From: "H.J. Lu" <hjl.tools@gmail.com>
To: libc-stable@sourceware.org
Cc: fweimer@redhat.com, adhemerval.zanella@linaro.org
Subject: [Backport: 0/6] Update _dl_tlsdesc_dynamic to preserve caller-saved registers
Date: Mon, 1 Apr 2024 13:23:13 -0700 [thread overview]
Message-ID: <20240401202319.690253-1-hjl.tools@gmail.com> (raw)
GNU2 TLS descriptor instruction sequences have implicit _dl_tlsdesc_dynamic
call and compilers assume that caller-saved registers are unchanged after
call. Update _dl_tlsdesc_dynamic to preserve caller-saved registers.
Adhemerval Zanella (3):
Ignore undefined symbols for -mtls-dialect=gnu2
arm: Update _dl_tlsdesc_dynamic to preserve caller-saved registers (BZ
31372)
elf: Enable TLS descriptor tests on aarch64
H.J. Lu (3):
x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers
x86-64: Update _dl_tlsdesc_dynamic to preserve AMX registers
x86-64: Allocate state buffer space for RDI, RSI and RBX
config.h.in | 3 +
configure | 25 ++-
configure.ac | 17 +-
elf/Makefile | 34 +++-
elf/tst-gnu2-tls2.c | 122 +++++++++++
elf/tst-gnu2-tls2.h | 40 ++++
elf/tst-gnu2-tls2mod0.c | 32 +++
elf/tst-gnu2-tls2mod1.c | 32 +++
elf/tst-gnu2-tls2mod2.c | 32 +++
sysdeps/aarch64/preconfigure | 1 +
sysdeps/arm/Makefile | 8 +-
sysdeps/arm/configure | 32 +++
sysdeps/arm/configure.ac | 15 ++
sysdeps/arm/dl-tlsdesc.S | 70 ++++++-
sysdeps/arm/tst-gnu2-tls2.h | 128 ++++++++++++
sysdeps/i386/dl-machine.h | 2 +-
sysdeps/i386/dl-tlsdesc-dynamic.h | 190 ++++++++++++++++++
sysdeps/i386/dl-tlsdesc.S | 115 +++++------
sysdeps/unix/sysv/linux/x86_64/Makefile | 27 +++
.../sysv/linux/x86_64/include/asm/prctl.h | 5 +
.../linux/x86_64/tst-gnu2-tls2-amx-mod0.c | 2 +
.../linux/x86_64/tst-gnu2-tls2-amx-mod1.c | 2 +
.../linux/x86_64/tst-gnu2-tls2-amx-mod2.c | 2 +
.../sysv/linux/x86_64/tst-gnu2-tls2-amx.c | 83 ++++++++
.../sysv/linux/x86_64/tst-gnu2-tls2-amx.h | 63 ++++++
sysdeps/x86/Makefile | 7 +-
sysdeps/x86/cpu-features-offsets.sym | 1 +
sysdeps/x86/cpu-features.c | 118 ++++++++++-
sysdeps/x86/dl-procinfo.c | 16 ++
sysdeps/{x86_64 => x86}/features-offsets.sym | 2 +
sysdeps/x86/include/cpu-features.h | 2 +
sysdeps/x86/sysdep.h | 78 ++++++-
sysdeps/x86/tst-gnu2-tls2.c | 20 ++
sysdeps/x86_64/Makefile | 2 +-
sysdeps/x86_64/configure | 28 +++
sysdeps/x86_64/configure.ac | 15 ++
sysdeps/x86_64/dl-machine.h | 19 +-
sysdeps/x86_64/dl-procinfo.c | 16 ++
sysdeps/x86_64/dl-tlsdesc-dynamic.h | 166 +++++++++++++++
sysdeps/x86_64/dl-tlsdesc.S | 108 +++-------
sysdeps/x86_64/dl-trampoline-save.h | 34 ++++
sysdeps/x86_64/dl-trampoline-state.h | 51 +++++
sysdeps/x86_64/dl-trampoline.S | 20 +-
sysdeps/x86_64/dl-trampoline.h | 34 +---
sysdeps/x86_64/tst-gnu2-tls2mod1.S | 87 ++++++++
45 files changed, 1642 insertions(+), 264 deletions(-)
create mode 100644 elf/tst-gnu2-tls2.c
create mode 100644 elf/tst-gnu2-tls2.h
create mode 100644 elf/tst-gnu2-tls2mod0.c
create mode 100644 elf/tst-gnu2-tls2mod1.c
create mode 100644 elf/tst-gnu2-tls2mod2.c
create mode 100644 sysdeps/arm/tst-gnu2-tls2.h
create mode 100644 sysdeps/i386/dl-tlsdesc-dynamic.h
create mode 100644 sysdeps/unix/sysv/linux/x86_64/tst-gnu2-tls2-amx-mod0.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/tst-gnu2-tls2-amx-mod1.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/tst-gnu2-tls2-amx-mod2.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/tst-gnu2-tls2-amx.c
create mode 100644 sysdeps/unix/sysv/linux/x86_64/tst-gnu2-tls2-amx.h
rename sysdeps/{x86_64 => x86}/features-offsets.sym (89%)
create mode 100644 sysdeps/x86/tst-gnu2-tls2.c
create mode 100644 sysdeps/x86_64/dl-tlsdesc-dynamic.h
create mode 100644 sysdeps/x86_64/dl-trampoline-save.h
create mode 100644 sysdeps/x86_64/dl-trampoline-state.h
create mode 100644 sysdeps/x86_64/tst-gnu2-tls2mod1.S
--
2.44.0
next reply other threads:[~2024-04-01 20:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-01 20:23 H.J. Lu [this message]
2024-04-01 20:23 ` [Backport: 1/6] x86: " H.J. Lu
2024-04-01 20:23 ` [Backport: 2/6] x86-64: Update _dl_tlsdesc_dynamic to preserve AMX registers H.J. Lu
2024-04-01 20:23 ` [Backport: 3/6] x86-64: Allocate state buffer space for RDI, RSI and RBX H.J. Lu
2024-04-01 20:23 ` [Backport: 4/6] Ignore undefined symbols for -mtls-dialect=gnu2 H.J. Lu
2024-04-01 20:23 ` [Backport: 5/6] arm: Update _dl_tlsdesc_dynamic to preserve caller-saved registers (BZ 31372) H.J. Lu
2024-04-01 20:23 ` [Backport: 6/6] elf: Enable TLS descriptor tests on aarch64 H.J. Lu
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