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Annotation of researchv9/cmd/adb/sun/mchrun.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * machine-dependent code for controlling a process
                      3:  * this for vax
                      4:  */
                      5: 
                      6: #include "defs.h"
                      7: #include "bkpt.h"
                      8: #include "regs.h"
                      9: #include "space.h"
                     10: #include <machine/reg.h>
                     11: #include <machine/psl.h>
                     12: 
                     13: 
                     14: /*
                     15:  * install (f != 0) or remove (f == 0) a breakpoint
                     16:  */
                     17: 
                     18: #define        BPT     0x4e4f          /* Trap #15 */
                     19: 
                     20: extern ADDR txtsize;
                     21: bkput(bk, f)
                     22: register BKPT *bk;
                     23: {
                     24:        register int sp;
                     25: 
                     26:        if (bk->loc < txtsize)
                     27:                sp = CORF | INSTSP;
                     28:        else
                     29:                sp = CORF | DATASP;
                     30:        if (f == 0)
                     31:                sput(bk->loc, sp, wtos(bk->ins));
                     32:        else {
                     33:                bk->ins = stow(sget(bk->loc, sp));
                     34:                sput(bk->loc, sp, wtos(BPT));
                     35:                if (errflg) {
                     36:                        printf("cannot set breakpoint: ");
                     37:                        /* stuff */
                     38:                        prints(errflg);
                     39:                }
                     40:        }
                     41: }
                     42: 
                     43: /*
                     44:  * set psl to cause a trap after one instruction
                     45:  * needed for v8; no ioctl to step pc
                     46:  */
                     47: 
                     48: setstep()
                     49: {
                     50: 
                     51:        rput(PS, rget(PS) | PSL_T);
                     52: }

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