/* 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, 0xf07f, 0x8002); __RISCV_INSN_FUNCS(c_jal, 0xe003, 0x2001); __RISCV_INSN_FUNCS(c_jalr, 0xf07f, 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 */