trapslab initialized

kernel/memlayout.h

@@ -25,10 +25,6 @@
 #define VIRTIO0 0x10001000
 #define VIRTIO0_IRQ 1
 
-#ifdef LAB_NET
-#define E1000_IRQ 33
-#endif
-
 // qemu puts platform-level interrupt controller (PLIC) here.
 #define PLIC 0x0c000000L
 #define PLIC_PRIORITY (PLIC + 0x0)
@@ -49,7 +45,7 @@
 
 // map kernel stacks beneath the trampoline,
 // each surrounded by invalid guard pages.
-#define KSTACK(p) (TRAMPOLINE - (p)*2*PGSIZE - 3*PGSIZE)
+#define KSTACK(p) (TRAMPOLINE - ((p)+1)* 2*PGSIZE)
 
 // User memory layout.
 // Address zero first:
@@ -58,14 +54,6 @@
 //   fixed-size stack
 //   expandable heap
 //   ...
-//   USYSCALL (shared with kernel)
 //   TRAPFRAME (p->trapframe, used by the trampoline)
 //   TRAMPOLINE (the same page as in the kernel)
 #define TRAPFRAME (TRAMPOLINE - PGSIZE)
-#ifdef LAB_PGTBL
-#define USYSCALL (TRAPFRAME - PGSIZE)
-
-struct usyscall {
-  int pid;  // Process ID
-};
-#endif