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 8334cd667bba..82bbf63f0e57 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -24,6 +24,7 @@ #define SZL sizeof(unsigned long) #define BPF_INSN_SAFETY 64 +#define BPF_PPC_TAILCALL 8 #define PLANT_INSTR(d, idx, instr) \ do { if (d) { (d)[idx] = instr; } idx++; } while (0) @@ -51,6 +52,13 @@ EMIT(PPC_INST_BRANCH_COND | (((cond) & 0x3ff) << 16) | (offset & 0xfffc)); \ } while (0) +/* When constant jump offset is known prior */ +#define PPC_BCC_CONST_SHORT(cond, offset) \ + do { \ + BUILD_BUG_ON(offset < -0x8000 || offset > 0x7fff || (offset & 0x3)); \ + EMIT(PPC_INST_BRANCH_COND | (((cond) & 0x3ff) << 16) | (offset & 0xfffc)); \ + } while (0) + /* * Sign-extended 32-bit immediate load * @@ -72,6 +80,10 @@ } } while (0) #ifdef CONFIG_PPC64 + +/* for gpr non volatile registers BPG_REG_6 to 10 */ +#define BPF_PPC_STACK_SAVE (6 * 8) + /* If dummy pass (!image), account for maximum possible instructions */ #define PPC_LI64(d, i) do { \ if (!image) \ @@ -166,6 +178,9 @@ struct codegen_context { unsigned int alt_exit_addr; u64 arena_vm_start; u64 user_vm_start; + bool is_subprog; + bool exception_boundary; + bool exception_cb; }; #define bpf_to_ppc(r) (ctx->b2p[r]) @@ -205,6 +220,7 @@ int bpf_add_extable_entry(struct bpf_prog *fp, u32 *image, u32 *fimage, int pass struct codegen_context *ctx, int insn_idx, int jmp_off, int dst_reg, u32 code); +int bpf_jit_stack_tailcallinfo_offset(struct codegen_context *ctx); #endif #endif |