/*
* switch_to() should switch tasks to task nr n, first
*/
-#define switch_to(prev, next, last) \
-do { \
- register u32 *__ts1 __asm__ ("r1") = &prev->thread.sp; \
- register u32 *__ts2 __asm__ ("r2") = &prev->thread.pc; \
- register u32 *__ts4 __asm__ ("r4") = (u32 *)prev; \
- register u32 *__ts5 __asm__ ("r5") = (u32 *)next; \
- register u32 *__ts6 __asm__ ("r6") = &next->thread.sp; \
- register u32 __ts7 __asm__ ("r7") = next->thread.pc; \
- struct task_struct *__last; \
- \
- __asm__ __volatile__ ( \
- ".balign 4\n\t" \
- "stc.l gbr, @-r15\n\t" \
- "sts.l pr, @-r15\n\t" \
- "mov.l r8, @-r15\n\t" \
- "mov.l r9, @-r15\n\t" \
- "mov.l r10, @-r15\n\t" \
- "mov.l r11, @-r15\n\t" \
- "mov.l r12, @-r15\n\t" \
- "mov.l r13, @-r15\n\t" \
- "mov.l r14, @-r15\n\t" \
- "mov.l r15, @r1\t! save SP\n\t" \
- "mov.l @r6, r15\t! change to new stack\n\t" \
- "mova 1f, %0\n\t" \
- "mov.l %0, @r2\t! save PC\n\t" \
- "mov.l 2f, %0\n\t" \
- "jmp @%0\t! call __switch_to\n\t" \
- " lds r7, pr\t! with return to new PC\n\t" \
- ".balign 4\n" \
- "2:\n\t" \
- ".long __switch_to\n" \
- "1:\n\t" \
- "mov.l @r15+, r14\n\t" \
- "mov.l @r15+, r13\n\t" \
- "mov.l @r15+, r12\n\t" \
- "mov.l @r15+, r11\n\t" \
- "mov.l @r15+, r10\n\t" \
- "mov.l @r15+, r9\n\t" \
- "mov.l @r15+, r8\n\t" \
- "lds.l @r15+, pr\n\t" \
- "ldc.l @r15+, gbr\n\t" \
- : "=z" (__last) \
- : "r" (__ts1), "r" (__ts2), "r" (__ts4), \
- "r" (__ts5), "r" (__ts6), "r" (__ts7) \
- : "r3", "t"); \
- \
- last = __last; \
+#define switch_to(prev, next, last) \
+do { \
+ register u32 *__ts1 __asm__ ("r1") = (u32 *)&prev->thread.sp; \
+ register u32 *__ts2 __asm__ ("r2") = (u32 *)&prev->thread.pc; \
+ register u32 *__ts4 __asm__ ("r4") = (u32 *)prev; \
+ register u32 *__ts5 __asm__ ("r5") = (u32 *)next; \
+ register u32 *__ts6 __asm__ ("r6") = (u32 *)&next->thread.sp; \
+ register u32 __ts7 __asm__ ("r7") = next->thread.pc; \
+ struct task_struct *__last; \
+ \
+ __asm__ __volatile__ ( \
+ ".balign 4\n\t" \
+ "stc.l gbr, @-r15\n\t" \
+ "sts.l pr, @-r15\n\t" \
+ "mov.l r8, @-r15\n\t" \
+ "mov.l r9, @-r15\n\t" \
+ "mov.l r10, @-r15\n\t" \
+ "mov.l r11, @-r15\n\t" \
+ "mov.l r12, @-r15\n\t" \
+ "mov.l r13, @-r15\n\t" \
+ "mov.l r14, @-r15\n\t" \
+ "mov.l r15, @r1\t! save SP\n\t" \
+ "mov.l @r6, r15\t! change to new stack\n\t" \
+ "mova 1f, %0\n\t" \
+ "mov.l %0, @r2\t! save PC\n\t" \
+ "mov.l 2f, %0\n\t" \
+ "jmp @%0\t! call __switch_to\n\t" \
+ " lds r7, pr\t! with return to new PC\n\t" \
+ ".balign 4\n" \
+ "2:\n\t" \
+ ".long __switch_to\n" \
+ "1:\n\t" \
+ "mov.l @r15+, r14\n\t" \
+ "mov.l @r15+, r13\n\t" \
+ "mov.l @r15+, r12\n\t" \
+ "mov.l @r15+, r11\n\t" \
+ "mov.l @r15+, r10\n\t" \
+ "mov.l @r15+, r9\n\t" \
+ "mov.l @r15+, r8\n\t" \
+ "lds.l @r15+, pr\n\t" \
+ "ldc.l @r15+, gbr\n\t" \
+ : "=z" (__last) \
+ : "r" (__ts1), "r" (__ts2), "r" (__ts4), \
+ "r" (__ts5), "r" (__ts6), "r" (__ts7) \
+ : "r3", "t"); \
+ \
+ last = __last; \
} while (0)
+#define __uses_jump_to_uncached __attribute__ ((__section__ (".uncached.text")))
+
/*
- * Jump to P2 area.
- * When handling TLB or caches, we need to do it from P2 area.
+ * Jump to uncached area.
+ * When handling TLB or caches, we need to do it from an uncached area.
*/
-#define jump_to_P2() \
-do { \
- unsigned long __dummy; \
- __asm__ __volatile__( \
- "mov.l 1f, %0\n\t" \
- "or %1, %0\n\t" \
- "jmp @%0\n\t" \
- " nop\n\t" \
- ".balign 4\n" \
- "1: .long 2f\n" \
- "2:" \
- : "=&r" (__dummy) \
- : "r" (0x20000000)); \
+#define jump_to_uncached() \
+do { \
+ unsigned long __dummy; \
+ \
+ __asm__ __volatile__( \
+ "mova 1f, %0\n\t" \
+ "add %1, %0\n\t" \
+ "jmp @%0\n\t" \
+ " nop\n\t" \
+ ".balign 4\n" \
+ "1:" \
+ : "=&z" (__dummy) \
+ : "r" (cached_to_uncached)); \
} while (0)
/*
- * Back to P1 area.
+ * Back to cached area.
*/
-#define back_to_P1() \
+#define back_to_cached() \
do { \
unsigned long __dummy; \
ctrl_barrier(); \
projects / ~andy / linux / blobdiff