From 02f440c1ef5d5d79552a524065aa3e2fabe469b9 Mon Sep 17 00:00:00 2001 From: Wilco Dijkstra Date: Wed, 19 Dec 2018 18:28:24 +0000 Subject: [AArch64] Add ifunc support for Ares Add Ares to the midr_el0 list and support ifunc dispatch. Since Ares supports 2 128-bit loads/stores, use Neon registers for memcpy by selecting __memcpy_falkor by default (we should rename this to __memcpy_simd or similar). * manual/tunables.texi (glibc.cpu.name): Add ares tunable. * sysdeps/aarch64/multiarch/memcpy.c (__libc_memcpy): Use __memcpy_falkor for ares. * sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_ARES): Add new define. * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list): Add ares cpu. --- ChangeLog | 10 ++++++++++ manual/tunables.texi | 2 +- sysdeps/aarch64/multiarch/memcpy.c | 2 +- sysdeps/unix/sysv/linux/aarch64/cpu-features.c | 1 + sysdeps/unix/sysv/linux/aarch64/cpu-features.h | 2 ++ 5 files changed, 15 insertions(+), 2 deletions(-) diff --git a/ChangeLog b/ChangeLog index 909e56a49c..bf4dbc9f32 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2019-01-09 Wilco Dijkstra + + * manual/tunables.texi (glibc.cpu.name): Add ares tunable. + * sysdeps/aarch64/multiarch/memcpy.c (__libc_memcpy): Use + __memcpy_falkor for ares. + * sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_ARES): + Add new define. + * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list): + Add ares cpu. + 2019-01-07 H.J. Lu [BZ #24066] diff --git a/manual/tunables.texi b/manual/tunables.texi index 09a25655ae..af820820e0 100644 --- a/manual/tunables.texi +++ b/manual/tunables.texi @@ -360,7 +360,7 @@ This tunable is specific to powerpc, powerpc64 and powerpc64le. The @code{glibc.cpu.name=xxx} tunable allows the user to tell @theglibc{} to assume that the CPU is @code{xxx} where xxx may have one of these values: @code{generic}, @code{falkor}, @code{thunderxt88}, @code{thunderx2t99}, -@code{thunderx2t99p1}. +@code{thunderx2t99p1}, @code{ares}. This tunable is specific to aarch64. @end deftp diff --git a/sysdeps/aarch64/multiarch/memcpy.c b/sysdeps/aarch64/multiarch/memcpy.c index a27d571434..f79f84c638 100644 --- a/sysdeps/aarch64/multiarch/memcpy.c +++ b/sysdeps/aarch64/multiarch/memcpy.c @@ -36,7 +36,7 @@ extern __typeof (__redirect_memcpy) __memcpy_falkor attribute_hidden; libc_ifunc (__libc_memcpy, (IS_THUNDERX (midr) ? __memcpy_thunderx - : (IS_FALKOR (midr) || IS_PHECDA (midr) + : (IS_FALKOR (midr) || IS_PHECDA (midr) || IS_ARES (midr) ? __memcpy_falkor : (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr) ? __memcpy_thunderx2 diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c index ce5998ae73..4243ceda07 100644 --- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c +++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c @@ -36,6 +36,7 @@ static struct cpu_list cpu_list[] = { {"thunderx2t99", 0x431F0AF0}, {"thunderx2t99p1", 0x420F5160}, {"phecda", 0x680F0000}, + {"ares", 0x411FD0C0}, {"generic", 0x0} }; diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h index fa6d8dbd95..6f8b35ff09 100644 --- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h +++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h @@ -51,6 +51,8 @@ #define IS_PHECDA(midr) (MIDR_IMPLEMENTOR(midr) == 'h' \ && MIDR_PARTNUM(midr) == 0x000) +#define IS_ARES(midr) (MIDR_IMPLEMENTOR(midr) == 'A' \ + && MIDR_PARTNUM(midr) == 0xd0c) struct cpu_features { -- cgit v1.2.1