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1 /* Definitions of target machine for gcc for Super-H using sh-superh-elf.
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2 Copyright (C) 2001-2018 Free Software Foundation, Inc.
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3
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4 This file is part of GNU CC.
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5
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6 GNU CC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GNU CC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20
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21 /* This header file is used when the vendor name is set to 'superh'.
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22 config.gcc already configured the compiler for SH4 only and switched
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23 the default endianness to little (although big endian is still available).
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24 This file configures the spec file to the default board configuration
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25 but in such a way that it can be overridden by a boardspecs file
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26 (using the -specs= option). This file is expected to disable the
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27 defaults and provide options --defsym _start and --defsym _stack
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28 which are required by the SuperH configuration of GNU ld.
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29
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30 This file is intended to override sh.h. */
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31
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32 #ifndef _SUPERH_H
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33 #define _SUPERH_H
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34 #endif
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35
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36
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37 /* Override the linker spec strings to use the new emulation
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38 The specstrings are concatenated as follows
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39 LINK_EMUL_PREFIX.(''|'32'|'64'|LINK_DEFAULT_CPU_EMUL).SUBTARGET_LINK_EMUL_SUFFIX
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40 */
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41 #undef LINK_EMUL_PREFIX
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42 #undef SUBTARGET_LINK_EMUL_SUFFIX
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43
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44 #define LINK_EMUL_PREFIX "superh"
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45 #define SUBTARGET_LINK_EMUL_SUFFIX ""
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46
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47 /* Add the SUBTARGET_LINK_SPEC to add the board and runtime support and
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48 change the endianness */
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49 #undef SUBTARGET_LINK_SPEC
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50 #if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
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51 #define SUBTARGET_LINK_SPEC "%(board_link) %(ldruntime) %{ml|!mb:-EL}%{mb:-EB}"
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52 #else
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53 #define SUBTARGET_LINK_SPEC "%(board_link) %(ldruntime) %{ml:-EL}%{mb|!ml:-EB}"
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54 #endif
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55
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56
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57 /* This is used by the link spec if the boardspecs file is not used
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58 (for whatever reason).
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59 If the boardspecs file overrides this then an alternative can be used. */
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60 #undef SUBTARGET_EXTRA_SPECS
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61 #define SUBTARGET_EXTRA_SPECS \
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62 { "board_link", "--defsym _start=0x1000 --defsym _stack=0x30000" }, \
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63 { "asruntime", "" }, \
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64 { "cppruntime", "-D__GDB_SIM__" }, \
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65 { "cc1runtime", "" }, \
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66 { "ldruntime", "" }, \
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67 { "libruntime", "-lc -lgloss" }
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68
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69
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70 /* Set the SUBTARGET_CPP_SPEC to define __EMBEDDED_CROSS__ which has an effect
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71 on newlib and provide the runtime support */
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72 #undef SUBTARGET_CPP_SPEC
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73 #define SUBTARGET_CPP_SPEC \
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74 "-D__EMBEDDED_CROSS__ %{m4-100*:-D__SH4_100__} %{m4-200*:-D__SH4_200__} %{m4-300*:-D__SH4_300__} %{m4-340:-D__SH4_340__} %{m4-400:-D__SH4_400__} %{m4-500:-D__SH4_500__} \
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75 %(cppruntime)"
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76
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77 /* Override the SUBTARGET_ASM_SPEC to add the runtime support */
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78 #undef SUBTARGET_ASM_SPEC
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79 #define SUBTARGET_ASM_SPEC "%{m4-100*|m4-200*:-isa=sh4} %{m4-400|m4-340:-isa=sh4-nommu-nofpu} %{m4-500:-isa=sh4-nofpu} %(asruntime)"
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80
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81 /* Override the SUBTARGET_ASM_RELAX_SPEC so it doesn't interfere with the
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82 runtime support by adding -isa=sh4 in the wrong place. */
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83 #undef SUBTARGET_ASM_RELAX_SPEC
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84 #define SUBTARGET_ASM_RELAX_SPEC "%{!m4-100*:%{!m4-200*:%{!m4-300*:%{!m4-340:%{!m4-400:%{!m4-500:-isa=sh4}}}}}}"
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85
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86 /* Create the CC1_SPEC to add the runtime support */
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87 #undef CC1_SPEC
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88 #define CC1_SPEC "%(cc1runtime)"
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89
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90 #undef CC1PLUS_SPEC
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91 #define CC1PLUS_SPEC "%(cc1runtime)"
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92
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93
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94 /* Override the LIB_SPEC to add the runtime support */
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95 #undef LIB_SPEC
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96 #define LIB_SPEC "%{!shared:%{!symbolic:%(libruntime) -lc}} %{pg:-lprofile -lc}"
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97
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98 /* Override STARTFILE_SPEC to add profiling and MMU support. */
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99 #undef STARTFILE_SPEC
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100 #define STARTFILE_SPEC \
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101 "%{!shared: %{!m4-400*:%{!m4-340*: %{pg:gcrt1-mmu.o%s}%{!pg:crt1-mmu.o%s}}}} \
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102 %{!shared: %{m4-340*|m4-400*: %{pg:gcrt1.o%s}%{!pg:crt1.o%s}}} \
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103 crti.o%s \
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104 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
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