jitsymbol.c File Reference

#include "opjitconv.h"
#include "opd_printf.h"
#include "op_libiberty.h"
#include "op_types.h"
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

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Typedefs
typedef int(*	compare_symbol )(void const , void const )
Functions
static u32	count_entries (void)
static void	fill_entry_array (struct jitentry *entries[])
static struct jitentry **	create_sorted_array (compare_symbol compare)
static int	cmp_symbolname (void const a, void const b)
static int	cmp_address (void const a, void const b)
static void	resort_address (void)
static void	resort_symbol (void)
void	create_arrays (void)
static void	insert_entry (struct jitentry *entry)
static char *	replacement_name (char *s, int i)
static void	invalidate_entry (struct jitentry *e)
static void	invalidate_earlybirds (unsigned long long start_time)
static int	select_one (int start_idx, int end_idx)
static void	split_entry (struct jitentry split, struct jitentry const keep)
static unsigned long long	eliminate_overlaps (int start_idx, int end_idx, int keep_idx)
static int	handle_overlap_region (int start_idx, int end_idx)
static int	scan_overlaps (void)
int	resolve_overlaps (unsigned long long start_time)
void	disambiguate_symbol_names (void)

Detailed Description

Handle symbols found in jitted code dump

Remarks:: Copyright 2007 OProfile authors; Read the file COPYING

Author:: Jens Wilke Maynard Johnson Philippe Elie Daniel Hansel

Copyright IBM Corporation 2007

Definition in file jitsymbol.c.

Typedef Documentation

typedef int(* compare_symbol)(void const *, void const *)

Definition at line 30 of file jitsymbol.c.

Function Documentation

static int cmp_address	(	void const *	a,
		void const *	b
	)			`[static]`

Definition at line 76 of file jitsymbol.c.

References jitentry::vma.

Referenced by create_arrays(), and resort_address().

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static int cmp_symbolname	(	void const *	a,
		void const *	b
	)			`[static]`

Definition at line 67 of file jitsymbol.c.

References jitentry::symbol_name.

Referenced by create_arrays(), disambiguate_symbol_names(), and resort_symbol().

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static u32 count_entries ( void ) [static]

Definition at line 34 of file jitsymbol.c.

References jitentry_list, and jitentry::next.

Referenced by create_arrays().

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void create_arrays ( void )

Definition at line 121 of file jitsymbol.c.

References cmp_address(), cmp_symbolname(), count_entries(), create_sorted_array(), entries_address_ascending, entries_symbols_ascending, entry_count, and max_entry_count.

Referenced by op_jit_convert().

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static struct jitentry** create_sorted_array ( compare_symbol compare ) [static, read]

Definition at line 56 of file jitsymbol.c.

References entry_count, and fill_entry_array().

Referenced by create_arrays().

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void disambiguate_symbol_names ( void )

Definition at line 522 of file jitsymbol.c.

References cmp_symbolname(), disambiguate_symbol_names(), entries_symbols_ascending, entry_count, replacement_name(), jitentry::sym_name_malloced, and jitentry::symbol_name.

Referenced by disambiguate_symbol_names(), and op_jit_convert().

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static unsigned long long eliminate_overlaps	(	int	start_idx,
		int	end_idx,
		int	keep_idx
	)			`[static]`

Definition at line 315 of file jitsymbol.c.

References jitentry::code_size, debug, entries_address_ascending, jitentry::life_end, jitentry::life_start, split_entry(), verbprintf, and jitentry::vma.

Referenced by handle_overlap_region().

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static void fill_entry_array ( struct jitentry * entries[] ) [static]

Definition at line 44 of file jitsymbol.c.

References jitentry_list, and jitentry::next.

Referenced by create_sorted_array().

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static int handle_overlap_region	(	int	start_idx,
		int	end_idx
	)			`[static]`

Definition at line 370 of file jitsymbol.c.

References jitentry::code_size, debug, eliminate_overlaps(), entries_address_ascending, jitentry::life_end, jitentry::life_start, OP_JIT_CONV_FAIL, OP_JIT_CONV_OK, select_one(), jitentry::sym_name_malloced, jitentry::symbol_name, verbprintf, and jitentry::vma.

Referenced by scan_overlaps().

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static void insert_entry ( struct jitentry * entry ) [static]

Definition at line 131 of file jitsymbol.c.

References entries_address_ascending, entries_symbols_ascending, entry_count, and max_entry_count.

Referenced by split_entry().

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static void invalidate_earlybirds ( unsigned long long start_time ) [static]

Definition at line 185 of file jitsymbol.c.

References entries_address_ascending, entry_count, invalidate_entry(), jitentry::life_end, resort_address(), and resort_symbol().

Referenced by resolve_overlaps().

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static void invalidate_entry ( struct jitentry * e ) [static]

Definition at line 174 of file jitsymbol.c.

References debug, jitentry::symbol_name, verbprintf, and jitentry::vma.

Referenced by invalidate_earlybirds(), and split_entry().

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static char* replacement_name	(	char *	s,
		int	i
	)			`[static]`

Definition at line 154 of file jitsymbol.c.

Referenced by disambiguate_symbol_names().

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int resolve_overlaps ( unsigned long long start_time )

Definition at line 498 of file jitsymbol.c.

References debug, invalidate_earlybirds(), OP_JIT_CONV_FAIL, OP_JIT_CONV_OK, resort_address(), resort_symbol(), scan_overlaps(), and verbprintf.

Referenced by op_jit_convert().

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static void resort_address ( void ) [static]

Definition at line 89 of file jitsymbol.c.

References cmp_address(), entries_address_ascending, entry_count, and jitentry::vma.

Referenced by invalidate_earlybirds(), and resolve_overlaps().

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static void resort_symbol ( void ) [static]

Definition at line 112 of file jitsymbol.c.

References cmp_symbolname(), entries_address_ascending, entries_symbols_ascending, and entry_count.

Referenced by invalidate_earlybirds(), and resolve_overlaps().

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static int scan_overlaps ( void ) [static]

Take a symbol [i] and look for the next symbol(s) [j] that are overlapping symbol [i]. If a symbol [j] is found that is not overlapping symbol [i] the symbols [i]..[j-1] are handled to be not overlapping anymore. See descriptions of handle_overlap_region() and eliminate_overlaps() for further details of this handling. E.g. possible cases to be handled could be:

sym1 |-----------| sym2 |---|

sym1 |--------| sym2 |--------|

sym1 |--------| sym2 |-------| sym3 |---------|

But in the following case

sym1 |--------| sym2 |-------------| sym3 |----------|

sym3 would not overlap with sym1. Therefore handle_overlap_regio() would only be called for sym1 up to sym2.

Definition at line 427 of file jitsymbol.c.

References jitentry::code_size, debug, entries_address_ascending, entry_count, handle_overlap_region(), OP_JIT_CONV_FAIL, verbprintf, and jitentry::vma.

Referenced by resolve_overlaps().

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