target-alpha: Move memory helpers to mem_helper.c.

This completes the transition away from AREG0.  This patch must
be last because it requires CONFIG_TCG_PASS_AREG0 set too.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 151 insertions, 0 deletions

diff --git a/target-alpha/mem_helper.c b/target-alpha/mem_helper.c
new file mode 100644
index 0000000000..dd5ca4933a
--- /dev/null
+++ b/target-alpha/mem_helper.c
@@ -0,0 +1,151 @@
+/*
+ *  Helpers for loads and stores
+ *
+ *  Copyright (c) 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 "helper.h"
+
+
+/* Softmmu support */
+#ifndef CONFIG_USER_ONLY
+
+uint64_t helper_ldl_phys(uint64_t p)
+{
+    return (int32_t)ldl_phys(p);
+}
+
+uint64_t helper_ldq_phys(uint64_t p)
+{
+    return ldq_phys(p);
+}
+
+uint64_t helper_ldl_l_phys(CPUAlphaState *env, uint64_t p)
+{
+    env->lock_addr = p;
+    return env->lock_value = (int32_t)ldl_phys(p);
+}
+
+uint64_t helper_ldq_l_phys(CPUAlphaState *env, uint64_t p)
+{
+    env->lock_addr = p;
+    return env->lock_value = ldq_phys(p);
+}
+
+void helper_stl_phys(uint64_t p, uint64_t v)
+{
+    stl_phys(p, v);
+}
+
+void helper_stq_phys(uint64_t p, uint64_t v)
+{
+    stq_phys(p, v);
+}
+
+uint64_t helper_stl_c_phys(CPUAlphaState *env, uint64_t p, uint64_t v)
+{
+    uint64_t ret = 0;
+
+    if (p == env->lock_addr) {
+        int32_t old = ldl_phys(p);
+        if (old == (int32_t)env->lock_value) {
+            stl_phys(p, v);
+            ret = 1;
+        }
+    }
+    env->lock_addr = -1;
+
+    return ret;
+}
+
+uint64_t helper_stq_c_phys(CPUAlphaState *env, uint64_t p, uint64_t v)
+{
+    uint64_t ret = 0;
+
+    if (p == env->lock_addr) {
+        uint64_t old = ldq_phys(p);
+        if (old == env->lock_value) {
+            stq_phys(p, v);
+            ret = 1;
+        }
+    }
+    env->lock_addr = -1;
+
+    return ret;
+}
+
+static void do_unaligned_access(CPUAlphaState *env, target_ulong addr,
+                                int is_write, int is_user, void *retaddr)
+{
+    uint64_t pc;
+    uint32_t insn;
+
+    do_restore_state(env, retaddr);
+
+    pc = env->pc;
+    insn = cpu_ldl_code(env, pc);
+
+    env->trap_arg0 = addr;
+    env->trap_arg1 = insn >> 26;                /* opcode */
+    env->trap_arg2 = (insn >> 21) & 31;         /* dest regno */
+    env->exception_index = EXCP_UNALIGN;
+    env->error_code = 0;
+    cpu_loop_exit(env);
+}
+
+void cpu_unassigned_access(CPUAlphaState *env, target_phys_addr_t addr,
+                           int is_write, int is_exec, int unused, int size)
+{
+    env->trap_arg0 = addr;
+    env->trap_arg1 = is_write;
+    dynamic_excp(env, NULL, EXCP_MCHK, 0);
+}
+
+#include "softmmu_exec.h"
+
+#define MMUSUFFIX _mmu
+#define ALIGNED_ONLY
+
+#define SHIFT 0
+#include "softmmu_template.h"
+
+#define SHIFT 1
+#include "softmmu_template.h"
+
+#define SHIFT 2
+#include "softmmu_template.h"
+
+#define SHIFT 3
+#include "softmmu_template.h"
+
+/* try to fill the TLB and return an exception if error. If retaddr is
+   NULL, it means that the function was called in C code (i.e. not
+   from generated code or from helper.c) */
+/* XXX: fix it to restore all registers */
+void tlb_fill(CPUAlphaState *env, target_ulong addr, int is_write,
+              int mmu_idx, void *retaddr)
+{
+    int ret;
+
+    ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx);
+    if (unlikely(ret != 0)) {
+        do_restore_state(env, retaddr);
+        /* Exception index and error code are already set */
+        cpu_loop_exit(env);
+    }
+}
+#endif /* CONFIG_USER_ONLY */