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[35/45] target/hppa: Split PSW X and B into their own field

Message ID 20240425000023.1002026-36-richard.henderson@linaro.org
State Superseded
Headers show
Series target/hppa: Misc improvements | expand

Commit Message

Richard Henderson April 25, 2024, midnight UTC 
Generally, both of these bits are cleared at the end of each
instruction.  By separating these, we will be able to clear
both with a single insn, instead of 2 or 3.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/hppa/cpu.h    | 3 ++-
 target/hppa/helper.c | 6 +++---
 2 files changed, 5 insertions(+), 4 deletions(-)
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Patch

diff --git a/target/hppa/cpu.h b/target/hppa/cpu.h
index 66cae795bd..629299653d 100644
--- a/target/hppa/cpu.h
+++ b/target/hppa/cpu.h
@@ -214,7 +214,8 @@  typedef struct CPUArchState {
     uint64_t fr[32];
     uint64_t sr[8];          /* stored shifted into place for gva */
 
-    target_ulong psw;        /* All psw bits except the following:  */
+    uint32_t psw;            /* All psw bits except the following:  */
+    uint32_t psw_xb;         /* X and B, in their normal positions */
     target_ulong psw_n;      /* boolean */
     target_long psw_v;       /* in most significant bit */
 
diff --git a/target/hppa/helper.c b/target/hppa/helper.c
index 7d22c248fb..b79ddd8184 100644
--- a/target/hppa/helper.c
+++ b/target/hppa/helper.c
@@ -54,7 +54,7 @@  target_ulong cpu_hppa_get_psw(CPUHPPAState *env)
 
     psw |= env->psw_n * PSW_N;
     psw |= (env->psw_v < 0) * PSW_V;
-    psw |= env->psw;
+    psw |= env->psw | env->psw_xb;
 
     return psw;
 }
@@ -76,8 +76,8 @@  void cpu_hppa_put_psw(CPUHPPAState *env, target_ulong psw)
     }
     psw &= ~reserved;
 
-    env->psw = psw & (uint32_t)~(PSW_N | PSW_V | PSW_CB);
-
+    env->psw = psw & (uint32_t)~(PSW_B | PSW_N | PSW_V | PSW_X | PSW_CB);
+    env->psw_xb = psw & (PSW_X | PSW_B);
     env->psw_n = (psw / PSW_N) & 1;
     env->psw_v = -((psw / PSW_V) & 1);