1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
Upstream-Status: Backport
Signed-off-by: Ross Burton <ross.burton@intel.com>
From 842c390469e2c2e10b5aa36700324cd3bde25875 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 17 Feb 2018 06:47:28 -0800
Subject: [PATCH] x86-64: Treat R_X86_64_PLT32 as R_X86_64_PC32
Starting from binutils commit bd7ab16b4537788ad53521c45469a1bdae84ad4a:
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=bd7ab16b4537788ad53521c45469a1bdae84ad4a
x86-64 assembler generates R_X86_64_PLT32, instead of R_X86_64_PC32, for
32-bit PC-relative branches. Grub2 should treat R_X86_64_PLT32 as
R_X86_64_PC32.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
grub-core/efiemu/i386/loadcore64.c | 1 +
grub-core/kern/x86_64/dl.c | 1 +
util/grub-mkimagexx.c | 1 +
util/grub-module-verifier.c | 1 +
4 files changed, 4 insertions(+)
diff --git a/grub-core/efiemu/i386/loadcore64.c b/grub-core/efiemu/i386/loadcore64.c
index e49d0b6ff..18facf47f 100644
--- a/grub-core/efiemu/i386/loadcore64.c
+++ b/grub-core/efiemu/i386/loadcore64.c
@@ -98,6 +98,7 @@ grub_arch_efiemu_relocate_symbols64 (grub_efiemu_segment_t segs,
break;
case R_X86_64_PC32:
+ case R_X86_64_PLT32:
err = grub_efiemu_write_value (addr,
*addr32 + rel->r_addend
+ sym.off
diff --git a/grub-core/kern/x86_64/dl.c b/grub-core/kern/x86_64/dl.c
index 440690673..3a73e6e6c 100644
--- a/grub-core/kern/x86_64/dl.c
+++ b/grub-core/kern/x86_64/dl.c
@@ -70,6 +70,7 @@ grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr,
break;
case R_X86_64_PC32:
+ case R_X86_64_PLT32:
{
grub_int64_t value;
value = ((grub_int32_t) *addr32) + rel->r_addend + sym->st_value -
diff --git a/util/grub-mkimagexx.c b/util/grub-mkimagexx.c
index a2bb05439..39d7efb91 100644
--- a/util/grub-mkimagexx.c
+++ b/util/grub-mkimagexx.c
@@ -841,6 +841,7 @@ SUFFIX (relocate_addresses) (Elf_Ehdr *e, Elf_Shdr *sections,
break;
case R_X86_64_PC32:
+ case R_X86_64_PLT32:
{
grub_uint32_t *t32 = (grub_uint32_t *) target;
*t32 = grub_host_to_target64 (grub_target_to_host32 (*t32)
diff --git a/util/grub-module-verifier.c b/util/grub-module-verifier.c
index 9179285a5..a79271f66 100644
--- a/util/grub-module-verifier.c
+++ b/util/grub-module-verifier.c
@@ -19,6 +19,7 @@ struct grub_module_verifier_arch archs[] = {
-1
}, (int[]){
R_X86_64_PC32,
+ R_X86_64_PLT32,
-1
}
},
--
2.11.0
|
