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48 lines
986 B
48 lines
986 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* cif.S: PROM entry/exit assembler trampolines. |
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* |
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* Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
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* Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> |
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*/ |
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#include <asm/pstate.h> |
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#include <asm/cpudata.h> |
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#include <asm/thread_info.h> |
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.text |
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.globl prom_cif_direct |
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prom_cif_direct: |
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save %sp, -192, %sp |
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sethi %hi(p1275buf), %o1 |
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or %o1, %lo(p1275buf), %o1 |
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ldx [%o1 + 0x0008], %l2 ! prom_cif_handler |
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mov %g4, %l0 |
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mov %g5, %l1 |
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mov %g6, %l3 |
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call %l2 |
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mov %i0, %o0 ! prom_args |
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mov %l0, %g4 |
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mov %l1, %g5 |
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mov %l3, %g6 |
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ret |
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restore |
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.globl prom_cif_callback |
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prom_cif_callback: |
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sethi %hi(p1275buf), %o1 |
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or %o1, %lo(p1275buf), %o1 |
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save %sp, -192, %sp |
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TRAP_LOAD_THREAD_REG(%g6, %g1) |
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LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) |
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ldx [%g6 + TI_TASK], %g4 |
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call prom_world |
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mov 0, %o0 |
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ldx [%i1 + 0x000], %l2 |
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call %l2 |
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mov %i0, %o0 |
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mov %o0, %l1 |
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call prom_world |
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mov 1, %o0 |
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ret |
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restore %l1, 0, %o0 |
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