129 lines
3.3 KiB
Diff
129 lines
3.3 KiB
Diff
From 509a2ec6ad3ea7eb3f4cf59538cf636a2126e4c3 Mon Sep 17 00:00:00 2001
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From: liuzhensong <liuzhensong@loongson.cn>
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Date: Fri, 2 Sep 2022 16:29:14 +0800
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Subject: [PATCH 039/160] LoongArch:ld: Fix relocation error of pcrel.
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Patch for branch 2.39.
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Need to reduce the address of pc when using
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reloction R_LARCH_SOP_PUSH_PCREL.
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bfd/
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* elfnn-loongarch.c
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---
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bfd/elfnn-loongarch.c | 3 +-
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ld/testsuite/ld-loongarch-elf/pcrel-const.d | 14 +++++++
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ld/testsuite/ld-loongarch-elf/pcrel-const.lds | 14 +++++++
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ld/testsuite/ld-loongarch-elf/pcrel-const.s | 12 ++++++
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ld/testsuite/ld-loongarch-elf/pr.exp | 39 +++++++++++++++++++
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5 files changed, 81 insertions(+), 1 deletion(-)
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create mode 100644 ld/testsuite/ld-loongarch-elf/pcrel-const.d
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create mode 100644 ld/testsuite/ld-loongarch-elf/pcrel-const.lds
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create mode 100644 ld/testsuite/ld-loongarch-elf/pcrel-const.s
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create mode 100644 ld/testsuite/ld-loongarch-elf/pr.exp
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--- a/bfd/elfnn-loongarch.c
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+++ b/bfd/elfnn-loongarch.c
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@@ -2342,9 +2342,10 @@ loongarch_elf_relocate_section (bfd *out
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case R_LARCH_SOP_PUSH_PLT_PCREL:
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unresolved_reloc = false;
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- if (resolved_to_const)
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+ if (!is_undefweak && resolved_to_const)
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{
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relocation += rel->r_addend;
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+ relocation -= pc;
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break;
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}
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else if (is_undefweak)
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--- /dev/null
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+++ b/ld/testsuite/ld-loongarch-elf/pcrel-const.d
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@@ -0,0 +1,14 @@
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+#as: -mla-global-with-pcrel
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+#objdump: -Drsz
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+
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+.*:[ ]+file format .*
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+
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+
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+Disassembly of section .text:
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+
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+.* <foo>:
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+#...
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+[ ]+8:[ ]+02c04084[ ]+addi.d[ ]+\$a0,[ ]+\$a0,[ ]+16\(0x10\)
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+#...
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+0+14 <__sec_end>:
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+#pass
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--- /dev/null
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+++ b/ld/testsuite/ld-loongarch-elf/pcrel-const.lds
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@@ -0,0 +1,14 @@
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+ENTRY(foo);
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+SECTIONS
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+{
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+ .text : {
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+ *(.text*)
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+ }
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+
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+ .data : {
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+ __sec_start = .;
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+ *(.gzdata)
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+ __sec_end = .;
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+ }
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+}
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+PROVIDE(__sec_size = __sec_end);
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--- /dev/null
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+++ b/ld/testsuite/ld-loongarch-elf/pcrel-const.s
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@@ -0,0 +1,12 @@
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+ .text
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+ .align 2
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+ .globl foo
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+ .type foo, @function
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+foo:
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+ nop
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+ la.global $r4,__sec_size
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+ ldptr.w $r4,$r4,0
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+ jr $r1
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+ .size foo, .-foo
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+ .data
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+ .word 1
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--- /dev/null
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+++ b/ld/testsuite/ld-loongarch-elf/pr.exp
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@@ -0,0 +1,39 @@
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+# Expect script for LoongArch ELF linker tests
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+# Copyright (C) 2022 Free Software Foundation, Inc.
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+#
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+# This file is part of the GNU Binutils.
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+#
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 3 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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+# MA 02110-1301, USA.
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+#
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+
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+if ![istarget loongarch64-*-*] {
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+ return
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+}
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+
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+set link_tests [list \
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+ [list \
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+ "pcrel const" \
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+ "-T pcrel-const.lds" "" \
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+ "-mla-global-with-pcrel" \
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+ { pcrel-const.s } \
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+ [list \
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+ [list objdump -D pcrel-const.d] \
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+ ] \
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+ "pcrel-const" \
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+ ] \
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+]
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+
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+run_ld_link_tests $link_tests
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