projects / people / arne_f / kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | /* cif.S: PROM entry/exit assembler trampolines. |
| 3 | * | |
| 45fec05f DM |
4 | * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 5 | * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> | |
| 1da177e4 LT |
6 | */ |
| 7 | ||
| 8 | #include <asm/pstate.h> | |
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9 | #include <asm/cpudata.h> |
| 10 | #include <asm/thread_info.h> | |
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11 | |
| 12 | .text | |
| 25edd694 DM |
13 | .globl prom_cif_direct |
| 14 | prom_cif_direct: | |
| ef3e035c | 15 | save %sp, -192, %sp |
| 25edd694 DM |
16 | sethi %hi(p1275buf), %o1 |
| 17 | or %o1, %lo(p1275buf), %o1 | |
| ef3e035c | 18 | ldx [%o1 + 0x0008], %l2 ! prom_cif_handler |
| 45fec05f DM |
19 | mov %g4, %l0 |
| 20 | mov %g5, %l1 | |
| 21 | mov %g6, %l3 | |
| 1da177e4 | 22 | call %l2 |
| 25edd694 | 23 | mov %i0, %o0 ! prom_args |
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24 | mov %l0, %g4 |
| 25 | mov %l1, %g5 | |
| 26 | mov %l3, %g6 | |
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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 | |
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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 | |
| 1da177e4 | 38 | call prom_world |
| 45fec05f | 39 | mov 0, %o0 |
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40 | ldx [%i1 + 0x000], %l2 |
| 41 | call %l2 | |
| 42 | mov %i0, %o0 | |
| 43 | mov %o0, %l1 | |
| 44 | call prom_world | |
| 45fec05f | 45 | mov 1, %o0 |
| 1da177e4 LT |
46 | ret |
| 47 | restore %l1, 0, %o0 | |
| 48 |