29 lines
2.7 KiB
C
29 lines
2.7 KiB
C
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/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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****************************************************************************
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****************************************************************************/
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#ifndef __ASM_SH_SYSTEM_32_H
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#define __ASM_SH_SYSTEM_32_H
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#include <linux/types.h>
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struct task_struct *__switch_to(struct task_struct *prev,
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struct task_struct *next);
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#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)
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#define __uses_jump_to_uncached __attribute__ ((__section__ (".uncached.text")))
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#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)
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#define back_to_cached() do { unsigned long __dummy; ctrl_barrier(); __asm__ __volatile__( "mov.l 1f, %0\n\t" "jmp @%0\n\t" " nop\n\t" ".balign 4\n" "1: .long 2f\n" "2:" : "=&r" (__dummy)); } while (0)
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#endif
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