diff options
33 files changed, 95 insertions, 48 deletions
diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c index 24226f7..24e9ec8 100644 --- a/sys/amd64/amd64/machdep.c +++ b/sys/amd64/amd64/machdep.c @@ -1277,7 +1277,8 @@ hammer_time(u_int64_t modulep, u_int64_t physfree) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger"); + kdb_enter(KDB_WHY_BOOTFLAGS, + "Boot flags requested debugger"); #endif identify_cpu(); /* Final stage of CPU initialization */ diff --git a/sys/amd64/amd64/mp_watchdog.c b/sys/amd64/amd64/mp_watchdog.c index b6ac777..1803270 100644 --- a/sys/amd64/amd64/mp_watchdog.c +++ b/sys/amd64/amd64/mp_watchdog.c @@ -203,7 +203,7 @@ ap_watchdog(u_int cpuid) if (watchdog_nmi) watchdog_ipi_nmi(); else - kdb_enter("mp_watchdog"); + kdb_enter(KDB_WHY_WATCHDOG, "mp_watchdog"); } } bcopy(old_pcomm, p->p_comm, MAXCOMLEN + 1); diff --git a/sys/arm/at91/uart_dev_at91usart.c b/sys/arm/at91/uart_dev_at91usart.c index 8862589..f87dcaa 100644 --- a/sys/arm/at91/uart_dev_at91usart.c +++ b/sys/arm/at91/uart_dev_at91usart.c @@ -508,7 +508,7 @@ at91_rx_put(struct uart_softc *sc, int key) #if defined(KDB) && defined(ALT_BREAK_TO_DEBUGGER) if (sc->sc_sysdev != NULL && sc->sc_sysdev->type == UART_DEV_CONSOLE) { if (kdb_alt_break(key, &sc->sc_altbrk)) - kdb_enter("Break sequence to console"); + kdb_enter(KDB_WHY_BREAK, "Break sequence to console"); } #endif uart_rx_put(sc, key); diff --git a/sys/cam/scsi/scsi_low.h b/sys/cam/scsi/scsi_low.h index 4dfa602..8d6dbed 100644 --- a/sys/cam/scsi/scsi_low.h +++ b/sys/cam/scsi/scsi_low.h @@ -87,7 +87,7 @@ #ifdef __FreeBSD__ #undef MSG_IDENTIFY -#define SCSI_LOW_DEBUGGER(dev) kdb_enter(dev) +#define SCSI_LOW_DEBUGGER(dev) kdb_enter(KDB_WHY_CAM, dev) #define SCSI_LOW_DELAY(mu) DELAY((mu)) #define SCSI_LOW_SPLSCSI splcam #define SCSI_LOW_BZERO(pt, size) bzero((pt), (size)) diff --git a/sys/compat/ndis/subr_ntoskrnl.c b/sys/compat/ndis/subr_ntoskrnl.c index 367d9f6..dd76d25 100644 --- a/sys/compat/ndis/subr_ntoskrnl.c +++ b/sys/compat/ndis/subr_ntoskrnl.c @@ -3632,7 +3632,7 @@ DbgBreakPoint(void) #if __FreeBSD_version < 502113 Debugger("DbgBreakPoint(): breakpoint"); #else - kdb_enter("DbgBreakPoint(): breakpoint"); + kdb_enter(KDB_WHY_NDIS, "DbgBreakPoint(): breakpoint"); #endif } diff --git a/sys/dev/acpica/Osd/OsdDebug.c b/sys/dev/acpica/Osd/OsdDebug.c index b127181..27b94a0 100644 --- a/sys/dev/acpica/Osd/OsdDebug.c +++ b/sys/dev/acpica/Osd/OsdDebug.c @@ -73,13 +73,13 @@ AcpiOsSignal(UINT32 Function, void *Info) printf("ACPI fatal signal, type 0x%x code 0x%x argument 0x%x", fatal->Type, fatal->Code, fatal->Argument); #ifdef ACPI_DEBUG - kdb_enter("AcpiOsSignal"); + kdb_enter(KDB_WHY_ACPI, "AcpiOsSignal"); #endif break; case ACPI_SIGNAL_BREAKPOINT: #ifdef ACPI_DEBUG - kdb_enter((char *)Info); + kdb_enter(KDB_WHY_ACPI, (char *)Info); #endif break; diff --git a/sys/dev/dcons/dcons_os.c b/sys/dev/dcons/dcons_os.c index d47515c..7eb89aa 100644 --- a/sys/dev/dcons/dcons_os.c +++ b/sys/dev/dcons/dcons_os.c @@ -207,11 +207,13 @@ dcons_check_break(struct dcons_softc *dc, int c) #ifdef GDB if (gdb_cur == &dcons_gdb_dbgport) { kdb_dbbe_select("gdb"); - kdb_enter("Break sequence on dcons gdb port"); + kdb_enter(KDB_WHY_BREAK, + "Break sequence on dcons gdb port"); } #endif } else - kdb_enter("Break sequence on dcons console port"); + kdb_enter(KDB_WHY_BREAK, + "Break sequence on dcons console port"); } #else switch (dc->brk_state) { diff --git a/sys/dev/ofw/ofw_console.c b/sys/dev/ofw/ofw_console.c index 0d1133f..7d6f5eb 100644 --- a/sys/dev/ofw/ofw_console.c +++ b/sys/dev/ofw/ofw_console.c @@ -282,7 +282,7 @@ ofw_cngetc(struct consdev *cp) if (OF_read(stdin, &ch, 1) > 0) { #if defined(KDB) && defined(ALT_BREAK_TO_DEBUGGER) if (kdb_alt_break(ch, &alt_break_state)) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, "Break sequence on console"); #endif return (ch); } diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c index 3db7f59..a62b411 100644 --- a/sys/dev/sio/sio.c +++ b/sys/dev/sio/sio.c @@ -1502,7 +1502,8 @@ siointr1(com) #ifdef ALT_BREAK_TO_DEBUGGER if (com->unit == comconsole && kdb_alt_break(recv_data, &com->alt_brk_state) != 0) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, + "Break sequence on console"); #endif /* ALT_BREAK_TO_DEBUGGER */ #endif /* KDB */ if (line_status & (LSR_BI | LSR_FE | LSR_PE)) { @@ -1521,7 +1522,8 @@ siointr1(com) if (line_status & LSR_BI) { #if defined(KDB) && defined(BREAK_TO_DEBUGGER) if (com->unit == comconsole) { - kdb_enter("Line break on console"); + kdb_enter(KDB_WHY_BREAK, + "Line break on console"); goto cont; } #endif diff --git a/sys/dev/syscons/syscons.c b/sys/dev/syscons/syscons.c index 04ad041..b749895 100644 --- a/sys/dev/syscons/syscons.c +++ b/sys/dev/syscons/syscons.c @@ -3373,7 +3373,7 @@ next_code: case DBG: #ifndef SC_DISABLE_KDBKEY if (enable_kdbkey) - kdb_enter("manual escape to debugger"); + kdb_enter(KDB_WHY_BREAK, "manual escape to debugger"); #endif break; diff --git a/sys/dev/uart/uart_core.c b/sys/dev/uart/uart_core.c index f991278..b4730418 100644 --- a/sys/dev/uart/uart_core.c +++ b/sys/dev/uart/uart_core.c @@ -122,7 +122,7 @@ uart_intr_break(void *arg) #if defined(KDB) && defined(BREAK_TO_DEBUGGER) if (sc->sc_sysdev != NULL && sc->sc_sysdev->type == UART_DEV_CONSOLE) { - kdb_enter("Line break on console"); + kdb_enter(KDB_WHY_BREAK, "Line break on console"); return (0); } #endif @@ -176,7 +176,8 @@ uart_intr_rxready(void *arg) if (sc->sc_sysdev != NULL && sc->sc_sysdev->type == UART_DEV_CONSOLE) { while (rxp != sc->sc_rxput) { if (kdb_alt_break(sc->sc_rxbuf[rxp++], &sc->sc_altbrk)) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, + "Break sequence on console"); if (rxp == sc->sc_rxbufsz) rxp = 0; } diff --git a/sys/fs/unionfs/union_subr.c b/sys/fs/unionfs/union_subr.c index 05dd077..4ff6308 100644 --- a/sys/fs/unionfs/union_subr.c +++ b/sys/fs/unionfs/union_subr.c @@ -1062,7 +1062,8 @@ unionfs_checkuppervp(struct vnode *vp, char *fil, int lno) if (vp->v_op != unionfs_vnodeop_p) { printf("unionfs_checkuppervp: on non-unionfs-node.\n"); #ifdef KDB - kdb_enter("unionfs_checkuppervp: on non-unionfs-node.\n"); + kdb_enter(KDB_WHY_UNIONFS, + "unionfs_checkuppervp: on non-unionfs-node.\n"); #endif panic("unionfs_checkuppervp"); }; @@ -1081,7 +1082,8 @@ unionfs_checklowervp(struct vnode *vp, char *fil, int lno) if (vp->v_op != unionfs_vnodeop_p) { printf("unionfs_checklowervp: on non-unionfs-node.\n"); #ifdef KDB - kdb_enter("unionfs_checklowervp: on non-unionfs-node.\n"); + kdb_enter(KDB_WHY_UNIONFS, + "unionfs_checklowervp: on non-unionfs-node.\n"); #endif panic("unionfs_checklowervp"); }; diff --git a/sys/i386/i386/machdep.c b/sys/i386/i386/machdep.c index 01fbf1c..202e2a9 100644 --- a/sys/i386/i386/machdep.c +++ b/sys/i386/i386/machdep.c @@ -2275,7 +2275,7 @@ init386(first) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger"); + kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); #endif finishidentcpu(); /* Final stage of CPU initialization */ diff --git a/sys/i386/i386/mp_watchdog.c b/sys/i386/i386/mp_watchdog.c index b6ac777..1803270 100644 --- a/sys/i386/i386/mp_watchdog.c +++ b/sys/i386/i386/mp_watchdog.c @@ -203,7 +203,7 @@ ap_watchdog(u_int cpuid) if (watchdog_nmi) watchdog_ipi_nmi(); else - kdb_enter("mp_watchdog"); + kdb_enter(KDB_WHY_WATCHDOG, "mp_watchdog"); } } bcopy(old_pcomm, p->p_comm, MAXCOMLEN + 1); diff --git a/sys/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c index 3c44b2e..e6e5d7f 100644 --- a/sys/ia64/ia64/machdep.c +++ b/sys/ia64/ia64/machdep.c @@ -824,7 +824,8 @@ ia64_init(void) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger\n"); + kdb_enter(KDB_WHY_BOOTFLAGS, + "Boot flags requested debugger\n"); #endif ia64_set_tpr(0); diff --git a/sys/kern/kern_clock.c b/sys/kern/kern_clock.c index 217e2ef..fb0ca7e 100644 --- a/sys/kern/kern_clock.c +++ b/sys/kern/kern_clock.c @@ -637,7 +637,7 @@ watchdog_fire(void) #if defined(KDB) && !defined(KDB_UNATTENDED) kdb_backtrace(); - kdb_enter("watchdog timeout"); + kdb_enter(KDB_WHY_WATCHDOG, "watchdog timeout"); #else panic("watchdog timeout"); #endif diff --git a/sys/kern/kern_shutdown.c b/sys/kern/kern_shutdown.c index 088e781..baeed23 100644 --- a/sys/kern/kern_shutdown.c +++ b/sys/kern/kern_shutdown.c @@ -544,7 +544,7 @@ panic(const char *fmt, ...) if (newpanic && trace_on_panic) kdb_backtrace(); if (debugger_on_panic) - kdb_enter("panic"); + kdb_enter(KDB_WHY_PANIC, "panic"); #ifdef RESTARTABLE_PANICS /* See if the user aborted the panic, in which case we continue. */ if (panicstr == NULL) { diff --git a/sys/kern/subr_kdb.c b/sys/kern/subr_kdb.c index 0ab79fb..8b66a58 100644 --- a/sys/kern/subr_kdb.c +++ b/sys/kern/subr_kdb.c @@ -97,6 +97,11 @@ SYSCTL_INT(_debug_kdb, OID_AUTO, stop_cpus, CTLTYPE_INT | CTLFLAG_RW, TUNABLE_INT("debug.kdb.stop_cpus", &kdb_stop_cpus); #endif +/* + * Flag to indicate to debuggers why the debugger was entered. + */ +const char * volatile kdb_why = KDB_WHY_UNSET; + static int kdb_sysctl_available(SYSCTL_HANDLER_ARGS) { @@ -163,7 +168,7 @@ kdb_sysctl_enter(SYSCTL_HANDLER_ARGS) return (error); if (kdb_active) return (EBUSY); - kdb_enter("sysctl debug.kdb.enter"); + kdb_enter(KDB_WHY_SYSCTL, "sysctl debug.kdb.enter"); return (0); } @@ -295,17 +300,20 @@ kdb_dbbe_select(const char *name) * Enter the currently selected debugger. If a message has been provided, * it is printed first. If the debugger does not support the enter method, * it is entered by using breakpoint(), which enters the debugger through - * kdb_trap(). + * kdb_trap(). The 'why' argument will contain a more mechanically usable + * string than 'msg', and is relied upon by DDB scripting to identify the + * reason for entering the debugger so that the right script can be run. */ - void -kdb_enter(const char *msg) +kdb_enter(const char *why, const char *msg) { if (kdb_dbbe != NULL && kdb_active == 0) { if (msg != NULL) printf("KDB: enter: %s\n", msg); + kdb_why = why; breakpoint(); + kdb_why = KDB_WHY_UNSET; } } diff --git a/sys/kern/subr_witness.c b/sys/kern/subr_witness.c index 3019a7a..c5402c7 100644 --- a/sys/kern/subr_witness.c +++ b/sys/kern/subr_witness.c @@ -1123,7 +1123,7 @@ debugger: if (witness_trace) kdb_backtrace(); if (witness_kdb) - kdb_enter(__func__); + kdb_enter(KDB_WHY_WITNESS, __func__); #endif } @@ -1396,7 +1396,7 @@ witness_warn(int flags, struct lock_object *lock, const char *fmt, ...) panic("witness_warn"); #ifdef KDB else if (witness_kdb && n) - kdb_enter(__func__); + kdb_enter(KDB_WHY_WITNESS, __func__); else if (witness_trace && n) kdb_backtrace(); #endif diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 0e3a0ac..e912006 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -3456,7 +3456,7 @@ vfs_badlock(const char *msg, const char *str, struct vnode *vp) if (vfs_badlock_print) printf("%s: %p %s\n", str, (void *)vp, msg); if (vfs_badlock_ddb) - kdb_enter("lock violation"); + kdb_enter(KDB_WHY_VFSLOCK, "lock violation"); } void @@ -3576,7 +3576,7 @@ vop_strategy_pre(void *ap) printf( "VOP_STRATEGY: bp is not locked but should be\n"); if (vfs_badlock_ddb) - kdb_enter("lock violation"); + kdb_enter(KDB_WHY_VFSLOCK, "lock violation"); } #endif } diff --git a/sys/netgraph/ng_base.c b/sys/netgraph/ng_base.c index ad0bec6..47fde60 100644 --- a/sys/netgraph/ng_base.c +++ b/sys/netgraph/ng_base.c @@ -3465,12 +3465,12 @@ ng_setisr(node_p node) do { \ if (NGI_NODE(item) ) { \ printf("item already has node"); \ - kdb_enter("has node"); \ + kdb_enter(KDB_WHY_NETGRAPH, "has node"); \ NGI_CLR_NODE(item); \ } \ if (NGI_HOOK(item) ) { \ printf("item already has hook"); \ - kdb_enter("has hook"); \ + kdb_enter(KDB_WHY_NETGRAPH, "has hook"); \ NGI_CLR_HOOK(item); \ } \ } while (0) diff --git a/sys/pc98/cbus/sio.c b/sys/pc98/cbus/sio.c index 648cb04..6533a53 100644 --- a/sys/pc98/cbus/sio.c +++ b/sys/pc98/cbus/sio.c @@ -2369,7 +2369,8 @@ more_intr: #ifdef ALT_BREAK_TO_DEBUGGER if (com->unit == comconsole && kdb_alt_break(recv_data, &com->alt_brk_state) != 0) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, + "Break sequence on console"); #endif /* ALT_BREAK_TO_DEBUGGER */ #endif /* KDB */ if (line_status & (LSR_BI | LSR_FE | LSR_PE)) { @@ -2388,7 +2389,8 @@ more_intr: if (line_status & LSR_BI) { #if defined(KDB) && defined(BREAK_TO_DEBUGGER) if (com->unit == comconsole) { - kdb_enter("Line break on console"); + kdb_enter(KDB_WHY_BREAK, + "Line break on console"); goto cont; } #endif diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c index 1472af0..62d313f 100644 --- a/sys/pc98/pc98/machdep.c +++ b/sys/pc98/pc98/machdep.c @@ -2061,7 +2061,7 @@ init386(first) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger"); + kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); #endif finishidentcpu(); /* Final stage of CPU initialization */ diff --git a/sys/powerpc/aim/machdep.c b/sys/powerpc/aim/machdep.c index 7cea2c0..16da70e 100644 --- a/sys/powerpc/aim/machdep.c +++ b/sys/powerpc/aim/machdep.c @@ -398,7 +398,8 @@ powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, void *mdp) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger"); + kdb_enter(KDB_WHY_BOOTFLAGS, + "Boot flags requested debugger"); #endif } diff --git a/sys/powerpc/powermac/pswitch.c b/sys/powerpc/powermac/pswitch.c index 62777eb..c437392 100644 --- a/sys/powerpc/powermac/pswitch.c +++ b/sys/powerpc/powermac/pswitch.c @@ -139,6 +139,6 @@ pswitch_intr(void *arg) dev = (device_t)arg; - kdb_enter(device_get_nameunit(dev)); + kdb_enter(KDB_WHY_POWERPC, device_get_nameunit(dev)); return (FILTER_HANDLED); } diff --git a/sys/security/mac_test/mac_test.c b/sys/security/mac_test/mac_test.c index 32042e6..e28e4c3 100644 --- a/sys/security/mac_test/mac_test.c +++ b/sys/security/mac_test/mac_test.c @@ -117,7 +117,7 @@ SYSCTL_NODE(_security_mac_test, OID_AUTO, counter, CTLFLAG_RW, 0, #define COUNTER_INC(variable) atomic_add_int(&counter_##variable, 1) #ifdef KDB -#define DEBUGGER(func, string) kdb_enter((string)) +#define DEBUGGER(func, string) kdb_enter(KDB_WHY_MAC, (string)) #else #define DEBUGGER(func, string) printf("mac_test: %s: %s\n", (func), (string)) #endif diff --git a/sys/sparc64/pci/psycho.c b/sys/sparc64/pci/psycho.c index 9f5632f..846afdd 100644 --- a/sys/sparc64/pci/psycho.c +++ b/sys/sparc64/pci/psycho.c @@ -850,7 +850,7 @@ psycho_powerfail(void *arg) #ifdef DEBUGGER_ON_POWERFAIL struct psycho_softc *sc = arg; - kdb_enter("powerfail"); + kdb_enter(KDB_WHY_POWERFAIL, "powerfail"); #else static int shutdown; diff --git a/sys/sparc64/sparc64/machdep.c b/sys/sparc64/sparc64/machdep.c index 2e6d05e..7d1aa02 100644 --- a/sys/sparc64/sparc64/machdep.c +++ b/sys/sparc64/sparc64/machdep.c @@ -448,7 +448,7 @@ sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3, ofw_vec_t *vec) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger"); + kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); #endif } diff --git a/sys/sparc64/sparc64/trap.c b/sys/sparc64/sparc64/trap.c index 8d0ea35..e9e3c40 100644 --- a/sys/sparc64/sparc64/trap.c +++ b/sys/sparc64/sparc64/trap.c @@ -289,7 +289,7 @@ trap(struct trapframe *tf) } if (debugger_on_signal && (sig == 4 || sig == 10 || sig == 11)) - kdb_enter("trapsig"); + kdb_enter(KDB_WHY_TRAPSIG, "trapsig"); ksiginfo_init_trap(&ksi); ksi.ksi_signo = sig; ksi.ksi_code = (int)tf->tf_type; /* XXX not POSIX */ diff --git a/sys/sun4v/sun4v/hvcons.c b/sys/sun4v/sun4v/hvcons.c index 201b22c..3329d05 100644 --- a/sys/sun4v/sun4v/hvcons.c +++ b/sys/sun4v/sun4v/hvcons.c @@ -224,10 +224,10 @@ hvcn_cngetc(struct consdev *cp) while ((l = hv_cons_getchar(&ch)) != H_EOK) { #if defined(KDB) if (l == H_BREAK || l == H_HUP) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, "Break sequence on console"); if (kdb_alt_break(ch, &alt_break_state)) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, "Break sequence on console"); #endif if (l != -2 && l != 0) { return (-1); @@ -248,9 +248,9 @@ hvcn_cncheckc(struct consdev *cp) if ((l = hv_cons_getchar(&ch)) == H_EOK) { #if defined(KDB) if (l == H_BREAK || l == H_HUP) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, "Break sequence on console"); if (kdb_alt_break(ch, &alt_break_state)) - kdb_enter("Break sequence on console"); + kdb_enter(KDB_WHY_BREAK, "Break sequence on console"); #endif return (ch); } diff --git a/sys/sun4v/sun4v/machdep.c b/sys/sun4v/sun4v/machdep.c index 16a508a..1d0bf66 100644 --- a/sys/sun4v/sun4v/machdep.c +++ b/sys/sun4v/sun4v/machdep.c @@ -510,7 +510,7 @@ sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3, ofw_vec_t *vec) #ifdef KDB if (boothowto & RB_KDB) - kdb_enter("Boot flags requested debugger"); + kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); #endif BVPRINTF("sparc64_init done\n"); } diff --git a/sys/sun4v/sun4v/trap.c b/sys/sun4v/sun4v/trap.c index 75d5ce0..f04c424 100644 --- a/sys/sun4v/sun4v/trap.c +++ b/sys/sun4v/sun4v/trap.c @@ -366,7 +366,7 @@ trap(struct trapframe *tf, int64_t type, uint64_t data) } if (debugger_on_signal && (sig == 4 || sig == 10 || sig == 11)) - kdb_enter("trapsig"); + kdb_enter(KDB_WHY_TRAPSIG, "trapsig"); #ifdef VERBOSE if (sig == 4 || sig == 10 || sig == 11) printf("trap: %ld:%s: 0x%lx at 0x%lx on cpu=%d sig=%d proc=%s\n", diff --git a/sys/sys/kdb.h b/sys/sys/kdb.h index ece16fc..0f989f5 100644 --- a/sys/sys/kdb.h +++ b/sys/sys/kdb.h @@ -66,7 +66,7 @@ extern struct thread *kdb_thread; /* Current thread. */ int kdb_alt_break(int, int *); void kdb_backtrace(void); int kdb_dbbe_select(const char *); -void kdb_enter(const char *); +void kdb_enter(const char *, const char *); void kdb_init(void); void * kdb_jmpbuf(jmp_buf); void kdb_reenter(void); @@ -78,4 +78,31 @@ struct thread *kdb_thr_next(struct thread *); int kdb_thr_select(struct thread *); int kdb_trap(int, int, struct trapframe *); +/* + * KDB enters the debugger via breakpoint(), which leaves the debugger without + * a lot of information about why it was entered. This simple enumerated set + * captures some basic information. + * + * It is recommended that values here be short (<16 character) alpha-numeric + * strings, as they will be used to construct DDB(4) script names. + */ +extern const char * volatile kdb_why; +#define KDB_WHY_UNSET NULL /* No reason set. */ +#define KDB_WHY_PANIC "panic" /* panic() was called. */ +#define KDB_WHY_SYSCTL "sysctl" /* Sysctl entered debugger. */ +#define KDB_WHY_BOOTFLAGS "bootflags" /* Boot flags were set. */ +#define KDB_WHY_WITNESS "witness" /* Witness entered debugger. */ +#define KDB_WHY_VFSLOCK "vfslock" /* VFS detected lock problem. */ +#define KDB_WHY_NETGRAPH "netgraph" /* Netgraph entered debugger. */ +#define KDB_WHY_BREAK "break" /* Console or serial break. */ +#define KDB_WHY_WATCHDOG "watchdog" /* Watchdog entered debugger. */ +#define KDB_WHY_CAM "cam" /* CAM has entered debugger. */ +#define KDB_WHY_NDIS "ndis" /* NDIS entered debugger. */ +#define KDB_WHY_ACPI "acpi" /* ACPI entered debugger. */ +#define KDB_WHY_TRAPSIG "trapsig" /* Sun4v/Sparc fault. */ +#define KDB_WHY_POWERFAIL "powerfail" /* Powerfail NMI. */ +#define KDB_WHY_MAC "mac" /* MAC Framework. */ +#define KDB_WHY_POWERPC "powerpc" /* Unhandled powerpc intr. */ +#define KDB_WHY_UNIONFS "unionfs" /* Unionfs bug. */ + #endif /* !_SYS_KDB_H_ */ |
