/*
* Copyright (c) 2013, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NUMATOP_SYM_H
#define _NUMATOP_SYM_H
#include <sys/types.h>
#include <stdio.h>
#include <elf.h>
#include "../types.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
* This symbol type is the same as STT_FUNC except that it always
* points to a function or piece of executable code which takes no
* arguments and which returns a function pointer.
*/
#ifndef STT_IFUNC
#define STT_IFUNC 10
#endif
#define SYM_ITEM_NUM 1024
#define SYM_NAME_SIZE 32
#define SYM_LIB_NUM 16
#define SYM_CLASS_NUM 2
#define ELF32_LOAD_ADDR 0x08048000
#define ELF64_LOAD_ADDR 0x400000
#define INVALID_LOADADDR (uint64_t)(-1)
typedef enum {
SYM_CLASS_INVALID = -1,
SYM_CLASS_ELF32 = 0,
SYM_CLASS_ELF64
} sym_class_t;
typedef enum {
SYM_TYPE_FUNC = 1,
SYM_TYPE_OBJECT
} sym_type_t;
typedef struct _sym_item {
char name[SYM_NAME_SIZE];
sym_type_t type;
unsigned int index;
uint64_t off;
uint64_t size;
} sym_item_t;
typedef struct _sym_binary {
sym_item_t *items;
int nitem_cur;
int nitem_max;
FILE *fp;
char path[PATH_MAX];
} sym_binary_t;
typedef struct _sym_lib {
sym_binary_t binary;
struct _sym_lib *next;
} sym_lib_t;
typedef struct _sym_libref {
sym_lib_t **libs;
uint64_t *lib_loadaddr;
int nlib_cur;
int nlib_max;
} sym_libref_t;
typedef struct _sym {
sym_binary_t image;
uint64_t image_loadaddr;
sym_libref_t libref;
boolean_t loaded;
} sym_t;
typedef struct _sym_ops {
int (*pfn_binary_read)(sym_binary_t *, sym_type_t);
} sym_ops_t;
typedef struct _sym_callentry {
uint64_t addr;
uint64_t size;
char name[SYM_NAME_SIZE];
} sym_callentry_t;
typedef struct _sym_callchain {
sym_callentry_t *entry_arr;
int nentry;
int naccess;
struct _sym_callchain *prev;
struct _sym_callchain *next;
} sym_callchain_t;
typedef struct _sym_chainlist {
sym_callchain_t *head;
sym_callchain_t *tail;
int num;
} sym_chainlist_t;
#define IP_HIT(ip, addr, size) \
(((ip) >= (addr)) && ((ip) < (addr) + (size)))
struct _track_proc;
void sym_init(void);
void sym_fini(void);
int sym_load(struct _track_proc *, sym_type_t);
void sym_free(sym_t *);
int sym_callchain_add(sym_t *, uint64_t *, int, sym_chainlist_t *);
void sym_callchain_resort(sym_chainlist_t *);
sym_callchain_t* sym_callchain_detach(sym_chainlist_t *);
void sym_callchain_free(sym_callchain_t *);
void sym_chainlist_free(sym_chainlist_t *);
int sym_chainlist_nentry(sym_chainlist_t *, int *);
#ifdef __cplusplus
}
#endif
#endif /* _NUMATOP_SYM_H */