973 lines
27 KiB
C
973 lines
27 KiB
C
/* Read and write coverage files, and associated functionality.
|
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Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999,
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2000, 2001, 2003, 2004 Free Software Foundation, Inc.
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Contributed by James E. Wilson, UC Berkeley/Cygnus Support;
|
||
based on some ideas from Dain Samples of UC Berkeley.
|
||
Further mangling by Bob Manson, Cygnus Support.
|
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Further mangled by Nathan Sidwell, CodeSourcery
|
||
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This file is part of GCC.
|
||
|
||
GCC is free software; you can redistribute it and/or modify it under
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||
the terms of the GNU General Public License as published by the Free
|
||
Software Foundation; either version 2, or (at your option) any later
|
||
version.
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||
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||
for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GCC; see the file COPYING. If not, write to the Free
|
||
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
|
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02111-1307, USA. */
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|
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|
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#define GCOV_LINKAGE
|
||
|
||
#include "config.h"
|
||
#include "system.h"
|
||
#include "coretypes.h"
|
||
#include "tm.h"
|
||
#include "rtl.h"
|
||
#include "tree.h"
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||
#include "flags.h"
|
||
#include "output.h"
|
||
#include "regs.h"
|
||
#include "expr.h"
|
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#include "function.h"
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||
#include "toplev.h"
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#include "ggc.h"
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||
#include "target.h"
|
||
#include "coverage.h"
|
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#include "libfuncs.h"
|
||
#include "langhooks.h"
|
||
#include "hashtab.h"
|
||
|
||
#include "gcov-io.c"
|
||
|
||
struct function_list
|
||
{
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||
struct function_list *next; /* next function */
|
||
unsigned ident; /* function ident */
|
||
unsigned checksum; /* function checksum */
|
||
unsigned n_ctrs[GCOV_COUNTERS];/* number of counters. */
|
||
};
|
||
|
||
/* Counts information for a function. */
|
||
typedef struct counts_entry
|
||
{
|
||
/* We hash by */
|
||
unsigned ident;
|
||
unsigned ctr;
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||
|
||
/* Store */
|
||
unsigned checksum;
|
||
gcov_type *counts;
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||
struct gcov_ctr_summary summary;
|
||
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/* Workspace */
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struct counts_entry *chain;
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||
|
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} counts_entry_t;
|
||
|
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static struct function_list *functions_head = 0;
|
||
static struct function_list **functions_tail = &functions_head;
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static unsigned no_coverage = 0;
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|
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/* Cumulative counter information for whole program. */
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static unsigned prg_ctr_mask; /* Mask of counter types generated. */
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static unsigned prg_n_ctrs[GCOV_COUNTERS]; /* Total counters allocated. */
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|
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/* Counter information for current function. */
|
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static unsigned fn_ctr_mask; /* Mask of counters used. */
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static unsigned fn_n_ctrs[GCOV_COUNTERS]; /* Counters allocated. */
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static unsigned fn_b_ctrs[GCOV_COUNTERS]; /* Allocation base. */
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||
|
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/* Name of the output file for coverage output file. */
|
||
static char *bbg_file_name;
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static unsigned bbg_file_opened;
|
||
static int bbg_function_announced;
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||
|
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/* Name of the count data file. */
|
||
static char *da_file_name;
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||
|
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/* Hash table of count data. */
|
||
static htab_t counts_hash = NULL;
|
||
|
||
/* The names of the counter tables. */
|
||
static GTY(()) rtx ctr_labels[GCOV_COUNTERS];
|
||
|
||
/* The names of merge functions for counters. */
|
||
static const char *const ctr_merge_functions[GCOV_COUNTERS] = GCOV_MERGE_FUNCTIONS;
|
||
static const char *const ctr_names[GCOV_COUNTERS] = GCOV_COUNTER_NAMES;
|
||
|
||
/* Forward declarations. */
|
||
static hashval_t htab_counts_entry_hash (const void *);
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||
static int htab_counts_entry_eq (const void *, const void *);
|
||
static void htab_counts_entry_del (void *);
|
||
static void read_counts_file (void);
|
||
static unsigned compute_checksum (void);
|
||
static unsigned coverage_checksum_string (unsigned, const char *);
|
||
static tree build_fn_info_type (unsigned);
|
||
static tree build_fn_info_value (const struct function_list *, tree);
|
||
static tree build_ctr_info_type (void);
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||
static tree build_ctr_info_value (unsigned, tree);
|
||
static tree build_gcov_info (void);
|
||
static void create_coverage (void);
|
||
|
||
|
||
static hashval_t
|
||
htab_counts_entry_hash (const void *of)
|
||
{
|
||
const counts_entry_t *entry = of;
|
||
|
||
return entry->ident * GCOV_COUNTERS + entry->ctr;
|
||
}
|
||
|
||
static int
|
||
htab_counts_entry_eq (const void *of1, const void *of2)
|
||
{
|
||
const counts_entry_t *entry1 = of1;
|
||
const counts_entry_t *entry2 = of2;
|
||
|
||
return entry1->ident == entry2->ident && entry1->ctr == entry2->ctr;
|
||
}
|
||
|
||
static void
|
||
htab_counts_entry_del (void *of)
|
||
{
|
||
counts_entry_t *entry = of;
|
||
|
||
free (entry->counts);
|
||
free (entry);
|
||
}
|
||
|
||
/* Read in the counts file, if available. */
|
||
|
||
static void
|
||
read_counts_file (void)
|
||
{
|
||
gcov_unsigned_t fn_ident = 0;
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||
gcov_unsigned_t checksum = -1;
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||
counts_entry_t *summaried = NULL;
|
||
unsigned seen_summary = 0;
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||
gcov_unsigned_t tag;
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||
int is_error = 0;
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||
|
||
if (!gcov_open (da_file_name, 1))
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||
return;
|
||
|
||
if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC))
|
||
{
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||
warning ("`%s' is not a gcov data file", da_file_name);
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||
gcov_close ();
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||
return;
|
||
}
|
||
else if ((tag = gcov_read_unsigned ()) != GCOV_VERSION)
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{
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||
char v[4], e[4];
|
||
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||
GCOV_UNSIGNED2STRING (v, tag);
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GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
|
||
|
||
warning ("`%s' is version `%.4s', expected version `%.4s'",
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||
da_file_name, v, e);
|
||
gcov_close ();
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||
return;
|
||
}
|
||
|
||
/* Read and discard the stamp. */
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||
gcov_read_unsigned ();
|
||
|
||
counts_hash = htab_create (10,
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||
htab_counts_entry_hash, htab_counts_entry_eq,
|
||
htab_counts_entry_del);
|
||
while ((tag = gcov_read_unsigned ()))
|
||
{
|
||
gcov_unsigned_t length;
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||
gcov_position_t offset;
|
||
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||
length = gcov_read_unsigned ();
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||
offset = gcov_position ();
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||
if (tag == GCOV_TAG_FUNCTION)
|
||
{
|
||
fn_ident = gcov_read_unsigned ();
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||
checksum = gcov_read_unsigned ();
|
||
if (seen_summary)
|
||
{
|
||
/* We have already seen a summary, this means that this
|
||
new function begins a new set of program runs. We
|
||
must unlink the summaried chain. */
|
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counts_entry_t *entry, *chain;
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||
|
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for (entry = summaried; entry; entry = chain)
|
||
{
|
||
chain = entry->chain;
|
||
entry->chain = NULL;
|
||
}
|
||
summaried = NULL;
|
||
seen_summary = 0;
|
||
}
|
||
}
|
||
else if (tag == GCOV_TAG_PROGRAM_SUMMARY)
|
||
{
|
||
counts_entry_t *entry;
|
||
struct gcov_summary summary;
|
||
|
||
gcov_read_summary (&summary);
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||
seen_summary = 1;
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||
for (entry = summaried; entry; entry = entry->chain)
|
||
{
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||
struct gcov_ctr_summary *csum = &summary.ctrs[entry->ctr];
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||
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entry->summary.runs += csum->runs;
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entry->summary.sum_all += csum->sum_all;
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if (entry->summary.run_max < csum->run_max)
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entry->summary.run_max = csum->run_max;
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entry->summary.sum_max += csum->sum_max;
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}
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}
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else if (GCOV_TAG_IS_COUNTER (tag) && fn_ident)
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{
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counts_entry_t **slot, *entry, elt;
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unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);
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unsigned ix;
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elt.ident = fn_ident;
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elt.ctr = GCOV_COUNTER_FOR_TAG (tag);
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slot = (counts_entry_t **) htab_find_slot
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(counts_hash, &elt, INSERT);
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entry = *slot;
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if (!entry)
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{
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*slot = entry = xcalloc (1, sizeof (counts_entry_t));
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entry->ident = elt.ident;
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entry->ctr = elt.ctr;
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entry->checksum = checksum;
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entry->summary.num = n_counts;
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entry->counts = xcalloc (n_counts, sizeof (gcov_type));
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}
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else if (entry->checksum != checksum)
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{
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error ("coverage mismatch for function %u while reading execution counters.",
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fn_ident);
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error ("checksum is %x instead of %x", entry->checksum, checksum);
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htab_delete (counts_hash);
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break;
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}
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else if (entry->summary.num != n_counts)
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{
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error ("coverage mismatch for function %u while reading execution counters.",
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fn_ident);
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error ("number of counters is %d instead of %d", entry->summary.num, n_counts);
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htab_delete (counts_hash);
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break;
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}
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else if (elt.ctr >= GCOV_COUNTERS_SUMMABLE)
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{
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error ("cannot merge separate %s counters for function %u",
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ctr_names[elt.ctr], fn_ident);
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goto skip_merge;
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}
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if (elt.ctr < GCOV_COUNTERS_SUMMABLE
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/* This should always be true for a just allocated entry,
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and always false for an existing one. Check this way, in
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case the gcov file is corrupt. */
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&& (!entry->chain || summaried != entry))
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{
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entry->chain = summaried;
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summaried = entry;
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}
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for (ix = 0; ix != n_counts; ix++)
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entry->counts[ix] += gcov_read_counter ();
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skip_merge:;
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}
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gcov_sync (offset, length);
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if ((is_error = gcov_is_error ()))
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break;
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}
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if (!gcov_is_eof ())
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{
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error (is_error < 0 ? "`%s' has overflowed" : "`%s' is corrupted",
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da_file_name);
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htab_delete (counts_hash);
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}
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gcov_close ();
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}
|
||
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||
/* Returns the counters for a particular tag. */
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gcov_type *
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get_coverage_counts (unsigned counter, unsigned expected,
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const struct gcov_ctr_summary **summary)
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{
|
||
counts_entry_t *entry, elt;
|
||
gcov_unsigned_t checksum = -1;
|
||
|
||
/* No hash table, no counts. */
|
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if (!counts_hash)
|
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{
|
||
static int warned = 0;
|
||
|
||
if (!warned++)
|
||
inform ("file %s not found, execution counts assumed to be zero",
|
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da_file_name);
|
||
return NULL;
|
||
}
|
||
|
||
elt.ident = current_function_funcdef_no + 1;
|
||
elt.ctr = counter;
|
||
entry = htab_find (counts_hash, &elt);
|
||
if (!entry)
|
||
{
|
||
warning ("no coverage for function '%s' found.", IDENTIFIER_POINTER
|
||
(DECL_ASSEMBLER_NAME (current_function_decl)));
|
||
return 0;
|
||
}
|
||
|
||
checksum = compute_checksum ();
|
||
if (entry->checksum != checksum)
|
||
{
|
||
error ("coverage mismatch for function '%s' while reading counter '%s'.",
|
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IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)),
|
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ctr_names[counter]);
|
||
error ("checksum is %x instead of %x", entry->checksum, checksum);
|
||
return 0;
|
||
}
|
||
else if (entry->summary.num != expected)
|
||
{
|
||
error ("coverage mismatch for function '%s' while reading counter '%s'.",
|
||
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)),
|
||
ctr_names[counter]);
|
||
error ("number of counters is %d instead of %d", entry->summary.num, expected);
|
||
return 0;
|
||
}
|
||
|
||
if (summary)
|
||
*summary = &entry->summary;
|
||
|
||
return entry->counts;
|
||
}
|
||
|
||
/* Allocate NUM counters of type COUNTER. Returns nonzero if the
|
||
allocation succeeded. */
|
||
|
||
int
|
||
coverage_counter_alloc (unsigned counter, unsigned num)
|
||
{
|
||
if (no_coverage)
|
||
return 0;
|
||
|
||
if (!num)
|
||
return 1;
|
||
|
||
if (!ctr_labels[counter])
|
||
{
|
||
/* Generate and save a copy of this so it can be shared. */
|
||
char buf[20];
|
||
|
||
ASM_GENERATE_INTERNAL_LABEL (buf, "LPBX", counter + 1);
|
||
ctr_labels[counter] = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (buf));
|
||
SYMBOL_REF_FLAGS (ctr_labels[counter]) = SYMBOL_FLAG_LOCAL;
|
||
}
|
||
fn_b_ctrs[counter] = fn_n_ctrs[counter];
|
||
fn_n_ctrs[counter] += num;
|
||
fn_ctr_mask |= 1 << counter;
|
||
return 1;
|
||
}
|
||
|
||
/* Generate a MEM rtl to access COUNTER NO. */
|
||
|
||
rtx
|
||
coverage_counter_ref (unsigned counter, unsigned no)
|
||
{
|
||
unsigned gcov_size = tree_low_cst (TYPE_SIZE (GCOV_TYPE_NODE), 1);
|
||
enum machine_mode mode = mode_for_size (gcov_size, MODE_INT, 0);
|
||
rtx ref;
|
||
|
||
if (no >= fn_n_ctrs[counter] - fn_b_ctrs[counter])
|
||
abort ();
|
||
no += prg_n_ctrs[counter] + fn_b_ctrs[counter];
|
||
ref = plus_constant (ctr_labels[counter], gcov_size / BITS_PER_UNIT * no);
|
||
ref = gen_rtx_MEM (mode, ref);
|
||
set_mem_alias_set (ref, new_alias_set ());
|
||
MEM_NOTRAP_P (ref) = 1;
|
||
|
||
return ref;
|
||
}
|
||
|
||
/* Generate a checksum for a string. CHKSUM is the current
|
||
checksum. */
|
||
|
||
static unsigned
|
||
coverage_checksum_string (unsigned chksum, const char *string)
|
||
{
|
||
int i;
|
||
char *dup = NULL;
|
||
|
||
/* Look for everything that looks if it were produced by
|
||
get_file_function_name_long and zero out the second part
|
||
that may result from flag_random_seed. This is not critical
|
||
as the checksums are used only for sanity checking. */
|
||
for (i = 0; string[i]; i++)
|
||
{
|
||
if (!strncmp (string + i, "_GLOBAL__", 9))
|
||
for (i = i + 9; string[i]; i++)
|
||
if (string[i]=='_')
|
||
{
|
||
int y;
|
||
unsigned seed;
|
||
|
||
for (y = 1; y < 9; y++)
|
||
if (!(string[i + y] >= '0' && string[i + y] <= '9')
|
||
&& !(string[i + y] >= 'A' && string[i + y] <= 'F'))
|
||
break;
|
||
if (y != 9 || string[i + 9] != '_')
|
||
continue;
|
||
for (y = 10; y < 18; y++)
|
||
if (!(string[i + y] >= '0' && string[i + y] <= '9')
|
||
&& !(string[i + y] >= 'A' && string[i + y] <= 'F'))
|
||
break;
|
||
if (y != 18)
|
||
continue;
|
||
if (!sscanf (string + i + 10, "%X", &seed))
|
||
abort ();
|
||
if (seed != crc32_string (0, flag_random_seed))
|
||
continue;
|
||
string = dup = xstrdup (string);
|
||
for (y = 10; y < 18; y++)
|
||
dup[i + y] = '0';
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
|
||
chksum = crc32_string (chksum, string);
|
||
if (dup)
|
||
free (dup);
|
||
|
||
return chksum;
|
||
}
|
||
|
||
/* Compute checksum for the current function. We generate a CRC32. */
|
||
|
||
static unsigned
|
||
compute_checksum (void)
|
||
{
|
||
unsigned chksum = DECL_SOURCE_LINE (current_function_decl);
|
||
|
||
chksum = coverage_checksum_string (chksum,
|
||
DECL_SOURCE_FILE (current_function_decl));
|
||
chksum = coverage_checksum_string
|
||
(chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)));
|
||
|
||
return chksum;
|
||
}
|
||
|
||
/* Begin output to the graph file for the current function.
|
||
Opens the output file, if not already done. Writes the
|
||
function header, if not already done. Returns nonzero if data
|
||
should be output. */
|
||
|
||
int
|
||
coverage_begin_output (void)
|
||
{
|
||
if (no_coverage)
|
||
return 0;
|
||
|
||
if (!bbg_function_announced)
|
||
{
|
||
const char *file = DECL_SOURCE_FILE (current_function_decl);
|
||
unsigned line = DECL_SOURCE_LINE (current_function_decl);
|
||
unsigned long offset;
|
||
|
||
if (!bbg_file_opened)
|
||
{
|
||
if (!gcov_open (bbg_file_name, -1))
|
||
error ("cannot open %s", bbg_file_name);
|
||
else
|
||
{
|
||
gcov_write_unsigned (GCOV_NOTE_MAGIC);
|
||
gcov_write_unsigned (GCOV_VERSION);
|
||
gcov_write_unsigned (local_tick);
|
||
}
|
||
bbg_file_opened = 1;
|
||
}
|
||
|
||
/* Announce function */
|
||
offset = gcov_write_tag (GCOV_TAG_FUNCTION);
|
||
gcov_write_unsigned (current_function_funcdef_no + 1);
|
||
gcov_write_unsigned (compute_checksum ());
|
||
gcov_write_string (IDENTIFIER_POINTER
|
||
(DECL_ASSEMBLER_NAME (current_function_decl)));
|
||
gcov_write_string (file);
|
||
gcov_write_unsigned (line);
|
||
gcov_write_length (offset);
|
||
|
||
bbg_function_announced = 1;
|
||
}
|
||
return !gcov_is_error ();
|
||
}
|
||
|
||
/* Finish coverage data for the current function. Verify no output
|
||
error has occurred. Save function coverage counts. */
|
||
|
||
void
|
||
coverage_end_function (void)
|
||
{
|
||
unsigned i;
|
||
|
||
if (bbg_file_opened > 1 && gcov_is_error ())
|
||
{
|
||
warning ("error writing `%s'", bbg_file_name);
|
||
bbg_file_opened = -1;
|
||
}
|
||
|
||
if (fn_ctr_mask)
|
||
{
|
||
struct function_list *item;
|
||
|
||
item = xmalloc (sizeof (struct function_list));
|
||
|
||
*functions_tail = item;
|
||
functions_tail = &item->next;
|
||
|
||
item->next = 0;
|
||
item->ident = current_function_funcdef_no + 1;
|
||
item->checksum = compute_checksum ();
|
||
for (i = 0; i != GCOV_COUNTERS; i++)
|
||
{
|
||
item->n_ctrs[i] = fn_n_ctrs[i];
|
||
prg_n_ctrs[i] += fn_n_ctrs[i];
|
||
fn_n_ctrs[i] = fn_b_ctrs[i] = 0;
|
||
}
|
||
prg_ctr_mask |= fn_ctr_mask;
|
||
fn_ctr_mask = 0;
|
||
}
|
||
bbg_function_announced = 0;
|
||
}
|
||
|
||
/* Creates the gcov_fn_info RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_fn_info_type (unsigned int counters)
|
||
{
|
||
tree type = (*lang_hooks.types.make_type) (RECORD_TYPE);
|
||
tree field, fields;
|
||
tree array_type;
|
||
|
||
/* ident */
|
||
fields = build_decl (FIELD_DECL, NULL_TREE, unsigned_intSI_type_node);
|
||
|
||
/* checksum */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, unsigned_intSI_type_node);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
array_type = build_index_type (build_int_2 (counters - 1, 0));
|
||
array_type = build_array_type (unsigned_type_node, array_type);
|
||
|
||
/* counters */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, array_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
finish_builtin_struct (type, "__gcov_fn_info", fields, NULL_TREE);
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Creates a CONSTRUCTOR for a gcov_fn_info. FUNCTION is
|
||
the function being processed and TYPE is the gcov_fn_info
|
||
RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_fn_info_value (const struct function_list *function, tree type)
|
||
{
|
||
tree value = NULL_TREE;
|
||
tree fields = TYPE_FIELDS (type);
|
||
unsigned ix;
|
||
tree array_value = NULL_TREE;
|
||
|
||
/* ident */
|
||
value = tree_cons (fields,
|
||
convert (unsigned_intSI_type_node,
|
||
build_int_2 (function->ident, 0)),
|
||
value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
/* checksum */
|
||
value = tree_cons (fields,
|
||
convert (unsigned_intSI_type_node,
|
||
build_int_2 (function->checksum, 0)),
|
||
value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
/* counters */
|
||
for (ix = 0; ix != GCOV_COUNTERS; ix++)
|
||
if (prg_ctr_mask & (1 << ix))
|
||
{
|
||
tree counters = convert (unsigned_type_node,
|
||
build_int_2 (function->n_ctrs[ix], 0));
|
||
|
||
array_value = tree_cons (NULL_TREE, counters, array_value);
|
||
}
|
||
|
||
array_value = build_constructor (TREE_TYPE (fields), nreverse (array_value));
|
||
value = tree_cons (fields, array_value, value);
|
||
|
||
value = build_constructor (type, nreverse (value));
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Creates the gcov_ctr_info RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_ctr_info_type (void)
|
||
{
|
||
tree type = (*lang_hooks.types.make_type) (RECORD_TYPE);
|
||
tree field, fields = NULL_TREE;
|
||
tree gcov_ptr_type = build_pointer_type (GCOV_TYPE_NODE);
|
||
tree gcov_merge_fn_type;
|
||
|
||
/* counters */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, unsigned_intSI_type_node);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
/* values */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, gcov_ptr_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
/* merge */
|
||
gcov_merge_fn_type =
|
||
build_function_type_list (void_type_node,
|
||
gcov_ptr_type, unsigned_type_node,
|
||
NULL_TREE);
|
||
field = build_decl (FIELD_DECL, NULL_TREE,
|
||
build_pointer_type (gcov_merge_fn_type));
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
finish_builtin_struct (type, "__gcov_ctr_info", fields, NULL_TREE);
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Creates a CONSTRUCTOR for a gcov_ctr_info. COUNTER is
|
||
the counter being processed and TYPE is the gcov_ctr_info
|
||
RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_ctr_info_value (unsigned int counter, tree type)
|
||
{
|
||
tree value = NULL_TREE;
|
||
tree fields = TYPE_FIELDS (type);
|
||
tree fn;
|
||
|
||
/* counters */
|
||
value = tree_cons (fields,
|
||
convert (unsigned_intSI_type_node,
|
||
build_int_2 (prg_n_ctrs[counter], 0)),
|
||
value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
if (prg_n_ctrs[counter])
|
||
{
|
||
tree array_type, array;
|
||
|
||
array_type = build_index_type (build_int_2 (prg_n_ctrs[counter] - 1, 0));
|
||
array_type = build_array_type (TREE_TYPE (TREE_TYPE (fields)),
|
||
array_type);
|
||
|
||
array = build_decl (VAR_DECL, NULL_TREE, array_type);
|
||
TREE_STATIC (array) = 1;
|
||
DECL_NAME (array) = get_identifier (XSTR (ctr_labels[counter], 0));
|
||
assemble_variable (array, 0, 0, 0);
|
||
|
||
value = tree_cons (fields,
|
||
build1 (ADDR_EXPR, TREE_TYPE (fields), array),
|
||
value);
|
||
}
|
||
else
|
||
value = tree_cons (fields, null_pointer_node, value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
fn = build_decl (FUNCTION_DECL,
|
||
get_identifier (ctr_merge_functions[counter]),
|
||
TREE_TYPE (TREE_TYPE (fields)));
|
||
DECL_EXTERNAL (fn) = 1;
|
||
TREE_PUBLIC (fn) = 1;
|
||
DECL_ARTIFICIAL (fn) = 1;
|
||
TREE_NOTHROW (fn) = 1;
|
||
value = tree_cons (fields,
|
||
build1 (ADDR_EXPR, TREE_TYPE (fields), fn),
|
||
value);
|
||
|
||
value = build_constructor (type, nreverse (value));
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Creates the gcov_info RECORD_TYPE and initializer for it. Returns a
|
||
CONSTRUCTOR. */
|
||
|
||
static tree
|
||
build_gcov_info (void)
|
||
{
|
||
unsigned n_ctr_types, ix;
|
||
tree type, const_type;
|
||
tree fn_info_type, fn_info_value = NULL_TREE;
|
||
tree fn_info_ptr_type;
|
||
tree ctr_info_type, ctr_info_ary_type, ctr_info_value = NULL_TREE;
|
||
tree field, fields = NULL_TREE;
|
||
tree value = NULL_TREE;
|
||
tree filename_string;
|
||
char *filename;
|
||
int filename_len;
|
||
unsigned n_fns;
|
||
const struct function_list *fn;
|
||
tree string_type;
|
||
|
||
/* Count the number of active counters. */
|
||
for (n_ctr_types = 0, ix = 0; ix != GCOV_COUNTERS; ix++)
|
||
if (prg_ctr_mask & (1 << ix))
|
||
n_ctr_types++;
|
||
|
||
type = (*lang_hooks.types.make_type) (RECORD_TYPE);
|
||
const_type = build_qualified_type (type, TYPE_QUAL_CONST);
|
||
|
||
/* Version ident */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, unsigned_intSI_type_node);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, convert (unsigned_intSI_type_node,
|
||
build_int_2 (GCOV_VERSION, 0)),
|
||
value);
|
||
|
||
/* next -- NULL */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, build_pointer_type (const_type));
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, null_pointer_node, value);
|
||
|
||
/* stamp */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, unsigned_intSI_type_node);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, convert (unsigned_intSI_type_node,
|
||
build_int_2 (local_tick, 0)),
|
||
value);
|
||
|
||
/* Filename */
|
||
string_type = build_pointer_type (build_qualified_type (char_type_node,
|
||
TYPE_QUAL_CONST));
|
||
field = build_decl (FIELD_DECL, NULL_TREE, string_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
filename = getpwd ();
|
||
filename = (filename && da_file_name[0] != '/'
|
||
? concat (filename, "/", da_file_name, NULL)
|
||
: da_file_name);
|
||
filename_len = strlen (filename);
|
||
filename_string = build_string (filename_len + 1, filename);
|
||
if (filename != da_file_name)
|
||
free (filename);
|
||
TREE_TYPE (filename_string) =
|
||
build_array_type (char_type_node,
|
||
build_index_type (build_int_2 (filename_len, 0)));
|
||
value = tree_cons (field, build1 (ADDR_EXPR, string_type, filename_string),
|
||
value);
|
||
|
||
/* Build the fn_info type and initializer. */
|
||
fn_info_type = build_fn_info_type (n_ctr_types);
|
||
fn_info_ptr_type = build_pointer_type (build_qualified_type
|
||
(fn_info_type, TYPE_QUAL_CONST));
|
||
for (fn = functions_head, n_fns = 0; fn; fn = fn->next, n_fns++)
|
||
fn_info_value = tree_cons (NULL_TREE,
|
||
build_fn_info_value (fn, fn_info_type),
|
||
fn_info_value);
|
||
if (n_fns)
|
||
{
|
||
tree array_type;
|
||
|
||
array_type = build_index_type (build_int_2 (n_fns - 1, 0));
|
||
array_type = build_array_type (fn_info_type, array_type);
|
||
|
||
fn_info_value = build_constructor (array_type, nreverse (fn_info_value));
|
||
fn_info_value = build1 (ADDR_EXPR, fn_info_ptr_type, fn_info_value);
|
||
}
|
||
else
|
||
fn_info_value = null_pointer_node;
|
||
|
||
/* number of functions */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, unsigned_type_node);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field,
|
||
convert (unsigned_type_node, build_int_2 (n_fns, 0)),
|
||
value);
|
||
|
||
/* fn_info table */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, fn_info_ptr_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, fn_info_value, value);
|
||
|
||
/* counter_mask */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, unsigned_type_node);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field,
|
||
convert (unsigned_type_node,
|
||
build_int_2 (prg_ctr_mask, 0)),
|
||
value);
|
||
|
||
/* counters */
|
||
ctr_info_type = build_ctr_info_type ();
|
||
ctr_info_ary_type = build_index_type (build_int_2 (n_ctr_types, 0));
|
||
ctr_info_ary_type = build_array_type (ctr_info_type, ctr_info_ary_type);
|
||
for (ix = 0; ix != GCOV_COUNTERS; ix++)
|
||
if (prg_ctr_mask & (1 << ix))
|
||
ctr_info_value = tree_cons (NULL_TREE,
|
||
build_ctr_info_value (ix, ctr_info_type),
|
||
ctr_info_value);
|
||
ctr_info_value = build_constructor (ctr_info_ary_type,
|
||
nreverse (ctr_info_value));
|
||
|
||
field = build_decl (FIELD_DECL, NULL_TREE, ctr_info_ary_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, ctr_info_value, value);
|
||
|
||
finish_builtin_struct (type, "__gcov_info", fields, NULL_TREE);
|
||
|
||
value = build_constructor (type, nreverse (value));
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Write out the structure which libgcov uses to locate all the
|
||
counters. The structures used here must match those defined in
|
||
gcov-io.h. Write out the constructor to call __gcov_init. */
|
||
|
||
static void
|
||
create_coverage (void)
|
||
{
|
||
tree gcov_info, gcov_info_value;
|
||
char name[20];
|
||
char *ctor_name;
|
||
tree ctor;
|
||
rtx gcov_info_address;
|
||
|
||
no_coverage = 1; /* Disable any further coverage. */
|
||
|
||
if (!prg_ctr_mask)
|
||
return;
|
||
|
||
gcov_info_value = build_gcov_info ();
|
||
|
||
gcov_info = build_decl (VAR_DECL, NULL_TREE, TREE_TYPE (gcov_info_value));
|
||
DECL_INITIAL (gcov_info) = gcov_info_value;
|
||
|
||
TREE_STATIC (gcov_info) = 1;
|
||
ASM_GENERATE_INTERNAL_LABEL (name, "LPBX", 0);
|
||
DECL_NAME (gcov_info) = get_identifier (name);
|
||
|
||
/* Build structure. */
|
||
assemble_variable (gcov_info, 0, 0, 0);
|
||
|
||
/* Build the constructor function to invoke __gcov_init. */
|
||
ctor_name = concat (IDENTIFIER_POINTER (get_file_function_name ('I')),
|
||
"_GCOV", NULL);
|
||
ctor = build_decl (FUNCTION_DECL, get_identifier (ctor_name),
|
||
build_function_type (void_type_node, NULL_TREE));
|
||
free (ctor_name);
|
||
DECL_EXTERNAL (ctor) = 0;
|
||
|
||
/* It can be a static function as long as collect2 does not have
|
||
to scan the object file to find its ctor/dtor routine. */
|
||
TREE_PUBLIC (ctor) = ! targetm.have_ctors_dtors;
|
||
TREE_USED (ctor) = 1;
|
||
DECL_RESULT (ctor) = build_decl (RESULT_DECL, NULL_TREE, void_type_node);
|
||
DECL_UNINLINABLE (ctor) = 1;
|
||
|
||
ctor = (*lang_hooks.decls.pushdecl) (ctor);
|
||
rest_of_decl_compilation (ctor, 0, 1, 0);
|
||
announce_function (ctor);
|
||
current_function_decl = ctor;
|
||
make_decl_rtl (ctor, NULL);
|
||
init_function_start (ctor);
|
||
expand_function_start (ctor, 0);
|
||
/* Actually generate the code to call __gcov_init. */
|
||
gcov_info_address = force_reg (Pmode, XEXP (DECL_RTL (gcov_info), 0));
|
||
emit_library_call (gcov_init_libfunc, LCT_NORMAL, VOIDmode, 1,
|
||
gcov_info_address, Pmode);
|
||
|
||
expand_function_end ();
|
||
/* Create a dummy BLOCK. */
|
||
DECL_INITIAL (ctor) = make_node (BLOCK);
|
||
TREE_USED (DECL_INITIAL (ctor)) = 1;
|
||
|
||
rest_of_compilation (ctor);
|
||
|
||
if (! quiet_flag)
|
||
fflush (asm_out_file);
|
||
current_function_decl = NULL_TREE;
|
||
|
||
if (targetm.have_ctors_dtors)
|
||
(* targetm.asm_out.constructor) (XEXP (DECL_RTL (ctor), 0),
|
||
DEFAULT_INIT_PRIORITY);
|
||
}
|
||
|
||
/* Perform file-level initialization. Read in data file, generate name
|
||
of graph file. */
|
||
|
||
void
|
||
coverage_init (const char *filename)
|
||
{
|
||
int len = strlen (filename);
|
||
|
||
/* Name of da file. */
|
||
da_file_name = xmalloc (len + strlen (GCOV_DATA_SUFFIX) + 1);
|
||
strcpy (da_file_name, filename);
|
||
strcat (da_file_name, GCOV_DATA_SUFFIX);
|
||
|
||
/* Name of bbg file. */
|
||
bbg_file_name = xmalloc (len + strlen (GCOV_NOTE_SUFFIX) + 1);
|
||
strcpy (bbg_file_name, filename);
|
||
strcat (bbg_file_name, GCOV_NOTE_SUFFIX);
|
||
|
||
read_counts_file ();
|
||
}
|
||
|
||
/* Performs file-level cleanup. Close graph file, generate coverage
|
||
variables and constructor. */
|
||
|
||
void
|
||
coverage_finish (void)
|
||
{
|
||
create_coverage ();
|
||
if (bbg_file_opened)
|
||
{
|
||
int error = gcov_close ();
|
||
|
||
if (error)
|
||
unlink (bbg_file_name);
|
||
if (!local_tick)
|
||
/* Only remove the da file, if we cannot stamp it. If we can
|
||
stamp it, libgcov will DTRT. */
|
||
unlink (da_file_name);
|
||
}
|
||
}
|
||
|
||
#include "gt-coverage.h"
|