diff options
| author | Vincent Ren-Wei Chen <vincentc@andestech.com> | 2017-01-17 07:31:24 +0100 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-01-22 10:06:29 +0100 |
| commit | 6af3332a4cbd1ffbc81f74759ef7c5e1a87d2e10 (patch) | |
| tree | 4deae5f23fd1e2664f21c09dfb57fda799dffd10 /libc/sysdeps/linux/nds32/bits/atomic.h | |
| parent | 82af21a60bc6e53dd92c1c140f20179d2ae4ad40 (diff) | |
nds32: add NPTL/TLS, *context function, libm changes and code cleanup
This commit includes following features.
1. Support NPTL/TLS
2. Add libm function which is used to handle FP rounding and excpetions
(ex: fclrexcpt,fedisblxcpti,feenablxcpt... )
3. Add *context function for operating user context
(ex: setcontext,getcontext,makecontext... )
4. Change the return flow from signal handler
5. Cleanup of old code
The testsuite only has 2 errors, tst-cpuclock1 and tst-cputimer1,
which are related to timing accuracy. (math and locale tests are disabled)
Signed-off-by: Vincent Ren-Wei Chen <vincentc@andestech.com>
Diffstat (limited to 'libc/sysdeps/linux/nds32/bits/atomic.h')
| -rw-r--r-- | libc/sysdeps/linux/nds32/bits/atomic.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/nds32/bits/atomic.h b/libc/sysdeps/linux/nds32/bits/atomic.h new file mode 100644 index 000000000..f93fa7a43 --- /dev/null +++ b/libc/sysdeps/linux/nds32/bits/atomic.h @@ -0,0 +1,110 @@ +/* + * Copyright (C) 2016-2017 Andes Technology, Inc. + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#ifndef _NDS32_BITS_ATOMIC_H +#define _NDS32_BITS_ATOMIC_H + +#include <stdint.h> + +typedef int8_t atomic8_t; +typedef uint8_t uatomic8_t; +typedef int_fast8_t atomic_fast8_t; +typedef uint_fast8_t uatomic_fast8_t; + +typedef int16_t atomic16_t; +typedef uint16_t uatomic16_t; +typedef int_fast16_t atomic_fast16_t; +typedef uint_fast16_t uatomic_fast16_t; + +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 int64_t atomic64_t; +typedef uint64_t uatomic64_t; +typedef int_fast64_t atomic_fast64_t; +typedef uint_fast64_t uatomic_fast64_t; + +typedef intptr_t atomicptr_t; +typedef uintptr_t uatomicptr_t; +typedef intmax_t atomic_max_t; +typedef uintmax_t uatomic_max_t; + + +#ifndef atomic_full_barrier +# define atomic_full_barrier() __asm__ ("dsb" ::: "memory") +#endif + +#ifndef atomic_read_barrier +# define atomic_read_barrier() atomic_full_barrier () +#endif + +#ifndef atomic_write_barrier +# define atomic_write_barrier() atomic_full_barrier () +#endif + +#define atomic_exchange_acq(mem, newval) \ + ({ unsigned long val, offset, temp; \ + \ + __asm__ volatile ( \ + "move %2, %4\n\t" \ + "move %1, #0x0\n\t" \ + "1:\n\t" \ + "llw %0, [%3 + %1 << 0]\n\t" \ + "move %2, %4\n\t" \ + "scw %2, [%3 + %1 << 0]\n\t" \ + "beqz %2, 1b\n\t" \ + : "=&r" (val), "=&r" (offset), "=&r" (temp) \ + : "r" (mem), "r" (newval) \ + : "memory" ); \ + val; }) + +#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ + ({ unsigned long val, offset, temp; \ + \ + __asm__ volatile ( \ + "move %1, #0x0\n\t" \ + "move %2, %4\n\t" \ + "1:\n\t" \ + "llw %0, [%3 + %1 << 0]\n\t" \ + "bne %0, %5, 2f\n\t" \ + "move %2, %4\n\t" \ + "scw %2, [%3 + %1 << 0]\n\t" \ + "beqz %2, 1b\n\t" \ + "j 3f\n\t" \ + "2:\n\t" \ + "move %2, %0\n\t" \ + "scw %2, [%3 + %1 << 0]\n\t" \ + "3:\n\t" \ + : "=&r" (val), "=&r" (offset), "=&r" (temp) \ + : "r" (mem), "r" (newval), "r" (oldval) \ + : "memory" ); \ + val; }) + +#define atomic_compare_and_exchange_bool_acq(mem, newval, oldval) \ + ({ unsigned long val, offset, temp; \ + \ + __asm__ volatile ( \ + "move %1, #0x0\n\t" \ + "move %2, %4\n\t" \ + "1:\n\t" \ + "llw %0, [%3 + %1 << 0]\n\t" \ + "bne %5, %0, 2f\n\t" \ + "move %2, %4\n\t" \ + "scw %2, [%3 + %1 << 0]\n\t" \ + "beqz %2, 1b\n\t" \ + "addi %0, %1, #0\n\t" \ + "j 3f\n\t" \ + "2:\n\t" \ + "scw %0, [%3 + %1 << 0]\n\t" \ + "addi %0, %1, #0x1\n\t" \ + "3:\n\t" \ + : "=&r" (val), "=&r" (offset), "=&r" (temp) \ + : "r" (mem), "r" (newval), "r" (oldval) \ + : "memory" ); \ + val; }) + +#endif |