[Qemu-devel] [PATCH 09/14] ppc: introduce ppc_get_crf and ppc_set_crf

[Paolo Bonzini <pbonzini@redhat.com>]

These two functions will group together four CR bits into a single
value, once we change the representation of condition registers.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 linux-user/main.c        |  2 +-
 target-ppc/cpu.h         | 10 ++++++++++
 target-ppc/excp_helper.c |  2 +-
 target-ppc/fpu_helper.c  |  6 ++++--
 target-ppc/int_helper.c  | 14 +++++++-------
 target-ppc/translate.c   | 13 +++++++------
 6 files changed, 30 insertions(+), 17 deletions(-)

diff --git a/linux-user/main.c b/linux-user/main.c
index 472a16d..152c031 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -1550,7 +1550,7 @@ static int do_store_exclusive(CPUPPCState *env)
                 }
             }
         }
-        env->crf[0] = (stored << 1) | xer_so;
+        ppc_set_crf(env, 0, (stored << 1) | xer_so);
         env->reserve_addr = (target_ulong)-1;
     }
     if (!segv) {
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 0c0196d..91eac17 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -1217,6 +1217,16 @@ static inline void ppc_set_cr(CPUPPCState *env, uint32_t cr)
     }
 }
 
+static inline uint32_t ppc_get_crf(const CPUPPCState *env, int i)
+{
+    return env->crf[i];
+}
+
+static inline void ppc_set_crf(CPUPPCState *env, int i, uint32_t val)
+{
+    env->crf[i] = val;
+}
+
 static inline uint64_t ppc_dump_gpr(CPUPPCState *env, int gprn)
 {
     uint64_t gprv;
diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c
index 96ad9d7..08637c1 100644
--- a/target-ppc/excp_helper.c
+++ b/target-ppc/excp_helper.c
@@ -504,7 +504,7 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
                          env->error_code);
             }
 #endif
-            msr |= env->crf[0] << 28;
+            msr |= ppc_get_crf(env, 0) << 28;
             msr |= env->error_code; /* key, D/I, S/L bits */
             /* Set way using a LRU mechanism */
             msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c
index b4e6d72..8cf321b 100644
--- a/target-ppc/fpu_helper.c
+++ b/target-ppc/fpu_helper.c
@@ -1099,7 +1099,8 @@ void helper_fcmpu(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
 
     env->fpscr &= ~(0x0F << FPSCR_FPRF);
     env->fpscr |= (0x01 << FPSCR_FPRF) << fpcc;
-    env->crf[crfD] = (1 << fpcc);
+    ppc_set_crf(env, crfD, 1 << fpcc);
+
     if (unlikely(fpcc == CRF_SO
                  && (float64_is_signaling_nan(farg1.d) ||
                      float64_is_signaling_nan(farg2.d)))) {
@@ -1130,7 +1131,8 @@ void helper_fcmpo(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
 
     env->fpscr &= ~(0x0F << FPSCR_FPRF);
     env->fpscr |= (0x01 << FPSCR_FPRF) << fpcc;
-    env->crf[crfD] = (1 << fpcc);
+    ppc_set_crf(env, crfD, 1 << fpcc);
+
     if (unlikely(fpcc == CRF_SO)) {
         if (float64_is_signaling_nan(farg1.d) ||
             float64_is_signaling_nan(farg2.d)) {
diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c
index 54e8998..b76a895 100644
--- a/target-ppc/int_helper.c
+++ b/target-ppc/int_helper.c
@@ -294,7 +294,7 @@ void helper_mtocrf(CPUPPCState *env, target_ulong cr, uint32_t mask)
     int i;
     for (i = ARRAY_SIZE(env->crf); --i >= 0; ) {
         if (mask & 1) {
-            env->crf[i] = cr & 0x0F;
+            ppc_set_crf(env, i, cr & 0x0F);
         }
         cr >>= 4;
         mask >>= 1;
@@ -657,7 +657,7 @@ VCF(sx, int32_to_float32, s32)
             none |= result;                                             \
         }                                                               \
         if (record) {                                                   \
-            env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1);       \
+            ppc_set_crf(env, 6, ((all != 0) << 3) | ((none == 0) << 1)); \
         }                                                               \
     }
 #define VCMP(suffix, compare, element)          \
@@ -703,7 +703,7 @@ VCMP(gtsd, >, s64)
             none |= result;                                             \
         }                                                               \
         if (record) {                                                   \
-            env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1);       \
+            ppc_set_crf(env, 6, ((all != 0) << 3) | ((none == 0) << 1)); \
         }                                                               \
     }
 #define VCMPFP(suffix, compare, order)          \
@@ -737,7 +737,7 @@ static inline void vcmpbfp_internal(CPUPPCState *env, ppc_avr_t *r,
         }
     }
     if (record) {
-        env->crf[6] = (all_in == 0) << 1;
+        ppc_set_crf(env, 6, (all_in == 0) << 1);
     }
 }
 
@@ -2558,7 +2558,7 @@ target_ulong helper_dlmzb(CPUPPCState *env, target_ulong high,
     for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
         if ((high & mask) == 0) {
             if (update_Rc) {
-                env->crf[0] = 0x4;
+                ppc_set_crf(env, 0, 0x4);
             }
             goto done;
         }
@@ -2567,7 +2567,7 @@ target_ulong helper_dlmzb(CPUPPCState *env, target_ulong high,
     for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
         if ((low & mask) == 0) {
             if (update_Rc) {
-                env->crf[0] = 0x8;
+                ppc_set_crf(env, 0, 0x8);
             }
             goto done;
         }
@@ -2575,7 +2575,7 @@ target_ulong helper_dlmzb(CPUPPCState *env, target_ulong high,
     }
     i = 8;
     if (update_Rc) {
-        env->crf[0] = 0x2;
+        ppc_set_crf(env, 0, 0x2);
     }
  done:
     env->xer = (env->xer & ~0x7F) | i;
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 52062a8..9ff8763 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -11102,18 +11102,19 @@ void ppc_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
             cpu_fprintf(f, "\n");
     }
     cpu_fprintf(f, "CR ");
-    for (i = 0; i < 8; i++)
-        cpu_fprintf(f, "%01x", env->crf[i]);
+    for (i = 0; i < 8; i++) {
+        cpu_fprintf(f, "%01x", ppc_get_crf(env, i));
+    }
     cpu_fprintf(f, "  [");
     for (i = 0; i < 8; i++) {
         char a = '-';
-        if (env->crf[i] & 0x08)
+        if (ppc_get_crf(env, i) & 0x08)
             a = 'L';
-        else if (env->crf[i] & 0x04)
+        else if (ppc_get_crf(env, i) & 0x04)
             a = 'G';
-        else if (env->crf[i] & 0x02)
+        else if (ppc_get_crf(env, i) & 0x02)
             a = 'E';
-        cpu_fprintf(f, " %c%c", a, env->crf[i] & 0x01 ? 'O' : ' ');
+        cpu_fprintf(f, " %c%c", a, ppc_get_crf(env, i) & 0x01 ? 'O' : ' ');
     }
     cpu_fprintf(f, " ]             RES " TARGET_FMT_lx "\n",
                 env->reserve_addr);
-- 
1.8.3.1