On 08/09/2022 10:52 AM, Tiezhu Yang wrote:
BPF programs are normally handled by a BPF interpreter, add BPF JIT
support for LoongArch to allow the kernel to generate native code
when a program is loaded into the kernel, this will significantly
speed-up processing of BPF programs.
Co-developed-by: Youling Tang <tangyouling@xxxxxxxxxxx>
Signed-off-by: Youling Tang <tangyouling@xxxxxxxxxxx>
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
arch/loongarch/Kbuild | 1 +
arch/loongarch/Kconfig | 1 +
arch/loongarch/net/Makefile | 7 +
arch/loongarch/net/bpf_jit.c | 1119 ++++++++++++++++++++++++++++++++++++++++++
arch/loongarch/net/bpf_jit.h | 946 +++++++++++++++++++++++++++++++++++
5 files changed, 2074 insertions(+)
create mode 100644 arch/loongarch/net/Makefile
create mode 100644 arch/loongarch/net/bpf_jit.c
create mode 100644 arch/loongarch/net/bpf_jit.h
[...]
+static inline void emit_ldbu(union loongarch_instruction *insn,
+ enum loongarch_gpr rd, enum loongarch_gpr rj, int imm)
+{
+ insn->reg2i12_format.opcode = ldbu_op;
+ insn->reg2i12_format.immediate = imm;
+ insn->reg2i12_format.rd = rd;
+ insn->reg2i12_format.rj = rj;
+}
+
+static inline void emit_ldhu(union loongarch_instruction *insn,
+ enum loongarch_gpr rd, enum loongarch_gpr rj, int imm)
+{
+ insn->reg2i12_format.opcode = ldhu_op;
+ insn->reg2i12_format.immediate = imm;
+ insn->reg2i12_format.rd = rd;
+ insn->reg2i12_format.rj = rj;
+}
+
Hi, Tiezhu,
These emit_* functions are similar to each other. I'd suggest that
using macro warpper them and keep them in 'inst.h'.
One of ways like follows,
#define DEF_EMIT_REG2I12_FORMAT(NAME,OP) \
static inline void emit_##NAME(union loongarch_instruction *insn, \
enum loongarch_gpr rd, enum loongarch_gpr rj, int imm) \
{ \
insn->reg2i12_format.opcode = OP; \
insn->reg2i12_format.immediate = imm; \
insn->reg2i12_format.rd = rd; \
insn->reg2i12_format.rj = rj; \
}
DEF_EMIT_REG2I12_FORMAT(ldbu, ldbu_op)
DEF_EMIT_REG2I12_FORMAT(ldhu, ldhu_op)
...
[...]
Thanks,
Jinyang
