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| author | Mike Frysinger <vapier@gentoo.org> | 2009-09-22 16:44:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:32 -0700 |
| commit | e56770fbc48c1517f620f9f68e3f728e74d52bf5 (patch) | |
| tree | 01080d2cd2ecc0ffab7181ccfe69561fda5f10ad /arch/blackfin | |
| parent | 2a9ad18deb2870a9968f50351a0d4b8cc2a04099 (diff) | |
| download | lwn-e56770fbc48c1517f620f9f68e3f728e74d52bf5.tar.gz lwn-e56770fbc48c1517f620f9f68e3f728e74d52bf5.zip | |
Blackfin: override text/data checking functions
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Robin Getz <rgetz@blackfin.uclinux.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/include/asm/sections.h | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/arch/blackfin/include/asm/sections.h b/arch/blackfin/include/asm/sections.h index e7fd0ecd73f7..ae4dae1e370b 100644 --- a/arch/blackfin/include/asm/sections.h +++ b/arch/blackfin/include/asm/sections.h @@ -1,9 +1,6 @@ #ifndef _BLACKFIN_SECTIONS_H #define _BLACKFIN_SECTIONS_H -/* nothing to see, move along */ -#include <asm-generic/sections.h> - /* only used when MTD_UCLINUX */ extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size; @@ -15,4 +12,39 @@ extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[], _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[], _ebss_l2[], _l2_lma_start[]; +#include <asm/mem_map.h> + +/* Blackfin systems have discontinuous memory map and no virtualized memory */ +static inline int arch_is_kernel_text(unsigned long addr) +{ + return + (L1_CODE_LENGTH && + addr >= (unsigned long)_stext_l1 && + addr < (unsigned long)_etext_l1) + || + (L2_LENGTH && + addr >= (unsigned long)_stext_l2 && + addr < (unsigned long)_etext_l2); +} +#define arch_is_kernel_text(addr) arch_is_kernel_text(addr) + +static inline int arch_is_kernel_data(unsigned long addr) +{ + return + (L1_DATA_A_LENGTH && + addr >= (unsigned long)_sdata_l1 && + addr < (unsigned long)_ebss_l1) + || + (L1_DATA_B_LENGTH && + addr >= (unsigned long)_sdata_b_l1 && + addr < (unsigned long)_ebss_b_l1) + || + (L2_LENGTH && + addr >= (unsigned long)_sdata_l2 && + addr < (unsigned long)_ebss_l2); +} +#define arch_is_kernel_data(addr) arch_is_kernel_data(addr) + +#include <asm-generic/sections.h> + #endif |