/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, unlawful or unlicensed copies of an Apple operating
- * system, or to circumvent, violate, or enable the circumvention or
- * violation of, any terms of an Apple operating system software license
- * agreement.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ 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.
*
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * @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_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/processor.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 */
+#include <i386/seg.h>
+#if HYPERVISOR
+#include <kern/hv_support.h>
+#endif
/*
* Maps state flavor to number of words in the state:
*/
-__private_extern__
unsigned int _MachineStateCount[] = {
- /* FLAVOR_LIST */ 0,
- i386_NEW_THREAD_STATE_COUNT,
- i386_FLOAT_STATE_COUNT,
- i386_ISA_PORT_MAP_STATE_COUNT,
- i386_V86_ASSIST_STATE_COUNT,
- i386_REGS_SEGS_STATE_COUNT,
- i386_THREAD_SYSCALL_STATE_COUNT,
- /* THREAD_STATE_NONE */ 0,
- i386_SAVED_STATE_COUNT,
+ [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_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 */
-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 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);
+
+static void
+get_exception_state64(thread_t thread, x86_exception_state64_t *es);
+
+static void
+get_thread_state32(thread_t thread, x86_thread_state32_t *ts);
+
+static void
+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, void *ts, boolean_t full);
+
+#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);
+ }
-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);
+ if (new->hv_thread_target) {
+ hv_callbacks.dispatch(new->hv_thread_target);
+ }
+}
+#endif
/*
- * consider_machine_collect:
- *
- * Try to collect machine-dependent pages
+ * 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.
*/
-void
-consider_machine_collect(void)
+static boolean_t
+dr7d_is_valid(uint32_t *dr7d)
+{
+ int i;
+ uint32_t mask1, mask2;
+
+ /*
+ * 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 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;
+ }
+ }
+
+ /*
+ * Intel docs have these bits fixed.
+ */
+ *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 (*dr7d & 0x2) {
+ return FALSE;
+ }
+
+ if (*dr7d & (0x2 << 2)) {
+ return FALSE;
+ }
+
+ if (*dr7d & (0x2 << 4)) {
+ return FALSE;
+ }
+
+ if (*dr7d & (0x2 << 6)) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+extern void set_64bit_debug_regs(x86_debug_state64_t *ds);
+
+boolean_t
+debug_state_is_valid32(x86_debug_state32_t *ds)
{
+ if (!dr7d_is_valid(&ds->dr7)) {
+ return FALSE;
+ }
+
+ return TRUE;
}
-void
-consider_machine_adjust(void)
+boolean_t
+debug_state_is_valid64(x86_debug_state64_t *ds)
+{
+ 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) {
+ 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 *new_ids;
+ pcb_t pcb;
+
+ pcb = THREAD_TO_PCB(thread);
+
+ if (debug_state_is_valid32(ds) != TRUE) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (pcb->ids == NULL) {
+ new_ids = zalloc(ids_zone);
+ bzero(new_ids, sizeof *new_ids);
+
+ simple_lock(&pcb->lock, LCK_GRP_NULL);
+ /* make sure it wasn't already alloc()'d elsewhere */
+ if (pcb->ids == NULL) {
+ pcb->ids = new_ids;
+ simple_unlock(&pcb->lock);
+ } else {
+ simple_unlock(&pcb->lock);
+ zfree(ids_zone, new_ids);
+ }
+ }
+
+
+ copy_debug_state32(ds, pcb->ids, FALSE);
+
+ return KERN_SUCCESS;
}
+static kern_return_t
+set_debug_state64(thread_t thread, x86_debug_state64_t *ds)
+{
+ x86_debug_state64_t *new_ids;
+ pcb_t pcb;
+
+ pcb = THREAD_TO_PCB(thread);
+
+ if (debug_state_is_valid64(ds) != TRUE) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ if (pcb->ids == NULL) {
+ new_ids = zalloc(ids_zone);
+ bzero(new_ids, sizeof *new_ids);
+
+#if HYPERVISOR
+ if (thread->hv_thread_target) {
+ hv_callbacks.volatile_state(thread->hv_thread_target,
+ HV_DEBUG_STATE);
+ }
+#endif
+
+ simple_lock(&pcb->lock, LCK_GRP_NULL);
+ /* make sure it wasn't already alloc()'d elsewhere */
+ if (pcb->ids == NULL) {
+ pcb->ids = new_ids;
+ simple_unlock(&pcb->lock);
+ } else {
+ simple_unlock(&pcb->lock);
+ zfree(ids_zone, new_ids);
+ }
+ }
-// DEBUG
-int DEBUG_kldt = 0;
-int DEBUG_uldt = 0;
+ copy_debug_state64(ds, pcb->ids, FALSE);
+
+ return KERN_SUCCESS;
+}
static void
-act_machine_switch_pcb( thread_t new )
+get_debug_state32(thread_t thread, x86_debug_state32_t *ds)
{
- pcb_t pcb = new->machine.pcb;
- int mycpu;
- register iopb_tss_t tss = pcb->ims.io_tss;
- vm_offset_t pcb_stack_top;
- register user_ldt_t uldt = pcb->ims.ldt;
+ x86_debug_state32_t *saved_state;
- assert(new->kernel_stack != 0);
- STACK_IEL(new->kernel_stack)->saved_state =
- &new->machine.pcb->iss;
+ saved_state = thread->machine.ids;
- /*
- * 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.
- * The location depends on V8086 mode. If we are
- * not in V8086 mode, then a trap into the kernel
- * won`t save the v86 segments, so we leave room.
- */
+ if (saved_state) {
+ copy_debug_state32(saved_state, ds, TRUE);
+ } else {
+ bzero(ds, sizeof *ds);
+ }
+}
+
+static void
+get_debug_state64(thread_t thread, x86_debug_state64_t *ds)
+{
+ x86_debug_state64_t *saved_state;
+
+ saved_state = (x86_debug_state64_t *)thread->machine.ids;
- pcb_stack_top = (pcb->iss.efl & EFL_VM)
- ? (int) (&pcb->iss + 1)
- : (int) (&pcb->iss.v86_segs);
-
- mp_disable_preemption();
- mycpu = cpu_number();
-
- if (tss == 0) {
- /*
- * No per-thread IO permissions.
- * Use standard kernel TSS.
- */
- if (!(gdt_desc_p(KERNEL_TSS)->access & ACC_TSS_BUSY))
- set_tr(KERNEL_TSS);
- current_ktss()->esp0 = pcb_stack_top;
- }
- else {
- /*
- * Set the IO permissions. Use this thread`s TSS.
- */
- *gdt_desc_p(USER_TSS)
- = *(struct real_descriptor *)tss->iopb_desc;
- tss->tss.esp0 = pcb_stack_top;
- set_tr(USER_TSS);
- gdt_desc_p(KERNEL_TSS)->access &= ~ ACC_TSS_BUSY;
+ if (saved_state) {
+ copy_debug_state64(saved_state, ds, TRUE);
+ } else {
+ bzero(ds, sizeof *ds);
}
+}
- /*
- * Set the thread`s LDT or LDT entry.
- */
- if (uldt == 0) {
- struct real_descriptor *ldtp;
- /*
- * Use system LDT.
- */
- // Set up the tasks specific ldt entries if extant
- 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;
- set_ldt(KERNEL_LDT);
- }
- else {
- /*
- * Thread has its own LDT. // THIS SHOULD BE REMOVED!!!!
- */
- *gdt_desc_p(USER_LDT) = uldt->desc;
- set_ldt(USER_LDT);
- /*debug*/
- if ((DEBUG_uldt++ % 0x7fff) == 0)
- printf("KERNEL----> setting user ldt");
-
- }
-
- mp_enable_preemption();
- /*
- * Load the floating-point context, if necessary.
- */
- fpu_load_context(pcb);
+/*
+ * consider_machine_collect:
+ *
+ * Try to collect machine-dependent pages
+ */
+void
+consider_machine_collect(void)
+{
+}
+void
+consider_machine_adjust(void)
+{
}
/*
*/
void
machine_load_context(
- thread_t new)
+ thread_t new)
{
- act_machine_switch_pcb(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)
+{
+ 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_t
machine_switch_context(
- thread_t old,
- thread_continue_t continuation,
- thread_t new)
+ thread_t old,
+ 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.)
*/
- {
- int mycpu = cpu_number();
-
- PMAP_SWITCH_CONTEXT(old, new, mycpu)
- }
+ 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);
- old->continuation = NULL;
- return(Switch_context(old, continuation, new));
+ 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)
+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)
{
+#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)
{
-#pragma unused (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.ifps) {
+ (void) fpu_set_fxstate(thread, NULL, x86_FLOAT_STATE64);
+
+ if (thread == current_thread()) {
+ clear_fpu();
+ }
+ }
+
+ if (thread->machine.ids) {
+ zfree(ids_zone, thread->machine.ids);
+ thread->machine.ids = NULL;
+ }
+
+ return KERN_SUCCESS;
+}
- return KERN_SUCCESS;
+uint32_t
+get_eflags_exportmask(void)
+{
+ return EFL_USER_SET;
}
-
-
+
/*
- * act_machine_set_state:
- *
- * Set the status of the specified thread.
+ * x86_SAVED_STATE32 - internal save/restore general register state on 32/64 bit processors
+ * for 32bit tasks only
+ * x86_SAVED_STATE64 - internal save/restore general register state on 64 bit processors
+ * for 64bit tasks only
+ * x86_THREAD_STATE32 - external set/get general register state on 32/64 bit processors
+ * for 32bit tasks only
+ * x86_THREAD_STATE64 - external set/get general register state on 64 bit processors
+ * for 64bit tasks only
+ * x86_SAVED_STATE - external set/get general register state on 32/64 bit processors
+ * for either 32bit or 64bit tasks
+ * x86_FLOAT_STATE32 - internal/external save/restore float and xmm state on 32/64 bit processors
+ * for 32bit tasks only
+ * x86_FLOAT_STATE64 - internal/external save/restore float and xmm state on 64 bit processors
+ * for 64bit tasks only
+ * x86_FLOAT_STATE - external save/restore float and xmm state on 32/64 bit processors
+ * for either 32bit or 64bit tasks
+ * x86_EXCEPTION_STATE32 - external get exception state on 32/64 bit processors
+ * for 32bit tasks only
+ * x86_EXCEPTION_STATE64 - external get exception state on 64 bit processors
+ * for 64bit tasks only
+ * x86_EXCEPTION_STATE - external get exception state on 323/64 bit processors
+ * for either 32bit or 64bit tasks
*/
-kern_return_t
-machine_thread_set_state(
- thread_t thr_act,
- thread_flavor_t flavor,
- thread_state_t tstate,
- mach_msg_type_number_t count)
+
+static void
+get_exception_state64(thread_t thread, x86_exception_state64_t *es)
{
- int kernel_act = 0;
+ x86_saved_state64_t *saved_state;
- switch (flavor) {
- case THREAD_SYSCALL_STATE:
- {
- register struct thread_syscall_state *state;
- register struct i386_saved_state *saved_state = USER_REGS(thr_act);
+ saved_state = USER_REGS64(thread);
- state = (struct thread_syscall_state *) tstate;
- saved_state->eax = state->eax;
- saved_state->edx = state->edx;
- if (kernel_act)
- saved_state->efl = state->efl;
- else
- saved_state->efl = (state->efl & ~EFL_USER_CLEAR) | EFL_USER_SET;
- saved_state->eip = state->eip;
- saved_state->uesp = state->esp;
- break;
- }
+ 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;
+
+ 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;
+
+ 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->edx = ts->edx;
+ saved_state->edi = ts->edi;
+ saved_state->esi = ts->esi;
+ saved_state->ebp = ts->ebp;
+ 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;
+ 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;
+
+ /*
+ * If the trace trap bit is being set,
+ * ensure that the user returns via iret
+ * - which is signaled thusly:
+ */
+ if ((saved_state->efl & EFL_TF) && saved_state->cs == SYSENTER_CS) {
+ saved_state->cs = SYSENTER_TF_CS;
+ }
+
+ return KERN_SUCCESS;
+}
+
+static int
+set_thread_state64(thread_t thread, void *state, int full)
+{
+ 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;
+ }
+
+ saved_state->r8 = ts->r8;
+ saved_state->r9 = ts->r9;
+ saved_state->r10 = ts->r10;
+ saved_state->r11 = ts->r11;
+ saved_state->r12 = ts->r12;
+ saved_state->r13 = ts->r13;
+ saved_state->r14 = ts->r14;
+ saved_state->r15 = ts->r15;
+ saved_state->rax = ts->rax;
+ saved_state->rbx = ts->rbx;
+ saved_state->rcx = ts->rcx;
+ saved_state->rdx = ts->rdx;
+ saved_state->rdi = ts->rdi;
+ saved_state->rsi = ts->rsi;
+ saved_state->rbp = ts->rbp;
+ saved_state->isf.rsp = ts->rsp;
+ saved_state->isf.rflags = (ts->rflags & ~EFL_USER_CLEAR) | EFL_USER_SET;
+ saved_state->isf.rip = ts->rip;
+
+ 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;
+}
+
+
+
+static void
+get_thread_state32(thread_t thread, x86_thread_state32_t *ts)
+{
+ x86_saved_state32_t *saved_state;
+
+ pal_register_cache_state(thread, VALID);
+
+ saved_state = USER_REGS32(thread);
+
+ ts->eax = saved_state->eax;
+ ts->ebx = saved_state->ebx;
+ ts->ecx = saved_state->ecx;
+ ts->edx = saved_state->edx;
+ ts->edi = saved_state->edi;
+ ts->esi = saved_state->esi;
+ ts->ebp = saved_state->ebp;
+ ts->esp = saved_state->uesp;
+ ts->eflags = saved_state->efl;
+ ts->eip = saved_state->eip;
+ ts->cs = saved_state->cs;
+ ts->ss = saved_state->ss;
+ ts->ds = saved_state->ds;
+ ts->es = saved_state->es;
+ ts->fs = saved_state->fs;
+ ts->gs = saved_state->gs;
+}
+
+
+static void
+get_thread_state64(thread_t thread, void *state, boolean_t full)
+{
+ 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);
+
+ saved_state = USER_REGS64(thread);
+
+ ts->r8 = saved_state->r8;
+ ts->r9 = saved_state->r9;
+ ts->r10 = saved_state->r10;
+ ts->r11 = saved_state->r11;
+ ts->r12 = saved_state->r12;
+ ts->r13 = saved_state->r13;
+ ts->r14 = saved_state->r14;
+ ts->r15 = saved_state->r15;
+ ts->rax = saved_state->rax;
+ ts->rbx = saved_state->rbx;
+ ts->rcx = saved_state->rcx;
+ ts->rdx = saved_state->rdx;
+ ts->rdi = saved_state->rdi;
+ ts->rsi = saved_state->rsi;
+ ts->rbp = saved_state->rbp;
+ ts->rsp = saved_state->isf.rsp;
+ 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)
+{
+ // No conversion to userspace representation on this platform
+ return KERN_SUCCESS;
+}
- case i386_SAVED_STATE:
- {
- register struct i386_saved_state *state;
- register struct i386_saved_state *saved_state;
+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)
+{
+ // 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)
+{
+ // 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)
+{
+ // No conversion from userspace representation on this platform
+ return KERN_SUCCESS;
+}
+
+/*
+ * act_machine_set_state:
+ *
+ * Set the status of the specified thread.
+ */
+
+kern_return_t
+machine_thread_set_state(
+ thread_t thr_act,
+ thread_flavor_t flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t count)
+{
+ switch (flavor) {
+ 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;
+ }
+
+ 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)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ pal_register_cache_state(thr_act, DIRTY);
+
+ saved_state = USER_REGS32(thr_act);
+
+ /*
+ * General registers
+ */
+ saved_state->edi = state->edi;
+ saved_state->esi = state->esi;
+ saved_state->ebp = state->ebp;
+ saved_state->uesp = state->uesp;
+ saved_state->ebx = state->ebx;
+ saved_state->edx = state->edx;
+ saved_state->ecx = state->ecx;
+ saved_state->eax = state->eax;
+ saved_state->eip = state->eip;
+
+ saved_state->efl = (state->efl & ~EFL_USER_CLEAR) | EFL_USER_SET;
+
+ /*
+ * If the trace trap bit is being set,
+ * ensure that the user returns via iret
+ * - which is signaled thusly:
+ */
+ if ((saved_state->efl & EFL_TF) && state->cs == SYSENTER_CS) {
+ state->cs = SYSENTER_TF_CS;
+ }
+
+ /*
+ * User setting segment registers.
+ * Code and stack selectors have already been
+ * checked. Others will be reset by 'iret'
+ * if they are not valid.
+ */
+ saved_state->cs = state->cs;
+ saved_state->ss = state->ss;
+ saved_state->ds = state->ds;
+ saved_state->es = state->es;
+ saved_state->fs = state->fs;
+ saved_state->gs = state->gs;
+
+ break;
+ }
+
+ 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 (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ state = (x86_saved_state64_t *) tstate;
+
+ /* 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 */
+ if (!IS_USERADDR64_CANONICAL(state->isf.rsp) ||
+ !IS_USERADDR64_CANONICAL(state->isf.rip)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ pal_register_cache_state(thr_act, DIRTY);
+
+ saved_state = USER_REGS64(thr_act);
+
+ /*
+ * General registers
+ */
+ saved_state->r8 = state->r8;
+ saved_state->r9 = state->r9;
+ saved_state->r10 = state->r10;
+ saved_state->r11 = state->r11;
+ saved_state->r12 = state->r12;
+ saved_state->r13 = state->r13;
+ saved_state->r14 = state->r14;
+ saved_state->r15 = state->r15;
+ saved_state->rdi = state->rdi;
+ saved_state->rsi = state->rsi;
+ saved_state->rbp = state->rbp;
+ saved_state->rbx = state->rbx;
+ saved_state->rdx = state->rdx;
+ saved_state->rcx = state->rcx;
+ saved_state->rax = state->rax;
+ saved_state->isf.rsp = state->isf.rsp;
+ saved_state->isf.rip = state->isf.rip;
+
+ 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.ss = state->isf.ss;
+ saved_state->fs = state->fs;
+ saved_state->gs = state->gs;
+
+ break;
+ }
+
+ case x86_FLOAT_STATE32:
+ 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;
+ }
+
+ return fpu_set_fxstate(thr_act, tstate, flavor);
+ }
+
+ case x86_FLOAT_STATE64:
+ 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;
+ }
+
+ 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;
+ }
+
+ state = (x86_float_state_t *)tstate;
+ if (state->fsh.flavor == x86_FLOAT_STATE64 && state->fsh.count == x86_FLOAT_STATE64_COUNT &&
+ thread_is_64bit_addr(thr_act)) {
+ 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_addr(thr_act)) {
+ return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs32, x86_FLOAT_STATE32);
+ }
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ case x86_AVX_STATE:
+ case x86_AVX512_STATE:
+ {
+ x86_avx_state_t *state;
+
+ 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] &&
+ thread_is_64bit_addr(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_addr(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_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ return set_thread_state32(thr_act, (x86_thread_state32_t *)tstate);
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ 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, 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)) {
+ return set_thread_state32(thr_act, &state->uts.ts32);
+ } 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;
+ }
+
+ state = (x86_debug_state32_t *)tstate;
+
+ ret = set_debug_state32(thr_act, state);
+
+ return ret;
+ }
+ case x86_DEBUG_STATE64:
+ {
+ x86_debug_state64_t *state;
+ kern_return_t ret;
+
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ state = (x86_debug_state64_t *)tstate;
+
+ ret = set_debug_state64(thr_act, state);
+
+ return ret;
+ }
+ case x86_DEBUG_STATE:
+ {
+ x86_debug_state_t *state;
+ kern_return_t ret = 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)) {
+ 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);
+ }
+ return ret;
+ }
+ default:
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ 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_getstatus:
+ *
+ * Get the status of the specified thread.
+ */
+
+kern_return_t
+machine_thread_get_state(
+ thread_t thr_act,
+ thread_flavor_t flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t *count)
+{
+ switch (flavor) {
+ case THREAD_STATE_FLAVOR_LIST:
+ {
+ if (*count < 3) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ 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;
+ }
+
+ 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;
+
+ *count = 7;
+ break;
+ }
+
+ 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);
+
+ /*
+ * 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_STATE32_COUNT;
+ break;
+ }
+
+ 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 (!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;
+ }
+
+ 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;
+ }
+
+ 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;
+
+ if (*count < x86_FLOAT_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ state = (x86_float_state_t *)tstate;
+
+ /*
+ * 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;
+
+ 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, x86_FLOAT_STATE32);
+ }
+ *count = x86_FLOAT_STATE_COUNT;
+
+ return kret;
+ }
+
+ 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;
+ }
+
+ *count = _MachineStateCount[flavor];
+
+ return fpu_get_fxstate(thr_act, tstate, flavor);
+ }
+
+ 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;
+ }
+
+ *count = _MachineStateCount[flavor];
+
+ return fpu_get_fxstate(thr_act, tstate, flavor);
+ }
+
+ 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;
+ }
+
+ *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 */
+ 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 x86_THREAD_STATE32:
+ {
+ if (*count < x86_THREAD_STATE32_COUNT) {
+ 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;
+ }
+
+ if (!thread_is_64bit_addr(thr_act)) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ *count = x86_THREAD_STATE64_COUNT;
+
+ get_thread_state64(thr_act, tstate, FALSE);
+ break;
+ }
+
+ 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;
+ }
+
+ *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;
+
+ bzero((char *)state, sizeof(x86_thread_state_t));
+
+ if (thread_is_64bit_addr(thr_act)) {
+ state->tsh.flavor = x86_THREAD_STATE64;
+ state->tsh.count = x86_THREAD_STATE64_COUNT;
+
+ 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);
+ }
+ *count = x86_THREAD_STATE_COUNT;
+
+ break;
+ }
+
+
+ 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;
+ }
+
+ *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;
+ }
+
+ 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;
+ }
+
+ *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;
+ }
+
+ case x86_EXCEPTION_STATE:
+ {
+ x86_exception_state_t *state;
+
+ if (*count < x86_EXCEPTION_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
+
+ state = (x86_exception_state_t *)tstate;
+
+ bzero((char *)state, sizeof(x86_exception_state_t));
+
+ if (thread_is_64bit_addr(thr_act)) {
+ state->esh.flavor = x86_EXCEPTION_STATE64;
+ state->esh.count = x86_EXCEPTION_STATE64_COUNT;
+
+ 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);
+ }
+ *count = x86_EXCEPTION_STATE_COUNT;
+
+ break;
+ }
+ case x86_DEBUG_STATE32:
+ {
+ if (*count < x86_DEBUG_STATE32_COUNT) {
+ 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);
+
+ *count = x86_DEBUG_STATE32_COUNT;
+
+ break;
+ }
+ 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;
+ }
+
+ get_debug_state64(thr_act, (x86_debug_state64_t *)tstate);
+
+ *count = x86_DEBUG_STATE64_COUNT;
+
+ break;
+ }
+ case x86_DEBUG_STATE:
+ {
+ x86_debug_state_t *state;
- if (count < i386_SAVED_STATE_COUNT) {
- return(KERN_INVALID_ARGUMENT);
+ if (*count < x86_DEBUG_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
}
- state = (struct i386_saved_state *) tstate;
+ state = (x86_debug_state_t *)tstate;
- /* Check segment selectors are safe */
- if (!kernel_act &&
- !valid_user_segment_selectors(state->cs,
- state->ss,
- state->ds,
- state->es,
- state->fs,
- state->gs))
- return KERN_INVALID_ARGUMENT;
-
- saved_state = USER_REGS(thr_act);
+ bzero(state, sizeof *state);
- /*
- * General registers
- */
- saved_state->edi = state->edi;
- saved_state->esi = state->esi;
- saved_state->ebp = state->ebp;
- saved_state->uesp = state->uesp;
- saved_state->ebx = state->ebx;
- saved_state->edx = state->edx;
- saved_state->ecx = state->ecx;
- saved_state->eax = state->eax;
- saved_state->eip = state->eip;
- if (kernel_act)
- saved_state->efl = state->efl;
- else
- saved_state->efl = (state->efl & ~EFL_USER_CLEAR)
- | EFL_USER_SET;
+ if (thread_is_64bit_addr(thr_act)) {
+ state->dsh.flavor = x86_DEBUG_STATE64;
+ state->dsh.count = x86_DEBUG_STATE64_COUNT;
- /*
- * Segment registers. Set differently in V8086 mode.
- */
- if (state->efl & EFL_VM) {
- /*
- * Set V8086 mode segment registers.
- */
- saved_state->cs = state->cs & 0xffff;
- saved_state->ss = state->ss & 0xffff;
- saved_state->v86_segs.v86_ds = state->ds & 0xffff;
- saved_state->v86_segs.v86_es = state->es & 0xffff;
- saved_state->v86_segs.v86_fs = state->fs & 0xffff;
- saved_state->v86_segs.v86_gs = state->gs & 0xffff;
-
- /*
- * Zero protected mode segment registers.
- */
- saved_state->ds = 0;
- saved_state->es = 0;
- saved_state->fs = 0;
- saved_state->gs = 0;
-
- if (thr_act->machine.pcb->ims.v86s.int_table) {
- /*
- * Hardware assist on.
- */
- thr_act->machine.pcb->ims.v86s.flags =
- state->efl & (EFL_TF | EFL_IF);
- }
- }
- else if (kernel_act) {
- /*
- * 386 mode. Set segment registers for flat
- * 32-bit address space.
- */
- saved_state->cs = KERNEL_CS;
- saved_state->ss = KERNEL_DS;
- saved_state->ds = KERNEL_DS;
- saved_state->es = KERNEL_DS;
- saved_state->fs = KERNEL_DS;
- saved_state->gs = CPU_DATA_GS;
- }
- else {
- /*
- * User setting segment registers.
- * Code and stack selectors have already been
- * checked. Others will be reset by 'iret'
- * if they are not valid.
- */
- saved_state->cs = state->cs;
- saved_state->ss = state->ss;
- saved_state->ds = state->ds;
- saved_state->es = state->es;
- saved_state->fs = state->fs;
- saved_state->gs = state->gs;
+ get_debug_state64(thr_act, &state->uds.ds64);
+ } else {
+ state->dsh.flavor = x86_DEBUG_STATE32;
+ state->dsh.count = x86_DEBUG_STATE32_COUNT;
+
+ get_debug_state32(thr_act, &state->uds.ds32);
}
+ *count = x86_DEBUG_STATE_COUNT;
break;
- }
-
- case i386_NEW_THREAD_STATE:
- case i386_REGS_SEGS_STATE:
- {
- register struct i386_new_thread_state *state;
- register struct i386_saved_state *saved_state;
+ }
- if (count < i386_NEW_THREAD_STATE_COUNT) {
- return(KERN_INVALID_ARGUMENT);
+ case x86_PAGEIN_STATE:
+ {
+ if (*count < x86_PAGEIN_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
}
- state = (struct i386_new_thread_state *) tstate;
+ x86_pagein_state_t *state = (void *)tstate;
- if (flavor == i386_REGS_SEGS_STATE) {
- /*
- * Code and stack selectors must not be null,
- * and must have user protection levels.
- * Only the low 16 bits are valid.
- */
- state->cs &= 0xffff;
- state->ss &= 0xffff;
- state->ds &= 0xffff;
- state->es &= 0xffff;
- state->fs &= 0xffff;
- state->gs &= 0xffff;
+ state->__pagein_error = thr_act->t_pagein_error;
+
+ *count = x86_PAGEIN_STATE_COUNT;
+ break;
+ }
- if (!kernel_act &&
- !valid_user_segment_selectors(state->cs,
- state->ss,
- state->ds,
- state->es,
- state->fs,
- state->gs))
+ case x86_INSTRUCTION_STATE:
+ {
+ if (*count < x86_INSTRUCTION_STATE_COUNT) {
return KERN_INVALID_ARGUMENT;
}
- saved_state = USER_REGS(thr_act);
-
- /*
- * General registers
- */
- saved_state->edi = state->edi;
- saved_state->esi = state->esi;
- saved_state->ebp = state->ebp;
- saved_state->uesp = state->uesp;
- saved_state->ebx = state->ebx;
- saved_state->edx = state->edx;
- saved_state->ecx = state->ecx;
- saved_state->eax = state->eax;
- saved_state->eip = state->eip;
- if (kernel_act)
- saved_state->efl = state->efl;
- else
- saved_state->efl = (state->efl & ~EFL_USER_CLEAR)
- | EFL_USER_SET;
+ x86_instruction_state_t *state = (void *)tstate;
+ x86_instruction_state_t *src_state = THREAD_TO_PCB(thr_act)->insn_state;
- /*
- * Segment registers. Set differently in V8086 mode.
- */
- if (state->efl & EFL_VM) {
- /*
- * Set V8086 mode segment registers.
- */
- saved_state->cs = state->cs & 0xffff;
- saved_state->ss = state->ss & 0xffff;
- saved_state->v86_segs.v86_ds = state->ds & 0xffff;
- saved_state->v86_segs.v86_es = state->es & 0xffff;
- saved_state->v86_segs.v86_fs = state->fs & 0xffff;
- saved_state->v86_segs.v86_gs = state->gs & 0xffff;
-
- /*
- * Zero protected mode segment registers.
- */
- saved_state->ds = 0;
- saved_state->es = 0;
- saved_state->fs = 0;
- saved_state->gs = 0;
-
- if (thr_act->machine.pcb->ims.v86s.int_table) {
- /*
- * Hardware assist on.
- */
- thr_act->machine.pcb->ims.v86s.flags =
- state->efl & (EFL_TF | EFL_IF);
- }
- }
- else if (flavor == i386_NEW_THREAD_STATE && kernel_act) {
- /*
- * 386 mode. Set segment registers for flat
- * 32-bit address space.
- */
- saved_state->cs = KERNEL_CS;
- saved_state->ss = KERNEL_DS;
- saved_state->ds = KERNEL_DS;
- saved_state->es = KERNEL_DS;
- saved_state->fs = KERNEL_DS;
- saved_state->gs = CPU_DATA_GS;
- }
- else {
- /*
- * User setting segment registers.
- * Code and stack selectors have already been
- * checked. Others will be reset by 'iret'
- * if they are not valid.
- */
- saved_state->cs = state->cs;
- saved_state->ss = state->ss;
- saved_state->ds = state->ds;
- saved_state->es = state->es;
- saved_state->fs = state->fs;
- saved_state->gs = state->gs;
+ 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 i386_FLOAT_STATE: {
- if (count < i386_old_FLOAT_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
- if (count < i386_FLOAT_STATE_COUNT)
- return fpu_set_state(thr_act,(struct i386_float_state*)tstate);
- else return fpu_set_fxstate(thr_act,(struct i386_float_state*)tstate);
- }
-
- /*
- * Temporary - replace by i386_io_map
- */
- case i386_ISA_PORT_MAP_STATE: {
- if (count < i386_ISA_PORT_MAP_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- break;
- }
-
- case i386_V86_ASSIST_STATE:
- {
- register struct i386_v86_assist_state *state;
- vm_offset_t int_table;
- int int_count;
+ }
- if (count < i386_V86_ASSIST_STATE_COUNT)
- return KERN_INVALID_ARGUMENT;
+ case x86_LAST_BRANCH_STATE:
+ {
+ boolean_t istate;
- state = (struct i386_v86_assist_state *) tstate;
- int_table = state->int_table;
- int_count = state->int_count;
+ if (!last_branch_support_enabled || *count < x86_LAST_BRANCH_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- if (int_table >= VM_MAX_ADDRESS ||
- int_table +
- int_count * sizeof(struct v86_interrupt_table)
- > VM_MAX_ADDRESS)
- 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);
- thr_act->machine.pcb->ims.v86s.int_table = int_table;
- thr_act->machine.pcb->ims.v86s.int_count = int_count;
+ 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;
+ }
- thr_act->machine.pcb->ims.v86s.flags =
- USER_REGS(thr_act)->efl & (EFL_TF | EFL_IF);
+ *count = x86_LAST_BRANCH_STATE_COUNT;
break;
- }
-
- case i386_THREAD_STATE: {
- struct i386_saved_state *saved_state;
- i386_thread_state_t *state25;
-
- saved_state = USER_REGS(thr_act);
- state25 = (i386_thread_state_t *)tstate;
-
- saved_state->eax = state25->eax;
- saved_state->ebx = state25->ebx;
- saved_state->ecx = state25->ecx;
- saved_state->edx = state25->edx;
- saved_state->edi = state25->edi;
- saved_state->esi = state25->esi;
- saved_state->ebp = state25->ebp;
- saved_state->uesp = state25->esp;
- saved_state->efl = (state25->eflags & ~EFL_USER_CLEAR)
- | EFL_USER_SET;
- saved_state->eip = state25->eip;
- saved_state->cs = USER_CS; /* FIXME? */
- saved_state->ss = USER_DS;
- saved_state->ds = USER_DS;
- saved_state->es = USER_DS;
- saved_state->fs = state25->fs;
- saved_state->gs = state25->gs;
}
- break;
- default:
- return(KERN_INVALID_ARGUMENT);
+ default:
+ return KERN_INVALID_ARGUMENT;
}
- return(KERN_SUCCESS);
+ return KERN_SUCCESS;
}
-/*
- * thread_getstatus:
- *
- * Get the status of the specified thread.
- */
-
-
kern_return_t
-machine_thread_get_state(
- thread_t thr_act,
- thread_flavor_t flavor,
- thread_state_t tstate,
- mach_msg_type_number_t *count)
+machine_thread_get_kern_state(
+ thread_t thread,
+ thread_flavor_t flavor,
+ thread_state_t tstate,
+ mach_msg_type_number_t *count)
{
- switch (flavor) {
-
- case i386_SAVED_STATE:
- {
- register struct i386_saved_state *state;
- register struct i386_saved_state *saved_state;
-
- if (*count < i386_SAVED_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (struct i386_saved_state *) tstate;
- saved_state = USER_REGS(thr_act);
-
- /*
- * First, copy everything:
- */
- *state = *saved_state;
-
- if (saved_state->efl & EFL_VM) {
- /*
- * V8086 mode.
- */
- state->ds = saved_state->v86_segs.v86_ds & 0xffff;
- state->es = saved_state->v86_segs.v86_es & 0xffff;
- state->fs = saved_state->v86_segs.v86_fs & 0xffff;
- state->gs = saved_state->v86_segs.v86_gs & 0xffff;
+ x86_saved_state_t *int_state = current_cpu_datap()->cpu_int_state;
- if (thr_act->machine.pcb->ims.v86s.int_table) {
- /*
- * Hardware assist on
- */
- if ((thr_act->machine.pcb->ims.v86s.flags &
- (EFL_IF|V86_IF_PENDING)) == 0)
- state->efl &= ~EFL_IF;
- }
- }
- else {
- /*
- * 386 mode.
- */
- 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 = i386_SAVED_STATE_COUNT;
- break;
- }
+ /*
+ * This works only for an interrupted kernel thread
+ */
+ if (thread != current_thread() || int_state == NULL) {
+ return KERN_FAILURE;
+ }
- case i386_NEW_THREAD_STATE:
- case i386_REGS_SEGS_STATE:
- {
- register struct i386_new_thread_state *state;
- register struct i386_saved_state *saved_state;
+ switch (flavor) {
+ case x86_THREAD_STATE32: {
+ x86_thread_state32_t *state;
+ x86_saved_state32_t *saved_state;
- if (*count < i386_NEW_THREAD_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
+ if (!is_saved_state32(int_state) ||
+ *count < x86_THREAD_STATE32_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- state = (struct i386_new_thread_state *) tstate;
- saved_state = USER_REGS(thr_act);
+ state = (x86_thread_state32_t *) tstate;
+ 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->ebx = saved_state->ebx;
- state->edx = saved_state->edx;
- state->ecx = saved_state->ecx;
- state->eax = saved_state->eax;
+ state->esp = saved_state->uesp;
+ state->eflags = saved_state->efl;
state->eip = saved_state->eip;
- state->efl = saved_state->efl;
- state->uesp = saved_state->uesp;
-
state->cs = saved_state->cs;
state->ss = saved_state->ss;
- if (saved_state->efl & EFL_VM) {
- /*
- * V8086 mode.
- */
- state->ds = saved_state->v86_segs.v86_ds & 0xffff;
- state->es = saved_state->v86_segs.v86_es & 0xffff;
- state->fs = saved_state->v86_segs.v86_fs & 0xffff;
- state->gs = saved_state->v86_segs.v86_gs & 0xffff;
-
- if (thr_act->machine.pcb->ims.v86s.int_table) {
- /*
- * Hardware assist on
- */
- if ((thr_act->machine.pcb->ims.v86s.flags &
- (EFL_IF|V86_IF_PENDING)) == 0)
- state->efl &= ~EFL_IF;
- }
- }
- else {
- /*
- * 386 mode.
- */
- 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 = i386_NEW_THREAD_STATE_COUNT;
- break;
- }
-
- case THREAD_SYSCALL_STATE:
- {
- register struct thread_syscall_state *state;
- register struct i386_saved_state *saved_state = USER_REGS(thr_act);
+ state->ds = saved_state->ds & 0xffff;
+ state->es = saved_state->es & 0xffff;
+ state->fs = saved_state->fs & 0xffff;
+ state->gs = saved_state->gs & 0xffff;
- state = (struct thread_syscall_state *) tstate;
- state->eax = saved_state->eax;
- state->edx = saved_state->edx;
- state->efl = saved_state->efl;
- state->eip = saved_state->eip;
- state->esp = saved_state->uesp;
- *count = i386_THREAD_SYSCALL_STATE_COUNT;
- break;
- }
+ *count = x86_THREAD_STATE32_COUNT;
- case THREAD_STATE_FLAVOR_LIST:
- if (*count < 5)
- return (KERN_INVALID_ARGUMENT);
- tstate[0] = i386_NEW_THREAD_STATE;
- tstate[1] = i386_FLOAT_STATE;
- tstate[2] = i386_ISA_PORT_MAP_STATE;
- tstate[3] = i386_V86_ASSIST_STATE;
- tstate[4] = THREAD_SYSCALL_STATE;
- *count = 5;
- break;
+ return KERN_SUCCESS;
+ }
- case i386_FLOAT_STATE: {
- if (*count < i386_old_FLOAT_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
- if (*count< i386_FLOAT_STATE_COUNT) {
- *count = i386_old_FLOAT_STATE_COUNT;
- return fpu_get_state(thr_act,(struct i386_float_state *)tstate);
- } else {
- *count = i386_FLOAT_STATE_COUNT;
- return fpu_get_fxstate(thr_act,(struct i386_float_state *)tstate);
- }
- }
-
- /*
- * Temporary - replace by i386_io_map
- */
- case i386_ISA_PORT_MAP_STATE: {
- register struct i386_isa_port_map_state *state;
- register iopb_tss_t tss;
-
- if (*count < i386_ISA_PORT_MAP_STATE_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- state = (struct i386_isa_port_map_state *) tstate;
- tss = thr_act->machine.pcb->ims.io_tss;
-
- if (tss == 0) {
- unsigned int i;
-
- /*
- * The thread has no ktss, so no IO permissions.
- */
-
- for (i = 0; i < sizeof state->pm; i++)
- state->pm[i] = 0xff;
- } else {
- /*
- * The thread has its own ktss.
- */
+ case x86_THREAD_STATE64: {
+ x86_thread_state64_t *state;
+ x86_saved_state64_t *saved_state;
- bcopy((char *) tss->bitmap,
- (char *) state->pm,
- sizeof state->pm);
+ if (!is_saved_state64(int_state) ||
+ *count < x86_THREAD_STATE64_COUNT) {
+ return KERN_INVALID_ARGUMENT;
}
- *count = i386_ISA_PORT_MAP_STATE_COUNT;
- break;
- }
+ state = (x86_thread_state64_t *) tstate;
- case i386_V86_ASSIST_STATE:
- {
- register struct i386_v86_assist_state *state;
+ 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;
+
+ return KERN_SUCCESS;
+ }
- if (*count < i386_V86_ASSIST_STATE_COUNT)
- return KERN_INVALID_ARGUMENT;
+ case x86_THREAD_STATE: {
+ x86_thread_state_t *state = NULL;
- state = (struct i386_v86_assist_state *) tstate;
- state->int_table = thr_act->machine.pcb->ims.v86s.int_table;
- state->int_count = thr_act->machine.pcb->ims.v86s.int_count;
+ if (*count < x86_THREAD_STATE_COUNT) {
+ return KERN_INVALID_ARGUMENT;
+ }
- *count = i386_V86_ASSIST_STATE_COUNT;
- break;
- }
-
- case i386_THREAD_STATE: {
- struct i386_saved_state *saved_state;
- i386_thread_state_t *state;
-
- saved_state = USER_REGS(thr_act);
- state = (i386_thread_state_t *)tstate;
-
- 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;
- state->es = saved_state->es;
- state->fs = saved_state->fs;
- state->gs = saved_state->gs;
- break;
- }
+ state = (x86_thread_state_t *) tstate;
- default:
- return(KERN_INVALID_ARGUMENT);
- }
+ if (is_saved_state32(int_state)) {
+ x86_saved_state32_t *saved_state = saved_state32(int_state);
- return(KERN_SUCCESS);
-}
+ state->tsh.flavor = x86_THREAD_STATE32;
+ state->tsh.count = x86_THREAD_STATE32_COUNT;
-/*
- * Initialize the machine-dependent state for a new thread.
- */
-kern_return_t
-machine_thread_create(
- thread_t thread,
- __unused task_t task)
-{
- pcb_t pcb = &thread->machine.xxx_pcb;
+ /*
+ * 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.edx = saved_state->edx;
+ state->uts.ts32.edi = saved_state->edi;
+ state->uts.ts32.esi = saved_state->esi;
+ state->uts.ts32.ebp = saved_state->ebp;
+ state->uts.ts32.esp = saved_state->uesp;
+ state->uts.ts32.eflags = saved_state->efl;
+ state->uts.ts32.eip = saved_state->eip;
+ state->uts.ts32.cs = saved_state->cs;
+ state->uts.ts32.ss = saved_state->ss;
+ state->uts.ts32.ds = saved_state->ds & 0xffff;
+ state->uts.ts32.es = saved_state->es & 0xffff;
+ state->uts.ts32.fs = saved_state->fs & 0xffff;
+ state->uts.ts32.gs = saved_state->gs & 0xffff;
+ } 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;
+
+ /*
+ * 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 {
+ panic("unknown thread state");
+ }
- thread->machine.pcb = pcb;
+ *count = x86_THREAD_STATE_COUNT;
+ return KERN_SUCCESS;
+ }
+ }
+ return KERN_FAILURE;
+}
- simple_lock_init(&pcb->lock, 0);
+void
+machine_thread_switch_addrmode(thread_t thread)
+{
/*
- * Guarantee that the bootstrapped thread will be in user
- * mode.
+ * We don't want to be preempted until we're done
+ * - particularly if we're switching the current thread
*/
- pcb->iss.cs = USER_CS;
- pcb->iss.ss = USER_DS;
- pcb->iss.ds = USER_DS;
- pcb->iss.es = USER_DS;
- pcb->iss.fs = USER_DS;
- pcb->iss.gs = USER_DS;
- pcb->iss.efl = EFL_USER_SET;
- {
- struct real_descriptor *ldtp;
- ldtp = (struct real_descriptor *)ldt;
- pcb->cthread_desc = ldtp[sel_idx(USER_DS)];
- pcb->uldt_desc = ldtp[sel_idx(USER_DS)];
- pcb->uldt_selector = 0;
- }
+ disable_preemption();
/*
- * Allocate a kernel stack per thread.
+ * Reset the state saveareas. As we're resetting, we anticipate no
+ * memory allocations in this path.
*/
- stack_alloc(thread);
+ machine_thread_create(thread, thread->task);
- return(KERN_SUCCESS);
-}
+ /* Adjust FPU state */
+ fpu_switch_addrmode(thread, task_has_64Bit_addr(thread->task));
-/*
- * 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->ims.io_tss != 0)
- iopb_destroy(pcb->ims.io_tss);
- if (pcb->ims.ifps != 0)
- fpu_free(pcb->ims.ifps);
- if (pcb->ims.ldt != 0)
- user_ldt_free(pcb->ims.ldt);
- thread->machine.pcb = (pcb_t)0;
+ /* If we're switching ourselves, reset the pcb addresses etc. */
+ 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();
}
+
+
/*
* This is used to set the current thr_act/thread
* when starting up a new processor
*/
void
-machine_set_current_thread( thread_t thread )
-{
- mp_disable_preemption();
-
- current_cpu_datap()->cpu_active_thread = thread;
- current_cpu_datap()->cpu_active_kloaded = THREAD_NULL;
-
- mp_enable_preemption();
-}
-
-void
-machine_thread_terminate_self(void)
-{
-}
-
-void
-act_machine_return(int code)
+machine_set_current_thread(thread_t thread)
{
- /*
- * 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);
+ current_cpu_datap()->cpu_active_thread = thread;
}
machine_thread_init(void)
{
fpu_module_init();
- iopb_init();
}
/*
- * Some routines for debugging activation code
+ * machine_thread_template_init: Initialize machine-specific portion of
+ * the thread template.
*/
-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)
+machine_thread_template_init(thread_t thr_template)
{
- if (thr_act->machine.pcb) {
- register struct i386_saved_state *ssp = USER_REGS(thr_act);
- /* 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);
- }
+ assert(fpu_default != UNDEFINED);
+
+ THREAD_TO_PCB(thr_template)->xstate = fpu_default;
}
-int
-dump_act(thread_t thr_act)
+user_addr_t
+get_useraddr(void)
{
- 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);
+ thread_t thr_act = current_thread();
- 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 (thread_is_64bit_addr(thr_act)) {
+ x86_saved_state64_t *iss64;
- 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);
- }
+ iss64 = USER_REGS64(thr_act);
- dump_handlers(thr_act);
- dump_regs(thr_act);
- return((int)thr_act);
-}
+ return iss64->isf.rip;
+ } else {
+ x86_saved_state32_t *iss32;
-user_addr_t
-get_useraddr(void)
-{
-
- thread_t thr_act = current_thread();
-
- if (thr_act->machine.pcb)
- return(thr_act->machine.pcb->iss.eip);
- else
- return(0);
+ iss32 = USER_REGS32(thr_act);
+ return iss32->eip;
+ }
}
/*
vm_offset_t
machine_stack_detach(thread_t thread)
{
- vm_offset_t stack;
+ 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);
- KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_DETACH),
- thread, thread->priority,
- thread->sched_pri, 0,
- 0);
+ stack = thread->kernel_stack;
+ thread->kernel_stack = 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 i386_kernel_state *statep;
+ struct x86_kernel_state *statep;
- KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_ATTACH),
- thread, thread->priority,
- thread->sched_pri, 0, 0);
+ KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_ATTACH),
+ (uintptr_t)thread_tid(thread), thread->priority,
+ thread->sched_pri, 0, 0);
- assert(stack);
- statep = STACK_IKS(stack);
- thread->kernel_stack = stack;
+ assert(stack);
+ thread->kernel_stack = stack;
+ thread_initialize_kernel_state(thread);
- statep->k_eip = (unsigned long) Thread_continue;
- statep->k_ebx = (unsigned long) thread_continue;
- statep->k_esp = (unsigned long) STACK_IEL(stack);
+ statep = STACK_IKS(stack);
- STACK_IEL(stack)->saved_state = &thread->machine.pcb->iss;
+ /*
+ * 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;
+ return;
}
/*
void
machine_stack_handoff(thread_t old,
- thread_t new)
+ thread_t new)
{
- vm_offset_t stack;
+ vm_offset_t stack;
- KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_HANDOFF),
- thread, thread->priority,
- thread->sched_pri, 0, 0);
+ assert(new);
+ assert(old);
- assert(new);
- assert(old);
+ kpc_off_cpu(old);
+
+ stack = old->kernel_stack;
+ if (stack == old->reserved_stack) {
+ assert(new->reserved_stack);
+ old->reserved_stack = new->reserved_stack;
+ new->reserved_stack = stack;
+ }
+ old->kernel_stack = 0;
+ /*
+ * A full call to machine_stack_attach() is unnecessry
+ * because old stack is already initialized.
+ */
+ new->kernel_stack = stack;
- stack = machine_stack_detach(old);
- machine_stack_attach(new, stack);
+ fpu_switch_context(old, new);
- PMAP_SWITCH_CONTEXT(old->task, new->task, cpu_number());
+ old->machine.specFlags &= ~OnProc;
+ new->machine.specFlags |= OnProc;
- KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED,MACH_STACK_HANDOFF) | DBG_FUNC_NONE,
- (int)old, (int)new, old->sched_pri, new->sched_pri, 0);
+ pmap_switch_context(old, new, cpu_number());
+ act_machine_switch_pcb(old, new);
- machine_set_current_thread(new);
+#if HYPERVISOR
+ ml_hv_cswitch(old, new);
+#endif
- current_cpu_datap()->cpu_active_stack = new->kernel_stack;
+ machine_set_current_thread(new);
+ thread_initialize_kernel_state(new);
- return;
+ return;
}
-struct i386_act_context {
- struct i386_saved_state ss;
- struct i386_float_state fs;
+
+
+
+struct x86_act_context32 {
+ x86_saved_state32_t ss;
+ x86_float_state32_t fs;
+ x86_debug_state32_t ds;
};
+struct x86_act_context64 {
+ x86_saved_state64_t ss;
+ x86_float_state64_t fs;
+ x86_debug_state64_t ds;
+};
+
+
+
void *
act_thread_csave(void)
{
-struct i386_act_context *ic;
-kern_return_t kret;
-int val;
+ kern_return_t kret;
+ mach_msg_type_number_t val;
+ thread_t thr_act = current_thread();
- ic = (struct i386_act_context *)kalloc(sizeof(struct i386_act_context));
+ if (thread_is_64bit_addr(thr_act)) {
+ struct x86_act_context64 *ic64;
- if (ic == (struct i386_act_context *)NULL)
- return((void *)0);
+ ic64 = (struct x86_act_context64 *)kalloc(sizeof(struct x86_act_context64));
- val = i386_SAVED_STATE_COUNT;
- kret = machine_thread_get_state(current_thread(),
- i386_SAVED_STATE,
- (thread_state_t) &ic->ss,
- &val);
+ if (ic64 == (struct x86_act_context64 *)NULL) {
+ return (void *)0;
+ }
+
+ val = x86_SAVED_STATE64_COUNT;
+ kret = machine_thread_get_state(thr_act, x86_SAVED_STATE64,
+ (thread_state_t) &ic64->ss, &val);
+ if (kret != KERN_SUCCESS) {
+ 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);
+ if (kret != KERN_SUCCESS) {
+ kfree(ic64, sizeof(struct x86_act_context64));
+ return (void *)0;
+ }
+
+ val = x86_DEBUG_STATE64_COUNT;
+ kret = machine_thread_get_state(thr_act,
+ x86_DEBUG_STATE64,
+ (thread_state_t)&ic64->ds,
+ &val);
+ if (kret != KERN_SUCCESS) {
+ kfree(ic64, sizeof(struct x86_act_context64));
+ return (void *)0;
+ }
+ 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;
+ }
+
+ val = x86_SAVED_STATE32_COUNT;
+ kret = machine_thread_get_state(thr_act, x86_SAVED_STATE32,
+ (thread_state_t) &ic32->ss, &val);
+ if (kret != KERN_SUCCESS) {
+ 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);
if (kret != KERN_SUCCESS) {
- kfree(ic,sizeof(struct i386_act_context));
- return((void *)0);
- }
- val = i386_FLOAT_STATE_COUNT;
- kret = machine_thread_get_state(current_thread(),
- i386_FLOAT_STATE,
- (thread_state_t) &ic->fs,
- &val);
+ kfree(ic32, sizeof(struct x86_act_context32));
+ return (void *)0;
+ }
+
+ val = x86_DEBUG_STATE32_COUNT;
+ kret = machine_thread_get_state(thr_act,
+ x86_DEBUG_STATE32,
+ (thread_state_t)&ic32->ds,
+ &val);
if (kret != KERN_SUCCESS) {
- kfree(ic,sizeof(struct i386_act_context));
- return((void *)0);
+ kfree(ic32, sizeof(struct x86_act_context32));
+ return (void *)0;
}
- return(ic);
+ return ic32;
+ }
}
-void
+
+
+void
act_thread_catt(void *ctx)
{
-struct i386_act_context *ic;
-kern_return_t kret;
-
- ic = (struct i386_act_context *)ctx;
-
- if (ic == (struct i386_act_context *)NULL)
- return;
-
- kret = machine_thread_set_state(current_thread(),
- i386_SAVED_STATE,
- (thread_state_t) &ic->ss,
- i386_SAVED_STATE_COUNT);
- if (kret != KERN_SUCCESS)
- goto out;
-
- kret = machine_thread_set_state(current_thread(),
- i386_FLOAT_STATE,
- (thread_state_t) &ic->fs,
- i386_FLOAT_STATE_COUNT);
- if (kret != KERN_SUCCESS)
- goto out;
-out:
- kfree(ic,sizeof(struct i386_act_context));
+ thread_t thr_act = current_thread();
+ kern_return_t kret;
+
+ if (ctx == (void *)NULL) {
+ return;
+ }
+
+ if (thread_is_64bit_addr(thr_act)) {
+ struct x86_act_context64 *ic64;
+
+ 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);
+ if (kret == KERN_SUCCESS) {
+ 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;
+
+ 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);
+ if (kret == KERN_SUCCESS) {
+ (void) machine_thread_set_state(thr_act, x86_FLOAT_STATE32,
+ (thread_state_t) &ic32->fs, x86_FLOAT_STATE32_COUNT);
+ }
+ kfree(ic32, sizeof(struct x86_act_context32));
+ }
+}
+
+
+void
+act_thread_cfree(__unused void *ctx)
+{
+ /* XXX - Unused */
}
-void act_thread_cfree(void *ctx)
+/*
+ * 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)
{
- kfree(ctx,sizeof(struct i386_act_context));
+ 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