diff mbox series

[v4,14/45] target/arm: Consolidate cpreg updates in add_cpreg_to_hashtable

Message ID 20220501055028.646596-15-richard.henderson@linaro.org
State New
Headers show
Series target/arm: Cleanups, new features, new cpus | expand

Commit Message

Richard Henderson May 1, 2022, 5:49 a.m. UTC 
Put most of the value writeback to the same place,
and improve the comment that goes with them.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

Comments

Peter Maydell May 3, 2022, 4:15 p.m. UTC | #1 
On Sun, 1 May 2022 at 07:06, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Put most of the value writeback to the same place,
> and improve the comment that goes with them.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  target/arm/helper.c | 28 ++++++++++++----------------
>  1 file changed, 12 insertions(+), 16 deletions(-)


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM
diff mbox series

Patch

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 118422d672..b2887d63b6 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -8543,10 +8543,19 @@  static void add_cpreg_to_hashtable(ARMCPU *cpu, const ARMCPRegInfo *r,
     *r2 = *r;
     r2->name = memcpy(r2 + 1, name, name_len);
 
-    /* Reset the secure state to the specific incoming state.  This is
-     * necessary as the register may have been defined with both states.
+    /*
+     * Update fields to match the instantiation, overwiting wildcards
+     * such as CP_ANY, ARM_CP_STATE_BOTH, or ARM_CP_SECSTATE_BOTH.
      */
+    r2->cp = cp;
+    r2->crm = crm;
+    r2->opc1 = opc1;
+    r2->opc2 = opc2;
+    r2->state = state;
     r2->secure = secstate;
+    if (opaque) {
+        r2->opaque = opaque;
+    }
 
     if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) {
         /* Register is banked (using both entries in array).
@@ -8587,20 +8596,7 @@  static void add_cpreg_to_hashtable(ARMCPU *cpu, const ARMCPRegInfo *r,
 #endif
         }
     }
-    if (opaque) {
-        r2->opaque = opaque;
-    }
-    /* reginfo passed to helpers is correct for the actual access,
-     * and is never ARM_CP_STATE_BOTH:
-     */
-    r2->state = state;
-    /* Make sure reginfo passed to helpers for wildcarded regs
-     * has the correct crm/opc1/opc2 for this reg, not CP_ANY:
-     */
-    r2->cp = cp;
-    r2->crm = crm;
-    r2->opc1 = opc1;
-    r2->opc2 = opc2;
+
     /* By convention, for wildcarded registers only the first
      * entry is used for migration; the others are marked as
      * ALIAS so we don't try to transfer the register