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[Bug binutils/23655] Wrong disassembler output for EVEX.W instructions i


From: hjl.tools at gmail dot com
Subject: [Bug binutils/23655] Wrong disassembler output for EVEX.W instructions in 32-bit
Date: Fri, 14 Sep 2018 12:33:41 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=23655

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
address@hidden binutils]$ cat /tmp/1.s
        .text
        .byte 0x62, 0xf1, 0xd6, 0x38, 0x2a, 0xf0
        .text
        .byte 0x62, 0xf1, 0xd7, 0x38, 0x2a, 0xf0
        .text
        .byte 0x62, 0xf1, 0xd6, 0x08, 0x7b, 0xf0
        .text
        .byte 0x62, 0xf1, 0xd7, 0x08, 0x7b, 0xf0
        .text
        .byte 0x62, 0xf1, 0xd6, 0x38, 0x7b, 0xf0
        .text
        .byte 0x62, 0xf1, 0xd7, 0x38, 0x7b, 0xf0
address@hidden binutils]$ as --32 -o 1.o /tmp/1.s
address@hidden binutils]$ ./objdump -dw 1.o

1.o:     file format elf32-i386


Disassembly of section .text:

00000000 <.text>:
   0:   62 f1 d6 38 2a f0       vcvtsi2ss %eax,{rd-sae},%xmm5,%xmm6
   6:   62 f1 d7 38 2a f0       vcvtsi2sd %eax,{rd-sae},%xmm5,%xmm6
                                ^^^^^^^^^^^^^^^ No such insn     
   c:   62 f1 d6 08 7b f0       vcvtusi2ss %eax,%xmm5,%xmm6
  12:   62 f1 d7 08 7b f0       vcvtusi2sd %eax,%xmm5,%xmm6
  18:   62 f1 d6 38 7b f0       vcvtusi2ss %eax,{rd-sae},%xmm5,%xmm6
  1e:   62 f1 d7 38 7b f0       vcvtusi2sd %eax,{rd-sae},%xmm5,%xmm6
                                ^^^^^^^^^^^^^^^^ No such insn
address@hidden binutils]$

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