[PATCH v2 11/12] MIPS: Return correct size from `mips_insn_size' for MIPS16 JAL/X

From: Maciej W. Rozycki <[email protected]>

Among MIPS16 instructions not only the extended ones have the size of 4 
bytes, but JAL and JALX as well, even though they have their distinct 
major opcode and do not use the EXTEND prefix.  Update `mips_insn_size' 
accordingly.

This function is currently never called for ISA_MIPS16, so the bug does 
not hit, but it will with the next change.

Approved-By: Maciej W. Rozycki <[email protected]>
---
New change in v2.
---
 gdb/mips-tdep.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

gdb-mips16-insn-size-jal.diff
Index: binutils-gdb/gdb/mips-tdep.c
===================================================================
--- binutils-gdb.orig/gdb/mips-tdep.c
+++ binutils-gdb/gdb/mips-tdep.c
@@ -1563,7 +1563,8 @@ mips_insn_size (enum mips_isa isa, ULONG
       else
 	return MIPS_INSN16_SIZE;
     case ISA_MIPS16:
-      if ((insn & 0xf800) == 0xf000)
+      if ((insn & 0xf800) == 0x1800
+	  || (insn & 0xf800) == 0xf000)
 	return 2 * MIPS_INSN16_SIZE;
       else
 	return MIPS_INSN16_SIZE;