diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/kallsyms.c | 113 |
1 files changed, 62 insertions, 51 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 056bde436540..843615c1d384 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -18,6 +18,7 @@ * */ +#include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -79,6 +80,64 @@ static char *sym_name(const struct sym_entry *s) return (char *)s->sym + 1; } +static bool is_ignored_symbol(const char *name, char type) +{ + static const char * const ignored_symbols[] = { + /* + * Symbols which vary between passes. Passes 1 and 2 must have + * identical symbol lists. The kallsyms_* symbols below are + * only added after pass 1, they would be included in pass 2 + * when --all-symbols is specified so exclude them to get a + * stable symbol list. + */ + "kallsyms_addresses", + "kallsyms_offsets", + "kallsyms_relative_base", + "kallsyms_num_syms", + "kallsyms_names", + "kallsyms_markers", + "kallsyms_token_table", + "kallsyms_token_index", + /* Exclude linker generated symbols which vary between passes */ + "_SDA_BASE_", /* ppc */ + "_SDA2_BASE_", /* ppc */ + NULL + }; + + static const char * const ignored_prefixes[] = { + "__crc_", /* modversions */ + "__efistub_", /* arm64 EFI stub namespace */ + NULL + }; + + static const char * const ignored_suffixes[] = { + "_from_arm", /* arm */ + "_from_thumb", /* arm */ + "_veneer", /* arm */ + NULL + }; + + const char * const *p; + + /* Exclude symbols which vary between passes. */ + for (p = ignored_symbols; *p; p++) + if (!strcmp(name, *p)) + return true; + + for (p = ignored_prefixes; *p; p++) + if (!strncmp(name, *p, strlen(*p))) + return true; + + for (p = ignored_suffixes; *p; p++) { + int l = strlen(name) - strlen(*p); + + if (l >= 0 && !strcmp(name + l, *p)) + return true; + } + + return false; +} + static int check_symbol_range(const char *sym, unsigned long long addr, struct addr_range *ranges, int entries) { @@ -118,6 +177,9 @@ static int read_symbol(FILE *in, struct sym_entry *s) return -1; } + if (is_ignored_symbol(sym, stype)) + return -1; + /* Ignore most absolute/undefined (?) symbols. */ if (strcmp(sym, "_text") == 0) _text = s->addr; @@ -188,38 +250,6 @@ static int symbol_in_range(const struct sym_entry *s, static int symbol_valid(const struct sym_entry *s) { - /* Symbols which vary between passes. Passes 1 and 2 must have - * identical symbol lists. The kallsyms_* symbols below are only added - * after pass 1, they would be included in pass 2 when --all-symbols is - * specified so exclude them to get a stable symbol list. - */ - static const char * const special_symbols[] = { - "kallsyms_addresses", - "kallsyms_offsets", - "kallsyms_relative_base", - "kallsyms_num_syms", - "kallsyms_names", - "kallsyms_markers", - "kallsyms_token_table", - "kallsyms_token_index", - - /* Exclude linker generated symbols which vary between passes */ - "_SDA_BASE_", /* ppc */ - "_SDA2_BASE_", /* ppc */ - NULL }; - - static const char * const special_prefixes[] = { - "__crc_", /* modversions */ - "__efistub_", /* arm64 EFI stub namespace */ - NULL }; - - static const char * const special_suffixes[] = { - "_veneer", /* arm */ - "_from_arm", /* arm */ - "_from_thumb", /* arm */ - NULL }; - - int i; const char *name = sym_name(s); /* if --all-symbols is not specified, then symbols outside the text @@ -241,25 +271,6 @@ static int symbol_valid(const struct sym_entry *s) return 0; } - /* Exclude symbols which vary between passes. */ - for (i = 0; special_symbols[i]; i++) - if (strcmp(name, special_symbols[i]) == 0) - return 0; - - for (i = 0; special_prefixes[i]; i++) { - int l = strlen(special_prefixes[i]); - - if (strncmp(name, special_prefixes[i], l) == 0) - return 0; - } - - for (i = 0; special_suffixes[i]; i++) { - int l = strlen(name) - strlen(special_suffixes[i]); - - if (l >= 0 && strcmp(name + l, special_suffixes[i]) == 0) - return 0; - } - return 1; } |