diff options
Diffstat (limited to 'include/import/atomic-ops.h')
| -rw-r--r-- | include/import/atomic-ops.h | 1991 |
1 files changed, 1991 insertions, 0 deletions
diff --git a/include/import/atomic-ops.h b/include/import/atomic-ops.h new file mode 100644 index 0000000..29674db --- /dev/null +++ b/include/import/atomic-ops.h @@ -0,0 +1,1991 @@ +/* generic atomic operations used by progressive locks + * + * Copyright (C) 2012-2022 Willy Tarreau <w@1wt.eu> + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef PL_ATOMIC_OPS_H +#define PL_ATOMIC_OPS_H + +/* The definitions below exist in two forms: + * - fallback form (_pl_*) + * - preferred form (pl_*) + * + * As a general rule, given that C11 atomics tend to offer more flexibility to + * the compiler, these should set the preferred form, and the arch-specific + * code should set the fallback code. But it's possible for arch-specific code + * to set a preferred form, in which case it will simply be used over the other + * ones. + */ + +/* + * Architecture-specific versions of the various operations + */ + +/* + * ###### ix86 / x86_64 below ###### + */ +#if defined(__i386__) || defined (__i486__) || defined (__i586__) || defined (__i686__) || defined (__x86_64__) + +/* for compilers supporting condition flags on output, let's directly return them */ +#if defined(__GCC_ASM_FLAG_OUTPUTS__) +#define X86_COND_C_TO_REG(reg) "" +#define X86_COND_Z_TO_REG(reg) "" +#define X86_COND_NZ_TO_REG(reg) "" +#define X86_COND_C_RESULT(var) "=@ccc"(var) +#define X86_COND_Z_RESULT(var) "=@ccz"(var) +#define X86_COND_NZ_RESULT(var) "=@ccnz"(var) +#else +#define X86_COND_C_TO_REG(reg) "sbb %" #reg ", %" #reg "\n\t" +#define X86_COND_Z_TO_REG(reg) "sete %" #reg "\n\t" +#define X86_COND_NZ_TO_REG(reg) "setne %" #reg "\n\t" +#define X86_COND_C_RESULT(var) "=r"(var) +#define X86_COND_Z_RESULT(var) "=qm"(var) +#define X86_COND_NZ_RESULT(var) "=qm"(var) +#endif + +/* CPU relaxation while waiting (PAUSE instruction on x86) */ +#define pl_cpu_relax() do { \ + asm volatile("rep;nop\n"); \ + } while (0) + +/* full memory barrier using mfence when SSE2 is supported, falling back to + * "lock add %esp" (gcc uses "lock add" or "lock or"). + */ +#if defined(__SSE2__) + +#define _pl_mb() do { \ + asm volatile("mfence" ::: "memory"); \ + } while (0) + +#elif defined(__x86_64__) + +#define _pl_mb() do { \ + asm volatile("lock addl $0,0 (%%rsp)" ::: "memory", "cc"); \ + } while (0) + +#else /* ix86 */ + +#define _pl_mb() do { \ + asm volatile("lock addl $0,0 (%%esp)" ::: "memory", "cc"); \ + } while (0) + +#endif /* end of pl_mb() case for sse2/x86_64/x86 */ + +/* load/store barriers are nops on x86 */ +#define _pl_mb_load() do { asm volatile("" ::: "memory"); } while (0) +#define _pl_mb_store() do { asm volatile("" ::: "memory"); } while (0) + +/* atomic full/load/store are also nops on x86 */ +#define _pl_mb_ato() do { asm volatile("" ::: "memory"); } while (0) +#define _pl_mb_ato_load() do { asm volatile("" ::: "memory"); } while (0) +#define _pl_mb_ato_store() do { asm volatile("" ::: "memory"); } while (0) + +/* atomic load: on x86 it's just a volatile read */ +#define _pl_load_lax(ptr) _pl_load(ptr) +#define _pl_load(ptr) ({ typeof(*(ptr)) __ptr = *(volatile typeof(ptr))ptr; __ptr; }) + +/* atomic store: on x86 it's just a volatile write */ +#define _pl_store_lax(ptr) _pl_store(ptr) +#define _pl_store(ptr, x) do { *((volatile typeof(ptr))(ptr)) = (typeof(*ptr))(x); } while (0) + +/* increment integer value pointed to by pointer <ptr>, and return non-zero if + * result is non-null. + */ +#define _pl_inc_lax(ptr) _pl_inc(ptr) +#define _pl_inc_acq(ptr) _pl_inc(ptr) +#define _pl_inc_rel(ptr) _pl_inc(ptr) +#define _pl_inc(ptr) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned char ret; \ + asm volatile("lock incq %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned char ret; \ + asm volatile("lock incl %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned char ret; \ + asm volatile("lock incw %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret; \ + asm volatile("lock incb %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_inc__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_inc__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* decrement integer value pointed to by pointer <ptr>, and return non-zero if + * result is non-null. + */ +#define _pl_dec_lax(ptr) _pl_dec(ptr) +#define _pl_dec_acq(ptr) _pl_dec(ptr) +#define _pl_dec_rel(ptr) _pl_dec(ptr) +#define _pl_dec(ptr) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned char ret; \ + asm volatile("lock decq %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned char ret; \ + asm volatile("lock decl %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned char ret; \ + asm volatile("lock decw %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret; \ + asm volatile("lock decb %0\n" \ + X86_COND_NZ_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_NZ_RESULT(ret) \ + : \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_dec__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_dec__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* increment integer value pointed to by pointer <ptr>, no return */ +#define pl_inc_noret_lax(ptr) pl_inc_noret(ptr) +#define pl_inc_noret_acq(ptr) pl_inc_noret(ptr) +#define pl_inc_noret_rel(ptr) pl_inc_noret(ptr) +#define pl_inc_noret(ptr) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock incq %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock incl %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock incw %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock incb %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_inc_noret__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_inc_noret__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* decrement integer value pointed to by pointer <ptr>, no return */ +#define pl_dec_noret_lax(ptr) pl_dec_noret(ptr) +#define pl_dec_noret_acq(ptr) pl_dec_noret(ptr) +#define pl_dec_noret_rel(ptr) pl_dec_noret(ptr) +#define pl_dec_noret(ptr) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock decq %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock decl %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock decw %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock decb %0\n" \ + : "+m" (*(ptr)) \ + : \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_dec_noret__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_dec_noret__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* add integer constant <x> to integer value pointed to by pointer <ptr>, + * no return. Size of <x> is not checked. + */ +#define _pl_add_noret_lax(ptr, x) _pl_add_noret(ptr, x) +#define _pl_add_noret_acq(ptr, x) _pl_add_noret(ptr, x) +#define _pl_add_noret_rel(ptr, x) _pl_add_noret(ptr, x) +#define _pl_add_noret(ptr, x) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock addq %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned long)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock addl %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned int)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock addw %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned short)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock addb %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned char)(x)) \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_add__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_add__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* subtract integer constant <x> from integer value pointed to by pointer + * <ptr>, no return. Size of <x> is not checked. + */ +#define _pl_sub_noret_lax(ptr, x) _pl_sub_noret(ptr, x) +#define _pl_sub_noret_acq(ptr, x) _pl_sub_noret(ptr, x) +#define _pl_sub_noret_rel(ptr, x) _pl_sub_noret(ptr, x) +#define _pl_sub_noret(ptr, x) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock subq %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned long)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock subl %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned int)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock subw %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned short)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock subb %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned char)(x)) \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_sub__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_sub__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* binary and integer value pointed to by pointer <ptr> with constant <x>, no + * return. Size of <x> is not checked. + */ +#define _pl_and_noret_lax(ptr, x) _pl_and_noret(ptr, x) +#define _pl_and_noret_acq(ptr, x) _pl_and_noret(ptr, x) +#define _pl_and_noret_rel(ptr, x) _pl_and_noret(ptr, x) +#define _pl_and_noret(ptr, x) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock andq %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned long)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock andl %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned int)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock andw %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned short)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock andb %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned char)(x)) \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_and__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_and__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* binary or integer value pointed to by pointer <ptr> with constant <x>, no + * return. Size of <x> is not checked. + */ +#define _pl_or_noret_lax(ptr, x) _pl_or_noret(ptr, x) +#define _pl_or_noret_acq(ptr, x) _pl_or_noret(ptr, x) +#define _pl_or_noret_rel(ptr, x) _pl_or_noret(ptr, x) +#define _pl_or_noret(ptr, x) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock orq %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned long)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock orl %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned int)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock orw %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned short)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock orb %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned char)(x)) \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_or__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_or__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* binary xor integer value pointed to by pointer <ptr> with constant <x>, no + * return. Size of <x> is not checked. + */ +#define _pl_xor_noret_lax(ptr, x) _pl_xor_noret(ptr, x) +#define _pl_xor_noret_acq(ptr, x) _pl_xor_noret(ptr, x) +#define _pl_xor_noret_rel(ptr, x) _pl_xor_noret(ptr, x) +#define _pl_xor_noret(ptr, x) do { \ + if (sizeof(long) == 8 && sizeof(*(ptr)) == 8) { \ + asm volatile("lock xorq %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned long)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 4) { \ + asm volatile("lock xorl %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned int)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 2) { \ + asm volatile("lock xorw %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned short)(x)) \ + : "cc"); \ + } else if (sizeof(*(ptr)) == 1) { \ + asm volatile("lock xorb %1, %0\n" \ + : "+m" (*(ptr)) \ + : "er" ((unsigned char)(x)) \ + : "cc"); \ + } else { \ + void __unsupported_argument_size_for_pl_xor__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_xor__(__FILE__,__LINE__); \ + } \ +} while (0) + +/* test and reset bit <bit> in integer value pointed to by pointer <ptr>. Returns + * 0 if the bit was not set, or ~0 of the same type as *ptr if it was set. Note + * that there is no 8-bit equivalent operation. + */ +#define pl_btr_lax(ptr, bit) pl_btr(ptr, bit) +#define pl_btr_acq(ptr, bit) pl_btr(ptr, bit) +#define pl_btr_rel(ptr, bit) pl_btr(ptr, bit) +#define pl_btr(ptr, bit) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret; \ + asm volatile("lock btrq %2, %0\n\t" \ + X86_COND_C_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_C_RESULT(ret) \ + : "Ir" ((unsigned long)(bit)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret; \ + asm volatile("lock btrl %2, %0\n\t" \ + X86_COND_C_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_C_RESULT(ret) \ + : "Ir" ((unsigned int)(bit)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret; \ + asm volatile("lock btrw %2, %0\n\t" \ + X86_COND_C_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_C_RESULT(ret) \ + : "Ir" ((unsigned short)(bit)) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_btr__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_btr__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* test and set bit <bit> in integer value pointed to by pointer <ptr>. Returns + * 0 if the bit was not set, or ~0 of the same type as *ptr if it was set. Note + * that there is no 8-bit equivalent operation. + */ +#define pl_bts_lax(ptr, bit) pl_bts(ptr, bit) +#define pl_bts_acq(ptr, bit) pl_bts(ptr, bit) +#define pl_bts_rel(ptr, bit) pl_bts(ptr, bit) +#define pl_bts(ptr, bit) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret; \ + asm volatile("lock btsq %2, %0\n\t" \ + X86_COND_C_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_C_RESULT(ret) \ + : "Ir" ((unsigned long)(bit)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret; \ + asm volatile("lock btsl %2, %0\n\t" \ + X86_COND_C_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_C_RESULT(ret) \ + : "Ir" ((unsigned int)(bit)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret; \ + asm volatile("lock btsw %2, %0\n\t" \ + X86_COND_C_TO_REG(1) \ + : "+m" (*(ptr)), X86_COND_C_RESULT(ret) \ + : "Ir" ((unsigned short)(bit)) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_bts__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_bts__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* Note: for an unclear reason, gcc's __sync_fetch_and_add() implementation + * produces less optimal than hand-crafted asm code so let's implement here the + * operations we need for the most common archs. + */ + +/* fetch-and-add: fetch integer value pointed to by pointer <ptr>, add <x> to + * to <*ptr> and return the previous value. + * => THIS IS LEGACY, USE _pl_ldadd() INSTEAD. + */ +#define _pl_xadd(ptr, x) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret = (unsigned long)(x); \ + asm volatile("lock xaddq %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret = (unsigned int)(x); \ + asm volatile("lock xaddl %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret = (unsigned short)(x); \ + asm volatile("lock xaddw %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret = (unsigned char)(x); \ + asm volatile("lock xaddb %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_xadd__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_xadd__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* fetch-and-add: fetch integer value pointed to by pointer <ptr>, add <x> to + * to <*ptr> and return the previous value. + */ +#define _pl_ldadd_lax(ptr, x) _pl_ldadd(ptr, x) +#define _pl_ldadd_acq(ptr, x) _pl_ldadd(ptr, x) +#define _pl_ldadd_rel(ptr, x) _pl_ldadd(ptr, x) +#define _pl_ldadd(ptr, x) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret = (unsigned long)(x); \ + asm volatile("lock xaddq %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret = (unsigned int)(x); \ + asm volatile("lock xaddl %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret = (unsigned short)(x); \ + asm volatile("lock xaddw %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret = (unsigned char)(x); \ + asm volatile("lock xaddb %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_ldadd__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_ldadd__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* fetch-and-sub: fetch integer value pointed to by pointer <ptr>, add -<x> to + * to <*ptr> and return the previous value. + */ +#define _pl_ldsub_lax(ptr, x) _pl_ldsub(ptr, x) +#define _pl_ldsub_acq(ptr, x) _pl_ldsub(ptr, x) +#define _pl_ldsub_rel(ptr, x) _pl_ldsub(ptr, x) +#define _pl_ldsub(ptr, x) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret = (unsigned long)(-x); \ + asm volatile("lock xaddq %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret = (unsigned int)(-x); \ + asm volatile("lock xaddl %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret = (unsigned short)(-x); \ + asm volatile("lock xaddw %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret = (unsigned char)(-x); \ + asm volatile("lock xaddb %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_ldsub__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_ldsub__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* exchange value <x> with integer value pointed to by pointer <ptr>, and return + * previous <*ptr> value. <x> must be of the same size as <*ptr>. + */ +#define _pl_xchg(ptr, x) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret = (unsigned long)(x); \ + asm volatile("xchgq %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret = (unsigned int)(x); \ + asm volatile("xchgl %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret = (unsigned short)(x); \ + asm volatile("xchgw %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret = (unsigned char)(x); \ + asm volatile("xchgb %0, %1\n" \ + : "=r" (ret), "+m" (*(ptr)) \ + : "0" (ret) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_xchg__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_xchg__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* compare integer value <*ptr> with <old> and exchange it with <new> if + * it matches, and return <old>. <old> and <new> must be of the same size as + * <*ptr>. + */ +#define _pl_cmpxchg(ptr, old, new) ( \ + (sizeof(long) == 8 && sizeof(*(ptr)) == 8) ? ({ \ + unsigned long ret; \ + asm volatile("lock cmpxchgq %2,%1" \ + : "=a" (ret), "+m" (*(ptr)) \ + : "r" ((unsigned long)(new)), \ + "0" ((unsigned long)(old)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 4) ? ({ \ + unsigned int ret; \ + asm volatile("lock cmpxchgl %2,%1" \ + : "=a" (ret), "+m" (*(ptr)) \ + : "r" ((unsigned int)(new)), \ + "0" ((unsigned int)(old)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 2) ? ({ \ + unsigned short ret; \ + asm volatile("lock cmpxchgw %2,%1" \ + : "=a" (ret), "+m" (*(ptr)) \ + : "r" ((unsigned short)(new)), \ + "0" ((unsigned short)(old)) \ + : "cc"); \ + ret; /* return value */ \ + }) : (sizeof(*(ptr)) == 1) ? ({ \ + unsigned char ret; \ + asm volatile("lock cmpxchgb %2,%1" \ + : "=a" (ret), "+m" (*(ptr)) \ + : "r" ((unsigned char)(new)), \ + "0" ((unsigned char)(old)) \ + : "cc"); \ + ret; /* return value */ \ + }) : ({ \ + void __unsupported_argument_size_for_pl_cmpxchg__(char *,int); \ + if (sizeof(*(ptr)) != 1 && sizeof(*(ptr)) != 2 && \ + sizeof(*(ptr)) != 4 && (sizeof(long) != 8 || sizeof(*(ptr)) != 8)) \ + __unsupported_argument_size_for_pl_cmpxchg__(__FILE__,__LINE__); \ + 0; \ + }) \ +) + +/* + * ##### ARM64 (aarch64) below ##### + */ +#elif defined(__aarch64__) + +/* This was shown to improve fairness on modern ARMv8 such as Neoverse N1 */ +#define pl_cpu_relax() do { \ + asm volatile("isb" ::: "memory"); \ + } while (0) + +/* full/load/store barriers */ +#define _pl_mb() do { asm volatile("dmb ish" ::: "memory"); } while (0) +#define _pl_mb_load() do { asm volatile("dmb ishld" ::: "memory"); } while (0) +#define _pl_mb_store() do { asm volatile("dmb ishst" ::: "memory"); } while (0) + +/* atomic full/load/store */ +#define _pl_mb_ato() do { asm volatile("dmb ish" ::: "memory"); } while (0) +#define _pl_mb_ato_load() do { asm volatile("dmb ishld" ::: "memory"); } while (0) +#define _pl_mb_ato_store() do { asm volatile("dmb ishst" ::: "memory"); } while (0) + +#endif // end of arch-specific code + + +/* + * Generic code using the C11 __atomic API for functions not defined above. + * These are usable from gcc-4.7 and clang. We'll simply rely on the macros + * defining the memory orders to detect them. All operations are not + * necessarily defined, so some fallbacks to the default methods might still + * be necessary. + */ + + +#if defined(__ATOMIC_RELAXED) && defined(__ATOMIC_CONSUME) && defined(__ATOMIC_ACQUIRE) && \ + defined(__ATOMIC_RELEASE) && defined(__ATOMIC_ACQ_REL) && defined(__ATOMIC_SEQ_CST) + +/* compiler-only memory barrier, for use around locks */ +#ifndef pl_barrier +#define pl_barrier() __atomic_signal_fence(__ATOMIC_SEQ_CST) +#endif + +/* full memory barrier */ +#ifndef pl_mb +#define pl_mb() __atomic_thread_fence(__ATOMIC_SEQ_CST) +#endif + +/* atomic load */ +#ifndef pl_load_lax +#define pl_load_lax(ptr) __atomic_load_n(ptr, __ATOMIC_RELAXED) +#endif + +#ifndef pl_load +#define pl_load(ptr) __atomic_load_n(ptr, __ATOMIC_ACQUIRE) +#endif + +/* atomic store */ +#ifndef pl_store_lax +#define pl_store_lax(ptr, x) __atomic_store_n((ptr), (x), __ATOMIC_RELAXED) +#endif + +#ifndef pl_store +#define pl_store(ptr, x) __atomic_store_n((ptr), (x), __ATOMIC_RELEASE) +#endif + +/* increment integer value pointed to by pointer <ptr>, and return non-zero if + * result is non-null. + */ +#ifndef pl_inc_lax +#define pl_inc_lax(ptr) (__atomic_add_fetch((ptr), 1, __ATOMIC_RELAXED) != 0) +#endif + +#ifndef pl_inc_acq +#define pl_inc_acq(ptr) (__atomic_add_fetch((ptr), 1, __ATOMIC_ACQUIRE) != 0) +#endif + +#ifndef pl_inc_rel +#define pl_inc_rel(ptr) (__atomic_add_fetch((ptr), 1, __ATOMIC_RELEASE) != 0) +#endif + +#ifndef pl_inc +#define pl_inc(ptr) (__atomic_add_fetch((ptr), 1, __ATOMIC_SEQ_CST) != 0) +#endif + +/* decrement integer value pointed to by pointer <ptr>, and return non-zero if + * result is non-null. + */ +#ifndef pl_dec_lax +#define pl_dec_lax(ptr) (__atomic_sub_fetch((ptr), 1, __ATOMIC_RELAXED) != 0) +#endif + +#ifndef pl_dec_acq +#define pl_dec_acq(ptr) (__atomic_sub_fetch((ptr), 1, __ATOMIC_ACQUIRE) != 0) +#endif + +#ifndef pl_dec_rel +#define pl_dec_rel(ptr) (__atomic_sub_fetch((ptr), 1, __ATOMIC_RELEASE) != 0) +#endif + +#ifndef pl_dec +#define pl_dec(ptr) (__atomic_sub_fetch((ptr), 1, __ATOMIC_SEQ_CST) != 0) +#endif + +/* increment integer value pointed to by pointer <ptr>, no return */ +#ifndef pl_inc_noret_lax +#define pl_inc_noret_lax(ptr) ((void)__atomic_add_fetch((ptr), 1, __ATOMIC_RELAXED)) +#endif + +#ifndef pl_inc_noret_acq +#define pl_inc_noret_acq(ptr) ((void)__atomic_add_fetch((ptr), 1, __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_inc_noret_rel +#define pl_inc_noret_relc(ptr) ((void)__atomic_add_fetch((ptr), 1, __ATOMIC_RELEASE)) +#endif + +#ifndef pl_inc_noret +#define pl_inc_noret(ptr) ((void)__atomic_add_fetch((ptr), 1, __ATOMIC_SEQ_CST)) +#endif + +/* decrement integer value pointed to by pointer <ptr>, no return */ +#ifndef pl_dec_noret_lax +#define pl_dec_noret_lax(ptr) ((void)__atomic_sub_fetch((ptr), 1, __ATOMIC_RELAXED)) +#endif + +#ifndef pl_dec_noret_acq +#define pl_dec_noret_acq(ptr) ((void)__atomic_sub_fetch((ptr), 1, __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_dec_noret_rel +#define pl_dec_noret_relc(ptr) ((void)__atomic_sub_fetch((ptr), 1, __ATOMIC_RELEASE)) +#endif + +#ifndef pl_dec_noret +#define pl_dec_noret(ptr) ((void)__atomic_sub_fetch((ptr), 1, __ATOMIC_SEQ_CST)) +#endif + +/* add integer constant <x> to integer value pointed to by pointer <ptr>, + * no return. Size of <x> is not checked. + */ +#ifndef pl_add_lax +#define pl_add_lax(ptr, x) (__atomic_add_fetch((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_add_acq +#define pl_add_acq(ptr, x) (__atomic_add_fetch((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_add_rel +#define pl_add_relc(ptr, x) (__atomic_add_fetch((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_add +#define pl_add(ptr, x) (__atomic_add_fetch((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* subtract integer constant <x> from integer value pointed to by pointer + * <ptr>, no return. Size of <x> is not checked. + */ +#ifndef pl_sub_lax +#define pl_sub_lax(ptr, x) (__atomic_sub_fetch((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_sub_acq +#define pl_sub_acq(ptr, x) (__atomic_sub_fetch((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_sub_rel +#define pl_sub_relc(ptr, x) (__atomic_sub_fetch((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_sub +#define pl_sub(ptr, x) (__atomic_sub_fetch((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* binary and integer value pointed to by pointer <ptr> with constant <x>, no + * return. Size of <x> is not checked. + */ +#ifndef pl_and_lax +#define pl_and_lax(ptr, x) (__atomic_and_fetch((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_and_acq +#define pl_and_acq(ptr, x) (__atomic_and_fetch((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_and_rel +#define pl_and_relc(ptr, x) (__atomic_and_fetch((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_and +#define pl_and(ptr, x) (__atomic_and_fetch((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* binary or integer value pointed to by pointer <ptr> with constant <x>, no + * return. Size of <x> is not checked. + */ +#ifndef pl_or_lax +#define pl_or_lax(ptr, x) (__atomic_or_fetch((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_or_acq +#define pl_or_acq(ptr, x) (__atomic_or_fetch((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_or_rel +#define pl_or_relc(ptr, x) (__atomic_or_fetch((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_or +#define pl_or(ptr, x) (__atomic_or_fetch((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* binary xor integer value pointed to by pointer <ptr> with constant <x>, no + * return. Size of <x> is not checked. + */ +#ifndef pl_xor_lax +#define pl_xor_lax(ptr, x) (__atomic_xor_fetch((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_xor_acq +#define pl_xor_acq(ptr, x) (__atomic_xor_fetch((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_xor_rel +#define pl_xor_relc(ptr, x) (__atomic_xor_fetch((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_xor +#define pl_xor(ptr, x) (__atomic_xor_fetch((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* fetch-and-add: fetch integer value pointed to by pointer <ptr>, add <x> to + * to <*ptr> and return the previous value. + * => THIS IS LEGACY, USE pl_ldadd() INSTEAD. + */ +#ifndef pl_xadd +#define pl_xadd(ptr, x) (__atomic_fetch_add((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* exchange value <x> with integer value pointed to by pointer <ptr>, and return + * previous <*ptr> value. <x> must be of the same size as <*ptr>. + */ +#ifndef pl_xchg +#define pl_xchg(ptr, x) (__atomic_exchange_n((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +/* compare integer value <*ptr> with <old> and exchange it with <new> if + * it matches, and return <old>. <old> and <new> must be of the same size as + * <*ptr>. + */ +#ifndef pl_cmpxchg +#define pl_cmpxchg(ptr, old, new) ({ \ + typeof(*ptr) __old = (old); \ + __atomic_compare_exchange_n((ptr), &__old, (new), 0, __ATOMIC_SEQ_CST, __ATOMIC_RELAXED); \ + __old; }) +#endif + +/* fetch-and-add: fetch integer value pointed to by pointer <ptr>, add <x> to + * to <*ptr> and return the previous value. + */ +#ifndef pl_ldadd_lax +#define pl_ldadd_lax(ptr, x) (__atomic_fetch_add((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_ldadd_acq +#define pl_ldadd_acq(ptr, x) (__atomic_fetch_add((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_ldadd_rel +#define pl_ldadd_relc(ptr, x) (__atomic_fetch_add((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_ldadd +#define pl_ldadd(ptr, x) (__atomic_fetch_add((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + + +#ifndef pl_ldand_lax +#define pl_ldand_lax(ptr, x) (__atomic_fetch_and((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_ldand_acq +#define pl_ldand_acq(ptr, x) (__atomic_fetch_and((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_ldand_rel +#define pl_ldand_relc(ptr, x) (__atomic_fetch_and((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_ldand +#define pl_ldand(ptr, x) (__atomic_fetch_and((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + + +#ifndef pl_ldor_lax +#define pl_ldor_lax(ptr, x) (__atomic_fetch_or((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_ldor_acq +#define pl_ldor_acq(ptr, x) (__atomic_fetch_or((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_ldor_rel +#define pl_ldor_relc(ptr, x) (__atomic_fetch_or((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_ldor +#define pl_ldor(ptr, x) (__atomic_fetch_or((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + + +#ifndef pl_ldsub_lax +#define pl_ldsub_lax(ptr, x) (__atomic_fetch_sub((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_ldsub_acq +#define pl_ldsub_acq(ptr, x) (__atomic_fetch_sub((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_ldsub_rel +#define pl_ldsub_relc(ptr, x) (__atomic_fetch_sub((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_ldsub +#define pl_ldsub(ptr, x) (__atomic_fetch_sub((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + + +#ifndef pl_ldxor_lax +#define pl_ldxor_lax(ptr, x) (__atomic_fetch_xor((ptr), (x), __ATOMIC_RELAXED)) +#endif + +#ifndef pl_ldxor_acq +#define pl_ldxor_acq(ptr, x) (__atomic_fetch_xor((ptr), (x), __ATOMIC_ACQUIRE)) +#endif + +#ifndef pl_ldxor_rel +#define pl_ldxor_relc(ptr, x) (__atomic_fetch_xor((ptr), (x), __ATOMIC_RELEASE)) +#endif + +#ifndef pl_ldxor +#define pl_ldxor(ptr, x) (__atomic_fetch_xor((ptr), (x), __ATOMIC_SEQ_CST)) +#endif + +#endif /* end of C11 atomics */ + + +/* + * Automatically remap to fallback code when available. This allows the arch + * specific code above to be used as an immediate fallback for missing C11 + * definitions. Everything not defined will use the generic code at the end. + */ + +#if !defined(pl_cpu_relax) && defined(_pl_cpu_relax) +# define pl_cpu_relax _pl_cpu_relax +#endif + +#if !defined(pl_barrier) && defined(_pl_barrier) +# define pl_barrier _pl_barrier +#endif + +#if !defined(pl_mb) && defined(_pl_mb) +# define pl_mb _pl_mb +#endif + +#if !defined(pl_mb_load) && defined(_pl_mb_load) +# define pl_mb_load _pl_mb_load +#endif + +#if !defined(pl_mb_store) && defined(_pl_mb_store) +# define pl_mb_store _pl_mb_store +#endif + +#if !defined(pl_mb_ato) && defined(_pl_mb_ato) +# define pl_mb_ato _pl_mb_ato +#endif + +#if !defined(pl_mb_ato_load) && defined(_pl_mb_ato_load) +# define pl_mb_ato_load _pl_mb_ato_load +#endif + +#if !defined(pl_mb_ato_store) && defined(_pl_mb_ato_store) +# define pl_mb_ato_store _pl_mb_ato_store +#endif + + +#if !defined(pl_load) && defined(_pl_load) +#define pl_load _pl_load +#endif + +#if !defined(pl_load_lax) && defined(_pl_load_lax) +#define pl_load_lax _pl_load_lax +#endif + +#if !defined(pl_store) && defined(_pl_store) +#define pl_store _pl_store +#endif + +#if !defined(pl_store_lax) && defined(_pl_store_lax) +#define pl_store_lax _pl_store_lax +#endif + + +#if !defined(pl_inc_noret_lax) && defined(_pl_inc_noret_lax) +# define pl_inc_noret_lax _pl_inc_noret_lax +#endif + +#if !defined(pl_inc_noret_acq) && defined(_pl_inc_noret_acq) +# define pl_inc_noret_acq _pl_inc_noret_acq +#endif + +#if !defined(pl_inc_noret_rel) && defined(_pl_inc_noret_rel) +# define pl_inc_noret_rel _pl_inc_noret_rel +#endif + +#if !defined(pl_inc_noret) && defined(_pl_inc_noret) +# define pl_inc_noret _pl_inc_noret +#endif + + +#if !defined(pl_dec_noret_lax) && defined(_pl_dec_noret_lax) +# define pl_dec_noret_lax _pl_dec_noret_lax +#endif + +#if !defined(pl_dec_noret_acq) && defined(_pl_dec_noret_acq) +# define pl_dec_noret_acq _pl_dec_noret_acq +#endif + +#if !defined(pl_dec_noret_rel) && defined(_pl_dec_noret_rel) +# define pl_dec_noret_rel _pl_dec_noret_rel +#endif + +#if !defined(pl_dec_noret) && defined(_pl_dec_noret) +# define pl_dec_noret _pl_dec_noret +#endif + + +#if !defined(pl_inc_lax) && defined(_pl_inc_lax) +# define pl_inc_lax _pl_inc_lax +#endif + +#if !defined(pl_inc_acq) && defined(_pl_inc_acq) +# define pl_inc_acq _pl_inc_acq +#endif + +#if !defined(pl_inc_rel) && defined(_pl_inc_rel) +# define pl_inc_rel _pl_inc_rel +#endif + +#if !defined(pl_inc) && defined(_pl_inc) +# define pl_inc _pl_inc +#endif + + +#if !defined(pl_dec_lax) && defined(_pl_dec_lax) +# define pl_dec_lax _pl_dec_lax +#endif + +#if !defined(pl_dec_acq) && defined(_pl_dec_acq) +# define pl_dec_acq _pl_dec_acq +#endif + +#if !defined(pl_dec_rel) && defined(_pl_dec_rel) +# define pl_dec_rel _pl_dec_rel +#endif + +#if !defined(pl_dec) && defined(_pl_dec) +# define pl_dec _pl_dec +#endif + + +#if !defined(pl_add_lax) && defined(_pl_add_lax) +# define pl_add_lax _pl_add_lax +#endif + +#if !defined(pl_add_acq) && defined(_pl_add_acq) +# define pl_add_acq _pl_add_acq +#endif + +#if !defined(pl_add_rel) && defined(_pl_add_rel) +# define pl_add_rel _pl_add_rel +#endif + +#if !defined(pl_add) && defined(_pl_add) +# define pl_add _pl_add +#endif + + +#if !defined(pl_add_noret_lax) && defined(_pl_add_noret_lax) +# define pl_add_noret_lax _pl_add_noret_lax +#endif + +#if !defined(pl_add_noret_acq) && defined(_pl_add_noret_acq) +# define pl_add_noret_acq _pl_add_noret_acq +#endif + +#if !defined(pl_add_noret_rel) && defined(_pl_add_noret_rel) +# define pl_add_noret_rel _pl_add_noret_rel +#endif + +#if !defined(pl_add_noret) && defined(_pl_add_noret) +# define pl_add_noret _pl_add_noret +#endif + +#if !defined(pl_and_lax) && defined(_pl_and_lax) +# define pl_and_lax _pl_and_lax +#endif + +#if !defined(pl_and_acq) && defined(_pl_and_acq) +# define pl_and_acq _pl_and_acq +#endif + +#if !defined(pl_and_rel) && defined(_pl_and_rel) +# define pl_and_rel _pl_and_rel +#endif + +#if !defined(pl_and) && defined(_pl_and) +# define pl_and _pl_and +#endif + + +#if !defined(pl_and_noret_lax) && defined(_pl_and_noret_lax) +# define pl_and_noret_lax _pl_and_noret_lax +#endif + +#if !defined(pl_and_noret_acq) && defined(_pl_and_noret_acq) +# define pl_and_noret_acq _pl_and_noret_acq +#endif + +#if !defined(pl_and_noret_rel) && defined(_pl_and_noret_rel) +# define pl_and_noret_rel _pl_and_noret_rel +#endif + +#if !defined(pl_and_noret) && defined(_pl_and_noret) +# define pl_and_noret _pl_and_noret +#endif + + +#if !defined(pl_or_lax) && defined(_pl_or_lax) +# define pl_or_lax _pl_or_lax +#endif + +#if !defined(pl_or_acq) && defined(_pl_or_acq) +# define pl_or_acq _pl_or_acq +#endif + +#if !defined(pl_or_rel) && defined(_pl_or_rel) +# define pl_or_rel _pl_or_rel +#endif + +#if !defined(pl_or) && defined(_pl_or) +# define pl_or _pl_or +#endif + + +#if !defined(pl_or_noret_lax) && defined(_pl_or_noret_lax) +# define pl_or_noret_lax _pl_or_noret_lax +#endif + +#if !defined(pl_or_noret_acq) && defined(_pl_or_noret_acq) +# define pl_or_noret_acq _pl_or_noret_acq +#endif + +#if !defined(pl_or_noret_rel) && defined(_pl_or_noret_rel) +# define pl_or_noret_rel _pl_or_noret_rel +#endif + +#if !defined(pl_or_noret) && defined(_pl_or_noret) +# define pl_or_noret _pl_or_noret +#endif + + +#if !defined(pl_xor_lax) && defined(_pl_xor_lax) +# define pl_xor_lax _pl_xor_lax +#endif + +#if !defined(pl_xor_acq) && defined(_pl_xor_acq) +# define pl_xor_acq _pl_xor_acq +#endif + +#if !defined(pl_xor_rel) && defined(_pl_xor_rel) +# define pl_xor_rel _pl_xor_rel +#endif + +#if !defined(pl_xor) && defined(_pl_xor) +# define pl_xor _pl_xor +#endif + + +#if !defined(pl_xor_noret_lax) && defined(_pl_xor_noret_lax) +# define pl_xor_noret_lax _pl_xor_noret_lax +#endif + +#if !defined(pl_xor_noret_acq) && defined(_pl_xor_noret_acq) +# define pl_xor_noret_acq _pl_xor_noret_acq +#endif + +#if !defined(pl_xor_noret_rel) && defined(_pl_xor_noret_rel) +# define pl_xor_noret_rel _pl_xor_noret_rel +#endif + +#if !defined(pl_xor_noret) && defined(_pl_xor_noret) +# define pl_xor_noret _pl_xor_noret +#endif + + +#if !defined(pl_sub_lax) && defined(_pl_sub_lax) +# define pl_sub_lax _pl_sub_lax +#endif + +#if !defined(pl_sub_acq) && defined(_pl_sub_acq) +# define pl_sub_acq _pl_sub_acq +#endif + +#if !defined(pl_sub_rel) && defined(_pl_sub_rel) +# define pl_sub_rel _pl_sub_rel +#endif + +#if !defined(pl_sub) && defined(_pl_sub) +# define pl_sub _pl_sub +#endif + + +#if !defined(pl_sub_noret_lax) && defined(_pl_sub_noret_lax) +# define pl_sub_noret_lax _pl_sub_noret_lax +#endif + +#if !defined(pl_sub_noret_acq) && defined(_pl_sub_noret_acq) +# define pl_sub_noret_acq _pl_sub_noret_acq +#endif + +#if !defined(pl_sub_noret_rel) && defined(_pl_sub_noret_rel) +# define pl_sub_noret_rel _pl_sub_noret_rel +#endif + +#if !defined(pl_sub_noret) && defined(_pl_sub_noret) +# define pl_sub_noret _pl_sub_noret +#endif + + +#if !defined(pl_btr_lax) && defined(_pl_btr_lax) +# define pl_btr_lax _pl_btr_lax +#endif + +#if !defined(pl_btr_acq) && defined(_pl_btr_acq) +# define pl_btr_acq _pl_btr_acq +#endif + +#if !defined(pl_btr_rel) && defined(_pl_btr_rel) +# define pl_btr_rel _pl_btr_rel +#endif + +#if !defined(pl_btr) && defined(_pl_btr) +# define pl_btr _pl_btr +#endif + + +#if !defined(pl_bts_lax) && defined(_pl_bts_lax) +# define pl_bts_lax _pl_bts_lax +#endif + +#if !defined(pl_bts_acq) && defined(_pl_bts_acq) +# define pl_bts_acq _pl_bts_acq +#endif + +#if !defined(pl_bts_rel) && defined(_pl_bts_rel) +# define pl_bts_rel _pl_bts_rel +#endif + +#if !defined(pl_bts) && defined(_pl_bts) +# define pl_bts _pl_bts +#endif + + +#if !defined(pl_xadd) && defined(_pl_xadd) +# define pl_xadd _pl_xadd +#endif + +#if !defined(pl_cmpxchg) && defined(_pl_cmpxchg) +# define pl_cmpxchg _pl_cmpxchg +#endif + +#if !defined(pl_xchg) && defined(_pl_xchg) +# define pl_xchg _pl_xchg +#endif + + +#if !defined(pl_ldadd_lax) && defined(_pl_ldadd_lax) +# define pl_ldadd_lax _pl_ldadd_lax +#endif + +#if !defined(pl_ldadd_acq) && defined(_pl_ldadd_acq) +# define pl_ldadd_acq _pl_ldadd_acq +#endif + +#if !defined(pl_ldadd_rel) && defined(_pl_ldadd_rel) +# define pl_ldadd_rel _pl_ldadd_rel +#endif + +#if !defined(pl_ldadd) && defined(_pl_ldadd) +# define pl_ldadd _pl_ldadd +#endif + + +#if !defined(pl_ldand_lax) && defined(_pl_ldand_lax) +# define pl_ldand_lax _pl_ldand_lax +#endif + +#if !defined(pl_ldand_acq) && defined(_pl_ldand_acq) +# define pl_ldand_acq _pl_ldand_acq +#endif + +#if !defined(pl_ldand_rel) && defined(_pl_ldand_rel) +# define pl_ldand_rel _pl_ldand_rel +#endif + +#if !defined(pl_ldand) && defined(_pl_ldand) +# define pl_ldand _pl_ldand +#endif + + +#if !defined(pl_ldor_lax) && defined(_pl_ldor_lax) +# define pl_ldor_lax _pl_ldor_lax +#endif + +#if !defined(pl_ldor_acq) && defined(_pl_ldor_acq) +# define pl_ldor_acq _pl_ldor_acq +#endif + +#if !defined(pl_ldor_rel) && defined(_pl_ldor_rel) +# define pl_ldor_rel _pl_ldor_rel +#endif + +#if !defined(pl_ldor) && defined(_pl_ldor) +# define pl_ldor _pl_ldor +#endif + + +#if !defined(pl_ldxor_lax) && defined(_pl_ldxor_lax) +# define pl_ldxor_lax _pl_ldxor_lax +#endif + +#if !defined(pl_ldxor_acq) && defined(_pl_ldxor_acq) +# define pl_ldxor_acq _pl_ldxor_acq +#endif + +#if !defined(pl_ldxor_rel) && defined(_pl_ldxor_rel) +# define pl_ldxor_rel _pl_ldxor_rel +#endif + +#if !defined(pl_ldxor) && defined(_pl_ldxor) +# define pl_ldxor _pl_ldxor +#endif + + +#if !defined(pl_ldsub_lax) && defined(_pl_ldsub_lax) +# define pl_ldsub_lax _pl_ldsub_lax +#endif + +#if !defined(pl_ldsub_acq) && defined(_pl_ldsub_acq) +# define pl_ldsub_acq _pl_ldsub_acq +#endif + +#if !defined(pl_ldsub_rel) && defined(_pl_ldsub_rel) +# define pl_ldsub_rel _pl_ldsub_rel +#endif + +#if !defined(pl_ldsub) && defined(_pl_ldsub) +# define pl_ldsub _pl_ldsub +#endif + + +/* + * Generic code using the __sync API for everything not defined above. + */ + + +/* CPU relaxation while waiting */ +#ifndef pl_cpu_relax +#define pl_cpu_relax() do { \ + asm volatile(""); \ + } while (0) +#endif + +/* compiler-only memory barrier, for use around locks */ +#ifndef pl_barrier +#define pl_barrier() do { \ + asm volatile("" ::: "memory"); \ + } while (0) +#endif + +/* full memory barrier */ +#ifndef pl_mb +#define pl_mb() do { \ + __sync_synchronize(); \ + } while (0) +#endif + +#ifndef pl_mb_load +#define pl_mb_load() pl_mb() +#endif + +#ifndef pl_mb_store +#define pl_mb_store() pl_mb() +#endif + +#ifndef pl_mb_ato +#define pl_mb_ato() pl_mb() +#endif + +#ifndef pl_mb_ato_load +#define pl_mb_ato_load() pl_mb_ato() +#endif + +#ifndef pl_mb_ato_store +#define pl_mb_ato_store() pl_mb_ato() +#endif + +/* atomic load: volatile after a load barrier */ +#ifndef pl_load +#define pl_load(ptr) ({ \ + typeof(*(ptr)) __pl_ret = ({ \ + pl_mb_load(); \ + *(volatile typeof(ptr))ptr; \ + }); \ + __pl_ret; \ + }) +#endif + +/* atomic store, old style using a CAS */ +#ifndef pl_store +#define pl_store(ptr, x) do { \ + typeof((ptr)) __pl_ptr = (ptr); \ + typeof((x)) __pl_x = (x); \ + typeof(*(ptr)) __pl_old; \ + do { \ + __pl_old = *__pl_ptr; \ + } while (!__sync_bool_compare_and_swap(__pl_ptr, __pl_old, __pl_x)); \ + } while (0) +#endif + +#ifndef pl_inc_noret +#define pl_inc_noret(ptr) do { __sync_add_and_fetch((ptr), 1); } while (0) +#endif + +#ifndef pl_dec_noret +#define pl_dec_noret(ptr) do { __sync_sub_and_fetch((ptr), 1); } while (0) +#endif + +#ifndef pl_inc +#define pl_inc(ptr) ({ __sync_add_and_fetch((ptr), 1); }) +#endif + +#ifndef pl_dec +#define pl_dec(ptr) ({ __sync_sub_and_fetch((ptr), 1); }) +#endif + +#ifndef pl_add +#define pl_add(ptr, x) ({ __sync_add_and_fetch((ptr), (x)); }) +#endif + +#ifndef pl_and +#define pl_and(ptr, x) ({ __sync_and_and_fetch((ptr), (x)); }) +#endif + +#ifndef pl_or +#define pl_or(ptr, x) ({ __sync_or_and_fetch((ptr), (x)); }) +#endif + +#ifndef pl_xor +#define pl_xor(ptr, x) ({ __sync_xor_and_fetch((ptr), (x)); }) +#endif + +#ifndef pl_sub +#define pl_sub(ptr, x) ({ __sync_sub_and_fetch((ptr), (x)); }) +#endif + +#ifndef pl_btr +#define pl_btr(ptr, bit) ({ typeof(*(ptr)) __pl_t = ((typeof(*(ptr)))1) << (bit); \ + __sync_fetch_and_and((ptr), ~__pl_t) & __pl_t; \ + }) +#endif + +#ifndef pl_bts +#define pl_bts(ptr, bit) ({ typeof(*(ptr)) __pl_t = ((typeof(*(ptr)))1) << (bit); \ + __sync_fetch_and_or((ptr), __pl_t) & __pl_t; \ + }) +#endif + +#ifndef pl_xadd +#define pl_xadd(ptr, x) ({ __sync_fetch_and_add((ptr), (x)); }) +#endif + +#ifndef pl_cmpxchg +#define pl_cmpxchg(ptr, o, n) ({ __sync_val_compare_and_swap((ptr), (o), (n)); }) +#endif + +#ifndef pl_xchg +#define pl_xchg(ptr, x) ({ \ + typeof((ptr)) __pl_ptr = (ptr); \ + typeof((x)) __pl_x = (x); \ + typeof(*(ptr)) __pl_old; \ + do { \ + __pl_old = *__pl_ptr; \ + } while (!__sync_bool_compare_and_swap(__pl_ptr, __pl_old, __pl_x)); \ + __pl_old; \ + }) +#endif + +#ifndef pl_ldadd +#define pl_ldadd(ptr, x) ({ __sync_fetch_and_add((ptr), (x)); }) +#endif + +#ifndef pl_ldand +#define pl_ldand(ptr, x) ({ __sync_fetch_and_and((ptr), (x)); }) +#endif + +#ifndef pl_ldor +#define pl_ldor(ptr, x) ({ __sync_fetch_and_or((ptr), (x)); }) +#endif + +#ifndef pl_ldxor +#define pl_ldxor(ptr, x) ({ __sync_fetch_and_xor((ptr), (x)); }) +#endif + +#ifndef pl_ldsub +#define pl_ldsub(ptr, x) ({ __sync_fetch_and_sub((ptr), (x)); }) +#endif + +/* certain _noret operations may be defined from the regular ones */ +#if !defined(pl_inc_noret) && defined(pl_inc) +# define pl_inc_noret(ptr) (void)pl_inc(ptr) +#endif + +#if !defined(pl_dec_noret) && defined(pl_dec) +# define pl_dec_noret(ptr) (void)pl_dec(ptr) +#endif + +#if !defined(pl_add_noret) && defined(pl_add) +# define pl_add_noret(ptr, x) (void)pl_add(ptr, x) +#endif + +#if !defined(pl_sub_noret) && defined(pl_sub) +# define pl_sub_noret(ptr, x) (void)pl_sub(ptr, x) +#endif + +#if !defined(pl_or_noret) && defined(pl_or) +# define pl_or_noret(ptr, x) (void)pl_or(ptr, x) +#endif + +#if !defined(pl_and_noret) && defined(pl_and) +# define pl_and_noret(ptr, x) (void)pl_and(ptr, x) +#endif + +#if !defined(pl_xor_noret) && defined(pl_xor) +# define pl_xor_noret(ptr, x) (void)pl_xor(ptr, x) +#endif + +/* certain memory orders may fallback to the generic seq_cst definition */ + +#if !defined(pl_load_lax) && defined(pl_load) +#define pl_load_lax pl_load +#endif + + +#if !defined(pl_store_lax) && defined(pl_store) +#define pl_store_lax pl_store +#endif + + +#if !defined(pl_inc_lax) && defined(pl_inc) +# define pl_inc_lax pl_inc +#endif +#if !defined(pl_inc_acq) && defined(pl_inc) +# define pl_inc_acq pl_inc +#endif +#if !defined(pl_inc_rel) && defined(pl_inc) +# define pl_inc_rel pl_inc +#endif + + +#if !defined(pl_dec_lax) && defined(pl_dec) +# define pl_dec_lax pl_dec +#endif +#if !defined(pl_dec_acq) && defined(pl_dec) +# define pl_dec_acq pl_dec +#endif + +#if !defined(pl_dec_rel) && defined(pl_dec) +# define pl_dec_rel pl_dec +#endif + + +#if !defined(pl_inc_noret_lax) && defined(pl_inc_noret) +# define pl_inc_noret_lax pl_inc_noret +#endif + +#if !defined(pl_inc_noret_acq) && defined(pl_inc_noret) +# define pl_inc_noret_acq pl_inc_noret +#endif + +#if !defined(pl_inc_noret_rel) && defined(pl_inc_noret) +# define pl_inc_noret_rel pl_inc_noret +#endif + + +#if !defined(pl_dec_noret_lax) && defined(pl_dec_noret) +# define pl_dec_noret_lax pl_dec_noret +#endif + +#if !defined(pl_dec_noret_acq) && defined(pl_dec_noret) +# define pl_dec_noret_acq pl_dec_noret +#endif + +#if !defined(pl_dec_noret_rel) && defined(pl_dec_noret) +# define pl_dec_noret_rel pl_dec_noret +#endif + + +#if !defined(pl_add_lax) && defined(pl_add) +# define pl_add_lax pl_add +#endif + +#if !defined(pl_add_acq) && defined(pl_add) +# define pl_add_acq pl_add +#endif + +#if !defined(pl_add_rel) && defined(pl_add) +# define pl_add_rel pl_add +#endif + + +#if !defined(pl_sub_lax) && defined(pl_sub) +# define pl_sub_lax pl_sub +#endif + +#if !defined(pl_sub_acq) && defined(pl_sub) +# define pl_sub_acq pl_sub +#endif + +#if !defined(pl_sub_rel) && defined(pl_sub) +# define pl_sub_rel pl_sub +#endif + + +#if !defined(pl_and_lax) && defined(pl_and) +# define pl_and_lax pl_and +#endif + +#if !defined(pl_and_acq) && defined(pl_and) +# define pl_and_acq pl_and +#endif + +#if !defined(pl_and_rel) && defined(pl_and) +# define pl_and_rel pl_and +#endif + + +#if !defined(pl_or_lax) && defined(pl_or) +# define pl_or_lax pl_or +#endif + +#if !defined(pl_or_acq) && defined(pl_or) +# define pl_or_acq pl_or +#endif + +#if !defined(pl_or_rel) && defined(pl_or) +# define pl_or_rel pl_or +#endif + + +#if !defined(pl_xor_lax) && defined(pl_xor) +# define pl_xor_lax pl_xor +#endif + +#if !defined(pl_xor_acq) && defined(pl_xor) +# define pl_xor_acq pl_xor +#endif + +#if !defined(pl_xor_rel) && defined(pl_xor) +# define pl_xor_rel pl_xor +#endif + + +#if !defined(pl_add_noret_lax) && defined(pl_add_noret) +# define pl_add_noret_lax pl_add_noret +#endif + +#if !defined(pl_add_noret_acq) && defined(pl_add_noret) +# define pl_add_noret_acq pl_add_noret +#endif + +#if !defined(pl_add_noret_rel) && defined(pl_add_noret) +# define pl_add_noret_rel pl_add_noret +#endif + + +#if !defined(pl_sub_noret_lax) && defined(pl_sub_noret) +# define pl_sub_noret_lax pl_sub_noret +#endif + +#if !defined(pl_sub_noret_acq) && defined(pl_sub_noret) +# define pl_sub_noret_acq pl_sub_noret +#endif + +#if !defined(pl_sub_noret_rel) && defined(pl_sub_noret) +# define pl_sub_noret_rel pl_sub_noret +#endif + + +#if !defined(pl_and_noret_lax) && defined(pl_and_noret) +# define pl_and_noret_lax pl_and_noret +#endif + +#if !defined(pl_and_noret_acq) && defined(pl_and_noret) +# define pl_and_noret_acq pl_and_noret +#endif + +#if !defined(pl_and_noret_rel) && defined(pl_and_noret) +# define pl_and_noret_rel pl_and_noret +#endif + + +#if !defined(pl_or_noret_lax) && defined(pl_or_noret) +# define pl_or_noret_lax pl_or_noret +#endif + +#if !defined(pl_or_noret_acq) && defined(pl_or_noret) +# define pl_or_noret_acq pl_or_noret +#endif + +#if !defined(pl_or_noret_rel) && defined(pl_or_noret) +# define pl_or_noret_rel pl_or_noret +#endif + + +#if !defined(pl_xor_noret_lax) && defined(pl_xor_noret) +# define pl_xor_noret_lax pl_xor_noret +#endif + +#if !defined(pl_xor_noret_acq) && defined(pl_xor_noret) +# define pl_xor_noret_acq pl_xor_noret +#endif + +#if !defined(pl_xor_noret_rel) && defined(pl_xor_noret) +# define pl_xor_noret_rel pl_xor_noret +#endif + + +#if !defined(pl_btr_lax) && defined(pl_btr) +# define pl_btr_lax pl_btr +#endif + +#if !defined(pl_btr_acq) && defined(pl_btr) +# define pl_btr_acq pl_btr +#endif + +#if !defined(pl_btr_rel) && defined(pl_btr) +# define pl_btr_rel pl_btr +#endif + + +#if !defined(pl_bts_lax) && defined(pl_bts) +# define pl_bts_lax pl_bts +#endif + +#if !defined(pl_bts_acq) && defined(pl_bts) +# define pl_bts_acq pl_bts +#endif + +#if !defined(pl_bts_rel) && defined(pl_bts) +# define pl_bts_rel pl_bts +#endif + + +#if !defined(pl_ldadd_lax) && defined(pl_ldadd) +# define pl_ldadd_lax pl_ldadd +#endif + +#if !defined(pl_ldadd_acq) && defined(pl_ldadd) +# define pl_ldadd_acq pl_ldadd +#endif + +#if !defined(pl_ldadd_rel) && defined(pl_ldadd) +# define pl_ldadd_rel pl_ldadd +#endif + + +#if !defined(pl_ldsub_lax) && defined(pl_ldsub) +# define pl_ldsub_lax pl_ldsub +#endif + +#if !defined(pl_ldsub_acq) && defined(pl_ldsub) +# define pl_ldsub_acq pl_ldsub +#endif + +#if !defined(pl_ldsub_rel) && defined(pl_ldsub) +# define pl_ldsub_rel pl_ldsub +#endif + + +#if !defined(pl_ldand_lax) && defined(pl_ldand) +# define pl_ldand_lax pl_ldand +#endif + +#if !defined(pl_ldand_acq) && defined(pl_ldand) +# define pl_ldand_acq pl_ldand +#endif + +#if !defined(pl_ldand_rel) && defined(pl_ldand) +# define pl_ldand_rel pl_ldand +#endif + + +#if !defined(pl_ldor_lax) && defined(pl_ldor) +# define pl_ldor_lax pl_ldor +#endif + +#if !defined(pl_ldor_acq) && defined(pl_ldor) +# define pl_ldor_acq pl_ldor +#endif + +#if !defined(pl_ldor_rel) && defined(pl_ldor) +# define pl_ldor_rel pl_ldor +#endif + + +#if !defined(pl_ldxor_lax) && defined(pl_ldxor) +# define pl_ldxor_lax pl_ldxor +#endif + +#if !defined(pl_ldxor_acq) && defined(pl_ldxor) +# define pl_ldxor_acq pl_ldxor +#endif + +#if !defined(pl_ldxor_rel) && defined(pl_ldxor) +# define pl_ldxor_rel pl_ldxor +#endif + + +#endif /* PL_ATOMIC_OPS_H */ |