LCOV - code coverage report
Current view: top level - zephyr/arch/common - sys_bitops.h Coverage Total Hit
Test: new.info Lines: 15.4 % 13 2
Test Date: 2025-09-05 16:43:28

            Line data    Source code
       1            0 : /*
       2              :  * Copyright (c) 2020, Wind River Systems, Inc.
       3              :  * Copyright (c) 2017, Oticon A/S
       4              :  * Copyright (c) 2020, Synopsys
       5              :  *
       6              :  * SPDX-License-Identifier: Apache-2.0
       7              :  */
       8              : 
       9              : /* Memory bits manipulation functions in non-arch-specific C code */
      10              : 
      11              : #ifndef ZEPHYR_INCLUDE_ARCH_COMMON_SYS_BITOPS_H_
      12              : #define ZEPHYR_INCLUDE_ARCH_COMMON_SYS_BITOPS_H_
      13              : 
      14              : #ifndef _ASMLANGUAGE
      15              : 
      16              : #include <zephyr/toolchain.h>
      17              : #include <zephyr/types.h>
      18              : #include <zephyr/sys/sys_io.h>
      19              : 
      20              : #ifdef __cplusplus
      21              : extern "C" {
      22              : #endif
      23              : 
      24            0 : static ALWAYS_INLINE void sys_set_bit(mem_addr_t addr, unsigned int bit)
      25              : {
      26              :         uint32_t temp = *(volatile uint32_t *)addr;
      27              : 
      28              :         *(volatile uint32_t *)addr = temp | (1U << bit);
      29              : }
      30              : 
      31            0 : static ALWAYS_INLINE void sys_clear_bit(mem_addr_t addr, unsigned int bit)
      32              : {
      33              :         uint32_t temp = *(volatile uint32_t *)addr;
      34              : 
      35              :         *(volatile uint32_t *)addr = temp & ~(1U << bit);
      36              : }
      37              : 
      38            0 : static ALWAYS_INLINE int sys_test_bit(mem_addr_t addr, unsigned int bit)
      39              : {
      40              :         uint32_t temp = *(volatile uint32_t *)addr;
      41              : 
      42              :         return temp & (1U << bit);
      43              : }
      44              : 
      45            1 : static ALWAYS_INLINE void sys_set_bits(mem_addr_t addr, unsigned int mask)
      46              : {
      47              :         uint32_t temp = *(volatile uint32_t *)addr;
      48              : 
      49              :         *(volatile uint32_t *)addr = temp | mask;
      50              : }
      51              : 
      52            1 : static ALWAYS_INLINE void sys_clear_bits(mem_addr_t addr, unsigned int mask)
      53              : {
      54              :         uint32_t temp = *(volatile uint32_t *)addr;
      55              : 
      56              :         *(volatile uint32_t *)addr = temp & ~mask;
      57              : }
      58              : 
      59              : static ALWAYS_INLINE
      60            0 :         void sys_bitfield_set_bit(mem_addr_t addr, unsigned int bit)
      61              : {
      62              :         /* Doing memory offsets in terms of 32-bit values to prevent
      63              :          * alignment issues
      64              :          */
      65              :         sys_set_bit(addr + ((bit >> 5) << 2), bit & 0x1F);
      66              : }
      67              : 
      68              : static ALWAYS_INLINE
      69            0 :         void sys_bitfield_clear_bit(mem_addr_t addr, unsigned int bit)
      70              : {
      71              :         sys_clear_bit(addr + ((bit >> 5) << 2), bit & 0x1F);
      72              : }
      73              : 
      74              : static ALWAYS_INLINE
      75            0 :         int sys_bitfield_test_bit(mem_addr_t addr, unsigned int bit)
      76              : {
      77              :         return sys_test_bit(addr + ((bit >> 5) << 2), bit & 0x1F);
      78              : }
      79              : 
      80              : static ALWAYS_INLINE
      81            0 :         int sys_test_and_set_bit(mem_addr_t addr, unsigned int bit)
      82              : {
      83              :         int ret;
      84              : 
      85              :         ret = sys_test_bit(addr, bit);
      86              :         sys_set_bit(addr, bit);
      87              : 
      88              :         return ret;
      89              : }
      90              : 
      91              : static ALWAYS_INLINE
      92            0 :         int sys_test_and_clear_bit(mem_addr_t addr, unsigned int bit)
      93              : {
      94              :         int ret;
      95              : 
      96              :         ret = sys_test_bit(addr, bit);
      97              :         sys_clear_bit(addr, bit);
      98              : 
      99              :         return ret;
     100              : }
     101              : 
     102              : static ALWAYS_INLINE
     103            0 :         int sys_bitfield_test_and_set_bit(mem_addr_t addr, unsigned int bit)
     104              : {
     105              :         int ret;
     106              : 
     107              :         ret = sys_bitfield_test_bit(addr, bit);
     108              :         sys_bitfield_set_bit(addr, bit);
     109              : 
     110              :         return ret;
     111              : }
     112              : 
     113              : static ALWAYS_INLINE
     114            0 :         int sys_bitfield_test_and_clear_bit(mem_addr_t addr, unsigned int bit)
     115              : {
     116              :         int ret;
     117              : 
     118              :         ret = sys_bitfield_test_bit(addr, bit);
     119              :         sys_bitfield_clear_bit(addr, bit);
     120              : 
     121              :         return ret;
     122              : }
     123              : 
     124              : #ifdef __cplusplus
     125              : }
     126              : #endif
     127              : 
     128              : #endif /* _ASMLANGUAGE */
     129              : 
     130              : #endif /* ZEPHYR_INCLUDE_ARCH_COMMON_SYS_BITOPS_H_ */
        

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