Update PRU assembler to corect hardware register numbering for DWARF.

A small rework of the PRU GCC port exposed that CIE data alignment is
erroneously set to 4 for PRU in GAS. In fact PRU stack must be aligned to 1.
Set the macro to -1, to allow output from GCC to be assembled without errors.

Also, while at it, set DWARF2 HW register numbering to follow latest

	* config/tc-pru.c (pru_regname_to_dw2regnum): Return the starting HW
	byte-register number.
	(pru_frame_initial_instructions): Use byte-numbering for FP index.
	* config/tc-pru.h (DWARF2_DEFAULT_RETURN_COLUMN): Use number from
	latest GCC.
	(DWARF2_CIE_DATA_ALIGNMENT): Set to -1.

1 files changed, 1 insertions, 1 deletions

diff --git a/ld/ldlex.l b/ld/ldlex.l
index 261c0c1..c80db58 100644
--- a/ld/ldlex.l
+++ b/ld/ldlex.l
@@ -424,7 +424,7 @@ V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
 					/* PR ld/20906.  A corrupt input file
 					   can contain bogus strings.  */
 					len = strlen (yylval.name);
-					if (len > yyleng - 2)
+					if (len > (bfd_size_type) yyleng - 2)
 					  len = yyleng - 2;
 					yylval.name[len] = 0;
 					return NAME;