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Member "reptyr-reptyr-0.9.0/platform/linux/arch/arm.h" (12 Jun 2022, 2331 Bytes) of package /linux/privat/reptyr-reptyr-0.9.0.tar.gz:

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    1 /*
    2  * Copyright (C) 2011 by Nelson Elhage
    3  *
    4  * Permission is hereby granted, free of charge, to any person obtaining a copy
    5  * of this software and associated documentation files (the "Software"), to deal
    6  * in the Software without restriction, including without limitation the rights
    7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    8  * copies of the Software, and to permit persons to whom the Software is
    9  * furnished to do so, subject to the following conditions:
   10  *
   11  * The above copyright notice and this permission notice shall be included in
   12  * all copies or substantial portions of the Software.
   13  *
   14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   20  * THE SOFTWARE.
   21  */
   22 static struct ptrace_personality arch_personality[1] = {
   23     {
   24         offsetof(struct user_regs, uregs[0]),
   25         offsetof(struct user_regs, uregs[0]),
   26         offsetof(struct user_regs, uregs[1]),
   27         offsetof(struct user_regs, uregs[2]),
   28         offsetof(struct user_regs, uregs[3]),
   29         offsetof(struct user_regs, uregs[4]),
   30         offsetof(struct user_regs, uregs[5]),
   31         offsetof(struct user_regs, ARM_pc),
   32     }
   33 };
   34 
   35 static inline void arch_fixup_regs(struct ptrace_child *child) {
   36     child->regs.ARM_pc -= 4;
   37 }
   38 
   39 static inline int arch_set_syscall(struct ptrace_child *child,
   40                                    unsigned long sysno) {
   41     return ptrace_command(child, PTRACE_SET_SYSCALL, 0, sysno);
   42 }
   43 
   44 static inline int arch_save_syscall(struct ptrace_child *child) {
   45     unsigned long swi;
   46     swi = ptrace_command(child, PTRACE_PEEKTEXT, child->regs.ARM_pc);
   47     if (child->error)
   48         return -1;
   49     if (swi == 0xef000000)
   50         child->saved_syscall = child->regs.uregs[7];
   51     else
   52         child->saved_syscall = (swi & 0x000fffff);
   53     return 0;
   54 }
   55 
   56 static inline int arch_restore_syscall(struct ptrace_child *child) {
   57     return arch_set_syscall(child, child->saved_syscall);
   58 }