From d3b10ee787216d304a858246656ed2fdaecdfd93 Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Fri, 10 Jul 2020 10:48:45 +0930
Subject: PowerPC64 ld --no-power10-stubs

Needed for libraries that use ifuncs or other means to support
cpu-optimized versions of functions, some power10, some not, and those
functions make calls using linkage stubs.

bfd/
	* elf64-ppc.h (struct ppc64_elf_params): Add power10_stubs.
	* elf64-ppc.c (struct ppc_link_hash_table): Delete
	power10_stubs.
	(ppc64_elf_check_relocs): Adjust setting of power10_stubs.
	(plt_stub_size, ppc_build_one_stub, ppc_size_one_stub): Adjust
	uses of power10_stubs.
ld/
	* emultempl/ppc64elf.em (params): Init new field.
	(enum ppc64_opt): Add OPTION_POWER10_STUBS and OPTION_NO_POWER10_STUBS.
	(PARSE_AND_LIST_LONGOPTS): Support --power10-stubs and
	--no-power10-stubs.
	(PARSE_AND_LIST_OPTIONS, PARSE_AND_LIST_ARGS_CASES): Likewise.
	* testsuite/ld-powerpc/callstub-3.d: New test.
	* testsuite/ld-powerpc/powerpc.exp: Run it.
---
 ld/testsuite/ld-powerpc/callstub-3.d | 38 ++++++++++++++++++++++++++++++++++++
 ld/testsuite/ld-powerpc/powerpc.exp  |  1 +
 2 files changed, 39 insertions(+)
 create mode 100644 ld/testsuite/ld-powerpc/callstub-3.d

(limited to 'ld/testsuite/ld-powerpc')

diff --git a/ld/testsuite/ld-powerpc/callstub-3.d b/ld/testsuite/ld-powerpc/callstub-3.d
new file mode 100644
index 0000000..06cbfbd
--- /dev/null
+++ b/ld/testsuite/ld-powerpc/callstub-3.d
@@ -0,0 +1,38 @@
+#source: callstub-1.s
+#as: -a64 -mpower10
+#ld: -melf64ppc -shared --plt-align=0 --hash-style=gnu --no-power10-stubs
+#objdump: -dr -Mpower10
+
+.*
+
+Disassembly of section \.text:
+
+.*\.plt_call\.f1>:
+.*:	(f8 41 00 18|18 00 41 f8) 	std     r2,24\(r1\)
+.*:	(7d 88 02 a6|a6 02 88 7d) 	mflr    r12
+.*:	(42 9f 00 05|05 00 9f 42) 	bcl     .*
+.*:	(7d 68 02 a6|a6 02 68 7d) 	mflr    r11
+.*:	(7d 88 03 a6|a6 03 88 7d) 	mtlr    r12
+.*:	(3d 8b 00 01|01 00 8b 3d) 	addis   r12,r11,1
+.*:	(e9 8c .. ..|.. .. 8c e9) 	ld      r12,.*\(r12\)
+.*:	(7d 89 03 a6|a6 03 89 7d) 	mtctr   r12
+.*:	(4e 80 04 20|20 04 80 4e) 	bctr
+
+.*\.plt_call\.f2>:
+.*:	(7d 88 02 a6|a6 02 88 7d) 	mflr    r12
+.*:	(42 9f 00 05|05 00 9f 42) 	bcl     .*
+.*:	(7d 68 02 a6|a6 02 68 7d) 	mflr    r11
+.*:	(7d 88 03 a6|a6 03 88 7d) 	mtlr    r12
+.*:	(3d 8b 00 01|01 00 8b 3d) 	addis   r12,r11,1
+.*:	(e9 8c .. ..|.. .. 8c e9) 	ld      r12,.*\(r12\)
+.*:	(7d 89 03 a6|a6 03 89 7d) 	mtctr   r12
+.*:	(4e 80 04 20|20 04 80 4e) 	bctr
+
+#...
+.*:	(4b ff ff 81|81 ff ff 4b) 	bl      .*\.plt_call\.f1>
+.*:	(e8 41 00 18|18 00 41 e8) 	ld      r2,24\(r1\)
+.*:	(4b ff ff 7d|7d ff ff 4b) 	bl      .*\.plt_call\.f1\+0x4>
+.*:	(4b ff ff 99|99 ff ff 4b) 	bl      .*\.plt_call\.f2>
+.*:	(04 10 00 01|01 00 10 04) 	pld     r3,.*
+.*:	(e4 60 .. ..|.. .. 60 e4) 
+#pass
diff --git a/ld/testsuite/ld-powerpc/powerpc.exp b/ld/testsuite/ld-powerpc/powerpc.exp
index de676b8..50553ba 100644
--- a/ld/testsuite/ld-powerpc/powerpc.exp
+++ b/ld/testsuite/ld-powerpc/powerpc.exp
@@ -402,6 +402,7 @@ if [ supports_ppc64 ] then {
     run_dump_test "pr23937"
     run_dump_test "callstub-1"
     run_dump_test "callstub-2"
+    run_dump_test "callstub-3"
     run_dump_test "tlsgd"
     run_dump_test "tlsld"
     run_dump_test "tlsie"
-- 
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