cif.S 986 B

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /* cif.S: PROM entry/exit assembler trampolines.
  3. *
  4. * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  5. * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net>
  6. */
  7. #include <asm/pstate.h>
  8. #include <asm/cpudata.h>
  9. #include <asm/thread_info.h>
  10. .text
  11. .globl prom_cif_direct
  12. prom_cif_direct:
  13. save %sp, -192, %sp
  14. sethi %hi(p1275buf), %o1
  15. or %o1, %lo(p1275buf), %o1
  16. ldx [%o1 + 0x0008], %l2 ! prom_cif_handler
  17. mov %g4, %l0
  18. mov %g5, %l1
  19. mov %g6, %l3
  20. call %l2
  21. mov %i0, %o0 ! prom_args
  22. mov %l0, %g4
  23. mov %l1, %g5
  24. mov %l3, %g6
  25. ret
  26. restore
  27. .globl prom_cif_callback
  28. prom_cif_callback:
  29. sethi %hi(p1275buf), %o1
  30. or %o1, %lo(p1275buf), %o1
  31. save %sp, -192, %sp
  32. TRAP_LOAD_THREAD_REG(%g6, %g1)
  33. LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0)
  34. ldx [%g6 + TI_TASK], %g4
  35. call prom_world
  36. mov 0, %o0
  37. ldx [%i1 + 0x000], %l2
  38. call %l2
  39. mov %i0, %o0
  40. mov %o0, %l1
  41. call prom_world
  42. mov 1, %o0
  43. ret
  44. restore %l1, 0, %o0