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ELF shlib without DT_INIT: steal a DT_NULL from PT_DYNAMIC

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https://github.com/upx/upx/issues/191  [partial, not finished]
	modified:   p_lx_elf.cpp
	modified:   p_lx_elf.h
This commit is contained in:
John Reiser
2018-03-24 09:41:58 -07:00
parent c2b62359d5
commit 7a625a449a
2 changed files with 74 additions and 12 deletions
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src/p_lx_elf.h
+5
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@@ -94,6 +94,9 @@ protected:
unsigned char ei_data;
unsigned char ei_osabi;
char const *osabi_note;
unsigned upx_dt_init; // DT_INIT, DT_PREINIT_ARRAY, DT_INIT_ARRAY
static unsigned const DT_NUM = 34; // elf.h
unsigned dt_table[DT_NUM]; // 1+ index in PT_DYNAMIC
unsigned char const *buildid_data;
int o_elf_shnum; // num output Shdrs
@@ -152,6 +155,7 @@ protected:
Elf32_Shdr const *elf_find_section_name(char const *) const;
Elf32_Shdr const *elf_find_section_type(unsigned) const;
unsigned check_pt_dynamic(Elf32_Phdr const *);
void invert_pt_dynamic();
void const *elf_find_dynamic(unsigned) const;
Elf32_Dyn const *elf_has_dynamic(unsigned) const;
virtual upx_uint64_t elf_unsigned_dynamic(unsigned) const;
@@ -282,6 +286,7 @@ protected:
Elf64_Shdr const *elf_find_section_name(char const *) const;
Elf64_Shdr const *elf_find_section_type(unsigned) const;
upx_uint64_t check_pt_dynamic(Elf64_Phdr const *);
void invert_pt_dynamic();
void const *elf_find_dynamic(unsigned) const;
Elf64_Dyn const *elf_has_dynamic(unsigned) const;
virtual upx_uint64_t elf_unsigned_dynamic(unsigned) const;