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