+++ /dev/null
-;------------------------------------------------------------------------------\r
-;\r
-; Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>\r
-; This program and the accompanying materials\r
-; are licensed and made available under the terms and conditions of the BSD License\r
-; which accompanies this distribution. The full text of the license may be found at\r
-; http://opensource.org/licenses/bsd-license.php.\r
-;\r
-; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-;\r
-; Abstract:\r
-;\r
-; This file provides macro definitions for stuffing the Return Stack Buffer (RSB).\r
-;\r
-;------------------------------------------------------------------------------\r
-\r
-%define RSB_STUFF_ENTRIES 0x20\r
-\r
-;\r
-; parameters:\r
-; @param 1: register to use as counter (e.g. IA32:eax, X64:rax)\r
-; @param 2: stack pointer to restore (IA32:esp, X64:rsp)\r
-; @param 3: the size of a stack frame (IA32:4, X64:8)\r
-;\r
-%macro StuffRsb 3\r
- mov %1, RSB_STUFF_ENTRIES / 2\r
- %%Unroll1:\r
- call %%Unroll2\r
- %%SpecTrap1:\r
- pause\r
- lfence\r
- jmp %%SpecTrap1\r
- %%Unroll2:\r
- call %%StuffLoop\r
- %%SpecTrap2:\r
- pause\r
- lfence\r
- jmp %%SpecTrap2\r
- %%StuffLoop:\r
- dec %1\r
- jnz %%Unroll1\r
- add %2, RSB_STUFF_ENTRIES * %3 ; Restore the stack pointer\r
-%endmacro\r
-\r
-;\r
-; RSB stuffing macros for IA32 and X64\r
-;\r
-%macro StuffRsb32 0\r
- StuffRsb eax, esp, 4\r
-%endmacro\r
-\r
-%macro StuffRsb64 0\r
- StuffRsb rax, rsp, 8\r
-%endmacro\r