[PATCH 06/23] Add Aarch64 register handling

[Ajeet Singh <itachis6234@gmail.com>]

From: Stacey Son <sson@FreeBSD.org>

Header file for managing CPU register states in
FreeBSD user mode

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Ajeet Singh <itachis@FreeBSD.org>
---
 bsd-user/aarch64/target_arch_reg.h | 56 ++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 bsd-user/aarch64/target_arch_reg.h

diff --git a/bsd-user/aarch64/target_arch_reg.h b/bsd-user/aarch64/target_arch_reg.h
new file mode 100644
index 0000000000..5c7154f0c1
--- /dev/null
+++ b/bsd-user/aarch64/target_arch_reg.h
@@ -0,0 +1,56 @@
+/*
+ *  FreeBSD arm64 register structures
+ *
+ *  Copyright (c) 2015 Stacey Son
+ *  All rights reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TARGET_ARCH_REG_H
+#define TARGET_ARCH_REG_H
+
+/* See sys/arm64/include/reg.h */
+typedef struct target_reg {
+    uint64_t        x[30];
+    uint64_t        lr;
+    uint64_t        sp;
+    uint64_t        elr;
+    uint64_t        spsr;
+} target_reg_t;
+
+typedef struct target_fpreg {
+    __uint128_t     fp_q[32];
+    uint32_t        fp_sr;
+    uint32_t        fp_cr;
+} target_fpreg_t;
+
+#define tswapreg(ptr)   tswapal(ptr)
+
+static inline void target_copy_regs(target_reg_t *regs, CPUARMState *env)
+{
+    int i;
+
+    for (i = 0; i < 30; i++) {
+        regs->x[i] = tswapreg(env->xregs[i]);
+    }
+    regs->lr = tswapreg(env->xregs[30]);
+    regs->sp = tswapreg(env->xregs[31]);
+    regs->elr = tswapreg(env->pc);
+    regs->spsr = tswapreg(pstate_read(env));
+}
+
+#undef tswapreg
+
+#endif /* TARGET_ARCH_REG_H */
-- 
2.34.1