To increase readability, use _Rx macros instead of __REG_Rx.

Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu>
---
 arch/powerpc/net/bpf_jit_comp32.c | 218 +++++++++++++++---------------
 1 file changed, 109 insertions(+), 109 deletions(-)

diff --git a/arch/powerpc/net/bpf_jit_comp32.c 
b/arch/powerpc/net/bpf_jit_comp32.c
index bbb16099e8c7..92e17fbaaabb 100644
--- a/arch/powerpc/net/bpf_jit_comp32.c
+++ b/arch/powerpc/net/bpf_jit_comp32.c
@@ -108,20 +108,20 @@ void bpf_jit_build_prologue(u32 *image, struct 
codegen_context *ctx)
        int i;
 
        /* First arg comes in as a 32 bits pointer. */
-       EMIT(PPC_RAW_MR(bpf_to_ppc(ctx, BPF_REG_1), __REG_R3));
+       EMIT(PPC_RAW_MR(bpf_to_ppc(ctx, BPF_REG_1), _R3));
        EMIT(PPC_RAW_LI(bpf_to_ppc(ctx, BPF_REG_1) - 1, 0));
-       EMIT(PPC_RAW_STWU(__REG_R1, __REG_R1, -BPF_PPC_STACKFRAME(ctx)));
+       EMIT(PPC_RAW_STWU(_R1, _R1, -BPF_PPC_STACKFRAME(ctx)));
 
        /*
         * Initialize tail_call_cnt in stack frame if we do tail calls.
         * Otherwise, put in NOPs so that it can be skipped when we are
         * invoked through a tail call.
         */
-       if (ctx->seen & SEEN_TAILCALL) {
-               EMIT(PPC_RAW_STW(bpf_to_ppc(ctx, BPF_REG_1) - 1, __REG_R1, 
bpf_jit_stack_offsetof(ctx, BPF_PPC_TC)));
-       } else {
+       if (ctx->seen & SEEN_TAILCALL)
+               EMIT(PPC_RAW_STW(bpf_to_ppc(ctx, BPF_REG_1) - 1, _R1,
+                                bpf_jit_stack_offsetof(ctx, BPF_PPC_TC)));
+       else
                EMIT(PPC_RAW_NOP());
-       }
 
 #define BPF_TAILCALL_PROLOGUE_SIZE     16
 
@@ -130,30 +130,30 @@ void bpf_jit_build_prologue(u32 *image, struct 
codegen_context *ctx)
         * save/restore LR unless we call other functions
         */
        if (ctx->seen & SEEN_FUNC)
-               EMIT(PPC_RAW_MFLR(__REG_R0));
+               EMIT(PPC_RAW_MFLR(_R0));
 
        /*
         * Back up non-volatile regs -- registers r18-r31
         */
        for (i = BPF_PPC_NVR_MIN; i <= 31; i++)
                if (bpf_is_seen_register(ctx, i))
-                       EMIT(PPC_RAW_STW(i, __REG_R1, 
bpf_jit_stack_offsetof(ctx, i)));
+                       EMIT(PPC_RAW_STW(i, _R1, bpf_jit_stack_offsetof(ctx, 
i)));
 
        /* If needed retrieve arguments 9 and 10, ie 5th 64 bits arg.*/
        if (bpf_is_seen_register(ctx, bpf_to_ppc(ctx, BPF_REG_5))) {
-               EMIT(PPC_RAW_LWZ(bpf_to_ppc(ctx, BPF_REG_5) - 1, __REG_R1, 
BPF_PPC_STACKFRAME(ctx)) + 8);
-               EMIT(PPC_RAW_LWZ(bpf_to_ppc(ctx, BPF_REG_5), __REG_R1, 
BPF_PPC_STACKFRAME(ctx)) + 12);
+               EMIT(PPC_RAW_LWZ(bpf_to_ppc(ctx, BPF_REG_5) - 1, _R1, 
BPF_PPC_STACKFRAME(ctx)) + 8);
+               EMIT(PPC_RAW_LWZ(bpf_to_ppc(ctx, BPF_REG_5), _R1, 
BPF_PPC_STACKFRAME(ctx)) + 12);
        }
 
        /* Setup frame pointer to point to the bpf stack area */
        if (bpf_is_seen_register(ctx, bpf_to_ppc(ctx, BPF_REG_FP))) {
                EMIT(PPC_RAW_LI(bpf_to_ppc(ctx, BPF_REG_FP) - 1, 0));
-               EMIT(PPC_RAW_ADDI(bpf_to_ppc(ctx, BPF_REG_FP), __REG_R1,
+               EMIT(PPC_RAW_ADDI(bpf_to_ppc(ctx, BPF_REG_FP), _R1,
                                  STACK_FRAME_MIN_SIZE + ctx->stack_size));
        }
 
        if (ctx->seen & SEEN_FUNC)
-               EMIT(PPC_RAW_STW(__REG_R0, __REG_R1, BPF_PPC_STACKFRAME(ctx) + 
PPC_LR_STKOFF));
+               EMIT(PPC_RAW_STW(_R0, _R1, BPF_PPC_STACKFRAME(ctx) + 
PPC_LR_STKOFF));
 }
 
 static void bpf_jit_emit_common_epilogue(u32 *image, struct codegen_context 
*ctx)
@@ -163,24 +163,24 @@ static void bpf_jit_emit_common_epilogue(u32 *image, 
struct codegen_context *ctx
        /* Restore NVRs */
        for (i = BPF_PPC_NVR_MIN; i <= 31; i++)
                if (bpf_is_seen_register(ctx, i))
-                       EMIT(PPC_RAW_LWZ(i, __REG_R1, 
bpf_jit_stack_offsetof(ctx, i)));
+                       EMIT(PPC_RAW_LWZ(i, _R1, bpf_jit_stack_offsetof(ctx, 
i)));
 }
 
 void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx)
 {
-       EMIT(PPC_RAW_MR(__REG_R3, bpf_to_ppc(ctx, BPF_REG_0)));
+       EMIT(PPC_RAW_MR(_R3, bpf_to_ppc(ctx, BPF_REG_0)));
 
        bpf_jit_emit_common_epilogue(image, ctx);
 
        /* Tear down our stack frame */
 
        if (ctx->seen & SEEN_FUNC)
-               EMIT(PPC_RAW_LWZ(__REG_R0, __REG_R1, BPF_PPC_STACKFRAME(ctx) + 
PPC_LR_STKOFF));
+               EMIT(PPC_RAW_LWZ(_R0, _R1, BPF_PPC_STACKFRAME(ctx) + 
PPC_LR_STKOFF));
 
-       EMIT(PPC_RAW_ADDI(__REG_R1, __REG_R1, BPF_PPC_STACKFRAME(ctx)));
+       EMIT(PPC_RAW_ADDI(_R1, _R1, BPF_PPC_STACKFRAME(ctx)));
 
        if (ctx->seen & SEEN_FUNC)
-               EMIT(PPC_RAW_MTLR(__REG_R0));
+               EMIT(PPC_RAW_MTLR(_R0));
 
        EMIT(PPC_RAW_BLR());
 }
@@ -193,9 +193,9 @@ void bpf_jit_emit_func_call_rel(u32 *image, struct 
codegen_context *ctx, u64 fun
                PPC_BL_ABS(func);
        } else {
                /* Load function address into r0 */
-               EMIT(PPC_RAW_LIS(__REG_R0, IMM_H(func)));
-               EMIT(PPC_RAW_ORI(__REG_R0, __REG_R0, IMM_L(func)));
-               EMIT(PPC_RAW_MTLR(__REG_R0));
+               EMIT(PPC_RAW_LIS(_R0, IMM_H(func)));
+               EMIT(PPC_RAW_ORI(_R0, _R0, IMM_L(func)));
+               EMIT(PPC_RAW_MTLR(_R0));
                EMIT(PPC_RAW_BLRL());
        }
 }
@@ -215,47 +215,47 @@ static void bpf_jit_emit_tail_call(u32 *image, struct 
codegen_context *ctx, u32
         * if (index >= array->map.max_entries)
         *   goto out;
         */
-       EMIT(PPC_RAW_LWZ(__REG_R0, b2p_bpf_array, offsetof(struct bpf_array, 
map.max_entries)));
-       EMIT(PPC_RAW_CMPLW(b2p_index, __REG_R0));
-       EMIT(PPC_RAW_LWZ(__REG_R0, __REG_R1, bpf_jit_stack_offsetof(ctx, 
BPF_PPC_TC)));
+       EMIT(PPC_RAW_LWZ(_R0, b2p_bpf_array, offsetof(struct bpf_array, 
map.max_entries)));
+       EMIT(PPC_RAW_CMPLW(b2p_index, _R0));
+       EMIT(PPC_RAW_LWZ(_R0, _R1, bpf_jit_stack_offsetof(ctx, BPF_PPC_TC)));
        PPC_BCC(COND_GE, out);
 
        /*
         * if (tail_call_cnt > MAX_TAIL_CALL_CNT)
         *   goto out;
         */
-       EMIT(PPC_RAW_CMPLWI(__REG_R0, MAX_TAIL_CALL_CNT));
+       EMIT(PPC_RAW_CMPLWI(_R0, MAX_TAIL_CALL_CNT));
        /* tail_call_cnt++; */
-       EMIT(PPC_RAW_ADDIC(__REG_R0, __REG_R0, 1));
+       EMIT(PPC_RAW_ADDIC(_R0, _R0, 1));
        PPC_BCC(COND_GT, out);
 
        /* prog = array->ptrs[index]; */
-       EMIT(PPC_RAW_RLWINM(__REG_R3, b2p_index, 2, 0, 29));
-       EMIT(PPC_RAW_ADD(__REG_R3, __REG_R3, b2p_bpf_array));
-       EMIT(PPC_RAW_LWZ(__REG_R3, __REG_R3, offsetof(struct bpf_array, ptrs)));
-       EMIT(PPC_RAW_STW(__REG_R0, __REG_R1, bpf_jit_stack_offsetof(ctx, 
BPF_PPC_TC)));
+       EMIT(PPC_RAW_RLWINM(_R3, b2p_index, 2, 0, 29));
+       EMIT(PPC_RAW_ADD(_R3, _R3, b2p_bpf_array));
+       EMIT(PPC_RAW_LWZ(_R3, _R3, offsetof(struct bpf_array, ptrs)));
+       EMIT(PPC_RAW_STW(_R0, _R1, bpf_jit_stack_offsetof(ctx, BPF_PPC_TC)));
 
        /*
         * if (prog == NULL)
         *   goto out;
         */
-       EMIT(PPC_RAW_CMPLWI(__REG_R3, 0));
+       EMIT(PPC_RAW_CMPLWI(_R3, 0));
        PPC_BCC(COND_EQ, out);
 
        /* goto *(prog->bpf_func + prologue_size); */
-       EMIT(PPC_RAW_LWZ(__REG_R3, __REG_R3, offsetof(struct bpf_prog, 
bpf_func)));
+       EMIT(PPC_RAW_LWZ(_R3, _R3, offsetof(struct bpf_prog, bpf_func)));
 
        if (ctx->seen & SEEN_FUNC)
-               EMIT(PPC_RAW_LWZ(__REG_R0, __REG_R1, BPF_PPC_STACKFRAME(ctx) + 
PPC_LR_STKOFF));
+               EMIT(PPC_RAW_LWZ(_R0, _R1, BPF_PPC_STACKFRAME(ctx) + 
PPC_LR_STKOFF));
 
-       EMIT(PPC_RAW_ADDIC(__REG_R3, __REG_R3, BPF_TAILCALL_PROLOGUE_SIZE));
+       EMIT(PPC_RAW_ADDIC(_R3, _R3, BPF_TAILCALL_PROLOGUE_SIZE));
 
        if (ctx->seen & SEEN_FUNC)
-               EMIT(PPC_RAW_MTLR(__REG_R0));
+               EMIT(PPC_RAW_MTLR(_R0));
 
-       EMIT(PPC_RAW_MTCTR(__REG_R3));
+       EMIT(PPC_RAW_MTCTR(_R3));
 
-       EMIT(PPC_RAW_MR(__REG_R3, bpf_to_ppc(ctx, BPF_REG_1)));
+       EMIT(PPC_RAW_MR(_R3, bpf_to_ppc(ctx, BPF_REG_1)));
 
        /* tear restore NVRs, ... */
        bpf_jit_emit_common_epilogue(image, ctx);
@@ -352,8 +352,8 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        if (imm >= -32768 && imm < 32768) {
                                EMIT(PPC_RAW_ADDIC(dst_reg, dst_reg, imm));
                        } else {
-                               PPC_LI32(__REG_R0, imm);
-                               EMIT(PPC_RAW_ADDC(dst_reg, dst_reg, __REG_R0));
+                               PPC_LI32(_R0, imm);
+                               EMIT(PPC_RAW_ADDC(dst_reg, dst_reg, _R0));
                        }
                        if (imm >= 0)
                                EMIT(PPC_RAW_ADDZE(dst_reg_h, dst_reg_h));
@@ -362,11 +362,11 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        break;
                case BPF_ALU64 | BPF_MUL | BPF_X: /* dst *= src */
                        bpf_set_seen_register(ctx, tmp_reg);
-                       EMIT(PPC_RAW_MULW(__REG_R0, dst_reg, src_reg_h));
+                       EMIT(PPC_RAW_MULW(_R0, dst_reg, src_reg_h));
                        EMIT(PPC_RAW_MULW(dst_reg_h, dst_reg_h, src_reg));
                        EMIT(PPC_RAW_MULHWU(tmp_reg, dst_reg, src_reg));
                        EMIT(PPC_RAW_MULW(dst_reg, dst_reg, src_reg));
-                       EMIT(PPC_RAW_ADD(dst_reg_h, dst_reg_h, __REG_R0));
+                       EMIT(PPC_RAW_ADD(dst_reg_h, dst_reg_h, _R0));
                        EMIT(PPC_RAW_ADD(dst_reg_h, dst_reg_h, tmp_reg));
                        break;
                case BPF_ALU | BPF_MUL | BPF_X: /* (u32) dst *= (u32) src */
@@ -376,8 +376,8 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        if (imm >= -32768 && imm < 32768) {
                                EMIT(PPC_RAW_MULI(dst_reg, dst_reg, imm));
                        } else {
-                               PPC_LI32(__REG_R0, imm);
-                               EMIT(PPC_RAW_MULW(dst_reg, dst_reg, __REG_R0));
+                               PPC_LI32(_R0, imm);
+                               EMIT(PPC_RAW_MULW(dst_reg, dst_reg, _R0));
                        }
                        break;
                case BPF_ALU64 | BPF_MUL | BPF_K: /* dst *= imm */
@@ -398,17 +398,17 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        EMIT(PPC_RAW_MULW(dst_reg_h, dst_reg_h, tmp_reg));
                        if (imm < 0)
                                EMIT(PPC_RAW_SUB(dst_reg_h, dst_reg_h, 
dst_reg));
-                       EMIT(PPC_RAW_MULHWU(__REG_R0, dst_reg, tmp_reg));
+                       EMIT(PPC_RAW_MULHWU(_R0, dst_reg, tmp_reg));
                        EMIT(PPC_RAW_MULW(dst_reg, dst_reg, tmp_reg));
-                       EMIT(PPC_RAW_ADD(dst_reg_h, dst_reg_h, __REG_R0));
+                       EMIT(PPC_RAW_ADD(dst_reg_h, dst_reg_h, _R0));
                        break;
                case BPF_ALU | BPF_DIV | BPF_X: /* (u32) dst /= (u32) src */
                        EMIT(PPC_RAW_DIVWU(dst_reg, dst_reg, src_reg));
                        break;
                case BPF_ALU | BPF_MOD | BPF_X: /* (u32) dst %= (u32) src */
-                       EMIT(PPC_RAW_DIVWU(__REG_R0, dst_reg, src_reg));
-                       EMIT(PPC_RAW_MULW(__REG_R0, src_reg, __REG_R0));
-                       EMIT(PPC_RAW_SUB(dst_reg, dst_reg, __REG_R0));
+                       EMIT(PPC_RAW_DIVWU(_R0, dst_reg, src_reg));
+                       EMIT(PPC_RAW_MULW(_R0, src_reg, _R0));
+                       EMIT(PPC_RAW_SUB(dst_reg, dst_reg, _R0));
                        break;
                case BPF_ALU64 | BPF_DIV | BPF_X: /* dst /= src */
                        return -EOPNOTSUPP;
@@ -420,8 +420,8 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        if (imm == 1)
                                break;
 
-                       PPC_LI32(__REG_R0, imm);
-                       EMIT(PPC_RAW_DIVWU(dst_reg, dst_reg, __REG_R0));
+                       PPC_LI32(_R0, imm);
+                       EMIT(PPC_RAW_DIVWU(dst_reg, dst_reg, _R0));
                        break;
                case BPF_ALU | BPF_MOD | BPF_K: /* (u32) dst %= (u32) imm */
                        if (!imm)
@@ -430,9 +430,9 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        if (!is_power_of_2((u32)imm)) {
                                bpf_set_seen_register(ctx, tmp_reg);
                                PPC_LI32(tmp_reg, imm);
-                               EMIT(PPC_RAW_DIVWU(__REG_R0, dst_reg, tmp_reg));
-                               EMIT(PPC_RAW_MULW(__REG_R0, tmp_reg, __REG_R0));
-                               EMIT(PPC_RAW_SUB(dst_reg, dst_reg, __REG_R0));
+                               EMIT(PPC_RAW_DIVWU(_R0, dst_reg, tmp_reg));
+                               EMIT(PPC_RAW_MULW(_R0, tmp_reg, _R0));
+                               EMIT(PPC_RAW_SUB(dst_reg, dst_reg, _R0));
                                break;
                        }
                        if (imm == 1)
@@ -503,8 +503,8 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                EMIT(PPC_RAW_RLWINM(dst_reg, dst_reg, 0,
                                                    32 - fls(imm), 32 - 
ffs(imm)));
                        } else {
-                               PPC_LI32(__REG_R0, imm);
-                               EMIT(PPC_RAW_AND(dst_reg, dst_reg, __REG_R0));
+                               PPC_LI32(_R0, imm);
+                               EMIT(PPC_RAW_AND(dst_reg, dst_reg, _R0));
                        }
                        break;
                case BPF_ALU64 | BPF_OR | BPF_X: /* dst = dst | src */
@@ -555,12 +555,12 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        break;
                case BPF_ALU64 | BPF_LSH | BPF_X: /* dst <<= src; */
                        bpf_set_seen_register(ctx, tmp_reg);
-                       EMIT(PPC_RAW_SUBFIC(__REG_R0, src_reg, 32));
+                       EMIT(PPC_RAW_SUBFIC(_R0, src_reg, 32));
                        EMIT(PPC_RAW_SLW(dst_reg_h, dst_reg_h, src_reg));
                        EMIT(PPC_RAW_ADDI(tmp_reg, src_reg, 32));
-                       EMIT(PPC_RAW_SRW(__REG_R0, dst_reg, __REG_R0));
+                       EMIT(PPC_RAW_SRW(_R0, dst_reg, _R0));
                        EMIT(PPC_RAW_SLW(tmp_reg, dst_reg, tmp_reg));
-                       EMIT(PPC_RAW_OR(dst_reg_h, dst_reg_h, __REG_R0));
+                       EMIT(PPC_RAW_OR(dst_reg_h, dst_reg_h, _R0));
                        EMIT(PPC_RAW_SLW(dst_reg, dst_reg, src_reg));
                        EMIT(PPC_RAW_OR(dst_reg_h, dst_reg_h, tmp_reg));
                        break;
@@ -591,12 +591,12 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        break;
                case BPF_ALU64 | BPF_RSH | BPF_X: /* dst >>= src */
                        bpf_set_seen_register(ctx, tmp_reg);
-                       EMIT(PPC_RAW_SUBFIC(__REG_R0, src_reg, 32));
+                       EMIT(PPC_RAW_SUBFIC(_R0, src_reg, 32));
                        EMIT(PPC_RAW_SRW(dst_reg, dst_reg, src_reg));
                        EMIT(PPC_RAW_ADDI(tmp_reg, src_reg, 32));
-                       EMIT(PPC_RAW_SLW(__REG_R0, dst_reg_h, __REG_R0));
+                       EMIT(PPC_RAW_SLW(_R0, dst_reg_h, _R0));
                        EMIT(PPC_RAW_SRW(tmp_reg, dst_reg_h, tmp_reg));
-                       EMIT(PPC_RAW_OR(dst_reg, dst_reg, __REG_R0));
+                       EMIT(PPC_RAW_OR(dst_reg, dst_reg, _R0));
                        EMIT(PPC_RAW_SRW(dst_reg_h, dst_reg_h, src_reg));
                        EMIT(PPC_RAW_OR(dst_reg, dst_reg, tmp_reg));
                        break;
@@ -627,15 +627,15 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        break;
                case BPF_ALU64 | BPF_ARSH | BPF_X: /* (s64) dst >>= src */
                        bpf_set_seen_register(ctx, tmp_reg);
-                       EMIT(PPC_RAW_SUBFIC(__REG_R0, src_reg, 32));
+                       EMIT(PPC_RAW_SUBFIC(_R0, src_reg, 32));
                        EMIT(PPC_RAW_SRW(dst_reg, dst_reg, src_reg));
-                       EMIT(PPC_RAW_SLW(__REG_R0, dst_reg_h, __REG_R0));
+                       EMIT(PPC_RAW_SLW(_R0, dst_reg_h, _R0));
                        EMIT(PPC_RAW_ADDI(tmp_reg, src_reg, 32));
-                       EMIT(PPC_RAW_OR(dst_reg, dst_reg, __REG_R0));
-                       EMIT(PPC_RAW_RLWINM(__REG_R0, tmp_reg, 0, 26, 26));
+                       EMIT(PPC_RAW_OR(dst_reg, dst_reg, _R0));
+                       EMIT(PPC_RAW_RLWINM(_R0, tmp_reg, 0, 26, 26));
                        EMIT(PPC_RAW_SRAW(tmp_reg, dst_reg_h, tmp_reg));
                        EMIT(PPC_RAW_SRAW(dst_reg_h, dst_reg_h, src_reg));
-                       EMIT(PPC_RAW_SLW(tmp_reg, tmp_reg, __REG_R0));
+                       EMIT(PPC_RAW_SLW(tmp_reg, tmp_reg, _R0));
                        EMIT(PPC_RAW_OR(dst_reg, dst_reg, tmp_reg));
                        break;
                case BPF_ALU | BPF_ARSH | BPF_K: /* (s32) dst >>= imm */
@@ -702,24 +702,24 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                 * 2 bytes are already in their final position
                                 * -- byte 2 and 4 (of bytes 1, 2, 3 and 4)
                                 */
-                               EMIT(PPC_RAW_RLWINM(__REG_R0, dst_reg, 8, 0, 
31));
+                               EMIT(PPC_RAW_RLWINM(_R0, dst_reg, 8, 0, 31));
                                /* Rotate 24 bits and insert byte 1 */
-                               EMIT(PPC_RAW_RLWIMI(__REG_R0, dst_reg, 24, 0, 
7));
+                               EMIT(PPC_RAW_RLWIMI(_R0, dst_reg, 24, 0, 7));
                                /* Rotate 24 bits and insert byte 3 */
-                               EMIT(PPC_RAW_RLWIMI(__REG_R0, dst_reg, 24, 16, 
23));
-                               EMIT(PPC_RAW_MR(dst_reg, __REG_R0));
+                               EMIT(PPC_RAW_RLWIMI(_R0, dst_reg, 24, 16, 23));
+                               EMIT(PPC_RAW_MR(dst_reg, _R0));
                                break;
                        case 64:
                                bpf_set_seen_register(ctx, tmp_reg);
                                EMIT(PPC_RAW_RLWINM(tmp_reg, dst_reg, 8, 0, 
31));
-                               EMIT(PPC_RAW_RLWINM(__REG_R0, dst_reg_h, 8, 0, 
31));
+                               EMIT(PPC_RAW_RLWINM(_R0, dst_reg_h, 8, 0, 31));
                                /* Rotate 24 bits and insert byte 1 */
                                EMIT(PPC_RAW_RLWIMI(tmp_reg, dst_reg, 24, 0, 
7));
-                               EMIT(PPC_RAW_RLWIMI(__REG_R0, dst_reg_h, 24, 0, 
7));
+                               EMIT(PPC_RAW_RLWIMI(_R0, dst_reg_h, 24, 0, 7));
                                /* Rotate 24 bits and insert byte 3 */
                                EMIT(PPC_RAW_RLWIMI(tmp_reg, dst_reg, 24, 16, 
23));
-                               EMIT(PPC_RAW_RLWIMI(__REG_R0, dst_reg_h, 24, 
16, 23));
-                               EMIT(PPC_RAW_MR(dst_reg, __REG_R0));
+                               EMIT(PPC_RAW_RLWIMI(_R0, dst_reg_h, 24, 16, 
23));
+                               EMIT(PPC_RAW_MR(dst_reg, _R0));
                                EMIT(PPC_RAW_MR(dst_reg_h, tmp_reg));
                                break;
                        }
@@ -744,32 +744,32 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        EMIT(PPC_RAW_STB(src_reg, dst_reg, off));
                        break;
                case BPF_ST | BPF_MEM | BPF_B: /* *(u8 *)(dst + off) = imm */
-                       PPC_LI32(__REG_R0, imm);
-                       EMIT(PPC_RAW_STB(__REG_R0, dst_reg, off));
+                       PPC_LI32(_R0, imm);
+                       EMIT(PPC_RAW_STB(_R0, dst_reg, off));
                        break;
                case BPF_STX | BPF_MEM | BPF_H: /* (u16 *)(dst + off) = src */
                        EMIT(PPC_RAW_STH(src_reg, dst_reg, off));
                        break;
                case BPF_ST | BPF_MEM | BPF_H: /* (u16 *)(dst + off) = imm */
-                       PPC_LI32(__REG_R0, imm);
-                       EMIT(PPC_RAW_STH(__REG_R0, dst_reg, off));
+                       PPC_LI32(_R0, imm);
+                       EMIT(PPC_RAW_STH(_R0, dst_reg, off));
                        break;
                case BPF_STX | BPF_MEM | BPF_W: /* *(u32 *)(dst + off) = src */
                        EMIT(PPC_RAW_STW(src_reg, dst_reg, off));
                        break;
                case BPF_ST | BPF_MEM | BPF_W: /* *(u32 *)(dst + off) = imm */
-                       PPC_LI32(__REG_R0, imm);
-                       EMIT(PPC_RAW_STW(__REG_R0, dst_reg, off));
+                       PPC_LI32(_R0, imm);
+                       EMIT(PPC_RAW_STW(_R0, dst_reg, off));
                        break;
                case BPF_STX | BPF_MEM | BPF_DW: /* (u64 *)(dst + off) = src */
                        EMIT(PPC_RAW_STW(src_reg_h, dst_reg, off));
                        EMIT(PPC_RAW_STW(src_reg, dst_reg, off + 4));
                        break;
                case BPF_ST | BPF_MEM | BPF_DW: /* *(u64 *)(dst + off) = imm */
-                       PPC_LI32(__REG_R0, imm);
-                       EMIT(PPC_RAW_STW(__REG_R0, dst_reg, off + 4));
-                       PPC_EX32(__REG_R0, imm);
-                       EMIT(PPC_RAW_STW(__REG_R0, dst_reg, off));
+                       PPC_LI32(_R0, imm);
+                       EMIT(PPC_RAW_STW(_R0, dst_reg, off + 4));
+                       PPC_EX32(_R0, imm);
+                       EMIT(PPC_RAW_STW(_R0, dst_reg, off));
                        break;
 
                /*
@@ -780,11 +780,11 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                        /* Get offset into TMP_REG */
                        EMIT(PPC_RAW_LI(tmp_reg, off));
                        /* load value from memory into r0 */
-                       EMIT(PPC_RAW_LWARX(__REG_R0, tmp_reg, dst_reg, 0));
+                       EMIT(PPC_RAW_LWARX(_R0, tmp_reg, dst_reg, 0));
                        /* add value from src_reg into this */
-                       EMIT(PPC_RAW_ADD(__REG_R0, __REG_R0, src_reg));
+                       EMIT(PPC_RAW_ADD(_R0, _R0, src_reg));
                        /* store result back */
-                       EMIT(PPC_RAW_STWCX(__REG_R0, tmp_reg, dst_reg));
+                       EMIT(PPC_RAW_STWCX(_R0, tmp_reg, dst_reg));
                        /* we're done if this succeeded */
                        PPC_BCC_SHORT(COND_NE, (ctx->idx - 3) * 4);
                        break;
@@ -852,14 +852,14 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                return ret;
 
                        if (bpf_is_seen_register(ctx, bpf_to_ppc(ctx, 
BPF_REG_5))) {
-                               EMIT(PPC_RAW_STW(bpf_to_ppc(ctx, BPF_REG_5) - 
1, __REG_R1, 8));
-                               EMIT(PPC_RAW_STW(bpf_to_ppc(ctx, BPF_REG_5), 
__REG_R1, 12));
+                               EMIT(PPC_RAW_STW(bpf_to_ppc(ctx, BPF_REG_5) - 
1, _R1, 8));
+                               EMIT(PPC_RAW_STW(bpf_to_ppc(ctx, BPF_REG_5), 
_R1, 12));
                        }
 
                        bpf_jit_emit_func_call_rel(image, ctx, func_addr);
 
-                       EMIT(PPC_RAW_MR(bpf_to_ppc(ctx, BPF_REG_0) - 1, 
__REG_R3));
-                       EMIT(PPC_RAW_MR(bpf_to_ppc(ctx, BPF_REG_0), __REG_R4));
+                       EMIT(PPC_RAW_MR(bpf_to_ppc(ctx, BPF_REG_0) - 1, _R3));
+                       EMIT(PPC_RAW_MR(bpf_to_ppc(ctx, BPF_REG_0), _R4));
                        break;
 
                /*
@@ -967,12 +967,12 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                EMIT(PPC_RAW_CMPW(dst_reg, src_reg));
                                break;
                        case BPF_JMP | BPF_JSET | BPF_X:
-                               EMIT(PPC_RAW_AND_DOT(__REG_R0, dst_reg_h, 
src_reg_h));
+                               EMIT(PPC_RAW_AND_DOT(_R0, dst_reg_h, 
src_reg_h));
                                PPC_BCC_SHORT(COND_NE, (ctx->idx + 2) * 4);
-                               EMIT(PPC_RAW_AND_DOT(__REG_R0, dst_reg, 
src_reg));
+                               EMIT(PPC_RAW_AND_DOT(_R0, dst_reg, src_reg));
                                break;
                        case BPF_JMP32 | BPF_JSET | BPF_X: {
-                               EMIT(PPC_RAW_AND_DOT(__REG_R0, dst_reg, 
src_reg));
+                               EMIT(PPC_RAW_AND_DOT(_R0, dst_reg, src_reg));
                                break;
                        case BPF_JMP | BPF_JNE | BPF_K:
                        case BPF_JMP | BPF_JEQ | BPF_K:
@@ -990,11 +990,11 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                        EMIT(PPC_RAW_CMPLWI(dst_reg, imm));
                                } else {
                                        /* sign-extending load ... but unsigned 
comparison */
-                                       PPC_EX32(__REG_R0, imm);
-                                       EMIT(PPC_RAW_CMPLW(dst_reg_h, 
__REG_R0));
-                                       PPC_LI32(__REG_R0, imm);
+                                       PPC_EX32(_R0, imm);
+                                       EMIT(PPC_RAW_CMPLW(dst_reg_h, _R0));
+                                       PPC_LI32(_R0, imm);
                                        PPC_BCC_SHORT(COND_NE, (ctx->idx + 2) * 
4);
-                                       EMIT(PPC_RAW_CMPLW(dst_reg, __REG_R0));
+                                       EMIT(PPC_RAW_CMPLW(dst_reg, _R0));
                                }
                                break;
                        case BPF_JMP32 | BPF_JNE | BPF_K:
@@ -1006,8 +1006,8 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                if (imm >= 0 && imm < 65536) {
                                        EMIT(PPC_RAW_CMPLWI(dst_reg, imm));
                                } else {
-                                       PPC_LI32(__REG_R0, imm);
-                                       EMIT(PPC_RAW_CMPLW(dst_reg, __REG_R0));
+                                       PPC_LI32(_R0, imm);
+                                       EMIT(PPC_RAW_CMPLW(dst_reg, _R0));
                                }
                                break;
                        }
@@ -1022,9 +1022,9 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                } else {
                                        /* sign-extending load */
                                        EMIT(PPC_RAW_CMPWI(dst_reg_h, imm < 0 ? 
-1 : 0));
-                                       PPC_LI32(__REG_R0, imm);
+                                       PPC_LI32(_R0, imm);
                                        PPC_BCC_SHORT(COND_NE, (ctx->idx + 2) * 
4);
-                                       EMIT(PPC_RAW_CMPLW(dst_reg, __REG_R0));
+                                       EMIT(PPC_RAW_CMPLW(dst_reg, _R0));
                                }
                                break;
                        case BPF_JMP32 | BPF_JSGT | BPF_K:
@@ -1039,32 +1039,32 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, 
struct codegen_context *
                                        EMIT(PPC_RAW_CMPWI(dst_reg, imm));
                                } else {
                                        /* sign-extending load */
-                                       PPC_LI32(__REG_R0, imm);
-                                       EMIT(PPC_RAW_CMPW(dst_reg, __REG_R0));
+                                       PPC_LI32(_R0, imm);
+                                       EMIT(PPC_RAW_CMPW(dst_reg, _R0));
                                }
                                break;
                        case BPF_JMP | BPF_JSET | BPF_K:
                                /* andi does not sign-extend the immediate */
                                if (imm >= 0 && imm < 32768) {
                                        /* PPC_ANDI is _only/always_ dot-form */
-                                       EMIT(PPC_RAW_ANDI(__REG_R0, dst_reg, 
imm));
+                                       EMIT(PPC_RAW_ANDI(_R0, dst_reg, imm));
                                } else {
-                                       PPC_LI32(__REG_R0, imm);
+                                       PPC_LI32(_R0, imm);
                                        if (imm < 0) {
                                                EMIT(PPC_RAW_CMPWI(dst_reg_h, 
0));
                                                PPC_BCC_SHORT(COND_NE, 
(ctx->idx + 2) * 4);
                                        }
-                                       EMIT(PPC_RAW_AND_DOT(__REG_R0, dst_reg, 
__REG_R0));
+                                       EMIT(PPC_RAW_AND_DOT(_R0, dst_reg, 
_R0));
                                }
                                break;
                        case BPF_JMP32 | BPF_JSET | BPF_K:
                                /* andi does not sign-extend the immediate */
                                if (imm >= -32768 && imm < 32768) {
                                        /* PPC_ANDI is _only/always_ dot-form */
-                                       EMIT(PPC_RAW_ANDI(__REG_R0, dst_reg, 
imm));
+                                       EMIT(PPC_RAW_ANDI(_R0, dst_reg, imm));
                                } else {
-                                       PPC_LI32(__REG_R0, imm);
-                                       EMIT(PPC_RAW_AND_DOT(__REG_R0, dst_reg, 
__REG_R0));
+                                       PPC_LI32(_R0, imm);
+                                       EMIT(PPC_RAW_AND_DOT(_R0, dst_reg, 
_R0));
                                }
                                break;
                        }
-- 
2.25.0

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