Linker moves section to where it should not - c

Question

I have this linker script for my elf executable:
ENTRY(_start)
SECTIONS
{
. = 0x500;
.mboot BLOCK(4K) : ALIGN(4K)
{
*(.mboot)
}
. = 0x7E00;
.ap_stack BLOCK(48K) : ALIGN(4K)
{
*(.ap_stack)
}
.mp_entry BLOCK(4K) : ALIGN(4K)
{
*(.mp_entry)
}
_mp_entry_end = .;
. = 1M;
.init BLOCK(4K) : ALIGN(4K)
{
*(.init)
}
_init_end = .;
. = 0xFFFFFFFF80000000 + _init_end;
.text : AT(ADDR(.text) - 0xFFFFFFFF80000000)
{
_code = .;
*(.text)
*(.rodata*)
*(.stack)
. = ALIGN(4096);
}
.data : AT(ADDR(.data) - 0xFFFFFFFF80000000)
{
_data = .;
*(.data)
. = ALIGN(4096);
}
.eh_frame : AT(ADDR(.eh_frame) - 0xFFFFFFFF80000000)
{
_ehframe = .;
*(.eh_frame)
. = ALIGN(4096);
}
.bss : AT(ADDR(.bss) - 0xFFFFFFFF80000000)
{
_bss = .;
*(.bss)
*(.rodata)
*(COMMON)
. = ALIGN(4096);
}
_end = .;
/DISCARD/ :
{
*(.comment)
}
}
Which should place section .ap_stack at physical/virtual address 0x8000. In assembly, I have:
[BITS 32]
section .ap_stack, nobits
align 16
ap_stack:
resb 0x48000
ap_stack_top:
which should make an empty space at that point, however, if I check final elf, I get:
Idx Name Size VMA LMA File off Algn
0 .mboot 0000000c 0000000000001000 0000000000001000 00001000 2**12
CONTENTS, ALLOC, LOAD, READONLY, DATA
1 .mp_entry 00000001 000000000000c000 000000000000c000 00002000 2**12
CONTENTS, ALLOC, LOAD, READONLY, DATA
2 .init 00006054 0000000000100000 0000000000100000 00003000 2**12
CONTENTS, ALLOC, LOAD, READONLY, DATA
3 .text 0000efa0 ffffffff80106060 0000000000106060 00009060 2**5
CONTENTS, ALLOC, LOAD, READONLY, CODE
4 .data 00001000 ffffffff80115000 0000000000115000 00018000 2**5
CONTENTS, ALLOC, LOAD, DATA
5 .eh_frame 00002000 ffffffff80116000 0000000000116000 00019000 2**3
CONTENTS, ALLOC, LOAD, READONLY, DATA
6 .bss 00012000 ffffffff80118000 0000000000118000 0001b000 2**5
ALLOC
7 .stack, 00005000 ffffffff8012a000 000000000012a000 0001b000 2**4
ALLOC, READONLY
8 .ap_stack, 00048000 ffffffff8012f000 000000000012f000 0001b000 2**4
ALLOC, READONLY
9 .debug_info 000097b8 0000000000000000 0000000000000000 0001b000 2**0
CONTENTS, READONLY, DEBUGGING
10 .debug_abbrev 0000210d 0000000000000000 0000000000000000 000247b8 2**0
CONTENTS, READONLY, DEBUGGING
11 .debug_aranges 00000560 0000000000000000 0000000000000000 000268c5 2**0
CONTENTS, READONLY, DEBUGGING
12 .debug_line 000030e7 0000000000000000 0000000000000000 00026e25 2**0
CONTENTS, READONLY, DEBUGGING
13 .debug_str 000026a5 0000000000000000 0000000000000000 00029f0c 2**0
CONTENTS, READONLY, DEBUGGING
14 .debug_ranges 000001b0 0000000000000000 0000000000000000 0002c5b1 2**0
CONTENTS, READONLY, DEBUGGING
because linker has moved my ap_stack to be together with stack, which is definitely what I don't want. Any reason why and how can I stop this behavior?