semihosting: Move include/hw/semihosting/ -> include/semihosting/

We want to move the semihosting code out of hw/ in the next patch.

This patch contains the mechanical steps, created using:

  $ git mv include/hw/semihosting/ include/
  $ sed -i s,hw/semihosting,semihosting, $(git grep -l hw/semihosting)

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210226131356.3964782-2-f4bug@amsat.org>
Message-Id: <20210305135451.15427-2-alex.bennee@linaro.org>

include/semihosting/console.h

@@ -0,0 +1,69 @@
+/*
+ * Semihosting Console
+ *
+ * Copyright (c) 2019 Linaro Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef SEMIHOST_CONSOLE_H
+#define SEMIHOST_CONSOLE_H
+
+#include "cpu.h"
+
+/**
+ * qemu_semihosting_console_outs:
+ * @env: CPUArchState
+ * @s: host address of null terminated guest string
+ *
+ * Send a null terminated guest string to the debug console. This may
+ * be the remote gdb session if a softmmu guest is currently being
+ * debugged.
+ *
+ * Returns: number of bytes written.
+ */
+int qemu_semihosting_console_outs(CPUArchState *env, target_ulong s);
+
+/**
+ * qemu_semihosting_console_outc:
+ * @env: CPUArchState
+ * @s: host address of null terminated guest string
+ *
+ * Send single character from guest memory to the debug console. This
+ * may be the remote gdb session if a softmmu guest is currently being
+ * debugged.
+ *
+ * Returns: nothing
+ */
+void qemu_semihosting_console_outc(CPUArchState *env, target_ulong c);
+
+/**
+ * qemu_semihosting_console_inc:
+ * @env: CPUArchState
+ *
+ * Receive single character from debug console. This may be the remote
+ * gdb session if a softmmu guest is currently being debugged. As this
+ * call may block if no data is available we suspend the CPU and will
+ * re-execute the instruction when data is there. Therefore two
+ * conditions must be met:
+ *   - CPUState is synchronized before calling this function
+ *   - pc is only updated once the character is successfully returned
+ *
+ * Returns: character read OR cpu_loop_exit!
+ */
+target_ulong qemu_semihosting_console_inc(CPUArchState *env);
+
+/**
+ * qemu_semihosting_log_out:
+ * @s: pointer to string
+ * @len: length of string
+ *
+ * Send a string to the debug output. Unlike console_out these strings
+ * can't be sent to a remote gdb instance as they don't exist in guest
+ * memory.
+ *
+ * Returns: number of bytes written
+ */
+int qemu_semihosting_log_out(const char *s, int len);
+
+#endif /* SEMIHOST_CONSOLE_H */