gcc/libgcc/gcov.h

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/* GCOV interface routines.
2021-01-04 10:26:59 +01:00
Copyright (C) 2017-2021 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_GCOV_H
#define GCC_GCOV_H
gcov: Add __gcov_info_to_gdca() Add __gcov_info_to_gcda() to libgcov to get the gcda data for a gcda info in a freestanding environment. It is intended to be used with the -fprofile-info-section option. A crude test program which doesn't use a linker script is (use "gcc -coverage -fprofile-info-section -lgcov test.c" to compile it): #include <gcov.h> #include <stdio.h> #include <stdlib.h> extern const struct gcov_info *my_info; static void filename (const char *f, void *arg) { printf("filename: %s\n", f); } static void dump (const void *d, unsigned n, void *arg) { const unsigned char *c = d; for (unsigned i = 0; i < n; ++i) printf ("%02x", c[i]); } static void * allocate (unsigned length, void *arg) { return malloc (length); } int main() { __asm__ volatile (".set my_info, .LPBX2"); __gcov_info_to_gcda (my_info, filename, dump, allocate, NULL); return 0; } With this patch, <stdint.h> is included in libgcov-driver.c even if inhibit_libc is defined. This header file should be also available for freestanding environments. If this is not the case, then we have to define intptr_t somehow. The patch removes one use of memset() which makes the <string.h> include superfluous. gcc/ * gcov-io.h (gcov_write): Declare. * gcov-io.c (gcov_write): New. (gcov_write_counter): Remove. (gcov_write_tag_length): Likewise. (gcov_write_summary): Replace gcov_write_tag_length() with calls to gcov_write_unsigned(). * doc/invoke.texi (fprofile-info-section): Mention __gcov_info_to_gdca(). gcc/testsuite/ * gcc.dg/gcov-info-to-gcda.c: New test. libgcc/ * Makefile.in (LIBGCOV_DRIVER): Add _gcov_info_to_gcda. * gcov.h (gcov_info): Declare. (__gcov_info_to_gdca): Likewise. * libgcov.h (gcov_write_counter): Remove. (gcov_write_tag_length): Likewise. * libgcov-driver.c (#include <stdint.h>): New. (#include <string.h>): Remove. (NEED_L_GCOV): Conditionally define. (NEED_L_GCOV_INFO_TO_GCDA): Likewise. (are_all_counters_zero): New. (gcov_dump_handler): Likewise. (gcov_allocate_handler): Likewise. (dump_unsigned): Likewise. (dump_counter): Likewise. (write_topn_counters): Add dump_fn, allocate_fn, and arg parameters. Use dump_unsigned() and dump_counter(). (write_one_data): Add dump_fn, allocate_fn, and arg parameters. Use dump_unsigned(), dump_counter(), and are_all_counters_zero(). (__gcov_info_to_gcda): New.
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struct gcov_info;
/* Set all counters to zero. */
extern void __gcov_reset (void);
/* Write profile information to a file. */
extern void __gcov_dump (void);
gcov: Add __gcov_info_to_gdca() Add __gcov_info_to_gcda() to libgcov to get the gcda data for a gcda info in a freestanding environment. It is intended to be used with the -fprofile-info-section option. A crude test program which doesn't use a linker script is (use "gcc -coverage -fprofile-info-section -lgcov test.c" to compile it): #include <gcov.h> #include <stdio.h> #include <stdlib.h> extern const struct gcov_info *my_info; static void filename (const char *f, void *arg) { printf("filename: %s\n", f); } static void dump (const void *d, unsigned n, void *arg) { const unsigned char *c = d; for (unsigned i = 0; i < n; ++i) printf ("%02x", c[i]); } static void * allocate (unsigned length, void *arg) { return malloc (length); } int main() { __asm__ volatile (".set my_info, .LPBX2"); __gcov_info_to_gcda (my_info, filename, dump, allocate, NULL); return 0; } With this patch, <stdint.h> is included in libgcov-driver.c even if inhibit_libc is defined. This header file should be also available for freestanding environments. If this is not the case, then we have to define intptr_t somehow. The patch removes one use of memset() which makes the <string.h> include superfluous. gcc/ * gcov-io.h (gcov_write): Declare. * gcov-io.c (gcov_write): New. (gcov_write_counter): Remove. (gcov_write_tag_length): Likewise. (gcov_write_summary): Replace gcov_write_tag_length() with calls to gcov_write_unsigned(). * doc/invoke.texi (fprofile-info-section): Mention __gcov_info_to_gdca(). gcc/testsuite/ * gcc.dg/gcov-info-to-gcda.c: New test. libgcc/ * Makefile.in (LIBGCOV_DRIVER): Add _gcov_info_to_gcda. * gcov.h (gcov_info): Declare. (__gcov_info_to_gdca): Likewise. * libgcov.h (gcov_write_counter): Remove. (gcov_write_tag_length): Likewise. * libgcov-driver.c (#include <stdint.h>): New. (#include <string.h>): Remove. (NEED_L_GCOV): Conditionally define. (NEED_L_GCOV_INFO_TO_GCDA): Likewise. (are_all_counters_zero): New. (gcov_dump_handler): Likewise. (gcov_allocate_handler): Likewise. (dump_unsigned): Likewise. (dump_counter): Likewise. (write_topn_counters): Add dump_fn, allocate_fn, and arg parameters. Use dump_unsigned() and dump_counter(). (write_one_data): Add dump_fn, allocate_fn, and arg parameters. Use dump_unsigned(), dump_counter(), and are_all_counters_zero(). (__gcov_info_to_gcda): New.
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/* Convert the gcov information referenced by INFO to a gcda data stream.
The FILENAME_FN callback is called exactly once with the filename associated
with the gcov information. The filename may be NULL. Afterwards, the
DUMP_FN callback is subsequently called with chunks (the begin and length of
the chunk are passed as the first two callback parameters) of the gcda data
stream. The ALLOCATE_FN callback shall allocate memory with a size in
characters specified by the first callback parameter. The ARG parameter is
a user-provided argument passed as the last argument to the callback
functions. */
extern void
__gcov_info_to_gcda (const struct gcov_info *__info,
void (*__filename_fn) (const char *, void *),
void (*__dump_fn) (const void *, unsigned, void *),
void *(*__allocate_fn) (unsigned, void *),
void *__arg);
#endif /* GCC_GCOV_H */