LXR qemu/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) \
  23dh_ctype(ret) HELPER(name) (void) DEF_HELPER_ATTR;
  24
  25#define DEF_HELPER_FLAGS_1(name, flags, ret, t1) \
  26dh_ctype(ret) HELPER(name) (dh_ctype(t1)) DEF_HELPER_ATTR;
  27
  28#define DEF_HELPER_FLAGS_2(name, flags, ret, t1, t2) \
  29dh_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) \
  32dh_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) \
  36dh_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) \
  40dh_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) \
  44dh_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) \
  49dh_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 */
  72