/*
- * Copyright (c) 2000-2012 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/machine_routines.h>
#include <i386/lapic.h> /* LAPIC_PMC_SWI_VECTOR */
-#if CONFIG_COUNTERS
-#include <pmc/pmc.h>
-#endif /* CONFIG_COUNTERS */
-
-#if KPC
-#include <kern/kpc.h>
-#endif
-
-#if KPERF
-#include <kperf/kperf.h>
+#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 */
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
-static inline void
-machine_pmc_cswitch(thread_t /* old */, thread_t /* new */);
-
-static inline void
-pmc_swi(thread_t /* old */, thread_t /*new */);
-
-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;
- pal_pmc_swi();
-}
-
-static inline void
-machine_pmc_cswitch(thread_t old, thread_t new) {
- if (pmc_thread_eligible(old) || pmc_thread_eligible(new)) {
- pmc_swi(old, new);
- }
-}
-
-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;
-}
-
-#endif /* CONFIG_COUNTERS */
-
-#if KPC
+#if HYPERVISOR
static inline void
-ml_kpc_cswitch(thread_t old, thread_t new)
+ml_hv_cswitch(thread_t old, thread_t new)
{
- if(!kpc_threads_counting)
- return;
-
- /* call the kpc function */
- kpc_switch_context( old, new );
-}
-#endif
+ if (old->hv_thread_target)
+ hv_callbacks.preempt(old->hv_thread_target);
-#if KPERF
-static inline void
-ml_kperf_cswitch(thread_t old, thread_t new)
-{
- if(!kperf_cswitch_hook)
- return;
-
- /* call the kpc function */
- kperf_switch_context( old, new );
+ if (new->hv_thread_target)
+ hv_callbacks.dispatch(new->hv_thread_target);
}
#endif
/*
- * Don't let an illegal value for dr7 get set. Specifically,
- * check for undefined settings. Setting these bit patterns
+ * Don't let an illegal value for the lower 32-bits of dr7 get set.
+ * Specifically, check for undefined settings. Setting these bit patterns
* result in undefined behaviour and can lead to an unexpected
* TRCTRAP.
*/
static boolean_t
-dr7_is_valid(uint32_t *dr7)
+dr7d_is_valid(uint32_t *dr7d)
{
int i;
uint32_t mask1, mask2;
if (!(get_cr4() & CR4_DE))
for (i = 0, mask1 = 0x3<<16, mask2 = 0x2<<16; i < 4;
i++, mask1 <<= 4, mask2 <<= 4)
- if ((*dr7 & mask1) == mask2)
+ 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));
- 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;
-
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;
}
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) {
machine_load_context(
thread_t new)
{
-#if CONFIG_COUNTERS
- machine_pmc_cswitch(NULL, new);
-#endif
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_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
- ml_kpc_cswitch(old, new);
-#endif
-#if KPERF
- ml_kperf_cswitch(old, new);
-#endif
+ 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(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));
}
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,
}
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))
}
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, flavor);
return(KERN_INVALID_ARGUMENT);
}
- case x86_AVX_STATE32:
- {
- if (count != x86_AVX_STATE32_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- return fpu_set_fxstate(thr_act, tstate, flavor);
- }
-
- case x86_AVX_STATE64:
- {
- if (count != x86_AVX_STATE64_COUNT)
- return(KERN_INVALID_ARGUMENT);
-
- if (!thread_is_64bit(thr_act))
- return(KERN_INVALID_ARGUMENT);
-
- return fpu_set_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;
- if (count != x86_AVX_STATE_COUNT)
+ if (count != _MachineStateCount[flavor])
return(KERN_INVALID_ARGUMENT);
state = (x86_avx_state_t *)tstate;
- if (state->ash.flavor == x86_AVX_STATE64 &&
- state->ash.count == x86_FLOAT_STATE64_COUNT &&
+ /* 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,
- x86_FLOAT_STATE64);
+ flavor - 1);
}
- if (state->ash.flavor == x86_FLOAT_STATE32 &&
- state->ash.count == x86_FLOAT_STATE32_COUNT &&
+ /* 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,
- x86_FLOAT_STATE32);
+ 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;
}
+#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;
}
case x86_AVX_STATE32:
+#if !defined(RC_HIDE_XNU_J137)
+ case x86_AVX512_STATE32:
+#endif
{
- if (*count != x86_AVX_STATE32_COUNT)
+ if (*count != _MachineStateCount[flavor])
return(KERN_INVALID_ARGUMENT);
if (thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
- *count = x86_AVX_STATE32_COUNT;
+ *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 != x86_AVX_STATE64_COUNT)
+ if (*count != _MachineStateCount[flavor])
return(KERN_INVALID_ARGUMENT);
if ( !thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
- *count = x86_AVX_STATE64_COUNT;
+ *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;
- kern_return_t kret;
+ thread_state_t fstate;
- if (*count < x86_AVX_STATE_COUNT)
+ if (*count < _MachineStateCount[flavor])
return(KERN_INVALID_ARGUMENT);
+ *count = _MachineStateCount[flavor];
state = (x86_avx_state_t *)tstate;
- bzero((char *)state, sizeof(x86_avx_state_t));
+ bzero((char *)state, *count * sizeof(int));
+
if (thread_is_64bit(thr_act)) {
- state->ash.flavor = x86_AVX_STATE64;
- state->ash.count = x86_AVX_STATE64_COUNT;
- kret = fpu_get_fxstate(thr_act,
- (thread_state_t)&state->ufs.as64,
- x86_AVX_STATE64);
+ flavor -= 1; /* 64-bit flavor */
+ fstate = (thread_state_t) &state->ufs.as64;
} else {
- state->ash.flavor = x86_AVX_STATE32;
- state->ash.count = x86_AVX_STATE32_COUNT;
- kret = fpu_get_fxstate(thr_act,
- (thread_state_t)&state->ufs.as32,
- x86_AVX_STATE32);
+ flavor -= 2; /* 32-bit flavor */
+ fstate = (thread_state_t) &state->ufs.as32;
}
- *count = x86_AVX_STATE_COUNT;
+ state->ash.flavor = flavor;
+ state->ash.count = _MachineStateCount[flavor];
- return(kret);
+ return fpu_get_fxstate(thr_act, fstate, flavor);
}
case x86_THREAD_STATE32:
*/
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()) {
boolean_t istate = ml_set_interrupts_enabled(FALSE);
assert(stack);
thread->kernel_stack = stack;
+ thread_initialize_kernel_state(thread);
statep = STACK_IKS(stack);
#if defined(__x86_64__)
statep->k_rip = (unsigned long) Thread_continue;
statep->k_rbx = (unsigned long) thread_continue;
- statep->k_rsp = (unsigned long) (STACK_IKS(stack) - 1);
+ statep->k_rsp = (unsigned long) STACK_IKS(stack);
#else
statep->k_eip = (unsigned long) Thread_continue;
statep->k_ebx = (unsigned long) thread_continue;
- statep->k_esp = (unsigned long) (STACK_IKS(stack) - 1);
+ statep->k_esp = (unsigned long) STACK_IKS(stack);
#endif
return;
assert(new);
assert(old);
-#if CONFIG_COUNTERS
- machine_pmc_cswitch(old, new);
-#endif
-#if KPC
- ml_kpc_cswitch(old, new);
-#endif
-#if KPERF
- ml_kperf_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());
+ 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;
}
projects / apple / xnu.git / blobdiff