Kernel: Use syscall/sysret for syscalls in x86_64

2026-01-09 15:15:46 +02:00
parent 94bd74d0bb
commit a9ceab0415
19 changed files with 178 additions and 149 deletions
--- a/kernel/arch/i686/Syscall.S
+++ b/kernel/arch/i686/Syscall.S
@@ -15,9 +15,7 @@ asm_syscall_handler:
 	andl $-16, %esp

 	# push arguments
-	subl $4, %esp
-	pushl %ebp
-	addl $24, (%esp)
+	subl $8, %esp
 	pushl %edi
 	pushl %esi
 	pushl %edx
@@ -65,7 +63,7 @@ sys_fork_trampoline:

 	call read_ip
 	testl %eax, %eax
-	jz .reload_stack
+	jz .done

 	movl %esp, %ebx

@@ -81,9 +79,3 @@ sys_fork_trampoline:
 	popl %ebx
 	popl %ebp
 	ret
-
- .reload_stack:
-	call get_thread_start_sp
-	movl %eax, %esp
-	xorl %eax, %eax
-	jmp .done