--- /dev/null
+ /* 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. */
projects / gcc.git / commitdiff