1 /* Definitions of target machine for Intel MCU psABI. 2 Copyright (C) 2015-2019 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 DBX_REGISTER_NUMBER 37 #define DBX_REGISTER_NUMBER(n) \ 38 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_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 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ 70 do { \ 71 if ((LOG) != 0) { \ 72 if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \ 73 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 74 else \ 75 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 76 } \ 77 } while (0) 78 79 /* Handle special EH pointer encodings. Absolute, pc-relative, and 80 indirect are handled automatically. */ 81 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \ 82 do { \ 83 if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_datarel) \ 84 { \ 85 fputs (ASM_LONG, FILE); \ 86 assemble_name (FILE, XSTR (ADDR, 0)); \ 87 fputs (((ENCODING) & DW_EH_PE_indirect ? "@GOT" : "@GOTOFF"), FILE); \ 88 goto DONE; \ 89 } \ 90 } while (0) 91 92 #undef SIZE_TYPE 93 #define SIZE_TYPE "unsigned int" 94 95 #undef PTRDIFF_TYPE 96 #define PTRDIFF_TYPE "int" 97 98 #undef WCHAR_TYPE 99 #define WCHAR_TYPE "long int" 100 101 #undef WCHAR_TYPE_SIZE 102 #define WCHAR_TYPE_SIZE BITS_PER_WORD 103 104 /* Use int, instead of long int, for int32_t and uint32_t. */ 105 #undef STDINT_LONG32 106 #define STDINT_LONG32 0 107