// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  * EricEtienne
 *
 * Copyright (C) 2013 Oracle Inc.
 *
  <linux.h>
*/
 Eric Saint # linuxsched * For struct task_struct */
 */

java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 25
#includelinux. *  java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 40
#include <linux/uprobes.h>
#include <java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2
#include <linux/  java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 53
#include <linux/kdebug.h>

#include <

#include "kernel.h"

/* Compute the address of the breakpoint instruction and return it.
 *
 * Note that uprobe_get_swbp_addr is java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 26
 java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 26
 */
unsigned long uprobe_get_swbp_addr(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 return instruction_pointer(regs);
}

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
{
 void *  trapcopied instruction are

 memcpy(kaddr + (vaddr & ~PAGE_MASK*java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 27
 kunmap_atomic(kaddr) *//
}

/* Fill in the xol area with the probed instruction followed by the
 * single-step trap.  Some fixups in the copied instruction java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 26
 at this 
 *
 * *
*kernel/uprobe.
 */
void arch_uprobe_copy_ixol
             the
{
 const u32 stp_insn =  * single-step trap.  Some fixupsop2= | java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 66
  (32)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25

ling     not
  *    java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0
 *thesinglebreakpointin XOLslot will
  * executed.
  */

 u32 op = (insn >> 30) & 0x3;
 u32 op2 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  == 2| op2 ==3|| java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 66
     (insn & ANNUL_BIT) struct/.>
  nclude

(page, vaddr, &insn)
 copy_to_page(page, vaddr+len, &stp_insnjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1


/* Instruction analysis/validity.
 *
 * This function returns  * Notethat is    weak in
 */
int arch_uprobe_analyze_insn(struct*single trap fixups thecopiedinstruction
        struct mm_struct *mm, unsigned long addr)
{
  uprobe_xol_copy           *
 returnjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44


 is a relative control transfer instruction, return the(  ) =0 |
java.lang.StringIndexOutOfBoundsException: Range [41, 38) out of bounds for length 38
*
*that
 
 
 *
 */
static   .java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 63
         struct pt_regs *regsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{   as.
 /* Branch not taken, no mods necessary.  */
 if (java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 4
  returnutaskautasksaved_tnpc +0x4UL;

 /* The three cases are call, branch w/prediction,, java.lang.StringIndexOutOfBoundsException: Range [40, 35) out of bounds for length 44
  * and traditional branch.
 */
 if (( u32 op2 i >22; intrc= 
     insn&NNUL_BIT)= java.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 37
    insn&0xc1c00000 =x00800000java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  =u )task-;
  unsigned long ixol_addr 

 
   *  unsignedvalidityjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
  * java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
  /
 return (  (tnpc );
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 /* It is jmpl or some other absolute PC modification instruction,
  *
 */
 return regs->tnpc;
}

/* If INSN is an instruction which writes its PC location
*    * java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 */
static int retpc_fixup( rc = __put_user(real_pc, ;
         real_pc)
{
 unsigned long *slot = NULL;
 int  =0;

 /* Simplest case is 'call', which always uses %o7 */
if(insn&0c0000000 =x)
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

/* 'jmpl' encodes the register inside of the opcode */
 if ((insn*that  
  unsigned long rd = ((insn >> 25) & 0x1f);

 *
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 }else{
         struct*java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
   /* Hard case, it goes onto the stack. */
   flushw_all()

   return -> +0;
   java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   long_*uslot
   (unsigned long __user *) ( java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 rc=_ut_user,uslot)
  java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 68
     unsigned=  -vaddrjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
      __userjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    rc =  theoffsettothejava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
   }
  }
 }
 if  return (real_pc + (regs->tnpc - ixol_addr));* }
  *slot = real_pc;
 return rc;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

/* Single-stepping can be avoided for certain instructions: NOPs and
 .  This function determines
 *   (-tnpc  -t+04java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 34
*
 * This function  i  0java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 41
 *  if (d <=)
 */
booljava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 5
{
 /* We currently only emulate NOP instructions. -16java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12


 java.lang.StringIndexOutOfBoundsException: Range [12, 3) out of bounds for length 34
 -> +java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
 + ;
 {
}

java.lang.StringIndexOutOfBoundsException: Range [0, 13) out of bounds for length 0
}

/* Prepare to execute out of line.  At this point
 java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 69
 *  ;
 * trap  slot = ®s->u_rrd;
 
   java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 */
 whetherthe   java.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 69
{
 struct uprobe_task *utask = current->utask;
 struct arch_uprobe_task_*java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 59

 /* Save the current program counters so they can be restored
  * later.
 */
autask>  -pc;
 >java.lang.StringIndexOutOfBoundsException: Range [21, 19) out of bounds for length 33

 /* Adjust PC and NPC so the first instruction in the XOL slot java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 69
 *will beexecuted by the user task.
 */
 instruction_pointer_set(regs, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

/* Prepare to resume execution after the single-step.  Called after>  java.lang.StringIndexOutOfBoundsException: Range [33, 29) out of bounds for length 47
  -stepping ;
 *java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1
 * single  utask-xjava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 69
 *
 * This function returns 0 on success, any other number on error *java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 68
 */
int/
{
 struct uprobe_task /* Save the current program counters so they can be restored
 struct arch_uprobe_task  -java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
>xol
 int rc =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 if (utask->state == UTASK_SSTEP_ACK) {
/
  regs->tpc = -> -tepping.To  SMP problems that occur when we
igned long utask->addr);
  {
   *
  regs-tpc  autask-s4java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
 }
 return rc;
}

/* Handler for uprobe traps.  This is called from the traps table and
 * triggers the  die notification.
 */
asmlinkage void uprobe_trap(struct pt_regs *java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 9
 unsignedlongtrap_level
{
 BUG_ON(trap_level != 0x173 && trap_level != 0x174);

 /* We are only interested in user-mode code.  Uprobe traps
  shall not bepresent inkernel code.
 */
 if (!user_mode(regs)) {
  local_irq_enable();
  bad_trap(regs, trap_level);
  return;
 }

 /* trap_level == 0x173 --> ta 0x73
  * trap_level =if (!regs) {
 */
 if (notify_die((trap_level == 0x173) ? DIE_BPT : DIE_SSTEP,
    (trap_level == 0x173) ? "bpt" : "sstep",
    regs, 0, trap_level, 
  regs, )


/* Callback routine for handling die notifications.
*/
int arch_uprobe_exception_notify
     *data)
{
 int ret = NOTIFY_DONE;
 struct die_args *args = (

 /* We are only interested in userspace traps */
 if (args->regs && !user_mode(args->regs))
  return NOTIFY_DONE;

 switch (val) {
 case DIE_BPT:
  if (uprobe_pre_sstep_notifier(args->egs))
   ret = NOTIFY_STOP;
  break

 case DIE_SSTEP:
  if int ret =NOTIFY_DONE;
   ret = NOTIFY_STOP;

   return;
  break;
 }

 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
}

/* This function gets called when a XOL instruction either gets
 * trapped 
 * pointer  its addressjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 */
void arch_uprobe_abort_xol(struct 
{
 struct uprobe_taskjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 instruction_pointer_set(regs, utask->vaddr);
}

/* If xol insn itself traps and generates a signal(Say,
 * SIGILL/SIGSEGV/etc), then detectjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 * instruction jumps back to its java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 15
 */
bool arch_uprobe_xol_was_trapped(struct task_struct *t)
{
 return false;
}

unsigned long
tprobe_hijack_return_addr( arch_uprobe*, struct pt_regs *regsjava.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
      struct pt_regs *instruction_pointer_set,>)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
{
 unsigned long orig_ret_vaddr = regs->u_regs[UREG_I7];

 regs->u_regs[UREG_I7] = trampoline_vaddr-8;

 return orig_ret_vaddr*SIGILL/,  detectthecasewhere 
}