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Member "reptyr-reptyr-0.8.0/platform/linux/arch/x86_common.h" (29 Sep 2020, 2185 Bytes) of package /linux/privat/reptyr-reptyr-0.8.0.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 
   23 struct x86_personality {
   24     size_t orig_ax;
   25     size_t ax;
   26 };
   27 
   28 struct x86_personality x86_personality[];
   29 
   30 static inline struct x86_personality *x86_pers(struct ptrace_child *child) {
   31     return &x86_personality[child->personality];
   32 }
   33 
   34 static inline void arch_fixup_regs(struct ptrace_child *child) {
   35     struct x86_personality *x86pers = x86_pers(child);
   36     struct ptrace_personality *pers = personality(child);
   37     struct user_regs_struct *regs = &child->regs;
   38     *ptr(regs, pers->reg_ip) -= 2;
   39     *ptr(regs, x86pers->ax) = *ptr(regs, x86pers->orig_ax);
   40 }
   41 
   42 static inline int arch_set_syscall(struct ptrace_child *child,
   43                                    unsigned long sysno) {
   44     return ptrace_command(child, PTRACE_POKEUSER,
   45                           x86_pers(child)->orig_ax,
   46                           sysno);
   47 }
   48 
   49 static inline int arch_save_syscall(struct ptrace_child *child) {
   50     child->saved_syscall = *ptr(&child->regs, x86_pers(child)->orig_ax);
   51     return 0;
   52 }
   53 
   54 static inline int arch_restore_syscall(struct ptrace_child *child) {
   55     return 0;
   56 }