https://sourceware.org/bugzilla/show_bug.cgi?id=20127
Bug ID: 20127
Summary: Addend not preserved for many X86 relocations
Product: binutils
Version: 2.25
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: louis.granboulan.developer at gmail dot com
Target Milestone: ---
Input is a.s
.globl main
.text
main:
movl $E, %eax
movl $E+1, %eax
movl $E@PLT, %eax
movl $E@PLT+1, %eax
movl $E@tlsgd, %eax
movl $E@tlsgd+1, %eax
movl $E@tlsldm, %eax
movl $E@tlsldm+1, %eax
movl $E@indntpoff, %eax
movl $E@indntpoff+1, %eax
movl $E@gotntpoff, %eax
movl $E@gotntpoff+1, %eax
movl $E@gottpoff, %eax
movl $E@gottpoff+1, %eax
Assembled with "as -32 -o a.o a.s"
Analyzed with "objdump -dr a.o"
a.o: file format elf32-i386
Disassembly of section .text:
00000000 <main>:
0: b8 00 00 00 00 mov $0x0,%eax
1: R_386_32 E
5: b8 01 00 00 00 mov $0x1,%eax
6: R_386_32 E
a: b8 fc ff ff ff mov $0xfffffffc,%eax
b: R_386_PLT32 E
f: b8 fc ff ff ff mov $0xfffffffc,%eax
10: R_386_PLT32 E
14: b8 00 00 00 00 mov $0x0,%eax
15: R_386_TLS_GD E
19: b8 00 00 00 00 mov $0x0,%eax
1a: R_386_TLS_GD E
1e: b8 00 00 00 00 mov $0x0,%eax
1f: R_386_TLS_LDM E
23: b8 00 00 00 00 mov $0x0,%eax
24: R_386_TLS_LDM E
28: b8 00 00 00 00 mov $0x0,%eax
29: R_386_TLS_IE E
2d: b8 00 00 00 00 mov $0x0,%eax
2e: R_386_TLS_IE E
32: b8 00 00 00 00 mov $0x0,%eax
33: R_386_TLS_GOTIE E
37: b8 00 00 00 00 mov $0x0,%eax
38: R_386_TLS_GOTIE E
3c: b8 00 00 00 00 mov $0x0,%eax
3d: R_386_TLS_IE_32 E
41: b8 00 00 00 00 mov $0x0,%eax
42: R_386_TLS_IE_32 E
The error is in every other line.
For the R_386_PLT32 relocation with addend, I would have expected "b8 fd ff ff
ff".
For the other ones, I would have expected "b8 01 00 00 00".
There might be other relocations with this issue; I don't know all the
relocation types.
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