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39 lines
778 B
39 lines
778 B
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/errno.h> |
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#include <linux/kernel.h> |
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#include <linux/perf_event.h> |
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#include <linux/bug.h> |
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#include <linux/sched/task_stack.h> |
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#include <asm/perf_regs.h> |
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#include <asm/ptrace.h> |
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u64 perf_reg_value(struct pt_regs *regs, int idx) |
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{ |
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if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM_MAX)) |
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return 0; |
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return regs->uregs[idx]; |
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} |
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#define REG_RESERVED (~((1ULL << PERF_REG_ARM_MAX) - 1)) |
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int perf_reg_validate(u64 mask) |
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{ |
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if (!mask || mask & REG_RESERVED) |
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return -EINVAL; |
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return 0; |
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} |
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u64 perf_reg_abi(struct task_struct *task) |
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{ |
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return PERF_SAMPLE_REGS_ABI_32; |
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} |
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void perf_get_regs_user(struct perf_regs *regs_user, |
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struct pt_regs *regs) |
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{ |
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regs_user->regs = task_pt_regs(current); |
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regs_user->abi = perf_reg_abi(current); |
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}
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