xnu-7195.101.1.tar.gz

[apple/xnu.git] / osfmk / arm / misc_protos.h

diff --git a/osfmk/arm/misc_protos.h b/osfmk/arm/misc_protos.h
index a36edabcb46456376da61c1a3d9681df2c5ccd0a..76308798b60a83047b9b399cbc365569967a9090 100644 (file)
--- a/osfmk/arm/misc_protos.h
+++ b/osfmk/arm/misc_protos.h
@@ -29,39 +29,66 @@
  * @OSF_COPYRIGHT@
  */
 
-#ifndef        _ARM_MISC_PROTOS_H_
-#define        _ARM_MISC_PROTOS_H_
+#ifndef _ARM_MISC_PROTOS_H_
+#define _ARM_MISC_PROTOS_H_
 
 #include <kern/kern_types.h>
 
-extern processor_t cpu_processor_alloc(boolean_t is_boot_cpu);
-extern void cpu_processor_free(processor_t proc);
+typedef struct boot_args boot_args;
+/* The address of the end of the kernelcache. */
+extern vm_offset_t end_kern;
+/* The lowest address in the kernelcache. */
+extern vm_offset_t segLOWEST;
 
 extern void machine_startup(__unused boot_args *args) __attribute__((noinline));
-extern void machine_lockdown_preflight(void);
-extern void machine_lockdown(void);
+
+
+extern void arm_auxkc_init(void *mh, void *base);
+
 extern void arm_vm_init(uint64_t memory_size, boot_args *args);
 extern void arm_vm_prot_init(boot_args *args);
 extern void arm_vm_prot_finalize(boot_args *args);
 
-
 extern kern_return_t DebuggerXCallEnter(boolean_t);
 extern void DebuggerXCallReturn(void);
 
 #if __arm64__ && DEBUG
 extern void dump_kva_space(void);
-#endif
+#endif /* __arm64__ && DEBUG */
 
 extern void Load_context(thread_t);
 extern void Idle_load_context(void) __attribute__((noreturn));
 extern thread_t Switch_context(thread_t, thread_continue_t, thread_t);
 extern thread_t Shutdown_context(void (*doshutdown)(processor_t), processor_t  processor);
-extern void Call_continuation(thread_continue_t, void *, wait_result_t, boolean_t enable_interrupts);
+extern void __dead2 Call_continuation(thread_continue_t, void *, wait_result_t, boolean_t enable_interrupts);
+
+
+/**
+ * Indicate during a context-switch event that we have updated some CPU
+ * state which requires a later context-sync event.
+ *
+ * On ARMv8.5 and later CPUs, this function sets a flag that will trigger an
+ * explicit isb instruction sometime before the upcoming eret instruction.
+ *
+ * Prior to ARMv8.5, the eret instruction itself is always synchronizing, and
+ * this function is an empty stub which serves only as documentation.
+ */
+#if __ARM_ARCH_8_5__
+extern void arm_context_switch_requires_sync(void);
+#else
+static inline void
+arm_context_switch_requires_sync(void)
+{
+}
+#endif /* __ARM_ARCH_8_5__ */
+
+#if __has_feature(ptrauth_calls)
+extern boolean_t arm_user_jop_disabled(void);
+#endif /* __has_feature(ptrauth_calls) */
 
 extern void DebuggerCall(unsigned int reason, void *ctx);
 extern void DebuggerXCall(void *ctx);
 
-extern int _copyinstr(const user_addr_t user_addr, char *kernel_addr, vm_size_t max, vm_size_t *actual);
 extern int copyout_kern(const char *kernel_addr, user_addr_t user_addr, vm_size_t nbytes);
 extern int copyin_kern(const user_addr_t user_addr, char *kernel_addr, vm_size_t nbytes);
 
@@ -71,11 +98,11 @@ extern void dcache_incoherent_io_flush64(addr64_t pa, unsigned int count, unsign
 extern void dcache_incoherent_io_store64(addr64_t pa, unsigned int count, unsigned int remaining, unsigned int *res);
 
 #if defined(__arm__)
-extern void copy_debug_state(arm_debug_state_t *src, arm_debug_state_t *target, __unused boolean_t all);
+extern void copy_debug_state(arm_debug_state_t * src, arm_debug_state_t *target, __unused boolean_t all);
 #elif defined(__arm64__)
-extern void copy_legacy_debug_state(arm_legacy_debug_state_t *src, arm_legacy_debug_state_t *target, __unused boolean_t all);
-extern void copy_debug_state32(arm_debug_state32_t *src, arm_debug_state32_t *target, __unused boolean_t all);
-extern void copy_debug_state64(arm_debug_state64_t *src, arm_debug_state64_t *target, __unused boolean_t all);
+extern void copy_legacy_debug_state(arm_legacy_debug_state_t * src, arm_legacy_debug_state_t *target, __unused boolean_t all);
+extern void copy_debug_state32(arm_debug_state32_t * src, arm_debug_state32_t *target, __unused boolean_t all);
+extern void copy_debug_state64(arm_debug_state64_t * src, arm_debug_state64_t *target, __unused boolean_t all);
 
 extern boolean_t debug_legacy_state_is_valid(arm_legacy_debug_state_t *ds);
 extern boolean_t debug_state_is_valid32(arm_debug_state32_t *ds);
@@ -83,14 +110,18 @@ extern boolean_t debug_state_is_valid64(arm_debug_state64_t *ds);
 
 extern int copyio_check_user_addr(user_addr_t user_addr, vm_size_t nbytes);
 
+/*
+ * Get a quick virtual mapping of a physical page and run a callback on that
+ * page's virtual address.
+ */
+extern int apply_func_phys(addr64_t src64, vm_size_t bytes, int (*func)(void * buffer, vm_size_t bytes, void * arg), void * arg);
+
 /* Top-Byte-Ignore */
-extern boolean_t user_tbi;
-#define TBI_MASK               0xff00000000000000
-#define user_tbi_enabled()     (user_tbi)
-#define tbi_clear(addr)                ((addr) & ~(TBI_MASK))
+#define TBI_MASK           0xff00000000000000
+#define tbi_clear(addr)    ((addr) & ~(TBI_MASK))
 
-#else
+#else /* !defined(__arm__) && !defined(__arm64__) */
 #error Unknown architecture.
-#endif
+#endif /* defined(__arm__) */
 
 #endif /* _ARM_MISC_PROTOS_H_ */