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