1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _FASTTRAP_IMPL_H 28*0Sstevel@tonic-gate #define _FASTTRAP_IMPL_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/types.h> 33*0Sstevel@tonic-gate #include <sys/dtrace.h> 34*0Sstevel@tonic-gate #include <sys/proc.h> 35*0Sstevel@tonic-gate #include <sys/fasttrap.h> 36*0Sstevel@tonic-gate #include <sys/fasttrap_isa.h> 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #ifdef __cplusplus 39*0Sstevel@tonic-gate extern "C" { 40*0Sstevel@tonic-gate #endif 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * Interfaces for fasttrap_isa.c to consume. 44*0Sstevel@tonic-gate */ 45*0Sstevel@tonic-gate typedef struct fasttrap_provider fasttrap_provider_t; 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate struct fasttrap_provider { 48*0Sstevel@tonic-gate pid_t ftp_pid; /* process ID for this prov. */ 49*0Sstevel@tonic-gate char ftp_name[DTRACE_PROVNAMELEN]; /* prov. name (w/o the pid) */ 50*0Sstevel@tonic-gate dtrace_provider_id_t ftp_provid; /* DTrace provider handle */ 51*0Sstevel@tonic-gate uint_t ftp_marked; /* mark for possible removal */ 52*0Sstevel@tonic-gate uint_t ftp_defunct; /* denotes a lame duck prov. */ 53*0Sstevel@tonic-gate kmutex_t ftp_mtx; /* provider lock */ 54*0Sstevel@tonic-gate uint64_t ftp_rcount; /* enabled probes ref count */ 55*0Sstevel@tonic-gate uint64_t ftp_ccount; /* consumers creating probes */ 56*0Sstevel@tonic-gate fasttrap_provider_t *ftp_next; /* next prov. in hash chain */ 57*0Sstevel@tonic-gate }; 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate typedef struct fasttrap_id fasttrap_id_t; 60*0Sstevel@tonic-gate typedef struct fasttrap_probe fasttrap_probe_t; 61*0Sstevel@tonic-gate typedef struct fasttrap_tracepoint fasttrap_tracepoint_t; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate struct fasttrap_id { 64*0Sstevel@tonic-gate fasttrap_probe_t *fti_probe; /* referrring probe */ 65*0Sstevel@tonic-gate fasttrap_id_t *fti_next; /* enabled probe list on tp */ 66*0Sstevel@tonic-gate }; 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate typedef struct fasttrap_id_tp { 69*0Sstevel@tonic-gate fasttrap_id_t fit_id; 70*0Sstevel@tonic-gate fasttrap_tracepoint_t *fit_tp; 71*0Sstevel@tonic-gate } fasttrap_id_tp_t; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate struct fasttrap_probe { 74*0Sstevel@tonic-gate dtrace_id_t ftp_id; /* DTrace probe identifier */ 75*0Sstevel@tonic-gate pid_t ftp_pid; /* pid for this probe */ 76*0Sstevel@tonic-gate fasttrap_provider_t *ftp_prov; /* this probe's provider */ 77*0Sstevel@tonic-gate uintptr_t ftp_faddr; /* associated function's addr */ 78*0Sstevel@tonic-gate size_t ftp_fsize; /* associated function's size */ 79*0Sstevel@tonic-gate fasttrap_probe_type_t ftp_type; /* type of probe */ 80*0Sstevel@tonic-gate uint_t ftp_enabled; /* is this probe enabled */ 81*0Sstevel@tonic-gate uint64_t ftp_gen; /* modification generation */ 82*0Sstevel@tonic-gate uint64_t ftp_ntps; /* number of tracepoints */ 83*0Sstevel@tonic-gate uint8_t *ftp_argmap; /* native to translated args */ 84*0Sstevel@tonic-gate uint8_t ftp_nargs; /* translated argument count */ 85*0Sstevel@tonic-gate char *ftp_xtypes; /* translated types index */ 86*0Sstevel@tonic-gate char *ftp_ntypes; /* native types index */ 87*0Sstevel@tonic-gate fasttrap_id_tp_t ftp_tps[1]; /* flexible array */ 88*0Sstevel@tonic-gate }; 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate #define FASTTRAP_ID_INDEX(id) \ 91*0Sstevel@tonic-gate ((fasttrap_id_tp_t *)(((char *)(id) - offsetof(fasttrap_id_tp_t, fit_id))) - \ 92*0Sstevel@tonic-gate &(id)->fti_probe->ftp_tps[0]) 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate struct fasttrap_tracepoint { 95*0Sstevel@tonic-gate fasttrap_provider_t *ftt_prov; /* tracepoint's provider */ 96*0Sstevel@tonic-gate uintptr_t ftt_pc; /* address of tracepoint */ 97*0Sstevel@tonic-gate pid_t ftt_pid; /* pid of tracepoint */ 98*0Sstevel@tonic-gate fasttrap_machtp_t ftt_mtp; /* ISA-specific portion */ 99*0Sstevel@tonic-gate fasttrap_id_t *ftt_ids; /* NULL-terminated list */ 100*0Sstevel@tonic-gate fasttrap_id_t *ftt_retids; /* NULL-terminated list */ 101*0Sstevel@tonic-gate fasttrap_tracepoint_t *ftt_next; /* link in global hash */ 102*0Sstevel@tonic-gate }; 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate typedef struct fasttrap_bucket { 105*0Sstevel@tonic-gate kmutex_t ftb_mtx; 106*0Sstevel@tonic-gate void *ftb_data; 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate uint8_t ftb_pad[64 - sizeof (kmutex_t) - sizeof (void *)]; 109*0Sstevel@tonic-gate } fasttrap_bucket_t; 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate typedef struct fasttrap_hash { 112*0Sstevel@tonic-gate ulong_t fth_nent; 113*0Sstevel@tonic-gate ulong_t fth_mask; 114*0Sstevel@tonic-gate fasttrap_bucket_t *fth_table; 115*0Sstevel@tonic-gate } fasttrap_hash_t; 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate /* 118*0Sstevel@tonic-gate * If at some future point these assembly functions become observable by 119*0Sstevel@tonic-gate * DTrace, then these defines should become separate functions so that the 120*0Sstevel@tonic-gate * fasttrap provider doesn't trigger probes during internal operations. 121*0Sstevel@tonic-gate */ 122*0Sstevel@tonic-gate #define fasttrap_copyout copyout 123*0Sstevel@tonic-gate #define fasttrap_fuword32 fuword32 124*0Sstevel@tonic-gate #define fasttrap_suword32 suword32 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate #define fasttrap_fulword fulword 127*0Sstevel@tonic-gate #define fasttrap_sulword sulword 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate extern void fasttrap_sigtrap(proc_t *, kthread_t *, uintptr_t); 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate extern dtrace_id_t fasttrap_probe_id; 132*0Sstevel@tonic-gate extern fasttrap_hash_t fasttrap_tpoints; 133*0Sstevel@tonic-gate 134*0Sstevel@tonic-gate #define FASTTRAP_TPOINTS_INDEX(pid, pc) \ 135*0Sstevel@tonic-gate (((pc) / sizeof (fasttrap_instr_t) + (pid)) & fasttrap_tpoints.fth_mask) 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate /* 138*0Sstevel@tonic-gate * Must be implemented by fasttrap_isa.c 139*0Sstevel@tonic-gate */ 140*0Sstevel@tonic-gate extern int fasttrap_tracepoint_init(proc_t *, fasttrap_probe_t *, 141*0Sstevel@tonic-gate fasttrap_tracepoint_t *, uintptr_t); 142*0Sstevel@tonic-gate extern int fasttrap_tracepoint_install(proc_t *, fasttrap_tracepoint_t *); 143*0Sstevel@tonic-gate extern int fasttrap_tracepoint_remove(proc_t *, fasttrap_tracepoint_t *); 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate extern int fasttrap_probe(struct regs *); 146*0Sstevel@tonic-gate extern int fasttrap_pid_probe(struct regs *); 147*0Sstevel@tonic-gate extern int fasttrap_return_probe(struct regs *); 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate extern uint64_t fasttrap_getarg(void *, dtrace_id_t, void *, int, int); 150*0Sstevel@tonic-gate extern uint64_t fasttrap_usdt_getarg(void *, dtrace_id_t, void *, int, int); 151*0Sstevel@tonic-gate 152*0Sstevel@tonic-gate #ifdef __cplusplus 153*0Sstevel@tonic-gate } 154*0Sstevel@tonic-gate #endif 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate #endif /* _FASTTRAP_IMPL_H */ 157