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449 lines
18 KiB
C
449 lines
18 KiB
C
/*
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* Unit test suite for ntdll exceptions
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*
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* Copyright 2005 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x500 /* For NTSTATUS */
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#endif
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winnt.h"
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#include "winreg.h"
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#include "winternl.h"
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#include "excpt.h"
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#include "wine/test.h"
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#ifdef __i386__
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static struct _TEB * (WINAPI *pNtCurrentTeb)(void);
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static NTSTATUS (WINAPI *pNtGetContextThread)(HANDLE,CONTEXT*);
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static NTSTATUS (WINAPI *pNtSetContextThread)(HANDLE,CONTEXT*);
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static void *code_mem;
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/* Test various instruction combinations that cause a protection fault on the i386,
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* and check what the resulting exception looks like.
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*/
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static const struct exception
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{
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BYTE code[18]; /* asm code */
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BYTE offset; /* offset of faulting instruction */
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BYTE length; /* length of faulting instruction */
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NTSTATUS status; /* expected status code */
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DWORD nb_params; /* expected number of parameters */
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DWORD params[4]; /* expected parameters */
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} exceptions[] =
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{
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/* test some privileged instructions */
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{ { 0xfb, 0xc3 }, /* sti; ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x6c, 0xc3 }, /* insb (%dx); ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x6d, 0xc3 }, /* insl (%dx); ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x6e, 0xc3 }, /* outsb (%dx); ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x6f, 0xc3 }, /* outsl (%dx); ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xe4, 0x11, 0xc3 }, /* inb $0x11,%al; ret */
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0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xe5, 0x11, 0xc3 }, /* inl $0x11,%eax; ret */
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0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xe6, 0x11, 0xc3 }, /* outb %al,$0x11; ret */
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0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xe7, 0x11, 0xc3 }, /* outl %eax,$0x11; ret */
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0, 2, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xed, 0xc3 }, /* inl (%dx),%eax; ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xee, 0xc3 }, /* outb %al,(%dx); ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xef, 0xc3 }, /* outl %eax,(%dx); ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xf4, 0xc3 }, /* hlt; ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0xfa, 0xc3 }, /* cli; ret */
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0, 1, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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/* test long jump to invalid selector */
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{ { 0xea, 0, 0, 0, 0, 0, 0, 0xc3 }, /* ljmp $0,$0; ret */
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0, 7, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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/* test iret to invalid selector */
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{ { 0x6a, 0x00, 0x6a, 0x00, 0x6a, 0x00, 0xcf, 0x83, 0xc4, 0x0c, 0xc3 },
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/* pushl $0; pushl $0; pushl $0; iret; addl $12,%esp; ret */
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6, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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/* test loading an invalid selector */
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{ { 0xb8, 0xef, 0xbe, 0x00, 0x00, 0x8e, 0xe8, 0xc3 }, /* mov $beef,%ax; mov %ax,%gs; ret */
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5, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xbee8 } },
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/* test accessing a zero selector */
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{ { 0x06, 0x31, 0xc0, 0x8e, 0xc0, 0x26, 0xa1, 0, 0, 0, 0, 0x07, 0xc3 },
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/* push %es; xor %eax,%eax; mov %ax,%es; mov %es:(0),%ax; pop %es */
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5, 6, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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/* test moving %cs -> %ss */
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{ { 0x0e, 0x17, 0x58, 0xc3 }, /* pushl %cs; popl %ss; popl %eax; ret */
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1, 1, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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/* test overlong instruction (limit is 16 bytes) */
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{ { 0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0xfa,0xc3 },
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0, 16, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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{ { 0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64,0xfa,0xc3 },
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0, 15, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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/* test invalid interrupt */
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{ { 0xcd, 0xff, 0xc3 }, /* int $0xff; ret */
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0, 2, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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/* test moves to/from Crx */
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{ { 0x0f, 0x20, 0xc0, 0xc3 }, /* movl %cr0,%eax; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x20, 0xe0, 0xc3 }, /* movl %cr4,%eax; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x22, 0xc0, 0xc3 }, /* movl %eax,%cr0; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x22, 0xe0, 0xc3 }, /* movl %eax,%cr4; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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/* test moves to/from Drx */
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{ { 0x0f, 0x21, 0xc0, 0xc3 }, /* movl %dr0,%eax; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x21, 0xc8, 0xc3 }, /* movl %dr1,%eax; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x21, 0xf8, 0xc3 }, /* movl %dr7,%eax; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x23, 0xc0, 0xc3 }, /* movl %eax,%dr0; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x23, 0xc8, 0xc3 }, /* movl %eax,%dr1; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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{ { 0x0f, 0x23, 0xf8, 0xc3 }, /* movl %eax,%dr7; ret */
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0, 3, STATUS_PRIVILEGED_INSTRUCTION, 0 },
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/* test memory reads */
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{ { 0xa1, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffc,%eax; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xfffffffc } },
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{ { 0xa1, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffd,%eax; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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{ { 0xa1, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xfffffffe,%eax; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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{ { 0xa1, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* movl 0xffffffff,%eax; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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/* test memory writes */
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{ { 0xa3, 0xfc, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffc; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 1, 0xfffffffc } },
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{ { 0xa3, 0xfd, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffd; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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{ { 0xa3, 0xfe, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xfffffffe; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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{ { 0xa3, 0xff, 0xff, 0xff, 0xff, 0xc3 }, /* movl %eax,0xffffffff; ret */
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0, 5, STATUS_ACCESS_VIOLATION, 2, { 0, 0xffffffff } },
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};
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static int got_exception;
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static void run_exception_test(const void *handler, const void* context,
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const void *code, unsigned int code_size)
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{
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struct {
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EXCEPTION_REGISTRATION_RECORD frame;
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const void *context;
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} exc_frame;
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void (*func)(void) = code_mem;
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exc_frame.frame.Handler = handler;
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exc_frame.frame.Prev = pNtCurrentTeb()->Tib.ExceptionList;
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exc_frame.context = context;
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memcpy(code_mem, code, code_size);
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pNtCurrentTeb()->Tib.ExceptionList = &exc_frame.frame;
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func();
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pNtCurrentTeb()->Tib.ExceptionList = exc_frame.frame.Prev;
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}
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static DWORD handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
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CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
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{
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const struct exception *except = *(const struct exception **)(frame + 1);
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unsigned int i, entry = except - exceptions;
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got_exception++;
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trace( "exception: %x flags:%x addr:%p\n",
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rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
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ok( rec->ExceptionCode == except->status,
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"%u: Wrong exception code %x/%x\n", entry, rec->ExceptionCode, except->status );
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ok( rec->ExceptionAddress == (char*)code_mem + except->offset,
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"%u: Wrong exception address %p/%p\n", entry,
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rec->ExceptionAddress, (char*)code_mem + except->offset );
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ok( rec->NumberParameters == except->nb_params,
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"%u: Wrong number of parameters %u/%u\n", entry, rec->NumberParameters, except->nb_params );
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for (i = 0; i < rec->NumberParameters; i++)
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ok( rec->ExceptionInformation[i] == except->params[i],
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"%u: Wrong parameter %d: %lx/%x\n",
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entry, i, rec->ExceptionInformation[i], except->params[i] );
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/* don't handle exception if it's not the address we expected */
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if (rec->ExceptionAddress != (char*)code_mem + except->offset) return ExceptionContinueSearch;
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context->Eip += except->length;
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return ExceptionContinueExecution;
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}
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static void test_prot_fault(void)
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{
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unsigned int i;
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for (i = 0; i < sizeof(exceptions)/sizeof(exceptions[0]); i++)
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{
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got_exception = 0;
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run_exception_test(handler, &exceptions[i], &exceptions[i].code,
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sizeof(exceptions[i].code));
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if (!i && !got_exception)
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{
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trace( "No exception, assuming win9x, no point in testing further\n" );
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break;
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}
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ok( got_exception == (exceptions[i].status != 0),
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"%u: bad exception count %d\n", i, got_exception );
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}
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}
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/* test handling of debug registers */
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static DWORD dreg_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
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CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
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{
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context->Eip += 2; /* Skips the popl (%eax) */
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context->Dr0 = 0x42424242;
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context->Dr1 = 0;
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context->Dr2 = 0;
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context->Dr3 = 0;
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context->Dr6 = 0;
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context->Dr7 = 0x155;
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return ExceptionContinueExecution;
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}
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static const BYTE segfault_code[5] = {
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0x31, 0xc0, /* xor %eax,%eax */
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0x8f, 0x00, /* popl (%eax) - cause exception */
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0xc3 /* ret */
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};
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/* test the single step exception behaviour */
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static DWORD single_step_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
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CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
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{
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got_exception++;
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ok (!(context->EFlags & 0x100), "eflags has single stepping bit set\n");
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if( got_exception < 3)
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context->EFlags |= 0x100; /* single step until popf instruction */
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else {
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/* show that the last single step exception on the popf instruction
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* (which removed the TF bit), still is a EXCEPTION_SINGLE_STEP exception */
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ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP,
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"exception is not EXCEPTION_SINGLE_STEP: %x\n", rec->ExceptionCode);
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}
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return ExceptionContinueExecution;
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}
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static const BYTE single_stepcode[] = {
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0x9c, /* pushf */
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0x58, /* pop %eax */
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0x0d,0,1,0,0, /* or $0x100,%eax */
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0x50, /* push %eax */
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0x9d, /* popf */
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0x35,0,1,0,0, /* xor $0x100,%eax */
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0x50, /* push %eax */
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0x9d, /* popf */
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0xc3
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};
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/* Test the alignment check (AC) flag handling. */
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static const BYTE align_check_code[] = {
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0x55, /* push %ebp */
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0x89,0xe5, /* mov %esp,%ebp */
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0x9c, /* pushf */
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0x58, /* pop %eax */
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0x0d,0,0,4,0, /* or $0x40000,%eax */
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0x50, /* push %eax */
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0x9d, /* popf */
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0x89,0xe0, /* mov %esp, %eax */
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0x8b,0x40,0x1, /* mov 0x1(%eax), %eax - cause exception */
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0x9c, /* pushf */
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0x58, /* pop %eax */
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0x35,0,0,4,0, /* xor $0x40000,%eax */
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0x50, /* push %eax */
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0x9d, /* popf */
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0x5d, /* pop %ebp */
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0xc3, /* ret */
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};
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static DWORD align_check_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
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CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
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{
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ok (!(context->EFlags & 0x40000), "eflags has AC bit set\n");
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got_exception++;
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return ExceptionContinueExecution;
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}
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/* test single stepping over hardware breakpoint */
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static DWORD bpx_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
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CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
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{
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got_exception++;
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ok( rec->ExceptionCode == EXCEPTION_SINGLE_STEP,
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"wrong exception code: %x\n", rec->ExceptionCode);
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if(got_exception == 1) {
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/* hw bp exception on first nop */
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ok( context->Eip == (DWORD)code_mem, "eip is wrong: %x instead of %x\n",
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context->Eip, (DWORD)code_mem);
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ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n");
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ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n");
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context->Dr0 = context->Dr0 + 1; /* set hw bp again on next instruction */
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context->EFlags |= 0x100; /* enable single stepping */
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} else if( got_exception == 2) {
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/* single step exception on second nop */
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ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n",
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context->Eip, (DWORD)code_mem + 1);
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todo_wine{ ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n"); };
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ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n");
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context->EFlags |= 0x100;
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} else if( got_exception == 3) {
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/* hw bp exception on second nop */
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ok( context->Eip == (DWORD)code_mem + 1, "eip is wrong: %x instead of %x\n",
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context->Eip, (DWORD)code_mem + 1);
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todo_wine{ ok( (context->Dr6 & 0xf) == 1, "B0 flag is not set in Dr6\n"); };
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ok( !(context->Dr6 & 0x4000), "BS flag is set in Dr6\n");
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context->Dr0 = 0; /* clear breakpoint */
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context->EFlags |= 0x100;
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} else {
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/* single step exception on ret */
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ok( context->Eip == (DWORD)code_mem + 2, "eip is wrong: %x instead of %x\n",
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context->Eip, (DWORD)code_mem + 2);
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ok( (context->Dr6 & 0xf) == 0, "B0...3 flags in Dr6 shouldn't be set\n");
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todo_wine{ ok( (context->Dr6 & 0x4000), "BS flag is not set in Dr6\n"); };
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}
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context->Dr6 = 0; /* clear status register */
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return ExceptionContinueExecution;
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}
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static const BYTE dummy_code[] = { 0x90, 0x90, 0xc3 }; /* nop, nop, ret */
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/* test int3 handling */
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static DWORD int3_handler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
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CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
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{
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ok( rec->ExceptionAddress == code_mem, "exception address not at: %p, but at %p\n",
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code_mem, rec->ExceptionAddress);
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todo_wine {
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ok( context->Eip == (DWORD)code_mem, "eip not at: %p, but at %#x\n", code_mem, context->Eip);
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}
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if(context->Eip == (DWORD)code_mem) context->Eip++; /* skip breakpoint */
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return ExceptionContinueExecution;
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}
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static const BYTE int3_code[] = { 0xCC, 0xc3 }; /* int 3, ret */
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static void test_exceptions(void)
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{
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CONTEXT ctx;
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NTSTATUS res;
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pNtGetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtGetContextThread" );
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pNtSetContextThread = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtSetContextThread" );
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if (!pNtGetContextThread || !pNtSetContextThread)
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{
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trace( "NtGetContextThread/NtSetContextThread not found, skipping tests\n" );
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|
return;
|
|
}
|
|
|
|
/* test handling of debug registers */
|
|
run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code));
|
|
|
|
ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
|
|
res = pNtGetContextThread(GetCurrentThread(), &ctx);
|
|
ok (res == STATUS_SUCCESS,"NtGetContextThread failed with %x\n", res);
|
|
ok(ctx.Dr0 == 0x42424242,"failed to set debugregister 0 to 0x42424242, got %x\n", ctx.Dr0);
|
|
ok(ctx.Dr7 == 0x155,"failed to set debugregister 7 to 0x155, got %x\n", ctx.Dr7);
|
|
|
|
/* test single stepping behavior */
|
|
got_exception = 0;
|
|
run_exception_test(single_step_handler, NULL, &single_stepcode, sizeof(single_stepcode));
|
|
ok(got_exception == 3, "expected 3 single step exceptions, got %d\n", got_exception);
|
|
|
|
/* test alignment exceptions */
|
|
got_exception = 0;
|
|
run_exception_test(align_check_handler, NULL, align_check_code, sizeof(align_check_code));
|
|
ok(got_exception == 0, "got %d alignment faults, expected 0\n", got_exception);
|
|
|
|
/* test single stepping over hardware breakpoint */
|
|
memset(&ctx, 0, sizeof(ctx));
|
|
ctx.Dr0 = (DWORD) code_mem; /* set hw bp on first nop */
|
|
ctx.Dr7 = 3;
|
|
ctx.ContextFlags = CONTEXT_DEBUG_REGISTERS;
|
|
res = pNtSetContextThread( GetCurrentThread(), &ctx);
|
|
ok( res == STATUS_SUCCESS, "NtSetContextThread faild with %x\n", res);
|
|
|
|
got_exception = 0;
|
|
run_exception_test(bpx_handler, NULL, dummy_code, sizeof(dummy_code));
|
|
ok( got_exception == 4,"expected 4 exceptions, got %d\n", got_exception);
|
|
|
|
/* test int3 handling */
|
|
run_exception_test(int3_handler, NULL, int3_code, sizeof(int3_code));
|
|
}
|
|
|
|
#endif /* __i386__ */
|
|
|
|
START_TEST(exception)
|
|
{
|
|
#ifdef __i386__
|
|
pNtCurrentTeb = (void *)GetProcAddress( GetModuleHandleA("ntdll.dll"), "NtCurrentTeb" );
|
|
if (!pNtCurrentTeb)
|
|
{
|
|
trace( "NtCurrentTeb not found, skipping tests\n" );
|
|
return;
|
|
}
|
|
|
|
/* 1024 byte should be sufficient */
|
|
code_mem = VirtualAlloc(NULL, 1024, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
|
|
if(!code_mem) {
|
|
trace("VirtualAlloc failed\n");
|
|
return;
|
|
}
|
|
test_prot_fault();
|
|
test_exceptions();
|
|
|
|
VirtualFree(code_mem, 1024, MEM_RELEASE);
|
|
#endif
|
|
}
|