65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
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/*
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* this is the internal transfer function.
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*
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* HISTORY
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* 20-Sep-14 Matt Madison <madison@bliss-m.org>
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* Re-code the saving of the gp register for MIPS64.
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* 05-Jan-08 Thiemo Seufer <ths@debian.org>
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* Ported from ppc.
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*/
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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 "$16", "$17", "$18", "$19", "$20", "$21", "$22", \
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"$23", "$30"
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static int
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slp_switch(void)
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{
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register int err;
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register int *stackref, stsizediff;
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#ifdef __mips64
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uint64_t gpsave;
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#endif
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__asm__ __volatile__ ("" : : : REGS_TO_SAVE);
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#ifdef __mips64
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__asm__ __volatile__ ("sd $28,%0" : "=m" (gpsave) : : );
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#endif
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__asm__ ("move %0, $29" : "=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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#ifdef __mips64
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"daddu $29, %0\n"
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#else
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"addu $29, %0\n"
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#endif
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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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#ifdef __mips64
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__asm__ __volatile__ ("ld $28,%0" : : "m" (gpsave) : );
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#endif
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__asm__ __volatile__ ("" : : : REGS_TO_SAVE);
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__asm__ __volatile__ ("move %0, $0" : "=r" (err));
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return err;
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}
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#endif
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/*
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* further self-processing support
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*/
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/*
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* if you want to add self-inspection tools, place them
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* here. See the x86_msvc for the necessary defines.
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* These features are highly experimental und not
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* essential yet.
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*/
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