diff options
Diffstat (limited to 'gcc-4.9/gcc/coverage.c')
| -rw-r--r-- | gcc-4.9/gcc/coverage.c | 162 |
1 files changed, 147 insertions, 15 deletions
diff --git a/gcc-4.9/gcc/coverage.c b/gcc-4.9/gcc/coverage.c index bfc5731ff..93f394d84 100644 --- a/gcc-4.9/gcc/coverage.c +++ b/gcc-4.9/gcc/coverage.c @@ -177,6 +177,10 @@ static unsigned num_cpp_defines = 0; static struct str_list *cpp_includes_head = NULL, *cpp_includes_tail = NULL; static unsigned num_cpp_includes = 0; +/* List of lines read from -fprofile-generate-buildinfo=filename. */ +struct str_list *build_info_array_head = NULL, *build_info_array_tail = NULL; +static unsigned num_build_info = 0; + /* True if the current module has any asm statements. */ static bool has_asm_statement; @@ -805,6 +809,25 @@ read_counts_file (const char *da_file_name, unsigned module_id) sum.ctrs[GCOV_COUNTER_ARCS].histogram); new_summary = 0; } + else if (tag == GCOV_TAG_BUILD_INFO) + { + /* Build info strings are not used by the compiler, read and + ignore. */ + gcov_unsigned_t num_strings; + char **build_info_strings = gcov_read_build_info (length, + &num_strings); + for (unsigned i = 0; i < num_strings; i++) + free (build_info_strings[i]); + free (build_info_strings); + } + else if (tag == GCOV_TAG_COMDAT_ZERO_FIXUP) + { + /* Zero-profile fixup flags are not used by the compiler, read and + ignore. */ + gcov_unsigned_t num_fn; + int *zero_fixup_flags = gcov_read_comdat_zero_fixup (length, &num_fn); + free (zero_fixup_flags); + } else if (GCOV_TAG_IS_COUNTER (tag) && fn_ident) { counts_entry_t **slot, *entry, elt; @@ -1761,6 +1784,7 @@ build_info_type (tree type, tree fn_info_ptr_type) { tree field, fields = NULL_TREE; tree merge_fn_type, mod_type; + tree string_type, string_ptr_type; /* Version ident */ field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, @@ -1828,6 +1852,17 @@ build_info_type (tree type, tree fn_info_ptr_type) DECL_CHAIN (field) = fields; fields = field; + /* build_info string array */ + string_type = build_pointer_type ( + build_qualified_type (char_type_node, + TYPE_QUAL_CONST)); + string_ptr_type = build_pointer_type + (build_qualified_type (string_type, TYPE_QUAL_CONST)); + field = build_decl (BUILTINS_LOCATION, FIELD_DECL, + NULL_TREE, string_ptr_type); + DECL_CHAIN (field) = fields; + fields = field; + finish_builtin_struct (type, "__gcov_info", fields, NULL_TREE); } @@ -2227,6 +2262,96 @@ build_gcov_module_info_value (tree mod_type) return mod_info; } +/* Returns the value of the build info string read earlier. */ + +static tree +build_gcov_build_info_value (void) +{ + tree build_info; + tree value = NULL_TREE; + tree string_type, index_type, string_array_type; + vec<constructor_elt,va_gc> *v = NULL; + char name_buf[50]; + + string_type = build_pointer_type ( + build_qualified_type (char_type_node, + TYPE_QUAL_CONST)); + index_type = build_index_type (build_int_cst (NULL_TREE, num_build_info)); + string_array_type = build_array_type (string_type, index_type); + + build_str_array_value (string_type, &v, + build_info_array_head); + value = build_constructor (string_array_type, v); + + build_info = build_decl (BUILTINS_LOCATION, VAR_DECL, + NULL_TREE, TREE_TYPE (value)); + TREE_STATIC (build_info) = 1; + ASM_GENERATE_INTERNAL_LABEL (name_buf, "BUILDINFO", 0); + DECL_NAME (build_info) = get_identifier (name_buf); + DECL_INITIAL (build_info) = value; + + /* Build structure. */ + varpool_finalize_decl (build_info); + + return build_info; +} + +/* Add S to the end of the string-list, the head and tail of which are + pointed-to by HEAD and TAIL, respectively. */ + +static void +str_list_append (struct str_list **head, struct str_list **tail, const char *s) +{ + struct str_list *e = XNEW (struct str_list); + e->str = XNEWVEC (char, strlen (s) + 1); + strcpy (e->str, s); + e->next = NULL; + if (*tail) + (*tail)->next = e; + else + *head = e; + *tail = e; +} + +/* Read file specified to -fprofile-generate-buildinfo=filename option and + create a list of strings to include in build_info array. */ + +static void +read_buildinfo (void) +{ + char buf[1024]; + FILE *buildinfo = fopen (flag_profile_generate_buildinfo, "r"); + if (!buildinfo) + { + error ("could not open -fprofile-generate-buildinfo file %qs: %m", + flag_profile_generate_buildinfo); + } + + while (fgets (buf, sizeof buf, buildinfo) != NULL) + { + /* Remove end of line. */ + int len = strlen (buf); + if (len >= 1 && buf[len - 1] =='\n') + buf[len - 1] = '\0'; + str_list_append (&build_info_array_head, &build_info_array_tail, buf); + num_build_info++; + } + /* Terminate with an empty string. */ + str_list_append (&build_info_array_head, &build_info_array_tail, ""); + num_build_info++; + if (ferror (buildinfo)) + { + error ("error reading -fprofile-generate-buildinfo file %qs: %m", + flag_profile_generate_buildinfo); + } + + if (fclose (buildinfo)) + { + error ("could not close -fprofile-generate-buildinfo file %qs: %m", + flag_profile_generate_buildinfo); + } +} + /* Returns a CONSTRUCTOR for the gcov_info object. INFO_TYPE is the gcov_info structure type, FN_ARY is the array of pointers to function info objects. */ @@ -2238,6 +2363,7 @@ build_info (tree info_type, tree fn_ary) tree merge_fn_type, n_funcs; unsigned ix; tree mod_value = NULL_TREE; + tree buildinfo_value = NULL_TREE; tree filename_string; int da_file_name_len; vec<constructor_elt, va_gc> *v1 = NULL; @@ -2320,6 +2446,20 @@ build_info (tree info_type, tree fn_ary) build1 (ADDR_EXPR, TREE_TYPE (info_fields), fn_ary)); info_fields = DECL_CHAIN (info_fields); + /* build_info string array */ + if (flag_profile_generate_buildinfo) + read_buildinfo (); + if (num_build_info) + { + buildinfo_value = build_gcov_build_info_value (); + CONSTRUCTOR_APPEND_ELT (v1, info_fields, + build1 (ADDR_EXPR, TREE_TYPE (info_fields), + buildinfo_value)); + } + else + CONSTRUCTOR_APPEND_ELT (v1, info_fields, null_pointer_node); + info_fields = DECL_CHAIN (info_fields); + gcc_assert (!info_fields); return build_constructor (info_type, v1); } @@ -2846,22 +2986,9 @@ coverage_finish (void) da_file_name = NULL; } -/* Add S to the end of the string-list, the head and tail of which are - pointed-to by HEAD and TAIL, respectively. */ +extern bool is_kernel_build; -static void -str_list_append (struct str_list **head, struct str_list **tail, const char *s) -{ - struct str_list *e = XNEW (struct str_list); - e->str = XNEWVEC (char, strlen (s) + 1); - strcpy (e->str, s); - e->next = NULL; - if (*tail) - (*tail)->next = e; - else - *head = e; - *tail = e; -} +#define KERNEL_BUILD_PREDEF_STRING "__KERNEL__" /* Copies the macro def or undef CPP_DEF and saves the copy in a list. IS_DEF is a flag indicating if CPP_DEF represents @@ -2875,6 +3002,11 @@ coverage_note_define (const char *cpp_def, bool is_def) strcpy (s + 1, cpp_def); str_list_append (&cpp_defines_head, &cpp_defines_tail, s); num_cpp_defines++; + + /* When -D__KERNEL__ is in the option list, we assume this is + compilation for Linux Kernel. */ + if (!strcmp(cpp_def, KERNEL_BUILD_PREDEF_STRING)) + is_kernel_build = is_def; } /* Copies the -imacro/-include FILENAME and saves the copy in a list. */ |