| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 1 | /* |
| 2 | * interrupt.S - trampoline default exceptions/interrupts to C handlers |
| 3 | * |
| Robin Getz | 03642ae | 2009-12-21 17:02:48 -0500 | [diff] [blame] | 4 | * Copyright (c) 2005-2009 Analog Devices Inc. |
| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 5 | * Licensed under the GPL-2 or later. |
| 6 | */ |
| 7 | |
| Mike Frysinger | 9c46e71 | 2009-08-24 20:48:04 -0400 | [diff] [blame] | 8 | #include <config.h> |
| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 9 | #include <asm/blackfin.h> |
| 10 | #include <asm/entry.h> |
| 11 | |
| 12 | .text |
| 13 | |
| 14 | /* default entry point for exceptions */ |
| 15 | ENTRY(_trap) |
| Mike Frysinger | 9c46e71 | 2009-08-24 20:48:04 -0400 | [diff] [blame] | 16 | CONFIG_BFIN_SCRATCH_REG = sp; |
| 17 | sp.l = LO(L1_SRAM_SCRATCH_END - 20); |
| 18 | sp.h = HI(L1_SRAM_SCRATCH_END - 20); |
| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 19 | SAVE_ALL_SYS |
| Robin Getz | 03642ae | 2009-12-21 17:02:48 -0500 | [diff] [blame] | 20 | |
| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 21 | r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ |
| 22 | sp += -12; |
| 23 | call _trap_c; |
| 24 | sp += 12; |
| Robin Getz | 03642ae | 2009-12-21 17:02:48 -0500 | [diff] [blame] | 25 | |
| 26 | #if ANOMALY_05000257 |
| 27 | R7 = LC0; |
| 28 | LC0 = R7; |
| 29 | R7 = LC1; |
| 30 | LC1 = R7; |
| 31 | #endif |
| 32 | |
| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 33 | RESTORE_ALL_SYS |
| Mike Frysinger | 9c46e71 | 2009-08-24 20:48:04 -0400 | [diff] [blame] | 34 | sp = CONFIG_BFIN_SCRATCH_REG; |
| Mike Frysinger | 9171fc8 | 2008-03-30 15:46:13 -0400 | [diff] [blame] | 35 | rtx; |
| 36 | ENDPROC(_trap) |
| 37 | |
| 38 | /* default entry point for interrupts */ |
| 39 | ENTRY(_evt_default) |
| 40 | SAVE_ALL_SYS |
| 41 | r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ |
| 42 | sp += -12; |
| 43 | call _bfin_panic; |
| 44 | sp += 12; |
| 45 | RESTORE_ALL_SYS |
| 46 | rti; |
| 47 | ENDPROC(_evt_default) |