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60 lines
1.4 KiB
60 lines
1.4 KiB
// 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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struct membuf to) |
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{ |
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flush_spe_to_thread(target); |
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membuf_write(&to, &target->thread.evr, 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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return membuf_write(&to, &target->thread.acc, |
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sizeof(u64) + sizeof(u32)); |
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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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