1  /* 
       2  Permission is hereby granted, free of charge, to any person obtaining
       3  a copy of this software and associated documentation files (the
       4  ``Software''), to deal in the Software without restriction, including
       5  without limitation the rights to use, copy, modify, merge, publish,
       6  distribute, sublicense, and/or sell copies of the Software, and to
       7  permit persons to whom the Software is furnished to do so, subject to
       8  the following conditions:
       9  
      10  The above copyright notice and this permission notice shall be
      11  included in all copies or substantial portions of the Software.
      12  
      13  THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
      14  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      15  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
      16  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
      17  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
      18  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
      19  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
      20  
      21  #define AARCH64_RET_VOID	0
      22  #define AARCH64_RET_INT64	1
      23  #define AARCH64_RET_INT128	2
      24  
      25  #define AARCH64_RET_UNUSED3	3
      26  #define AARCH64_RET_UNUSED4	4
      27  #define AARCH64_RET_UNUSED5	5
      28  #define AARCH64_RET_UNUSED6	6
      29  #define AARCH64_RET_UNUSED7	7
      30  
      31  /* Note that FFI_TYPE_FLOAT == 2, _DOUBLE == 3, _LONGDOUBLE == 4,
      32     so _S4 through _Q1 are layed out as (TYPE * 4) + (4 - COUNT).  */
      33  #define AARCH64_RET_S4		8
      34  #define AARCH64_RET_S3		9
      35  #define AARCH64_RET_S2		10
      36  #define AARCH64_RET_S1		11
      37  
      38  #define AARCH64_RET_D4		12
      39  #define AARCH64_RET_D3		13
      40  #define AARCH64_RET_D2		14
      41  #define AARCH64_RET_D1		15
      42  
      43  #define AARCH64_RET_Q4		16
      44  #define AARCH64_RET_Q3		17
      45  #define AARCH64_RET_Q2		18
      46  #define AARCH64_RET_Q1		19
      47  
      48  /* Note that each of the sub-64-bit integers gets two entries.  */
      49  #define AARCH64_RET_UINT8	20
      50  #define AARCH64_RET_UINT16	22
      51  #define AARCH64_RET_UINT32	24
      52  
      53  #define AARCH64_RET_SINT8	26
      54  #define AARCH64_RET_SINT16	28
      55  #define AARCH64_RET_SINT32	30
      56  
      57  #define AARCH64_RET_MASK	31
      58  
      59  #define AARCH64_RET_IN_MEM	(1 << 5)
      60  #define AARCH64_RET_NEED_COPY	(1 << 6)
      61  
      62  #define AARCH64_FLAG_ARG_V_BIT	7
      63  #define AARCH64_FLAG_ARG_V	(1 << AARCH64_FLAG_ARG_V_BIT)
      64  #define AARCH64_FLAG_VARARG	(1 << 8)
      65  
      66  #define N_X_ARG_REG		8
      67  #define N_V_ARG_REG		8
      68  #define CALL_CONTEXT_SIZE	(N_V_ARG_REG * 16 + N_X_ARG_REG * 8)
      69  
      70  #if defined(FFI_EXEC_STATIC_TRAMP)
      71  /*
      72   * For the trampoline code table mapping, a mapping size of 16K is chosen to
      73   * cover the base page sizes of 4K and 16K.
      74   */
      75  #define AARCH64_TRAMP_MAP_SHIFT	14
      76  #define AARCH64_TRAMP_MAP_SIZE	(1 << AARCH64_TRAMP_MAP_SHIFT)
      77  #define AARCH64_TRAMP_SIZE	32
      78  
      79  #endif
      80  
      81  /* Helpers for writing assembly compatible with arm ptr auth */
      82  #ifdef LIBFFI_ASM
      83  
      84  #ifdef HAVE_PTRAUTH
      85  #define SIGN_LR pacibsp
      86  #define SIGN_LR_WITH_REG(x) pacib lr, x
      87  #define AUTH_LR_AND_RET retab
      88  #define AUTH_LR_WITH_REG(x) autib lr, x
      89  #define BRANCH_AND_LINK_TO_REG blraaz
      90  #define BRANCH_TO_REG braaz
      91  #else
      92  #define SIGN_LR
      93  #define SIGN_LR_WITH_REG(x)
      94  #define AUTH_LR_AND_RET ret
      95  #define AUTH_LR_WITH_REG(x)
      96  #define BRANCH_AND_LINK_TO_REG blr
      97  #define BRANCH_TO_REG br
      98  #endif
      99  
     100  #endif