/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
+
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
#include <mach_kdb.h>
#include <mach/boolean.h>
-#include <mach/exception_types.h>
#include <mach/mach_types.h>
+#include <mach/exception_types.h>
#include <kern/cpu_data.h>
#include <kern/debug.h>
+#include <kern/clock.h>
+#include <kdp/kdp_core.h>
#include <kdp/kdp_internal.h>
#include <kdp/kdp_en_debugger.h>
+#include <kdp/kdp_callout.h>
#include <kdp/kdp_udp.h>
+#if CONFIG_SERIAL_KDP
+#include <kdp/kdp_serial.h>
+#endif
+
+#include <vm/vm_map.h>
+#include <vm/vm_protos.h>
+#include <vm/vm_kern.h> /* kernel_map */
+
+#include <mach/memory_object_types.h>
+
+#include <string.h>
#define DO_ALIGN 1 /* align all packet data accesses */
extern int kdp_getc(void);
extern int reattach_wait;
+extern int serial_getc(void);
+extern void serial_putc(char);
+extern int serial_init(void);
+
static u_short ip_id; /* ip packet ctr, for ids */
/* @(#)udp_usrreq.c 2.2 88/05/23 4.0NFSSRC SMI; from UCB 7.1 6/5/86 */
* Per RFC 768, August, 1980.
*/
#define UDP_TTL 60 /* deflt time to live for UDP packets */
-int udp_ttl=UDP_TTL;
+int udp_ttl = UDP_TTL;
static unsigned char exception_seq;
static struct {
boolean_t input;
} pkt, saved_reply;
+/*
+ * Support relatively small request/responses here.
+ * If kgmacros needs to make a larger request, increase
+ * this buffer size
+ */
+static struct {
+ unsigned char data[128];
+ unsigned int len;
+ boolean_t input;
+} manual_pkt;
+
struct {
struct {
struct in_addr in;
} rmt;
} adr;
-static char
+static const char
*exception_message[] = {
"Unknown",
"Memory access", /* EXC_BAD_ACCESS */
"Breakpoint" /* EXC_BREAKPOINT */
};
-int kdp_flag = 0;
+volatile int kdp_flag = 0;
-static kdp_send_t kdp_en_send_pkt = 0;
-static kdp_receive_t kdp_en_recv_pkt = 0;
+static kdp_send_t kdp_en_send_pkt;
+static kdp_receive_t kdp_en_recv_pkt;
-static unsigned int kdp_current_ip_address = 0;
+static uint32_t kdp_current_ip_address = 0;
static struct ether_addr kdp_current_mac_address = {{0, 0, 0, 0, 0, 0}};
-static char kdp_arp_init = 0;
+static void *kdp_current_ifp;
+
+static void kdp_handler( void *);
+
+static uint32_t panic_server_ip = 0;
+static uint32_t parsed_router_ip = 0;
+static uint32_t router_ip = 0;
+static uint32_t target_ip = 0;
+
+static volatile boolean_t panicd_specified = FALSE;
+static boolean_t router_specified = FALSE;
+static unsigned int panicd_port = CORE_REMOTE_PORT;
+
+static struct ether_addr etherbroadcastaddr = {{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}};
+
+static struct ether_addr router_mac = {{0, 0, 0 , 0, 0, 0}};
+static struct ether_addr destination_mac = {{0, 0, 0 , 0, 0, 0}};
+static struct ether_addr temp_mac = {{0, 0, 0 , 0, 0, 0}};
+static struct ether_addr current_resolved_MAC = {{0, 0, 0 , 0, 0, 0}};
+
+static boolean_t flag_panic_dump_in_progress = FALSE;
+static boolean_t flag_router_mac_initialized = FALSE;
+
+static boolean_t flag_arp_resolved = FALSE;
+
+static unsigned int panic_timeout = 100000;
+static unsigned int last_panic_port = CORE_REMOTE_PORT;
+
+unsigned int SEGSIZE = 512;
+
+static char panicd_ip_str[20];
+static char router_ip_str[20];
+
+static unsigned int panic_block = 0;
+volatile unsigned int kdp_trigger_core_dump = 0;
+__private_extern__ volatile unsigned int flag_kdp_trigger_reboot = 0;
+
+extern unsigned int not_in_kdp;
+
+extern unsigned int disableConsoleOutput;
+
+extern void kdp_call(void);
+extern boolean_t kdp_call_kdb(void);
+extern int kern_dump(void);
+
+void * kdp_get_interface(void);
+void kdp_set_gateway_mac(void *);
+void kdp_set_ip_and_mac_addresses(struct in_addr *, struct ether_addr *);
+void kdp_set_interface(void *);
+
+void kdp_disable_arp(void);
+static void kdp_arp_reply(struct ether_arp *);
+static void kdp_process_arp_reply(struct ether_arp *);
+static boolean_t kdp_arp_resolve(uint32_t, struct ether_addr *);
+
+static volatile unsigned kdp_reentry_deadline;
+#if defined(__LP64__)
+uint32_t kdp_crashdump_feature_mask = KDP_FEATURE_LARGE_CRASHDUMPS;
+static uint32_t kdp_feature_large_crashdumps;
+#endif
+
+static boolean_t gKDPDebug = FALSE;
+#define KDP_DEBUG(...) if (gKDPDebug) printf(__VA_ARGS__);
+
+int kdp_snapshot = 0;
+static int stack_snapshot_ret = 0;
+static unsigned stack_snapshot_bytes_traced = 0;
+
+static void *stack_snapshot_buf;
+static uint32_t stack_snapshot_bufsize;
+static int stack_snapshot_pid;
+static uint32_t stack_snapshot_options;
+
+static unsigned int old_debugger;
+
+void
+kdp_snapshot_preflight(int pid, void * tracebuf, uint32_t tracebuf_size,
+ uint32_t options);
+
+void
+kdp_snapshot_postflight(void);
+
+extern int
+kdp_stackshot(int pid, void *tracebuf, uint32_t tracebuf_size,
+ unsigned trace_options, uint32_t *pbytesTraced);
+
+int
+kdp_stack_snapshot_geterror(void);
+
+int
+kdp_stack_snapshot_bytes_traced(void);
+
+static thread_call_t
+kdp_timer_call;
+
+static void
+kdp_ml_enter_debugger_wrapper(__unused void *param0, __unused void *param1) {
+ kdp_ml_enter_debugger();
+}
+
+static void
+kdp_timer_callout_init(void) {
+ kdp_timer_call = thread_call_allocate(kdp_ml_enter_debugger_wrapper, NULL);
+}
-static void kdp_handler( void *);
void
kdp_register_send_receive(
- kdp_send_t send,
+ kdp_send_t send,
kdp_receive_t receive)
{
- unsigned int debug;
+ unsigned int debug = 0;
+
+ debug_log_init();
+
+ kdp_timer_callout_init();
+
+ PE_parse_boot_argn("debug", &debug, sizeof (debug));
+#if defined(__LP64__)
+ kdp_crashdump_feature_mask = htonl(kdp_crashdump_feature_mask);
+#endif
+
+ if (!debug)
+ return;
kdp_en_send_pkt = send;
kdp_en_recv_pkt = receive;
- debug_log_init();
- PE_parse_boot_arg("debug", &debug);
+
if (debug & DB_KDP_BP_DIS)
kdp_flag |= KDP_BP_DIS;
+ if (debug & DB_KDP_GETC_ENA)
+ kdp_flag |= KDP_GETC_ENA;
+ if (debug & DB_ARP)
+ kdp_flag |= KDP_ARP;
+
+ if (debug & DB_KERN_DUMP_ON_PANIC)
+ kdp_flag |= KDP_PANIC_DUMP_ENABLED;
+ if (debug & DB_KERN_DUMP_ON_NMI)
+ kdp_flag |= PANIC_CORE_ON_NMI;
+
+ if (debug & DB_DBG_POST_CORE)
+ kdp_flag |= DBG_POST_CORE;
+
+ if (debug & DB_PANICLOG_DUMP)
+ kdp_flag |= PANIC_LOG_DUMP;
+
+ if (PE_parse_boot_argn("_panicd_ip", panicd_ip_str, sizeof (panicd_ip_str)))
+ panicd_specified = TRUE;
+
+ if ((debug & DB_REBOOT_POST_CORE) && (panicd_specified == TRUE))
+ kdp_flag |= REBOOT_POST_CORE;
+
+ if (PE_parse_boot_argn("_router_ip", router_ip_str, sizeof (router_ip_str)))
+ router_specified = TRUE;
+
+ if (!PE_parse_boot_argn("panicd_port", &panicd_port, sizeof (panicd_port)))
+ panicd_port = CORE_REMOTE_PORT;
kdp_flag |= KDP_READY;
if (current_debugger == NO_CUR_DB)
current_debugger = KDP_CUR_DB;
- if (halt_in_debugger) {
+ if ((kdp_current_ip_address != 0) && halt_in_debugger) {
kdp_call();
halt_in_debugger=0;
}
void
kdp_unregister_send_receive(
- kdp_send_t send,
- kdp_receive_t receive)
+ __unused kdp_send_t send,
+ __unused kdp_receive_t receive)
{
if (current_debugger == KDP_CUR_DB)
current_debugger = NO_CUR_DB;
kdp_en_recv_pkt = NULL;
}
+/* Cache stack snapshot parameters in preparation for a trace */
+void
+kdp_snapshot_preflight(int pid, void * tracebuf, uint32_t tracebuf_size, uint32_t options)
+{
+ stack_snapshot_pid = pid;
+ stack_snapshot_buf = tracebuf;
+ stack_snapshot_bufsize = tracebuf_size;
+ stack_snapshot_options = options;
+ kdp_snapshot++;
+ /* Mark this debugger as active, since the polled mode driver that
+ * ordinarily does this may not be enabled (yet), or since KDB may be
+ * the primary debugger.
+ */
+ old_debugger = current_debugger;
+ if (old_debugger != KDP_CUR_DB) {
+ current_debugger = KDP_CUR_DB;
+ }
+}
+
+void
+kdp_snapshot_postflight(void)
+{
+ kdp_snapshot--;
+ if ((kdp_en_send_pkt == NULL) || (old_debugger == KDB_CUR_DB))
+ current_debugger = old_debugger;
+}
+
+int
+kdp_stack_snapshot_geterror(void)
+{
+ return stack_snapshot_ret;
+}
+
+int
+kdp_stack_snapshot_bytes_traced(void)
+{
+ return stack_snapshot_bytes_traced;
+}
+
+static void
+kdp_schedule_debugger_reentry(unsigned interval) {
+ uint64_t deadline;;
+
+ clock_interval_to_deadline(interval, 1000 * 1000, &deadline);
+ thread_call_enter_delayed(kdp_timer_call, deadline);
+}
+
static void
enaddr_copy(
void *src,
ip_sum(
unsigned char *c,
unsigned int hlen
-)
+ )
{
- unsigned int high, low, sum;
+ unsigned int high, low, sum;
- high = low = 0;
- while (hlen-- > 0) {
- low += c[1] + c[3];
- high += c[0] + c[2];
+ high = low = 0;
+ while (hlen-- > 0) {
+ low += c[1] + c[3];
+ high += c[0] + c[2];
- c += sizeof (int);
- }
+ c += sizeof (int);
+ }
- sum = (high << 8) + low;
- sum = (sum >> 16) + (sum & 65535);
+ sum = (high << 8) + low;
+ sum = (sum >> 16) + (sum & 65535);
- return (sum > 65535 ? sum - 65535 : sum);
+ return (sum > 65535 ? sum - 65535 : sum);
}
static void
kdp_reply(
unsigned short reply_port
-)
+ )
{
- struct udpiphdr aligned_ui, *ui = &aligned_ui;
- struct ip aligned_ip, *ip = &aligned_ip;
- struct in_addr tmp_ipaddr;
- struct ether_addr tmp_enaddr;
- struct ether_header *eh;
+ struct udpiphdr aligned_ui, *ui = &aligned_ui;
+ struct ip aligned_ip, *ip = &aligned_ip;
+ struct in_addr tmp_ipaddr;
+ struct ether_addr tmp_enaddr;
+ struct ether_header *eh = NULL;
- if (!pkt.input)
- kdp_panic("kdp_reply");
+ if (!pkt.input)
+ kdp_panic("kdp_reply");
- pkt.off -= sizeof (struct udpiphdr);
+ pkt.off -= (unsigned int)sizeof (struct udpiphdr);
#if DO_ALIGN
- bcopy((char *)&pkt.data[pkt.off], (char *)ui, sizeof(*ui));
+ bcopy((char *)&pkt.data[pkt.off], (char *)ui, sizeof(*ui));
#else
- ui = (struct udpiphdr *)&pkt.data[pkt.off];
+ ui = (struct udpiphdr *)&pkt.data[pkt.off];
#endif
- ui->ui_next = ui->ui_prev = 0;
- ui->ui_x1 = 0;
- ui->ui_pr = IPPROTO_UDP;
- ui->ui_len = htons((u_short)pkt.len + sizeof (struct udphdr));
- tmp_ipaddr = ui->ui_src;
- ui->ui_src = ui->ui_dst;
- ui->ui_dst = tmp_ipaddr;
- ui->ui_sport = htons(KDP_REMOTE_PORT);
- ui->ui_dport = reply_port;
- ui->ui_ulen = ui->ui_len;
- ui->ui_sum = 0;
+ ui->ui_next = ui->ui_prev = 0;
+ ui->ui_x1 = 0;
+ ui->ui_pr = IPPROTO_UDP;
+ ui->ui_len = htons((u_short)pkt.len + sizeof (struct udphdr));
+ tmp_ipaddr = ui->ui_src;
+ ui->ui_src = ui->ui_dst;
+ ui->ui_dst = tmp_ipaddr;
+ ui->ui_sport = htons(KDP_REMOTE_PORT);
+ ui->ui_dport = reply_port;
+ ui->ui_ulen = ui->ui_len;
+ ui->ui_sum = 0;
#if DO_ALIGN
- bcopy((char *)ui, (char *)&pkt.data[pkt.off], sizeof(*ui));
-
- bcopy((char *)&pkt.data[pkt.off], (char *)ip, sizeof(*ip));
+ bcopy((char *)ui, (char *)&pkt.data[pkt.off], sizeof(*ui));
+ bcopy((char *)&pkt.data[pkt.off], (char *)ip, sizeof(*ip));
#else
- ip = (struct ip *)&pkt.data[pkt.off];
+ ip = (struct ip *)&pkt.data[pkt.off];
#endif
- ip->ip_len = htons(sizeof (struct udpiphdr) + pkt.len);
- ip->ip_v = IPVERSION;
- ip->ip_id = htons(ip_id++);
- ip->ip_hl = sizeof (struct ip) >> 2;
- ip->ip_ttl = udp_ttl;
- ip->ip_sum = 0;
- ip->ip_sum = htons(~ip_sum((unsigned char *)ip, ip->ip_hl));
+ ip->ip_len = htons(sizeof (struct udpiphdr) + pkt.len);
+ ip->ip_v = IPVERSION;
+ ip->ip_id = htons(ip_id++);
+ ip->ip_hl = sizeof (struct ip) >> 2;
+ ip->ip_ttl = udp_ttl;
+ ip->ip_sum = 0;
+ ip->ip_sum = htons(~ip_sum((unsigned char *)ip, ip->ip_hl));
#if DO_ALIGN
- bcopy((char *)ip, (char *)&pkt.data[pkt.off], sizeof(*ip));
+ bcopy((char *)ip, (char *)&pkt.data[pkt.off], sizeof(*ip));
#endif
- pkt.len += sizeof (struct udpiphdr);
+ pkt.len += (unsigned int)sizeof (struct udpiphdr);
- pkt.off -= sizeof (struct ether_header);
+ pkt.off -= (unsigned int)sizeof (struct ether_header);
- eh = (struct ether_header *)&pkt.data[pkt.off];
- enaddr_copy(eh->ether_shost, &tmp_enaddr);
- enaddr_copy(eh->ether_dhost, eh->ether_shost);
- enaddr_copy(&tmp_enaddr, eh->ether_dhost);
- eh->ether_type = htons(ETHERTYPE_IP);
+ eh = (struct ether_header *)&pkt.data[pkt.off];
+ enaddr_copy(eh->ether_shost, &tmp_enaddr);
+ enaddr_copy(eh->ether_dhost, eh->ether_shost);
+ enaddr_copy(&tmp_enaddr, eh->ether_dhost);
+ eh->ether_type = htons(ETHERTYPE_IP);
- pkt.len += sizeof (struct ether_header);
+ pkt.len += (unsigned int)sizeof (struct ether_header);
- // save reply for possible retransmission
- bcopy((char *)&pkt, (char *)&saved_reply, sizeof(pkt));
+ // save reply for possible retransmission
+ bcopy((char *)&pkt, (char *)&saved_reply, sizeof(pkt));
- (*kdp_en_send_pkt)(&pkt.data[pkt.off], pkt.len);
+ (*kdp_en_send_pkt)(&pkt.data[pkt.off], pkt.len);
- // increment expected sequence number
- exception_seq++;
+ // increment expected sequence number
+ exception_seq++;
}
static void
if (pkt.input)
kdp_panic("kdp_send");
- pkt.off -= sizeof (struct udpiphdr);
+ pkt.off -= (unsigned int)sizeof (struct udpiphdr);
#if DO_ALIGN
bcopy((char *)&pkt.data[pkt.off], (char *)ui, sizeof(*ui));
bcopy((char *)ip, (char *)&pkt.data[pkt.off], sizeof(*ip));
#endif
- pkt.len += sizeof (struct udpiphdr);
+ pkt.len += (unsigned int)sizeof (struct udpiphdr);
- pkt.off -= sizeof (struct ether_header);
+ pkt.off -= (unsigned int)sizeof (struct ether_header);
eh = (struct ether_header *)&pkt.data[pkt.off];
enaddr_copy(&adr.loc.ea, eh->ether_shost);
enaddr_copy(&adr.rmt.ea, eh->ether_dhost);
eh->ether_type = htons(ETHERTYPE_IP);
- pkt.len += sizeof (struct ether_header);
+ pkt.len += (unsigned int)sizeof (struct ether_header);
(*kdp_en_send_pkt)(&pkt.data[pkt.off], pkt.len);
}
+/* We don't interpret this pointer, we just give it to the
+bsd stack so it can decide when to set the MAC and IP info. */
+void
+kdp_set_interface(void *ifp)
+{
+ kdp_current_ifp = ifp;
+}
+
+void *
+kdp_get_interface(void)
+{
+ return kdp_current_ifp;
+}
void
kdp_set_ip_and_mac_addresses(
struct in_addr *ipaddr,
struct ether_addr *macaddr)
{
- unsigned int debug = 0;
-
kdp_current_ip_address = ipaddr->s_addr;
kdp_current_mac_address = *macaddr;
-
- /* Get the debug boot-arg to decide if ARP replies are allowed */
- if (kdp_arp_init == 0) {
- PE_parse_boot_arg("debug", &debug);
- if (debug & DB_ARP)
- kdp_flag |= KDP_ARP;
- kdp_arp_init = 1;
+ if ((current_debugger == KDP_CUR_DB) && halt_in_debugger) {
+ kdp_call();
+ halt_in_debugger=0;
}
}
+void
+kdp_set_gateway_mac(void *gatewaymac)
+{
+ router_mac = *(struct ether_addr *)gatewaymac;
+ flag_router_mac_initialized = TRUE;
+}
+
struct ether_addr
kdp_get_mac_addr(void)
{
unsigned int
kdp_get_ip_address(void)
{
- return kdp_current_ip_address;
+ return (unsigned int)kdp_current_ip_address;
+}
+
+void
+kdp_disable_arp(void)
+{
+ kdp_flag &= ~(DB_ARP);
+}
+
+static void
+kdp_arp_dispatch(void)
+{
+ struct ether_arp aligned_ea, *ea = &aligned_ea;
+ unsigned arp_header_offset;
+
+ arp_header_offset = (unsigned)sizeof(struct ether_header) + pkt.off;
+ memcpy((void *)ea, (void *)&pkt.data[arp_header_offset], sizeof(*ea));
+
+ switch(ntohs(ea->arp_op)) {
+ case ARPOP_REQUEST:
+ kdp_arp_reply(ea);
+ break;
+ case ARPOP_REPLY:
+ kdp_process_arp_reply(ea);
+ break;
+ default:
+ return;
+ }
+}
+
+static void
+kdp_process_arp_reply(struct ether_arp *ea)
+{
+ /* Are we interested in ARP replies? */
+ if (flag_arp_resolved == TRUE)
+ return;
+
+ /* Did we receive a reply from the right source? */
+ if (((struct in_addr *)(ea->arp_spa))->s_addr != target_ip)
+ return;
+
+ flag_arp_resolved = TRUE;
+ current_resolved_MAC = *(struct ether_addr *) (ea->arp_sha);
+
+ return;
}
/* ARP responses are enabled when the DB_ARP bit of the debug boot arg
- is set. A workaround if you don't want to reboot is to set
- kdpDEBUGFlag &= DB_ARP when connected (but that certainly isn't a published
- interface!)
-*/
+ * is set.
+ */
static void
-kdp_arp_reply(void)
+kdp_arp_reply(struct ether_arp *ea)
{
struct ether_header *eh;
- struct ether_arp aligned_ea, *ea = &aligned_ea;
struct in_addr isaddr, itaddr, myaddr;
- struct ether_addr my_enaddr;
+ struct ether_addr my_enaddr;
eh = (struct ether_header *)&pkt.data[pkt.off];
- pkt.off += sizeof(struct ether_header);
+ pkt.off += (unsigned int)sizeof(struct ether_header);
- memcpy((void *)ea, (void *)&pkt.data[pkt.off],sizeof(*ea));
-
- if(ntohs(ea->arp_op) != ARPOP_REQUEST)
- return;
+ if(ntohs(ea->arp_op) != ARPOP_REQUEST)
+ return;
myaddr.s_addr = kdp_get_ip_address();
my_enaddr = kdp_get_mac_addr();
- if (!(myaddr.s_addr) || !(my_enaddr.ether_addr_octet[1]))
+ if ((ntohl(myaddr.s_addr) == 0) ||
+ ((my_enaddr.ether_addr_octet[0] & 0xff) == 0
+ && (my_enaddr.ether_addr_octet[1] & 0xff) == 0
+ && (my_enaddr.ether_addr_octet[2] & 0xff) == 0
+ && (my_enaddr.ether_addr_octet[3] & 0xff) == 0
+ && (my_enaddr.ether_addr_octet[4] & 0xff) == 0
+ && (my_enaddr.ether_addr_octet[5] & 0xff) == 0
+ ))
return;
(void)memcpy((void *)&isaddr, (void *)ea->arp_spa, sizeof (isaddr));
(void)memcpy((void *)&itaddr, (void *)ea->arp_tpa, sizeof (itaddr));
-
+
if (itaddr.s_addr == myaddr.s_addr) {
(void)memcpy((void *)ea->arp_tha, (void *)ea->arp_sha, sizeof(ea->arp_sha));
(void)memcpy((void *)ea->arp_sha, (void *)&my_enaddr, sizeof(ea->arp_sha));
(void)memcpy(eh->ether_shost, &my_enaddr, sizeof(eh->ether_shost));
eh->ether_type = htons(ETHERTYPE_ARP);
(void)memcpy(&pkt.data[pkt.off], ea, sizeof(*ea));
- pkt.off -= sizeof (struct ether_header);
+ pkt.off -= (unsigned int)sizeof (struct ether_header);
/* pkt.len is still the length we want, ether_header+ether_arp */
(*kdp_en_send_pkt)(&pkt.data[pkt.off], pkt.len);
}
static void
kdp_poll(void)
{
- struct ether_header *eh;
- struct udpiphdr aligned_ui, *ui = &aligned_ui;
- struct ip aligned_ip, *ip = &aligned_ip;
- static int msg_printed;
+ struct ether_header *eh = NULL;
+ struct udpiphdr aligned_ui, *ui = &aligned_ui;
+ struct ip aligned_ip, *ip = &aligned_ip;
+ static int msg_printed;
-
- if (pkt.input)
- kdp_panic("kdp_poll");
+ if (pkt.input)
+ kdp_panic("kdp_poll");
- if (!kdp_en_recv_pkt || !kdp_en_send_pkt) {
- if( msg_printed == 0) {
- msg_printed = 1;
- printf("kdp_poll: no debugger device\n");
+ if (!kdp_en_recv_pkt || !kdp_en_send_pkt) {
+ if( msg_printed == 0) {
+ msg_printed = 1;
+ printf("kdp_poll: no debugger device\n");
+ }
+ return;
}
- return;
- }
- pkt.off = pkt.len = 0;
- (*kdp_en_recv_pkt)(pkt.data, &pkt.len, 3/* ms */);
-
- if (pkt.len == 0)
- return;
+ pkt.off = pkt.len = 0;
+ (*kdp_en_recv_pkt)(pkt.data, &pkt.len, 3/* ms */);
- if (pkt.len >= sizeof(struct ether_header))
- {
- eh = (struct ether_header *)&pkt.data[pkt.off];
-
- if (kdp_flag & KDP_ARP)
- {
- if (ntohs(eh->ether_type) == ETHERTYPE_ARP)
- {
- kdp_arp_reply();
+ if (pkt.len == 0)
return;
- }
- }
- }
- if (pkt.len < (sizeof (struct ether_header) + sizeof (struct udpiphdr)))
- return;
+ if (pkt.len >= sizeof(struct ether_header))
+ {
+ eh = (struct ether_header *)&pkt.data[pkt.off];
+
+ if (kdp_flag & KDP_ARP)
+ {
+ if (ntohs(eh->ether_type) == ETHERTYPE_ARP)
+ {
+ kdp_arp_dispatch();
+ return;
+ }
+ }
+ }
+
+ if (pkt.len < (sizeof (struct ether_header) + sizeof (struct udpiphdr)))
+ return;
- pkt.off += sizeof (struct ether_header);
- if (ntohs(eh->ether_type) != ETHERTYPE_IP) {
- return;
- }
+ pkt.off += (unsigned int)sizeof (struct ether_header);
+ if (ntohs(eh->ether_type) != ETHERTYPE_IP) {
+ return;
+ }
#if DO_ALIGN
- bcopy((char *)&pkt.data[pkt.off], (char *)ui, sizeof(*ui));
- bcopy((char *)&pkt.data[pkt.off], (char *)ip, sizeof(*ip));
+ bcopy((char *)&pkt.data[pkt.off], (char *)ui, sizeof(*ui));
+ bcopy((char *)&pkt.data[pkt.off], (char *)ip, sizeof(*ip));
#else
- ui = (struct udpiphdr *)&pkt.data[pkt.off];
- ip = (struct ip *)&pkt.data[pkt.off];
+ ui = (struct udpiphdr *)&pkt.data[pkt.off];
+ ip = (struct ip *)&pkt.data[pkt.off];
#endif
- pkt.off += sizeof (struct udpiphdr);
- if (ui->ui_pr != IPPROTO_UDP) {
- return;
- }
+ pkt.off += (unsigned int)sizeof (struct udpiphdr);
+ if (ui->ui_pr != IPPROTO_UDP) {
+ return;
+ }
- if (ip->ip_hl > (sizeof (struct ip) >> 2)) {
- return;
- }
+ if (ip->ip_hl > (sizeof (struct ip) >> 2)) {
+ return;
+ }
- if (ntohs(ui->ui_dport) != KDP_REMOTE_PORT) {
- return;
- }
-
- if (!kdp.is_conn) {
- enaddr_copy(eh->ether_dhost, &adr.loc.ea);
- adr.loc.in = ui->ui_dst;
+ if (ntohs(ui->ui_dport) != KDP_REMOTE_PORT) {
+ if (panicd_port == (ntohs(ui->ui_dport)) &&
+ flag_panic_dump_in_progress) {
+ last_panic_port = ui->ui_sport;
+ }
+ else
+ return;
+ }
+ /* If we receive a kernel debugging packet whilst a
+ * core dump is in progress, abort the transfer and
+ * enter the debugger.
+ */
+ else
+ if (flag_panic_dump_in_progress)
+ {
+ abort_panic_transfer();
+ return;
+ }
+
+ if (!kdp.is_conn && !flag_panic_dump_in_progress) {
+ enaddr_copy(eh->ether_dhost, &adr.loc.ea);
+ adr.loc.in = ui->ui_dst;
+
+ enaddr_copy(eh->ether_shost, &adr.rmt.ea);
+ adr.rmt.in = ui->ui_src;
+ }
- enaddr_copy(eh->ether_shost, &adr.rmt.ea);
- adr.rmt.in = ui->ui_src;
- }
+ /*
+ * Calculate kdp packet length.
+ */
+ pkt.len = ntohs((u_short)ui->ui_ulen) - (unsigned int)sizeof (struct udphdr);
+ pkt.input = TRUE;
+}
- /*
- * Calculate kdp packet length.
- */
- pkt.len = ntohs((u_short)ui->ui_ulen) - sizeof (struct udphdr);
- pkt.input = TRUE;
+/* Create and transmit an ARP resolution request for the target IP address.
+ * This is modeled on ether_inet_arp()/RFC 826.
+ */
+static void
+transmit_ARP_request(uint32_t ip_addr)
+{
+ struct ether_header *eh = (struct ether_header *) &pkt.data[0];
+ struct ether_arp *ea = (struct ether_arp *) &pkt.data[sizeof(struct ether_header)];
+
+ KDP_DEBUG("Transmitting ARP request\n");
+ /* Populate the ether_header */
+ eh->ether_type = htons(ETHERTYPE_ARP);
+ enaddr_copy(&kdp_current_mac_address, eh->ether_shost);
+ enaddr_copy(ðerbroadcastaddr, eh->ether_dhost);
+
+ /* Populate the ARP header */
+ ea->arp_pro = htons(ETHERTYPE_IP);
+ ea->arp_hln = sizeof(ea->arp_sha);
+ ea->arp_pln = sizeof(ea->arp_spa);
+ ea->arp_hrd = htons(ARPHRD_ETHER);
+ ea->arp_op = htons(ARPOP_REQUEST);
+
+ /* Target fields */
+ enaddr_copy(ðerbroadcastaddr, ea->arp_tha);
+ memcpy(ea->arp_tpa, (void *) &ip_addr, sizeof(ip_addr));
+
+ /* Source fields */
+ enaddr_copy(&kdp_current_mac_address, ea->arp_sha);
+ memcpy(ea->arp_spa, (void *) &kdp_current_ip_address, sizeof(kdp_current_ip_address));
+
+ pkt.off = 0;
+ pkt.len = sizeof(struct ether_header) + sizeof(struct ether_arp);
+ /* Transmit */
+ (*kdp_en_send_pkt)(&pkt.data[pkt.off], pkt.len);
+}
+
+static boolean_t
+kdp_arp_resolve(uint32_t arp_target_ip, struct ether_addr *resolved_MAC)
+{
+ int poll_count = 256; /* ~770 ms modulo broadcast/delayed traffic? */
+ char tretries = 0;
+
+#define NUM_ARP_TX_RETRIES 5
+
+ target_ip = arp_target_ip;
+ flag_arp_resolved = FALSE;
+
+TRANSMIT_RETRY:
+ pkt.off = pkt.len = 0;
+
+ tretries++;
+
+ if (tretries >= NUM_ARP_TX_RETRIES) {
+ return FALSE;
+ }
+
+ KDP_DEBUG("ARP TX attempt #%d \n", tretries);
+
+ transmit_ARP_request(arp_target_ip);
+
+ while (!pkt.input && !flag_arp_resolved && flag_panic_dump_in_progress && --poll_count) {
+ kdp_poll();
+ }
+
+ if (flag_arp_resolved) {
+ *resolved_MAC = current_resolved_MAC;
+ return TRUE;
+ }
+
+ if (!flag_panic_dump_in_progress || pkt.input) /* we received a debugging packet, bail*/
+ {
+ printf("Received a debugger packet,transferring control to debugger\n");
+ /* Indicate that we should wait in the debugger when we return */
+ kdp_flag |= DBG_POST_CORE;
+ pkt.input = FALSE;
+ return FALSE;
+ }
+ else /* We timed out */
+ if (0 == poll_count) {
+ poll_count = 256;
+ goto TRANSMIT_RETRY;
+ }
+ return FALSE;
}
static void
unsigned short reply_port;
kdp_hdr_t aligned_hdr, *hdr = &aligned_hdr;
-
kdp.saved_state = saved_state; // see comment in kdp_raise_exception
do {
goto again;
}
+ /* This is a manual side-channel to the main KDP protocol.
+ * A client like GDB/kgmacros can manually construct
+ * a request, set the input flag, issue a dummy KDP request,
+ * and then manually collect the result
+ */
+ if (manual_pkt.input) {
+ kdp_hdr_t *manual_hdr = (kdp_hdr_t *)&manual_pkt.data;
+ unsigned short manual_port_unused = 0;
+ if (!manual_hdr->is_reply) {
+ /* process */
+ kdp_packet((unsigned char *)&manual_pkt.data,
+ (int *)&manual_pkt.len,
+ &manual_port_unused);
+ }
+ manual_pkt.input = 0;
+ }
+
if (kdp_packet((unsigned char*)&pkt.data[pkt.off],
(int *)&pkt.len,
(unsigned short *)&reply_port)) {
static void
kdp_connection_wait(void)
{
- unsigned short reply_port;
- boolean_t kdp_call_kdb();
- struct ether_addr kdp_mac_addr = kdp_get_mac_addr();
- unsigned int ip_addr = kdp_get_ip_address();
+ unsigned short reply_port;
+ struct ether_addr kdp_mac_addr = kdp_get_mac_addr();
+ unsigned int ip_addr = ntohl(kdp_get_ip_address());
+
+ /*
+ * Do both a printf() and a kprintf() of the MAC and IP so that
+ * they will print out on headless machines but not be added to
+ * the panic.log
+ */
printf( "ethernet MAC address: %02x:%02x:%02x:%02x:%02x:%02x\n",
kdp_mac_addr.ether_addr_octet[0] & 0xff,
kdp_mac_addr.ether_addr_octet[4] & 0xff,
kdp_mac_addr.ether_addr_octet[5] & 0xff);
+ kprintf( "ethernet MAC address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ kdp_mac_addr.ether_addr_octet[0] & 0xff,
+ kdp_mac_addr.ether_addr_octet[1] & 0xff,
+ kdp_mac_addr.ether_addr_octet[2] & 0xff,
+ kdp_mac_addr.ether_addr_octet[3] & 0xff,
+ kdp_mac_addr.ether_addr_octet[4] & 0xff,
+ kdp_mac_addr.ether_addr_octet[5] & 0xff);
+
printf( "ip address: %d.%d.%d.%d\n",
(ip_addr & 0xff000000) >> 24,
(ip_addr & 0xff0000) >> 16,
(ip_addr & 0xff00) >> 8,
(ip_addr & 0xff));
- printf("\nWaiting for remote debugger connection.\n");
+ kprintf( "ip address: %d.%d.%d.%d\n",
+ (ip_addr & 0xff000000) >> 24,
+ (ip_addr & 0xff0000) >> 16,
+ (ip_addr & 0xff00) >> 8,
+ (ip_addr & 0xff));
+
+ printf("\nWaiting for remote debugger connection.\n");
- if (reattach_wait == 0)
- {
-#ifdef MACH_PE
- if( 0 != kdp_getc())
-#endif
- {
- printf("Options..... Type\n");
- printf("------------ ----\n");
- printf("continue.... 'c'\n");
- printf("reboot...... 'r'\n");
+
+ if (reattach_wait == 0) {
+ if((kdp_flag & KDP_GETC_ENA) && (0 != kdp_getc()))
+ {
+ printf("Options..... Type\n");
+ printf("------------ ----\n");
+ printf("continue.... 'c'\n");
+ printf("reboot...... 'r'\n");
#if MACH_KDB
- printf("enter kdb... 'k'\n");
+ printf("enter kdb... 'k'\n");
#endif
- }
- }
- else
- reattach_wait = 0;
+ }
+ } else
+ reattach_wait = 0;
- exception_seq = 0;
- do {
- kdp_hdr_t aligned_hdr, *hdr = &aligned_hdr;
+ exception_seq = 0;
+
+ do {
+ kdp_hdr_t aligned_hdr, *hdr = &aligned_hdr;
- while (!pkt.input) {
- int c;
- c = kdp_getc();
- switch(c) {
- case 'c':
- printf("Continuing...\n");
- return;
- case 'r':
- printf("Rebooting...\n");
- kdp_reboot();
- break;
+ while (!pkt.input) {
+ if (kdp_flag & KDP_GETC_ENA) {
+ switch(kdp_getc()) {
+ case 'c':
+ printf("Continuing...\n");
+ return;
+ case 'r':
+ printf("Rebooting...\n");
+ kdp_machine_reboot();
+ break;
#if MACH_KDB
- case 'k':
- printf("calling kdb...\n");
- if (kdp_call_kdb())
- return;
- else
- printf("not implemented...\n");
+ case 'k':
+ printf("calling kdb...\n");
+ if (kdp_call_kdb())
+ return;
+ else
+ printf("not implemented...\n");
#endif
- default:
- break;
- }
- kdp_poll();
- }
+ default:
+ break;
+ }
+ }
+ kdp_poll();
+ }
- // check for sequence number of 0
#if DO_ALIGN
- bcopy((char *)&pkt.data[pkt.off], (char *)hdr, sizeof(*hdr));
+ bcopy((char *)&pkt.data[pkt.off], (char *)hdr, sizeof(*hdr));
#else
- hdr = (kdp_hdr_t *)&pkt.data[pkt.off];
+ hdr = (kdp_hdr_t *)&pkt.data[pkt.off];
#endif
- if (hdr->request == KDP_HOSTREBOOT) {
- kdp_reboot();
- /* should not return! */
- }
- if (((hdr->request == KDP_CONNECT) || (hdr->request == KDP_REATTACH)) &&
- !hdr->is_reply && (hdr->seq == exception_seq)) {
- if (kdp_packet((unsigned char *)&pkt.data[pkt.off],
- (int *)&pkt.len,
- (unsigned short *)&reply_port))
- kdp_reply(reply_port);
- if (hdr->request == KDP_REATTACH)
- {
- reattach_wait = 0;
- hdr->request=KDP_DISCONNECT;
- exception_seq = 0;
- }
- }
-
- pkt.input = FALSE;
- } while (!kdp.is_conn);
+ if (hdr->request == KDP_HOSTREBOOT) {
+ kdp_machine_reboot();
+ /* should not return! */
+ }
+ if (((hdr->request == KDP_CONNECT) || (hdr->request == KDP_REATTACH)) &&
+ !hdr->is_reply && (hdr->seq == exception_seq)) {
+ if (kdp_packet((unsigned char *)&pkt.data[pkt.off],
+ (int *)&pkt.len,
+ (unsigned short *)&reply_port))
+ kdp_reply(reply_port);
+ if (hdr->request == KDP_REATTACH) {
+ reattach_wait = 0;
+ hdr->request=KDP_DISCONNECT;
+ exception_seq = 0;
+ }
+ }
+
+ pkt.input = FALSE;
+ } while (!kdp.is_conn);
- if (current_debugger == KDP_CUR_DB)
- active_debugger=1;
- printf("Connected to remote debugger.\n");
+ if (current_debugger == KDP_CUR_DB)
+ active_debugger=1;
+ printf("Connected to remote debugger.\n");
}
static void
{
int index;
+ /* Was a system trace requested ? */
+ if (kdp_snapshot && (!panic_active()) && (panic_caller == 0)) {
+ stack_snapshot_ret = kdp_stackshot(stack_snapshot_pid,
+ stack_snapshot_buf, stack_snapshot_bufsize,
+ stack_snapshot_options, &stack_snapshot_bytes_traced);
+ return;
+ }
+
disable_preemption();
if (saved_state == 0)
* do this. I think the client and the host can get out of sync.
*/
kdp.saved_state = saved_state;
+ kdp.kdp_cpu = cpu_number();
+ kdp.kdp_thread = current_thread();
if (pkt.input)
kdp_panic("kdp_raise_exception");
+
+
+ if (((kdp_flag & KDP_PANIC_DUMP_ENABLED) || (kdp_flag & PANIC_LOG_DUMP))
+ && (panicstr != (char *) 0)) {
+ kdp_panic_dump();
+ if (kdp_flag & REBOOT_POST_CORE)
+ kdp_machine_reboot();
+ }
+ else
+ if ((kdp_flag & PANIC_CORE_ON_NMI) && (panicstr == (char *) 0) &&
+ !kdp.is_conn) {
+
+ disable_debug_output = disableConsoleOutput = FALSE;
+ kdp_panic_dump();
+
+ if (!(kdp_flag & DBG_POST_CORE))
+ goto exit_raise_exception;
+ }
+
again:
if (!kdp.is_conn)
kdp_connection_wait();
- else
- {
+ else {
kdp_send_exception(exception, code, subcode);
- if (kdp.exception_ack_needed)
- {
+ if (kdp.exception_ack_needed) {
kdp.exception_ack_needed = FALSE;
kdp_remove_all_breakpoints();
printf("Remote debugger disconnected.\n");
printf("Remote debugger disconnected.\n");
}
}
+ /* Allow triggering a panic core dump when connected to the machine
+ * Continuing after setting kdp_trigger_core_dump should do the
+ * trick.
+ */
+
+ if (1 == kdp_trigger_core_dump) {
+ kdp_flag &= ~PANIC_LOG_DUMP;
+ kdp_flag |= KDP_PANIC_DUMP_ENABLED;
+ kdp_panic_dump();
+ kdp_trigger_core_dump = 0;
+ }
+
+/* Trigger a reboot if the user has set this flag through the
+ * debugger.Ideally, this would be done through the HOSTREBOOT packet
+ * in the protocol,but that will need gdb support,and when it's
+ * available, it should work automatically.
+ */
+ if (1 == flag_kdp_trigger_reboot) {
+ kdp_machine_reboot();
+ /* If we're still around, reset the flag */
+ flag_kdp_trigger_reboot = 0;
+ }
+
+ if (kdp_reentry_deadline) {
+ kdp_schedule_debugger_reentry(kdp_reentry_deadline);
+ printf("Debugger re-entry scheduled in %d milliseconds\n", kdp_reentry_deadline);
+ kdp_reentry_deadline = 0;
+ }
kdp_sync_cache();
if (reattach_wait == 1)
goto again;
+exit_raise_exception:
enable_preemption();
}
kdp.exception_seq = kdp.conn_seq = 0;
}
+struct corehdr *
+create_panic_header(unsigned int request, const char *corename,
+ unsigned length, unsigned int block)
+{
+ struct udpiphdr aligned_ui, *ui = &aligned_ui;
+ struct ip aligned_ip, *ip = &aligned_ip;
+ struct ether_header *eh;
+ struct corehdr *coreh;
+ const char *mode = "octet";
+ char modelen = strlen(mode);
+#if defined(__LP64__)
+ size_t fmask_size = sizeof(KDP_FEATURE_MASK_STRING) + sizeof(kdp_crashdump_feature_mask);
+#else
+ size_t fmask_size = 0;
+#endif
+ pkt.off = sizeof (struct ether_header);
+ pkt.len = (unsigned int)(length + ((request == KDP_WRQ) ? modelen + fmask_size : 0) +
+ (corename ? strlen(corename): 0) + sizeof(struct corehdr));
+
+#if DO_ALIGN
+ bcopy((char *)&pkt.data[pkt.off], (char *)ui, sizeof(*ui));
+#else
+ ui = (struct udpiphdr *)&pkt.data[pkt.off];
+#endif
+ ui->ui_next = ui->ui_prev = 0;
+ ui->ui_x1 = 0;
+ ui->ui_pr = IPPROTO_UDP;
+ ui->ui_len = htons((u_short)pkt.len + sizeof (struct udphdr));
+ ui->ui_src.s_addr = (uint32_t)kdp_current_ip_address;
+ /* Already in network byte order via inet_aton() */
+ ui->ui_dst.s_addr = panic_server_ip;
+ ui->ui_sport = htons(panicd_port);
+ ui->ui_dport = ((request == KDP_WRQ) ? htons(panicd_port) : last_panic_port);
+ ui->ui_ulen = ui->ui_len;
+ ui->ui_sum = 0;
+#if DO_ALIGN
+ bcopy((char *)ui, (char *)&pkt.data[pkt.off], sizeof(*ui));
+ bcopy((char *)&pkt.data[pkt.off], (char *)ip, sizeof(*ip));
+#else
+ ip = (struct ip *)&pkt.data[pkt.off];
+#endif
+ ip->ip_len = htons(sizeof (struct udpiphdr) + pkt.len);
+ ip->ip_v = IPVERSION;
+ ip->ip_id = htons(ip_id++);
+ ip->ip_hl = sizeof (struct ip) >> 2;
+ ip->ip_ttl = udp_ttl;
+ ip->ip_sum = 0;
+ ip->ip_sum = htons(~ip_sum((unsigned char *)ip, ip->ip_hl));
+#if DO_ALIGN
+ bcopy((char *)ip, (char *)&pkt.data[pkt.off], sizeof(*ip));
+#endif
+
+ pkt.len += (unsigned int)sizeof (struct udpiphdr);
+
+ pkt.off += (unsigned int)sizeof (struct udpiphdr);
+
+ coreh = (struct corehdr *) &pkt.data[pkt.off];
+ coreh->th_opcode = htons((u_short)request);
+
+ if (request == KDP_WRQ)
+ {
+ char *cp;
+
+ cp = coreh->th_u.tu_rpl;
+ cp += strlcpy (cp, corename, KDP_MAXPACKET);
+ *cp++ = '\0';
+ cp += strlcpy (cp, mode, KDP_MAXPACKET - strlen(corename));
+ *cp++ = '\0';
+#if defined(__LP64__)
+ cp += strlcpy(cp, KDP_FEATURE_MASK_STRING, sizeof(KDP_FEATURE_MASK_STRING));
+ *cp++ = '\0'; /* Redundant */
+ bcopy(&kdp_crashdump_feature_mask, cp, sizeof(kdp_crashdump_feature_mask));
+#endif
+ }
+ else
+ {
+ coreh->th_block = htonl((unsigned int) block);
+ }
+
+ pkt.off -= (unsigned int)sizeof (struct udpiphdr);
+ pkt.off -= (unsigned int)sizeof (struct ether_header);
+
+ eh = (struct ether_header *)&pkt.data[pkt.off];
+ enaddr_copy(&kdp_current_mac_address, eh->ether_shost);
+ enaddr_copy(&destination_mac, eh->ether_dhost);
+ eh->ether_type = htons(ETHERTYPE_IP);
+
+ pkt.len += (unsigned int)sizeof (struct ether_header);
+ return coreh;
+}
+
+int kdp_send_crashdump_data(unsigned int request, char *corename,
+ uint64_t length, caddr_t txstart)
+{
+ caddr_t txend = txstart + length;
+ int panic_error = 0;
+
+ if (length <= SEGSIZE) {
+ if ((panic_error = kdp_send_crashdump_pkt(request, corename, length, (caddr_t) txstart)) < 0) {
+ printf ("kdp_send_crashdump_pkt failed with error %d\n", panic_error);
+ return panic_error ;
+ }
+ }
+ else
+ {
+ while (txstart <= (txend - SEGSIZE)) {
+ if ((panic_error = kdp_send_crashdump_pkt(KDP_DATA, NULL, SEGSIZE, txstart)) < 0) {
+ printf ("kdp_send_crashdump_pkt failed with error %d\n", panic_error);
+ return panic_error;
+ }
+ txstart += SEGSIZE;
+ if (!(panic_block % 2000))
+ kdb_printf_unbuffered(".");
+ }
+ if (txstart < txend) {
+ kdp_send_crashdump_pkt(request, corename, (unsigned int)(txend - txstart), txstart);
+ }
+ }
+ return 0;
+}
+
+int
+kdp_send_crashdump_pkt(unsigned int request, char *corename,
+ uint64_t length, void *panic_data)
+{
+ struct corehdr *th = NULL;
+ int poll_count = 2500;
+
+ char rretries = 0, tretries = 0;
+
+ pkt.off = pkt.len = 0;
+
+ if (request == KDP_WRQ) /* longer timeout for initial request */
+ poll_count += 1000;
+
+TRANSMIT_RETRY:
+ tretries++;
+
+ if (tretries >=15) {
+/* The crashdump server is unreachable for some reason. This could be a network
+ * issue or, if we've been especially unfortunate, we've hit Radar 2760413,
+ * which is a long standing problem with the IOKit polled mode network driver
+ * shim which can prevent transmits/receives completely.
+ */
+ printf ("Cannot contact panic server, timing out.\n");
+ return (-3);
+ }
+
+ if (tretries > 2)
+ printf("TX retry #%d ", tretries );
+
+ th = create_panic_header(request, corename, (unsigned)length, panic_block);
+
+ if (request == KDP_DATA) {
+ if (!kdp_machine_vm_read((mach_vm_address_t)(intptr_t)panic_data, (caddr_t) th->th_data, length)) {
+ memset ((caddr_t) th->th_data, 'X', (size_t)length);
+ }
+ }
+ else if (request == KDP_SEEK) {
+#if defined(__LP64__)
+ if (kdp_feature_large_crashdumps)
+ *(uint64_t *) th->th_data = OSSwapHostToBigInt64((*(uint64_t *) panic_data));
+ else
+#endif
+ *(unsigned int *) th->th_data = htonl(*(unsigned int *) panic_data);
+ }
+
+ (*kdp_en_send_pkt)(&pkt.data[pkt.off], pkt.len);
+
+ /* Listen for the ACK */
+RECEIVE_RETRY:
+ while (!pkt.input && flag_panic_dump_in_progress && poll_count) {
+ kdp_poll();
+ poll_count--;
+ }
+
+ if (pkt.input) {
+
+ pkt.input = FALSE;
+
+ th = (struct corehdr *) &pkt.data[pkt.off];
+#if defined(__LP64__)
+ if (request == KDP_WRQ) {
+ uint16_t opcode64 = ntohs(th->th_opcode);
+ uint16_t features64 = (opcode64 & 0xFF00)>>8;
+ if ((opcode64 & 0xFF) == KDP_ACK) {
+ kdp_feature_large_crashdumps = features64 & KDP_FEATURE_LARGE_CRASHDUMPS;
+ printf("Protocol features: 0x%x\n", (uint32_t) features64);
+ th->th_opcode = htons(KDP_ACK);
+ }
+ }
+#endif
+ if (ntohs(th->th_opcode) == KDP_ACK && ntohl(th->th_block) == panic_block) {
+ }
+ else
+ if (ntohs(th->th_opcode) == KDP_ERROR) {
+ printf("Panic server returned error %d, retrying\n", ntohl(th->th_code));
+ poll_count = 1000;
+ goto TRANSMIT_RETRY;
+ }
+ else
+ if (ntohl(th->th_block) == (panic_block - 1)) {
+ printf("RX retry ");
+ if (++rretries > 1)
+ goto TRANSMIT_RETRY;
+ else
+ goto RECEIVE_RETRY;
+ }
+ }
+ else
+ if (!flag_panic_dump_in_progress) /* we received a debugging packet, bail*/
+ {
+ printf("Received a debugger packet,transferring control to debugger\n");
+ /* Configure that if not set ..*/
+ kdp_flag |= DBG_POST_CORE;
+ return (-2);
+ }
+ else /* We timed out */
+ if (0 == poll_count) {
+ poll_count = 1000;
+ kdp_us_spin ((tretries%4) * panic_timeout); /* capped linear backoff */
+ goto TRANSMIT_RETRY;
+ }
+
+ panic_block++;
+
+ if (request == KDP_EOF)
+ printf("\nTotal number of packets transmitted: %d\n", panic_block);
+
+ return 1;
+}
+
+static int
+isdigit (char c)
+{
+ return ((c > 47) && (c < 58));
+}
+/* From user mode Libc - this ought to be in a library */
+static char *
+strnstr(char *s, const char *find, size_t slen)
+{
+ char c, sc;
+ size_t len;
+
+ if ((c = *find++) != '\0') {
+ len = strlen(find);
+ do {
+ do {
+ if ((sc = *s++) == '\0' || slen-- < 1)
+ return (NULL);
+ } while (sc != c);
+ if (len > slen)
+ return (NULL);
+ } while (strncmp(s, find, len) != 0);
+ s--;
+ }
+ return (s);
+}
+
+extern char version[];
+
+/* Horrid hack to extract xnu version if possible - a much cleaner approach
+ * would be to have the integrator run a script which would copy the
+ * xnu version into a string or an int somewhere at project submission
+ * time - makes assumptions about sizeof(version), but will not fail if
+ * it changes, but may be incorrect.
+ */
+/* 2006: Incorporated a change from Darwin user P. Lovell to extract
+ * the minor kernel version numbers from the version string.
+ */
+static int
+kdp_get_xnu_version(char *versionbuf)
+{
+ char *versionpos;
+ char vstr[20];
+ int retval = -1;
+ char *vptr;
+
+ strlcpy(vstr, "custom", 10);
+ if (strlcpy(versionbuf, version, 95) < 95) {
+ versionpos = strnstr(versionbuf, "xnu-", 90);
+ if (versionpos) {
+ strncpy(vstr, versionpos, sizeof(vstr));
+ vstr[sizeof(vstr)-1] = '\0';
+ vptr = vstr + 4; /* Begin after "xnu-" */
+ while (*vptr && (isdigit(*vptr) || *vptr == '.'))
+ vptr++;
+ *vptr = '\0';
+ /* Remove trailing period, if any */
+ if (*(--vptr) == '.')
+ *vptr = '\0';
+ retval = 0;
+ }
+ }
+ strlcpy(versionbuf, vstr, KDP_MAXPACKET);
+ return retval;
+}
+
+extern char *inet_aton(const char *cp, struct in_addr *pin);
+
+/* Primary dispatch routine for the system dump */
+void
+kdp_panic_dump(void)
+{
+ char corename[50];
+ char coreprefix[10];
+ int panic_error;
+
+ uint64_t abstime;
+ uint32_t current_ip = ntohl((uint32_t)kdp_current_ip_address);
+
+ if (flag_panic_dump_in_progress) {
+ printf("System dump aborted.\n");
+ goto panic_dump_exit;
+ }
+
+ printf("Entering system dump routine\n");
+
+ if (!panicd_specified) {
+ printf("A dump server was not specified in the boot-args, terminating kernel core dump.\n");
+ goto panic_dump_exit;
+ }
+
+ flag_panic_dump_in_progress = TRUE;
+ not_in_kdp = 0;
+
+ if (pkt.input)
+ kdp_panic("kdp_panic_dump: unexpected pending input packet");
+
+ kdp_get_xnu_version((char *) &pkt.data[0]);
+
+ /* Panic log bit takes precedence over core dump bit */
+ if ((panicstr != (char *) 0) && (kdp_flag & PANIC_LOG_DUMP))
+ strncpy(coreprefix, "paniclog", sizeof(coreprefix));
+ else
+ strncpy(coreprefix, "core", sizeof(coreprefix));
+
+ abstime = mach_absolute_time();
+ pkt.data[20] = '\0';
+ snprintf (corename, sizeof(corename), "%s-%s-%d.%d.%d.%d-%x",
+ coreprefix, &pkt.data[0],
+ (current_ip & 0xff000000) >> 24,
+ (current_ip & 0xff0000) >> 16,
+ (current_ip & 0xff00) >> 8,
+ (current_ip & 0xff),
+ (unsigned int) (abstime & 0xffffffff));
+
+ if (0 == inet_aton(panicd_ip_str, (struct in_addr *) &panic_server_ip)) {
+ printf("inet_aton() failed interpreting %s as a panic server IP\n", panicd_ip_str);
+ }
+ else
+ printf("Attempting connection to panic server configured at IP %s, port %d\n", panicd_ip_str, panicd_port);
+
+ destination_mac = router_mac;
+
+ if (kdp_arp_resolve(panic_server_ip, &temp_mac)) {
+ printf("Resolved %s's (or proxy's) link level address\n", panicd_ip_str);
+ destination_mac = temp_mac;
+ }
+ else {
+ if (!flag_panic_dump_in_progress) goto panic_dump_exit;
+ if (router_specified) {
+ if (0 == inet_aton(router_ip_str, (struct in_addr *) &parsed_router_ip))
+ printf("inet_aton() failed interpreting %s as an IP\n", router_ip_str);
+ else {
+ router_ip = parsed_router_ip;
+ if (kdp_arp_resolve(router_ip, &temp_mac)) {
+ destination_mac = temp_mac;
+ printf("Routing through specified router IP %s (%d)\n", router_ip_str, router_ip);
+ }
+ }
+ }
+ }
+
+ if (!flag_panic_dump_in_progress) goto panic_dump_exit;
+
+ printf("Transmitting packets to link level address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ destination_mac.ether_addr_octet[0] & 0xff,
+ destination_mac.ether_addr_octet[1] & 0xff,
+ destination_mac.ether_addr_octet[2] & 0xff,
+ destination_mac.ether_addr_octet[3] & 0xff,
+ destination_mac.ether_addr_octet[4] & 0xff,
+ destination_mac.ether_addr_octet[5] & 0xff);
+
+ printf("Kernel map size is %llu\n", (unsigned long long) get_vmmap_size(kernel_map));
+ printf("Sending write request for %s\n", corename);
+
+ if ((panic_error = kdp_send_crashdump_pkt(KDP_WRQ, corename, 0 , NULL)) < 0) {
+ printf ("kdp_send_crashdump_pkt failed with error %d\n", panic_error);
+ goto panic_dump_exit;
+ }
+
+ /* Just the panic log requested */
+ if ((panicstr != (char *) 0) && (kdp_flag & PANIC_LOG_DUMP)) {
+ printf("Transmitting panic log, please wait: ");
+ kdp_send_crashdump_data(KDP_DATA, corename, (unsigned int)(debug_buf_ptr - debug_buf), debug_buf);
+ kdp_send_crashdump_pkt (KDP_EOF, NULL, 0, ((void *) 0));
+ printf("Please file a bug report on this panic, if possible.\n");
+ goto panic_dump_exit;
+ }
+
+ /* We want a core dump if we're here */
+ kern_dump();
+panic_dump_exit:
+ abort_panic_transfer();
+ pkt.input = FALSE;
+ pkt.len = 0;
+ kdp_reset();
+ return;
+}
+
+void
+abort_panic_transfer(void)
+{
+ flag_panic_dump_in_progress = FALSE;
+ not_in_kdp = 1;
+ panic_block = 0;
+}
+
+#if CONFIG_SERIAL_KDP
+
+static boolean_t needs_serial_init = TRUE;
+
+static void
+kdp_serial_send(void *rpkt, unsigned int rpkt_len)
+{
+ if (needs_serial_init)
+ {
+ serial_init();
+ needs_serial_init = FALSE;
+ }
+
+ // printf("tx\n");
+ kdp_serialize_packet((unsigned char *)rpkt, rpkt_len, serial_putc);
+}
+
+static void
+kdp_serial_receive(void *rpkt, unsigned int *rpkt_len, unsigned int timeout)
+{
+ int readkar;
+ uint64_t now, deadline;
+
+ if (needs_serial_init)
+ {
+ serial_init();
+ needs_serial_init = FALSE;
+ }
+
+ clock_interval_to_deadline(timeout, 1000 * 1000 /* milliseconds */, &deadline);
+
+// printf("rx\n");
+ for(clock_get_uptime(&now); now < deadline; clock_get_uptime(&now))
+ {
+ readkar = serial_getc();
+ if(readkar >= 0)
+ {
+ unsigned char *packet;
+ // printf("got char %02x\n", readkar);
+ if((packet = kdp_unserialize_packet(readkar,rpkt_len)))
+ {
+ memcpy(rpkt, packet, *rpkt_len);
+ return;
+ }
+ }
+ }
+ *rpkt_len = 0;
+}
+
+static void kdp_serial_callout(__unused void *arg, kdp_event_t event)
+{
+ /* When we stop KDP, set the bit to re-initialize the console serial port
+ * the next time we send/receive a KDP packet. We don't do it on
+ * KDP_EVENT_ENTER directly because it also gets called when we trap to KDP
+ * for non-external debugging, i.e., stackshot or core dumps.
+ *
+ * Set needs_serial_init on exit (and initialization, see above) and not
+ * enter because enter is sent multiple times and causes excess reinitialization.
+ */
+
+ switch (event)
+ {
+ case KDP_EVENT_PANICLOG:
+ case KDP_EVENT_ENTER:
+ break;
+ case KDP_EVENT_EXIT:
+ needs_serial_init = TRUE;
+ break;
+ }
+}
+
+#endif /* CONFIG_SERIAL_KDP */
+
+void
+kdp_init(void)
+{
+#if CONFIG_SERIAL_KDP
+ char kdpname[80];
+ struct in_addr ipaddr;
+ struct ether_addr macaddr;
+
+
+#if CONFIG_EMBEDDED
+ //serial will be the debugger, unless match name is explicitly provided, and it's not "serial"
+ if(PE_parse_boot_argn("kdp_match_name", kdpname, sizeof(kdpname)) && strncmp(kdpname, "serial", sizeof(kdpname)) != 0)
+ return;
+#else
+ // serial must be explicitly requested
+ if(!PE_parse_boot_argn("kdp_match_name", kdpname, sizeof(kdpname)) || strncmp(kdpname, "serial", sizeof(kdpname)) != 0)
+ return;
+#endif
+
+ kprintf("Intializing serial KDP\n");
+
+ kdp_register_callout(kdp_serial_callout, NULL);
+ kdp_register_send_receive(kdp_serial_send, kdp_serial_receive);
+
+ /* fake up an ip and mac for early serial debugging */
+ macaddr.ether_addr_octet[0] = 's';
+ macaddr.ether_addr_octet[1] = 'e';
+ macaddr.ether_addr_octet[2] = 'r';
+ macaddr.ether_addr_octet[3] = 'i';
+ macaddr.ether_addr_octet[4] = 'a';
+ macaddr.ether_addr_octet[5] = 'l';
+ ipaddr.s_addr = 0xABADBABE;
+ kdp_set_ip_and_mac_addresses(&ipaddr, &macaddr);
+#endif /* CONFIG_SERIAL_KDP */
+}
projects / apple / xnu.git / blobdiff