switch_to.h File Reference

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Macros
#define	M32R_PUSH_FP   " push fp\n"
#define	M32R_POP_FP   " pop fp\n"
#define	switch_to(prev, next, last)

Macro Definition Documentation

#define M32R_POP_FP   " pop fp\n"

Definition at line 22 of file switch_to.h.

#define M32R_PUSH_FP   " push fp\n"

Definition at line 21 of file switch_to.h.

#define switch_to	(		prev,
			next,
			last
	)

Value:

do { \
    __asm__ __volatile__ ( \
        "   seth    lr, #high(1f)               \n" \
        "   or3 lr, lr, #low(1f)            \n" \
        "   st  lr, @%4  ; store old LR         \n" \
        "   ld  lr, @%5  ; load new LR          \n" \
            M32R_PUSH_FP \
        "   st  sp, @%2  ; store old SP         \n" \
        "   ld  sp, @%3  ; load new SP          \n" \
        "   push    %1  ; store `prev' on new stack     \n" \
        "   jmp lr                  \n" \
        "   .fillinsn                   \n" \
        "1:                         \n" \
        "   pop %0  ; restore `__last' from new stack   \n" \
            M32R_POP_FP \
        : "=r" (last) \
        : "0" (prev), \
          "r" (&(prev->thread.sp)), "r" (&(next->thread.sp)), \
          "r" (&(prev->thread.lr)), "r" (&(next->thread.lr)) \
        : "memory", "lr" \
    ); \
} while(0)

Definition at line 28 of file switch_to.h.