bsd/sys/sdt_impl.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, 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 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SDT_IMPL_H
  28 #define _SDT_IMPL_H
  29
  30 /*
  31  * This file has been created by splitting up the original DTrace sdt.h
  32  * header. Keep the pragma notice here to allow version tracking.
  33  */
  34
  35 /* #pragma ident        "@(#)sdt.h      1.7     05/06/08 SMI" */
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 extern const char *sdt_prefix;
  42
  43 typedef struct sdt_probedesc {
  44         char                    *sdpd_name;     /* name of this probe */
  45 #if defined(__APPLE__)
  46         char                    *sdpd_func;
  47 #endif /* __APPLE__ */
  48         unsigned long           sdpd_offset;    /* offset of call in text */
  49         struct sdt_probedesc    *sdpd_next;     /* next static probe */
  50 } sdt_probedesc_t;
  51
  52 #ifdef  __cplusplus
  53 }
  54 #endif
  55
  56 /* #pragma ident        "@(#)sdt_impl.h 1.3     05/06/08 SMI" */
  57
  58 #ifdef  __cplusplus
  59 extern "C" {
  60 #endif
  61
  62 #include <sys/dtrace.h>
  63
  64 #if !defined(__APPLE__)
  65 #if defined(__i386) || defined(__amd64)
  66 typedef uint8_t sdt_instr_t;
  67 #else
  68 typedef uint32_t sdt_instr_t;
  69 #endif
  70 #else
  71 struct module {
  72         int sdt_nprobes;
  73         sdt_probedesc_t *sdt_probes;
  74 };
  75
  76 extern int sdt_invop(uintptr_t, uintptr_t *, uintptr_t);
  77 #if defined (__APPLE__)
  78 extern uint64_t sdt_getarg(void *, dtrace_id_t, void *, int, int);
  79 #endif /* __APPLE__ */
  80
  81 void sdt_provide_module(void *, struct modctl *);
  82 void sdt_init(void);
  83
  84 extern int          sdt_probetab_size;
  85 extern int          sdt_probetab_mask;
  86 #define SDT_ADDR2NDX(addr)  ((((uintptr_t)(addr)) >> 4) & sdt_probetab_mask)
  87
  88
  89 #if defined(__i386__) || defined(__x86_64__)
  90 typedef uint8_t sdt_instr_t;
  91 #else
  92 #error Unknown implementation
  93 #endif
  94 #endif /* __APPLE__ */
  95
  96 typedef struct sdt_provider {
  97         const char                      *sdtp_name;     /* name of provider */
  98         const char                      *sdtp_prefix;   /* prefix for probe names */
  99         dtrace_pattr_t          *sdtp_attr;     /* stability attributes */
 100         dtrace_provider_id_t    sdtp_id;        /* provider ID */
 101 } sdt_provider_t;
 102
 103 extern sdt_provider_t sdt_providers[];          /* array of providers */
 104
 105 typedef struct sdt_probe {
 106         sdt_provider_t  *sdp_provider;          /* provider */
 107         char            *sdp_name;              /* name of probe */
 108         int             sdp_namelen;            /* length of allocated name */
 109         dtrace_id_t     sdp_id;                 /* probe ID */
 110         struct modctl   *sdp_ctl;               /* modctl for module */
 111         int             sdp_loadcnt;            /* load count for module */
 112         int             sdp_primary;            /* non-zero if primary mod */
 113         sdt_instr_t     *sdp_patchpoint;        /* patch point */
 114         sdt_instr_t     sdp_patchval;           /* instruction to patch */
 115         sdt_instr_t     sdp_savedval;           /* saved instruction value */
 116         struct sdt_probe *sdp_next;             /* next probe */
 117         struct sdt_probe *sdp_hashnext;         /* next on hash */
 118 } sdt_probe_t;
 119
 120 typedef struct sdt_argdesc {
 121         const char *sda_provider;               /* provider for arg */
 122         const char *sda_name;                   /* name of probe */
 123         const int sda_ndx;                      /* argument index */
 124         const int sda_mapping;                  /* mapping of argument */
 125         const char *sda_native;                 /* native type of argument */
 126         const char *sda_xlate;                  /* translated type of arg */
 127 } sdt_argdesc_t;
 128
 129 extern void sdt_getargdesc(void *, dtrace_id_t, void *, dtrace_argdesc_t *);
 130
 131 #ifdef  __cplusplus
 132 }
 133 #endif
 134
 135 #endif  /* _SDT_IMPL_H */