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JNI_OnLoad is a pre-DT_INIT in a shared library.

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This commit is contained in:
John Reiser
2013-10-26 09:51:25 -07:00
parent 45d2adeb9c
commit caf9af7ae4
2 changed files with 192 additions and 84 deletions
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src/p_lx_elf.h
+15 -7
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@@ -65,9 +65,15 @@ protected:
//virtual void const *elf_find_dynamic(unsigned) const = 0;
virtual upx_uint64_t elf_unsigned_dynamic(unsigned) const = 0;
static unsigned elf_hash(char const *) /*const*/;
static unsigned gnu_hash(char const *) /*const*/;
protected:
unsigned e_type;
unsigned e_phnum; /* Program header table entry count */
unsigned e_shnum;
unsigned e_phoff;
unsigned e_shoff;
char *file_image; // if ET_DYN investigation
char const *dynstr; // from DT_STRTAB
@@ -81,6 +87,7 @@ protected:
unsigned hatch_off; // file offset of escape hatch
upx_uint64_t load_va; // PT_LOAD[0].p_vaddr
upx_uint64_t xct_va; // minimum SHT_EXECINSTR virtual address
upx_uint64_t jni_onload_va; // runtime &JNI_OnLoad
unsigned short e_machine;
unsigned char ei_class;
@@ -100,6 +107,7 @@ public:
PackLinuxElf32(InputFile *f);
virtual ~PackLinuxElf32();
protected:
virtual void PackLinuxElf32help1(InputFile *f);
virtual int checkEhdr(Elf32_Ehdr const *ehdr) const;
virtual bool canPack();
@@ -134,8 +142,6 @@ protected:
unsigned const e_phnum);
virtual off_t getbase(const Elf32_Phdr *phdr, int e_phnum) const;
static unsigned elf_hash(char const *) /*const*/;
static unsigned gnu_hash(char const *) /*const*/;
virtual Elf32_Sym const *elf_lookup(char const *) const;
virtual unsigned elf_get_offset_from_address(unsigned) const;
Elf32_Shdr const *elf_find_section_name(char const *) const;
@@ -156,8 +162,8 @@ protected:
unsigned int const *hashtab; // from DT_HASH
unsigned int const *gashtab; // from DT_GNU_HASH
Elf32_Sym const *dynsym; // from DT_SYMTAB
Elf32_Sym const *jni_onload_sym;
char const *shstrtab; // via Elf32_Shdr
int n_elf_shnum; // via e_shnum
Elf32_Shdr const *sec_strndx;
Elf32_Shdr const *sec_dynsym;
@@ -224,6 +230,7 @@ public:
/*virtual void buildLoader(const Filter *);*/
protected:
virtual void PackLinuxElf64help1(InputFile *f);
virtual int checkEhdr(Elf64_Ehdr const *ehdr) const;
virtual void pack1(OutputFile *, Filter &); // generate executable header
@@ -250,6 +257,7 @@ protected:
virtual unsigned find_LOAD_gap(Elf64_Phdr const *const phdri, unsigned const k,
unsigned const e_phnum);
virtual Elf64_Sym const *elf_lookup(char const *) const;
virtual upx_uint64_t elf_get_offset_from_address(upx_uint64_t) const;
Elf64_Shdr const *elf_find_section_name(char const *) const;
Elf64_Shdr const *elf_find_section_type(unsigned) const;
@@ -269,8 +277,8 @@ protected:
unsigned int const *hashtab; // from DT_HASH
unsigned int const *gashtab; // from DT_GNU_HASH
Elf64_Sym const *dynsym; // from DT_SYMTAB
Elf64_Sym const *jni_onload_sym;
char const *shstrtab; // via Elf64_Shdr
int n_elf_shnum; // via e_shnum
Elf64_Shdr const *sec_strndx;
Elf64_Shdr const *sec_dynsym;
@@ -326,7 +334,7 @@ class PackLinuxElf32Be : public PackLinuxElf32
protected:
PackLinuxElf32Be(InputFile *f) : super(f) {
bele = &N_BELE_RTP::be_policy;
e_phnum = get_te16(&ehdri.e_phnum);
PackLinuxElf32help1(f);
}
};
@@ -336,7 +344,7 @@ class PackLinuxElf32Le : public PackLinuxElf32
protected:
PackLinuxElf32Le(InputFile *f) : super(f) {
bele = &N_BELE_RTP::le_policy;
e_phnum = get_te16(&ehdri.e_phnum);
PackLinuxElf32help1(f);
}
};
@@ -346,7 +354,7 @@ class PackLinuxElf64Le : public PackLinuxElf64
protected:
PackLinuxElf64Le(InputFile *f) : super(f) {
bele = &N_BELE_RTP::le_policy;
e_phnum = get_te16(&ehdri.e_phnum);
PackLinuxElf64help1(f);
}
};