#include <sys/kdebug.h>
#include <kern/coalition.h>
#include <pexpert/device_tree.h>
+#include <arm/cpuid_internal.h>
#include <IOKit/IOPlatformExpert.h>
uint32_t LockTimeOut;
uint32_t LockTimeOutUsec;
+uint64_t TLockTimeOut;
uint64_t MutexSpin;
boolean_t is_clock_configured = FALSE;
{
int boot_arg;
- PE_parse_boot_argn("assert", &mach_assert, sizeof (mach_assert));
+ PE_parse_boot_argn("assert", &mach_assert, sizeof(mach_assert));
- if (PE_parse_boot_argn("preempt", &boot_arg, sizeof (boot_arg))) {
+ if (PE_parse_boot_argn("preempt", &boot_arg, sizeof(boot_arg))) {
default_preemption_rate = boot_arg;
}
- if (PE_parse_boot_argn("bg_preempt", &boot_arg, sizeof (boot_arg))) {
+ if (PE_parse_boot_argn("bg_preempt", &boot_arg, sizeof(boot_arg))) {
default_bg_preemption_rate = boot_arg;
}
char *
machine_boot_info(
- __unused char *buf,
- __unused vm_size_t size)
+ __unused char *buf,
+ __unused vm_size_t size)
{
- return (PE_boot_args());
+ return PE_boot_args();
}
void
debug_log_init();
clock_config();
is_clock_configured = TRUE;
- if (debug_enabled)
+ if (debug_enabled) {
pmap_map_globals();
+ }
}
-void
+void
slave_machine_init(__unused void *param)
{
- cpu_machine_init(); /* Initialize the processor */
- clock_init(); /* Init the clock */
+ cpu_machine_init(); /* Initialize the processor */
+ clock_init(); /* Init the clock */
}
/*
*/
thread_t
machine_processor_shutdown(
- __unused thread_t thread,
- void (*doshutdown) (processor_t),
- processor_t processor)
+ __unused thread_t thread,
+ void (*doshutdown)(processor_t),
+ processor_t processor)
{
- return (Shutdown_context(doshutdown, processor));
+ return Shutdown_context(doshutdown, processor);
}
/*
machine_info.max_cpus = max_cpus;
machine_info.physical_cpu_max = max_cpus;
machine_info.logical_cpu_max = max_cpus;
- if (max_cpus_initialized == MAX_CPUS_WAIT)
- thread_wakeup((event_t) & max_cpus_initialized);
+ if (max_cpus_initialized == MAX_CPUS_WAIT) {
+ thread_wakeup((event_t) &max_cpus_initialized);
+ }
max_cpus_initialized = MAX_CPUS_SET;
}
(void) ml_set_interrupts_enabled(current_state);
current_state = ml_set_interrupts_enabled(FALSE);
if (max_cpus_initialized != MAX_CPUS_SET) {
max_cpus_initialized = MAX_CPUS_WAIT;
- assert_wait((event_t) & max_cpus_initialized, THREAD_UNINT);
+ assert_wait((event_t) &max_cpus_initialized, THREAD_UNINT);
(void) thread_block(THREAD_CONTINUE_NULL);
}
(void) ml_set_interrupts_enabled(current_state);
- return (machine_info.max_cpus);
+ return machine_info.max_cpus;
}
/*
{
uint64_t abstime;
uint64_t mtxspin;
- uint64_t default_timeout_ns = NSEC_PER_SEC>>2;
+ uint64_t default_timeout_ns = NSEC_PER_SEC >> 2;
uint32_t slto;
- if (PE_parse_boot_argn("slto_us", &slto, sizeof (slto)))
+ if (PE_parse_boot_argn("slto_us", &slto, sizeof(slto))) {
default_timeout_ns = slto * NSEC_PER_USEC;
+ }
nanoseconds_to_absolutetime(default_timeout_ns, &abstime);
- LockTimeOutUsec = (uint32_t)(abstime / NSEC_PER_USEC);
+ LockTimeOutUsec = (uint32_t)(default_timeout_ns / NSEC_PER_USEC);
LockTimeOut = (uint32_t)abstime;
+ TLockTimeOut = LockTimeOut;
- if (PE_parse_boot_argn("mtxspin", &mtxspin, sizeof (mtxspin))) {
- if (mtxspin > USEC_PER_SEC>>4)
- mtxspin = USEC_PER_SEC>>4;
- nanoseconds_to_absolutetime(mtxspin*NSEC_PER_USEC, &abstime);
+ if (PE_parse_boot_argn("mtxspin", &mtxspin, sizeof(mtxspin))) {
+ if (mtxspin > USEC_PER_SEC >> 4) {
+ mtxspin = USEC_PER_SEC >> 4;
+ }
+ nanoseconds_to_absolutetime(mtxspin * NSEC_PER_USEC, &abstime);
} else {
- nanoseconds_to_absolutetime(10*NSEC_PER_USEC, &abstime);
+ nanoseconds_to_absolutetime(10 * NSEC_PER_USEC, &abstime);
}
MutexSpin = abstime;
}
void
ml_cpu_down(void)
{
- cpu_data_t *cpu_data_ptr;
+ cpu_data_t *cpu_data_ptr;
hw_atomic_sub(&machine_info.physical_cpu, 1);
hw_atomic_sub(&machine_info.logical_cpu, 1);
-
+
/*
* If we want to deal with outstanding IPIs, we need to
* do relatively early in the processor_doshutdown path,
unsigned int
ml_get_machine_mem(void)
{
- return (machine_info.memory_size);
+ return machine_info.memory_size;
}
/* Return max offset */
vm_map_offset_t
ml_get_max_offset(
- boolean_t is64,
+ boolean_t is64,
unsigned int option)
{
- unsigned int pmap_max_offset_option = 0;
+ unsigned int pmap_max_offset_option = 0;
switch (option) {
case MACHINE_MAX_OFFSET_DEFAULT:
pmap_max_offset_option = ARM_PMAP_MAX_OFFSET_DEFAULT;
- break;
- case MACHINE_MAX_OFFSET_MIN:
+ break;
+ case MACHINE_MAX_OFFSET_MIN:
pmap_max_offset_option = ARM_PMAP_MAX_OFFSET_MIN;
- break;
- case MACHINE_MAX_OFFSET_MAX:
+ break;
+ case MACHINE_MAX_OFFSET_MAX:
pmap_max_offset_option = ARM_PMAP_MAX_OFFSET_MAX;
- break;
- case MACHINE_MAX_OFFSET_DEVICE:
+ break;
+ case MACHINE_MAX_OFFSET_DEVICE:
pmap_max_offset_option = ARM_PMAP_MAX_OFFSET_DEVICE;
- break;
- default:
+ break;
+ default:
panic("ml_get_max_offset(): Illegal option 0x%x\n", option);
- break;
- }
+ break;
+ }
return pmap_max_offset(is64, pmap_max_offset_option);
}
void
ml_panic_trap_to_debugger(__unused const char *panic_format_str,
- __unused va_list *panic_args,
- __unused unsigned int reason,
- __unused void *ctx,
- __unused uint64_t panic_options_mask,
- __unused unsigned long panic_caller)
+ __unused va_list *panic_args,
+ __unused unsigned int reason,
+ __unused void *ctx,
+ __unused uint64_t panic_options_mask,
+ __unused unsigned long panic_caller)
{
return;
}
printf("CPU halted\n");
PEHaltRestart(kPEHaltCPU);
}
- while (1);
+ while (1) {
+ ;
+ }
}
__attribute__((noreturn))
*/
void
machine_signal_idle(
- processor_t processor)
+ processor_t processor)
{
cpu_signal(processor_to_cpu_datap(processor), SIGPnop, (void *)NULL, (void *)NULL);
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED, MACH_REMOTE_AST), processor->cpu_id, 0 /* nop */, 0, 0, 0);
void
machine_signal_idle_deferred(
- processor_t processor)
+ processor_t processor)
{
cpu_signal_deferred(processor_to_cpu_datap(processor));
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED, MACH_REMOTE_DEFERRED_AST), processor->cpu_id, 0 /* nop */, 0, 0, 0);
void
machine_signal_idle_cancel(
- processor_t processor)
+ processor_t processor)
{
cpu_signal_cancel(processor_to_cpu_datap(processor));
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_SCHED, MACH_REMOTE_CANCEL_AST), processor->cpu_id, 0 /* nop */, 0, 0, 0);
* Routine: ml_install_interrupt_handler
* Function: Initialize Interrupt Handler
*/
-void
+void
ml_install_interrupt_handler(
- void *nub,
- int source,
- void *target,
- IOInterruptHandler handler,
- void *refCon)
+ void *nub,
+ int source,
+ void *target,
+ IOInterruptHandler handler,
+ void *refCon)
{
cpu_data_t *cpu_data_ptr;
boolean_t current_state;
* Routine: ml_init_interrupt
* Function: Initialize Interrupts
*/
-void
+void
ml_init_interrupt(void)
{
}
* Routine: ml_init_timebase
* Function: register and setup Timebase, Decremeter services
*/
-void ml_init_timebase(
- void *args,
- tbd_ops_t tbd_funcs,
- vm_offset_t int_address,
- vm_offset_t int_value)
+void
+ml_init_timebase(
+ void *args,
+ tbd_ops_t tbd_funcs,
+ vm_offset_t int_address,
+ vm_offset_t int_value)
{
cpu_data_t *cpu_data_ptr;
assert(err == kSuccess);
while (kSuccess == DTIterateEntries(&iter, &child)) {
-
#if MACH_ASSERT
unsigned int propSize;
void *prop = NULL;
if (avail_cpus == 0) {
- if (kSuccess != DTGetProperty(child, "state", &prop, &propSize))
+ if (kSuccess != DTGetProperty(child, "state", &prop, &propSize)) {
panic("unable to retrieve state for cpu %u", avail_cpus);
+ }
- if (strncmp((char*)prop, "running", propSize) != 0)
+ if (strncmp((char*)prop, "running", propSize) != 0) {
panic("cpu 0 has not been marked as running!");
+ }
}
assert(kSuccess == DTGetProperty(child, "reg", &prop, &propSize));
assert(avail_cpus == *((uint32_t*)prop));
cpu_boot_arg = avail_cpus;
if (PE_parse_boot_argn("cpus", &cpu_boot_arg, sizeof(cpu_boot_arg)) &&
- (avail_cpus > cpu_boot_arg))
+ (avail_cpus > cpu_boot_arg)) {
avail_cpus = cpu_boot_arg;
+ }
- if (avail_cpus == 0)
+ if (avail_cpus == 0) {
panic("No cpus found!");
+ }
}
unsigned int
}
kern_return_t
-ml_processor_register(
- ml_processor_info_t * in_processor_info,
- processor_t * processor_out,
- ipi_handler_t * ipi_handler)
+ml_processor_register(ml_processor_info_t *in_processor_info,
+ processor_t * processor_out, ipi_handler_t *ipi_handler_out,
+ perfmon_interrupt_handler_func *pmi_handler_out)
{
cpu_data_t *this_cpu_datap;
boolean_t is_boot_cpu;
/* Fail the registration if the number of CPUs has been limited by boot-arg. */
if ((in_processor_info->phys_id >= avail_cpus) ||
- (in_processor_info->log_id > (uint32_t)ml_get_max_cpu_number()))
+ (in_processor_info->log_id > (uint32_t)ml_get_max_cpu_number())) {
return KERN_FAILURE;
+ }
if (in_processor_info->log_id != (uint32_t)ml_get_boot_cpu_number()) {
is_boot_cpu = FALSE;
this_cpu_datap->cpu_id = in_processor_info->cpu_id;
this_cpu_datap->cpu_console_buf = console_cpu_alloc(is_boot_cpu);
- if (this_cpu_datap->cpu_console_buf == (void *)(NULL))
+ if (this_cpu_datap->cpu_console_buf == (void *)(NULL)) {
goto processor_register_error;
+ }
if (!is_boot_cpu) {
- if (cpu_data_register(this_cpu_datap) != KERN_SUCCESS)
+ if (cpu_data_register(this_cpu_datap) != KERN_SUCCESS) {
goto processor_register_error;
+ }
}
this_cpu_datap->cpu_idle_notify = (void *) in_processor_info->processor_idle;
if (!is_boot_cpu) {
processor_init((struct processor *)this_cpu_datap->cpu_processor,
- this_cpu_datap->cpu_number, processor_pset(master_processor));
+ this_cpu_datap->cpu_number, processor_pset(master_processor));
if (this_cpu_datap->cpu_l2_access_penalty) {
/*
* preferentially.
*/
processor_set_primary(this_cpu_datap->cpu_processor,
- master_processor);
+ master_processor);
}
}
*processor_out = this_cpu_datap->cpu_processor;
- *ipi_handler = cpu_signal_handler;
- if (in_processor_info->idle_tickle != (idle_tickle_t *) NULL)
+ *ipi_handler_out = cpu_signal_handler;
+ *pmi_handler_out = NULL;
+ if (in_processor_info->idle_tickle != (idle_tickle_t *) NULL) {
*in_processor_info->idle_tickle = (idle_tickle_t) cpu_idle_tickle;
+ }
#if KPC
- if (kpc_register_cpu(this_cpu_datap) != TRUE)
+ if (kpc_register_cpu(this_cpu_datap) != TRUE) {
goto processor_register_error;
+ }
#endif
- if (!is_boot_cpu)
+ if (!is_boot_cpu) {
early_random_cpu_init(this_cpu_datap->cpu_number);
+ }
return KERN_SUCCESS;
#if KPC
kpc_unregister_cpu(this_cpu_datap);
#endif
- if (!is_boot_cpu)
+ if (!is_boot_cpu) {
cpu_data_free(this_cpu_datap);
+ }
return KERN_FAILURE;
}
void
ml_init_arm_debug_interface(
- void * in_cpu_datap,
- vm_offset_t virt_address)
+ void * in_cpu_datap,
+ vm_offset_t virt_address)
{
((cpu_data_t *)in_cpu_datap)->cpu_debug_interface_map = virt_address;
do_debugid();
*/
void
init_ast_check(
- __unused processor_t processor)
+ __unused processor_t processor)
{
}
*/
void
cause_ast_check(
- processor_t processor)
+ processor_t processor)
{
if (current_processor() != processor) {
cpu_signal(processor_to_cpu_datap(processor), SIGPast, (void *)NULL, (void *)NULL);
extern uint32_t cpu_idle_count;
-void ml_get_power_state(boolean_t *icp, boolean_t *pidlep) {
+void
+ml_get_power_state(boolean_t *icp, boolean_t *pidlep)
+{
*icp = ml_at_interrupt_context();
*pidlep = (cpu_idle_count == real_ncpus);
}
* Routine: ml_cause_interrupt
* Function: Generate a fake interrupt
*/
-void
+void
ml_cause_interrupt(void)
{
- return; /* BS_XXX */
+ return; /* BS_XXX */
}
/* Map memory map IO space */
vm_offset_t
ml_io_map(
- vm_offset_t phys_addr,
- vm_size_t size)
+ vm_offset_t phys_addr,
+ vm_size_t size)
{
- return (io_map(phys_addr, size, VM_WIMG_IO));
+ return io_map(phys_addr, size, VM_WIMG_IO);
}
vm_offset_t
ml_io_map_wcomb(
- vm_offset_t phys_addr,
- vm_size_t size)
+ vm_offset_t phys_addr,
+ vm_size_t size)
{
- return (io_map(phys_addr, size, VM_WIMG_WCOMB));
+ return io_map(phys_addr, size, VM_WIMG_WCOMB);
}
/* boot memory allocation */
-vm_offset_t
+vm_offset_t
ml_static_malloc(
- __unused vm_size_t size)
+ __unused vm_size_t size)
{
- return ((vm_offset_t) NULL);
+ return (vm_offset_t) NULL;
}
vm_map_address_t
ml_map_high_window(
- vm_offset_t phys_addr,
- vm_size_t len)
+ vm_offset_t phys_addr,
+ vm_size_t len)
{
return pmap_map_high_window_bd(phys_addr, len, VM_PROT_READ | VM_PROT_WRITE);
}
vm_offset_t
ml_static_ptovirt(
- vm_offset_t paddr)
+ vm_offset_t paddr)
{
return phystokv(paddr);
}
vm_offset_t
ml_static_vtop(
- vm_offset_t vaddr)
+ vm_offset_t vaddr)
{
- if (((vm_address_t)(vaddr) - gVirtBase) >= gPhysSize)
+ if (((vm_address_t)(vaddr) - gVirtBase) >= gPhysSize) {
panic("ml_static_ptovirt(): illegal vaddr: %p\n", (void*)vaddr);
- return ((vm_address_t)(vaddr) - gVirtBase + gPhysBase);
+ }
+ return (vm_address_t)(vaddr) - gVirtBase + gPhysBase;
}
vm_offset_t
ppnum_t ppn;
kern_return_t result = KERN_SUCCESS;
- if (vaddr < VM_MIN_KERNEL_ADDRESS)
+ if (vaddr < VM_MIN_KERNEL_ADDRESS) {
return KERN_FAILURE;
+ }
assert((vaddr & (ARM_PGBYTES - 1)) == 0); /* must be page aligned */
}
for (vaddr_cur = vaddr;
- vaddr_cur < ((vaddr + size) & ~ARM_PGMASK);
- vaddr_cur += ARM_PGBYTES) {
+ vaddr_cur < ((vaddr + size) & ~ARM_PGMASK);
+ vaddr_cur += ARM_PGBYTES) {
ppn = pmap_find_phys(kernel_pmap, vaddr_cur);
if (ppn != (vm_offset_t) NULL) {
tt_entry_t *ttp = &kernel_pmap->tte[ttenum(vaddr_cur)];
}
}
- if (vaddr_cur > vaddr)
+ if (vaddr_cur > vaddr) {
flush_mmu_tlb_region(vaddr, (vm_size_t)(vaddr_cur - vaddr));
+ }
return result;
}
*/
void
ml_static_mfree(
- vm_offset_t vaddr,
- vm_size_t size)
+ vm_offset_t vaddr,
+ vm_size_t size)
{
vm_offset_t vaddr_cur;
ppnum_t ppn;
uint32_t freed_pages = 0;
/* It is acceptable (if bad) to fail to free. */
- if (vaddr < VM_MIN_KERNEL_ADDRESS)
+ if (vaddr < VM_MIN_KERNEL_ADDRESS) {
return;
+ }
- assert((vaddr & (PAGE_SIZE - 1)) == 0); /* must be page aligned */
+ assert((vaddr & (PAGE_SIZE - 1)) == 0); /* must be page aligned */
for (vaddr_cur = vaddr;
- vaddr_cur < trunc_page_32(vaddr + size);
- vaddr_cur += PAGE_SIZE) {
+ vaddr_cur < trunc_page_32(vaddr + size);
+ vaddr_cur += PAGE_SIZE) {
ppn = pmap_find_phys(kernel_pmap, vaddr_cur);
if (ppn != (vm_offset_t) NULL) {
/*
vm_page_wire_count -= freed_pages;
vm_page_wire_count_initial -= freed_pages;
vm_page_unlock_queues();
-#if DEBUG
+#if DEBUG
kprintf("ml_static_mfree: Released 0x%x pages at VA %p, size:0x%llx, last ppn: 0x%x\n", freed_pages, (void *)vaddr, (uint64_t)size, ppn);
#endif
}
* assumed to be wired; e.g., no attempt is made to guarantee that the
* translations obtained remain valid for the duration of the copy process.
*/
-vm_size_t
+vm_size_t
ml_nofault_copy(vm_offset_t virtsrc, vm_offset_t virtdst, vm_size_t size)
{
addr64_t cur_phys_dst, cur_phys_src;
uint32_t count, nbytes = 0;
while (size > 0) {
- if (!(cur_phys_src = kvtophys(virtsrc)))
+ if (!(cur_phys_src = kvtophys(virtsrc))) {
break;
- if (!(cur_phys_dst = kvtophys(virtdst)))
+ }
+ if (!(cur_phys_dst = kvtophys(virtdst))) {
break;
+ }
if (!pmap_valid_address(trunc_page_64(cur_phys_dst)) ||
- !pmap_valid_address(trunc_page_64(cur_phys_src)))
+ !pmap_valid_address(trunc_page_64(cur_phys_src))) {
break;
+ }
count = PAGE_SIZE - (cur_phys_src & PAGE_MASK);
- if (count > (PAGE_SIZE - (cur_phys_dst & PAGE_MASK)))
+ if (count > (PAGE_SIZE - (cur_phys_dst & PAGE_MASK))) {
count = PAGE_SIZE - (cur_phys_dst & PAGE_MASK);
- if (count > size)
+ }
+ if (count > size) {
count = size;
+ }
bcopy_phys(cur_phys_src, cur_phys_dst, count);
* FALSE otherwise.
*/
-boolean_t ml_validate_nofault(
+boolean_t
+ml_validate_nofault(
vm_offset_t virtsrc, vm_size_t size)
{
addr64_t cur_phys_src;
uint32_t count;
while (size > 0) {
- if (!(cur_phys_src = kvtophys(virtsrc)))
+ if (!(cur_phys_src = kvtophys(virtsrc))) {
return FALSE;
- if (!pmap_valid_address(trunc_page_64(cur_phys_src)))
+ }
+ if (!pmap_valid_address(trunc_page_64(cur_phys_src))) {
return FALSE;
+ }
count = (uint32_t)(PAGE_SIZE - (cur_phys_src & PAGE_MASK));
- if (count > size)
+ if (count > size) {
count = (uint32_t)size;
+ }
virtsrc += count;
size -= count;
}
void
-thread_tell_urgency(__unused int urgency,
- __unused uint64_t rt_period,
- __unused uint64_t rt_deadline,
- __unused uint64_t sched_latency,
- __unused thread_t nthread)
+thread_tell_urgency(__unused thread_urgency_t urgency,
+ __unused uint64_t rt_period,
+ __unused uint64_t rt_deadline,
+ __unused uint64_t sched_latency,
+ __unused thread_t nthread)
{
}
processor_t
machine_choose_processor(__unused processor_set_t pset, processor_t processor)
{
- return (processor);
+ return processor;
}
-boolean_t machine_timeout_suspended(void) {
+boolean_t
+machine_timeout_suspended(void)
+{
return FALSE;
}
-kern_return_t
-ml_interrupt_prewarm(__unused uint64_t deadline)
+kern_return_t
+ml_interrupt_prewarm(__unused uint64_t deadline)
{
return KERN_FAILURE;
}
}
}
-void ml_delay_on_yield(void) {}
+void
+ml_delay_on_yield(void)
+{
+}
-boolean_t ml_thread_is64bit(thread_t thread)
+boolean_t
+ml_thread_is64bit(thread_t thread)
{
- return (thread_is_64bit_addr(thread));
+ return thread_is_64bit_addr(thread);
}
-void ml_timer_evaluate(void) {
+void
+ml_timer_evaluate(void)
+{
}
boolean_t
-ml_timer_forced_evaluation(void) {
+ml_timer_forced_evaluation(void)
+{
return FALSE;
}
uint64_t
-ml_energy_stat(__unused thread_t t) {
+ml_energy_stat(__unused thread_t t)
+{
return 0;
}
void
-ml_gpu_stat_update(__unused uint64_t gpu_ns_delta) {
+ml_gpu_stat_update(__unused uint64_t gpu_ns_delta)
+{
#if CONFIG_EMBEDDED
/*
* For now: update the resource coalition stats of the
}
uint64_t
-ml_gpu_stat(__unused thread_t t) {
+ml_gpu_stat(__unused thread_t t)
+{
return 0;
}
timer_state_event(boolean_t switch_to_kernel)
{
thread_t thread = current_thread();
- if (!thread->precise_user_kernel_time) return;
+ if (!thread->precise_user_kernel_time) {
+ return;
+ }
processor_data_t *pd = &getCpuDatap()->cpu_processor->processor_data;
uint64_t now = ml_get_timebase();
}
#endif /* !CONFIG_SKIP_PRECISE_USER_KERNEL_TIME */
+uint32_t
+get_arm_cpu_version(void)
+{
+ uint32_t value = machine_read_midr();
+
+ /* Compose the register values into 8 bits; variant[7:4], revision[3:0]. */
+ return ((value & MIDR_REV_MASK) >> MIDR_REV_SHIFT) | ((value & MIDR_VAR_MASK) >> (MIDR_VAR_SHIFT - 4));
+}
+
boolean_t
user_cont_hwclock_allowed(void)
{
uintptr_t
arm_user_protect_begin(thread_t thread)
{
- uintptr_t ttbr0, asid = 0; // kernel asid
+ uintptr_t ttbr0, asid = 0; // kernel asid
- ttbr0 = __builtin_arm_mrc(15,0,2,0,0); // Get TTBR0
- if (ttbr0 != thread->machine.kptw_ttb) {
- __builtin_arm_mcr(15,0,thread->machine.kptw_ttb,2,0,0); // Set TTBR0
- __builtin_arm_mcr(15,0,asid,13,0,1); // Set CONTEXTIDR
- __builtin_arm_isb(ISB_SY);
- }
- return ttbr0;
+ ttbr0 = __builtin_arm_mrc(15, 0, 2, 0, 0); // Get TTBR0
+ if (ttbr0 != thread->machine.kptw_ttb) {
+ __builtin_arm_mcr(15, 0, thread->machine.kptw_ttb, 2, 0, 0); // Set TTBR0
+ __builtin_arm_mcr(15, 0, asid, 13, 0, 1); // Set CONTEXTIDR
+ __builtin_arm_isb(ISB_SY);
+ }
+ return ttbr0;
}
void
arm_user_protect_end(thread_t thread, uintptr_t ttbr0, boolean_t disable_interrupts)
{
- if ((ttbr0 != thread->machine.kptw_ttb) && (thread->machine.uptw_ttb != thread->machine.kptw_ttb)) {
- if (disable_interrupts)
- __asm__ volatile ("cpsid if" ::: "memory"); // Disable FIQ/IRQ
- __builtin_arm_mcr(15,0,thread->machine.uptw_ttb,2,0,0); // Set TTBR0
- __builtin_arm_mcr(15,0,thread->machine.asid,13,0,1); // Set CONTEXTIDR with thread asid
- __builtin_arm_dsb(DSB_ISH);
- __builtin_arm_isb(ISB_SY);
- }
+ if ((ttbr0 != thread->machine.kptw_ttb) && (thread->machine.uptw_ttb != thread->machine.kptw_ttb)) {
+ if (disable_interrupts) {
+ __asm__ volatile ("cpsid if" ::: "memory"); // Disable FIQ/IRQ
+ }
+ __builtin_arm_mcr(15, 0, thread->machine.uptw_ttb, 2, 0, 0); // Set TTBR0
+ __builtin_arm_mcr(15, 0, thread->machine.asid, 13, 0, 1); // Set CONTEXTIDR with thread asid
+ __builtin_arm_dsb(DSB_ISH);
+ __builtin_arm_isb(ISB_SY);
+ }
}
#endif // __ARM_USER_PROTECT__
projects / apple / xnu.git / blobdiff