date:20200312

Re: [RESEND PATCH v2 8/9] media: fsl-viu: Constify ioreadX() iomem argument (as in generic implementation)

2020-03-12 Thread Hans Verkuil

On 2/19/20 6:50 PM, Krzysztof Kozlowski wrote:
> The ioreadX() helpers have inconsistent interface.  On some architectures
> void *__iomem address argument is a pointer to const, on some not.
> 
> Implementations of ioreadX() do not modify the memory under the address
> so they can be converted to a "const" version for const-safety and
> consistency among architectures.
> 
> Signed-off-by: Krzysztof Kozlowski 

Acked-by: Hans Verkuil 

Regards,

Hans

> ---
>  drivers/media/platform/fsl-viu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/fsl-viu.c 
> b/drivers/media/platform/fsl-viu.c
> index 81a8faedbba6..991d9dc82749 100644
> --- a/drivers/media/platform/fsl-viu.c
> +++ b/drivers/media/platform/fsl-viu.c
> @@ -34,7 +34,7 @@
>  /* Allow building this driver with COMPILE_TEST */
>  #if !defined(CONFIG_PPC) && !defined(CONFIG_MICROBLAZE)
>  #define out_be32(v, a)   iowrite32be(a, (void __iomem *)v)
> -#define in_be32(a)   ioread32be((void __iomem *)a)
> +#define in_be32(a)   ioread32be((const void __iomem *)a)
>  #endif
>  
>  #define BUFFER_TIMEOUT   msecs_to_jiffies(500)  /* 0.5 seconds */
> 


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Re: [RESEND PATCH v2 6/9] drm/mgag200: Constify ioreadX() iomem argument (as in generic implementation)

2020-03-12 Thread Thomas Zimmermann

Hi Krzysztof,

I just received a resend email from 3 weeks ago :/

Do you want me to merge the mgag200 patch into drm-misc-next?

Best regards
Thomas

Am 19.02.20 um 18:50 schrieb Krzysztof Kozlowski:
> The ioreadX() helpers have inconsistent interface.  On some architectures
> void *__iomem address argument is a pointer to const, on some not.
> 
> Implementations of ioreadX() do not modify the memory under the address
> so they can be converted to a "const" version for const-safety and
> consistency among architectures.
> 
> Signed-off-by: Krzysztof Kozlowski 
> Reviewed-by: Thomas Zimmermann 
> 
> ---
> 
> Changes since v1:
> 1. Add Thomas' review.
> ---
>  drivers/gpu/drm/mgag200/mgag200_drv.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h 
> b/drivers/gpu/drm/mgag200/mgag200_drv.h
> index aa32aad222c2..6512b3af4fb7 100644
> --- a/drivers/gpu/drm/mgag200/mgag200_drv.h
> +++ b/drivers/gpu/drm/mgag200/mgag200_drv.h
> @@ -34,9 +34,9 @@
>  
>  #define MGAG200FB_CONN_LIMIT 1
>  
> -#define RREG8(reg) ioread8(((void __iomem *)mdev->rmmio) + (reg))
> +#define RREG8(reg) ioread8(((const void __iomem *)mdev->rmmio) + (reg))
>  #define WREG8(reg, v) iowrite8(v, ((void __iomem *)mdev->rmmio) + (reg))
> -#define RREG32(reg) ioread32(((void __iomem *)mdev->rmmio) + (reg))
> +#define RREG32(reg) ioread32(((const void __iomem *)mdev->rmmio) + (reg))
>  #define WREG32(reg, v) iowrite32(v, ((void __iomem *)mdev->rmmio) + (reg))
>  
>  #define ATTR_INDEX 0x1fc0
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer



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Re: [RESEND PATCH v2 1/9] iomap: Constify ioreadX() iomem argument (as in generic implementation)

2020-03-12 Thread Michael Ellerman

Krzysztof Kozlowski  writes:
> diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
> index 5ac84efc6ede..9fe4fb3b08aa 100644
> --- a/arch/powerpc/kernel/iomap.c
> +++ b/arch/powerpc/kernel/iomap.c
> @@ -15,23 +15,23 @@
>   * Here comes the ppc64 implementation of the IOMAP 
>   * interfaces.
>   */
> -unsigned int ioread8(void __iomem *addr)
> +unsigned int ioread8(const void __iomem *addr)
>  {
>   return readb(addr);
>  }
> -unsigned int ioread16(void __iomem *addr)
> +unsigned int ioread16(const void __iomem *addr)
>  {
>   return readw(addr);
>  }
> -unsigned int ioread16be(void __iomem *addr)
> +unsigned int ioread16be(const void __iomem *addr)
>  {
>   return readw_be(addr);
>  }
> -unsigned int ioread32(void __iomem *addr)
> +unsigned int ioread32(const void __iomem *addr)
>  {
>   return readl(addr);
>  }
> -unsigned int ioread32be(void __iomem *addr)
> +unsigned int ioread32be(const void __iomem *addr)
>  {
>   return readl_be(addr);
>  }
> @@ -41,27 +41,27 @@ EXPORT_SYMBOL(ioread16be);
>  EXPORT_SYMBOL(ioread32);
>  EXPORT_SYMBOL(ioread32be);
>  #ifdef __powerpc64__
> -u64 ioread64(void __iomem *addr)
> +u64 ioread64(const void __iomem *addr)
>  {
>   return readq(addr);
>  }
> -u64 ioread64_lo_hi(void __iomem *addr)
> +u64 ioread64_lo_hi(const void __iomem *addr)
>  {
>   return readq(addr);
>  }
> -u64 ioread64_hi_lo(void __iomem *addr)
> +u64 ioread64_hi_lo(const void __iomem *addr)
>  {
>   return readq(addr);
>  }
> -u64 ioread64be(void __iomem *addr)
> +u64 ioread64be(const void __iomem *addr)
>  {
>   return readq_be(addr);
>  }
> -u64 ioread64be_lo_hi(void __iomem *addr)
> +u64 ioread64be_lo_hi(const void __iomem *addr)
>  {
>   return readq_be(addr);
>  }
> -u64 ioread64be_hi_lo(void __iomem *addr)
> +u64 ioread64be_hi_lo(const void __iomem *addr)
>  {
>   return readq_be(addr);
>  }
> @@ -139,15 +139,15 @@ EXPORT_SYMBOL(iowrite64be_hi_lo);
>   * FIXME! We could make these do EEH handling if we really
>   * wanted. Not clear if we do.
>   */
> -void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
> +void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count)
>  {
>   readsb(addr, dst, count);
>  }
> -void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
> +void ioread16_rep(const void __iomem *addr, void *dst, unsigned long count)
>  {
>   readsw(addr, dst, count);
>  }
> -void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
> +void ioread32_rep(const void __iomem *addr, void *dst, unsigned long count)
>  {
>   readsl(addr, dst, count);
>  }

This looks OK to me.

Acked-by: Michael Ellerman  (powerpc)

cheers

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Re: [PATCH] Linux: Remove and the sysctl function

2020-03-12 Thread Vineet Gupta

On 3/12/20 1:15 AM, Florian Weimer wrote:
> * Vineet Gupta via Libc-alpha:
> 
>> On 3/11/20 1:19 PM, Zack Weinberg wrote:
>>> So I withdraw my objections to your original patch.  We can always put
>>> sys/sysctl.h back in the future if someone does the work to write the
>>> emulation.
>>
>> My 2 cents. Can we _not_ remove the header per-se. This can certainly cause
>> arbitrary packages to build time fail (vs. runtime failure from sysctl 
>> returning
>> -1 or some such). Propagation of such fixes in build systems it may take a 
>> while.
>> Consider my personal woe with stime removal in context of Buildroot/busybox.
>> Despite them fixed in busybox not all moving parts are aligned still and we 
>> have
>> to carry such patches locally to be able to even build glibc 2.31+ there.
> 
> Why aren't those patches upstream yet?  (I'm not blaming you, I'm just
> trying to understand what is going on.)

Its mostly logistics. The fixes in busybox was done early but there was no 
release
(atleast not until I last checked) so buildroot couldn't just bump the package
version. One of my colleagues did send the "patches" to fixup buildroot instead
(essentially backport busybox patches in BR itself) and that got stuck in the
machinery due to some other things.

> Are you in a special position becaue you have to use a newer glibc for
> your port, and everybody else using this distribution is sticking with
> an older glibc?

Thats exactly the case here so I'm in a special situation indeed. Upstream BR is
still with 2.30.x and I needed to test glibc 2.31+ for ARC upstreaming.

> glibc's approach to removals is inconsistent at best.  stime was never
> deprecated and removed directly, for example.  There is also the issue
> that configure scripts ignore deprecation warnings, which then can
> lead to build issues later one, something that does not happen with
> removed interfaces (which are obviously not detected by configure
> scripts).
> 
> And specific to sysctl, the removal of the header and function
> actually fixes bugs in a few packages.
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[PATCH v2] Force 64-bit time based syscalls for TIMESIZE==64

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
Changes since v1
  - don't redirect these to 64-bit variants
---
 sysdeps/unix/sysv/linux/generic/sysdep.h | 23 +++
 1 file changed, 23 insertions(+)

diff --git a/sysdeps/unix/sysv/linux/generic/sysdep.h 
b/sysdeps/unix/sysv/linux/generic/sysdep.h
index 40b4b955ca1b..21facbad818a 100644
--- a/sysdeps/unix/sysv/linux/generic/sysdep.h
+++ b/sysdeps/unix/sysv/linux/generic/sysdep.h
@@ -17,6 +17,7 @@
.  */
 
 #include 
+#include 
 #include 
 #include 
 #include 
@@ -25,3 +26,25 @@
 #ifdef __NR_llseek
 # define __NR__llseek __NR_llseek
 #endif
+
+#if __WORDSIZE == 32 && __TIMESIZE == 64
+
+/* Don't provide 32-bit time syscalls.
+   Older variants of asm-generic ABIs can provide those (e.g. ARC).  */
+
+# undef __NR_futex
+# undef __NR_rt_sigtimedwait
+# undef __NR_ppoll
+# undef __NR_utimensat
+# undef __NR_pselect6
+# undef __NR_recvmmsg
+# undef __NR_semtimedop
+# undef __NR_mq_timedreceive
+# undef __NR_mq_timedsend
+# undef __NR_clock_getres
+# undef __NR_timerfd_settime
+# undef __NR_timerfd_gettime
+# undef __NR_sched_rr_get_interval
+# undef __NR_clock_adjtime
+
+#endif
-- 
2.20.1


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Re: [PATCH v3 00/17] glibc port to ARC processors

2020-03-12 Thread Vineet Gupta

Hi Joseph,

On 3/6/20 5:10 PM, Joseph Myers wrote:
> On Sat, 7 Mar 2020, Vineet Gupta wrote:
> 
>> On 3/6/20 4:21 PM, Joseph Myers wrote:
>>> Please give details of what the entries would be for 
>>>  and 
>> ARC
>>* 32-bit, hard-float, LE: /lib/ld-linux-arc.so.2
>>* 32-bit, soft-float, LE: /lib/ld-linux-arc.so.2
>>
>> (soft-float ABI is compatible with hardware-float builds in terms of calling
>> convention, register-file etc)
> So that should actually be one bullet-point entry for soft-float ABI, 
> rather than two entries, because it's a single ABI, with a clarifying note 
> following like those for some other architectures.

Are you waiting for me to fold the 64-bit time stuff and a respin for a more in
depth review of the patchset. I appreciate you have a zillion other things 
backed
up on your todo list :-)

Let me know how to proceed.

Thx,
-Vineet
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Re: [PATCH v3 00/17] glibc port to ARC processors

2020-03-12 Thread Joseph Myers

On Thu, 12 Mar 2020, Vineet Gupta wrote:

> Hi Joseph,
> 
> On 3/6/20 5:10 PM, Joseph Myers wrote:
> > On Sat, 7 Mar 2020, Vineet Gupta wrote:
> > 
> >> On 3/6/20 4:21 PM, Joseph Myers wrote:
> >>> Please give details of what the entries would be for 
> >>>  and 
> >> ARC
> >>* 32-bit, hard-float, LE: /lib/ld-linux-arc.so.2
> >>* 32-bit, soft-float, LE: /lib/ld-linux-arc.so.2
> >>
> >> (soft-float ABI is compatible with hardware-float builds in terms of 
> >> calling
> >> convention, register-file etc)
> > So that should actually be one bullet-point entry for soft-float ABI, 
> > rather than two entries, because it's a single ABI, with a clarifying note 
> > following like those for some other architectures.
> 
> Are you waiting for me to fold the 64-bit time stuff and a respin for a 
> more in depth review of the patchset. I appreciate you have a zillion 
> other things backed up on your todo list :-)

The patch series definitely needs revision for the issues I mentioned, 
yes.

-- 
Joseph S. Myers
jos...@codesourcery.com

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[PATCH v4 08/15] ARC: Linux Syscall Interface

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/unix/sysv/linux/arc/arch-syscall.h| 317 ++
 .../sysv/linux/arc/bits/socket-constants.h|  38 +++
 sysdeps/unix/sysv/linux/arc/bits/timesize.h   |  21 ++
 sysdeps/unix/sysv/linux/arc/clone.S   |  98 ++
 sysdeps/unix/sysv/linux/arc/jmp_buf-macros.h  |   6 +
 sysdeps/unix/sysv/linux/arc/kernel-features.h |  28 ++
 sysdeps/unix/sysv/linux/arc/kernel_stat.h |  26 ++
 sysdeps/unix/sysv/linux/arc/mmap_internal.h   |  27 ++
 sysdeps/unix/sysv/linux/arc/pt-vfork.S|   1 +
 sysdeps/unix/sysv/linux/arc/sigaction.c   |  31 ++
 sysdeps/unix/sysv/linux/arc/sigrestorer.S |  29 ++
 sysdeps/unix/sysv/linux/arc/syscall.S |  38 +++
 sysdeps/unix/sysv/linux/arc/syscalls.list |   3 +
 sysdeps/unix/sysv/linux/arc/sysctl.mk |   1 +
 sysdeps/unix/sysv/linux/arc/sysdep.c  |  33 ++
 sysdeps/unix/sysv/linux/arc/sysdep.h  | 219 
 sysdeps/unix/sysv/linux/arc/vfork.S   |  42 +++
 17 files changed, 958 insertions(+)
 create mode 100644 sysdeps/unix/sysv/linux/arc/arch-syscall.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/bits/socket-constants.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/bits/timesize.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/clone.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/jmp_buf-macros.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/kernel-features.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/kernel_stat.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/mmap_internal.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/pt-vfork.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/sigaction.c
 create mode 100644 sysdeps/unix/sysv/linux/arc/sigrestorer.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/syscall.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/syscalls.list
 create mode 100644 sysdeps/unix/sysv/linux/arc/sysctl.mk
 create mode 100644 sysdeps/unix/sysv/linux/arc/sysdep.c
 create mode 100644 sysdeps/unix/sysv/linux/arc/sysdep.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/vfork.S

diff --git a/sysdeps/unix/sysv/linux/arc/arch-syscall.h 
b/sysdeps/unix/sysv/linux/arc/arch-syscall.h
new file mode 100644
index ..db25a17ad077
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/arch-syscall.h
@@ -0,0 +1,317 @@
+/* AUTOGENERATED by update-syscall-lists.py.  */
+#define __NR_accept 202
+#define __NR_accept4 242
+#define __NR_acct 89
+#define __NR_add_key 217
+#define __NR_adjtimex 171
+#define __NR_arc_gettls 246
+#define __NR_arc_settls 245
+#define __NR_arc_usr_cmpxchg 248
+#define __NR_bind 200
+#define __NR_bpf 280
+#define __NR_brk 214
+#define __NR_cacheflush 244
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_chdir 49
+#define __NR_chroot 51
+#define __NR_clock_adjtime 266
+#define __NR_clock_adjtime64 405
+#define __NR_clock_getres 114
+#define __NR_clock_getres_time64 406
+#define __NR_clock_gettime 113
+#define __NR_clock_gettime64 403
+#define __NR_clock_nanosleep 115
+#define __NR_clock_nanosleep_time64 407
+#define __NR_clock_settime 112
+#define __NR_clock_settime64 404
+#define __NR_clone 220
+#define __NR_clone3 435
+#define __NR_close 57
+#define __NR_connect 203
+#define __NR_copy_file_range 285
+#define __NR_delete_module 106
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_eventfd2 19
+#define __NR_execve 221
+#define __NR_execveat 281
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_faccessat 48
+#define __NR_fadvise64_64 223
+#define __NR_fallocate 47
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_fchdir 50
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchown 55
+#define __NR_fchownat 54
+#define __NR_fcntl64 25
+#define __NR_fdatasync 83
+#define __NR_fgetxattr 10
+#define __NR_finit_module 273
+#define __NR_flistxattr 13
+#define __NR_flock 32
+#define __NR_fremovexattr 16
+#define __NR_fsconfig 431
+#define __NR_fsetxattr 7
+#define __NR_fsmount 432
+#define __NR_fsopen 430
+#define __NR_fspick 433
+#define __NR_fstat64 80
+#define __NR_fstatat64 79
+#define __NR_fstatfs64 44
+#define __NR_fsync 82
+#define __NR_ftruncate64 46
+#define __NR_futex 98
+#define __NR_futex_time64 422
+#define __NR_get_mempolicy 236
+#define __NR_get_robust_list 100
+#define __NR_getcpu 168
+#define __NR_getcwd 17
+#define __NR_getdents64 61
+#define __NR_getegid 177
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getgroups 158
+#define __NR_getitimer 102
+#define __NR_getpeername 205
+#define __NR_getpgid 155
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getpriority 141
+#define __NR_getrandom 278
+#define __NR_getresgid 150
+#define __NR_getresuid 148
+#define __NR_getrlimit 163
+#define __NR_getrusage 165
+#define __NR_getsid 156
+#define __NR_getsockname 204
+#define __NR_getsockopt 209
+#define __NR_gettid 178
+#defi

[PATCH v4 13/15] ARC: Build Infrastructure

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/Implies|  3 +++
 sysdeps/arc/Makefile   | 25 ++
 sysdeps/arc/Versions   |  6 ++
 sysdeps/arc/configure  | 14 
 sysdeps/arc/configure.ac   | 11 ++
 sysdeps/arc/nptl/Makefile  | 22 +++
 sysdeps/arc/preconfigure   | 15 +
 sysdeps/unix/sysv/linux/arc/Implies|  3 +++
 sysdeps/unix/sysv/linux/arc/Makefile   | 20 +
 sysdeps/unix/sysv/linux/arc/Versions   | 16 ++
 sysdeps/unix/sysv/linux/arc/configure  |  4 
 sysdeps/unix/sysv/linux/arc/configure.ac   |  4 
 sysdeps/unix/sysv/linux/arc/shlib-versions |  2 ++
 13 files changed, 145 insertions(+)
 create mode 100644 sysdeps/arc/Implies
 create mode 100644 sysdeps/arc/Makefile
 create mode 100644 sysdeps/arc/Versions
 create mode 100644 sysdeps/arc/configure
 create mode 100644 sysdeps/arc/configure.ac
 create mode 100644 sysdeps/arc/nptl/Makefile
 create mode 100644 sysdeps/arc/preconfigure
 create mode 100644 sysdeps/unix/sysv/linux/arc/Implies
 create mode 100644 sysdeps/unix/sysv/linux/arc/Makefile
 create mode 100644 sysdeps/unix/sysv/linux/arc/Versions
 create mode 100644 sysdeps/unix/sysv/linux/arc/configure
 create mode 100644 sysdeps/unix/sysv/linux/arc/configure.ac
 create mode 100644 sysdeps/unix/sysv/linux/arc/shlib-versions

diff --git a/sysdeps/arc/Implies b/sysdeps/arc/Implies
new file mode 100644
index ..780c4e246769
--- /dev/null
+++ b/sysdeps/arc/Implies
@@ -0,0 +1,3 @@
+wordsize-32
+ieee754/flt-32
+ieee754/dbl-64
diff --git a/sysdeps/arc/Makefile b/sysdeps/arc/Makefile
new file mode 100644
index ..92f90798355b
--- /dev/null
+++ b/sysdeps/arc/Makefile
@@ -0,0 +1,25 @@
+# ARC Makefile
+# Copyright (C) 1993-2020 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library.  If not, see
+# .
+
+# We don't support long doubles as a distinct type.  We don't need to set
+# this variable; it's here mostly for documentational purposes.
+long-double-fcts = no
+
+ifeq ($(subdir),debug)
+CFLAGS-backtrace.c += -funwind-tables
+endif
diff --git a/sysdeps/arc/Versions b/sysdeps/arc/Versions
new file mode 100644
index ..2d0f534b2aba
--- /dev/null
+++ b/sysdeps/arc/Versions
@@ -0,0 +1,6 @@
+libc {
+  GLIBC_2.32 {
+__syscall_error;
+__mcount;
+  }
+}
diff --git a/sysdeps/arc/configure b/sysdeps/arc/configure
new file mode 100644
index ..52e286da2ebb
--- /dev/null
+++ b/sysdeps/arc/configure
@@ -0,0 +1,14 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/arc.
+
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+
+libc_cv_have_sdata_section=no
+
+# For ARC, historically ; was used for comments and not newline
+# Later # also got added to comment list, but ; couldn't be switched to
+# canonical newline as there's lots of code out there which will break
+libc_cv_asm_line_sep='`'
+cat >>confdefs.h <<_ACEOF
+#define ASM_LINE_SEP $libc_cv_asm_line_sep
+_ACEOF
diff --git a/sysdeps/arc/configure.ac b/sysdeps/arc/configure.ac
new file mode 100644
index ..1074d312f033
--- /dev/null
+++ b/sysdeps/arc/configure.ac
@@ -0,0 +1,11 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/arc.
+
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
+libc_cv_have_sdata_section=no
+
+# For ARC, historically ; was used for comments and not newline
+# Later # also got added to comment list, but ; couldn't be switched to
+# canonical newline as there's lots of code out there which will break
+libc_cv_asm_line_sep='`'
+AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
diff --git a/sysdeps/arc/nptl/Makefile b/sysdeps/arc/nptl/Makefile
new file mode 100644
index ..6f387c53905d
--- /dev/null
+++ b/sysdeps/arc/nptl/Makefile
@@ -0,0 +1,22 @@
+# NPTL makefile fragment for ARC.
+# Copyright (C) 2005-2020 Free Software Foundation, Inc.
+#
+# This file is part of the GNU C Library.
+#
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by

[PATCH v4 07/15] ARC: hardware floating point support

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/bits/fenv.h |9 +-
 sysdeps/arc/fpu/e_sqrt.c|   27 +
 sysdeps/arc/fpu/e_sqrtf.c   |   27 +
 sysdeps/arc/fpu/fclrexcpt.c |   36 +
 sysdeps/arc/fpu/fegetenv.c  |   37 +
 sysdeps/arc/fpu/fegetmode.c |   31 +
 sysdeps/arc/fpu/fegetround.c|   32 +
 sysdeps/arc/fpu/feholdexcpt.c   |   43 +
 sysdeps/arc/fpu/fesetenv.c  |   48 +
 sysdeps/arc/fpu/fesetexcept.c   |   32 +
 sysdeps/arc/fpu/fesetmode.c |   41 +
 sysdeps/arc/fpu/fesetround.c|   39 +
 sysdeps/arc/fpu/feupdateenv.c   |   46 +
 sysdeps/arc/fpu/fgetexcptflg.c  |   31 +
 sysdeps/arc/fpu/fraiseexcpt.c   |   39 +
 sysdeps/arc/fpu/fsetexcptflg.c  |   38 +
 sysdeps/arc/fpu/ftestexcept.c   |   33 +
 sysdeps/arc/fpu/libm-test-ulps  | 1703 +++
 sysdeps/arc/fpu/libm-test-ulps-name |1 +
 sysdeps/arc/fpu/s_fma.c |   28 +
 sysdeps/arc/fpu/s_fmaf.c|   28 +
 sysdeps/arc/fpu_control.h   |  101 ++
 sysdeps/arc/get-rounding-mode.h |   38 +
 sysdeps/arc/math-tests-trap.h   |   27 +
 sysdeps/arc/tininess.h  |1 +
 25 files changed, 2514 insertions(+), 2 deletions(-)
 create mode 100644 sysdeps/arc/fpu/e_sqrt.c
 create mode 100644 sysdeps/arc/fpu/e_sqrtf.c
 create mode 100644 sysdeps/arc/fpu/fclrexcpt.c
 create mode 100644 sysdeps/arc/fpu/fegetenv.c
 create mode 100644 sysdeps/arc/fpu/fegetmode.c
 create mode 100644 sysdeps/arc/fpu/fegetround.c
 create mode 100644 sysdeps/arc/fpu/feholdexcpt.c
 create mode 100644 sysdeps/arc/fpu/fesetenv.c
 create mode 100644 sysdeps/arc/fpu/fesetexcept.c
 create mode 100644 sysdeps/arc/fpu/fesetmode.c
 create mode 100644 sysdeps/arc/fpu/fesetround.c
 create mode 100644 sysdeps/arc/fpu/feupdateenv.c
 create mode 100644 sysdeps/arc/fpu/fgetexcptflg.c
 create mode 100644 sysdeps/arc/fpu/fraiseexcpt.c
 create mode 100644 sysdeps/arc/fpu/fsetexcptflg.c
 create mode 100644 sysdeps/arc/fpu/ftestexcept.c
 create mode 100644 sysdeps/arc/fpu/libm-test-ulps
 create mode 100644 sysdeps/arc/fpu/libm-test-ulps-name
 create mode 100644 sysdeps/arc/fpu/s_fma.c
 create mode 100644 sysdeps/arc/fpu/s_fmaf.c
 create mode 100644 sysdeps/arc/fpu_control.h
 create mode 100644 sysdeps/arc/get-rounding-mode.h
 create mode 100644 sysdeps/arc/math-tests-trap.h
 create mode 100644 sysdeps/arc/tininess.h

diff --git a/sysdeps/arc/bits/fenv.h b/sysdeps/arc/bits/fenv.h
index 547f0103a53d..80afa50db9c6 100644
--- a/sysdeps/arc/bits/fenv.h
+++ b/sysdeps/arc/bits/fenv.h
@@ -47,7 +47,7 @@ enum
 # define FE_TOWARDZERO (0x0)
   FE_TOWARDZERO,
 FE_TONEAREST  =
-# define FE_TONEAREST  (0x1)
+# define FE_TONEAREST  (0x1)   /* default */
   FE_TONEAREST,
 FE_UPWARD =
 # define FE_UPWARD (0x2)
@@ -58,7 +58,12 @@ enum
   };
 
 typedef unsigned int fexcept_t;
-typedef unsigned int fenv_t;
+
+typedef struct
+{
+  unsigned int __fpcr;
+  unsigned int __fpsr;
+} fenv_t;
 
 /* If the default argument is used we use this value.  */
 #define FE_DFL_ENV ((const fenv_t *) -1)
diff --git a/sysdeps/arc/fpu/e_sqrt.c b/sysdeps/arc/fpu/e_sqrt.c
new file mode 100644
index ..abb67ef7b061
--- /dev/null
+++ b/sysdeps/arc/fpu/e_sqrt.c
@@ -0,0 +1,27 @@
+/* Square root of floating point number.
+   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   .  */
+
+#include 
+#include 
+
+double
+__ieee754_sqrt (double d)
+{
+  return __builtin_sqrt (d);
+}
+libm_alias_finite (__ieee754_sqrt, __sqrt)
diff --git a/sysdeps/arc/fpu/e_sqrtf.c b/sysdeps/arc/fpu/e_sqrtf.c
new file mode 100644
index ..13008a4f45d6
--- /dev/null
+++ b/sysdeps/arc/fpu/e_sqrtf.c
@@ -0,0 +1,27 @@
+/* Single-precision floating point square root.
+   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRAN

[PATCH v4 12/15] ARC: Update syscall-names.list for ARC specific syscalls

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/unix/sysv/linux/syscall-names.list | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sysdeps/unix/sysv/linux/syscall-names.list 
b/sysdeps/unix/sysv/linux/syscall-names.list
index 3d89814003a2..758b50164103 100644
--- a/sysdeps/unix/sysv/linux/syscall-names.list
+++ b/sysdeps/unix/sysv/linux/syscall-names.list
@@ -41,6 +41,9 @@ adjtimex
 afs_syscall
 alarm
 alloc_hugepages
+arc_gettls
+arc_settls
+arc_usr_cmpxchg
 arch_prctl
 arm_fadvise64_64
 arm_sync_file_range
-- 
2.20.1


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[PATCH v4 00/15] glibc port to ARC processors

2020-03-12 Thread Vineet Gupta

Hi,

This patchset implements glibc port to ARC HS48x processor from Synopsys.

It is based on 64-time time and offset work by Alistair and others.
Thank you guys for all the hard-work.

Code
-

g...@github.com:foss-for-synopsys-dwc-arc-processors/glibc.git  
#arc-glibc-upstream

v4:
   * Dropped 1/17: Merged upstream
   * Dropped 17/17:
   - 64-bit time/offset code chunked up into respective patches
   * sysctl removed
   * Updated README for arc gnu triplet
   * Updated install files for ARC gcc/binutils requirements
   * Updated NEWS with brief ISA/ABI info

v3:
   * Support for Hardware Floating Point
   * 64-bit time and offsets ABI (although all such changes are confined
 to a single patch)

v3: https://sourceware.org/legacy-ml/libc-alpha/2020-03/msg00167.html
v2: https://sourceware.org/legacy-ml/libc-alpha/2019-01/msg00681.html
v1: https://sourceware.org/legacy-ml/libc-alpha/2018-12/msg00678.html

Documentation:
--

(a) ABI doc:
https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/wiki/files/ARCv2_ABI.pdf

(b) Programmer's Reference Manual (PRM) : needs a download request to be filled
https://www.synopsys.com/dw/ipdir.php?ds=arc-hs44-hs46-hs48
https://www.synopsys.com/dw/doc.php/ds/cc/programmers-reference-manual-ARC-HS.pdf

Test Results:
--
(a) build-many-glibcs.py

| Summary of test results:
|   1251 PASS
| 15 XFAIL

(b) Full testsuite ran in a cross compile setup using buildroot on HSDK 
development
platform. Bulk of failures come from cross testing setup and I
intend to improve things with native testing going forward.

We have 4 old container tests passing, thx to DJ Delorie's insights.
But the 3 sysv ipc tests are failing likely from generic 64-bit changes in 
flight
which will come to resolution as things settle down.

| Summary of test results:
| 29 FAIL# compared to prev run: +4 pass, -3 fail
|
| PASS: elf/tst-dlopen-self-container
| PASS: elf/tst-dlopen-tlsmodid-container
| PASS: elf/tst-ldconfig-bad-aux-cache
| PASS: elf/tst-pldd
|
| FAIL: elf/tst-ldconfig-ld_so_conf-update # not true: dlopen
| FAIL: iconv/test-iconvconfig  # Needs gconv installed
| FAIL: io/ftwtest  # Requires execution by non-root
| FAIL: io/tst-lockf
| FAIL: libio/tst-wfile-sync
| FAIL: nptl/test-cond-printers # needs Python3 and target GDB on target
| FAIL: nptl/test-condattr-printers #ditto
| FAIL: nptl/test-mutex-printers#ditto
| FAIL: nptl/test-mutexattr-printers#ditto
| FAIL: nptl/test-rwlock-printers   #ditto
| FAIL: nptl/test-rwlockattr-printers   #ditto
| FAIL: nptl/tst-pthread-getattr# Cannot create testroot lock.
| FAIL: nptl/tst-umask1 # passes if run natively on target (NFS 
ACLv3 support needed)
| FAIL: nss/bug-erange
| FAIL: nss/tst-nss-db-endgrent # Cannot create testroot lock.
| FAIL: nss/tst-nss-db-endpwent #ditto
| FAIL: nss/tst-nss-files-hosts-long#ditto
| FAIL: nss/tst-nss-test3   #ditto
| FAIL: nss/tst-nss-files-hosts-getent  # Timed out
| FAIL: nss/tst-nss-files-hosts-multi   # Timed out
| FAIL: posix/bug-ga2   # DNS issue: google DNS vs. SNPS
| FAIL: posix/globtest  # require same user on target and host
| FAIL: posix/tst-getaddrinfo5  # passes outside corporate network
| FAIL: stdio-common/bug22  # Needs more RAM: 2 GB memory
| FAIL: sunrpc/bug20790 # missing cpp on target
| FAIL: timezone/tst-tzset  # passes outside corporate network


kindly review.

Thx,
-Vineet

Vineet Gupta (15):
  ARC: add definitions to elf/elf.h
  ARC: ABI Implementation
  ARC: startup and dynamic linking code
  ARC: Thread Local Storage support
  ARC: Atomics and Locking primitives
  ARC: math soft float support
  ARC: hardware floating point support
  ARC: Linux Syscall Interface
  ARC: Linux ABI
  ARC: Linux Startup and Dynamic Loading
  ARC: ABI lists
  ARC: Update syscall-names.list for ARC specific syscalls
  ARC: Build Infrastructure
  build-many-glibcs.py: Enable ARC builds
  Documentation for ARC port

 NEWS  |   11 +
 README|1 +
 elf/elf.h |   70 +-
 manual/install.texi   |5 +
 scripts/build-many-glibcs.py  |7 +
 sysdeps/arc/Implies   |3 +
 sysdeps/arc/Makefile  |   25 +
 sysdeps/arc/Versions  |6 +
 sysdeps/arc/__longjmp.S   |   50 +
 sysdeps/arc/abort-instr.h |2 +
 sysdeps/arc/atomic-machine.h  |   73 +
 sysdeps/arc/bits/endianness.h |   15 +
 sysdeps/arc/bits/fenv.h   |   77 +
 sysdeps/arc/bits/link.h   |   52 +
 sysdeps/arc/bits/setjmp.h

[PATCH v4 11/15] ARC: ABI lists

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/nofpu/libm-test-ulps  |  390 +++
 sysdeps/arc/nofpu/libm-test-ulps-name |1 +
 sysdeps/unix/sysv/linux/arc/c++-types.data|   67 +
 sysdeps/unix/sysv/linux/arc/ld.abilist|5 +
 .../sysv/linux/arc/libBrokenLocale.abilist|1 +
 sysdeps/unix/sysv/linux/arc/libanl.abilist|4 +
 sysdeps/unix/sysv/linux/arc/libc.abilist  | 2082 +
 sysdeps/unix/sysv/linux/arc/libcrypt.abilist  |2 +
 sysdeps/unix/sysv/linux/arc/libdl.abilist |9 +
 sysdeps/unix/sysv/linux/arc/libm.abilist  |  699 ++
 .../unix/sysv/linux/arc/libpthread.abilist|  217 ++
 sysdeps/unix/sysv/linux/arc/libresolv.abilist |   79 +
 sysdeps/unix/sysv/linux/arc/librt.abilist |   35 +
 .../unix/sysv/linux/arc/libthread_db.abilist  |   40 +
 sysdeps/unix/sysv/linux/arc/libutil.abilist   |6 +
 sysdeps/unix/sysv/linux/arc/localplt.data |   12 +
 16 files changed, 3649 insertions(+)
 create mode 100644 sysdeps/arc/nofpu/libm-test-ulps
 create mode 100644 sysdeps/arc/nofpu/libm-test-ulps-name
 create mode 100644 sysdeps/unix/sysv/linux/arc/c++-types.data
 create mode 100644 sysdeps/unix/sysv/linux/arc/ld.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libBrokenLocale.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libanl.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libc.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libcrypt.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libdl.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libm.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libpthread.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libresolv.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/librt.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libthread_db.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/libutil.abilist
 create mode 100644 sysdeps/unix/sysv/linux/arc/localplt.data

diff --git a/sysdeps/arc/nofpu/libm-test-ulps b/sysdeps/arc/nofpu/libm-test-ulps
new file mode 100644
index ..0e8ef313fa94
--- /dev/null
+++ b/sysdeps/arc/nofpu/libm-test-ulps
@@ -0,0 +1,390 @@
+# Begin of automatic generation
+
+# Maximal error of functions:
+Function: "acos":
+float: 1
+ifloat: 1
+
+Function: "acosh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: "asin":
+float: 1
+ifloat: 1
+
+Function: "asinh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "atan":
+float: 1
+ifloat: 1
+
+Function: "atan2":
+float: 1
+ifloat: 1
+
+Function: "atanh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: "cabs":
+double: 1
+idouble: 1
+
+Function: Real part of "cacos":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Imaginary part of "cacos":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: Real part of "cacosh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: Imaginary part of "cacosh":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: "carg":
+float: 1
+ifloat: 1
+
+Function: Real part of "casin":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "casin":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: Real part of "casinh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: Imaginary part of "casinh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "catan":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "catan":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "catanh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "catanh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "cbrt":
+double: 3
+float: 1
+idouble: 3
+ifloat: 1
+
+Function: Real part of "ccos":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "ccos":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "ccosh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "ccosh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "cexp":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+
+Function: Imaginary part of "cexp":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Real part of "clog":
+double: 3
+float: 3
+idouble: 3
+ifloat: 3
+
+Function: Imaginary part of "clog":
+float: 1
+ifloat: 1
+
+Function: Real part of "clog10":
+double: 3
+float: 4
+idouble: 3
+ifloat: 4
+
+Function: Imaginary part of "clog10":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: "cos":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "cosh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "cpow":
+double: 2
+float: 5
+idouble: 2
+ifloat: 5
+
+Function: Imaginary part of "cpow":
+float: 2
+ifloat: 2
+
+Function: Real part of "csin":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "csinh":
+float: 1
+ifloat: 1
+
+Function: Imaginary part of "csinh":

[PATCH v4 03/15] ARC: startup and dynamic linking code

2020-03-12 Thread Vineet Gupta

Code for C runtime startup and dynamic loading including PLT layout.

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/bits/link.h   |  52 ++
 sysdeps/arc/dl-machine.h  | 340 ++
 sysdeps/arc/entry.h   |   5 +
 sysdeps/arc/ldsodefs.h|  43 +
 sysdeps/arc/sotruss-lib.c |  51 ++
 sysdeps/arc/start.S   |  71 
 sysdeps/arc/tst-audit.h   |  23 +++
 7 files changed, 585 insertions(+)
 create mode 100644 sysdeps/arc/bits/link.h
 create mode 100644 sysdeps/arc/dl-machine.h
 create mode 100644 sysdeps/arc/entry.h
 create mode 100644 sysdeps/arc/ldsodefs.h
 create mode 100644 sysdeps/arc/sotruss-lib.c
 create mode 100644 sysdeps/arc/start.S
 create mode 100644 sysdeps/arc/tst-audit.h

diff --git a/sysdeps/arc/bits/link.h b/sysdeps/arc/bits/link.h
new file mode 100644
index ..0acbc1349e08
--- /dev/null
+++ b/sysdeps/arc/bits/link.h
@@ -0,0 +1,52 @@
+/* Machine-specific declarations for dynamic linker interface, ARC version.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#ifndef_LINK_H
+# error "Never include  directly; use  instead."
+#endif
+
+/* Registers for entry into PLT on ARC.  */
+typedef struct La_arc_regs
+{
+  uint32_t lr_reg[8]; /* r0 through r7 (upto 8 args).  */
+} La_arc_regs;
+
+/* Return values for calls from PLT on ARC.  */
+typedef struct La_arc_retval
+{
+  /* For ARCv2, a 64-bit integer return value can use 2 regs.  */
+  uint32_t lrv_reg[2];
+} La_arc_retval;
+
+__BEGIN_DECLS
+
+extern ElfW(Addr) la_arc_gnu_pltenter (ElfW(Sym) *__sym, unsigned int __ndx,
+uintptr_t *__refcook,
+uintptr_t *__defcook,
+La_arc_regs *__regs,
+unsigned int *__flags,
+const char *__symname,
+long int *__framesizep);
+extern unsigned int la_arc_gnu_pltexit (ElfW(Sym) *__sym, unsigned int __ndx,
+ uintptr_t *__refcook,
+ uintptr_t *__defcook,
+ const La_arc_regs *__inregs,
+ La_arc_retval *__outregs,
+ const char *symname);
+
+__END_DECLS
diff --git a/sysdeps/arc/dl-machine.h b/sysdeps/arc/dl-machine.h
new file mode 100644
index ..610401f8336d
--- /dev/null
+++ b/sysdeps/arc/dl-machine.h
@@ -0,0 +1,340 @@
+/* Machine-dependent ELF dynamic relocation inline functions.  ARC version.
+   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#ifndef dl_machine_h
+#define dl_machine_h
+
+#define ELF_MACHINE_NAME "arc"
+
+#include 
+
+#ifndef ENTRY_POINT
+# error ENTRY_POINT needs to be defined for ARC
+#endif
+
+#include 
+#include 
+#include 
+
+/* Dynamic Linking ABI for ARCv2 ISA.
+
+PLT
+   < DT_PLTGOT
+  |  ld r11, [pcl, off-to-GOT[1] |  0
+  |  |  4
+   plt0   |  ld r10, [pcl, off-to-GOT[2] |  8
+  |  | 12
+  |  j [r10] | 16
+  
+  |Base address of GOT   | 20
+  
+  |  ld r12, [pcl, off-to-GOT[3] | 24
+   plt1   |

[PATCH v4 10/15] ARC: Linux Startup and Dynamic Loading

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/start.S | 15 +++--
 sysdeps/unix/sysv/linux/arc/dl-static.c | 84 +
 sysdeps/unix/sysv/linux/arc/ldsodefs.h  | 32 ++
 3 files changed, 125 insertions(+), 6 deletions(-)
 create mode 100644 sysdeps/unix/sysv/linux/arc/dl-static.c
 create mode 100644 sysdeps/unix/sysv/linux/arc/ldsodefs.h

diff --git a/sysdeps/arc/start.S b/sysdeps/arc/start.S
index e006453dcd1f..25e43d71da9e 100644
--- a/sysdeps/arc/start.S
+++ b/sysdeps/arc/start.S
@@ -18,6 +18,8 @@
 
 #define __ASSEMBLY__ 1
 #include 
+#include 
+
 #ifndef ENTRY_POINT
 # error ENTRY_POINT needs to be defined for ARC
 #endif
@@ -31,11 +33,12 @@
 env[0...N]  environment variables (pointers)
 NULL.  */
 
-   .text
-   .align 4
-   .global __start
-   .type __start,@function
-__start:
+ENTRY (ENTRY_POINT)
+
+   /* Needed to make gdb backtraces stop here.  */
+   .cfi_label .Ldummy
+   cfi_undefined (blink)
+
mov fp, 0
ld_sr1, [sp]; argc
 
@@ -60,7 +63,7 @@ __start:
 
/* Should never get here.  */
flag1
-   .size  __start,.-__start
+END (ENTRY_POINT)
 
 /* Define a symbol for the first piece of initialized data.  */
.data
diff --git a/sysdeps/unix/sysv/linux/arc/dl-static.c 
b/sysdeps/unix/sysv/linux/arc/dl-static.c
new file mode 100644
index ..24c31b27fc11
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/dl-static.c
@@ -0,0 +1,84 @@
+/* Variable initialization.  ARC version.
+   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#include 
+
+#ifdef SHARED
+
+void
+_dl_var_init (void *array[])
+{
+  /* It has to match "variables" below. */
+  enum
+{
+  DL_PAGESIZE = 0
+};
+
+  GLRO(dl_pagesize) = *((size_t *) array[DL_PAGESIZE]);
+}
+
+#else
+
+static void *variables[] =
+{
+  &GLRO(dl_pagesize)
+};
+
+static void
+_dl_unprotect_relro (struct link_map *l)
+{
+  ElfW(Addr) start = ((l->l_addr + l->l_relro_addr)
+ & ~(GLRO(dl_pagesize) - 1));
+  ElfW(Addr) end = ((l->l_addr + l->l_relro_addr + l->l_relro_size)
+   & ~(GLRO(dl_pagesize) - 1));
+
+  if (start != end)
+__mprotect ((void *) start, end - start, PROT_READ | PROT_WRITE);
+}
+
+void
+_dl_static_init (struct link_map *l)
+{
+  struct link_map *rtld_map = l;
+  struct r_scope_elem **scope;
+  const ElfW(Sym) *ref = NULL;
+  lookup_t loadbase;
+  void (*f) (void *[]);
+  size_t i;
+
+  loadbase = _dl_lookup_symbol_x ("_dl_var_init", l, &ref, l->l_local_scope,
+ NULL, 0, 1, NULL);
+
+  for (scope = l->l_local_scope; *scope != NULL; scope++)
+for (i = 0; i < (*scope)->r_nlist; i++)
+  if ((*scope)->r_list[i] == loadbase)
+   {
+ rtld_map = (*scope)->r_list[i];
+ break;
+   }
+
+  if (ref != NULL)
+{
+  f = (void (*) (void *[])) DL_SYMBOL_ADDRESS (loadbase, ref);
+  _dl_unprotect_relro (rtld_map);
+  f (variables);
+  _dl_protect_relro (rtld_map);
+}
+}
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/arc/ldsodefs.h 
b/sysdeps/unix/sysv/linux/arc/ldsodefs.h
new file mode 100644
index ..9eef836168be
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/ldsodefs.h
@@ -0,0 +1,32 @@
+/* Run-time dynamic linker data structures for loaded ELF shared objects. ARC
+   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   .  */
+
+#ifndef_LDSODEFS_H
+
+/* Get the real definitions.  */
+

[PATCH v4 09/15] ARC: Linux ABI

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/nptl/pthreaddef.h | 32 +++
 sysdeps/unix/sysv/linux/arc/bits/procfs.h | 35 +++
 .../sysv/linux/arc/bits/types/__sigset_t.h| 12 +++
 sysdeps/unix/sysv/linux/arc/getcontext.S  | 63 +
 sysdeps/unix/sysv/linux/arc/makecontext.c | 75 +++
 sysdeps/unix/sysv/linux/arc/setcontext.S  | 92 +++
 sysdeps/unix/sysv/linux/arc/sigcontextinfo.h  | 28 ++
 sysdeps/unix/sysv/linux/arc/swapcontext.S | 92 +++
 sysdeps/unix/sysv/linux/arc/sys/cachectl.h| 36 
 sysdeps/unix/sysv/linux/arc/sys/ucontext.h| 63 +
 sysdeps/unix/sysv/linux/arc/sys/user.h| 31 +++
 sysdeps/unix/sysv/linux/arc/ucontext-macros.h | 29 ++
 sysdeps/unix/sysv/linux/arc/ucontext_i.sym| 20 
 13 files changed, 608 insertions(+)
 create mode 100644 sysdeps/arc/nptl/pthreaddef.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/bits/procfs.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/getcontext.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/makecontext.c
 create mode 100644 sysdeps/unix/sysv/linux/arc/setcontext.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/sigcontextinfo.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/swapcontext.S
 create mode 100644 sysdeps/unix/sysv/linux/arc/sys/cachectl.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/sys/ucontext.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/sys/user.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/ucontext-macros.h
 create mode 100644 sysdeps/unix/sysv/linux/arc/ucontext_i.sym

diff --git a/sysdeps/arc/nptl/pthreaddef.h b/sysdeps/arc/nptl/pthreaddef.h
new file mode 100644
index ..b265bf1a052c
--- /dev/null
+++ b/sysdeps/arc/nptl/pthreaddef.h
@@ -0,0 +1,32 @@
+/* pthread machine parameter definitions, ARC version.
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+/* Default stack size.  */
+#define ARCH_STACK_DEFAULT_SIZE(2 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning.  */
+#define STACK_ALIGN4
+
+/* Minimal stack size after allocating thread descriptor and guard size.  */
+#define MINIMAL_REST_STACK 2048
+
+/* Alignment requirement for TCB.  */
+#define TCB_ALIGNMENT  4
+
+/* Location of current stack frame.  */
+#define CURRENT_STACK_FRAME__builtin_frame_address (0)
diff --git a/sysdeps/unix/sysv/linux/arc/bits/procfs.h 
b/sysdeps/unix/sysv/linux/arc/bits/procfs.h
new file mode 100644
index ..e217e94eb6c0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arc/bits/procfs.h
@@ -0,0 +1,35 @@
+/* Types for registers for sys/procfs.h.  ARC version.
+   Copyright (C) 1996-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#ifndef _SYS_PROCFS_H
+# error "Never include  directly; use  instead."
+#endif
+
+#include 
+
+/* And the whole bunch of them.  We could have used `struct
+   user_regs' directly in the typedef, but tradition says that
+   the register set is an array, which does have some peculiar
+   semantics, so leave it that way.  */
+#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
+
+typedef unsigned long int elf_greg_t;
+typedef unsigned long int elf_gregset_t[ELF_NGREG];
+
+/* There's no seperate floating point reg file in ARCv2.  */
+typedef struct { } elf_fpregset_t;
diff --git a/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h 
b/sysdeps/uni

[PATCH v4 15/15] Documentation for ARC port

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 NEWS| 11 +++
 README  |  1 +
 manual/install.texi |  5 +
 3 files changed, 17 insertions(+)

diff --git a/NEWS b/NEWS
index b03681eb1462..fd1ef4f56429 100644
--- a/NEWS
+++ b/NEWS
@@ -17,6 +17,17 @@ Major new features:
 - rv32imafdc ilp32
 - rv32imafdc ilp32d
 
+* Support for ARC HS cores running Linux has been contributed by Synopsys.
+
+  Port requires atleast
+- binutils-2.32 (binutils-2_31-branch: commit 6ce881c15fc4, 2018-10-04)
+- gcc 8.3 (gcc-8-stable: commit 0d5ba57508c5, 2019-01-29)
+- Linux kernel 5.1+
+
+  ISA: ARCv2
+  ABI: 32-bit, soft-float, LE: /lib/ld-linux-arc.so.2 (compatible with
+   hard-float builds)
+
 Deprecated and removed features, and other changes affecting compatibility:
 
   [Add deprecations, removals and changes affecting compatibility here]
diff --git a/README b/README
index cee86ab178cf..73b4f9f3c907 100644
--- a/README
+++ b/README
@@ -24,6 +24,7 @@ The GNU C Library supports these configurations for using 
Linux kernels:
 
aarch64*-*-linux-gnu
alpha*-*-linux-gnu
+   arc-*-linux-gnu
arm-*-linux-gnueabi
csky-*-linux-gnuabiv2
hppa-*-linux-gnu
diff --git a/manual/install.texi b/manual/install.texi
index 71bf47cac659..c4b11e4e7973 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -507,6 +507,9 @@ the newest version of the compiler that is known to work 
for building
 release time, GCC 9.2.1 is the newest compiler verified to work to build
 @theglibc{}.
 
+For ARC architecture builds, GCC 8.3 is needed which has the necessary
+fixes to support @theglibc{}.
+
 For multi-arch support it is recommended to use a GCC which has been built with
 support for GNU indirect functions.  This ensures that correct debugging
 information is generated for functions selected by IFUNC resolvers.  This
@@ -528,6 +531,8 @@ No other assembler or linker has the necessary 
functionality at the
 moment. As of release time, GNU @code{binutils} 2.32 is the newest
 verified to work to build @theglibc{}.
 
+ARC architecture needs @code{binutils} 2.32 for TLS related fixes.
+
 @item
 GNU @code{texinfo} 4.7 or later
 
-- 
2.20.1


___
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linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc

[PATCH v4 04/15] ARC: Thread Local Storage support

2020-03-12 Thread Vineet Gupta

This includes all 4 TLS addressing models

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/dl-tls.h |  30 +++
 sysdeps/arc/libc-tls.c   |  27 ++
 sysdeps/arc/nptl/tcb-offsets.sym |  11 +++
 sysdeps/arc/nptl/tls.h   | 150 +++
 sysdeps/arc/stackinfo.h  |  33 +++
 5 files changed, 251 insertions(+)
 create mode 100644 sysdeps/arc/dl-tls.h
 create mode 100644 sysdeps/arc/libc-tls.c
 create mode 100644 sysdeps/arc/nptl/tcb-offsets.sym
 create mode 100644 sysdeps/arc/nptl/tls.h
 create mode 100644 sysdeps/arc/stackinfo.h

diff --git a/sysdeps/arc/dl-tls.h b/sysdeps/arc/dl-tls.h
new file mode 100644
index ..2269ac6c3daa
--- /dev/null
+++ b/sysdeps/arc/dl-tls.h
@@ -0,0 +1,30 @@
+/* Thread-local storage handling in the ELF dynamic linker.  ARC version.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+
+/* Type used for the representation of TLS information in the GOT.  */
+typedef struct
+{
+  unsigned long int ti_module;
+  unsigned long int ti_offset;
+} tls_index;
+
+extern void *__tls_get_addr (tls_index *ti);
+
+/* Value used for dtv entries for which the allocation is delayed.  */
+#define TLS_DTV_UNALLOCATED((void *) -1l)
diff --git a/sysdeps/arc/libc-tls.c b/sysdeps/arc/libc-tls.c
new file mode 100644
index ..ec88282de60e
--- /dev/null
+++ b/sysdeps/arc/libc-tls.c
@@ -0,0 +1,27 @@
+/* Thread-local storage handling in the ELF dynamic linker.  ARC version.
+   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#include 
+#include 
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+  dtv_t *dtv = THREAD_DTV ();
+  return (char *) dtv[1].pointer.val + ti->ti_offset;
+}
diff --git a/sysdeps/arc/nptl/tcb-offsets.sym b/sysdeps/arc/nptl/tcb-offsets.sym
new file mode 100644
index ..56950e0676ed
--- /dev/null
+++ b/sysdeps/arc/nptl/tcb-offsets.sym
@@ -0,0 +1,11 @@
+#include 
+#include 
+
+-- Derive offsets relative to the thread register.
+#define thread_offsetof(mem)   (long)(offsetof(struct pthread, mem) - 
sizeof(struct pthread))
+
+MULTIPLE_THREADS_OFFSEToffsetof (struct pthread, 
header.multiple_threads)
+TLS_PRE_TCB_SIZE   sizeof (struct pthread)
+TLS_TCB_SIZE   sizeof(tcbhead_t)
+
+PTHREAD_TIDoffsetof(struct pthread, tid)
diff --git a/sysdeps/arc/nptl/tls.h b/sysdeps/arc/nptl/tls.h
new file mode 100644
index ..10c7117527ff
--- /dev/null
+++ b/sysdeps/arc/nptl/tls.h
@@ -0,0 +1,150 @@
+/* Definition for thread-local data handling.  NPTL/ARC version.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#ifndef _ARC_NPTL_TLS_H
+#define _ARC_NPTL_TLS_H1
+
+#include 
+
+#ifndef __ASSEMBLER__
+# includ

[PATCH v4 02/15] ARC: ABI Implementation

2020-03-12 Thread Vineet Gupta

This code deals with the ARC ABI.

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/__longjmp.S   | 50 ++
 sysdeps/arc/abort-instr.h |  2 +
 sysdeps/arc/bits/endianness.h | 15 +++
 sysdeps/arc/bits/setjmp.h | 26 
 sysdeps/arc/bsd-_setjmp.S |  1 +
 sysdeps/arc/bsd-setjmp.S  |  1 +
 sysdeps/arc/dl-runtime.c  | 39 +
 sysdeps/arc/dl-sysdep.h   | 25 +++
 sysdeps/arc/dl-trampoline.S   | 80 +++
 sysdeps/arc/gccframe.h| 21 +
 sysdeps/arc/gmp-mparam.h  | 23 ++
 sysdeps/arc/jmpbuf-offsets.h  | 47 
 sysdeps/arc/jmpbuf-unwind.h   | 47 
 sysdeps/arc/machine-gmon.h| 35 +++
 sysdeps/arc/memusage.h| 23 ++
 sysdeps/arc/setjmp.S  | 66 +
 sysdeps/arc/sysdep.h  | 48 +
 sysdeps/arc/tls-macros.h  | 47 
 18 files changed, 596 insertions(+)
 create mode 100644 sysdeps/arc/__longjmp.S
 create mode 100644 sysdeps/arc/abort-instr.h
 create mode 100644 sysdeps/arc/bits/endianness.h
 create mode 100644 sysdeps/arc/bits/setjmp.h
 create mode 100644 sysdeps/arc/bsd-_setjmp.S
 create mode 100644 sysdeps/arc/bsd-setjmp.S
 create mode 100644 sysdeps/arc/dl-runtime.c
 create mode 100644 sysdeps/arc/dl-sysdep.h
 create mode 100644 sysdeps/arc/dl-trampoline.S
 create mode 100644 sysdeps/arc/gccframe.h
 create mode 100644 sysdeps/arc/gmp-mparam.h
 create mode 100644 sysdeps/arc/jmpbuf-offsets.h
 create mode 100644 sysdeps/arc/jmpbuf-unwind.h
 create mode 100644 sysdeps/arc/machine-gmon.h
 create mode 100644 sysdeps/arc/memusage.h
 create mode 100644 sysdeps/arc/setjmp.S
 create mode 100644 sysdeps/arc/sysdep.h
 create mode 100644 sysdeps/arc/tls-macros.h

diff --git a/sysdeps/arc/__longjmp.S b/sysdeps/arc/__longjmp.S
new file mode 100644
index ..ffc3daa7de72
--- /dev/null
+++ b/sysdeps/arc/__longjmp.S
@@ -0,0 +1,50 @@
+/* longjmp for ARC.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#include 
+#include 
+
+;@ r0 = jump buffer from which regs will be restored
+;@ r1 = value that setjmp( ) will return due to this longjmp
+
+ENTRY (__longjmp)
+
+   ld_s r13,   [r0]
+   ld_s r14,   [r0,4]
+   ld   r15,   [r0,8]
+   ld   r16,   [r0,12]
+   ld   r17,   [r0,16]
+   ld   r18,   [r0,20]
+   ld   r19,   [r0,24]
+   ld   r20,   [r0,28]
+   ld   r21,   [r0,32]
+   ld   r22,   [r0,36]
+   ld   r23,   [r0,40]
+   ld   r24,   [r0,44]
+   ld   r25,   [r0,48]
+
+   ld   blink, [r0,60]
+   ld   fp,[r0,52]
+   ld   sp,[r0,56]
+
+   mov.f  r0, r1   ; get the setjmp return value(due to longjmp) in place
+
+   j.d[blink]  ; to caller of setjmp location, right after the call
+   mov.z  r0, 1; can't let setjmp return 0 when it is due to longjmp
+
+END (__longjmp)
diff --git a/sysdeps/arc/abort-instr.h b/sysdeps/arc/abort-instr.h
new file mode 100644
index ..49f33613c404
--- /dev/null
+++ b/sysdeps/arc/abort-instr.h
@@ -0,0 +1,2 @@
+/* FLAG 1 is privilege mode only instruction, hence will crash any program.  */
+#define ABORT_INSTRUCTION asm ("flag 1")
diff --git a/sysdeps/arc/bits/endianness.h b/sysdeps/arc/bits/endianness.h
new file mode 100644
index ..8f17ca84b485
--- /dev/null
+++ b/sysdeps/arc/bits/endianness.h
@@ -0,0 +1,15 @@
+#ifndef _BITS_ENDIANNESS_H
+#define _BITS_ENDIANNESS_H 1
+
+#ifndef _BITS_ENDIAN_H
+# error "Never use  directly; include  instead."
+#endif
+
+/* ARC has selectable endianness.  */
+#ifdef __BIG_ENDIAN__
+# define __BYTE_ORDER __BIG_ENDIAN
+#else
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
+
+#endif /* bits/endianness.h */
diff --git a/sysdeps/arc/bits/setjmp.h b/sysdeps/arc/bits/setjmp.h
new file mode 100644
index ..333e5cce3bea
--- /dev/null
+++ b/sysdeps/arc/bits/setjmp.h
@@ -0,0 +1,26 @@
+/* Define the machine-dependent type `jmp_buf'.  ARC version.
+   Copyright (C) 1992-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the

[PATCH v4 05/15] ARC: Atomics and Locking primitives

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/atomic-machine.h  | 73 +++
 sysdeps/arc/nptl/bits/semaphore.h | 32 ++
 2 files changed, 105 insertions(+)
 create mode 100644 sysdeps/arc/atomic-machine.h
 create mode 100644 sysdeps/arc/nptl/bits/semaphore.h

diff --git a/sysdeps/arc/atomic-machine.h b/sysdeps/arc/atomic-machine.h
new file mode 100644
index ..ae16c607dcc4
--- /dev/null
+++ b/sysdeps/arc/atomic-machine.h
@@ -0,0 +1,73 @@
+/* Low-level functions for atomic operations. ARC version.
+   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#ifndef _ARC_BITS_ATOMIC_H
+#define _ARC_BITS_ATOMIC_H 1
+
+#include 
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+#define __HAVE_64B_ATOMICS 0
+#define USE_ATOMIC_COMPILER_BUILTINS 1
+
+/* ARC does have legacy atomic EX reg, [mem] instruction but the micro-arch
+   is not as optimal as LLOCK/SCOND specially for SMP.  */
+#define ATOMIC_EXCHANGE_USES_CAS 1
+
+#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval)\
+  (abort (), 0)
+#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval)   \
+  (abort (), 0)
+#define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval)   \
+  (abort (), 0)
+
+#define __arch_compare_and_exchange_val_8_int(mem, newval, oldval, model)  
\
+  (abort (), (__typeof (*mem)) 0)
+#define __arch_compare_and_exchange_val_16_int(mem, newval, oldval, model) 
\
+  (abort (), (__typeof (*mem)) 0)
+#define __arch_compare_and_exchange_val_64_int(mem, newval, oldval, model) 
\
+  (abort (), (__typeof (*mem)) 0)
+
+#define __arch_compare_and_exchange_val_32_int(mem, newval, oldval, model) 
\
+  ({   
\
+typeof (*mem) __oldval = (oldval); 
\
+__atomic_compare_exchange_n (mem, (void *) &__oldval, newval, 0,   
\
+ model, __ATOMIC_RELAXED); 
\
+__oldval;  
\
+  })
+
+#define atomic_compare_and_exchange_val_acq(mem, new, old) \
+  __atomic_val_bysize (__arch_compare_and_exchange_val, int,   \
+  mem, new, old, __ATOMIC_ACQUIRE)
+
+#ifdef __ARC700__
+#define atomic_full_barrier()  ({ asm volatile ("sync":::"memory"); })
+#else
+#define atomic_full_barrier()  ({ asm volatile ("dmb 3":::"memory"); })
+#endif
+
+#endif /* _ARC_BITS_ATOMIC_H */
diff --git a/sysdeps/arc/nptl/bits/semaphore.h 
b/sysdeps/arc/nptl/bits/semaphore.h
new file mode 100644
index ..772dc4cb9b01
--- /dev/null
+++ b/sysdeps/arc/nptl/bits/semaphore.h
@@ -0,0 +1,32 @@
+/* Machine-specific POSIX semaphore type layouts.  ARC version.
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   .  */
+
+#ifndef _SEMAPHORE_H
+# error "Never use  directly; include  instead."
+#endif
+
+#define __SIZEOF_SEM_T 16
+
+/* Value returned if `sem_open' failed.  */
+#define SEM_FAILED  ((sem_t *) 0)
+
+typedef union
+{
+  char __size[__SIZEOF_SEM_T];
+  long int __align;
+} sem_t;
-- 
2.20.1


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[PATCH v4 06/15] ARC: math soft float support

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 sysdeps/arc/bits/fenv.h   | 72 ++
 sysdeps/arc/nofpu/Implies |  1 +
 sysdeps/arc/nofpu/math-tests-exceptions.h | 27 +
 sysdeps/arc/nofpu/math-tests-rounding.h   | 27 +
 sysdeps/arc/sfp-machine.h | 73 +++
 5 files changed, 200 insertions(+)
 create mode 100644 sysdeps/arc/bits/fenv.h
 create mode 100644 sysdeps/arc/nofpu/Implies
 create mode 100644 sysdeps/arc/nofpu/math-tests-exceptions.h
 create mode 100644 sysdeps/arc/nofpu/math-tests-rounding.h
 create mode 100644 sysdeps/arc/sfp-machine.h

diff --git a/sysdeps/arc/bits/fenv.h b/sysdeps/arc/bits/fenv.h
new file mode 100644
index ..547f0103a53d
--- /dev/null
+++ b/sysdeps/arc/bits/fenv.h
@@ -0,0 +1,72 @@
+/* Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   .  */
+
+#ifndef _FENV_H
+# error "Never use  directly; include  instead."
+#endif
+
+enum
+  {
+FE_INVALID   =
+# define FE_INVALID(0x01)
+  FE_INVALID,
+FE_DIVBYZERO =
+# define FE_DIVBYZERO  (0x02)
+  FE_DIVBYZERO,
+FE_OVERFLOW  =
+# define FE_OVERFLOW   (0x04)
+  FE_OVERFLOW,
+FE_UNDERFLOW =
+# define FE_UNDERFLOW  (0x08)
+  FE_UNDERFLOW,
+FE_INEXACT   =
+# define FE_INEXACT(0x10)
+  FE_INEXACT
+  };
+
+# define FE_ALL_EXCEPT \
+   (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
+
+enum
+  {
+FE_TOWARDZERO =
+# define FE_TOWARDZERO (0x0)
+  FE_TOWARDZERO,
+FE_TONEAREST  =
+# define FE_TONEAREST  (0x1)
+  FE_TONEAREST,
+FE_UPWARD =
+# define FE_UPWARD (0x2)
+  FE_UPWARD,
+FE_DOWNWARD   =
+# define FE_DOWNWARD   (0x3)
+  FE_DOWNWARD
+  };
+
+typedef unsigned int fexcept_t;
+typedef unsigned int fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV ((const fenv_t *) -1)
+
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+/* Type representing floating-point control modes.  */
+typedef unsigned int femode_t;
+
+/* Default floating-point control modes.  */
+# define FE_DFL_MODE   ((const femode_t *) -1L)
+#endif
diff --git a/sysdeps/arc/nofpu/Implies b/sysdeps/arc/nofpu/Implies
new file mode 100644
index ..abcbadb25f22
--- /dev/null
+++ b/sysdeps/arc/nofpu/Implies
@@ -0,0 +1 @@
+ieee754/soft-fp
diff --git a/sysdeps/arc/nofpu/math-tests-exceptions.h 
b/sysdeps/arc/nofpu/math-tests-exceptions.h
new file mode 100644
index ..7d74720db94b
--- /dev/null
+++ b/sysdeps/arc/nofpu/math-tests-exceptions.h
@@ -0,0 +1,27 @@
+/* Configuration for math tests. exceptions support ARC version.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   .  */
+
+#ifndef ARC_NOFPU_MATH_TESTS_EXCEPTIONS_H
+#define ARC_NOFPU_MATH_TESTS_EXCEPTIONS_H 1
+
+/* Soft-float doesnot support exceptions.  */
+#define EXCEPTION_TESTS_float  0
+#define EXCEPTION_TESTS_double 0
+#define EXCEPTION_TESTS_long_double0
+
+#endif
diff --git a/sysdeps/arc/nofpu/math-tests-rounding.h 
b/sysdeps/arc/nofpu/math-tests-rounding.h
new file mode 100644
index ..6e5376cb35b5
--- /dev/null
+++ b/sysdeps/arc/nofpu/math-tests-rounding.h
@@ -0,0 +1,27 @@
+/* Configuration for math tests: rounding mode support.  ARC version.
+   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+

[PATCH v4 14/15] build-many-glibcs.py: Enable ARC builds

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 scripts/build-many-glibcs.py | 7 +++
 1 file changed, 7 insertions(+)

diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
index 0f6c4a5e3a08..011a30494e1a 100755
--- a/scripts/build-many-glibcs.py
+++ b/scripts/build-many-glibcs.py
@@ -162,6 +162,12 @@ class Context(object):
'cfg': ['--disable-multi-arch']}])
 self.add_config(arch='aarch64_be',
 os_name='linux-gnu')
+self.add_config(arch='arc',
+os_name='linux-gnu',
+gcc_cfg=['--disable-multilib', '--with-cpu=hs38'])
+self.add_config(arch='arc',
+os_name='linux-gnuhf',
+gcc_cfg=['--disable-multilib', 
'--with-cpu=hs38_linux'])
 self.add_config(arch='alpha',
 os_name='linux-gnu')
 self.add_config(arch='arm',
@@ -1239,6 +1245,7 @@ def install_linux_headers(policy, cmdlist):
 """Install Linux kernel headers."""
 arch_map = {'aarch64': 'arm64',
 'alpha': 'alpha',
+'arc': 'arc',
 'arm': 'arm',
 'csky': 'csky',
 'hppa': 'parisc',
-- 
2.20.1


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[PATCH v4 01/15] ARC: add definitions to elf/elf.h

2020-03-12 Thread Vineet Gupta

Signed-off-by: Vineet Gupta 
---
 elf/elf.h | 70 ++-
 1 file changed, 69 insertions(+), 1 deletion(-)

diff --git a/elf/elf.h b/elf/elf.h
index ab8930463c67..51e9968405ff 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -330,7 +330,7 @@ typedef struct
 #define EM_CLOUDSHIELD 192 /* CloudShield */
 #define EM_COREA_1ST   193 /* KIPO-KAIST Core-A 1st gen. */
 #define EM_COREA_2ND   194 /* KIPO-KAIST Core-A 2nd gen. */
-#define EM_ARC_COMPACT2195 /* Synopsys ARCompact V2 */
+#define EM_ARCV2   195 /* Synopsys ARCv2 ISA.  */
 #define EM_OPEN8   196 /* Open8 RISC */
 #define EM_RL78197 /* Renesas RL78 */
 #define EM_VIDEOCORE5  198 /* Broadcom VideoCore V */
@@ -4028,6 +4028,74 @@ enum
 #define R_NDS32_TLS_TPOFF  102
 #define R_NDS32_TLS_DESC   119
 
+/* ARCompact/ARCv2 specific relocs.  */
+#define R_ARC_NONE 0x0
+#define R_ARC_80x1
+#define R_ARC_16   0x2
+#define R_ARC_24   0x3
+#define R_ARC_32   0x4
+#define R_ARC_B26  0x5
+#define R_ARC_B22_PCREL0x6
+#define R_ARC_H30  0x7
+#define R_ARC_N8   0x8
+#define R_ARC_N16  0x9
+#define R_ARC_N24  0xA
+#define R_ARC_N32  0xB
+#define R_ARC_SDA  0xC
+#define R_ARC_SECTOFF  0xD
+#define R_ARC_S21H_PCREL   0xE
+#define R_ARC_S21W_PCREL   0xF
+#define R_ARC_S25H_PCREL   0x10
+#define R_ARC_S25W_PCREL   0x11
+#define R_ARC_SDA320x12
+#define R_ARC_SDA_LDST 0x13
+#define R_ARC_SDA_LDST10x14
+#define R_ARC_SDA_LDST20x15
+#define R_ARC_SDA16_LD 0x16
+#define R_ARC_SDA16_LD10x17
+#define R_ARC_SDA16_LD20x18
+#define R_ARC_S13_PCREL0x19
+#define R_ARC_W0x1A
+#define R_ARC_32_ME0x1B
+#define R_ARC_N32_ME   0x1C
+#define R_ARC_SECTOFF_ME   0x1D
+#define R_ARC_SDA32_ME 0x1E
+#define R_ARC_W_ME 0x1F
+#define R_ARC_H30_ME   0x20
+#define R_ARC_SECTOFF_U8   0x21
+#define R_ARC_SECTOFF_S9   0x22
+#define R_AC_SECTOFF_U80x23
+#define R_AC_SECTOFF_U8_1  0x24
+#define R_AC_SECTOFF_U8_2  0x25
+#define R_AC_SECTOFF_S90x26
+#define R_AC_SECTOFF_S9_1  0x27
+#define R_AC_SECTOFF_S9_2  0x28
+#define R_ARC_SECTOFF_ME_1 0x29
+#define R_ARC_SECTOFF_ME_2 0x2A
+#define R_ARC_SECTOFF_10x2B
+#define R_ARC_SECTOFF_20x2C
+#define R_ARC_PC32 0x32
+#define R_ARC_GOTPC32  0x33
+#define R_ARC_PLT320x34
+#define R_ARC_COPY 0x35
+#define R_ARC_GLOB_DAT 0x36
+#define R_ARC_JUMP_SLOT0x37
+#define R_ARC_RELATIVE 0x38
+#define R_ARC_GOTOFF   0x39
+#define R_ARC_GOTPC0x3A
+#define R_ARC_GOT320x3B
+
+#define R_ARC_TLS_DTPMOD   0x42
+#define R_ARC_TLS_DTPOFF   0x43
+#define R_ARC_TLS_TPOFF0x44
+#define R_ARC_TLS_GD_GOT   0x45
+#define R_ARC_TLS_GD_LD0x46
+#define R_ARC_TLS_GD_CALL  0x47
+#define R_ARC_TLS_IE_GOT   0x48
+#define R_ARC_TLS_DTPOFF_S90x4a
+#define R_ARC_TLS_LE_S90x4a
+#define R_ARC_TLS_LE_320x4b
+
 __END_DECLS
 
 #endif /* elf.h */
-- 
2.20.1


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Re: [RESEND PATCH v2 8/9] media: fsl-viu: Constify ioreadX() iomem argument (as in generic implementation)

Re: [RESEND PATCH v2 6/9] drm/mgag200: Constify ioreadX() iomem argument (as in generic implementation)

Re: [RESEND PATCH v2 1/9] iomap: Constify ioreadX() iomem argument (as in generic implementation)

Re: [PATCH] Linux: Remove and the sysctl function

[PATCH v2] Force 64-bit time based syscalls for TIMESIZE==64

Re: [PATCH v3 00/17] glibc port to ARC processors

Re: [PATCH v3 00/17] glibc port to ARC processors

[PATCH v4 08/15] ARC: Linux Syscall Interface

[PATCH v4 13/15] ARC: Build Infrastructure

[PATCH v4 07/15] ARC: hardware floating point support

[PATCH v4 12/15] ARC: Update syscall-names.list for ARC specific syscalls

[PATCH v4 00/15] glibc port to ARC processors

[PATCH v4 11/15] ARC: ABI lists

[PATCH v4 03/15] ARC: startup and dynamic linking code

[PATCH v4 10/15] ARC: Linux Startup and Dynamic Loading

[PATCH v4 09/15] ARC: Linux ABI

[PATCH v4 15/15] Documentation for ARC port

[PATCH v4 04/15] ARC: Thread Local Storage support

[PATCH v4 02/15] ARC: ABI Implementation

[PATCH v4 05/15] ARC: Atomics and Locking primitives

[PATCH v4 06/15] ARC: math soft float support

[PATCH v4 14/15] build-many-glibcs.py: Enable ARC builds

[PATCH v4 01/15] ARC: add definitions to elf/elf.h

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