* [sashal-linux-stable:queue-5.8 72/77] arch/mips/kernel/genex.S:572: Error: invalid operands `mfc0 $5, CP0_DIAGNOSTIC1'
@ 2020-08-28 3:50 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2020-08-28 3:50 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 14785 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.8
head: 8060d75aa27a18a8c7f73f664102dcd4c6e7d5da
commit: 6f2e3343b9588f7be8e1fc681265f7fecf258d30 [72/77] MIPS: handle Loongson-specific GSExc exception
config: mips-allyesconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 6f2e3343b9588f7be8e1fc681265f7fecf258d30
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/mips/kernel/genex.S: Assembler messages:
>> arch/mips/kernel/genex.S:572: Error: invalid operands `mfc0 $5,CP0_DIAGNOSTIC1'
--
arch/mips/kernel/traps.c:438:17: warning: no previous prototype for 'do_be' [-Wmissing-prototypes]
438 | asmlinkage void do_be(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:743:17: warning: no previous prototype for 'do_ov' [-Wmissing-prototypes]
743 | asmlinkage void do_ov(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:867:17: warning: no previous prototype for 'do_fpe' [-Wmissing-prototypes]
867 | asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
| ^~~~~~
arch/mips/kernel/traps.c:1020:17: warning: no previous prototype for 'do_bp' [-Wmissing-prototypes]
1020 | asmlinkage void do_bp(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1112:17: warning: no previous prototype for 'do_tr' [-Wmissing-prototypes]
1112 | asmlinkage void do_tr(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1154:17: warning: no previous prototype for 'do_ri' [-Wmissing-prototypes]
1154 | asmlinkage void do_ri(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1393:17: warning: no previous prototype for 'do_cpu' [-Wmissing-prototypes]
1393 | asmlinkage void do_cpu(struct pt_regs *regs)
| ^~~~~~
arch/mips/kernel/traps.c:1498:17: warning: no previous prototype for 'do_msa_fpe' [-Wmissing-prototypes]
1498 | asmlinkage void do_msa_fpe(struct pt_regs *regs, unsigned int msacsr)
| ^~~~~~~~~~
arch/mips/kernel/traps.c:1518:17: warning: no previous prototype for 'do_msa' [-Wmissing-prototypes]
1518 | asmlinkage void do_msa(struct pt_regs *regs)
| ^~~~~~
arch/mips/kernel/traps.c:1539:17: warning: no previous prototype for 'do_mdmx' [-Wmissing-prototypes]
1539 | asmlinkage void do_mdmx(struct pt_regs *regs)
| ^~~~~~~
arch/mips/kernel/traps.c:1551:17: warning: no previous prototype for 'do_watch' [-Wmissing-prototypes]
1551 | asmlinkage void do_watch(struct pt_regs *regs)
| ^~~~~~~~
arch/mips/kernel/traps.c:1578:17: warning: no previous prototype for 'do_mcheck' [-Wmissing-prototypes]
1578 | asmlinkage void do_mcheck(struct pt_regs *regs)
| ^~~~~~~~~
arch/mips/kernel/traps.c: In function 'do_mcheck':
arch/mips/kernel/traps.c:1581:17: warning: variable 'prev_state' set but not used [-Wunused-but-set-variable]
1581 | enum ctx_state prev_state;
| ^~~~~~~~~~
arch/mips/kernel/traps.c: At top level:
arch/mips/kernel/traps.c:1609:17: warning: no previous prototype for 'do_mt' [-Wmissing-prototypes]
1609 | asmlinkage void do_mt(struct pt_regs *regs)
| ^~~~~
arch/mips/kernel/traps.c:1645:17: warning: no previous prototype for 'do_dsp' [-Wmissing-prototypes]
1645 | asmlinkage void do_dsp(struct pt_regs *regs)
| ^~~~~~
arch/mips/kernel/traps.c:1653:17: warning: no previous prototype for 'do_reserved' [-Wmissing-prototypes]
1653 | asmlinkage void do_reserved(struct pt_regs *regs)
| ^~~~~~~~~~~
arch/mips/kernel/traps.c:1829:17: warning: no previous prototype for 'cache_parity_error' [-Wmissing-prototypes]
1829 | asmlinkage void cache_parity_error(void)
| ^~~~~~~~~~~~~~~~~~
arch/mips/kernel/traps.c:1877:17: warning: no previous prototype for 'do_ftlb' [-Wmissing-prototypes]
1877 | asmlinkage void do_ftlb(void)
| ^~~~~~~
arch/mips/kernel/traps.c:1906:17: warning: no previous prototype for 'do_gsexc' [-Wmissing-prototypes]
1906 | asmlinkage void do_gsexc(struct pt_regs *regs, u32 diag1)
| ^~~~~~~~
arch/mips/kernel/traps.c: In function 'do_gsexc':
>> arch/mips/kernel/traps.c:1908:25: error: 'LOONGSON_DIAG1_EXCCODE' undeclared (first use in this function); did you mean 'LOONGSON_DIAG_UCAC'?
1908 | u32 exccode = (diag1 & LOONGSON_DIAG1_EXCCODE) >>
| ^~~~~~~~~~~~~~~~~~~~~~
| LOONGSON_DIAG_UCAC
arch/mips/kernel/traps.c:1908:25: note: each undeclared identifier is reported only once for each function it appears in
>> arch/mips/kernel/traps.c:1909:4: error: 'LOONGSON_DIAG1_EXCCODE_SHIFT' undeclared (first use in this function)
1909 | LOONGSON_DIAG1_EXCCODE_SHIFT;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/traps.c: At top level:
arch/mips/kernel/traps.c:1941:6: warning: no previous prototype for 'ejtag_exception_handler' [-Wmissing-prototypes]
1941 | void ejtag_exception_handler(struct pt_regs *regs)
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/traps.c:1986:17: warning: no previous prototype for 'nmi_exception_handler' [-Wmissing-prototypes]
1986 | void __noreturn nmi_exception_handler(struct pt_regs *regs)
| ^~~~~~~~~~~~~~~~~~~~~
# https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/commit/?id=6f2e3343b9588f7be8e1fc681265f7fecf258d30
git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
git fetch --no-tags sashal-linux-stable queue-5.8
git checkout 6f2e3343b9588f7be8e1fc681265f7fecf258d30
vim +572 arch/mips/kernel/genex.S
403
404 ejtag_return:
405 back_to_back_c0_hazard
406 MFC0 k0, CP0_DESAVE
407 .set mips32
408 deret
409 .set pop
410 END(ejtag_debug_handler)
411
412 /*
413 * This buffer is reserved for the use of the EJTAG debug
414 * handler.
415 */
416 .data
417 EXPORT(ejtag_debug_buffer)
418 .fill LONGSIZE
419 #ifdef CONFIG_SMP
420 EXPORT(ejtag_debug_buffer_spinlock)
421 .fill LONGSIZE
422 EXPORT(ejtag_debug_buffer_per_cpu)
423 .fill LONGSIZE * NR_CPUS
424 #endif
425 .previous
426
427 __INIT
428
429 /*
430 * NMI debug exception handler for MIPS reference boards.
431 * The NMI debug exception entry point is 0xbfc00000, which
432 * normally is in the boot PROM, so the boot PROM must do a
433 * unconditional jump to this vector.
434 */
435 NESTED(except_vec_nmi, 0, sp)
436 j nmi_handler
437 #ifdef CONFIG_CPU_MICROMIPS
438 nop
439 #endif
440 END(except_vec_nmi)
441
442 __FINIT
443
444 NESTED(nmi_handler, PT_SIZE, sp)
445 .cfi_signal_frame
446 .set push
447 .set noat
448 /*
449 * Clear ERL - restore segment mapping
450 * Clear BEV - required for page fault exception handler to work
451 */
452 mfc0 k0, CP0_STATUS
453 ori k0, k0, ST0_EXL
454 li k1, ~(ST0_BEV | ST0_ERL)
455 and k0, k0, k1
456 mtc0 k0, CP0_STATUS
457 _ehb
458 SAVE_ALL
459 move a0, sp
460 jal nmi_exception_handler
461 /* nmi_exception_handler never returns */
462 .set pop
463 END(nmi_handler)
464
465 .macro __build_clear_none
466 .endm
467
468 .macro __build_clear_sti
469 TRACE_IRQS_ON
470 STI
471 .endm
472
473 .macro __build_clear_cli
474 CLI
475 TRACE_IRQS_OFF
476 .endm
477
478 .macro __build_clear_fpe
479 CLI
480 TRACE_IRQS_OFF
481 .set push
482 /* gas fails to assemble cfc1 for some archs (octeon).*/ \
483 .set mips1
484 SET_HARDFLOAT
485 cfc1 a1, fcr31
486 .set pop
487 .endm
488
489 .macro __build_clear_msa_fpe
490 CLI
491 TRACE_IRQS_OFF
492 _cfcmsa a1, MSA_CSR
493 .endm
494
495 .macro __build_clear_ade
496 MFC0 t0, CP0_BADVADDR
497 PTR_S t0, PT_BVADDR(sp)
498 KMODE
499 .endm
500
501 .macro __build_clear_gsexc
502 .set push
503 /*
504 * We need to specify a selector to access the CP0.Diag1 (GSCause)
505 * register. All GSExc-equipped processors have MIPS32.
506 */
507 .set mips32
508 mfc0 a1, CP0_DIAGNOSTIC1
509 .set pop
510 TRACE_IRQS_ON
511 STI
512 .endm
513
514 .macro __BUILD_silent exception
515 .endm
516
517 /* Gas tries to parse the ASM_PRINT argument as a string containing
518 string escapes and emits bogus warnings if it believes to
519 recognize an unknown escape code. So make the arguments
520 start with an n and gas will believe \n is ok ... */
521 .macro __BUILD_verbose nexception
522 LONG_L a1, PT_EPC(sp)
523 #ifdef CONFIG_32BIT
524 ASM_PRINT("Got \nexception at %08lx\012")
525 #endif
526 #ifdef CONFIG_64BIT
527 ASM_PRINT("Got \nexception at %016lx\012")
528 #endif
529 .endm
530
531 .macro __BUILD_count exception
532 LONG_L t0,exception_count_\exception
533 LONG_ADDIU t0, 1
534 LONG_S t0,exception_count_\exception
535 .comm exception_count\exception, 8, 8
536 .endm
537
538 .macro __BUILD_HANDLER exception handler clear verbose ext
539 .align 5
540 NESTED(handle_\exception, PT_SIZE, sp)
541 .cfi_signal_frame
542 .set noat
543 SAVE_ALL
544 FEXPORT(handle_\exception\ext)
545 __build_clear_\clear
546 .set at
547 __BUILD_\verbose \exception
548 move a0, sp
549 jal do_\handler
550 j ret_from_exception
551 END(handle_\exception)
552 .endm
553
554 .macro BUILD_HANDLER exception handler clear verbose
555 __BUILD_HANDLER \exception \handler \clear \verbose _int
556 .endm
557
558 BUILD_HANDLER adel ade ade silent /* #4 */
559 BUILD_HANDLER ades ade ade silent /* #5 */
560 BUILD_HANDLER ibe be cli silent /* #6 */
561 BUILD_HANDLER dbe be cli silent /* #7 */
562 BUILD_HANDLER bp bp sti silent /* #9 */
563 BUILD_HANDLER ri ri sti silent /* #10 */
564 BUILD_HANDLER cpu cpu sti silent /* #11 */
565 BUILD_HANDLER ov ov sti silent /* #12 */
566 BUILD_HANDLER tr tr sti silent /* #13 */
567 BUILD_HANDLER msa_fpe msa_fpe msa_fpe silent /* #14 */
568 #ifdef CONFIG_MIPS_FP_SUPPORT
569 BUILD_HANDLER fpe fpe fpe silent /* #15 */
570 #endif
571 BUILD_HANDLER ftlb ftlb none silent /* #16 */
> 572 BUILD_HANDLER gsexc gsexc gsexc silent /* #16 */
573 BUILD_HANDLER msa msa sti silent /* #21 */
574 BUILD_HANDLER mdmx mdmx sti silent /* #22 */
575 #ifdef CONFIG_HARDWARE_WATCHPOINTS
576 /*
577 * For watch, interrupts will be enabled after the watch
578 * registers are read.
579 */
580 BUILD_HANDLER watch watch cli silent /* #23 */
581 #else
582 BUILD_HANDLER watch watch sti verbose /* #23 */
583 #endif
584 BUILD_HANDLER mcheck mcheck cli verbose /* #24 */
585 BUILD_HANDLER mt mt sti silent /* #25 */
586 BUILD_HANDLER dsp dsp sti silent /* #26 */
587 BUILD_HANDLER reserved reserved sti verbose /* others */
588
589 .align 5
590 LEAF(handle_ri_rdhwr_tlbp)
591 .set push
592 .set noat
593 .set noreorder
594 /* check if TLB contains a entry for EPC */
595 MFC0 k1, CP0_ENTRYHI
596 andi k1, MIPS_ENTRYHI_ASID | MIPS_ENTRYHI_ASIDX
597 MFC0 k0, CP0_EPC
598 PTR_SRL k0, _PAGE_SHIFT + 1
599 PTR_SLL k0, _PAGE_SHIFT + 1
600 or k1, k0
601 MTC0 k1, CP0_ENTRYHI
602 mtc0_tlbw_hazard
603 tlbp
604 tlb_probe_hazard
605 mfc0 k1, CP0_INDEX
606 .set pop
607 bltz k1, handle_ri /* slow path */
608 /* fall thru */
609 END(handle_ri_rdhwr_tlbp)
610
611 LEAF(handle_ri_rdhwr)
612 .set push
613 .set noat
614 .set noreorder
615 /* MIPS32: 0x7c03e83b: rdhwr v1,$29 */
616 /* microMIPS: 0x007d6b3c: rdhwr v1,$29 */
617 MFC0 k1, CP0_EPC
618 #if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2)
619 and k0, k1, 1
620 beqz k0, 1f
621 xor k1, k0
622 lhu k0, (k1)
623 lhu k1, 2(k1)
624 ins k1, k0, 16, 16
625 lui k0, 0x007d
626 b docheck
627 ori k0, 0x6b3c
628 1:
629 lui k0, 0x7c03
630 lw k1, (k1)
631 ori k0, 0xe83b
632 #else
633 andi k0, k1, 1
634 bnez k0, handle_ri
635 lui k0, 0x7c03
636 lw k1, (k1)
637 ori k0, 0xe83b
638 #endif
639 .set reorder
640 docheck:
641 bne k0, k1, handle_ri /* if not ours */
642
643 isrdhwr:
644 /* The insn is rdhwr. No need to check CAUSE.BD here. */
645 get_saved_sp /* k1 := current_thread_info */
646 .set noreorder
647 MFC0 k0, CP0_EPC
648 #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
649 ori k1, _THREAD_MASK
650 xori k1, _THREAD_MASK
651 LONG_L v1, TI_TP_VALUE(k1)
652 LONG_ADDIU k0, 4
653 jr k0
654 rfe
655 #else
656 #ifndef CONFIG_CPU_DADDI_WORKAROUNDS
657 LONG_ADDIU k0, 4 /* stall on $k0 */
658 #else
659 .set at=v1
660 LONG_ADDIU k0, 4
661 .set noat
662 #endif
663 MTC0 k0, CP0_EPC
664 /* I hope three instructions between MTC0 and ERET are enough... */
665 ori k1, _THREAD_MASK
666 xori k1, _THREAD_MASK
667 LONG_L v1, TI_TP_VALUE(k1)
668 .set push
669 .set arch=r4000
670 eret
671 .set pop
672 #endif
673 .set pop
674 END(handle_ri_rdhwr)
675
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [sashal-linux-stable:queue-5.8 72/77] arch/mips/kernel/genex.S:572: Error: invalid operands `mfc0 $5, CP0_DIAGNOSTIC1'
@ 2020-08-28 4:20 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2020-08-28 4:20 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 17475 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.8
head: 8060d75aa27a18a8c7f73f664102dcd4c6e7d5da
commit: 6f2e3343b9588f7be8e1fc681265f7fecf258d30 [72/77] MIPS: handle Loongson-specific GSExc exception
config: mips-randconfig-r001-20200827 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c10e63677f5d20f18010f8f68c631ddc97546f7d)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
git checkout 6f2e3343b9588f7be8e1fc681265f7fecf258d30
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/mips/kernel/genex.S: Assembler messages:
>> arch/mips/kernel/genex.S:572: Error: invalid operands `mfc0 $5,CP0_DIAGNOSTIC1'
clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)
--
^
static
arch/mips/kernel/traps.c:1020:17: warning: no previous prototype for function 'do_bp' [-Wmissing-prototypes]
asmlinkage void do_bp(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1020:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_bp(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1112:17: warning: no previous prototype for function 'do_tr' [-Wmissing-prototypes]
asmlinkage void do_tr(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1112:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_tr(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1154:17: warning: no previous prototype for function 'do_ri' [-Wmissing-prototypes]
asmlinkage void do_ri(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1154:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_ri(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1393:17: warning: no previous prototype for function 'do_cpu' [-Wmissing-prototypes]
asmlinkage void do_cpu(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1393:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_cpu(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1498:17: warning: no previous prototype for function 'do_msa_fpe' [-Wmissing-prototypes]
asmlinkage void do_msa_fpe(struct pt_regs *regs, unsigned int msacsr)
^
arch/mips/kernel/traps.c:1498:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_msa_fpe(struct pt_regs *regs, unsigned int msacsr)
^
static
arch/mips/kernel/traps.c:1518:17: warning: no previous prototype for function 'do_msa' [-Wmissing-prototypes]
asmlinkage void do_msa(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1518:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_msa(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1539:17: warning: no previous prototype for function 'do_mdmx' [-Wmissing-prototypes]
asmlinkage void do_mdmx(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1539:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_mdmx(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1551:17: warning: no previous prototype for function 'do_watch' [-Wmissing-prototypes]
asmlinkage void do_watch(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1551:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_watch(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1578:17: warning: no previous prototype for function 'do_mcheck' [-Wmissing-prototypes]
asmlinkage void do_mcheck(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1578:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_mcheck(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1609:17: warning: no previous prototype for function 'do_mt' [-Wmissing-prototypes]
asmlinkage void do_mt(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1609:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_mt(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1645:17: warning: no previous prototype for function 'do_dsp' [-Wmissing-prototypes]
asmlinkage void do_dsp(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1645:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_dsp(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1653:17: warning: no previous prototype for function 'do_reserved' [-Wmissing-prototypes]
asmlinkage void do_reserved(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1653:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_reserved(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1829:17: warning: no previous prototype for function 'cache_parity_error' [-Wmissing-prototypes]
asmlinkage void cache_parity_error(void)
^
arch/mips/kernel/traps.c:1829:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void cache_parity_error(void)
^
static
arch/mips/kernel/traps.c:1877:17: warning: no previous prototype for function 'do_ftlb' [-Wmissing-prototypes]
asmlinkage void do_ftlb(void)
^
arch/mips/kernel/traps.c:1877:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_ftlb(void)
^
static
>> arch/mips/kernel/traps.c:1908:25: error: use of undeclared identifier 'LOONGSON_DIAG1_EXCCODE'
u32 exccode = (diag1 & LOONGSON_DIAG1_EXCCODE) >>
^
>> arch/mips/kernel/traps.c:1909:4: error: use of undeclared identifier 'LOONGSON_DIAG1_EXCCODE_SHIFT'
LOONGSON_DIAG1_EXCCODE_SHIFT;
^
arch/mips/kernel/traps.c:1906:17: warning: no previous prototype for function 'do_gsexc' [-Wmissing-prototypes]
asmlinkage void do_gsexc(struct pt_regs *regs, u32 diag1)
^
arch/mips/kernel/traps.c:1906:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void do_gsexc(struct pt_regs *regs, u32 diag1)
^
static
arch/mips/kernel/traps.c:1941:6: warning: no previous prototype for function 'ejtag_exception_handler' [-Wmissing-prototypes]
void ejtag_exception_handler(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1941:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void ejtag_exception_handler(struct pt_regs *regs)
^
static
arch/mips/kernel/traps.c:1986:17: warning: no previous prototype for function 'nmi_exception_handler' [-Wmissing-prototypes]
void __noreturn nmi_exception_handler(struct pt_regs *regs)
^
arch/mips/kernel/traps.c:1986:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __noreturn nmi_exception_handler(struct pt_regs *regs)
^
static
20 warnings and 2 errors generated.
# https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/commit/?id=6f2e3343b9588f7be8e1fc681265f7fecf258d30
git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
git fetch --no-tags sashal-linux-stable queue-5.8
git checkout 6f2e3343b9588f7be8e1fc681265f7fecf258d30
vim +572 arch/mips/kernel/genex.S
403
404 ejtag_return:
405 back_to_back_c0_hazard
406 MFC0 k0, CP0_DESAVE
407 .set mips32
408 deret
409 .set pop
410 END(ejtag_debug_handler)
411
412 /*
413 * This buffer is reserved for the use of the EJTAG debug
414 * handler.
415 */
416 .data
417 EXPORT(ejtag_debug_buffer)
418 .fill LONGSIZE
419 #ifdef CONFIG_SMP
420 EXPORT(ejtag_debug_buffer_spinlock)
421 .fill LONGSIZE
422 EXPORT(ejtag_debug_buffer_per_cpu)
423 .fill LONGSIZE * NR_CPUS
424 #endif
425 .previous
426
427 __INIT
428
429 /*
430 * NMI debug exception handler for MIPS reference boards.
431 * The NMI debug exception entry point is 0xbfc00000, which
432 * normally is in the boot PROM, so the boot PROM must do a
433 * unconditional jump to this vector.
434 */
435 NESTED(except_vec_nmi, 0, sp)
436 j nmi_handler
437 #ifdef CONFIG_CPU_MICROMIPS
438 nop
439 #endif
440 END(except_vec_nmi)
441
442 __FINIT
443
444 NESTED(nmi_handler, PT_SIZE, sp)
445 .cfi_signal_frame
446 .set push
447 .set noat
448 /*
449 * Clear ERL - restore segment mapping
450 * Clear BEV - required for page fault exception handler to work
451 */
452 mfc0 k0, CP0_STATUS
453 ori k0, k0, ST0_EXL
454 li k1, ~(ST0_BEV | ST0_ERL)
455 and k0, k0, k1
456 mtc0 k0, CP0_STATUS
457 _ehb
458 SAVE_ALL
459 move a0, sp
460 jal nmi_exception_handler
461 /* nmi_exception_handler never returns */
462 .set pop
463 END(nmi_handler)
464
465 .macro __build_clear_none
466 .endm
467
468 .macro __build_clear_sti
469 TRACE_IRQS_ON
470 STI
471 .endm
472
473 .macro __build_clear_cli
474 CLI
475 TRACE_IRQS_OFF
476 .endm
477
478 .macro __build_clear_fpe
479 CLI
480 TRACE_IRQS_OFF
481 .set push
482 /* gas fails to assemble cfc1 for some archs (octeon).*/ \
483 .set mips1
484 SET_HARDFLOAT
485 cfc1 a1, fcr31
486 .set pop
487 .endm
488
489 .macro __build_clear_msa_fpe
490 CLI
491 TRACE_IRQS_OFF
492 _cfcmsa a1, MSA_CSR
493 .endm
494
495 .macro __build_clear_ade
496 MFC0 t0, CP0_BADVADDR
497 PTR_S t0, PT_BVADDR(sp)
498 KMODE
499 .endm
500
501 .macro __build_clear_gsexc
502 .set push
503 /*
504 * We need to specify a selector to access the CP0.Diag1 (GSCause)
505 * register. All GSExc-equipped processors have MIPS32.
506 */
507 .set mips32
508 mfc0 a1, CP0_DIAGNOSTIC1
509 .set pop
510 TRACE_IRQS_ON
511 STI
512 .endm
513
514 .macro __BUILD_silent exception
515 .endm
516
517 /* Gas tries to parse the ASM_PRINT argument as a string containing
518 string escapes and emits bogus warnings if it believes to
519 recognize an unknown escape code. So make the arguments
520 start with an n and gas will believe \n is ok ... */
521 .macro __BUILD_verbose nexception
522 LONG_L a1, PT_EPC(sp)
523 #ifdef CONFIG_32BIT
524 ASM_PRINT("Got \nexception at %08lx\012")
525 #endif
526 #ifdef CONFIG_64BIT
527 ASM_PRINT("Got \nexception at %016lx\012")
528 #endif
529 .endm
530
531 .macro __BUILD_count exception
532 LONG_L t0,exception_count_\exception
533 LONG_ADDIU t0, 1
534 LONG_S t0,exception_count_\exception
535 .comm exception_count\exception, 8, 8
536 .endm
537
538 .macro __BUILD_HANDLER exception handler clear verbose ext
539 .align 5
540 NESTED(handle_\exception, PT_SIZE, sp)
541 .cfi_signal_frame
542 .set noat
543 SAVE_ALL
544 FEXPORT(handle_\exception\ext)
545 __build_clear_\clear
546 .set at
547 __BUILD_\verbose \exception
548 move a0, sp
549 jal do_\handler
550 j ret_from_exception
551 END(handle_\exception)
552 .endm
553
554 .macro BUILD_HANDLER exception handler clear verbose
555 __BUILD_HANDLER \exception \handler \clear \verbose _int
556 .endm
557
558 BUILD_HANDLER adel ade ade silent /* #4 */
559 BUILD_HANDLER ades ade ade silent /* #5 */
560 BUILD_HANDLER ibe be cli silent /* #6 */
561 BUILD_HANDLER dbe be cli silent /* #7 */
562 BUILD_HANDLER bp bp sti silent /* #9 */
563 BUILD_HANDLER ri ri sti silent /* #10 */
564 BUILD_HANDLER cpu cpu sti silent /* #11 */
565 BUILD_HANDLER ov ov sti silent /* #12 */
566 BUILD_HANDLER tr tr sti silent /* #13 */
567 BUILD_HANDLER msa_fpe msa_fpe msa_fpe silent /* #14 */
568 #ifdef CONFIG_MIPS_FP_SUPPORT
569 BUILD_HANDLER fpe fpe fpe silent /* #15 */
570 #endif
571 BUILD_HANDLER ftlb ftlb none silent /* #16 */
> 572 BUILD_HANDLER gsexc gsexc gsexc silent /* #16 */
573 BUILD_HANDLER msa msa sti silent /* #21 */
574 BUILD_HANDLER mdmx mdmx sti silent /* #22 */
575 #ifdef CONFIG_HARDWARE_WATCHPOINTS
576 /*
577 * For watch, interrupts will be enabled after the watch
578 * registers are read.
579 */
580 BUILD_HANDLER watch watch cli silent /* #23 */
581 #else
582 BUILD_HANDLER watch watch sti verbose /* #23 */
583 #endif
584 BUILD_HANDLER mcheck mcheck cli verbose /* #24 */
585 BUILD_HANDLER mt mt sti silent /* #25 */
586 BUILD_HANDLER dsp dsp sti silent /* #26 */
587 BUILD_HANDLER reserved reserved sti verbose /* others */
588
589 .align 5
590 LEAF(handle_ri_rdhwr_tlbp)
591 .set push
592 .set noat
593 .set noreorder
594 /* check if TLB contains a entry for EPC */
595 MFC0 k1, CP0_ENTRYHI
596 andi k1, MIPS_ENTRYHI_ASID | MIPS_ENTRYHI_ASIDX
597 MFC0 k0, CP0_EPC
598 PTR_SRL k0, _PAGE_SHIFT + 1
599 PTR_SLL k0, _PAGE_SHIFT + 1
600 or k1, k0
601 MTC0 k1, CP0_ENTRYHI
602 mtc0_tlbw_hazard
603 tlbp
604 tlb_probe_hazard
605 mfc0 k1, CP0_INDEX
606 .set pop
607 bltz k1, handle_ri /* slow path */
608 /* fall thru */
609 END(handle_ri_rdhwr_tlbp)
610
611 LEAF(handle_ri_rdhwr)
612 .set push
613 .set noat
614 .set noreorder
615 /* MIPS32: 0x7c03e83b: rdhwr v1,$29 */
616 /* microMIPS: 0x007d6b3c: rdhwr v1,$29 */
617 MFC0 k1, CP0_EPC
618 #if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2)
619 and k0, k1, 1
620 beqz k0, 1f
621 xor k1, k0
622 lhu k0, (k1)
623 lhu k1, 2(k1)
624 ins k1, k0, 16, 16
625 lui k0, 0x007d
626 b docheck
627 ori k0, 0x6b3c
628 1:
629 lui k0, 0x7c03
630 lw k1, (k1)
631 ori k0, 0xe83b
632 #else
633 andi k0, k1, 1
634 bnez k0, handle_ri
635 lui k0, 0x7c03
636 lw k1, (k1)
637 ori k0, 0xe83b
638 #endif
639 .set reorder
640 docheck:
641 bne k0, k1, handle_ri /* if not ours */
642
643 isrdhwr:
644 /* The insn is rdhwr. No need to check CAUSE.BD here. */
645 get_saved_sp /* k1 := current_thread_info */
646 .set noreorder
647 MFC0 k0, CP0_EPC
648 #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
649 ori k1, _THREAD_MASK
650 xori k1, _THREAD_MASK
651 LONG_L v1, TI_TP_VALUE(k1)
652 LONG_ADDIU k0, 4
653 jr k0
654 rfe
655 #else
656 #ifndef CONFIG_CPU_DADDI_WORKAROUNDS
657 LONG_ADDIU k0, 4 /* stall on $k0 */
658 #else
659 .set at=v1
660 LONG_ADDIU k0, 4
661 .set noat
662 #endif
663 MTC0 k0, CP0_EPC
664 /* I hope three instructions between MTC0 and ERET are enough... */
665 ori k1, _THREAD_MASK
666 xori k1, _THREAD_MASK
667 LONG_L v1, TI_TP_VALUE(k1)
668 .set push
669 .set arch=r4000
670 eret
671 .set pop
672 #endif
673 .set pop
674 END(handle_ri_rdhwr)
675
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2020-08-28 3:50 [sashal-linux-stable:queue-5.8 72/77] arch/mips/kernel/genex.S:572: Error: invalid operands `mfc0 $5, CP0_DIAGNOSTIC1' kernel test robot
2020-08-28 4:20 kernel test robot
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