Some arches (like the Blackfin architecture) have an ABI where all symbols

[uclinux-h8/elf2flt.git] / ld-elf2flt.in

diff --git a/ld-elf2flt.in b/ld-elf2flt.in
index 134ea45..3ca0c7b 100644 (file)
--- a/ld-elf2flt.in
+++ b/ld-elf2flt.in
@@ -16,6 +16,9 @@ LINKER="$0.real"            # the original renamed-linker
 ELF2FLT="`expr $0 : '\(.*\)ld'`elf2flt"
 NM="`expr $0 : '\(.*\)ld'`nm"
 TOOLDIR="`dirname $0`"      # let gcc find the tools for us
+OBJCOPY="`expr $0 : '\(.*\)ld'`objcopy"
+[ -f "$OBJCOPY" ] || OBJCOPY="$TOOLDIR/../../bin/@target_alias@-objcopy"
+OBJDUMP="`expr $OBJCOPY : '\(.*\)objcopy'`objdump"
 LDSCRIPTPATH="@binutils_ldscript_dir@" # and the scripts
 SHARED_ID=""
 NEWLDSCRIPT=""
@@ -49,7 +52,8 @@ then
 
                -move-rodata)
                          MOVDAT="y";;                 # Put rodata in ROM if possible
-                        
+               -s)       ;;                           # Ignore -s (strip)
+
                -shared-lib-id)
                          shift; SHARED_ID="$1";;      # Shared library ID
 
@@ -93,10 +97,11 @@ then
                ARG1="$ARG1 $FINAL_ONLY"
                NEWLDSCRIPT=`mktemp /tmp/flt-XXXXXX`
                SEDOP=" -e s/^R_RODAT// -e /^W_RODAT/d"
+               OBJCOPYOP=""
                if [ "$MOVDAT" ]
                then
                        $LINKER -r -d -o "$OFILE.elf2flt" $ARG1  || exit $?
-                       if [ "`@target_alias@-objdump -h "$OFILE.elf2flt" | \
+                       if [ "`$OBJDUMP -h "$OFILE.elf2flt" | \
                                        egrep -A1 '[.]rodata' | grep RELOC`" ]
                        then
                                echo "warning: .rodata section contains relocations"
@@ -117,15 +122,24 @@ then
                        then
                                # Non application modules enter via main not _start
                                #    SEDOP="$SEDOP -e 's/ENTRY (_start)/ENTRY (main)/'"
-                               SEDOP="$SEDOP -e s/\\(ENTRY.\\)(_start)/\1(lib_main)/"
+                               SEDOP="$SEDOP -e s/\\(ENTRY.\\)(@SYMBOL_PREFIX@_start)/\1(lib_main)/"
+                               OBJCOPYOP="--localize-hidden --weaken"
                        fi
 
                        # Provide the magic parameter that defines the library data segment pointer offset
+                       GOT_ADJ=4
                        case "@target_cpu@" in
+                           bfin)  GOT_OFFSET="_current_shared_library_p5_offset_" GOT_ADJ=1;;
                            h8300) GOT_OFFSET="__current_shared_library_er5_offset_";;
                            *)     GOT_OFFSET="_current_shared_library_a5_offset_";;
                        esac
-                       ARG1="$ARG1 -defsym $GOT_OFFSET=`expr ${SHARED_ID} '*' -4 - 4`"
+                       ARG1="$ARG1 -defsym $GOT_OFFSET=`expr ${SHARED_ID} '*' -${GOT_ADJ} - ${GOT_ADJ}`"
+               fi
+               if [ "@emit_relocs@" = "yes" ]
+               then
+                       SEDOP="$SEDOP -e s/^SINGLE_LINK://"
+               else
+                       SEDOP="$SEDOP -e /^SINGLE_LINK:/d"
                fi
                
                # provide a default linker script, we usually need one
@@ -168,6 +182,31 @@ then
                else
                        $ELF2FLT $FLTFLAGS -o "$OFILE" -r "$RFILE" || exit $?
                fi
+               if [ "$OBJCOPYOP" ]
+               then
+                if $OBJCOPY $OBJCOPYOP --help > /dev/null 2>&1
+                then
+                 $OBJCOPY $OBJCOPYOP "$OFILE.gdb" ||exit $?
+                else
+                 case " $OBJCOPYOP " in
+                 *" --localize-hidden "*)
+                   SYMS=`mktemp /tmp/flt-XXXXXX`
+                   $OBJDUMP --syms "$OFILE.gdb" > "$SYMS" ||exit $?
+                   sed -n 's/.*\(\.hidden\|\.internal\) \(.*\)/-L \2/p' < "$SYMS" > "$SYMS.hidden" ||exit $?
+                   if [ -s "$SYMS.hidden" ]
+                   then
+                    xargs ${VERBOSE:+-t} $OBJCOPY "$OFILE.gdb" < "$SYMS.hidden" ||exit $?
+                   fi
+                   rm -f "$SYMS" "$SYMS.hidden"
+                   ;;
+                 esac
+                 case " $OBJCOPYOP " in
+                 *" --weaken "*)
+                   $OBJCOPY --weaken "$OFILE.gdb" ||exit $?
+                   ;;
+                 esac
+                fi
+               fi
                [ "$RFILE" = "$OFILE.gdb" ] || rm -f "$RFILE"  # not needed for any reason
                rm -f "$NEWLDSCRIPT"
                exit 0