From 522e6ee3b45808ea845ec0ac11d5fffcd737baba Mon Sep 17 00:00:00 2001 From: Chung-Lin Tang Date: Sat, 17 Jan 2015 22:29:12 -0800 Subject: Commit nios2 port to master. --- sysdeps/unix/sysv/linux/nios2/bits/atomic.h | 92 +++++++++++++++++++++++++++++ sysdeps/unix/sysv/linux/nios2/bits/mman.h | 42 +++++++++++++ 2 files changed, 134 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/nios2/bits/atomic.h create mode 100644 sysdeps/unix/sysv/linux/nios2/bits/mman.h (limited to 'sysdeps/unix/sysv/linux/nios2/bits') diff --git a/sysdeps/unix/sysv/linux/nios2/bits/atomic.h b/sysdeps/unix/sysv/linux/nios2/bits/atomic.h new file mode 100644 index 0000000000..2329f7463d --- /dev/null +++ b/sysdeps/unix/sysv/linux/nios2/bits/atomic.h @@ -0,0 +1,92 @@ +/* Low-level functions for atomic operations. Nios II version. + Copyright (C) 2012-2015 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 _NIOS2_BITS_ATOMIC_H +#define _NIOS2_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 0 + +#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ + (abort (), (__typeof (*mem)) 0) +#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ + (abort (), (__typeof (*mem)) 0) +#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ + (abort (), (__typeof (*mem)) 0) + +#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_32_acq(mem, newval, oldval) \ + ({ \ + register int r2 asm ("r2"); \ + register int* r4 asm ("r4") = (int*)(mem); \ + register int r5 asm ("r5"); \ + register int r6 asm ("r6") = (int)(newval); \ + int retval, orig_oldval = (int)(oldval); \ + long kernel_cmpxchg = 0x1004; \ + while (1) \ + { \ + r5 = *r4; \ + if (r5 != orig_oldval) \ + { \ + retval = r5; \ + break; \ + } \ + asm volatile ("callr %1\n" \ + : "=r" (r2) \ + : "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \ + : "ra", "memory"); \ + if (!r2) { retval = orig_oldval; break; } \ + } \ + (__typeof (*(mem))) retval; \ + }) + +#define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \ + ({ \ + register int r2 asm ("r2"); \ + register int *r4 asm ("r4") = (int*)(mem); \ + register int r5 asm ("r5") = (int)(oldval); \ + register int r6 asm ("r6") = (int)(newval); \ + long kernel_cmpxchg = 0x1004; \ + asm volatile ("callr %1\n" \ + : "=r" (r2) \ + : "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \ + : "ra", "memory"); \ + r2; \ + }) + +#define atomic_full_barrier() ({ asm volatile ("sync"); }) + +#endif /* _NIOS2_BITS_ATOMIC_H */ diff --git a/sysdeps/unix/sysv/linux/nios2/bits/mman.h b/sysdeps/unix/sysv/linux/nios2/bits/mman.h new file mode 100644 index 0000000000..23e92abd71 --- /dev/null +++ b/sysdeps/unix/sysv/linux/nios2/bits/mman.h @@ -0,0 +1,42 @@ +/* Definitions for POSIX memory map interface. Linux/Nios II version. + + Copyright (C) 1997-2015 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_MMAN_H +# error "Never use directly; include instead." +#endif + +/* The following definitions basically come from the kernel headers. + But the kernel header is not namespace clean. */ + +/* These are Linux-specific. */ +#ifdef __USE_MISC +# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ +# define MAP_DENYWRITE 0x00800 /* ETXTBSY */ +# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ +# define MAP_LOCKED 0x02000 /* Lock the mapping. */ +# define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ +# define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ +# define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ +# define MAP_STACK 0x20000 /* Allocation is for a stack. */ +# define MAP_HUGETLB 0x40000 /* Create huge page mapping. */ +#endif + +/* Include generic Linux declarations. */ +#include -- cgit 1.4.1