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/*
* Copyright (c) 2018 Agustina Arzille.
* Copyright (c) 2018 Richard Braun.
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* Architecture-specific code may override any of the type-specific
* functions by defining a macro of the same name.
*/
#ifndef KERN_LATOMIC_I_H
#define KERN_LATOMIC_I_H
#include <stdbool.h>
#include <stdint.h>
#include <kern/atomic_types.h>
#include <kern/macros.h>
#include <machine/cpu.h>
#include <machine/latomic.h>
#define LATOMIC_ALIGN(ptr) MIN(sizeof(*(ptr)), sizeof(ptr))
#define latomic_ptr_aligned(ptr) P2ALIGNED((uintptr_t)(ptr), LATOMIC_ALIGN(ptr))
/* See atomic_select */
#define latomic_select(ptr, op) \
_Generic(*(ptr), \
float: latomic_invalid_type, \
double: latomic_invalid_type, \
long double: latomic_invalid_type, \
bool: latomic_invalid_type, \
char: latomic_invalid_type, \
signed char: latomic_invalid_type, \
unsigned char: latomic_invalid_type, \
short: latomic_invalid_type, \
unsigned short: latomic_invalid_type, \
int: latomic_ ## op ## _32, \
unsigned int: latomic_ ## op ## _32, \
long: latomic_ ## op ## _ul, \
unsigned long: latomic_ ## op ## _ul, \
long long: latomic_ ## op ## _64, \
unsigned long long: latomic_ ## op ## _64, \
default: latomic_ ## op ## _ptr)
void latomic_invalid_type(void);
#define latomic_swap_n(ptr, val) \
MACRO_BEGIN \
unsigned long flags_; \
typeof(val) ret_; \
\
cpu_intr_save(&flags_); \
ret_ = *(ptr); \
*(ptr) = (val); \
cpu_intr_restore(flags_); \
\
ret_; \
MACRO_END
#define latomic_cas_n(ptr, oval, nval) \
MACRO_BEGIN \
unsigned long flags_; \
typeof(oval) ret_; \
\
cpu_intr_save(&flags_); \
\
ret_ = *(ptr); \
\
if (ret_ == (oval)) { \
*(ptr) = (nval); \
} \
\
cpu_intr_restore(flags_); \
\
ret_; \
MACRO_END
#define latomic_fetch_op_n(ptr, val, op) \
MACRO_BEGIN \
unsigned long flags_; \
typeof(val) ret_; \
\
cpu_intr_save(&flags_); \
ret_ = *(ptr); \
*(ptr) = ret_ op (val); \
cpu_intr_restore(flags_); \
\
ret_; \
MACRO_END
#define latomic_fetch_add_n(ptr, val) latomic_fetch_op_n(ptr, val, +)
#define latomic_fetch_sub_n(ptr, val) latomic_fetch_op_n(ptr, val, -)
#define latomic_fetch_and_n(ptr, val) latomic_fetch_op_n(ptr, val, &)
#define latomic_fetch_or_n(ptr, val) latomic_fetch_op_n(ptr, val, |)
#define latomic_fetch_xor_n(ptr, val) latomic_fetch_op_n(ptr, val, ^)
/* latomic_load */
#ifndef latomic_load_32
static inline unsigned int
latomic_load_32(union atomic_constptr_32 ptr, int memorder)
{
return __atomic_load_n(ptr.ui_ptr, memorder);
}
#endif /* latomic_load_32 */
#ifndef latomic_load_64
#ifdef __LP64__
static inline unsigned long long
latomic_load_64(union atomic_constptr_64 ptr, int memorder)
{
return __atomic_load_n(ptr.ull_ptr, memorder);
}
#else /* __LP64__ */
static inline unsigned long long
latomic_load_64(union atomic_constptr_64 ptr, int memorder)
{
unsigned long long ret;
unsigned long flags;
(void)memorder;
cpu_intr_save(&flags);
ret = *ptr.ull_ptr;
cpu_intr_restore(flags);
return ret;
}
#endif /* __LP64__ */
#endif /* latomic_load_64 */
#ifdef __LP64__
#define latomic_load_ul latomic_load_64
#else /* __LP64__ */
#define latomic_load_ul latomic_load_32
#endif /* __LP64__ */
#define latomic_load_ptr latomic_load_ul
/* latomic_store */
#ifndef latomic_store_32
static inline void
latomic_store_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
__atomic_store_n(ptr.ui_ptr, val.ui, memorder);
}
#endif /* latomic_store_32 */
#ifndef latomic_store_64
#ifdef __LP64__
static inline void
latomic_store_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
return __atomic_store_n(ptr.ull_ptr, val.ull, memorder);
}
#else /* __LP64__ */
static inline void
latomic_store_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
unsigned long flags;
(void)memorder;
cpu_intr_save(&flags);
*ptr.ull_ptr = val.ull;
cpu_intr_restore(flags);
}
#endif /* __LP64__ */
#endif /* latomic_store_64 */
#ifdef __LP64__
#define latomic_store_ul latomic_store_64
#else /* __LP64__ */
#define latomic_store_ul latomic_store_32
#endif /* __LP64__ */
#define latomic_store_ptr latomic_store_ul
/* latomic_swap */
#ifndef latomic_swap_32
static inline unsigned int
latomic_swap_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
return latomic_swap_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_swap_32 */
#ifndef latomic_swap_64
static inline unsigned long long
latomic_swap_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
return latomic_swap_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_swap_64 */
#ifdef __LP64__
#define latomic_swap_ul latomic_swap_64
#else /* __LP64__ */
#define latomic_swap_ul latomic_swap_32
#endif /* __LP64__ */
#define latomic_swap_ptr latomic_swap_ul
/* latomic_cas */
#ifndef latomic_cas_32
static inline unsigned int
latomic_cas_32(union atomic_ptr_32 ptr, union atomic_val_32 oval,
union atomic_val_32 nval, int memorder)
{
(void)memorder;
return latomic_cas_n(ptr.ui_ptr, oval.ui, nval.ui);
}
#endif /* latomic_cas_32 */
#ifndef latomic_cas_64
static inline unsigned long long
latomic_cas_64(union atomic_ptr_64 ptr, union atomic_val_64 oval,
union atomic_val_64 nval, int memorder)
{
(void)memorder;
return latomic_cas_n(ptr.ull_ptr, oval.ull, nval.ull);
}
#endif /* latomic_cas_64 */
#ifdef __LP64__
#define latomic_cas_ul latomic_cas_64
#else /* __LP64__ */
#define latomic_cas_ul latomic_cas_32
#endif /* __LP64__ */
#define latomic_cas_ptr latomic_cas_ul
/* latomic_fetch_add */
#ifndef latomic_fetch_add_32
static inline unsigned int
latomic_fetch_add_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
return latomic_fetch_add_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_fetch_add_32 */
#ifndef latomic_fetch_add_64
static inline unsigned long long
latomic_fetch_add_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
return latomic_fetch_add_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_fetch_add_64 */
#ifdef __LP64__
#define latomic_fetch_add_ul latomic_fetch_add_64
#else /* __LP64__ */
#define latomic_fetch_add_ul latomic_fetch_add_32
#endif /* __LP64__ */
#define latomic_fetch_add_ptr latomic_fetch_add_ul
/* latomic_fetch_sub */
#ifndef latomic_fetch_sub_32
static inline unsigned int
latomic_fetch_sub_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
return latomic_fetch_sub_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_fetch_sub_32 */
#ifndef latomic_fetch_sub_64
static inline unsigned long long
latomic_fetch_sub_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
return latomic_fetch_sub_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_fetch_sub_64 */
#ifdef __LP64__
#define latomic_fetch_sub_ul latomic_fetch_sub_64
#else /* __LP64__ */
#define latomic_fetch_sub_ul latomic_fetch_sub_32
#endif /* __LP64__ */
#define latomic_fetch_sub_ptr latomic_fetch_sub_ul
/* latomic_fetch_and */
#ifndef latomic_fetch_and_32
static inline unsigned int
latomic_fetch_and_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
return latomic_fetch_and_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_fetch_and_32 */
#ifndef latomic_fetch_and_64
static inline unsigned long long
latomic_fetch_and_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
return latomic_fetch_and_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_fetch_and_64 */
#ifdef __LP64__
#define latomic_fetch_and_ul latomic_fetch_and_64
#else /* __LP64__ */
#define latomic_fetch_and_ul latomic_fetch_and_32
#endif /* __LP64__ */
#define latomic_fetch_and_ptr latomic_fetch_and_ul
/* latomic_fetch_or */
#ifndef latomic_fetch_or_32
static inline unsigned int
latomic_fetch_or_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
return latomic_fetch_or_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_fetch_or_32 */
#ifndef latomic_fetch_or_64
static inline unsigned long long
latomic_fetch_or_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
return latomic_fetch_or_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_fetch_or_64 */
#ifdef __LP64__
#define latomic_fetch_or_ul latomic_fetch_or_64
#else /* __LP64__ */
#define latomic_fetch_or_ul latomic_fetch_or_32
#endif /* __LP64__ */
#define latomic_fetch_or_ptr latomic_fetch_or_ul
/* latomic_fetch_xor */
#ifndef latomic_fetch_xor_32
static inline unsigned int
latomic_fetch_xor_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
return latomic_fetch_xor_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_fetch_xor_32 */
#ifndef latomic_fetch_xor_64
static inline unsigned long long
latomic_fetch_xor_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
return latomic_fetch_xor_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_fetch_xor_64 */
#ifdef __LP64__
#define latomic_fetch_xor_ul latomic_fetch_xor_64
#else /* __LP64__ */
#define latomic_fetch_xor_ul latomic_fetch_xor_32
#endif /* __LP64__ */
#define latomic_fetch_xor_ptr latomic_fetch_xor_ul
/* latomic_add */
#ifndef latomic_add_32
static inline void
latomic_add_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
latomic_fetch_add_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_add_32 */
#ifndef latomic_add_64
static inline void
latomic_add_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
latomic_fetch_add_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_add_64 */
#ifdef __LP64__
#define latomic_add_ul latomic_add_64
#else /* __LP64__ */
#define latomic_add_ul latomic_add_32
#endif /* __LP64__ */
#define latomic_add_ptr latomic_add_ul
/* latomic_sub */
#ifndef latomic_sub_32
static inline void
latomic_sub_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
latomic_fetch_sub_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_sub_32 */
#ifndef latomic_sub_64
static inline void
latomic_sub_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
latomic_fetch_sub_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_sub_64 */
#ifdef __LP64__
#define latomic_sub_ul latomic_sub_64
#else /* __LP64__ */
#define latomic_sub_ul latomic_sub_32
#endif /* __LP64__ */
#define latomic_sub_ptr latomic_sub_ul
/* latomic_and */
#ifndef latomic_and_32
static inline void
latomic_and_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
latomic_fetch_and_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_and_32 */
#ifndef latomic_and_64
static inline void
latomic_and_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
latomic_fetch_and_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_and_64 */
#ifdef __LP64__
#define latomic_and_ul latomic_and_64
#else /* __LP64__ */
#define latomic_and_ul latomic_and_32
#endif /* __LP64__ */
#define latomic_and_ptr latomic_and_ul
/* latomic_or */
#ifndef latomic_or_32
static inline void
latomic_or_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
latomic_fetch_or_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_or_32 */
#ifndef latomic_or_64
static inline void
latomic_or_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
latomic_fetch_or_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_or_64 */
#ifdef __LP64__
#define latomic_or_ul latomic_or_64
#else /* __LP64__ */
#define latomic_or_ul latomic_or_32
#endif /* __LP64__ */
#define latomic_or_ptr latomic_or_ul
/* latomic_xor */
#ifndef latomic_xor_32
static inline void
latomic_xor_32(union atomic_ptr_32 ptr, union atomic_val_32 val,
int memorder)
{
(void)memorder;
latomic_fetch_xor_n(ptr.ui_ptr, val.ui);
}
#endif /* latomic_xor_32 */
#ifndef latomic_xor_64
static inline void
latomic_xor_64(union atomic_ptr_64 ptr, union atomic_val_64 val,
int memorder)
{
(void)memorder;
latomic_fetch_xor_n(ptr.ull_ptr, val.ull);
}
#endif /* latomic_xor_64 */
#ifdef __LP64__
#define latomic_xor_ul latomic_xor_64
#else /* __LP64__ */
#define latomic_xor_ul latomic_xor_32
#endif /* __LP64__ */
#define latomic_xor_ptr latomic_xor_ul
#endif /* KERN_LATOMIC_I_H */
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