MIPS: Fix linker for REL TLS HI16/LO16 relocsHEADmaster

With REL targets TLS HI16/LO16 relocations need to combine the low part
with the high part just as all the remaining HI16/LO16 relocations, so
as to determine the borrow in calculation correctly.

2025-07-12  Alan Modra  <amodra@gmail.com>

bfd/
	PR 19977
	* elfxx-mips.c (tls_hi16_reloc_p): New function.
	(mips_elf_add_lo16_rel_addend): Handle tls relocs.
	(_bfd_mips_elf_relocate_section): Likewise.

2025-07-12  Maciej W. Rozycki  <macro@orcam.me.uk>

ld/
	PR 19977
	* testsuite/ld-mips-elf/pr19977.d: New test.
	* testsuite/ld-mips-elf/pr19977-mips16.d: New test.
	* testsuite/ld-mips-elf/pr19977-micromips.d: New test.
	* testsuite/ld-mips-elf/pr19977-r.d: New test.
	* testsuite/ld-mips-elf/pr19977-r-mips16.d: New test.
	* testsuite/ld-mips-elf/pr19977-r-micromips.d: New test.
	* testsuite/ld-mips-elf/pr19977-r.s: New test source.
	* testsuite/ld-mips-elf/pr19977.ld: New test linker script.
	* testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.

9 files changed, 145 insertions, 0 deletions

diff --git a/ld/testsuite/ld-mips-elf/mips-elf.exp b/ld/testsuite/ld-mips-elf/mips-elf.exp
index 6fc960d..e8a1d42 100644
--- a/ld/testsuite/ld-mips-elf/mips-elf.exp
+++ b/ld/testsuite/ld-mips-elf/mips-elf.exp
@@ -867,6 +867,16 @@ run_dump_test_n64 "pcrel-hilo-srec" \
 	[list [list name (n64)] \
 	      [list objdump [expr { [istarget *el-*-*] ? "-EL" : "-EB" }]]]
 
+run_dump_test_o32 "pr19977"
+run_dump_test_n32 "pr19977" [list [list name (n32)]]
+run_dump_test_o32 "pr19977-mips16" noarch
+run_dump_test_n32 "pr19977-mips16" [list noarch [list name (n32)]]
+run_dump_test_o32 "pr19977-micromips" noarch
+run_dump_test_n32 "pr19977-micromips" [list noarch [list name (n32)]]
+run_dump_test_o32 "pr19977-r"
+run_dump_test_o32 "pr19977-r-mips16" noarch
+run_dump_test_o32 "pr19977-r-micromips" noarch
+
 if { $linux_gnu } {
     run_dump_test_n32 "textrel-1"
     run_dump_test "got-page-1"
diff --git a/ld/testsuite/ld-mips-elf/pr19977-micromips.d b/ld/testsuite/ld-mips-elf/pr19977-micromips.d
new file mode 100644
index 0000000..021b29c
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977-micromips.d
@@ -0,0 +1,25 @@
+#name: pr19977 microMIPS
+#source: ../../../gas/testsuite/gas/mips/pr19977.s
+#as: -mmicromips -march=mips64r2
+#objdump: -d
+#ld: -Tpr19977.ld -e 0 -N
+#notarget: mips*el-ps2-elf*
+
+.*:     file format elf.*mips.*
+
+Disassembly of section \.text:
+
+10000000 <[^>]*>:
+10000000:	3060 1122 	li	v1,4386
+10000004:	0063 8000 	sll	v1,v1,0x10
+10000008:	3063 2988 	addiu	v1,v1,10632
+1000000c:	3060 1122 	li	v1,4386
+10000010:	0063 8000 	sll	v1,v1,0x10
+10000014:	3063 1988 	addiu	v1,v1,6536
+10000018:	3060 1122 	li	v1,4386
+1000001c:	0063 8000 	sll	v1,v1,0x10
+10000020:	3063 a988 	addiu	v1,v1,-22136
+10000024:	3060 1122 	li	v1,4386
+10000028:	0063 8000 	sll	v1,v1,0x10
+1000002c:	3063 9988 	addiu	v1,v1,-26232
+#pass
diff --git a/ld/testsuite/ld-mips-elf/pr19977-mips16.d b/ld/testsuite/ld-mips-elf/pr19977-mips16.d
new file mode 100644
index 0000000..c927357
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977-mips16.d
@@ -0,0 +1,24 @@
+#name: pr19977 MIPS16
+#source: ../../../gas/testsuite/gas/mips/pr19977.s
+#as: -mips16 -march=mips3
+#objdump: -d
+#ld: -Tpr19977.ld -e 0 -N
+
+.*:     file format elf.*mips.*
+
+Disassembly of section \.text:
+
+10000000 <[^>]*>:
+10000000:	f122 6b02 	li	v1,4386
+10000004:	f400 3360 	sll	v1,16
+10000008:	f185 4b08 	addiu	v1,10632
+1000000c:	f122 6b02 	li	v1,4386
+10000010:	f400 3360 	sll	v1,16
+10000014:	f183 4b08 	addiu	v1,6536
+10000018:	f122 6b02 	li	v1,4386
+1000001c:	f400 3360 	sll	v1,16
+10000020:	f195 4b08 	addiu	v1,-22136
+10000024:	f122 6b02 	li	v1,4386
+10000028:	f400 3360 	sll	v1,16
+1000002c:	f193 4b08 	addiu	v1,-26232
+#pass
diff --git a/ld/testsuite/ld-mips-elf/pr19977-r-micromips.d b/ld/testsuite/ld-mips-elf/pr19977-r-micromips.d
new file mode 100644
index 0000000..db99b97
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977-r-micromips.d
@@ -0,0 +1,8 @@
+#name: pr19977 microMIPS -r
+#source: pr19977-r.s
+#source: ../../../gas/testsuite/gas/mips/pr19977.s
+#as: -mmicromips -march=mips64r2
+#objdump: -dr
+#ld: -r
+#notarget: mips*el-ps2-elf*
+#dump: pr19977-r.d
diff --git a/ld/testsuite/ld-mips-elf/pr19977-r-mips16.d b/ld/testsuite/ld-mips-elf/pr19977-r-mips16.d
new file mode 100644
index 0000000..dafa793
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977-r-mips16.d
@@ -0,0 +1,7 @@
+#name: pr19977 MIPS16 -r
+#source: pr19977-r.s
+#source: ../../../gas/testsuite/gas/mips/pr19977.s
+#as: -mips16 -march=mips3
+#objdump: -dr
+#ld: -r
+#dump: pr19977-r.d
diff --git a/ld/testsuite/ld-mips-elf/pr19977-r.d b/ld/testsuite/ld-mips-elf/pr19977-r.d
new file mode 100644
index 0000000..166194b
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977-r.d
@@ -0,0 +1,32 @@
+#name: pr19977 MIPS -r
+#source: pr19977-r.s
+#source: ../../../gas/testsuite/gas/mips/pr19977.s
+#objdump: -dr
+#ld: -r
+
+.*
+
+Disassembly of section \.text:
+
+0+ <foo>:
+   0:	.*	li	v1,4387
+			0: R_(|MICRO)MIPS(|16)_TLS_TPREL_HI16	\$loc0
+   4:	.*	sll	.*
+   8:	.*	addiu	v1(|,v1),-26232
+			8: R_(|MICRO)MIPS(|16)_TLS_TPREL_LO16	\$loc0
+   c:	.*	li	v1,4387
+			c: R_(|MICRO)MIPS(|16)_TLS_DTPREL_HI16	\$loc0
+  10:	.*	sll	.*
+  14:	.*	addiu	v1(|,v1),-26232
+			14: R_(|MICRO)MIPS(|16)_TLS_DTPREL_LO16	\$loc0
+  18:	.*	li	v1,4387
+			18: R_(|MICRO)MIPS(|16)_TLS_TPREL_HI16	\.tdata
+  1c:	.*	sll	.*
+  20:	.*	addiu	v1(|,v1),-30328
+			20: R_(|MICRO)MIPS(|16)_TLS_TPREL_LO16	\.tdata
+  24:	.*	li	v1,4387
+			24: R_(|MICRO)MIPS(|16)_TLS_DTPREL_HI16	\.tdata
+  28:	.*	sll	.*
+  2c:	.*	addiu	v1(|,v1),-30328
+			2c: R_(|MICRO)MIPS(|16)_TLS_DTPREL_LO16	\.tdata
+#pass
diff --git a/ld/testsuite/ld-mips-elf/pr19977-r.s b/ld/testsuite/ld-mips-elf/pr19977-r.s
new file mode 100644
index 0000000..4a46b30
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977-r.s
@@ -0,0 +1,2 @@
+ .section .tdata,"awT",%progbits
+ .space 28672
diff --git a/ld/testsuite/ld-mips-elf/pr19977.d b/ld/testsuite/ld-mips-elf/pr19977.d
new file mode 100644
index 0000000..145f697
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977.d
@@ -0,0 +1,23 @@
+#name: pr19977 MIPS
+#source: ../../../gas/testsuite/gas/mips/pr19977.s
+#objdump: -d
+#ld: -Tpr19977.ld -e 0 -N
+
+.*:     file format elf.*mips.*
+
+Disassembly of section \.text:
+
+10000000 <[^>]*>:
+10000000:	24031122 	li	v1,4386
+10000004:	00031c00 	sll	v1,v1,0x10
+10000008:	24632988 	addiu	v1,v1,10632
+1000000c:	24031122 	li	v1,4386
+10000010:	00031c00 	sll	v1,v1,0x10
+10000014:	24631988 	addiu	v1,v1,6536
+10000018:	24031122 	li	v1,4386
+1000001c:	00031c00 	sll	v1,v1,0x10
+10000020:	2463a988 	addiu	v1,v1,-22136
+10000024:	24031122 	li	v1,4386
+10000028:	00031c00 	sll	v1,v1,0x10
+1000002c:	24639988 	addiu	v1,v1,-26232
+#pass
diff --git a/ld/testsuite/ld-mips-elf/pr19977.ld b/ld/testsuite/ld-mips-elf/pr19977.ld
new file mode 100644
index 0000000..0b2f7c1
--- /dev/null
+++ b/ld/testsuite/ld-mips-elf/pr19977.ld
@@ -0,0 +1,14 @@
+MEMORY
+{
+  text (rx) : ORIGIN = 0x10000000, LENGTH = 0x40000
+  data (w) : ORIGIN = 0x34560000, LENGTH = 0x40000
+}
+SECTIONS
+{
+  .text : { *(.text) } >text
+  .tdata : { *(.tdata) } >data
+  .symtab : { *(.symtab) }
+  .strtab : { *(.strtab) }
+  .shstrtab : { *(.shstrtab) }
+  /DISCARD/ : { *(*) }
+}