110 lines
2.9 KiB
C
Executable File
110 lines
2.9 KiB
C
Executable File
#include "mm_aspace.h"
|
|
#include <rtthread.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <elf.h>
|
|
#ifdef ARCH_MM_MMU
|
|
#include <mmu.h>
|
|
#include <page.h>
|
|
#endif
|
|
|
|
typedef struct
|
|
{
|
|
Elf64_Word st_name;
|
|
Elf64_Addr st_value;
|
|
Elf64_Word st_size;
|
|
unsigned char st_info;
|
|
unsigned char st_other;
|
|
Elf64_Half st_shndx;
|
|
} Elf64_sym;
|
|
|
|
#ifdef ARCH_MM_MMU
|
|
void arch_elf_reloc(rt_aspace_t aspace, void *text_start, void *rel_dyn_start, size_t rel_dyn_size, void *got_start, size_t got_size, Elf64_sym *dynsym)
|
|
{
|
|
size_t rel_off;
|
|
void* addr;
|
|
|
|
if (rel_dyn_size && !dynsym)
|
|
{
|
|
return;
|
|
}
|
|
for (rel_off = 0; rel_off < rel_dyn_size; rel_off += 8)
|
|
{
|
|
uint32_t v1, v2;
|
|
|
|
addr = rt_hw_mmu_v2p(aspace, (void *)(((rt_size_t)rel_dyn_start) + rel_off));
|
|
memcpy(&v1, addr, 4);
|
|
addr = rt_hw_mmu_v2p(aspace, (void *)(((rt_size_t)rel_dyn_start) + rel_off + 4));
|
|
memcpy(&v2, addr, 4);
|
|
|
|
addr = rt_hw_mmu_v2p(aspace, (void *)((rt_size_t)text_start + v1));
|
|
if ((v2 & 0xff) == R_ARM_RELATIVE)
|
|
{
|
|
*(rt_size_t*)addr += (rt_size_t)text_start;
|
|
}
|
|
else if ((v2 & 0xff) == R_ARM_ABS32)
|
|
{
|
|
uint32_t t;
|
|
t = (v2 >> 8);
|
|
if (t) /* 0 is UDF */
|
|
{
|
|
*(rt_size_t*)addr = (((rt_size_t)text_start) + dynsym[t].st_value);
|
|
}
|
|
}
|
|
}
|
|
/* modify got */
|
|
if (got_size)
|
|
{
|
|
uint32_t *got_item = (uint32_t*)got_start;
|
|
|
|
for (rel_off = 0; rel_off < got_size; rel_off += 4, got_item++)
|
|
{
|
|
addr = rt_hw_mmu_v2p(aspace, got_item);
|
|
*(rt_size_t *)addr += (rt_size_t)text_start;
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
|
|
void arch_elf_reloc(void *text_start, void *rel_dyn_start, size_t rel_dyn_size, void *got_start, size_t got_size, Elf64_sym *dynsym)
|
|
{
|
|
size_t rel_off;
|
|
|
|
if (rel_dyn_size && !dynsym)
|
|
{
|
|
return;
|
|
}
|
|
for (rel_off = 0; rel_off < rel_dyn_size; rel_off += 8)
|
|
{
|
|
uint32_t v1, v2;
|
|
|
|
memcpy(&v1, ((rt_uint8_t *)rel_dyn_start) + rel_off, 4);
|
|
memcpy(&v2, ((rt_uint8_t *)rel_dyn_start) + rel_off + 4, 4);
|
|
|
|
if ((v2 & 0xff) == R_ARM_RELATIVE)
|
|
{
|
|
*(uint32_t*)(((rt_size_t)text_start) + v1) += (uint32_t)text_start;
|
|
}
|
|
else if ((v2 & 0xff) == R_ARM_ABS32)
|
|
{
|
|
uint32_t t;
|
|
t = (v2 >> 8);
|
|
if (t) /* 0 is UDF */
|
|
{
|
|
*(uint32_t*)(((rt_size_t)text_start) + v1) = (uint32_t)(((rt_size_t)text_start) + dynsym[t].st_value);
|
|
}
|
|
}
|
|
}
|
|
/* modify got */
|
|
if (got_size)
|
|
{
|
|
uint32_t *got_item = (uint32_t*)got_start;
|
|
|
|
for (rel_off = 0; rel_off < got_size; rel_off += 4, got_item++)
|
|
{
|
|
*got_item += (uint32_t)text_start;
|
|
}
|
|
}
|
|
}
|
|
#endif
|