u-boot/include/asm-i386/interrupt.h

/*
 * (C) Copyright 2009
 * Graeme Russ, graeme.russ@gmail.com
 *
 * (C) Copyright 2002
 * Daniel Engstr<EFBFBD>m, Omicron Ceti AB, daniel@omicron.se
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef __ASM_INTERRUPT_H_
#define __ASM_INTERRUPT_H_ 1

/* cpu/i386/interrupts.c */
void set_vector(u8 intnum, void *routine);

/* lib_i386/interupts.c */
void disable_irq(int irq);
void enable_irq(int irq);

/* Architecture specific functions */
void mask_irq(int irq);
void unmask_irq(int irq);
void specific_eoi(int irq);

extern char exception_stack[];

#define __isr__ void __attribute__ ((regparm(0)))

#define DECLARE_INTERRUPT(x) \
	asm(".globl irq_"#x"\n" \
		    "irq_"#x":\n" \
		    "pusha \n" \
		    "pushl $"#x"\n" \
		    "pushl $irq_return\n" \
		    "jmp   do_irq\n"); \
	__isr__ irq_##x(void)

#define DECLARE_EXCEPTION(x, f) \
	asm(".globl exp_"#x"\n" \
		    "exp_"#x":\n" \
		    "pusha \n" \
		    "movl     %esp, %ebx\n" \
		    "movl     $exception_stack, %eax\n" \
		    "movl     %eax, %esp \n" \
		    "pushl    %ebx\n" \
		    "movl     32(%esp), %ebx\n" \
		    "xorl     %edx, %edx\n" \
		    "movw     36(%esp), %dx\n" \
		    "pushl    %edx\n" \
		    "pushl    %ebx\n" \
		    "pushl    $"#x"\n" \
		    "pushl    $exp_return\n" \
		    "jmp      "#f"\n"); \
	__isr__ exp_##x(void)

#endif