55 lines
1.3 KiB
C
55 lines
1.3 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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* 24-Nov-02 Christian Tismer <tismer@tismer.com>
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* needed to add another magic constant to insure
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* that f in slp_eval_frame(PyFrameObject *f)
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* STACK_REFPLUS will probably be 1 in most cases.
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* gets included into the saved stack area.
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* 06-Oct-02 Gustavo Niemeyer <niemeyer@conectiva.com>
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* Ported to Linux/S390.
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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 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r14", \
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"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
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"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15"
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static int
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slp_switch(void)
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{
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register int *stackref, stsizediff;
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__asm__ volatile ("" : : : REGS_TO_SAVE);
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__asm__ ("lr %0, 15" : "=g" (stackref) : );
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{
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SLP_SAVE_STATE(stackref, stsizediff);
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__asm__ volatile (
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"ar 15, %0"
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: /* no outputs */
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: "g" (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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return 0;
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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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