bpf_jit_32.c File Reference

#include <linux/bitops.h>
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/filter.h>
#include <linux/moduleloader.h>
#include <linux/netdevice.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <asm/cacheflush.h>
#include <asm/hwcap.h>
#include "bpf_jit_32.h"

Go to the source code of this file.

Data Structures
struct	jit_ctx

Macros
#define	r_scratch   ARM_R0
#define	r_off   ARM_R1
#define	r_A   ARM_R4
#define	r_X   ARM_R5
#define	r_skb   ARM_R6
#define	r_skb_data   ARM_R7
#define	r_skb_hl   ARM_R8
#define	SCRATCH_SP_OFFSET   0
#define	SCRATCH_OFF(k)   (SCRATCH_SP_OFFSET + (k))
#define	SEEN_MEM   ((1 << BPF_MEMWORDS) - 1)
#define	SEEN_MEM_WORD(k)   (1 << (k))
#define	SEEN_X   (1 << BPF_MEMWORDS)
#define	SEEN_CALL   (1 << (BPF_MEMWORDS + 1))
#define	SEEN_SKB   (1 << (BPF_MEMWORDS + 2))
#define	SEEN_DATA   (1 << (BPF_MEMWORDS + 3))
#define	FLAG_NEED_X_RESET   (1 << 0)
#define	OP_IMM3(op, r1, r2, imm_val, ctx)

Functions
void	bpf_jit_compile (struct sk_filter *fp)
void	bpf_jit_free (struct sk_filter *fp)

Variables
int bpf_jit_enable	__read_mostly

Macro Definition Documentation

#define FLAG_NEED_X_RESET   (1 << 0)

Definition at line 54 of file bpf_jit_32.c.

#define OP_IMM3	(		op,
			r1,
			r2,
			imm_val,
			ctx
	)

Value:

do {                                \
        imm12 = imm8m(imm_val);                 \
        if (imm12 < 0) {                    \
            emit_mov_i_no8m(r_scratch, imm_val, ctx);   \
            emit(op ## _R((r1), (r2), r_scratch), ctx); \
        } else {                        \
            emit(op ## _I((r1), (r2), imm12), ctx);     \
        }                           \
    } while (0)

Definition at line 393 of file bpf_jit_32.c.

#define r_A   ARM_R4

Definition at line 38 of file bpf_jit_32.c.

#define r_off   ARM_R1

Definition at line 37 of file bpf_jit_32.c.

#define r_scratch   ARM_R0

Definition at line 35 of file bpf_jit_32.c.

#define r_skb   ARM_R6

Definition at line 40 of file bpf_jit_32.c.

#define r_skb_data   ARM_R7

Definition at line 41 of file bpf_jit_32.c.

#define r_skb_hl   ARM_R8

Definition at line 42 of file bpf_jit_32.c.

#define r_X   ARM_R5

Definition at line 39 of file bpf_jit_32.c.

#define SCRATCH_OFF

(

k

)

(SCRATCH_SP_OFFSET + (k))

Definition at line 45 of file bpf_jit_32.c.

#define SCRATCH_SP_OFFSET   0

Definition at line 44 of file bpf_jit_32.c.

#define SEEN_CALL   (1 << (BPF_MEMWORDS + 1))

Definition at line 50 of file bpf_jit_32.c.

#define SEEN_DATA   (1 << (BPF_MEMWORDS + 3))

Definition at line 52 of file bpf_jit_32.c.

#define SEEN_MEM   ((1 << BPF_MEMWORDS) - 1)

Definition at line 47 of file bpf_jit_32.c.

#define SEEN_MEM_WORD

(

k

)

(1 << (k))

Definition at line 48 of file bpf_jit_32.c.

#define SEEN_SKB   (1 << (BPF_MEMWORDS + 2))

Definition at line 51 of file bpf_jit_32.c.

#define SEEN_X   (1 << BPF_MEMWORDS)

Definition at line 49 of file bpf_jit_32.c.

Function Documentation

void bpf_jit_compile

(

struct sk_filter *

fp

)

Definition at line 835 of file bpf_jit_32.c.

void bpf_jit_free

(

struct sk_filter *

fp

)

Definition at line 910 of file bpf_jit_32.c.

Variable Documentation

int bpf_jit_enable __read_mostly

Definition at line 72 of file bpf_jit_32.c.