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47 lines
1.4 KiB
47 lines
1.4 KiB
/* 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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