[USER] System calls

2016-12-06 15:50:35 +01:00
parent 63b3c3f2c0
commit a7d2b24a79
9 changed files with 166 additions and 2 deletions
--- a/kernel/interrupts/isr_common.S
+++ b/kernel/interrupts/isr_common.S
@@ -64,6 +64,15 @@ isr_return:
  pop r13
  pop r14
  pop r15
+
+  // Jump to syscall_return if we're in a syscall
+  push rax
+  mov rax, [rsp + 8]
+  cmp rax, INT_SYSCALL
+  .extern syscall_return
+  jz syscall_return
+  pop rax
+
  // Pop error code and fault number
  add rsp, 16
  iretq