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From 509a2ec6ad3ea7eb3f4cf59538cf636a2126e4c3 Mon Sep 17 00:00:00 2001
From: liuzhensong <liuzhensong@loongson.cn>
Date: Fri, 2 Sep 2022 16:29:14 +0800
Subject: [PATCH 039/160] LoongArch:ld: Fix relocation error of pcrel.
Patch for branch 2.39.
Need to reduce the address of pc when using
reloction R_LARCH_SOP_PUSH_PCREL.
bfd/
* elfnn-loongarch.c
---
bfd/elfnn-loongarch.c | 3 +-
ld/testsuite/ld-loongarch-elf/pcrel-const.d | 14 +++++++
ld/testsuite/ld-loongarch-elf/pcrel-const.lds | 14 +++++++
ld/testsuite/ld-loongarch-elf/pcrel-const.s | 12 ++++++
ld/testsuite/ld-loongarch-elf/pr.exp | 39 +++++++++++++++++++
5 files changed, 81 insertions(+), 1 deletion(-)
create mode 100644 ld/testsuite/ld-loongarch-elf/pcrel-const.d
create mode 100644 ld/testsuite/ld-loongarch-elf/pcrel-const.lds
create mode 100644 ld/testsuite/ld-loongarch-elf/pcrel-const.s
create mode 100644 ld/testsuite/ld-loongarch-elf/pr.exp
--- a/bfd/elfnn-loongarch.c
+++ b/bfd/elfnn-loongarch.c
@@ -2341,9 +2341,10 @@ loongarch_elf_relocate_section (bfd *out
case R_LARCH_SOP_PUSH_PLT_PCREL:
unresolved_reloc = false;
- if (resolved_to_const)
+ if (!is_undefweak && resolved_to_const)
{
relocation += rel->r_addend;
+ relocation -= pc;
break;
}
else if (is_undefweak)
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/pcrel-const.d
@@ -0,0 +1,14 @@
+#as: -mla-global-with-pcrel
+#objdump: -Drsz
+
+.*:[ ]+file format .*
+
+
+Disassembly of section .text:
+
+.* <foo>:
+#...
+[ ]+8:[ ]+02c04084[ ]+addi.d[ ]+\$a0,[ ]+\$a0,[ ]+16\(0x10\)
+#...
+0+14 <__sec_end>:
+#pass
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/pcrel-const.lds
@@ -0,0 +1,14 @@
+ENTRY(foo);
+SECTIONS
+{
+ .text : {
+ *(.text*)
+ }
+
+ .data : {
+ __sec_start = .;
+ *(.gzdata)
+ __sec_end = .;
+ }
+}
+PROVIDE(__sec_size = __sec_end);
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/pcrel-const.s
@@ -0,0 +1,12 @@
+ .text
+ .align 2
+ .globl foo
+ .type foo, @function
+foo:
+ nop
+ la.global $r4,__sec_size
+ ldptr.w $r4,$r4,0
+ jr $r1
+ .size foo, .-foo
+ .data
+ .word 1
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/pr.exp
@@ -0,0 +1,39 @@
+# Expect script for LoongArch ELF linker tests
+# Copyright (C) 2022 Free Software Foundation, Inc.
+#
+# This file is part of the GNU Binutils.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+#
+
+if ![istarget loongarch64-*-*] {
+ return
+}
+
+set link_tests [list \
+ [list \
+ "pcrel const" \
+ "-T pcrel-const.lds" "" \
+ "-mla-global-with-pcrel" \
+ { pcrel-const.s } \
+ [list \
+ [list objdump -D pcrel-const.d] \
+ ] \
+ "pcrel-const" \
+ ] \
+]
+
+run_ld_link_tests $link_tests
|
