Created attachment 10092 [details]
Here is the file used for testing

For the z80-unknown-coff target ld produces a wrong output for call instructions, I'm sure it happens in ld because the object file generated by as does not have the error. This produces wrong executable code from well written z80 source code.

As an example:

start:
	ld A, 0
	add A, 5
	sub 4
	call loop
loop:
	jr loop

after assembling it with "z80-unknown-coff-as a.asm -o a.o -z80" and disassembling it with "z80-unknown-coff-objdump a.o -d" the output is the following:

a.o:     file format coff-z80


Disassembly of section .text:

00000000 <start>:
   0:	3e 00       	ld a,0x00
   2:	c6 05       	add a,0x05
   4:	d6 04       	sub 0x04
   6:	cd 09 00    	call 0x0009

00000009 <loop>:
   9:	18 fe       	jr 0x0009

which does not have any errors at all, but after linking it I got the following output:
    3E 00 C6 05 D6 04 CD 09 01 18 FE

instead of:
    3E 00 C6 05 D6 04 CD 09 00 18 FE

which is the correct output I should get.