exec: Add semihosting stubs

qemu/aarch64.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_aarch64
 #define scr_write scr_write_aarch64
 #define sctlr_write sctlr_write_aarch64
+#define semihosting_enabled semihosting_enabled_aarch64
+#define semihosting_get_target semihosting_get_target_aarch64
+#define semihosting_get_arg semihosting_get_arg_aarch64
+#define semihosting_get_argc semihosting_get_argc_aarch64
+#define semihosting_get_cmdline semihosting_get_cmdline_aarch64
 #define set_bit set_bit_aarch64
 #define set_bits set_bits_aarch64
 #define set_default_nan_mode set_default_nan_mode_aarch64

qemu/aarch64eb.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_aarch64eb
 #define scr_write scr_write_aarch64eb
 #define sctlr_write sctlr_write_aarch64eb
+#define semihosting_enabled semihosting_enabled_aarch64eb
+#define semihosting_get_target semihosting_get_target_aarch64eb
+#define semihosting_get_arg semihosting_get_arg_aarch64eb
+#define semihosting_get_argc semihosting_get_argc_aarch64eb
+#define semihosting_get_cmdline semihosting_get_cmdline_aarch64eb
 #define set_bit set_bit_aarch64eb
 #define set_bits set_bits_aarch64eb
 #define set_default_nan_mode set_default_nan_mode_aarch64eb

qemu/arm.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_arm
 #define scr_write scr_write_arm
 #define sctlr_write sctlr_write_arm
+#define semihosting_enabled semihosting_enabled_arm
+#define semihosting_get_target semihosting_get_target_arm
+#define semihosting_get_arg semihosting_get_arg_arm
+#define semihosting_get_argc semihosting_get_argc_arm
+#define semihosting_get_cmdline semihosting_get_cmdline_arm
 #define set_bit set_bit_arm
 #define set_bits set_bits_arm
 #define set_default_nan_mode set_default_nan_mode_arm

qemu/armeb.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_armeb
 #define scr_write scr_write_armeb
 #define sctlr_write sctlr_write_armeb
+#define semihosting_enabled semihosting_enabled_armeb
+#define semihosting_get_target semihosting_get_target_armeb
+#define semihosting_get_arg semihosting_get_arg_armeb
+#define semihosting_get_argc semihosting_get_argc_armeb
+#define semihosting_get_cmdline semihosting_get_cmdline_armeb
 #define set_bit set_bit_armeb
 #define set_bits set_bits_armeb
 #define set_default_nan_mode set_default_nan_mode_armeb

qemu/header_gen.py

@@ -2588,6 +2588,11 @@ symbols = (
     'save_globals',
     'scr_write',
     'sctlr_write',
+    'semihosting_enabled',
+    'semihosting_get_target',
+    'semihosting_get_arg',
+    'semihosting_get_argc',
+    'semihosting_get_cmdline',
     'set_bit',
     'set_bits',
     'set_default_nan_mode',

qemu/include/exec/semihost.h

@@ -0,0 +1,64 @@
+/*
+ * Semihosting support
+ *
+ * Copyright (c) 2015 Imagination Technologies
+ *
+ * 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/>.
+ */
+
+#ifndef SEMIHOST_H
+#define SEMIHOST_H
+
+typedef enum SemihostingTarget {
+    SEMIHOSTING_TARGET_AUTO = 0,
+    SEMIHOSTING_TARGET_NATIVE,
+    SEMIHOSTING_TARGET_GDB
+} SemihostingTarget;
+
+#ifdef CONFIG_USER_ONLY
+static inline bool semihosting_enabled(void)
+{
+    // UNICORN: Always return false
+    return false;
+    // return true;
+}
+
+static inline SemihostingTarget semihosting_get_target(void)
+{
+    return SEMIHOSTING_TARGET_AUTO;
+}
+
+static inline const char *semihosting_get_arg(int i)
+{
+    return NULL;
+}
+
+static inline int semihosting_get_argc(void)
+{
+    return 0;
+}
+
+static inline const char *semihosting_get_cmdline(void)
+{
+    return NULL;
+}
+#else
+bool semihosting_enabled(void);
+SemihostingTarget semihosting_get_target(void);
+const char *semihosting_get_arg(int i);
+int semihosting_get_argc(void);
+const char *semihosting_get_cmdline(void);
+#endif
+
+#endif

qemu/m68k.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_m68k
 #define scr_write scr_write_m68k
 #define sctlr_write sctlr_write_m68k
+#define semihosting_enabled semihosting_enabled_m68k
+#define semihosting_get_target semihosting_get_target_m68k
+#define semihosting_get_arg semihosting_get_arg_m68k
+#define semihosting_get_argc semihosting_get_argc_m68k
+#define semihosting_get_cmdline semihosting_get_cmdline_m68k
 #define set_bit set_bit_m68k
 #define set_bits set_bits_m68k
 #define set_default_nan_mode set_default_nan_mode_m68k

qemu/mips.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_mips
 #define scr_write scr_write_mips
 #define sctlr_write sctlr_write_mips
+#define semihosting_enabled semihosting_enabled_mips
+#define semihosting_get_target semihosting_get_target_mips
+#define semihosting_get_arg semihosting_get_arg_mips
+#define semihosting_get_argc semihosting_get_argc_mips
+#define semihosting_get_cmdline semihosting_get_cmdline_mips
 #define set_bit set_bit_mips
 #define set_bits set_bits_mips
 #define set_default_nan_mode set_default_nan_mode_mips

qemu/mips64.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_mips64
 #define scr_write scr_write_mips64
 #define sctlr_write sctlr_write_mips64
+#define semihosting_enabled semihosting_enabled_mips64
+#define semihosting_get_target semihosting_get_target_mips64
+#define semihosting_get_arg semihosting_get_arg_mips64
+#define semihosting_get_argc semihosting_get_argc_mips64
+#define semihosting_get_cmdline semihosting_get_cmdline_mips64
 #define set_bit set_bit_mips64
 #define set_bits set_bits_mips64
 #define set_default_nan_mode set_default_nan_mode_mips64

qemu/mips64el.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_mips64el
 #define scr_write scr_write_mips64el
 #define sctlr_write sctlr_write_mips64el
+#define semihosting_enabled semihosting_enabled_mips64el
+#define semihosting_get_target semihosting_get_target_mips64el
+#define semihosting_get_arg semihosting_get_arg_mips64el
+#define semihosting_get_argc semihosting_get_argc_mips64el
+#define semihosting_get_cmdline semihosting_get_cmdline_mips64el
 #define set_bit set_bit_mips64el
 #define set_bits set_bits_mips64el
 #define set_default_nan_mode set_default_nan_mode_mips64el

qemu/mipsel.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_mipsel
 #define scr_write scr_write_mipsel
 #define sctlr_write sctlr_write_mipsel
+#define semihosting_enabled semihosting_enabled_mipsel
+#define semihosting_get_target semihosting_get_target_mipsel
+#define semihosting_get_arg semihosting_get_arg_mipsel
+#define semihosting_get_argc semihosting_get_argc_mipsel
+#define semihosting_get_cmdline semihosting_get_cmdline_mipsel
 #define set_bit set_bit_mipsel
 #define set_bits set_bits_mipsel
 #define set_default_nan_mode set_default_nan_mode_mipsel

qemu/powerpc.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_powerpc
 #define scr_write scr_write_powerpc
 #define sctlr_write sctlr_write_powerpc
+#define semihosting_enabled semihosting_enabled_powerpc
+#define semihosting_get_target semihosting_get_target_powerpc
+#define semihosting_get_arg semihosting_get_arg_powerpc
+#define semihosting_get_argc semihosting_get_argc_powerpc
+#define semihosting_get_cmdline semihosting_get_cmdline_powerpc
 #define set_bit set_bit_powerpc
 #define set_bits set_bits_powerpc
 #define set_default_nan_mode set_default_nan_mode_powerpc

qemu/sparc.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_sparc
 #define scr_write scr_write_sparc
 #define sctlr_write sctlr_write_sparc
+#define semihosting_enabled semihosting_enabled_sparc
+#define semihosting_get_target semihosting_get_target_sparc
+#define semihosting_get_arg semihosting_get_arg_sparc
+#define semihosting_get_argc semihosting_get_argc_sparc
+#define semihosting_get_cmdline semihosting_get_cmdline_sparc
 #define set_bit set_bit_sparc
 #define set_bits set_bits_sparc
 #define set_default_nan_mode set_default_nan_mode_sparc

qemu/sparc64.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_sparc64
 #define scr_write scr_write_sparc64
 #define sctlr_write sctlr_write_sparc64
+#define semihosting_enabled semihosting_enabled_sparc64
+#define semihosting_get_target semihosting_get_target_sparc64
+#define semihosting_get_arg semihosting_get_arg_sparc64
+#define semihosting_get_argc semihosting_get_argc_sparc64
+#define semihosting_get_cmdline semihosting_get_cmdline_sparc64
 #define set_bit set_bit_sparc64
 #define set_bits set_bits_sparc64
 #define set_default_nan_mode set_default_nan_mode_sparc64

qemu/target-arm/translate-a64.c

@@ -32,7 +32,7 @@
 
 #include "exec/helper-proto.h"
 #include "exec/helper-gen.h"
-
+#include "exec/semihost.h"
 #include "exec/gen-icount.h"
 
 #ifdef CONFIG_USER_ONLY

qemu/vl.c

@@ -30,6 +30,7 @@
 #include "sysemu/cpus.h"
 #include "vl.h"
 #include "uc_priv.h"
+#include "exec/semihost.h"
 #include "crypto/init.h"
 
 #define DEFAULT_RAM_SIZE 128
@@ -54,6 +55,34 @@ void cpu_stop_current(struct uc_struct *uc)
     }
 }
 
+/***********************************************************/
+/* Semihosting */
+
+bool semihosting_enabled(void)
+{
+    // UNICORN: Always return false
+    return false;
+}
+
+SemihostingTarget semihosting_get_target(void)
+{
+    return SEMIHOSTING_TARGET_AUTO;
+}
+
+const char *semihosting_get_arg(int i)
+{
+    return NULL;
+}
+
+int semihosting_get_argc(void)
+{
+    return 0;
+}
+
+const char *semihosting_get_cmdline(void)
+{
+    return NULL;
+}
 
 /***********************************************************/
 /* machine registration */

qemu/x86_64.h

@@ -2582,6 +2582,11 @@
 #define save_globals save_globals_x86_64
 #define scr_write scr_write_x86_64
 #define sctlr_write sctlr_write_x86_64
+#define semihosting_enabled semihosting_enabled_x86_64
+#define semihosting_get_target semihosting_get_target_x86_64
+#define semihosting_get_arg semihosting_get_arg_x86_64
+#define semihosting_get_argc semihosting_get_argc_x86_64
+#define semihosting_get_cmdline semihosting_get_cmdline_x86_64
 #define set_bit set_bit_x86_64
 #define set_bits set_bits_x86_64
 #define set_default_nan_mode set_default_nan_mode_x86_64