From f481aba1a636f8c420b3fda2b70cc3d017a5f17e Mon Sep 17 00:00:00 2001
From: Alexander von Gluck IV <kallisti5@unixzen.com>
Date: Wed, 10 Apr 2019 08:17:22 -0500
Subject: [PATCH] libroot/syscall: Add riscv64, improve error handling

* Add generic riscv64 support.
* Previously, missing architecture syscall.inc's would
  result in obsecure unrecognized opcode messages.
* The logic should be identical, but with a friendly error.

Change-Id: I8f4878e99faf0f64465d2a27c3da2dd1e43c4ba5
Reviewed-on: https://review.haiku-os.org/c/1402
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
---
 .../libroot/os/arch/riscv64/syscalls.inc      | 33 +++++++++++++++++
 src/system/libroot/os/syscalls.S              | 35 ++++++++++---------
 2 files changed, 51 insertions(+), 17 deletions(-)
 create mode 100644 src/system/libroot/os/arch/riscv64/syscalls.inc

diff --git a/src/system/libroot/os/arch/riscv64/syscalls.inc b/src/system/libroot/os/arch/riscv64/syscalls.inc
new file mode 100644
index 0000000000..031585d2d7
--- /dev/null
+++ b/src/system/libroot/os/arch/riscv64/syscalls.inc
@@ -0,0 +1,33 @@
+/*
+** Copyright 2001-2007, Travis Geiselbrecht. All rights reserved.
+** Distributed under the terms of the MIT License.
+*/
+
+/* TODO actuall syscalls? */
+#define _SYSCALL(name, n) \
+.globl name; \
+.type name,%function; \
+.align 4; \
+name:
+
+#define SYSCALL0(name, n) _SYSCALL(name, n)
+#define SYSCALL1(name, n) _SYSCALL(name, n)
+#define SYSCALL2(name, n) _SYSCALL(name, n)
+#define SYSCALL3(name, n) _SYSCALL(name, n)
+#define SYSCALL4(name, n) _SYSCALL(name, n)
+#define SYSCALL5(name, n) _SYSCALL(name, n)
+#define SYSCALL6(name, n) _SYSCALL(name, n)
+#define SYSCALL7(name, n) _SYSCALL(name, n)
+#define SYSCALL8(name, n) _SYSCALL(name, n)
+#define SYSCALL9(name, n) _SYSCALL(name, n)
+#define SYSCALL10(name, n) _SYSCALL(name, n)
+#define SYSCALL11(name, n) _SYSCALL(name, n)
+#define SYSCALL12(name, n) _SYSCALL(name, n)
+#define SYSCALL13(name, n) _SYSCALL(name, n)
+#define SYSCALL14(name, n) _SYSCALL(name, n)
+#define SYSCALL15(name, n) _SYSCALL(name, n)
+#define SYSCALL16(name, n) _SYSCALL(name, n)
+#define SYSCALL17(name, n) _SYSCALL(name, n)
+#define SYSCALL18(name, n) _SYSCALL(name, n)
+#define SYSCALL19(name, n) _SYSCALL(name, n)
+#define SYSCALL20(name, n) _SYSCALL(name, n)
diff --git a/src/system/libroot/os/syscalls.S b/src/system/libroot/os/syscalls.S
index 2d773dda1e..4e4fb30593 100644
--- a/src/system/libroot/os/syscalls.S
+++ b/src/system/libroot/os/syscalls.S
@@ -1,29 +1,30 @@
-#ifdef ARCH_x86
+/*
+ * Copyright 2019, Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+
+#if defined(ARCH_x86)
 #	include "arch/x86/syscalls.inc"
-#endif
-#ifdef ARCH_x86_64
+#elif defined(ARCH_x86_64)
 #	include "arch/x86_64/syscalls.inc"
-#endif
-#ifdef ARCH_alpha
+#elif defined(ARCH_alpha)
 #	include "arch/alpha/syscalls.inc"
-#endif
-#ifdef ARCH_sh4
+#elif defined(ARCH_sh4)
 #	include "arch/sh4/syscalls.inc"
-#endif
-#ifdef ARCH_sparc
+#elif defined(ARCH_sparc)
 #	include "arch/sparc/syscalls.inc"
-#endif
-#ifdef ARCH_sparc64
+#elif defined(ARCH_sparc64)
 #	include "arch/sparc64/syscalls.inc"
-#endif
-#ifdef ARCH_ppc
+#elif defined(ARCH_ppc)
 #	include "arch/ppc/syscalls.inc"
-#endif
-#ifdef ARCH_arm
+#elif defined(ARCH_arm)
 #	include "arch/arm/syscalls.inc"
-#endif
-#ifdef ARCH_m68k
+#elif defined(ARCH_m68k)
 #	include "arch/m68k/syscalls.inc"
+#elif defined(ARCH_riscv64)
+#	include "arch/riscv64/syscalls.inc"
+#else
+#error	No syscalls macros defined for this architecture!
 #endif
 
 /* include the auto-generated file syscalls file */