diff options
Diffstat (limited to 'arch/tile/include')
22 files changed, 242 insertions, 146 deletions
diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild index ea2e8ea3eb61..5d01ab8f73e5 100644 --- a/arch/tile/include/asm/Kbuild +++ b/arch/tile/include/asm/Kbuild @@ -1,10 +1,7 @@ -include include/asm-generic/Kbuild.asm header-y += ../arch/ -header-y += cachectl.h header-y += ucontext.h -header-y += hardwall.h generic-y += bug.h generic-y += bugs.h diff --git a/arch/tile/include/asm/hardwall.h b/arch/tile/include/asm/hardwall.h index 47514a58d685..2f572b6b7bc2 100644 --- a/arch/tile/include/asm/hardwall.h +++ b/arch/tile/include/asm/hardwall.h @@ -14,40 +14,11 @@ * Provide methods for access control of per-cpu resources like * UDN, IDN, or IPI. */ - #ifndef _ASM_TILE_HARDWALL_H #define _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) +#include <uapi/asm/hardwall.h> -#ifdef __KERNEL__ /* /proc hooks for hardwall. */ struct proc_dir_entry; #ifdef CONFIG_HARDWALL @@ -56,6 +27,4 @@ int proc_pid_hardwall(struct task_struct *task, char *buffer); #else static inline void proc_tile_hardwall_init(struct proc_dir_entry *root) {} #endif -#endif - #endif /* _ASM_TILE_HARDWALL_H */ diff --git a/arch/tile/include/asm/ptrace.h b/arch/tile/include/asm/ptrace.h index c6cddd7e8d51..1a4fd9ab0ee1 100644 --- a/arch/tile/include/asm/ptrace.h +++ b/arch/tile/include/asm/ptrace.h @@ -11,87 +11,21 @@ * NON INFRINGEMENT. See the GNU General Public License for * more details. */ - #ifndef _ASM_TILE_PTRACE_H #define _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) +#include <linux/compiler.h> #ifndef __ASSEMBLY__ - -#ifdef __KERNEL__ /* Benefit from consistent use of "long" on all chips. */ typedef unsigned long pt_reg_t; -#else -/* 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 { - /* Saved main processor registers; 56..63 are special. */ - /* tp, sp, and lr must immediately follow regs[] for aliasing. */ - 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 +#include <uapi/asm/ptrace.h> -/* Support TILE-specific ptrace options, with events starting at 16. */ -#define PTRACE_O_TRACEMIGRATE 0x00010000 -#define PTRACE_EVENT_MIGRATE 16 -#ifdef __KERNEL__ #define PTRACE_O_MASK_TILE (PTRACE_O_TRACEMIGRATE) #define PT_TRACE_MIGRATE 0x00080000 #define PT_TRACE_MASK_TILE (PT_TRACE_MIGRATE) -#endif - -#ifdef __KERNEL__ /* Flag bits in pt_regs.flags */ #define PT_FLAGS_DISABLE_IRQ 1 /* on return to kernel, disable irqs */ @@ -159,6 +93,4 @@ extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, #define SINGLESTEP_STATE_TARGET_LB 2 #define SINGLESTEP_STATE_TARGET_UB 7 -#endif /* !__KERNEL__ */ - #endif /* _ASM_TILE_PTRACE_H */ diff --git a/arch/tile/include/asm/setup.h b/arch/tile/include/asm/setup.h index c67eb70ea78e..d048888c5d9a 100644 --- a/arch/tile/include/asm/setup.h +++ b/arch/tile/include/asm/setup.h @@ -11,16 +11,13 @@ * NON INFRINGEMENT. See the GNU General Public License for * more details. */ - #ifndef _ASM_TILE_SETUP_H #define _ASM_TILE_SETUP_H -#define COMMAND_LINE_SIZE 2048 - -#ifdef __KERNEL__ #include <linux/pfn.h> #include <linux/init.h> +#include <uapi/asm/setup.h> /* * Reserved space for vmalloc and iomap - defined in asm/page.h @@ -53,6 +50,4 @@ int hardwall_ipi_valid(int cpu); } while (0) #endif -#endif /* __KERNEL__ */ - #endif /* _ASM_TILE_SETUP_H */ diff --git a/arch/tile/include/asm/signal.h b/arch/tile/include/asm/signal.h index 1e5e49aad548..10e183de96d3 100644 --- a/arch/tile/include/asm/signal.h +++ b/arch/tile/include/asm/signal.h @@ -11,19 +11,11 @@ * NON INFRINGEMENT. See the GNU General Public License for * more details. */ - #ifndef _ASM_TILE_SIGNAL_H #define _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> +#include <uapi/asm/signal.h> -#if defined(__KERNEL__) #if !defined(__ASSEMBLY__) struct pt_regs; int restore_sigcontext(struct pt_regs *, struct sigcontext __user *); @@ -34,6 +26,4 @@ void signal_fault(const char *type, struct pt_regs *, void trace_unhandled_signal(const char *type, struct pt_regs *regs, unsigned long address, int signo); #endif -#endif - #endif /* _ASM_TILE_SIGNAL_H */ diff --git a/arch/tile/include/asm/unistd.h b/arch/tile/include/asm/unistd.h index 0e1f3e66e492..6e032a0a268e 100644 --- a/arch/tile/include/asm/unistd.h +++ b/arch/tile/include/asm/unistd.h @@ -11,32 +11,9 @@ * 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> - -/* 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 - -#ifdef __KERNEL__ /* In compat mode, we use sys_llseek() for compat_sys_llseek(). */ #ifdef CONFIG_COMPAT #define __ARCH_WANT_SYS_LLSEEK #endif #define __ARCH_WANT_SYS_NEWFSTATAT -#endif +#include <uapi/asm/unistd.h> diff --git a/arch/tile/include/uapi/asm/Kbuild b/arch/tile/include/uapi/asm/Kbuild index baebb3da1d44..5c6915fd30b5 100644 --- a/arch/tile/include/uapi/asm/Kbuild +++ b/arch/tile/include/uapi/asm/Kbuild @@ -1,3 +1,18 @@ # 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 += unistd.h diff --git a/arch/tile/include/asm/auxvec.h b/arch/tile/include/uapi/asm/auxvec.h index 1d393edb0641..1d393edb0641 100644 --- a/arch/tile/include/asm/auxvec.h +++ b/arch/tile/include/uapi/asm/auxvec.h diff --git a/arch/tile/include/asm/bitsperlong.h b/arch/tile/include/uapi/asm/bitsperlong.h index 58c771f2af2f..58c771f2af2f 100644 --- a/arch/tile/include/asm/bitsperlong.h +++ b/arch/tile/include/uapi/asm/bitsperlong.h diff --git a/arch/tile/include/asm/byteorder.h b/arch/tile/include/uapi/asm/byteorder.h index fb72ecf49218..fb72ecf49218 100644 --- a/arch/tile/include/asm/byteorder.h +++ b/arch/tile/include/uapi/asm/byteorder.h diff --git a/arch/tile/include/asm/cachectl.h b/arch/tile/include/uapi/asm/cachectl.h index af4c9f9154d1..af4c9f9154d1 100644 --- a/arch/tile/include/asm/cachectl.h +++ b/arch/tile/include/uapi/asm/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 000000000000..c2169d4f4010 --- /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/asm/kvm_para.h b/arch/tile/include/uapi/asm/kvm_para.h index 14fab8f0b957..14fab8f0b957 100644 --- a/arch/tile/include/asm/kvm_para.h +++ b/arch/tile/include/uapi/asm/kvm_para.h diff --git a/arch/tile/include/asm/mman.h b/arch/tile/include/uapi/asm/mman.h index 81b8fc348d63..81b8fc348d63 100644 --- a/arch/tile/include/asm/mman.h +++ b/arch/tile/include/uapi/asm/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 000000000000..c717d0fec72e --- /dev/null +++ b/arch/tile/include/uapi/asm/ptrace.h @@ -0,0 +1,88 @@ +/* + * 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 { + /* Saved main processor registers; 56..63 are special. */ + /* tp, sp, and lr must immediately follow regs[] for aliasing. */ + 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_O_TRACEMIGRATE 0x00010000 +#define PTRACE_EVENT_MIGRATE 16 + + +#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 000000000000..e6f7da265ac3 --- /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/asm/sigcontext.h b/arch/tile/include/uapi/asm/sigcontext.h index 6348e59d3724..6348e59d3724 100644 --- a/arch/tile/include/asm/sigcontext.h +++ b/arch/tile/include/uapi/asm/sigcontext.h diff --git a/arch/tile/include/asm/siginfo.h b/arch/tile/include/uapi/asm/siginfo.h index 56d661bb010b..56d661bb010b 100644 --- a/arch/tile/include/asm/siginfo.h +++ b/arch/tile/include/uapi/asm/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 000000000000..ef0d32d84a4c --- /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/asm/stat.h b/arch/tile/include/uapi/asm/stat.h index c0db34d56be3..c0db34d56be3 100644 --- a/arch/tile/include/asm/stat.h +++ b/arch/tile/include/uapi/asm/stat.h diff --git a/arch/tile/include/asm/swab.h b/arch/tile/include/uapi/asm/swab.h index 7c37b38f6c8d..7c37b38f6c8d 100644 --- a/arch/tile/include/asm/swab.h +++ b/arch/tile/include/uapi/asm/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 000000000000..cd7b6dd9d471 --- /dev/null +++ b/arch/tile/include/uapi/asm/unistd.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. + */ + +#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> + +/* 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 |