yann@1: Grabbed with
yann@1: wget 'http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/opcodes/ppc-opc.c.diff?r1=1.70&r2=1.71&cvsroot=src'
yann@1: See 
yann@1: http://mail.gnu.org/archive/html/bug-binutils/2004-05/msg00071.html
yann@1: and
yann@1: http://sources.redhat.com/ml/binutils-cvs/2004-05/msg00111.html
yann@1: 
yann@1: This fixes problems like
yann@1: {standard input}: Assembler messages:
yann@1: {standard input}:1: Error: Unrecognized opcode: `dssall' 
yann@1: which show up in binutils-2.15 when building the Linux kernel,
yann@1: or possibly failed compilations when building setjmp/longjmp in glibc.
yann@1: 
yann@1: An alternative fix would be to pass -many to the assembler.
yann@1: A patch to do that for glibc is at
yann@1: wget 'http://sources.redhat.com/cgi-bin/get-raw-msg?listname=libc-alpha&date=2004-05&msgid=40B36E8C.9030609%40us.ibm.com'
yann@1: Yet another, better, fix would be for gcc to generate assembly
yann@1: that told the assembler which processor type to use.
yann@1: Presumably the Linux kernel sources would need a fix, too.
yann@1: Probably better to just fix binutils to accept sources that it used to.
yann@1: 
yann@1: 
yann@1: ===================================================================
yann@1: RCS file: /cvs/src/src/opcodes/ppc-opc.c,v
yann@1: retrieving revision 1.70
yann@1: retrieving revision 1.71
yann@1: diff -u -r1.70 -r1.71
yann@1: --- src/opcodes/ppc-opc.c	2004/05/05 13:43:36	1.70
yann@1: +++ src/opcodes/ppc-opc.c	2004/05/19 05:11:48	1.71
yann@1: @@ -1004,8 +1004,13 @@
yann@1:  
yann@1:    /* If only one bit of the FXM field is set, we can use the new form
yann@1:       of the instruction, which is faster.  Unlike the Power4 branch hint
yann@1: -     encoding, this is not backward compatible.  */
yann@1: -  else if ((dialect & PPC_OPCODE_POWER4) != 0 && (value & -value) == value)
yann@1: +     encoding, this is not backward compatible.  Do not generate the
yann@1: +     new form unless -mpower4 has been given, or -many and the two
yann@1: +     operand form of mfcr was used.  */
yann@1: +  else if ((value & -value) == value
yann@1: +	   && ((dialect & PPC_OPCODE_POWER4) != 0
yann@1: +	       || ((dialect & PPC_OPCODE_ANY) != 0
yann@1: +		   && (insn & (0x3ff << 1)) == 19 << 1)))
yann@1:      insn |= 1 << 20;
yann@1:  
yann@1:    /* Any other value on mfcr is an error.  */