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- /* cif.S: PROM entry/exit assembler trampolines.
- *
- * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net>
- */
- #include <asm/pstate.h>
- #include <asm/cpudata.h>
- #include <asm/thread_info.h>
- .text
- .globl prom_cif_direct
- prom_cif_direct:
- sethi %hi(p1275buf), %o1
- or %o1, %lo(p1275buf), %o1
- ldx [%o1 + 0x0010], %o2 ! prom_cif_stack
- save %o2, -192, %sp
- ldx [%i1 + 0x0008], %l2 ! prom_cif_handler
- mov %g4, %l0
- mov %g5, %l1
- mov %g6, %l3
- call %l2
- mov %i0, %o0 ! prom_args
- mov %l0, %g4
- mov %l1, %g5
- mov %l3, %g6
- ret
- restore
- .globl prom_cif_callback
- prom_cif_callback:
- sethi %hi(p1275buf), %o1
- or %o1, %lo(p1275buf), %o1
- save %sp, -192, %sp
- TRAP_LOAD_THREAD_REG(%g6, %g1)
- LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0)
- ldx [%g6 + TI_TASK], %g4
- call prom_world
- mov 0, %o0
- ldx [%i1 + 0x000], %l2
- call %l2
- mov %i0, %o0
- mov %o0, %l1
- call prom_world
- mov 1, %o0
- ret
- restore %l1, 0, %o0
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