include/opcode/

	* mips.h (mips_decode_reg_operand): New function.
	(INSN_WRITE_SHIFT, INSN_WRITE_1, INSN_WRITE_2, INSN_WRITE_ALL)
	(INSN_READ_SHIFT, INSN_READ_1, INSN_READ_2, INSN_READ_3, INSN_READ_4)
	(INSN_READ_ALL, INSN_READ_GPR_24, INSN_WRITE_GPR_24, INSN_UDI):
	New macros.
	(INSN_WRITE_GPR_D, INSN_WRITE_GPR_T, INSN_WRITE_FPR_D)
	(INSN_WRITE_FPR_S, INSN_WRITE_FPR_T, INSN_READ_GPR_S, INSN_READ_GPR_T)
	(INSN_READ_FPR_S, INSN_READ_FPR_T, INSN_READ_FPR_R, INSN_WRITE_GPR_S)
	(INSN2_WRITE_GPR_Z, INSN2_WRITE_FPR_Z, INSN2_READ_GPR_Z)
	(INSN2_READ_FPR_Z, INSN2_READ_GPR_D, INSN2_READ_FPR_D)
	(INSN2_WRITE_GPR_MB, INSN2_READ_GPR_MC, INSN2_MOD_GPR_MD)
	(INSN2_READ_GPR_ME, INSN2_MOD_GPR_MF, INSN2_READ_GPR_MG)
	(INSN2_READ_GPR_MJ, INSN2_WRITE_GPR_MJ, INSN2_READ_GPR_MP)
	(INSN2_WRITE_GPR_MP, INSN2_READ_GPR_MQ, INSN2_READ_GP)
	(INSN2_WRITE_GPR_MH, INSN2_READ_GPR_MMN): Delete.  Renumber other
	macros to cover the gaps.
	(INSN2_MOD_SP): Replace with...
	(INSN2_WRITE_SP, INSN2_READ_SP): ...these new macros.
	(MIPS16_INSN_WRITE_X, MIPS16_INSN_WRITE_Y, MIPS16_INSN_WRITE_Z)
	(MIPS16_INSN_WRITE_T, MIPS16_INSN_WRITE_31, MIPS16_INSN_WRITE_GPR_Y)
	(MIPS16_INSN_READ_X, MIPS16_INSN_READ_Y, MIPS16_INSN_READ_Z)
	(MIPS16_INSN_READ_T, MIPS16_INSN_READ_SP, MIPS16_INSN_READ_GPR_X):
	Delete.

opcodes/
	* mips-opc.c (WR_1, WR_2, RD_1, RD_2, RD_3, RD_4, MOD_1, MOD_2, UDI):
	New macros.
	(WR_d, WR_t, WR_D, WR_T, WR_S, RD_s, RD_b, RD_t, RD_S, RD_T, RD_R)
	(WR_z, WR_Z, RD_z, RD_Z, RD_d): Delete.
	(mips_builtin_opcodes): Use the new position-based read-write flags
	instead of field-based ones.  Use UDI for "udi..." instructions.
	* mips16-opc.c (WR_1, WR_2, RD_1, RD_2, RD_3, RD_4, MOD_1, MOD_2):
	New macros.
	(WR_x, WR_y, WR_z, WR_Y, RD_x, RD_y, RD_Z, RD_X): Delete.
	(RD_T, WR_T, WR_31): Redefine using generic INSN_* flags.
	(WR_SP, RD_16): New macros.
	(RD_SP): Redefine as an INSN2_* flag.
	(MOD_SP): Redefine in terms of RD_SP and WR_SP.
	(mips16_opcodes): Use the new position-based read-write flags
	instead of field-based ones.  Use RD_16 for "nop".  Move RD_SP to
	pinfo2 field.
	* micromips-opc.c (WR_1, WR_2, RD_1, RD_2, RD_3, RD_4, MOD_1, MOD_2):
	New macros.
	(WR_mb, RD_mc, RD_md, WR_md, RD_me, RD_mf, WR_mf, RD_mg, WR_mh, RD_mj)
	(WR_mj, RD_ml, RD_mmn, RD_mp, WR_mp, RD_mq, RD_gp, WR_d, WR_t, WR_D)
	(WR_T, WR_S, RD_s, RD_b, RD_t, RD_T, RD_S, RD_R, RD_D): Delete.
	(RD_sp, WR_sp): Redefine to INSN2_READ_SP and INSN2_WRITE_SP.
	(micromips_opcodes): Use the new position-based read-write flags
	instead of field-based ones.
	* mips-dis.c (print_insn_arg): Use mips_decode_reg_operand.
	(print_insn_mips, print_insn_micromips): Use INSN_WRITE_1 instead
	of field-based flags.

gas/
	* config/tc-mips.c (MAX_OPERANDS): New macro.
	(mips_operand_array): New structure.
	(mips_operands, mips16_operands, micromips_operands): New arrays.
	(micromips_to_32_reg_b_map, micromips_to_32_reg_c_map)
	(micromips_to_32_reg_e_map, micromips_to_32_reg_f_map)
	(micromips_to_32_reg_g_map, micromips_to_32_reg_l_map)
	(micromips_to_32_reg_q_map): Delete.
	(insn_operands, insn_opno, insn_extract_operand): New functions.
	(validate_mips_insn): Take a mips_operand_array as argument and
	use it to build up a list of operands.  Extend to handle INSN_MACRO
	and MIPS16.
	(validate_mips16_insn): New function.
	(validate_micromips_insn): Take a mips_operand_array as argument.
	Handle INSN_MACRO.
	(md_begin): Initialize mips_operands, mips16_operands and
	micromips_operands.  Call validate_mips_insn and
	validate_micromips_insn for macro instructions too.
	Call validate_mips16_insn for MIPS16 instructions.
	(insn_read_mask, insn_write_mask, operand_reg_mask, insn_reg_mask):
	New functions.
	(gpr_read_mask, gpr_write_mask, fpr_read_mask, fpr_write_mask): Use
	them.  Handle INSN_UDI.
	(get_append_method): Use gpr_read_mask.

2 files changed, 88 insertions, 121 deletions

diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index b3cbe9b..4ef1fda 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,5 +1,31 @@
 2013-08-01  Richard Sandiford  <rdsandiford@googlemail.com>
 
+	* mips.h (mips_decode_reg_operand): New function.
+	(INSN_WRITE_SHIFT, INSN_WRITE_1, INSN_WRITE_2, INSN_WRITE_ALL)
+	(INSN_READ_SHIFT, INSN_READ_1, INSN_READ_2, INSN_READ_3, INSN_READ_4)
+	(INSN_READ_ALL, INSN_READ_GPR_24, INSN_WRITE_GPR_24, INSN_UDI):
+	New macros.
+	(INSN_WRITE_GPR_D, INSN_WRITE_GPR_T, INSN_WRITE_FPR_D)
+	(INSN_WRITE_FPR_S, INSN_WRITE_FPR_T, INSN_READ_GPR_S, INSN_READ_GPR_T)
+	(INSN_READ_FPR_S, INSN_READ_FPR_T, INSN_READ_FPR_R, INSN_WRITE_GPR_S)
+	(INSN2_WRITE_GPR_Z, INSN2_WRITE_FPR_Z, INSN2_READ_GPR_Z)
+	(INSN2_READ_FPR_Z, INSN2_READ_GPR_D, INSN2_READ_FPR_D)
+	(INSN2_WRITE_GPR_MB, INSN2_READ_GPR_MC, INSN2_MOD_GPR_MD)
+	(INSN2_READ_GPR_ME, INSN2_MOD_GPR_MF, INSN2_READ_GPR_MG)
+	(INSN2_READ_GPR_MJ, INSN2_WRITE_GPR_MJ, INSN2_READ_GPR_MP)
+	(INSN2_WRITE_GPR_MP, INSN2_READ_GPR_MQ, INSN2_READ_GP)
+	(INSN2_WRITE_GPR_MH, INSN2_READ_GPR_MMN): Delete.  Renumber other
+	macros to cover the gaps.
+	(INSN2_MOD_SP): Replace with...
+	(INSN2_WRITE_SP, INSN2_READ_SP): ...these new macros.
+	(MIPS16_INSN_WRITE_X, MIPS16_INSN_WRITE_Y, MIPS16_INSN_WRITE_Z)
+	(MIPS16_INSN_WRITE_T, MIPS16_INSN_WRITE_31, MIPS16_INSN_WRITE_GPR_Y)
+	(MIPS16_INSN_READ_X, MIPS16_INSN_READ_Y, MIPS16_INSN_READ_Z)
+	(MIPS16_INSN_READ_T, MIPS16_INSN_READ_SP, MIPS16_INSN_READ_GPR_X):
+	Delete.
+
+2013-08-01  Richard Sandiford  <rdsandiford@googlemail.com>
+
 	* mips.h (MIPS16_INSN_WRITE_SP, MIPS16_INSN_READ_31)
 	(MIPS16_INSN_READ_PC, MIPS16_INSN_UNCOND_BRANCH)
 	(MIPS16_INSN_COND_BRANCH): Delete.
diff --git a/include/opcode/mips.h b/include/opcode/mips.h
index 299c1eb..b299bd8 100644
--- a/include/opcode/mips.h
+++ b/include/opcode/mips.h
@@ -604,6 +604,17 @@ mips_decode_int_operand (const struct mips_int_operand *operand,
   return uval;
 }
 
+/* Return the register that OPERAND encodes as UVAL.  */
+
+static inline int
+mips_decode_reg_operand (const struct mips_reg_operand *operand,
+			 unsigned int uval)
+{
+  if (operand->reg_map)
+    uval = operand->reg_map[uval];
+  return uval;
+}
+
 /* PC-relative operand OPERAND has value UVAL and is relative to BASE_PC.
    Return the address that it encodes.  */
 
@@ -836,71 +847,67 @@ struct mips_opcode
 /* These are the bits which may be set in the pinfo field of an
    instructions, if it is not equal to INSN_MACRO.  */
 
-/* Modifies the general purpose register in OP_*_RD.  */
-#define INSN_WRITE_GPR_D            0x00000001
-/* Modifies the general purpose register in OP_*_RT.  */
-#define INSN_WRITE_GPR_T            0x00000002
+/* Writes to operand number N.  */
+#define INSN_WRITE_SHIFT            0
+#define INSN_WRITE_1                0x00000001
+#define INSN_WRITE_2                0x00000002
+#define INSN_WRITE_ALL              0x00000003
+/* Reads from operand number N.  */
+#define INSN_READ_SHIFT             2
+#define INSN_READ_1                 0x00000004
+#define INSN_READ_2                 0x00000008
+#define INSN_READ_3                 0x00000010
+#define INSN_READ_4                 0x00000020
+#define INSN_READ_ALL               0x0000003c
 /* Modifies general purpose register 31.  */
-#define INSN_WRITE_GPR_31           0x00000004
-/* Modifies the floating point register in OP_*_FD.  */
-#define INSN_WRITE_FPR_D            0x00000008
-/* Modifies the floating point register in OP_*_FS.  */
-#define INSN_WRITE_FPR_S            0x00000010
-/* Modifies the floating point register in OP_*_FT.  */
-#define INSN_WRITE_FPR_T            0x00000020
-/* Reads the general purpose register in OP_*_RS.  */
-#define INSN_READ_GPR_S             0x00000040
-/* Reads the general purpose register in OP_*_RT.  */
-#define INSN_READ_GPR_T             0x00000080
-/* Reads the floating point register in OP_*_FS.  */
-#define INSN_READ_FPR_S             0x00000100
-/* Reads the floating point register in OP_*_FT.  */
-#define INSN_READ_FPR_T             0x00000200
-/* Reads the floating point register in OP_*_FR.  */
-#define INSN_READ_FPR_R		    0x00000400
+#define INSN_WRITE_GPR_31           0x00000040
 /* Modifies coprocessor condition code.  */
-#define INSN_WRITE_COND_CODE        0x00000800
+#define INSN_WRITE_COND_CODE        0x00000080
 /* Reads coprocessor condition code.  */
-#define INSN_READ_COND_CODE         0x00001000
+#define INSN_READ_COND_CODE         0x00000100
 /* TLB operation.  */
-#define INSN_TLB                    0x00002000
+#define INSN_TLB                    0x00000200
 /* Reads coprocessor register other than floating point register.  */
-#define INSN_COP                    0x00004000
+#define INSN_COP                    0x00000400
 /* Instruction loads value from memory, requiring delay.  */
-#define INSN_LOAD_MEMORY_DELAY      0x00008000
+#define INSN_LOAD_MEMORY_DELAY      0x00000800
 /* Instruction loads value from coprocessor, requiring delay.  */
-#define INSN_LOAD_COPROC_DELAY	    0x00010000
+#define INSN_LOAD_COPROC_DELAY	    0x00001000
 /* Instruction has unconditional branch delay slot.  */
-#define INSN_UNCOND_BRANCH_DELAY    0x00020000
+#define INSN_UNCOND_BRANCH_DELAY    0x00002000
 /* Instruction has conditional branch delay slot.  */
-#define INSN_COND_BRANCH_DELAY      0x00040000
+#define INSN_COND_BRANCH_DELAY      0x00004000
 /* Conditional branch likely: if branch not taken, insn nullified.  */
-#define INSN_COND_BRANCH_LIKELY	    0x00080000
+#define INSN_COND_BRANCH_LIKELY	    0x00008000
 /* Moves to coprocessor register, requiring delay.  */
-#define INSN_COPROC_MOVE_DELAY      0x00100000
+#define INSN_COPROC_MOVE_DELAY      0x00010000
 /* Loads coprocessor register from memory, requiring delay.  */
-#define INSN_COPROC_MEMORY_DELAY    0x00200000
+#define INSN_COPROC_MEMORY_DELAY    0x00020000
 /* Reads the HI register.  */
-#define INSN_READ_HI		    0x00400000
+#define INSN_READ_HI		    0x00040000
 /* Reads the LO register.  */
-#define INSN_READ_LO		    0x00800000
+#define INSN_READ_LO		    0x00080000
 /* Modifies the HI register.  */
-#define INSN_WRITE_HI		    0x01000000
+#define INSN_WRITE_HI		    0x00100000
 /* Modifies the LO register.  */
-#define INSN_WRITE_LO		    0x02000000
+#define INSN_WRITE_LO		    0x00200000
 /* Not to be placed in a branch delay slot, either architecturally
    or for ease of handling (such as with instructions that take a trap).  */
-#define INSN_NO_DELAY_SLOT	    0x04000000
+#define INSN_NO_DELAY_SLOT	    0x00400000
 /* Instruction stores value into memory.  */
-#define INSN_STORE_MEMORY	    0x08000000
+#define INSN_STORE_MEMORY	    0x00800000
 /* Instruction uses single precision floating point.  */
-#define FP_S			    0x10000000
+#define FP_S			    0x01000000
 /* Instruction uses double precision floating point.  */
-#define FP_D			    0x20000000
+#define FP_D			    0x02000000
 /* Instruction is part of the tx39's integer multiply family.    */
-#define INSN_MULT                   0x40000000
-/* Modifies the general purpose register in MICROMIPSOP_*_RS.  */
-#define INSN_WRITE_GPR_S	    0x80000000
+#define INSN_MULT                   0x04000000
+/* Reads general purpose register 24.  */
+#define INSN_READ_GPR_24            0x08000000
+/* Writes to general purpose register 24.  */
+#define INSN_WRITE_GPR_24           0x10000000
+/* A user-defined instruction.  */
+#define INSN_UDI                    0x20000000
 /* Instruction is actually a macro.  It should be ignored by the
    disassembler, and requires special treatment by the assembler.  */
 #define INSN_MACRO                  0xffffffff
@@ -922,62 +929,24 @@ struct mips_opcode
    only be set for macros.  For instructions, FP_D in pinfo carries the
    same information.  */
 #define INSN2_M_FP_D		    0x00000010
-/* Modifies the general purpose register in OP_*_RZ.  */
-#define INSN2_WRITE_GPR_Z	    0x00000020
-/* Modifies the floating point register in OP_*_FZ.  */
-#define INSN2_WRITE_FPR_Z	    0x00000040
-/* Reads the general purpose register in OP_*_RZ.  */
-#define INSN2_READ_GPR_Z	    0x00000080
-/* Reads the floating point register in OP_*_FZ.  */
-#define INSN2_READ_FPR_Z	    0x00000100
-/* Reads the general purpose register in OP_*_RD.  */
-#define INSN2_READ_GPR_D	    0x00000200
-
-
 /* Instruction has a branch delay slot that requires a 16-bit instruction.  */
-#define INSN2_BRANCH_DELAY_16BIT    0x00000400
+#define INSN2_BRANCH_DELAY_16BIT    0x00000020
 /* Instruction has a branch delay slot that requires a 32-bit instruction.  */
-#define INSN2_BRANCH_DELAY_32BIT    0x00000800
-/* Reads the floating point register in MICROMIPSOP_*_FD.  */
-#define INSN2_READ_FPR_D	    0x00001000
-/* Modifies the general purpose register in MICROMIPSOP_*_MB.  */
-#define INSN2_WRITE_GPR_MB	    0x00002000
-/* Reads the general purpose register in MICROMIPSOP_*_MC.  */
-#define INSN2_READ_GPR_MC	    0x00004000
-/* Reads/writes the general purpose register in MICROMIPSOP_*_MD.  */
-#define INSN2_MOD_GPR_MD	    0x00008000
-/* Reads the general purpose register in MICROMIPSOP_*_ME.  */
-#define INSN2_READ_GPR_ME	    0x00010000
-/* Reads/writes the general purpose register in MICROMIPSOP_*_MF.  */
-#define INSN2_MOD_GPR_MF	    0x00020000
-/* Reads the general purpose register in MICROMIPSOP_*_MG.  */
-#define INSN2_READ_GPR_MG	    0x00040000
-/* Reads the general purpose register in MICROMIPSOP_*_MJ.  */
-#define INSN2_READ_GPR_MJ	    0x00080000
-/* Modifies the general purpose register in MICROMIPSOP_*_MJ.  */
-#define INSN2_WRITE_GPR_MJ	    0x00100000
-/* Reads the general purpose register in MICROMIPSOP_*_MP.  */
-#define INSN2_READ_GPR_MP	    0x00200000
-/* Modifies the general purpose register in MICROMIPSOP_*_MP.  */
-#define INSN2_WRITE_GPR_MP	    0x00400000
-/* Reads the general purpose register in MICROMIPSOP_*_MQ.  */
-#define INSN2_READ_GPR_MQ	    0x00800000
-/* Reads/Writes the stack pointer ($29).  */
-#define INSN2_MOD_SP		    0x01000000
+#define INSN2_BRANCH_DELAY_32BIT    0x00000040
+/* Writes to the stack pointer ($29).  */
+#define INSN2_WRITE_SP		    0x00000080
+/* Reads from the stack pointer ($29).  */
+#define INSN2_READ_SP		    0x00000100
 /* Reads the RA ($31) register.  */
-#define INSN2_READ_GPR_31	    0x02000000
-/* Reads the global pointer ($28).  */
-#define INSN2_READ_GP		    0x04000000
+#define INSN2_READ_GPR_31	    0x00000200
 /* Reads the program counter ($pc).  */
-#define INSN2_READ_PC		    0x08000000
+#define INSN2_READ_PC		    0x00000400
 /* Is an unconditional branch insn. */
-#define INSN2_UNCOND_BRANCH	    0x10000000
+#define INSN2_UNCOND_BRANCH	    0x00000800
 /* Is a conditional branch insn. */
-#define INSN2_COND_BRANCH	    0x20000000
-/* Modifies the general purpose registers in MICROMIPSOP_*_MH.  */
-#define INSN2_WRITE_GPR_MH	    0x40000000
-/* Reads the general purpose registers in MICROMIPSOP_*_MM/N.  */
-#define INSN2_READ_GPR_MMN	    0x80000000
+#define INSN2_COND_BRANCH	    0x00001000
+/* Reads from $16.  This is true of the MIPS16 0x6500 nop.  */
+#define INSN2_READ_GPR_16           0x00002000
 
 /* Masks used to mark instructions to indicate which MIPS ISA level
    they were introduced in.  INSN_ISA_MASK masks an enumeration that
@@ -1633,34 +1602,6 @@ extern int bfd_mips_num_opcodes;
 #define MIPS16_ALL_ARGS    0xe
 #define MIPS16_ALL_STATICS 0xb
 
-/* For the mips16, we use the same opcode table format and a few of
-   the same flags.  However, most of the flags are different.  */
-
-/* Modifies the register in MIPS16OP_*_RX.  */
-#define MIPS16_INSN_WRITE_X		    0x00000001
-/* Modifies the register in MIPS16OP_*_RY.  */
-#define MIPS16_INSN_WRITE_Y		    0x00000002
-/* Modifies the register in MIPS16OP_*_RZ.  */
-#define MIPS16_INSN_WRITE_Z		    0x00000004
-/* Modifies the T ($24) register.  */
-#define MIPS16_INSN_WRITE_T		    0x00000008
-/* Modifies the RA ($31) register.  */
-#define MIPS16_INSN_WRITE_31		    0x00000020
-/* Modifies the general purpose register in MIPS16OP_*_REG32R.  */
-#define MIPS16_INSN_WRITE_GPR_Y		    0x00000040
-/* Reads the register in MIPS16OP_*_RX.  */
-#define MIPS16_INSN_READ_X		    0x00000080
-/* Reads the register in MIPS16OP_*_RY.  */
-#define MIPS16_INSN_READ_Y		    0x00000100
-/* Reads the register in MIPS16OP_*_MOVE32Z.  */
-#define MIPS16_INSN_READ_Z		    0x00000200
-/* Reads the T ($24) register.  */
-#define MIPS16_INSN_READ_T		    0x00000400
-/* Reads the SP ($29) register.  */
-#define MIPS16_INSN_READ_SP		    0x00000800
-/* Reads the general purpose register in MIPS16OP_*_REGR32.  */
-#define MIPS16_INSN_READ_GPR_X		    0x00004000
-
 /* The following flags have the same value for the mips16 opcode
    table: