Patch for binutils (GAS-980329) for VxWorks on MIPS, take 2

Patch for binutils (GAS-980329) for VxWorks on MIPS, take 2

[Don Bowman]

I'm resubmitting this patch, there was an error in the previous one
regarding the use of ecoff_stabs.

Under VxWorks 5.3.1 [The Tornado 1.0.1 release] for the MIPS targets,
gas cannot create a debuggable image. This occurs since the Tornado
target server requires a separate .stab & .stabstr section. It cannot
deal with the .mdebug ecoff section. 
The fix is to two main areas:
1: configure: accept 'mips-wrs-vxworks' as a valid configuration target
2: obj-elf.h: allow output to separate sections. The comment that was
   there indicated this had been removed due to an Irix 6 limitation. This
   may not affect any of the other ELF targets, but I cannot say for certain:
   it certainly does not affect the VxWorks MIPS platform.

This patch is against GAS-980329

The Changelog entries would be something like:

bfd:
Sun Mar 29 18:32:00 1998 Don Bowman <don@pixsci.com>

        * config.bfd: add mips*el-wrs-vxworks and mips*-wrs-vxworks

gas:
Sun Mar 29 18:32:00 1998 Don Bowman <don@pixsci.com>

        * configure: add mips*el-wrs-vxworks and mips*-wrs-vxworks
        * configure.in: add mips*el-wrs-vxworks and mips*-wrs-vxworks
        * obj-elf.h: allow separate stab sections and non-ecoff debugging for MIPS
        * acconfig.h: add MIPS_STABS_ELF as a configurable option

The following patch was generated by running:

$ diff -up -r gas-980329 gas-980329.modified
--------------START OF PATCH-----------------
diff -r -up gas-980329/bfd/config.bfd gas-980329.modified/bfd/config.bfd
--- gas-980329/bfd/config.bfd	Sun Mar 29 04:18:24 1998
+++ gas-980329.modified/bfd/config.bfd	Sun Mar 29 14:21:33 1998
@@ -423,11 +423,11 @@ case "${targ}" in
     targ_defvec=ecoff_big_vec
     targ_selvecs=ecoff_little_vec
     ;;
-  mips*el-*-elf*)
+  mips*el-*-elf* | mips*el-wrs-vxworks)
     targ_defvec=bfd_elf32_littlemips_vec
     targ_selvecs="bfd_elf32_bigmips_vec bfd_elf64_bigmips_vec bfd_elf64_littlemips_vec"
     ;;
-  mips*-*-elf* | mips*-*-rtems*)
+  mips*-*-elf* | mips*-*-rtems* | mips*-wrs-vxworks)
     targ_defvec=bfd_elf32_bigmips_vec
     targ_selvecs="bfd_elf32_littlemips_vec bfd_elf64_bigmips_vec bfd_elf64_littlemips_vec"
     ;;
diff -r -up gas-980329/gas/acconfig.h gas-980329.modified/gas/acconfig.h
--- gas-980329/gas/acconfig.h	Sun Mar 29 04:10:13 1998
+++ gas-980329.modified/gas/acconfig.h	Mon Mar 30 20:01:41 1998
@@ -77,3 +77,6 @@
 
 /* Needed only for SCO 5.  */
 #undef SCO_ELF
+
+/* needed for non irix ELF targets */
+#undef MIPS_STABS_ELF
Only in gas-980329.modified/gas/config: a.out
diff -r -up gas-980329/gas/config/obj-elf.h gas-980329.modified/gas/config/obj-elf.h
--- gas-980329/gas/config/obj-elf.h	Sun Mar 29 04:10:25 1998
+++ gas-980329.modified/gas/config/obj-elf.h	Mon Mar 30 20:12:33 1998
@@ -141,12 +141,17 @@ extern void obj_elf_init_stab_section PA
 #define ECOFF_DEBUGGING 1
 #endif
 
+
 /* For now, always set ECOFF_DEBUGGING for a MIPS target.  */
 #ifdef TC_MIPS
+#ifdef MIPS_STABS_ELF
+#define ECOFF_DEBUGGING 0
+#else
 #define ECOFF_DEBUGGING 1
-#endif
+#endif /* MIPS_STABS_ELF */
+#endif /* TC_MIPS */
 
-#if ECOFF_DEBUGGING
+#if (ECOFF_DEBUGGING == 1)  || defined(MIPS_STABS_ELF)
 
 /* If we are generating ECOFF debugging information, we need some
    additional fields for each symbol.  */
@@ -157,6 +162,7 @@ extern void obj_elf_init_stab_section PA
   struct localsym *ecoff_symbol; \
   valueT ecoff_extern_size;
 
+#ifndef MIPS_STABS_ELF
 /* We smuggle stabs in ECOFF rather than using a separate section.
    The Irix linker can not handle a separate stabs section.  */
 #undef SEPARATE_STAB_SECTIONS
@@ -167,6 +173,7 @@ extern void obj_elf_init_stab_section PA
 #define OBJ_GENERATE_ASM_LINENO(filename, lineno) \
   ecoff_generate_asm_lineno ((filename), (lineno))
 
+#endif /* MIPS_STABS_ELF */
 #endif /* ECOFF_DEBUGGING */
 
 extern void elf_frob_symbol PARAMS ((struct symbol *, int *));
diff -r -up gas-980329/gas/config.in gas-980329.modified/gas/config.in
--- gas-980329/gas/config.in	Sun Mar 29 04:10:14 1998
+++ gas-980329.modified/gas/config.in	Mon Mar 30 20:01:49 1998
@@ -108,6 +108,9 @@
 /* Needed only for SCO 5.  */
 #undef SCO_ELF
 
+/* needed for non irix ELF targets */
+#undef MIPS_STABS_ELF
+
 /* Define if you have the remove function.  */
 #undef HAVE_REMOVE
 
diff -r -up gas-980329/gas/configure gas-980329.modified/gas/configure
--- gas-980329/gas/configure	Sun Mar 29 04:30:23 1998
+++ gas-980329.modified/gas/configure	Sun Mar 29 17:45:55 1998
@@ -1559,6 +1559,11 @@ EOF
       mips-*-lnews*)        fmt=ecoff em=lnews ;;
       mips-*-riscos*)       fmt=ecoff ;;
       mips-*-sysv*)         fmt=ecoff ;;
+      mips-*-vxworks)	    fmt=elf 
+                            cat >> confdefs.h <<\EOF
+#define MIPS_STABS_ELF 1
+EOF
+;;
       mips-*-elf* | mips-*-rtems* | mips-*-linux-gnu* | mips-*-gnu* | mips-*-openbsd*)
 			    fmt=elf ;;
       mn10200-*-*)	    fmt=elf bfd_gas=yes ;;
diff -r -up gas-980329/gas/configure.in gas-980329.modified/gas/configure.in
--- gas-980329/gas/configure.in	Sun Mar 29 04:30:23 1998
+++ gas-980329.modified/gas/configure.in	Sun Mar 29 17:46:02 1998
@@ -230,6 +230,9 @@ changequote([,])dnl
       mips-*-lnews*)        fmt=ecoff em=lnews ;;
       mips-*-riscos*)       fmt=ecoff ;;
       mips-*-sysv*)         fmt=ecoff ;;
+      mips-*-vxworks)       fmt=elf 
+      		            AC_DEFINE(MIPS_STABS_ELF)
+      		            ;;
       mips-*-elf* | mips-*-rtems* | mips-*-linux-gnu* | mips-*-gnu* | mips-*-openbsd*)
 			    fmt=elf ;;
       mn10200-*-*)	    fmt=elf bfd_gas=yes ;;
diff -r -up gas-980329/ld/configure.tgt gas-980329.modified/ld/configure.tgt
--- gas-980329/ld/configure.tgt	Sun Mar 29 04:28:00 1998
+++ gas-980329.modified/ld/configure.tgt	Sun Mar 29 13:17:27 1998
@@ -157,6 +157,7 @@ mips*vr5000el-*-elf*)	targ_emul=elf32l43
 mips*vr5000-*-elf*)	targ_emul=elf32b4300 ;;
 mips*el-*-elf*)		targ_emul=elf32elmip ;;
 mips*-*-elf*)		targ_emul=elf32ebmip ;;
+mips*-wrs-vxworks*)	targ_emul=elf32ebmip ;;
 mips*-*-rtems*)		targ_emul=elf32ebmip ;;
 mips*el-*-linux-gnu*)	targ_emul=elf32lsmip
 			targ_extra_emuls="elf32bsmip mipslit mipsbig"
--------------END OF PATCH------------------


--don bowman ( don@pixsci.com 519-884-4196 x2235 )