ppc: Split off timebase helpers

Move decrementer and timebase helpers to a dedicated file.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 160 insertions, 0 deletions

diff --git a/target-ppc/timebase_helper.c b/target-ppc/timebase_helper.c
new file mode 100644
index 0000000000..23f5cfa3da
--- /dev/null
+++ b/target-ppc/timebase_helper.c
@@ -0,0 +1,160 @@
+/*
+ *  PowerPC emulation helpers for QEMU.
+ *
+ *  Copyright (c) 2003-2007 Jocelyn Mayer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "cpu.h"
+#include "dyngen-exec.h"
+#include "helper.h"
+
+/*****************************************************************************/
+/* SPR accesses */
+
+target_ulong helper_load_tbl(void)
+{
+    return (target_ulong)cpu_ppc_load_tbl(env);
+}
+
+target_ulong helper_load_tbu(void)
+{
+    return cpu_ppc_load_tbu(env);
+}
+
+target_ulong helper_load_atbl(void)
+{
+    return (target_ulong)cpu_ppc_load_atbl(env);
+}
+
+target_ulong helper_load_atbu(void)
+{
+    return cpu_ppc_load_atbu(env);
+}
+
+#if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
+target_ulong helper_load_purr(void)
+{
+    return (target_ulong)cpu_ppc_load_purr(env);
+}
+#endif
+
+target_ulong helper_load_601_rtcl(void)
+{
+    return cpu_ppc601_load_rtcl(env);
+}
+
+target_ulong helper_load_601_rtcu(void)
+{
+    return cpu_ppc601_load_rtcu(env);
+}
+
+#if !defined(CONFIG_USER_ONLY)
+void helper_store_tbl(target_ulong val)
+{
+    cpu_ppc_store_tbl(env, val);
+}
+
+void helper_store_tbu(target_ulong val)
+{
+    cpu_ppc_store_tbu(env, val);
+}
+
+void helper_store_atbl(target_ulong val)
+{
+    cpu_ppc_store_atbl(env, val);
+}
+
+void helper_store_atbu(target_ulong val)
+{
+    cpu_ppc_store_atbu(env, val);
+}
+
+void helper_store_601_rtcl(target_ulong val)
+{
+    cpu_ppc601_store_rtcl(env, val);
+}
+
+void helper_store_601_rtcu(target_ulong val)
+{
+    cpu_ppc601_store_rtcu(env, val);
+}
+
+target_ulong helper_load_decr(void)
+{
+    return cpu_ppc_load_decr(env);
+}
+
+void helper_store_decr(target_ulong val)
+{
+    cpu_ppc_store_decr(env, val);
+}
+
+target_ulong helper_load_40x_pit(void)
+{
+    return load_40x_pit(env);
+}
+
+void helper_store_40x_pit(target_ulong val)
+{
+    store_40x_pit(env, val);
+}
+
+void helper_store_booke_tcr(target_ulong val)
+{
+    store_booke_tcr(env, val);
+}
+
+void helper_store_booke_tsr(target_ulong val)
+{
+    store_booke_tsr(env, val);
+}
+#endif
+
+/*****************************************************************************/
+/* Embedded PowerPC specific helpers */
+
+/* XXX: to be improved to check access rights when in user-mode */
+target_ulong helper_load_dcr(target_ulong dcrn)
+{
+    uint32_t val = 0;
+
+    if (unlikely(env->dcr_env == NULL)) {
+        qemu_log("No DCR environment\n");
+        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+                                   POWERPC_EXCP_INVAL |
+                                   POWERPC_EXCP_INVAL_INVAL);
+    } else if (unlikely(ppc_dcr_read(env->dcr_env,
+                                     (uint32_t)dcrn, &val) != 0)) {
+        qemu_log("DCR read error %d %03x\n", (uint32_t)dcrn, (uint32_t)dcrn);
+        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+                                   POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
+    }
+    return val;
+}
+
+void helper_store_dcr(target_ulong dcrn, target_ulong val)
+{
+    if (unlikely(env->dcr_env == NULL)) {
+        qemu_log("No DCR environment\n");
+        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+                                   POWERPC_EXCP_INVAL |
+                                   POWERPC_EXCP_INVAL_INVAL);
+    } else if (unlikely(ppc_dcr_write(env->dcr_env, (uint32_t)dcrn,
+                                      (uint32_t)val) != 0)) {
+        qemu_log("DCR write error %d %03x\n", (uint32_t)dcrn, (uint32_t)dcrn);
+        helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
+                                   POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
+    }
+}