[PATCH] kallsyms C_SYMBOL_PREFIX support
kallsyms does not consider SYMBOL_PREFIX of C. Consequently it does not work on architectures using that prefix character (h8300, v850). Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Yoshinori Sato
Linus Torvalds
parent
6c9e7376be
commit
41f11a4fa3
|
|
@ -69,6 +69,7 @@ static struct sym_entry *table;
|
|||
static int size, cnt;
|
||||
static unsigned long long _stext, _etext, _sinittext, _einittext;
|
||||
static int all_symbols = 0;
|
||||
static char symbol_prefix_char = '\0';
|
||||
|
||||
struct token {
|
||||
unsigned char data[MAX_TOK_SIZE];
|
||||
|
|
@ -93,7 +94,7 @@ unsigned char best_table_len[256];
|
|||
static void
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr, "Usage: kallsyms [--all-symbols] < in.map > out.S\n");
|
||||
fprintf(stderr, "Usage: kallsyms [--all-symbols] [--symbol-prefix=<prefix char>] < in.map > out.S\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
|
|
@ -112,6 +113,7 @@ static int
|
|||
read_symbol(FILE *in, struct sym_entry *s)
|
||||
{
|
||||
char str[500];
|
||||
char *sym;
|
||||
int rc;
|
||||
|
||||
rc = fscanf(in, "%llx %c %499s\n", &s->addr, &s->type, str);
|
||||
|
|
@ -123,27 +125,32 @@ read_symbol(FILE *in, struct sym_entry *s)
|
|||
return -1;
|
||||
}
|
||||
|
||||
sym = str;
|
||||
/* skip prefix char */
|
||||
if (symbol_prefix_char && str[0] == symbol_prefix_char)
|
||||
sym++;
|
||||
|
||||
/* Ignore most absolute/undefined (?) symbols. */
|
||||
if (strcmp(str, "_stext") == 0)
|
||||
if (strcmp(sym, "_stext") == 0)
|
||||
_stext = s->addr;
|
||||
else if (strcmp(str, "_etext") == 0)
|
||||
else if (strcmp(sym, "_etext") == 0)
|
||||
_etext = s->addr;
|
||||
else if (strcmp(str, "_sinittext") == 0)
|
||||
else if (strcmp(sym, "_sinittext") == 0)
|
||||
_sinittext = s->addr;
|
||||
else if (strcmp(str, "_einittext") == 0)
|
||||
else if (strcmp(sym, "_einittext") == 0)
|
||||
_einittext = s->addr;
|
||||
else if (toupper(s->type) == 'A')
|
||||
{
|
||||
/* Keep these useful absolute symbols */
|
||||
if (strcmp(str, "__kernel_syscall_via_break") &&
|
||||
strcmp(str, "__kernel_syscall_via_epc") &&
|
||||
strcmp(str, "__kernel_sigtramp") &&
|
||||
strcmp(str, "__gp"))
|
||||
if (strcmp(sym, "__kernel_syscall_via_break") &&
|
||||
strcmp(sym, "__kernel_syscall_via_epc") &&
|
||||
strcmp(sym, "__kernel_sigtramp") &&
|
||||
strcmp(sym, "__gp"))
|
||||
return -1;
|
||||
|
||||
}
|
||||
else if (toupper(s->type) == 'U' ||
|
||||
is_arm_mapping_symbol(str))
|
||||
is_arm_mapping_symbol(sym))
|
||||
return -1;
|
||||
|
||||
/* include the type field in the symbol name, so that it gets
|
||||
|
|
@ -177,6 +184,11 @@ symbol_valid(struct sym_entry *s)
|
|||
"_SDA2_BASE_", /* ppc */
|
||||
NULL };
|
||||
int i;
|
||||
int offset = 1;
|
||||
|
||||
/* skip prefix char */
|
||||
if (symbol_prefix_char && *(s->sym + 1) == symbol_prefix_char)
|
||||
offset++;
|
||||
|
||||
/* if --all-symbols is not specified, then symbols outside the text
|
||||
* and inittext sections are discarded */
|
||||
|
|
@ -190,17 +202,17 @@ symbol_valid(struct sym_entry *s)
|
|||
* they may get dropped in pass 2, which breaks the kallsyms
|
||||
* rules.
|
||||
*/
|
||||
if ((s->addr == _etext && strcmp(s->sym + 1, "_etext")) ||
|
||||
(s->addr == _einittext && strcmp(s->sym + 1, "_einittext")))
|
||||
if ((s->addr == _etext && strcmp(s->sym + offset, "_etext")) ||
|
||||
(s->addr == _einittext && strcmp(s->sym + offset, "_einittext")))
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Exclude symbols which vary between passes. */
|
||||
if (strstr(s->sym + 1, "_compiled."))
|
||||
if (strstr(s->sym + offset, "_compiled."))
|
||||
return 0;
|
||||
|
||||
for (i = 0; special_symbols[i]; i++)
|
||||
if( strcmp(s->sym + 1, special_symbols[i]) == 0 )
|
||||
if( strcmp(s->sym + offset, special_symbols[i]) == 0 )
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
|
|
@ -225,9 +237,15 @@ read_map(FILE *in)
|
|||
|
||||
static void output_label(char *label)
|
||||
{
|
||||
printf(".globl %s\n",label);
|
||||
if (symbol_prefix_char)
|
||||
printf(".globl %c%s\n", symbol_prefix_char, label);
|
||||
else
|
||||
printf(".globl %s\n", label);
|
||||
printf("\tALGN\n");
|
||||
printf("%s:\n",label);
|
||||
if (symbol_prefix_char)
|
||||
printf("%c%s:\n", symbol_prefix_char, label);
|
||||
else
|
||||
printf("%s:\n", label);
|
||||
}
|
||||
|
||||
/* uncompress a compressed symbol. When this function is called, the best table
|
||||
|
|
@ -665,6 +683,13 @@ static void optimize_token_table(void)
|
|||
|
||||
insert_real_symbols_in_table();
|
||||
|
||||
/* When valid symbol is not registered, exit to error */
|
||||
if (good_head.left == good_head.right &&
|
||||
bad_head.left == bad_head.right) {
|
||||
fprintf(stderr, "No valid symbol.\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
optimize_result();
|
||||
}
|
||||
|
||||
|
|
@ -672,9 +697,21 @@ static void optimize_token_table(void)
|
|||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
if (argc == 2 && strcmp(argv[1], "--all-symbols") == 0)
|
||||
all_symbols = 1;
|
||||
else if (argc != 1)
|
||||
if (argc >= 2) {
|
||||
int i;
|
||||
for (i = 1; i < argc; i++) {
|
||||
if(strcmp(argv[i], "--all-symbols") == 0)
|
||||
all_symbols = 1;
|
||||
else if (strncmp(argv[i], "--symbol-prefix=", 16) == 0) {
|
||||
char *p = &argv[i][16];
|
||||
/* skip quote */
|
||||
if ((*p == '"' && *(p+2) == '"') || (*p == '\'' && *(p+2) == '\''))
|
||||
p++;
|
||||
symbol_prefix_char = *p;
|
||||
} else
|
||||
usage();
|
||||
}
|
||||
} else if (argc != 1)
|
||||
usage();
|
||||
|
||||
read_map(stdin);
|
||||
|
|
@ -683,4 +720,3 @@ main(int argc, char **argv)
|
|||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue