| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* cif.S: PROM entry/exit assembler trampolines. |
| 2 | * |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 3 | * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 4 | * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | */ |
| 6 | |
| 7 | #include <asm/pstate.h> |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 8 | #include <asm/cpudata.h> |
| 9 | #include <asm/thread_info.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
| 11 | .text |
| 12 | .globl prom_cif_interface |
| 13 | prom_cif_interface: |
| 14 | sethi %hi(p1275buf), %o0 |
| 15 | or %o0, %lo(p1275buf), %o0 |
| 16 | ldx [%o0 + 0x010], %o1 ! prom_cif_stack |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 17 | save %o1, -192, %sp |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | ldx [%i0 + 0x008], %l2 ! prom_cif_handler |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 19 | mov %g4, %l0 |
| 20 | mov %g5, %l1 |
| 21 | mov %g6, %l3 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | call %l2 |
| 23 | add %i0, 0x018, %o0 ! prom_args |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 24 | mov %l0, %g4 |
| 25 | mov %l1, %g5 |
| 26 | mov %l3, %g6 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 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 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | call prom_world |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 39 | mov 0, %o0 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | ldx [%i1 + 0x000], %l2 |
| 41 | call %l2 |
| 42 | mov %i0, %o0 |
| 43 | mov %o0, %l1 |
| 44 | call prom_world |
| David S. Miller | 45fec05 | 2006-02-05 22:27:28 -0800 | [diff] [blame^] | 45 | mov 1, %o0 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | ret |
| 47 | restore %l1, 0, %o0 |
| 48 | |