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Member "reptyr-reptyr-0.8.0/platform/freebsd/arch/x86_common.h" (29 Sep 2020, 2876 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 ax;
   25 };
   26 
   27 struct x86_personality x86_personality[];
   28 
   29 static inline struct x86_personality *x86_pers(struct ptrace_child *child) {
   30     return &x86_personality[child->personality];
   31 }
   32 
   33 static inline void arch_fixup_regs(struct ptrace_child *child) {
   34     struct x86_personality *x86pers = x86_pers(child);
   35     struct ptrace_personality *pers = personality(child);
   36     struct reg *regs = &child->regs;
   37 #define ptr(regs, off) ((unsigned long*)((void*)(regs)+(off)))
   38     *ptr(regs, pers->reg_ip) -= 2;
   39     *ptr(regs, x86pers->ax) = child->saved_syscall;
   40     //*ptr(user, x86pers->ax) = *ptr(user, x86pers->orig_ax);
   41     //https://lists.freebsd.org/pipermail/freebsd-hackers/2009-July/029206.html
   42 }
   43 
   44 static inline unsigned long arch_get_register(struct ptrace_child *child, unsigned long oft){
   45     int ret;
   46     struct reg regs;
   47 
   48     ret = ptrace_command(child, PT_GETREGS, &regs);
   49 
   50     return *ptr(&regs,oft);
   51 }
   52 
   53 static inline void arch_set_register(struct ptrace_child *child, unsigned long oft, unsigned long val){
   54     int ret;
   55     struct reg regs;
   56 
   57     ret = ptrace_command(child, PT_GETREGS, &regs);
   58     *ptr(&regs,oft)=val;
   59     ret = ptrace_command(child, PT_SETREGS, &regs);
   60 }
   61 
   62 static inline int arch_save_syscall(struct ptrace_child *child) {
   63     child->saved_syscall = *ptr(&child->regs, x86_pers(child)->ax);
   64     return 0;
   65 }
   66 
   67 static inline int arch_get_syscall(struct ptrace_child *child,
   68                                    unsigned long sysno) {
   69     return *ptr(&child->regs, personality(child)->syscall_rv);
   70     //return ptrace_command(child, PTRACE_POKEUSER,
   71                           //x86_pers(child)->orig_ax,
   72                           //sysno);
   73 }
   74 
   75 static inline int arch_restore_syscall(struct ptrace_child *child) {
   76     return 0;
   77 }
   78 
   79 #undef ptr