Backport commits 969f5c0e1 (LoongArch: gas: Add support for s9 register) and a0aa6f4ab (LoongArch: ld: Add support for TLS LE symbol with addend) to 2.42 branch.

bfd/elfnn-loongarch.c

@@ -3496,14 +3496,12 @@ loongarch_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	    relocation += rel->r_addend;
 
 	  RELOCATE_CALC_PC32_HI20 (relocation, pc);
-
 	  break;
 
 	case R_LARCH_TLS_LE_HI20_R:
+	  relocation += rel->r_addend;
 	  relocation -= elf_hash_table (info)->tls_sec->vma;
-
 	  RELOCATE_TLS_TP32_HI20 (relocation);
-
 	  break;
 
 	case R_LARCH_PCALA_LO12:
@@ -3684,6 +3682,7 @@ loongarch_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	case R_LARCH_TLS_LE64_HI12:
 	  BFD_ASSERT (resolved_local && elf_hash_table (info)->tls_sec);
 
+	  relocation += rel->r_addend;
 	  relocation -= elf_hash_table (info)->tls_sec->vma;
 	  break;
 

gas/config/tc-loongarch.c

@@ -316,8 +316,11 @@ loongarch_after_parse_args ()
   /* Init ilp32/lp64 registers alias.  */
   r_abi_names = loongarch_r_alias;
   for (i = 0; i < ARRAY_SIZE (loongarch_r_alias); i++)
-    str_hash_insert (r_htab, loongarch_r_alias[i], (void *) (i + 1),
-	0);
+    str_hash_insert (r_htab, loongarch_r_alias[i], (void *) (i + 1), 0);
+
+  for (i = 0; i < ARRAY_SIZE (loongarch_r_alias_1); i++)
+    str_hash_insert (r_htab, loongarch_r_alias_1[i], (void *) (i + 1), 0);
+
   for (i = 0; i < ARRAY_SIZE (loongarch_r_alias_deprecated); i++)
     str_hash_insert (r_deprecated_htab, loongarch_r_alias_deprecated[i],
 	(void *) (i + 1), 0);

gas/testsuite/gas/loongarch/loongarch.exp

@@ -31,4 +31,5 @@ if [istarget loongarch*-*-*] {
     }
 
   run_list_test "align"
+  run_list_test "reg-s9"
 }

gas/testsuite/gas/loongarch/reg-s9.l

@@ -0,0 +1 @@
+# No warning or error expected.

gas/testsuite/gas/loongarch/reg-s9.s

@@ -0,0 +1,2 @@
+# Add support for $s9 register
+addi.d $t0, $s9, 0

include/opcode/loongarch.h

@@ -196,6 +196,7 @@ dec2 : [1-9][0-9]?
 
   extern const char *const loongarch_r_normal_name[32];
   extern const char *const loongarch_r_alias[32];
+  extern const char *const loongarch_r_alias_1[32];
   extern const char *const loongarch_r_alias_deprecated[32];
   extern const char *const loongarch_f_normal_name[32];
   extern const char *const loongarch_f_alias[32];

ld/testsuite/ld-loongarch-elf/ld-loongarch-elf.exp

@@ -34,6 +34,7 @@ if [istarget "loongarch64-*-*"] {
     run_dump_test "local-ifunc-reloc"
     run_dump_test "anno-sym"
     run_dump_test "pcala64"
+    run_dump_test "tls-le"
 }
 
 if [istarget "loongarch32-*-*"] {

ld/testsuite/ld-loongarch-elf/tls-le.d

@@ -0,0 +1,14 @@
+#ld: --no-relax
+#objdump: -d
+
+.*:[    ]+file format .*
+
+
+Disassembly of section .text:
+
+[ 	]*00000001200000e8 <_start>:
+[ 	]+1200000e8:[ 	]+14000004[ 	]+lu12i.w[ 	]+\$a0, 0
+[ 	]+1200000ec:[ 	]+03802085[ 	]+ori[ 	]+\$a1, \$a0, 0x8
+[ 	]+1200000f0:[ 	]+14000004[ 	]+lu12i.w[ 	]+\$a0, 0
+[ 	]+1200000f4:[ 	]+02c02085[ 	]+addi.d[ 	]+\$a1, \$a0, 8
+[ 	]+1200000f8:[ 	]+4c000020[ 	]+ret

ld/testsuite/ld-loongarch-elf/tls-le.s

@@ -0,0 +1,18 @@
+# Support for TLS LE symbols with addend
+	.text
+	.globl	a
+	.section	.tdata,"awT",@progbits
+	.align	2
+	.type	a, @object
+	.size	a, 4
+a:
+	.word	123
+
+	.text
+	.global _start
+_start:
+	lu12i.w $r4,%le_hi20(a + 0x8)
+	ori	$r5,$r4,%le_lo12(a + 0x8)
+	lu12i.w $r4,%le_hi20_r(a + 0x8)
+	addi.d	$r5,$r4,%le_lo12_r(a + 0x8)
+	jr $ra

opcodes/loongarch-opc.c

@@ -49,6 +49,15 @@ const char *const loongarch_r_alias[32] =
   "$s1",   "$s2", "$s3", "$s4", "$s5", "$s6", "$s7", "$s8",
 };
 
+/* Add support for $s9.  */
+const char *const loongarch_r_alias_1[32] =
+{
+  "", "", "", "", "", "", "", "",
+  "", "", "", "", "", "", "", "",
+  "", "", "", "", "", "", "$s9", "",
+  "", "", "", "", "", "", "", "",
+};
+
 const char *const loongarch_r_alias_deprecated[32] =
 {
   "", "", "", "", "$v0", "$v1", "", "", "", "", "", "", "", "", "", "",