[z80-coff-ld] how can I use ld for creating an exe from z80-coff-as ?

[jseb <gmane2010 at finiderire dot com>]

Hello,

I've compiled this source file, using z80-coff-as.

~/z80-coff-as -als hello_world.asm -o hello_world.out

GAS LISTING hello_world.asm                     page 1


   1 0000 FE             db $fe
   2 0001 00C0 1AC0      dw debut,fin,debut
   2      00C0
   3
   4 0007 0000 0000      ORG $C000
   4      0000 0000
   4      0000 0000
   4      0000 0000
   4      0000 0000
   5
   6                    debut:
   7 c000 210D C0        LD HL,LABEL
   8 c003 7E            AFF: LD A,(HL)
   9 c004 23             INC HL
  10 c005 A7             AND A
  11 c006 C8             RET Z
  12 c007 CDA2 00        CALL $A2 ; HFDA4 ;CHPUT
  13 c00a 18F7           JR AFF
  14 c00c C9             RET
  15 c00d 5465 7374     LABEL: DEFB "Test chput",13,10,0
  15      2063 6870
  15      7574 0D0A
  15      00
  16                    fin:
  17                     END

GAS LISTING hello_world.asm                     page 2


DEFINED SYMBOLS
                            *ABS*:0000000000000000 fake
     hello_world.asm:6      .text:000000000000c000 debut
     hello_world.asm:16     .text:000000000000c01a fin
     hello_world.asm:15     .text:000000000000c00d LABEL
     hello_world.asm:8      .text:000000000000c003 AFF

NO UNDEFINED SYMBOLS


So, it gives me a COFF object files, and i don't want all those 
sections, as it's for using inside an 8 bit emulator (target is MSX 
machine).
I had success using «coff-z80-objcopy» with binary output, but i'd 
rather like using the linker instead.

I tried with:

~/test$ z80-coff-ld.bfd hello_world.out -o hello_world.msx

~/test$ hexdump hello_world.msx -C
00000000  fe 00 c1 1b c1 00 c1 00  00 00 00 00 00 00 00 00
  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
  |................|
*
0000c000  21 0d c1 7e 23 a7 c8 cd  a2 00 18 f7 c9 48 65 6c
  |!..~#........Hel|
0000c010  6c 6f 20 57 6f 72 6c 64  0d 0a 00
  |lo World...|

As you can see, the first bytes show that the origin is now 0xc100 , 
instead of 0xc000.
I guess it's because ld adds 0x100h (old .com startup) to my .org setting.
Another problem is i don't want all those fillers, between stub (the 
first seven bytes) and the start of my code section (at 0xc000).

I want to get this instead:
00000000  fe 00 c0 1b c0 00 c0 21  0d c0 7e 23 a7 c8 cd a2
  |.......!..~#....|
00000010  00 18 f7 c9 48 65 6c 6c  6f 20 57 6f 72 6c 64 0d
  |....Hello World.|
00000020  0a 00

I tried to set up a little ld script, for using with «-T» flag of ld, 
but all i got is the return of «COFF» sections…
SECTIONS
     {
       . = 0xC000;
       .text : { *(.text) }
     }


I've made extensive search on the web, on this list, and on dedicated 
emulators list, but didn't find anything about this problem.
If someone can help… thank you.