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bpf, sparc64: implement jiting of BPF_J{LT, LE, SLT, SLE}

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This work implements jiting of BPF_J{LT,LE,SLT,SLE} instructions
with BPF_X/BPF_K variants for the sparc64 eBPF JIT.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2017-08-10 01:39:58 +02:00 committed by David S. Miller
parent c362b2f34e
commit 18423550e3
1 changed files with 34 additions and 0 deletions
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34
arch/sparc/net/bpf_jit_comp_64.c
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@ -128,6 +128,8 @@ static u32 WDISP10(u32 off)
#define BA (BRANCH | CONDA)
#define BG (BRANCH | CONDG)
#define BL (BRANCH | CONDL)
#define BLE (BRANCH | CONDLE)
#define BGU (BRANCH | CONDGU)
#define BLEU (BRANCH | CONDLEU)
#define BGE (BRANCH | CONDGE)
@ -715,9 +717,15 @@ static int emit_compare_and_branch(const u8 code, const u8 dst, u8 src,
case BPF_JGT:
br_opcode = BGU;
break;
case BPF_JLT:
br_opcode = BLU;
break;
case BPF_JGE:
br_opcode = BGEU;
break;
case BPF_JLE:
br_opcode = BLEU;
break;
case BPF_JSET:
case BPF_JNE:
br_opcode = BNE;
@ -725,9 +733,15 @@ static int emit_compare_and_branch(const u8 code, const u8 dst, u8 src,
case BPF_JSGT:
br_opcode = BG;
break;
case BPF_JSLT:
br_opcode = BL;
break;
case BPF_JSGE:
br_opcode = BGE;
break;
case BPF_JSLE:
br_opcode = BLE;
break;
default:
/* Make sure we dont leak kernel information to the
* user.
@ -746,18 +760,30 @@ static int emit_compare_and_branch(const u8 code, const u8 dst, u8 src,
case BPF_JGT:
cbcond_opcode = CBCONDGU;
break;
case BPF_JLT:
cbcond_opcode = CBCONDLU;
break;
case BPF_JGE:
cbcond_opcode = CBCONDGEU;
break;
case BPF_JLE:
cbcond_opcode = CBCONDLEU;
break;
case BPF_JNE:
cbcond_opcode = CBCONDNE;
break;
case BPF_JSGT:
cbcond_opcode = CBCONDG;
break;
case BPF_JSLT:
cbcond_opcode = CBCONDL;
break;
case BPF_JSGE:
cbcond_opcode = CBCONDGE;
break;
case BPF_JSLE:
cbcond_opcode = CBCONDLE;
break;
default:
/* Make sure we dont leak kernel information to the
* user.
@ -1176,10 +1202,14 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
/* IF (dst COND src) JUMP off */
case BPF_JMP | BPF_JEQ | BPF_X:
case BPF_JMP | BPF_JGT | BPF_X:
case BPF_JMP | BPF_JLT | BPF_X:
case BPF_JMP | BPF_JGE | BPF_X:
case BPF_JMP | BPF_JLE | BPF_X:
case BPF_JMP | BPF_JNE | BPF_X:
case BPF_JMP | BPF_JSGT | BPF_X:
case BPF_JMP | BPF_JSLT | BPF_X:
case BPF_JMP | BPF_JSGE | BPF_X:
case BPF_JMP | BPF_JSLE | BPF_X:
case BPF_JMP | BPF_JSET | BPF_X: {
int err;
@ -1191,10 +1221,14 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
/* IF (dst COND imm) JUMP off */
case BPF_JMP | BPF_JEQ | BPF_K:
case BPF_JMP | BPF_JGT | BPF_K:
case BPF_JMP | BPF_JLT | BPF_K:
case BPF_JMP | BPF_JGE | BPF_K:
case BPF_JMP | BPF_JLE | BPF_K:
case BPF_JMP | BPF_JNE | BPF_K:
case BPF_JMP | BPF_JSGT | BPF_K:
case BPF_JMP | BPF_JSLT | BPF_K:
case BPF_JMP | BPF_JSGE | BPF_K:
case BPF_JMP | BPF_JSLE | BPF_K:
case BPF_JMP | BPF_JSET | BPF_K: {
int err;