Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

[cascardo/linux.git] / scripts / kallsyms.c

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 518da86..10085de 100644 (file)
--- 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);
 }
 
@@ -200,6 +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++;
@@ -652,6 +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();
                }