include/arch/sparc/machine/trap.h - maze/klibc - Git at Google

 /*	$NetBSD: trap.h,v 1.11 1999/01/20 00:15:08 pk Exp $ */

 /*
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
  * This software was developed by the Computer Systems Engineering group
  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  * contributed to Berkeley.
  *
  * All advertising materials mentioning features or use of this software
  * must display the following acknowledgement:
  *	This product includes software developed by the University of
  *	California, Lawrence Berkeley Laboratory.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *	This product includes software developed by the University of
  *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)trap.h	8.1 (Berkeley) 6/11/93
  */
 /*
  * Sun4m support by Aaron Brown, Harvard University.
  * Changes Copyright (c) 1995 The President and Fellows of Harvard College.
  * All rights reserved.
  */

 #ifndef	_MACHINE_TRAP_H
 #define	_MACHINE_TRAP_H

 /*	trap		vec	  (pri) description	*/
 #define	T_RESET		0x00	/* (1) not actually vectored; jumps to 0 */
 #define	T_TEXTFAULT	0x01	/* (2) address fault during instr fetch */
 #define	T_ILLINST	0x02	/* (3) illegal instruction */
 #define	T_PRIVINST	0x03	/* (4) privileged instruction */
 #define	T_FPDISABLED	0x04	/* (5) fp instr while fp disabled */
 #define	T_WINOF		0x05	/* (6) register window overflow */
 #define	T_WINUF		0x06	/* (7) register window underflow */
 #define	T_ALIGN		0x07	/* (8) address not properly aligned */
 #define	T_FPE		0x08	/* (9) floating point exception */
 #define	T_DATAFAULT	0x09	/* (10) address fault during data fetch */
 #define	T_TAGOF		0x0a	/* (11) tag overflow */
 /*			0x0b	   unused */
 /*			0x0c	   unused */
 /*			0x0d	   unused */
 /*			0x0e	   unused */
 /*			0x0f	   unused */
 /*			0x10	   unused */
 #define	T_L1INT		0x11	/* (27) level 1 interrupt */
 #define	T_L2INT		0x12	/* (26) level 2 interrupt */
 #define	T_L3INT		0x13	/* (25) level 3 interrupt */
 #define	T_L4INT		0x14	/* (24) level 4 interrupt */
 #define	T_L5INT		0x15	/* (23) level 5 interrupt */
 #define	T_L6INT		0x16	/* (22) level 6 interrupt */
 #define	T_L7INT		0x17	/* (21) level 7 interrupt */
 #define	T_L8INT		0x18	/* (20) level 8 interrupt */
 #define	T_L9INT		0x19	/* (19) level 9 interrupt */
 #define	T_L10INT	0x1a	/* (18) level 10 interrupt */
 #define	T_L11INT	0x1b	/* (17) level 11 interrupt */
 #define	T_L12INT	0x1c	/* (16) level 12 interrupt */
 #define	T_L13INT	0x1d	/* (15) level 13 interrupt */
 #define	T_L14INT	0x1e	/* (14) level 14 interrupt */
 #define	T_L15INT	0x1f	/* (13) level 15 interrupt */
 /*			0x20	   unused */
 /*	through		0x23	   unused */
 #define	T_CPDISABLED	0x24	/* (5) coprocessor instr while disabled */
 #define	T_UNIMPLFLUSH	0x25	/* Unimplemented FLUSH */
 /*	through		0x27	   unused */
 #define	T_CPEXCEPTION	0x28	/* (9) coprocessor exception */
 /*			0x29	   unused */
 #define T_IDIV0		0x2a	/* divide by zero (from hw [su]div instr) */
 #define T_STOREBUFFAULT	0x2b	/* SuperSPARC: Store buffer copy-back fault */
 /*			0x2c	   unused */
 /*	through		0x7f	   unused */

 /* beginning of `user' vectors (from trap instructions) - all priority 12 */
 #define	T_SUN_SYSCALL	0x80	/* system call */
 #define	T_BREAKPOINT	0x81	/* breakpoint `instruction' */
 #define	T_DIV0		0x82	/* division routine was handed 0 */
 #define	T_FLUSHWIN	0x83	/* flush windows */
 #define	T_CLEANWIN	0x84	/* provide clean windows */
 #define	T_RANGECHECK	0x85	/* ? */
 #define	T_FIXALIGN	0x86	/* fix up unaligned accesses */
 #define	T_INTOF		0x87	/* integer overflow ? */
 #define	T_SVR4_SYSCALL	0x88	/* SVR4 system call */
 #define	T_BSD_SYSCALL	0x89	/* BSD system call */
 #define	T_KGDB_EXEC	0x8a	/* for kernel gdb */

 /* 0x8b..0xff are currently unallocated, except the following */
 #define T_SVR4_GETCC		0xa0
 #define T_SVR4_SETCC		0xa1
 #define T_SVR4_GETPSR		0xa2
 #define T_SVR4_SETPSR		0xa3
 #define T_SVR4_GETHRTIME	0xa4
 #define T_SVR4_GETHRVTIME	0xa5
 #define T_SVR4_GETHRESTIME	0xa7


 #ifdef _KERNEL			/* pseudo traps for locore.s */
 #define	T_RWRET		-1	/* need first user window for trap return */
 #define	T_AST		-2	/* no-op, just needed reschedule or profile */
 #endif

 /* flags to system call (flags in %g1 along with syscall number) */
 #define	SYSCALL_G2RFLAG	0x400	/* on success, return to %g2 rather than npc */
 #define	SYSCALL_G7RFLAG	0x800	/* use %g7 as above (deprecated) */

 /*
  * `software trap' macros to keep people happy (sparc v8 manual says not
  * to set the upper bits).
  */
 #define	ST_BREAKPOINT	(T_BREAKPOINT & 0x7f)
 #define	ST_DIV0		(T_DIV0 & 0x7f)
 #define	ST_FLUSHWIN	(T_FLUSHWIN & 0x7f)
 #define	ST_SYSCALL	(T_SUN_SYSCALL & 0x7f)

 #endif /* _MACHINE_TRAP_H_ */
	/* $NetBSD: trap.h,v 1.11 1999/01/20 00:15:08 pk Exp $ */

	/*
	* Copyright (c) 1992, 1993
	* The Regents of the University of California. All rights reserved.
	*
	* This software was developed by the Computer Systems Engineering group
	* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
	* contributed to Berkeley.
	*
	* All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Lawrence Berkeley Laboratory.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Berkeley and its contributors.
	* 4. Neither the name of the University nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* @(#)trap.h 8.1 (Berkeley) 6/11/93
	*/
	/*
	* Sun4m support by Aaron Brown, Harvard University.
	* Changes Copyright (c) 1995 The President and Fellows of Harvard College.
	* All rights reserved.
	*/

	#ifndef _MACHINE_TRAP_H
	#define _MACHINE_TRAP_H

	/* trap vec (pri) description */
	#define T_RESET 0x00 /* (1) not actually vectored; jumps to 0 */
	#define T_TEXTFAULT 0x01 /* (2) address fault during instr fetch */
	#define T_ILLINST 0x02 /* (3) illegal instruction */
	#define T_PRIVINST 0x03 /* (4) privileged instruction */
	#define T_FPDISABLED 0x04 /* (5) fp instr while fp disabled */
	#define T_WINOF 0x05 /* (6) register window overflow */
	#define T_WINUF 0x06 /* (7) register window underflow */
	#define T_ALIGN 0x07 /* (8) address not properly aligned */
	#define T_FPE 0x08 /* (9) floating point exception */
	#define T_DATAFAULT 0x09 /* (10) address fault during data fetch */
	#define T_TAGOF 0x0a /* (11) tag overflow */
	/* 0x0b unused */
	/* 0x0c unused */
	/* 0x0d unused */
	/* 0x0e unused */
	/* 0x0f unused */
	/* 0x10 unused */
	#define T_L1INT 0x11 /* (27) level 1 interrupt */
	#define T_L2INT 0x12 /* (26) level 2 interrupt */
	#define T_L3INT 0x13 /* (25) level 3 interrupt */
	#define T_L4INT 0x14 /* (24) level 4 interrupt */
	#define T_L5INT 0x15 /* (23) level 5 interrupt */
	#define T_L6INT 0x16 /* (22) level 6 interrupt */
	#define T_L7INT 0x17 /* (21) level 7 interrupt */
	#define T_L8INT 0x18 /* (20) level 8 interrupt */
	#define T_L9INT 0x19 /* (19) level 9 interrupt */
	#define T_L10INT 0x1a /* (18) level 10 interrupt */
	#define T_L11INT 0x1b /* (17) level 11 interrupt */
	#define T_L12INT 0x1c /* (16) level 12 interrupt */
	#define T_L13INT 0x1d /* (15) level 13 interrupt */
	#define T_L14INT 0x1e /* (14) level 14 interrupt */
	#define T_L15INT 0x1f /* (13) level 15 interrupt */
	/* 0x20 unused */
	/* through 0x23 unused */
	#define T_CPDISABLED 0x24 /* (5) coprocessor instr while disabled */
	#define T_UNIMPLFLUSH 0x25 /* Unimplemented FLUSH */
	/* through 0x27 unused */
	#define T_CPEXCEPTION 0x28 /* (9) coprocessor exception */
	/* 0x29 unused */
	#define T_IDIV0 0x2a /* divide by zero (from hw [su]div instr) */
	#define T_STOREBUFFAULT 0x2b /* SuperSPARC: Store buffer copy-back fault */
	/* 0x2c unused */
	/* through 0x7f unused */

	/* beginning of `user' vectors (from trap instructions) - all priority 12 */
	#define T_SUN_SYSCALL 0x80 /* system call */
	#define T_BREAKPOINT 0x81 /* breakpoint `instruction' */
	#define T_DIV0 0x82 /* division routine was handed 0 */
	#define T_FLUSHWIN 0x83 /* flush windows */
	#define T_CLEANWIN 0x84 /* provide clean windows */
	#define T_RANGECHECK 0x85 /* ? */
	#define T_FIXALIGN 0x86 /* fix up unaligned accesses */
	#define T_INTOF 0x87 /* integer overflow ? */
	#define T_SVR4_SYSCALL 0x88 /* SVR4 system call */
	#define T_BSD_SYSCALL 0x89 /* BSD system call */
	#define T_KGDB_EXEC 0x8a /* for kernel gdb */

	/* 0x8b..0xff are currently unallocated, except the following */
	#define T_SVR4_GETCC 0xa0
	#define T_SVR4_SETCC 0xa1
	#define T_SVR4_GETPSR 0xa2
	#define T_SVR4_SETPSR 0xa3
	#define T_SVR4_GETHRTIME 0xa4
	#define T_SVR4_GETHRVTIME 0xa5
	#define T_SVR4_GETHRESTIME 0xa7


	#ifdef _KERNEL /* pseudo traps for locore.s */
	#define T_RWRET -1 /* need first user window for trap return */
	#define T_AST -2 /* no-op, just needed reschedule or profile */
	#endif

	/* flags to system call (flags in %g1 along with syscall number) */
	#define SYSCALL_G2RFLAG 0x400 /* on success, return to %g2 rather than npc */
	#define SYSCALL_G7RFLAG 0x800 /* use %g7 as above (deprecated) */

	/*
	* `software trap' macros to keep people happy (sparc v8 manual says not
	* to set the upper bits).
	*/
	#define ST_BREAKPOINT (T_BREAKPOINT & 0x7f)
	#define ST_DIV0 (T_DIV0 & 0x7f)
	#define ST_FLUSHWIN (T_FLUSHWIN & 0x7f)
	#define ST_SYSCALL (T_SUN_SYSCALL & 0x7f)

	#endif /* _MACHINE_TRAP_H_ */