/*
- * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_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
* 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,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
-/*
+/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
- *
+ *
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
- *
+ *
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
+ *
* Carnegie Mellon requests users of this software to return to
- *
+ *
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
- *
+ *
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#include <mach/thread_status.h>
#include <mach/vm_param.h>
-#include <kern/counters.h>
#include <kern/kalloc.h>
#include <kern/mach_param.h>
#include <kern/processor.h>
#include <i386/thread.h>
#include <i386/machine_routines.h>
#include <i386/lapic.h> /* LAPIC_PMC_SWI_VECTOR */
+#include <i386/seg.h>
#if HYPERVISOR
#include <kern/hv_support.h>
* Maps state flavor to number of words in the state:
*/
unsigned int _MachineStateCount[] = {
- [x86_THREAD_STATE32] = x86_THREAD_STATE32_COUNT,
- [x86_THREAD_STATE64] = x86_THREAD_STATE64_COUNT,
- [x86_THREAD_STATE] = x86_THREAD_STATE_COUNT,
- [x86_FLOAT_STATE32] = x86_FLOAT_STATE32_COUNT,
- [x86_FLOAT_STATE64] = x86_FLOAT_STATE64_COUNT,
- [x86_FLOAT_STATE] = x86_FLOAT_STATE_COUNT,
- [x86_EXCEPTION_STATE32] = x86_EXCEPTION_STATE32_COUNT,
- [x86_EXCEPTION_STATE64] = x86_EXCEPTION_STATE64_COUNT,
- [x86_EXCEPTION_STATE] = x86_EXCEPTION_STATE_COUNT,
- [x86_DEBUG_STATE32] = x86_DEBUG_STATE32_COUNT,
- [x86_DEBUG_STATE64] = x86_DEBUG_STATE64_COUNT,
- [x86_DEBUG_STATE] = x86_DEBUG_STATE_COUNT,
- [x86_AVX_STATE32] = x86_AVX_STATE32_COUNT,
- [x86_AVX_STATE64] = x86_AVX_STATE64_COUNT,
- [x86_AVX_STATE] = x86_AVX_STATE_COUNT,
-#if !defined(RC_HIDE_XNU_J137)
- [x86_AVX512_STATE32] = x86_AVX512_STATE32_COUNT,
- [x86_AVX512_STATE64] = x86_AVX512_STATE64_COUNT,
- [x86_AVX512_STATE] = x86_AVX512_STATE_COUNT,
-#endif /* not RC_HIDE_XNU_J137 */
+ [x86_THREAD_STATE32] = x86_THREAD_STATE32_COUNT,
+ [x86_THREAD_STATE64] = x86_THREAD_STATE64_COUNT,
+ [x86_THREAD_FULL_STATE64] = x86_THREAD_FULL_STATE64_COUNT,
+ [x86_THREAD_STATE] = x86_THREAD_STATE_COUNT,
+ [x86_FLOAT_STATE32] = x86_FLOAT_STATE32_COUNT,
+ [x86_FLOAT_STATE64] = x86_FLOAT_STATE64_COUNT,
+ [x86_FLOAT_STATE] = x86_FLOAT_STATE_COUNT,
+ [x86_EXCEPTION_STATE32] = x86_EXCEPTION_STATE32_COUNT,
+ [x86_EXCEPTION_STATE64] = x86_EXCEPTION_STATE64_COUNT,
+ [x86_EXCEPTION_STATE] = x86_EXCEPTION_STATE_COUNT,
+ [x86_DEBUG_STATE32] = x86_DEBUG_STATE32_COUNT,
+ [x86_DEBUG_STATE64] = x86_DEBUG_STATE64_COUNT,
+ [x86_DEBUG_STATE] = x86_DEBUG_STATE_COUNT,
+ [x86_AVX_STATE32] = x86_AVX_STATE32_COUNT,
+ [x86_AVX_STATE64] = x86_AVX_STATE64_COUNT,
+ [x86_AVX_STATE] = x86_AVX_STATE_COUNT,
+ [x86_AVX512_STATE32] = x86_AVX512_STATE32_COUNT,
+ [x86_AVX512_STATE64] = x86_AVX512_STATE64_COUNT,
+ [x86_AVX512_STATE] = x86_AVX512_STATE_COUNT,
+ [x86_PAGEIN_STATE] = x86_PAGEIN_STATE_COUNT
};
-zone_t iss_zone; /* zone for saved_state area */
-zone_t ids_zone; /* zone for debug_state area */
+ZONE_DECLARE(iss_zone, "x86_64 saved state",
+ sizeof(x86_saved_state_t), ZC_NONE);
+
+ZONE_DECLARE(ids_zone, "x86_64 debug state",
+ sizeof(x86_debug_state64_t), ZC_NONE);
/* Forward */
-extern void Thread_continue(void);
-extern void Load_context(
- thread_t thread) __attribute__((noreturn));
+extern void Thread_continue(void);
+extern void Load_context(
+ thread_t thread) __attribute__((noreturn));
static void
get_exception_state32(thread_t thread, x86_exception_state32_t *es);
get_thread_state32(thread_t thread, x86_thread_state32_t *ts);
static void
-get_thread_state64(thread_t thread, x86_thread_state64_t *ts);
+get_thread_state64(thread_t thread, void *ts, boolean_t full);
static int
set_thread_state32(thread_t thread, x86_thread_state32_t *ts);
static int
-set_thread_state64(thread_t thread, x86_thread_state64_t *ts);
+set_thread_state64(thread_t thread, void *ts, boolean_t full);
#if HYPERVISOR
static inline void
ml_hv_cswitch(thread_t old, thread_t new)
{
- if (old->hv_thread_target)
+ if (old->hv_thread_target) {
hv_callbacks.preempt(old->hv_thread_target);
+ }
- if (new->hv_thread_target)
- hv_callbacks.dispatch(new->hv_thread_target);
+ if (new->hv_thread_target) {
+ hv_callbacks.dispatch(new->hv_thread_target);
+ }
}
#endif
* If the DE bit is set in CR4, R/W0-3 can be pattern
* "10B" to indicate i/o reads and write
*/
- if (!(get_cr4() & CR4_DE))
- for (i = 0, mask1 = 0x3<<16, mask2 = 0x2<<16; i < 4;
- i++, mask1 <<= 4, mask2 <<= 4)
- if ((*dr7d & mask1) == mask2)
- return (FALSE);
+ if (!(get_cr4() & CR4_DE)) {
+ for (i = 0, mask1 = 0x3 << 16, mask2 = 0x2 << 16; i < 4;
+ i++, mask1 <<= 4, mask2 <<= 4) {
+ if ((*dr7d & mask1) == mask2) {
+ return FALSE;
+ }
+ }
+ }
/*
* if we are doing an instruction execution break (indicated
* by r/w[x] being "00B"), then the len[x] must also be set
* to "00B"
*/
- for (i = 0; i < 4; i++)
- if (((((*dr7d >> (16 + i*4))) & 0x3) == 0) &&
- ((((*dr7d >> (18 + i*4))) & 0x3) != 0))
- return (FALSE);
+ for (i = 0; i < 4; i++) {
+ if (((((*dr7d >> (16 + i * 4))) & 0x3) == 0) &&
+ ((((*dr7d >> (18 + i * 4))) & 0x3) != 0)) {
+ return FALSE;
+ }
+ }
/*
* Intel docs have these bits fixed.
* We don't allow anything to set the global breakpoints.
*/
- if (*dr7d & 0x2)
- return (FALSE);
+ if (*dr7d & 0x2) {
+ return FALSE;
+ }
- if (*dr7d & (0x2<<2))
- return (FALSE);
+ if (*dr7d & (0x2 << 2)) {
+ return FALSE;
+ }
- if (*dr7d & (0x2<<4))
- return (FALSE);
+ if (*dr7d & (0x2 << 4)) {
+ return FALSE;
+ }
- if (*dr7d & (0x2<<6))
- return (FALSE);
+ if (*dr7d & (0x2 << 6)) {
+ return FALSE;
+ }
- return (TRUE);
+ return TRUE;
}
extern void set_64bit_debug_regs(x86_debug_state64_t *ds);
boolean_t
-debug_state_is_valid32(x86_debug_state32_t *ds)
+debug_state_is_valid32(x86_debug_state32_t *ds)
{
- if (!dr7d_is_valid(&ds->dr7))
+ if (!dr7d_is_valid(&ds->dr7)) {
return FALSE;
+ }
return TRUE;
}
boolean_t
debug_state_is_valid64(x86_debug_state64_t *ds)
{
- if (!dr7d_is_valid((uint32_t *)&ds->dr7))
+ if (!dr7d_is_valid((uint32_t *)&ds->dr7)) {
return FALSE;
+ }
/*
* Don't allow the user to set debug addresses above their max
* value
*/
- if (ds->dr7 & 0x1)
- if (ds->dr0 >= VM_MAX_PAGE_ADDRESS)
+ if (ds->dr7 & 0x1) {
+ if (ds->dr0 >= VM_MAX_PAGE_ADDRESS) {
return FALSE;
+ }
+ }
- if (ds->dr7 & (0x1<<2))
- if (ds->dr1 >= VM_MAX_PAGE_ADDRESS)
+ if (ds->dr7 & (0x1 << 2)) {
+ if (ds->dr1 >= VM_MAX_PAGE_ADDRESS) {
return FALSE;
+ }
+ }
- if (ds->dr7 & (0x1<<4))
- if (ds->dr2 >= VM_MAX_PAGE_ADDRESS)
+ if (ds->dr7 & (0x1 << 4)) {
+ if (ds->dr2 >= VM_MAX_PAGE_ADDRESS) {
return FALSE;
+ }
+ }
- if (ds->dr7 & (0x1<<6))
- if (ds->dr3 >= VM_MAX_PAGE_ADDRESS)
+ if (ds->dr7 & (0x1 << 6)) {
+ if (ds->dr3 >= VM_MAX_PAGE_ADDRESS) {
return FALSE;
+ }
+ }
/* For x86-64, we must ensure the upper 32-bits of DR7 are clear */
ds->dr7 &= 0xffffffffULL;
new_ids = zalloc(ids_zone);
bzero(new_ids, sizeof *new_ids);
- simple_lock(&pcb->lock);
+ simple_lock(&pcb->lock, LCK_GRP_NULL);
/* make sure it wasn't already alloc()'d elsewhere */
if (pcb->ids == NULL) {
pcb->ids = new_ids;
copy_debug_state32(ds, pcb->ids, FALSE);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
static kern_return_t
#if HYPERVISOR
if (thread->hv_thread_target) {
hv_callbacks.volatile_state(thread->hv_thread_target,
- HV_DEBUG_STATE);
+ HV_DEBUG_STATE);
}
#endif
- simple_lock(&pcb->lock);
+ simple_lock(&pcb->lock, LCK_GRP_NULL);
/* make sure it wasn't already alloc()'d elsewhere */
if (pcb->ids == NULL) {
pcb->ids = new_ids;
copy_debug_state64(ds, pcb->ids, FALSE);
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
static void
if (saved_state) {
copy_debug_state32(saved_state, ds, TRUE);
- } else
+ } else {
bzero(ds, sizeof *ds);
+ }
}
static void
if (saved_state) {
copy_debug_state64(saved_state, ds, TRUE);
- } else
+ } else {
bzero(ds, sizeof *ds);
+ }
}
/*
*/
void
machine_load_context(
- thread_t new)
+ thread_t new)
{
new->machine.specFlags |= OnProc;
act_machine_switch_pcb(NULL, new);
Load_context(new);
}
-static inline void pmap_switch_context(thread_t ot, thread_t nt, int cnum) {
+static inline void
+pmap_switch_context(thread_t ot, thread_t nt, int cnum)
+{
pmap_assert(ml_get_interrupts_enabled() == FALSE);
vm_map_t nmap = nt->map, omap = ot->map;
if ((omap != nmap) || (nmap->pmap->pagezero_accessible)) {
*/
thread_t
machine_switch_context(
- thread_t old,
- thread_continue_t continuation,
- thread_t new)
+ thread_t old,
+ thread_continue_t continuation,
+ thread_t new)
{
assert(current_cpu_datap()->cpu_active_stack == old->kernel_stack);
* Monitor the stack depth and report new max,
* not worrying about races.
*/
- vm_offset_t depth = current_stack_depth();
+ vm_offset_t depth = current_stack_depth();
if (depth > kernel_stack_depth_max) {
kernel_stack_depth_max = depth;
KERNEL_DEBUG_CONSTANT(
ml_hv_cswitch(old, new);
#endif
- return(Switch_context(old, continuation, new));
+ return Switch_context(old, continuation, new);
}
-thread_t
+boolean_t
+machine_thread_on_core(thread_t thread)
+{
+ return thread->machine.specFlags & OnProc;
+}
+
+thread_t
machine_processor_shutdown(
- thread_t thread,
- void (*doshutdown)(processor_t),
- processor_t processor)
+ thread_t thread,
+ void (*doshutdown)(processor_t),
+ processor_t processor)
{
#if CONFIG_VMX
vmx_suspend();
#endif
fpu_switch_context(thread, NULL);
pmap_switch_context(thread, processor->idle_thread, cpu_number());
- return(Shutdown_context(thread, doshutdown, processor));
+ return Shutdown_context(thread, doshutdown, processor);
}
machine_thread_state_initialize(
thread_t thread)
{
- /*
- * If there's an fpu save area, free it.
- * The initialized state will then be lazily faulted-in, if required.
- * And if we're target, re-arm the no-fpu trap.
- */
+ /*
+ * If there's an fpu save area, free it.
+ * The initialized state will then be lazily faulted-in, if required.
+ * And if we're target, re-arm the no-fpu trap.
+ */
if (thread->machine.ifps) {
(void) fpu_set_fxstate(thread, NULL, x86_FLOAT_STATE64);
- if (thread == current_thread())
+ if (thread == current_thread()) {
clear_fpu();
+ }
}
if (thread->machine.ids) {
thread->machine.ids = NULL;
}
- return KERN_SUCCESS;
+ return KERN_SUCCESS;
}
uint32_t
* for either 32bit or 64bit tasks
*/
-
+
static void
get_exception_state64(thread_t thread, x86_exception_state64_t *es)
{
- x86_saved_state64_t *saved_state;
+ x86_saved_state64_t *saved_state;
- saved_state = USER_REGS64(thread);
+ saved_state = USER_REGS64(thread);
es->trapno = saved_state->isf.trapno;
es->cpu = saved_state->isf.cpu;
es->err = (typeof(es->err))saved_state->isf.err;
es->faultvaddr = saved_state->cr2;
-}
+}
static void
get_exception_state32(thread_t thread, x86_exception_state32_t *es)
{
- x86_saved_state32_t *saved_state;
+ x86_saved_state32_t *saved_state;
- saved_state = USER_REGS32(thread);
+ saved_state = USER_REGS32(thread);
es->trapno = saved_state->trapno;
es->cpu = saved_state->cpu;
es->err = saved_state->err;
es->faultvaddr = saved_state->cr2;
-}
+}
static int
set_thread_state32(thread_t thread, x86_thread_state32_t *ts)
{
- x86_saved_state32_t *saved_state;
+ x86_saved_state32_t *saved_state;
pal_register_cache_state(thread, DIRTY);
/* Set GS to CTHREAD only if's been established */
ts->gs = thread->machine.cthread_self ? USER_CTHREAD : NULL_SEG;
-
+
/* Check segment selectors are safe */
if (!valid_user_segment_selectors(ts->cs,
- ts->ss,
- ts->ds,
- ts->es,
- ts->fs,
- ts->gs))
- return(KERN_INVALID_ARGUMENT);
+ ts->ss,
+ ts->ds,
+ ts->es,
+ ts->fs,
+ ts->gs)) {
+ return KERN_INVALID_ARGUMENT;
+ }
saved_state->eax = ts->eax;
saved_state->ebx = ts->ebx;
* ensure that the user returns via iret
* - which is signaled thusly:
*/
- if ((saved_state->efl & EFL_TF) && saved_state->cs == SYSENTER_CS)
+ if ((saved_state->efl & EFL_TF) && saved_state->cs == SYSENTER_CS) {
saved_state->cs = SYSENTER_TF_CS;
+ }
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
static int
-set_thread_state64(thread_t thread, x86_thread_state64_t *ts)
+set_thread_state64(thread_t thread, void *state, int full)
{
- x86_saved_state64_t *saved_state;
+ x86_thread_state64_t *ts;
+ x86_saved_state64_t *saved_state;
+
+ if (full == TRUE) {
+ ts = &((x86_thread_full_state64_t *)state)->ss64;
+ if (!valid_user_code_selector(((x86_thread_full_state64_t *)ts)->ss64.cs)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+ } else {
+ ts = (x86_thread_state64_t *)state;
+ // In this case, ts->cs exists but is ignored, and
+ // CS is always set to USER_CS below instead.
+ }
pal_register_cache_state(thread, DIRTY);
saved_state = USER_REGS64(thread);
if (!IS_USERADDR64_CANONICAL(ts->rsp) ||
- !IS_USERADDR64_CANONICAL(ts->rip))
- return(KERN_INVALID_ARGUMENT);
+ !IS_USERADDR64_CANONICAL(ts->rip)) {
+ return KERN_INVALID_ARGUMENT;
+ }
saved_state->r8 = ts->r8;
saved_state->r9 = ts->r9;
saved_state->isf.rsp = ts->rsp;
saved_state->isf.rflags = (ts->rflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
saved_state->isf.rip = ts->rip;
- saved_state->isf.cs = USER64_CS;
+
+ if (full == FALSE) {
+ saved_state->isf.cs = USER64_CS;
+ } else {
+ saved_state->isf.cs = ((x86_thread_full_state64_t *)ts)->ss64.cs;
+ saved_state->isf.ss = ((x86_thread_full_state64_t *)ts)->ss;
+ saved_state->ds = (uint32_t)((x86_thread_full_state64_t *)ts)->ds;
+ saved_state->es = (uint32_t)((x86_thread_full_state64_t *)ts)->es;
+ machine_thread_set_tsd_base(thread,
+ ((x86_thread_full_state64_t *)ts)->gsbase);
+ }
+
saved_state->fs = (uint32_t)ts->fs;
saved_state->gs = (uint32_t)ts->gs;
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
static void
get_thread_state32(thread_t thread, x86_thread_state32_t *ts)
{
- x86_saved_state32_t *saved_state;
+ x86_saved_state32_t *saved_state;
pal_register_cache_state(thread, VALID);
static void
-get_thread_state64(thread_t thread, x86_thread_state64_t *ts)
+get_thread_state64(thread_t thread, void *state, boolean_t full)
{
- x86_saved_state64_t *saved_state;
+ x86_thread_state64_t *ts;
+ x86_saved_state64_t *saved_state;
+
+ if (full == TRUE) {
+ ts = &((x86_thread_full_state64_t *)state)->ss64;
+ } else {
+ ts = (x86_thread_state64_t *)state;
+ }
pal_register_cache_state(thread, VALID);
ts->rflags = saved_state->isf.rflags;
ts->rip = saved_state->isf.rip;
ts->cs = saved_state->isf.cs;
+
+ if (full == TRUE) {
+ ((x86_thread_full_state64_t *)state)->ds = saved_state->ds;
+ ((x86_thread_full_state64_t *)state)->es = saved_state->es;
+ ((x86_thread_full_state64_t *)state)->ss = saved_state->isf.ss;
+ ((x86_thread_full_state64_t *)state)->gsbase =
+ thread->machine.cthread_self;
+ }
+
ts->fs = saved_state->fs;
ts->gs = saved_state->gs;
}
kern_return_t
machine_thread_state_convert_to_user(
- __unused thread_t thread,
- __unused thread_flavor_t flavor,
- __unused thread_state_t tstate,
- __unused mach_msg_type_number_t *count)
+ __unused thread_t thread,
+ __unused thread_flavor_t flavor,
+ __unused thread_state_t tstate,
+ __unused mach_msg_type_number_t *count)
{
// No conversion to userspace representation on this platform
return KERN_SUCCESS;
kern_return_t
machine_thread_state_convert_from_user(
- __unused thread_t thread,
- __unused thread_flavor_t flavor,
- __unused thread_state_t tstate,
- __unused mach_msg_type_number_t count)
+ __unused thread_t thread,
+ __unused thread_flavor_t flavor,
+ __unused thread_state_t tstate,
+ __unused mach_msg_type_number_t count)
{
// No conversion from userspace representation on this platform
return KERN_SUCCESS;
kern_return_t
machine_thread_siguctx_pointer_convert_to_user(
- __unused thread_t thread,
- __unused user_addr_t *uctxp)
+ __unused thread_t thread,
+ __unused user_addr_t *uctxp)
{
// No conversion to userspace representation on this platform
return KERN_SUCCESS;
kern_return_t
machine_thread_function_pointers_convert_from_user(
- __unused thread_t thread,
- __unused user_addr_t *fptrs,
- __unused uint32_t count)
+ __unused thread_t thread,
+ __unused user_addr_t *fptrs,
+ __unused uint32_t count)
{
// No conversion from userspace representation on this platform
return KERN_SUCCESS;
switch (flavor) {
case x86_SAVED_STATE32:
{
- x86_saved_state32_t *state;
- x86_saved_state32_t *saved_state;
+ x86_saved_state32_t *state;
+ x86_saved_state32_t *saved_state;
- if (count < x86_SAVED_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (count < x86_SAVED_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_saved_state32_t *) tstate;
+ /*
+ * Refuse to allow 64-bit processes to set
+ * 32-bit state.
+ */
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
/* Check segment selectors are safe */
if (!valid_user_segment_selectors(state->cs,
- state->ss,
- state->ds,
- state->es,
- state->fs,
- state->gs))
+ state->ss,
+ state->ds,
+ state->es,
+ state->fs,
+ state->gs)) {
return KERN_INVALID_ARGUMENT;
+ }
pal_register_cache_state(thr_act, DIRTY);
* ensure that the user returns via iret
* - which is signaled thusly:
*/
- if ((saved_state->efl & EFL_TF) && state->cs == SYSENTER_CS)
+ if ((saved_state->efl & EFL_TF) && state->cs == SYSENTER_CS) {
state->cs = SYSENTER_TF_CS;
+ }
/*
* User setting segment registers.
case x86_SAVED_STATE64:
{
- x86_saved_state64_t *state;
- x86_saved_state64_t *saved_state;
+ x86_saved_state64_t *state;
+ x86_saved_state64_t *saved_state;
- if (count < x86_SAVED_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (count < x86_SAVED_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (!thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_saved_state64_t *) tstate;
* restore the segment registers--hence they are no
* longer relevant for validation.
*/
- if (!valid_user_code_selector(state->isf.cs))
- return KERN_INVALID_ARGUMENT;
-
+ if (!valid_user_code_selector(state->isf.cs)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
/* Check pc and stack are canonical addresses */
if (!IS_USERADDR64_CANONICAL(state->isf.rsp) ||
- !IS_USERADDR64_CANONICAL(state->isf.rip))
+ !IS_USERADDR64_CANONICAL(state->isf.rip)) {
return KERN_INVALID_ARGUMENT;
+ }
pal_register_cache_state(thr_act, DIRTY);
case x86_FLOAT_STATE32:
case x86_AVX_STATE32:
-#if !defined(RC_HIDE_XNU_J137)
case x86_AVX512_STATE32:
-#endif /* not RC_HIDE_XNU_J137 */
{
- if (count != _MachineStateCount[flavor])
- return(KERN_INVALID_ARGUMENT);
+ if (count != _MachineStateCount[flavor]) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
return fpu_set_fxstate(thr_act, tstate, flavor);
}
case x86_FLOAT_STATE64:
case x86_AVX_STATE64:
-#if !defined(RC_HIDE_XNU_J137)
case x86_AVX512_STATE64:
-#endif /* not RC_HIDE_XNU_J137 */
{
- if (count != _MachineStateCount[flavor])
- return(KERN_INVALID_ARGUMENT);
+ if (count != _MachineStateCount[flavor]) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (!thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
return fpu_set_fxstate(thr_act, tstate, flavor);
}
case x86_FLOAT_STATE:
- {
+ {
x86_float_state_t *state;
- if (count != x86_FLOAT_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (count != x86_FLOAT_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_float_state_t *)tstate;
if (state->fsh.flavor == x86_FLOAT_STATE64 && state->fsh.count == x86_FLOAT_STATE64_COUNT &&
}
if (state->fsh.flavor == x86_FLOAT_STATE32 && state->fsh.count == x86_FLOAT_STATE32_COUNT &&
!thread_is_64bit_addr(thr_act)) {
- return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs32, x86_FLOAT_STATE32);
+ return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs32, x86_FLOAT_STATE32);
}
- return(KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
case x86_AVX_STATE:
-#if !defined(RC_HIDE_XNU_J137)
case x86_AVX512_STATE:
-#endif
- {
+ {
x86_avx_state_t *state;
- if (count != _MachineStateCount[flavor])
- return(KERN_INVALID_ARGUMENT);
+ if (count != _MachineStateCount[flavor]) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_avx_state_t *)tstate;
/* Flavors are defined to have sequential values: 32-bit, 64-bit, non-specific */
/* 64-bit flavor? */
if (state->ash.flavor == (flavor - 1) &&
- state->ash.count == _MachineStateCount[flavor - 1] &&
+ state->ash.count == _MachineStateCount[flavor - 1] &&
thread_is_64bit_addr(thr_act)) {
return fpu_set_fxstate(thr_act,
- (thread_state_t)&state->ufs.as64,
- flavor - 1);
+ (thread_state_t)&state->ufs.as64,
+ flavor - 1);
}
/* 32-bit flavor? */
if (state->ash.flavor == (flavor - 2) &&
- state->ash.count == _MachineStateCount[flavor - 2] &&
+ state->ash.count == _MachineStateCount[flavor - 2] &&
!thread_is_64bit_addr(thr_act)) {
return fpu_set_fxstate(thr_act,
- (thread_state_t)&state->ufs.as32,
- flavor - 2);
+ (thread_state_t)&state->ufs.as32,
+ flavor - 2);
}
- return(KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
- case x86_THREAD_STATE32:
+ case x86_THREAD_STATE32:
{
- if (count != x86_THREAD_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (count != x86_THREAD_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
return set_thread_state32(thr_act, (x86_thread_state32_t *)tstate);
}
- case x86_THREAD_STATE64:
+ case x86_THREAD_STATE64:
{
- if (count != x86_THREAD_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (count != x86_THREAD_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (!thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
- return set_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
+ return set_thread_state64(thr_act, tstate, FALSE);
+ }
+ case x86_THREAD_FULL_STATE64:
+ {
+ if (count != x86_THREAD_FULL_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ /* If this process does not have a custom LDT, return failure */
+ if (thr_act->task->i386_ldt == 0) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ return set_thread_state64(thr_act, tstate, TRUE);
}
+
case x86_THREAD_STATE:
{
x86_thread_state_t *state;
- if (count != x86_THREAD_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (count != x86_THREAD_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_thread_state_t *)tstate;
if (state->tsh.flavor == x86_THREAD_STATE64 &&
state->tsh.count == x86_THREAD_STATE64_COUNT &&
thread_is_64bit_addr(thr_act)) {
- return set_thread_state64(thr_act, &state->uts.ts64);
+ return set_thread_state64(thr_act, &state->uts.ts64, FALSE);
+ } else if (state->tsh.flavor == x86_THREAD_FULL_STATE64 &&
+ state->tsh.count == x86_THREAD_FULL_STATE64_COUNT &&
+ thread_is_64bit_addr(thr_act) && thr_act->task->i386_ldt != 0) {
+ return set_thread_state64(thr_act, &state->uts.ts64, TRUE);
} else if (state->tsh.flavor == x86_THREAD_STATE32 &&
- state->tsh.count == x86_THREAD_STATE32_COUNT &&
- !thread_is_64bit_addr(thr_act)) {
+ state->tsh.count == x86_THREAD_STATE32_COUNT &&
+ !thread_is_64bit_addr(thr_act)) {
return set_thread_state32(thr_act, &state->uts.ts32);
- } else
- return(KERN_INVALID_ARGUMENT);
+ } else {
+ return KERN_INVALID_ARGUMENT;
+ }
}
case x86_DEBUG_STATE32:
{
x86_debug_state32_t *state;
kern_return_t ret;
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_debug_state32_t *)tstate;
x86_debug_state64_t *state;
kern_return_t ret;
- if (!thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_debug_state64_t *)tstate;
x86_debug_state_t *state;
kern_return_t ret = KERN_INVALID_ARGUMENT;
- if (count != x86_DEBUG_STATE_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (count != x86_DEBUG_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_debug_state_t *)tstate;
if (state->dsh.flavor == x86_DEBUG_STATE64 &&
- state->dsh.count == x86_DEBUG_STATE64_COUNT &&
- thread_is_64bit_addr(thr_act)) {
+ state->dsh.count == x86_DEBUG_STATE64_COUNT &&
+ thread_is_64bit_addr(thr_act)) {
ret = set_debug_state64(thr_act, &state->uds.ds64);
- }
- else
- if (state->dsh.flavor == x86_DEBUG_STATE32 &&
- state->dsh.count == x86_DEBUG_STATE32_COUNT &&
- !thread_is_64bit_addr(thr_act)) {
- ret = set_debug_state32(thr_act, &state->uds.ds32);
+ } else if (state->dsh.flavor == x86_DEBUG_STATE32 &&
+ state->dsh.count == x86_DEBUG_STATE32_COUNT &&
+ !thread_is_64bit_addr(thr_act)) {
+ ret = set_debug_state32(thr_act, &state->uds.ds32);
}
return ret;
}
default:
- return(KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
+mach_vm_address_t
+machine_thread_pc(thread_t thr_act)
+{
+ if (thread_is_64bit_addr(thr_act)) {
+ return (mach_vm_address_t)USER_REGS64(thr_act)->isf.rip;
+ } else {
+ return (mach_vm_address_t)USER_REGS32(thr_act)->eip;
+ }
+}
+
+void
+machine_thread_reset_pc(thread_t thr_act, mach_vm_address_t pc)
+{
+ pal_register_cache_state(thr_act, DIRTY);
+
+ if (thread_is_64bit_addr(thr_act)) {
+ if (!IS_USERADDR64_CANONICAL(pc)) {
+ pc = 0;
+ }
+ USER_REGS64(thr_act)->isf.rip = (uint64_t)pc;
+ } else {
+ USER_REGS32(thr_act)->eip = (uint32_t)pc;
+ }
+}
/*
thread_state_t tstate,
mach_msg_type_number_t *count)
{
+ switch (flavor) {
+ case THREAD_STATE_FLAVOR_LIST:
+ {
+ if (*count < 3) {
+ return KERN_INVALID_ARGUMENT;
+ }
- switch (flavor) {
-
- case THREAD_STATE_FLAVOR_LIST:
- {
- if (*count < 3)
- return (KERN_INVALID_ARGUMENT);
-
- tstate[0] = i386_THREAD_STATE;
+ tstate[0] = i386_THREAD_STATE;
tstate[1] = i386_FLOAT_STATE;
tstate[2] = i386_EXCEPTION_STATE;
*count = 3;
break;
- }
+ }
- case THREAD_STATE_FLAVOR_LIST_NEW:
- {
- if (*count < 4)
- return (KERN_INVALID_ARGUMENT);
+ case THREAD_STATE_FLAVOR_LIST_NEW:
+ {
+ if (*count < 4) {
+ return KERN_INVALID_ARGUMENT;
+ }
- tstate[0] = x86_THREAD_STATE;
+ tstate[0] = x86_THREAD_STATE;
tstate[1] = x86_FLOAT_STATE;
tstate[2] = x86_EXCEPTION_STATE;
tstate[3] = x86_DEBUG_STATE;
*count = 4;
break;
- }
+ }
- case THREAD_STATE_FLAVOR_LIST_10_9:
- {
- if (*count < 5)
- return (KERN_INVALID_ARGUMENT);
+ case THREAD_STATE_FLAVOR_LIST_10_9:
+ {
+ if (*count < 5) {
+ return KERN_INVALID_ARGUMENT;
+ }
- tstate[0] = x86_THREAD_STATE;
+ tstate[0] = x86_THREAD_STATE;
tstate[1] = x86_FLOAT_STATE;
tstate[2] = x86_EXCEPTION_STATE;
tstate[3] = x86_DEBUG_STATE;
*count = 5;
break;
- }
+ }
-#if !defined(RC_HIDE_XNU_J137)
- case THREAD_STATE_FLAVOR_LIST_10_13:
- {
- if (*count < 6)
- return (KERN_INVALID_ARGUMENT);
+ case THREAD_STATE_FLAVOR_LIST_10_13:
+ {
+ if (*count < 6) {
+ return KERN_INVALID_ARGUMENT;
+ }
- tstate[0] = x86_THREAD_STATE;
+ tstate[0] = x86_THREAD_STATE;
tstate[1] = x86_FLOAT_STATE;
tstate[2] = x86_EXCEPTION_STATE;
tstate[3] = x86_DEBUG_STATE;
*count = 6;
break;
- }
+ }
-#endif
- case x86_SAVED_STATE32:
- {
- x86_saved_state32_t *state;
- x86_saved_state32_t *saved_state;
+ case THREAD_STATE_FLAVOR_LIST_10_15:
+ {
+ if (*count < 7) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ tstate[0] = x86_THREAD_STATE;
+ tstate[1] = x86_FLOAT_STATE;
+ tstate[2] = x86_EXCEPTION_STATE;
+ tstate[3] = x86_DEBUG_STATE;
+ tstate[4] = x86_AVX_STATE;
+ tstate[5] = x86_AVX512_STATE;
+ tstate[6] = x86_PAGEIN_STATE;
- if (*count < x86_SAVED_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ *count = 7;
+ break;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ case x86_SAVED_STATE32:
+ {
+ x86_saved_state32_t *state;
+ x86_saved_state32_t *saved_state;
+
+ if (*count < x86_SAVED_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_saved_state32_t *) tstate;
saved_state = USER_REGS32(thr_act);
*count = x86_SAVED_STATE32_COUNT;
break;
- }
+ }
- case x86_SAVED_STATE64:
- {
- x86_saved_state64_t *state;
- x86_saved_state64_t *saved_state;
+ case x86_SAVED_STATE64:
+ {
+ x86_saved_state64_t *state;
+ x86_saved_state64_t *saved_state;
- if (*count < x86_SAVED_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_SAVED_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (!thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_saved_state64_t *)tstate;
saved_state = USER_REGS64(thr_act);
* First, copy everything:
*/
*state = *saved_state;
+ state->ds = saved_state->ds & 0xffff;
+ state->es = saved_state->es & 0xffff;
state->fs = saved_state->fs & 0xffff;
state->gs = saved_state->gs & 0xffff;
*count = x86_SAVED_STATE64_COUNT;
break;
- }
+ }
- case x86_FLOAT_STATE32:
- {
- if (*count < x86_FLOAT_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case x86_FLOAT_STATE32:
+ {
+ if (*count < x86_FLOAT_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = x86_FLOAT_STATE32_COUNT;
return fpu_get_fxstate(thr_act, tstate, flavor);
- }
+ }
- case x86_FLOAT_STATE64:
- {
- if (*count < x86_FLOAT_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case x86_FLOAT_STATE64:
+ {
+ if (*count < x86_FLOAT_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if ( !thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = x86_FLOAT_STATE64_COUNT;
return fpu_get_fxstate(thr_act, tstate, flavor);
- }
+ }
- case x86_FLOAT_STATE:
- {
- x86_float_state_t *state;
- kern_return_t kret;
+ case x86_FLOAT_STATE:
+ {
+ x86_float_state_t *state;
+ kern_return_t kret;
- if (*count < x86_FLOAT_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_FLOAT_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_float_state_t *)tstate;
/*
- * no need to bzero... currently
+ * no need to bzero... currently
* x86_FLOAT_STATE64_COUNT == x86_FLOAT_STATE32_COUNT
*/
if (thread_is_64bit_addr(thr_act)) {
- state->fsh.flavor = x86_FLOAT_STATE64;
- state->fsh.count = x86_FLOAT_STATE64_COUNT;
+ state->fsh.flavor = x86_FLOAT_STATE64;
+ state->fsh.count = x86_FLOAT_STATE64_COUNT;
kret = fpu_get_fxstate(thr_act, (thread_state_t)&state->ufs.fs64, x86_FLOAT_STATE64);
} else {
- state->fsh.flavor = x86_FLOAT_STATE32;
+ state->fsh.flavor = x86_FLOAT_STATE32;
state->fsh.count = x86_FLOAT_STATE32_COUNT;
kret = fpu_get_fxstate(thr_act, (thread_state_t)&state->ufs.fs32, x86_FLOAT_STATE32);
}
*count = x86_FLOAT_STATE_COUNT;
- return(kret);
- }
+ return kret;
+ }
- case x86_AVX_STATE32:
-#if !defined(RC_HIDE_XNU_J137)
- case x86_AVX512_STATE32:
-#endif
- {
- if (*count != _MachineStateCount[flavor])
- return(KERN_INVALID_ARGUMENT);
+ case x86_AVX_STATE32:
+ case x86_AVX512_STATE32:
+ {
+ if (*count != _MachineStateCount[flavor]) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = _MachineStateCount[flavor];
return fpu_get_fxstate(thr_act, tstate, flavor);
- }
+ }
- case x86_AVX_STATE64:
-#if !defined(RC_HIDE_XNU_J137)
- case x86_AVX512_STATE64:
-#endif
- {
- if (*count != _MachineStateCount[flavor])
- return(KERN_INVALID_ARGUMENT);
+ case x86_AVX_STATE64:
+ case x86_AVX512_STATE64:
+ {
+ if (*count != _MachineStateCount[flavor]) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if ( !thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = _MachineStateCount[flavor];
return fpu_get_fxstate(thr_act, tstate, flavor);
- }
+ }
- case x86_AVX_STATE:
-#if !defined(RC_HIDE_XNU_J137)
- case x86_AVX512_STATE:
-#endif
- {
- x86_avx_state_t *state;
- thread_state_t fstate;
+ case x86_AVX_STATE:
+ case x86_AVX512_STATE:
+ {
+ x86_avx_state_t *state;
+ thread_state_t fstate;
- if (*count < _MachineStateCount[flavor])
- return(KERN_INVALID_ARGUMENT);
+ if (*count < _MachineStateCount[flavor]) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = _MachineStateCount[flavor];
state = (x86_avx_state_t *)tstate;
bzero((char *)state, *count * sizeof(int));
if (thread_is_64bit_addr(thr_act)) {
- flavor -= 1; /* 64-bit flavor */
+ flavor -= 1; /* 64-bit flavor */
fstate = (thread_state_t) &state->ufs.as64;
} else {
- flavor -= 2; /* 32-bit flavor */
+ flavor -= 2; /* 32-bit flavor */
fstate = (thread_state_t) &state->ufs.as32;
}
- state->ash.flavor = flavor;
+ state->ash.flavor = flavor;
state->ash.count = _MachineStateCount[flavor];
return fpu_get_fxstate(thr_act, fstate, flavor);
- }
+ }
- case x86_THREAD_STATE32:
- {
- if (*count < x86_THREAD_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case x86_THREAD_STATE32:
+ {
+ if (*count < x86_THREAD_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = x86_THREAD_STATE32_COUNT;
get_thread_state32(thr_act, (x86_thread_state32_t *)tstate);
break;
- }
+ }
- case x86_THREAD_STATE64:
- {
- if (*count < x86_THREAD_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case x86_THREAD_STATE64:
+ {
+ if (*count < x86_THREAD_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if ( !thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = x86_THREAD_STATE64_COUNT;
- get_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
+ get_thread_state64(thr_act, tstate, FALSE);
break;
- }
+ }
- case x86_THREAD_STATE:
- {
- x86_thread_state_t *state;
+ case x86_THREAD_FULL_STATE64:
+ {
+ if (*count < x86_THREAD_FULL_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (*count < x86_THREAD_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ /* If this process does not have a custom LDT, return failure */
+ if (thr_act->task->i386_ldt == 0) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ *count = x86_THREAD_FULL_STATE64_COUNT;
+
+ get_thread_state64(thr_act, tstate, TRUE);
+ break;
+ }
+
+ case x86_THREAD_STATE:
+ {
+ x86_thread_state_t *state;
+
+ if (*count < x86_THREAD_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_thread_state_t *)tstate;
state->tsh.flavor = x86_THREAD_STATE64;
state->tsh.count = x86_THREAD_STATE64_COUNT;
- get_thread_state64(thr_act, &state->uts.ts64);
+ get_thread_state64(thr_act, &state->uts.ts64, FALSE);
} else {
state->tsh.flavor = x86_THREAD_STATE32;
state->tsh.count = x86_THREAD_STATE32_COUNT;
- get_thread_state32(thr_act, &state->uts.ts32);
+ get_thread_state32(thr_act, &state->uts.ts32);
}
*count = x86_THREAD_STATE_COUNT;
break;
- }
+ }
- case x86_EXCEPTION_STATE32:
- {
- if (*count < x86_EXCEPTION_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case x86_EXCEPTION_STATE32:
+ {
+ if (*count < x86_EXCEPTION_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = x86_EXCEPTION_STATE32_COUNT;
*/
((x86_exception_state32_t *)tstate)->cpu = 0;
break;
- }
+ }
- case x86_EXCEPTION_STATE64:
- {
- if (*count < x86_EXCEPTION_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ case x86_EXCEPTION_STATE64:
+ {
+ if (*count < x86_EXCEPTION_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if ( !thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
*count = x86_EXCEPTION_STATE64_COUNT;
*/
((x86_exception_state64_t *)tstate)->cpu = 0;
break;
- }
+ }
- case x86_EXCEPTION_STATE:
- {
- x86_exception_state_t *state;
+ case x86_EXCEPTION_STATE:
+ {
+ x86_exception_state_t *state;
- if (*count < x86_EXCEPTION_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_EXCEPTION_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_exception_state_t *)tstate;
state->esh.flavor = x86_EXCEPTION_STATE64;
state->esh.count = x86_EXCEPTION_STATE64_COUNT;
- get_exception_state64(thr_act, &state->ues.es64);
+ get_exception_state64(thr_act, &state->ues.es64);
} else {
state->esh.flavor = x86_EXCEPTION_STATE32;
state->esh.count = x86_EXCEPTION_STATE32_COUNT;
- get_exception_state32(thr_act, &state->ues.es32);
+ get_exception_state32(thr_act, &state->ues.es32);
}
*count = x86_EXCEPTION_STATE_COUNT;
}
case x86_DEBUG_STATE32:
{
- if (*count < x86_DEBUG_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_DEBUG_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
get_debug_state32(thr_act, (x86_debug_state32_t *)tstate);
}
case x86_DEBUG_STATE64:
{
- if (*count < x86_DEBUG_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (!thread_is_64bit_addr(thr_act))
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_DEBUG_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
get_debug_state64(thr_act, (x86_debug_state64_t *)tstate);
{
x86_debug_state_t *state;
- if (*count < x86_DEBUG_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_DEBUG_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_debug_state_t *)tstate;
*count = x86_DEBUG_STATE_COUNT;
break;
}
+
+ case x86_PAGEIN_STATE:
+ {
+ if (*count < x86_PAGEIN_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ x86_pagein_state_t *state = (void *)tstate;
+
+ state->__pagein_error = thr_act->t_pagein_error;
+
+ *count = x86_PAGEIN_STATE_COUNT;
+ break;
+ }
+
+ case x86_INSTRUCTION_STATE:
+ {
+ if (*count < x86_INSTRUCTION_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ x86_instruction_state_t *state = (void *)tstate;
+ x86_instruction_state_t *src_state = THREAD_TO_PCB(thr_act)->insn_state;
+
+ if (src_state != 0 && (src_state->insn_stream_valid_bytes > 0 || src_state->out_of_synch)) {
+#if DEVELOPMENT || DEBUG
+ extern int insnstream_force_cacheline_mismatch;
+#endif
+ size_t byte_count = (src_state->insn_stream_valid_bytes > x86_INSTRUCTION_STATE_MAX_INSN_BYTES)
+ ? x86_INSTRUCTION_STATE_MAX_INSN_BYTES : src_state->insn_stream_valid_bytes;
+ if (byte_count > 0) {
+ bcopy(src_state->insn_bytes, state->insn_bytes, byte_count);
+ }
+ state->insn_offset = src_state->insn_offset;
+ state->insn_stream_valid_bytes = byte_count;
+#if DEVELOPMENT || DEBUG
+ state->out_of_synch = src_state->out_of_synch || insnstream_force_cacheline_mismatch;
+ insnstream_force_cacheline_mismatch = 0; /* One-shot, reset after use */
+
+ if (state->out_of_synch) {
+ bcopy(&src_state->insn_cacheline[0], &state->insn_cacheline[0],
+ x86_INSTRUCTION_STATE_CACHELINE_SIZE);
+ } else {
+ bzero(&state->insn_cacheline[0], x86_INSTRUCTION_STATE_CACHELINE_SIZE);
+ }
+#else
+ state->out_of_synch = src_state->out_of_synch;
+#endif
+ *count = x86_INSTRUCTION_STATE_COUNT;
+ } else {
+ *count = 0;
+ }
+ break;
+ }
+
+ case x86_LAST_BRANCH_STATE:
+ {
+ boolean_t istate;
+
+ if (!last_branch_support_enabled || *count < x86_LAST_BRANCH_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ istate = ml_set_interrupts_enabled(FALSE);
+ /* If the current thread is asking for its own LBR data, synch the LBRs first */
+ if (thr_act == current_thread()) {
+ i386_lbr_synch(thr_act);
+ }
+ ml_set_interrupts_enabled(istate);
+
+ if (i386_lbr_native_state_to_mach_thread_state(THREAD_TO_PCB(thr_act), (last_branch_state_t *)tstate) < 0) {
+ *count = 0;
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ *count = x86_LAST_BRANCH_STATE_COUNT;
+ break;
+ }
+
default:
- return(KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
kern_return_t
machine_thread_get_kern_state(
- thread_t thread,
- thread_flavor_t flavor,
- thread_state_t tstate,
- mach_msg_type_number_t *count)
+ thread_t thread,
+ thread_flavor_t flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t *count)
{
- x86_saved_state_t *int_state = current_cpu_datap()->cpu_int_state;
+ x86_saved_state_t *int_state = current_cpu_datap()->cpu_int_state;
/*
* This works only for an interrupted kernel thread
*/
- if (thread != current_thread() || int_state == NULL)
+ if (thread != current_thread() || int_state == NULL) {
return KERN_FAILURE;
+ }
switch (flavor) {
- case x86_THREAD_STATE32: {
+ case x86_THREAD_STATE32: {
x86_thread_state32_t *state;
x86_saved_state32_t *saved_state;
if (!is_saved_state32(int_state) ||
- *count < x86_THREAD_STATE32_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ *count < x86_THREAD_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_thread_state32_t *) tstate;
*count = x86_THREAD_STATE32_COUNT;
return KERN_SUCCESS;
- }
-
- case x86_THREAD_STATE64: {
- x86_thread_state64_t *state;
- x86_saved_state64_t *saved_state;
+ }
+
+ case x86_THREAD_STATE64: {
+ x86_thread_state64_t *state;
+ x86_saved_state64_t *saved_state;
if (!is_saved_state64(int_state) ||
- *count < x86_THREAD_STATE64_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ *count < x86_THREAD_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_thread_state64_t *) tstate;
*count = x86_THREAD_STATE64_COUNT;
return KERN_SUCCESS;
- }
-
- case x86_THREAD_STATE: {
+ }
+
+ case x86_THREAD_STATE: {
x86_thread_state_t *state = NULL;
- if (*count < x86_THREAD_STATE_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ if (*count < x86_THREAD_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
state = (x86_thread_state_t *) tstate;
*count = x86_THREAD_STATE_COUNT;
return KERN_SUCCESS;
- }
+ }
}
return KERN_FAILURE;
}
void
machine_thread_init(void)
{
- iss_zone = zinit(sizeof(x86_saved_state_t),
- thread_max * sizeof(x86_saved_state_t),
- THREAD_CHUNK * sizeof(x86_saved_state_t),
- "x86_64 saved state");
-
- ids_zone = zinit(sizeof(x86_debug_state64_t),
- thread_max * sizeof(x86_debug_state64_t),
- THREAD_CHUNK * sizeof(x86_debug_state64_t),
- "x86_64 debug state");
-
fpu_module_init();
}
+/*
+ * machine_thread_template_init: Initialize machine-specific portion of
+ * the thread template.
+ */
+void
+machine_thread_template_init(thread_t thr_template)
+{
+ assert(fpu_default != UNDEFINED);
+ THREAD_TO_PCB(thr_template)->xstate = fpu_default;
+}
user_addr_t
get_useraddr(void)
{
- thread_t thr_act = current_thread();
-
- if (thread_is_64bit_addr(thr_act)) {
- x86_saved_state64_t *iss64;
-
+ thread_t thr_act = current_thread();
+
+ if (thread_is_64bit_addr(thr_act)) {
+ x86_saved_state64_t *iss64;
+
iss64 = USER_REGS64(thr_act);
- return(iss64->isf.rip);
+ return iss64->isf.rip;
} else {
- x86_saved_state32_t *iss32;
+ x86_saved_state32_t *iss32;
iss32 = USER_REGS32(thr_act);
- return(iss32->eip);
+ return iss32->eip;
}
}
vm_offset_t stack;
KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_DETACH),
- (uintptr_t)thread_tid(thread), thread->priority,
- thread->sched_pri, 0,
- 0);
+ (uintptr_t)thread_tid(thread), thread->priority,
+ thread->sched_pri, 0,
+ 0);
stack = thread->kernel_stack;
thread->kernel_stack = 0;
- return (stack);
+ return stack;
}
/*
void
machine_stack_attach(
- thread_t thread,
- vm_offset_t stack)
+ thread_t thread,
+ vm_offset_t stack)
{
struct x86_kernel_state *statep;
KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_ATTACH),
- (uintptr_t)thread_tid(thread), thread->priority,
- thread->sched_pri, 0, 0);
+ (uintptr_t)thread_tid(thread), thread->priority,
+ thread->sched_pri, 0, 0);
assert(stack);
thread->kernel_stack = stack;
thread_initialize_kernel_state(thread);
statep = STACK_IKS(stack);
-#if defined(__x86_64__)
- statep->k_rip = (unsigned long) Thread_continue;
- statep->k_rbx = (unsigned long) thread_continue;
- statep->k_rsp = (unsigned long) STACK_IKS(stack);
-#else
- statep->k_eip = (unsigned long) Thread_continue;
- statep->k_ebx = (unsigned long) thread_continue;
- statep->k_esp = (unsigned long) STACK_IKS(stack);
-#endif
+
+ /*
+ * Reset the state of the thread to resume from a continuation,
+ * including resetting the stack and frame pointer to avoid backtracers
+ * seeing this temporary state and attempting to walk the defunct stack.
+ */
+ statep->k_rbp = (uint64_t) 0;
+ statep->k_rip = (uint64_t) Thread_continue;
+ statep->k_rbx = (uint64_t) thread_continue;
+ statep->k_rsp = (uint64_t) STACK_IKS(stack);
return;
}
void
machine_stack_handoff(thread_t old,
- thread_t new)
+ thread_t new)
{
vm_offset_t stack;
new->kernel_stack = stack;
fpu_switch_context(old, new);
-
+
old->machine.specFlags &= ~OnProc;
new->machine.specFlags |= OnProc;
ic64 = (struct x86_act_context64 *)kalloc(sizeof(struct x86_act_context64));
- if (ic64 == (struct x86_act_context64 *)NULL)
- return((void *)0);
+ if (ic64 == (struct x86_act_context64 *)NULL) {
+ return (void *)0;
+ }
- val = x86_SAVED_STATE64_COUNT;
+ val = x86_SAVED_STATE64_COUNT;
kret = machine_thread_get_state(thr_act, x86_SAVED_STATE64,
- (thread_state_t) &ic64->ss, &val);
+ (thread_state_t) &ic64->ss, &val);
if (kret != KERN_SUCCESS) {
kfree(ic64, sizeof(struct x86_act_context64));
- return((void *)0);
+ return (void *)0;
}
- val = x86_FLOAT_STATE64_COUNT;
+ val = x86_FLOAT_STATE64_COUNT;
kret = machine_thread_get_state(thr_act, x86_FLOAT_STATE64,
- (thread_state_t) &ic64->fs, &val);
+ (thread_state_t) &ic64->fs, &val);
if (kret != KERN_SUCCESS) {
kfree(ic64, sizeof(struct x86_act_context64));
- return((void *)0);
+ return (void *)0;
}
val = x86_DEBUG_STATE64_COUNT;
kret = machine_thread_get_state(thr_act,
- x86_DEBUG_STATE64,
- (thread_state_t)&ic64->ds,
- &val);
+ x86_DEBUG_STATE64,
+ (thread_state_t)&ic64->ds,
+ &val);
if (kret != KERN_SUCCESS) {
- kfree(ic64, sizeof(struct x86_act_context64));
- return((void *)0);
+ kfree(ic64, sizeof(struct x86_act_context64));
+ return (void *)0;
}
- return(ic64);
-
+ return ic64;
} else {
struct x86_act_context32 *ic32;
ic32 = (struct x86_act_context32 *)kalloc(sizeof(struct x86_act_context32));
- if (ic32 == (struct x86_act_context32 *)NULL)
- return((void *)0);
+ if (ic32 == (struct x86_act_context32 *)NULL) {
+ return (void *)0;
+ }
- val = x86_SAVED_STATE32_COUNT;
+ val = x86_SAVED_STATE32_COUNT;
kret = machine_thread_get_state(thr_act, x86_SAVED_STATE32,
- (thread_state_t) &ic32->ss, &val);
+ (thread_state_t) &ic32->ss, &val);
if (kret != KERN_SUCCESS) {
kfree(ic32, sizeof(struct x86_act_context32));
- return((void *)0);
+ return (void *)0;
}
- val = x86_FLOAT_STATE32_COUNT;
+ val = x86_FLOAT_STATE32_COUNT;
kret = machine_thread_get_state(thr_act, x86_FLOAT_STATE32,
- (thread_state_t) &ic32->fs, &val);
+ (thread_state_t) &ic32->fs, &val);
if (kret != KERN_SUCCESS) {
kfree(ic32, sizeof(struct x86_act_context32));
- return((void *)0);
+ return (void *)0;
}
val = x86_DEBUG_STATE32_COUNT;
kret = machine_thread_get_state(thr_act,
- x86_DEBUG_STATE32,
- (thread_state_t)&ic32->ds,
- &val);
+ x86_DEBUG_STATE32,
+ (thread_state_t)&ic32->ds,
+ &val);
if (kret != KERN_SUCCESS) {
- kfree(ic32, sizeof(struct x86_act_context32));
- return((void *)0);
+ kfree(ic32, sizeof(struct x86_act_context32));
+ return (void *)0;
}
- return(ic32);
+ return ic32;
}
}
-void
+void
act_thread_catt(void *ctx)
{
- thread_t thr_act = current_thread();
+ thread_t thr_act = current_thread();
kern_return_t kret;
- if (ctx == (void *)NULL)
- return;
+ if (ctx == (void *)NULL) {
+ return;
+ }
- if (thread_is_64bit_addr(thr_act)) {
- struct x86_act_context64 *ic64;
+ if (thread_is_64bit_addr(thr_act)) {
+ struct x86_act_context64 *ic64;
- ic64 = (struct x86_act_context64 *)ctx;
+ ic64 = (struct x86_act_context64 *)ctx;
kret = machine_thread_set_state(thr_act, x86_SAVED_STATE64,
- (thread_state_t) &ic64->ss, x86_SAVED_STATE64_COUNT);
+ (thread_state_t) &ic64->ss, x86_SAVED_STATE64_COUNT);
if (kret == KERN_SUCCESS) {
- machine_thread_set_state(thr_act, x86_FLOAT_STATE64,
- (thread_state_t) &ic64->fs, x86_FLOAT_STATE64_COUNT);
+ machine_thread_set_state(thr_act, x86_FLOAT_STATE64,
+ (thread_state_t) &ic64->fs, x86_FLOAT_STATE64_COUNT);
}
kfree(ic64, sizeof(struct x86_act_context64));
} else {
- struct x86_act_context32 *ic32;
+ struct x86_act_context32 *ic32;
- ic32 = (struct x86_act_context32 *)ctx;
+ ic32 = (struct x86_act_context32 *)ctx;
kret = machine_thread_set_state(thr_act, x86_SAVED_STATE32,
- (thread_state_t) &ic32->ss, x86_SAVED_STATE32_COUNT);
+ (thread_state_t) &ic32->ss, x86_SAVED_STATE32_COUNT);
if (kret == KERN_SUCCESS) {
(void) machine_thread_set_state(thr_act, x86_FLOAT_STATE32,
- (thread_state_t) &ic32->fs, x86_FLOAT_STATE32_COUNT);
+ (thread_state_t) &ic32->fs, x86_FLOAT_STATE32_COUNT);
}
kfree(ic32, sizeof(struct x86_act_context32));
}
}
-void act_thread_cfree(__unused void *ctx)
+void
+act_thread_cfree(__unused void *ctx)
{
/* XXX - Unused */
}
/*
* Duplicate one x86_debug_state32_t to another. "all" parameter
* chooses whether dr4 and dr5 are copied (they are never meant
- * to be installed when we do machine_task_set_state() or
+ * to be installed when we do machine_task_set_state() or
* machine_thread_set_state()).
*/
void
copy_debug_state32(
- x86_debug_state32_t *src,
- x86_debug_state32_t *target,
- boolean_t all)
+ x86_debug_state32_t *src,
+ x86_debug_state32_t *target,
+ boolean_t all)
{
if (all) {
target->dr4 = src->dr4;
/*
* Duplicate one x86_debug_state64_t to another. "all" parameter
* chooses whether dr4 and dr5 are copied (they are never meant
- * to be installed when we do machine_task_set_state() or
+ * to be installed when we do machine_task_set_state() or
* machine_thread_set_state()).
*/
void
copy_debug_state64(
- x86_debug_state64_t *src,
- x86_debug_state64_t *target,
- boolean_t all)
+ x86_debug_state64_t *src,
+ x86_debug_state64_t *target,
+ boolean_t all)
{
if (all) {
target->dr4 = src->dr4;
projects / apple / xnu.git / blobdiff