| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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 | |
| 8 | #include <asm/pstate.h> |
| 9 | #include <asm/cpudata.h> |
| 10 | #include <asm/thread_info.h> |
| 11 | |
| 12 | .text |
| 13 | .globl prom_cif_direct |
| 14 | prom_cif_direct: |
| 15 | save %sp, -192, %sp |
| 16 | sethi %hi(p1275buf), %o1 |
| 17 | or %o1, %lo(p1275buf), %o1 |
| 18 | ldx [%o1 + 0x0008], %l2 ! prom_cif_handler |
| 19 | mov %g4, %l0 |
| 20 | mov %g5, %l1 |
| 21 | mov %g6, %l3 |
| 22 | call %l2 |
| 23 | mov %i0, %o0 ! prom_args |
| 24 | mov %l0, %g4 |
| 25 | mov %l1, %g5 |
| 26 | mov %l3, %g6 |
| 27 | ret |
| 28 | restore |
| 29 | |
| 30 | .globl prom_cif_callback |
| 31 | prom_cif_callback: |
| 32 | sethi %hi(p1275buf), %o1 |
| 33 | or %o1, %lo(p1275buf), %o1 |
| 34 | save %sp, -192, %sp |
| 35 | TRAP_LOAD_THREAD_REG(%g6, %g1) |
| 36 | LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) |
| 37 | ldx [%g6 + TI_TASK], %g4 |
| 38 | call prom_world |
| 39 | mov 0, %o0 |
| 40 | ldx [%i1 + 0x000], %l2 |
| 41 | call %l2 |
| 42 | mov %i0, %o0 |
| 43 | mov %o0, %l1 |
| 44 | call prom_world |
| 45 | mov 1, %o0 |
| 46 | ret |
| 47 | restore %l1, 0, %o0 |
| 48 | |