diff options
Diffstat (limited to 'arch/arm/kernel/entry-common.S')
| -rw-r--r-- | arch/arm/kernel/entry-common.S | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 060d7e2e9f64..3aa14dcc5bab 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S | |||
| @@ -77,6 +77,7 @@ no_work_pending: | |||
| 77 | mov r0, r0 | 77 | mov r0, r0 |
| 78 | add sp, sp, #S_FRAME_SIZE - S_PC | 78 | add sp, sp, #S_FRAME_SIZE - S_PC |
| 79 | movs pc, lr @ return & move spsr_svc into cpsr | 79 | movs pc, lr @ return & move spsr_svc into cpsr |
| 80 | ENDPROC(ret_to_user) | ||
| 80 | 81 | ||
| 81 | /* | 82 | /* |
| 82 | * This is how we return from a fork. | 83 | * This is how we return from a fork. |
| @@ -92,7 +93,7 @@ ENTRY(ret_from_fork) | |||
| 92 | mov r0, #1 @ trace exit [IP = 1] | 93 | mov r0, #1 @ trace exit [IP = 1] |
| 93 | bl syscall_trace | 94 | bl syscall_trace |
| 94 | b ret_slow_syscall | 95 | b ret_slow_syscall |
| 95 | 96 | ENDPROC(ret_from_fork) | |
| 96 | 97 | ||
| 97 | .equ NR_syscalls,0 | 98 | .equ NR_syscalls,0 |
| 98 | #define CALL(x) .equ NR_syscalls,NR_syscalls+1 | 99 | #define CALL(x) .equ NR_syscalls,NR_syscalls+1 |
| @@ -269,6 +270,7 @@ ENTRY(vector_swi) | |||
| 269 | eor r0, scno, #__NR_SYSCALL_BASE @ put OS number back | 270 | eor r0, scno, #__NR_SYSCALL_BASE @ put OS number back |
| 270 | bcs arm_syscall | 271 | bcs arm_syscall |
| 271 | b sys_ni_syscall @ not private func | 272 | b sys_ni_syscall @ not private func |
| 273 | ENDPROC(vector_swi) | ||
| 272 | 274 | ||
| 273 | /* | 275 | /* |
| 274 | * This is the really slow path. We're going to be doing | 276 | * This is the really slow path. We're going to be doing |
| @@ -326,7 +328,6 @@ ENTRY(sys_call_table) | |||
| 326 | */ | 328 | */ |
| 327 | @ r0 = syscall number | 329 | @ r0 = syscall number |
| 328 | @ r8 = syscall table | 330 | @ r8 = syscall table |
| 329 | .type sys_syscall, #function | ||
| 330 | sys_syscall: | 331 | sys_syscall: |
| 331 | bic scno, r0, #__NR_OABI_SYSCALL_BASE | 332 | bic scno, r0, #__NR_OABI_SYSCALL_BASE |
| 332 | cmp scno, #__NR_syscall - __NR_SYSCALL_BASE | 333 | cmp scno, #__NR_syscall - __NR_SYSCALL_BASE |
| @@ -338,53 +339,65 @@ sys_syscall: | |||
| 338 | movlo r3, r4 | 339 | movlo r3, r4 |
| 339 | ldrlo pc, [tbl, scno, lsl #2] | 340 | ldrlo pc, [tbl, scno, lsl #2] |
| 340 | b sys_ni_syscall | 341 | b sys_ni_syscall |
| 342 | ENDPROC(sys_syscall) | ||
| 341 | 343 | ||
| 342 | sys_fork_wrapper: | 344 | sys_fork_wrapper: |
| 343 | add r0, sp, #S_OFF | 345 | add r0, sp, #S_OFF |
| 344 | b sys_fork | 346 | b sys_fork |
| 347 | ENDPROC(sys_fork_wrapper) | ||
| 345 | 348 | ||
| 346 | sys_vfork_wrapper: | 349 | sys_vfork_wrapper: |
| 347 | add r0, sp, #S_OFF | 350 | add r0, sp, #S_OFF |
| 348 | b sys_vfork | 351 | b sys_vfork |
| 352 | ENDPROC(sys_vfork_wrapper) | ||
| 349 | 353 | ||
| 350 | sys_execve_wrapper: | 354 | sys_execve_wrapper: |
| 351 | add r3, sp, #S_OFF | 355 | add r3, sp, #S_OFF |
| 352 | b sys_execve | 356 | b sys_execve |
| 357 | ENDPROC(sys_execve_wrapper) | ||
| 353 | 358 | ||
| 354 | sys_clone_wrapper: | 359 | sys_clone_wrapper: |
| 355 | add ip, sp, #S_OFF | 360 | add ip, sp, #S_OFF |
| 356 | str ip, [sp, #4] | 361 | str ip, [sp, #4] |
| 357 | b sys_clone | 362 | b sys_clone |
| 363 | ENDPROC(sys_clone_wrapper) | ||
| 358 | 364 | ||
| 359 | sys_sigsuspend_wrapper: | 365 | sys_sigsuspend_wrapper: |
| 360 | add r3, sp, #S_OFF | 366 | add r3, sp, #S_OFF |
| 361 | b sys_sigsuspend | 367 | b sys_sigsuspend |
| 368 | ENDPROC(sys_sigsuspend_wrapper) | ||
| 362 | 369 | ||
| 363 | sys_rt_sigsuspend_wrapper: | 370 | sys_rt_sigsuspend_wrapper: |
| 364 | add r2, sp, #S_OFF | 371 | add r2, sp, #S_OFF |
| 365 | b sys_rt_sigsuspend | 372 | b sys_rt_sigsuspend |
| 373 | ENDPROC(sys_rt_sigsuspend_wrapper) | ||
| 366 | 374 | ||
| 367 | sys_sigreturn_wrapper: | 375 | sys_sigreturn_wrapper: |
| 368 | add r0, sp, #S_OFF | 376 | add r0, sp, #S_OFF |
| 369 | b sys_sigreturn | 377 | b sys_sigreturn |
| 378 | ENDPROC(sys_sigreturn_wrapper) | ||
| 370 | 379 | ||
| 371 | sys_rt_sigreturn_wrapper: | 380 | sys_rt_sigreturn_wrapper: |
| 372 | add r0, sp, #S_OFF | 381 | add r0, sp, #S_OFF |
| 373 | b sys_rt_sigreturn | 382 | b sys_rt_sigreturn |
| 383 | ENDPROC(sys_rt_sigreturn_wrapper) | ||
| 374 | 384 | ||
| 375 | sys_sigaltstack_wrapper: | 385 | sys_sigaltstack_wrapper: |
| 376 | ldr r2, [sp, #S_OFF + S_SP] | 386 | ldr r2, [sp, #S_OFF + S_SP] |
| 377 | b do_sigaltstack | 387 | b do_sigaltstack |
| 388 | ENDPROC(sys_sigaltstack_wrapper) | ||
| 378 | 389 | ||
| 379 | sys_statfs64_wrapper: | 390 | sys_statfs64_wrapper: |
| 380 | teq r1, #88 | 391 | teq r1, #88 |
| 381 | moveq r1, #84 | 392 | moveq r1, #84 |
| 382 | b sys_statfs64 | 393 | b sys_statfs64 |
| 394 | ENDPROC(sys_statfs64_wrapper) | ||
| 383 | 395 | ||
| 384 | sys_fstatfs64_wrapper: | 396 | sys_fstatfs64_wrapper: |
| 385 | teq r1, #88 | 397 | teq r1, #88 |
| 386 | moveq r1, #84 | 398 | moveq r1, #84 |
| 387 | b sys_fstatfs64 | 399 | b sys_fstatfs64 |
| 400 | ENDPROC(sys_fstatfs64_wrapper) | ||
| 388 | 401 | ||
| 389 | /* | 402 | /* |
| 390 | * Note: off_4k (r5) is always units of 4K. If we can't do the requested | 403 | * Note: off_4k (r5) is always units of 4K. If we can't do the requested |
| @@ -402,11 +415,14 @@ sys_mmap2: | |||
| 402 | str r5, [sp, #4] | 415 | str r5, [sp, #4] |
| 403 | b do_mmap2 | 416 | b do_mmap2 |
| 404 | #endif | 417 | #endif |
| 418 | ENDPROC(sys_mmap2) | ||
| 405 | 419 | ||
| 406 | ENTRY(pabort_ifar) | 420 | ENTRY(pabort_ifar) |
| 407 | mrc p15, 0, r0, cr6, cr0, 2 | 421 | mrc p15, 0, r0, cr6, cr0, 2 |
| 408 | ENTRY(pabort_noifar) | 422 | ENTRY(pabort_noifar) |
| 409 | mov pc, lr | 423 | mov pc, lr |
| 424 | ENDPROC(pabort_ifar) | ||
| 425 | ENDPROC(pabort_noifar) | ||
| 410 | 426 | ||
| 411 | #ifdef CONFIG_OABI_COMPAT | 427 | #ifdef CONFIG_OABI_COMPAT |
| 412 | 428 | ||
| @@ -417,26 +433,31 @@ ENTRY(pabort_noifar) | |||
| 417 | sys_oabi_pread64: | 433 | sys_oabi_pread64: |
| 418 | stmia sp, {r3, r4} | 434 | stmia sp, {r3, r4} |
| 419 | b sys_pread64 | 435 | b sys_pread64 |
| 436 | ENDPROC(sys_oabi_pread64) | ||
| 420 | 437 | ||
| 421 | sys_oabi_pwrite64: | 438 | sys_oabi_pwrite64: |
| 422 | stmia sp, {r3, r4} | 439 | stmia sp, {r3, r4} |
| 423 | b sys_pwrite64 | 440 | b sys_pwrite64 |
| 441 | ENDPROC(sys_oabi_pwrite64) | ||
| 424 | 442 | ||
| 425 | sys_oabi_truncate64: | 443 | sys_oabi_truncate64: |
| 426 | mov r3, r2 | 444 | mov r3, r2 |
| 427 | mov r2, r1 | 445 | mov r2, r1 |
| 428 | b sys_truncate64 | 446 | b sys_truncate64 |
| 447 | ENDPROC(sys_oabi_truncate64) | ||
| 429 | 448 | ||
| 430 | sys_oabi_ftruncate64: | 449 | sys_oabi_ftruncate64: |
| 431 | mov r3, r2 | 450 | mov r3, r2 |
| 432 | mov r2, r1 | 451 | mov r2, r1 |
| 433 | b sys_ftruncate64 | 452 | b sys_ftruncate64 |
| 453 | ENDPROC(sys_oabi_ftruncate64) | ||
| 434 | 454 | ||
| 435 | sys_oabi_readahead: | 455 | sys_oabi_readahead: |
| 436 | str r3, [sp] | 456 | str r3, [sp] |
| 437 | mov r3, r2 | 457 | mov r3, r2 |
| 438 | mov r2, r1 | 458 | mov r2, r1 |
| 439 | b sys_readahead | 459 | b sys_readahead |
| 460 | ENDPROC(sys_oabi_readahead) | ||
| 440 | 461 | ||
| 441 | /* | 462 | /* |
| 442 | * Let's declare a second syscall table for old ABI binaries | 463 | * Let's declare a second syscall table for old ABI binaries |
