45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
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#include "elf.h"
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#include <magenta/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define LD_NAME "ld64.so"
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#define LD_IMAGE_BASE_OFFSET 1024
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extern char _DYNAMIC[];
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extern char _ld_image_base[];
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extern char _ld_image_limit[];
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struct elf_image *get_self(void)
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{
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struct elf_image *self = malloc(sizeof *self);
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memset(self, 0x0, sizeof *self);
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snprintf(
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self->e_leaf.l_name,
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sizeof self->e_leaf.l_name,
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"%s",
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LD_NAME);
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kern_config_get(
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KERN_CFG_PAGE_SIZE,
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&self->e_page_size,
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sizeof self->e_page_size);
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self->e_base = (virt_addr_t)_ld_image_base - LD_IMAGE_BASE_OFFSET;
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self->e_length = (virt_addr_t)_ld_image_limit - self->e_base;
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if (self->e_length & (self->e_page_size - 1)) {
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self->e_length &= ~(self->e_page_size - 1);
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self->e_length += self->e_page_size;
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}
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self->e_dynamic.p_type = PT_DYNAMIC;
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self->e_dynamic.p_align = 8;
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self->e_dynamic.p_memsz = self->e_dynamic.p_filesz = (size_t)-1;
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self->e_dynamic.p_vaddr = (virt_addr_t)_DYNAMIC - self->e_base;
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elf_image_parse_dynamic(self);
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return self;
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}
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