target/s390x: Use explicit big-endian LD/ST API

The S390x architecture uses big endianness. Directly use
the big-endian LD/ST API.

Mechanical change running:

  $ for a in uw w l q; do \
      sed -i -e "s/ld${a}_p(/ld${a}_be_p(/" \
        $(git grep -wlE '(ld|st)u?[wlq]_p' target/s390x/);
    done

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251224162036.90404-3-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

target/s390x/cpu-system.c

@@ -63,7 +63,7 @@ static void s390_cpu_load_normal(CPUState *s)
     uint64_t spsw;
 
     if (!s390_is_pv()) {
-        spsw = ldq_phys(s->as, 0);
+        spsw = ldq_be_phys(s->as, 0);
         cpu->env.psw.mask = spsw & PSW_MASK_SHORT_CTRL;
         /*
          * Invert short psw indication, so SIE will report a specification

target/s390x/kvm/kvm.c

@@ -1667,10 +1667,10 @@ static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run)
     CPUState *cs = CPU(cpu);
     PSW oldpsw, newpsw;
 
-    newpsw.mask = ldq_phys(cs->as, cpu->env.psa +
-                           offsetof(LowCore, program_new_psw));
-    newpsw.addr = ldq_phys(cs->as, cpu->env.psa +
-                           offsetof(LowCore, program_new_psw) + 8);
+    newpsw.mask = ldq_be_phys(cs->as, cpu->env.psa +
+                              offsetof(LowCore, program_new_psw));
+    newpsw.addr = ldq_be_phys(cs->as, cpu->env.psa +
+                              offsetof(LowCore, program_new_psw) + 8);
     oldpsw.mask  = run->psw_mask;
     oldpsw.addr  = run->psw_addr;
     /*

target/s390x/mmu_helper.c

@@ -44,7 +44,8 @@ static void trigger_access_exception(CPUS390XState *env, uint32_t type,
     } else {
         CPUState *cs = env_cpu(env);
         if (type != PGM_ADDRESSING) {
-            stq_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code), tec);
+            stq_be_phys(cs->as, env->psa + offsetof(LowCore, trans_exc_code),
+                        tec);
         }
         trigger_pgm_exception(env, type);
     }

target/s390x/tcg/excp_helper.c

@@ -55,8 +55,8 @@ G_NORETURN void tcg_s390_data_exception(CPUS390XState *env, uint32_t dxc,
     g_assert(dxc <= 0xff);
 #if !defined(CONFIG_USER_ONLY)
     /* Store the DXC into the lowcore */
-    stl_phys(env_cpu(env)->as,
-             env->psa + offsetof(LowCore, data_exc_code), dxc);
+    stl_be_phys(env_cpu(env)->as,
+                env->psa + offsetof(LowCore, data_exc_code), dxc);
 #endif
 
     /* Store the DXC into the FPC if AFP is enabled */
@@ -72,8 +72,8 @@ G_NORETURN void tcg_s390_vector_exception(CPUS390XState *env, uint32_t vxc,
     g_assert(vxc <= 0xff);
 #if !defined(CONFIG_USER_ONLY)
     /* Always store the VXC into the lowcore, without AFP it is undefined */
-    stl_phys(env_cpu(env)->as,
-             env->psa + offsetof(LowCore, data_exc_code), vxc);
+    stl_be_phys(env_cpu(env)->as,
+                env->psa + offsetof(LowCore, data_exc_code), vxc);
 #endif
 
     /* Always store the VXC into the FPC, without AFP it is undefined */
@@ -651,10 +651,10 @@ void monitor_event(CPUS390XState *env,
                    uint8_t monitor_class, uintptr_t ra)
 {
     /* Store the Monitor Code and the Monitor Class Number into the lowcore */
-    stq_phys(env_cpu(env)->as,
-             env->psa + offsetof(LowCore, monitor_code), monitor_code);
-    stw_phys(env_cpu(env)->as,
-             env->psa + offsetof(LowCore, mon_class_num), monitor_class);
+    stq_be_phys(env_cpu(env)->as,
+                env->psa + offsetof(LowCore, monitor_code), monitor_code);
+    stw_be_phys(env_cpu(env)->as,
+                env->psa + offsetof(LowCore, mon_class_num), monitor_class);
 
     tcg_s390_program_interrupt(env, PGM_MONITOR, ra);
 }

target/s390x/tcg/mem_helper.c

@@ -958,8 +958,9 @@ uint32_t HELPER(mvpg)(CPUS390XState *env, uint64_t r0, uint32_t r1, uint32_t r2)
 inject_exc:
 #if !defined(CONFIG_USER_ONLY)
     if (exc != PGM_ADDRESSING) {
-        stq_phys(env_cpu(env)->as, env->psa + offsetof(LowCore, trans_exc_code),
-                 env->tlb_fill_tec);
+        stq_be_phys(env_cpu(env)->as,
+                    env->psa + offsetof(LowCore, trans_exc_code),
+                    env->tlb_fill_tec);
     }
     if (exc == PGM_PAGE_TRANS) {
         stb_phys(env_cpu(env)->as, env->psa + offsetof(LowCore, op_access_id),