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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _FASTTRAP_ISA_H
27#define _FASTTRAP_ISA_H
28
29#pragma ident "%Z%%M% %I% %E% SMI"
30
31#include <sys/types.h>
32
33#ifdef __cplusplus
34extern "C" {
35#endif
36
37#define FASTTRAP_MAX_INSTR_SIZE 15
38
39#define FASTTRAP_INSTR 0xcc
40
41#define FASTTRAP_SUNWDTRACE_SIZE 64
42
43typedef uint8_t fasttrap_instr_t;
44
45typedef struct fasttrap_machtp {
46 uint8_t ftmt_instr[FASTTRAP_MAX_INSTR_SIZE]; /* orig. instr. */
47 uint8_t ftmt_size; /* instruction size */
48#ifdef __amd64
49 uint8_t ftmt_ripmode; /* %rip-relative handling mode */
50 uint8_t ftmt_modrm; /* saved modrm byte */
51#endif
52 uint8_t ftmt_type; /* emulation type */
53 uint8_t ftmt_code; /* branch condition */
54 uint8_t ftmt_base; /* branch base */
55 uint8_t ftmt_index; /* branch index */
56 uint8_t ftmt_scale; /* branch scale */
57 uint8_t ftmt_segment; /* segment for memory accesses */
58 uintptr_t ftmt_dest; /* destination of control flow */
59} fasttrap_machtp_t;
60
61#define ftt_instr ftt_mtp.ftmt_instr
62#ifdef __amd64
63#define ftt_ripmode ftt_mtp.ftmt_ripmode
64#define ftt_modrm ftt_mtp.ftmt_modrm
65#endif
66#define ftt_size ftt_mtp.ftmt_size
67#define ftt_type ftt_mtp.ftmt_type
68#define ftt_code ftt_mtp.ftmt_code
69#define ftt_base ftt_mtp.ftmt_base
70#define ftt_index ftt_mtp.ftmt_index
71#define ftt_scale ftt_mtp.ftmt_scale
72#define ftt_segment ftt_mtp.ftmt_segment
73#define ftt_dest ftt_mtp.ftmt_dest
74
75#define FASTTRAP_T_COMMON 0x00 /* common case -- no emulation */
76#define FASTTRAP_T_JCC 0x01 /* near and far conditional jumps */
77#define FASTTRAP_T_LOOP 0x02 /* loop instructions */
78#define FASTTRAP_T_JCXZ 0x03 /* jump if %ecx/%rcx is zero */
79#define FASTTRAP_T_JMP 0x04 /* relative jump */
80#define FASTTRAP_T_CALL 0x05 /* near call (and link) */
81#define FASTTRAP_T_RET 0x06 /* ret */
82#define FASTTRAP_T_RET16 0x07 /* ret <imm16> */
83
84/*
85 * For performance rather than correctness.
86 */
87#define FASTTRAP_T_PUSHL_EBP 0x10 /* pushl %ebp (for function entry) */
88#define FASTTRAP_T_NOP 0x11 /* nop */
89
90#define FASTTRAP_RIP_1 0x1
91#define FASTTRAP_RIP_2 0x2
92#define FASTTRAP_RIP_X 0x4
93
94/*
95 * Segment values.
96 */
97#define FASTTRAP_SEG_NONE 0
98#define FASTTRAP_SEG_CS 1
99#define FASTTRAP_SEG_DS 2
100#define FASTTRAP_SEG_ES 3
101#define FASTTRAP_SEG_FS 4
102#define FASTTRAP_SEG_GS 5
103#define FASTTRAP_SEG_SS 6
104
105#define FASTTRAP_AFRAMES 3
106#define FASTTRAP_RETURN_AFRAMES 4
107#define FASTTRAP_ENTRY_AFRAMES 3
108#define FASTTRAP_OFFSET_AFRAMES 3
109
110#ifdef __cplusplus
111}
112#endif
113
114#endif /* _FASTTRAP_ISA_H */
115