elf:avoid interference between different ELFs generated by symtab

if defined CONFIG_EXAMPLES_ELF and CONFIG_EXAMPLES_MODLUE,
elf will generated BINDIR, so generated symtab will interference.
It supports inputting multiple specified files in mksymtab.sh to
avoid interference.

Signed-off-by: anjiahao <[email protected]>

Author: anjiahao1

examples/elf/main/Makefile

@@ -30,8 +30,34 @@ MAINSRC = elf_main.c
 SYMTABSRC = test_symtab.c
 SYMTABOBJ = $(SYMTABSRC:.c=$(OBJEXT))
 
+ELFNAME_BASE = errno hello
+ifneq ($(CONFIG_DISABLE_SIGNALS),y)
+  ELFNAME_BASE += signal
+endif
+
+ifeq ($(CONFIG_HAVE_CXX),y)
+  ELFNAME_BASE += hello++1 hello++2
+  ifeq ($(CONFIG_HAVE_CXXINITIALIZE),y)
+    ELFNAME_BASE += hello++3
+  endif
+  ifeq ($(CONFIG_EXAMPLES_ELF_CXX),y)
+    ELFNAME_BASE += hello++4 hello++5
+  endif
+endif
+ifeq ($(CONFIG_EXAMPLES_ELF_LONGJMP),y)
+  ELFNAME_BASE += longjmp
+endif
+ifneq ($(CONFIG_DISABLE_PTHREAD),y)
+  ELFNAME_BASE += pthread mutex
+endif
+ifneq ($(CONFIG_ARCH_ADDRENV),y)
+  ELFNAME_BASE += task
+endif
+
+ELFNAME = $(addprefix $(BINDIR)$(DELIM),$(ELFNAME_BASE))
+
 $(SYMTABSRC):
-	$(Q) $(APPDIR)$(DELIM)tools$(DELIM)mksymtab.sh $(BINDIR) g_elf >$@.tmp
+	$(Q) $(APPDIR)$(DELIM)tools$(DELIM)mksymtab.sh $(ELFNAME) g_elf >$@.tmp
 	$(Q) $(call TESTANDREPLACEFILE, $@.tmp, $@)
 
 

examples/module/main/Makefile

@@ -34,14 +34,13 @@ MAINSRC = module_main.c
 SYMTABSRC = mod_symtab.c
 SYMTABOBJ = $(SYMTABSRC:.c=$(OBJEXT))
 
-
+MODLUE_NAME = chardev
 ifneq ($(CONFIG_BUILD_FLAT),y)
   PASS1_SYMTAB = $(TOPDIR)/pass1/mod_symtab.c
-  MODLUE_NAME = chardev
 endif
 
 $(SYMTABSRC):
-	$(Q) $(APPDIR)$(DELIM)tools$(DELIM)mksymtab.sh $(BINDIR) g_mod >$@.tmp
+	$(Q) $(APPDIR)$(DELIM)tools$(DELIM)mksymtab.sh $(BINDIR)$(DELIM)$(MODLUE_NAME) g_mod >$@.tmp
 	$(Q) $(call TESTANDREPLACEFILE, $@.tmp, $@)
 
 

tools/mksymtab.sh

@@ -27,28 +27,43 @@ usage() {
   if [ $# -ne 0 ]; then
     echo "ERROR: $@"
   fi
-  echo -e "\nUsage: $0 <imagedirpath> [symtabprefix] [-a additionalsymbolspath]"
+  echo -e "\nUsage: $0 <imagedirpath1> [imagedirpath2 ... ] [symtabprefix] [-a additionalsymbolspath]"
   exit 1
 }
 
-# Check for the required directory path
+# Collect all image directory/file paths until we hit a non-path argument
+dirs=()
+prefix=""
+arg_count=0
 
-dir=$1
-if [ -z "$dir" ]; then
-  usage "Missing <imagedirpath>"
-fi
+while [ $# -gt 0 ]; do
+  # Check if this is an option flag
+  if [ "x${1:0:1}" = "x-" ]; then
+    break
+  fi
 
-# Get the symbol table prefix
+  arg_count=$((arg_count + 1))
 
-if [ "x${2:0:1}" != "x-" ]; then
-  prefix=$2
-  OPTIND=3
-else
-  OPTIND=2
-fi
+  # Always collect the argument (whether path exists or not)
+  # Only treat as prefix if it doesn't look like a path
+  if [[ "$1" =~ ^/ ]] || [ -e "$1" ]; then
+    # Looks like a path (starts with /) or exists
+    dirs+=("$1")
+    shift
+  else
+    # Doesn't look like a path, treat as prefix
+    prefix=$1
+    shift
+    break
+  fi
+done
 
-# Parse remaining arguments
+# Check we have at least one argument
+if [ $arg_count -eq 0 ]; then
+  usage "Missing <imagedirpath>"
+fi
 
+# Parse remaining arguments for options
 while getopts a: opt; do
   case $opt in
     a)
@@ -63,28 +78,60 @@ if [ $OPTIND != $(($# + 1)) ]; then
   usage "Arguments remaining: \"${@:$OPTIND}\""
 fi
 
+# Function to get exec list from a path (file or directory)
+get_exec_list() {
+  local path=$1
+  if [ -f "$path" ]; then
+    echo "$path"
+  elif [ -d "$path" ]; then
+    find "$path" -type f 2>/dev/null
+  fi
+}
+
 # Extract all of the undefined symbols from the ELF files and create a
 # list of sorted, unique undefined variable names.
 
-varlist=`find $dir -name *-thunk.S 2>/dev/null | xargs grep -h asciz | cut -f3 | sort | uniq`
+# First try to find thunk files from all directories
+varlist=""
+for dir in "${dirs[@]}"; do
+  if [ -d "$dir" ]; then
+    thunklist=`find $dir -name *-thunk.S 2>/dev/null | xargs grep -h asciz 2>/dev/null | cut -f3`
+    if [ !  -z "$thunklist" ]; then
+      varlist="${varlist} ${thunklist}"
+    fi
+  fi
+done
+
 if [ -z "$varlist" ]; then
-  execlist=`find $dir -type f 2>/dev/null`
-  if [ ! -z "$execlist" ]; then
+  # Collect all executable files from all paths
+  execlist=""
+  for dir in "${dirs[@]}"; do
+    # Only process if path exists
+    if [ -e "$dir" ]; then
+      pathlist=`get_exec_list "$dir"`
+      if [ ! -z "$pathlist" ]; then
+        execlist="${execlist} ${pathlist}"
+      fi
+    fi
+  done
 
-# Get all undefined symbol names
-    varlist=`nm $execlist 2>/dev/null | grep -F ' U ' | sed -e "s/^[ ]*//g" | cut -d' ' -f2 | sort | uniq`
+  if [ ! -z "$execlist" ]; then
+    # Get all undefined symbol names
+    varlist=$(nm $execlist 2>/dev/null | grep -F ' U ' | sed -e "s/^[ ]*//g" | cut -d' ' -f2)
 
-# Get all defined symbol names
-    deflist=`nm $execlist 2>/dev/null | grep -F -v -e ' U ' -e ':' | sed -e "s/^[0-9a-z]* //g" | cut -d' ' -f2 | sort | uniq`
+    # Get all defined symbol names
+    deflist=$(nm $execlist 2>/dev/null | grep -F -v -e ' U ' -e ':' | sed -e "s/^[0-9a-z]* //g" | cut -d' ' -f2)
 
-# Remove the intersection between them, and the remaining symbols are found in the main image
-    common=`echo "$varlist" | tr ' ' '\n' | grep -Fxf <(echo "$deflist" | tr ' ' '\n') | tr '\n' ' '`
-    if [ "x$common" != "x" ]; then
-      varlist=`echo $varlist | sed "s/$common//g"`
+    # Remove the intersection between them, and the remaining symbols are found in the main image
+    if [ ! -z "$varlist" ] && [ !  -z "$deflist" ]; then
+      varlist=$(echo "$varlist" | tr ' ' '\n' | sort -u | grep -vFxf <(echo "$deflist" | tr ' ' '\n' | sort -u) | tr '\n' ' ')
     fi
   fi
 fi
 
+# Sort and unique the varlist
+varlist=`echo "$varlist" | tr ' ' '\n' | sort | uniq | tr '\n' ' '`
+
 for addsym in ${addlist[@]}; do
   if [ -f $addsym ]; then
     varlist="${varlist}\n$(cat $addsym | grep -v "^,.*")"