diff options
Diffstat (limited to 'arch/v850/kernel/intv.S')
| -rw-r--r-- | arch/v850/kernel/intv.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/arch/v850/kernel/intv.S b/arch/v850/kernel/intv.S new file mode 100644 index 0000000..671e4c6 --- /dev/null +++ b/arch/v850/kernel/intv.S @@ -0,0 +1,87 @@ +/* + * arch/v850/kernel/intv.S -- Interrupt vectors + * + * Copyright (C) 2001,02,03 NEC Electronics Corporation + * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#include <asm/clinkage.h> +#include <asm/irq.h> +#include <asm/machdep.h> +#include <asm/entry.h> + +#ifdef CONFIG_V850E_HIGHRES_TIMER +#include <asm/highres_timer.h> +#endif + +/* Jump to an interrupt/trap handler. These handlers (defined in entry.S) + expect the stack-pointer to be saved in ENTRY_SP, so we use sp to do an + indirect jump (which avoids problems when the handler is more than a signed + 22-bit offset away). */ +#define JUMP_TO_HANDLER(name, sp_save_loc) \ + st.w sp, sp_save_loc; \ + mov hilo(name), sp; \ + jmp [sp] + + + /* Reset vector. */ + .section .intv.reset, "ax" + .org 0x0 + mov hilo(C_SYMBOL_NAME(start)), r1; + jmp [r1] + + + /* Generic interrupt vectors. */ + .section .intv.common, "ax" + .balign 0x10 + JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP) // 0x10 - NMI0 + .balign 0x10 + JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP) // 0x20 - NMI1 + .balign 0x10 + JUMP_TO_HANDLER (nmi, NMI_ENTRY_SP) // 0x30 - NMI2 + + .balign 0x10 + JUMP_TO_HANDLER (trap, ENTRY_SP) // 0x40 - TRAP0n + .balign 0x10 + JUMP_TO_HANDLER (trap, ENTRY_SP) // 0x50 - TRAP1n + + .balign 0x10 + JUMP_TO_HANDLER (dbtrap, ENTRY_SP) // 0x60 - Illegal op / DBTRAP insn + + + /* Hardware interrupt vectors. */ + .section .intv.mach, "ax" + .org 0x0 + +#if defined (CONFIG_V850E_HIGHRES_TIMER) && defined (IRQ_INTCMD) + + /* Interrupts before the highres timer interrupt. */ + .rept IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT) + .balign 0x10 + JUMP_TO_HANDLER (irq, ENTRY_SP) + .endr + + /* The highres timer interrupt. */ + .balign 0x10 + JUMP_TO_HANDLER (C_SYMBOL_NAME (highres_timer_slow_tick_irq), ENTRY_SP) + + /* Interrupts after the highres timer interrupt. */ + .rept NUM_CPU_IRQS - IRQ_INTCMD (HIGHRES_TIMER_TIMER_D_UNIT) - 1 + .balign 0x10 + JUMP_TO_HANDLER (irq, ENTRY_SP) + .endr + +#else /* No highres timer */ + + .rept NUM_CPU_IRQS + .balign 0x10 + JUMP_TO_HANDLER (irq, ENTRY_SP) + .endr + +#endif /* Highres timer */ |
