LoongArch: Default to a maximum page size of 64KiB

As per the spec (Section 7.5.10, LoongArch Reference Manual Vol. 1),
LoongArch machines are not limited in page size choices, and currently
page sizes of 4KiB, 16KiB and 64KiB are supported by mainline Linux.
While 16KiB is the most common, the current BFD code says it is the
maximum; this is not correct, and as an effect, almost all existing
binaries are incompatible with a 64KiB kernel because the sections are
not sufficiently aligned, while being totally fine otherwise.
This is needlessly complicating integration testing [1].

This patch fixes the inconsistency, and also brings BFD behavior in line
with that of LLD [2].

[1] https://github.com/loongson-community/discussions/issues/47
[2] https://github.com/llvm/llvm-project/blob/llvmorg-19.1.0/lld/ELF/Arch/LoongArch.cpp#L174-L183

bfd/
	* elfnn-loongarch.c (ELF_MAXPAGESIZE): Bump to 64KiB.
	(ELF_MINPAGESIZE): Define as 4KiB.
	(ELF_COMMONPAGESIZE): Define as 16KiB.

ld/
	* testsuite/ld-loongarch-elf/64_pcrel.d: Update assertions after
	changing the target max page size to 64KiB.
	* testsuite/ld-loongarch-elf/data-got.d: Likewise.
	* testsuite/ld-loongarch-elf/desc-relex.d: Likewise.
	* testsuite/ld-loongarch-elf/relax-align-ignore-start.d: Likewise.
	* testsuite/ld-loongarch-elf/tlsdesc_abs.d: Make the fuzzy match work
	as intended by not checking exact instruction words.
	* testsuite/ld-loongarch-elf/tlsdesc_extreme.d: Likewise.

Signed-off-by: WANG Xuerui <git@xen0n.name>

9 files changed, 34 insertions, 15 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 8360590..3879b81 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2024-10-18  WANG Xuerui <git@xen0n.name>
+
+	* elfnn-loongarch.c (ELF_MAXPAGESIZE): Bump to 64KiB.
+	(ELF_MINPAGESIZE): Define as 4KiB.
+	(ELF_COMMONPAGESIZE): Define as 16KiB.
+
 2024-07-20  Nick Clifton  <nickc@redhat.com>
 
 	* 2.43 branch point.
diff --git a/bfd/elfnn-loongarch.c b/bfd/elfnn-loongarch.c
index 7451153..2ce5f73 100644
--- a/bfd/elfnn-loongarch.c
+++ b/bfd/elfnn-loongarch.c
@@ -6270,7 +6270,9 @@ elf_loongarch64_hash_symbol (struct elf_link_hash_entry *h)
 #define ELF_ARCH bfd_arch_loongarch
 #define ELF_TARGET_ID LARCH_ELF_DATA
 #define ELF_MACHINE_CODE EM_LOONGARCH
-#define ELF_MAXPAGESIZE 0x4000
+#define ELF_MINPAGESIZE 0x1000
+#define ELF_MAXPAGESIZE 0x10000
+#define ELF_COMMONPAGESIZE 0x4000
 #define bfd_elfNN_bfd_reloc_type_lookup loongarch_reloc_type_lookup
 #define bfd_elfNN_bfd_link_hash_table_create				  \
   loongarch_elf_link_hash_table_create
diff --git a/ld/ChangeLog b/ld/ChangeLog
index 55c8d77..9915145 100644
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,14 @@
+2024-10-18  WANG Xuerui <git@xen0n.name>
+
+	* testsuite/ld-loongarch-elf/64_pcrel.d: Update assertions after
+	changing the target max page size to 64KiB.
+	* testsuite/ld-loongarch-elf/data-got.d: Likewise.
+	* testsuite/ld-loongarch-elf/desc-relex.d: Likewise.
+	* testsuite/ld-loongarch-elf/relax-align-ignore-start.d: Likewise.
+	* testsuite/ld-loongarch-elf/tlsdesc_abs.d: Make the fuzzy match work
+	as intended by not checking exact instruction words.
+	* testsuite/ld-loongarch-elf/tlsdesc_extreme.d: Likewise.
+
 2024-07-20  Nick Clifton  <nickc@redhat.com>
 
 	* 2.43 branch point.
diff --git a/ld/testsuite/ld-loongarch-elf/64_pcrel.d b/ld/testsuite/ld-loongarch-elf/64_pcrel.d
index 2ea063b..1f4664e 100644
--- a/ld/testsuite/ld-loongarch-elf/64_pcrel.d
+++ b/ld/testsuite/ld-loongarch-elf/64_pcrel.d
@@ -1,4 +1,4 @@
 #...
-.*0xffffbffc.*
+.*0xfffefffc.*
 .*0xffffffff.*
 #pass
diff --git a/ld/testsuite/ld-loongarch-elf/data-got.d b/ld/testsuite/ld-loongarch-elf/data-got.d
index a754478..4a26c72 100644
--- a/ld/testsuite/ld-loongarch-elf/data-got.d
+++ b/ld/testsuite/ld-loongarch-elf/data-got.d
@@ -8,7 +8,7 @@
 #skip: loongarch32-*-*
 
 #...
-  GNU_RELRO      0x003c10 0x0000000000007c10 0x0000000000007c10 0x0003f0 0x0003f0 R   0x1
+  GNU_RELRO      0x00fc10 0x000000000001fc10 0x000000000001fc10 0x0003f0 0x0003f0 R   0x1
 #...
    01     .dynamic .got .got.plt .data 
 #...
diff --git a/ld/testsuite/ld-loongarch-elf/desc-relax.d b/ld/testsuite/ld-loongarch-elf/desc-relax.d
index c885953..48f2d1e 100644
--- a/ld/testsuite/ld-loongarch-elf/desc-relax.d
+++ b/ld/testsuite/ld-loongarch-elf/desc-relax.d
@@ -9,7 +9,7 @@
 Disassembly of section .text:
 
 0+188 <.*>:
- 188:	18020844 	pcaddi      	\$a0, 4162
+ 188:	18080844 	pcaddi      	\$a0, 16450
  18c:	28c00081 	ld.d        	\$ra, \$a0, 0
  190:	4c000021 	jirl        	\$ra, \$ra, 0
  194:	0010888c 	add.d       	\$t0, \$a0, \$tp
diff --git a/ld/testsuite/ld-loongarch-elf/relax-align-ignore-start.d b/ld/testsuite/ld-loongarch-elf/relax-align-ignore-start.d
index 939cf42..70763ff 100644
--- a/ld/testsuite/ld-loongarch-elf/relax-align-ignore-start.d
+++ b/ld/testsuite/ld-loongarch-elf/relax-align-ignore-start.d
@@ -12,5 +12,5 @@ Disassembly of section bbb:
 0000000120000080 <bbb>:
 [ 	]+120000080:[ 	]+4c000020[ 	]+ret
 Disassembly of section ccc:
-0000000120000090 <__bss_start-0x4004>:
+0000000120000090 <__bss_start-0x10004>:
 [ 	]+120000090:[ 	]+4c000020[ 	]+ret
diff --git a/ld/testsuite/ld-loongarch-elf/tlsdesc_abs.d b/ld/testsuite/ld-loongarch-elf/tlsdesc_abs.d
index 62f5a2a..7e23454 100644
--- a/ld/testsuite/ld-loongarch-elf/tlsdesc_abs.d
+++ b/ld/testsuite/ld-loongarch-elf/tlsdesc_abs.d
@@ -9,15 +9,15 @@
 Disassembly of section .text:
 
 0+120000100 <.*>:
-   120000100:	14400084 	lu12i.w     	\$a0, .*
-   120000104:	03850084 	ori         	\$a0, \$a0, .*
-   120000108:	16000024 	lu32i.d     	\$a0, .*
+   120000100:	........ 	lu12i.w     	\$a0, .*
+   120000104:	........ 	ori         	\$a0, \$a0, .*
+   120000108:	........ 	lu32i.d     	\$a0, .*
    12000010c:	03000084 	lu52i.d     	\$a0, \$a0, 0
    120000110:	28c00081 	ld.d        	\$ra, \$a0, 0
    120000114:	4c000021 	jirl        	\$ra, \$ra, 0
-   120000118:	14400084 	lu12i.w     	\$a0, .*
-   12000011c:	03850084 	ori         	\$a0, \$a0, .*
-   120000120:	16000024 	lu32i.d     	\$a0, .*
+   120000118:	........ 	lu12i.w     	\$a0, .*
+   12000011c:	........ 	ori         	\$a0, \$a0, .*
+   120000120:	........ 	lu32i.d     	\$a0, .*
    120000124:	03000084 	lu52i.d     	\$a0, \$a0, 0
    120000128:	28c00081 	ld.d        	\$ra, \$a0, 0
    12000012c:	4c000021 	jirl        	\$ra, \$ra, 0
diff --git a/ld/testsuite/ld-loongarch-elf/tlsdesc_extreme.d b/ld/testsuite/ld-loongarch-elf/tlsdesc_extreme.d
index 5517999..fbc1d94 100644
--- a/ld/testsuite/ld-loongarch-elf/tlsdesc_extreme.d
+++ b/ld/testsuite/ld-loongarch-elf/tlsdesc_extreme.d
@@ -9,15 +9,15 @@
 Disassembly of section .text:
 
 0+120000100 <.*>:
-   120000100:	1a000084 	pcalau12i   	\$a0, .*
-   120000104:	02c52001 	li.d        	\$ra, .*
+   120000100:	........ 	pcalau12i   	\$a0, .*
+   120000104:	........ 	li.d        	\$ra, .*
    120000108:	16000001 	lu32i.d     	\$ra, 0
    12000010c:	03000021 	lu52i.d     	\$ra, \$ra, 0
    120000110:	00108484 	add.d       	\$a0, \$a0, \$ra
    120000114:	28c00081 	ld.d        	\$ra, \$a0, 0
    120000118:	4c000021 	jirl        	\$ra, \$ra, 0
-   12000011c:	1a000084 	pcalau12i   	\$a0, .*
-   120000120:	02c5200d 	li.d        	\$t1, .*
+   12000011c:	........ 	pcalau12i   	\$a0, .*
+   120000120:	........ 	li.d        	\$t1, .*
    120000124:	1600000d 	lu32i.d     	\$t1, 0
    120000128:	030001ad 	lu52i.d     	\$t1, \$t1, 0
    12000012c:	0010b484 	add.d       	\$a0, \$a0, \$t1