powerpc/ptrace: split out SPE related functions. (60ef9dbd) · Commits · 戴 / test

arch/powerpc/kernel/ptrace/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -12,3 +12,4 @@ ifneq ($(CONFIG_VSX),y)
		obj-y += ptrace-novsx.o
		endif
		obj-$(CONFIG_ALTIVEC) += ptrace-altivec.o
		obj-$(CONFIG_SPE) += ptrace-spe.o

arch/powerpc/kernel/ptrace/ptrace-decl.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,15 @@ int vr_set(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf);

		/* ptrace-spe */

		int evr_active(struct task_struct target, const struct user_regset regset);
		int evr_get(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count, void kbuf, void __user ubuf);
		int evr_set(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf);

		/* ptrace */

		#ifdef CONFIG_PPC_TRANSACTIONAL_MEM

arch/powerpc/kernel/ptrace/ptrace-spe.c

0 → 100644

+68 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-or-later

		#include <linux/regset.h>

		#include <asm/switch_to.h>

		#include "ptrace-decl.h"

		/*
		* For get_evrregs/set_evrregs functions 'data' has the following layout:
		*
		* struct {
		* u32 evr[32];
		* u64 acc;
		* u32 spefscr;
		* }
		*/

		int evr_active(struct task_struct target, const struct user_regset regset)
		{
		flush_spe_to_thread(target);
		return target->thread.used_spe ? regset->n : 0;
		}

		int evr_get(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count, void kbuf, void __user ubuf)
		{
		int ret;

		flush_spe_to_thread(target);

		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
		&target->thread.evr,
		0, sizeof(target->thread.evr));

		BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
		offsetof(struct thread_struct, spefscr));

		if (!ret)
		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
		&target->thread.acc,
		sizeof(target->thread.evr), -1);

		return ret;
		}

		int evr_set(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		int ret;

		flush_spe_to_thread(target);

		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
		&target->thread.evr,
		0, sizeof(target->thread.evr));

		BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
		offsetof(struct thread_struct, spefscr));

		if (!ret)
		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
		&target->thread.acc,
		sizeof(target->thread.evr), -1);

		return ret;
		}

arch/powerpc/kernel/ptrace/ptrace.c

+0 −66

Original line number	Diff line number	Diff line
		@@ -403,72 +403,6 @@ static int gpr_set(struct task_struct target, const struct user_regset regset,
		return ret;
		}

		#ifdef CONFIG_SPE

		/*
		* For get_evrregs/set_evrregs functions 'data' has the following layout:
		*
		* struct {
		* u32 evr[32];
		* u64 acc;
		* u32 spefscr;
		* }
		*/

		static int evr_active(struct task_struct *target,
		const struct user_regset *regset)
		{
		flush_spe_to_thread(target);
		return target->thread.used_spe ? regset->n : 0;
		}

		static int evr_get(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count,
		void kbuf, void __user ubuf)
		{
		int ret;

		flush_spe_to_thread(target);

		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
		&target->thread.evr,
		0, sizeof(target->thread.evr));

		BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
		offsetof(struct thread_struct, spefscr));

		if (!ret)
		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
		&target->thread.acc,
		sizeof(target->thread.evr), -1);

		return ret;
		}

		static int evr_set(struct task_struct target, const struct user_regset regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		int ret;

		flush_spe_to_thread(target);

		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
		&target->thread.evr,
		0, sizeof(target->thread.evr));

		BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
		offsetof(struct thread_struct, spefscr));

		if (!ret)
		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
		&target->thread.acc,
		sizeof(target->thread.evr), -1);

		return ret;
		}
		#endif /* CONFIG_SPE */

		#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
		/**
		* tm_cgpr_active - get active number of registers in CGPR

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