include/gomp-constants.h

   1 /* Communication between GCC and libgomp.
   2
   3    Copyright (C) 2014-2018 Free Software Foundation, Inc.
   4
   5    Contributed by Mentor Embedded.
   6
   7    This file is part of the GNU Offloading and Multi Processing Library
   8    (libgomp).
   9
  10    Libgomp is free software; you can redistribute it and/or modify it
  11    under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3, or (at your option)
  13    any later version.
  14
  15    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
  16    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  17    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18    more details.
  19
  20    Under Section 7 of GPL version 3, you are granted additional
  21    permissions described in the GCC Runtime Library Exception, version
  22    3.1, as published by the Free Software Foundation.
  23
  24    You should have received a copy of the GNU General Public License and
  25    a copy of the GCC Runtime Library Exception along with this program;
  26    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  27    <http://www.gnu.org/licenses/>.  */
  28
  29 #ifndef GOMP_CONSTANTS_H
  30 #define GOMP_CONSTANTS_H 1
  31
  32 /* Memory mapping types.  */
  33
  34 /* One byte.  */
  35 #define GOMP_MAP_LAST                   (1 << 8)
  36
  37 #define GOMP_MAP_FLAG_TO                (1 << 0)
  38 #define GOMP_MAP_FLAG_FROM              (1 << 1)
  39 /* Special map kinds, enumerated starting here.  */
  40 #define GOMP_MAP_FLAG_SPECIAL_0         (1 << 2)
  41 #define GOMP_MAP_FLAG_SPECIAL_1         (1 << 3)
  42 #define GOMP_MAP_FLAG_SPECIAL_2         (1 << 4)
  43 #define GOMP_MAP_FLAG_SPECIAL           (GOMP_MAP_FLAG_SPECIAL_1 \
  44                                          | GOMP_MAP_FLAG_SPECIAL_0)
  45 /* Flag to force a specific behavior (or else, trigger a run-time error).  */
  46 #define GOMP_MAP_FLAG_FORCE             (1 << 7)
  47
  48 enum gomp_map_kind
  49   {
  50     /* If not already present, allocate.  */
  51     GOMP_MAP_ALLOC =                    0,
  52     /* ..., and copy to device.  */
  53     GOMP_MAP_TO =                       (GOMP_MAP_ALLOC | GOMP_MAP_FLAG_TO),
  54     /* ..., and copy from device.  */
  55     GOMP_MAP_FROM =                     (GOMP_MAP_ALLOC | GOMP_MAP_FLAG_FROM),
  56     /* ..., and copy to and from device.  */
  57     GOMP_MAP_TOFROM =                   (GOMP_MAP_TO | GOMP_MAP_FROM),
  58     /* The following kind is an internal only map kind, used for pointer based
  59        array sections.  OMP_CLAUSE_SIZE for these is not the pointer size,
  60        which is implicitly POINTER_SIZE_UNITS, but the bias.  */
  61     GOMP_MAP_POINTER =                  (GOMP_MAP_FLAG_SPECIAL_0 | 0),
  62     /* Also internal, behaves like GOMP_MAP_TO, but additionally any
  63        GOMP_MAP_POINTER records consecutive after it which have addresses
  64        falling into that range will not be ignored if GOMP_MAP_TO_PSET wasn't
  65        mapped already.  */
  66     GOMP_MAP_TO_PSET =                  (GOMP_MAP_FLAG_SPECIAL_0 | 1),
  67     /* Must already be present.  */
  68     GOMP_MAP_FORCE_PRESENT =            (GOMP_MAP_FLAG_SPECIAL_0 | 2),
  69     /* Deallocate a mapping, without copying from device.  */
  70     GOMP_MAP_DELETE =                   (GOMP_MAP_FLAG_SPECIAL_0 | 3),
  71     /* Is a device pointer.  OMP_CLAUSE_SIZE for these is unused; is implicitly
  72        POINTER_SIZE_UNITS.  */
  73     GOMP_MAP_FORCE_DEVICEPTR =          (GOMP_MAP_FLAG_SPECIAL_1 | 0),
  74     /* Do not map, copy bits for firstprivate instead.  */
  75     /* OpenACC device_resident.  */
  76     GOMP_MAP_DEVICE_RESIDENT =          (GOMP_MAP_FLAG_SPECIAL_1 | 1),
  77     /* OpenACC link.  */
  78     GOMP_MAP_LINK =                     (GOMP_MAP_FLAG_SPECIAL_1 | 2),
  79     /* Allocate.  */
  80     GOMP_MAP_FIRSTPRIVATE =             (GOMP_MAP_FLAG_SPECIAL | 0),
  81     /* Similarly, but store the value in the pointer rather than
  82        pointed by the pointer.  */
  83     GOMP_MAP_FIRSTPRIVATE_INT =         (GOMP_MAP_FLAG_SPECIAL | 1),
  84     /* Pointer translate host address into device address and copy that
  85        back to host.  */
  86     GOMP_MAP_USE_DEVICE_PTR =           (GOMP_MAP_FLAG_SPECIAL | 2),
  87     /* Allocate a zero length array section.  Prefer next non-zero length
  88        mapping over previous non-zero length mapping over zero length mapping
  89        at the address.  If not already mapped, do nothing (and pointer translate
  90        to NULL).  */
  91     GOMP_MAP_ZERO_LEN_ARRAY_SECTION =   (GOMP_MAP_FLAG_SPECIAL | 3),
  92     /* Allocate.  */
  93     GOMP_MAP_FORCE_ALLOC =              (GOMP_MAP_FLAG_FORCE | GOMP_MAP_ALLOC),
  94     /* ..., and copy to device.  */
  95     GOMP_MAP_FORCE_TO =                 (GOMP_MAP_FLAG_FORCE | GOMP_MAP_TO),
  96     /* ..., and copy from device.  */
  97     GOMP_MAP_FORCE_FROM =               (GOMP_MAP_FLAG_FORCE | GOMP_MAP_FROM),
  98     /* ..., and copy to and from device.  */
  99     GOMP_MAP_FORCE_TOFROM =             (GOMP_MAP_FLAG_FORCE | GOMP_MAP_TOFROM),
 100     /* If not already present, allocate.  And unconditionally copy to
 101        device.  */
 102     GOMP_MAP_ALWAYS_TO =                (GOMP_MAP_FLAG_SPECIAL_2 | GOMP_MAP_TO),
 103     /* If not already present, allocate.  And unconditionally copy from
 104        device.  */
 105     GOMP_MAP_ALWAYS_FROM =              (GOMP_MAP_FLAG_SPECIAL_2
 106                                          | GOMP_MAP_FROM),
 107     /* If not already present, allocate.  And unconditionally copy to and from
 108        device.  */
 109     GOMP_MAP_ALWAYS_TOFROM =            (GOMP_MAP_FLAG_SPECIAL_2
 110                                          | GOMP_MAP_TOFROM),
 111     /* Map a sparse struct; the address is the base of the structure, alignment
 112        it's required alignment, and size is the number of adjacent entries
 113        that belong to the struct.  The adjacent entries should be sorted by
 114        increasing address, so it is easy to determine lowest needed address
 115        (address of the first adjacent entry) and highest needed address
 116        (address of the last adjacent entry plus its size).  */
 117     GOMP_MAP_STRUCT =                   (GOMP_MAP_FLAG_SPECIAL_2
 118                                          | GOMP_MAP_FLAG_SPECIAL | 0),
 119     /* On a location of a pointer/reference that is assumed to be already mapped
 120        earlier, store the translated address of the preceeding mapping.
 121        No refcount is bumped by this, and the store is done unconditionally.  */
 122     GOMP_MAP_ALWAYS_POINTER =           (GOMP_MAP_FLAG_SPECIAL_2
 123                                          | GOMP_MAP_FLAG_SPECIAL | 1),
 124     /* Forced deallocation of zero length array section.  */
 125     GOMP_MAP_DELETE_ZERO_LEN_ARRAY_SECTION
 126       =                                 (GOMP_MAP_FLAG_SPECIAL_2
 127                                          | GOMP_MAP_FLAG_SPECIAL | 3),
 128     /* Decrement usage count and deallocate if zero.  */
 129     GOMP_MAP_RELEASE =                  (GOMP_MAP_FLAG_SPECIAL_2
 130                                          | GOMP_MAP_DELETE),
 131
 132     /* Internal to GCC, not used in libgomp.  */
 133     /* Do not map, but pointer assign a pointer instead.  */
 134     GOMP_MAP_FIRSTPRIVATE_POINTER =     (GOMP_MAP_LAST | 1),
 135     /* Do not map, but pointer assign a reference instead.  */
 136     GOMP_MAP_FIRSTPRIVATE_REFERENCE =   (GOMP_MAP_LAST | 2)
 137   };
 138
 139 #define GOMP_MAP_COPY_TO_P(X) \
 140   (!((X) & GOMP_MAP_FLAG_SPECIAL) \
 141    && ((X) & GOMP_MAP_FLAG_TO))
 142
 143 #define GOMP_MAP_COPY_FROM_P(X) \
 144   (!((X) & GOMP_MAP_FLAG_SPECIAL) \
 145    && ((X) & GOMP_MAP_FLAG_FROM))
 146
 147 #define GOMP_MAP_POINTER_P(X) \
 148   ((X) == GOMP_MAP_POINTER)
 149
 150 #define GOMP_MAP_ALWAYS_TO_P(X) \
 151   (((X) == GOMP_MAP_ALWAYS_TO) || ((X) == GOMP_MAP_ALWAYS_TOFROM))
 152
 153 #define GOMP_MAP_ALWAYS_FROM_P(X) \
 154   (((X) == GOMP_MAP_ALWAYS_FROM) || ((X) == GOMP_MAP_ALWAYS_TOFROM))
 155
 156 #define GOMP_MAP_ALWAYS_P(X) \
 157   (GOMP_MAP_ALWAYS_TO_P (X) || ((X) == GOMP_MAP_ALWAYS_FROM))
 158
 159
 160 /* Asynchronous behavior.  Keep in sync with
 161    libgomp/{openacc.h,openacc.f90,openacc_lib.h}:acc_async_t.  */
 162
 163 #define GOMP_ASYNC_NOVAL                -1
 164 #define GOMP_ASYNC_SYNC                 -2
 165
 166
 167 /* Device codes.  Keep in sync with
 168    libgomp/{openacc.h,openacc.f90,openacc_lib.h}:acc_device_t as well as
 169    libgomp/libgomp-plugin.h.  */
 170 #define GOMP_DEVICE_NONE                0
 171 #define GOMP_DEVICE_DEFAULT             1
 172 #define GOMP_DEVICE_HOST                2
 173 /* #define GOMP_DEVICE_HOST_NONSHM      3 removed.  */
 174 #define GOMP_DEVICE_NOT_HOST            4
 175 #define GOMP_DEVICE_NVIDIA_PTX          5
 176 #define GOMP_DEVICE_INTEL_MIC           6
 177 #define GOMP_DEVICE_HSA                 7
 178
 179 #define GOMP_DEVICE_ICV                 -1
 180 #define GOMP_DEVICE_HOST_FALLBACK       -2
 181
 182 /* GOMP_task/GOMP_taskloop* flags argument.  */
 183 #define GOMP_TASK_FLAG_UNTIED           (1 << 0)
 184 #define GOMP_TASK_FLAG_FINAL            (1 << 1)
 185 #define GOMP_TASK_FLAG_MERGEABLE        (1 << 2)
 186 #define GOMP_TASK_FLAG_DEPEND           (1 << 3)
 187 #define GOMP_TASK_FLAG_PRIORITY         (1 << 4)
 188 #define GOMP_TASK_FLAG_UP               (1 << 8)
 189 #define GOMP_TASK_FLAG_GRAINSIZE        (1 << 9)
 190 #define GOMP_TASK_FLAG_IF               (1 << 10)
 191 #define GOMP_TASK_FLAG_NOGROUP          (1 << 11)
 192
 193 /* GOMP_target{_ext,update_ext,enter_exit_data} flags argument.  */
 194 #define GOMP_TARGET_FLAG_NOWAIT         (1 << 0)
 195 #define GOMP_TARGET_FLAG_EXIT_DATA      (1 << 1)
 196 /* Internal to libgomp.  */
 197 #define GOMP_TARGET_FLAG_UPDATE         (1U << 31)
 198
 199 /* Versions of libgomp and device-specific plugins.  GOMP_VERSION
 200    should be incremented whenever an ABI-incompatible change is introduced
 201    to the plugin interface defined in libgomp/libgomp.h.  */
 202 #define GOMP_VERSION    1
 203 #define GOMP_VERSION_NVIDIA_PTX 1
 204 #define GOMP_VERSION_INTEL_MIC 0
 205 #define GOMP_VERSION_HSA 0
 206
 207 #define GOMP_VERSION_PACK(LIB, DEV) (((LIB) << 16) | (DEV))
 208 #define GOMP_VERSION_LIB(PACK) (((PACK) >> 16) & 0xffff)
 209 #define GOMP_VERSION_DEV(PACK) ((PACK) & 0xffff)
 210
 211 #define GOMP_DIM_GANG   0
 212 #define GOMP_DIM_WORKER 1
 213 #define GOMP_DIM_VECTOR 2
 214 #define GOMP_DIM_MAX    3
 215 #define GOMP_DIM_MASK(X) (1u << (X))
 216
 217 /* Varadic launch arguments.  End of list is marked by a zero.  */
 218 #define GOMP_LAUNCH_DIM         1  /* Launch dimensions, op = mask */
 219 #define GOMP_LAUNCH_ASYNC       2  /* Async, op = cst val if not MAX  */
 220 #define GOMP_LAUNCH_WAIT        3  /* Waits, op = num waits.  */
 221 #define GOMP_LAUNCH_CODE_SHIFT  28
 222 #define GOMP_LAUNCH_DEVICE_SHIFT 16
 223 #define GOMP_LAUNCH_OP_SHIFT 0
 224 #define GOMP_LAUNCH_PACK(CODE,DEVICE,OP)        \
 225   (((CODE) << GOMP_LAUNCH_CODE_SHIFT)           \
 226    | ((DEVICE) << GOMP_LAUNCH_DEVICE_SHIFT)     \
 227    | ((OP) << GOMP_LAUNCH_OP_SHIFT))
 228 #define GOMP_LAUNCH_CODE(X) (((X) >> GOMP_LAUNCH_CODE_SHIFT) & 0xf)
 229 #define GOMP_LAUNCH_DEVICE(X) (((X) >> GOMP_LAUNCH_DEVICE_SHIFT) & 0xfff)
 230 #define GOMP_LAUNCH_OP(X) (((X) >> GOMP_LAUNCH_OP_SHIFT) & 0xffff)
 231 #define GOMP_LAUNCH_OP_MAX 0xffff
 232
 233 /* Bitmask to apply in order to find out the intended device of a target
 234    argument.  */
 235 #define GOMP_TARGET_ARG_DEVICE_MASK             ((1 << 7) - 1)
 236 /* The target argument is significant for all devices.  */
 237 #define GOMP_TARGET_ARG_DEVICE_ALL              0
 238
 239 /* Flag set when the subsequent element in the device-specific argument
 240    values.  */
 241 #define GOMP_TARGET_ARG_SUBSEQUENT_PARAM        (1 << 7)
 242
 243 /* Bitmask to apply to a target argument to find out the value identifier.  */
 244 #define GOMP_TARGET_ARG_ID_MASK                 (((1 << 8) - 1) << 8)
 245 /* Target argument index of NUM_TEAMS.  */
 246 #define GOMP_TARGET_ARG_NUM_TEAMS               (1 << 8)
 247 /* Target argument index of THREAD_LIMIT.  */
 248 #define GOMP_TARGET_ARG_THREAD_LIMIT            (2 << 8)
 249
 250 /* If the value is directly embeded in target argument, it should be a 16-bit
 251    at most and shifted by this many bits.  */
 252 #define GOMP_TARGET_ARG_VALUE_SHIFT             16
 253
 254 /* HSA specific data structures.  */
 255
 256 /* Identifiers of device-specific target arguments.  */
 257 #define GOMP_TARGET_ARG_HSA_KERNEL_ATTRIBUTES   (1 << 8)
 258
 259 #endif