/*
- * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-#ifdef MACH_BSD
+#ifdef MACH_BSD
#include <mach_debug.h>
#include <mach_ldebug.h>
#include <../bsd/sys/sysent.h>
#ifdef MACH_BSD
-extern void mach_kauth_cred_uthread_update(void);
+extern void mach_kauth_cred_uthread_update(void);
extern void throttle_lowpri_io(int);
#endif
*/
kern_return_t
thread_userstack(
- __unused thread_t thread,
- int flavor,
- thread_state_t tstate,
- __unused unsigned int count,
- mach_vm_offset_t *user_stack,
- int *customstack,
- __unused boolean_t is64bit
-)
+ __unused thread_t thread,
+ int flavor,
+ thread_state_t tstate,
+ __unused unsigned int count,
+ mach_vm_offset_t *user_stack,
+ int *customstack,
+ __unused boolean_t is64bit
+ )
{
- if (customstack)
+ if (customstack) {
*customstack = 0;
+ }
switch (flavor) {
case x86_THREAD_STATE32:
- {
- x86_thread_state32_t *state25;
+ {
+ x86_thread_state32_t *state25;
- state25 = (x86_thread_state32_t *) tstate;
+ state25 = (x86_thread_state32_t *) tstate;
- if (state25->esp) {
- *user_stack = state25->esp;
- if (customstack)
- *customstack = 1;
- } else {
- *user_stack = VM_USRSTACK32;
- if (customstack)
- *customstack = 0;
+ if (state25->esp) {
+ *user_stack = state25->esp;
+ if (customstack) {
+ *customstack = 1;
+ }
+ } else {
+ *user_stack = VM_USRSTACK32;
+ if (customstack) {
+ *customstack = 0;
}
- break;
}
+ break;
+ }
+ case x86_THREAD_FULL_STATE64:
+ /* FALL THROUGH */
case x86_THREAD_STATE64:
- {
- x86_thread_state64_t *state25;
+ {
+ x86_thread_state64_t *state25;
- state25 = (x86_thread_state64_t *) tstate;
+ state25 = (x86_thread_state64_t *) tstate;
- if (state25->rsp) {
- *user_stack = state25->rsp;
- if (customstack)
- *customstack = 1;
- } else {
- *user_stack = VM_USRSTACK64;
- if (customstack)
- *customstack = 0;
+ if (state25->rsp) {
+ *user_stack = state25->rsp;
+ if (customstack) {
+ *customstack = 1;
+ }
+ } else {
+ *user_stack = VM_USRSTACK64;
+ if (customstack) {
+ *customstack = 0;
}
- break;
}
+ break;
+ }
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
}
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
/*
} else {
*default_user_stack = VM_USRSTACK32;
}
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
kern_return_t
thread_entrypoint(
- __unused thread_t thread,
- int flavor,
- thread_state_t tstate,
- __unused unsigned int count,
- mach_vm_offset_t *entry_point
-)
-{
+ __unused thread_t thread,
+ int flavor,
+ thread_state_t tstate,
+ __unused unsigned int count,
+ mach_vm_offset_t *entry_point
+ )
+{
/*
* Set a default.
*/
- if (*entry_point == 0)
+ if (*entry_point == 0) {
*entry_point = VM_MIN_ADDRESS;
+ }
switch (flavor) {
case x86_THREAD_STATE32:
- {
- x86_thread_state32_t *state25;
+ {
+ x86_thread_state32_t *state25;
- state25 = (i386_thread_state_t *) tstate;
- *entry_point = state25->eip ? state25->eip: VM_MIN_ADDRESS;
- break;
- }
+ state25 = (i386_thread_state_t *) tstate;
+ *entry_point = state25->eip ? state25->eip : VM_MIN_ADDRESS;
+ break;
+ }
case x86_THREAD_STATE64:
- {
- x86_thread_state64_t *state25;
+ {
+ x86_thread_state64_t *state25;
- state25 = (x86_thread_state64_t *) tstate;
- *entry_point = state25->rip ? state25->rip: VM_MIN_ADDRESS64;
- break;
- }
+ state25 = (x86_thread_state64_t *) tstate;
+ *entry_point = state25->rip ? state25->rip : VM_MIN_ADDRESS64;
+ break;
+ }
}
- return (KERN_SUCCESS);
+ return KERN_SUCCESS;
}
-/*
+/*
* FIXME - thread_set_child
*/
{
pal_register_cache_state(child, DIRTY);
- if (thread_is_64bit(child)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit_addr(child)) {
+ x86_saved_state64_t *iss64;
iss64 = USER_REGS64(child);
iss64->rdx = 1;
iss64->isf.rflags &= ~EFL_CF;
} else {
- x86_saved_state32_t *iss32;
+ x86_saved_state32_t *iss32;
iss32 = USER_REGS32(child);
void
machdep_syscall(x86_saved_state_t *state)
{
- int args[machdep_call_count];
- int trapno;
- int nargs;
- const machdep_call_t *entry;
- x86_saved_state32_t *regs;
+ int args[machdep_call_count];
+ int trapno;
+ int nargs;
+ const machdep_call_t *entry;
+ x86_saved_state32_t *regs;
assert(is_saved_state32(state));
regs = saved_state32(state);
-
+
trapno = regs->eax;
#if DEBUG_TRACE
kprintf("machdep_syscall(0x%08x) code=%d\n", regs, trapno);
nargs = entry->nargs;
if (nargs != 0) {
- if (copyin((user_addr_t) regs->uesp + sizeof (int),
- (char *) args, (nargs * sizeof (int)))) {
+ if (copyin((user_addr_t) regs->uesp + sizeof(int),
+ (char *) args, (nargs * sizeof(int)))) {
regs->eax = KERN_INVALID_ADDRESS;
thread_exception_return();
regs->eax = (*entry->routine.args_1)(args[0]);
break;
case 2:
- regs->eax = (*entry->routine.args_2)(args[0],args[1]);
+ regs->eax = (*entry->routine.args_2)(args[0], args[1]);
break;
case 3:
- if (!entry->bsd_style)
- regs->eax = (*entry->routine.args_3)(args[0],args[1],args[2]);
- else {
- int error;
- uint32_t rval;
+ if (!entry->bsd_style) {
+ regs->eax = (*entry->routine.args_3)(args[0], args[1], args[2]);
+ } else {
+ int error;
+ uint32_t rval;
error = (*entry->routine.args_bsd_3)(&rval, args[0], args[1], args[2]);
if (error) {
regs->eax = error;
- regs->efl |= EFL_CF; /* carry bit */
+ regs->efl |= EFL_CF; /* carry bit */
} else {
regs->eax = rval;
regs->efl &= ~EFL_CF;
void
machdep_syscall64(x86_saved_state_t *state)
{
- int trapno;
- const machdep_call_t *entry;
- x86_saved_state64_t *regs;
+ int trapno;
+ const machdep_call_t *entry;
+ x86_saved_state64_t *regs;
assert(is_saved_state64(state));
regs = saved_state64(state);
-
+
trapno = (int)(regs->rax & SYSCALL_NUMBER_MASK);
DEBUG_KPRINT_SYSCALL_MDEP(
case 2:
regs->rax = (*entry->routine.args64_2)(regs->rdi, regs->rsi);
break;
+ case 3:
+ if (!entry->bsd_style) {
+ regs->rax = (*entry->routine.args64_3)(regs->rdi, regs->rsi, regs->rdx);
+ } else {
+ int error;
+ uint32_t rval;
+
+ error = (*entry->routine.args64_bsd_3)(&rval, regs->rdi, regs->rsi, regs->rdx);
+ if (error) {
+ regs->rax = (uint64_t)error;
+ regs->isf.rflags |= EFL_CF; /* carry bit */
+ } else {
+ regs->rax = rval;
+ regs->isf.rflags &= ~(uint64_t)EFL_CF;
+ }
+ }
+ break;
default:
panic("machdep_syscall64: too many args");
}
/* NOTREACHED */
}
-#endif /* MACH_BSD */
+#endif /* MACH_BSD */
typedef kern_return_t (*mach_call_t)(void *);
static kern_return_t
mach_call_arg_munger32(uint32_t sp, struct mach_call_args *args, const mach_trap_t *trapp)
{
- if (copyin((user_addr_t)(sp + sizeof(int)), (char *)args, trapp->mach_trap_u32_words * sizeof (int)))
+ if (copyin((user_addr_t)(sp + sizeof(int)), (char *)args, trapp->mach_trap_u32_words * sizeof(int))) {
return KERN_INVALID_ARGUMENT;
+ }
#if CONFIG_REQUIRES_U32_MUNGING
trapp->mach_trap_arg_munge32(args);
#else
int call_number;
mach_call_t mach_call;
kern_return_t retval;
- struct mach_call_args args = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
- x86_saved_state32_t *regs;
+ struct mach_call_args args = {
+ .arg1 = 0,
+ .arg2 = 0,
+ .arg3 = 0,
+ .arg4 = 0,
+ .arg5 = 0,
+ .arg6 = 0,
+ .arg7 = 0,
+ .arg8 = 0,
+ .arg9 = 0
+ };
+ x86_saved_state32_t *regs;
struct uthread *ut = get_bsdthread_info(current_thread());
uthread_reset_proc_refcount(ut);
argc = mach_trap_table[call_number].mach_trap_arg_count;
if (argc) {
- retval = mach_call_arg_munger32(regs->uesp, &args, &mach_trap_table[call_number]);
+ retval = mach_call_arg_munger32(regs->uesp, &args, &mach_trap_table[call_number]);
if (retval != KERN_SUCCESS) {
regs->eax = retval;
#endif
KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
- args.arg1, args.arg2, args.arg3, args.arg4, 0);
+ MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
+ args.arg1, args.arg2, args.arg3, args.arg4, 0);
retval = mach_call(&args);
DEBUG_KPRINT_SYSCALL_MACH("mach_call_munger: retval=0x%x\n", retval);
KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END,
- retval, 0, 0, 0, 0);
+ MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_END,
+ retval, 0, 0, 0, 0);
regs->eax = retval;
int call_number;
int argc;
mach_call_t mach_call;
- struct mach_call_args args = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
- x86_saved_state64_t *regs;
+ struct mach_call_args args = {
+ .arg1 = 0,
+ .arg2 = 0,
+ .arg3 = 0,
+ .arg4 = 0,
+ .arg5 = 0,
+ .arg6 = 0,
+ .arg7 = 0,
+ .arg8 = 0,
+ .arg9 = 0
+ };
+ x86_saved_state64_t *regs;
struct uthread *ut = get_bsdthread_info(current_thread());
uthread_reset_proc_refcount(ut);
"mach_call_munger64: code=%d(%s)\n",
call_number, mach_syscall_name_table[call_number]);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_START,
- regs->rdi, regs->rsi, regs->rdx, regs->r10, 0);
-
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
+ regs->rdi, regs->rsi, regs->rdx, regs->r10, 0);
+
if (call_number < 0 || call_number >= mach_trap_count) {
- i386_exception(EXC_SYSCALL, regs->rax, 1);
+ i386_exception(EXC_SYSCALL, regs->rax, 1);
/* NOTREACHED */
}
mach_call = (mach_call_t)mach_trap_table[call_number].mach_trap_function;
if (mach_call == (mach_call_t)kern_invalid) {
- i386_exception(EXC_SYSCALL, regs->rax, 1);
+ i386_exception(EXC_SYSCALL, regs->rax, 1);
/* NOTREACHED */
}
argc = mach_trap_table[call_number].mach_trap_arg_count;
if (argc) {
int args_in_regs = MIN(6, argc);
-
- memcpy(&args.arg1, ®s->rdi, args_in_regs * sizeof(syscall_arg_t));
+ __nochk_memcpy(&args.arg1, ®s->rdi, args_in_regs * sizeof(syscall_arg_t));
if (argc > 6) {
- int copyin_count;
+ int copyin_count;
assert(argc <= 9);
copyin_count = (argc - 6) * (int)sizeof(syscall_arg_t);
- if (copyin((user_addr_t)(regs->isf.rsp + sizeof(user_addr_t)), (char *)&args.arg7, copyin_count)) {
- regs->rax = KERN_INVALID_ARGUMENT;
-
+ if (copyin((user_addr_t)(regs->isf.rsp + sizeof(user_addr_t)), (char *)&args.arg7, copyin_count)) {
+ regs->rax = KERN_INVALID_ARGUMENT;
+
thread_exception_return();
/* NOTREACHED */
}
#endif
regs->rax = (uint64_t)mach_call((void *)&args);
-
+
DEBUG_KPRINT_SYSCALL_MACH( "mach_call_munger64: retval=0x%llx\n", regs->rax);
- KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
- MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END,
- regs->rax, 0, 0, 0, 0);
+ KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,
+ MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_END,
+ regs->rax, 0, 0, 0, 0);
#if DEBUG || DEVELOPMENT
kern_allocation_name_t
*/
void
thread_setuserstack(
- thread_t thread,
- mach_vm_address_t user_stack)
+ thread_t thread,
+ mach_vm_address_t user_stack)
{
pal_register_cache_state(thread, DIRTY);
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit_addr(thread)) {
+ x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thread);
iss64->isf.rsp = (uint64_t)user_stack;
} else {
- x86_saved_state32_t *iss32;
+ x86_saved_state32_t *iss32;
iss32 = USER_REGS32(thread);
*/
uint64_t
thread_adjuserstack(
- thread_t thread,
- int adjust)
+ thread_t thread,
+ int adjust)
{
pal_register_cache_state(thread, DIRTY);
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit_addr(thread)) {
+ x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thread);
return iss64->isf.rsp;
} else {
- x86_saved_state32_t *iss32;
+ x86_saved_state32_t *iss32;
iss32 = USER_REGS32(thread);
thread_setentrypoint(thread_t thread, mach_vm_address_t entry)
{
pal_register_cache_state(thread, DIRTY);
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit_addr(thread)) {
+ x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thread);
iss64->isf.rip = (uint64_t)entry;
} else {
- x86_saved_state32_t *iss32;
+ x86_saved_state32_t *iss32;
iss32 = USER_REGS32(thread);
thread_setsinglestep(thread_t thread, int on)
{
pal_register_cache_state(thread, DIRTY);
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit_addr(thread)) {
+ x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thread);
- if (on)
+ if (on) {
iss64->isf.rflags |= EFL_TF;
- else
+ } else {
iss64->isf.rflags &= ~EFL_TF;
+ }
} else {
- x86_saved_state32_t *iss32;
+ x86_saved_state32_t *iss32;
iss32 = USER_REGS32(thread);
if (on) {
iss32->efl |= EFL_TF;
/* Ensure IRET */
- if (iss32->cs == SYSENTER_CS)
+ if (iss32->cs == SYSENTER_CS) {
iss32->cs = SYSENTER_TF_CS;
- }
- else
+ }
+ } else {
iss32->efl &= ~EFL_TF;
+ }
}
-
- return (KERN_SUCCESS);
+
+ return KERN_SUCCESS;
}
void *
get_user_regs(thread_t th)
{
pal_register_cache_state(th, DIRTY);
- return(USER_STATE(th));
+ return USER_STATE(th);
}
void *
#if CONFIG_DTRACE
/*
* DTrace would like to have a peek at the kernel interrupt state, if available.
- * Based on osfmk/chud/i386/chud_thread_i386.c:chudxnu_thread_get_state(), which see.
*/
x86_saved_state_t *find_kern_regs(thread_t);
x86_saved_state_t *
find_kern_regs(thread_t thread)
{
- if (thread == current_thread() &&
- NULL != current_cpu_datap()->cpu_int_state &&
- !(USER_STATE(thread) == current_cpu_datap()->cpu_int_state &&
- current_cpu_datap()->cpu_interrupt_level == 1)) {
-
+ if (thread == current_thread() &&
+ NULL != current_cpu_datap()->cpu_int_state &&
+ !(USER_STATE(thread) == current_cpu_datap()->cpu_int_state &&
+ current_cpu_datap()->cpu_interrupt_level == 1)) {
return current_cpu_datap()->cpu_int_state;
} else {
return NULL;
projects / apple / xnu.git / blobdiff