From 45cea14165bac11f68fb4742e44a2662404656a5 Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Fri, 22 Mar 2024 12:48:54 +0200
Subject: [PATCH] Kernel: Move sys_fork trampolines to kernel/arch/ directory

---
 kernel/CMakeLists.txt                    |  3 ++-
 kernel/arch/i386/Syscall.S               | 18 ++++++++++++++++++
 kernel/{kernel => arch/x86_64}/Syscall.S |  0
 3 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 kernel/arch/i386/Syscall.S
 rename kernel/{kernel => arch/x86_64}/Syscall.S (100%)

diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index 14a2c771..a7438da8 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -83,7 +83,6 @@ set(KERNEL_SOURCES
 	kernel/Storage/Partition.cpp
 	kernel/Storage/StorageDevice.cpp
 	kernel/Syscall.cpp
-	kernel/Syscall.S
 	kernel/Terminal/FramebufferTerminal.cpp
 	kernel/Terminal/Serial.cpp
 	kernel/Terminal/TTY.cpp
@@ -111,6 +110,7 @@ if("${BANAN_ARCH}" STREQUAL "x86_64")
 		arch/x86_64/interrupts.S
 		arch/x86_64/PageTable.cpp
 		arch/x86_64/Signal.S
+		arch/x86_64/Syscall.S
 		arch/x86_64/Thread.S
 	)
 elseif("${BANAN_ARCH}" STREQUAL "i386")
@@ -118,6 +118,7 @@ elseif("${BANAN_ARCH}" STREQUAL "i386")
 		${KERNEL_SOURCES}
 		arch/i386/boot.S
 		arch/i386/SpinLock.S
+		arch/i386/Syscall.S
 		arch/i386/Thread.S
 	)
 else()
diff --git a/kernel/arch/i386/Syscall.S b/kernel/arch/i386/Syscall.S
new file mode 100644
index 00000000..617549c4
--- /dev/null
+++ b/kernel/arch/i386/Syscall.S
@@ -0,0 +1,18 @@
+.global sys_fork_trampoline
+sys_fork_trampoline:
+	subl $4, %esp
+	pushl %ebx
+	pushl %ebp
+	call read_rip
+	testl %eax, %eax
+	je .done
+	subl $8, %esp
+	pushl %eax
+	pushl %esp
+	call sys_fork
+	addl $16, %esp
+.done:
+	popl %ebp
+	popl %ebx
+	addl $4, %esp
+	ret
diff --git a/kernel/kernel/Syscall.S b/kernel/arch/x86_64/Syscall.S
similarity index 100%
rename from kernel/kernel/Syscall.S
rename to kernel/arch/x86_64/Syscall.S