[PATCH] glibc: add arc700 patch
Vineet Gupta
Vineet.Gupta1 at synopsys.com
Tue Jan 12 14:50:18 EST 2021
On 1/12/21 11:40 AM, Alexey Brodkin wrote:
> Hi Paul,
>
> With that patch I obviously get basic target image built successfully
> but then it fails to boot that way:
> ------------------------------>8------------------------------
> [ 0.554310] Run /init as init process
> [ 0.554665] usercopy: Kernel memory overwrite attempt detected to
> kernel text (offset 98294, size 6)!
> [ 0.554733] usercopy: BUG: failure at
> mm/usercopy.c:99/usercopy_abort()!
> [ 0.554789]
> [ 0.554789] gcc generated __builtin_trap
> [ 0.554833] Path: (null)
> [ 0.554897] CPU: 0 PID: 1 Comm: swapper Not tainted 5.4.87 #0
> [ 0.554945]
> [ 0.554945] [ECR ]: 0x00250005 => gcc generated __builtin_trap
> [ 0.555058] [EFA ]: 0x807fc9f0
> [ 0.555058] [BLINK ]: usercopy_abort+0x88/0x8c
> [ 0.555058] [ERET ]: usercopy_abort+0x8a/0x8c
> [ 0.555121] [STAT32]: 0x00000806 : K E2 E1
> [ 0.555209] BTA: 0x807fc9f0 SP: 0x8f02bef8 FP: 0x00000000
> [ 0.555270] LPS: 0x80aedbb0 LPE: 0x80aedbbe LPC: 0x00000000
> [ 0.555487] r00: 0x0000003c r01: 0x0000000a r02: 0x00000000
> [ 0.555487] r03: 0x80c24ba4 r04: 0x00000800 r05: 0x00000000
> [ 0.555487] r06: 0x00000006 r07: 0x00000006 r08: 0x00000000
> [ 0.555487] r09: 0x00000049 r10: 0x22eeb13c r11: 0x11c05fc3
> [ 0.555487] r12: 0x00000000 r13: 0x80715ff6 r14: 0x00000006
> [ 0.555487] r15: 0x80715ffc r16: 0x00000000 r17: 0x8f120010
> [ 0.555487] r18: 0x00000000 r19: 0x8fec8d90 r20: 0x8f17be00
> [ 0.555487] r21: 0x8fec8d90 r22: 0x80714000 r23: 0x5fffe000
> [ 0.555487] r24: 0x8f02a000 r25: 0x8f038000
> [ 0.555487]
> [ 0.555487]
> [ 0.555884]
> [ 0.555884] Stack Trace:
> [ 0.555942] usercopy_abort+0x8a/0x8c
> ------------------------------>8------------------------------
This could be unrelated to glibc and just be the kernel issue we've
known for a while.
https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/15
Try disabling CONFIG_HARDENED_USERCOPY
-Vineet
>
> Originally I got it with GCC 8.4 but later exactly the same was
> reproduced with GCC 9.3 so it seems to be not related to the compiler,
> but rather hints at some corner-case in the kernel configuration which
> gives such a behavior.
>
> I created a bug-report here about that problem:
> https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/35
> <https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/35>.
>
> IMHO we may apply suggested patch for glibc in OpenWrt and in the
> meantime debug observed problem.
>
> BTW we now have a free version of Synopsys proprietary simulator nSIM
> (available after a simple click-through registration here
> https://www.synopsys.com/cgi-bin/dwarcnsim/req1.cgi
> <https://www.synopsys.com/cgi-bin/dwarcnsim/req1.cgi>) which might be
> used for test runs.
>
> -Alexey
>
> ------------------------------------------------------------------------
> *From:* Paul Spooren <mail at aparcar.org>
> *Sent:* Monday, December 28, 2020 11:37 PM
> *To:* Alexey Brodkin <abrodkin at synopsys.com>
> *Cc:* Hans Dedecker <dedeckeh at gmail.com>; openwrt-devel
> <openwrt-devel at lists.openwrt.org>; Rosen Penev <rosenp at gmail.com>
> *Subject:* Re: [PATCH] glibc: add arc700 patch
> Hi Alexey,
>
> could you please test this patch? I have no devboard at hand.
>
> Kind regards,
> Paul
>
> On So, Dez 27, 2020 at 15:29, Rosen Penev <rosenp at gmail.com> wrote:
> > On Sat, Dec 26, 2020 at 11:50 AM Hans Dedecker <dedeckeh at gmail.com>
> > wrote:
> >>
> >> Hi,
> >>
> >> On Fri, Dec 25, 2020 at 1:37 AM Rosen Penev <rosenp at gmail.com>
> >> wrote:
> >> >
> >> > glibc does not officially support ARC700 so this adds the missing
> >> > pieces. I looked at uClibc-ng and a patch by Synopsis for glibc.
> >> >
> >> > ran make toolchain/glibc/refresh to clean up fuzz.
> >> >
> >> > Signed-off-by: Rosen Penev <rosenp at gmail.com>
> >> > ---
> >> > toolchain/glibc/common.mk | 2 +-
> >> > ...use-of-DES-encryption-functions-in-n.patch | 87
> >> +++++++------------
> >> > .../glibc/patches/100-fix_cross_rpcgen.patch | 1 +
> >> > toolchain/glibc/patches/300-arc.patch | 55 ++++++++++++
> >> Will the ARC700 patch be pushed upstream ?
> > Up to Synopsis.
> >>
> >> Hans
> >> > 4 files changed, 87 insertions(+), 58 deletions(-)
> >> > create mode 100644 toolchain/glibc/patches/300-arc.patch
> >> >
> >> > diff --git a/toolchain/glibc/common.mk b/toolchain/glibc/common.mk
> >> > index faf749eea3..555bd19a61 100644
> >> > --- a/toolchain/glibc/common.mk
> >> > +++ b/toolchain/glibc/common.mk
> >> > @@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
> >> >
> >> > PKG_NAME:=glibc
> >> > PKG_VERSION:=2.32
> >> > -PKG_RELEASE:=1
> >> > +PKG_RELEASE:=2
> >> >
> >> > PKG_SOURCE_PROTO:=git
> >> > PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
> >> > diff --git
> >>
> a/toolchain/glibc/patches/050-Revert-Disallow-use-of-DES-encryption-functions-in-n.patch
> >>
> b/toolchain/glibc/patches/050-Revert-Disallow-use-of-DES-encryption-functions-in-n.patch
> >> > index 002e7a1770..10d9f65d18 100644
> >> > ---
> >>
> a/toolchain/glibc/patches/050-Revert-Disallow-use-of-DES-encryption-functions-in-n.patch
> >> > +++
> >>
> b/toolchain/glibc/patches/050-Revert-Disallow-use-of-DES-encryption-functions-in-n.patch
> >> > @@ -23,11 +23,9 @@ provides them.
> >> > sunrpc/des_soft.c | 2 +-
> >> > 13 files changed, 305 insertions(+), 90 deletions(-)
> >> >
> >> > -diff --git a/conform/data/stdlib.h-data
> >> b/conform/data/stdlib.h-data
> >> > -index 6913828196..d8fcccc2fb 100644
> >> > --- a/conform/data/stdlib.h-data
> >> > +++ b/conform/data/stdlib.h-data
> >> > -@@ -149,6 +149,9 @@ function {unsigned short int*} seed48
> >> (unsigned short int[3])
> >> > +@@ -149,6 +149,9 @@ function {unsigned short int*} seed48 (u
> >> > #if !defined ISO && !defined ISO99 && !defined ISO11 &&
> >> !defined POSIX && !defined XPG4 && !defined XPG42 && !defined UNIX98
> >> > function int setenv (const char*, const char*, int)
> >> > #endif
> >> > @@ -37,8 +35,6 @@ index 6913828196..d8fcccc2fb 100644
> >> > #if !defined ISO && !defined ISO99 && !defined ISO11 &&
> >> !defined XPG4 && !defined POSIX && !defined POSIX2008
> >> > function {char*} setstate (char*)
> >> > #endif
> >> > -diff --git a/conform/data/unistd.h-data
> >> b/conform/data/unistd.h-data
> >> > -index aa070528e8..ddf4f25132 100644
> >> > --- a/conform/data/unistd.h-data
> >> > +++ b/conform/data/unistd.h-data
> >> > @@ -437,6 +437,9 @@ function int chroot (const char*)
> >> > @@ -61,8 +57,6 @@ index aa070528e8..ddf4f25132 100644
> >> > function int execl (const char*, const char*, ...)
> >> > function int execle (const char*, const char*, ...)
> >> > function int execlp (const char*, const char*, ...)
> >> > -diff --git a/crypt/cert.c b/crypt/cert.c
> >> > -index e070ca398d..80029e9078 100644
> >> > --- a/crypt/cert.c
> >> > +++ b/crypt/cert.c
> >> > @@ -10,22 +10,6 @@
> >> > @@ -102,8 +96,6 @@ index e070ca398d..80029e9078 100644
> >> > -}
> >> > -
> >> > -#endif
> >> > -diff --git a/crypt/crypt-entry.c b/crypt/crypt-entry.c
> >> > -index 502b5846f0..09332c690a 100644
> >> > --- a/crypt/crypt-entry.c
> >> > +++ b/crypt/crypt-entry.c
> >> > @@ -35,7 +35,6 @@
> >> > @@ -114,7 +106,7 @@ index 502b5846f0..09332c690a 100644
> >> >
> >> > /* Prototypes for local functions. */
> >> > #ifndef __GNU_LIBRARY__
> >> > -@@ -177,7 +176,17 @@ crypt (const char *key, const char *salt)
> >> > +@@ -177,7 +176,17 @@ crypt (const char *key, const char *salt
> >> > return __crypt_r (key, salt, &_ufc_foobar);
> >> > }
> >> >
> >> > @@ -134,8 +126,6 @@ index 502b5846f0..09332c690a 100644
> >> > + return crypt (key, salt);
> >> > +}
> >> > #endif
> >> > -diff --git a/crypt/crypt.h b/crypt/crypt.h
> >> > -index ca8ad456cc..7d0de95018 100644
> >> > --- a/crypt/crypt.h
> >> > +++ b/crypt/crypt.h
> >> > @@ -36,6 +36,14 @@ __BEGIN_DECLS
> >> > @@ -168,8 +158,6 @@ index ca8ad456cc..7d0de95018 100644
> >> > #endif
> >> >
> >> > __END_DECLS
> >> > -diff --git a/crypt/crypt_util.c b/crypt/crypt_util.c
> >> > -index 4b2f0a89cb..b012cde6bd 100644
> >> > --- a/crypt/crypt_util.c
> >> > +++ b/crypt/crypt_util.c
> >> > @@ -34,7 +34,6 @@
> >> > @@ -196,7 +184,7 @@ index 4b2f0a89cb..b012cde6bd 100644
> >> >
> >> > /*
> >> > * This is the final
> >> > -@@ -788,7 +785,6 @@ _ufc_output_conversion_r (ufc_long v1,
> >> ufc_long v2, const char *salt,
> >> > +@@ -788,7 +785,6 @@ _ufc_output_conversion_r (ufc_long v1, u
> >> > __data->crypt_3_buf[13] = 0;
> >> > }
> >> >
> >> > @@ -204,7 +192,7 @@ index 4b2f0a89cb..b012cde6bd 100644
> >> >
> >> > /*
> >> > * UNIX encrypt function. Takes a bitvector
> >> > -@@ -889,14 +885,12 @@ __encrypt_r (char *__block, int __edflag,
> >> > +@@ -889,14 +885,12 @@ __encrypt_r (char *__block, int __edflag
> >> > }
> >> > }
> >> > weak_alias (__encrypt_r, encrypt_r)
> >> > @@ -219,7 +207,7 @@ index 4b2f0a89cb..b012cde6bd 100644
> >> >
> >> >
> >> > /*
> >> > -@@ -921,15 +915,12 @@ __setkey_r (const char *__key, struct
> >> crypt_data * __restrict __data)
> >> > +@@ -921,15 +915,12 @@ __setkey_r (const char *__key, struct cr
> >> > _ufc_mk_keytab_r((char *) ktab, __data);
> >> > }
> >> > weak_alias (__setkey_r, setkey_r)
> >> > @@ -235,11 +223,9 @@ index 4b2f0a89cb..b012cde6bd 100644
> >> >
> >> > void
> >> > __b64_from_24bit (char **cp, int *buflen,
> >> > -diff --git a/manual/conf.texi b/manual/conf.texi
> >> > -index f959b00bb6..51fb2f5aa1 100644
> >> > --- a/manual/conf.texi
> >> > +++ b/manual/conf.texi
> >> > -@@ -780,8 +780,6 @@ Inquire about the parameter corresponding to
> >> @code{_XOPEN_LEGACY}.
> >> > +@@ -780,8 +780,6 @@ Inquire about the parameter correspondin
> >> > @item _SC_XOPEN_CRYPT
> >> > @standards{X/Open, unistd.h}
> >> > Inquire about the parameter corresponding to
> >> @code{_XOPEN_CRYPT}.
> >> > @@ -248,11 +234,9 @@ index f959b00bb6..51fb2f5aa1 100644
> >> >
> >> > @item _SC_XOPEN_ENH_I18N
> >> > @standards{X/Open, unistd.h}
> >> > -diff --git a/manual/crypt.texi b/manual/crypt.texi
> >> > -index af23dd7847..1b151f2d74 100644
> >> > --- a/manual/crypt.texi
> >> > +++ b/manual/crypt.texi
> >> > -@@ -16,8 +16,19 @@ subject to them, even if you do not use the
> >> functions in this chapter
> >> > +@@ -16,8 +16,19 @@ subject to them, even if you do not use
> >> > yourself. The restrictions vary from place to place and are
> >> changed
> >> > often, so we cannot give any more specific advice than this
> >> warning.
> >> >
> >> > @@ -272,7 +256,7 @@ index af23dd7847..1b151f2d74 100644
> >> > * Unpredictable Bytes:: Randomness for cryptographic
> >> purposes.
> >> > @end menu
> >> >
> >> > -@@ -190,6 +201,199 @@ unpredictable as possible;
> >> @pxref{Unpredictable Bytes}.
> >> > +@@ -190,6 +201,199 @@ unpredictable as possible; @pxref{Unpred
> >> > @include genpass.c.texi
> >> > @end smallexample
> >> >
> >> > @@ -472,8 +456,6 @@ index af23dd7847..1b151f2d74 100644
> >> > The next program demonstrates how to verify a passphrase. It
> >> checks a
> >> > hash hardcoded into the program, because looking up real users'
> >> hashed
> >> > passphrases may require special privileges (@pxref{User
> >> Database}).
> >> > -diff --git a/manual/string.texi b/manual/string.texi
> >> > -index 23f516439a..5586b52dee 100644
> >> > --- a/manual/string.texi
> >> > +++ b/manual/string.texi
> >> > @@ -36,8 +36,8 @@ too.
> >> > @@ -487,7 +469,7 @@ index 23f516439a..5586b52dee 100644
> >> > * Encode Binary Data:: Encoding and Decoding of Binary
> >> Data.
> >> > * Argz and Envz Vectors:: Null-separated string vectors.
> >> > @end menu
> >> > -@@ -2426,73 +2426,73 @@ functionality under a different name,
> >> such as @code{explicit_memset},
> >> > +@@ -2426,73 +2426,73 @@ functionality under a different name, su
> >> > systems it may be in @file{strings.h} instead.
> >> > @end deftypefun
> >> >
> >> > @@ -538,10 +520,19 @@ index 23f516439a..5586b52dee 100644
> >> >
> >> > - at node Obfuscating Data
> >> > - at section Obfuscating Data
> >> > -- at cindex Rot13
> >> > + at node Trivial Encryption
> >> > + at section Trivial Encryption
> >> > + at cindex encryption
> >> > ++
> >> > ++
> >> > ++The @code{memfrob} function converts an array of data to
> >> something
> >> > ++unrecognizable and back again. It is not encryption in its
> >> usual sense
> >> > ++since it is easy for someone to convert the encrypted data back
> >> to clear
> >> > ++text. The transformation is analogous to Usenet's ``Rot13''
> >> encryption
> >> > ++method for obscuring offensive jokes from sensitive eyes and
> >> such.
> >> > ++Unlike Rot13, @code{memfrob} works on arbitrary binary data,
> >> not just
> >> > ++text.
> >> > + @cindex Rot13
> >> >
> >> > -The @code{memfrob} function reversibly obfuscates an array of
> >> binary
> >> > -data. This is not true encryption; the obfuscated data still
> >> bears a
> >> > @@ -549,20 +540,12 @@ index 23f516439a..5586b52dee 100644
> >> > -undo the obfuscation. It is analogous to the ``Rot13'' cipher
> >> used on
> >> > -Usenet for obscuring offensive jokes, spoilers for works of
> >> fiction,
> >> > -and so on, but it can be applied to arbitrary binary data.
> >> > -
> >> > +-
> >> > -Programs that need true encryption---a transformation that
> >> completely
> >> > -obscures the original and cannot be reversed without knowledge
> >> of a
> >> > -secret key---should use a dedicated cryptography library, such
> >> as
> >> >
> - at uref{https://urldefense.com/v3/__https://www.gnu.org/software/libgcrypt/,,libgcrypt__;!!A4F2R9G_pg!L0pWJaBdwuz-RV1Owa4-1r5ltn0XoiGm9-1v7fhQt0WSOIZ3tFyWidJsvem-W51g$
> }.
> >> > -+The @code{memfrob} function converts an array of data to
> >> something
> >> > -+unrecognizable and back again. It is not encryption in its
> >> usual sense
> >> > -+since it is easy for someone to convert the encrypted data back
> >> to clear
> >> > -+text. The transformation is analogous to Usenet's ``Rot13''
> >> encryption
> >> > -+method for obscuring offensive jokes from sensitive eyes and
> >> such.
> >> > -+Unlike Rot13, @code{memfrob} works on arbitrary binary data,
> >> not just
> >> > -+text.
> >> > -+ at cindex Rot13
> >> > -
> >> > +-
> >> > -Programs that need to @emph{destroy} data should use
> >> > - at code{explicit_bzero} (@pxref{Erasing Sensitive Data}), or
> >> possibly
> >> > - at code{strfry} (@pxref{Shuffling Bytes}).
> >> > @@ -579,13 +562,14 @@ index 23f516439a..5586b52dee 100644
> >> > -beginning at @var{mem}, in place. Each byte is bitwise xor-ed
> >> with
> >> > -the binary pattern 00101010 (hexadecimal 0x2A). The return
> >> value is
> >> > -always @var{mem}.
> >> > +-
> >> > +- at code{memfrob} a second time on the same data returns it to
> >> > +-its original state.
> >> > + at code{memfrob} transforms (frobnicates) each byte of the data
> >> structure
> >> > +at @var{mem}, which is @var{length} bytes long, by bitwise
> >> exclusive
> >> > +oring it with binary 00101010. It does the transformation in
> >> place and
> >> > +its return value is always @var{mem}.
> >> > -
> >> > -- at code{memfrob} a second time on the same data returns it to
> >> > --its original state.
> >> > ++
> >> > +Note that @code{memfrob} a second time on the same data
> >> structure
> >> > +returns it to its original state.
> >> > +
> >> > @@ -600,8 +584,6 @@ index 23f516439a..5586b52dee 100644
> >> > @end deftypefun
> >> >
> >> > @node Encode Binary Data
> >> > -diff --git a/posix/unistd.h b/posix/unistd.h
> >> > -index 32b8161619..6fac59999f 100644
> >> > --- a/posix/unistd.h
> >> > +++ b/posix/unistd.h
> >> > @@ -107,6 +107,9 @@ __BEGIN_DECLS
> >> > @@ -614,7 +596,7 @@ index 32b8161619..6fac59999f 100644
> >> > /* The enhanced internationalization capabilities according to
> >> XPG4.2
> >> > are present. */
> >> > #define _XOPEN_ENH_I18N 1
> >> > -@@ -1129,17 +1132,25 @@ ssize_t copy_file_range (int __infd,
> >> __off64_t *__pinoff,
> >> > +@@ -1129,17 +1132,25 @@ ssize_t copy_file_range (int __infd, __o
> >> > extern int fdatasync (int __fildes);
> >> > #endif /* Use POSIX199309 */
> >> >
> >> > @@ -643,11 +625,9 @@ index 32b8161619..6fac59999f 100644
> >> > /* Swab pairs bytes in the first N bytes of the area pointed to
> >> by
> >> > FROM and copy the result to TO. The value of TO must not be
> >> in the
> >> > range [FROM - N + 1, FROM - 1]. If N is odd the first byte
> >> in FROM
> >> > -diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
> >> > -index 3aa27a9d25..67e5e66f94 100644
> >> > --- a/stdlib/stdlib.h
> >> > +++ b/stdlib/stdlib.h
> >> > -@@ -962,6 +962,12 @@ extern int getsubopt (char **__restrict
> >> __optionp,
> >> > +@@ -962,6 +962,12 @@ extern int getsubopt (char **__restrict
> >> > #endif
> >> >
> >> >
> >> > @@ -660,11 +640,9 @@ index 3aa27a9d25..67e5e66f94 100644
> >> > /* X/Open pseudo terminal handling. */
> >> >
> >> > #ifdef __USE_XOPEN2KXSI
> >> > -diff --git a/sunrpc/des_crypt.c b/sunrpc/des_crypt.c
> >> > -index 9b4bd2d5dd..a4d8b2936b 100644
> >> > --- a/sunrpc/des_crypt.c
> >> > +++ b/sunrpc/des_crypt.c
> >> > -@@ -86,9 +86,6 @@ common_crypt (char *key, char *buf, register
> >> unsigned len,
> >> > +@@ -86,9 +86,6 @@ common_crypt (char *key, char *buf, regi
> >> > return desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE;
> >> > }
> >> >
> >> > @@ -674,7 +652,7 @@ index 9b4bd2d5dd..a4d8b2936b 100644
> >> > /*
> >> > * CBC mode encryption
> >> > */
> >> > -@@ -105,7 +102,7 @@ cbc_crypt (char *key, char *buf, unsigned
> >> int len, unsigned int mode,
> >> > +@@ -105,7 +102,7 @@ cbc_crypt (char *key, char *buf, unsigne
> >> > COPY8 (dp.des_ivec, ivec);
> >> > return err;
> >> > }
> >> > @@ -683,14 +661,12 @@ index 9b4bd2d5dd..a4d8b2936b 100644
> >> >
> >> > /*
> >> > * ECB mode encryption
> >> > -@@ -118,4 +115,4 @@ ecb_crypt (char *key, char *buf, unsigned
> >> int len, unsigned int mode)
> >> > +@@ -118,4 +115,4 @@ ecb_crypt (char *key, char *buf, unsigne
> >> > dp.des_mode = ECB;
> >> > return common_crypt (key, buf, len, mode, &dp);
> >> > }
> >> > -hidden_nolink (ecb_crypt, libc, GLIBC_2_1)
> >> > +libc_hidden_nolink_sunrpc (ecb_crypt, GLIBC_2_1)
> >> > -diff --git a/sunrpc/des_soft.c b/sunrpc/des_soft.c
> >> > -index a87de96cc7..f884f8f21b 100644
> >> > --- a/sunrpc/des_soft.c
> >> > +++ b/sunrpc/des_soft.c
> >> > @@ -71,4 +71,4 @@ des_setparity (char *p)
> >> > @@ -699,6 +675,3 @@ index a87de96cc7..f884f8f21b 100644
> >> > }
> >> > -hidden_nolink (des_setparity, libc, GLIBC_2_1)
> >> > +libc_hidden_nolink_sunrpc (des_setparity, GLIBC_2_1)
> >> > ---
> >> > -2.25.1
> >> > -
> >> > diff --git a/toolchain/glibc/patches/100-fix_cross_rpcgen.patch
> >> b/toolchain/glibc/patches/100-fix_cross_rpcgen.patch
> >> > index 6ee1e80424..9baed08139 100644
> >> > --- a/toolchain/glibc/patches/100-fix_cross_rpcgen.patch
> >> > +++ b/toolchain/glibc/patches/100-fix_cross_rpcgen.patch
> >> > @@ -33,3 +33,4 @@
> >> > +typedef char *caddr_t;
> >> > # define __daddr_t_defined
> >> > #endif
> >> > +
> >> > diff --git a/toolchain/glibc/patches/300-arc.patch
> >> b/toolchain/glibc/patches/300-arc.patch
> >> > new file mode 100644
> >> > index 0000000000..66f7aeb3ef
> >> > --- /dev/null
> >> > +++ b/toolchain/glibc/patches/300-arc.patch
> >> > @@ -0,0 +1,55 @@
> >> > +--- a/sysdeps/arc/atomic-machine.h
> >> > ++++ b/sysdeps/arc/atomic-machine.h
> >> > +@@ -64,6 +64,10 @@ typedef uintmax_t uatomic_max_t;
> >> > + __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 */
> >> > +--- a/sysdeps/unix/sysv/linux/arc/syscall.S
> >> > ++++ b/sysdeps/unix/sysv/linux/arc/syscall.S
> >> > +@@ -24,8 +24,13 @@ ENTRY (syscall)
> >> > + mov_s r1, r2
> >> > + mov_s r2, r3
> >> > + mov_s r3, r4
> >> > ++#ifdef __ARC700__
> >> > ++ mov r4, r5
> >> > ++ mov r5, r6
> >> > ++#else
> >> > + mov_s r4, r5
> >> > + mov_s r5, r6
> >> > ++#endif
> >> > +
> >> > + ARC_TRAP_INSN
> >> > + brhi r0, -4096, L (call_syscall_err)
> >> > +--- a/sysdeps/unix/sysv/linux/arc/sysdep.h
> >> > ++++ b/sysdeps/unix/sysv/linux/arc/sysdep.h
> >> > +@@ -128,7 +128,11 @@ L (call_syscall_err):
> >> ASM_LINE_SEP \
> >> > + mov r8, __NR_##syscall_name ASM_LINE_SEP \
> >> > + ARC_TRAP_INSN ASM_LINE_SEP
> >> > +
> >> > ++# ifdef __ARC700__
> >> > ++# define ARC_TRAP_INSN trap0
> >> > ++# else
> >> > + # define ARC_TRAP_INSN trap_s 0
> >> > ++# endif
> >> > +
> >> > + #else /* !__ASSEMBLER__ */
> >> > +
> >> > +@@ -139,7 +143,11 @@ extern long int __syscall_error (long in
> >> > + hidden_proto (__syscall_error)
> >> > + # endif
> >> > +
> >> > ++# ifdef __ARC700__
> >> > ++# define ARC_TRAP_INSN "trap0 \n\t"
> >> > ++# else
> >> > + # define ARC_TRAP_INSN "trap_s 0 \n\t"
> >> > ++#endif
> >> > +
> >> > + # undef INTERNAL_SYSCALL_NCS
> >> > + # define INTERNAL_SYSCALL_NCS(number, nr_args, args...) \
> >> > --
> >> > 2.29.2
> >> >
> >> >
> >> > _______________________________________________
> >> > openwrt-devel mailing list
> >> > openwrt-devel at lists.openwrt.org
> >> >
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