/*
- * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <i386/misc_protos.h>
#include <i386/mp_desc.h>
#include <i386/thread.h>
-#if defined(__i386__)
-#include <i386/fpu.h>
-#endif
#include <i386/machine_routines.h>
#include <i386/lapic.h> /* LAPIC_PMC_SWI_VECTOR */
#include <pmc/pmc.h>
#endif /* CONFIG_COUNTERS */
+#if KPC
+#include <kern/kpc.h>
+#endif
+
+#if KPERF
+#include <kperf/kperf.h>
+#endif
+
+#if HYPERVISOR
+#include <kern/hv_support.h>
+#endif
+
/*
* Maps state flavor to number of words in the state:
*/
#endif /* CONFIG_COUNTERS */
+#if KPC
+static inline void
+ml_kpc_cswitch(thread_t old, thread_t new)
+{
+ if(!kpc_threads_counting)
+ return;
+
+ /* call the kpc function */
+ kpc_switch_context( old, new );
+}
+#endif
+
+#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 );
+}
+#endif
+
+#if HYPERVISOR
+static inline void
+ml_hv_cswitch(thread_t old, thread_t new)
+{
+ if (old->hv_thread_target)
+ hv_callbacks.preempt(old->hv_thread_target);
+
+ if (new->hv_thread_target)
+ hv_callbacks.dispatch(new->hv_thread_target);
+}
+#endif
+
/*
* Don't let an illegal value for dr7 get set. Specifically,
* check for undefined settings. Setting these bit patterns
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)
- 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
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))
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;
}
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) {
#endif
#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
/*
* Save FP registers if in use.
*/
act_machine_switch_pcb(old, new);
+#if HYPERVISOR
+ ml_hv_cswitch(old, new);
+#endif
+
return(Switch_context(old, continuation, new));
}
* 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,
return fpu_set_fxstate(thr_act, tstate, flavor);
}
+ case x86_AVX_STATE:
+ {
+ x86_avx_state_t *state;
+
+ if (count != x86_AVX_STATE_COUNT)
+ return(KERN_INVALID_ARGUMENT);
+
+ state = (x86_avx_state_t *)tstate;
+ if (state->ash.flavor == x86_AVX_STATE64 &&
+ state->ash.count == x86_FLOAT_STATE64_COUNT &&
+ thread_is_64bit(thr_act)) {
+ return fpu_set_fxstate(thr_act,
+ (thread_state_t)&state->ufs.as64,
+ x86_FLOAT_STATE64);
+ }
+ if (state->ash.flavor == x86_FLOAT_STATE32 &&
+ state->ash.count == x86_FLOAT_STATE32_COUNT &&
+ !thread_is_64bit(thr_act)) {
+ return fpu_set_fxstate(thr_act,
+ (thread_state_t)&state->ufs.as32,
+ x86_FLOAT_STATE32);
+ }
+ return(KERN_INVALID_ARGUMENT);
+ }
+
case x86_THREAD_STATE32:
{
if (count != x86_THREAD_STATE32_COUNT)
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 x86_SAVED_STATE32:
{
x86_saved_state32_t *state;
return(kret);
}
- case x86_AVX_STATE32:
- {
+ case x86_AVX_STATE32:
+ {
if (*count != x86_AVX_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
*count = x86_AVX_STATE32_COUNT;
return fpu_get_fxstate(thr_act, tstate, flavor);
- }
+ }
- case x86_AVX_STATE64:
- {
+ case x86_AVX_STATE64:
+ {
if (*count != x86_AVX_STATE64_COUNT)
return(KERN_INVALID_ARGUMENT);
*count = x86_AVX_STATE64_COUNT;
return fpu_get_fxstate(thr_act, tstate, flavor);
- }
+ }
+
+ case x86_AVX_STATE:
+ {
+ x86_avx_state_t *state;
+ kern_return_t kret;
+
+ if (*count < x86_AVX_STATE_COUNT)
+ return(KERN_INVALID_ARGUMENT);
+
+ state = (x86_avx_state_t *)tstate;
+
+ bzero((char *)state, sizeof(x86_avx_state_t));
+ 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);
+ } 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);
+ }
+ *count = x86_AVX_STATE_COUNT;
+
+ return(kret);
+ }
case x86_THREAD_STATE32:
{
/* If we're switching ourselves, reset the pcb addresses etc. */
if (thread == current_thread()) {
boolean_t istate = ml_set_interrupts_enabled(FALSE);
-#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(NULL, thread);
ml_set_interrupts_enabled(istate);
}
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();
-}
-
-
-#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 (thread_is_64bit(thr_act)) {
- x86_saved_state64_t *ssp;
-
- ssp = USER_REGS64(thr_act);
+ 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");
- panic("dump_regs: 64bit tasks not yet supported");
+ 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 {
- x86_saved_state32_t *ssp;
-
- 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);
-
- 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, thr_act->machine.iss);
- }
- dump_handlers(thr_act);
- dump_regs(thr_act);
- return((int)thr_act);
-}
-#endif
user_addr_t
get_useraddr(void)
#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
stack = old->kernel_stack;
if (stack == old->reserved_stack) {
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);
return;
{
/* 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.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.arg_store_valid);
-}
/*
* Duplicate one x86_debug_state32_t to another. "all" parameter
target->dr6 = src->dr6;
target->dr7 = src->dr7;
}
-
-boolean_t is_useraddr64_canonical(uint64_t addr64);
-
-boolean_t
-is_useraddr64_canonical(uint64_t addr64)
-{
- return IS_USERADDR64_CANONICAL(addr64);
-}
projects / apple / xnu.git / blobdiff