1  /* Definitions of target machine for Intel MCU psABI.
       2     Copyright (C) 2015-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify
       7  it under the terms of the GNU General Public License as published by
       8  the Free Software Foundation; either version 3, or (at your option)
       9  any later version.
      10  
      11  GCC is distributed in the hope that it will be useful,
      12  but WITHOUT ANY WARRANTY; without even the implied warranty of
      13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14  GNU General Public License for more details.
      15  
      16  Under Section 7 of GPL version 3, you are granted additional
      17  permissions described in the GCC Runtime Library Exception, version
      18  3.1, as published by the Free Software Foundation.
      19  
      20  You should have received a copy of the GNU General Public License and
      21  a copy of the GCC Runtime Library Exception along with this program;
      22  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      23  <http://www.gnu.org/licenses/>.  */
      24  
      25  /* Intel MCU has no 80387.  Default to Intel MCU psABI.  */
      26  #undef TARGET_SUBTARGET_DEFAULT
      27  #define TARGET_SUBTARGET_DEFAULT MASK_IAMCU
      28  
      29  /* Output at beginning of assembler file.  */
      30  /* The .file command should always begin the output.  */
      31  #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
      32  
      33  #undef ASM_COMMENT_START
      34  #define ASM_COMMENT_START "#"
      35  
      36  #undef DEBUGGER_REGNO
      37  #define DEBUGGER_REGNO(n) \
      38    (TARGET_64BIT ? debugger64_register_map[n] : svr4_debugger_register_map[n])
      39  
      40  #undef ASM_SPEC
      41  #define ASM_SPEC "--32 -march=iamcu"
      42  
      43  #undef LINK_SPEC
      44  #define LINK_SPEC "-m elf_iamcu"
      45  
      46  #undef ENDFILE_SPEC
      47  #define ENDFILE_SPEC ""
      48  
      49  #undef STARTFILE_SPEC
      50  #define STARTFILE_SPEC "crt0.o%s"
      51  
      52  #undef LIB_SPEC
      53  #define LIB_SPEC "--start-group -lc -lgloss --end-group"
      54  
      55  /* A C statement (sans semicolon) to output to the stdio stream
      56     FILE the assembler definition of uninitialized global DECL named
      57     NAME whose size is SIZE bytes and alignment is ALIGN bytes.
      58     Try to use asm_output_aligned_bss to implement this macro.  */
      59  
      60  #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
      61    asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
      62  
      63  /* A C statement to output to the stdio stream FILE an assembler
      64     command to advance the location counter to a multiple of 1<<LOG
      65     bytes if it is within MAX_SKIP bytes.  */
      66  
      67  #define SUBALIGN_LOG 3
      68  
      69  /* Handle special EH pointer encodings.  Absolute, pc-relative, and
      70     indirect are handled automatically.  */
      71  #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
      72    do {									\
      73      if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_datarel)		\
      74        {									\
      75          fputs (ASM_LONG, FILE);						\
      76          assemble_name (FILE, XSTR (ADDR, 0));				\
      77  	fputs (((ENCODING) & DW_EH_PE_indirect ? "@GOT" : "@GOTOFF"), FILE); \
      78          goto DONE;							\
      79        }									\
      80    } while (0)
      81  
      82  #undef SIZE_TYPE
      83  #define SIZE_TYPE "unsigned int"
      84  
      85  #undef PTRDIFF_TYPE
      86  #define PTRDIFF_TYPE "int"
      87  
      88  #undef WCHAR_TYPE
      89  #define WCHAR_TYPE "long int"
      90  
      91  #undef WCHAR_TYPE_SIZE
      92  #define WCHAR_TYPE_SIZE BITS_PER_WORD
      93  
      94  /* Use int, instead of long int, for int32_t and uint32_t.  */
      95  #undef STDINT_LONG32
      96  #define STDINT_LONG32 0