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1 # multilibs -*- mode:Makefile -*-
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2
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3 # An awk command to extract lines from the m68k-devices.def file that
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4 # match $1 and then print the string defined by $2. Leading and
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5 # trailing whitespace is removed. $1 & $2 can make use of
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6 # CPU -- the cpu identifier (has leading 'm'/'mcf')
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7 # FLAGS -- the cpu capability flags
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8 # CPU_NAME -- the cpu name (has no leading m/mcf)
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9 # MLIB -- the multilib cpu name (no leading m/mcf)
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10 # This is intended to be used as $(call M68K_AWK,predicate,string)
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11 M68K_AWK = $(strip $(shell $(AWK) 'BEGIN { FS="[ \t]*[,()][ \t]*"; ORS=" " }; \
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12 /^M68K_DEVICE/ { CPU=$$3; FLAGS=$$8; \
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13 CPU_NAME=substr($$2,2,length($$2)-2); \
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14 MLIB=substr($$5,2,length($$5)-2); \
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15 if ($1) print $2 }' $(srcdir)/config/m68k/m68k-devices.def))
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16
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17 # Add a multilib for each distinct architecture. M68K_MLIB_CPU, if defined,
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18 # adds additional restrictions.
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19 M68K_MLIB_CPUS := $(call M68K_AWK,\
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20 (CPU_NAME == MLIB) $(M68K_MLIB_CPU), \
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21 "m"MLIB)
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22
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23 # Make the default cpu the default multilib.
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24 M68K_MLIB_DEFAULT := $(call M68K_AWK, CPU == "$(target_cpu_default)", MLIB)
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25
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26 ifeq ($(filter m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS)),)
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27 $(error Error default cpu '$(target_cpu_default)' is not in multilib set '$(M68K_MLIB_CPUS)')
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28 endif
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29
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30 # Sed arguments that convert mcpu=* arguments into canonical forms.
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31 # We want to use the legacy m68* options instead of the new -mcpu=68*
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32 # options when compiling multilibs because the former are recognised
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33 # by older binutils.
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34 CANONICALIZE_OPTIONS = -e 's|mcpu=68|m68|g' -e 's|mcpu=cpu32|mcpu32|g'
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35
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36 MULTILIB_DIRNAMES := $(filter-out m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS))
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37 MULTILIB_OPTIONS := $(shell echo $(MULTILIB_DIRNAMES:m%=mcpu=%) \
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38 | sed -e 's| |/|g' $(CANONICALIZE_OPTIONS))
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39
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40 # Add subtarget specific options & dirs.
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41 MULTILIB_DIRNAMES += $(M68K_MLIB_DIRNAMES)
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42 MULTILIB_OPTIONS += $(M68K_MLIB_OPTIONS)
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43
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44 MULTILIB_MATCHES :=
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45
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46 ifneq ($(M68K_ARCH),cf)
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47 # Map the new-style options to the legacy m68k ones.
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48 MULTILIB_MATCHES += m68000=mcpu?68000 m68000=march?68000 m68000=mc68000 \
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49 m68000=m68302 \
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50 m68020=mcpu?68020 m68020=march?68020 m68020=mc68020 \
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51 m68030=mcpu?68030 m68030=march?68030 \
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52 m68040=mcpu?68040 m68040=march?68040 \
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53 m68060=mcpu?68060 m68060=march?68060 \
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54 mcpu32=mcpu?cpu32 mcpu32=march?cpu32 mcpu32=m68332
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55 endif
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56
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57 ifneq ($(M68K_ARCH),m68k)
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58 # Map the legacy ColdFire options to the new ones.
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59 MULTILIB_MATCHES += mcpu?5206=m5200 mcpu?5206e=m5206e mcpu?5208=m528x \
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60 mcpu?5307=m5300 mcpu?5307=m5307 \
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61 mcpu?5407=m5400 mcpu?5407=m5407 \
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62 mcpu?5475=mcfv4e
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63 # Map -march=* options to the representative -mcpu=* option.
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64 MULTILIB_MATCHES += mcpu?5206e=march?isaa mcpu?5208=march?isaaplus \
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65 mcpu?5407=march?isab
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66 endif
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67
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68 # Match non-representative -mcpu options to their representative option.
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69 MULTILIB_MATCHES += \
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70 $(call M68K_AWK, \
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71 (CPU_NAME != MLIB) $(M68K_MLIB_CPU), \
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72 (match(MLIB, "^68") || MLIB == "cpu32" \
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73 ? "m"MLIB"=mcpu?"CPU_NAME \
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74 : "mcpu?"MLIB"=mcpu?"CPU_NAME))
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75
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76 MULTILIB_EXCEPTIONS :=
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77
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78 ifeq ($(firstword $(M68K_MLIB_OPTIONS)),msoft-float)
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79 # Exclude soft-float multilibs for targets that default to soft-float anyway.
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80 MULTILIB_EXCEPTIONS += $(call M68K_AWK,\
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81 (CPU_NAME == MLIB) $(M68K_MLIB_CPU) \
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82 && (((CPU ~ "^mcf") && !match(FLAGS, "FL_CF_FPU")) \
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83 || CPU == "cpu32" \
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84 || CPU == "m68000"), \
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85 "mcpu="MLIB"/msoft-float*")
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86 endif
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87
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88 # Remove the default CPU from the explicit exceptions.
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89 MULTILIB_EXCEPTIONS := \
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90 $(patsubst mcpu=$(M68K_MLIB_DEFAULT)/%,%,$(MULTILIB_EXCEPTIONS))
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91
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92 # Convert all options to canonical form.
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93 MULTILIB_EXCEPTIONS := $(shell echo $(MULTILIB_EXCEPTIONS) | \
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94 sed $(CANONICALIZE_OPTIONS))
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95
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96 LIBGCC = stmp-multilib
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97 INSTALL_LIBGCC = install-multilib
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