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1 /* Definitions of target machine for GNU compiler.
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2 m68k series COFF object files and debugging, version.
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3 Copyright (C) 1994, 1996, 1997, 2000, 2002, 2003, 2004, 2007
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4 Free Software Foundation, Inc.
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3, or (at your option)
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11 any later version.
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12
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13 GCC is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 /* This file is included after m68k.h by CPU COFF specific files. It
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23 is not a complete target itself. */
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24
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25 /* Used in m68k.c to include required support code. */
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26
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27 #define M68K_TARGET_COFF 1
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28
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29 /* Generate sdb debugging information. */
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30
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31 #define SDB_DEBUGGING_INFO 1
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32
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33 /* COFF symbols don't start with an underscore. */
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34
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35 #undef USER_LABEL_PREFIX
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36 #define USER_LABEL_PREFIX ""
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37
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38 /* Use a prefix for local labels, just to be on the save side. */
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39
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40 #undef LOCAL_LABEL_PREFIX
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41 #define LOCAL_LABEL_PREFIX "."
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42
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43 /* Use a register prefix to avoid clashes with external symbols (classic
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44 example: `extern char PC;' in termcap). */
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45
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46 #undef REGISTER_PREFIX
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47 #define REGISTER_PREFIX "%"
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48
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49 /* config/m68k.md has an explicit reference to the program counter,
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50 prefix this by the register prefix. */
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51
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52 #define ASM_RETURN_CASE_JUMP \
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53 do { \
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54 if (TARGET_COLDFIRE) \
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55 { \
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56 if (ADDRESS_REG_P (operands[0])) \
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57 return "jmp %%pc@(2,%0:l)"; \
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58 else \
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59 return "ext%.l %0\n\tjmp %%pc@(2,%0:l)"; \
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60 } \
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61 else \
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62 return "jmp %%pc@(2,%0:w)"; \
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63 } while (0)
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64
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65 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
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66
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67 /* If defined, a C expression whose value is a string containing the
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68 assembler operation to identify the following data as uninitialized global
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69 data. */
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70
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71 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
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72
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73 /* A C statement (sans semicolon) to output to the stdio stream
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74 FILE the assembler definition of uninitialized global DECL named
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75 NAME whose size is SIZE bytes and alignment is ALIGN bytes.
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76 Try to use asm_output_aligned_bss to implement this macro. */
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77
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78 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
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79 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
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80
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81 /* Switch into a generic section. */
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82 #undef TARGET_ASM_NAMED_SECTION
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83 #define TARGET_ASM_NAMED_SECTION m68k_coff_asm_named_section
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84
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85 /* Don't assume anything about startfiles. */
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86
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87 #undef STARTFILE_SPEC
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88 #define STARTFILE_SPEC ""
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