https://sourceware.org/bugzilla/show_bug.cgi?id=23526
Bug ID: 23526
Summary: 32-bit address can be encoded with addr32 prefix
Product: binutils
Version: 2.32 (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-tools-1 binutils]$ cat 2.s
.allow_index_reg
mov 0xff332211, %eax
mov -0xccddef(,%eiz,), %eax
mov %eax, 0xff332211
mov %eax, -0xccddef(,%eiz,)
mov -0xccddef(,%eiz,), %ebx
mov %ebx, -0xccddef(,%eiz,)
[hjl@gnu-tools-1 binutils]$ gcc -c 2.s
[hjl@gnu-tools-1 binutils]$ ./objdump -dw 2.o
2.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <.text>:
0: a1 11 22 33 ff 00 00 00 00 movabs 0xff332211,%eax
9: 67 8b 04 25 11 22 33 ff mov 0xff332211,%eax
11: a3 11 22 33 ff 00 00 00 00 movabs %eax,0xff332211
1a: 67 89 04 25 11 22 33 ff mov %eax,0xff332211
22: 67 8b 1c 25 11 22 33 ff mov 0xff332211,%ebx
2a: 67 89 1c 25 11 22 33 ff mov %ebx,0xff332211
[hjl@gnu-tools-1 binutils]$ cat 3.s
mov 0xff332211, %ebx
mov %ebx, 0xff332211
[hjl@gnu-tools-1 binutils]$ gcc -c 3.s
3.s: Assembler messages:
3.s:1: Error: unsupported instruction `mov'
3.s:2: Error: unsupported instruction `mov'
[hjl@gnu-tools-1 binutils]$
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