diff options
| author |   Zi Shen Lim <zlim.lnx@gmail.com> | 2016-06-08 21:18:50 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-06-10 23:11:50 -0700 |
| commit | 643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb (patch) | |
| tree | c8fe63136f80a4557e5bbb10b3ac2d18881e04c0 /arch | |
| parent | arm64: bpf: optimize JMP_CALL (diff) | |
| download | linux-dev-643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb.tar.xz linux-dev-643c332d519bdfbf80d21f40d1c0aa0ccf3ec1cb.zip | |
arm64: bpf: optimize LD_ABS, LD_IND
Remove superfluous stack frame, saving us 3 instructions for every
LD_ABS or LD_IND.
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/net/bpf_jit_comp.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 7ae304e0a078..b2fc97a2c56c 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -731,11 +731,8 @@ emit_cond_jmp: emit_a64_mov_i64(r3, size, ctx); emit(A64_SUB_I(1, r4, fp, STACK_SIZE), ctx); emit_a64_mov_i64(r5, (unsigned long)bpf_load_pointer, ctx); - emit(A64_PUSH(A64_FP, A64_LR, A64_SP), ctx); - emit(A64_MOV(1, A64_FP, A64_SP), ctx); emit(A64_BLR(r5), ctx); emit(A64_MOV(1, r0, A64_R(0)), ctx); - emit(A64_POP(A64_FP, A64_LR, A64_SP), ctx); jmp_offset = epilogue_offset(ctx); check_imm19(jmp_offset); |