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yaml
---
r: 969
b: refs/heads/master
c: 075d6eb
h: refs/heads/master
i:
  967: 89470a6
v: v3
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David Woodhouse authored and Linus Torvalds committed May 5, 2005
1 parent 43eaf01 commit 2e8ac88
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Showing 5 changed files with 29 additions and 10 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: becf3aec2608d6807a58d0677661cb23c388d67f
refs/heads/master: 075d6eb16d273dab7b7b4b83fcee8bce4ee387ed
2 changes: 2 additions & 0 deletions trunk/arch/ppc/kernel/vmlinux.lds.S
Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,7 @@ SECTIONS
__init_end = .;

. = ALIGN(4096);
_sextratext = .;
__pmac_begin = .;
.pmac.text : { *(.pmac.text) }
.pmac.data : { *(.pmac.data) }
Expand All @@ -171,6 +172,7 @@ SECTIONS
.openfirmware.data : { *(.openfirmware.data) }
. = ALIGN(4096);
__openfirmware_end = .;
_eextratext = .;

__bss_start = .;
.bss :
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2 changes: 2 additions & 0 deletions trunk/include/asm-generic/sections.h
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,8 @@ extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
extern char __init_begin[], __init_end[];
extern char _sinittext[], _einittext[];
extern char _sextratext[] __attribute__((weak));
extern char _eextratext[] __attribute__((weak));
extern char _end[];

#endif /* _ASM_GENERIC_SECTIONS_H_ */
13 changes: 11 additions & 2 deletions trunk/kernel/kallsyms.c
Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,14 @@ static inline int is_kernel_inittext(unsigned long addr)
return 0;
}

static inline int is_kernel_extratext(unsigned long addr)
{
if (addr >= (unsigned long)_sextratext
&& addr <= (unsigned long)_eextratext)
return 1;
return 0;
}

static inline int is_kernel_text(unsigned long addr)
{
if (addr >= (unsigned long)_stext && addr <= (unsigned long)_etext)
Expand Down Expand Up @@ -169,8 +177,9 @@ const char *kallsyms_lookup(unsigned long addr,
namebuf[0] = 0;

if ((all_var && is_kernel(addr)) ||
(!all_var && (is_kernel_text(addr) || is_kernel_inittext(addr)))) {
unsigned long symbol_end=0;
(!all_var && (is_kernel_text(addr) || is_kernel_inittext(addr) ||
is_kernel_extratext(addr)))) {
unsigned long symbol_end = 0;

/* do a binary search on the sorted kallsyms_addresses array */
low = 0;
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20 changes: 13 additions & 7 deletions trunk/scripts/kallsyms.c
Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,7 @@ struct sym_entry {

static struct sym_entry *table;
static int size, cnt;
static unsigned long long _stext, _etext, _sinittext, _einittext;
static unsigned long long _stext, _etext, _sinittext, _einittext, _sextratext, _eextratext;
static int all_symbols = 0;
static char symbol_prefix_char = '\0';

Expand Down Expand Up @@ -139,6 +139,10 @@ 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(s->type) == 'A')
{
/* Keep these useful absolute symbols */
Expand Down Expand Up @@ -194,16 +198,18 @@ 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 < _sextratext || s->addr > _eextratext))
return 0;
/* Corner case. Discard any symbols with the same value as
* _etext or _einittext, they can move between pass 1 and 2
* when the kallsyms data is added. If these symbols move then
* they may get dropped in pass 2, which breaks the kallsyms
* rules.
* _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.
*/
if ((s->addr == _etext && strcmp(s->sym + offset, "_etext")) ||
(s->addr == _einittext && strcmp(s->sym + offset, "_einittext")))
(s->addr == _einittext && strcmp(s->sym + offset, "_einittext")) ||
(s->addr == _eextratext && strcmp(s->sym + offset, "_eextratext")))
return 0;
}

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