59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2011 by Nelson Elhage
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
static struct ptrace_personality arch_personality[1] = {
|
|
{
|
|
offsetof(struct user, regs.uregs[0]),
|
|
offsetof(struct user, regs.uregs[0]),
|
|
offsetof(struct user, regs.uregs[1]),
|
|
offsetof(struct user, regs.uregs[2]),
|
|
offsetof(struct user, regs.uregs[3]),
|
|
offsetof(struct user, regs.uregs[4]),
|
|
offsetof(struct user, regs.uregs[5]),
|
|
offsetof(struct user, regs.ARM_pc),
|
|
}
|
|
};
|
|
|
|
static inline void arch_fixup_regs(struct ptrace_child *child) {
|
|
child->user.regs.ARM_pc -= 4;
|
|
}
|
|
|
|
static inline int arch_set_syscall(struct ptrace_child *child,
|
|
unsigned long sysno) {
|
|
return ptrace_command(child, PTRACE_SET_SYSCALL, 0, sysno);
|
|
}
|
|
|
|
static inline int arch_save_syscall(struct ptrace_child *child) {
|
|
unsigned long swi;
|
|
swi = ptrace_command(child, PTRACE_PEEKTEXT, child->user.regs.ARM_pc);
|
|
if (child->error)
|
|
return -1;
|
|
if (swi == 0xef000000)
|
|
child->saved_syscall = child->user.regs.uregs[7];
|
|
else
|
|
child->saved_syscall = (swi & 0x000fffff);
|
|
return 0;
|
|
}
|
|
|
|
static inline int arch_restore_syscall(struct ptrace_child *child) {
|
|
return arch_set_syscall(child, child->saved_syscall);
|
|
}
|