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1 #!/bin/sh
2 # genscripts.sh - generate the ld-emulation-target specific files
3 #
4 # Usage: genscripts.sh srcdir libdir host target target_alias \
5 # default_emulation native_lib_dirs this_emulation
6 #
7 # Sample usage:
8 # genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib sparc-sun-sunos4.1.3 \
9 # sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 "" sun3 sparc-sun-sunos4.1.3
10 # produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
11 #
12 # $FreeBSD$
13 #
14 # This is a cut-down version of the GNU script. Instead of jumping through
15 # hoops for all possible combinations of paths, just use the libdir
16 # argument in place of LIB_PATH.
17 #
18 # The exec_prefix, target_alias, use_sysroot, NATIVE_LIB_DIRS, TOOL_LIB, CUSTOMIZER_SCRIPT
19 # arguments are not used in this version.
20 #
21
22 srcdir=$1
23 libdir=$2
24 exec_prefix=$3
25 host=$4
26 target=$5
27 target_alias=$6
28 EMULATION_LIBPATH=$7
29 NATIVE_LIB_DIRS=$8
30 use_sysroot=$9
31 shift 9
32 EMULATION_NAME=$1
33 TOOL_LIB=$2
34 CUSTOMIZER_SCRIPT=$3
35
36 # Create the 'CUSTOMIZER_SCRIPT' knob to better sync this script with
37 # FSF BU ver 2.15 which allows for a more generic emulparams processing.
38 # To reduce the diff, I also include the ${EMULATION_NAME} parameter in uses
39 # of 'CUSTOMIZER_SCRIPT'.
40 CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
41
42 # Include the emulation-specific parameters:
43 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
44
45 if test -d ldscripts; then
46   true
47 else
48   mkdir ldscripts
49 fi
50
51 # Set some flags for the emultempl scripts.  USE_LIBPATH will
52 # be set for any libpath-using emulation.
53       USE_LIBPATH=yes
54
55 # Set the library search path, for libraries named by -lfoo.
56 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
57 # Otherwise, the default is set here.
58 #
59 # The format is the usual list of colon-separated directories.
60 # To force a logically empty LIB_PATH, do LIBPATH=":".
61
62 LIB_SEARCH_DIRS=`echo ${libdir} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
63 #2.13:  LIB_SEARCH_DIRS=`echo ${libdir} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
64
65 # Generate 5 or 6 script files from a master script template in
66 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 or 6
67 # script files is actually used depends on command line options given
68 # to ld.  (SCRIPT_NAME was set in the emulparams_file.)
69 #
70 # A .x script file is the default script.
71 # A .xr script is for linking without relocation (-r flag).
72 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
73 # A .xn script is for linking with -n flag (mix text and data on same page).
74 # A .xbn script is for linking with -N flag (mix text and data on same page).
75 # A .xs script is for generating a shared library with the --shared
76 #   flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
77 #   emulation parameters.
78 # A .xc script is for linking with -z combreloc; it is only generated if
79 #   $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
80 #   $SCRIPT_NAME is "elf".
81 # A .xsc script is for linking with --shared -z combreloc; it is generated
82 #   if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
83 #   $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
84 #   parameters too.
85
86 if [ "x$SCRIPT_NAME" = "xelf" ]; then
87   GENERATE_COMBRELOC_SCRIPT=yes
88 fi
89
90 #2.13:  SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}}
91 SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
92
93 # Determine DATA_ALIGNMENT for the 5 variants, using
94 # values specified in the emulparams/<emulation>.sh file or default.
95
96 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
97 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
98 DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
99 DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
100 DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
101
102 LD_FLAG=r
103 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
104 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
105 ( echo "/* Script for ld -r: link without relocation */"
106   . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
107   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
108 ) | sed -e '/^ *$/d;s/[         ]*$//' > ldscripts/${EMULATION_NAME}.xr
109
110 LD_FLAG=u
111 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
112 CONSTRUCTING=" "
113 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
114   . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
115   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
116 ) | sed -e '/^ *$/d;s/[         ]*$//' > ldscripts/${EMULATION_NAME}.xu
117
118 LD_FLAG=
119 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
120 RELOCATING=" "
121 ( echo "/* Default linker script, for normal executables */"
122   . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
123   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
124 ) | sed -e '/^ *$/d;s/[         ]*$//' > ldscripts/${EMULATION_NAME}.x
125
126 LD_FLAG=n
127 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
128 TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
129 ( echo "/* Script for -n: mix text and data on same page */"
130   . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
131   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
132 ) | sed -e '/^ *$/d;s/[         ]*$//' > ldscripts/${EMULATION_NAME}.xn
133
134 LD_FLAG=N
135 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
136 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
137   . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
138   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
139 ) | sed -e '/^ *$/d;s/[         ]*$//' > ldscripts/${EMULATION_NAME}.xbn
140
141 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
142   DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
143   LD_FLAG=c
144   COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
145   ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
146     . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
147     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
148   ) | sed -e '/^ *$/d;s/[       ]*$//' > ldscripts/${EMULATION_NAME}.xc
149   rm -f ${COMBRELOC}
150   COMBRELOC=
151 fi
152
153 if test -n "$GENERATE_SHLIB_SCRIPT"; then
154   LD_FLAG=shared
155   DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
156   CREATE_SHLIB=" "
157   # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
158   (
159     echo "/* Script for ld --shared: link shared library */"
160     . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
161     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
162   ) | sed -e '/^ *$/d;s/[       ]*$//' > ldscripts/${EMULATION_NAME}.xs
163   if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
164     LD_FLAG=cshared
165     DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
166     COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
167     ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
168       . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
169       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
170     ) | sed -e '/^ *$/d;s/[     ]*$//' > ldscripts/${EMULATION_NAME}.xsc
171     rm -f ${COMBRELOC}
172     COMBRELOC=
173   fi
174   unset CREATE_SHLIB
175 fi
176
177 if test -n "$GENERATE_PIE_SCRIPT"; then
178   LD_FLAG=pie
179   DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
180   CREATE_PIE=" "
181   # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
182   (
183     echo "/* Script for ld -pie: link position independent executable */"
184     . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
185     . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
186   ) | sed -e '/^ *$/d;s/[       ]*$//' > ldscripts/${EMULATION_NAME}.xd
187   if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
188     LD_FLAG=cpie
189     DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
190     COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
191     ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
192       . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
193       . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
194     ) | sed -e '/^ *$/d;s/[     ]*$//' > ldscripts/${EMULATION_NAME}.xdc
195     rm -f ${COMBRELOC}
196     COMBRELOC=
197   fi
198   unset CREATE_PIE
199 fi
200
201 case " $EMULATION_LIBPATH " in
202     *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
203 esac
204
205 # Generate e${EMULATION_NAME}.c.
206 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em