[Bug binutils/11960] New: objdump gets the wrong length for pushw immediate in 64 bit mode
In 64 bit code, objdump misunderstands the pushw immediate instruction. I believe the disassembly for this example should be: "pushw $0x", followed by whatever junk for the 0xaa and 0xbb bytes. The disassembler is eating two extra bytes and displaying a 64 bit value instead of a 16 bit one. example: $ cat pushw.s .text pushw $0x .byte 0xaa .byte 0xbb $ as -o pushw.o pushw.s $ objdump -d pushw.o pushw.o: file format elf64-x86-64 Disassembly of section .text: <.text>: 0: 66 68 22 22 aa bb pushw $0xbbaa $ I found the same behavior with these versions: 2.19.51.0.14-3.fc11 20090722 2.20.1.20100303 -- Summary: objdump gets the wrong length for pushw immediate in 64 bit mode Product: binutils Version: 2.20 Status: NEW Severity: normal Priority: P2 Component: binutils AssignedTo: unassigned at sources dot redhat dot com ReportedBy: alex at cloudswitch dot com CC: bug-binutils at gnu dot org http://sourceware.org/bugzilla/show_bug.cgi?id=11960 --- You are receiving this mail because: --- You are on the CC list for the bug, or are watching someone who is. ___ bug-binutils mailing list bug-binutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/11956] relocation truncated to fit R_MIPS_TLS_GD linking xulrunner
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[Bug binutils/11960] objdump gets the wrong length for pushw immediate in 64 bit mode
--- Additional Comments From cvs-commit at gcc dot gnu dot org 2010-08-31
21:57 ---
Subject: Bug 11960
CVSROOT:/cvs/src
Module name:src
Changes by: h...@sourceware.org 2010-08-31 21:56:58
Modified files:
gas/testsuite : ChangeLog
gas/testsuite/gas/i386: opcode-intel.d x86-64-opcode.d
x86-64-opcode.s
opcodes: ChangeLog i386-dis.c
Log message:
Fix "pushw imm16" for x86-64 disassembler.
gas/testsuite/
2010-08-31 H.J. Lu
PR binutils/11960
* gas/i386/opcode-intel.d: Updated.
* gas/i386/x86-64-opcode.d: Likewise.
* gas/i386/x86-64-opcode.s: Add a "pushw imm16" test.
opcodes/
2010-08-31 H.J. Lu
PR binutils/11960
* i386-dis.c (sIv): New.
(dis386): Replace Iq with sIv on "pushT".
(reg_table): Replace T with {T|} on callT, JcallT, jmpT and JjmpT.
(x86_64_table): Replace {T|}/{P|} with P.
(putop): Add 'w' to 'T'/'P' if needed for Intel syntax.
(OP_sI): Update v_mode. Remove w_mode.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gas/testsuite/ChangeLog.diff?cvsroot=src&r1=1.1724&r2=1.1725
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gas/testsuite/gas/i386/opcode-intel.d.diff?cvsroot=src&r1=1.9&r2=1.10
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gas/testsuite/gas/i386/x86-64-opcode.d.diff?cvsroot=src&r1=1.17&r2=1.18
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gas/testsuite/gas/i386/x86-64-opcode.s.diff?cvsroot=src&r1=1.10&r2=1.11
http://sourceware.org/cgi-bin/cvsweb.cgi/src/opcodes/ChangeLog.diff?cvsroot=src&r1=1.1625&r2=1.1626
http://sourceware.org/cgi-bin/cvsweb.cgi/src/opcodes/i386-dis.c.diff?cvsroot=src&r1=1.250&r2=1.251
--- Additional Comments From hjl dot tools at gmail dot com 2010-08-31
21:57 ---
Fixed.
--
What|Removed |Added
Status|NEW |RESOLVED
Resolution||FIXED
http://sourceware.org/bugzilla/show_bug.cgi?id=11960
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