diff options
Diffstat (limited to 'scripts/kallsyms.c')
| -rw-r--r-- | scripts/kallsyms.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 487ac6f37ca2..10085de886fe 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -55,6 +55,7 @@ static struct sym_entry *table; static unsigned int table_size, table_cnt; static int all_symbols = 0; static char symbol_prefix_char = '\0'; +static unsigned long long kernel_start_addr = 0; int token_profit[0x10000]; @@ -65,7 +66,10 @@ unsigned char best_table_len[256]; static void usage(void) { - fprintf(stderr, "Usage: kallsyms [--all-symbols] [--symbol-prefix=<prefix char>] < in.map > out.S\n"); + fprintf(stderr, "Usage: kallsyms [--all-symbols] " + "[--symbol-prefix=<prefix char>] " + "[--page-offset=<CONFIG_PAGE_OFFSET>] " + "< in.map > out.S\n"); exit(1); } @@ -111,6 +115,12 @@ static int read_symbol(FILE *in, struct sym_entry *s) fprintf(stderr, "Read error or end of file.\n"); return -1; } + if (strlen(str) > KSYM_NAME_LEN) { + fprintf(stderr, "Symbol %s too long for kallsyms (%zu vs %d).\n" + "Please increase KSYM_NAME_LEN both in kernel and kallsyms.c\n", + str, strlen(str), KSYM_NAME_LEN); + return -1; + } sym = str; /* skip prefix char */ @@ -194,6 +204,9 @@ static int symbol_valid(struct sym_entry *s) int i; int offset = 1; + if (s->addr < kernel_start_addr) + return 0; + /* skip prefix char */ if (symbol_prefix_char && *(s->sym + 1) == symbol_prefix_char) offset++; @@ -646,6 +659,9 @@ int main(int argc, char **argv) if ((*p == '"' && *(p+2) == '"') || (*p == '\'' && *(p+2) == '\'')) p++; symbol_prefix_char = *p; + } else if (strncmp(argv[i], "--page-offset=", 14) == 0) { + const char *p = &argv[i][14]; + kernel_start_addr = strtoull(p, NULL, 16); } else usage(); } |