From 35938863d51f469f5bc715b3a7aa6f2a0eb150a6 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <[email protected]>
Date: Wed, 19 Jun 2024 14:04:18 +0800
Subject: [PATCH 092/123] LoongArch: TLS IE needs only one dynamic reloc

As the comment in the code says, TLS_IE needs only one dynamic reloc.
But commit b67a17aa7c0c ("LoongArch: Fix the issue of excessive
relocation generated by GD and IE") has incorrectly allocated the space
for two dynamic relocs, causing libc.so to contain 8 R_LARCH_NONE.

Adjust tlsdesc-dso.d for the offset changes and add two tests to ensure
there are no R_LARCH_NONE with TLS.

Signed-off-by: Xi Ruoyao <[email protected]>
---
 bfd/elfnn-loongarch.c                         |  2 +-
 ld/testsuite/ld-loongarch-elf/desc-ie-reloc.d |  9 ++
 ld/testsuite/ld-loongarch-elf/desc-ie.d       |  8 +-
 .../ld-loongarch-elf/ld-loongarch-elf.exp     |  2 +
 .../ld-loongarch-elf/tlsdesc-dso-reloc.d      |  9 ++
 ld/testsuite/ld-loongarch-elf/tlsdesc-dso.d   | 86 +++++++++----------
 6 files changed, 68 insertions(+), 48 deletions(-)
 create mode 100644 ld/testsuite/ld-loongarch-elf/desc-ie-reloc.d
 create mode 100644 ld/testsuite/ld-loongarch-elf/tlsdesc-dso-reloc.d

diff --git a/bfd/elfnn-loongarch.c b/bfd/elfnn-loongarch.c
index 9eaad7f4..51e3d311 100644
--- a/bfd/elfnn-loongarch.c
+++ b/bfd/elfnn-loongarch.c
@@ -1353,7 +1353,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
 	    {
 	      s->size += GOT_ENTRY_SIZE;
 	      if (need_reloc)
-		htab->elf.srelgot->size += 2 * sizeof (ElfNN_External_Rela);
+		htab->elf.srelgot->size += sizeof (ElfNN_External_Rela);
 	    }
 
 	  /* TLS_DESC needs one dynamic reloc and two GOT slot.  */
diff --git a/ld/testsuite/ld-loongarch-elf/desc-ie-reloc.d b/ld/testsuite/ld-loongarch-elf/desc-ie-reloc.d
new file mode 100644
index 00000000..c7a2f8ed
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/desc-ie-reloc.d
@@ -0,0 +1,9 @@
+#source: desc-ie.s
+#as:
+#ld: -shared -z norelro --hash-style=both
+#readelf: -Wr
+
+#failif
+#...
+.* +R_LARCH_NONE +.*
+#...
diff --git a/ld/testsuite/ld-loongarch-elf/desc-ie.d b/ld/testsuite/ld-loongarch-elf/desc-ie.d
index c833b233..0759404b 100644
--- a/ld/testsuite/ld-loongarch-elf/desc-ie.d
+++ b/ld/testsuite/ld-loongarch-elf/desc-ie.d
@@ -8,7 +8,7 @@
 Disassembly of section .text:
 
 [0-9a-f]+ <fn1>:
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, .*
- +[0-9a-f]+:	28cd0084 	ld.d        	\$a0, \$a0, .*
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, .*
- +[0-9a-f]+:	28cd0084 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
diff --git a/ld/testsuite/ld-loongarch-elf/ld-loongarch-elf.exp b/ld/testsuite/ld-loongarch-elf/ld-loongarch-elf.exp
index 3c8e9195..5d109a4d 100644
--- a/ld/testsuite/ld-loongarch-elf/ld-loongarch-elf.exp
+++ b/ld/testsuite/ld-loongarch-elf/ld-loongarch-elf.exp
@@ -130,7 +130,9 @@ if [istarget "loongarch64-*-*"] {
 if [istarget "loongarch64-*-*"] {
   if [check_shared_lib_support] {
     run_dump_test "desc-ie"
+    run_dump_test "desc-ie-reloc"
     run_dump_test "tlsdesc-dso"
+    run_dump_test "tlsdesc-dso-reloc"
     run_dump_test "desc-norelax"
     run_dump_test "desc-relax"
     run_dump_test "data-got"
diff --git a/ld/testsuite/ld-loongarch-elf/tlsdesc-dso-reloc.d b/ld/testsuite/ld-loongarch-elf/tlsdesc-dso-reloc.d
new file mode 100644
index 00000000..d5afa7c3
--- /dev/null
+++ b/ld/testsuite/ld-loongarch-elf/tlsdesc-dso-reloc.d
@@ -0,0 +1,9 @@
+#source: tlsdesc-dso.s
+#as:
+#ld: -shared -z norelro --hash-style=both
+#readelf: -Wr
+
+#failif
+#...
+.* +R_LARCH_NONE +.*
+#...
diff --git a/ld/testsuite/ld-loongarch-elf/tlsdesc-dso.d b/ld/testsuite/ld-loongarch-elf/tlsdesc-dso.d
index 8f66302f..d6997ec9 100644
--- a/ld/testsuite/ld-loongarch-elf/tlsdesc-dso.d
+++ b/ld/testsuite/ld-loongarch-elf/tlsdesc-dso.d
@@ -9,52 +9,52 @@
 Disassembly of section .text:
 
 [0-9a-f]+ <fun_gl1>:
- +[0-9a-f]+:	18021584 	pcaddi      	\$a0, 4268
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28dd4084 	ld.d        	\$a0, \$a0, 1872
- +[0-9a-f]+:	18021364 	pcaddi      	\$a0, 4251
- +[0-9a-f]+:	180213c4 	pcaddi      	\$a0, 4254
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28dc0084 	ld.d        	\$a0, \$a0, 1792
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28dc0084 	ld.d        	\$a0, \$a0, 1792
- +[0-9a-f]+:	18021364 	pcaddi      	\$a0, 4251
- +[0-9a-f]+:	180213c4 	pcaddi      	\$a0, 4254
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28dce084 	ld.d        	\$a0, \$a0, 1848
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
 
 [0-9a-f]+ <fun_lo>:
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28daa084 	ld.d        	\$a0, \$a0, 1704
- +[0-9a-f]+:	18020de4 	pcaddi      	\$a0, 4207
- +[0-9a-f]+:	18020f04 	pcaddi      	\$a0, 4216
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
- +[0-9a-f]+:	18020e24 	pcaddi      	\$a0, 4209
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28db4084 	ld.d        	\$a0, \$a0, 1744
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28db4084 	ld.d        	\$a0, \$a0, 1744
- +[0-9a-f]+:	18020f44 	pcaddi      	\$a0, 4218
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
- +[0-9a-f]+:	18020e64 	pcaddi      	\$a0, 4211
- +[0-9a-f]+:	1a000084 	pcalau12i   	\$a0, 4
- +[0-9a-f]+:	28dba084 	ld.d        	\$a0, \$a0, 1768
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcalau12i   	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$a0, \$a0, .*
 
 [0-9a-f]+ <fun_external>:
- +[0-9a-f]+:	18020ec4 	pcaddi      	\$a0, 4214
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
 
 [0-9a-f]+ <fun_hidden>:
- +[0-9a-f]+:	18021224 	pcaddi      	\$a0, 4241
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
- +[0-9a-f]+:	18021144 	pcaddi      	\$a0, 4234
- +[0-9a-f]+:	28c00081 	ld.d        	\$ra, \$a0, 0
- +[0-9a-f]+:	4c000021 	jirl        	\$ra, \$ra, 0
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	pcaddi      	\$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	ld.d        	\$ra, \$a0, .*
+ +[0-9a-f]+:	[0-9a-f]+ 	jirl        	\$ra, \$ra, .*
-- 
2.33.0