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/*
* 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);
}
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