Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the

non-i386, non-unix, and generatable files have been trimmed, but can easily
be added in later if needed.

gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's
handy to have both available for reference for such little cost.

The freebsd-specific changes will then be committed, and once the dust has
settled, the bmakefiles will be committed to use this code.

1 files changed, 227 insertions, 0 deletions

diff --git a/contrib/gcc/listing b/contrib/gcc/listing
new file mode 100755
index 000000000000..08abb1db4cec
--- /dev/null
+++ b/contrib/gcc/listing
@@ -0,0 +1,227 @@
+#!/bin/sh -f
+# Generate a source code listing for C or C++ code with assembler code. The
+# listing is always written to stdout.
+# Author: Igor Metz <metz@iam.unibe.ch>
+
+# Revision 1.4  94/08/26  13:58:27  coxs <coxs@dg-rtp.dg.com>
+# lister now guesses how to should be configured. Added elf and coff support.
+#
+# Revision 1.3  89/12/18  13:58:27  metz
+# lister must now be configured before it can be used. This is done in the
+# /bin/sh part of the code.
+# 
+# 
+# Revision 1.2  89/08/16  17:35:02  metz
+# Support for SPARC added.
+# 
+# Revision 1.1  89/08/16  16:49:22  metz
+# Initial revision
+# 
+
+# Requires: gawk (may be it works also with nawk)
+
+# usage:  lister filename [compiler-options]
+
+# Method:
+# compile the source with -g option to assembler code, then merge the
+# generated assembler code with the source code. Compiler options
+# can be supplied on the command line (for example -O)
+
+# To install lister, assign one of the supported values to the variable MYSYS:
+# mc68020  for Motorola 68020 (Sun-3, ..)
+# mc68030  for Motorola 68030 (Sun-3, ..)
+# sparc    for SPARC (SUN-4, ..)
+# i386     for i386 (Sun i386, ...)
+# i386-linux for i386 (Linux, ...)
+
+# Guess what kind of objects we are creating and thus what type of assembler
+# symbols to look for
+
+ex /tmp/$$.c <<END >/dev/null
+a
+main (){}
+.
+w
+q
+END
+WD=`pwd`
+cd /tmp
+gcc -c $$.c
+case "`file $$.o`" in 
+*ELF*) MYSYS=elf ;;
+*COFF*|*BCS*) MYSYS=coff ;;
+*mc68k*|*M68000*) MYSYS=mc68030 ;;
+*SPARC*) MYSYS=sparc ;;
+*386*) MYSYS=i386 ;;
+esac
+rm $$.c $$.o
+cd $WD
+
+# uncomment the line you need if the above guesses incorrectly:
+# MYSYS=mc68020
+# MYSYS=mc68030
+# MYSYS=sparc
+# MYSYS=i386
+# MYSYS=i386-linux
+# MYSYS=`mach`  # this will work on Suns with SunOS > 4.0.0
+# MYSYS=elf
+# MYSYS=coff
+
+WHOAMI=$0
+if [ $# -gt 0 ] ; then
+FILENAME=$1
+shift
+fi
+
+exec gawk -v whoami=$WHOAMI -vsys=$MYSYS -voptions="$*" '
+# commandline arguments:
+#  ARGV[0] = "gawk"
+#  ARGV[1] = processid
+#  ARGV[2] = filename
+BEGIN {
+  if (ARGC != 3) {
+    usage()
+    exit 1
+  }
+
+  # Declaration of global variables
+  c_filename = ""
+  asm_filename = ""
+  cmdline = ""
+  asm_code = ""
+  c_code = ""
+  c_lineno = 0
+  oldlineno = 0
+  newlineno = 0
+  ignore_stabd = 0
+  num_of_fields = 0
+
+  # check processor architecture and set sourcecode line_hint accordingly
+  if (sys == "sparc" || sys == "i386") {
+    line_hint = "^[ \t]*\.stabn.*"
+    line_field = 3;
+    line_delimiter = ",";
+    line_offset = 0;
+  }
+  else if (sys == "mc68020" || sys == "mc68030" || sys == "i386-linux") {
+    line_hint = "^[ \t]*\.stabd.*"
+    line_field = 3;
+    line_delimiter = ",";
+    line_offset = 0;
+  }
+  else if (sys == "elf") {
+    line_hint = "section.*\.line"
+    line_field = 3;
+    line_delimiter = "\t";
+    line_offset = 0;
+  }
+  else if (sys == "coff") {
+    line_hint = "^[ \t]*ln"
+    line_field = 3;
+    line_delimiter = "\t";
+  }
+  else {
+    error("Processor type " sys " is not supported yet, sorry")
+  }
+
+  parse_cmdline()
+
+  printf("compiling %s to asm code\n", c_filename ) > "/dev/stderr"
+
+  if (system(cmdline) != 0 ) {
+    error("Compilation of " c_filename " failed")
+  }
+
+  printf("generating listing\n") > "/dev/stderr"
+
+
+  while ( getline asm_code < asm_filename > 0 ) {
+    if ( (ignore_stabd==0) && (asm_code ~ line_hint)) {
+      while ( sys == "elf" && (asm_code !~ "word" && asm_code !~ "byte") && 
+        getline asm_code < asm_filename > 0);
+      # source line hint found. Split the line into fields separated by commas.
+      # num_of_fields is 4 for sparc, 3 for m68k
+      num_of_fields = split(asm_code, fields, line_delimiter)
+      newlineno = fields[line_field] + line_offset;
+
+      if (newlineno > oldlineno) {
+        while ( newlineno > c_lineno && getline c_code < c_filename > 0) {
+	  c_lineno++
+	  printf("%4d %s\n", c_lineno, c_code)
+	}
+	oldlineno = newlineno
+      }
+    }
+    else if ( asm_code ~ ".*Ltext[ \t]*$" ) {
+      # filename hint found
+      if ( match(asm_code, c_filename)) {
+        ignore_stabd = 0
+      }
+      else {
+        ignore_stabd = 1
+      }
+    }
+    else if ( sys == "elf" && asm_code ~ "section.*\.debug" ) {
+      while ( asm_code !~ "^[ \t]*[.]*previous" &&
+	      asm_code !~ "\.popsection" && 
+              getline asm_code < asm_filename > 0 );
+      if ( ! (getline asm_code < asm_filename > 0)) break;
+    }
+    else if ( sys == "coff" && asm_code ~ "^[ \t]*sdef" ) {
+      if ( asm_code ~ "\.bf" ) {
+         while ( asm_code !~ "^[ \t]*line" && 
+                 getline asm_code < asm_filename > 0 ) {
+           num_of_fields = split(asm_code, fields, "\t")
+           line_offset = fields[line_field] - 1;
+         }
+      }
+      while ( asm_code !~ "^[ \t]*endef" && 
+              getline asm_code < asm_filename > 0 ) {
+      }
+      if ( ! (getline asm_code < asm_filename > 0)) break;
+    }
+    printf("\t\t\t%s\n", asm_code)
+  }
+
+  # general cleanup
+  system("/bin/rm " asm_filename)
+}
+
+function usage() {
+    printf("usage: %s filename compiler-options\n", whoami) > "/dev/stderr"
+}
+
+function error(s) {
+    printf("error: %s\n", s) > "/dev/stderr"
+    exit 1
+}
+
+function parse_cmdline(    i) {
+  # construct filenames to use
+  asm_filename = "/tmp/lister" ARGV[1] ".s"
+  ARGV[1] = ""
+  c_filename = ARGV[2]
+  ARGV[2] = ""
+
+  # construct commandline to use
+  if ( match(c_filename, ".C") || match(c_filename, ".cc") ) {
+    cmdline = "g++"
+  }
+  else if (match(c_filename, ".c") || match(c_filename, ".i")) {
+    cmdline = "gcc"
+  }
+  else {
+    error("unknown extension for file " c_filename)
+  }
+
+  cmdline = cmdline " -g -S -o " asm_filename
+
+  # now we append the compiler options specified by the user
+  cmdline = cmdline " " options
+
+  # last but not least: the name of the file to compile
+  cmdline = cmdline " " c_filename
+}
+
+' $$ $FILENAME
+