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* [Bug libc/26173] New: powerpc64*: Add @notoc to calls to functions that do not preserve r2
@ 2020-06-25 19:55 tuliom at ascii dot art.br
2020-06-25 19:56 ` [Bug libc/26173] " tuliom at ascii dot art.br
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: tuliom at ascii dot art.br @ 2020-06-25 19:55 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=26173
Bug ID: 26173
Summary: powerpc64*: Add @notoc to calls to functions that do
not preserve r2
Product: glibc
Version: 2.32
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: tuliom at ascii dot art.br
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The latest linker version started to report calls from functions that are
expected to preserve r2 to functions that do not preserve r2, causing build
failures in glibc, e.g.:
sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S:163:(.text+0xfc): call
to `__GI_exit' lacks nop, can't restore toc; (toc save/adjust stub)
More details are available in Binutils bug #26164.
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^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug libc/26173] powerpc64*: Add @notoc to calls to functions that do not preserve r2 2020-06-25 19:55 [Bug libc/26173] New: powerpc64*: Add @notoc to calls to functions that do not preserve r2 tuliom at ascii dot art.br @ 2020-06-25 19:56 ` tuliom at ascii dot art.br 2020-06-26 15:17 ` tuliom at ascii dot art.br 2020-07-10 23:11 ` tuliom at ascii dot art.br 2 siblings, 0 replies; 4+ messages in thread From: tuliom at ascii dot art.br @ 2020-06-25 19:56 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=26173 Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> changed: What |Removed |Added ---------------------------------------------------------------------------- Host| |powerpc64* Status|NEW |ASSIGNED Assignee|unassigned at sourceware dot org |tuliom at ascii dot art.br -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libc/26173] powerpc64*: Add @notoc to calls to functions that do not preserve r2 2020-06-25 19:55 [Bug libc/26173] New: powerpc64*: Add @notoc to calls to functions that do not preserve r2 tuliom at ascii dot art.br 2020-06-25 19:56 ` [Bug libc/26173] " tuliom at ascii dot art.br @ 2020-06-26 15:17 ` tuliom at ascii dot art.br 2020-07-10 23:11 ` tuliom at ascii dot art.br 2 siblings, 0 replies; 4+ messages in thread From: tuliom at ascii dot art.br @ 2020-06-26 15:17 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=26173 --- Comment #1 from Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> --- A patch to fix this has been proposed at: https://patchwork.sourceware.org/project/glibc/patch/20200625230224.301671-1-tuliom@linux.ibm.com/ -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug libc/26173] powerpc64*: Add @notoc to calls to functions that do not preserve r2 2020-06-25 19:55 [Bug libc/26173] New: powerpc64*: Add @notoc to calls to functions that do not preserve r2 tuliom at ascii dot art.br 2020-06-25 19:56 ` [Bug libc/26173] " tuliom at ascii dot art.br 2020-06-26 15:17 ` tuliom at ascii dot art.br @ 2020-07-10 23:11 ` tuliom at ascii dot art.br 2 siblings, 0 replies; 4+ messages in thread From: tuliom at ascii dot art.br @ 2020-07-10 23:11 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=26173 Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED Target Milestone|--- |2.32 --- Comment #2 from Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> --- Fixed in 2.32 with: commit 7c7bcf3634e44cf7e001aaa302138c1ee0e58f8c Author: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> Date: Fri Jul 10 19:41:06 2020 -0300 powerpc64: Fix calls when r2 is not used [BZ #26173] Teach the linker that __mcount_internal, __sigjmp_save_symbol, __syscall_error and __GI_exit do not use r2, so that it does not need to recover r2 after the call. Test at configure time if the assembler supports @notoc and define USE_PPC64_NOTOC. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-07-10 23:11 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-06-25 19:55 [Bug libc/26173] New: powerpc64*: Add @notoc to calls to functions that do not preserve r2 tuliom at ascii dot art.br 2020-06-25 19:56 ` [Bug libc/26173] " tuliom at ascii dot art.br 2020-06-26 15:17 ` tuliom at ascii dot art.br 2020-07-10 23:11 ` tuliom at ascii dot art.br
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