X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/21362eb3e66fd2c787aee132bce100a44d71a99c..0c530ab8987f0ae6a1a3d9284f40182b88852816:/osfmk/kdp/ml/i386/kdp_machdep.c?ds=inline diff --git a/osfmk/kdp/ml/i386/kdp_machdep.c b/osfmk/kdp/ml/i386/kdp_machdep.c index 2eb2d4c3a..09e93e2b4 100644 --- a/osfmk/kdp/ml/i386/kdp_machdep.c +++ b/osfmk/kdp/ml/i386/kdp_machdep.c @@ -1,31 +1,26 @@ /* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * - * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * @APPLE_LICENSE_HEADER_START@ * - * 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. + * 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. * - * 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 + * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the + * License for the specific language governing rights and limitations + * under the License. * - * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ + * @APPLE_LICENSE_HEADER_END@ */ +#include #include #include #include @@ -33,6 +28,15 @@ #include #include #include +#include +#include +#include /* for PE_halt_restart */ +#include /* for halt_all_cpus */ + +#include +#include +#include +#include #define KDP_TEST_HARNESS 0 #if KDP_TEST_HARNESS @@ -41,7 +45,8 @@ #define dprintf(x) #endif -extern void kdreboot(void); +extern cpu_type_t cpuid_cputype(void); +extern cpu_subtype_t cpuid_cpusubtype(void); void print_saved_state(void *); void kdp_call(void); @@ -50,12 +55,14 @@ boolean_t kdp_call_kdb(void); void kdp_getstate(i386_thread_state_t *); void kdp_setstate(i386_thread_state_t *); void kdp_print_phys(int); -void kdp_i386_backtrace(void *, int); -void kdp_i386_trap( - unsigned int, - struct i386_saved_state *, - kern_return_t, - vm_offset_t); + +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_exception( @@ -116,13 +123,13 @@ kdp_exception_ack( void kdp_getstate( - i386_thread_state_t *state + x86_thread_state32_t *state ) { - static i386_thread_state_t null_state; - struct i386_saved_state *saved_state; + static x86_thread_state32_t null_state; + x86_saved_state32_t *saved_state; - saved_state = (struct i386_saved_state *)kdp.saved_state; + saved_state = (x86_saved_state32_t *)kdp.saved_state; *state = null_state; state->eax = saved_state->eax; @@ -153,12 +160,12 @@ kdp_getstate( void kdp_setstate( - i386_thread_state_t *state + x86_thread_state32_t *state ) { - struct i386_saved_state *saved_state; + x86_saved_state32_t *saved_state; - saved_state = (struct i386_saved_state *)kdp.saved_state; + saved_state = (x86_saved_state32_t *)kdp.saved_state; saved_state->eax = state->eax; saved_state->ebx = state->ebx; @@ -186,20 +193,21 @@ kdp_machine_read_regs( __unused int *size ) { - static i386_thread_fpstate_t null_fpstate; + static struct i386_float_state null_fpstate; switch (flavor) { - case i386_THREAD_STATE: + case OLD_i386_THREAD_STATE: + case x86_THREAD_STATE32: dprintf(("kdp_readregs THREAD_STATE\n")); - kdp_getstate((i386_thread_state_t *)data); - *size = sizeof (i386_thread_state_t); + kdp_getstate((x86_thread_state32_t *)data); + *size = sizeof (x86_thread_state32_t); return KDPERR_NO_ERROR; - case i386_THREAD_FPSTATE: + case x86_FLOAT_STATE32: dprintf(("kdp_readregs THREAD_FPSTATE\n")); - *(i386_thread_fpstate_t *)data = null_fpstate; - *size = sizeof (i386_thread_fpstate_t); + *(x86_float_state32_t *)data = null_fpstate; + *size = sizeof (x86_float_state32_t); return KDPERR_NO_ERROR; default: @@ -219,12 +227,13 @@ kdp_machine_write_regs( { switch (flavor) { - case i386_THREAD_STATE: + case OLD_i386_THREAD_STATE: + case x86_THREAD_STATE32: dprintf(("kdp_writeregs THREAD_STATE\n")); - kdp_setstate((i386_thread_state_t *)data); + kdp_setstate((x86_thread_state32_t *)data); return KDPERR_NO_ERROR; - case i386_THREAD_FPSTATE: + case x86_FLOAT_STATE32: dprintf(("kdp_writeregs THREAD_FPSTATE\n")); return KDPERR_NO_ERROR; @@ -252,9 +261,8 @@ kdp_machine_hostinfo( hostinfo->cpus_mask |= (1 << i); } - /* FIXME?? */ - hostinfo->cpu_type = CPU_TYPE_I386; - hostinfo->cpu_subtype = CPU_SUBTYPE_486; + hostinfo->cpu_type = cpuid_cputype(); + hostinfo->cpu_subtype = cpuid_cpusubtype(); } void @@ -270,7 +278,12 @@ kdp_panic( void kdp_reboot(void) { - kdreboot(); + 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); } int @@ -299,14 +312,14 @@ kdp_us_spin(int usec) void print_saved_state(void *state) { - struct i386_saved_state *saved_state; + x86_saved_state32_t *saved_state; saved_state = state; kprintf("pc = 0x%x\n", saved_state->eip); - kprintf("cr3= 0x%x\n", saved_state->cr2); + kprintf("cr2= 0x%x\n", saved_state->cr2); kprintf("rp = TODO FIXME\n"); - kprintf("sp = 0x%x\n", saved_state->esp); + kprintf("sp = 0x%x\n", saved_state); } @@ -352,51 +365,24 @@ kdp_print_phys(int src) } - -#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 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 +boolean_t kdp_i386_trap( - unsigned int trapno, - struct i386_saved_state *saved_state, + unsigned int trapno, + x86_saved_state32_t *saved_state, kern_return_t result, vm_offset_t va ) { unsigned int exception, subcode = 0, code; - mp_kdp_enter(); - - if (trapno != T_INT3 && trapno != T_DEBUG) + 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); + trapno, saved_state->eip, saved_state->cr2); + if (!kdp.is_conn) + return FALSE; + } + + mp_kdp_enter(); switch (trapno) { @@ -461,11 +447,11 @@ kdp_i386_trap( break; } - kdp_i386_backtrace((void *) saved_state->ebp, 10); - kdp_raise_exception(exception, code, subcode, saved_state); mp_kdp_exit(); + + return TRUE; } boolean_t @@ -480,3 +466,84 @@ kdp_ml_get_breakinsn(void) { 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; +}