diff options
Diffstat (limited to 'arch/powerpc/net/bpf_jit_comp64.c')
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp64.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index 27ac2fc76702..44314ee60155 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -73,6 +73,9 @@ void bpf_jit_build_prologue(u32 *image, struct codegen_context *ctx) { int i; + if (__is_defined(PPC64_ELF_ABI_v2)) + PPC_BPF_LL(_R2, _R13, offsetof(struct paca_struct, kernel_toc)); + /* * Initialize tail_call_cnt if we do tail calls. * Otherwise, put in NOPs so that it can be skipped when we are @@ -87,8 +90,6 @@ void bpf_jit_build_prologue(u32 *image, struct codegen_context *ctx) EMIT(PPC_RAW_NOP()); } -#define BPF_TAILCALL_PROLOGUE_SIZE 8 - if (bpf_has_stack_frame(ctx)) { /* * We need a stack frame, but we don't necessarily need to @@ -217,6 +218,10 @@ static int bpf_jit_emit_tail_call(u32 *image, struct codegen_context *ctx, u32 o */ int b2p_bpf_array = b2p[BPF_REG_2]; int b2p_index = b2p[BPF_REG_3]; + int bpf_tailcall_prologue_size = 8; + + if (__is_defined(PPC64_ELF_ABI_v2)) + bpf_tailcall_prologue_size += 4; /* skip past the toc load */ /* * if (index >= array->map.max_entries) @@ -255,13 +260,8 @@ static int bpf_jit_emit_tail_call(u32 *image, struct codegen_context *ctx, u32 o /* goto *(prog->bpf_func + prologue_size); */ PPC_BPF_LL(b2p[TMP_REG_1], b2p[TMP_REG_1], offsetof(struct bpf_prog, bpf_func)); -#ifdef PPC64_ELF_ABI_v1 - /* skip past the function descriptor */ EMIT(PPC_RAW_ADDI(b2p[TMP_REG_1], b2p[TMP_REG_1], - FUNCTION_DESCR_SIZE + BPF_TAILCALL_PROLOGUE_SIZE)); -#else - EMIT(PPC_RAW_ADDI(b2p[TMP_REG_1], b2p[TMP_REG_1], BPF_TAILCALL_PROLOGUE_SIZE)); -#endif + FUNCTION_DESCR_SIZE + bpf_tailcall_prologue_size)); EMIT(PPC_RAW_MTCTR(b2p[TMP_REG_1])); /* tear down stack, restore NVRs, ... */ |