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| author | Jamie Iles <jamie.iles@oracle.com> | 2013-11-12 15:06:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 12:09:00 +0900 |
| commit | 59c36455d061e200f386e1817362f6afd6265b6a (patch) | |
| tree | ecaf2b9b1282e3ecc24198c56005f79a16740ad1 /scripts/sortextable.c | |
| parent | a2529ad9e5bed1935ac30cbe5b53de805485b171 (diff) | |
| download | linux-stable-59c36455d061e200f386e1817362f6afd6265b6a.tar.gz linux-stable-59c36455d061e200f386e1817362f6afd6265b6a.tar.bz2 linux-stable-59c36455d061e200f386e1817362f6afd6265b6a.zip | |
scripts/sortextable: support objects with more than 64K sections.
Building with a large config and -ffunction-sections results in a large
number of sections and sortextable needs to be able to handle that.
Implement support for > 64K sections as modpost does.
Signed-off-by: Jamie Iles <jamie.iles@oracle.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/sortextable.c')
| -rw-r--r-- | scripts/sortextable.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/scripts/sortextable.c b/scripts/sortextable.c index 7c2310c5b996..5f7a8b663cb9 100644 --- a/scripts/sortextable.c +++ b/scripts/sortextable.c @@ -152,6 +152,30 @@ static void (*w2)(uint16_t, uint16_t *); typedef void (*table_sort_t)(char *, int); +/* + * Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of + * the way to -256..-1, to avoid conflicting with real section + * indices. + */ +#define SPECIAL(i) ((i) - (SHN_HIRESERVE + 1)) + +static inline int is_shndx_special(unsigned int i) +{ + return i != SHN_XINDEX && i >= SHN_LORESERVE && i <= SHN_HIRESERVE; +} + +/* Accessor for sym->st_shndx, hides ugliness of "64k sections" */ +static inline unsigned int get_secindex(unsigned int shndx, + unsigned int sym_offs, + const Elf32_Word *symtab_shndx_start) +{ + if (is_shndx_special(shndx)) + return SPECIAL(shndx); + if (shndx != SHN_XINDEX) + return shndx; + return r(&symtab_shndx_start[sym_offs]); +} + /* 32 bit and 64 bit are very similar */ #include "sortextable.h" #define SORTEXTABLE_64 |