bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 06:44:00 -04:00
Code Issues Packages Projects Releases Wiki Activity

riscv, bpf: Unify 32-bit sign-extension to emit_sextw

Browse Source 
For code unification, add emit_sextw wrapper to unify all the 32-bit
sign-extension operations.

Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Acked-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/bpf/20240115131235.2914289-2-pulehui@huaweicloud.com
This commit is contained in:
Pu Lehui
2024-01-15 13:12:30 +00:00
committed by Daniel Borkmann
parent ad57654053
commit e33758f749
2 changed files with 10 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/riscv/net/bpf_jit.h
View File

@@ -1087,6 +1087,11 @@ static inline void emit_subw(u8 rd, u8 rs1, u8 rs2, struct rv_jit_context *ctx)
emit(rv_subw(rd, rs1, rs2), ctx);
}
static inline void emit_sextw(u8 rd, u8 rs, struct rv_jit_context *ctx)
{
emit_addiw(rd, rs, 0, ctx);
}
#endif /* __riscv_xlen == 64 */
void bpf_jit_build_prologue(struct rv_jit_context *ctx);