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| author | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-08 13:22:55 +1100 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2009-01-08 13:22:55 +1100 |
| commit | 6206aa8b2b9a45b4cf3ee31b7209b014be349fd9 (patch) | |
| tree | 72c4223a2cc21bf055948eadb3b314ed0568ae9d /arch/blackfin/include/asm/processor.h | |
| parent | 95f8e302c04c0b0c6de35ab399a5551605eeb006 (diff) | |
| parent | 9e42d0cf5020aaf217433cad1a224745241d212a (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/blackfin/include/asm/processor.h')
| -rw-r--r-- | arch/blackfin/include/asm/processor.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h index e3e9b41fa8d..0eece23b41c 100644 --- a/arch/blackfin/include/asm/processor.h +++ b/arch/blackfin/include/asm/processor.h @@ -24,6 +24,14 @@ static inline void wrusp(unsigned long usp) __asm__ __volatile__("usp = %0;\n\t"::"da"(usp)); } +static inline unsigned long __get_SP(void) +{ + unsigned long sp; + + __asm__ __volatile__("%0 = sp;\n\t" : "=da"(sp)); + return sp; +} + /* * User space process size: 1st byte beyond user address space. * Fairly meaningless on nommu. Parts of user programs can be scattered @@ -57,6 +65,7 @@ struct thread_struct { * pass the data segment into user programs if it exists, * it can't hurt anything as far as I can tell */ +#ifndef CONFIG_SMP #define start_thread(_regs, _pc, _usp) \ do { \ set_fs(USER_DS); \ @@ -70,6 +79,16 @@ do { \ sizeof(*L1_SCRATCH_TASK_INFO)); \ wrusp(_usp); \ } while(0) +#else +#define start_thread(_regs, _pc, _usp) \ +do { \ + set_fs(USER_DS); \ + (_regs)->pc = (_pc); \ + if (current->mm) \ + (_regs)->p5 = current->mm->start_data; \ + wrusp(_usp); \ +} while (0) +#endif /* Forward declaration, a strange C thing */ struct task_struct; @@ -106,7 +125,8 @@ unsigned long get_wchan(struct task_struct *p); eip; }) #define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) -#define cpu_relax() barrier() +#define cpu_relax() smp_mb() + /* Get the Silicon Revision of the chip */ static inline uint32_t __pure bfin_revid(void) @@ -137,7 +157,11 @@ static inline uint32_t __pure bfin_revid(void) static inline uint16_t __pure bfin_cpuid(void) { return (bfin_read_CHIPID() & CHIPID_FAMILY) >> 12; +} +static inline uint32_t __pure bfin_dspid(void) +{ + return bfin_read_DSPID(); } static inline uint32_t __pure bfin_compiled_revid(void) @@ -154,6 +178,8 @@ static inline uint32_t __pure bfin_compiled_revid(void) return 4; #elif defined(CONFIG_BF_REV_0_5) return 5; +#elif defined(CONFIG_BF_REV_0_6) + return 6; #elif defined(CONFIG_BF_REV_ANY) return 0xffff; #else |