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PE ARM: jump IAT arm code

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This commit is contained in:
Timo VJ Lahde 2010-04-19 15:50:22 +03:00
parent 83b0bd3095
commit 2cb1fd6a10
1 changed files with 13 additions and 2 deletions
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15
tccpe.c
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@ -1244,10 +1244,16 @@ static int pe_check_symbols(struct pe_info *pe)
offset = text_section->data_offset; offset = text_section->data_offset;
/* add the 'jmp IAT[x]' instruction */ /* add the 'jmp IAT[x]' instruction */
#ifdef TCC_TARGET_ARM
p = section_ptr_add(text_section, 8+4); // room for code and address
(*(DWORD*)(p)) = 0xE59FC000; // arm code ldr ip, [pc] ; PC+8+0 = 0001xxxx
(*(DWORD*)(p+2)) = 0xE59CF000; // arm code ldr pc, [ip]
#else
p = section_ptr_add(text_section, 8); p = section_ptr_add(text_section, 8);
*p = 0x25FF; *p = 0x25FF;
#ifdef TCC_TARGET_X86_64 #ifdef TCC_TARGET_X86_64
*(DWORD*)(p+1) = (DWORD)-4; *(DWORD*)(p+1) = (DWORD)-4;
#endif
#endif #endif
/* add a helper symbol, will be patched later in /* add a helper symbol, will be patched later in
pe_build_imports */ pe_build_imports */
@ -1256,8 +1262,13 @@ static int pe_check_symbols(struct pe_info *pe)
symtab_section, 0, sizeof(DWORD), symtab_section, 0, sizeof(DWORD),
ELFW_ST_INFO(STB_GLOBAL, STT_OBJECT), ELFW_ST_INFO(STB_GLOBAL, STT_OBJECT),
0, SHN_UNDEF, buffer); 0, SHN_UNDEF, buffer);
#ifdef TCC_TARGET_ARM
put_elf_reloc(symtab_section, text_section,
offset + 8, R_XXX_THUNKFIX, is->iat_index); // offset to IAT position
#else
put_elf_reloc(symtab_section, text_section, put_elf_reloc(symtab_section, text_section,
offset + 2, R_XXX_THUNKFIX, is->iat_index); offset + 2, R_XXX_THUNKFIX, is->iat_index);
#endif
is->thk_offset = offset; is->thk_offset = offset;
} }
@ -1822,9 +1833,9 @@ ST_FUNC int pe_output_file(TCCState * s1, const char *filename)
pe.subsystem = s1->pe_subsystem; pe.subsystem = s1->pe_subsystem;
else else
#if defined(TCC_TARGET_ARM) #if defined(TCC_TARGET_ARM)
pe.subsystem = 3;
#else
pe.subsystem = 9; pe.subsystem = 9;
#else
pe.subsystem = 3;
#endif #endif
/* set default file/section alignment */ /* set default file/section alignment */
if (pe.subsystem == 1) { if (pe.subsystem == 1) {