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-rw-r--r--scripts/kallsyms.c53
1 files changed, 32 insertions, 21 deletions
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 10085de886fe..3df15f5e7c55 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -36,13 +36,13 @@ struct sym_entry {
unsigned char *sym;
};
-struct text_range {
- const char *stext, *etext;
+struct addr_range {
+ const char *start_sym, *end_sym;
unsigned long long start, end;
};
static unsigned long long _text;
-static struct text_range text_ranges[] = {
+static struct addr_range text_ranges[] = {
{ "_stext", "_etext" },
{ "_sinittext", "_einittext" },
{ "_stext_l1", "_etext_l1" }, /* Blackfin on-chip L1 inst SRAM */
@@ -83,19 +83,20 @@ static inline int is_arm_mapping_symbol(const char *str)
&& (str[2] == '\0' || str[2] == '.');
}
-static int read_symbol_tr(const char *sym, unsigned long long addr)
+static int check_symbol_range(const char *sym, unsigned long long addr,
+ struct addr_range *ranges, int entries)
{
size_t i;
- struct text_range *tr;
+ struct addr_range *ar;
- for (i = 0; i < ARRAY_SIZE(text_ranges); ++i) {
- tr = &text_ranges[i];
+ for (i = 0; i < entries; ++i) {
+ ar = &ranges[i];
- if (strcmp(sym, tr->stext) == 0) {
- tr->start = addr;
+ if (strcmp(sym, ar->start_sym) == 0) {
+ ar->start = addr;
return 0;
- } else if (strcmp(sym, tr->etext) == 0) {
- tr->end = addr;
+ } else if (strcmp(sym, ar->end_sym) == 0) {
+ ar->end = addr;
return 0;
}
}
@@ -130,7 +131,8 @@ static int read_symbol(FILE *in, struct sym_entry *s)
/* Ignore most absolute/undefined (?) symbols. */
if (strcmp(sym, "_text") == 0)
_text = s->addr;
- else if (read_symbol_tr(sym, s->addr) == 0)
+ else if (check_symbol_range(sym, s->addr, text_ranges,
+ ARRAY_SIZE(text_ranges)) == 0)
/* nothing to do */;
else if (toupper(stype) == 'A')
{
@@ -167,15 +169,16 @@ static int read_symbol(FILE *in, struct sym_entry *s)
return 0;
}
-static int symbol_valid_tr(struct sym_entry *s)
+static int symbol_in_range(struct sym_entry *s, struct addr_range *ranges,
+ int entries)
{
size_t i;
- struct text_range *tr;
+ struct addr_range *ar;
- for (i = 0; i < ARRAY_SIZE(text_ranges); ++i) {
- tr = &text_ranges[i];
+ for (i = 0; i < entries; ++i) {
+ ar = &ranges[i];
- if (s->addr >= tr->start && s->addr <= tr->end)
+ if (s->addr >= ar->start && s->addr <= ar->end)
return 1;
}
@@ -214,7 +217,8 @@ static int symbol_valid(struct sym_entry *s)
/* if --all-symbols is not specified, then symbols outside the text
* and inittext sections are discarded */
if (!all_symbols) {
- if (symbol_valid_tr(s) == 0)
+ if (symbol_in_range(s, text_ranges,
+ ARRAY_SIZE(text_ranges)) == 0)
return 0;
/* Corner case. Discard any symbols with the same value as
* _etext _einittext; they can move between pass 1 and 2 when
@@ -223,9 +227,11 @@ static int symbol_valid(struct sym_entry *s)
* rules.
*/
if ((s->addr == text_range_text->end &&
- strcmp((char *)s->sym + offset, text_range_text->etext)) ||
+ strcmp((char *)s->sym + offset,
+ text_range_text->end_sym)) ||
(s->addr == text_range_inittext->end &&
- strcmp((char *)s->sym + offset, text_range_inittext->etext)))
+ strcmp((char *)s->sym + offset,
+ text_range_inittext->end_sym)))
return 0;
}
@@ -298,6 +304,11 @@ static int expand_symbol(unsigned char *data, int len, char *result)
return total;
}
+static int symbol_absolute(struct sym_entry *s)
+{
+ return toupper(s->sym[0]) == 'A';
+}
+
static void write_src(void)
{
unsigned int i, k, off;
@@ -325,7 +336,7 @@ static void write_src(void)
*/
output_label("kallsyms_addresses");
for (i = 0; i < table_cnt; i++) {
- if (toupper(table[i].sym[0]) != 'A') {
+ if (!symbol_absolute(&table[i])) {
if (_text <= table[i].addr)
printf("\tPTR\t_text + %#llx\n",
table[i].addr - _text);