zig/lib/include/htmintrin.h

/*===---- htmintrin.h - Standard header for PowerPC HTM ---------------===*\
 *
 * 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 __HTMINTRIN_H
#define __HTMINTRIN_H

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

#ifdef __powerpc__

#include <stdint.h>

typedef uint64_t texasr_t;
typedef uint32_t texasru_t;
typedef uint32_t texasrl_t;
typedef uintptr_t tfiar_t;
typedef uintptr_t tfhar_t;

#define _HTM_STATE(CR0) ((CR0 >> 1) & 0x3)
#define _HTM_NONTRANSACTIONAL 0x0
#define _HTM_SUSPENDED        0x1
#define _HTM_TRANSACTIONAL    0x2

#define _TEXASR_EXTRACT_BITS(TEXASR,BITNUM,SIZE) \
  (((TEXASR) >> (63-(BITNUM))) & ((1<<(SIZE))-1))
#define _TEXASRU_EXTRACT_BITS(TEXASR,BITNUM,SIZE) \
  (((TEXASR) >> (31-(BITNUM))) & ((1<<(SIZE))-1))

#define _TEXASR_FAILURE_CODE(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 7, 8)
#define _TEXASRU_FAILURE_CODE(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 7, 8)

#define _TEXASR_FAILURE_PERSISTENT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 7, 1)
#define _TEXASRU_FAILURE_PERSISTENT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 7, 1)

#define _TEXASR_DISALLOWED(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 8, 1)
#define _TEXASRU_DISALLOWED(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 8, 1)

#define _TEXASR_NESTING_OVERFLOW(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 9, 1)
#define _TEXASRU_NESTING_OVERFLOW(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 9, 1)

#define _TEXASR_FOOTPRINT_OVERFLOW(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 10, 1)
#define _TEXASRU_FOOTPRINT_OVERFLOW(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 10, 1)

#define _TEXASR_SELF_INDUCED_CONFLICT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 11, 1)
#define _TEXASRU_SELF_INDUCED_CONFLICT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 11, 1)

#define _TEXASR_NON_TRANSACTIONAL_CONFLICT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 12, 1)
#define _TEXASRU_NON_TRANSACTIONAL_CONFLICT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 12, 1)

#define _TEXASR_TRANSACTION_CONFLICT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 13, 1)
#define _TEXASRU_TRANSACTION_CONFLICT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 13, 1)

#define _TEXASR_TRANSLATION_INVALIDATION_CONFLICT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 14, 1)
#define _TEXASRU_TRANSLATION_INVALIDATION_CONFLICT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 14, 1)

#define _TEXASR_IMPLEMENTAION_SPECIFIC(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 15, 1)
#define _TEXASRU_IMPLEMENTAION_SPECIFIC(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 15, 1)

#define _TEXASR_INSTRUCTION_FETCH_CONFLICT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 16, 1)
#define _TEXASRU_INSTRUCTION_FETCH_CONFLICT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 16, 1)

#define _TEXASR_ABORT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 31, 1)
#define _TEXASRU_ABORT(TEXASRU) \
  _TEXASRU_EXTRACT_BITS(TEXASRU, 31, 1)


#define _TEXASR_SUSPENDED(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 32, 1)

#define _TEXASR_PRIVILEGE(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 35, 2)

#define _TEXASR_FAILURE_SUMMARY(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 36, 1)

#define _TEXASR_TFIAR_EXACT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 37, 1)

#define _TEXASR_ROT(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 38, 1)

#define _TEXASR_TRANSACTION_LEVEL(TEXASR) \
  _TEXASR_EXTRACT_BITS(TEXASR, 63, 12)

#endif /* __powerpc */

#ifdef __s390__

/* Condition codes generated by tbegin  */
#define _HTM_TBEGIN_STARTED       0
#define _HTM_TBEGIN_INDETERMINATE 1
#define _HTM_TBEGIN_TRANSIENT     2
#define _HTM_TBEGIN_PERSISTENT    3

/* The abort codes below this threshold are reserved for machine use.  */
#define _HTM_FIRST_USER_ABORT_CODE 256

/* The transaction diagnostic block is it is defined in the Principles
   of Operation chapter 5-91.  */

struct __htm_tdb {
  unsigned char format;                /*   0 */
  unsigned char flags;
  unsigned char reserved1[4];
  unsigned short nesting_depth;
  unsigned long long abort_code;       /*   8 */
  unsigned long long conflict_token;   /*  16 */
  unsigned long long atia;             /*  24 */
  unsigned char eaid;                  /*  32 */
  unsigned char dxc;
  unsigned char reserved2[2];
  unsigned int program_int_id;
  unsigned long long exception_id;     /*  40 */
  unsigned long long bea;              /*  48 */
  unsigned char reserved3[72];         /*  56 */
  unsigned long long gprs[16];         /* 128 */
} __attribute__((__packed__, __aligned__ (8)));


/* Helper intrinsics to retry tbegin in case of transient failure.  */

static __inline int __attribute__((__always_inline__, __nodebug__))
__builtin_tbegin_retry_null (int __retry)
{
  int cc, i = 0;

  while ((cc = __builtin_tbegin(0)) == _HTM_TBEGIN_TRANSIENT
         && i++ < __retry)
    __builtin_tx_assist(i);

  return cc;
}

static __inline int __attribute__((__always_inline__, __nodebug__))
__builtin_tbegin_retry_tdb (void *__tdb, int __retry)
{
  int cc, i = 0;

  while ((cc = __builtin_tbegin(__tdb)) == _HTM_TBEGIN_TRANSIENT
         && i++ < __retry)
    __builtin_tx_assist(i);

  return cc;
}

#define __builtin_tbegin_retry(tdb, retry) \
  (__builtin_constant_p(tdb == 0) && tdb == 0 ? \
   __builtin_tbegin_retry_null(retry) : \
   __builtin_tbegin_retry_tdb(tdb, retry))

static __inline int __attribute__((__always_inline__, __nodebug__))
__builtin_tbegin_retry_nofloat_null (int __retry)
{
  int cc, i = 0;

  while ((cc = __builtin_tbegin_nofloat(0)) == _HTM_TBEGIN_TRANSIENT
         && i++ < __retry)
    __builtin_tx_assist(i);

  return cc;
}

static __inline int __attribute__((__always_inline__, __nodebug__))
__builtin_tbegin_retry_nofloat_tdb (void *__tdb, int __retry)
{
  int cc, i = 0;

  while ((cc = __builtin_tbegin_nofloat(__tdb)) == _HTM_TBEGIN_TRANSIENT
         && i++ < __retry)
    __builtin_tx_assist(i);

  return cc;
}

#define __builtin_tbegin_retry_nofloat(tdb, retry) \
  (__builtin_constant_p(tdb == 0) && tdb == 0 ? \
   __builtin_tbegin_retry_nofloat_null(retry) : \
   __builtin_tbegin_retry_nofloat_tdb(tdb, retry))

#endif /* __s390__ */

#endif /* __HTMINTRIN_H */