diff options
Diffstat (limited to 'arch/powerpc/net/bpf_jit.h')
| -rw-r--r-- | arch/powerpc/net/bpf_jit.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h index a45b8266355d..776abef4d2a0 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -116,6 +116,15 @@ static inline bool is_nearbranch(int offset) #define SEEN_STACK 0x40000000 /* uses BPF stack */ #define SEEN_TAILCALL 0x80000000 /* uses tail calls */ +#define SEEN_VREG_MASK 0x1ff80000 /* Volatile registers r3-r12 */ +#define SEEN_NVREG_MASK 0x0003ffff /* Non volatile registers r14-r31 */ + +#ifdef CONFIG_PPC64 +extern const int b2p[MAX_BPF_JIT_REG + 2]; +#else +extern const int b2p[MAX_BPF_JIT_REG + 1]; +#endif + struct codegen_context { /* * This is used to track register usage as well @@ -129,6 +138,7 @@ struct codegen_context { unsigned int seen; unsigned int idx; unsigned int stack_size; + int b2p[ARRAY_SIZE(b2p)]; }; static inline void bpf_flush_icache(void *start, void *end) @@ -147,11 +157,17 @@ static inline void bpf_set_seen_register(struct codegen_context *ctx, int i) ctx->seen |= 1 << (31 - i); } +static inline void bpf_clear_seen_register(struct codegen_context *ctx, int i) +{ + ctx->seen &= ~(1 << (31 - i)); +} + void bpf_jit_emit_func_call_rel(u32 *image, struct codegen_context *ctx, u64 func); int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, struct codegen_context *ctx, u32 *addrs, bool extra_pass); void bpf_jit_build_prologue(u32 *image, struct codegen_context *ctx); void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx); +void bpf_jit_realloc_regs(struct codegen_context *ctx); #endif |