ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ntdll: Add support for dynamically generated stub entry points on ARM.

This commit is contained in:
André Hentschel 2012-03-08 22:12:30 +01:00 committed by Alexandre Julliard
parent 58a50926eb
commit 33236819c8
1 changed files with 42 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
dlls/ntdll/loader.c
View File

@ -177,7 +177,7 @@ static inline BOOL call_dll_entry_point( DLLENTRYPROC proc, void *module,
#endif /* __i386__ */
#if defined(__i386__) || defined(__x86_64__)
#if defined(__i386__) || defined(__x86_64__) || defined(__arm__)
/*************************************************************************
* stub_entry_point
*
@ -209,6 +209,19 @@ struct stub
BYTE call; /* call stub_entry_point */
DWORD entry;
};
#elif defined(__arm__)
struct stub
{
BYTE ldr_r0[4]; /* ldr r0, $dll */
BYTE mov_pc_pc1[4]; /* mov pc,pc */
const char *dll;
BYTE ldr_r1[4]; /* ldr r1, $name */
BYTE mov_pc_pc2[4]; /* mov pc,pc */
const char *name;
BYTE mov_r2_lr[4]; /* mov r2, lr */
BYTE ldr_pc_pc[4]; /* ldr pc, [pc, #-4] */
const void* entry;
};
#else
struct stub
{
@ -253,6 +266,34 @@ static ULONG_PTR allocate_stub( const char *dll, const char *name )
stub->dll = dll;
stub->call = 0xe8; /* call stub_entry_point */
stub->entry = (BYTE *)stub_entry_point - (BYTE *)(&stub->entry + 1);
#elif defined(__arm__)
stub->ldr_r0[0] = 0x00; /* ldr r0, $dll */
stub->ldr_r0[1] = 0x00;
stub->ldr_r0[2] = 0x9f;
stub->ldr_r0[3] = 0xe5;
stub->mov_pc_pc1[0] = 0x0f; /* mov pc,pc */
stub->mov_pc_pc1[1] = 0xf0;
stub->mov_pc_pc1[2] = 0xa0;
stub->mov_pc_pc1[3] = 0xe1;
stub->dll = dll;
stub->ldr_r1[0] = 0x00; /* ldr r1, $name */
stub->ldr_r1[1] = 0x10;
stub->ldr_r1[2] = 0x9f;
stub->ldr_r1[3] = 0xe5;
stub->mov_pc_pc2[0] = 0x0f; /* mov pc,pc */
stub->mov_pc_pc2[1] = 0xf0;
stub->mov_pc_pc2[2] = 0xa0;
stub->mov_pc_pc2[3] = 0xe1;
stub->name = name;
stub->mov_r2_lr[0] = 0x0e; /* mov r2, lr */
stub->mov_r2_lr[1] = 0x20;
stub->mov_r2_lr[2] = 0xa0;
stub->mov_r2_lr[3] = 0xe1;
stub->ldr_pc_pc[0] = 0x04; /* ldr pc, [pc, #-4] */
stub->ldr_pc_pc[1] = 0xf0;
stub->ldr_pc_pc[2] = 0x1f;
stub->ldr_pc_pc[3] = 0xe5;
stub->entry = stub_entry_point;
#else
stub->movq_rdi[0] = 0x48; /* movq $dll,%rdi */
stub->movq_rdi[1] = 0xbf;