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/* -*- linux-c -*-
* Copyright (C) 2005-2008 Red Hat Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
#ifndef _STP_SYM_H_
#define _STP_SYM_H_
struct _stp_symbol {
unsigned long addr;
const char *symbol;
};
struct _stp_section {
const char *name;
unsigned long addr; /* XXX: belongs in per-address-space tables */
struct _stp_symbol *symbols; /* ordered by address */
unsigned num_symbols;
};
struct _stp_module {
const char* name;
struct _stp_section *sections;
unsigned num_sections;
/* A pointer to the struct module. Note that we cannot */
/* trust this because as of 2.6.19, there are not yet */
/* any notifier hooks that will tell us when a module */
/* is unloading. */
unsigned long module; /* XXX: why not struct module * ? */
/* This is to undo .debug_frame relocation performed by elfutils, */
/* which is done during the translate phase when we encode the */
/* unwind data into the module. See adjustStartLoc() in unwind.c. */
unsigned long dwarf_module_base;
/* the stack unwind data for this module */
void *unwind_data;
void *unwind_hdr;
uint32_t unwind_data_len;
uint32_t unwind_hdr_len;
uint32_t unwind_is_ehframe; /* unwind data comes from .eh_frame */
/* build-id information */
unsigned char *build_id_bits;
unsigned long build_id_offset;
unsigned long notes_sect;
int build_id_len;
};
/* Defined by translator-generated stap-symbols.h. */
struct _stp_module *_stp_modules [];
unsigned _stp_num_modules;
/* the number of modules in the arrays */
static unsigned long _stp_kretprobe_trampoline = 0;
unsigned long _stp_module_relocate (const char *module, const char *section, unsigned long offset);
static struct _stp_module *_stp_get_unwind_info (unsigned long addr);
#endif /* _STP_SYM_H_ */
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