/*
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* linux/arch/h8300/kernel/ptrace_h8s.c
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* ptrace cpu depend helper functions
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*
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* Yoshinori Sato <ysato@users.sourceforge.jp>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of
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* this archive for more details.
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*/
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#include <linux/linkage.h>
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#include <linux/sched/signal.h>
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#include <linux/errno.h>
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#include <asm/ptrace.h>
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#define CCR_MASK 0x6f
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#define EXR_TRACE 0x80
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/* disable singlestep */
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void user_disable_single_step(struct task_struct *child)
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{
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unsigned char exr;
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exr = h8300_get_reg(child, PT_EXR);
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exr &= ~EXR_TRACE;
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h8300_put_reg(child, PT_EXR, exr);
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}
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/* enable singlestep */
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void user_enable_single_step(struct task_struct *child)
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{
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unsigned char exr;
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exr = h8300_get_reg(child, PT_EXR);
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exr |= EXR_TRACE;
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h8300_put_reg(child, PT_EXR, exr);
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}
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asmlinkage void trace_trap(unsigned long bp)
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{
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(void)bp;
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force_sig(SIGTRAP);
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}
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