db_interface.c revision 1.5.2.3
1 1.5.2.3 bouyer /* $NetBSD: db_interface.c,v 1.5.2.3 2001/02/11 19:11:36 bouyer Exp $ */ 2 1.1 sakamoto /* $OpenBSD: db_interface.c,v 1.2 1996/12/28 06:21:50 rahnds Exp $ */ 3 1.3 jonathan 4 1.3 jonathan #include "opt_ddb.h" 5 1.1 sakamoto 6 1.1 sakamoto #include <sys/param.h> 7 1.1 sakamoto #include <sys/proc.h> 8 1.4 tsubai #include <sys/systm.h> 9 1.1 sakamoto 10 1.1 sakamoto #include <machine/db_machdep.h> 11 1.5.2.1 bouyer #include <machine/frame.h> 12 1.5.2.1 bouyer 13 1.5.2.1 bouyer #include <ddb/db_sym.h> 14 1.5.2.1 bouyer #include <ddb/db_command.h> 15 1.5.2.1 bouyer #include <ddb/db_extern.h> 16 1.5.2.1 bouyer #include <ddb/db_access.h> 17 1.5.2.1 bouyer #include <ddb/db_output.h> 18 1.5.2.1 bouyer #include <ddb/ddbvar.h> 19 1.1 sakamoto 20 1.5.2.2 bouyer extern label_t *db_recover; 21 1.5.2.2 bouyer 22 1.5.2.3 bouyer void ddb_trap __P((void)); /* Call into trap_subr.S */ 23 1.5.2.3 bouyer int ddb_trap_glue __P((struct trapframe *)); /* Called from trap_subr.S */ 24 1.5.2.3 bouyer 25 1.1 sakamoto void 26 1.5 jdolecek cpu_Debugger() 27 1.1 sakamoto { 28 1.1 sakamoto ddb_trap(); 29 1.1 sakamoto } 30 1.1 sakamoto 31 1.1 sakamoto int 32 1.1 sakamoto ddb_trap_glue(frame) 33 1.1 sakamoto struct trapframe *frame; 34 1.1 sakamoto { 35 1.1 sakamoto if (!(frame->srr1 & PSL_PR) 36 1.1 sakamoto && (frame->exc == EXC_TRC 37 1.1 sakamoto || (frame->exc == EXC_PGM 38 1.1 sakamoto && (frame->srr1 & 0x20000)) 39 1.1 sakamoto || frame->exc == EXC_BPT)) { 40 1.1 sakamoto 41 1.2 mycroft bcopy(frame->fixreg, DDB_REGS->r, 32 * sizeof(u_int32_t)); 42 1.2 mycroft DDB_REGS->iar = frame->srr0; 43 1.2 mycroft DDB_REGS->msr = frame->srr1; 44 1.1 sakamoto 45 1.1 sakamoto db_trap(T_BREAKPOINT, 0); 46 1.2 mycroft 47 1.2 mycroft bcopy(DDB_REGS->r, frame->fixreg, 32 * sizeof(u_int32_t)); 48 1.1 sakamoto 49 1.1 sakamoto return 1; 50 1.1 sakamoto } 51 1.1 sakamoto return 0; 52 1.5.2.2 bouyer } 53 1.5.2.2 bouyer 54 1.5.2.2 bouyer int 55 1.5.2.2 bouyer kdb_trap(type, v) 56 1.5.2.2 bouyer int type; 57 1.5.2.2 bouyer void *v; 58 1.5.2.2 bouyer { 59 1.5.2.2 bouyer struct trapframe *frame = v; 60 1.5.2.2 bouyer 61 1.5.2.2 bouyer switch (type) { 62 1.5.2.2 bouyer case T_BREAKPOINT: 63 1.5.2.2 bouyer case -1: 64 1.5.2.2 bouyer break; 65 1.5.2.2 bouyer default: 66 1.5.2.2 bouyer if (!db_onpanic && db_recover == 0) 67 1.5.2.2 bouyer return 0; 68 1.5.2.2 bouyer if (db_recover != 0) { 69 1.5.2.2 bouyer db_error("Faulted in DDB; continuing...\n"); 70 1.5.2.2 bouyer /*NOTREACHED*/ 71 1.5.2.2 bouyer } 72 1.5.2.2 bouyer } 73 1.5.2.2 bouyer 74 1.5.2.2 bouyer /* XXX Should switch to kdb's own stack here. */ 75 1.5.2.2 bouyer 76 1.5.2.2 bouyer bcopy(frame->fixreg, DDB_REGS->r, 32 * sizeof(u_int32_t)); 77 1.5.2.2 bouyer DDB_REGS->iar = frame->srr0; 78 1.5.2.2 bouyer DDB_REGS->msr = frame->srr1; 79 1.5.2.2 bouyer 80 1.5.2.2 bouyer db_trap(T_BREAKPOINT, 0); 81 1.5.2.2 bouyer 82 1.5.2.2 bouyer bcopy(DDB_REGS->r, frame->fixreg, 32 * sizeof(u_int32_t)); 83 1.5.2.2 bouyer frame->srr0 = DDB_REGS->iar; 84 1.5.2.2 bouyer frame->srr1 = DDB_REGS->msr; 85 1.5.2.2 bouyer 86 1.5.2.2 bouyer return 1; 87 1.1 sakamoto } 88
Indexes created Tue Sep 30 11:09:46 GMT 2025