/*
- * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* the rights to redistribute these changes.
*/
-#include <mach_rt.h>
#include <mach_debug.h>
#include <mach_ldebug.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 <i386/cpu_number.h>
#include <i386/eflags.h>
#include <i386/proc_reg.h>
-#include <i386/tss.h>
-#include <i386/user_ldt.h>
#include <i386/fpu.h>
-#include <i386/mp_desc.h>
#include <i386/misc_protos.h>
+#include <i386/mp_desc.h>
#include <i386/thread.h>
-#if defined(__i386__)
-#include <i386/fpu.h>
-#endif
-#include <i386/seg.h>
#include <i386/machine_routines.h>
#include <i386/lapic.h> /* LAPIC_PMC_SWI_VECTOR */
-#include <machine/commpage.h>
-
-#if CONFIG_COUNTERS
-#include <pmc/pmc.h>
-#endif /* CONFIG_COUNTERS */
+#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_zone; /* zone for saved_state area */
/* Forward */
-void act_machine_throughcall(thread_t thr_act);
-void act_machine_return(int);
-
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 CONFIG_COUNTERS
+#if HYPERVISOR
static inline void
-machine_pmc_cswitch(thread_t /* old */, thread_t /* new */);
-
-static inline boolean_t
-machine_thread_pmc_eligible(thread_t);
-
-static inline void
-pmc_swi(thread_t /* old */, thread_t /*new */);
-
-static inline boolean_t
-machine_thread_pmc_eligible(thread_t t) {
- /*
- * NOTE: Task-level reservations are propagated to child threads via
- * thread_create_internal. Any mutation of task reservations forces a
- * recalculate of t_chud (for the pmc flag) for all threads in that task.
- * Consequently, we can simply check the current thread's flag against
- * THREAD_PMC_FLAG. If the result is non-zero, we SWI for a PMC switch.
- */
- return (t != NULL) ? ((t->t_chud & THREAD_PMC_FLAG) ? TRUE : FALSE) : FALSE;
-}
-
-static inline void
-pmc_swi(thread_t old, thread_t new) {
- current_cpu_datap()->csw_old_thread = old;
- current_cpu_datap()->csw_new_thread = new;
- __asm__ __volatile__("int %0"::"i"(LAPIC_PMC_SWI_VECTOR):"memory");
-}
-
-static inline void
-machine_pmc_cswitch(thread_t old, thread_t new) {
- if (machine_thread_pmc_eligible(old) || machine_thread_pmc_eligible(new)) {
- pmc_swi(old, new);
- }
-}
+ml_hv_cswitch(thread_t old, thread_t new)
+{
+ if (old->hv_thread_target)
+ hv_callbacks.preempt(old->hv_thread_target);
-void ml_get_csw_threads(thread_t *old, thread_t *new) {
- *old = current_cpu_datap()->csw_old_thread;
- *new = current_cpu_datap()->csw_new_thread;
+ if (new->hv_thread_target)
+ hv_callbacks.dispatch(new->hv_thread_target);
}
-
-#endif /* CONFIG_COUNTERS */
+#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 Merom and newer processors
- * (it signifies an 8-byte wide region). We use the 64bit capability
- * of the processor in lieu of the more laborious model/family checks
- * as all 64-bit capable processors so far support this.
- * Reject an attempt to use this on 64-bit incapable processors.
- */
- if (current_cpu_datap()->cpu_is64bit == FALSE)
- 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)
-{
- __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;
-}
-
extern void set_64bit_debug_regs(x86_debug_state64_t *ds);
-static inline void
-set_live_debug_state64(cpu_data_t *cdp, x86_debug_state64_t *ds)
-{
- /*
- * We need to enter 64-bit mode in order to set the full
- * width of these registers
- */
- set_64bit_debug_regs(ds);
- cdp->cpu_dr7 = ds->dr7;
-}
-
boolean_t
debug_state_is_valid32(x86_debug_state32_t *ds)
{
- if (!dr7_is_valid(&ds->dr7))
+ if (!dr7d_is_valid(&ds->dr7))
return FALSE;
-#if defined(__i386__)
- /*
- * 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)
- return FALSE;
-
- if (ds->dr7 & (0x1<<2))
- if (ds->dr1 >= (unsigned long)HIGH_MEM_BASE)
- return FALSE;
-
- if (ds->dr7 & (0x1<<4))
- if (ds->dr2 >= (unsigned long)HIGH_MEM_BASE)
- return FALSE;
-
- if (ds->dr7 & (0x1<<6))
- if (ds->dr3 >= (unsigned long)HIGH_MEM_BASE)
- return FALSE;
-#endif
-
return TRUE;
}
boolean_t
debug_state_is_valid64(x86_debug_state64_t *ds)
{
- if (!dr7_is_valid((uint32_t *)&ds->dr7))
+ if (!dr7d_is_valid((uint32_t *)&ds->dr7))
return FALSE;
/*
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;
}
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) {
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) {
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) {
{
x86_debug_state32_t *saved_state;
- saved_state = thread->machine.pcb->ids;
+ saved_state = thread->machine.ids;
if (saved_state) {
copy_debug_state32(saved_state, ds, TRUE);
{
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) {
copy_debug_state64(saved_state, ds, TRUE);
consider_machine_adjust(void)
{
}
-extern void *get_bsduthreadarg(thread_t th);
-
-#if defined(__x86_64__)
-static void
-act_machine_switch_pcb( thread_t new )
-{
- pcb_t pcb = new->machine.pcb;
- struct real_descriptor *ldtp;
- mach_vm_offset_t pcb_stack_top;
- cpu_data_t *cdp = current_cpu_datap();
-
- assert(new->kernel_stack != 0);
-
- if (!cpu_mode_is64bit()) {
- panic("K64 is 64bit!");
- } else if (is_saved_state64(pcb->iss)) {
- /*
- * The test above is performed against the thread save state
- * flavor and not task's 64-bit feature flag because of the
- * thread/task 64-bit state divergence that can arise in
- * task_set_64bit() x86: the task state is changed before
- * the individual thread(s).
- */
- 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 = 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 = 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() = pcb_stack_top;
-
- cdp->cpu_task_map = new->map->pmap->pm_task_map;
-
- /*
- * Enable the 64-bit user code segment, USER64_CS.
- * Disable the 32-bit user code segment, USER_CS.
- */
- ldt_desc_p(USER64_CS)->access |= ACC_PL_U;
- ldt_desc_p(USER_CS)->access &= ~ACC_PL_U;
-
- /*
- * Switch user's GS base if necessary
- * by setting the Kernel GS base MSR
- * - this will become the user's on the swapgs when
- * returning to user-space. Avoid this for
- * kernel threads (no user TLS support required)
- * and verify the memory shadow of the segment base
- * in the event it was altered in user space.
- */
- if ((pcb->cthread_self != 0) || (new->task != kernel_task)) {
- if ((cdp->cpu_uber.cu_user_gs_base != pcb->cthread_self) || (pcb->cthread_self != rdmsr64(MSR_IA32_KERNEL_GS_BASE))) {
- cdp->cpu_uber.cu_user_gs_base = pcb->cthread_self;
- wrmsr64(MSR_IA32_KERNEL_GS_BASE, pcb->cthread_self);
- }
- }
- } 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 = (uintptr_t) (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 = isf;
-
- /* Top of temporary sysenter stack points to pcb stack */
- *current_sstk64() = pcb_stack_top;
-
- /* Interrupt stack is pcb */
- current_ktss64()->rsp0 = pcb_stack_top;
-
- cdp->cpu_task_map = TASK_MAP_32BIT;
- /* Precalculate pointers to syscall argument store, for use
- * in the trampolines.
- */
- cdp->cpu_uber_arg_store = (vm_offset_t)get_bsduthreadarg(new);
- cdp->cpu_uber_arg_store_valid = (vm_offset_t)&pcb->arg_store_valid;
- pcb->arg_store_valid = 0;
-
- /*
- * Disable USER64_CS
- * Enable USER_CS
- */
- ldt_desc_p(USER64_CS)->access &= ~ACC_PL_U;
- ldt_desc_p(USER_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;
- 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);
- }
- }
-
- /*
- * Bump the scheduler generation count in the commpage.
- * This can be read by user code to detect its preemption.
- */
- commpage_sched_gen_inc();
-}
-#else
-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;
-
- } else if (is_saved_state64(pcb->iss)) {
- /*
- * The test above is performed against the thread save state
- * flavor and not task's 64-bit feature flag because of the
- * thread/task 64-bit state divergence that can arise in
- * task_set_64bit() x86: the task state is changed before
- * the individual thread(s).
- */
- 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_task_map;
-
- /*
- * Enable the 64-bit user code segment, USER64_CS.
- * Disable the 32-bit user code segment, USER_CS.
- */
- ldt_desc_p(USER64_CS)->access |= ACC_PL_U;
- ldt_desc_p(USER_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;
- /* Precalculate pointers to syscall argument store, for use
- * in the trampolines.
- */
- cdp->cpu_uber_arg_store = UBER64((vm_offset_t)get_bsduthreadarg(new));
- cdp->cpu_uber_arg_store_valid = UBER64((vm_offset_t)&pcb->arg_store_valid);
- pcb->arg_store_valid = 0;
-
- /*
- * Disable USER64_CS
- * Enable USER_CS
- */
- ldt_desc_p(USER64_CS)->access &= ~ACC_PL_U;
- ldt_desc_p(USER_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);
- }
-
- /*
- * Bump the scheduler generation count in the commpage.
- * This can be read by user code to detect its preemption.
- */
- commpage_sched_gen_inc();
-}
-#endif
/*
* Switch to the first thread on a CPU.
machine_load_context(
thread_t new)
{
-#if CONFIG_COUNTERS
- machine_pmc_cswitch(NULL, new);
-#endif
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
-#if CONFIG_COUNTERS
- machine_pmc_cswitch(old, new);
-#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,
+ * Monitor the stack depth and report new max,
* not worrying about races.
*/
vm_offset_t depth = current_stack_depth();
* 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);
+ act_machine_switch_pcb(old, new);
+
+#if HYPERVISOR
+ ml_hv_cswitch(old, new);
+#endif
return(Switch_context(old, continuation, new));
}
#if CONFIG_VMX
vmx_suspend();
#endif
- fpu_save_context(thread);
- PMAP_SWITCH_CONTEXT(thread, processor->idle_thread, cpu_number());
+ fpu_switch_context(thread, NULL);
+ pmap_switch_context(thread, processor->idle_thread, cpu_number());
return(Shutdown_context(thread, doshutdown, processor));
}
-/*
- * 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)
-{
-}
-
/*
* This is where registers that are not normally specified by the mach-o
* 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 (thread->machine.ifps) {
+ (void) fpu_set_fxstate(thread, NULL, x86_FLOAT_STATE64);
if (thread == current_thread())
clear_fpu();
}
- if (thread->machine.pcb->ids) {
- zfree(ids_zone, thread->machine.pcb->ids);
- thread->machine.pcb->ids = NULL;
+ if (thread->machine.ids) {
+ zfree(ids_zone, thread->machine.ids);
+ thread->machine.ids = NULL;
}
return KERN_SUCCESS;
saved_state = USER_REGS64(thread);
es->trapno = saved_state->isf.trapno;
+ es->cpu = saved_state->isf.cpu;
es->err = (typeof(es->err))saved_state->isf.err;
es->faultvaddr = saved_state->cr2;
}
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;
-#ifdef __i386__
- if (ts->ss == 0) ts->ss = USER_DS;
- if (ts->ds == 0) ts->ds = USER_DS;
- if (ts->es == 0) ts->es = USER_DS;
-#else /* __x86_64__ */
/*
* On a 64 bit kernel, we always override the data segments,
* as the actual selector numbers have changed. This also
ts->ss = USER_DS;
ts->ds = USER_DS;
ts->es = USER_DS;
-#endif
+ /* 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,
{
x86_saved_state64_t *saved_state;
+ pal_register_cache_state(thread, DIRTY);
saved_state = USER_REGS64(thread);
{
x86_saved_state32_t *saved_state;
+ pal_register_cache_state(thread, VALID);
saved_state = USER_REGS32(thread);
{
x86_saved_state64_t *saved_state;
+ pal_register_cache_state(thread, VALID);
saved_state = USER_REGS64(thread);
}
-void
-thread_set_wq_state32(thread_t thread, thread_state_t tstate)
-{
- x86_thread_state32_t *state;
- x86_saved_state32_t *saved_state;
- thread_t curth = current_thread();
- spl_t s=0;
-
-
- saved_state = USER_REGS32(thread);
-
- state = (x86_thread_state32_t *)tstate;
-
- if (curth != thread) {
- s = splsched();
- thread_lock(thread);
- }
-
- saved_state->ebp = 0;
- saved_state->eip = state->eip;
- saved_state->eax = state->eax;
- saved_state->ebx = state->ebx;
- saved_state->ecx = state->ecx;
- saved_state->edx = state->edx;
- saved_state->edi = state->edi;
- saved_state->esi = state->esi;
- saved_state->uesp = state->esp;
- saved_state->efl = EFL_USER_SET;
-
- saved_state->cs = USER_CS;
- saved_state->ss = USER_DS;
- saved_state->ds = USER_DS;
- saved_state->es = USER_DS;
-
-
- if (curth != thread) {
- thread_unlock(thread);
- splx(s);
- }
-}
-
-
-void
-thread_set_wq_state64(thread_t thread, thread_state_t tstate)
-{
- x86_thread_state64_t *state;
- x86_saved_state64_t *saved_state;
- thread_t curth = current_thread();
- spl_t s=0;
-
-
- saved_state = USER_REGS64(thread);
- state = (x86_thread_state64_t *)tstate;
-
- if (curth != thread) {
- s = splsched();
- thread_lock(thread);
- }
-
- saved_state->rbp = 0;
- saved_state->rdi = state->rdi;
- saved_state->rsi = state->rsi;
- saved_state->rdx = state->rdx;
- saved_state->rcx = state->rcx;
- saved_state->r8 = state->r8;
- saved_state->r9 = state->r9;
-
- saved_state->isf.rip = state->rip;
- saved_state->isf.rsp = state->rsp;
- saved_state->isf.cs = USER64_CS;
- saved_state->isf.rflags = EFL_USER_SET;
-
-
- if (curth != thread) {
- thread_unlock(thread);
- splx(s);
- }
-}
-
-
-
/*
* act_machine_set_state:
*
state->gs))
return KERN_INVALID_ARGUMENT;
+ pal_register_cache_state(thr_act, DIRTY);
saved_state = USER_REGS32(thr_act);
!IS_USERADDR64_CANONICAL(state->isf.rip))
return KERN_INVALID_ARGUMENT;
+ pal_register_cache_state(thr_act, DIRTY);
saved_state = USER_REGS64(thr_act);
}
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 != x86_FLOAT_STATE32_COUNT)
+ 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:
+ case x86_AVX_STATE64:
+#if !defined(RC_HIDE_XNU_J137)
+ case x86_AVX512_STATE64:
+#endif /* not RC_HIDE_XNU_J137 */
{
- if (count != x86_FLOAT_STATE64_COUNT)
+ 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:
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);
+
+ 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);
}
return set_thread_state32(thr_act, &state->uts.ts32);
} else
return(KERN_INVALID_ARGUMENT);
-
- break;
}
case x86_DEBUG_STATE32:
{
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;
*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 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;
}
}
-/*
- * 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;
- x86_saved_state_t *iss;
-
-#if NCOPY_WINDOWS > 0
- inval_copy_windows(thread);
-
- thread->machine.physwindow_pte = 0;
- thread->machine.physwindow_busy = 0;
-#endif
-
- /*
- * Allocate pcb only if required.
- */
- if (pcb->sf == NULL) {
- pcb->sf = zalloc(iss_zone);
- if (pcb->sf == NULL)
- panic("iss_zone");
- }
-
- if (task_has_64BitAddr(task)) {
- x86_sframe64_t *sf64;
-
- sf64 = (x86_sframe64_t *) pcb->sf;
-
- 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 *)pcb->sf;
-
- bzero((char *)sfc32, sizeof(x86_sframe_compat32_t));
-
- iss = (x86_saved_state_t *) &sfc32->ssf.iss32;
- iss->flavor = x86_SAVED_STATE32;
-#if defined(__i386__)
-#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 /* DEBUG */
- } else {
- x86_sframe32_t *sf32;
- struct real_descriptor *ldtp;
- pmap_paddr_t paddr;
-
- sf32 = (x86_sframe32_t *) pcb->sf;
-
- bzero((char *)sf32, sizeof(x86_sframe32_t));
-
- iss = (x86_saved_state_t *) &sf32->ssf;
- iss->flavor = x86_SAVED_STATE32;
- pcb->iss_pte0 = pte_kernel_rw(kvtophys((vm_offset_t)iss));
- if (0 == (paddr = pa_to_pte(kvtophys((vm_offset_t)iss + PAGE_SIZE))))
- pcb->iss_pte1 = INTEL_PTE_INVALID;
- else
- pcb->iss_pte1 = pte_kernel_rw(paddr);
-
-
- 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)];
-#endif /* __i386__ */
- }
- /*
- * 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);
-
- pcb->arg_store_valid = 0;
- pcb->cthread_self = 0;
- pcb->uldt_selector = 0;
-
- /* Ensure that the "cthread" descriptor describes a valid
- * segment.
- */
- if ((pcb->cthread_desc.access & ACC_P) == 0) {
- struct real_descriptor *ldtp;
- ldtp = (struct real_descriptor *)current_ldt();
- pcb->cthread_desc = ldtp[sel_idx(USER_DS)];
- }
-
-
- 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) {
- zfree(iss_zone, pcb->sf);
- pcb->sf = 0;
- }
- if (pcb->ids) {
- zfree(ids_zone, pcb->ids);
- pcb->ids = NULL;
- }
- thread->machine.pcb = (pcb_t)0;
-
-}
-
void
machine_thread_switch_addrmode(thread_t thread)
{
disable_preemption();
/*
- * Reset the state saveareas.
+ * 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()) {
-#if defined(__i386__)
- if (current_cpu_datap()->cpu_active_cr3 != kernel_pmap->pm_cr3)
- pmap_load_kernel_cr3();
-#endif /* defined(__i386) */
- act_machine_switch_pcb(thread);
+ boolean_t istate = ml_set_interrupts_enabled(FALSE);
+ act_machine_switch_pcb(NULL, thread);
+ ml_set_interrupts_enabled(istate);
}
enable_preemption();
}
current_cpu_datap()->cpu_active_thread = thread;
}
-/*
- * This is called when a task is terminated, and also on exec().
- * Clear machine-dependent state that is stored on the task.
- */
-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);
- }
-
- if (self_task->task_debug != NULL) {
- zfree(ids_zone, self_task->task_debug);
- self_task->task_debug = NULL;
- }
- }
-}
-
-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()) {
- assert(sizeof(x86_sframe_compat32_t) % 16 == 0);
- iss_zone = zinit(sizeof(x86_sframe64_t),
- thread_max * sizeof(x86_sframe64_t),
- THREAD_CHUNK * sizeof(x86_sframe64_t),
- "x86_64 saved state");
-
- ids_zone = zinit(sizeof(x86_debug_state64_t),
- thread_max * sizeof(x86_debug_state64_t),
- THREAD_CHUNK * sizeof(x86_debug_state64_t),
- "x86_64 debug state");
-
- } else {
- iss_zone = zinit(sizeof(x86_sframe32_t),
- thread_max * sizeof(x86_sframe32_t),
- THREAD_CHUNK * sizeof(x86_sframe32_t),
- "x86 saved state");
- ids_zone = 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();
-}
-
+ 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");
-#if defined(__i386__)
-/*
- * 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(%p)]", rhp->next);
- printf("special_handler()->");
- break;
- }
- printf("hdlr_%d(%p)->", 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;
+ 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");
- ssp = USER_REGS32(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);
- }
+ fpu_module_init();
}
-int
-dump_act(thread_t thr_act)
-{
- if (!thr_act)
- return(0);
-
- printf("thread(%p)(%d): task=%p(%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=%p\n", thr_act->machine.pcb);
-
- if (thr_act->kernel_stack) {
- vm_offset_t stack = thr_act->kernel_stack;
-
- printf("\tk_stk %lx eip %x ebx %x esp %x iss %p\n",
- (long)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);
-}
-#endif
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;
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_IEL(stack);
+ 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);
-#if CONFIG_COUNTERS
- machine_pmc_cswitch(old, new);
-#endif
+ kpc_off_cpu(old);
stack = old->kernel_stack;
if (stack == old->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);
+
+#if HYPERVISOR
+ ml_hv_cswitch(old, new);
+#endif
machine_set_current_thread(new);
+ thread_initialize_kernel_state(new);
return;
}
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);
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 */
}
-void x86_toggle_sysenter_arg_store(thread_t thread, boolean_t valid);
-void x86_toggle_sysenter_arg_store(thread_t thread, boolean_t valid) {
- thread->machine.pcb->arg_store_valid = valid;
-}
-
-boolean_t x86_sysenter_arg_store_isvalid(thread_t thread);
-
-boolean_t x86_sysenter_arg_store_isvalid(thread_t thread) {
- return (thread->machine.pcb->arg_store_valid);
-}
/*
* Duplicate one x86_debug_state32_t to another. "all" parameter
target->dr6 = src->dr6;
target->dr7 = src->dr7;
}
-
projects / apple / xnu.git / blobdiff