File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/arch/tile/include/uapi/asm/Kbuild b/arch/tile/include/uapi/asm/Kbuild
new file mode 100644
index 0000000..c20db8e
--- /dev/null
+++ b/arch/tile/include/uapi/asm/Kbuild
@@ -0,0 +1,21 @@
+# UAPI Header export list
+include include/uapi/asm-generic/Kbuild.asm
+
+header-y += auxvec.h
+header-y += bitsperlong.h
+header-y += byteorder.h
+header-y += cachectl.h
+header-y += hardwall.h
+header-y += kvm_para.h
+header-y += mman.h
+header-y += ptrace.h
+header-y += setup.h
+header-y += sigcontext.h
+header-y += siginfo.h
+header-y += signal.h
+header-y += stat.h
+header-y += swab.h
+header-y += ucontext.h
+header-y += unistd.h
+
+generic-y += ucontext.h
diff --git a/arch/tile/include/uapi/asm/auxvec.h b/arch/tile/include/uapi/asm/auxvec.h
new file mode 100644
index 0000000..f497123
--- /dev/null
+++ b/arch/tile/include/uapi/asm/auxvec.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_AUXVEC_H
+#define _ASM_TILE_AUXVEC_H
+
+/* The vDSO location. */
+#define AT_SYSINFO_EHDR 33
+
+#define AT_VECTOR_SIZE_ARCH 1 /* entries in ARCH_DLINFO */
+
+#endif /* _ASM_TILE_AUXVEC_H */
diff --git a/arch/tile/include/uapi/asm/bitsperlong.h b/arch/tile/include/uapi/asm/bitsperlong.h
new file mode 100644
index 0000000..58c771f
--- /dev/null
+++ b/arch/tile/include/uapi/asm/bitsperlong.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_BITSPERLONG_H
+#define _ASM_TILE_BITSPERLONG_H
+
+#ifdef __LP64__
+# define __BITS_PER_LONG 64
+#else
+# define __BITS_PER_LONG 32
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _ASM_TILE_BITSPERLONG_H */
diff --git a/arch/tile/include/uapi/asm/byteorder.h b/arch/tile/include/uapi/asm/byteorder.h
new file mode 100644
index 0000000..6b8fa2e
--- /dev/null
+++ b/arch/tile/include/uapi/asm/byteorder.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2011 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#if defined (__BIG_ENDIAN__)
+#include <linux/byteorder/big_endian.h>
+#else
+#include <linux/byteorder/little_endian.h>
+#endif
diff --git a/arch/tile/include/uapi/asm/cachectl.h b/arch/tile/include/uapi/asm/cachectl.h
new file mode 100644
index 0000000..572ddca
--- /dev/null
+++ b/arch/tile/include/uapi/asm/cachectl.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2011 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_CACHECTL_H
+#define _ASM_TILE_CACHECTL_H
+
+/*
+ * Options for cacheflush system call.
+ *
+ * The ICACHE flush is performed on all cores currently running the
+ * current process's address space. The intent is for user
+ * applications to be able to modify code, invoke the system call,
+ * then allow arbitrary other threads in the same address space to see
+ * the newly-modified code. Passing a length of CHIP_L1I_CACHE_SIZE()
+ * or more invalidates the entire icache on all cores in the address
+ * spaces. (Note: currently this option invalidates the entire icache
+ * regardless of the requested address and length, but we may choose
+ * to honor the arguments at some point.)
+ *
+ * Flush and invalidation of memory can normally be performed with the
+ * __insn_flush() and __insn_finv() instructions from userspace.
+ * The DCACHE option to the system call allows userspace
+ * to flush the entire L1+L2 data cache from the core. In this case,
+ * the address and length arguments are not used. The DCACHE flush is
+ * restricted to the current core, not all cores in the address space.
+ */
+#define ICACHE (1<<0) /* invalidate L1 instruction cache */
+#define DCACHE (1<<1) /* flush and invalidate data cache */
+#define BCACHE (ICACHE|DCACHE) /* flush both caches */
+
+#endif /* _ASM_TILE_CACHECTL_H */
diff --git a/arch/tile/include/uapi/asm/hardwall.h b/arch/tile/include/uapi/asm/hardwall.h
new file mode 100644
index 0000000..c2169d4
--- /dev/null
+++ b/arch/tile/include/uapi/asm/hardwall.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ *
+ * Provide methods for access control of per-cpu resources like
+ * UDN, IDN, or IPI.
+ */
+
+#ifndef _UAPI_ASM_TILE_HARDWALL_H
+#define _UAPI_ASM_TILE_HARDWALL_H
+
+#include <arch/chip.h>
+#include <linux/ioctl.h>
+
+#define HARDWALL_IOCTL_BASE 0xa2
+
+/*
+ * The HARDWALL_CREATE() ioctl is a macro with a "size" argument.
+ * The resulting ioctl value is passed to the kernel in conjunction
+ * with a pointer to a standard kernel bitmask of cpus.
+ * For network resources (UDN or IDN) the bitmask must physically
+ * represent a rectangular configuration on the chip.
+ * The "size" is the number of bytes of cpu mask data.
+ */
+#define _HARDWALL_CREATE 1
+#define HARDWALL_CREATE(size) \
+ _IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size))
+
+#define _HARDWALL_ACTIVATE 2
+#define HARDWALL_ACTIVATE \
+ _IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE)
+
+#define _HARDWALL_DEACTIVATE 3
+#define HARDWALL_DEACTIVATE \
+ _IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE)
+
+#define _HARDWALL_GET_ID 4
+#define HARDWALL_GET_ID \
+ _IO(HARDWALL_IOCTL_BASE, _HARDWALL_GET_ID)
+
+
+#endif /* _UAPI_ASM_TILE_HARDWALL_H */
diff --git a/arch/tile/include/uapi/asm/kvm_para.h b/arch/tile/include/uapi/asm/kvm_para.h
new file mode 100644
index 0000000..14fab8f
--- /dev/null
+++ b/arch/tile/include/uapi/asm/kvm_para.h
@@ -0,0 +1 @@
+#include <asm-generic/kvm_para.h>
diff --git a/arch/tile/include/uapi/asm/mman.h b/arch/tile/include/uapi/asm/mman.h
new file mode 100644
index 0000000..63ee13f
--- /dev/null
+++ b/arch/tile/include/uapi/asm/mman.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_MMAN_H
+#define _ASM_TILE_MMAN_H
+
+#include <asm-generic/mman-common.h>
+#include <arch/chip.h>
+
+/* Standard Linux flags */
+
+#define MAP_POPULATE 0x0040 /* populate (prefault) pagetables */
+#define MAP_NONBLOCK 0x0080 /* do not block on IO */
+#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
+#define MAP_STACK MAP_GROWSDOWN /* provide convenience alias */
+#define MAP_LOCKED 0x0200 /* pages are locked */
+#define MAP_NORESERVE 0x0400 /* don't check for reservations */
+#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
+#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
+#define MAP_HUGETLB 0x4000 /* create a huge page mapping */
+
+
+/*
+ * Flags for mlockall
+ */
+#define MCL_CURRENT 1 /* lock all current mappings */
+#define MCL_FUTURE 2 /* lock all future mappings */
+#define MCL_ONFAULT 4 /* lock all pages that are faulted in */
+
+
+#endif /* _ASM_TILE_MMAN_H */
diff --git a/arch/tile/include/uapi/asm/ptrace.h b/arch/tile/include/uapi/asm/ptrace.h
new file mode 100644
index 0000000..d03b829
--- /dev/null
+++ b/arch/tile/include/uapi/asm/ptrace.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _UAPI_ASM_TILE_PTRACE_H
+#define _UAPI_ASM_TILE_PTRACE_H
+
+#include <arch/chip.h>
+#include <arch/abi.h>
+
+/* These must match struct pt_regs, below. */
+#if CHIP_WORD_SIZE() == 32
+#define PTREGS_OFFSET_REG(n) ((n)*4)
+#else
+#define PTREGS_OFFSET_REG(n) ((n)*8)
+#endif
+#define PTREGS_OFFSET_BASE 0
+#define PTREGS_OFFSET_TP PTREGS_OFFSET_REG(53)
+#define PTREGS_OFFSET_SP PTREGS_OFFSET_REG(54)
+#define PTREGS_OFFSET_LR PTREGS_OFFSET_REG(55)
+#define PTREGS_NR_GPRS 56
+#define PTREGS_OFFSET_PC PTREGS_OFFSET_REG(56)
+#define PTREGS_OFFSET_EX1 PTREGS_OFFSET_REG(57)
+#define PTREGS_OFFSET_FAULTNUM PTREGS_OFFSET_REG(58)
+#define PTREGS_OFFSET_ORIG_R0 PTREGS_OFFSET_REG(59)
+#define PTREGS_OFFSET_FLAGS PTREGS_OFFSET_REG(60)
+#if CHIP_HAS_CMPEXCH()
+#define PTREGS_OFFSET_CMPEXCH PTREGS_OFFSET_REG(61)
+#endif
+#define PTREGS_SIZE PTREGS_OFFSET_REG(64)
+
+
+#ifndef __ASSEMBLY__
+
+#ifndef __KERNEL__
+/* Provide appropriate length type to userspace regardless of -m32/-m64. */
+typedef uint_reg_t pt_reg_t;
+#endif
+
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call or exception. "struct sigcontext" has the same shape.
+ */
+struct pt_regs {
+ union {
+ /* Saved main processor registers; 56..63 are special. */
+ pt_reg_t regs[56];
+ struct {
+ pt_reg_t __regs[53];
+ pt_reg_t tp; /* aliases regs[TREG_TP] */
+ pt_reg_t sp; /* aliases regs[TREG_SP] */
+ pt_reg_t lr; /* aliases regs[TREG_LR] */
+ };
+ };
+
+ /* Saved special registers. */
+ pt_reg_t pc; /* stored in EX_CONTEXT_K_0 */
+ pt_reg_t ex1; /* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
+ pt_reg_t faultnum; /* fault number (INT_SWINT_1 for syscall) */
+ pt_reg_t orig_r0; /* r0 at syscall entry, else zero */
+ pt_reg_t flags; /* flags (see below) */
+#if !CHIP_HAS_CMPEXCH()
+ pt_reg_t pad[3];
+#else
+ pt_reg_t cmpexch; /* value of CMPEXCH_VALUE SPR at interrupt */
+ pt_reg_t pad[2];
+#endif
+};
+
+#endif /* __ASSEMBLY__ */
+
+#define PTRACE_GETREGS 12
+#define PTRACE_SETREGS 13
+#define PTRACE_GETFPREGS 14
+#define PTRACE_SETFPREGS 15
+
+/* Support TILE-specific ptrace options, with events starting at 16. */
+#define PTRACE_EVENT_MIGRATE 16
+#define PTRACE_O_TRACEMIGRATE (1 << PTRACE_EVENT_MIGRATE)
+
+/*
+ * Flag bits in pt_regs.flags that are part of the ptrace API.
+ * We start our numbering higher up to avoid confusion with the
+ * non-ABI kernel-internal values that use the low 16 bits.
+ */
+#define PT_FLAGS_COMPAT 0x10000 /* process is an -m32 compat process */
+
+#endif /* _UAPI_ASM_TILE_PTRACE_H */
diff --git a/arch/tile/include/uapi/asm/setup.h b/arch/tile/include/uapi/asm/setup.h
new file mode 100644
index 0000000..e6f7da2
--- /dev/null
+++ b/arch/tile/include/uapi/asm/setup.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _UAPI_ASM_TILE_SETUP_H
+#define _UAPI_ASM_TILE_SETUP_H
+
+#define COMMAND_LINE_SIZE 2048
+
+
+#endif /* _UAPI_ASM_TILE_SETUP_H */
diff --git a/arch/tile/include/uapi/asm/sigcontext.h b/arch/tile/include/uapi/asm/sigcontext.h
new file mode 100644
index 0000000..39ff5d1
--- /dev/null
+++ b/arch/tile/include/uapi/asm/sigcontext.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_SIGCONTEXT_H
+#define _ASM_TILE_SIGCONTEXT_H
+
+/* Don't pollute the namespace since <signal.h> includes this file. */
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+/*
+ * struct sigcontext has the same shape as struct pt_regs,
+ * but is simplified since we know the fault is from userspace.
+ */
+struct sigcontext {
+ __extension__ union {
+ /* General-purpose registers. */
+ __uint_reg_t gregs[56];
+ __extension__ struct {
+ __uint_reg_t __gregs[53];
+ __uint_reg_t tp; /* Aliases gregs[TREG_TP]. */
+ __uint_reg_t sp; /* Aliases gregs[TREG_SP]. */
+ __uint_reg_t lr; /* Aliases gregs[TREG_LR]. */
+ };
+ };
+ __uint_reg_t pc; /* Program counter. */
+ __uint_reg_t ics; /* In Interrupt Critical Section? */
+ __uint_reg_t faultnum; /* Fault number. */
+ __uint_reg_t pad[5];
+};
+
+#endif /* _ASM_TILE_SIGCONTEXT_H */
diff --git a/arch/tile/include/uapi/asm/siginfo.h b/arch/tile/include/uapi/asm/siginfo.h
new file mode 100644
index 0000000..56d661b
--- /dev/null
+++ b/arch/tile/include/uapi/asm/siginfo.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_SIGINFO_H
+#define _ASM_TILE_SIGINFO_H
+
+#define __ARCH_SI_TRAPNO
+
+#ifdef __LP64__
+# define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
+#endif
+
+#include <asm-generic/siginfo.h>
+
+/*
+ * Additional Tile-specific SIGILL si_codes
+ */
+#define ILL_DBLFLT (__SI_FAULT|9) /* double fault */
+#define ILL_HARDWALL (__SI_FAULT|10) /* user networks hardwall violation */
+#undef NSIGILL
+#define NSIGILL 10
+
+#endif /* _ASM_TILE_SIGINFO_H */
diff --git a/arch/tile/include/uapi/asm/signal.h b/arch/tile/include/uapi/asm/signal.h
new file mode 100644
index 0000000..ef0d32d
--- /dev/null
+++ b/arch/tile/include/uapi/asm/signal.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _UAPI_ASM_TILE_SIGNAL_H
+#define _UAPI_ASM_TILE_SIGNAL_H
+
+/* Do not notify a ptracer when this signal is handled. */
+#define SA_NOPTRACE 0x02000000u
+
+/* Used in earlier Tilera releases, so keeping for binary compatibility. */
+#define SA_RESTORER 0x04000000u
+
+#include <asm-generic/signal.h>
+
+
+#endif /* _UAPI_ASM_TILE_SIGNAL_H */
diff --git a/arch/tile/include/uapi/asm/stat.h b/arch/tile/include/uapi/asm/stat.h
new file mode 100644
index 0000000..c0db34d
--- /dev/null
+++ b/arch/tile/include/uapi/asm/stat.h
@@ -0,0 +1,4 @@
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
+#define __ARCH_WANT_STAT64 /* Used for compat_sys_stat64() etc. */
+#endif
+#include <asm-generic/stat.h>
diff --git a/arch/tile/include/uapi/asm/swab.h b/arch/tile/include/uapi/asm/swab.h
new file mode 100644
index 0000000..7c37b38
--- /dev/null
+++ b/arch/tile/include/uapi/asm/swab.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_SWAB_H
+#define _ASM_TILE_SWAB_H
+
+/* Tile gcc is always >= 4.3.0, so we use __builtin_bswap. */
+#define __arch_swab32(x) __builtin_bswap32(x)
+#define __arch_swab64(x) __builtin_bswap64(x)
+#define __arch_swab16(x) (__builtin_bswap32(x) >> 16)
+
+#endif /* _ASM_TILE_SWAB_H */
diff --git a/arch/tile/include/uapi/asm/unistd.h b/arch/tile/include/uapi/asm/unistd.h
new file mode 100644
index 0000000..3866397
--- /dev/null
+++ b/arch/tile/include/uapi/asm/unistd.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program 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, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#if !defined(__LP64__) || defined(__SYSCALL_COMPAT)
+/* Use the flavor of this syscall that matches the 32-bit API better. */
+#define __ARCH_WANT_SYNC_FILE_RANGE2
+#endif
+
+/* Use the standard ABI for syscalls. */
+#include <asm-generic/unistd.h>
+
+#define NR_syscalls __NR_syscalls
+
+/* Additional Tilera-specific syscalls. */
+#define __NR_cacheflush (__NR_arch_specific_syscall + 1)
+__SYSCALL(__NR_cacheflush, sys_cacheflush)
+
+#ifndef __tilegx__
+/* "Fast" syscalls provide atomic support for 32-bit chips. */
+#define __NR_FAST_cmpxchg -1
+#define __NR_FAST_atomic_update -2
+#define __NR_FAST_cmpxchg64 -3
+#define __NR_cmpxchg_badaddr (__NR_arch_specific_syscall + 0)
+__SYSCALL(__NR_cmpxchg_badaddr, sys_cmpxchg_badaddr)
+#endif