/* Power ISA 3.0 atomic memory operation include file. Copyright (C) 2017-2021 Free Software Foundation, Inc. Contributed by Michael Meissner . This file is part of GCC. GCC 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, or (at your option) any later version. GCC 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. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see . */ #ifndef _AMO_H #define _AMO_H #if !defined(_ARCH_PWR9) || !defined(_ARCH_PPC64) #error "The atomic memory operations require Power 64-bit ISA 3.0" #else #include /* Enumeration of the LWAT/LDAT sub-opcodes. */ enum _AMO_LD { _AMO_LD_ADD = 0x00, /* Fetch and Add. */ _AMO_LD_XOR = 0x01, /* Fetch and Xor. */ _AMO_LD_IOR = 0x02, /* Fetch and Ior. */ _AMO_LD_AND = 0x03, /* Fetch and And. */ _AMO_LD_UMAX = 0x04, /* Fetch and Unsigned Maximum. */ _AMO_LD_SMAX = 0x05, /* Fetch and Signed Maximum. */ _AMO_LD_UMIN = 0x06, /* Fetch and Unsigned Minimum. */ _AMO_LD_SMIN = 0x07, /* Fetch and Signed Minimum. */ _AMO_LD_SWAP = 0x08, /* Swap. */ _AMO_LD_CS_NE = 0x10, /* Compare and Swap Not Equal. */ _AMO_LD_INC_BOUNDED = 0x18, /* Fetch and Increment Bounded. */ _AMO_LD_INC_EQUAL = 0x19, /* Fetch and Increment Equal. */ _AMO_LD_DEC_BOUNDED = 0x1A /* Fetch and Decrement Bounded. */ }; /* Implementation of the simple LWAT/LDAT operations that take one register and modify one word or double-word of memory and return the value that was previously in the memory location. The LWAT/LDAT opcode requires the address to be a single register, and that points to a suitably aligned memory location. Asm volatile is used to prevent the optimizer from moving the operation. */ #define _AMO_LD_SIMPLE(NAME, TYPE, OPCODE, FC) \ static __inline__ TYPE \ NAME (TYPE *_PTR, TYPE _VALUE) \ { \ unsigned __int128 _TMP; \ TYPE _RET; \ __asm__ volatile ("mr %L1,%3\n" \ "\t" OPCODE " %1,%P0,%4\n" \ "\tmr %2,%1\n" \ : "+Q" (_PTR[0]), "=&r" (_TMP), "=r" (_RET) \ : "r" (_VALUE), "n" (FC)); \ return _RET; \ } _AMO_LD_SIMPLE (amo_lwat_add, uint32_t, "lwat", _AMO_LD_ADD) _AMO_LD_SIMPLE (amo_lwat_xor, uint32_t, "lwat", _AMO_LD_XOR) _AMO_LD_SIMPLE (amo_lwat_ior, uint32_t, "lwat", _AMO_LD_IOR) _AMO_LD_SIMPLE (amo_lwat_and, uint32_t, "lwat", _AMO_LD_AND) _AMO_LD_SIMPLE (amo_lwat_umax, uint32_t, "lwat", _AMO_LD_UMAX) _AMO_LD_SIMPLE (amo_lwat_umin, uint32_t, "lwat", _AMO_LD_UMIN) _AMO_LD_SIMPLE (amo_lwat_swap, uint32_t, "lwat", _AMO_LD_SWAP) _AMO_LD_SIMPLE (amo_lwat_sadd, int32_t, "lwat", _AMO_LD_ADD) _AMO_LD_SIMPLE (amo_lwat_smax, int32_t, "lwat", _AMO_LD_SMAX) _AMO_LD_SIMPLE (amo_lwat_smin, int32_t, "lwat", _AMO_LD_SMIN) _AMO_LD_SIMPLE (amo_lwat_sswap, int32_t, "lwat", _AMO_LD_SWAP) _AMO_LD_SIMPLE (amo_ldat_add, uint64_t, "ldat", _AMO_LD_ADD) _AMO_LD_SIMPLE (amo_ldat_xor, uint64_t, "ldat", _AMO_LD_XOR) _AMO_LD_SIMPLE (amo_ldat_ior, uint64_t, "ldat", _AMO_LD_IOR) _AMO_LD_SIMPLE (amo_ldat_and, uint64_t, "ldat", _AMO_LD_AND) _AMO_LD_SIMPLE (amo_ldat_umax, uint64_t, "ldat", _AMO_LD_UMAX) _AMO_LD_SIMPLE (amo_ldat_umin, uint64_t, "ldat", _AMO_LD_UMIN) _AMO_LD_SIMPLE (amo_ldat_swap, uint64_t, "ldat", _AMO_LD_SWAP) _AMO_LD_SIMPLE (amo_ldat_sadd, int64_t, "ldat", _AMO_LD_ADD) _AMO_LD_SIMPLE (amo_ldat_smax, int64_t, "ldat", _AMO_LD_SMAX) _AMO_LD_SIMPLE (amo_ldat_smin, int64_t, "ldat", _AMO_LD_SMIN) _AMO_LD_SIMPLE (amo_ldat_sswap, int64_t, "ldat", _AMO_LD_SWAP) /* Enumeration of the STWAT/STDAT sub-opcodes. */ enum _AMO_ST { _AMO_ST_ADD = 0x00, /* Store Add. */ _AMO_ST_XOR = 0x01, /* Store Xor. */ _AMO_ST_IOR = 0x02, /* Store Ior. */ _AMO_ST_AND = 0x03, /* Store And. */ _AMO_ST_UMAX = 0x04, /* Store Unsigned Maximum. */ _AMO_ST_SMAX = 0x05, /* Store Signed Maximum. */ _AMO_ST_UMIN = 0x06, /* Store Unsigned Minimum. */ _AMO_ST_SMIN = 0x07, /* Store Signed Minimum. */ _AMO_ST_TWIN = 0x18 /* Store Twin. */ }; /* Implementation of the simple STWAT/STDAT operations that take one register and modify one word or double-word of memory. No value is returned. The STWAT/STDAT opcode requires the address to be a single register, and that points to a suitably aligned memory location. Asm volatile is used to prevent the optimizer from moving the operation. */ #define _AMO_ST_SIMPLE(NAME, TYPE, OPCODE, FC) \ static __inline__ void \ NAME (TYPE *_PTR, TYPE _VALUE) \ { \ __asm__ volatile (OPCODE " %1,%P0,%2" \ : "+Q" (_PTR[0]) \ : "r" (_VALUE), "n" (FC)); \ return; \ } _AMO_ST_SIMPLE (amo_stwat_add, uint32_t, "stwat", _AMO_ST_ADD) _AMO_ST_SIMPLE (amo_stwat_xor, uint32_t, "stwat", _AMO_ST_XOR) _AMO_ST_SIMPLE (amo_stwat_ior, uint32_t, "stwat", _AMO_ST_IOR) _AMO_ST_SIMPLE (amo_stwat_and, uint32_t, "stwat", _AMO_ST_AND) _AMO_ST_SIMPLE (amo_stwat_umax, uint32_t, "stwat", _AMO_ST_UMAX) _AMO_ST_SIMPLE (amo_stwat_umin, uint32_t, "stwat", _AMO_ST_UMIN) _AMO_ST_SIMPLE (amo_stwat_sadd, int32_t, "stwat", _AMO_ST_ADD) _AMO_ST_SIMPLE (amo_stwat_smax, int32_t, "stwat", _AMO_ST_SMAX) _AMO_ST_SIMPLE (amo_stwat_smin, int32_t, "stwat", _AMO_ST_SMIN) _AMO_ST_SIMPLE (amo_stdat_add, uint64_t, "stdat", _AMO_ST_ADD) _AMO_ST_SIMPLE (amo_stdat_xor, uint64_t, "stdat", _AMO_ST_XOR) _AMO_ST_SIMPLE (amo_stdat_ior, uint64_t, "stdat", _AMO_ST_IOR) _AMO_ST_SIMPLE (amo_stdat_and, uint64_t, "stdat", _AMO_ST_AND) _AMO_ST_SIMPLE (amo_stdat_umax, uint64_t, "stdat", _AMO_ST_UMAX) _AMO_ST_SIMPLE (amo_stdat_umin, uint64_t, "stdat", _AMO_ST_UMIN) _AMO_ST_SIMPLE (amo_stdat_sadd, int64_t, "stdat", _AMO_ST_ADD) _AMO_ST_SIMPLE (amo_stdat_smax, int64_t, "stdat", _AMO_ST_SMAX) _AMO_ST_SIMPLE (amo_stdat_smin, int64_t, "stdat", _AMO_ST_SMIN) #endif /* _ARCH_PWR9 && _ARCH_PPC64. */ #endif /* _POWERPC_AMO_H. */