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Diffstat (limited to 'gcc/config/rs6000/amo.h')
| -rw-r--r-- | gcc/config/rs6000/amo.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/gcc/config/rs6000/amo.h b/gcc/config/rs6000/amo.h new file mode 100644 index 00000000000..d83e035da05 --- /dev/null +++ b/gcc/config/rs6000/amo.h @@ -0,0 +1,152 @@ +/* Power ISA 3.0 atomic memory operation include file. + Copyright (C) 2017 Free Software Foundation, Inc. + Contributed by Michael Meissner <meissner@linux.vnet.ibm.com>. + + 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 + <http://www.gnu.org/licenses/>. */ + +#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 <stdint.h> + +/* 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. */ |