#include <asm/addrspace.h>
#include <asm/cpu-features.h>
+#include <asm/dsp.h>
#include <asm/ptrace.h>
#include <asm/war.h>
#include <asm/interrupt.h>
* does not enforce ordering, since there is no data dependency between
* the read of "a" and the read of "b". Therefore, on some CPUs, such
* as Alpha, "y" could be set to 3 and "x" to 0. Use rmb()
- * in cases like thiswhere there are no data dependencies.
+ * in cases like this where there are no data dependencies.
*/
#define read_barrier_depends() do { } while(0)
struct task_struct;
-#define switch_to(prev,next,last) \
-do { \
- (last) = resume(prev, next, next->thread_info); \
+#define switch_to(prev,next,last) \
+do { \
+ if (cpu_has_dsp) \
+ __save_dsp(prev); \
+ (last) = resume(prev, next, task_thread_info(next)); \
+ if (cpu_has_dsp) \
+ __restore_dsp(current); \
} while(0)
-#define ROT_IN_PIECES \
- " .set noreorder \n" \
- " .set reorder \n"
+/*
+ * On SMP systems, when the scheduler does migration-cost autodetection,
+ * it needs a way to flush as much of the CPU's caches as possible.
+ *
+ * TODO: fill this in!
+ */
+static inline void sched_cacheflush(void)
+{
+}
static inline unsigned long __xchg_u32(volatile int * m, unsigned int val)
{
unsigned long dummy;
__asm__ __volatile__(
+ " .set mips3 \n"
"1: ll %0, %3 # xchg_u32 \n"
+ " .set mips0 \n"
" move %2, %z4 \n"
+ " .set mips3 \n"
" sc %2, %1 \n"
" beqzl %2, 1b \n"
- ROT_IN_PIECES
#ifdef CONFIG_SMP
" sync \n"
#endif
+ " .set mips0 \n"
: "=&r" (retval), "=m" (*m), "=&r" (dummy)
: "R" (*m), "Jr" (val)
: "memory");
unsigned long dummy;
__asm__ __volatile__(
+ " .set mips3 \n"
"1: ll %0, %3 # xchg_u32 \n"
+ " .set mips0 \n"
" move %2, %z4 \n"
+ " .set mips3 \n"
" sc %2, %1 \n"
" beqz %2, 1b \n"
#ifdef CONFIG_SMP
" sync \n"
#endif
+ " .set mips0 \n"
: "=&r" (retval), "=m" (*m), "=&r" (dummy)
: "R" (*m), "Jr" (val)
: "memory");
unsigned long dummy;
__asm__ __volatile__(
+ " .set mips3 \n"
"1: lld %0, %3 # xchg_u64 \n"
" move %2, %z4 \n"
" scd %2, %1 \n"
" beqzl %2, 1b \n"
- ROT_IN_PIECES
#ifdef CONFIG_SMP
" sync \n"
#endif
+ " .set mips0 \n"
: "=&r" (retval), "=m" (*m), "=&r" (dummy)
: "R" (*m), "Jr" (val)
: "memory");
unsigned long dummy;
__asm__ __volatile__(
+ " .set mips3 \n"
"1: lld %0, %3 # xchg_u64 \n"
" move %2, %z4 \n"
" scd %2, %1 \n"
#ifdef CONFIG_SMP
" sync \n"
#endif
+ " .set mips0 \n"
: "=&r" (retval), "=m" (*m), "=&r" (dummy)
: "R" (*m), "Jr" (val)
: "memory");
static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
{
switch (size) {
- case 4:
- return __xchg_u32(ptr, x);
- case 8:
- return __xchg_u64(ptr, x);
+ case 4:
+ return __xchg_u32(ptr, x);
+ case 8:
+ return __xchg_u64(ptr, x);
}
__xchg_called_with_bad_pointer();
return x;
if (cpu_has_llsc && R10000_LLSC_WAR) {
__asm__ __volatile__(
+ " .set push \n"
" .set noat \n"
+ " .set mips3 \n"
"1: ll %0, %2 # __cmpxchg_u32 \n"
" bne %0, %z3, 2f \n"
+ " .set mips0 \n"
" move $1, %z4 \n"
+ " .set mips3 \n"
" sc $1, %1 \n"
" beqzl $1, 1b \n"
- ROT_IN_PIECES
#ifdef CONFIG_SMP
" sync \n"
#endif
"2: \n"
- " .set at \n"
- : "=&r" (retval), "=m" (*m)
+ " .set pop \n"
+ : "=&r" (retval), "=R" (*m)
: "R" (*m), "Jr" (old), "Jr" (new)
: "memory");
} else if (cpu_has_llsc) {
__asm__ __volatile__(
+ " .set push \n"
" .set noat \n"
+ " .set mips3 \n"
"1: ll %0, %2 # __cmpxchg_u32 \n"
" bne %0, %z3, 2f \n"
+ " .set mips0 \n"
" move $1, %z4 \n"
+ " .set mips3 \n"
" sc $1, %1 \n"
" beqz $1, 1b \n"
#ifdef CONFIG_SMP
" sync \n"
#endif
"2: \n"
- " .set at \n"
- : "=&r" (retval), "=m" (*m)
+ " .set pop \n"
+ : "=&r" (retval), "=R" (*m)
: "R" (*m), "Jr" (old), "Jr" (new)
: "memory");
} else {
if (cpu_has_llsc) {
__asm__ __volatile__(
+ " .set push \n"
" .set noat \n"
+ " .set mips3 \n"
"1: lld %0, %2 # __cmpxchg_u64 \n"
" bne %0, %z3, 2f \n"
" move $1, %z4 \n"
" scd $1, %1 \n"
" beqzl $1, 1b \n"
- ROT_IN_PIECES
#ifdef CONFIG_SMP
" sync \n"
#endif
"2: \n"
- " .set at \n"
- : "=&r" (retval), "=m" (*m)
+ " .set pop \n"
+ : "=&r" (retval), "=R" (*m)
: "R" (*m), "Jr" (old), "Jr" (new)
: "memory");
} else if (cpu_has_llsc) {
__asm__ __volatile__(
+ " .set push \n"
" .set noat \n"
+ " .set mips3 \n"
"1: lld %0, %2 # __cmpxchg_u64 \n"
" bne %0, %z3, 2f \n"
" move $1, %z4 \n"
" sync \n"
#endif
"2: \n"
- " .set at \n"
- : "=&r" (retval), "=m" (*m)
+ " .set pop \n"
+ : "=&r" (retval), "=R" (*m)
: "R" (*m), "Jr" (old), "Jr" (new)
: "memory");
} else {
#define cmpxchg(ptr,old,new) ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(old), (unsigned long)(new),sizeof(*(ptr))))
+extern void set_handler (unsigned long offset, void *addr, unsigned long len);
+extern void set_uncached_handler (unsigned long offset, void *addr, unsigned long len);
+extern void *set_vi_handler (int n, void *addr);
+extern void *set_vi_srs_handler (int n, void *addr, int regset);
extern void *set_except_vector(int n, void *addr);
extern void per_cpu_trap_init(void);
-extern NORET_TYPE void __die(const char *, struct pt_regs *, const char *file,
- const char *func, unsigned long line);
-extern void __die_if_kernel(const char *, struct pt_regs *, const char *file,
- const char *func, unsigned long line);
+extern NORET_TYPE void die(const char *, struct pt_regs *);
-#define die(msg, regs) \
- __die(msg, regs, __FILE__ ":", __FUNCTION__, __LINE__)
-#define die_if_kernel(msg, regs) \
- __die_if_kernel(msg, regs, __FILE__ ":", __FUNCTION__, __LINE__)
+static inline void die_if_kernel(const char *str, struct pt_regs *regs)
+{
+ if (unlikely(!user_mode(regs)))
+ die(str, regs);
+}
extern int stop_a_enabled;
projects / linux-2.6-omap-h63xx.git / blobdiff