/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2016 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@
*/
/*
* @OSF_COPYRIGHT@
* the rights to redistribute these changes.
*/
-#include <mach_rt.h>
#include <mach_debug.h>
#include <mach_ldebug.h>
#include <mach/thread_status.h>
#include <mach/vm_param.h>
-#include <i386/cpu_data.h>
-#include <i386/cpu_number.h>
-
#include <kern/counters.h>
#include <kern/kalloc.h>
#include <kern/mach_param.h>
#include <kern/assert.h>
#include <kern/spl.h>
#include <kern/machine.h>
+#include <kern/kpc.h>
#include <ipc/ipc_port.h>
#include <vm/vm_kern.h>
#include <vm/vm_map.h>
#include <vm/pmap.h>
#include <vm/vm_protos.h>
-#include <i386/thread.h>
+#include <i386/cpu_data.h>
+#include <i386/cpu_number.h>
#include <i386/eflags.h>
#include <i386/proc_reg.h>
-#include <i386/seg.h>
-#include <i386/tss.h>
-#include <i386/user_ldt.h>
#include <i386/fpu.h>
-#include <i386/iopb_entries.h>
+#include <i386/misc_protos.h>
#include <i386/mp_desc.h>
-#include <i386/cpu_data.h>
+#include <i386/thread.h>
#include <i386/machine_routines.h>
+#include <i386/lapic.h> /* LAPIC_PMC_SWI_VECTOR */
+
+#if HYPERVISOR
+#include <kern/hv_support.h>
+#endif
/*
* Maps state flavor to number of words in the state:
*/
unsigned int _MachineStateCount[] = {
- /* FLAVOR_LIST */
- 0,
- x86_THREAD_STATE32_COUNT,
- x86_FLOAT_STATE32_COUNT,
- x86_EXCEPTION_STATE32_COUNT,
- x86_THREAD_STATE64_COUNT,
- x86_FLOAT_STATE64_COUNT,
- x86_EXCEPTION_STATE64_COUNT,
- x86_THREAD_STATE_COUNT,
- x86_FLOAT_STATE_COUNT,
- x86_EXCEPTION_STATE_COUNT,
- 0,
- x86_SAVED_STATE32_COUNT,
- x86_SAVED_STATE64_COUNT,
- x86_DEBUG_STATE32_COUNT,
- x86_DEBUG_STATE64_COUNT,
- x86_DEBUG_STATE_COUNT
+ [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 */
};
-zone_t iss_zone32; /* zone for 32bit saved_state area */
-zone_t iss_zone64; /* zone for 64bit saved_state area */
-zone_t ids_zone32; /* zone for 32bit debug_state area */
-zone_t ids_zone64; /* zone for 64bit debug_state area */
-
+zone_t iss_zone; /* zone for saved_state area */
+zone_t ids_zone; /* zone for debug_state area */
/* Forward */
-void act_machine_throughcall(thread_t thr_act);
-user_addr_t get_useraddr(void);
-void act_machine_return(int);
-void act_machine_sv_free(thread_t, int);
-
-extern thread_t Switch_context(
- thread_t old,
- thread_continue_t cont,
- thread_t new);
extern void Thread_continue(void);
extern void Load_context(
- thread_t thread);
-
+ thread_t thread) __attribute__((noreturn));
static void
get_exception_state32(thread_t thread, x86_exception_state32_t *es);
static int
set_thread_state64(thread_t thread, x86_thread_state64_t *ts);
+#if HYPERVISOR
+static inline void
+ml_hv_cswitch(thread_t old, thread_t new)
+{
+ if (old->hv_thread_target)
+ hv_callbacks.preempt(old->hv_thread_target);
+
+ if (new->hv_thread_target)
+ hv_callbacks.dispatch(new->hv_thread_target);
+}
+#endif
+
/*
- * Don't let an illegal value for dr7 get set. Specifically,
- * check for undefined settings. Setting these bit patterns
+ * Don't let an illegal value for the lower 32-bits of dr7 get set.
+ * Specifically, check for undefined settings. Setting these bit patterns
* result in undefined behaviour and can lead to an unexpected
* TRCTRAP.
*/
static boolean_t
-dr7_is_valid(uint32_t *dr7)
+dr7d_is_valid(uint32_t *dr7d)
{
int i;
uint32_t mask1, mask2;
if (!(get_cr4() & CR4_DE))
for (i = 0, mask1 = 0x3<<16, mask2 = 0x2<<16; i < 4;
i++, mask1 <<= 4, mask2 <<= 4)
- if ((*dr7 & mask1) == mask2)
- return (FALSE);
-
- /*
- * len0-3 pattern "10B" is ok for len on 64-bit.
- */
- if (current_cpu_datap()->cpu_is64bit == TRUE)
- for (i = 0, mask1 = 0x3<<18, mask2 = 0x2<<18; i < 4;
- i++, mask1 <<= 4, mask2 <<= 4)
- if ((*dr7 & mask1) == mask2)
+ if ((*dr7d & mask1) == mask2)
return (FALSE);
/*
* to "00B"
*/
for (i = 0; i < 4; i++)
- if (((((*dr7 >> (16 + i*4))) & 0x3) == 0) &&
- ((((*dr7 >> (18 + i*4))) & 0x3) != 0))
+ if (((((*dr7d >> (16 + i*4))) & 0x3) == 0) &&
+ ((((*dr7d >> (18 + i*4))) & 0x3) != 0))
return (FALSE);
/*
* Intel docs have these bits fixed.
*/
- *dr7 |= 0x1 << 10; /* set bit 10 to 1 */
- *dr7 &= ~(0x1 << 11); /* set bit 11 to 0 */
- *dr7 &= ~(0x1 << 12); /* set bit 12 to 0 */
- *dr7 &= ~(0x1 << 14); /* set bit 14 to 0 */
- *dr7 &= ~(0x1 << 15); /* set bit 15 to 0 */
+ *dr7d |= 0x1 << 10; /* set bit 10 to 1 */
+ *dr7d &= ~(0x1 << 11); /* set bit 11 to 0 */
+ *dr7d &= ~(0x1 << 12); /* set bit 12 to 0 */
+ *dr7d &= ~(0x1 << 14); /* set bit 14 to 0 */
+ *dr7d &= ~(0x1 << 15); /* set bit 15 to 0 */
/*
* We don't allow anything to set the global breakpoints.
*/
- if (*dr7 & 0x2)
+ if (*dr7d & 0x2)
return (FALSE);
- if (*dr7 & (0x2<<2))
+ if (*dr7d & (0x2<<2))
return (FALSE);
- if (*dr7 & (0x2<<4))
+ if (*dr7d & (0x2<<4))
return (FALSE);
- if (*dr7 & (0x2<<6))
+ if (*dr7d & (0x2<<6))
return (FALSE);
return (TRUE);
}
-static inline void
-set_live_debug_state32(cpu_data_t *cdp, x86_debug_state32_t *ds)
+extern void set_64bit_debug_regs(x86_debug_state64_t *ds);
+
+boolean_t
+debug_state_is_valid32(x86_debug_state32_t *ds)
{
- __asm__ volatile ("movl %0,%%db0" : :"r" (ds->dr0));
- __asm__ volatile ("movl %0,%%db1" : :"r" (ds->dr1));
- __asm__ volatile ("movl %0,%%db2" : :"r" (ds->dr2));
- __asm__ volatile ("movl %0,%%db3" : :"r" (ds->dr3));
- if (cpu_mode_is64bit())
- cdp->cpu_dr7 = ds->dr7;
-}
+ if (!dr7d_is_valid(&ds->dr7))
+ return FALSE;
-extern void set_64bit_debug_regs(x86_debug_state64_t *ds);
+ return TRUE;
+}
-static inline void
-set_live_debug_state64(cpu_data_t *cdp, x86_debug_state64_t *ds)
+boolean_t
+debug_state_is_valid64(x86_debug_state64_t *ds)
{
+ if (!dr7d_is_valid((uint32_t *)&ds->dr7))
+ return FALSE;
+
/*
- * We need to enter 64-bit mode in order to set the full
- * width of these registers
+ * Don't allow the user to set debug addresses above their max
+ * value
*/
- set_64bit_debug_regs(ds);
- cdp->cpu_dr7 = ds->dr7;
+ 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)
+ return FALSE;
+
+ 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)
+ return FALSE;
+
+ /* For x86-64, we must ensure the upper 32-bits of DR7 are clear */
+ ds->dr7 &= 0xffffffffULL;
+
+ return TRUE;
}
+
static kern_return_t
set_debug_state32(thread_t thread, x86_debug_state32_t *ds)
{
x86_debug_state32_t *ids;
pcb_t pcb;
- pcb = thread->machine.pcb;
+ pcb = THREAD_TO_PCB(thread);
ids = pcb->ids;
+ if (debug_state_is_valid32(ds) != TRUE) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
if (ids == NULL) {
- ids = zalloc(ids_zone32);
+ ids = zalloc(ids_zone);
bzero(ids, sizeof *ids);
simple_lock(&pcb->lock);
simple_unlock(&pcb->lock);
} else {
simple_unlock(&pcb->lock);
- zfree(ids_zone32, ids);
+ zfree(ids_zone, ids);
}
}
- if (!dr7_is_valid(&ds->dr7))
- goto err;
-
- /*
- * Only allow local breakpoints and make sure they are not
- * in the trampoline code.
- */
-
- if (ds->dr7 & 0x1)
- if (ds->dr0 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- if (ds->dr7 & (0x1<<2))
- if (ds->dr1 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- if (ds->dr7 & (0x1<<4))
- if (ds->dr2 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
-
- if (ds->dr7 & (0x1<<6))
- if (ds->dr3 >= (unsigned long)HIGH_MEM_BASE)
- goto err;
- ids->dr0 = ds->dr0;
- ids->dr1 = ds->dr1;
- ids->dr2 = ds->dr2;
- ids->dr3 = ds->dr3;
- ids->dr6 = ds->dr6;
- ids->dr7 = ds->dr7;
+ copy_debug_state32(ds, ids, FALSE);
return (KERN_SUCCESS);
-
-err:
- return (KERN_INVALID_ARGUMENT);
}
static kern_return_t
x86_debug_state64_t *ids;
pcb_t pcb;
- pcb = thread->machine.pcb;
+ pcb = THREAD_TO_PCB(thread);
ids = pcb->ids;
+ if (debug_state_is_valid64(ds) != TRUE) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
if (ids == NULL) {
- ids = zalloc(ids_zone64);
+ ids = zalloc(ids_zone);
bzero(ids, sizeof *ids);
+#if HYPERVISOR
+ if (thread->hv_thread_target) {
+ hv_callbacks.volatile_state(thread->hv_thread_target,
+ HV_DEBUG_STATE);
+ }
+#endif
+
simple_lock(&pcb->lock);
/* make sure it wasn't already alloc()'d elsewhere */
if (pcb->ids == NULL) {
simple_unlock(&pcb->lock);
} else {
simple_unlock(&pcb->lock);
- zfree(ids_zone64, ids);
+ zfree(ids_zone, ids);
}
}
- if (!dr7_is_valid((uint32_t *)&ds->dr7))
- goto err;
-
- /*
- * Don't allow the user to set debug addresses above their max
- * value
- */
- if (ds->dr7 & 0x1)
- if (ds->dr0 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- if (ds->dr7 & (0x1<<2))
- if (ds->dr1 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- if (ds->dr7 & (0x1<<4))
- if (ds->dr2 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- if (ds->dr7 & (0x1<<6))
- if (ds->dr3 >= VM_MAX_PAGE_ADDRESS)
- goto err;
-
- ids->dr0 = ds->dr0;
- ids->dr1 = ds->dr1;
- ids->dr2 = ds->dr2;
- ids->dr3 = ds->dr3;
- ids->dr6 = ds->dr6;
- ids->dr7 = ds->dr7;
+ copy_debug_state64(ds, ids, FALSE);
return (KERN_SUCCESS);
-
-err:
- return (KERN_INVALID_ARGUMENT);
}
static void
{
x86_debug_state32_t *saved_state;
- saved_state = thread->machine.pcb->ids;
+ saved_state = thread->machine.ids;
if (saved_state) {
- ds->dr0 = saved_state->dr0;
- ds->dr1 = saved_state->dr1;
- ds->dr2 = saved_state->dr2;
- ds->dr3 = saved_state->dr3;
- ds->dr4 = saved_state->dr4;
- ds->dr5 = saved_state->dr5;
- ds->dr6 = saved_state->dr6;
- ds->dr7 = saved_state->dr7;
+ copy_debug_state32(saved_state, ds, TRUE);
} else
bzero(ds, sizeof *ds);
}
{
x86_debug_state64_t *saved_state;
- saved_state = (x86_debug_state64_t *)thread->machine.pcb->ids;
+ saved_state = (x86_debug_state64_t *)thread->machine.ids;
if (saved_state) {
- ds->dr0 = saved_state->dr0;
- ds->dr1 = saved_state->dr1;
- ds->dr2 = saved_state->dr2;
- ds->dr3 = saved_state->dr3;
- ds->dr4 = saved_state->dr4;
- ds->dr5 = saved_state->dr5;
- ds->dr6 = saved_state->dr6;
- ds->dr7 = saved_state->dr7;
+ copy_debug_state64(saved_state, ds, TRUE);
} else
bzero(ds, sizeof *ds);
}
{
}
-
-
-static void
-act_machine_switch_pcb( thread_t new )
-{
- pcb_t pcb = new->machine.pcb;
- struct real_descriptor *ldtp;
- vm_offset_t pcb_stack_top;
- vm_offset_t hi_pcb_stack_top;
- vm_offset_t hi_iss;
- cpu_data_t *cdp = current_cpu_datap();
-
- assert(new->kernel_stack != 0);
- STACK_IEL(new->kernel_stack)->saved_state = pcb->iss;
-
- if (!cpu_mode_is64bit()) {
- x86_saved_state32_tagged_t *hi_iss32;
-
- /*
- * Save a pointer to the top of the "kernel" stack -
- * actually the place in the PCB where a trap into
- * kernel mode will push the registers.
- */
- hi_iss = (vm_offset_t)((unsigned long)
- pmap_cpu_high_map_vaddr(cpu_number(), HIGH_CPU_ISS0) |
- ((unsigned long)pcb->iss & PAGE_MASK));
-
- cdp->cpu_hi_iss = (void *)hi_iss;
-
- pmap_high_map(pcb->iss_pte0, HIGH_CPU_ISS0);
- pmap_high_map(pcb->iss_pte1, HIGH_CPU_ISS1);
-
- hi_iss32 = (x86_saved_state32_tagged_t *) hi_iss;
- assert(hi_iss32->tag == x86_SAVED_STATE32);
-
- hi_pcb_stack_top = (int) (hi_iss32 + 1);
-
- /*
- * For fast syscall, top of interrupt stack points to pcb stack
- */
- *(vm_offset_t *) current_sstk() = hi_pcb_stack_top;
-
- current_ktss()->esp0 = hi_pcb_stack_top;
-/* XXX: This check is performed against the thread save state flavor rather than the
- * task's 64-bit feature flag because of the thread/task 64-bit state divergence
- * that can arise in task_set_64bit() on x86. When that is addressed, we can
- * revert to checking the task 64 bit feature flag. The assert below is retained
- * for that reason.
- */
- } else if (is_saved_state64(pcb->iss)) {
- x86_saved_state64_tagged_t *iss64;
- vm_offset_t isf;
-
- assert(is_saved_state64(pcb->iss));
-
- iss64 = (x86_saved_state64_tagged_t *) pcb->iss;
-
- /*
- * Set pointer to PCB's interrupt stack frame in cpu data.
- * Used by syscall and double-fault trap handlers.
- */
- isf = (vm_offset_t) &iss64->state.isf;
- cdp->cpu_uber.cu_isf = UBER64(isf);
- pcb_stack_top = (vm_offset_t) (iss64 + 1);
- /* require 16-byte alignment */
- assert((pcb_stack_top & 0xF) == 0);
- /* Interrupt stack is pcb */
- current_ktss64()->rsp0 = UBER64(pcb_stack_top);
-
- /*
- * Top of temporary sysenter stack points to pcb stack.
- * Although this is not normally used by 64-bit users,
- * it needs to be set in case a sysenter is attempted.
- */
- *current_sstk64() = UBER64(pcb_stack_top);
-
- cdp->cpu_task_map = new->map->pmap->pm_kernel_cr3 ?
- TASK_MAP_64BIT_SHARED : TASK_MAP_64BIT;
-
- /*
- * Enable the 64-bit user code segment, USER64_CS.
- */
- ldt_desc_p(USER64_CS)->access |= ACC_PL_U;
-
- } else {
- x86_saved_state_compat32_t *iss32compat;
- vm_offset_t isf;
-
- assert(is_saved_state32(pcb->iss));
- iss32compat = (x86_saved_state_compat32_t *) pcb->iss;
-
- pcb_stack_top = (int) (iss32compat + 1);
- /* require 16-byte alignment */
- assert((pcb_stack_top & 0xF) == 0);
-
- /*
- * Set pointer to PCB's interrupt stack frame in cpu data.
- * Used by debug trap handler.
- */
- isf = (vm_offset_t) &iss32compat->isf64;
- cdp->cpu_uber.cu_isf = UBER64(isf);
-
- /* Top of temporary sysenter stack points to pcb stack */
- *current_sstk64() = UBER64(pcb_stack_top);
-
- /* Interrupt stack is pcb */
- current_ktss64()->rsp0 = UBER64(pcb_stack_top);
-
- cdp->cpu_task_map = TASK_MAP_32BIT;
-
- /*
- * Disable USER64_CS
- */
- ldt_desc_p(USER64_CS)->access &= ~ACC_PL_U;
- }
-
- /*
- * Set the thread`s cthread (a.k.a pthread)
- * For 32-bit user this involves setting the USER_CTHREAD
- * descriptor in the LDT to point to the cthread data.
- * The involves copying in the pre-initialized descriptor.
- */
- ldtp = (struct real_descriptor *)current_ldt();
- ldtp[sel_idx(USER_CTHREAD)] = pcb->cthread_desc;
- if (pcb->uldt_selector != 0)
- ldtp[sel_idx(pcb->uldt_selector)] = pcb->uldt_desc;
- /*
- * For 64-bit, we additionally set the 64-bit User GS base
- * address. On return to 64-bit user, the GS.Base MSR will be written.
- */
- cdp->cpu_uber.cu_user_gs_base = pcb->cthread_self;
-
- /*
- * Set the thread`s LDT or LDT entry.
- */
- if (new->task == TASK_NULL || new->task->i386_ldt == 0) {
- /*
- * Use system LDT.
- */
- ml_cpu_set_ldt(KERNEL_LDT);
- } else {
- /*
- * Task has its own LDT.
- */
- user_ldt_set(new);
- }
-}
-
/*
* Switch to the first thread on a CPU.
*/
thread_t new)
{
new->machine.specFlags |= OnProc;
- act_machine_switch_pcb(new);
+ act_machine_switch_pcb(NULL, new);
Load_context(new);
}
+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)) {
+ PMAP_DEACTIVATE_MAP(omap, ot, cnum);
+ PMAP_ACTIVATE_MAP(nmap, nt, cnum);
+ }
+}
+
/*
* Switch to a new thread.
* Save the old thread`s kernel state or continuation,
thread_continue_t continuation,
thread_t new)
{
-#if MACH_RT
- assert(current_cpu_datap()->cpu_active_stack == old->kernel_stack);
-#endif
+ assert(current_cpu_datap()->cpu_active_stack == old->kernel_stack);
+
+#if KPC
+ kpc_off_cpu(old);
+#endif /* KPC */
/*
* Save FP registers if in use.
*/
- fpu_save_context(old);
+ fpu_switch_context(old, new);
old->machine.specFlags &= ~OnProc;
new->machine.specFlags |= OnProc;
+ /*
+ * Monitor the stack depth and report new max,
+ * not worrying about races.
+ */
+ vm_offset_t depth = current_stack_depth();
+ if (depth > kernel_stack_depth_max) {
+ kernel_stack_depth_max = depth;
+ KERNEL_DEBUG_CONSTANT(
+ MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_DEPTH),
+ (long) depth, 0, 0, 0, 0);
+ }
+
/*
* Switch address maps if need be, even if not switching tasks.
* (A server activation may be "borrowing" a client map.)
*/
- PMAP_SWITCH_CONTEXT(old, new, cpu_number())
+ pmap_switch_context(old, new, cpu_number());
/*
* Load the rest of the user state for the new thread
*/
- act_machine_switch_pcb(new);
- KERNEL_DEBUG_CONSTANT(
- MACHDBG_CODE(DBG_MACH_SCHED,MACH_SCHED) | DBG_FUNC_NONE,
- (int)old, (int)new, old->sched_pri, new->sched_pri, 0);
+ act_machine_switch_pcb(old, new);
+
+#if HYPERVISOR
+ ml_hv_cswitch(old, new);
+#endif
+
return(Switch_context(old, continuation, new));
}
-/*
- * act_machine_sv_free
- * release saveareas associated with an act. if flag is true, release
- * user level savearea(s) too, else don't
- */
-void
-act_machine_sv_free(__unused thread_t act, __unused int flag)
+thread_t
+machine_processor_shutdown(
+ 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));
}
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 (thread->machine.pcb->ifps) {
- (void) fpu_set_fxstate(thread, NULL);
+ /*
+ * 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())
- clear_fpu();
+ clear_fpu();
}
- return KERN_SUCCESS;
+
+ if (thread->machine.ids) {
+ zfree(ids_zone, thread->machine.ids);
+ thread->machine.ids = NULL;
+ }
+
+ return KERN_SUCCESS;
}
uint32_t
* for either 32bit or 64bit tasks
*/
-
+
static void
get_exception_state64(thread_t thread, x86_exception_state64_t *es)
{
saved_state = USER_REGS64(thread);
es->trapno = saved_state->isf.trapno;
- es->err = saved_state->isf.err;
+ es->cpu = saved_state->isf.cpu;
+ es->err = (typeof(es->err))saved_state->isf.err;
es->faultvaddr = saved_state->cr2;
}
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;
}
{
x86_saved_state32_t *saved_state;
+ pal_register_cache_state(thread, DIRTY);
+
saved_state = USER_REGS32(thread);
+ /*
+ * Scrub segment selector values:
+ */
+ ts->cs = USER_CS;
+ /*
+ * On a 64 bit kernel, we always override the data segments,
+ * as the actual selector numbers have changed. This also
+ * means that we don't support setting the data segments
+ * manually any more.
+ */
+ ts->ss = USER_DS;
+ ts->ds = USER_DS;
+ ts->es = USER_DS;
+
+ /* 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);
+
saved_state->eax = ts->eax;
saved_state->ebx = ts->ebx;
saved_state->ecx = ts->ecx;
saved_state->uesp = ts->esp;
saved_state->efl = (ts->eflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
saved_state->eip = ts->eip;
- saved_state->cs = ts->cs ? ts->cs : USER_CS;
- saved_state->ss = ts->ss ? ts->ss : USER_DS;
- saved_state->ds = ts->ds ? ts->ds : USER_DS;
- saved_state->es = ts->es ? ts->es : USER_DS;
+ saved_state->cs = ts->cs;
+ saved_state->ss = ts->ss;
+ saved_state->ds = ts->ds;
+ saved_state->es = ts->es;
saved_state->fs = ts->fs;
saved_state->gs = ts->gs;
{
x86_saved_state64_t *saved_state;
+ pal_register_cache_state(thread, DIRTY);
+
saved_state = USER_REGS64(thread);
if (!IS_USERADDR64_CANONICAL(ts->rsp) ||
saved_state->r14 = ts->r14;
saved_state->r15 = ts->r15;
saved_state->rax = ts->rax;
- saved_state->rax = ts->rax;
saved_state->rbx = ts->rbx;
saved_state->rcx = ts->rcx;
saved_state->rdx = ts->rdx;
saved_state->isf.rflags = (ts->rflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
saved_state->isf.rip = ts->rip;
saved_state->isf.cs = USER64_CS;
- saved_state->fs = ts->fs;
- saved_state->gs = ts->gs;
+ saved_state->fs = (uint32_t)ts->fs;
+ saved_state->gs = (uint32_t)ts->gs;
return(KERN_SUCCESS);
}
{
x86_saved_state32_t *saved_state;
+ pal_register_cache_state(thread, VALID);
+
saved_state = USER_REGS32(thread);
ts->eax = saved_state->eax;
{
x86_saved_state64_t *saved_state;
+ pal_register_cache_state(thread, VALID);
+
saved_state = USER_REGS64(thread);
ts->r8 = saved_state->r8;
}
-
/*
* act_machine_set_state:
*
thread_state_t tstate,
mach_msg_type_number_t count)
{
-
- switch (flavor)
+ switch (flavor) {
+ case x86_SAVED_STATE32:
{
- 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);
+ return(KERN_INVALID_ARGUMENT);
+
+ if (thread_is_64bit(thr_act))
+ return(KERN_INVALID_ARGUMENT);
state = (x86_saved_state32_t *) tstate;
/* Check segment selectors are safe */
if (!valid_user_segment_selectors(state->cs,
- state->ss,
- state->ds,
- state->es,
- state->fs,
- state->gs))
- return KERN_INVALID_ARGUMENT;
-
+ state->ss,
+ state->ds,
+ state->es,
+ state->fs,
+ state->gs))
+ return KERN_INVALID_ARGUMENT;
+
+ pal_register_cache_state(thr_act, DIRTY);
+
saved_state = USER_REGS32(thr_act);
/*
saved_state->es = state->es;
saved_state->fs = state->fs;
saved_state->gs = state->gs;
+
break;
- }
+ }
- case x86_SAVED_STATE64:
- {
+ 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);
+ return(KERN_INVALID_ARGUMENT);
+
+ if (!thread_is_64bit(thr_act))
+ return(KERN_INVALID_ARGUMENT);
state = (x86_saved_state64_t *) tstate;
- /* Check segment selectors are safe XXX gs/fs? */
- if (!valid_user_code_selector(state->isf.cs) ||
- !valid_user_data_selector(state->fs) ||
- !valid_user_data_selector(state->gs))
+ /* Verify that the supplied code segment selector is
+ * valid. In 64-bit mode, the FS and GS segment overrides
+ * use the FS.base and GS.base MSRs to calculate
+ * base addresses, and the trampolines don't directly
+ * restore the segment registers--hence they are no
+ * longer relevant for validation.
+ */
+ if (!valid_user_code_selector(state->isf.cs))
return KERN_INVALID_ARGUMENT;
/* Check pc and stack are canonical addresses */
!IS_USERADDR64_CANONICAL(state->isf.rip))
return KERN_INVALID_ARGUMENT;
+ pal_register_cache_state(thr_act, DIRTY);
+
saved_state = USER_REGS64(thr_act);
/*
saved_state->isf.rflags = (state->isf.rflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
- /*
+ /*
* User setting segment registers.
* Code and stack selectors have already been
* checked. Others will be reset by 'sys'
* if they are not valid.
*/
- saved_state->isf.cs = state->isf.cs;
+ saved_state->isf.cs = state->isf.cs;
saved_state->isf.ss = state->isf.ss;
saved_state->fs = state->fs;
saved_state->gs = state->gs;
break;
- }
+ }
- case x86_FLOAT_STATE32:
- {
- if (count != x86_FLOAT_STATE32_COUNT)
+ 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 (thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
- return fpu_set_fxstate(thr_act, tstate);
- }
+ return fpu_set_fxstate(thr_act, tstate, flavor);
+ }
- case x86_FLOAT_STATE64:
- {
- if (count != x86_FLOAT_STATE64_COUNT)
+ 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 ( !thread_is_64bit(thr_act))
+ if (!thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
- return fpu_set_fxstate(thr_act, tstate);
- }
+ return fpu_set_fxstate(thr_act, tstate, flavor);
+ }
- case x86_FLOAT_STATE:
- {
- x86_float_state_t *state;
+ case x86_FLOAT_STATE:
+ {
+ x86_float_state_t *state;
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 &&
thread_is_64bit(thr_act)) {
- return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs64);
+ return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs64, x86_FLOAT_STATE64);
}
if (state->fsh.flavor == x86_FLOAT_STATE32 && state->fsh.count == x86_FLOAT_STATE32_COUNT &&
!thread_is_64bit(thr_act)) {
- return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs32);
+ return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs32, x86_FLOAT_STATE32);
}
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);
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
- {
+ 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] &&
+ thread_is_64bit(thr_act)) {
+ return fpu_set_fxstate(thr_act,
+ (thread_state_t)&state->ufs.as64,
+ flavor - 1);
+ }
+ /* 32-bit flavor? */
+ if (state->ash.flavor == (flavor - 2) &&
+ state->ash.count == _MachineStateCount[flavor - 2] &&
+ !thread_is_64bit(thr_act)) {
+ return fpu_set_fxstate(thr_act,
+ (thread_state_t)&state->ufs.as32,
+ flavor - 2);
+ }
+ return(KERN_INVALID_ARGUMENT);
+ }
+
+ case x86_THREAD_STATE32:
+ {
if (count != x86_THREAD_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
if (thread_is_64bit(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 ( !thread_is_64bit(thr_act))
+ if (!thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
return set_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
- }
- case x86_THREAD_STATE:
- {
- x86_thread_state_t *state;
+ }
+ 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;
- if (state->tsh.flavor == x86_THREAD_STATE64 && state->tsh.count == x86_THREAD_STATE64_COUNT &&
+ if (state->tsh.flavor == x86_THREAD_STATE64 &&
+ state->tsh.count == x86_THREAD_STATE64_COUNT &&
thread_is_64bit(thr_act)) {
- return set_thread_state64(thr_act, &state->uts.ts64);
- } else if (state->tsh.flavor == x86_THREAD_STATE32 && state->tsh.count == x86_THREAD_STATE32_COUNT &&
+ return set_thread_state64(thr_act, &state->uts.ts64);
+ } else if (state->tsh.flavor == x86_THREAD_STATE32 &&
+ state->tsh.count == x86_THREAD_STATE32_COUNT &&
!thread_is_64bit(thr_act)) {
- return set_thread_state32(thr_act, &state->uts.ts32);
+ return set_thread_state32(thr_act, &state->uts.ts32);
} else
- return(KERN_INVALID_ARGUMENT);
-
- break;
- }
+ return(KERN_INVALID_ARGUMENT);
+ }
case x86_DEBUG_STATE32:
{
x86_debug_state32_t *state;
thread_state_t tstate,
mach_msg_type_number_t *count)
{
+
switch (flavor) {
case THREAD_STATE_FLAVOR_LIST:
break;
}
+ case THREAD_STATE_FLAVOR_LIST_10_9:
+ {
+ if (*count < 5)
+ 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;
+
+ *count = 5;
+ break;
+ }
+
+#if !defined(RC_HIDE_XNU_J137)
+ case THREAD_STATE_FLAVOR_LIST_10_13:
+ {
+ if (*count < 6)
+ 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;
+
+ *count = 6;
+ break;
+ }
+
+#endif
case x86_SAVED_STATE32:
{
x86_saved_state32_t *state;
if (*count < x86_SAVED_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
+ if (thread_is_64bit(thr_act))
+ return(KERN_INVALID_ARGUMENT);
+
state = (x86_saved_state32_t *) tstate;
saved_state = USER_REGS32(thr_act);
if (*count < x86_SAVED_STATE64_COUNT)
return(KERN_INVALID_ARGUMENT);
+ if (!thread_is_64bit(thr_act))
+ return(KERN_INVALID_ARGUMENT);
+
state = (x86_saved_state64_t *)tstate;
saved_state = USER_REGS64(thr_act);
*count = x86_FLOAT_STATE32_COUNT;
- return fpu_get_fxstate(thr_act, tstate);
+ return fpu_get_fxstate(thr_act, tstate, flavor);
}
case x86_FLOAT_STATE64:
*count = x86_FLOAT_STATE64_COUNT;
- return fpu_get_fxstate(thr_act, tstate);
+ return fpu_get_fxstate(thr_act, tstate, flavor);
}
case x86_FLOAT_STATE:
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);
+ kret = fpu_get_fxstate(thr_act, (thread_state_t)&state->ufs.fs64, x86_FLOAT_STATE64);
} else {
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);
+ kret = fpu_get_fxstate(thr_act, (thread_state_t)&state->ufs.fs32, x86_FLOAT_STATE32);
}
*count = x86_FLOAT_STATE_COUNT;
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);
+
+ if (thread_is_64bit(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);
+
+ if ( !thread_is_64bit(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;
+
+ 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(thr_act)) {
+ flavor -= 1; /* 64-bit flavor */
+ fstate = (thread_state_t) &state->ufs.as64;
+ } else {
+ flavor -= 2; /* 32-bit flavor */
+ fstate = (thread_state_t) &state->ufs.as32;
+ }
+ state->ash.flavor = flavor;
+ state->ash.count = _MachineStateCount[flavor];
+
+ return fpu_get_fxstate(thr_act, fstate, flavor);
+ }
- case OLD_i386_THREAD_STATE:
case x86_THREAD_STATE32:
{
if (*count < x86_THREAD_STATE32_COUNT)
*count = x86_EXCEPTION_STATE32_COUNT;
get_exception_state32(thr_act, (x86_exception_state32_t *)tstate);
+ /*
+ * Suppress the cpu number for binary compatibility
+ * of this deprecated state.
+ */
+ ((x86_exception_state32_t *)tstate)->cpu = 0;
break;
}
*count = x86_EXCEPTION_STATE64_COUNT;
get_exception_state64(thr_act, (x86_exception_state64_t *)tstate);
+ /*
+ * Suppress the cpu number for binary compatibility
+ * of this deprecated state.
+ */
+ ((x86_exception_state64_t *)tstate)->cpu = 0;
break;
}
*count = x86_DEBUG_STATE_COUNT;
break;
}
- default:
+ default:
return(KERN_INVALID_ARGUMENT);
}
thread_state_t tstate,
mach_msg_type_number_t *count)
{
+ x86_saved_state_t *int_state = current_cpu_datap()->cpu_int_state;
/*
* This works only for an interrupted kernel thread
*/
- if (thread != current_thread() || current_cpu_datap()->cpu_int_state == NULL)
+ if (thread != current_thread() || int_state == NULL)
return KERN_FAILURE;
- switch(flavor) {
-
- case x86_THREAD_STATE32:
- {
+ switch (flavor) {
+ case x86_THREAD_STATE32: {
+ x86_thread_state32_t *state;
+ x86_saved_state32_t *saved_state;
- 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);
- if (*count < x86_THREAD_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (x86_thread_state32_t *)tstate;
+ state = (x86_thread_state32_t *) tstate;
- assert(is_saved_state32(current_cpu_datap()->cpu_int_state));
- saved_state = saved_state32(current_cpu_datap()->cpu_int_state);
- /*
- * General registers.
- */
- state->eax = saved_state->eax;
- state->ebx = saved_state->ebx;
- state->ecx = saved_state->ecx;
- state->edx = saved_state->edx;
- state->edi = saved_state->edi;
- state->esi = saved_state->esi;
- state->ebp = saved_state->ebp;
- state->esp = saved_state->uesp;
- state->eflags = saved_state->efl;
- state->eip = saved_state->eip;
- state->cs = saved_state->cs;
- state->ss = saved_state->ss;
- 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_THREAD_STATE32_COUNT;
-
- return KERN_SUCCESS;
- }
- break; // for completeness
+ saved_state = saved_state32(int_state);
+ /*
+ * General registers.
+ */
+ state->eax = saved_state->eax;
+ state->ebx = saved_state->ebx;
+ state->ecx = saved_state->ecx;
+ state->edx = saved_state->edx;
+ state->edi = saved_state->edi;
+ state->esi = saved_state->esi;
+ state->ebp = saved_state->ebp;
+ state->esp = saved_state->uesp;
+ state->eflags = saved_state->efl;
+ state->eip = saved_state->eip;
+ state->cs = saved_state->cs;
+ state->ss = saved_state->ss;
+ 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_THREAD_STATE32_COUNT;
+
+ return KERN_SUCCESS;
+ }
+
+ 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);
- case x86_THREAD_STATE:
- {
- // wrap a 32 bit thread state into a 32/64bit clean thread state
- x86_thread_state_t *state;
- x86_saved_state32_t *saved_state;
+ state = (x86_thread_state64_t *) tstate;
- if(*count < x86_THREAD_STATE_COUNT)
- return (KERN_INVALID_ARGUMENT);
+ saved_state = saved_state64(int_state);
+ /*
+ * General registers.
+ */
+ state->rax = saved_state->rax;
+ state->rbx = saved_state->rbx;
+ state->rcx = saved_state->rcx;
+ state->rdx = saved_state->rdx;
+ state->rdi = saved_state->rdi;
+ state->rsi = saved_state->rsi;
+ state->rbp = saved_state->rbp;
+ state->rsp = saved_state->isf.rsp;
+ state->r8 = saved_state->r8;
+ state->r9 = saved_state->r9;
+ state->r10 = saved_state->r10;
+ state->r11 = saved_state->r11;
+ state->r12 = saved_state->r12;
+ state->r13 = saved_state->r13;
+ state->r14 = saved_state->r14;
+ state->r15 = saved_state->r15;
+
+ state->rip = saved_state->isf.rip;
+ state->rflags = saved_state->isf.rflags;
+ state->cs = saved_state->isf.cs;
+ state->fs = saved_state->fs & 0xffff;
+ state->gs = saved_state->gs & 0xffff;
+ *count = x86_THREAD_STATE64_COUNT;
- state = (x86_thread_state_t *)tstate;
- assert(is_saved_state32(current_cpu_datap()->cpu_int_state));
- saved_state = saved_state32(current_cpu_datap()->cpu_int_state);
+ return KERN_SUCCESS;
+ }
+
+ case x86_THREAD_STATE: {
+ x86_thread_state_t *state = NULL;
+
+ if (*count < x86_THREAD_STATE_COUNT)
+ return (KERN_INVALID_ARGUMENT);
+
+ state = (x86_thread_state_t *) tstate;
+
+ if (is_saved_state32(int_state)) {
+ x86_saved_state32_t *saved_state = saved_state32(int_state);
state->tsh.flavor = x86_THREAD_STATE32;
state->tsh.count = x86_THREAD_STATE32_COUNT;
-
- /*
+
+ /*
* General registers.
*/
-
state->uts.ts32.eax = saved_state->eax;
state->uts.ts32.ebx = saved_state->ebx;
state->uts.ts32.ecx = saved_state->ecx;
state->uts.ts32.es = saved_state->es & 0xffff;
state->uts.ts32.fs = saved_state->fs & 0xffff;
state->uts.ts32.gs = saved_state->gs & 0xffff;
-
- *count = x86_THREAD_STATE_COUNT;
- return KERN_SUCCESS;
- }
- break;
- }
- return KERN_FAILURE;
-}
+ } else if (is_saved_state64(int_state)) {
+ x86_saved_state64_t *saved_state = saved_state64(int_state);
+ state->tsh.flavor = x86_THREAD_STATE64;
+ state->tsh.count = x86_THREAD_STATE64_COUNT;
-/*
- * Initialize the machine-dependent state for a new thread.
- */
-kern_return_t
-machine_thread_create(
- thread_t thread,
- task_t task)
-{
- pcb_t pcb = &thread->machine.xxx_pcb;
- struct real_descriptor *ldtp;
- pmap_paddr_t paddr;
- x86_saved_state_t *iss;
-
- inval_copy_windows(thread);
-
- thread->machine.physwindow_pte = 0;
- thread->machine.physwindow_busy = 0;
-
- if (task_has_64BitAddr(task)) {
- x86_sframe64_t *sf64;
-
- sf64 = (x86_sframe64_t *)zalloc(iss_zone64);
-
- if (sf64 == NULL)
- panic("iss_zone64");
- pcb->sf = (void *)sf64;
-
- bzero((char *)sf64, sizeof(x86_sframe64_t));
-
- iss = (x86_saved_state_t *) &sf64->ssf;
- iss->flavor = x86_SAVED_STATE64;
- /*
- * Guarantee that the bootstrapped thread will be in user
- * mode.
- */
- iss->ss_64.isf.rflags = EFL_USER_SET;
- iss->ss_64.isf.cs = USER64_CS;
- iss->ss_64.isf.ss = USER_DS;
- iss->ss_64.fs = USER_DS;
- iss->ss_64.gs = USER_DS;
- } else {
- if (cpu_mode_is64bit()) {
- x86_sframe_compat32_t *sfc32;
-
- sfc32 = (x86_sframe_compat32_t *)zalloc(iss_zone32);
- if (sfc32 == NULL)
- panic("iss_zone32");
- pcb->sf = (void *)sfc32;
-
- bzero((char *)sfc32, sizeof(x86_sframe_compat32_t));
-
- iss = (x86_saved_state_t *) &sfc32->ssf.iss32;
- iss->flavor = x86_SAVED_STATE32;
-#if DEBUG
- {
- x86_saved_state_compat32_t *xssc;
-
- xssc = (x86_saved_state_compat32_t *) iss;
- xssc->pad_for_16byte_alignment[0] = 0x64326432;
- xssc->pad_for_16byte_alignment[1] = 0x64326432;
- }
-#endif
+ /*
+ * General registers.
+ */
+ state->uts.ts64.rax = saved_state->rax;
+ state->uts.ts64.rbx = saved_state->rbx;
+ state->uts.ts64.rcx = saved_state->rcx;
+ state->uts.ts64.rdx = saved_state->rdx;
+ state->uts.ts64.rdi = saved_state->rdi;
+ state->uts.ts64.rsi = saved_state->rsi;
+ state->uts.ts64.rbp = saved_state->rbp;
+ state->uts.ts64.rsp = saved_state->isf.rsp;
+ state->uts.ts64.r8 = saved_state->r8;
+ state->uts.ts64.r9 = saved_state->r9;
+ state->uts.ts64.r10 = saved_state->r10;
+ state->uts.ts64.r11 = saved_state->r11;
+ state->uts.ts64.r12 = saved_state->r12;
+ state->uts.ts64.r13 = saved_state->r13;
+ state->uts.ts64.r14 = saved_state->r14;
+ state->uts.ts64.r15 = saved_state->r15;
+
+ state->uts.ts64.rip = saved_state->isf.rip;
+ state->uts.ts64.rflags = saved_state->isf.rflags;
+ state->uts.ts64.cs = saved_state->isf.cs;
+ state->uts.ts64.fs = saved_state->fs & 0xffff;
+ state->uts.ts64.gs = saved_state->gs & 0xffff;
} else {
- x86_sframe32_t *sf32;
-
- sf32 = (x86_sframe32_t *)zalloc(iss_zone32);
-
- if (sf32 == NULL)
- panic("iss_zone32");
- pcb->sf = (void *)sf32;
-
- bzero((char *)sf32, sizeof(x86_sframe32_t));
-
- iss = (x86_saved_state_t *) &sf32->ssf;
- iss->flavor = x86_SAVED_STATE32;
+ panic("unknown thread state");
}
- /*
- * Guarantee that the bootstrapped thread will be in user
- * mode.
- */
- iss->ss_32.cs = USER_CS;
- iss->ss_32.ss = USER_DS;
- iss->ss_32.ds = USER_DS;
- iss->ss_32.es = USER_DS;
- iss->ss_32.fs = USER_DS;
- iss->ss_32.gs = USER_DS;
- iss->ss_32.efl = EFL_USER_SET;
- }
- pcb->iss = iss;
-
- thread->machine.pcb = pcb;
- simple_lock_init(&pcb->lock, 0);
-
- ldtp = (struct real_descriptor *)pmap_index_to_virt(HIGH_FIXED_LDT_BEGIN);
- pcb->cthread_desc = ldtp[sel_idx(USER_DS)];
- pcb->uldt_desc = ldtp[sel_idx(USER_DS)];
- pcb->uldt_selector = 0;
-
- pcb->iss_pte0 = (uint64_t)pte_kernel_rw(kvtophys((vm_offset_t)pcb->iss));
-
- if (0 == (paddr = pa_to_pte(kvtophys((vm_offset_t)(pcb->iss) + PAGE_SIZE))))
- pcb->iss_pte1 = INTEL_PTE_INVALID;
- else
- pcb->iss_pte1 = (uint64_t)pte_kernel_rw(paddr);
-
- return(KERN_SUCCESS);
-}
-
-/*
- * Machine-dependent cleanup prior to destroying a thread
- */
-void
-machine_thread_destroy(
- thread_t thread)
-{
- register pcb_t pcb = thread->machine.pcb;
- assert(pcb);
-
- if (pcb->ifps != 0)
- fpu_free(pcb->ifps);
- if (pcb->sf != 0) {
- if (thread_is_64bit(thread))
- zfree(iss_zone64, pcb->sf);
- else
- zfree(iss_zone32, pcb->sf);
- pcb->sf = 0;
- }
- if (pcb->ids) {
- if (thread_is_64bit(thread))
- zfree(ids_zone64, pcb->ids);
- else
- zfree(ids_zone32, pcb->ids);
+ *count = x86_THREAD_STATE_COUNT;
+ return KERN_SUCCESS;
+ }
}
- thread->machine.pcb = (pcb_t)0;
-
+ return KERN_FAILURE;
}
+
void
-machine_thread_switch_addrmode(thread_t thread, int oldmode_is64bit)
+machine_thread_switch_addrmode(thread_t thread)
{
- register pcb_t pcb = thread->machine.pcb;
+ /*
+ * We don't want to be preempted until we're done
+ * - particularly if we're switching the current thread
+ */
+ disable_preemption();
- assert(pcb);
-
- if (pcb->sf != 0) {
- if (oldmode_is64bit)
- zfree(iss_zone64, pcb->sf);
- else
- zfree(iss_zone32, pcb->sf);
- }
+ /*
+ * Reset the state saveareas. As we're resetting, we anticipate no
+ * memory allocations in this path.
+ */
machine_thread_create(thread, thread->task);
+ /* Adjust FPU state */
+ fpu_switch_addrmode(thread, task_has_64BitAddr(thread->task));
+
/* If we're switching ourselves, reset the pcb addresses etc. */
- if (thread == current_thread())
- act_machine_switch_pcb(thread);
+ if (thread == current_thread()) {
+ boolean_t istate = ml_set_interrupts_enabled(FALSE);
+ act_machine_switch_pcb(NULL, thread);
+ ml_set_interrupts_enabled(istate);
+ }
+ enable_preemption();
}
* when starting up a new processor
*/
void
-machine_set_current_thread( thread_t thread )
+machine_set_current_thread(thread_t thread)
{
current_cpu_datap()->cpu_active_thread = thread;
}
-/*
- * This is called when a task is termianted.
- */
-void
-machine_thread_terminate_self(void)
-{
- task_t self_task = current_task();
- if (self_task) {
- user_ldt_t user_ldt = self_task->i386_ldt;
- if (user_ldt != 0) {
- self_task->i386_ldt = 0;
- user_ldt_free(user_ldt);
- }
- }
-}
-
-void
-act_machine_return(int code)
-{
- /*
- * This code is called with nothing locked.
- * It also returns with nothing locked, if it returns.
- *
- * This routine terminates the current thread activation.
- * If this is the only activation associated with its
- * thread shuttle, then the entire thread (shuttle plus
- * activation) is terminated.
- */
- assert( code == KERN_TERMINATED );
-
- thread_terminate_self();
-
- /*NOTREACHED*/
-
- panic("act_machine_return(%d): TALKING ZOMBIE! (1)", code);
-}
-
/*
* Perform machine-dependent per-thread initializations
void
machine_thread_init(void)
{
- if (cpu_mode_is64bit()) {
- iss_zone64 = zinit(sizeof(x86_sframe64_t),
- THREAD_MAX * sizeof(x86_sframe64_t),
- THREAD_CHUNK * sizeof(x86_sframe64_t),
- "x86_64 saved state");
-
- assert(sizeof(x86_sframe_compat32_t) % 16 == 0);
- iss_zone32 = zinit(sizeof(x86_sframe_compat32_t),
- THREAD_MAX * sizeof(x86_sframe_compat32_t),
- THREAD_CHUNK * sizeof(x86_sframe_compat32_t),
- "x86_32 saved state");
-
- ids_zone32 = zinit(sizeof(x86_debug_state32_t),
- THREAD_MAX * (sizeof(x86_debug_state32_t)),
- THREAD_CHUNK * (sizeof(x86_debug_state32_t)),
- "x86_32 debug state");
- ids_zone64 = zinit(sizeof(x86_debug_state64_t),
- THREAD_MAX * sizeof(x86_debug_state64_t),
- THREAD_CHUNK * sizeof(x86_debug_state64_t),
- "x86_64 debug state");
-
- } else {
- iss_zone32 = zinit(sizeof(x86_sframe32_t),
- THREAD_MAX * sizeof(x86_sframe32_t),
- THREAD_CHUNK * sizeof(x86_sframe32_t),
- "x86 saved state");
- ids_zone32 = zinit(sizeof(x86_debug_state32_t),
- THREAD_MAX * (sizeof(x86_debug_state32_t)),
- THREAD_CHUNK * (sizeof(x86_debug_state32_t)),
- "x86 debug state");
- }
- fpu_module_init();
- iopb_init();
-}
-
-/*
- * Some routines for debugging activation code
- */
-static void dump_handlers(thread_t);
-void dump_regs(thread_t);
-int dump_act(thread_t thr_act);
-
-static void
-dump_handlers(thread_t thr_act)
-{
- ReturnHandler *rhp = thr_act->handlers;
- int counter = 0;
-
- printf("\t");
- while (rhp) {
- if (rhp == &thr_act->special_handler){
- if (rhp->next)
- printf("[NON-Zero next ptr(%x)]", rhp->next);
- printf("special_handler()->");
- break;
- }
- printf("hdlr_%d(%x)->",counter,rhp->handler);
- rhp = rhp->next;
- if (++counter > 32) {
- printf("Aborting: HUGE handler chain\n");
- break;
- }
- }
- printf("HLDR_NULL\n");
-}
-
-void
-dump_regs(thread_t thr_act)
-{
- if (thr_act->machine.pcb == NULL)
- return;
-
- if (thread_is_64bit(thr_act)) {
- x86_saved_state64_t *ssp;
-
- ssp = USER_REGS64(thr_act);
-
- panic("dump_regs: 64bit tasks not yet supported");
-
- } else {
- x86_saved_state32_t *ssp;
+ 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");
- ssp = USER_REGS32(thr_act);
+ 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");
- /*
- * Print out user register state
- */
- printf("\tRegs:\tedi=%x esi=%x ebp=%x ebx=%x edx=%x\n",
- ssp->edi, ssp->esi, ssp->ebp, ssp->ebx, ssp->edx);
-
- printf("\t\tecx=%x eax=%x eip=%x efl=%x uesp=%x\n",
- ssp->ecx, ssp->eax, ssp->eip, ssp->efl, ssp->uesp);
-
- printf("\t\tcs=%x ss=%x\n", ssp->cs, ssp->ss);
- }
+ fpu_module_init();
}
-int
-dump_act(thread_t thr_act)
-{
- if (!thr_act)
- return(0);
-
- printf("thread(0x%x)(%d): task=%x(%d)\n",
- thr_act, thr_act->ref_count,
- thr_act->task, thr_act->task ? thr_act->task->ref_count : 0);
- printf("\tsusp=%d user_stop=%d active=%x ast=%x\n",
- thr_act->suspend_count, thr_act->user_stop_count,
- thr_act->active, thr_act->ast);
- printf("\tpcb=%x\n", thr_act->machine.pcb);
-
- if (thr_act->kernel_stack) {
- vm_offset_t stack = thr_act->kernel_stack;
-
- printf("\tk_stk %x eip %x ebx %x esp %x iss %x\n",
- stack, STACK_IKS(stack)->k_eip, STACK_IKS(stack)->k_ebx,
- STACK_IKS(stack)->k_esp, STACK_IEL(stack)->saved_state);
- }
-
- dump_handlers(thr_act);
- dump_regs(thr_act);
- return((int)thr_act);
-}
user_addr_t
get_useraddr(void)
{
thread_t thr_act = current_thread();
- if (thr_act->machine.pcb == NULL)
- return (0);
-
if (thread_is_64bit(thr_act)) {
x86_saved_state64_t *iss64;
vm_offset_t stack;
KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_DETACH),
- thread, thread->priority,
+ (uintptr_t)thread_tid(thread), thread->priority,
thread->sched_pri, 0,
0);
thread_t thread,
vm_offset_t stack)
{
- struct x86_kernel_state32 *statep;
+ struct x86_kernel_state *statep;
KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_ATTACH),
- thread, thread->priority,
+ (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_IEL(stack);
+ statep->k_esp = (unsigned long) STACK_IKS(stack);
+#endif
return;
}
assert(new);
assert(old);
+ kpc_off_cpu(old);
+
stack = old->kernel_stack;
if (stack == old->reserved_stack) {
assert(new->reserved_stack);
*/
new->kernel_stack = stack;
- fpu_save_context(old);
-
+ fpu_switch_context(old, new);
+
old->machine.specFlags &= ~OnProc;
new->machine.specFlags |= OnProc;
- PMAP_SWITCH_CONTEXT(old, new, cpu_number());
- act_machine_switch_pcb(new);
+ pmap_switch_context(old, new, cpu_number());
+ act_machine_switch_pcb(old, new);
- KERNEL_DEBUG_CONSTANT(
- MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_HANDOFF)|DBG_FUNC_NONE,
- old->reason, (int)new, old->sched_pri, new->sched_pri, 0);
+#if HYPERVISOR
+ ml_hv_cswitch(old, new);
+#endif
machine_set_current_thread(new);
+ thread_initialize_kernel_state(new);
return;
}
void *
act_thread_csave(void)
{
- kern_return_t kret;
+ kern_return_t kret;
mach_msg_type_number_t val;
- thread_t thr_act = current_thread();
+ thread_t thr_act = current_thread();
- if (thread_is_64bit(thr_act)) {
- struct x86_act_context64 *ic64;
+ if (thread_is_64bit(thr_act)) {
+ struct x86_act_context64 *ic64;
- ic64 = (struct x86_act_context64 *)kalloc(sizeof(struct x86_act_context64));
+ ic64 = (struct x86_act_context64 *)kalloc(sizeof(struct x86_act_context64));
if (ic64 == (struct x86_act_context64 *)NULL)
- return((void *)0);
+ return((void *)0);
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));
+ kfree(ic64, sizeof(struct x86_act_context64));
return((void *)0);
}
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));
+ kfree(ic64, sizeof(struct x86_act_context64));
return((void *)0);
}
return(ic64);
} else {
- struct x86_act_context32 *ic32;
+ struct x86_act_context32 *ic32;
- ic32 = (struct x86_act_context32 *)kalloc(sizeof(struct x86_act_context32));
+ ic32 = (struct x86_act_context32 *)kalloc(sizeof(struct x86_act_context32));
if (ic32 == (struct x86_act_context32 *)NULL)
- return((void *)0);
+ return((void *)0);
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));
+ kfree(ic32, sizeof(struct x86_act_context32));
return((void *)0);
}
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));
+ kfree(ic32, sizeof(struct x86_act_context32));
return((void *)0);
}
kern_return_t kret;
if (ctx == (void *)NULL)
- return;
+ return;
if (thread_is_64bit(thr_act)) {
struct x86_act_context64 *ic64;
kret = machine_thread_set_state(thr_act, x86_SAVED_STATE64,
(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 {
kret = machine_thread_set_state(thr_act, x86_SAVED_STATE32,
(thread_state_t) &ic32->ss, x86_SAVED_STATE32_COUNT);
if (kret == KERN_SUCCESS) {
- kret = machine_thread_set_state(thr_act, x86_FLOAT_STATE32,
+ (void) machine_thread_set_state(thr_act, x86_FLOAT_STATE32,
(thread_state_t) &ic32->fs, x86_FLOAT_STATE32_COUNT);
- if (kret == KERN_SUCCESS && thr_act->machine.pcb->ids)
- machine_thread_set_state(thr_act,
- x86_DEBUG_STATE32,
- (thread_state_t)&ic32->ds,
- x86_DEBUG_STATE32_COUNT);
}
kfree(ic32, sizeof(struct x86_act_context32));
}
{
/* 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
+ * machine_thread_set_state()).
+ */
+void
+copy_debug_state32(
+ x86_debug_state32_t *src,
+ x86_debug_state32_t *target,
+ boolean_t all)
+{
+ if (all) {
+ target->dr4 = src->dr4;
+ target->dr5 = src->dr5;
+ }
+
+ target->dr0 = src->dr0;
+ target->dr1 = src->dr1;
+ target->dr2 = src->dr2;
+ target->dr3 = src->dr3;
+ target->dr6 = src->dr6;
+ target->dr7 = src->dr7;
+}
+
+/*
+ * 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
+ * machine_thread_set_state()).
+ */
+void
+copy_debug_state64(
+ x86_debug_state64_t *src,
+ x86_debug_state64_t *target,
+ boolean_t all)
+{
+ if (all) {
+ target->dr4 = src->dr4;
+ target->dr5 = src->dr5;
+ }
+
+ target->dr0 = src->dr0;
+ target->dr1 = src->dr1;
+ target->dr2 = src->dr2;
+ target->dr3 = src->dr3;
+ target->dr6 = src->dr6;
+ target->dr7 = src->dr7;
+}
projects / apple / xnu.git / blobdiff