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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_FASTTRAP_ISA_H
     28 #define	_FASTTRAP_ISA_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <sys/types.h>
     33 
     34 #ifdef	__cplusplus
     35 extern "C" {
     36 #endif
     37 
     38 /*
     39  * This is our reserved trap instruction: ta 0x38
     40  */
     41 #define	FASTTRAP_INSTR			0x91d02038
     42 
     43 #define	FASTTRAP_SUNWDTRACE_SIZE	128
     44 
     45 typedef uint32_t	fasttrap_instr_t;
     46 
     47 typedef struct fasttrap_machtp {
     48 	fasttrap_instr_t	ftmt_instr;	/* original instruction */
     49 	uintptr_t		ftmt_dest;	/* destination of DCTI */
     50 	uint8_t			ftmt_type;	/* emulation type */
     51 	uint8_t			ftmt_flags;	/* emulation flags */
     52 	uint8_t			ftmt_cc;	/* which cc to look at */
     53 	uint8_t			ftmt_code;	/* branch condition */
     54 } fasttrap_machtp_t;
     55 
     56 #define	ftt_instr	ftt_mtp.ftmt_instr
     57 #define	ftt_dest	ftt_mtp.ftmt_dest
     58 #define	ftt_type	ftt_mtp.ftmt_type
     59 #define	ftt_flags	ftt_mtp.ftmt_flags
     60 #define	ftt_cc		ftt_mtp.ftmt_cc
     61 #define	ftt_code	ftt_mtp.ftmt_code
     62 
     63 #define	FASTTRAP_T_COMMON	0x00	/* common case -- no emulation */
     64 #define	FASTTRAP_T_CCR		0x01	/* integer condition code branch */
     65 #define	FASTTRAP_T_FCC		0x02	/* floating-point branch */
     66 #define	FASTTRAP_T_REG		0x03	/* register predicated branch */
     67 #define	FASTTRAP_T_ALWAYS	0x04	/* branch always */
     68 #define	FASTTRAP_T_CALL		0x05	/* call instruction */
     69 #define	FASTTRAP_T_JMPL		0x06	/* jmpl instruction */
     70 #define	FASTTRAP_T_RDPC		0x07	/* rdpc instruction */
     71 #define	FASTTRAP_T_RETURN	0x08	/* return instruction */
     72 
     73 /*
     74  * For performance rather than correctness.
     75  */
     76 #define	FASTTRAP_T_SAVE		0x10	/* save instruction (func entry only) */
     77 #define	FASTTRAP_T_RESTORE	0x11	/* restore instruction */
     78 #define	FASTTRAP_T_OR		0x12	/* mov instruction */
     79 #define	FASTTRAP_T_SETHI	0x13	/* sethi instruction (includes nop) */
     80 
     81 #define	FASTTRAP_F_ANNUL	0x01	/* branch is annulled */
     82 #define	FASTTRAP_F_RETMAYBE	0x02	/* not definitely a return site */
     83 
     84 #define	FASTTRAP_AFRAMES		3
     85 #define	FASTTRAP_RETURN_AFRAMES		4
     86 #define	FASTTRAP_ENTRY_AFRAMES		3
     87 #define	FASTTRAP_OFFSET_AFRAMES		3
     88 
     89 
     90 #ifdef	__cplusplus
     91 }
     92 #endif
     93 
     94 #endif	/* _FASTTRAP_ISA_H */
     95