No relocation info when making an aarch64 flat binary, but works for x64

I have a very small program that should produce a data relocation:

#![no_std]
#![no_main]

#[no_mangle]
#[link_section = ".TEST"]
pub static TEST: &str = "TEST";

#[panic_handler]
fn panic_handler(_: &core::panic::PanicInfo) -> ! { loop {} }

There should be a relocation entry that makes the exported fat pointer TEST point to the string literal data. The .cargo/config.toml I use is:

[target.x86_64-unknown-none]
rustflags = ["-C", "link-args=--oformat binary -T map.ld -Map target/x64.txt"]

[target.aarch64-unknown-none]
rustflags = ["-C", "link-args=--oformat binary -T map.ld -Map target/aarch64.txt"]

And the linker script is:

SECTIONS {
    data 0 : {
        KEEP(*(*.TEST))
        *(.rodata*)
    }
    reloc : { *(.rel*) }
    dynamic : { *(.dynamic) }
}

When building with cargo build --target x86_64-unknown-none --release, the output map is:

             VMA              LMA     Size Align Out     In      Symbol
               0                0       14     8 data
               0                0       10     8         D:\reloc-test\target\x86_64-unknown-none\release\deps\reloc_test-8849a06c43798340.reloc_test.5fe8bd3830097974-cgu.0.rcgu.o:(.TEST)
               0                0       10     1                 TEST
              10               10        4     1         <internal>:(.rodata.cst4)
              18               18       18     8 reloc
              18               18       18     8         <internal>:(.rela.dyn)
              30               30       18     8 .dynsym
              30               30       18     8         <internal>:(.dynsym)
              48               48       1c     8 .gnu.hash
              48               48       1c     8         <internal>:(.gnu.hash)
              64               64       10     4 .hash
              64               64       10     4         <internal>:(.hash)
              74               74        1     1 .dynstr
              74               74        1     1         <internal>:(.dynstr)
              78               78       e0     8 dynamic
              78               78       e0     8         <internal>:(.dynamic)
               0                0       48     1 .comment
               0                0       48     1         <internal>:(.comment)
               0                0       60     8 .symtab
               0                0       60     8         <internal>:(.symtab)
               0                0       57     1 .shstrtab
               0                0       57     1         <internal>:(.shstrtab)
               0                0       31     1 .strtab
               0                0       31     1         <internal>:(.strtab)

And by inspecting the output binary, I can confirm that reloc contains a single R_X86_64_RELATIVE entry that makes TEST point to .rodata.cst4, which is expected.
But when building with cargo build --target aarch64-unknown-none --release, the output map is:

             VMA              LMA     Size Align Out     In      Symbol
               0                0       14     8 data
               0                0       10     8         D:\reloc-test\target\aarch64-unknown-none\release\deps\reloc_test-4ee72db71c31bd12.reloc_test.7a922d489d1080d8-cgu.0.rcgu.o:(.TEST)
               0                0        0     1                 $d.2
               0                0       10     1                 TEST
              10               10        4     1         <internal>:(.rodata.cst4)
               0                0       48     1 .comment
               0                0       48     1         <internal>:(.comment)
               0                0       90     8 .symtab
               0                0       90     8         <internal>:(.symtab)
               0                0       29     1 .shstrtab
               0                0       29     1         <internal>:(.shstrtab)
               0                0       37     1 .strtab
               0                0       37     1         <internal>:(.strtab)

The dynamic and relocation sections are simply not there. Is this expected or a bug? Is there any way to make the sections appear?