aarch64: Test DT_RELR with discarded sections

5 files changed, 114 insertions, 0 deletions

diff --git a/ld/testsuite/ld-aarch64/aarch64-elf.exp b/ld/testsuite/ld-aarch64/aarch64-elf.exp
index 38929ff..0e70ca3 100644
--- a/ld/testsuite/ld-aarch64/aarch64-elf.exp
+++ b/ld/testsuite/ld-aarch64/aarch64-elf.exp
@@ -475,6 +475,8 @@ run_dump_test_lp64 "relr-got-pie"
 run_dump_test_lp64 "relr-got-shared"
 run_dump_test_lp64 "relr-text-pie"
 run_dump_test_lp64 "relr-text-shared"
+run_dump_test_lp64 "relr-discard-pie"
+run_dump_test_lp64 "relr-discard-shared"
 
 if { ![skip_sframe_tests] } {
   run_dump_test "sframe-simple-1"
diff --git a/ld/testsuite/ld-aarch64/relr-discard-pie.d b/ld/testsuite/ld-aarch64/relr-discard-pie.d
new file mode 100644
index 0000000..7e7f341
--- /dev/null
+++ b/ld/testsuite/ld-aarch64/relr-discard-pie.d
@@ -0,0 +1,18 @@
+#source: relr-discard.s
+#ld: -pie --no-apply-dynamic-relocs -z pack-relative-relocs -T relr-discard.ld
+#readelf: -rW
+
+# Note: There are unnecessary GOT entries and *_NONE relocations
+# for those GOT entries and discarded locations, this is bug 31850.
+
+Relocation section '\.rela\.dyn' at offset 0x1.* contains 4 entries:
+    Offset             Info             Type               Symbol's Value  Symbol's Name \+ Addend
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+
+Relocation section '\.relr\.dyn' at offset 0x1.* contains 2 entries which relocate 2 locations:
+Index: Entry            Address           Symbolic Address
+0000:  0000000000020008 0000000000020008  _GLOBAL_OFFSET_TABLE_ \+ 0x8
+0001:  0000000000000003 0000000000020010  _GLOBAL_OFFSET_TABLE_ \+ 0x10
diff --git a/ld/testsuite/ld-aarch64/relr-discard-shared.d b/ld/testsuite/ld-aarch64/relr-discard-shared.d
new file mode 100644
index 0000000..9260a6d
--- /dev/null
+++ b/ld/testsuite/ld-aarch64/relr-discard-shared.d
@@ -0,0 +1,18 @@
+#source: relr-discard.s
+#ld: -shared --no-apply-dynamic-relocs -z pack-relative-relocs -T relr-discard.ld
+#readelf: -rW
+
+# Note: There are unnecessary GOT entries and *_NONE relocations
+# for those GOT entries and discarded locations, this is bug 31850.
+
+Relocation section '\.rela\.dyn' at offset 0x1.* contains 5 entries:
+    Offset             Info             Type               Symbol's Value  Symbol's Name \+ Addend
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000000000  0000000000000000 R_AARCH64_NONE                            0
+0000000000020010  .* R_AARCH64_GLOB_DAT     000000000001000c sym_global \+ 0
+
+Relocation section '\.relr\.dyn' at offset 0x1.* contains 1 entry which relocates 1 location:
+Index: Entry            Address           Symbolic Address
+0000:  0000000000020008 0000000000020008  _GLOBAL_OFFSET_TABLE_ \+ 0x8
diff --git a/ld/testsuite/ld-aarch64/relr-discard.ld b/ld/testsuite/ld-aarch64/relr-discard.ld
new file mode 100644
index 0000000..288ba23
--- /dev/null
+++ b/ld/testsuite/ld-aarch64/relr-discard.ld
@@ -0,0 +1,13 @@
+OUTPUT_ARCH(aarch64)
+ENTRY(_start)
+SECTIONS
+{
+  /DISCARD/ : { *(.discard.*) }
+
+  . = 0x10000;
+  .text : { *(.text) }
+  . = 0x20000;
+  .got  : { *(.got) *(.got.plt)}
+  . = 0x30000;
+  .data : { *(.data) *(.data.*) }
+}
diff --git a/ld/testsuite/ld-aarch64/relr-discard.s b/ld/testsuite/ld-aarch64/relr-discard.s
new file mode 100644
index 0000000..0ed9b4a
--- /dev/null
+++ b/ld/testsuite/ld-aarch64/relr-discard.s
@@ -0,0 +1,63 @@
+// Test DT_RELR with references in discarded sections.
+
+.text
+.p2align 3
+.global _start
+_start:
+	nop
+
+sym_local:
+	nop
+
+.global sym_hidden
+.hidden sym_hidden
+sym_hidden:
+	nop
+
+.global sym_global
+sym_global:
+	nop
+
+.global sym_global_abs
+.set sym_global_abs, 42
+
+.global sym_weak_undef
+.weak sym_weak_undef
+
+.section .discard.got_local,"ax"
+	adrp	x0, :got:sym_local
+	ldr	x0, [x0, :got_lo12:sym_local]
+
+.section .discard.got_global,"ax"
+	adrp	x0, :got:sym_global
+	ldr	x0, [x0, :got_lo12:sym_global]
+
+.section .discard.local,"a"
+.p2align 1
+discard_local:
+.xword sym_local
+
+.section .discard.hidden,"a"
+.p2align 1
+discard_hidden:
+.xword sym_hidden
+
+.section .discard.global,"a"
+.p2align 1
+discard_global:
+.xword sym_global
+
+.section .discard.global_abs,"a"
+.p2align 1
+discard_global_abs:
+.xword sym_global_abs
+
+.section .discard.weak_undef,"a"
+.p2align 1
+discard_weak_undef:
+.xword sym_weak_undef
+
+.section .discard._DYNAMIC,"a"
+.p2align 1
+discard_DYNAMIC:
+.xword _DYNAMIC