Syscall parameters (1)

kaleid/kernel/ke/isr.asm

@@ -27,10 +27,9 @@
 %include "kaleid/kernel/ke/cpuf.inc"
 
 global KeLoadIDT
-
 extern _KeIdtPtr
 extern _KeHandleISR
-extern _KeSyscallHandler
+extern syscallPreHandler
 
 ;;
 ;; Loads the IDT
@@ -78,73 +77,6 @@ Die:
     hlt
     jmp Die
 
-;;
-;; System call pre-handler
-;;
-syscallPreHandler:
-    push r15
-    push r14
-    push r13
-    push r12
-    push r11
-    push r10
-    push r9
-    push r8
-    push rbp
-    push 0
-    push rsi
-    push rdx
-    push rcx
-    push rbx
-    push rax
-    mov rax, cr8
-    push rax
-    mov rax, cr4
-    push rax
-    mov rax, cr3
-    push rax
-    mov rax, cr2
-    push rax
-    mov rax, cr0
-    push rax
-    mov rcx, 0xC0000080
-    rdmsr
-    push rax
-
-    ; Call the C routine to dispatch interrupts
-    cld             ; DF must be cleared by the caller
-    mov rsi, rsp    ; First argument points to the processor state
-    mov rbp, 0      ; Terminate stack traces here
-
-    call _KeSyscallHandler
-
-    ; pop the control registers
-    add rsp, 48
-    ; pop registers except return value
-    pop rbx
-    pop rbx ; 2x rbx to discard rax
-    pop rcx
-    pop rdx
-    pop rsi
-    pop rdi
-    pop rbp
-    pop r8
-    pop r9
-    pop r10
-    pop r11
-    pop r12
-    pop r13
-    pop r14
-    pop r15
-    ; pop the error code and interrupt id
-    add rsp, 16
-    
-    iretq
-
-Die2:
-    hlt
-    jmp Die
-
 ;; Divide Error Fault
 IsrWithoutErrCode 0
 

kaleid/kernel/ke/syscall.asm

@@ -28,7 +28,72 @@
 
 global KeJumpToUserspace
 global KeSyscall
-extern KernLog
+global syscallPreHandler
+extern _KeSyscallHandler
+
+
+;;
+;; System call pre-handler
+;;
+syscallPreHandler:
+    push r15
+    push r14
+    push r13
+    push r12
+    push r11
+    push 0
+    push r9
+    push r8
+    push rbp
+    push 0
+    push 0
+    push 0
+    push rcx
+    push rbx
+    push rax
+    mov rax, cr8
+    push rax
+    mov rax, cr4
+    push rax
+    mov rax, cr3
+    push rax
+    mov rax, cr2
+    push rax
+    mov rax, cr0
+    push rax
+    mov rcx, 0xC0000080
+    rdmsr
+    push rax
+
+    ; Call the C routine to dispatch interrupts
+    cld             ; DF must be cleared by the caller
+    mov rsi, rsp    ; First argument points to the processor state
+    mov rbp, 0      ; Terminate stack traces here
+
+    call _KeSyscallHandler
+
+    ; pop the control registers
+    add rsp, 48
+    ; pop registers except return value
+    pop rbx
+    pop rbx ; 2x rbx to discard rax
+    pop rcx
+    pop rdx
+    pop rsi
+    pop rdi
+    pop rbp
+    pop r8
+    pop r9
+    pop r10
+    pop r11
+    pop r12
+    pop r13
+    pop r14
+    pop r15
+    ; pop the error code and interrupt id
+    add rsp, 16
+    
+    iretq
 
 ;;
 ;; To get ring3 code running