Linker assigns improper LMA to a section (using AT>) - linker

Question

I have a simple asm file with 3 sections:
.code 32
.section sec1
MOV R3, #10
.section sec2
MOV R1, #10
.section sec3
MOV R2, #10
.end
And a linker script:
MEMORY
{
ram : ORIGIN = 0x00200000, LENGTH = 1K
rom : ORIGIN = 0x00100000, LENGTH = 1K
}
SECTIONS
{
.text :
{
*(.glue_7t)
*(.glue_7)
*(.text)
}>rom
.sec1 :
{
*(sec1)
}>rom
.sec2 :
{
_ram_start = .;
*(sec2)
}>ram AT> rom
.sec3 :
{
*(sec3)
}>ram AT> rom
.data :
{
*(.data)
}>ram
.bss :
{
*(.bss)
}>ram
}
I assume that .sec2 should have VMA address set to ram's origin, but the LMA should be the address after .sec1, but objdump gives me:
test2.o: file format elf32-littlearm
Sections:
Idx Name Size VMA LMA File off Algn
0 .sec1 00000004 00100000 00100000 00000034 2**0
CONTENTS, READONLY
1 .sec2 00000004 00200000 00200000 00000038 2**0
CONTENTS, READONLY
2 .sec3 00000004 00200004 00200004 0000003c 2**0
CONTENTS, READONLY
Why is the .sec2 LMA set to ram?

Answer 1

It turns out that my sections from the .s file were not allocatable. That's why the LMA was wrong. If the sections won't be allocated, the LMA can be the same as VMA. I've found it out while playing with objcopy - the output binary file was always empty. The asm file should look like this:
.code 32
.section sec1, "a"
MOV R3, #10
.section sec2, "a"
MOV R1, #10
.section sec3, "a"
MOV R2, #10
.end
Normally the code would go to the .text section, which is allocatable by default. After adding "a" the linker produces proper LMA addresses.