diff options
Diffstat (limited to 'arch/sparc/prom/cif.S')
| -rw-r--r-- | arch/sparc/prom/cif.S | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/sparc/prom/cif.S b/arch/sparc/prom/cif.S new file mode 100644 index 000000000..dd06bb1fb --- /dev/null +++ b/arch/sparc/prom/cif.S @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* 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: + save %sp, -192, %sp + sethi %hi(p1275buf), %o1 + or %o1, %lo(p1275buf), %o1 + ldx [%o1 + 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 + |