From: Alan Modra <amodra@gmail.com>
To: Paul E Murphy <murphyp@linux.ibm.com>
Cc: libc-alpha@sourceware.org,
Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Subject: Re: [PowerPC64] Use medium model toc accesses throughout
Date: Sat, 29 Jan 2022 11:54:12 +1030 [thread overview]
Message-ID: <YfSXPPfPuHs1whxB@squeak.grove.modra.org> (raw)
In-Reply-To: <5a44c0d1-9cbd-aac8-e60a-3627e58b023b@linux.ibm.com>
On Fri, Jan 28, 2022 at 11:48:44AM -0600, Paul E Murphy wrote:
> > --- a/sysdeps/powerpc/powerpc64/dl-trampoline.S
> > +++ b/sysdeps/powerpc/powerpc64/dl-trampoline.S
> > @@ -32,6 +32,7 @@
> > because gcc as of 2010/05 doesn't allocate a proper stack frame for
> > a function that makes no calls except for __tls_get_addr and we
> > might be here resolving the __tls_get_addr call. */
> > + .hidden _dl_runtime_resolve
> > #define INT_PARMS FRAME_MIN_SIZE
> > ENTRY (_dl_runtime_resolve, 4)
> > stdu r1,-FRAME_SIZE(r1)
> > @@ -195,6 +196,7 @@ END(_dl_runtime_resolve)
> > parm1 (r3) and the index (r0) needs to be converted to an offset
> > (index * 24) in parm2 (r4). */
> > #ifndef PROF
> > + .hidden _dl_profile_resolve
> > ENTRY (_dl_profile_resolve, 4)
> > /* Spill r30, r31 to preserve the link_map* and reloc_addr, in case we
> > need to call _dl_audit_pltexit. */
>
> LGTM (this should wait until after the freeze), though these two changes
> seem orthogonal to the commit title.
True. It could have been a separate patch.
> For my education, why are are small model accesses used in these files?
dl-trampoline.S is an old file, from before the linker edited
toc-indirect code to toc-pointer relative. Without the link editing
small model is more efficient if the toc is small enough.
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2022-01-29 1:24 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-23 12:42 Alan Modra
2022-01-24 3:47 ` [PATCH 2/5] [PowerPC64] Set up thread register for _dl_relocate_static_pie Alan Modra
2022-02-16 23:02 ` Paul E Murphy
2022-02-19 0:49 ` Alan Modra
2022-01-24 3:50 ` [PATCH 3/5] [PowerPC] Relocate stinfo->main Alan Modra
2022-01-24 4:48 ` H.J. Lu
2022-01-24 6:51 ` Alan Modra
2022-01-24 3:52 ` [PATCH 4/5] Constify a variable in dl_vdso_vsym Alan Modra
2022-01-24 4:06 ` [PATCH 5/5] Enable static-pie on powerpc64 Alan Modra
2022-01-27 18:39 ` Florian Weimer
2022-01-28 8:45 ` Alan Modra
2022-01-28 17:48 ` [PowerPC64] Use medium model toc accesses throughout Paul E Murphy
2022-01-29 1:24 ` Alan Modra [this message]
2022-02-28 6:40 ` [PATCH v2 0/4] PowerPC64 static-pie Alan Modra
2022-02-28 6:40 ` [PATCH v2 1/4] powerpc64: Use medium model toc accesses throughout Alan Modra
2022-04-08 22:28 ` Tulio Magno Quites Machado Filho
2022-02-28 6:40 ` [PATCH v2 2/4] powerpc64: Set up thread register for _dl_relocate_static_pie Alan Modra
2022-04-08 22:28 ` Tulio Magno Quites Machado Filho
2022-02-28 6:40 ` [PATCH v2 3/4] powerpc: Relocate stinfo->main Alan Modra
2022-04-08 22:32 ` Tulio Magno Quites Machado Filho
2022-02-28 6:40 ` [PATCH v2 4/4] powerpc64: Enable static-pie Alan Modra
2022-04-08 22:49 ` Tulio Magno Quites Machado Filho
2022-04-14 1:16 ` Alan Modra
2022-04-14 3:42 ` Fangrui Song
2022-04-20 7:21 ` [PATCH v3] " Alan Modra
2022-03-04 12:48 ` [PATCH v2 0/4] PowerPC64 static-pie Alan Modra
2022-04-08 8:06 ` Alan Modra
2022-04-09 0:14 ` Fangrui Song
2022-04-14 0:33 ` Alan Modra
2022-04-14 1:54 ` DT_RELR without libc.so dependency H.J. Lu
2022-04-14 3:43 ` Fangrui Song
2022-04-14 5:18 ` Alan Modra
2022-04-14 17:55 ` H.J. Lu
2022-04-08 22:27 ` [PATCH v2 0/4] PowerPC64 static-pie Tulio Magno Quites Machado Filho
2022-04-11 1:38 ` Alan Modra
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