diff options
Diffstat (limited to 'sys/compat/ndis/kern_windrv.c')
| -rw-r--r-- | sys/compat/ndis/kern_windrv.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/compat/ndis/kern_windrv.c b/sys/compat/ndis/kern_windrv.c index f231863..5572988 100644 --- a/sys/compat/ndis/kern_windrv.c +++ b/sys/compat/ndis/kern_windrv.c @@ -311,6 +311,24 @@ windrv_unload(mod, img, len) #define WINDRV_LOADED htonl(0x42534F44) +#ifdef __amd64__ +static void +patch_user_shared_data_address(vm_offset_t img, size_t len) +{ + unsigned long i, n, max_addr, *addr; + + n = len - sizeof(unsigned long); + max_addr = KI_USER_SHARED_DATA + sizeof(kuser_shared_data); + for (i = 0; i < n; i++) { + addr = (unsigned long *)(img + i); + if (*addr >= KI_USER_SHARED_DATA && *addr < max_addr) { + *addr -= KI_USER_SHARED_DATA; + *addr += (unsigned long)&kuser_shared_data; + } + } +} +#endif + /* * Loader routine for actual Windows driver modules, ultimately * calls the driver's DriverEntry() routine. @@ -363,6 +381,10 @@ windrv_load(mod, img, len, bustype, devlist, regvals) return (ENOEXEC); } +#ifdef __amd64__ + patch_user_shared_data_address(img, len); +#endif + /* Dynamically link USBD.SYS -- optional */ if (pe_get_import_descriptor(img, &imp_desc, "USBD") == 0) { if (pe_patch_imports(img, "USBD", usbd_functbl)) |
