move packet to aseg-paging in preparation for aseg's deletion

[netwatch.git] / aseg / packet.c

diff --git a/aseg/packet.c b/aseg/packet.c
deleted file mode 100644 (file)
index ff5c41e..0000000
--- a/aseg/packet.c
+++ /dev/null
@@ -1,77 +0,0 @@
-#include <stdint.h>
-#include "packet.h"
-
-#define PTE_FOR(x)      (((unsigned int)(x) >> 12) & 0x3FF)
-#define PDE_FOR(x)      ((unsigned int)(x) >> 22)
-#define ADDR_12_MASK(x)        ((unsigned int)(x) & ~((1 << 12) - 1))
-#define ADDR_22_MASK(x)        ((unsigned int)(x) & ~((1 << 22) - 1))
-#define LOWER_12(x)    ((unsigned int)(x) & ((1 << 12) - 1))
-#define LOWER_22(x)    ((unsigned int)(x) & ((1 << 22) - 1))
-
-#define PDE_4M_ADDR_SHIFT       22
-#define PTE_4K_ADDR_SHIFT       12
-#define PDE_TABLE_ADDR_SHIFT    12
-#define PTE_FRAME_ADDR_MASK     (~((1 << PTE_4K_ADDR_SHIFT) - 1))
-#define PDE_TABLE_ADDR_MASK     (~((1 << PDE_TABLE_ADDR_SHIFT) - 1))
-
-#define PDE_ATTRIB_INDEX        (1 << 12)
-#define PDE_GLOBAL              (1 << 8)
-#define PDE_PAGE_SIZE           (1 << 7)
-#define PDE_DIRTY               (1 << 6)
-#define PDE_ACCESSED            (1 << 5)
-#define PDE_NO_CACHE            (1 << 4)
-#define PDE_WRITE_THROUGH       (1 << 3)
-#define PDE_USER                (1 << 2)
-#define PDE_READ_WRITE          (1 << 1)
-#define PDE_PRESENT             (1 << 0)
-
-#define PTE_GLOBAL              (1 << 8)
-#define PTE_ATTRIB_INDEX        (1 << 7)
-#define PTE_DIRTY               (1 << 6)
-#define PTE_ACCESSED            (1 << 5)
-#define PTE_NO_CACHE            (1 << 4)
-#define PTE_WRITE_THROUGH       (1 << 3)
-#define PTE_USER                (1 << 2)
-#define PTE_READ_WRITE          (1 << 1)
-#define PTE_PRESENT             (1 << 0)
-
-asm ("get_cr3: mov %cr3, %eax \n ret");
-uint32_t * get_cr3();
-
-void * l2p (void * addr) {
-
-       uint32_t * cr3 = get_cr3();
-       uint32_t * page_table;
-       uint32_t pde, pte;
-
-       pde = cr3[PDE_FOR(addr)];
-
-       if (!(pde & PDE_PRESENT)) {
-               return 0;
-       }
-
-       if (pde & PDE_PAGE_SIZE) {
-               return (void *)(ADDR_22_MASK(pde) | LOWER_22(addr));
-       } else {
-               page_table = (uint32_t *)(ADDR_12_MASK(pde));
-               pte = page_table[PTE_FOR(addr)];
-
-               if (!pte & PTE_PRESENT) {
-                       return 0;
-               }
-               return (void *)(ADDR_12_MASK(pte) | LOWER_12(addr));
-       }
-}
-
-packet_t * check_packet (uint32_t logical_base) {
-       packet_t * physical_base;
-
-       if (LOWER_12(logical_base) != 0) return 0;
-
-       physical_base = l2p((void *)logical_base);
-
-       if (!physical_base) return 0;
-       if (physical_base->signature != 0x1BADD00D) return 0;
-       
-       return physical_base;
-}