From da3b30cd945d111e6e2adb8ce18586aefb83a74e Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Thu, 1 Aug 2024 17:20:20 +0300
Subject: [PATCH] Kernel: Add macro to dump all syscalls and their return
 values

---
 kernel/kernel/Syscall.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/kernel/kernel/Syscall.cpp b/kernel/kernel/Syscall.cpp
index ab979b68..9ae400ce 100644
--- a/kernel/kernel/Syscall.cpp
+++ b/kernel/kernel/Syscall.cpp
@@ -7,6 +7,8 @@
 
 #include <termios.h>
 
+#define DUMP_ALL_SYSCALLS 0
+
 namespace Kernel
 {
 
@@ -28,6 +30,12 @@ namespace Kernel
 #undef O
 	};
 
+	static constexpr const char* s_syscall_names[] {
+#define O(enum, name) #enum,
+		__SYSCALL_LIST(O)
+#undef O
+	};
+
 	extern "C" long cpp_syscall_handler(int syscall, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4, uintptr_t arg5, InterruptStack* interrupt_stack)
 	{
 		ASSERT(GDT::is_user_segment(interrupt_stack->cs));
@@ -46,7 +54,13 @@ namespace Kernel
 		asm volatile("cli");
 
 		if (ret.is_error() && ret.error().get_error_code() == ENOTSUP)
-			dprintln("ENOTSUP {}", syscall);
+			dprintln("{}: ENOTSUP", s_syscall_names[syscall]);
+#if DUMP_ALL_SYSCALLS
+		else if (ret.is_error())
+			dprintln("{}: {}", s_syscall_names[syscall], ret.error());
+		else
+			dprintln("{}: {}", s_syscall_names[syscall], ret.value());
+#endif
 
 		if (ret.is_error() && ret.error().is_kernel_error())
 			Kernel::panic("Kernel error while returning to userspace {}", ret.error());