1994-06-24 11:31:16 +00:00
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/* $Id$ */
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1988-06-22 16:57:09 +00:00
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/* The Return Status Block contains, in push order:
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FIL, LIN, LB, PC, PI, rsbcode
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In a trap this is preceeded by:
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FRA, FRASize, FRA_def, trap_nr
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*/
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/* offsets to be added to a local base */
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extern int rsb_rsbcode;
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extern int rsb_PI;
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extern int rsb_PC;
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extern int rsb_LB;
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extern int rsb_LIN;
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extern int rsb_FIL;
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extern int rsbsize;
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/* The last item stored in the Return Status Block is a word containing
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a code describing the type of the RSB.
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*/
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#define RSBMASK 0xfff0
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#define RSBCODE 0x2b90 /* 0rrr rrrr rrrr 0000, r = random */
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#define RSB_STP (RSBCODE + 1) /* in first RSB */
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#define RSB_CAL (RSBCODE + 2) /* in RSB from call */
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#define RSB_RTT (RSBCODE + 3) /* in RSB from returnable trap */
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#define RSB_NRT (RSBCODE + 4) /* in RSB from non-returnable trap */
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#define is_LB(p) ((st_lds(p+rsb_rsbcode, wsize) & RSBMASK) == RSBCODE)
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2019-03-17 14:42:00 +00:00
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void init_rsb(void);
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void pushrsb(int rsbcode);
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int poprsb(int rtt);
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