include/exec/helper-proto.h

   1 /* Helper file for declaring TCG helper functions.
   2    This one expands prototypes for the helper functions.  */
   3
   4 #ifndef HELPER_PROTO_H
   5 #define HELPER_PROTO_H
   6
   7 #include "exec/helper-head.h"
   8
   9 /*
  10  * Work around an issue with --enable-lto, in which GCC's ipa-split pass
  11  * decides to split out the noreturn code paths that raise an exception,
  12  * taking the __builtin_return_address() along into the new function,
  13  * where it no longer computes a value that returns to TCG generated code.
  14  * Despite the name, the noinline attribute affects splitter, so this
  15  * prevents the optimization in question.  Given that helpers should not
  16  * otherwise be called directly, this should have any other visible effect.
  17  *
  18  * See https://gitlab.com/qemu-project/qemu/-/issues/1454
  19  */
  20 #define DEF_HELPER_ATTR  __attribute__((noinline))
  21
  22 #define DEF_HELPER_FLAGS_0(name, flags, ret) \
  23 dh_ctype(ret) HELPER(name) (void) DEF_HELPER_ATTR;
  24
  25 #define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \
  26 dh_ctype(ret) HELPER(name) (dh_ctype(t1)) DEF_HELPER_ATTR;
  27
  28 #define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \
  29 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2)) DEF_HELPER_ATTR;
  30
  31 #define DEF_HELPER_FLAGS_3(name, flags, ret, t1, t2, t3) \
  32 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), \
  33                             dh_ctype(t3)) DEF_HELPER_ATTR;
  34
  35 #define DEF_HELPER_FLAGS_4(name, flags, ret, t1, t2, t3, t4) \
  36 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  37                             dh_ctype(t4)) DEF_HELPER_ATTR;
  38
  39 #define DEF_HELPER_FLAGS_5(name, flags, ret, t1, t2, t3, t4, t5) \
  40 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  41                             dh_ctype(t4), dh_ctype(t5)) DEF_HELPER_ATTR;
  42
  43 #define DEF_HELPER_FLAGS_6(name, flags, ret, t1, t2, t3, t4, t5, t6) \
  44 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  45                             dh_ctype(t4), dh_ctype(t5), \
  46                             dh_ctype(t6)) DEF_HELPER_ATTR;
  47
  48 #define DEF_HELPER_FLAGS_7(name, flags, ret, t1, t2, t3, t4, t5, t6, t7) \
  49 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
  50                             dh_ctype(t4), dh_ctype(t5), dh_ctype(t6), \
  51                             dh_ctype(t7)) DEF_HELPER_ATTR;
  52
  53 #define IN_HELPER_PROTO
  54
  55 #include "helper.h"
  56 #include "accel/tcg/tcg-runtime.h"
  57 #include "accel/tcg/plugin-helpers.h"
  58
  59 #undef IN_HELPER_PROTO
  60
  61 #undef DEF_HELPER_FLAGS_0
  62 #undef DEF_HELPER_FLAGS_1
  63 #undef DEF_HELPER_FLAGS_2
  64 #undef DEF_HELPER_FLAGS_3
  65 #undef DEF_HELPER_FLAGS_4
  66 #undef DEF_HELPER_FLAGS_5
  67 #undef DEF_HELPER_FLAGS_6
  68 #undef DEF_HELPER_FLAGS_7
  69 #undef DEF_HELPER_ATTR
  70
  71 #endif /* HELPER_PROTO_H */