[Qemu-devel] [PATCH 6/9] unicore32-softmmu: add generic cpu state save/load functions

[Guan Xuetao]

This patch adds generic cpu state save/load functions for UniCore32 ISA.
All architecture related registers are saved or loaded, and no optimization.

Signed-off-by: Guan Xuetao <address@hidden>
---
 target-unicore32/machine.c |   99 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 99 insertions(+), 0 deletions(-)
 create mode 100644 target-unicore32/machine.c

diff --git a/target-unicore32/machine.c b/target-unicore32/machine.c
new file mode 100644
index 0000000..e8c52cd
--- /dev/null
+++ b/target-unicore32/machine.c
@@ -0,0 +1,99 @@
+/*
+ * Generic machine functions for UniCore32 ISA
+ *
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or any later version.
+ * See the COPYING file in the top-level directory.
+ */
+#include "hw/hw.h"
+
+void cpu_save(QEMUFile *f, void *opaque)
+{
+    int i;
+    CPUUniCore32State *env = (CPUUniCore32State *)opaque;
+
+    for (i = 0; i < 32; i++) {
+        qemu_put_be32(f, env->regs[i]);
+    }
+    qemu_put_be32(f, cpu_asr_read(env));
+    qemu_put_be32(f, env->bsr);
+    for (i = 0; i < 6; i++) {
+        qemu_put_be32(f, env->banked_bsr[i]);
+        qemu_put_be32(f, env->banked_r29[i]);
+        qemu_put_be32(f, env->banked_r30[i]);
+    }
+
+    qemu_put_be32(f, env->cp0.c0_cpuid);
+    qemu_put_be32(f, env->cp0.c0_cachetype);
+    qemu_put_be32(f, env->cp0.c1_sys);
+    qemu_put_be32(f, env->cp0.c2_base);
+    qemu_put_be32(f, env->cp0.c3_faultstatus);
+    qemu_put_be32(f, env->cp0.c4_faultaddr);
+    qemu_put_be32(f, env->cp0.c5_cacheop);
+    qemu_put_be32(f, env->cp0.c6_tlbop);
+
+    qemu_put_be32(f, env->features);
+
+    if (env->features & UC32_HWCAP_UCF64) {
+        for (i = 0;  i < 16; i++) {
+            CPU_DoubleU u;
+            u.d = env->ucf64.regs[i];
+            qemu_put_be32(f, u.l.upper);
+            qemu_put_be32(f, u.l.lower);
+        }
+        for (i = 0; i < 32; i++) {
+            qemu_put_be32(f, env->ucf64.xregs[i]);
+        }
+    }
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    CPUUniCore32State *env = (CPUUniCore32State *)opaque;
+    int i;
+    uint32_t val;
+
+    if (version_id != CPU_SAVE_VERSION) {
+        return -EINVAL;
+    }
+
+    for (i = 0; i < 32; i++) {
+        env->regs[i] = qemu_get_be32(f);
+    }
+    val = qemu_get_be32(f);
+    /* Avoid mode switch when restoring ASR.  */
+    env->uncached_asr = val & ASR_M;
+    cpu_asr_write(env, val, 0xffffffff);
+    env->bsr = qemu_get_be32(f);
+    for (i = 0; i < 6; i++) {
+        env->banked_bsr[i] = qemu_get_be32(f);
+        env->banked_r29[i] = qemu_get_be32(f);
+        env->banked_r30[i] = qemu_get_be32(f);
+    }
+
+    env->cp0.c0_cpuid = qemu_get_be32(f);
+    env->cp0.c0_cachetype = qemu_get_be32(f);
+    env->cp0.c1_sys = qemu_get_be32(f);
+    env->cp0.c2_base = qemu_get_be32(f);
+    env->cp0.c3_faultstatus = qemu_get_be32(f);
+    env->cp0.c4_faultaddr = qemu_get_be32(f);
+    env->cp0.c5_cacheop = qemu_get_be32(f);
+    env->cp0.c6_tlbop = qemu_get_be32(f);
+
+    if (env->features & UC32_HWCAP_UCF64) {
+        for (i = 0;  i < 16; i++) {
+            CPU_DoubleU u;
+            u.l.upper = qemu_get_be32(f);
+            u.l.lower = qemu_get_be32(f);
+            env->ucf64.regs[i] = u.d;
+        }
+        for (i = 0; i < 16; i++) {
+            env->ucf64.xregs[i] = qemu_get_be32(f);
+        }
+    }
+
+    return 0;
+}
-- 
1.7.0.4