[PATCH 2/2] RISC-V: Support Zcmp cm.mv instructions
Jiawei
jiawei@iscas.ac.cn
Wed Jul 26 09:06:22 GMT 2023
This patch supports Zcmp instruction 'cm.mva01s' and 'cm.mvsa01'.
All disassemble instructions use the sreg format.
Co-Authored by: Charlie Keaney <charlie.keaney@embecosm.com>
Co-Authored by: Mary Bennett <mary.bennett@embecosm.com>
Co-Authored by: Nandni Jamnadas <nandni.jamnadas@embecosm.com>
Co-Authored by: Sinan Lin <sinan.lin@linux.alibaba.com>
Co-Authored by: Simon Cook <simon.cook@embecosm.com>
Co-Authored by: Shihua Liao <shihua@iscas.ac.cn>
Co-Authored by: Yulong Shi <yulong@iscas.ac.cn>
gas/ChangeLog:
* config/tc-riscv.c (validate_riscv_insn): New operators.
(riscv_ip): Ditto.
* testsuite/gas/riscv/zcmp-mv.d: New test.
* testsuite/gas/riscv/zcmp-mv.s: New test.
include/ChangeLog:
* opcode/riscv-opc.h (MATCH_CM_MVA01S): New opcode.
(MASK_CM_MVA01S): New mask.
(MATCH_CM_MVSA01): New opcode.
(MASK_CM_MVSA01): New mask.
(DECLARE_INSN): New declarations.
* opcode/riscv.h (OP_MASK_SREG1): New mask.
(OP_SH_SREG1): New operand code.
(OP_MASK_SREG2): New mask.
(OP_SH_SREG2): New operand code.
(X_A0): New reg number.
(X_A1): Ditto.
(X_S7): Ditto.
(RISCV_SREG_0_7): New macro function.
opcodes/ChangeLog:
* riscv-dis.c (riscv_get_sregno):
(print_insn_args):
* riscv-opc.c (match_sreg1_not_eq_sreg2):
---
gas/config/tc-riscv.c | 17 +++++++++++++++++
gas/testsuite/gas/riscv/zcmp-mv.d | 26 ++++++++++++++++++++++++++
gas/testsuite/gas/riscv/zcmp-mv.s | 21 +++++++++++++++++++++
include/opcode/riscv-opc.h | 6 ++++++
include/opcode/riscv.h | 12 ++++++++++++
opcodes/riscv-dis.c | 19 +++++++++++++++++++
opcodes/riscv-opc.c | 8 ++++++++
7 files changed, 109 insertions(+)
create mode 100644 gas/testsuite/gas/riscv/zcmp-mv.d
create mode 100644 gas/testsuite/gas/riscv/zcmp-mv.s
diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index 266a91451b7..c5be308aa08 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -1578,6 +1578,9 @@ validate_riscv_insn (const struct riscv_opcode *opc, int length)
case 'c':
switch (*++oparg)
{
+ /* sreg operators in cm.mvsa01 and cm.mva01s. */
+ case '1': USE_BITS (OP_MASK_SREG1, OP_SH_SREG1); break;
+ case '2': USE_BITS (OP_MASK_SREG2, OP_SH_SREG2); break;
/* byte immediate operators, load/store byte insns. */
case 'h': used_bits |= ENCODE_ZCB_HALFWORD_UIMM (-1U); break;
/* halfword immediate operators, load/store halfword insns. */
@@ -3785,6 +3788,20 @@ riscv_ip (char *str, struct riscv_cl_insn *ip, expressionS *imm_expr,
asarg = expr_parse_end;
imm_expr->X_op = O_absent;
continue;
+
+ case '1':
+ if (!reg_lookup (&asarg, RCLASS_GPR, ®no)
+ || !RISCV_SREG_0_7 (regno))
+ break;
+ INSERT_OPERAND (SREG1, *ip, regno % 8);
+ continue;
+
+ case '2':
+ if (!reg_lookup (&asarg, RCLASS_GPR, ®no)
+ || !RISCV_SREG_0_7 (regno))
+ break;
+ INSERT_OPERAND (SREG2, *ip, regno % 8);
+ continue;
default:
goto unknown_riscv_ip_operand;
diff --git a/gas/testsuite/gas/riscv/zcmp-mv.d b/gas/testsuite/gas/riscv/zcmp-mv.d
new file mode 100644
index 00000000000..351d301dd3f
--- /dev/null
+++ b/gas/testsuite/gas/riscv/zcmp-mv.d
@@ -0,0 +1,26 @@
+#as: -march=rv64i_zcmp
+#source: zcmp-mv.s
+#objdump: -dr -Mno-aliases
+
+.*:[ ]+file format .*
+
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ ]*[0-9a-f]+:[ ]+ac7e[ ]+cm.mva01s[ ]+s0,s7
+[ ]*[0-9a-f]+:[ ]+ac7a[ ]+cm.mva01s[ ]+s0,s6
+[ ]*[0-9a-f]+:[ ]+acfe[ ]+cm.mva01s[ ]+s1,s7
+[ ]*[0-9a-f]+:[ ]+acfa[ ]+cm.mva01s[ ]+s1,s6
+[ ]*[0-9a-f]+:[ ]+afee[ ]+cm.mva01s[ ]+s7,s3
+[ ]*[0-9a-f]+:[ ]+ade2[ ]+cm.mva01s[ ]+s3,s0
+[ ]*[0-9a-f]+:[ ]+aef2[ ]+cm.mva01s[ ]+s5,s4
+[ ]*[0-9a-f]+:[ ]+aefa[ ]+cm.mva01s[ ]+s5,s6
+[ ]*[0-9a-f]+:[ ]+afa2[ ]+cm.mvsa01[ ]+s7,s0
+[ ]*[0-9a-f]+:[ ]+af22[ ]+cm.mvsa01[ ]+s6,s0
+[ ]*[0-9a-f]+:[ ]+afa6[ ]+cm.mvsa01[ ]+s7,s1
+[ ]*[0-9a-f]+:[ ]+af26[ ]+cm.mvsa01[ ]+s6,s1
+[ ]*[0-9a-f]+:[ ]+adbe[ ]+cm.mvsa01[ ]+s3,s7
+[ ]*[0-9a-f]+:[ ]+ada2[ ]+cm.mvsa01[ ]+s3,s0
+[ ]*[0-9a-f]+:[ ]+aeb2[ ]+cm.mvsa01[ ]+s5,s4
+[ ]*[0-9a-f]+:[ ]+aeba[ ]+cm.mvsa01[ ]+s5,s6
diff --git a/gas/testsuite/gas/riscv/zcmp-mv.s b/gas/testsuite/gas/riscv/zcmp-mv.s
new file mode 100644
index 00000000000..0bcf2a6cd98
--- /dev/null
+++ b/gas/testsuite/gas/riscv/zcmp-mv.s
@@ -0,0 +1,21 @@
+target:
+
+ # cm.mva01s
+ cm.mva01s s0,s7
+ cm.mva01s s0,s6
+ cm.mva01s s1,s7
+ cm.mva01s s1,s6
+ cm.mva01s s7,s3
+ cm.mva01s x19,s0
+ cm.mva01s s5,x20
+ cm.mva01s x21,x22
+
+ # cm.mvsa01
+ cm.mvsa01 s7,s0
+ cm.mvsa01 s6,s0
+ cm.mvsa01 s7,s1
+ cm.mvsa01 s6,s1
+ cm.mvsa01 s3,s7
+ cm.mvsa01 x19,s0
+ cm.mvsa01 s5,x20
+ cm.mvsa01 x21,x22
diff --git a/include/opcode/riscv-opc.h b/include/opcode/riscv-opc.h
index f8054f54f15..11e9c0b99d0 100644
--- a/include/opcode/riscv-opc.h
+++ b/include/opcode/riscv-opc.h
@@ -2244,6 +2244,10 @@
#define MASK_CM_POPRET 0xff03
#define MATCH_CM_POPRETZ 0xbc02
#define MASK_CM_POPRETZ 0xff03
+#define MATCH_CM_MVA01S 0xac62
+#define MASK_CM_MVA01S 0xfc63
+#define MATCH_CM_MVSA01 0xac22
+#define MASK_CM_MVSA01 0xfc63
/* Svinval instruction. */
#define MATCH_SINVAL_VMA 0x16000073
#define MASK_SINVAL_VMA 0xfe007fff
@@ -3419,6 +3423,8 @@ DECLARE_INSN(cm_push, MATCH_CM_PUSH, MASK_CM_PUSH)
DECLARE_INSN(cm_pop, MATCH_CM_POP, MASK_CM_POP)
DECLARE_INSN(cm_popret, MATCH_CM_POPRET, MASK_CM_POPRET)
DECLARE_INSN(cm_popretz, MATCH_CM_POPRETZ, MASK_CM_POPRETZ)
+DECLARE_INSN(cm_mvsa01, MATCH_CM_MVSA01, MASK_CM_MVSA01)
+DECLARE_INSN(cm_mva01s, MATCH_CM_MVA01S, MASK_CM_MVA01S)
/* Vendor-specific (T-Head) XTheadBa instructions. */
DECLARE_INSN(th_addsl, MATCH_TH_ADDSL, MASK_TH_ADDSL)
/* Vendor-specific (T-Head) XTheadBb instructions. */
diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h
index f9bfb19bd5e..44576fa9241 100644
--- a/include/opcode/riscv.h
+++ b/include/opcode/riscv.h
@@ -326,6 +326,10 @@ static inline unsigned int riscv_insn_length (insn_t insn)
/* Zc fields. */
#define OP_MASK_RLIST 0xf
#define OP_SH_RLIST 4
+#define OP_MASK_SREG1 0x7
+#define OP_SH_SREG1 7
+#define OP_MASK_SREG2 0x7
+#define OP_SH_SREG2 2
#define NVECR 32
#define NVECM 1
@@ -341,7 +345,10 @@ static inline unsigned int riscv_insn_length (insn_t insn)
#define X_T2 7
#define X_S0 8
#define X_S1 9
+#define X_A0 10
+#define X_A1 11
#define X_S2 18
+#define X_S7 23
#define X_S10 26
#define X_S11 27
#define X_T3 28
@@ -389,6 +396,11 @@ static inline unsigned int riscv_insn_length (insn_t insn)
/* The maximal number of subset can be required. */
#define MAX_SUBSET_NUM 4
+/* The range of sregs. */
+#define RISCV_SREG_0_7(REGNO) \
+ ((REGNO == X_S0 || REGNO == X_S1) \
+ || (REGNO >= X_S2 && REGNO <= X_S7))
+
/* All RISC-V instructions belong to at least one of these classes. */
enum riscv_insn_class
{
diff --git a/opcodes/riscv-dis.c b/opcodes/riscv-dis.c
index d938c9cb2ed..058698c0c0a 100644
--- a/opcodes/riscv-dis.c
+++ b/opcodes/riscv-dis.c
@@ -263,6 +263,17 @@ riscv_get_spimm (insn_t l)
return spimm;
}
+/* Get s-register regno by using sreg number.
+ e.g. the regno of s0 is 8, so
+ riscv_get_sregno (0) equals 8. */
+
+static unsigned
+riscv_get_sregno (unsigned sreg_idx)
+{
+ return sreg_idx > 1 ?
+ sreg_idx + 16 : sreg_idx + 8;
+}
+
/* Print insn arguments for 32/64-bit code. */
static void
@@ -667,6 +678,14 @@ print_insn_args (const char *oparg, insn_t l, bfd_vma pc, disassemble_info *info
case 'c': /* Zcb extension 16 bits length instruction fields. */
switch (*++oparg)
{
+ case '1':
+ print (info->stream, dis_style_register, "%s",
+ riscv_gpr_names[riscv_get_sregno (EXTRACT_OPERAND (SREG1, l))]);
+ break;
+ case '2':
+ print (info->stream, dis_style_register, "%s",
+ riscv_gpr_names[riscv_get_sregno (EXTRACT_OPERAND (SREG2, l))]);
+ break;
case 'b':
print (info->stream, dis_style_immediate, "%d",
(int)EXTRACT_ZCB_BYTE_UIMM (l));
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 7d2f92e736b..b0a69efed49 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -329,6 +329,12 @@ match_th_load_pair(const struct riscv_opcode *op,
return rd1 != rd2 && rd1 != rs && rd2 != rs && match_opcode (op, insn);
}
+match_sreg1_not_eq_sreg2 (const struct riscv_opcode *op, insn_t insn)
+{
+ return match_opcode (op, insn)
+ && (EXTRACT_OPERAND (SREG1, insn) != EXTRACT_OPERAND (SREG2, insn));
+}
+
const struct riscv_opcode riscv_opcodes[] =
{
/* name, xlen, isa, operands, match, mask, match_func, pinfo. */
@@ -1972,6 +1978,8 @@ const struct riscv_opcode riscv_opcodes[] =
{"cm.pop", 0, INSN_CLASS_ZCMP, "{Wcr},Wcp", MATCH_CM_POP, MASK_CM_POP, match_opcode, 0 },
{"cm.popret", 0, INSN_CLASS_ZCMP, "{Wcr},Wcp", MATCH_CM_POPRET, MASK_CM_POPRET, match_opcode, 0 },
{"cm.popretz", 0, INSN_CLASS_ZCMP, "{Wcr},Wcp", MATCH_CM_POPRETZ, MASK_CM_POPRETZ, match_opcode, 0 },
+{"cm.mva01s", 0, INSN_CLASS_ZCMP, "Wc1,Wc2", MATCH_CM_MVA01S, MASK_CM_MVA01S, match_opcode, 0 },
+{"cm.mvsa01", 0, INSN_CLASS_ZCMP, "Wc1,Wc2", MATCH_CM_MVSA01, MASK_CM_MVSA01, match_sreg1_not_eq_sreg2, 0 },
/* Supervisor instructions. */
{"csrr", 0, INSN_CLASS_ZICSR, "d,E", MATCH_CSRRS, MASK_CSRRS|MASK_RS1, match_opcode, INSN_ALIAS },
--
2.25.1
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