#include <mach_rt.h>
#include <mach_debug.h>
#include <mach_ldebug.h>
#include <sys/kdebug.h>
#include <mach/kern_return.h>
#include <mach/thread_status.h>
#include <mach/vm_param.h>
#include <kern/counters.h>
#include <kern/kalloc.h>
#include <kern/mach_param.h>
#include <kern/processor.h>
#include <kern/cpu_data.h>
#include <kern/cpu_number.h>
#include <kern/task.h>
#include <kern/thread.h>
#include <kern/sched_prim.h>
#include <kern/misc_protos.h>
#include <kern/assert.h>
#include <kern/spl.h>
#include <kern/machine.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/cpu_data.h>
#include <i386/cpu_number.h>
#include <i386/eflags.h>
#include <i386/proc_reg.h>
#include <i386/fpu.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/machine_routines.h>
#include <i386/lapic.h>
#if CONFIG_COUNTERS
#include <pmc/pmc.h>
#endif
unsigned int _MachineStateCount[] = {
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
};
zone_t iss_zone;
zone_t ids_zone;
extern void Thread_continue(void);
extern void Load_context(
thread_t thread);
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, x86_thread_state64_t *ts);
static int
set_thread_state32(thread_t thread, x86_thread_state32_t *ts);
static int
set_thread_state64(thread_t thread, x86_thread_state64_t *ts);
#if CONFIG_COUNTERS
static inline void
machine_pmc_cswitch(thread_t , thread_t );
static inline boolean_t
machine_thread_pmc_eligible(thread_t);
static inline void
pmc_swi(thread_t , thread_t );
static inline boolean_t
machine_thread_pmc_eligible(thread_t t) {
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;
pal_pmc_swi();
}
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);
}
}
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
static boolean_t
dr7_is_valid(uint32_t *dr7)
{
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);
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);
for (i = 0; i < 4; i++)
if (((((*dr7 >> (16 + i*4))) & 0x3) == 0) &&
((((*dr7 >> (18 + i*4))) & 0x3) != 0))
return (FALSE);
*dr7 |= 0x1 << 10;
*dr7 &= ~(0x1 << 11);
*dr7 &= ~(0x1 << 12);
*dr7 &= ~(0x1 << 14);
*dr7 &= ~(0x1 << 15);
if (*dr7 & 0x2)
return (FALSE);
if (*dr7 & (0x2<<2))
return (FALSE);
if (*dr7 & (0x2<<4))
return (FALSE);
if (*dr7 & (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)
{
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__)
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))
return FALSE;
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;
return TRUE;
}
static kern_return_t
set_debug_state32(thread_t thread, x86_debug_state32_t *ds)
{
x86_debug_state32_t *ids;
pcb_t pcb;
pcb = THREAD_TO_PCB(thread);
ids = pcb->ids;
if (debug_state_is_valid32(ds) != TRUE) {
return KERN_INVALID_ARGUMENT;
}
if (ids == NULL) {
ids = zalloc(ids_zone);
bzero(ids, sizeof *ids);
simple_lock(&pcb->lock);
if (pcb->ids == NULL) {
pcb->ids = ids;
simple_unlock(&pcb->lock);
} else {
simple_unlock(&pcb->lock);
zfree(ids_zone, ids);
}
}
copy_debug_state32(ds, ids, FALSE);
return (KERN_SUCCESS);
}
static kern_return_t
set_debug_state64(thread_t thread, x86_debug_state64_t *ds)
{
x86_debug_state64_t *ids;
pcb_t pcb;
pcb = THREAD_TO_PCB(thread);
ids = pcb->ids;
if (debug_state_is_valid64(ds) != TRUE) {
return KERN_INVALID_ARGUMENT;
}
if (ids == NULL) {
ids = zalloc(ids_zone);
bzero(ids, sizeof *ids);
simple_lock(&pcb->lock);
if (pcb->ids == NULL) {
pcb->ids = ids;
simple_unlock(&pcb->lock);
} else {
simple_unlock(&pcb->lock);
zfree(ids_zone, ids);
}
}
copy_debug_state64(ds, ids, FALSE);
return (KERN_SUCCESS);
}
static void
get_debug_state32(thread_t thread, x86_debug_state32_t *ds)
{
x86_debug_state32_t *saved_state;
saved_state = thread->machine.ids;
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;
if (saved_state) {
copy_debug_state64(saved_state, ds, TRUE);
} else
bzero(ds, sizeof *ds);
}
void
consider_machine_collect(void)
{
}
void
consider_machine_adjust(void)
{
}
void
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);
}
thread_t
machine_switch_context(
thread_t old,
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
fpu_save_context(old);
old->machine.specFlags &= ~OnProc;
new->machine.specFlags |= OnProc;
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);
}
PMAP_SWITCH_CONTEXT(old, new, cpu_number());
act_machine_switch_pcb(old, new);
return(Switch_context(old, continuation, new));
}
thread_t
machine_processor_shutdown(
thread_t thread,
void (*doshutdown)(processor_t),
processor_t processor)
{
#if CONFIG_VMX
vmx_suspend();
#endif
fpu_save_context(thread);
PMAP_SWITCH_CONTEXT(thread, processor->idle_thread, cpu_number());
return(Shutdown_context(thread, doshutdown, processor));
}
kern_return_t
machine_thread_state_initialize(
thread_t thread)
{
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;
}
uint32_t
get_eflags_exportmask(void)
{
return EFL_USER_SET;
}
static void
get_exception_state64(thread_t thread, x86_exception_state64_t *es)
{
x86_saved_state64_t *saved_state;
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;
}
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);
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
ts->ss = USER_DS;
ts->ds = USER_DS;
ts->es = USER_DS;
#endif
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 ((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, x86_thread_state64_t *ts)
{
x86_saved_state64_t *saved_state;
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;
saved_state->isf.cs = USER64_CS;
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, x86_thread_state64_t *ts)
{
x86_saved_state64_t *saved_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;
ts->fs = saved_state->fs;
ts->gs = saved_state->gs;
}
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);
if (thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
state = (x86_saved_state32_t *) tstate;
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);
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 ((saved_state->efl & EFL_TF) && state->cs == SYSENTER_CS)
state->cs = SYSENTER_TF_CS;
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(thr_act))
return(KERN_INVALID_ARGUMENT);
state = (x86_saved_state64_t *) tstate;
if (!valid_user_code_selector(state->isf.cs))
return KERN_INVALID_ARGUMENT;
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);
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;
saved_state->isf.cs = state->isf.cs;
saved_state->isf.ss = state->isf.ss;
saved_state->fs = state->fs;
saved_state->gs = state->gs;
break;
}
case x86_FLOAT_STATE32:
{
if (count != x86_FLOAT_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
if (thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
return fpu_set_fxstate(thr_act, tstate, flavor);
}
case x86_FLOAT_STATE64:
{
if (count != x86_FLOAT_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_FLOAT_STATE:
{
x86_float_state_t *state;
if (count != x86_FLOAT_STATE_COUNT)
return(KERN_INVALID_ARGUMENT);
state = (x86_float_state_t *)tstate;
if (state->fsh.flavor == x86_FLOAT_STATE64 && state->fsh.count == x86_FLOAT_STATE64_COUNT &&
thread_is_64bit(thr_act)) {
return fpu_set_fxstate(thr_act, (thread_state_t)&state->ufs.fs64, 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, x86_FLOAT_STATE32);
}
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_THREAD_STATE32:
{
if (count != x86_THREAD_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
if (thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
return set_thread_state32(thr_act, (x86_thread_state32_t *)tstate);
}
case x86_THREAD_STATE64:
{
if (count != x86_THREAD_STATE64_COUNT)
return(KERN_INVALID_ARGUMENT);
if (!thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
return set_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
}
case x86_THREAD_STATE:
{
x86_thread_state_t *state;
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(thr_act)) {
return set_thread_state64(thr_act, &state->uts.ts64);
} else if (state->tsh.flavor == x86_THREAD_STATE32 &&
state->tsh.count == x86_THREAD_STATE32_COUNT &&
!thread_is_64bit(thr_act)) {
return set_thread_state32(thr_act, &state->uts.ts32);
} else
return(KERN_INVALID_ARGUMENT);
break;
}
case x86_DEBUG_STATE32:
{
x86_debug_state32_t *state;
kern_return_t ret;
if (thread_is_64bit(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(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(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(thr_act)) {
ret = set_debug_state32(thr_act, &state->uds.ds32);
}
return ret;
}
default:
return(KERN_INVALID_ARGUMENT);
}
return(KERN_SUCCESS);
}
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 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(thr_act))
return(KERN_INVALID_ARGUMENT);
state = (x86_saved_state32_t *) tstate;
saved_state = USER_REGS32(thr_act);
*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(thr_act))
return(KERN_INVALID_ARGUMENT);
state = (x86_saved_state64_t *)tstate;
saved_state = USER_REGS64(thr_act);
*state = *saved_state;
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(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(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;
if (thread_is_64bit(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:
{
if (*count != x86_AVX_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
if (thread_is_64bit(thr_act))
return(KERN_INVALID_ARGUMENT);
*count = x86_AVX_STATE32_COUNT;
return fpu_get_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);
*count = x86_AVX_STATE64_COUNT;
return fpu_get_fxstate(thr_act, tstate, flavor);
}
case x86_THREAD_STATE32:
{
if (*count < x86_THREAD_STATE32_COUNT)
return(KERN_INVALID_ARGUMENT);
if (thread_is_64bit(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(thr_act))
return(KERN_INVALID_ARGUMENT);
*count = x86_THREAD_STATE64_COUNT;
get_thread_state64(thr_act, (x86_thread_state64_t *)tstate);
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(thr_act)) {
state->tsh.flavor = x86_THREAD_STATE64;
state->tsh.count = x86_THREAD_STATE64_COUNT;
get_thread_state64(thr_act, &state->uts.ts64);
} 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(thr_act))
return(KERN_INVALID_ARGUMENT);
*count = x86_EXCEPTION_STATE32_COUNT;
get_exception_state32(thr_act, (x86_exception_state32_t *)tstate);
((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(thr_act))
return(KERN_INVALID_ARGUMENT);
*count = x86_EXCEPTION_STATE64_COUNT;
get_exception_state64(thr_act, (x86_exception_state64_t *)tstate);
((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(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(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(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 < x86_DEBUG_STATE_COUNT)
return(KERN_INVALID_ARGUMENT);
state = (x86_debug_state_t *)tstate;
bzero(state, sizeof *state);
if (thread_is_64bit(thr_act)) {
state->dsh.flavor = x86_DEBUG_STATE64;
state->dsh.count = x86_DEBUG_STATE64_COUNT;
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;
}
default:
return(KERN_INVALID_ARGUMENT);
}
return(KERN_SUCCESS);
}
kern_return_t
machine_thread_get_kern_state(
thread_t thread,
thread_flavor_t flavor,
thread_state_t tstate,
mach_msg_type_number_t *count)
{
x86_saved_state_t *int_state = current_cpu_datap()->cpu_int_state;
if (thread != current_thread() || int_state == NULL)
return KERN_FAILURE;
switch (flavor) {
case x86_THREAD_STATE32: {
x86_thread_state32_t *state;
x86_saved_state32_t *saved_state;
if (!is_saved_state32(int_state) ||
*count < x86_THREAD_STATE32_COUNT)
return (KERN_INVALID_ARGUMENT);
state = (x86_thread_state32_t *) tstate;
saved_state = saved_state32(int_state);
state->eax = saved_state->eax;
state->ebx = saved_state->ebx;
state->ecx = saved_state->ecx;
state->edx = saved_state->edx;
state->edi = saved_state->edi;
state->esi = saved_state->esi;
state->ebp = saved_state->ebp;
state->esp = saved_state->uesp;
state->eflags = saved_state->efl;
state->eip = saved_state->eip;
state->cs = saved_state->cs;
state->ss = saved_state->ss;
state->ds = saved_state->ds & 0xffff;
state->es = saved_state->es & 0xffff;
state->fs = saved_state->fs & 0xffff;
state->gs = saved_state->gs & 0xffff;
*count = x86_THREAD_STATE32_COUNT;
return KERN_SUCCESS;
}
case x86_THREAD_STATE64: {
x86_thread_state64_t *state;
x86_saved_state64_t *saved_state;
if (!is_saved_state64(int_state) ||
*count < x86_THREAD_STATE64_COUNT)
return (KERN_INVALID_ARGUMENT);
state = (x86_thread_state64_t *) tstate;
saved_state = saved_state64(int_state);
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;
}
case x86_THREAD_STATE: {
x86_thread_state_t *state = NULL;
if (*count < x86_THREAD_STATE_COUNT)
return (KERN_INVALID_ARGUMENT);
state = (x86_thread_state_t *) tstate;
if (is_saved_state32(int_state)) {
x86_saved_state32_t *saved_state = saved_state32(int_state);
state->tsh.flavor = x86_THREAD_STATE32;
state->tsh.count = x86_THREAD_STATE32_COUNT;
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;
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");
}
*count = x86_THREAD_STATE_COUNT;
return KERN_SUCCESS;
}
}
return KERN_FAILURE;
}
void
machine_thread_switch_addrmode(thread_t thread)
{
disable_preemption();
machine_thread_create(thread, thread->task);
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
act_machine_switch_pcb(NULL, thread);
ml_set_interrupts_enabled(istate);
}
enable_preemption();
}
void
machine_set_current_thread(thread_t thread)
{
current_cpu_datap()->cpu_active_thread = thread;
}
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
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__)
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);
panic("dump_regs: 64bit tasks not yet supported");
} else {
x86_saved_state32_t *ssp;
ssp = USER_REGS32(thr_act);
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);
}
}
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)
{
thread_t thr_act = current_thread();
if (thread_is_64bit(thr_act)) {
x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thr_act);
return(iss64->isf.rip);
} else {
x86_saved_state32_t *iss32;
iss32 = USER_REGS32(thr_act);
return(iss32->eip);
}
}
vm_offset_t
machine_stack_detach(thread_t thread)
{
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);
stack = thread->kernel_stack;
thread->kernel_stack = 0;
return (stack);
}
void
machine_stack_attach(
thread_t thread,
vm_offset_t stack)
{
struct x86_kernel_state *statep;
KERNEL_DEBUG(MACHDBG_CODE(DBG_MACH_SCHED, MACH_STACK_ATTACH),
(uintptr_t)thread_tid(thread), thread->priority,
thread->sched_pri, 0, 0);
assert(stack);
thread->kernel_stack = stack;
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);
#else
statep->k_eip = (unsigned long) Thread_continue;
statep->k_ebx = (unsigned long) thread_continue;
statep->k_esp = (unsigned long) (STACK_IKS(stack) - 1);
#endif
return;
}
void
machine_stack_handoff(thread_t old,
thread_t new)
{
vm_offset_t stack;
assert(new);
assert(old);
#if CONFIG_COUNTERS
machine_pmc_cswitch(old, new);
#endif
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;
new->kernel_stack = stack;
fpu_save_context(old);
old->machine.specFlags &= ~OnProc;
new->machine.specFlags |= OnProc;
PMAP_SWITCH_CONTEXT(old, new, cpu_number());
act_machine_switch_pcb(old, new);
machine_set_current_thread(new);
return;
}
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)
{
kern_return_t kret;
mach_msg_type_number_t val;
thread_t thr_act = current_thread();
if (thread_is_64bit(thr_act)) {
struct x86_act_context64 *ic64;
ic64 = (struct x86_act_context64 *)kalloc(sizeof(struct x86_act_context64));
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(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(ic32, sizeof(struct x86_act_context32));
return((void *)0);
}
return(ic32);
}
}
void
act_thread_catt(void *ctx)
{
thread_t thr_act = current_thread();
kern_return_t kret;
if (ctx == (void *)NULL)
return;
if (thread_is_64bit(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)
{
}
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);
}
void
copy_debug_state32(
x86_debug_state32_t *src,
x86_debug_state32_t *target,
boolean_t all)
{
if (all) {
target->dr4 = src->dr4;
target->dr5 = src->dr5;
}
target->dr0 = src->dr0;
target->dr1 = src->dr1;
target->dr2 = src->dr2;
target->dr3 = src->dr3;
target->dr6 = src->dr6;
target->dr7 = src->dr7;
}
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;
}