Commit 028f0426 authored by Robin Getz's avatar Robin Getz Committed by Sam Ravnborg
Browse files

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: default avatarRobin Getz <robin.getz@analog.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 2185a5ec

scripts/kallsyms.c

+12 −1
Original line number Diff line number Diff line
@@ -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

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