usr/src/uts/common/sys/kdi.h

   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 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _KDI_H
  27 #define _KDI_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #include <sys/types.h>
  32
  33 /*
  34  * The Kernel/Debugger interface.
  35  *
  36  * The Debugger -> Kernel portion of the interface is handled by the kdi_t,
  37  * which is defined in the archkdi.h files.  These functions are intended to
  38  * be called only when the system is stopped and the debugger is in control.
  39  *
  40  * The Kernel -> Debugger portion is handled by the debugvec_t, which is
  41  * defined here.  These functions are used by the kernel to inform the debugger
  42  * of various state changes.
  43  */
  44
  45 #ifdef __cplusplus
  46 extern "C" {
  47 #endif
  48
  49 /*
  50  * The VA range reserved for the debugger; used by kmdb.
  51  */
  52 extern const caddr_t kdi_segdebugbase;
  53 extern const size_t kdi_segdebugsize;
  54
  55 struct cpu;
  56 struct modctl;
  57 struct gate_desc;
  58 struct user_desc;
  59
  60 typedef struct kdi_debugvec kdi_debugvec_t;
  61 typedef struct kdi kdi_t;
  62
  63 extern kdi_debugvec_t   *kdi_dvec;
  64 extern struct modctl    *kdi_dmods;
  65
  66 #define KDI_VERSION             7
  67
  68 extern void kdi_dvec_vmready(void);
  69 extern void kdi_dvec_memavail(void);
  70 #if defined(__sparc)
  71 extern void kdi_dvec_cpu_init(struct cpu *);
  72 extern void kdi_dvec_cpr_restart(void);
  73 #endif
  74 extern void kdi_dvec_modavail(void);
  75 extern void kdi_dvec_thravail(void);
  76 extern void kdi_dvec_mod_loaded(struct modctl *);
  77 extern void kdi_dvec_mod_unloading(struct modctl *);
  78
  79 /*
  80  * The state machine described below is used to coordinate the efforts of
  81  * kmdb and dtrace.  As both use breakpoints, only one may be currently be
  82  * active at a given time.  Transitions are possible between the idle state
  83  * and either of the active states, but not directly between the two active
  84  * states.
  85  */
  86 typedef enum kdi_dtrace_set {
  87         KDI_DTSET_DTRACE_ACTIVATE,
  88         KDI_DTSET_DTRACE_DEACTIVATE,
  89         KDI_DTSET_KMDB_BPT_ACTIVATE,
  90         KDI_DTSET_KMDB_BPT_DEACTIVATE
  91 } kdi_dtrace_set_t;
  92
  93 typedef enum {
  94         KDI_DTSTATE_DTRACE_ACTIVE,
  95         KDI_DTSTATE_IDLE,
  96         KDI_DTSTATE_KMDB_BPT_ACTIVE
  97 } kdi_dtrace_state_t;
  98
  99 extern int kdi_dtrace_set(kdi_dtrace_set_t);
 100
 101 #ifdef __cplusplus
 102 }
 103 #endif
 104
 105 #endif /* _KDI_H */