diff options
| author | jkim <jkim@FreeBSD.org> | 2008-08-12 20:10:45 +0000 |
|---|---|---|
| committer | jkim <jkim@FreeBSD.org> | 2008-08-12 20:10:45 +0000 |
| commit | 5bf34e3e87fc944decb9cd18e97fe744117ac2f0 (patch) | |
| tree | e54bdead5bbcf6e1613af28d396cacd942b6866b /sys/amd64/amd64/bpf_jit_machdep.c | |
| parent | 510c672e13b9748ab91e72576bf72a6ac7a325af (diff) | |
| download | FreeBSD-src-5bf34e3e87fc944decb9cd18e97fe744117ac2f0.zip FreeBSD-src-5bf34e3e87fc944decb9cd18e97fe744117ac2f0.tar.gz | |
Replace all stack usages with registers and remove unused macros.
Diffstat (limited to 'sys/amd64/amd64/bpf_jit_machdep.c')
| -rw-r--r-- | sys/amd64/amd64/bpf_jit_machdep.c | 82 |
1 files changed, 40 insertions, 42 deletions
diff --git a/sys/amd64/amd64/bpf_jit_machdep.c b/sys/amd64/amd64/bpf_jit_machdep.c index d04ae2e..08e84f4 100644 --- a/sys/amd64/amd64/bpf_jit_machdep.c +++ b/sys/amd64/amd64/bpf_jit_machdep.c @@ -131,12 +131,10 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) ins = prog; /* create the procedure header */ - PUSH(RBP); - MOVrq(RSP, RBP); - MOVdoq(ESI, -8, RBP); - MOVdoq(EDX, -12, RBP); - PUSH(RBX); + MOVrq2(RBX, R8); MOVrq(RDI, RBX); + MOVrd2(ESI, R9D); + MOVrd(EDX, EDI); for (i = 0; i < nins; i++) { stream.bpf_pc++; @@ -147,24 +145,24 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) case BPF_RET|BPF_K: MOVid(ins->k, EAX); - POP(RBX); - LEAVE_RET(); + MOVrq3(R8, RBX); + RET(); break; case BPF_RET|BPF_A: - POP(RBX); - LEAVE_RET(); + MOVrq3(R8, RBX); + RET(); break; case BPF_LD|BPF_W|BPF_ABS: MOVid(ins->k, ECX); MOVrd(ECX, ESI); ADDib(sizeof(int), ECX); - CMPoqd(-12, RBP, ECX); - JLEb(5); + CMPrd(EDI, ECX); + JLEb(6); ZEROrd(EAX); - POP(RBX); - LEAVE_RET(); + MOVrq3(R8, RBX); + RET(); MOVobd(RBX, RSI, EAX); BSWAP(EAX); break; @@ -174,10 +172,10 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) MOVid(ins->k, ECX); MOVrd(ECX, ESI); ADDib(sizeof(short), ECX); - CMPoqd(-12, RBP, ECX); - JLEb(3); - POP(RBX); - LEAVE_RET(); + CMPrd(EDI, ECX); + JLEb(4); + MOVrq3(R8, RBX); + RET(); MOVobw(RBX, RSI, AX); SWAP_AX(); break; @@ -185,19 +183,19 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) case BPF_LD|BPF_B|BPF_ABS: ZEROrd(EAX); MOVid(ins->k, ECX); - CMPoqd(-12, RBP, ECX); - JLEb(3); - POP(RBX); - LEAVE_RET(); + CMPrd(EDI, ECX); + JLEb(4); + MOVrq3(R8, RBX); + RET(); MOVobb(RBX, RCX, AL); break; case BPF_LD|BPF_W|BPF_LEN: - MOVoqd(-8, RBP, EAX); + MOVrd3(R9D, EAX); break; case BPF_LDX|BPF_W|BPF_LEN: - MOVoqd(-8, RBP, EDX); + MOVrd3(R9D, EDX); break; case BPF_LD|BPF_W|BPF_IND: @@ -205,11 +203,11 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) ADDrd(EDX, ECX); MOVrd(ECX, ESI); ADDib(sizeof(int), ECX); - CMPoqd(-12, RBP, ECX); - JLEb(5); + CMPrd(EDI, ECX); + JLEb(6); ZEROrd(EAX); - POP(RBX); - LEAVE_RET(); + MOVrq3(R8, RBX); + RET(); MOVobd(RBX, RSI, EAX); BSWAP(EAX); break; @@ -220,10 +218,10 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) ADDrd(EDX, ECX); MOVrd(ECX, ESI); ADDib(sizeof(short), ECX); - CMPoqd(-12, RBP, ECX); - JLEb(3); - POP(RBX); - LEAVE_RET(); + CMPrd(EDI, ECX); + JLEb(4); + MOVrq3(R8, RBX); + RET(); MOVobw(RBX, RSI, AX); SWAP_AX(); break; @@ -232,20 +230,20 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) ZEROrd(EAX); MOVid(ins->k, ECX); ADDrd(EDX, ECX); - CMPoqd(-12, RBP, ECX); - JLEb(3); - POP(RBX); - LEAVE_RET(); + CMPrd(EDI, ECX); + JLEb(4); + MOVrq3(R8, RBX); + RET(); MOVobb(RBX, RCX, AL); break; case BPF_LDX|BPF_MSH|BPF_B: MOVid(ins->k, ECX); - CMPoqd(-12, RBP, ECX); - JLEb(5); + CMPrd(EDI, ECX); + JLEb(6); ZEROrd(EAX); - POP(RBX); - LEAVE_RET(); + MOVrq3(R8, RBX); + RET(); ZEROrd(EDX); MOVobb(RBX, RCX, DL); ANDib(0xf, DL); @@ -377,10 +375,10 @@ bpf_jit_compile(struct bpf_insn *prog, u_int nins, int *mem) case BPF_ALU|BPF_DIV|BPF_X: CMPid(0, EDX); - JNEb(5); + JNEb(6); ZEROrd(EAX); - POP(RBX); - LEAVE_RET(); + MOVrq3(R8, RBX); + RET(); MOVrd(EDX, ECX); ZEROrd(EDX); DIVrd(ECX); |
