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