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authorWarner Losh <imp@bsdimp.com>2022-01-31 16:01:05 -0700
committerWarner Losh <imp@bsdimp.com>2022-02-26 21:05:21 -0700
commit647afdf1836548146b77c6ca68e93c7acfe35738 (patch)
treecd88758e670d117ab51c152020d8479da5ff97fd
parentc5c84d16519abf3909bad77ef03db36801f560d5 (diff)
bsd-user: introduce target.h
Create target.h. This file is intended to be simple and describe basic things about the architecture. If something is a basic feature of the architecture, it belongs here. Should we need something that's per-BSD there will be a target-os.h that will live in the per-bsd directories. Define regpairs_aligned to reflect whether or not registers are 'paired' for 64-bit arguments or not. This will be false for all 64-bit targets, and will be true on those architectures that pair (currently just armv7 and powerpc on FreeBSD 14.x). Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
-rw-r--r--bsd-user/arm/target.h21
-rw-r--r--bsd-user/i386/target.h21
-rw-r--r--bsd-user/qemu.h1
-rw-r--r--bsd-user/x86_64/target.h21
4 files changed, 64 insertions, 0 deletions
diff --git a/bsd-user/arm/target.h b/bsd-user/arm/target.h
new file mode 100644
index 0000000000..419c039b68
--- /dev/null
+++ b/bsd-user/arm/target.h
@@ -0,0 +1,21 @@
+/*
+ * Intel general target stuff that's common to all i386 details
+ *
+ * Copyright (c) 2022 M. Warner Losh <imp@bsdimp.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef TARGET_H
+#define TARGET_H
+
+/*
+ * arm EABI 'lumps' the registers for 64-bit args.
+ */
+static inline bool regpairs_aligned(void *cpu_env)
+{
+ return true;
+}
+
+#endif /* ! TARGET_H */
+
diff --git a/bsd-user/i386/target.h b/bsd-user/i386/target.h
new file mode 100644
index 0000000000..9b9df047a3
--- /dev/null
+++ b/bsd-user/i386/target.h
@@ -0,0 +1,21 @@
+/*
+ * Intel general target stuff that's common to all i386 details
+ *
+ * Copyright (c) 2022 M. Warner Losh <imp@bsdimp.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef TARGET_ARCH_H
+#define TARGET_ARCH_H
+
+/*
+ * i386 doesn't 'lump' the registers for 64-bit args.
+ */
+static inline bool regpairs_aligned(void *cpu_env)
+{
+ return false;
+}
+
+#endif /* ! TARGET_ARCH_H */
+
diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index 56042ddbc5..a9efa807b7 100644
--- a/bsd-user/qemu.h
+++ b/bsd-user/qemu.h
@@ -35,6 +35,7 @@ extern char **environ;
#include "target_syscall.h"
#include "target_os_vmparam.h"
#include "target_os_signal.h"
+#include "target.h"
#include "exec/gdbstub.h"
/*
diff --git a/bsd-user/x86_64/target.h b/bsd-user/x86_64/target.h
new file mode 100644
index 0000000000..8956631db1
--- /dev/null
+++ b/bsd-user/x86_64/target.h
@@ -0,0 +1,21 @@
+/*
+ * Intel general target stuff that's common to all x86_64 details
+ *
+ * Copyright (c) 2022 M. Warner Losh <imp@bsdimp.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef TARGET_H
+#define TARGET_H
+
+/*
+ * x86 doesn't 'lump' the registers for 64-bit args, all args are 64 bits.
+ */
+static inline bool regpairs_aligned(void *cpu_env)
+{
+ return false;
+}
+
+#endif /* ! TARGET_H */
+