https://sourceware.org/bugzilla/show_bug.cgi?id=19567
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
[hjl@gnu-6 pr19567]$ cat x.s
.globl _start
_start:
mov $_start,%rax
mov _start,%rax
[hjl@gnu-6 pr19567]$ make
as --x32 -o x.o x.s
ld.gold -m elf32_x86_64 -Ttext-segment 0x80000000 -o x x.o
objdump -dw x
x: file format elf32-x86-64
Disassembly of section .text:
80000074 <_start>:
80000074: 48 c7 c0 74 00 00 80 mov $0xffffffff80000074,%rax
8000007b: 48 8b 04 25 74 00 00 80 mov 0xffffffff80000074,%rax
[hjl@gnu-6 pr19567]$ readelf -r x.o
Relocation section '.rela.text' at offset 0x9c contains 2 entries:
Offset Info Type Sym.Value Sym. Name + Addend
00000003 0000040b R_X86_64_32S 00000000 _start + 0
0000000b 0000040b R_X86_64_32S 00000000 _start + 0
[hjl@gnu-6 pr19567]$ ld -m elf32_x86_64 -Ttext-segment 0x80000000 -o x x.o
x.o: In function `_start':
(.text+0x3): relocation truncated to fit: R_X86_64_32S against symbol `_start'
defined in .text section in x.o
x.o: In function `_start':
(.text+0xb): relocation truncated to fit: R_X86_64_32S against symbol `_start'
defined in .text section in x.o
[hjl@gnu-6 pr19567]$
To detect R_X86_64_32S overflow, Symbol_value::value to return 64-bit value
so that I can check if there is an overflow.
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
bug-binutils mailing list
bug-binutils@gnu.org
https://lists.gnu.org/mailman/listinfo/bug-binutils
