See https://bugzilla.opensuse.org/show_bug.cgi?id=1179751 where
Guillaume tracked this down to a change from GMP 6.2.0 to GMP 6.2.1.
The issue shows up as
Starting program: /home/abuild/rpmbuild/BUILD/gmp-6.2.1/tests/t-constants
Missing separate debuginfos, use: zypper install
glibc-debuginfo-2.32-3.3.aarch64
PP_INVERTED == 21cfe6cfc938b36b, but pp_inverted_calc == 20f8c8b59d4cb9bc
Reverting
diff --git a/mpn/arm64/invert_limb.asm b/mpn/arm64/invert_limb.asm
index a94b0e961..6a99bf002 100644
--- a/mpn/arm64/invert_limb.asm
+++ b/mpn/arm64/invert_limb.asm
@@ -41,9 +41,9 @@ C Compiler generated, mildly edited. Could surely be
further optimised.
ASM_START()
PROLOGUE(mpn_invert_limb)
lsr x2, x0, #54
- adrp x1, approx_tab
+ LEA_HI( x1, approx_tab)
and x2, x2, #0x1fe
- add x1, x1, :lo12:approx_tab
+ LEA_LO( x1, approx_tab)
ldrh w3, [x1,x2]
lsr x4, x0, #24
add x4, x4, #1
fixes the issue. Disassembly of the bogus libgmp routine is
(via objdump)
000000000005d188 <__gmpn_invert_limb>:
5d188: d376fc02 lsr x2, x0, #54
5d18c: d0000181 adrp x1, 8f000
<toom_eval_pm2exp.c.32b029f3+0x1d9>
5d190: 927f1c42 and x2, x2, #0x1fe
5d194: f9475c21 ldr x1, [x1, #3768]
5d198: 78626823 ldrh w3, [x1, x2]
5d19c: d358fc04 lsr x4, x0, #24
5d1a0: 91000484 add x4, x4, #0x1
relocations of the object are
Relocation section '.rela.text' at offset 0x558 contains 2 entries:
Offset Info Type Sym. Value Sym. Name +
Addend
000000000004 000100000137 R_AARCH64_ADR_GOT 0000000000000000 .text + 7c
00000000000c 000100000138 R_AARCH64_LD64_GO 0000000000000000 .text + 7c
not sure what goes wrong, but the approx_tab data ends up in the .text
section (so going via the GOT is even unnecessary - but I see the .asm
file uses .DATA which hints at that it should go to .data or .rodata).
Richard.
--
Richard Biener <rguent...@suse.de>
SUSE Software Solutions Germany GmbH, Maxfeldstrasse 5, 90409 Nuernberg,
Germany; GF: Felix Imendörffer; HRB 36809 (AG Nuernberg)
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