https://sourceware.org/bugzilla/show_bug.cgi?id=33553
Bug ID: 33553
Summary: objdump -d sometimes fails to disassemble
Product: binutils
Version: 2.46 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: ro at gcc dot gnu.org
CC: hjl.tools at gmail dot com
Target Milestone: ---
Target: i?86-*-solaris2*
When looking at GCC PR target/122331, I noticed that objdump -dw sometimes
fails to disassemble when Solaris dis has no such issue:
Consider the testcase from gcc/configure.ac (HAVE_AS_IX86_GOT32X):
.data
bar:
.byte 1
.text
.global _start
_start:
cmpl $0, bar@GOT
jmp *_start@GOT
Assembling and linking that as in that test
gas --32 conftest.s
gld -melf_i386_sol2 -o conftest conftest.o
objdump -dw conftest.o
produces
conftest: file format elf32-i386-sol2
Disassembly of section .text:
08048074 <_START_>:
8048074: 83 3d 90 90 04 08 00 e9 f4 ff ff ff 90
.=...........
while Solaris dis has no such issue:
disassembly for conftest
section .text
_START_: 83 3d 90 90 04 08 cmpl $0x0,0x8049090
00
0x804807b: e9 f4 ff ff ff jmp -0xc <_START_>
0x8048080: 90 nop
In other cases (conftest created with /bin/ld), objdump has no such problems:
08050478 <_start>:
8050478: 83 3d 0c 00 00 00 00 cmpl $0x0,0xc
805047f: ff 25 10 00 00 00 jmp *0x10
Same for conftest created on Linux/i686:
08049000 <_start>:
8049000: 83 3d f0 af 04 08 00 cmpl $0x0,0x804aff0
8049007: e9 f4 ff ff ff jmp 8049000 <_start>
804900c: 90 nop
I'm attaching the Solaris gas/gld conftest for inspection.
--
You are receiving this mail because:
You are on the CC list for the bug.
