z88dk: compiles defining org -1 for bss section not generating a separate bss bin for unknown reason

[aralbrec]

Test code:

zzz.asm

SECTION CODE
org 0


SECTION DATA
org 0x8000


SECTION BSS
org -1

yyy.asm

SECTION CODE
defb 1,2,3,4,5

SECTION DATA
defb 10,11,12,13

SECTION BSS
defs 3

First a compile that goes straight to binary:

z80asm -b -o=zzz zzz.asm yyy.asm

Everything is good, three files are generated: zzz_CODE.bin, zzz_DATA.bin, zzz_BSS.bin

Next try doing the same but build object files first:

z80asm zzz.asm
z80asm yyy.asm
z80asm -b -o=zzz zzz.o yyy.o

Only two files are generated: zzz_CODE.bin and zzz_DATA.bin. The BSS section has been appended to DATA as if the "org -1" was ignored.

If you put everything into one file and go through object file, again the correct result.

[aralbrec]

Paulo is there any chance you could have a look at this sooner rather than later? I hadn't realized that this is a critical bug for all rom compiles - nothing will work that is destined for rom.

http://www.smspower.org/forums/16691-AnotherZ88DKSDCCDifference#98643

The issue has cropped up before see #65.

[pauloscustodio]

Done. Thanks for reporting.

[aralbrec]

Thanks Paulo, the example given now works but the problem still exists in compiles for a reason I haven't been able to determine yet.

aaa.c

// zcc +z80 -v -clib=sdcc_iy aaa.c -o aaa -m

// DATA

unsigned char data[] = "Hello";

// BSS

unsigned buffer[100];

// CODE

int main(void)
{
	return 1;
}

After the compile a separate bss binary is not generated.

The memory map used is this one, excerpt here:

SECTION BSS

IF __crt_org_bss

   org __crt_org_bss

ELSE

   IF __crt_model

      org -1

   ENDIF

ENDIF

section bss_align_256
section bss_align_128
...

From the map file generated by the compile:

TAR__clib_malloc_heap_size      = $FFFFFFFF ; L z80_crt
TAR__crt_interrupt_mode         = $FFFFFFFF ; L z80_crt
TAR__crt_org_bss                = $FFFFFFFF ; L z80_crt
__clib_malloc_heap_size         = $FFFFFFFF ; L z80_crt
__crt_interrupt_mode            = $FFFFFFFF ; L z80_crt
__crt_org_bss                   = $FFFFFFFF ; L z80_crt
DEF__crt_enable_trap            = $0000 ; L z80_crt
IOCTL_RESET                     = $0000 ; G z80_crt
...

[pauloscustodio]

I found and fixed another problem for the given C code. Please let me know of any further problems.

[pauloscustodio]

This should be fixed now. Please let me know. On a related but different topic: how do I get the zsdcpp binary? I downloaded the nightly build and copied the executables, but we should be able to build from source. Thanks, Paulo From: aralbrec Sent: 2 de julho de 2017 07:38 To: z88dk/z88dk Cc: pauloscustodio; State change Subject: Re: [z88dk/z88dk] z80asm: compiles defining org -1 for bss sectionnot generating a separate bss bin for unknown reason (#270) Thanks Paulo, the example given now works but the problem still exists in compiles for a reason I haven't been able to determine yet. aaa.c // zcc +z80 -v -clib=sdcc_iy aaa.c -o aaa -m // DATA unsigned char data[] = "Hello"; // BSS unsigned buffer[100]; // CODE int main(void) { return 1; } After the compile a separate bss binary is not generated. The memory map used is this one, excerpt here: SECTION BSS IF __crt_org_bss org __crt_org_bss ELSE IF __crt_model org -1 ENDIF ENDIF section bss_align_256 section bss_align_128 ... From the map file generated by the compile: TAR__clib_malloc_heap_size = $FFFFFFFF ; L z80_crt TAR__crt_interrupt_mode = $FFFFFFFF ; L z80_crt TAR__crt_org_bss = $FFFFFFFF ; L z80_crt __clib_malloc_heap_size = $FFFFFFFF ; L z80_crt __crt_interrupt_mode = $FFFFFFFF ; L z80_crt __crt_org_bss = $FFFFFFFF ; L z80_crt DEF__crt_enable_trap = $0000 ; L z80_crt IOCTL_RESET = $0000 ; G z80_crt ... — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub, or mute the thread.

[aralbrec]

Thanks Paulo. Everything looks good.