RISC-V: Add .insn support.

	gas/ChangeLog
	2018-03-07  Kito Cheng  <kito.cheng@gmail.com>
	* config/tc-riscv.c (opcode_name_list): New.
	(opcode_names_hash): Likewise.
	(init_opcode_names_hash): Likewise.
	(opcode_name_lookup): Likewise.
	(validate_riscv_insn): New argument length, and add new format
	which used in .insn directive.
	(md_begin): Refine hash table initialization logic into
	init_opcode_hash.
	(init_opcode_hash): New.
	(my_getOpcodeExpression): Parse opcode name for .insn.
	(riscv_ip): New argument hash, able to handle .insn directive.
	(s_riscv_insn): Handler for .insn directive.
	(riscv_pseudo_table): New entry for .insn.
	* doc/c-riscv.texi: Add documentation for .insn directive.
	* testsuite/gas/riscv/insn.d: Add testcase for .insn directive.
	* testsuite/gas/riscv/insn.s: Likewise.

	include/ChangeLog
	2018-03-07  Kito Cheng  <kito.cheng@gmail.com>
	* opcode/riscv.h (OP_MASK_FUNCT3): New.
	(OP_SH_FUNCT3): Likewise.
	(OP_MASK_FUNCT7): Likewise.
	(OP_SH_FUNCT7): Likewise.
	(OP_MASK_OP2): Likewise.
	(OP_SH_OP2): Likewise.
	(OP_MASK_CFUNCT4): Likewise.
	(OP_SH_CFUNCT4): Likewise.
	(OP_MASK_CFUNCT3): Likewise.
	(OP_SH_CFUNCT3): Likewise.
	(riscv_insn_types): Likewise.

	opcodes/ChangeLog
	2018-03-07  Kito Cheng  <kito.cheng@gmail.com>
	* riscv-opc.c (riscv_insn_types): New.

2 files changed, 78 insertions, 0 deletions

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index e82ca88..f5a4862 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2018-03-14  Kito Cheng  <kito.cheng@gmail.com>
+
+	* riscv-opc.c (riscv_insn_types): New.
+
 2018-03-13  Nick Clifton  <nickc@redhat.com>
 
 	* po/pt_BR.po: Updated Brazilian Portuguese translation.
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 4aeb55a..a285b14 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -741,3 +741,77 @@ const struct riscv_opcode riscv_opcodes[] =
 /* Terminate the list.  */
 {0, 0, 0, 0, 0, 0, 0}
 };
+
+/* Instruction format for .insn directive.  */
+const struct riscv_opcode riscv_insn_types[] =
+{
+/* name,  isa,          operands, match, mask,    match_func, pinfo.  */
+{"r",     "I",  "O4,F3,F7,d,s,t",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,D,s,t",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,d,S,t",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,D,S,t",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,d,s,T",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,D,s,T",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,d,S,T",     0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F7,D,S,T",     0,    0,  match_opcode, 0 },
+
+{"r",     "I",  "O4,F3,F2,d,s,t,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,s,t,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,S,t,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,S,t,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,s,T,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,s,T,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,S,T,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,S,T,r",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,s,t,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,s,t,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,S,t,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,S,t,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,s,T,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,s,T,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,d,S,T,R",   0,    0,  match_opcode, 0 },
+{"r",     "I",  "O4,F3,F2,D,S,T,R",   0,    0,  match_opcode, 0 },
+
+{"i",     "I",  "O4,F3,d,s,j",        0,    0,  match_opcode, 0 },
+{"i",     "I",  "O4,F3,D,s,j",        0,    0,  match_opcode, 0 },
+{"i",     "I",  "O4,F3,d,S,j",        0,    0,  match_opcode, 0 },
+{"i",     "I",  "O4,F3,D,S,j",        0,    0,  match_opcode, 0 },
+
+{"i",     "I",  "O4,F3,d,o(s)",       0,    0,  match_opcode, 0 },
+{"i",     "I",  "O4,F3,D,o(s)",       0,    0,  match_opcode, 0 },
+
+{"s",     "I",  "O4,F3,d,o(s)",       0,    0,  match_opcode, 0 },
+{"s",     "I",  "O4,F3,D,o(s)",       0,    0,  match_opcode, 0 },
+
+{"sb",    "I",  "O4,F3,s,t,p",        0,    0,  match_opcode, 0 },
+{"sb",    "I",  "O4,F3,S,t,p",        0,    0,  match_opcode, 0 },
+{"sb",    "I",  "O4,F3,s,T,p",        0,    0,  match_opcode, 0 },
+{"sb",    "I",  "O4,F3,S,T,p",        0,    0,  match_opcode, 0 },
+
+{"sb",    "I",  "O4,F3,t,q(s)",       0,    0,  match_opcode, 0 },
+{"sb",    "I",  "O4,F3,T,q(s)",       0,    0,  match_opcode, 0 },
+
+{"u",     "I",  "O4,d,u",             0,    0,  match_opcode, 0 },
+{"u",     "I",  "O4,D,u",             0,    0,  match_opcode, 0 },
+
+{"uj",    "I",  "O4,d,a",             0,    0,  match_opcode, 0 },
+{"uj",    "I",  "O4,D,a",             0,    0,  match_opcode, 0 },
+
+{"cr",    "C",  "O2,CF4,d,CV",        0,    0,  match_opcode, 0 },
+{"cr",    "C",  "O2,CF4,D,CV",        0,    0,  match_opcode, 0 },
+{"cr",    "C",  "O2,CF4,d,CT",        0,    0,  match_opcode, 0 },
+{"cr",    "C",  "O2,CF4,D,CT",        0,    0,  match_opcode, 0 },
+
+{"ci",    "C",  "O2,CF3,d,Co",        0,    0,  match_opcode, 0 },
+{"ci",    "C",  "O2,CF3,D,Co",        0,    0,  match_opcode, 0 },
+
+{"ciw",   "C",  "O2,CF3,Ct,C8",        0,    0,  match_opcode, 0 },
+{"ciw",   "C",  "O2,CF3,CD,C8",        0,    0,  match_opcode, 0 },
+
+{"cb",    "C",  "O2,CF3,Cs,Cp",       0,    0,  match_opcode, 0 },
+{"cb",    "C",  "O2,CF3,CS,Cp",       0,    0,  match_opcode, 0 },
+
+{"cj",    "C",  "O2,CF3,Ca",          0,    0,  match_opcode, 0 },
+/* Terminate the list.  */
+{0, 0, 0, 0, 0, 0, 0}
+};