Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

[sfrench/cifs-2.6.git] / scripts / kallsyms.c

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 1f11d848532a0474b342ca462a905af4f044b2f6..c912137f80e247d0b8076e32f7386005127889a0 100644 (file)
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -31,17 +31,16 @@
 
 #define KSYM_NAME_LEN          128
 
-
 struct sym_entry {
        unsigned long long addr;
        unsigned int len;
+       unsigned int start_pos;
        unsigned char *sym;
 };
 
-
 static struct sym_entry *table;
 static unsigned int table_size, table_cnt;
-static unsigned long long _text, _stext, _etext, _sinittext, _einittext, _sextratext, _eextratext;
+static unsigned long long _text, _stext, _etext, _sinittext, _einittext;
 static int all_symbols = 0;
 static char symbol_prefix_char = '\0';
 
@@ -99,10 +98,6 @@ static int read_symbol(FILE *in, struct sym_entry *s)
                _sinittext = s->addr;
        else if (strcmp(sym, "_einittext") == 0)
                _einittext = s->addr;
-       else if (strcmp(sym, "_sextratext") == 0)
-               _sextratext = s->addr;
-       else if (strcmp(sym, "_eextratext") == 0)
-               _eextratext = s->addr;
        else if (toupper(stype) == 'A')
        {
                /* Keep these useful absolute symbols */
@@ -165,18 +160,18 @@ static int symbol_valid(struct sym_entry *s)
         * and inittext sections are discarded */
        if (!all_symbols) {
                if ((s->addr < _stext || s->addr > _etext)
-                   && (s->addr < _sinittext || s->addr > _einittext)
-                   && (s->addr < _sextratext || s->addr > _eextratext))
+                   && (s->addr < _sinittext || s->addr > _einittext))
                        return 0;
                /* Corner case.  Discard any symbols with the same value as
-                * _etext _einittext or _eextratext; they can move between pass
-                * 1 and 2 when the kallsyms data are added.  If these symbols
-                * move then they may get dropped in pass 2, which breaks the
-                * kallsyms rules.
+                * _etext _einittext; they can move between pass 1 and 2 when
+                * the kallsyms data are added.  If these symbols move then
+                * they may get dropped in pass 2, which breaks the kallsyms
+                * rules.
                 */
-               if ((s->addr == _etext && strcmp((char*)s->sym + offset, "_etext")) ||
-                   (s->addr == _einittext && strcmp((char*)s->sym + offset, "_einittext")) ||
-                   (s->addr == _eextratext && strcmp((char*)s->sym + offset, "_eextratext")))
+               if ((s->addr == _etext &&
+                               strcmp((char *)s->sym + offset, "_etext")) ||
+                   (s->addr == _einittext &&
+                               strcmp((char *)s->sym + offset, "_einittext")))
                        return 0;
        }
 
@@ -202,8 +197,10 @@ static void read_map(FILE *in)
                                exit (1);
                        }
                }
-               if (read_symbol(in, &table[table_cnt]) == 0)
+               if (read_symbol(in, &table[table_cnt]) == 0) {
+                       table[table_cnt].start_pos = table_cnt;
                        table_cnt++;
+               }
        }
 }
 
@@ -506,6 +503,35 @@ static void optimize_token_table(void)
        optimize_result();
 }
 
+static int compare_symbols(const void *a, const void *b)
+{
+       const struct sym_entry *sa;
+       const struct sym_entry *sb;
+       int wa, wb;
+
+       sa = a;
+       sb = b;
+
+       /* sort by address first */
+       if (sa->addr > sb->addr)
+               return 1;
+       if (sa->addr < sb->addr)
+               return -1;
+
+       /* sort by "weakness" type */
+       wa = (sa->sym[0] == 'w') || (sa->sym[0] == 'W');
+       wb = (sb->sym[0] == 'w') || (sb->sym[0] == 'W');
+       if (wa != wb)
+               return wa - wb;
+
+       /* sort by initial order, so that other symbols are left undisturbed */
+       return sa->start_pos - sb->start_pos;
+}
+
+static void sort_symbols(void)
+{
+       qsort(table, table_cnt, sizeof(struct sym_entry), compare_symbols);
+}
 
 int main(int argc, char **argv)
 {
@@ -527,6 +553,7 @@ int main(int argc, char **argv)
                usage();
 
        read_map(stdin);
+       sort_symbols();
        optimize_token_table();
        write_src();