7b99ed4e8e
Move CONFIG_VSX functions out of ptrace.c, into ptrace-vsx.c and ptrace-novsx.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/dc8e20c8c95b7e83add0c6dd48f9470628896c5c.1582848567.git.christophe.leroy@c-s.fr
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
// 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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* Regardless of transactions, 'fp_state' holds the current running
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* value of all FPR registers and 'ckfp_state' holds the last checkpointed
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* value of all FPR registers for the current transaction.
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*
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* Userspace interface buffer layout:
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*
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* struct data {
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* u64 fpr[32];
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* u64 fpscr;
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* };
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*/
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int fpr_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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BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
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offsetof(struct thread_fp_state, fpr[32]));
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flush_fp_to_thread(target);
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return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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&target->thread.fp_state, 0, -1);
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}
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/*
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* Regardless of transactions, 'fp_state' holds the current running
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* value of all FPR registers and 'ckfp_state' holds the last checkpointed
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* value of all FPR registers for the current transaction.
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*
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* Userspace interface buffer layout:
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*
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* struct data {
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* u64 fpr[32];
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* u64 fpscr;
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* };
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*
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*/
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int fpr_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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BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
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offsetof(struct thread_fp_state, fpr[32]));
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flush_fp_to_thread(target);
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return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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&target->thread.fp_state, 0, -1);
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}
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