| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* cif.S: PROM entry/exit assembler trampolines. |
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| 3 | * |
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| 4 | * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
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| 5 | * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> |
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| 6 | */ |
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| 7 | |
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| 8 | #include <asm/pstate.h> |
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| 9 | #include <asm/cpudata.h> |
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| 10 | #include <asm/thread_info.h> |
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| 11 | |
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| 12 | .text |
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| 13 | .globl prom_cif_direct |
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| 14 | prom_cif_direct: |
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| 15 | save %sp, -192, %sp |
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| 16 | sethi %hi(p1275buf), %o1 |
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| 17 | or %o1, %lo(p1275buf), %o1 |
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| 18 | ldx [%o1 + 0x0008], %l2 ! prom_cif_handler |
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| 19 | mov %g4, %l0 |
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| 20 | mov %g5, %l1 |
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| 21 | mov %g6, %l3 |
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| 22 | call %l2 |
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| 23 | mov %i0, %o0 ! prom_args |
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| 24 | mov %l0, %g4 |
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| 25 | mov %l1, %g5 |
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| 26 | mov %l3, %g6 |
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| 27 | ret |
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| 28 | restore |
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| 29 | |
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| 30 | .globl prom_cif_callback |
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| 31 | prom_cif_callback: |
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| 32 | sethi %hi(p1275buf), %o1 |
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| 33 | or %o1, %lo(p1275buf), %o1 |
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| 34 | save %sp, -192, %sp |
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| 35 | TRAP_LOAD_THREAD_REG(%g6, %g1) |
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| 36 | LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) |
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| 37 | ldx [%g6 + TI_TASK], %g4 |
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| 38 | call prom_world |
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| 39 | mov 0, %o0 |
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| 40 | ldx [%i1 + 0x000], %l2 |
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| 41 | call %l2 |
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| 42 | mov %i0, %o0 |
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| 43 | mov %o0, %l1 |
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| 44 | call prom_world |
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| 45 | mov 1, %o0 |
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| 46 | ret |
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| 47 | restore %l1, 0, %o0 |
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| 48 | |
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| 49 | |
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