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Merge pull request #4636 from chunyexixiaoyu/dev 

dlmodule can support riscv architecture
This commit is contained in:
Bernard Xiong 2021-04-29 14:36:45 +08:00 committed by GitHub
parent 1c58d9f359 2afca00787
commit 072899e137
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 236 additions and 45 deletions
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60
components/libc/libdl/arch/riscv.c Normal file
View File

@ -0,0 +1,60 @@
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021/04/23 chunyexixiaoyu first version
*/
#include "../dlmodule.h"
#include "../dlelf.h"
#if (__riscv_xlen == 64)
#define R_RISCV_NONE 0
#define R_RISCV_32 1
#define R_RISCV_64 2
#define R_RISCV_RELATIVE 3
#define R_RISCV_COPY 4
#define R_RISCV_JUMP_SLOT 5
#define R_RISCV_TLS_DTPMOD32 6
#define R_RISCV_TLS_DTPMOD64 7
#define R_RISCV_TLS_DTPREL32 8
#define R_RISCV_TLS_DTPREL64 9
#define R_RISCV_TLS_TPREL32 10
#define R_RISCV_TLS_TPREL64 11
int dlmodule_relocate(struct rt_dlmodule *module, Elf_Rel *rel, Elf_Addr sym_val)
{
Elf64_Addr *where, tmp;
Elf64_Sword addend, offset;
rt_uint64_t upper, lower, sign, j1, j2;
where = (Elf64_Addr *)((rt_uint8_t *)module->mem_space
+ rel->r_offset
- module->vstart_addr);
switch (ELF64_R_TYPE(rel->r_info))
{
case R_RISCV_NONE:
break;
case R_RISCV_64:
*where = (Elf64_Addr)(sym_val + rel->r_addend);
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_RISCV_64: %x -> %x\n",where, *where));
break;
case R_RISCV_RELATIVE:
*where = (Elf64_Addr)((rt_uint8_t *)module->mem_space - module->vstart_addr + rel->r_addend);
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_RISCV_RELATIVE: %x -> %x\n",where, *where));
break;
case R_RISCV_JUMP_SLOT:
*where = (Elf64_Addr)sym_val;
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_RISCV_JUMP_SLOT: %x -> %x\n",where, *where));
break;
default:
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("__riscv__ELF: invalid relocate TYPE %d\n", ELF64_R_TYPE(rel->r_info)));
return -1;
}
return 0;
}
#endif

104
components/libc/libdl/dlelf.c
View File

@ -6,6 +6,7 @@
* Change Logs:
* Date Author Notes
* 2018/08/29 Bernard first version
* 2021/04/23 chunyexixiaoyu distinguish 32-bit and 64-bit
*/
#include "dlmodule.h"
@ -18,8 +19,8 @@
rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_ptr)
{
rt_bool_t linked = RT_FALSE;
rt_uint32_t index, module_size = 0;
Elf32_Addr vstart_addr, vend_addr;
rt_ubase_t index, module_size = 0;
Elf_Addr vstart_addr, vend_addr;
rt_bool_t has_vstart;
RT_ASSERT(module_ptr != RT_NULL);
@ -53,7 +54,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
has_vstart = RT_TRUE;
if (vend_addr < vstart_addr)
{
rt_kprintf("invalid elf: segment %d: p_vaddr: %d, p_memsz: %d\n",
LOG_E("invalid elf: segment %d: p_vaddr: %d, p_memsz: %d\n",
index, phdr[index].p_vaddr, phdr[index].p_memsz);
return RT_NULL;
}
@ -62,7 +63,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
{
if (phdr[index].p_vaddr < vend_addr)
{
rt_kprintf("invalid elf: segment should be sorted and not overlapped\n");
LOG_E("invalid elf: segment should be sorted and not overlapped\n");
return RT_NULL;
}
if (phdr[index].p_vaddr > vend_addr + 16)
@ -74,7 +75,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
vend_addr = phdr[index].p_vaddr + phdr[index].p_memsz;
if (vend_addr < phdr[index].p_vaddr)
{
rt_kprintf("invalid elf: "
LOG_E("invalid elf: "
"segment %d address overflow\n", index);
return RT_NULL;
}
@ -85,7 +86,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
LOG_D("module size: %d, vstart_addr: 0x%p", module_size, vstart_addr);
if (module_size == 0)
{
rt_kprintf("Module: size error\n");
LOG_E("Module: size error\n");
return -RT_ERROR;
}
@ -96,7 +97,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
module->mem_space = rt_malloc(module_size);
if (module->mem_space == RT_NULL)
{
rt_kprintf("Module: allocate space failed.\n");
LOG_E("Module: allocate space failed.\n");
return -RT_ERROR;
}
module->mem_size = module_size;
@ -119,42 +120,49 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
/* handle relocation section */
for (index = 0; index < elf_module->e_shnum; index ++)
{
rt_uint32_t i, nr_reloc;
Elf32_Sym *symtab;
Elf32_Rel *rel;
rt_ubase_t i, nr_reloc;
Elf_Sym *symtab;
Elf_Rel *rel;
rt_uint8_t *strtab;
static rt_bool_t unsolved = RT_FALSE;
#if (defined(__arm__) || defined(__i386__) || (__riscv_xlen == 32))
if (!IS_REL(shdr[index]))
continue;
#elif (defined(__aarch64__) || defined(__x86_64__) || (__riscv_xlen == 64))
if (!IS_RELA(shdr[index]))
continue;
#endif
/* get relocate item */
rel = (Elf32_Rel *)((rt_uint8_t *)module_ptr + shdr[index].sh_offset);
rel = (Elf_Rel *)((rt_uint8_t *)module_ptr + shdr[index].sh_offset);
/* locate .rel.plt and .rel.dyn section */
symtab = (Elf32_Sym *)((rt_uint8_t *)module_ptr +
symtab = (Elf_Sym *)((rt_uint8_t *)module_ptr +
shdr[shdr[index].sh_link].sh_offset);
strtab = (rt_uint8_t *)module_ptr +
shdr[shdr[shdr[index].sh_link].sh_link].sh_offset;
nr_reloc = (rt_uint32_t)(shdr[index].sh_size / sizeof(Elf32_Rel));
nr_reloc = (rt_ubase_t)(shdr[index].sh_size / sizeof(Elf_Rel));
/* relocate every items */
for (i = 0; i < nr_reloc; i ++)
{
Elf32_Sym *sym = &symtab[ELF32_R_SYM(rel->r_info)];
#if (defined(__arm__) || defined(__i386__) || (__riscv_xlen == 32))
Elf_Sym *sym = &symtab[ELF32_R_SYM(rel->r_info)];
#elif (defined(__aarch64__) || defined(__x86_64__) || (__riscv_xlen == 64))
Elf_Sym *sym = &symtab[ELF64_R_SYM(rel->r_info)];
#endif
LOG_D("relocate symbol %s shndx %d", strtab + sym->st_name, sym->st_shndx);
if ((sym->st_shndx != SHT_NULL) ||(ELF_ST_BIND(sym->st_info) == STB_LOCAL))
{
Elf32_Addr addr;
Elf_Addr addr;
addr = (Elf32_Addr)(module->mem_space + sym->st_value - vstart_addr);
addr = (Elf_Addr)(module->mem_space + sym->st_value - vstart_addr);
dlmodule_relocate(module, rel, addr);
}
else if (!linked)
{
Elf32_Addr addr;
Elf_Addr addr;
LOG_D("relocate symbol: %s", strtab + sym->st_name);
/* need to resolve symbol in kernel symbol table */
@ -191,13 +199,13 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
if (index != elf_module->e_shnum)
{
int i, count = 0;
Elf32_Sym *symtab = RT_NULL;
Elf_Sym *symtab = RT_NULL;
rt_uint8_t *strtab = RT_NULL;
symtab = (Elf32_Sym *)((rt_uint8_t *)module_ptr + shdr[index].sh_offset);
symtab = (Elf_Sym *)((rt_uint8_t *)module_ptr + shdr[index].sh_offset);
strtab = (rt_uint8_t *)module_ptr + shdr[shdr[index].sh_link].sh_offset;
for (i = 0; i < shdr[index].sh_size / sizeof(Elf32_Sym); i++)
for (i = 0; i < shdr[index].sh_size / sizeof(Elf_Sym); i++)
{
if ((ELF_ST_BIND(symtab[i].st_info) == STB_GLOBAL) &&
(ELF_ST_TYPE(symtab[i].st_info) == STT_FUNC))
@ -207,7 +215,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
module->symtab = (struct rt_module_symtab *)rt_malloc
(count * sizeof(struct rt_module_symtab));
module->nsym = count;
for (i = 0, count = 0; i < shdr[index].sh_size / sizeof(Elf32_Sym); i++)
for (i = 0, count = 0; i < shdr[index].sh_size / sizeof(Elf_Sym); i++)
{
rt_size_t length;
@ -231,7 +239,7 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
rt_uint32_t flag = 0;
rt_uint16_t priority;
rt_uint32_t stacksize;
for (i = 0; i < shdr[index].sh_size / sizeof(Elf32_Sym); i++)
for (i = 0; i < shdr[index].sh_size / sizeof(Elf_Sym); i++)
{
if (((flag & 0x01) == 0) &&
(rt_strcmp((const char *)(strtab + symtab[i].st_name), "dlmodule_thread_priority") == 0))
@ -267,8 +275,8 @@ rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_pt
rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module_ptr)
{
rt_uint32_t index, rodata_addr = 0, bss_addr = 0, data_addr = 0;
rt_uint32_t module_addr = 0, module_size = 0;
rt_ubase_t index, rodata_addr = 0, bss_addr = 0, data_addr = 0;
rt_ubase_t module_addr = 0, module_size = 0;
rt_uint8_t *ptr, *strtab, *shstrab;
/* get the ELF image size */
@ -306,7 +314,7 @@ rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module
module->mem_space = rt_malloc(module_size);
if (module->mem_space == RT_NULL)
{
rt_kprintf("Module: allocate space failed.\n");
LOG_E("Module: allocate space failed.\n");
return -RT_ERROR;
}
module->mem_size = module_size;
@ -367,35 +375,45 @@ rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module
/* handle relocation section */
for (index = 0; index < elf_module->e_shnum; index ++)
{
rt_uint32_t i, nr_reloc;
Elf32_Sym *symtab;
Elf32_Rel *rel;
rt_ubase_t i, nr_reloc;
Elf_Sym *symtab;
Elf_Rel *rel;
#if (defined(__arm__) || defined(__i386__) || (__riscv_xlen == 32))
if (!IS_REL(shdr[index]))
continue;
#elif (defined(__aarch64__) || defined(__x86_64__) || (__riscv_xlen == 64))
if (!IS_RELA(shdr[index]))
continue;
#endif
/* get relocate item */
rel = (Elf32_Rel *)((rt_uint8_t *)module_ptr + shdr[index].sh_offset);
rel = (Elf_Rel *)((rt_uint8_t *)module_ptr + shdr[index].sh_offset);
/* locate .dynsym and .dynstr */
symtab = (Elf32_Sym *)((rt_uint8_t *)module_ptr +
symtab = (Elf_Sym *)((rt_uint8_t *)module_ptr +
shdr[shdr[index].sh_link].sh_offset);
strtab = (rt_uint8_t *)module_ptr +
shdr[shdr[shdr[index].sh_link].sh_link].sh_offset;
shstrab = (rt_uint8_t *)module_ptr +
shdr[elf_module->e_shstrndx].sh_offset;
nr_reloc = (rt_uint32_t)(shdr[index].sh_size / sizeof(Elf32_Rel));
nr_reloc = (rt_uint32_t)(shdr[index].sh_size / sizeof(Elf_Rel));
/* relocate every items */
for (i = 0; i < nr_reloc; i ++)
{
Elf32_Sym *sym = &symtab[ELF32_R_SYM(rel->r_info)];
#if (defined(__arm__) || defined(__i386__) || (__riscv_xlen == 32))
Elf_Sym *sym = &symtab[ELF32_R_SYM(rel->r_info)];
#elif (defined(__aarch64__) || defined(__x86_64__) || (__riscv_xlen == 64))
Elf_Sym *sym = &symtab[ELF64_R_SYM(rel->r_info)];
#endif
LOG_D("relocate symbol: %s", strtab + sym->st_name);
if (sym->st_shndx != STN_UNDEF)
{
Elf32_Addr addr = 0;
Elf_Addr addr = 0;
if ((ELF_ST_TYPE(sym->st_info) == STT_SECTION) ||
(ELF_ST_TYPE(sym->st_info) == STT_OBJECT))
@ -405,28 +423,28 @@ rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module
{
/* relocate rodata section */
LOG_D("rodata");
addr = (Elf32_Addr)(rodata_addr + sym->st_value);
addr = (Elf_Addr)(rodata_addr + sym->st_value);
}
else if (rt_strncmp((const char *)
(shstrab + shdr[sym->st_shndx].sh_name), ELF_BSS, 5) == 0)
{
/* relocate bss section */
LOG_D("bss");
addr = (Elf32_Addr)bss_addr + sym->st_value;
addr = (Elf_Addr)bss_addr + sym->st_value;
}
else if (rt_strncmp((const char *)(shstrab + shdr[sym->st_shndx].sh_name),
ELF_DATA, 6) == 0)
{
/* relocate data section */
LOG_D("data");
addr = (Elf32_Addr)data_addr + sym->st_value;
addr = (Elf_Addr)data_addr + sym->st_value;
}
if (addr != 0) dlmodule_relocate(module, rel, addr);
}
else if (ELF_ST_TYPE(sym->st_info) == STT_FUNC)
{
addr = (Elf32_Addr)((rt_uint8_t *) module->mem_space - module_addr + sym->st_value);
addr = (Elf_Addr)((rt_uint8_t *) module->mem_space - module_addr + sym->st_value);
/* relocate function */
dlmodule_relocate(module, rel, addr);
@ -436,14 +454,14 @@ rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module
{
/* relocate function */
dlmodule_relocate(module, rel,
(Elf32_Addr)((rt_uint8_t *)
(Elf_Addr)((rt_uint8_t *)
module->mem_space
- module_addr
+ sym->st_value));
}
else
{
Elf32_Addr addr;
Elf_Addr addr;
if (ELF32_R_TYPE(rel->r_info) != R_ARM_V4BX)
{
@ -451,7 +469,7 @@ rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module
/* need to resolve symbol in kernel symbol table */
addr = dlmodule_symbol_find((const char *)(strtab + sym->st_name));
if (addr != (Elf32_Addr)RT_NULL)
if (addr != (Elf_Addr)RT_NULL)
{
dlmodule_relocate(module, rel, addr);
LOG_D("symbol addr 0x%x", addr);
@ -462,7 +480,7 @@ rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module
}
else
{
addr = (Elf32_Addr)((rt_uint8_t *) module->mem_space - module_addr + sym->st_value);
addr = (Elf_Addr)((rt_uint8_t *) module->mem_space - module_addr + sym->st_value);
dlmodule_relocate(module, rel, addr);
}
}

115
components/libc/libdl/dlelf.h
View File

@ -6,6 +6,7 @@
* Change Logs:
* Date Author Notes
* 2018/08/29 Bernard first version
* 2021/04/23 chunyexixiaoyu distinguish 32-bit and 64-bit
*/
#ifndef DL_ELF_H__
@ -19,6 +20,21 @@ typedef rt_int32_t Elf32_Sword; /* Signed large integer */
typedef rt_uint32_t Elf32_Word; /* Unsigned large integer */
typedef rt_uint16_t Elf32_Half; /* Unsigned medium integer */
typedef rt_uint64_t Elf64_Addr;
typedef rt_uint16_t Elf64_Half;
typedef rt_int16_t Elf64_SHalf;
typedef rt_uint64_t Elf64_Off;
typedef rt_int32_t Elf64_Sword;
typedef rt_uint32_t Elf64_Word;
typedef rt_uint64_t Elf64_Xword;
typedef rt_int64_t Elf64_Sxword;
typedef uint16_t Elf64_Section;
/* e_ident[] magic number */
#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
#define ELFMAG1 'E' /* e_ident[EI_MAG1] */
@ -75,6 +91,25 @@ typedef struct elfhdr
header string table" entry offset */
} Elf32_Ehdr;
typedef struct elf64_hdr {
unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
Elf64_Half e_type; /* object file type */
Elf64_Half e_machine; /* machine */
Elf64_Word e_version; /* object file version */
Elf64_Addr e_entry; /* virtual entry point */
Elf64_Off e_phoff; /* program header table offset */
Elf64_Off e_shoff; /* section header table offset */
Elf64_Word e_flags; /* processor-specific flags */
Elf64_Half e_ehsize; /* ELF header size */
Elf64_Half e_phentsize; /* program header entry size */
Elf64_Half e_phnum; /* number of program header entries */
Elf64_Half e_shentsize; /* section header entry size */
Elf64_Half e_shnum; /* number of section header entries */
Elf64_Half e_shstrndx; /* section header table's "section
header string table" entry offset */
} Elf64_Ehdr;
/* Section Header */
typedef struct
{
@ -91,6 +126,21 @@ typedef struct
Elf32_Word sh_entsize; /* section entry size */
} Elf32_Shdr;
typedef struct
{
Elf64_Word sh_name; /* Section name (string tbl index) */
Elf64_Word sh_type; /* Section type */
Elf64_Xword sh_flags; /* Section flags */
Elf64_Addr sh_addr; /* Section virtual addr at execution */
Elf64_Off sh_offset; /* Section file offset */
Elf64_Xword sh_size; /* Section size in bytes */
Elf64_Word sh_link; /* Link to another section */
Elf64_Word sh_info; /* Additional section information */
Elf64_Xword sh_addralign; /* Section alignment */
Elf64_Xword sh_entsize; /* Entry size if section holds table */
} Elf64_Shdr;
/* Section names */
#define ELF_BSS ".bss" /* uninitialized data */
#define ELF_DATA ".data" /* initialized data */
@ -126,6 +176,19 @@ typedef struct elf32_sym
Elf32_Half st_shndx; /* section header index */
} Elf32_Sym;
typedef struct
{
Elf64_Word st_name; /* Symbol name (string tbl index) */
unsigned char st_info; /* Symbol type and binding */
unsigned char st_other; /* Symbol visibility */
Elf64_Section st_shndx; /* Section index */
Elf64_Addr st_value; /* Symbol value */
Elf64_Xword st_size; /* Symbol size */
} Elf64_Sym;
#define STB_LOCAL 0 /* BIND */
#define STB_GLOBAL 1
#define STB_WEAK 2
@ -160,6 +223,12 @@ typedef struct
Elf32_Word r_info; /* symbol table index and type */
} Elf32_Rel;
typedef struct
{
Elf64_Addr r_offset; /* Address */
Elf64_Xword r_info; /* Relocation type and symbol index */
} Elf64_Rel;
/* Relocation entry with explicit addend */
typedef struct
{
@ -168,11 +237,24 @@ typedef struct
Elf32_Sword r_addend;
} Elf32_Rela;
typedef struct
{
Elf64_Addr r_offset; /* Address */
Elf64_Xword r_info; /* Relocation type and symbol index */
Elf64_Sxword r_addend; /* Addend */
} Elf64_Rela;
/* Extract relocation info - r_info */
#define ELF32_R_SYM(i) ((i) >> 8)
#define ELF32_R_TYPE(i) ((unsigned char) (i))
#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
#define ELF64_R_SYM(i) ((i) >> 32)
#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
#define ELF64_R_INFO(sym,type) ((((Elf64_Xword) (sym)) << 32) + (type))
/*
* Relocation type for arm
*/
@ -219,6 +301,23 @@ typedef struct
Elf32_Word p_align; /* memory alignment */
} Elf32_Phdr;
typedef struct
{
Elf64_Word p_type; /* Segment type */
Elf64_Word p_flags; /* Segment flags */
Elf64_Off p_offset; /* Segment file offset */
Elf64_Addr p_vaddr; /* Segment virtual address */
Elf64_Addr p_paddr; /* Segment physical address */
Elf64_Xword p_filesz; /* Segment size in file */
Elf64_Xword p_memsz; /* Segment size in memory */
Elf64_Xword p_align; /* Segment alignment */
} Elf64_Phdr;
/* p_type */
#define PT_NULL 0
#define PT_LOAD 1
@ -273,13 +372,27 @@ typedef struct
#define IS_AX(s) ((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_EXECINSTR))
#define IS_AW(s) ((s.sh_flags & SHF_ALLOC) && (s.sh_flags & SHF_WRITE))
#if (defined(__arm__) || defined(__i386__) || (__riscv_xlen == 32))
#define elf_module ((Elf32_Ehdr *)module_ptr)
#define shdr ((Elf32_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff))
#define phdr ((Elf32_Phdr *)((rt_uint8_t *)module_ptr + elf_module->e_phoff))
typedef Elf32_Sym Elf_Sym;
typedef Elf32_Rel Elf_Rel;
typedef Elf32_Addr Elf_Addr;
#elif (defined(__aarch64__) || defined(__x86_64__) || (__riscv_xlen == 64))
#define elf_module ((Elf64_Ehdr *)module_ptr)
#define shdr ((Elf64_Shdr *)((rt_uint8_t *)module_ptr + elf_module->e_shoff))
#define phdr ((Elf64_Phdr *)((rt_uint8_t *)module_ptr + elf_module->e_phoff))
typedef Elf64_Sym Elf_Sym;
typedef Elf64_Rela Elf_Rel;
typedef Elf64_Addr Elf_Addr;
#endif
int dlmodule_relocate(struct rt_dlmodule *module, Elf_Rel *rel, Elf_Addr sym_val);
rt_err_t dlmodule_load_shared_object(struct rt_dlmodule* module, void *module_ptr);
rt_err_t dlmodule_load_relocated_object(struct rt_dlmodule* module, void *module_ptr);
int dlmodule_relocate(struct rt_dlmodule *module, Elf32_Rel *rel, Elf32_Addr sym_val);
#endif

2
components/libc/libdl/dlmodule.c
View File

@ -464,7 +464,7 @@ struct rt_dlmodule* dlmodule_load(const char* filename)
}
/* check ELF class */
if (elf_module->e_ident[EI_CLASS] != ELFCLASS32)
if ((elf_module->e_ident[EI_CLASS] != ELFCLASS32)&&(elf_module->e_ident[EI_CLASS] != ELFCLASS64))
{
rt_kprintf("Module: ELF class error\n");
goto __exit;