[include/elf]

	* mips.h (E_MIPS_MACH_4120, E_MIPS_MACH_5400, E_MIPS_MACH_5500): New.

[bfd/]
	* archures.c (bfd_mach_mips4120, bfd_mach_mips5400): New.
	(bfd_mach_mips5500): New.
	* cpu-mips.c (I_mips4120, I_mips5400, I_mips5500): New.
	(arch_info_struct): Add corresponding entries here.
	* elfxx-mips.c (_bfd_elf_mips_mach): Handle E_MIPS_MACH_4120,
	E_MIPS_MACH_5400 and E_MIPS_MACH_5500.
	(_bfd_mips_elf_final_write_processing): Handle bfd_mach_mips4120,
	bfd_mach_mips5400 and bfd_mach_mips5500.
	(_bfd_mips_elf_mach_extends_p): New function.
	(_bfd_mips_elf_merge_private_bfd_data): Use it to help merge
	the EF_MIPS_MACH flags.
	* bfd-in2.h: Regenerate.

1 files changed, 50 insertions, 6 deletions

diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
index 72f9a6b..3c8bb5d 100644
--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
@@ -364,6 +364,7 @@ static INLINE int elf_mips_isa PARAMS ((flagword));
 static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
 static void mips_elf_irix6_finish_dynamic_symbol
   PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
+static boolean _bfd_mips_elf_mach_extends_p PARAMS ((flagword, flagword));
 
 /* This will be used when we sort the dynamic relocation records.  */
 static bfd *reldyn_sorting_bfd;
@@ -3058,9 +3059,18 @@ _bfd_elf_mips_mach (flags)
     case E_MIPS_MACH_4111:
       return bfd_mach_mips4111;
 
+    case E_MIPS_MACH_4120:
+      return bfd_mach_mips4120;
+
     case E_MIPS_MACH_4650:
       return bfd_mach_mips4650;
 
+    case E_MIPS_MACH_5400:
+      return bfd_mach_mips5400;
+
+    case E_MIPS_MACH_5500:
+      return bfd_mach_mips5500;
+
     case E_MIPS_MACH_SB1:
       return bfd_mach_mips_sb1;
 
@@ -5935,10 +5945,22 @@ _bfd_mips_elf_final_write_processing (abfd, linker)
       val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111;
       break;
 
+    case bfd_mach_mips4120:
+      val = E_MIPS_ARCH_3 | E_MIPS_MACH_4120;
+      break;
+
     case bfd_mach_mips4650:
       val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650;
       break;
 
+    case bfd_mach_mips5400:
+      val = E_MIPS_ARCH_4 | E_MIPS_MACH_5400;
+      break;
+
+    case bfd_mach_mips5500:
+      val = E_MIPS_ARCH_4 | E_MIPS_MACH_5500;
+      break;
+
     case bfd_mach_mips5000:
     case bfd_mach_mips8000:
     case bfd_mach_mips10000:
@@ -7637,6 +7659,26 @@ _bfd_mips_elf_final_link (abfd, info)
   return true;
 }
 
+/* Return true if machine EXTENSION is an extension of machine BASE,
+   meaning that it should be safe to link code for the two machines
+   and set the output machine to EXTENSION.  EXTENSION and BASE are
+   both submasks of EF_MIPS_MACH.  */
+
+static boolean
+_bfd_mips_elf_mach_extends_p (base, extension)
+     flagword base, extension;
+{
+  /* The vr5500 ISA is an extension of the core vr5400 ISA, but doesn't
+     include the multimedia stuff.  It seems better to allow vr5400
+     and vr5500 code to be merged anyway, since many libraries will
+     just use the core ISA.  Perhaps we could add some sort of ASE
+     flag if this ever proves a problem.  */
+  return (base == 0
+	  || (base == E_MIPS_MACH_5400 && extension == E_MIPS_MACH_5500)
+	  || (base == E_MIPS_MACH_4100 && extension == E_MIPS_MACH_4111)
+	  || (base == E_MIPS_MACH_4100 && extension == E_MIPS_MACH_4120));
+}
+
 /* Merge backend specific data from an object file to the output
    object file when linking.  */
 
@@ -7743,10 +7785,9 @@ _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
 
       /* If either has no machine specified, just compare the general isa's.
 	 Some combinations of machines are ok, if the isa's match.  */
-      if (! new_mach
-	  || ! old_mach
-	  || new_mach == old_mach
-	  )
+      if (new_mach == old_mach
+	  || _bfd_mips_elf_mach_extends_p (new_mach, old_mach)
+	  || _bfd_mips_elf_mach_extends_p (old_mach, new_mach))
 	{
 	  /* Don't warn about mixing code using 32-bit ISAs, or mixing code
 	     using 64-bit ISAs.  They will normally use the same data sizes
@@ -7763,8 +7804,11 @@ _bfd_mips_elf_merge_private_bfd_data (ibfd, obfd)
 	  else
 	    {
 	      /* Do we need to update the mach field?  */
-	      if (old_mach == 0 && new_mach != 0) 
-		elf_elfheader (obfd)->e_flags |= new_mach;
+	      if (_bfd_mips_elf_mach_extends_p (old_mach, new_mach))
+		{
+		  elf_elfheader (obfd)->e_flags &= ~EF_MIPS_MACH;
+		  elf_elfheader (obfd)->e_flags |= new_mach;
+		}
 
 	      /* Do we need to update the ISA field?  */
 	      if (new_isa > old_isa)