From: Richard Henderson <richard.henderson@linaro.org>

We're about to rearrange the macro expansion surrounding tbflags,
and this field name will be expanded using the bit definition of
the same name, resulting in a token pasting error.

So SCTLR_B -> SCTLR__B in the 3 uses, and document it.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210419202257.161730-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu.h       | 2 +-
 target/arm/helper.c    | 2 +-
 target/arm/translate.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 193a49ec7fa..304e0a6af30 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -3423,7 +3423,7 @@ FIELD(TBFLAG_A32, VECSTRIDE, 12, 2)     /* Not cached. */
  */
 FIELD(TBFLAG_A32, XSCALE_CPAR, 12, 2)
 FIELD(TBFLAG_A32, VFPEN, 14, 1)         /* Partially cached, minus FPEXC. */
-FIELD(TBFLAG_A32, SCTLR_B, 15, 1)
+FIELD(TBFLAG_A32, SCTLR__B, 15, 1)      /* Cannot overlap with SCTLR_B */
 FIELD(TBFLAG_A32, HSTR_ACTIVE, 16, 1)
 /*
  * Indicates whether cp register reads and writes by guest code should access
diff --git a/target/arm/helper.c b/target/arm/helper.c
index d9220be7c5a..556b9d4f0ae 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -13003,7 +13003,7 @@ static uint32_t rebuild_hflags_common_32(CPUARMState *env, int fp_el,
     bool sctlr_b = arm_sctlr_b(env);
 
     if (sctlr_b) {
-        flags = FIELD_DP32(flags, TBFLAG_A32, SCTLR_B, 1);
+        flags = FIELD_DP32(flags, TBFLAG_A32, SCTLR__B, 1);
     }
     if (arm_cpu_data_is_big_endian_a32(env, sctlr_b)) {
         flags = FIELD_DP32(flags, TBFLAG_ANY, BE_DATA, 1);
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 68809e08f09..2de42529530 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -8895,7 +8895,7 @@ static void arm_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
             FIELD_EX32(tb_flags, TBFLAG_ANY, BE_DATA) ? MO_BE : MO_LE;
         dc->debug_target_el =
             FIELD_EX32(tb_flags, TBFLAG_ANY, DEBUG_TARGET_EL);
-        dc->sctlr_b = FIELD_EX32(tb_flags, TBFLAG_A32, SCTLR_B);
+        dc->sctlr_b = FIELD_EX32(tb_flags, TBFLAG_A32, SCTLR__B);
         dc->hstr_active = FIELD_EX32(tb_flags, TBFLAG_A32, HSTR_ACTIVE);
         dc->ns = FIELD_EX32(tb_flags, TBFLAG_A32, NS);
         dc->vfp_enabled = FIELD_EX32(tb_flags, TBFLAG_A32, VFPEN);
-- 
2.20.1