Kernel: Implement syscalls for i686 and cleanup x86_64

This actually allows i686 to boot properly!
2024-04-03 02:23:23 +03:00
parent 9e073e9fa0
commit 0dd74e3c9d
8 changed files with 120 additions and 48 deletions
--- a/kernel/arch/x86_64/Syscall.S
+++ b/kernel/arch/x86_64/Syscall.S
@@ -6,13 +6,16 @@ sys_fork_trampoline:
 	pushq %r13
 	pushq %r14
 	pushq %r15
+
 	call read_ip
 	testq %rax, %rax
-	je .done
+	je .reload_stack
+
 	movq %rax, %rsi
 	movq %rsp, %rdi
 	call sys_fork
-.done:
+
+ .done:
 	popq %r15
 	popq %r14
 	popq %r13
@@ -20,3 +23,9 @@ sys_fork_trampoline:
 	popq %rbp
 	popq %rbx
 	ret
+
+ .reload_stack:
+	call get_thread_start_sp
+	movq %rax, %rsp
+	xorq %rax, %rax
+	jmp .done
--- a/kernel/arch/x86_64/Thread.S
+++ b/kernel/arch/x86_64/Thread.S
@@ -7,7 +7,7 @@ read_ip:
 # void start_kernel_thread()
 .global start_kernel_thread
 start_kernel_thread:
-	call get_start_kernel_thread_sp
+	call get_thread_start_sp
 	movq %rax, %rsp

 	# STACK LAYOUT
@@ -27,7 +27,7 @@ start_kernel_thread:

 .global start_userspace_thread
 start_userspace_thread:
-	call get_start_kernel_thread_sp
+	call get_thread_start_sp
 	movq %rax, %rsp

 	# STACK LAYOUT