Inicio Explorar Ayuda
Iniciar sesión
Rydia
/
linux-phytium
Seguir 1
Destacar 0
Fork 0
Archivos Incidencias 0 Pull Requests 0 Wiki
Rama: master
Ramas Etiquetas
linux-phytium
/
arch
/
sparc
/
lib
/
NG4patch.S

NG4patch.S 1.6 KB
Permalink Histórico Raw

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465 
  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. /* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant.
    3. 

  3.  *
    4. 

  4.  * Copyright (C) 2012 David S. Miller <davem@davemloft.net>
    5. 

  5.  */
    6. 

  6. 

  7. #include <linux/linkage.h>
    8. 

  8. 

  9. #define BRANCH_ALWAYS	0x10680000
    10. 

  10. #define NOP		0x01000000
    11. 

  11. #define NG_DO_PATCH(OLD, NEW)	\
    12. 

  12. 	sethi	%hi(NEW), %g1; \
    13. 

  13. 	or	%g1, %lo(NEW), %g1; \
    14. 

  14. 	sethi	%hi(OLD), %g2; \
    15. 

  15. 	or	%g2, %lo(OLD), %g2; \
    16. 

  16. 	sub	%g1, %g2, %g1; \
    17. 

  17. 	sethi	%hi(BRANCH_ALWAYS), %g3; \
    18. 

  18. 	sll	%g1, 11, %g1; \
    19. 

  19. 	srl	%g1, 11 + 2, %g1; \
    20. 

  20. 	or	%g3, %lo(BRANCH_ALWAYS), %g3; \
    21. 

  21. 	or	%g3, %g1, %g3; \
    22. 

  22. 	stw	%g3, [%g2]; \
    23. 

  23. 	sethi	%hi(NOP), %g3; \
    24. 

  24. 	or	%g3, %lo(NOP), %g3; \
    25. 

  25. 	stw	%g3, [%g2 + 0x4]; \
    26. 

  26. 	flush	%g2;
    27. 

  27. 

  28. 	.globl	niagara4_patch_copyops
    29. 

  29. 	.type	niagara4_patch_copyops,#function
    30. 

  30. niagara4_patch_copyops:
    31. 

  31. 	NG_DO_PATCH(memcpy, NG4memcpy)
    32. 

  32. 	NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user)
    33. 

  33. 	NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user)
    34. 

  34. 	retl
    35. 

  35. 	 nop
    36. 

  36. 	.size	niagara4_patch_copyops,.-niagara4_patch_copyops
    37. 

  37. 

  38. 	.globl	niagara4_patch_bzero
    39. 

  39. 	.type	niagara4_patch_bzero,#function
    40. 

  40. niagara4_patch_bzero:
    41. 

  41. 	NG_DO_PATCH(memset, NG4memset)
    42. 

  42. 	NG_DO_PATCH(__bzero, NG4bzero)
    43. 

  43. 	NG_DO_PATCH(__clear_user, NGclear_user)
    44. 

  44. 	NG_DO_PATCH(tsb_init, NGtsb_init)
    45. 

  45. 	retl
    46. 

  46. 	 nop
    47. 

  47. 	.size	niagara4_patch_bzero,.-niagara4_patch_bzero
    48. 

  48. 

  49. 	.globl	niagara4_patch_pageops
    50. 

  50. 	.type	niagara4_patch_pageops,#function
    51. 

  51. niagara4_patch_pageops:
    52. 

  52. 	NG_DO_PATCH(copy_user_page, NG4copy_user_page)
    53. 

  53. 	NG_DO_PATCH(_clear_page, NG4clear_page)
    54. 

  54. 	NG_DO_PATCH(clear_user_page, NG4clear_user_page)
    55. 

  55. 	retl
    56. 

  56. 	 nop
    57. 

  57. 	.size	niagara4_patch_pageops,.-niagara4_patch_pageops
    58. 

  58. 

  59. ENTRY(niagara4_patch_fls)
    60. 

  60. 	NG_DO_PATCH(fls, NG4fls)
    61. 

  61. 	NG_DO_PATCH(__fls, __NG4fls)
    62. 

  62. 	retl
    63. 

  63. 	 nop
    64. 

  64. ENDPROC(niagara4_patch_fls)
    65. 

  65.