diff options
Diffstat (limited to 'arch/sparc/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/sparc/net/bpf_jit_comp.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c index 1f76c22a6a75..ece4af0575e9 100644 --- a/arch/sparc/net/bpf_jit_comp.c +++ b/arch/sparc/net/bpf_jit_comp.c @@ -184,7 +184,7 @@ do { \ */ #define emit_alu_K(OPCODE, K) \ do { \ - if (K) { \ + if (K || OPCODE == AND || OPCODE == MUL) { \ unsigned int _insn = OPCODE; \ _insn |= RS1(r_A) | RD(r_A); \ if (is_simm13(K)) { \ @@ -234,12 +234,18 @@ do { BUILD_BUG_ON(FIELD_SIZEOF(STRUCT, FIELD) != sizeof(u8)); \ __emit_load8(BASE, STRUCT, FIELD, DEST); \ } while (0) -#define emit_ldmem(OFF, DEST) \ -do { *prog++ = LD32I | RS1(FP) | S13(-(OFF)) | RD(DEST); \ +#ifdef CONFIG_SPARC64 +#define BIAS (STACK_BIAS - 4) +#else +#define BIAS (-4) +#endif + +#define emit_ldmem(OFF, DEST) \ +do { *prog++ = LD32I | RS1(SP) | S13(BIAS - (OFF)) | RD(DEST); \ } while (0) -#define emit_stmem(OFF, SRC) \ -do { *prog++ = LD32I | RS1(FP) | S13(-(OFF)) | RD(SRC); \ +#define emit_stmem(OFF, SRC) \ +do { *prog++ = ST32I | RS1(SP) | S13(BIAS - (OFF)) | RD(SRC); \ } while (0) #ifdef CONFIG_SMP @@ -615,10 +621,11 @@ void bpf_jit_compile(struct bpf_prog *fp) case BPF_ANC | SKF_AD_VLAN_TAG: case BPF_ANC | SKF_AD_VLAN_TAG_PRESENT: emit_skb_load16(vlan_tci, r_A); - if (code == (BPF_ANC | SKF_AD_VLAN_TAG)) { - emit_andi(r_A, VLAN_VID_MASK, r_A); + if (code != (BPF_ANC | SKF_AD_VLAN_TAG)) { + emit_alu_K(SRL, 12); + emit_andi(r_A, 1, r_A); } else { - emit_loadimm(VLAN_TAG_PRESENT, r_TMP); + emit_loadimm(~VLAN_TAG_PRESENT, r_TMP); emit_and(r_A, r_TMP, r_A); } break; @@ -630,15 +637,19 @@ void bpf_jit_compile(struct bpf_prog *fp) emit_loadimm(K, r_X); break; case BPF_LD | BPF_MEM: + seen |= SEEN_MEM; emit_ldmem(K * 4, r_A); break; case BPF_LDX | BPF_MEM: + seen |= SEEN_MEM | SEEN_XREG; emit_ldmem(K * 4, r_X); break; case BPF_ST: + seen |= SEEN_MEM; emit_stmem(K * 4, r_A); break; case BPF_STX: + seen |= SEEN_MEM | SEEN_XREG; emit_stmem(K * 4, r_X); break; |