powerpc/ptrace: split out SPE related functions.
Move CONFIG_SPE functions out of ptrace.c, into ptrace-spe.c Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/0f17a331760310b5562fae3791cdd3cf9c64237b.1582848567.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy
Michael Ellerman
Родитель
1b20773b00
Коммит
60ef9dbd9d
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@ -12,3 +12,4 @@ ifneq ($(CONFIG_VSX),y)
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obj-y += ptrace-novsx.o
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endif
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obj-$(CONFIG_ALTIVEC) += ptrace-altivec.o
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obj-$(CONFIG_SPE) += ptrace-spe.o
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@ -26,6 +26,15 @@ int vr_set(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count,
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const void *kbuf, const void __user *ubuf);
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/* ptrace-spe */
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int evr_active(struct task_struct *target, const struct user_regset *regset);
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int evr_get(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf);
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int evr_set(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count,
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const void *kbuf, const void __user *ubuf);
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/* ptrace */
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#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
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@ -0,0 +1,68 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <linux/regset.h>
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#include <asm/switch_to.h>
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#include "ptrace-decl.h"
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/*
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* For get_evrregs/set_evrregs functions 'data' has the following layout:
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*
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* struct {
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* u32 evr[32];
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* u64 acc;
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* u32 spefscr;
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* }
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*/
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int evr_active(struct task_struct *target, const struct user_regset *regset)
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{
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flush_spe_to_thread(target);
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return target->thread.used_spe ? regset->n : 0;
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}
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int evr_get(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf)
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{
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int ret;
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flush_spe_to_thread(target);
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ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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&target->thread.evr,
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0, sizeof(target->thread.evr));
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BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
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offsetof(struct thread_struct, spefscr));
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if (!ret)
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ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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&target->thread.acc,
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sizeof(target->thread.evr), -1);
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return ret;
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}
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int evr_set(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count,
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const void *kbuf, const void __user *ubuf)
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{
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int ret;
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flush_spe_to_thread(target);
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ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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&target->thread.evr,
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0, sizeof(target->thread.evr));
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BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
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offsetof(struct thread_struct, spefscr));
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if (!ret)
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ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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&target->thread.acc,
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sizeof(target->thread.evr), -1);
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return ret;
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}
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@ -403,72 +403,6 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset,
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return ret;
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}
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#ifdef CONFIG_SPE
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/*
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* For get_evrregs/set_evrregs functions 'data' has the following layout:
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*
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* struct {
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* u32 evr[32];
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* u64 acc;
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* u32 spefscr;
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* }
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*/
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static int evr_active(struct task_struct *target,
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const struct user_regset *regset)
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{
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flush_spe_to_thread(target);
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return target->thread.used_spe ? regset->n : 0;
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}
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static int evr_get(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count,
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void *kbuf, void __user *ubuf)
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{
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int ret;
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flush_spe_to_thread(target);
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ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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&target->thread.evr,
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0, sizeof(target->thread.evr));
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BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
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offsetof(struct thread_struct, spefscr));
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if (!ret)
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ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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&target->thread.acc,
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sizeof(target->thread.evr), -1);
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return ret;
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}
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static int evr_set(struct task_struct *target, const struct user_regset *regset,
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unsigned int pos, unsigned int count,
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const void *kbuf, const void __user *ubuf)
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{
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int ret;
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flush_spe_to_thread(target);
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ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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&target->thread.evr,
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0, sizeof(target->thread.evr));
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BUILD_BUG_ON(offsetof(struct thread_struct, acc) + sizeof(u64) !=
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offsetof(struct thread_struct, spefscr));
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if (!ret)
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ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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&target->thread.acc,
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sizeof(target->thread.evr), -1);
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return ret;
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}
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#endif /* CONFIG_SPE */
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#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
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/**
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* tm_cgpr_active - get active number of registers in CGPR
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