/*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * 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.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifdef MACH_BSD
#include <mach_rt.h>
#include <i386/tss.h>
#include <i386/user_ldt.h>
#include <i386/fpu.h>
-#include <i386/iopb_entries.h>
#include <i386/machdep_call.h>
#include <i386/misc_protos.h>
#include <i386/cpu_data.h>
#include <mach/i386/syscall_sw.h>
#include <sys/syscall.h>
#include <sys/kdebug.h>
-#include <sys/ktrace.h>
#include <sys/errno.h>
#include <../bsd/sys/sysent.h>
-extern struct proc *current_proc(void);
-extern struct proc * kernproc;
-
kern_return_t
thread_userstack(
thread_t,
thread_state_t,
unsigned int,
mach_vm_offset_t *,
- int *
+ int *
);
kern_return_t
void IOSleep(int);
+void thread_set_cthreadself(thread_t thread, uint64_t pself, int isLP64);
+
/*
* thread_userstack:
*
*/
kern_return_t
thread_userstack(
- __unused thread_t thread,
- int flavor,
- thread_state_t tstate,
- __unused unsigned int count,
- user_addr_t *user_stack,
- int *customstack
- )
+ __unused thread_t thread,
+ int flavor,
+ thread_state_t tstate,
+ __unused unsigned int count,
+ user_addr_t *user_stack,
+ int *customstack
+)
{
- if (customstack)
- *customstack = 0;
-
- switch (flavor) {
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
- {
- x86_thread_state32_t *state25;
-
- state25 = (x86_thread_state32_t *) tstate;
-
- if (state25->esp)
- *user_stack = state25->esp;
- else
- *user_stack = VM_USRSTACK32;
- if (customstack && state25->esp)
- *customstack = 1;
- else
- *customstack = 0;
- break;
- }
+ if (customstack)
+ *customstack = 0;
- case x86_THREAD_STATE64:
- {
- x86_thread_state64_t *state25;
+ switch (flavor) {
+ case x86_THREAD_STATE32:
+ {
+ x86_thread_state32_t *state25;
+
+ state25 = (x86_thread_state32_t *) tstate;
+
+ if (state25->esp)
+ *user_stack = state25->esp;
+ else
+ *user_stack = VM_USRSTACK32;
+ if (customstack && state25->esp)
+ *customstack = 1;
+ else
+ *customstack = 0;
+ break;
+ }
- state25 = (x86_thread_state64_t *) tstate;
+ case x86_THREAD_STATE64:
+ {
+ x86_thread_state64_t *state25;
+
+ state25 = (x86_thread_state64_t *) tstate;
+
+ if (state25->rsp)
+ *user_stack = state25->rsp;
+ else
+ *user_stack = VM_USRSTACK64;
+ if (customstack && state25->rsp)
+ *customstack = 1;
+ else
+ *customstack = 0;
+ break;
+ }
- if (state25->rsp)
- *user_stack = state25->rsp;
- else
- *user_stack = VM_USRSTACK64;
- if (customstack && state25->rsp)
- *customstack = 1;
- else
- *customstack = 0;
- break;
- }
+ default:
+ return (KERN_INVALID_ARGUMENT);
+ }
- default :
- return (KERN_INVALID_ARGUMENT);
- }
-
- 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)
- *entry_point = VM_MIN_ADDRESS;
-
+ if (*entry_point == 0)
+ *entry_point = VM_MIN_ADDRESS;
+
switch (flavor) {
- case OLD_i386_THREAD_STATE:
- case x86_THREAD_STATE32:
- {
- x86_thread_state32_t *state25;
+ case x86_THREAD_STATE32:
+ {
+ x86_thread_state32_t *state25;
- state25 = (x86_thread_state32_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;
+ case x86_THREAD_STATE64:
+ {
+ x86_thread_state64_t *state25;
- state25 = (x86_thread_state64_t *) tstate;
- *entry_point = state25->rip ? state25->rip: VM_MIN_ADDRESS64;
- break;
- }
- }
- return (KERN_SUCCESS);
-}
+ state25 = (x86_thread_state64_t *) tstate;
+ *entry_point = state25->rip ? state25->rip: VM_MIN_ADDRESS64;
+ break;
+ }
+ }
+ return (KERN_SUCCESS);
+}
/*
thread_t child
)
{
- if (child->machine.pcb == NULL || parent->machine.pcb == NULL)
+
+ pcb_t parent_pcb;
+ pcb_t child_pcb;
+
+ if ((child_pcb = child->machine.pcb) == NULL ||
+ (parent_pcb = parent->machine.pcb) == NULL)
return (KERN_FAILURE);
/*
- * Copy over the i386_saved_state registers
+ * Copy over the x86_saved_state registers
*/
if (cpu_mode_is64bit()) {
- if (thread_is_64bit(parent))
- bcopy(USER_REGS64(parent), USER_REGS64(child), sizeof(x86_saved_state64_t));
+ if (thread_is_64bit(parent))
+ bcopy(USER_REGS64(parent), USER_REGS64(child), sizeof(x86_saved_state64_t));
else
- bcopy(USER_REGS32(parent), USER_REGS32(child), sizeof(x86_saved_state_compat32_t));
+ bcopy(USER_REGS32(parent), USER_REGS32(child), sizeof(x86_saved_state_compat32_t));
} else
- bcopy(USER_REGS32(parent), USER_REGS32(child), sizeof(x86_saved_state32_t));
+ bcopy(USER_REGS32(parent), USER_REGS32(child), sizeof(x86_saved_state32_t));
/*
* Check to see if parent is using floating point
* and if so, copy the registers to the child
*/
- fpu_dup_fxstate(parent, child);
+ fpu_dup_fxstate(parent, child);
+
+#ifdef MACH_BSD
+ /*
+ * Copy the parent's cthread id and USER_CTHREAD descriptor, if 32-bit.
+ */
+ child_pcb->cthread_self = parent_pcb->cthread_self;
+ if (!thread_is_64bit(parent))
+ child_pcb->cthread_desc = parent_pcb->cthread_desc;
/*
* FIXME - should a user specified LDT, TSS and V86 info
* be duplicated as well?? - probably not.
*/
- // duplicate any use LDT entry that was set I think this is appropriate.
-#ifdef MACH_BSD
- if (parent->machine.pcb->uldt_selector!= 0) {
- child->machine.pcb->uldt_selector = parent->machine.pcb->uldt_selector;
- child->machine.pcb->uldt_desc = parent->machine.pcb->uldt_desc;
- }
+ // duplicate any use LDT entry that was set I think this is appropriate.
+ if (parent_pcb->uldt_selector!= 0) {
+ child_pcb->uldt_selector = parent_pcb->uldt_selector;
+ child_pcb->uldt_desc = parent_pcb->uldt_desc;
+ }
#endif
-
+
return (KERN_SUCCESS);
}
void
thread_set_child(thread_t child, int pid)
{
+ if (thread_is_64bit(child)) {
+ x86_saved_state64_t *iss64;
- if (thread_is_64bit(child)) {
- x86_saved_state64_t *iss64;
-
iss64 = USER_REGS64(child);
iss64->rax = pid;
iss64->rdx = 1;
iss64->isf.rflags &= ~EFL_CF;
} else {
- x86_saved_state32_t *iss32;
-
+ x86_saved_state32_t *iss32;
+
iss32 = USER_REGS32(child);
iss32->eax = pid;
void thread_set_parent(thread_t parent, int pid);
+
void
thread_set_parent(thread_t parent, int pid)
{
+ if (thread_is_64bit(parent)) {
+ x86_saved_state64_t *iss64;
- if (thread_is_64bit(parent)) {
- x86_saved_state64_t *iss64;
-
iss64 = USER_REGS64(parent);
iss64->rax = pid;
iss64->rdx = 0;
iss64->isf.rflags &= ~EFL_CF;
} else {
- x86_saved_state32_t *iss32;
-
+ x86_saved_state32_t *iss32;
+
iss32 = USER_REGS32(parent);
iss32->eax = pid;
}
-
/*
* System Call handling code
*/
-extern struct proc * i386_current_proc(void);
-
extern long fuword(vm_offset_t);
-/* following implemented in bsd/dev/i386/unix_signal.c */
-int __pthread_cset(struct sysent *);
-
-void __pthread_creset(struct sysent *);
-
void
machdep_syscall(x86_saved_state_t *state)
{
int args[machdep_call_count];
- int trapno;
+ int trapno;
int nargs;
machdep_call_t *entry;
x86_saved_state32_t *regs;
#endif
if (trapno < 0 || trapno >= machdep_call_count) {
- regs->eax = (unsigned int)kern_invalid(NULL);
+ regs->eax = (unsigned int)kern_invalid(NULL);
thread_exception_return();
/* NOTREACHED */
nargs = entry->nargs;
if (nargs != 0) {
- if (copyin((user_addr_t) regs->uesp + sizeof (int),
- (char *) args, (nargs * sizeof (int)))) {
- regs->eax = KERN_INVALID_ADDRESS;
+ if (copyin((user_addr_t) regs->uesp + sizeof (int),
+ (char *) args, (nargs * sizeof (int)))) {
+ regs->eax = KERN_INVALID_ADDRESS;
thread_exception_return();
/* NOTREACHED */
}
}
switch (nargs) {
- case 0:
- regs->eax = (*entry->routine.args_0)();
+ case 0:
+ regs->eax = (*entry->routine.args_0)();
break;
- case 1:
+ case 1:
regs->eax = (*entry->routine.args_1)(args[0]);
break;
- case 2:
- regs->eax = (*entry->routine.args_2)(args[0], args[1]);
+ case 2:
+ 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]);
+ case 3:
+ if (!entry->bsd_style)
+ regs->eax = (*entry->routine.args_3)(args[0],args[1],args[2]);
else {
- int error;
- int rval;
+ int error;
+ uint32_t rval;
- error = (*entry->routine.args_bsd_3)(&rval, args[0], args[1], args[2]);
+ error = (*entry->routine.args_bsd_3)(&rval, args[0], args[1], args[2]);
if (error) {
- regs->eax = error;
+ regs->eax = error;
regs->efl |= EFL_CF; /* carry bit */
} else {
- regs->eax = rval;
- regs->efl &= ~EFL_CF;
+ regs->eax = rval;
+ regs->efl &= ~EFL_CF;
}
}
break;
- case 4:
+ case 4:
regs->eax = (*entry->routine.args_4)(args[0], args[1], args[2], args[3]);
break;
- default:
- panic("machdep_syscall: too many args");
+ default:
+ panic("machdep_syscall: too many args");
}
if (current_thread()->funnel_lock)
- (void) thread_funnel_set(current_thread()->funnel_lock, FALSE);
+ (void) thread_funnel_set(current_thread()->funnel_lock, FALSE);
thread_exception_return();
/* NOTREACHED */
void
machdep_syscall64(x86_saved_state_t *state)
{
- int trapno;
+ int trapno;
machdep_call_t *entry;
x86_saved_state64_t *regs;
trapno = regs->rax & SYSCALL_NUMBER_MASK;
if (trapno < 0 || trapno >= machdep_call_count) {
- regs->rax = (unsigned int)kern_invalid(NULL);
+ regs->rax = (unsigned int)kern_invalid(NULL);
thread_exception_return();
/* NOTREACHED */
entry = &machdep_call_table64[trapno];
switch (entry->nargs) {
- case 0:
- regs->rax = (*entry->routine.args_0)();
+ case 0:
+ regs->rax = (*entry->routine.args_0)();
break;
- case 1:
+ case 1:
regs->rax = (*entry->routine.args64_1)(regs->rdi);
break;
- default:
- panic("machdep_syscall64: too many args");
+ default:
+ panic("machdep_syscall64: too many args");
}
if (current_thread()->funnel_lock)
- (void) thread_funnel_set(current_thread()->funnel_lock, FALSE);
+ (void) thread_funnel_set(current_thread()->funnel_lock, FALSE);
thread_exception_return();
/* NOTREACHED */
kern_return_t
thread_set_cthread_self(uint32_t self)
{
- current_thread()->machine.pcb->cthread_self = (uint64_t) self;
-
- return (KERN_SUCCESS);
+ current_thread()->machine.pcb->cthread_self = (uint64_t) self;
+
+ return (KERN_SUCCESS);
}
kern_return_t
thread_get_cthread_self(void)
{
- return ((kern_return_t)current_thread()->machine.pcb->cthread_self);
+ return ((kern_return_t)current_thread()->machine.pcb->cthread_self);
}
kern_return_t
return (USER_CTHREAD);
}
+void
+thread_set_cthreadself(thread_t thread, uint64_t pself, int isLP64)
+{
+ if (isLP64 == 0) {
+ pcb_t pcb;
+ x86_saved_state32_t *iss;
+
+ pcb = (pcb_t)thread->machine.pcb;
+ thread_compose_cthread_desc(pself, pcb);
+ pcb->cthread_self = (uint64_t) pself; /* preserve old func too */
+ iss = saved_state32(pcb->iss);
+ iss->gs = USER_CTHREAD;
+ } else {
+ pcb_t pcb;
+ x86_saved_state64_t *iss;
+
+ pcb = thread->machine.pcb;
+
+ /* check for canonical address, set 0 otherwise */
+ if (!IS_USERADDR64_CANONICAL(pself))
+ pself = 0ULL;
+ pcb->cthread_self = pself;
+
+ /* XXX for 64-in-32 */
+ iss = saved_state64(pcb->iss);
+ iss->gs = USER_CTHREAD;
+ thread_compose_cthread_desc((uint32_t) pself, pcb);
+ }
+}
+
+
kern_return_t
thread_fast_set_cthread_self64(uint64_t self)
{
kern_return_t
thread_set_user_ldt(uint32_t address, uint32_t size, uint32_t flags)
{
- pcb_t pcb;
- struct fake_descriptor temp;
- int mycpu;
-
- if (flags != 0)
- return -1; // flags not supported
- if (size > 0xFFFFF)
- return -1; // size too big, 1 meg is the limit
-
- mp_disable_preemption();
- mycpu = cpu_number();
-
- // create a "fake" descriptor so we can use fix_desc()
- // to build a real one...
- // 32 bit default operation size
- // standard read/write perms for a data segment
- pcb = (pcb_t)current_thread()->machine.pcb;
- temp.offset = address;
- temp.lim_or_seg = size;
- temp.size_or_wdct = SZ_32;
- temp.access = ACC_P|ACC_PL_U|ACC_DATA_W;
+ pcb_t pcb;
+ struct fake_descriptor temp;
+ int mycpu;
+
+ if (flags != 0)
+ return -1; // flags not supported
+ if (size > 0xFFFFF)
+ return -1; // size too big, 1 meg is the limit
+
+ mp_disable_preemption();
+ mycpu = cpu_number();
+
+ // create a "fake" descriptor so we can use fix_desc()
+ // to build a real one...
+ // 32 bit default operation size
+ // standard read/write perms for a data segment
+ pcb = (pcb_t)current_thread()->machine.pcb;
+ temp.offset = address;
+ temp.lim_or_seg = size;
+ temp.size_or_wdct = SZ_32;
+ temp.access = ACC_P|ACC_PL_U|ACC_DATA_W;
- // turn this into a real descriptor
- fix_desc(&temp,1);
+ // turn this into a real descriptor
+ fix_desc(&temp,1);
- // set up our data in the pcb
- pcb->uldt_desc = *(struct real_descriptor*)&temp;
- pcb->uldt_selector = USER_SETTABLE; // set the selector value
+ // set up our data in the pcb
+ pcb->uldt_desc = *(struct real_descriptor*)&temp;
+ pcb->uldt_selector = USER_SETTABLE; // set the selector value
- // now set it up in the current table...
- *ldt_desc_p(USER_SETTABLE) = *(struct real_descriptor*)&temp;
+ // now set it up in the current table...
+ *ldt_desc_p(USER_SETTABLE) = *(struct real_descriptor*)&temp;
- mp_enable_preemption();
+ mp_enable_preemption();
- return USER_SETTABLE;
+ return USER_SETTABLE;
}
#endif /* MACH_BSD */
syscall_arg_t arg9;
};
-
static kern_return_t
mach_call_arg_munger32(uint32_t sp, int nargs, int call_number, struct mach_call_args *args);
unsigned int args32[9];
if (copyin((user_addr_t)(sp + sizeof(int)), (char *)args32, nargs * sizeof (int)))
- return KERN_INVALID_ARGUMENT;
+ return KERN_INVALID_ARGUMENT;
switch (nargs) {
- case 9: args->arg9 = args32[8];
- case 8: args->arg8 = args32[7];
- case 7: args->arg7 = args32[6];
- case 6: args->arg6 = args32[5];
- case 5: args->arg5 = args32[4];
- case 4: args->arg4 = args32[3];
- case 3: args->arg3 = args32[2];
- case 2: args->arg2 = args32[1];
- case 1: args->arg1 = args32[0];
+ case 9: args->arg9 = args32[8];
+ case 8: args->arg8 = args32[7];
+ case 7: args->arg7 = args32[6];
+ case 6: args->arg6 = args32[5];
+ case 5: args->arg5 = args32[4];
+ case 4: args->arg4 = args32[3];
+ case 3: args->arg3 = args32[2];
+ case 2: args->arg2 = args32[1];
+ case 1: args->arg1 = args32[0];
}
if (call_number == 90) {
- /* munge_l for mach_wait_until_trap() */
- args->arg1 = (((uint64_t)(args32[0])) | ((((uint64_t)(args32[1]))<<32)));
+ /* munge_l for mach_wait_until_trap() */
+ args->arg1 = (((uint64_t)(args32[0])) | ((((uint64_t)(args32[1]))<<32)));
}
if (call_number == 93) {
- /* munge_wl for mk_timer_arm_trap() */
- args->arg2 = (((uint64_t)(args32[1])) | ((((uint64_t)(args32[2]))<<32)));
+ /* munge_wl for mk_timer_arm_trap() */
+ args->arg2 = (((uint64_t)(args32[1])) | ((((uint64_t)(args32[2]))<<32)));
}
return KERN_SUCCESS;
}
-__private_extern__ void
-mach_call_munger(x86_saved_state_t *state);
+__private_extern__ void mach_call_munger(x86_saved_state_t *state);
-
-__private_extern__
void
mach_call_munger(x86_saved_state_t *state)
{
#endif
if (call_number < 0 || call_number >= mach_trap_count) {
- i386_exception(EXC_SYSCALL, call_number, 1);
+ i386_exception(EXC_SYSCALL, call_number, 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, call_number, 1);
+ i386_exception(EXC_SYSCALL, call_number, 1);
/* NOTREACHED */
}
- argc = mach_trap_table[call_number].mach_trap_arg_count;
+ argc = mach_trap_table[call_number].mach_trap_arg_count;
if (argc) {
- retval = mach_call_arg_munger32(regs->uesp, argc, call_number, &args);
-
+ retval = mach_call_arg_munger32(regs->uesp, argc, call_number, &args);
if (retval != KERN_SUCCESS) {
- regs->eax = retval;
-
+ regs->eax = retval;
+
thread_exception_return();
/* NOTREACHED */
}
}
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
- (int) args.arg1, (int) args.arg2, (int) args.arg3, (int) args.arg4, 0);
-
+ (int) args.arg1, (int) args.arg2, (int) args.arg3, (int) args.arg4, 0);
+
retval = mach_call(&args);
KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END,
- retval, 0, 0, 0, 0);
+ retval, 0, 0, 0, 0);
regs->eax = retval;
-
+
thread_exception_return();
/* NOTREACHED */
}
+__private_extern__ void mach_call_munger64(x86_saved_state_t *regs);
-__private_extern__ void
-mach_call_munger64(x86_saved_state_t *state);
-
-
-__private_extern__
void
mach_call_munger64(x86_saved_state_t *state)
{
call_number = regs->rax & SYSCALL_NUMBER_MASK;
- KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC, (call_number)) | DBG_FUNC_START,
- (int) regs->rdi, (int) regs->rsi, (int) regs->rdx, (int) regs->r10, 0);
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,
+ (call_number)) | DBG_FUNC_START,
+ (int) regs->rdi, (int) regs->rsi,
+ (int) regs->rdx, (int) regs->r10, 0);
if (call_number < 0 || call_number >= mach_trap_count) {
i386_exception(EXC_SYSCALL, regs->rax, 1);
}
regs->rax = (uint64_t)mach_call((void *)(®s->rdi));
- KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,(call_number)) | DBG_FUNC_END,
+ KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_SC,
+ (call_number)) | DBG_FUNC_END,
(int)regs->rax, 0, 0, 0, 0);
thread_exception_return();
}
-
/*
* thread_setuserstack:
*
thread_t thread,
mach_vm_address_t user_stack)
{
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit(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);
iss32->uesp = CAST_DOWN(unsigned int, user_stack);
thread_t thread,
int adjust)
{
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit(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);
iss32->uesp += adjust;
void
thread_setentrypoint(thread_t thread, mach_vm_address_t entry)
{
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit(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);
iss32->eip = CAST_DOWN(unsigned int, entry);
}
-void
+kern_return_t
thread_setsinglestep(thread_t thread, int on)
{
- if (thread_is_64bit(thread)) {
- x86_saved_state64_t *iss64;
+ if (thread_is_64bit(thread)) {
+ x86_saved_state64_t *iss64;
iss64 = USER_REGS64(thread);
if (on)
- iss64->isf.rflags |= EFL_TF;
+ iss64->isf.rflags |= EFL_TF;
else
- iss64->isf.rflags &= ~EFL_TF;
+ 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;
+ iss32->efl |= EFL_TF;
else
- iss32->efl &= ~EFL_TF;
+ iss32->efl &= ~EFL_TF;
}
+
+ return (KERN_SUCCESS);
}
/* XXX this should be a struct savearea so that CHUD will work better on x86 */
void *
-find_user_regs(
- thread_t thread)
+find_user_regs(thread_t thread)
{
return USER_STATE(thread);
}
+void *
+get_user_regs(thread_t th)
+{
+ if (th->machine.pcb)
+ return(USER_STATE(th));
+ else {
+ printf("[get_user_regs: thread does not have pcb]");
+ return NULL;
+ }
+}
+
+#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_state32_t *find_kern_regs(thread_t);
+
+x86_saved_state32_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)) {
+
+ return saved_state32(current_cpu_datap()->cpu_int_state);
+ } else {
+ return NULL;
+ }
+}
+
+vm_offset_t dtrace_get_cpu_int_stack_top(void);
+
+vm_offset_t
+dtrace_get_cpu_int_stack_top(void)
+{
+ return current_cpu_datap()->cpu_int_stack_top;
+}
+#endif
projects / apple / xnu.git / blobdiff