zig/lib/include/htmxlintrin.h

/*===---- htmxlintrin.h - XL compiler HTM execution intrinsics-------------===*\
 *
 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 * See https://llvm.org/LICENSE.txt for license information.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 *
\*===----------------------------------------------------------------------===*/

#ifndef __HTMXLINTRIN_H
#define __HTMXLINTRIN_H

#ifndef __HTM__
#error "HTM instruction set not enabled"
#endif

#include <htmintrin.h>

#ifdef __powerpc__

#ifdef __cplusplus
extern "C" {
#endif

#define _TEXASR_PTR(TM_BUF) ((texasr_t *)((char *)(TM_BUF) + 0))
#define _TEXASRU_PTR(TM_BUF) ((texasru_t *)((char *)(TM_BUF) + 0))
#define _TEXASRL_PTR(TM_BUF) ((texasrl_t *)((char *)(TM_BUF) + 4))
#define _TFIAR_PTR(TM_BUF) ((tfiar_t *)((char *)(TM_BUF) + 8))

typedef char TM_buff_type[16];

/* This macro can be used to determine whether a transaction was successfully
   started from the __TM_begin() and __TM_simple_begin() intrinsic functions
   below.  */
#define _HTM_TBEGIN_STARTED     1

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_simple_begin (void)
{
  if (__builtin_expect (__builtin_tbegin (0), 1))
    return _HTM_TBEGIN_STARTED;
  return 0;
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_begin (void* const __TM_buff)
{
  *_TEXASRL_PTR (__TM_buff) = 0;
  if (__builtin_expect (__builtin_tbegin (0), 1))
    return _HTM_TBEGIN_STARTED;
#ifdef __powerpc64__
  *_TEXASR_PTR (__TM_buff) = __builtin_get_texasr ();
#else
  *_TEXASRU_PTR (__TM_buff) = __builtin_get_texasru ();
  *_TEXASRL_PTR (__TM_buff) = __builtin_get_texasr ();
#endif
  *_TFIAR_PTR (__TM_buff) = __builtin_get_tfiar ();
  return 0;
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_end (void)
{
  if (__builtin_expect (__builtin_tend (0), 1))
    return 1;
  return 0;
}

extern __inline void
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_abort (void)
{
  __builtin_tabort (0);
}

extern __inline void
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_named_abort (unsigned char const __code)
{
  __builtin_tabort (__code);
}

extern __inline void
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_resume (void)
{
  __builtin_tresume ();
}

extern __inline void
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_suspend (void)
{
  __builtin_tsuspend ();
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_user_abort (void* const __TM_buff)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);
  return _TEXASRU_ABORT (texasru);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_named_user_abort (void* const __TM_buff, unsigned char *__code)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);

  *__code = _TEXASRU_FAILURE_CODE (texasru);
  return _TEXASRU_ABORT (texasru);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_illegal (void* const __TM_buff)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);
  return _TEXASRU_DISALLOWED (texasru);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_footprint_exceeded (void* const __TM_buff)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);
  return _TEXASRU_FOOTPRINT_OVERFLOW (texasru);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_nesting_depth (void* const __TM_buff)
{
  texasrl_t texasrl;

  if (_HTM_STATE (__builtin_ttest ()) == _HTM_NONTRANSACTIONAL)
    {
      texasrl = *_TEXASRL_PTR (__TM_buff);
      if (!_TEXASR_FAILURE_SUMMARY (texasrl))
        texasrl = 0;
    }
  else
    texasrl = (texasrl_t) __builtin_get_texasr ();

  return _TEXASR_TRANSACTION_LEVEL (texasrl);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_nested_too_deep(void* const __TM_buff)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);
  return _TEXASRU_NESTING_OVERFLOW (texasru);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_conflict(void* const __TM_buff)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);
  /* Return TEXASR bits 11 (Self-Induced Conflict) through
     14 (Translation Invalidation Conflict).  */
  return (_TEXASRU_EXTRACT_BITS (texasru, 14, 4)) ? 1 : 0;
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_is_failure_persistent(void* const __TM_buff)
{
  texasru_t texasru = *_TEXASRU_PTR (__TM_buff);
  return _TEXASRU_FAILURE_PERSISTENT (texasru);
}

extern __inline long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_failure_address(void* const __TM_buff)
{
  return *_TFIAR_PTR (__TM_buff);
}

extern __inline long long
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
__TM_failure_code(void* const __TM_buff)
{
  return *_TEXASR_PTR (__TM_buff);
}

#ifdef __cplusplus
}
#endif

#endif /* __powerpc__ */

#ifdef __s390__

#include <stdint.h>

/* These intrinsics are being made available for compatibility with
   the IBM XL compiler.  For documentation please see the "z/OS XL
   C/C++ Programming Guide" publicly available on the web.  */

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_simple_begin ()
{
  return __builtin_tbegin_nofloat (0);
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_begin (void* const __tdb)
{
  return __builtin_tbegin_nofloat (__tdb);
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_end ()
{
  return __builtin_tend ();
}

static __inline void __attribute__((__always_inline__))
__TM_abort ()
{
  return __builtin_tabort (_HTM_FIRST_USER_ABORT_CODE);
}

static __inline void __attribute__((__always_inline__, __nodebug__))
__TM_named_abort (unsigned char const __code)
{
  return __builtin_tabort ((int)_HTM_FIRST_USER_ABORT_CODE + __code);
}

static __inline void __attribute__((__always_inline__, __nodebug__))
__TM_non_transactional_store (void* const __addr, long long const __value)
{
  __builtin_non_tx_store ((uint64_t*)__addr, (uint64_t)__value);
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_nesting_depth (void* const __tdb_ptr)
{
  int depth = __builtin_tx_nesting_depth ();
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  if (depth != 0)
    return depth;

  if (tdb->format != 1)
    return 0;
  return tdb->nesting_depth;
}

/* Transaction failure diagnostics */

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_user_abort (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  if (tdb->format != 1)
    return 0;

  return !!(tdb->abort_code >= _HTM_FIRST_USER_ABORT_CODE);
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_named_user_abort (void* const __tdb_ptr, unsigned char* __code)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  if (tdb->format != 1)
    return 0;

  if (tdb->abort_code >= _HTM_FIRST_USER_ABORT_CODE)
    {
      *__code = tdb->abort_code - _HTM_FIRST_USER_ABORT_CODE;
      return 1;
    }
  return 0;
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_illegal (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  return (tdb->format == 1
	  && (tdb->abort_code == 4 /* unfiltered program interruption */
	      || tdb->abort_code == 11 /* restricted instruction */));
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_footprint_exceeded (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  return (tdb->format == 1
	  && (tdb->abort_code == 7 /* fetch overflow */
	      || tdb->abort_code == 8 /* store overflow */));
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_nested_too_deep (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  return tdb->format == 1 && tdb->abort_code == 13; /* depth exceeded */
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_conflict (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  return (tdb->format == 1
	  && (tdb->abort_code == 9 /* fetch conflict */
	      || tdb->abort_code == 10 /* store conflict */));
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_is_failure_persistent (long const __result)
{
  return __result == _HTM_TBEGIN_PERSISTENT;
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_failure_address (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;
  return tdb->atia;
}

static __inline long __attribute__((__always_inline__, __nodebug__))
__TM_failure_code (void* const __tdb_ptr)
{
  struct __htm_tdb *tdb = (struct __htm_tdb*)__tdb_ptr;

  return tdb->abort_code;
}

#endif /* __s390__ */

#endif /* __HTMXLINTRIN_H  */