a7, 7*FFI_SIZEOF_ARG(t9) b arg8_next arg8_floatp: bne t4, FFI_TYPE_FLOAT, arg8_doublep l.s $f19, 7*FFI_SIZEOF_ARG(t9) b arg8_next arg8_doublep: l.d $f19, 7*FFI_SIZEOF_ARG(t9) arg8_next: callit: # Load the function pointer REG_L t9, 5*FFI_SIZEOF_ARG($fp) # If the return value pointer is NULL, assume no return value. REG_L t5, 4*FFI_SIZEOF_ARG($fp) beqz t5, noretval # Shift the return type flag over SRL t6, 8*FFI_FLAG_BITS beq t6, FFI_TYPE_SINT32, retint bne t6, FFI_TYPE_INT, retfloat retint: jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) REG_S v0, 0(t4) b epilogue retfloat: bne t6, FFI_TYPE_FLOAT, retdouble jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.s $f0, 0(t4) b epilogue retdouble: bne t6, FFI_TYPE_DOUBLE, retstruct_d jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.d $f0, 0(t4) b epilogue retstruct_d: bne t6, FFI_TYPE_STRUCT_D, retstruct_f jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.d $f0, 0(t4) b epilogue retstruct_f: bne t6, FFI_TYPE_STRUCT_F, retstruct_d_d jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.s $f0, 0(t4) b epilogue retstruct_d_d: bne t6, FFI_TYPE_STRUCT_DD, retstruct_f_f jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.d $f0, 0(t4) s.d $f2, 8(t4) b epilogue retstruct_f_f: bne t6, FFI_TYPE_STRUCT_FF, retstruct_d_f jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.s $f0, 0(t4) s.s $f2, 4(t4) b epilogue retstruct_d_f: bne t6, FFI_TYPE_STRUCT_DF, retstruct_f_d jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.d $f0, 0(t4) s.s $f2, 8(t4) b epilogue retstruct_f_d: bne t6, FFI_TYPE_STRUCT_FD, retstruct_d_soft jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) s.s $f0, 0(t4) s.d $f2, 8(t4) b epilogue retstruct_d_soft: bne t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) sd v0, 0(t4) b epilogue retstruct_f_soft: bne t6, FFI_TYPE_STRUCT_F_SOFT, retstruct_d_d_soft jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) sw v0, 0(t4) b epilogue retstruct_d_d_soft: bne t6, FFI_TYPE_STRUCT_DD_SOFT, retstruct_f_f_soft jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) sd v0, 0(t4) sd v1, 8(t4) b epilogue retstruct_f_f_soft: bne t6, FFI_TYPE_STRUCT_FF_SOFT, retstruct_d_f_soft jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) sw v0, 0(t4) sw v1, 4(t4) b epilogue retstruct_d_f_soft: bne t6, FFI_TYPE_STRUCT_DF_SOFT, retstruct_f_d_soft jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) sd v0, 0(t4) sw v1, 8(t4) b epilogue retstruct_f_d_soft: bne t6, FFI_TYPE_STRUCT_FD_SOFT, retstruct_small jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) sw v0, 0(t4) sd v1, 8(t4) b epilogue retstruct_small: bne t6, FFI_TYPE_STRUCT_SMALL, retstruct_small2 jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) REG_S v0, 0(t4) b epilogue retstruct_small2: bne t6, FFI_TYPE_STRUCT_SMALL2, retstruct jal t9 REG_L t4, 4*FFI_SIZEOF_ARG($fp) REG_S v0, 0(t4) REG_S v1, 8(t4) b epilogue retstruct: noretval: jal t9 # Epilogue epilogue: move $sp, $fp REG_L $fp, SIZEOF_FRAME - 2*FFI_SIZEOF_ARG($sp) # Restore frame pointer REG_L ra, SIZEOF_FRAME - 1*FFI_SIZEOF_ARG($sp) # Restore return address ADDU $sp, SIZEOF_FRAME # Fix stack pointer j ra .LFE3: .end ffi_call_N32 /* ffi_closure_N32. Expects address of the passed-in ffi_closure in t0 ($12). Stores any arguments passed in registers onto the stack, then calls ffi_closure_mips_inner_N32, which then decodes them. Stack layout: 20 - Start of parameters, original sp 19 - Called function a7 save 18 - Called function a6 save 17 - Called function a5 save 16 - Called function a4 save 15 - Called function a3 save 14 - Called function a2 save 13 - Called function a1 save 12 - Called function a0 save 11 - Called function f19 10 - Called function f18 9 - Called function f17 8 - Called function f16 7 - Called function f15 6 - Called function f14 5 - Called function f13 4 - Called function f12 3 - return value high (v1 or $f2) 2 - return value low (v0 or $f0) 1 - ra save 0 - gp save our sp points here */ #define SIZEOF_FRAME2 (20 * FFI_SIZEOF_ARG) #define A7_OFF2 (19 * FFI_SIZEOF_ARG) #define A6_OFF2 (18 * FFI_SIZEOF_ARG) #define A5_OFF2 (17 * FFI_SIZEOF_ARG) #define A4_OFF2 (16 * FFI_SIZEOF_ARG) #define A3_OFF2 (15 * FFI_SIZEOF_ARG) #define A2_OFF2 (14 * FFI_SIZEOF_ARG) #define A1_OFF2 (13 * FFI_SIZEOF_ARG) #define A0_OFF2 (12 * FFI_SIZEOF_ARG) #define F19_OFF2 (11 * FFI_SIZEOF_ARG) #define F18_OFF2 (10 * FFI_SIZEOF_ARG) #define F17_OFF2 (9 * FFI_SIZEOF_ARG) #define F16_OFF2 (8 * FFI_SIZEOF_ARG) #define F15_OFF2 (7 * FFI_SIZEOF_ARG) #define F14_OFF2 (6 * FFI_SIZEOF_ARG) #define F13_OFF2 (5 * FFI_SIZEOF_ARG) #define F12_OFF2 (4 * FFI_SIZEOF_ARG) #define V1_OFF2 (3 * FFI_SIZEOF_ARG) #define V0_OFF2 (2 * FFI_SIZEOF_ARG) #define RA_OFF2 (1 * FFI_SIZEOF_ARG) #define GP_OFF2 (0 * FFI_SIZEOF_ARG) .align 2 .globl ffi_closure_N32 .ent ffi_closure_N32 ffi_closure_N32: .LFB2: .frame $sp, SIZEOF_FRAME2, ra .mask 0x90000000,-(SIZEOF_FRAME2 - RA_OFF2) .fmask 0x00000000,0 SUBU $sp, SIZEOF_FRAME2 .LCFI5: .cpsetup t9, GP_OFF2, ffi_closure_N32 REG_S ra, RA_OFF2($sp) # Save return address .LCFI6: # Store all possible argument registers. If there are more than # fit in registers, then they were stored on the stack. REG_S a0, A0_OFF2($sp) REG_S a1, A1_OFF2($sp) REG_S a2, A2_OFF2($sp) REG_S a3, A3_OFF2($sp) REG_S a4, A4_OFF2($sp) REG_S a5, A5_OFF2($sp) REG_S a6, A6_OFF2($sp) REG_S a7, A7_OFF2($sp) # Store all possible float/double registers. s.d $f12, F12_OFF2($sp) s.d $f13, F13_OFF2($sp) s.d $f14, F14_OFF2($sp) s.d $f15, F15_OFF2($sp) s.d $f16, F16_OFF2($sp) s.d $f17, F17_OFF2($sp) s.d $f18, F18_OFF2($sp) s.d $f19, F19_OFF2($sp) # Call ffi_closure_mips_inner_N32 to do the real work. LA t9, ffi_closure_mips_inner_N32 move a0, $12 # Pointer to the ffi_closure ADDU a1, $sp, V0_OFF2 ADDU a2, $sp, A0_OFF2 ADDU a3, $sp, F12_OFF2 jalr t9 # Return flags are in v0 bne v0, FFI_TYPE_SINT32, cls_retint lw v0, V0_OFF2($sp) b cls_epilogue cls_retint: bne v0, FFI_TYPE_INT, cls_retfloat REG_L v0, V0_OFF2($sp) b cls_epilogue cls_retfloat: bne v0, FFI_TYPE_FLOAT, cls_retdouble l.s $f0, V0_OFF2($sp) b cls_epilogue cls_retdouble: bne v0, FFI_TYPE_DOUBLE, cls_retstruct_d l.d $f0, V0_OFF2($sp) b cls_epilogue cls_retstruct_d: bne v0, FFI_TYPE_STRUCT_D, cls_retstruct_f l.d $f0, V0_OFF2($sp) b cls_epilogue cls_retstruct_f: bne v0, FFI_TYPE_STRUCT_F, cls_retstruct_d_d l.s $f0, V0_OFF2($sp) b cls_epilogue cls_retstruct_d_d: bne v0, FFI_TYPE_STRUCT_DD, cls_retstruct_f_f l.d $f0, V0_OFF2($sp) l.d $f2, V1_OFF2($sp) b cls_epilogue cls_retstruct_f_f: bne v0, FFI_TYPE_STRUCT_FF, cls_retstruct_d_f l.s $f0, V0_OFF2($sp) l.s $f2, V1_OFF2($sp) b cls_epilogue cls_retstruct_d_f: bne v0, FFI_TYPE_STRUCT_DF, cls_retstruct_f_d l.d $f0, V0_OFF2($sp) l.s $f2, V1_OFF2($sp) b cls_epilogue cls_retstruct_f_d: bne v0, FFI_TYPE_STRUCT_FD, cls_retstruct_small2 l.s $f0, V0_OFF2($sp) l.d $f2, V1_OFF2($sp) b cls_epilogue cls_retstruct_small2: REG_L v0, V0_OFF2($sp) REG_L v1, V1_OFF2($sp) # Epilogue cls_epilogue: REG_L ra, RA_OFF2($sp) # Restore return address .cpreturn ADDU $sp, SIZEOF_FRAME2 j ra .LFE2: .end ffi_closure_N32 #ifdef linux .section .eh_frame,"aw",@progbits .Lframe1: .4byte .LECIE1-.LSCIE1 # length .LSCIE1: .4byte 0x0 # CIE .byte 0x1 # Version 1 .ascii "\000" # Augmentation .uleb128 0x1 # Code alignment 1 .sleb128 -4 # Data alignment -4 .byte 0x1f # Return Address $31 .byte 0xc # DW_CFA_def_cfa .uleb128 0x1d # in $sp .uleb128 0x0 # offset 0 .align EH_FRAME_ALIGN .LECIE1: .LSFDE1: .4byte .LEFDE1-.LASFDE1 # length. .LASFDE1: .4byte .LASFDE1-.Lframe1 # CIE_pointer. FDE_ADDR_BYTES .LFB3 # initial_location. FDE_ADDR_BYTES .LFE3-.LFB3 # address_range. .byte 0x4 # DW_CFA_advance_loc4 .4byte .LCFI0-.LFB3 # to .LCFI0 .byte 0xe # DW_CFA_def_cfa_offset .uleb128 SIZEOF_FRAME # adjust stack.by SIZEOF_FRAME .byte 0x4 # DW_CFA_advance_loc4 .4byte .LCFI1-.LCFI0 # to .LCFI1 .byte 0x9e # DW_CFA_offset of $fp .uleb128 2*FFI_SIZEOF_ARG/4 # .byte 0x9f # DW_CFA_offset of ra .uleb128 1*FFI_SIZEOF_ARG/4 # .byte 0x4 # DW_CFA_advance_loc4 .4byte .LCFI3-.LCFI1 # to .LCFI3 .byte 0xd # DW_CFA_def_cfa_register .uleb128 0x1e # in $fp .align EH_FRAME_ALIGN .LEFDE1: .LSFDE3: .4byte .LEFDE3-.LASFDE3 # length .LASFDE3: .4byte .LASFDE3-.Lframe1 # CIE_pointer. FDE_ADDR_BYTES .LFB2 # initial_location. FDE_ADDR_BYTES .LFE2-.LFB2 # address_range. .byte 0x4 # DW_CFA_advance_loc4 .4byte .LCFI5-.LFB2 # to .LCFI5 .byte 0xe # DW_CFA_def_cfa_offset .uleb128 SIZEOF_FRAME2 # adjust stack.by SIZEOF_FRAME .byte 0x4 # DW_CFA_advance_loc4 .4byte .LCFI6-.LCFI5 # to .LCFI6 .byte 0x9c # DW_CFA_offset of $gp ($28) .uleb128 (SIZEOF_FRAME2 - GP_OFF2)/4 .byte 0x9f # DW_CFA_offset of ra ($31) .uleb128 (SIZEOF_FRAME2 - RA_OFF2)/4 .align EH_FRAME_ALIGN .LEFDE3: #endif /* linux */ #endif