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crosstool-ng/packages/glibc/2.32/0002-Add-ARC700-support.patch

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glibc: Add ARC700 support to v2.32 & v2.33 As of today ARCompact (AKA "ARCv1 ISA") processors (mostly those are ARC770) are not officially supported by upstream glibc as it adds quite some burden on release ans support of yet another "architecture" port. But given on ABI and ISA front ARCompact is very close to ARCv2 we may easily retrofit its support off-the-tree, which we do here. Also given amount of changes we need to apply there's a hope it will be easy and straight-forward to apply the same to later versions of glibc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2021-02-13 14:12:46 +00:00
From 6349ae7c3d96c8d00179e290d1ccf8a2d8438cc8 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Sat, 13 Feb 2021 17:08:21 +0300
Subject: [PATCH] Add ARC700 support
glibc does not officially support ARC700 so this adds the missing
pieces. I looked at uClibc-ng and a patch by Synopsis for glibc.
[Alexey] Taken from https://github.com/openwrt/openwrt/commit/33646a51abcf15ff5c5363848287e1ed778b7467
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
---
Run patches thru `manage-packages -P` This refreshes the line numbers, removes any fuzz (which would make any future forward ports easier) and standardizes the patch/file headers (which makes them easier to read). Signed-off-by: Alexey Neyman <stilor@att.net>
2022-02-11 02:00:59 +00:00
sysdeps/arc/atomic-machine.h | 4 ++++
sysdeps/unix/sysv/linux/arc/syscall.S | 5 +++++
sysdeps/unix/sysv/linux/arc/sysdep.h | 8 ++++++++
glibc: Add ARC700 support to v2.32 & v2.33 As of today ARCompact (AKA "ARCv1 ISA") processors (mostly those are ARC770) are not officially supported by upstream glibc as it adds quite some burden on release ans support of yet another "architecture" port. But given on ABI and ISA front ARCompact is very close to ARCv2 we may easily retrofit its support off-the-tree, which we do here. Also given amount of changes we need to apply there's a hope it will be easy and straight-forward to apply the same to later versions of glibc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2021-02-13 14:12:46 +00:00
3 files changed, 17 insertions(+)
--- a/sysdeps/arc/atomic-machine.h
+++ b/sysdeps/arc/atomic-machine.h
Run patches thru `manage-packages -P` This refreshes the line numbers, removes any fuzz (which would make any future forward ports easier) and standardizes the patch/file headers (which makes them easier to read). Signed-off-by: Alexey Neyman <stilor@att.net>
2022-02-11 02:00:59 +00:00
@@ -64,6 +64,10 @@
glibc: Add ARC700 support to v2.32 & v2.33 As of today ARCompact (AKA "ARCv1 ISA") processors (mostly those are ARC770) are not officially supported by upstream glibc as it adds quite some burden on release ans support of yet another "architecture" port. But given on ABI and ISA front ARCompact is very close to ARCv2 we may easily retrofit its support off-the-tree, which we do here. Also given amount of changes we need to apply there's a hope it will be easy and straight-forward to apply the same to later versions of glibc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2021-02-13 14:12:46 +00:00
__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
Run patches thru `manage-packages -P` This refreshes the line numbers, removes any fuzz (which would make any future forward ports easier) and standardizes the patch/file headers (which makes them easier to read). Signed-off-by: Alexey Neyman <stilor@att.net>
2022-02-11 02:00:59 +00:00
@@ -24,8 +24,13 @@
glibc: Add ARC700 support to v2.32 & v2.33 As of today ARCompact (AKA "ARCv1 ISA") processors (mostly those are ARC770) are not officially supported by upstream glibc as it adds quite some burden on release ans support of yet another "architecture" port. But given on ABI and ISA front ARCompact is very close to ARCv2 we may easily retrofit its support off-the-tree, which we do here. Also given amount of changes we need to apply there's a hope it will be easy and straight-forward to apply the same to later versions of glibc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2021-02-13 14:12:46 +00:00
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
Run patches thru `manage-packages -P` This refreshes the line numbers, removes any fuzz (which would make any future forward ports easier) and standardizes the patch/file headers (which makes them easier to read). Signed-off-by: Alexey Neyman <stilor@att.net>
2022-02-11 02:00:59 +00:00
@@ -128,7 +128,11 @@
glibc: Add ARC700 support to v2.32 & v2.33 As of today ARCompact (AKA "ARCv1 ISA") processors (mostly those are ARC770) are not officially supported by upstream glibc as it adds quite some burden on release ans support of yet another "architecture" port. But given on ABI and ISA front ARCompact is very close to ARCv2 we may easily retrofit its support off-the-tree, which we do here. Also given amount of changes we need to apply there's a hope it will be easy and straight-forward to apply the same to later versions of glibc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2021-02-13 14:12:46 +00:00
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__ */
Run patches thru `manage-packages -P` This refreshes the line numbers, removes any fuzz (which would make any future forward ports easier) and standardizes the patch/file headers (which makes them easier to read). Signed-off-by: Alexey Neyman <stilor@att.net>
2022-02-11 02:00:59 +00:00
@@ -139,7 +143,11 @@
glibc: Add ARC700 support to v2.32 & v2.33 As of today ARCompact (AKA "ARCv1 ISA") processors (mostly those are ARC770) are not officially supported by upstream glibc as it adds quite some burden on release ans support of yet another "architecture" port. But given on ABI and ISA front ARCompact is very close to ARCv2 we may easily retrofit its support off-the-tree, which we do here. Also given amount of changes we need to apply there's a hope it will be easy and straight-forward to apply the same to later versions of glibc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2021-02-13 14:12:46 +00:00
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...) \
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