ladybird/Kernel/linker.ld
Gunnar Beutner ac1455d3ba Kernel: Specify protection flags for ELF load headers
These are currently unused by the prekernel and ld used the same flags
by default - except for the .ksyms section which was marked as
read-write.
2021-07-20 15:12:19 +02:00

108 lines
2.3 KiB
Text

#include <AK/Platform.h>
ENTRY(init)
#if ARCH(I386)
# define KERNEL_BASE 0xc0000000
#else
# define KERNEL_BASE 0x2000000000
#endif
#define PF_X 0x1
#define PF_W 0x2
#define PF_R 0x4
KERNEL_VIRTUAL_BASE = KERNEL_BASE;
PHDRS
{
super_pages PT_LOAD FLAGS(PF_R | PF_W) ;
text PT_LOAD FLAGS(PF_R | PF_X) ;
data PT_LOAD FLAGS(PF_R | PF_W) ;
bss PT_LOAD FLAGS(PF_R | PF_W) ;
ksyms PT_LOAD FLAGS(PF_R) ;
}
SECTIONS
{
. = KERNEL_VIRTUAL_BASE + 0x00200000;
start_of_kernel_image = .;
.super_pages ALIGN(4K) (NOLOAD) : AT (ADDR(.super_pages) - KERNEL_VIRTUAL_BASE)
{
*(.super_pages)
} :super_pages
.text ALIGN(4K) : AT (ADDR(.text) - KERNEL_VIRTUAL_BASE)
{
start_of_kernel_text = .;
start_of_safemem_text = .;
KEEP(*(.text.safemem))
end_of_safemem_text = .;
start_of_safemem_atomic_text = .;
KEEP(*(.text.safemem.atomic))
end_of_safemem_atomic_text = .;
*(.text*)
} :text
.unmap_after_init ALIGN(4K) : AT (ADDR(.unmap_after_init) - KERNEL_VIRTUAL_BASE)
{
start_of_unmap_after_init = .;
*(.unmap_after_init*);
end_of_unmap_after_init = .;
end_of_kernel_text = .;
} :text
.rodata ALIGN(4K) : AT (ADDR(.rodata) - KERNEL_VIRTUAL_BASE)
{
start_heap_ctors = .;
*libkernel_heap.a:*(.ctors)
end_heap_ctors = .;
start_ctors = .;
*(.ctors)
end_ctors = .;
*(.rodata*)
} :data
.data ALIGN(4K) : AT (ADDR(.data) - KERNEL_VIRTUAL_BASE)
{
start_of_kernel_data = .;
*(.data*)
end_of_kernel_data = .;
} :data
.ro_after_init ALIGN(4K) (NOLOAD) : AT(ADDR(.ro_after_init) - KERNEL_VIRTUAL_BASE)
{
start_of_ro_after_init = .;
*(.ro_after_init);
end_of_ro_after_init = .;
} :data
.bss ALIGN(4K) (NOLOAD) : AT (ADDR(.bss) - KERNEL_VIRTUAL_BASE)
{
start_of_kernel_bss = .;
*(page_tables)
*(COMMON)
*(.bss)
end_of_kernel_bss = .;
. = ALIGN(4K);
*(.heap)
} :bss
.ksyms ALIGN(4K) : AT (ADDR(.ksyms) - KERNEL_VIRTUAL_BASE)
{
start_of_kernel_ksyms = .;
*(.kernel_symbols)
end_of_kernel_ksyms = .;
} :ksyms
end_of_kernel_image = .;
}