File: switch_alpha_unix.h

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/*
 * this is the internal transfer function.
 *
 * HISTORY
 * 2012-11-01 M. J. Cree
 *      Ported from extant code for other arches.
 */

#define STACK_REFPLUS 1

#ifdef SLP_EVAL

#define STACK_MAGIC 0


#define REGS_TO_SAVE "$9", "$10", "$11", "$12", "$13", "$14", "$15", \
       "$26"

static int
slp_switch(void)
{
    register int *stackref, stsizediff;
    __asm__ __volatile__ ("" : : : REGS_TO_SAVE);
    __asm__ ("mov $sp, %0" : "=r" (stackref) : );
    {
        SLP_SAVE_STATE(stackref, stsizediff);
        __asm__ __volatile__ (
            "addq $sp, %0, $sp\n"
            "addq $fp, %0, $fp\n"
            : /* no outputs */
            : "r" (stsizediff)
            );
        SLP_RESTORE_STATE();
    }
    __asm__ __volatile__ ("" : : : REGS_TO_SAVE);
    return 0;
}

#endif