/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_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 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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.
+ *
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
*/
-#include <mach_kdp.h>
#include <mach/mach_types.h>
#include <mach/machine.h>
#include <mach/exception_types.h>
#include <i386/trap.h>
#include <i386/mp.h>
#include <kdp/kdp_internal.h>
-#include <mach-o/loader.h>
-#include <mach-o/nlist.h>
-#include <IOKit/IOPlatformExpert.h> /* for PE_halt_restart */
-#include <kern/machine.h> /* for halt_all_cpus */
-
-#include <kern/thread.h>
-#include <i386/thread.h>
-#include <vm/vm_map.h>
-#include <i386/pmap.h>
#define KDP_TEST_HARNESS 0
#if KDP_TEST_HARNESS
#define dprintf(x)
#endif
-extern cpu_type_t cpuid_cputype(void);
-extern cpu_subtype_t cpuid_cpusubtype(void);
+extern void kdreboot(void);
void print_saved_state(void *);
void kdp_call(void);
void kdp_getstate(i386_thread_state_t *);
void kdp_setstate(i386_thread_state_t *);
void kdp_print_phys(int);
-
-int
-machine_trace_thread(thread_t thread, uint32_t tracepos, uint32_t tracebound, int nframes, boolean_t user_p);
-
-int
-machine_trace_thread64(thread_t thread, uint32_t tracepos, uint32_t tracebound, int nframes, boolean_t user_p);
-
-extern unsigned kdp_vm_read(caddr_t src, caddr_t dst, unsigned len);
+void kdp_i386_backtrace(void *, int);
+void kdp_i386_trap(
+ unsigned int,
+ struct i386_saved_state *,
+ kern_return_t,
+ vm_offset_t);
void
kdp_exception(
void
kdp_getstate(
- x86_thread_state32_t *state
+ i386_thread_state_t *state
)
{
- static x86_thread_state32_t null_state;
- x86_saved_state32_t *saved_state;
+ static i386_thread_state_t null_state;
+ struct i386_saved_state *saved_state;
- saved_state = (x86_saved_state32_t *)kdp.saved_state;
+ saved_state = (struct i386_saved_state *)kdp.saved_state;
*state = null_state;
state->eax = saved_state->eax;
void
kdp_setstate(
- x86_thread_state32_t *state
+ i386_thread_state_t *state
)
{
- x86_saved_state32_t *saved_state;
+ struct i386_saved_state *saved_state;
- saved_state = (x86_saved_state32_t *)kdp.saved_state;
+ saved_state = (struct i386_saved_state *)kdp.saved_state;
saved_state->eax = state->eax;
saved_state->ebx = state->ebx;
__unused int *size
)
{
- static struct i386_float_state null_fpstate;
+ static i386_thread_fpstate_t null_fpstate;
switch (flavor) {
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
+ case i386_THREAD_STATE:
dprintf(("kdp_readregs THREAD_STATE\n"));
- kdp_getstate((x86_thread_state32_t *)data);
- *size = sizeof (x86_thread_state32_t);
+ kdp_getstate((i386_thread_state_t *)data);
+ *size = sizeof (i386_thread_state_t);
return KDPERR_NO_ERROR;
- case x86_FLOAT_STATE32:
+ case i386_THREAD_FPSTATE:
dprintf(("kdp_readregs THREAD_FPSTATE\n"));
- *(x86_float_state32_t *)data = null_fpstate;
- *size = sizeof (x86_float_state32_t);
+ *(i386_thread_fpstate_t *)data = null_fpstate;
+ *size = sizeof (i386_thread_fpstate_t);
return KDPERR_NO_ERROR;
default:
{
switch (flavor) {
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
+ case i386_THREAD_STATE:
dprintf(("kdp_writeregs THREAD_STATE\n"));
- kdp_setstate((x86_thread_state32_t *)data);
+ kdp_setstate((i386_thread_state_t *)data);
return KDPERR_NO_ERROR;
- case x86_FLOAT_STATE32:
+ case i386_THREAD_FPSTATE:
dprintf(("kdp_writeregs THREAD_FPSTATE\n"));
return KDPERR_NO_ERROR;
hostinfo->cpus_mask |= (1 << i);
}
- hostinfo->cpu_type = cpuid_cputype();
- hostinfo->cpu_subtype = cpuid_cpusubtype();
+ /* FIXME?? */
+ hostinfo->cpu_type = CPU_TYPE_I386;
+ hostinfo->cpu_subtype = CPU_SUBTYPE_486;
}
void
void
kdp_reboot(void)
{
- printf("Attempting system restart...");
- /* Call the platform specific restart*/
- if (PE_halt_restart)
- (*PE_halt_restart)(kPERestartCPU);
- /* If we do reach this, give up */
- halt_all_cpus(TRUE);
+ kdreboot();
}
int
void print_saved_state(void *state)
{
- x86_saved_state32_t *saved_state;
+ struct i386_saved_state *saved_state;
saved_state = state;
kprintf("pc = 0x%x\n", saved_state->eip);
- kprintf("cr2= 0x%x\n", saved_state->cr2);
+ kprintf("cr3= 0x%x\n", saved_state->cr2);
kprintf("rp = TODO FIXME\n");
- kprintf("sp = 0x%x\n", saved_state);
+ kprintf("sp = 0x%x\n", saved_state->esp);
}
}
-boolean_t
+
+#define MAX_FRAME_DELTA 65536
+
+void
+kdp_i386_backtrace(void *_frame, int nframes)
+{
+ cframe_t *frame = (cframe_t *)_frame;
+ int i;
+
+ for (i=0; i<nframes; i++) {
+ if ((vm_offset_t)frame < VM_MIN_KERNEL_ADDRESS ||
+ (vm_offset_t)frame > VM_MAX_KERNEL_ADDRESS) {
+ goto invalid;
+ }
+ kprintf("frame 0x%x called by 0x%x ",
+ frame, frame->caller);
+ kprintf("args 0x%x 0x%x 0x%x 0x%x\n",
+ frame->args[0], frame->args[1],
+ frame->args[2], frame->args[3]);
+ if ((frame->prev < frame) || /* wrong direction */
+ ((frame->prev - frame) > MAX_FRAME_DELTA)) {
+ goto invalid;
+ }
+ frame = frame->prev;
+ }
+ return;
+invalid:
+ kprintf("invalid frame pointer 0x%x\n",frame);
+}
+
+void
kdp_i386_trap(
- unsigned int trapno,
- x86_saved_state32_t *saved_state,
+ unsigned int trapno,
+ struct i386_saved_state *saved_state,
kern_return_t result,
vm_offset_t va
)
{
unsigned int exception, subcode = 0, code;
- if (trapno != T_INT3 && trapno != T_DEBUG) {
- kprintf("unexpected kernel trap 0x%x eip 0x%x cr2 0x%x \n",
- trapno, saved_state->eip, saved_state->cr2);
- if (!kdp.is_conn)
- return FALSE;
- }
-
mp_kdp_enter();
+ if (trapno != T_INT3 && trapno != T_DEBUG)
+ kprintf("unexpected kernel trap 0x%x eip 0x%x cr2 0x%x \n",
+ trapno, saved_state->eip, saved_state->esp);
+
switch (trapno) {
case T_DIVIDE_ERROR:
break;
}
+ kdp_i386_backtrace((void *) saved_state->ebp, 10);
+
kdp_raise_exception(exception, code, subcode, saved_state);
mp_kdp_exit();
-
- return TRUE;
}
boolean_t
{
return 0xcc;
}
-extern pmap_t kdp_pmap;
-
-#define RETURN_OFFSET 4
-int
-machine_trace_thread(thread_t thread, uint32_t tracepos, uint32_t tracebound, int nframes, boolean_t user_p)
-{
- uint32_t *tracebuf = (uint32_t *)tracepos;
- uint32_t fence = 0;
- uint32_t stackptr = 0;
- uint32_t stacklimit = 0xfc000000;
- int framecount = 0;
- uint32_t init_eip = 0;
- uint32_t prevsp = 0;
- uint32_t framesize = 2 * sizeof(vm_offset_t);
-
- if (user_p) {
- x86_saved_state32_t *iss32;
-
- iss32 = USER_REGS32(thread);
-
- init_eip = iss32->eip;
- stackptr = iss32->ebp;
-
- /* This bound isn't useful, but it doesn't hinder us*/
- stacklimit = 0xffffffff;
- kdp_pmap = thread->task->map->pmap;
- }
- else {
- /*Examine the i386_saved_state at the base of the kernel stack*/
- stackptr = STACK_IKS(thread->kernel_stack)->k_ebp;
- init_eip = STACK_IKS(thread->kernel_stack)->k_eip;
- }
-
- *tracebuf++ = init_eip;
-
- for (framecount = 0; framecount < nframes; framecount++) {
-
- if ((tracebound - ((uint32_t) tracebuf)) < (4 * framesize)) {
- tracebuf--;
- break;
- }
-
- *tracebuf++ = stackptr;
-/* Invalid frame, or hit fence */
- if (!stackptr || (stackptr == fence)) {
- break;
- }
- /* Stack grows downward */
- if (stackptr < prevsp) {
- break;
- }
- /* Unaligned frame */
- if (stackptr & 0x0000003) {
- break;
- }
- if (stackptr > stacklimit) {
- break;
- }
-
- if (kdp_vm_read((caddr_t) (stackptr + RETURN_OFFSET), (caddr_t) tracebuf, sizeof(caddr_t)) != sizeof(caddr_t)) {
- break;
- }
- tracebuf++;
-
- prevsp = stackptr;
- if (kdp_vm_read((caddr_t) stackptr, (caddr_t) &stackptr, sizeof(caddr_t)) != sizeof(caddr_t)) {
- *tracebuf++ = 0;
- break;
- }
- }
-
- kdp_pmap = 0;
-
- return ((uint32_t) tracebuf - tracepos);
-}
-
-/* This is a stub until the x86 64-bit model becomes clear */
-int
-machine_trace_thread64(__unused thread_t thread, __unused uint32_t tracepos, __unused uint32_t tracebound, __unused int nframes, __unused boolean_t user_p) {
- return 0;
-}
projects / apple / xnu.git / blobdiff