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kallsyms: support kernel symbols in Blackfin on-chip memory 

The Blackfin arch has a discontiguous .text layout due to having on-chip
instruction memory and no virtual memory support.  As such, we need to
add explicit checks for these additional .text regions.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Robin Getz 2006-07-10 06:25:40 +00:00 committed by Sam Ravnborg
parent 2185a5ecd9
commit 028f042613
1 changed files with 12 additions and 1 deletions
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13
scripts/kallsyms.c
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@ -35,6 +35,7 @@ struct sym_entry {
static struct sym_entry *table;
static unsigned int table_size, table_cnt;
static unsigned long long _text, _stext, _etext, _sinittext, _einittext;
static unsigned long long _stext_l1, _etext_l1, _stext_l2, _etext_l2;
static int all_symbols = 0;
static char symbol_prefix_char = '\0';
@ -92,6 +93,14 @@ 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, "_stext_l1") == 0)
_stext_l1 = s->addr;
else if (strcmp(sym, "_etext_l1") == 0)
_etext_l1 = s->addr;
else if (strcmp(sym, "_stext_l2") == 0)
_stext_l2 = s->addr;
else if (strcmp(sym, "_etext_l2") == 0)
_etext_l2 = s->addr;
else if (toupper(stype) == 'A')
{
/* Keep these useful absolute symbols */
@ -157,7 +166,9 @@ 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 < _sinittext || s->addr > _einittext)
&& (s->addr < _stext_l1 || s->addr > _etext_l1)
&& (s->addr < _stext_l2 || s->addr > _etext_l2))
return 0;
/* Corner case. Discard any symbols with the same value as
* _etext _einittext; they can move between pass 1 and 2 when