81 lines
1.3 KiB
C
81 lines
1.3 KiB
C
#include "u.h"
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#include "../port/lib.h"
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#include "mem.h"
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#include "dat.h"
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#include "fns.h"
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#include "io.h"
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#include "ureg.h"
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static char*
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getline(void)
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{
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static char buf[128];
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int i, c;
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for(i = 0; i < sizeof(buf)-1 && (c=uartgetc()) != '\n'; i++)
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buf[i] = c;
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buf[i] = 0;
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return buf;
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}
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static void*
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addr(char *s, Ureg *ureg, char **p)
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{
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uvlong a;
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a = strtoull(s, p, 16);
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if(a < sizeof(Ureg))
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return ((uchar*)ureg)+a;
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return (void*)(uintptr)a;
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}
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static void
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talkrdb(Ureg *ureg)
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{
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uchar *a;
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char *p, *req;
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if(consuart == nil)
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return;
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if(serialoq != nil){
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qhangup(serialoq, nil);
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if(consuart->phys->disable != nil)
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consuart->phys->disable(consuart);
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if(consuart->phys->enable != nil)
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consuart->phys->enable(consuart, 0);
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serialoq = nil;
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}
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kprintoq = nil; /* turn off /dev/kprint if active */
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iprint("Edebugger reset\n");
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for(;;){
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req = getline();
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switch(*req){
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case 'r':
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a = addr(req+1, ureg, nil);
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iprint("R%.8zux %.2ux %.2ux %.2ux %.2ux\n",
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(uintptr)a, a[0], a[1], a[2], a[3]);
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break;
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case 'w':
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a = addr(req+1, ureg, &p);
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*(ulong*)a = strtoul(p, nil, 16);
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iprint("W\n");
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break;
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default:
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iprint("Eunknown message\n");
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break;
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}
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}
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}
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void
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rdb(void)
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{
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splhi();
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iprint("rdb...");
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callwithureg(talkrdb);
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}
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