int coreCheck(void* image)
{
if (!elfCheck(image))
return -1;
Elf32_Ehdr *elfHeader = (Elf32_Ehdr*) image;
if (elfHeader->e_entry < 0xC0000000)
return -2;
Elf32_Off address = elfHeader->e_phoff;
if (address == 0)
return 0;
void *programHeader = (void*)(((unsigned long)elfHeader) +
((unsigned long)address));
void *thisHeader = NULL;
int noHdrs = elfHeader->e_phnum;
int hdrSize = elfHeader->e_phentsize;
int i = 0;
for (thisHeader = programHeader; i < noHdrs; i++)
{
Elf32_Phdr* hdr = (Elf32_Phdr*)thisHeader;
if (*(int*)(hdr->p_offset+(unsigned int) image) == 0xC0DEBABE)
return 0;
thisHeader+=hdrSize;
}
return 3;
}
/*
* Run the elf image passed on to this function. Shouldn't return at all
* but just in case it does, the return types are:
* 0 for failure
* 1 for success
*/
int elfExec(void* image)
{
if (elfCheck(image))
{
Elf32_Ehdr *elfHeader = (Elf32_Ehdr*) image;
Elf32_Off address = elfHeader->e_phoff;
if (address == 0)
return 0;
void *programHeader = (void*)(((unsigned long)elfHeader) +
((unsigned long)address));
void *thisHeader = NULL;
int noHdrs = elfHeader->e_phnum;
int hdrSize = elfHeader->e_phentsize;
int i = 0;
printf("Program header\n");
for (thisHeader = programHeader; i < noHdrs; i++)
{
Elf32_Phdr* hdr = (Elf32_Phdr*)thisHeader;
printf("Type:\t0x%X\tOffset:\t0x%X\nvaddr:\t0x%X\tSize:"
"\t0x%X\nAlign:\t"
"0x%X\tFlags:\t0x%X\n\n",
hdr->p_type, hdr->p_offset, hdr->p_vaddr,
hdr->p_memsz, hdr->p_align, hdr->p_flags);
thisHeader+=hdrSize;
}
#ifdef ELFDBG
int j;
for (j = 0; j < 0x1FFFFFFF; j++);
#endif
Elf32_Off sectionAddress = elfHeader->e_shoff;
if (address != 0 && FALSE)
{
void *sectionHeader = (void*)(((unsigned long)elfHeader)
+ ((unsigned long)sectionAddress));
void *thisSection = NULL;
// int noSHdrs = elfHeader->e_shnum;
// int shdrSize = elfHeader->e_shentsize;
i = 0;
printf("Section header\n");
for (thisSection = sectionHeader; i < noHdrs; i++)
{
Elf32_Shdr* hdr = (Elf32_Shdr*)thisSection;
printf("Type:\t0x%X\tOffset:\t0x%X\nAddr:\t0x%X"
"\tSize:\t0x%X\nAlign:\t"
"0x%X\tFlags:\t0x%X\nName:\t0x%X\n\n",
hdr->sh_type, hdr->sh_offset, hdr->sh_addr,
hdr->sh_size, hdr->sh_addralign,
hdr->sh_flags, hdr->sh_name);
#ifdef ELFDBG
for (j = 0; j < 0xfffffff; j++);
#endif
}
}
}
return 1;
}
/*****************************************************************************
DISCRIPTION : ELFロード
ARGUMENT : pElfHead = ELF構造体
RETURN : 0 = 正常終了
: 0以外 = 異常終了
NOTE : -
UPDATED : 2013-09-03
*****************************************************************************/
char* elfLoad(char* pcBuf)
{
ELF_HEAD* pElfHead = (ELF_HEAD*)pcBuf;
int16 iRet;
if((iRet = elfCheck(pElfHead)) < 0){
DPUTS((uint08*)"elfCheck() error!! > ");
DPHEX(iRet, 8, 1);
DPUTS((uint08*)"\n");
return NULL;
}
if((iRet = elfLoadProgram(pElfHead)) < 0){
DPUTS((uint08*)"elfLoadProgram() error!!\n");
DPHEX(iRet, 8, 1);
DPUTS((uint08*)"\n");
return NULL;
}
return (char*)pElfHead->lEntryPoint;
}
