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db_interface.c revision 1.7 
      1 /*	$NetBSD: db_interface.c,v 1.7 2000/06/11 10:02:15 tsubai Exp $ */
      2 /*	$OpenBSD: db_interface.c,v 1.2 1996/12/28 06:21:50 rahnds Exp $	*/
      3 
      4 #include "opt_ddb.h"
      5 
      6 #include <sys/param.h>
      7 #include <sys/proc.h>
      8 #include <sys/systm.h>
      9 
     10 #include <machine/db_machdep.h>
     11 #include <machine/frame.h>
     12 
     13 #include <ddb/db_sym.h>
     14 #include <ddb/db_command.h>
     15 #include <ddb/db_extern.h>
     16 #include <ddb/db_access.h>
     17 #include <ddb/db_output.h>
     18 #include <ddb/ddbvar.h>
     19 
     20 void
     21 cpu_Debugger()
     22 {
     23 	ddb_trap();
     24 }
     25 
     26 int
     27 ddb_trap_glue(frame)
     28 	struct trapframe *frame;
     29 {
     30 	int msr;
     31 
     32 	if (!(frame->srr1 & PSL_PR)
     33 	    && (frame->exc == EXC_TRC
     34 		|| (frame->exc == EXC_PGM
     35 		    && (frame->srr1 & 0x20000))
     36 		|| frame->exc == EXC_BPT)) {
     37 
     38 		bcopy(frame->fixreg, DDB_REGS->r, 32 * sizeof(u_int32_t));
     39 		DDB_REGS->iar = frame->srr0;
     40 		DDB_REGS->msr = frame->srr1;
     41 
     42 		db_trap(T_BREAKPOINT, 0);
     43 
     44 		bcopy(DDB_REGS->r, frame->fixreg, 32 * sizeof(u_int32_t));
     45 
     46 		return 1;
     47 	}
     48 	return 0;
     49 }
     50