genscripts.sh revision 52939 
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: head/gnu/usr.bin/binutils/ld/genscripts.sh 52939 1999-11-06 22:40:15Z jb $
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 host, target and target_alias arguments are not used in this version.
19#
20
21srcdir=$1
22libdir=$2
23host=$3
24target=$4
25target_alias=$5
26DEFAULT_EMULATION=$6
27NATIVE_LIB_DIRS=$7
28EMULATION_NAME=$8
29
30# Include the emulation-specific parameters:
31. ${srcdir}/emulparams/${EMULATION_NAME}.sh
32
33if test -d ldscripts; then
34  true
35else
36  mkdir ldscripts
37fi
38
39LIB_SEARCH_DIRS=`echo ${libdir} | tr ':' ' ' | sed -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\1);/g'`
40
41# Generate 5 or 6 script files from a master script template in
42# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 or 6
43# script files is actually used depends on command line options given
44# to ld.  (SCRIPT_NAME was set in the emulparams_file.)
45#
46# A .x script file is the default script.
47# A .xr script is for linking without relocation (-r flag).
48# A .xu script is like .xr, but *do* create constructors (-Ur flag).
49# A .xn script is for linking with -n flag (mix text and data on same page).
50# A .xbn script is for linking with -N flag (mix text and data on same page).
51# A .xs script is for generating a shared library with the --shared
52#   flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
53#   emulation parameters.
54
55SEGMENT_SIZE=${SEGMENT_SIZE-${TARGET_PAGE_SIZE}}
56
57# Determine DATA_ALIGNMENT for the 5 variants, using
58# values specified in the emulparams/<emulation>.sh file or default.
59
60DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
61DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
62DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
63DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
64DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
65
66LD_FLAG=r
67DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
68DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
69(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
70  ldscripts/${EMULATION_NAME}.xr
71
72LD_FLAG=u
73DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
74CONSTRUCTING=" "
75(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
76  ldscripts/${EMULATION_NAME}.xu
77
78LD_FLAG=
79DATA_ALIGNMENT=${DATA_ALIGNMENT_}
80RELOCATING=" "
81(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
82  ldscripts/${EMULATION_NAME}.x
83
84LD_FLAG=n
85DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
86TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
87(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
88  ldscripts/${EMULATION_NAME}.xn
89
90LD_FLAG=N
91DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
92(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
93  ldscripts/${EMULATION_NAME}.xbn
94
95if test -n "$GENERATE_SHLIB_SCRIPT"; then
96  LD_FLAG=shared
97  DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
98  CREATE_SHLIB=" "
99  # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
100  (. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc) | sed -e '/^ *$/d' > \
101    ldscripts/${EMULATION_NAME}.xs
102fi
103
104test "$DEFAULT_EMULATION" = "$EMULATION_NAME" && COMPILE_IN=true
105
106# Generate e${EMULATION_NAME}.c.
107. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
108