https://sourceware.org/bugzilla/show_bug.cgi?id=21565
Bug ID: 21565
Summary: Z80: Incorrect linkage of call instructions
Product: binutils
Version: 2.28
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: tgalbers2000 at gmail dot com
Target Milestone: ---
Created attachment 10092
--> https://sourceware.org/bugzilla/attachment.cgi?id=10092&action=edit
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.
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
bug-binutils mailing list
bug-binutils@gnu.org
https://lists.gnu.org/mailman/listinfo/bug-binutils
