| /* Header file for libgcov-*.c. |
| Copyright (C) 1996-2014 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_LIBGCOV_H |
| #define GCC_LIBGCOV_H |
| |
| #ifndef __KERNEL__ |
| /* work around the poisoned malloc/calloc in system.h. */ |
| #ifndef xmalloc |
| #define xmalloc malloc |
| #endif |
| #ifndef xcalloc |
| #define xcalloc calloc |
| #endif |
| #ifndef xrealloc |
| #define xrealloc realloc |
| #endif |
| #ifndef xfree |
| #define xfree free |
| #endif |
| #else /* __KERNEL__ */ |
| #include "libgcov-kernel.h" |
| #endif /* __KERNEL__ */ |
| |
| #ifndef IN_GCOV_TOOL |
| /* About the target. */ |
| /* This path will be used by libgcov runtime. */ |
| |
| #ifndef __KERNEL__ |
| #include "tconfig.h" |
| #include "tsystem.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "libgcc_tm.h" |
| #endif /* __KERNEL__ */ |
| |
| #undef FUNC_ID_WIDTH |
| #undef FUNC_ID_MASK |
| |
| #if BITS_PER_UNIT == 8 |
| typedef unsigned gcov_unsigned_t __attribute__ ((mode (SI))); |
| typedef unsigned gcov_position_t __attribute__ ((mode (SI))); |
| #if LONG_LONG_TYPE_SIZE > 32 |
| typedef signed gcov_type __attribute__ ((mode (DI))); |
| typedef unsigned gcov_type_unsigned __attribute__ ((mode (DI))); |
| #define FUNC_ID_WIDTH 32 |
| #define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) |
| #else |
| typedef signed gcov_type __attribute__ ((mode (SI))); |
| typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI))); |
| #define FUNC_ID_WIDTH 16 |
| #define FUNC_ID_MASK ((1 << FUNC_ID_WIDTH) - 1) |
| #endif |
| #else /* BITS_PER_UNIT != 8 */ |
| #if BITS_PER_UNIT == 16 |
| typedef unsigned gcov_unsigned_t __attribute__ ((mode (HI))); |
| typedef unsigned gcov_position_t __attribute__ ((mode (HI))); |
| #if LONG_LONG_TYPE_SIZE > 32 |
| typedef signed gcov_type __attribute__ ((mode (SI))); |
| typedef unsigned gcov_type_unsigned __attribute__ ((mode (SI))); |
| #define FUNC_ID_WIDTH 32 |
| #define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) |
| #else |
| typedef signed gcov_type __attribute__ ((mode (HI))); |
| typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI))); |
| #define FUNC_ID_WIDTH 16 |
| #define FUNC_ID_MASK ((1 << FUNC_ID_WIDTH) - 1) |
| #endif |
| #else /* BITS_PER_UNIT != 16 */ |
| typedef unsigned gcov_unsigned_t __attribute__ ((mode (QI))); |
| typedef unsigned gcov_position_t __attribute__ ((mode (QI))); |
| #if LONG_LONG_TYPE_SIZE > 32 |
| typedef signed gcov_type __attribute__ ((mode (HI))); |
| typedef unsigned gcov_type_unsigned __attribute__ ((mode (HI))); |
| #define FUNC_ID_WIDTH 32 |
| #define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) |
| #else |
| typedef signed gcov_type __attribute__ ((mode (QI))); |
| typedef unsigned gcov_type_unsigned __attribute__ ((mode (QI))); |
| #define FUNC_ID_WIDTH 16 |
| #define FUNC_ID_MASK ((1 << FUNC_ID_WIDTH) - 1) |
| #endif |
| #endif /* BITS_PER_UNIT == 16 */ |
| #endif /* BITS_PER_UNIT == 8 */ |
| |
| #if LONG_LONG_TYPE_SIZE > 32 |
| #define GCOV_TYPE_ATOMIC_FETCH_ADD_FN __atomic_fetch_add_8 |
| #define GCOV_TYPE_ATOMIC_FETCH_ADD BUILT_IN_ATOMIC_FETCH_ADD_8 |
| #else |
| #define GCOV_TYPE_ATOMIC_FETCH_ADD_FN __atomic_fetch_add_4 |
| #define GCOV_TYPE_ATOMIC_FETCH_ADD BUILT_IN_ATOMIC_FETCH_ADD_4 |
| #endif |
| |
| #if defined (TARGET_POSIX_IO) |
| #define GCOV_LOCKED 1 |
| #else |
| #define GCOV_LOCKED 0 |
| #endif |
| |
| #else /* IN_GCOV_TOOL */ |
| /* About the host. */ |
| /* This path will be compiled for the host and linked into |
| gcov-tool binary. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| |
| typedef unsigned gcov_unsigned_t; |
| typedef unsigned gcov_position_t; |
| /* gcov_type is typedef'd elsewhere for the compiler */ |
| #if defined (HOST_HAS_F_SETLKW) |
| #define GCOV_LOCKED 1 |
| #else |
| #define GCOV_LOCKED 0 |
| #endif |
| |
| #define FUNC_ID_WIDTH 32 |
| #define FUNC_ID_MASK ((1ll << FUNC_ID_WIDTH) - 1) |
| |
| /* Some Macros specific to gcov-tool. */ |
| |
| #define L_gcov 1 |
| #define L_gcov_merge_add 1 |
| #define L_gcov_merge_single 1 |
| #define L_gcov_merge_delta 1 |
| #define L_gcov_merge_ior 1 |
| #define L_gcov_merge_time_profile 1 |
| #define L_gcov_merge_icall_topn 1 |
| #define L_gcov_merge_dc 1 |
| |
| /* Make certian internal functions/variables in libgcov available for |
| gcov-tool access. */ |
| #define GCOV_TOOL_LINKAGE |
| |
| extern gcov_type gcov_read_counter_mem (); |
| extern unsigned gcov_get_merge_weight (); |
| |
| #endif /* !IN_GCOV_TOOL */ |
| |
| #undef EXTRACT_MODULE_ID_FROM_GLOBAL_ID |
| #undef EXTRACT_FUNC_ID_FROM_GLOBAL_ID |
| #undef GEN_FUNC_GLOBAL_ID |
| #define EXTRACT_MODULE_ID_FROM_GLOBAL_ID(gid) \ |
| (gcov_unsigned_t)(((gid) >> FUNC_ID_WIDTH) & FUNC_ID_MASK) |
| #define EXTRACT_FUNC_ID_FROM_GLOBAL_ID(gid) \ |
| (gcov_unsigned_t)((gid) & FUNC_ID_MASK) |
| #define GEN_FUNC_GLOBAL_ID(m,f) ((((gcov_type) (m)) << FUNC_ID_WIDTH) | (f)) |
| |
| #if defined(inhibit_libc) |
| #define IN_LIBGCOV (-1) |
| #else |
| #define IN_LIBGCOV 1 |
| #if defined(L_gcov) |
| #define GCOV_LINKAGE /* nothing */ |
| #endif |
| #endif |
| |
| /* In libgcov we need these functions to be extern, so prefix them with |
| __gcov. In libgcov they must also be hidden so that the instance in |
| the executable is not also used in a DSO. */ |
| #define gcov_var __gcov_var |
| #define gcov_open __gcov_open |
| #define gcov_close __gcov_close |
| #define gcov_write_tag_length __gcov_write_tag_length |
| #define gcov_position __gcov_position |
| #define gcov_seek __gcov_seek |
| #define gcov_rewrite __gcov_rewrite |
| #define gcov_truncate __gcov_truncate |
| #define gcov_is_error __gcov_is_error |
| #define gcov_write_unsigned __gcov_write_unsigned |
| #define gcov_write_counter __gcov_write_counter |
| #define gcov_write_summary __gcov_write_summary |
| #define gcov_write_module_info __gcov_write_module_info |
| #define gcov_read_unsigned __gcov_read_unsigned |
| #define gcov_read_counter __gcov_read_counter |
| #define gcov_read_summary __gcov_read_summary |
| #define gcov_read_buildinfo __gcov_read_buildinfo |
| #define gcov_read_module_info __gcov_read_module_info |
| #define gcov_sort_n_vals __gcov_sort_n_vals |
| |
| /* Poison these, so they don't accidentally slip in. */ |
| #pragma GCC poison gcov_write_string gcov_write_tag gcov_write_length |
| #pragma GCC poison gcov_time gcov_magic |
| |
| #ifdef HAVE_GAS_HIDDEN |
| #define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden"))) |
| #else |
| #define ATTRIBUTE_HIDDEN |
| #endif |
| |
| #include "gcov-io.h" |
| |
| /* Structures embedded in coveraged program. The structures generated |
| by write_profile must match these. */ |
| /* Information about counters for a single function. */ |
| struct gcov_ctr_info |
| { |
| gcov_unsigned_t num; /* number of counters. */ |
| gcov_type *values; /* their values. */ |
| }; |
| |
| /* Information about a single function. This uses the trailing array |
| idiom. The number of counters is determined from the merge pointer |
| array in gcov_info. The key is used to detect which of a set of |
| comdat functions was selected -- it points to the gcov_info object |
| of the object file containing the selected comdat function. */ |
| |
| struct gcov_fn_info |
| { |
| const struct gcov_info *key; /* comdat key */ |
| gcov_unsigned_t ident; /* unique ident of function */ |
| gcov_unsigned_t lineno_checksum; /* function lineo_checksum */ |
| gcov_unsigned_t cfg_checksum; /* function cfg checksum */ |
| struct gcov_ctr_info ctrs[1]; /* instrumented counters */ |
| }; |
| |
| /* Type of function used to merge counters. */ |
| typedef void (*gcov_merge_fn) (gcov_type *, gcov_unsigned_t); |
| |
| /* Information about a single object file. */ |
| struct gcov_info |
| { |
| gcov_unsigned_t version; /* expected version number */ |
| struct gcov_module_info *mod_info; /* addtional module info. */ |
| struct gcov_info *next; /* link to next, used by libgcov */ |
| |
| gcov_unsigned_t stamp; /* uniquifying time stamp */ |
| const char *filename; /* output file name */ |
| gcov_unsigned_t eof_pos; /* end position of profile data */ |
| gcov_merge_fn merge[GCOV_COUNTERS]; /* merge functions (null for |
| unused) */ |
| |
| unsigned n_functions; /* number of functions */ |
| |
| #if !defined (IN_GCOV_TOOL) && !defined (__KERNEL__) |
| const struct gcov_fn_info *const *functions; /* pointer to pointers |
| to function information */ |
| #elif defined (IN_GCOV_TOOL) |
| const struct gcov_fn_info **functions; |
| #else |
| struct gcov_fn_info **functions; |
| #endif /* !IN_GCOV_TOOL */ |
| char **build_info; /* strings to include in BUILD_INFO |
| section of gcda file. */ |
| }; |
| |
| /* Information about a single imported module. */ |
| struct dyn_imp_mod |
| { |
| const struct gcov_info *imp_mod; |
| double weight; |
| }; |
| |
| /* Register a new object file module. */ |
| extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN; |
| |
| /* Set sampling rate to RATE. */ |
| extern void __gcov_set_sampling_rate (unsigned int rate); |
| |
| /* Called before fork, to avoid double counting. */ |
| extern void __gcov_flush (void) ATTRIBUTE_HIDDEN; |
| |
| /* Function to reset all counters to 0. */ |
| extern void __gcov_reset (void); |
| /* Function to enable early write of profile information so far. |
| __gcov_dump is also used by __gcov_dump_all. The latter |
| depends on __GCOV_DUMP to have hidden or protected visibility |
| so that each library has its own copy of the registered dumper. */ |
| extern void __gcov_dump (void) ATTRIBUTE_HIDDEN; |
| |
| /* Call __gcov_dump registered from each shared library. |
| This function must have default visibility. */ |
| void __gcov_dump_all (void); |
| |
| /* The merge function that just sums the counters. */ |
| extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| /* The merge function to choose the most common value. */ |
| extern void __gcov_merge_single (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| /* The merge function to choose the most common difference between |
| consecutive values. */ |
| extern void __gcov_merge_delta (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| /* The merge function that just ors the counters together. */ |
| extern void __gcov_merge_ior (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| /* The merge function used for direct call counters. */ |
| extern void __gcov_merge_dc (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| /* The merge function used for indirect call counters. */ |
| extern void __gcov_merge_icall_topn (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| extern void __gcov_merge_time_profile (gcov_type *, unsigned) ATTRIBUTE_HIDDEN; |
| |
| /* The profiler functions. */ |
| extern void __gcov_interval_profiler (gcov_type *, gcov_type, int, unsigned); |
| extern void __gcov_pow2_profiler (gcov_type *, gcov_type); |
| extern void __gcov_one_value_profiler (gcov_type *, gcov_type); |
| extern void __gcov_indirect_call_profiler (gcov_type*, gcov_type, |
| void*, void*); |
| extern void __gcov_indirect_call_profiler_v2 (gcov_type, void *); |
| extern void __gcov_indirect_call_topn_profiler (void *, void *, gcov_unsigned_t) ATTRIBUTE_HIDDEN; |
| extern void __gcov_direct_call_profiler (void *, void *, gcov_unsigned_t) ATTRIBUTE_HIDDEN; |
| extern void __gcov_average_profiler (gcov_type *, gcov_type); |
| extern void __gcov_ior_profiler (gcov_type *, gcov_type); |
| extern void __gcov_sort_n_vals (gcov_type *value_array, int n); |
| extern void __gcov_time_profiler (gcov_type *); |
| |
| #ifndef inhibit_libc |
| /* The wrappers around some library functions.. */ |
| extern pid_t __gcov_fork (void) ATTRIBUTE_HIDDEN; |
| extern int __gcov_execl (const char *, char *, ...) ATTRIBUTE_HIDDEN; |
| extern int __gcov_execlp (const char *, char *, ...) ATTRIBUTE_HIDDEN; |
| extern int __gcov_execle (const char *, char *, ...) ATTRIBUTE_HIDDEN; |
| extern int __gcov_execv (const char *, char *const []) ATTRIBUTE_HIDDEN; |
| extern int __gcov_execvp (const char *, char *const []) ATTRIBUTE_HIDDEN; |
| extern int __gcov_execve (const char *, char *const [], char *const []) |
| ATTRIBUTE_HIDDEN; |
| |
| |
| /* Functions that only available in libgcov. */ |
| GCOV_LINKAGE int gcov_open (const char */*name*/) ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE void gcov_write_counter (gcov_type) ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE void gcov_write_tag_length (gcov_unsigned_t, gcov_unsigned_t) |
| ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE void gcov_write_summary (gcov_unsigned_t /*tag*/, |
| const struct gcov_summary *) |
| ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE void gcov_seek (gcov_position_t /*position*/) ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE void gcov_truncate (void) ATTRIBUTE_HIDDEN; |
| void gcov_write_module_info (const struct gcov_info *, unsigned) |
| ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE void gcov_write_module_infos (struct gcov_info *mod_info) |
| ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE const struct dyn_imp_mod ** |
| gcov_get_sorted_import_module_array (struct gcov_info *mod_info, unsigned *len) |
| ATTRIBUTE_HIDDEN; |
| GCOV_LINKAGE inline void gcov_rewrite (void); |
| |
| extern void set_gcov_fn_fixed_up (int fixed_up); |
| extern int get_gcov_fn_fixed_up (void); |
| |
| /* "Counts" stored in gcda files can be a real counter value, or |
| an target address. When differentiate these two types because |
| when manipulating counts, we should only change real counter values, |
| rather target addresses. */ |
| |
| static inline gcov_type |
| gcov_get_counter (void) |
| { |
| #ifndef IN_GCOV_TOOL |
| /* This version is for reading count values in libgcov runtime: |
| we read from gcda files. */ |
| |
| if (get_gcov_fn_fixed_up ()) |
| { |
| gcov_read_counter (); |
| return 0; |
| } |
| else |
| return gcov_read_counter (); |
| #else |
| /* This version is for gcov-tool. We read the value from memory and |
| multiply it by the merge weight. */ |
| |
| return gcov_read_counter_mem () * gcov_get_merge_weight (); |
| #endif |
| } |
| |
| /* Similar function as gcov_get_counter(), but handles target address |
| counters. */ |
| |
| static inline gcov_type |
| gcov_get_counter_target (void) |
| { |
| #ifndef IN_GCOV_TOOL |
| /* This version is for reading count target values in libgcov runtime: |
| we read from gcda files. */ |
| |
| if (get_gcov_fn_fixed_up ()) |
| { |
| gcov_read_counter (); |
| return 0; |
| } |
| else |
| return gcov_read_counter (); |
| #else |
| /* This version is for gcov-tool. We read the value from memory and we do NOT |
| multiply it by the merge weight. */ |
| |
| return gcov_read_counter_mem (); |
| #endif |
| } |
| |
| #endif /* !inhibit_libc */ |
| |
| #endif /* GCC_LIBGCOV_H */ |