Adding upstream version 1:10.0.2+ds.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

include/semihosting/uaccess.h

@@ -0,0 +1,121 @@
+/*
+ * Helper routines to provide target memory access for semihosting
+ * syscalls in system emulation mode.
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ *
+ * This code is licensed under the GPL
+ */
+
+#ifndef SEMIHOSTING_UACCESS_H
+#define SEMIHOSTING_UACCESS_H
+
+#ifdef CONFIG_USER_ONLY
+#error Cannot include semihosting/uaccess.h from user emulation
+#endif
+
+#include "exec/cpu-common.h"
+#include "exec/cpu-defs.h"
+#include "exec/tswap.h"
+#include "exec/page-protection.h"
+
+/**
+ * get_user_u64:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define get_user_u64(val, addr)                                         \
+    ({ uint64_t val_ = 0;                                               \
+       int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr),             \
+                                      &val_, sizeof(val_), 0);          \
+       (val) = tswap64(val_); ret_; })
+
+/**
+ * get_user_u32:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define get_user_u32(val, addr)                                         \
+    ({ uint32_t val_ = 0;                                               \
+       int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr),             \
+                                      &val_, sizeof(val_), 0);          \
+       (val) = tswap32(val_); ret_; })
+
+/**
+ * get_user_u8:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define get_user_u8(val, addr)                                          \
+    ({ uint8_t val_ = 0;                                                \
+       int ret_ = cpu_memory_rw_debug(env_cpu(env), (addr),             \
+                                      &val_, sizeof(val_), 0);          \
+       (val) = val_; ret_; })
+
+/**
+ * get_user_ual:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define get_user_ual(arg, p) get_user_u32(arg, p)
+
+/**
+ * put_user_u64:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define put_user_u64(val, addr)                                         \
+    ({ uint64_t val_ = tswap64(val);                                    \
+       cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); })
+
+/**
+ * put_user_u32:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define put_user_u32(val, addr)                                         \
+    ({ uint32_t val_ = tswap32(val);                                    \
+       cpu_memory_rw_debug(env_cpu(env), (addr), &val_, sizeof(val_), 1); })
+
+/**
+ * put_user_ual:
+ *
+ * Returns: 0 on success, -1 on error.
+ */
+#define put_user_ual(arg, p) put_user_u32(arg, p)
+
+/**
+ * uaccess_lock_user:
+ *
+ * The returned pointer should be freed using uaccess_unlock_user().
+ */
+void *uaccess_lock_user(CPUArchState *env, target_ulong addr,
+                        target_ulong len, bool copy);
+/**
+ * lock_user:
+ *
+ * The returned pointer should be freed using unlock_user().
+ */
+#define lock_user(type, p, len, copy) uaccess_lock_user(env, p, len, copy)
+
+/**
+ * uaccess_lock_user_string:
+ *
+ * The returned string should be freed using uaccess_unlock_user().
+ */
+char *uaccess_lock_user_string(CPUArchState *env, target_ulong addr);
+/**
+ * uaccess_lock_user_string:
+ *
+ * The returned string should be freed using unlock_user().
+ */
+#define lock_user_string(p) uaccess_lock_user_string(env, p)
+
+void uaccess_unlock_user(CPUArchState *env, void *p,
+                         target_ulong addr, target_ulong len);
+#define unlock_user(s, args, len) uaccess_unlock_user(env, s, args, len)
+
+ssize_t uaccess_strlen_user(CPUArchState *env, target_ulong addr);
+#define target_strlen(p) uaccess_strlen_user(env, p)
+
+#endif /* SEMIHOSTING_SOFTMMU_UACCESS_H */