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/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef _RISCV_KERNEL_PROBES_SIMULATE_INSN_H
#define _RISCV_KERNEL_PROBES_SIMULATE_INSN_H
#define __RISCV_INSN_FUNCS(name, mask, val) \
static __always_inline bool riscv_insn_is_##name(probe_opcode_t code) \
{ \
BUILD_BUG_ON(~(mask) & (val)); \
return (code & (mask)) == (val); \
} \
bool simulate_##name(u32 opcode, unsigned long addr, \
struct pt_regs *regs)
#define RISCV_INSN_REJECTED(name, code) \
do { \
if (riscv_insn_is_##name(code)) { \
return INSN_REJECTED; \
} \
} while (0)
__RISCV_INSN_FUNCS(system, 0x7f, 0x73);
__RISCV_INSN_FUNCS(fence, 0x7f, 0x0f);
#define RISCV_INSN_SET_SIMULATE(name, code) \
do { \
if (riscv_insn_is_##name(code)) { \
api->handler = simulate_##name; \
return INSN_GOOD_NO_SLOT; \
} \
} while (0)
__RISCV_INSN_FUNCS(c_j, 0xe003, 0xa001);
__RISCV_INSN_FUNCS(c_jr, 0xf007, 0x8002);
__RISCV_INSN_FUNCS(c_jal, 0xe003, 0x2001);
__RISCV_INSN_FUNCS(c_jalr, 0xf007, 0x9002);
__RISCV_INSN_FUNCS(c_beqz, 0xe003, 0xc001);
__RISCV_INSN_FUNCS(c_bnez, 0xe003, 0xe001);
__RISCV_INSN_FUNCS(c_ebreak, 0xffff, 0x9002);
__RISCV_INSN_FUNCS(auipc, 0x7f, 0x17);
__RISCV_INSN_FUNCS(branch, 0x7f, 0x63);
__RISCV_INSN_FUNCS(jal, 0x7f, 0x6f);
__RISCV_INSN_FUNCS(jalr, 0x707f, 0x67);
#endif /* _RISCV_KERNEL_PROBES_SIMULATE_INSN_H */
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