94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _RUNTIME_INSTR_H
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#define _RUNTIME_INSTR_H
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#define S390_RUNTIME_INSTR_START 0x1
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#define S390_RUNTIME_INSTR_STOP 0x2
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struct runtime_instr_cb {
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__u64 rca;
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__u64 roa;
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__u64 rla;
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__u32 v : 1;
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__u32 s : 1;
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__u32 k : 1;
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__u32 h : 1;
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__u32 a : 1;
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__u32 reserved1 : 3;
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__u32 ps : 1;
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__u32 qs : 1;
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__u32 pc : 1;
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__u32 qc : 1;
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__u32 reserved2 : 1;
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__u32 g : 1;
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__u32 u : 1;
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__u32 l : 1;
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__u32 key : 4;
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__u32 reserved3 : 8;
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__u32 t : 1;
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__u32 rgs : 3;
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__u32 m : 4;
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__u32 n : 1;
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__u32 mae : 1;
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__u32 reserved4 : 2;
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__u32 c : 1;
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__u32 r : 1;
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__u32 b : 1;
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__u32 j : 1;
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__u32 e : 1;
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__u32 x : 1;
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__u32 reserved5 : 2;
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__u32 bpxn : 1;
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__u32 bpxt : 1;
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__u32 bpti : 1;
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__u32 bpni : 1;
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__u32 reserved6 : 2;
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__u32 d : 1;
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__u32 f : 1;
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__u32 ic : 4;
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__u32 dc : 4;
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__u64 reserved7;
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__u64 sf;
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__u64 rsic;
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__u64 reserved8;
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} __packed __aligned(8);
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extern struct runtime_instr_cb runtime_instr_empty_cb;
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static inline void load_runtime_instr_cb(struct runtime_instr_cb *cb)
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{
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asm volatile(".insn rsy,0xeb0000000060,0,0,%0" /* LRIC */
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: : "Q" (*cb));
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}
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static inline void store_runtime_instr_cb(struct runtime_instr_cb *cb)
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{
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asm volatile(".insn rsy,0xeb0000000061,0,0,%0" /* STRIC */
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: "=Q" (*cb) : : "cc");
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}
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static inline void save_ri_cb(struct runtime_instr_cb *cb_prev)
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{
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if (cb_prev)
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store_runtime_instr_cb(cb_prev);
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}
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static inline void restore_ri_cb(struct runtime_instr_cb *cb_next,
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struct runtime_instr_cb *cb_prev)
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{
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if (cb_next)
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load_runtime_instr_cb(cb_next);
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else if (cb_prev)
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load_runtime_instr_cb(&runtime_instr_empty_cb);
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}
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struct task_struct;
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void runtime_instr_release(struct task_struct *tsk);
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#endif /* _RUNTIME_INSTR_H */
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