1 2 #include <linux/errno.h> 3 #include <linux/kernel.h> 4 #include <linux/perf_event.h> 5 #include <linux/bug.h> 6 #include <asm/perf_regs.h> 7 #include <asm/ptrace.h> 8 9 u64 perf_reg_value(struct pt_regs *regs, int idx) 10 { 11 if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM_MAX)) 12 return 0; 13 14 return regs->uregs[idx]; 15 } 16 17 #define REG_RESERVED (~((1ULL << PERF_REG_ARM_MAX) - 1)) 18 19 int perf_reg_validate(u64 mask) 20 { 21 if (!mask || mask & REG_RESERVED) 22 return -EINVAL; 23 24 return 0; 25 } 26 27 u64 perf_reg_abi(struct task_struct *task) 28 { 29 return PERF_SAMPLE_REGS_ABI_32; 30 } 31 32 void perf_get_regs_user(struct perf_regs *regs_user, 33 struct pt_regs *regs, 34 struct pt_regs *regs_user_copy) 35 { 36 regs_user->regs = task_pt_regs(current); 37 regs_user->abi = perf_reg_abi(current); 38 } 39