https://sourceware.org/bugzilla/show_bug.cgi?id=22681
Bug ID: 22681
Summary: vmovd with qword ptr [rax] is misassembled
Product: binutils
Version: 2.30 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Target: x86-64
[hjl@gnu-6 testsuite]$ cat /tmp/x.s
.text
movd 128(%rax), %xmm1
movd %rax, %xmm1
movd %xmm1, 128(%rax)
movd %xmm1, %rax
vmovd 128(%rax), %xmm1
vmovd %rax, %xmm1
vmovd %xmm1, 128(%rax)
vmovd %xmm1, %rax
{evex} vmovd 128(%rax), %xmm1
{evex} vmovd %xmm1, 128(%rax)
.intel_syntax noprefix
movd xmm1, qword ptr [rax + 128]
movd xmm1, rax
movd qword ptr [rax + 128], xmm1
movd rax, xmm1
vmovd xmm1, qword ptr [rax + 128]
vmovd xmm1, rax
vmovd qword ptr [rax + 128], xmm1
vmovd rax, xmm1
{evex} vmovd xmm1, qword ptr [rax + 128]
{evex} vmovd qword ptr [rax + 128], xmm1
[hjl@gnu-6 testsuite]$ gcc -c /tmp/x.s
[hjl@gnu-6 testsuite]$ objdump -dw -Mintel x.o
x.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <.text>:
0: 66 0f 6e 88 80 00 00 00 movd xmm1,DWORD PTR [rax+0x80]
8: 66 48 0f 6e c8 movq xmm1,rax
d: 66 0f 7e 88 80 00 00 00 movd DWORD PTR [rax+0x80],xmm1
15: 66 48 0f 7e c8 movq rax,xmm1
1a: c5 f9 6e 88 80 00 00 00 vmovd xmm1,DWORD PTR [rax+0x80]
22: c4 e1 f9 6e c8 vmovq xmm1,rax
27: c5 f9 7e 88 80 00 00 00 vmovd DWORD PTR [rax+0x80],xmm1
2f: c4 e1 f9 7e c8 vmovq rax,xmm1
34: 62 f1 7d 08 6e 48 20 vmovd xmm1,DWORD PTR [rax+0x80]
3b: 62 f1 7d 08 7e 48 20 vmovd DWORD PTR [rax+0x80],xmm1
42: 66 48 0f 6e 88 80 00 00 00 movq xmm1,QWORD PTR [rax+0x80]
4b: 66 48 0f 6e c8 movq xmm1,rax
50: 66 48 0f 7e 88 80 00 00 00 movq QWORD PTR [rax+0x80],xmm1
59: 66 48 0f 7e c8 movq rax,xmm1
5e: c5 f9 6e 88 80 00 00 00 vmovd xmm1,DWORD PTR [rax+0x80]
This should be QWORD.
66: c4 e1 f9 6e c8 vmovq xmm1,rax
6b: c5 f9 7e 88 80 00 00 00 vmovd DWORD PTR [rax+0x80],xmm1
This should be QWORD.
73: c4 e1 f9 7e c8 vmovq rax,xmm1
78: 62 f1 7d 08 6e 48 20 vmovd xmm1,DWORD PTR [rax+0x80]
This should be QWORD.
7f: 62 f1 7d 08 7e 48 20 vmovd DWORD PTR [rax+0x80],xmm1
This should be QWORD.
[hjl@gnu-6 testsuite]$
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