include/exec/helper-proto.h.inc

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Helper file for declaring TCG helper functions.
   4  * This one expands prototypes for the helper functions.
   5  * Define HELPER_H for the header file to be expanded.
   6  */
   7
   8 #include "exec/helper-head.h"
   9
  10 /*
  11  * Work around an issue with --enable-lto, in which GCC's ipa-split pass
  12  * decides to split out the noreturn code paths that raise an exception,
  13  * taking the __builtin_return_address() along into the new function,
  14  * where it no longer computes a value that returns to TCG generated code.
  15  * Despite the name, the noinline attribute affects splitter, so this
  16  * prevents the optimization in question.  Given that helpers should not
  17  * otherwise be called directly, this should not have any other visible effect.
  18  *
  19  * See https://gitlab.com/qemu-project/qemu/-/issues/1454
  20  */
  21 #define DEF_HELPER_ATTR  __attribute__((noinline))
  22
  23 #define DEF_HELPER_FLAGS_0(name, flags, ret) \
  24 dh_ctype(ret) HELPER(name) (void) DEF_HELPER_ATTR;
  25
  26 #define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \
  27 dh_ctype(ret) HELPER(name) (dh_ctype(t1)) DEF_HELPER_ATTR;
  28
  29 #define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \
  30 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2)) DEF_HELPER_ATTR;
  31
  32 #define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \
  33 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), \
  34                             dh_ctype(t3)) DEF_HELPER_ATTR;
  35
  36 #define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \
  37 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  38                             dh_ctype(t4)) DEF_HELPER_ATTR;
  39
  40 #define DEF_HELPER_FLAGS_5(name, flags, ret, t1, t2, t3, t4, t5) \
  41 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  42                             dh_ctype(t4), dh_ctype(t5)) DEF_HELPER_ATTR;
  43
  44 #define DEF_HELPER_FLAGS_6(name, flags, ret, t1, t2, t3, t4, t5, t6) \
  45 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  46                             dh_ctype(t4), dh_ctype(t5), \
  47                             dh_ctype(t6)) DEF_HELPER_ATTR;
  48
  49 #define DEF_HELPER_FLAGS_7(name, flags, ret, t1, t2, t3, t4, t5, t6, t7) \
  50 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  51                             dh_ctype(t4), dh_ctype(t5), dh_ctype(t6), \
  52                             dh_ctype(t7)) DEF_HELPER_ATTR;
  53
  54 #define IN_HELPER_PROTO
  55
  56 #include HELPER_H
  57
  58 #undef IN_HELPER_PROTO
  59
  60 #undef DEF_HELPER_FLAGS_0
  61 #undef DEF_HELPER_FLAGS_1
  62 #undef DEF_HELPER_FLAGS_2
  63 #undef DEF_HELPER_FLAGS_3
  64 #undef DEF_HELPER_FLAGS_4
  65 #undef DEF_HELPER_FLAGS_5
  66 #undef DEF_HELPER_FLAGS_6
  67 #undef DEF_HELPER_FLAGS_7
  68 #undef DEF_HELPER_ATTR