leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

bpf, docs: Document the opcode classes

Browse Source 
Add a description for each opcode class.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220103183556.41040-4-hch@lst.de
This commit is contained in:
Christoph Hellwig 2022-01-03 19:35:53 +01:00 committed by Alexei Starovoitov
parent be3193cded
commit 894cda554c
1 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
Documentation/bpf/instruction-set.rst
View File

@ -38,18 +38,18 @@ Instruction classes
The three LSB bits of the 'opcode' field store the instruction class:
========= =====
class value
========= =====
BPF_LD 0x00
BPF_LDX 0x01
BPF_ST 0x02
BPF_STX 0x03
BPF_ALU 0x04
BPF_JMP 0x05
BPF_JMP32 0x06
BPF_ALU64 0x07
========= =====
========= ===== ===============================
class value description
========= ===== ===============================
BPF_LD 0x00 non-standard load operations
BPF_LDX 0x01 load into register operations
BPF_ST 0x02 store from immediate operations
BPF_STX 0x03 store from register operations
BPF_ALU 0x04 32-bit arithmetic operations
BPF_JMP 0x05 64-bit jump operations
BPF_JMP32 0x06 32-bit jump operations
BPF_ALU64 0x07 64-bit arithmetic operations
========= ===== ===============================
Arithmetic and jump instructions
================================