https://sourceware.org/bugzilla/show_bug.cgi?id=25689
Bug ID: 25689
Summary: PDP-11 a.out LMA/VMA addresses incorrect
Product: binutils
Version: 2.34
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: martin at teckelworks dot com
Target Milestone: ---
Created attachment 12384
--> https://sourceware.org/bugzilla/attachment.cgi?id=12384&action=edit
Contains object files and linker script
I’ve come across and issue in binutils-2.34 that wasn’t there in
binutils-2.33.1 related to the VMA and LMA addresses displayed by objdump when
the text segment is set to start at 0x400 (or anything non-zero). This also
affects addresses shown during disassembly. It looks like the issue may be
related to the recent changes in bdf/pdp11.c
I’ve attached a linker script, two object files and the resulting a.out file
which you can use to reproduce the issue.
# $HOME/bin/pdp11-aout-ld -v
GNU ld (GNU Binutils) 2.33.1
# $HOME/bin/pdp11-aout-ld -Traw a.o crt0.o
# $HOME/bin/pdp11-aout-objdump -v
GNU objdump (GNU Binutils) 2.33.1
Copyright (C) 2019 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
[root@crosscompile pdp11]# $HOME/bin/pdp11-aout-objdump -x a.out
a.out: file format a.out-pdp11
a.out
architecture: pdp11, flags 0x000000be:
EXEC_P, HAS_LINENO, HAS_DEBUG, HAS_SYMS, HAS_LOCALS, WP_TEXT
start address 0x0000048e
Sections:
Idx Name Size VMA LMA File off Algn
0 .text 000000a6 00000400 00000400 00000010 2**1
CONTENTS, ALLOC, LOAD, CODE
1 .data 0000000e 00000500 00000500 000000b6 2**1
CONTENTS, ALLOC, LOAD, DATA
2 .bss 00000000 0000050e 0000050e 00000000 2**1
ALLOC
SYMBOL TABLE:
00000400 l .text 0000 00 02 a.o
00000400 g .text 0000 00 22 _cons_putchar
00000432 g .text 0000 00 22 _cons_println
0000045a g .text 0000 00 22 _main
00000000 *UND* 0000 00 20 ___main
0000048e l .text 0000 00 02 crt0.o
0000048e g .text 0000 00 22 _start
000004a4 g .text 0000 00 22 atexit
000004a6 g .text 0000 00 22 _etext
# $HOME/bin234/pdp11-aout-objdump -v
GNU objdump (GNU Binutils) 2.34
Copyright (C) 2020 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
# $HOME/bin234/pdp11-aout-objdump -x a.out
a.out: file format a.out-pdp11
a.out
architecture: pdp11, flags 0x000000be:
EXEC_P, HAS_LINENO, HAS_DEBUG, HAS_SYMS, HAS_LOCALS, WP_TEXT
start address 0x0000048e
Sections:
Idx Name Size VMA LMA File off Algn
0 .text 000000a6 00000000 00000000 00000010 2**1
CONTENTS, ALLOC, LOAD, CODE
1 .data 0000000e 00002000 00002000 000000b6 2**1
CONTENTS, ALLOC, LOAD, DATA
2 .bss 00000000 0000200e 0000200e 00000000 2**1
ALLOC
SYMBOL TABLE:
00000400 l .text 0000 00 02 a.o
00000400 g .text 0000 00 22 _cons_putchar
00000432 g .text 0000 00 22 _cons_println
0000045a g .text 0000 00 22 _main
00000000 *UND* 0000 00 20 ___main
0000048e l .text 0000 00 02 crt0.o
0000048e g .text 0000 00 22 _start
000004a4 g .text 0000 00 22 atexit
000004a6 g .text 0000 00 22 _etext
--
You are receiving this mail because:
You are on the CC list for the bug.
