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ntdll: Implement IMAGE_REL_BASED_THUMB_MOV32 relocation on ARM.

This commit is contained in:
André Hentschel 2013-01-20 18:02:10 +01:00 committed by Alexandre Julliard
parent f8aabe2247
commit 0993f8bb7b
2 changed files with 40 additions and 0 deletions
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38
dlls/ntdll/loader.c
View File

@ -2175,6 +2175,44 @@ IMAGE_BASE_RELOCATION * WINAPI LdrProcessRelocationBlock( void *page, UINT count
case IMAGE_REL_BASED_DIR64:
*(INT_PTR *)((char *)page + offset) += delta;
break;
#elif defined(__arm__)
case IMAGE_REL_BASED_THUMB_MOV32:
{
DWORD inst = *(INT_PTR *)((char *)page + offset);
DWORD imm16 = ((inst << 1) & 0x0800) + ((inst << 12) & 0xf000) +
((inst >> 20) & 0x0700) + ((inst >> 16) & 0x000f);
if ((inst & 0x8000fbf0) != 0x0000f240)
ERR("wrong Thumb2 instruction %08x, expected MOVW\n", inst);
imm16 += LOWORD(delta);
if (imm16 > 0xffff)
ERR("resulting immediate value won't fit: %08x\n", imm16);
*(INT_PTR *)((char *)page + offset) = (inst & 0x8f00fbf0) + ((imm16 >> 1) & 0x0400) +
((imm16 >> 12) & 0x000f) +
((imm16 << 20) & 0x70000000) +
((imm16 << 16) & 0x0f0000);
if (delta > 0xffff)
{
inst = *(INT_PTR *)((char *)page + offset + 4);
imm16 = ((inst << 1) & 0x0800) + ((inst << 12) & 0xf000) +
((inst >> 20) & 0x0700) + ((inst >> 16) & 0x000f);
if ((inst & 0x8000fbf0) != 0x0000f2c0)
ERR("wrong Thumb2 instruction %08x, expected MOVT\n", inst);
imm16 += HIWORD(delta);
if (imm16 > 0xffff)
ERR("resulting immediate value won't fit: %08x\n", imm16);
*(INT_PTR *)((char *)page + offset + 4) = (inst & 0x8f00fbf0) +
((imm16 >> 1) & 0x0400) +
((imm16 >> 12) & 0x000f) +
((imm16 << 20) & 0x70000000) +
((imm16 << 16) & 0x0f0000);
}
}
break;
#endif
default:
FIXME("Unknown/unsupported fixup type %x.\n", type);

2
include/winnt.h
View File

@ -3101,9 +3101,11 @@ typedef struct _IMAGE_RELOCATION
#define IMAGE_REL_BASED_HIGHADJ 4
#define IMAGE_REL_BASED_MIPS_JMPADDR 5
#define IMAGE_REL_BASED_ARM_MOV32A 5 /* yes, 5 too */
#define IMAGE_REL_BASED_ARM_MOV32 5 /* yes, 5 too */
#define IMAGE_REL_BASED_SECTION 6
#define IMAGE_REL_BASED_REL 7
#define IMAGE_REL_BASED_ARM_MOV32T 7 /* yes, 7 too */
#define IMAGE_REL_BASED_THUMB_MOV32 7 /* yes, 7 too */
#define IMAGE_REL_BASED_MIPS_JMPADDR16 9
#define IMAGE_REL_BASED_IA64_IMM64 9 /* yes, 9 too */
#define IMAGE_REL_BASED_DIR64 10