From: Helge Deller <deller@gmx.de>
Date: Tue, 28 Jan 2025 19:08:17 +0000 (+0100)
Subject: target/hppa: 64-bit CPUs start with space register hashing enabled
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=75f73d5af1104c25975322a41b4bc4965fdff719;p=users%2Fdwmw2%2Fqemu.git

target/hppa: 64-bit CPUs start with space register hashing enabled

Turn on space register hashing for 64-bit CPUs when reset.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c
index b0bc9d35e4..c86f9190d2 100644
--- a/target/hppa/cpu.c
+++ b/target/hppa/cpu.c
@@ -28,6 +28,7 @@
 #include "exec/translation-block.h"
 #include "fpu/softfloat.h"
 #include "tcg/tcg.h"
+#include "hw/hppa/hppa_hardware.h"
 
 static void hppa_cpu_set_pc(CPUState *cs, vaddr value)
 {
@@ -217,6 +218,10 @@ static void hppa_cpu_reset_hold(Object *obj, ResetType type)
     memset(env, 0, offsetof(CPUHPPAState, end_reset_fields));
 
     cpu_hppa_loaded_fr0(env);
+
+    /* 64-bit machines start with space-register hashing enabled in %dr2 */
+    env->dr[2] = hppa_is_pa20(env) ? HPPA64_DIAG_SPHASH_ENABLE : 0;
+
     cpu_hppa_put_psw(env, PSW_M);
 }