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libc/arch_atomic: add gcc legacy __sync buitins support.

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Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
This commit is contained in:
wangbowen6 2022-04-27 15:18:54 +08:00 committed by Xiang Xiao
parent 19c5ac9135
commit ea164f28b8
1 changed files with 325 additions and 0 deletions
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325
libs/libc/machine/arch_atomic.c
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@ -182,6 +182,131 @@
return ret; \
}
#define SYNC_ADD_FETCH(n, type) \
\
type __sync_add_and_fetch_ ## n (volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
*tmp = *tmp + value; \
\
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
#define SYNC_SUB_FETCH(n, type) \
\
type __sync_sub_and_fetch_ ## n (volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
*tmp = *tmp - value; \
\
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
#define SYNC_OR_FETCH(n, type) \
\
type __sync_or_and_fetch_ ## n (volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
*tmp = *tmp | value; \
\
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
#define SYNC_AND_FETCH(n, type) \
\
type __sync_and_and_fetch_ ## n (volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
*tmp = *tmp & value; \
\
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
#define SYNC_XOR_FETCH(n, type) \
\
type __sync_xor_and_fetch_ ## n (volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
*tmp = *tmp ^ value; \
\
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
#define SYNC_NAND_FETCH(n, type) \
\
type __sync_nand_and_fetch_ ## n (volatile void *ptr, \
type value) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
*tmp = ~(*tmp & value); \
\
spin_unlock_irqrestore(NULL, irqstate); \
return *tmp; \
}
#define SYNC_BOOL_CMP_SWAP(n, type) \
\
bool __sync_bool_compare_and_swap_ ## n ( \
volatile void *ptr, \
type oldvalue, \
type newvalue) \
{ \
bool ret = false; \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
\
if (*tmp == oldvalue) \
{ \
ret = true; \
*tmp = newvalue; \
} \
\
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
#define SYNC_VAL_CMP_SWAP(n, type) \
\
type __sync_val_compare_and_swap_ ## n ( \
volatile void *ptr, \
type oldvalue, \
type newvalue) \
{ \
irqstate_t irqstate = spin_lock_irqsave(NULL); \
type *tmp = (type *)ptr; \
type ret = *tmp; \
\
if (*tmp == oldvalue) \
{ \
*tmp = newvalue; \
} \
\
spin_unlock_irqrestore(NULL, irqstate); \
return ret; \
}
/****************************************************************************
* Public Functions
****************************************************************************/
@ -401,3 +526,203 @@ FETCH_XOR(4, uint32_t)
****************************************************************************/
FETCH_XOR(8, uint64_t)
/* Clang define the __sync builtins, add #ifndef to avoid
* redefined/redeclared problem.
*/
#ifndef __clang__
/****************************************************************************
* Name: __sync_add_and_fetch_1
****************************************************************************/
SYNC_ADD_FETCH(1, uint8_t)
/****************************************************************************
* Name: __sync_add_and_fetch_2
****************************************************************************/
SYNC_ADD_FETCH(2, uint16_t)
/****************************************************************************
* Name: __sync_add_and_fetch_4
****************************************************************************/
SYNC_ADD_FETCH(4, uint32_t)
/****************************************************************************
* Name: __sync_add_and_fetch_8
****************************************************************************/
SYNC_ADD_FETCH(8, uint64_t)
/****************************************************************************
* Name: __sync_sub_and_fetch_1
****************************************************************************/
SYNC_SUB_FETCH(1, uint8_t)
/****************************************************************************
* Name: __sync_sub_and_fetch_2
****************************************************************************/
SYNC_SUB_FETCH(2, uint16_t)
/****************************************************************************
* Name: __sync_sub_and_fetch_4
****************************************************************************/
SYNC_SUB_FETCH(4, uint32_t)
/****************************************************************************
* Name: __sync_sub_and_fetch_8
****************************************************************************/
SYNC_SUB_FETCH(8, uint64_t)
/****************************************************************************
* Name: __sync_or_and_fetch_1
****************************************************************************/
SYNC_OR_FETCH(1, uint8_t)
/****************************************************************************
* Name: __sync_or_and_fetch_2
****************************************************************************/
SYNC_OR_FETCH(2, uint16_t)
/****************************************************************************
* Name: __sync_or_and_fetch_4
****************************************************************************/
SYNC_OR_FETCH(4, uint32_t)
/****************************************************************************
* Name: __sync_or_and_fetch_8
****************************************************************************/
SYNC_OR_FETCH(8, uint64_t)
/****************************************************************************
* Name: __sync_and_and_fetch_1
****************************************************************************/
SYNC_AND_FETCH(1, uint8_t)
/****************************************************************************
* Name: __sync_and_and_fetch_2
****************************************************************************/
SYNC_AND_FETCH(2, uint16_t)
/****************************************************************************
* Name: __sync_and_and_fetch_4
****************************************************************************/
SYNC_AND_FETCH(4, uint32_t)
/****************************************************************************
* Name: __sync_and_and_fetch_8
****************************************************************************/
SYNC_AND_FETCH(8, uint64_t)
/****************************************************************************
* Name: __sync_xor_and_fetch_1
****************************************************************************/
SYNC_XOR_FETCH(1, uint8_t)
/****************************************************************************
* Name: __sync_xor_and_fetch_2
****************************************************************************/
SYNC_XOR_FETCH(2, uint16_t)
/****************************************************************************
* Name: __sync_xor_and_fetch_4
****************************************************************************/
SYNC_XOR_FETCH(4, uint32_t)
/****************************************************************************
* Name: __sync_xor_and_fetch_8
****************************************************************************/
SYNC_XOR_FETCH(8, uint64_t)
/****************************************************************************
* Name: __sync_nand_and_fetch_1
****************************************************************************/
SYNC_NAND_FETCH(1, uint8_t)
/****************************************************************************
* Name: __sync_nand_and_fetch_2
****************************************************************************/
SYNC_NAND_FETCH(2, uint16_t)
/****************************************************************************
* Name: __sync_nand_and_fetch_4
****************************************************************************/
SYNC_NAND_FETCH(4, uint32_t)
/****************************************************************************
* Name: __sync_nand_and_fetch_8
****************************************************************************/
SYNC_NAND_FETCH(8, uint64_t)
/****************************************************************************
* Name: __sync_bool_compare_and_swap_1
****************************************************************************/
SYNC_BOOL_CMP_SWAP(1, uint8_t)
/****************************************************************************
* Name: __sync_bool_compare_and_swap_2
****************************************************************************/
SYNC_BOOL_CMP_SWAP(2, uint16_t)
/****************************************************************************
* Name: __sync_bool_compare_and_swap_4
****************************************************************************/
SYNC_BOOL_CMP_SWAP(4, uint32_t)
/****************************************************************************
* Name: __sync_bool_compare_and_swap_8
****************************************************************************/
SYNC_BOOL_CMP_SWAP(8, uint64_t)
/****************************************************************************
* Name: __sync_val_compare_and_swap_1
****************************************************************************/
SYNC_VAL_CMP_SWAP(1, uint8_t)
/****************************************************************************
* Name: __sync_val_compare_and_swap_2
****************************************************************************/
SYNC_VAL_CMP_SWAP(2, uint16_t)
/****************************************************************************
* Name: __sync_val_compare_and_swap_4
****************************************************************************/
SYNC_VAL_CMP_SWAP(4, uint32_t)
/****************************************************************************
* Name: __sync_val_compare_and_swap_8
****************************************************************************/
SYNC_VAL_CMP_SWAP(8, uint64_t)
#endif /* __clang__ */