FreeCalypso > hg > freecalypso-tools

annotate toolchain/t-arm-elf @ 619:f82551c77e58

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libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents e7502631a0f9
children
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1 # This is a modified version of the gcc/config/arm/t-arm-elf file
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2 # from gcc-4.5.4. It has been modified by Spacefalcon the Outlaw
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3 # for the FreeCalypso project; the changes are in the multilib
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4 # configuration:
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5 #
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6 # a) The fpu multilib has been commented out
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7 # b) The -mthumb-interwork multilib has been uncommented
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8
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9 # Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
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10 # 2008 Free Software Foundation, Inc.
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11 #
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12 # This file is part of GCC.
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13 #
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14 # GCC is free software; you can redistribute it and/or modify
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15 # it under the terms of the GNU General Public License as published by
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16 # the Free Software Foundation; either version 3, or (at your option)
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17 # any later version.
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18 #
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19 # GCC is distributed in the hope that it will be useful,
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20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 # GNU General Public License for more details.
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23 #
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24 # You should have received a copy of the GNU General Public License
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25 # along with GCC; see the file COPYING3. If not see
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26 # <http://www.gnu.org/licenses/>.
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27
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28 # For most CPUs we have an assembly soft-float implementations.
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29 # However this is not true for ARMv6M. Here we want to use the soft-fp C
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30 # implementation. The soft-fp code is only build for ARMv6M. This pulls
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31 # in the asm implementation for other CPUs.
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32 LIB1ASMFUNCS += _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func \
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33 _call_via_rX _interwork_call_via_rX \
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34 _lshrdi3 _ashrdi3 _ashldi3 \
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35 _arm_negdf2 _arm_addsubdf3 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
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36 _arm_fixdfsi _arm_fixunsdfsi \
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37 _arm_truncdfsf2 _arm_negsf2 _arm_addsubsf3 _arm_muldivsf3 \
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38 _arm_cmpsf2 _arm_unordsf2 _arm_fixsfsi _arm_fixunssfsi \
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39 _arm_floatdidf _arm_floatdisf _arm_floatundidf _arm_floatundisf \
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40 _clzsi2 _clzdi2
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41
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42 MULTILIB_OPTIONS = marm/mthumb
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43 MULTILIB_DIRNAMES = arm thumb
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44 MULTILIB_EXCEPTIONS =
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45 MULTILIB_MATCHES =
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46
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47 #MULTILIB_OPTIONS += march=armv7
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48 #MULTILIB_DIRNAMES += thumb2
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49 #MULTILIB_EXCEPTIONS += march=armv7* marm/*march=armv7*
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50 #MULTILIB_MATCHES += march?armv7=march?armv7-a
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51 #MULTILIB_MATCHES += march?armv7=march?armv7-r
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52 #MULTILIB_MATCHES += march?armv7=march?armv7-m
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53 #MULTILIB_MATCHES += march?armv7=mcpu?cortex-a8
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54 #MULTILIB_MATCHES += march?armv7=mcpu?cortex-r4
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55 #MULTILIB_MATCHES += march?armv7=mcpu?cortex-m3
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56
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57 # Not quite true. We can support hard-vfp calling in Thumb2, but how do we
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58 # express that here? Also, we really need architecture v5e or later
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59 # (mcrr etc).
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60 # MULTILIB_OPTIONS += mfloat-abi=hard
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61 # MULTILIB_DIRNAMES += fpu
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62 # MULTILIB_EXCEPTIONS += *mthumb/*mfloat-abi=hard*
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63
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64 # MULTILIB_OPTIONS += mcpu=ep9312
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65 # MULTILIB_DIRNAMES += ep9312
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66 # MULTILIB_EXCEPTIONS += *mthumb/*mcpu=ep9312*
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67 #
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68 # MULTILIB_OPTIONS += mlittle-endian/mbig-endian
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69 # MULTILIB_DIRNAMES += le be
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70 # MULTILIB_MATCHES += mbig-endian=mbe mlittle-endian=mle
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71 #
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72 # MULTILIB_OPTIONS += mhard-float/msoft-float
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73 # MULTILIB_DIRNAMES += fpu soft
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74 # MULTILIB_EXCEPTIONS += *mthumb/*mhard-float*
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75 #
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76 MULTILIB_OPTIONS += mno-thumb-interwork/mthumb-interwork
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77 MULTILIB_DIRNAMES += normal interwork
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78 #
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79 # MULTILIB_OPTIONS += fno-leading-underscore/fleading-underscore
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80 # MULTILIB_DIRNAMES += elf under
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81 #
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82 # MULTILIB_OPTIONS += mcpu=arm7
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83 # MULTILIB_DIRNAMES += nofmult
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84 # MULTILIB_EXCEPTIONS += *mthumb*/*mcpu=arm7*
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85 # # Note: the multilib_exceptions matches both -mthumb and
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86 # # -mthumb-interwork
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87 # #
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88 # # We have to match all the arm cpu variants which do not have the
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89 # # multiply instruction and treat them as if the user had specified
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90 # # -mcpu=arm7. Note that in the following the ? is interpreted as
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91 # # an = for the purposes of matching command line options.
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92 # # FIXME: There ought to be a better way to do this.
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93 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm7d
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94 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm7di
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95 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm70
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96 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm700
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97 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm700i
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98 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm710
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99 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm710c
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100 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm7100
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101 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm7500
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102 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm7500fe
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103 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm6
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104 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm60
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105 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm600
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106 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm610
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107 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm620
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108
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109 EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o crti.o crtn.o
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110
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111 # If EXTRA_MULTILIB_PARTS is not defined above then define EXTRA_PARTS here
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112 # EXTRA_PARTS = crtbegin.o crtend.o crti.o crtn.o
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113
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114 LIBGCC = stmp-multilib
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115 INSTALL_LIBGCC = install-multilib
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116
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117 # Currently there is a bug somewhere in GCC's alias analysis
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118 # or scheduling code that is breaking _fpmul_parts in fp-bit.c.
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119 # Disabling function inlining is a workaround for this problem.
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120 TARGET_LIBGCC2_CFLAGS = -fno-inline
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121
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122 # Assemble startup files.
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123 $(T)crti.o: $(srcdir)/config/arm/crti.asm $(GCC_PASSES)
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124 $(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
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125 -c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/arm/crti.asm
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126
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127 $(T)crtn.o: $(srcdir)/config/arm/crtn.asm $(GCC_PASSES)
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128 $(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
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129 -c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/arm/crtn.asm
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130