powerpc: merge ptrace.c
Stephen Rothwell [Thu, 13 Oct 2005 05:52:04 +0000 (15:52 +1000)]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

arch/powerpc/kernel/Makefile
arch/powerpc/kernel/ptrace.c [moved from arch/ppc/kernel/ptrace.c with 79% similarity]
arch/ppc/kernel/Makefile
arch/ppc64/kernel/Makefile
arch/ppc64/kernel/ptrace.c [deleted file]

index bce2539..ae97295 100644 (file)
@@ -10,7 +10,7 @@ CFLAGS_prom_init.o      += -fPIC
 CFLAGS_btext.o         += -fPIC
 endif
 
-obj-y                          := semaphore.o cputable.o
+obj-y                          := semaphore.o cputable.o ptrace.o
 obj-$(CONFIG_PPC64)            += binfmt_elf32.o
 obj-$(CONFIG_ALTIVEC)          += vecemu.o vector.o
 obj-$(CONFIG_POWER4)           += idle_power4.o
similarity index 79%
rename from arch/ppc/kernel/ptrace.c
rename to arch/powerpc/kernel/ptrace.c
index e7aee41..336b8bf 100644 (file)
@@ -1,6 +1,4 @@
 /*
- *  arch/ppc/kernel/ptrace.c
- *
  *  PowerPC version
  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
  *
@@ -17,6 +15,7 @@
  * this archive for more details.
  */
 
+#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/signal.h>
 #include <linux/seccomp.h>
 #include <linux/audit.h>
+#ifdef CONFIG_PPC32
 #include <linux/module.h>
+#endif
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/system.h>
+#ifdef CONFIG_PPC64
+#include <asm/ptrace-common.h>
+#endif
 
+#ifdef CONFIG_PPC32
 /*
  * Set of msr bits that gdb can change on behalf of a process.
  */
 #else
 #define MSR_DEBUGCHANGE        (MSR_SE | MSR_BE)
 #endif
+#endif /* CONFIG_PPC32 */
 
 /*
  * does not yet catch signals sent when the child dies.
  * in exit.c or in signal.c.
  */
 
+#ifdef CONFIG_PPC32
 /*
  * Get contents of register REGNO in task TASK.
  */
@@ -228,6 +235,7 @@ clear_single_step(struct task_struct *task)
 #endif
        }
 }
+#endif /* CONFIG_PPC32 */
 
 /*
  * Called by kernel/ptrace.c when detaching..
@@ -296,25 +304,28 @@ int sys_ptrace(long request, long pid, long addr, long data)
        }
 
        /* read the word at location addr in the USER area. */
-       /* XXX this will need fixing for 64-bit */
        case PTRACE_PEEKUSR: {
                unsigned long index, tmp;
 
                ret = -EIO;
                /* convert to index and check */
+#ifdef CONFIG_PPC32
                index = (unsigned long) addr >> 2;
-               if ((addr & 3) || index > PT_FPSCR
-                   || child->thread.regs == NULL)
+               if ((addr & 3) || (index > PT_FPSCR)
+                   || (child->thread.regs == NULL))
+#else
+               index = (unsigned long) addr >> 3;
+               if ((addr & 7) || (index > PT_FPSCR))
+#endif
                        break;
 
+#ifdef CONFIG_PPC32
                CHECK_FULL_REGS(child->thread.regs);
+#endif
                if (index < PT_FPR0) {
                        tmp = get_reg(child, (int) index);
                } else {
-                       preempt_disable();
-                       if (child->thread.regs->msr & MSR_FP)
-                               giveup_fpu(child);
-                       preempt_enable();
+                       flush_fp_to_thread(child);
                        tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0];
                }
                ret = put_user(tmp,(unsigned long __user *) data);
@@ -325,7 +336,8 @@ int sys_ptrace(long request, long pid, long addr, long data)
        case PTRACE_POKETEXT: /* write the word at location addr. */
        case PTRACE_POKEDATA:
                ret = 0;
-               if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data))
+               if (access_process_vm(child, addr, &data, sizeof(data), 1)
+                               == sizeof(data))
                        break;
                ret = -EIO;
                break;
@@ -336,21 +348,25 @@ int sys_ptrace(long request, long pid, long addr, long data)
 
                ret = -EIO;
                /* convert to index and check */
+#ifdef CONFIG_PPC32
                index = (unsigned long) addr >> 2;
-               if ((addr & 3) || index > PT_FPSCR
-                   || child->thread.regs == NULL)
+               if ((addr & 3) || (index > PT_FPSCR)
+                   || (child->thread.regs == NULL))
+#else
+               index = (unsigned long) addr >> 3;
+               if ((addr & 7) || (index > PT_FPSCR))
+#endif
                        break;
 
+#ifdef CONFIG_PPC32
                CHECK_FULL_REGS(child->thread.regs);
+#endif
                if (index == PT_ORIG_R3)
                        break;
                if (index < PT_FPR0) {
                        ret = put_reg(child, index, data);
                } else {
-                       preempt_disable();
-                       if (child->thread.regs->msr & MSR_FP)
-                               giveup_fpu(child);
-                       preempt_enable();
+                       flush_fp_to_thread(child);
                        ((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data;
                        ret = 0;
                }
@@ -362,11 +378,10 @@ int sys_ptrace(long request, long pid, long addr, long data)
                ret = -EIO;
                if (!valid_signal(data))
                        break;
-               if (request == PTRACE_SYSCALL) {
+               if (request == PTRACE_SYSCALL)
                        set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-               } else {
+               else
                        clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-               }
                child->exit_code = data;
                /* make sure the single step bit is not set. */
                clear_single_step(child);
@@ -404,28 +419,102 @@ int sys_ptrace(long request, long pid, long addr, long data)
                break;
        }
 
+#ifdef CONFIG_PPC64
+       case PTRACE_GET_DEBUGREG: {
+               ret = -EINVAL;
+               /* We only support one DABR and no IABRS at the moment */
+               if (addr > 0)
+                       break;
+               ret = put_user(child->thread.dabr,
+                              (unsigned long __user *)data);
+               break;
+       }
+
+       case PTRACE_SET_DEBUGREG:
+               ret = ptrace_set_debugreg(child, addr, data);
+               break;
+#endif
+
        case PTRACE_DETACH:
                ret = ptrace_detach(child, data);
                break;
 
+#ifdef CONFIG_PPC64
+       case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */
+               int i;
+               unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
+               unsigned long __user *tmp = (unsigned long __user *)addr;
+
+               for (i = 0; i < 32; i++) {
+                       ret = put_user(*reg, tmp);
+                       if (ret)
+                               break;
+                       reg++;
+                       tmp++;
+               }
+               break;
+       }
+
+       case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */
+               int i;
+               unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
+               unsigned long __user *tmp = (unsigned long __user *)addr;
+
+               for (i = 0; i < 32; i++) {
+                       ret = get_user(*reg, tmp);
+                       if (ret)
+                               break;
+                       reg++;
+                       tmp++;
+               }
+               break;
+       }
+
+       case PPC_PTRACE_GETFPREGS: { /* Get FPRs 0 - 31. */
+               int i;
+               unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
+               unsigned long __user *tmp = (unsigned long __user *)addr;
+
+               flush_fp_to_thread(child);
+
+               for (i = 0; i < 32; i++) {
+                       ret = put_user(*reg, tmp);
+                       if (ret)
+                               break;
+                       reg++;
+                       tmp++;
+               }
+               break;
+       }
+
+       case PPC_PTRACE_SETFPREGS: { /* Get FPRs 0 - 31. */
+               int i;
+               unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
+               unsigned long __user *tmp = (unsigned long __user *)addr;
+
+               flush_fp_to_thread(child);
+
+               for (i = 0; i < 32; i++) {
+                       ret = get_user(*reg, tmp);
+                       if (ret)
+                               break;
+                       reg++;
+                       tmp++;
+               }
+               break;
+       }
+#endif /* CONFIG_PPC64 */
+
 #ifdef CONFIG_ALTIVEC
        case PTRACE_GETVRREGS:
                /* Get the child altivec register state. */
-               preempt_disable();
-               if (child->thread.regs->msr & MSR_VEC)
-                       giveup_altivec(child);
-               preempt_enable();
+               flush_altivec_to_thread(child);
                ret = get_vrregs((unsigned long __user *)data, child);
                break;
 
        case PTRACE_SETVRREGS:
                /* Set the child altivec register state. */
-               /* this is to clear the MSR_VEC bit to force a reload
-                * of register state from memory */
-               preempt_disable();
-               if (child->thread.regs->msr & MSR_VEC)
-                       giveup_altivec(child);
-               preempt_enable();
+               flush_altivec_to_thread(child);
                ret = set_vrregs(child, (unsigned long __user *)data);
                break;
 #endif
@@ -478,12 +567,21 @@ static void do_syscall_trace(void)
 
 void do_syscall_trace_enter(struct pt_regs *regs)
 {
+#ifdef CONFIG_PPC64
+       secure_computing(regs->gpr[0]);
+#endif
+
        if (test_thread_flag(TIF_SYSCALL_TRACE)
            && (current->ptrace & PT_PTRACED))
                do_syscall_trace();
 
        if (unlikely(current->audit_context))
-               audit_syscall_entry(current, AUDIT_ARCH_PPC,
+               audit_syscall_entry(current,
+#ifdef CONFIG_PPC32
+                                   AUDIT_ARCH_PPC,
+#else
+                                   test_thread_flag(TIF_32BIT)?AUDIT_ARCH_PPC:AUDIT_ARCH_PPC64,
+#endif
                                    regs->gpr[0],
                                    regs->gpr[3], regs->gpr[4],
                                    regs->gpr[5], regs->gpr[6]);
@@ -491,17 +589,25 @@ void do_syscall_trace_enter(struct pt_regs *regs)
 
 void do_syscall_trace_leave(struct pt_regs *regs)
 {
+#ifdef CONFIG_PPC32
        secure_computing(regs->gpr[0]);
+#endif
 
        if (unlikely(current->audit_context))
                audit_syscall_exit(current,
                                   (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
                                   regs->result);
 
-       if ((test_thread_flag(TIF_SYSCALL_TRACE))
+       if ((test_thread_flag(TIF_SYSCALL_TRACE)
+#ifdef CONFIG_PPC64
+            || test_thread_flag(TIF_SINGLESTEP)
+#endif
+            )
            && (current->ptrace & PT_PTRACED))
                do_syscall_trace();
 }
 
+#ifdef CONFIG_PPC32
 EXPORT_SYMBOL(do_syscall_trace_enter);
 EXPORT_SYMBOL(do_syscall_trace_leave);
+#endif
index 0cba463..7d16b1f 100644 (file)
@@ -13,7 +13,7 @@ extra-$(CONFIG_POWER4)                += idle_power4.o
 extra-y                                += vmlinux.lds
 
 obj-y                          := entry.o traps.o irq.o idle.o time.o misc.o \
-                                       process.o signal.o ptrace.o align.o \
+                                       process.o signal.o align.o \
                                        syscalls.o setup.o \
                                        ppc_htab.o perfmon.o
 obj-$(CONFIG_6xx)              += l2cr.o cpu_setup_6xx.o
@@ -38,7 +38,7 @@ endif
 
 else
 obj-y                          := irq.o idle.o time.o \
-                                       signal.o ptrace.o align.o \
+                                       signal.o align.o \
                                        syscalls.o perfmon.o
 obj-$(CONFIG_6xx)              += l2cr.o cpu_setup_6xx.o
 obj-$(CONFIG_SOFTWARE_SUSPEND) += swsusp.o
index 1a8f353..b1203b7 100644 (file)
@@ -12,7 +12,7 @@ obj-y               :=        setup.o entry.o misc.o prom.o
 endif
 
 obj-y               += irq.o idle.o dma.o \
-                       time.o signal.o syscalls.o ptrace.o \
+                       time.o signal.o syscalls.o \
                        align.o bitops.o pacaData.o \
                        udbg.o sys_ppc32.o ioctl32.o \
                        ptrace32.o signal32.o rtc.o \
diff --git a/arch/ppc64/kernel/ptrace.c b/arch/ppc64/kernel/ptrace.c
deleted file mode 100644 (file)
index b1c044c..0000000
+++ /dev/null
@@ -1,363 +0,0 @@
-/*
- *  linux/arch/ppc64/kernel/ptrace.c
- *
- *  PowerPC version
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- *  Derived from "arch/m68k/kernel/ptrace.c"
- *  Copyright (C) 1994 by Hamish Macdonald
- *  Taken from linux/kernel/ptrace.c and modified for M680x0.
- *  linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
- *
- * Modified by Cort Dougan (cort@hq.fsmlabs.com)
- * and Paul Mackerras (paulus@linuxcare.com.au).
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file README.legal in the main directory of
- * this archive for more details.
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/security.h>
-#include <linux/audit.h>
-#include <linux/seccomp.h>
-#include <linux/signal.h>
-
-#include <asm/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/ptrace-common.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure single step bits etc are not set.
- */
-void ptrace_disable(struct task_struct *child)
-{
-       /* make sure the single step bit is not set. */
-       clear_single_step(child);
-}
-
-int sys_ptrace(long request, long pid, long addr, long data)
-{
-       struct task_struct *child;
-       int ret = -EPERM;
-
-       lock_kernel();
-       if (request == PTRACE_TRACEME) {
-               /* are we already being traced? */
-               if (current->ptrace & PT_PTRACED)
-                       goto out;
-               ret = security_ptrace(current->parent, current);
-               if (ret)
-                       goto out;
-               /* set the ptrace bit in the process flags. */
-               current->ptrace |= PT_PTRACED;
-               ret = 0;
-               goto out;
-       }
-       ret = -ESRCH;
-       read_lock(&tasklist_lock);
-       child = find_task_by_pid(pid);
-       if (child)
-               get_task_struct(child);
-       read_unlock(&tasklist_lock);
-       if (!child)
-               goto out;
-
-       ret = -EPERM;
-       if (pid == 1)           /* you may not mess with init */
-               goto out_tsk;
-
-       if (request == PTRACE_ATTACH) {
-               ret = ptrace_attach(child);
-               goto out_tsk;
-       }
-
-       ret = ptrace_check_attach(child, request == PTRACE_KILL);
-       if (ret < 0)
-               goto out_tsk;
-
-       switch (request) {
-       /* when I and D space are separate, these will need to be fixed. */
-       case PTRACE_PEEKTEXT: /* read word at location addr. */ 
-       case PTRACE_PEEKDATA: {
-               unsigned long tmp;
-               int copied;
-
-               copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
-               ret = -EIO;
-               if (copied != sizeof(tmp))
-                       break;
-               ret = put_user(tmp,(unsigned long __user *) data);
-               break;
-       }
-
-       /* read the word at location addr in the USER area. */
-       case PTRACE_PEEKUSR: {
-               unsigned long index;
-               unsigned long tmp;
-
-               ret = -EIO;
-               /* convert to index and check */
-               index = (unsigned long) addr >> 3;
-               if ((addr & 7) || (index > PT_FPSCR))
-                       break;
-
-               if (index < PT_FPR0) {
-                       tmp = get_reg(child, (int)index);
-               } else {
-                       flush_fp_to_thread(child);
-                       tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0];
-               }
-               ret = put_user(tmp,(unsigned long __user *) data);
-               break;
-       }
-
-       /* If I and D space are separate, this will have to be fixed. */
-       case PTRACE_POKETEXT: /* write the word at location addr. */
-       case PTRACE_POKEDATA:
-               ret = 0;
-               if (access_process_vm(child, addr, &data, sizeof(data), 1)
-                               == sizeof(data))
-                       break;
-               ret = -EIO;
-               break;
-
-       /* write the word at location addr in the USER area */
-       case PTRACE_POKEUSR: {
-               unsigned long index;
-
-               ret = -EIO;
-               /* convert to index and check */
-               index = (unsigned long) addr >> 3;
-               if ((addr & 7) || (index > PT_FPSCR))
-                       break;
-
-               if (index == PT_ORIG_R3)
-                       break;
-               if (index < PT_FPR0) {
-                       ret = put_reg(child, index, data);
-               } else {
-                       flush_fp_to_thread(child);
-                       ((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data;
-                       ret = 0;
-               }
-               break;
-       }
-
-       case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
-       case PTRACE_CONT: { /* restart after signal. */
-               ret = -EIO;
-               if (!valid_signal(data))
-                       break;
-               if (request == PTRACE_SYSCALL)
-                       set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-               else
-                       clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-               child->exit_code = data;
-               /* make sure the single step bit is not set. */
-               clear_single_step(child);
-               wake_up_process(child);
-               ret = 0;
-               break;
-       }
-
-       /*
-        * make the child exit.  Best I can do is send it a sigkill.
-        * perhaps it should be put in the status that it wants to
-        * exit.
-        */
-       case PTRACE_KILL: {
-               ret = 0;
-               if (child->exit_state == EXIT_ZOMBIE)   /* already dead */
-                       break;
-               child->exit_code = SIGKILL;
-               /* make sure the single step bit is not set. */
-               clear_single_step(child);
-               wake_up_process(child);
-               break;
-       }
-
-       case PTRACE_SINGLESTEP: {  /* set the trap flag. */
-               ret = -EIO;
-               if (!valid_signal(data))
-                       break;
-               clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-               set_single_step(child);
-               child->exit_code = data;
-               /* give it a chance to run. */
-               wake_up_process(child);
-               ret = 0;
-               break;
-       }
-
-       case PTRACE_GET_DEBUGREG: {
-               ret = -EINVAL;
-               /* We only support one DABR and no IABRS at the moment */
-               if (addr > 0)
-                       break;
-               ret = put_user(child->thread.dabr,
-                              (unsigned long __user *)data);
-               break;
-       }
-
-       case PTRACE_SET_DEBUGREG:
-               ret = ptrace_set_debugreg(child, addr, data);
-               break;
-
-       case PTRACE_DETACH:
-               ret = ptrace_detach(child, data);
-               break;
-
-       case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */
-               int i;
-               unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
-               unsigned long __user *tmp = (unsigned long __user *)addr;
-
-               for (i = 0; i < 32; i++) {
-                       ret = put_user(*reg, tmp);
-                       if (ret)
-                               break;
-                       reg++;
-                       tmp++;
-               }
-               break;
-       }
-
-       case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */
-               int i;
-               unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
-               unsigned long __user *tmp = (unsigned long __user *)addr;
-
-               for (i = 0; i < 32; i++) {
-                       ret = get_user(*reg, tmp);
-                       if (ret)
-                               break;
-                       reg++;
-                       tmp++;
-               }
-               break;
-       }
-
-       case PPC_PTRACE_GETFPREGS: { /* Get FPRs 0 - 31. */
-               int i;
-               unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
-               unsigned long __user *tmp = (unsigned long __user *)addr;
-
-               flush_fp_to_thread(child);
-
-               for (i = 0; i < 32; i++) {
-                       ret = put_user(*reg, tmp);
-                       if (ret)
-                               break;
-                       reg++;
-                       tmp++;
-               }
-               break;
-       }
-
-       case PPC_PTRACE_SETFPREGS: { /* Get FPRs 0 - 31. */
-               int i;
-               unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
-               unsigned long __user *tmp = (unsigned long __user *)addr;
-
-               flush_fp_to_thread(child);
-
-               for (i = 0; i < 32; i++) {
-                       ret = get_user(*reg, tmp);
-                       if (ret)
-                               break;
-                       reg++;
-                       tmp++;
-               }
-               break;
-       }
-
-#ifdef CONFIG_ALTIVEC
-       case PTRACE_GETVRREGS:
-               /* Get the child altivec register state. */
-               flush_altivec_to_thread(child);
-               ret = get_vrregs((unsigned long __user *)data, child);
-               break;
-
-       case PTRACE_SETVRREGS:
-               /* Set the child altivec register state. */
-               flush_altivec_to_thread(child);
-               ret = set_vrregs(child, (unsigned long __user *)data);
-               break;
-#endif
-
-       default:
-               ret = ptrace_request(child, request, addr, data);
-               break;
-       }
-out_tsk:
-       put_task_struct(child);
-out:
-       unlock_kernel();
-       return ret;
-}
-
-static void do_syscall_trace(void)
-{
-       /* the 0x80 provides a way for the tracing parent to distinguish
-          between a syscall stop and SIGTRAP delivery */
-       ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
-                                ? 0x80 : 0));
-
-       /*
-        * this isn't the same as continuing with a signal, but it will do
-        * for normal use.  strace only continues with a signal if the
-        * stopping signal is not SIGTRAP.  -brl
-        */
-       if (current->exit_code) {
-               send_sig(current->exit_code, current, 1);
-               current->exit_code = 0;
-       }
-}
-
-void do_syscall_trace_enter(struct pt_regs *regs)
-{
-       secure_computing(regs->gpr[0]);
-
-       if (test_thread_flag(TIF_SYSCALL_TRACE)
-           && (current->ptrace & PT_PTRACED))
-               do_syscall_trace();
-
-       if (unlikely(current->audit_context))
-               audit_syscall_entry(current,
-                                   test_thread_flag(TIF_32BIT)?AUDIT_ARCH_PPC:AUDIT_ARCH_PPC64,
-                                   regs->gpr[0],
-                                   regs->gpr[3], regs->gpr[4],
-                                   regs->gpr[5], regs->gpr[6]);
-
-}
-
-void do_syscall_trace_leave(struct pt_regs *regs)
-{
-       if (unlikely(current->audit_context))
-               audit_syscall_exit(current, 
-                                  (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
-                                  regs->result);
-
-       if ((test_thread_flag(TIF_SYSCALL_TRACE)
-            || test_thread_flag(TIF_SINGLESTEP))
-           && (current->ptrace & PT_PTRACED))
-               do_syscall_trace();
-}