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