| /* Capstone Disassembly Engine */ |
| /* BPF Backend by david942j <david942j@gmail.com>, 2019 */ |
| |
| /* This file defines constants and macros used for parsing a BPF instruction */ |
| |
| #ifndef CS_BPF_CONSTANTS_H |
| #define CS_BPF_CONSTANTS_H |
| |
| #define BPF_CLASS(code) ((code) & 0x7) |
| |
| ///< Instruction classes |
| #define BPF_CLASS_LD 0x00 |
| #define BPF_CLASS_LDX 0x01 |
| #define BPF_CLASS_ST 0x02 |
| #define BPF_CLASS_STX 0x03 |
| #define BPF_CLASS_ALU 0x04 |
| #define BPF_CLASS_JMP 0x05 |
| #define BPF_CLASS_RET 0x06 ///< cBPF only |
| #define BPF_CLASS_MISC 0x07 ///< cBPF only |
| #define BPF_CLASS_ALU64 0x07 ///< eBPF only |
| |
| #define BPF_OP(code) ((code) & 0xf0) |
| |
| ///< Types of ALU instruction |
| #define BPF_ALU_ADD 0x00 |
| #define BPF_ALU_SUB 0x10 |
| #define BPF_ALU_MUL 0x20 |
| #define BPF_ALU_DIV 0x30 |
| #define BPF_ALU_OR 0x40 |
| #define BPF_ALU_AND 0x50 |
| #define BPF_ALU_LSH 0x60 |
| #define BPF_ALU_RSH 0x70 |
| #define BPF_ALU_NEG 0x80 |
| #define BPF_ALU_MOD 0x90 |
| #define BPF_ALU_XOR 0xa0 |
| #define BPF_ALU_MOV 0xb0 ///< eBPF only: mov reg to reg |
| #define BPF_ALU_ARSH 0xc0 ///< eBPF only: sign extending shift right |
| #define BPF_ALU_END 0xd0 ///< eBPF only: endianness conversion |
| |
| ///< Types of jmp instruction |
| #define BPF_JUMP_JA 0x00 ///< goto |
| #define BPF_JUMP_JEQ 0x10 ///< '==' |
| #define BPF_JUMP_JGT 0x20 ///< unsigned '>' |
| #define BPF_JUMP_JGE 0x30 ///< unsigned '>=' |
| #define BPF_JUMP_JSET 0x40 ///< '&' |
| #define BPF_JUMP_JNE 0x50 ///< eBPF only: '!=' */ |
| #define BPF_JUMP_JSGT 0x60 ///< eBPF only: signed '>' |
| #define BPF_JUMP_JSGE 0x70 ///< eBPF only: signed '>=' |
| #define BPF_JUMP_CALL 0x80 ///< eBPF only: function call |
| #define BPF_JUMP_EXIT 0x90 ///< eBPF only: exit |
| #define BPF_JUMP_JLT 0xa0 ///< eBPF only: unsigned '<' |
| #define BPF_JUMP_JLE 0xb0 ///< eBPF only: unsigned '<=' |
| #define BPF_JUMP_JSLT 0xc0 ///< eBPF only: signed '<' |
| #define BPF_JUMP_JSLE 0xd0 ///< eBPF only: signed '<=' |
| |
| #define BPF_SRC(code) ((code) & 0x08) |
| #define BPF_RVAL(code) ((code) & 0x18) /* cBPF only: for return types */ |
| ///< Source operand |
| #define BPF_SRC_K 0x00 |
| #define BPF_SRC_X 0x08 |
| #define BPF_SRC_A 0x10 /* cBPF only */ |
| |
| #define BPF_SRC_LITTLE BPF_SRC_K |
| #define BPF_SRC_BIG BPF_SRC_X |
| |
| #define BPF_SIZE(code) ((code) & 0x18) |
| ///< Size modifier |
| #define BPF_SIZE_W 0x00 ///< word |
| #define BPF_SIZE_H 0x08 ///< half word |
| #define BPF_SIZE_B 0x10 ///< byte |
| #define BPF_SIZE_DW 0x18 ///< eBPF only: double word |
| |
| #define BPF_MODE(code) ((code) & 0xe0) |
| ///< Mode modifier |
| #define BPF_MODE_IMM 0x00 ///< used for 32-bit mov in cBPF and 64-bit in eBPF |
| #define BPF_MODE_ABS 0x20 |
| #define BPF_MODE_IND 0x40 |
| #define BPF_MODE_MEM 0x60 |
| #define BPF_MODE_LEN 0x80 ///< cBPF only, reserved in eBPF |
| #define BPF_MODE_MSH 0xa0 ///< cBPF only, reserved in eBPF |
| #define BPF_MODE_XADD 0xc0 ///< eBPF only: exclusive add |
| |
| #define BPF_MISCOP(code) ((code) & 0x80) |
| ///< Operation of misc |
| #define BPF_MISCOP_TAX 0x00 |
| #define BPF_MISCOP_TXA 0x80 |
| |
| #endif |