| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * arch/v850/kernel/intv.S -- Interrupt vectors |
| 3 | * |
| 4 | * Copyright (C) 2001,02,03 NEC Electronics Corporation |
| 5 | * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> |
| 6 | * |
| 7 | * This file is subject to the terms and conditions of the GNU General |
| 8 | * Public License. See the file COPYING in the main directory of this |
| 9 | * archive for more details. |
| 10 | * |
| 11 | * Written by Miles Bader <miles@gnu.org> |
| 12 | */ |
| 13 | |
| 14 | #include <asm/clinkage.h> |
| 15 | #include <asm/irq.h> |
| 16 | #include <asm/machdep.h> |
| 17 | #include <asm/entry.h> |
| 18 | |
| 19 | #ifdef CONFIG_V850E_HIGHRES_TIMER |
| 20 | #include <asm/highres_timer.h> |
| 21 | #endif |
| 22 | |
| 23 | /* Jump to an interrupt/trap handler. These handlers (defined in entry.S) |
| 24 | expect the stack-pointer to be saved in ENTRY_SP, so we use sp to do an |
| 25 | indirect jump (which avoids problems when the handler is more than a signed |
| 26 | 22-bit offset away). */ |
| 27 | #define JUMP_TO_HANDLER(name, sp_save_loc) \ |
| 28 | st.w sp, sp_save_loc; \ |
| 29 | mov hilo(name), sp; \ |
| 30 | jmp [sp] |
| 31 | |
| 32 | |
| 33 | /* Reset vector. */ |
| 34 | .section .intv.reset, "ax" |
| 35 | .org 0x0 |
| 36 | mov hilo(C_SYMBOL_NAME(start)), r1; |
| 37 | jmp [r1] |
| 38 | |
| 39 | |
| 40 | /* Generic interrupt vectors. */ |
| 41 | .section .intv.common, "ax" |
| 42 | .balign 0x10 |
| 43 | JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP) // 0x10 - NMI0 |
| 44 | .balign 0x10 |
| 45 | JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP) // 0x20 - NMI1 |
| 46 | .balign 0x10 |
| 47 | JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP) // 0x30 - NMI2 |
| 48 | |
| 49 | .balign 0x10 |
| 50 | JUMP_TO_HANDLER (trap, ENTRY_SP) // 0x40 - TRAP0n |
| 51 | .balign 0x10 |
| 52 | JUMP_TO_HANDLER (trap, ENTRY_SP) // 0x50 - TRAP1n |
| 53 | |
| 54 | .balign 0x10 |
| 55 | JUMP_TO_HANDLER (dbtrap, ENTRY_SP) // 0x60 - Illegal op / DBTRAP insn |
| 56 | |
| 57 | |
| 58 | /* Hardware interrupt vectors. */ |
| 59 | .section .intv.mach, "ax" |
| 60 | .org 0x0 |
| 61 | |
| 62 | #if defined (CONFIG_V850E_HIGHRES_TIMER) && defined (IRQ_INTCMD) |
| 63 | |
| 64 | /* Interrupts before the highres timer interrupt. */ |
| 65 | .rept IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT) |
| 66 | .balign 0x10 |
| 67 | JUMP_TO_HANDLER (irq, ENTRY_SP) |
| 68 | .endr |
| 69 | |
| 70 | /* The highres timer interrupt. */ |
| 71 | .balign 0x10 |
| 72 | JUMP_TO_HANDLER (C_SYMBOL_NAME (highres_timer_slow_tick_irq), ENTRY_SP) |
| 73 | |
| 74 | /* Interrupts after the highres timer interrupt. */ |
| 75 | .rept NUM_CPU_IRQS - IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT) - 1 |
| 76 | .balign 0x10 |
| 77 | JUMP_TO_HANDLER (irq, ENTRY_SP) |
| 78 | .endr |
| 79 | |
| 80 | #else /* No highres timer */ |
| 81 | |
| 82 | .rept NUM_CPU_IRQS |
| 83 | .balign 0x10 |
| 84 | JUMP_TO_HANDLER (irq, ENTRY_SP) |
| 85 | .endr |
| 86 | |
| 87 | #endif /* Highres timer */ |