RISC-V: Add Zabha extension CAS instructions.

This patch update the cas instruction in Zabha extension [1],
when both Zabha and Zacas extension enabled.

[1] https://github.com/riscv/riscv-zabha/tags

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_multi_subset_supports): New extension case.

gas/ChangeLog:

	* testsuite/gas/riscv/zabha-32.d: New instructions.
	* testsuite/gas/riscv/zabha.d: Ditto.
	* testsuite/gas/riscv/zabha.s: Ditto.

include/ChangeLog:

	* opcode/riscv-opc.h (MATCH_AMOCAS_B): New opcodes.
	(MASK_AMOCAS_B): Ditto.
	(MATCH_AMOCAS_H): Ditto.
	(MASK_AMOCAS_H): Ditto.
	(DECLARE_INSN): New instructions.
	* opcode/riscv.h (enum riscv_insn_class): New class case.

opcodes/ChangeLog:

	* riscv-opc.c: New instructions.

1 files changed, 8 insertions, 0 deletions

diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index f7c0f5c..fb098fa 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -692,6 +692,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.b",       0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_B, MASK_AMOMAXU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amomin.b",        0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_B, MASK_AMOMIN_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amominu.b",       0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_B, MASK_AMOMINU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
+{"amocas.b",        0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_B, MASK_AMOCAS_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoadd.b.aq",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_B|MASK_AQ, MASK_AMOADD_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoswap.b.aq",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_B|MASK_AQ, MASK_AMOSWAP_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoand.b.aq",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_B|MASK_AQ, MASK_AMOAND_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
@@ -701,6 +702,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.b.aq",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_B|MASK_AQ, MASK_AMOMAXU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amomin.b.aq",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_B|MASK_AQ, MASK_AMOMIN_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amominu.b.aq",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_B|MASK_AQ, MASK_AMOMINU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
+{"amocas.b.aq",     0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_B|MASK_AQ, MASK_AMOCAS_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoadd.b.rl",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_B|MASK_RL, MASK_AMOADD_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoswap.b.rl",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_B|MASK_RL, MASK_AMOSWAP_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoand.b.rl",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_B|MASK_RL, MASK_AMOAND_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
@@ -710,6 +712,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.b.rl",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_B|MASK_RL, MASK_AMOMAXU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amomin.b.rl",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_B|MASK_RL, MASK_AMOMIN_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amominu.b.rl",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_B|MASK_RL, MASK_AMOMINU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
+{"amocas.b.rl",     0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_B|MASK_RL, MASK_AMOCAS_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoadd.b.aqrl",   0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_B|MASK_AQRL, MASK_AMOADD_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoswap.b.aqrl",  0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_B|MASK_AQRL, MASK_AMOSWAP_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoand.b.aqrl",   0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_B|MASK_AQRL, MASK_AMOAND_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
@@ -719,6 +722,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.b.aqrl",  0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_B|MASK_AQRL, MASK_AMOMAXU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amomin.b.aqrl",   0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_B|MASK_AQRL, MASK_AMOMIN_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amominu.b.aqrl",  0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_B|MASK_AQRL, MASK_AMOMINU_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
+{"amocas.b.aqrl",   0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_B|MASK_AQRL, MASK_AMOCAS_B|MASK_AQRL, match_opcode, INSN_DREF|INSN_1_BYTE },
 {"amoadd.h",        0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_H, MASK_AMOADD_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoswap.h",       0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_H, MASK_AMOSWAP_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoand.h",        0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_H, MASK_AMOAND_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
@@ -728,6 +732,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.h",       0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_H, MASK_AMOMAXU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amomin.h",        0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_H, MASK_AMOMIN_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amominu.h",       0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_H, MASK_AMOMINU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
+{"amocas.h",        0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_H, MASK_AMOCAS_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoadd.h.aq",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_H|MASK_AQ, MASK_AMOADD_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoswap.h.aq",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_H|MASK_AQ, MASK_AMOSWAP_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoand.h.aq",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_H|MASK_AQ, MASK_AMOAND_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
@@ -737,6 +742,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.h.aq",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_H|MASK_AQ, MASK_AMOMAXU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amomin.h.aq",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_H|MASK_AQ, MASK_AMOMIN_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amominu.h.aq",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_H|MASK_AQ, MASK_AMOMINU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
+{"amocas.h.aq",     0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_H|MASK_AQ, MASK_AMOCAS_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoadd.h.rl",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_H|MASK_RL, MASK_AMOADD_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoswap.h.rl",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_H|MASK_RL, MASK_AMOSWAP_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoand.h.rl",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_H|MASK_RL, MASK_AMOAND_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
@@ -746,6 +752,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.h.rl",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_H|MASK_RL, MASK_AMOMAXU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amomin.h.rl",     0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_H|MASK_RL, MASK_AMOMIN_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amominu.h.rl",    0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_H|MASK_RL, MASK_AMOMINU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
+{"amocas.h.rl",     0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_H|MASK_RL, MASK_AMOCAS_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoadd.h.aqrl",   0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOADD_H|MASK_AQRL, MASK_AMOADD_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoswap.h.aqrl",  0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOSWAP_H|MASK_AQRL, MASK_AMOSWAP_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amoand.h.aqrl",   0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOAND_H|MASK_AQRL, MASK_AMOAND_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
@@ -755,6 +762,7 @@ const struct riscv_opcode riscv_opcodes[] =
 {"amomaxu.h.aqrl",  0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMAXU_H|MASK_AQRL, MASK_AMOMAXU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amomin.h.aqrl",   0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMIN_H|MASK_AQRL, MASK_AMOMIN_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 {"amominu.h.aqrl",  0, INSN_CLASS_ZABHA, "d,t,0(s)", MATCH_AMOMINU_H|MASK_AQRL, MASK_AMOMINU_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
+{"amocas.h.aqrl",   0, INSN_CLASS_ZABHA_AND_ZACAS, "d,t,0(s)", MATCH_AMOCAS_H|MASK_AQRL, MASK_AMOCAS_H|MASK_AQRL, match_opcode, INSN_DREF|INSN_2_BYTE },
 
 /* Zacas instruction subset.  */
 {"amocas.w",         0, INSN_CLASS_ZACAS, "d,t,0(s)", MATCH_AMOCAS_W, MASK_AMOCAS_W|MASK_AQRL, match_opcode, INSN_DREF|INSN_4_BYTE },