33 lines
758 B
C
33 lines
758 B
C
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#define STACK_REFPLUS 1
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#ifdef SLP_EVAL
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#define STACK_MAGIC 0
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#define REGS_TO_SAVE "s0", "s1", "s2", "s3", "s4", "s5", \
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"s6", "s7", "s8", "s9", "s10", "s11", "fs0", "fs1", \
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"fs2", "fs3", "fs4", "fs5", "fs6", "fs7", "fs8", "fs9", \
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"fs10", "fs11"
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static int
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slp_switch(void)
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{
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register int ret;
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register long *stackref, stsizediff;
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__asm__ volatile ("" : : : REGS_TO_SAVE);
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__asm__ volatile ("mv %0, sp" : "=r" (stackref) : );
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{
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SLP_SAVE_STATE(stackref, stsizediff);
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__asm__ volatile (
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"add sp, sp, %0\n\t"
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: /* no outputs */
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: "r" (stsizediff)
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);
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SLP_RESTORE_STATE();
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}
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__asm__ volatile ("" : : : REGS_TO_SAVE);
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__asm__ volatile ("mv %0, zero" : "=r" (ret) : );
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return ret;
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}
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#endif
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