db_interface.c revision 1.5.2.2
1 1.5.2.2 bouyer /* $NetBSD: db_interface.c,v 1.5.2.2 2000/12/08 09:30:17 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 1.1 sakamoto void 23 1.5 jdolecek cpu_Debugger() 24 1.1 sakamoto { 25 1.1 sakamoto ddb_trap(); 26 1.1 sakamoto } 27 1.1 sakamoto 28 1.1 sakamoto int 29 1.1 sakamoto ddb_trap_glue(frame) 30 1.1 sakamoto struct trapframe *frame; 31 1.1 sakamoto { 32 1.1 sakamoto int msr; 33 1.1 sakamoto 34 1.1 sakamoto if (!(frame->srr1 & PSL_PR) 35 1.1 sakamoto && (frame->exc == EXC_TRC 36 1.1 sakamoto || (frame->exc == EXC_PGM 37 1.1 sakamoto && (frame->srr1 & 0x20000)) 38 1.1 sakamoto || frame->exc == EXC_BPT)) { 39 1.1 sakamoto 40 1.2 mycroft bcopy(frame->fixreg, DDB_REGS->r, 32 * sizeof(u_int32_t)); 41 1.2 mycroft DDB_REGS->iar = frame->srr0; 42 1.2 mycroft DDB_REGS->msr = frame->srr1; 43 1.1 sakamoto 44 1.1 sakamoto db_trap(T_BREAKPOINT, 0); 45 1.2 mycroft 46 1.2 mycroft bcopy(DDB_REGS->r, frame->fixreg, 32 * sizeof(u_int32_t)); 47 1.1 sakamoto 48 1.1 sakamoto return 1; 49 1.1 sakamoto } 50 1.1 sakamoto return 0; 51 1.5.2.2 bouyer } 52 1.5.2.2 bouyer 53 1.5.2.2 bouyer int 54 1.5.2.2 bouyer kdb_trap(type, v) 55 1.5.2.2 bouyer int type; 56 1.5.2.2 bouyer void *v; 57 1.5.2.2 bouyer { 58 1.5.2.2 bouyer struct trapframe *frame = v; 59 1.5.2.2 bouyer 60 1.5.2.2 bouyer switch (type) { 61 1.5.2.2 bouyer case T_BREAKPOINT: 62 1.5.2.2 bouyer case -1: 63 1.5.2.2 bouyer break; 64 1.5.2.2 bouyer default: 65 1.5.2.2 bouyer if (!db_onpanic && db_recover == 0) 66 1.5.2.2 bouyer return 0; 67 1.5.2.2 bouyer if (db_recover != 0) { 68 1.5.2.2 bouyer db_error("Faulted in DDB; continuing...\n"); 69 1.5.2.2 bouyer /*NOTREACHED*/ 70 1.5.2.2 bouyer } 71 1.5.2.2 bouyer } 72 1.5.2.2 bouyer 73 1.5.2.2 bouyer /* XXX Should switch to kdb's own stack here. */ 74 1.5.2.2 bouyer 75 1.5.2.2 bouyer bcopy(frame->fixreg, DDB_REGS->r, 32 * sizeof(u_int32_t)); 76 1.5.2.2 bouyer DDB_REGS->iar = frame->srr0; 77 1.5.2.2 bouyer DDB_REGS->msr = frame->srr1; 78 1.5.2.2 bouyer 79 1.5.2.2 bouyer db_trap(T_BREAKPOINT, 0); 80 1.5.2.2 bouyer 81 1.5.2.2 bouyer bcopy(DDB_REGS->r, frame->fixreg, 32 * sizeof(u_int32_t)); 82 1.5.2.2 bouyer frame->srr0 = DDB_REGS->iar; 83 1.5.2.2 bouyer frame->srr1 = DDB_REGS->msr; 84 1.5.2.2 bouyer 85 1.5.2.2 bouyer return 1; 86 1.1 sakamoto } 87
Indexes created Tue Sep 30 11:09:46 GMT 2025