203 lines
5.7 KiB
C
203 lines
5.7 KiB
C
/*
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* Copyright 1997
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* Digital Equipment Corporation. All rights reserved.
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*
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* This software is furnished under license and may be used and
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* copied only in accordance with the following terms and conditions.
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* Subject to these conditions, you may download, copy, install,
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* use, modify and distribute this software in source and/or binary
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* form. No title or ownership is transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce
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* and retain this copyright notice and list of conditions as
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* they appear in the source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of
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* Digital Equipment Corporation. Neither the "Digital Equipment
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* Corporation" name nor any trademark or logo of Digital Equipment
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* Corporation may be used to endorse or promote products derived
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* from this software without the prior written permission of
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* Digital Equipment Corporation.
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*
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* 3) This software is provided "AS-IS" and any express or implied
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* warranties, including but not limited to, any implied warranties
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* of merchantability, fitness for a particular purpose, or
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* non-infringement are disclaimed. In no event shall DIGITAL be
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* liable for any damages whatsoever, and in particular, DIGITAL
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* shall not be liable for special, indirect, consequential, or
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* incidental damages or damages for lost profits, loss of
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* revenue or loss of use, whether such damages arise in contract,
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* negligence, tort, under statute, in equity, at law or otherwise,
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* even if advised of the possibility of such damage.
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*/
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/*
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* Remote profiler structures used to communicate between the
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* target (SHARK) and the host (GUI'd) machine.
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* Also has stuff used to talk between the profiling driver and
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* profiling server function.
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*
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*/
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#ifndef __PROFILE_IO_H__
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#define __PROFILE_IO_H__
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#include <sys/types.h>
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/* I have no idea what the 'P' group id means,
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* I presume it isn't used for much.??
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*/
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#define PROFIOSTART _IOWR('P', 0, struct profStartInfo) /* start profiling */
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#define PROFIOSTOP _IO('P', 1) /* stop profiling */
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/* hash table stuff.
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*/
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#define TABLE_ENTRY_SIZE (sizeof(struct hashEntry))
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#define REDUNDANT_BITS 0x02
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#define COUNT_BITS 0x02
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#define COUNT_BIT_MASK 0x03
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/* sample mode flags.
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*/
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#define SAMPLE_MODE_MASK 0x03
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#define SAMPLE_PROC 0x01
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#define SAMPLE_KERN 0x02
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/* an actual entry
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*/
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struct profHashEntry
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{
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unsigned int pc; /* the pc, minus any redundant bits. */
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unsigned int next; /* the next pointer as an entry index */
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unsigned short counts[4]; /* the counts */
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};
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/* table header.
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*/
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struct profHashHeader
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{
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unsigned int tableSize; /* total table size in entries */
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unsigned int entries; /* first level table size, in entries */
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unsigned int samples; /* the number of samples in the table. */
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unsigned int missed; /* the number of samples missed. */
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unsigned int fiqs; /* the number of fiqs. */
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unsigned int last; /* last entry in the overflow area */
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pid_t pid; /* The pid being sampled */
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int mode; /* kernel or user mode */
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}
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__attribute__ ((packed));
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/* actual table
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*/
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struct profHashTable
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{
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struct profHashHeader hdr;
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struct profHashEntry *entries;
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};
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/* information passed to the start/stop ioctl.
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*/
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struct profStartInfo
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{
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pid_t pid; /* if this is -1 sample no processes */
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unsigned int tableSize; /* the total table size in entries */
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unsigned int entries; /* number of entries to hash */
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unsigned int mode; /* if set profile the kernel */
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int status; /* status of command returned by driver. */
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};
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/* Communications Protocol stuff
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* defines the messages that the host and
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* target will use to communicate.
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*/
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struct packetHeader
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{
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int code; /* this will either be a command or a
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* data specifier.
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*/
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unsigned int size; /* size of data to follow,
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* quantity depends on code.
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*/
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}
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__attribute__ ((packed));
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struct startSamplingCommand
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{
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pid_t pid; /* the pid to sample */
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unsigned int tableSize; /* the total table size in entries */
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unsigned int entries; /* number of entries to hash */
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unsigned int mode; /* if set profile kernel also. */
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}
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__attribute__ ((packed));
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struct startSamplingResponse
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{
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int status; /* identifies the status of the command. */
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int count; /* number of shared lib entries following. */
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}
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__attribute__ ((packed));
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struct stopSamplingCommand
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{
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int alert; /* if set then the daemon sends a SIGINT to
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* the process.
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*/
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}
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__attribute__ ((packed));
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struct disassemble
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{
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unsigned int offset; /* offset into file to begin disassembling */
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unsigned int length; /* length in arm words ie 32bits. */
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}
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__attribute__ ((packed));
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struct profStatus
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{
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unsigned int status; /* identifies the status. */
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}
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__attribute__ ((packed));
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/* Command/Data Types
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* Only one bit may be set for any one command.
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* so these are not masks but distinct values.
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*/
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#define START_SAMPLING 0x01
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#define STOP_SAMPLING 0x02
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#define READ_TABLE 0x03
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#define DISASSEMBLY 0x04
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#define SYMBOL_INFO 0x05
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#define PROCESS_INFO 0x06
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/* Data Types */
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#define TABLE_DATA 0x07
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#define SYMBOL_DATA 0x08
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#define DISAS_DATA 0x09
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#define PROC_DATA 0x0a
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#define STATUS_DATA 0x0b
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#define START_DATA 0x0c
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/* Status Codes */
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#define CMD_OK 0x00
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#define ALREADY_SAMPLING 0x01
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#define NOT_SAMPLING 0x02
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#define NO_MEMORY 0x03
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#define BAD_TABLE_SIZE 0x04
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#define ILLEGAL_PACKET 0x05
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#define ILLEGAL_COMMAND 0x06
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#define BAD_OPTION 0x07
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#endif
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