[PATCH v2] RISC-V: Control fence.i and csr instructions by zifencei and zicsr.
Nelson Chu
nelson.chu@sifive.com
Tue Dec 8 01:54:26 GMT 2020
bfd/
* elfxx-riscv.c (riscv_ext_dont_care_version): New function. Return
TRUE if we don't care the versions of the extensions. These extensions
are added to the subset list for special purposes, with the explicit
versions or the RISCV_UNKNOWN_VERSION versions.
(riscv_parse_add_subset): If we do care the versions of the extension,
and the versions are unknown, then report errors for the non-implicit
extensions, and return directly for the implicit one.
(riscv_arch_str1): Do not output i extension after e, and the extensions
which versions are unknown.
gas/
* config/tc-riscv.c (riscv_multi_subset_supports): Handle INSN_CLASS_ZICSR
and INSN_CLASS_ZIFENCEI.
* testsuite/gas/riscv/march-imply-i.s: New testcase.
* testsuite/gas/riscv/march-imply-i2p0-01.d: New testcase. The version
of i is less than 2.1, and zi* are supported in the chosen spec, so
enable the fence.i and csr instructions, also output the implicit zi* to
the arch string.
* testsuite/gas/riscv/march-imply-i2p0-02.d: Likewise, but the zi* are
not supported in the spec 2.2. Enable the related instructions since
i's version is less than 2.1, but do not output them.
* testsuite/gas/riscv/march-imply-i2p1-01.d: New testcase. The version
of i is 2.1, so don't add it's implicit zi*, and disable the related
instructions.
* testsuite/gas/riscv/march-imply-i2p1-01.l: Likewise.
* testsuite/gas/riscv/march-imply-i2p1-02.d: Likewise, and set the zi*
explicitly, so enable the related instructions.
* testsuite/gas/riscv/march-imply-i2p0.d: Removed.
* testsuite/gas/riscv/march-imply-i2p1.d: Removed.
include/
* opcode/riscv.h: Add INSN_CLASS_ZICSR and INSN_CLASS_ZIFENCEI.
opcodes/
* riscv-opc.c (riscv_opcodes): Control fence.i and csr instructions by
zifencei and zicsr.
---
bfd/elfxx-riscv.c | 59 ++++++++++++++++++---------
gas/config/tc-riscv.c | 14 +++++--
gas/testsuite/gas/riscv/march-imply-i.s | 24 +++++++++++
gas/testsuite/gas/riscv/march-imply-i2p0-01.d | 7 ++++
gas/testsuite/gas/riscv/march-imply-i2p0-02.d | 7 ++++
gas/testsuite/gas/riscv/march-imply-i2p0.d | 6 ---
gas/testsuite/gas/riscv/march-imply-i2p1-01.d | 3 ++
gas/testsuite/gas/riscv/march-imply-i2p1-01.l | 21 ++++++++++
gas/testsuite/gas/riscv/march-imply-i2p1-02.d | 7 ++++
gas/testsuite/gas/riscv/march-imply-i2p1.d | 6 ---
include/opcode/riscv.h | 6 ++-
opcodes/riscv-opc.c | 40 +++++++++---------
12 files changed, 142 insertions(+), 58 deletions(-)
create mode 100644 gas/testsuite/gas/riscv/march-imply-i.s
create mode 100644 gas/testsuite/gas/riscv/march-imply-i2p0-01.d
create mode 100644 gas/testsuite/gas/riscv/march-imply-i2p0-02.d
delete mode 100644 gas/testsuite/gas/riscv/march-imply-i2p0.d
create mode 100644 gas/testsuite/gas/riscv/march-imply-i2p1-01.d
create mode 100644 gas/testsuite/gas/riscv/march-imply-i2p1-01.l
create mode 100644 gas/testsuite/gas/riscv/march-imply-i2p1-02.d
delete mode 100644 gas/testsuite/gas/riscv/march-imply-i2p1.d
diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index 0696780..35e46fa 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1148,6 +1148,21 @@ riscv_add_implicit_subset (riscv_subset_list_t *subset_list,
}
}
+/* These extensions are added to the subset list for special purposes,
+ with the explicit versions or the RISCV_UNKNOWN_VERSION versions.
+ Therefore, we won't output them to the output arch string in the
+ riscv_arch_str1, if the versions are unknown. */
+
+static bfd_boolean
+riscv_ext_dont_care_version (const char *subset)
+{
+ if (strcmp (subset, "g") == 0
+ || strcmp (subset, "zicsr") == 0
+ || strcmp (subset, "zifencei") == 0)
+ return TRUE;
+ return FALSE;
+}
+
/* We have to add all arch string extensions first, and then start to
add their implicit extensions. The arch string extensions must be
set in order, so we can add them to the last of the subset list
@@ -1172,11 +1187,15 @@ riscv_parse_add_subset (riscv_parse_subset_t *rps,
&& rps->get_default_version != NULL)
rps->get_default_version (subset, &major_version, &minor_version);
- if (!implicit
- && strcmp (subset, "g") != 0
+ if (!riscv_ext_dont_care_version (subset)
&& (major_version == RISCV_UNKNOWN_VERSION
|| minor_version == RISCV_UNKNOWN_VERSION))
{
+ /* We only add the implicit extension if it is supported in the
+ chosen ISA spec. */
+ if (implicit)
+ return;
+
if (subset[0] == 'x')
rps->error_handler
(_("x ISA extension `%s' must be set with the versions"),
@@ -1191,10 +1210,7 @@ riscv_parse_add_subset (riscv_parse_subset_t *rps,
if (!implicit)
riscv_add_subset (rps->subset_list, subset,
major_version, minor_version);
- else if (major_version != RISCV_UNKNOWN_VERSION
- && minor_version != RISCV_UNKNOWN_VERSION)
- /* We only add the implicit extension if it is supported in the
- chosen ISA spec. */
+ else
riscv_add_implicit_subset (rps->subset_list, subset,
major_version, minor_version);
}
@@ -1907,31 +1923,34 @@ riscv_arch_str1 (riscv_subset_t *subset,
char *attr_str, char *buf, size_t bufsz)
{
const char *underline = "_";
+ riscv_subset_t *subset_t = subset;
- if (subset == NULL)
+ if (subset_t == NULL)
return;
/* No underline between rvXX and i/e. */
- if ((strcasecmp (subset->name, "i") == 0)
- || (strcasecmp (subset->name, "e") == 0))
+ if ((strcasecmp (subset_t->name, "i") == 0)
+ || (strcasecmp (subset_t->name, "e") == 0))
underline = "";
snprintf (buf, bufsz, "%s%s%dp%d",
underline,
- subset->name,
- subset->major_version,
- subset->minor_version);
+ subset_t->name,
+ subset_t->major_version,
+ subset_t->minor_version);
strncat (attr_str, buf, bufsz);
- /* Skip 'i' extension after 'e', and skip 'g' extension. */
- if (subset->next
- && ((strcmp (subset->name, "e") == 0
- && strcmp (subset->next->name, "i") == 0)
- || strcmp (subset->next->name, "g") == 0))
- riscv_arch_str1 (subset->next->next, attr_str, buf, bufsz);
- else
- riscv_arch_str1 (subset->next, attr_str, buf, bufsz);
+ /* Skip 'i' extension after 'e', or skip extensions which
+ versions are unknown. */
+ while (subset_t->next
+ && ((strcmp (subset_t->name, "e") == 0
+ && strcmp (subset_t->next->name, "i") == 0)
+ || subset_t->next->major_version == RISCV_UNKNOWN_VERSION
+ || subset_t->next->minor_version == RISCV_UNKNOWN_VERSION))
+ subset_t = subset_t->next;
+
+ riscv_arch_str1 (subset_t->next, attr_str, buf, bufsz);
}
/* Convert subset info to string with explicit version info. */
diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index 5e140fe..dfdbadf 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -237,13 +237,19 @@ riscv_multi_subset_supports (enum riscv_insn_class insn_class)
case INSN_CLASS_M: return riscv_subset_supports ("m");
case INSN_CLASS_F: return riscv_subset_supports ("f");
case INSN_CLASS_D: return riscv_subset_supports ("d");
- case INSN_CLASS_D_AND_C:
- return riscv_subset_supports ("d") && riscv_subset_supports ("c");
+ case INSN_CLASS_Q: return riscv_subset_supports ("q");
case INSN_CLASS_F_AND_C:
- return riscv_subset_supports ("f") && riscv_subset_supports ("c");
+ return (riscv_subset_supports ("f")
+ && riscv_subset_supports ("c"));
+ case INSN_CLASS_D_AND_C:
+ return (riscv_subset_supports ("d")
+ && riscv_subset_supports ("c"));
- case INSN_CLASS_Q: return riscv_subset_supports ("q");
+ case INSN_CLASS_ZICSR:
+ return riscv_subset_supports ("zicsr");
+ case INSN_CLASS_ZIFENCEI:
+ return riscv_subset_supports ("zifencei");
default:
as_fatal ("Unreachable");
diff --git a/gas/testsuite/gas/riscv/march-imply-i.s b/gas/testsuite/gas/riscv/march-imply-i.s
new file mode 100644
index 0000000..b65c3c3
--- /dev/null
+++ b/gas/testsuite/gas/riscv/march-imply-i.s
@@ -0,0 +1,24 @@
+target:
+ # zicsr
+ csrr t0, ustatus
+ csrwi ustatus, 0x0
+ csrsi ustatus, 0x0
+ csrci ustatus, 0x0
+ csrw ustatus, t0
+ csrw ustatus, 0x0
+ csrs ustatus, t0
+ csrs ustatus, 0x0
+ csrc ustatus, t0
+ csrc ustatus, 0x0
+ csrrwi t0, ustatus, 0x0
+ csrrsi t0, ustatus, 0x0
+ csrrci t0, ustatus, 0x0
+ csrrw t0, ustatus, t0
+ csrrw t0, ustatus, 0x0
+ csrrs t0, ustatus, t0
+ csrrs t0, ustatus, 0x0
+ csrrc t0, ustatus, t0
+ csrrc t0, ustatus, 0x0
+
+ # zifencei
+ fence.i
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p0-01.d b/gas/testsuite/gas/riscv/march-imply-i2p0-01.d
new file mode 100644
index 0000000..6d86034
--- /dev/null
+++ b/gas/testsuite/gas/riscv/march-imply-i2p0-01.d
@@ -0,0 +1,7 @@
+#as: -march=rv32i2p0 -march-attr -misa-spec=20191213
+#readelf: -A
+#source: march-imply-i.s
+Attribute Section: riscv
+File Attributes
+ Tag_RISCV_arch: "rv32i2p0_zicsr2p0_zifencei2p0"
+#...
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p0-02.d b/gas/testsuite/gas/riscv/march-imply-i2p0-02.d
new file mode 100644
index 0000000..7686296
--- /dev/null
+++ b/gas/testsuite/gas/riscv/march-imply-i2p0-02.d
@@ -0,0 +1,7 @@
+#as: -march=rv32i -march-attr -misa-spec=2.2
+#readelf: -A
+#source: march-imply-i.s
+Attribute Section: riscv
+File Attributes
+ Tag_RISCV_arch: "rv32i2p0"
+#...
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p0.d b/gas/testsuite/gas/riscv/march-imply-i2p0.d
deleted file mode 100644
index 17fcc7a..0000000
--- a/gas/testsuite/gas/riscv/march-imply-i2p0.d
+++ /dev/null
@@ -1,6 +0,0 @@
-#as: -march=rv32i2p0 -march-attr -misa-spec=20191213
-#readelf: -A
-#source: empty.s
-Attribute Section: riscv
-File Attributes
- Tag_RISCV_arch: "rv32i2p0_zicsr2p0_zifencei2p0"
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p1-01.d b/gas/testsuite/gas/riscv/march-imply-i2p1-01.d
new file mode 100644
index 0000000..fcf22ed
--- /dev/null
+++ b/gas/testsuite/gas/riscv/march-imply-i2p1-01.d
@@ -0,0 +1,3 @@
+#as: -march=rv32i -march-attr -misa-spec=20191213
+#source: march-imply-i.s
+#error_output: march-imply-i2p1-01.l
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p1-01.l b/gas/testsuite/gas/riscv/march-imply-i2p1-01.l
new file mode 100644
index 0000000..b54d4ae
--- /dev/null
+++ b/gas/testsuite/gas/riscv/march-imply-i2p1-01.l
@@ -0,0 +1,21 @@
+.*Assembler messages:
+.*Error: unrecognized opcode `csrr t0,ustatus'
+.*Error: unrecognized opcode `csrwi ustatus,0x0'
+.*Error: unrecognized opcode `csrsi ustatus,0x0'
+.*Error: unrecognized opcode `csrci ustatus,0x0'
+.*Error: unrecognized opcode `csrw ustatus,t0'
+.*Error: unrecognized opcode `csrw ustatus,0x0'
+.*Error: unrecognized opcode `csrs ustatus,t0'
+.*Error: unrecognized opcode `csrs ustatus,0x0'
+.*Error: unrecognized opcode `csrc ustatus,t0'
+.*Error: unrecognized opcode `csrc ustatus,0x0'
+.*Error: unrecognized opcode `csrrwi t0,ustatus,0x0'
+.*Error: unrecognized opcode `csrrsi t0,ustatus,0x0'
+.*Error: unrecognized opcode `csrrci t0,ustatus,0x0'
+.*Error: unrecognized opcode `csrrw t0,ustatus,t0'
+.*Error: unrecognized opcode `csrrw t0,ustatus,0x0'
+.*Error: unrecognized opcode `csrrs t0,ustatus,t0'
+.*Error: unrecognized opcode `csrrs t0,ustatus,0x0'
+.*Error: unrecognized opcode `csrrc t0,ustatus,t0'
+.*Error: unrecognized opcode `csrrc t0,ustatus,0x0'
+.*Error: unrecognized opcode `fence.i'
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p1-02.d b/gas/testsuite/gas/riscv/march-imply-i2p1-02.d
new file mode 100644
index 0000000..b8065b6
--- /dev/null
+++ b/gas/testsuite/gas/riscv/march-imply-i2p1-02.d
@@ -0,0 +1,7 @@
+#as: -march=rv32i_zicsr_zifencei -march-attr -misa-spec=20191213
+#readelf: -A
+#source: march-imply-i.s
+Attribute Section: riscv
+File Attributes
+ Tag_RISCV_arch: "rv32i2p1_zicsr2p0_zifencei2p0"
+#...
diff --git a/gas/testsuite/gas/riscv/march-imply-i2p1.d b/gas/testsuite/gas/riscv/march-imply-i2p1.d
deleted file mode 100644
index 0e9a464..0000000
--- a/gas/testsuite/gas/riscv/march-imply-i2p1.d
+++ /dev/null
@@ -1,6 +0,0 @@
-#as: -march=rv32i -march-attr -misa-spec=20191213
-#readelf: -A
-#source: empty.s
-Attribute Section: riscv
-File Attributes
- Tag_RISCV_arch: "rv32i2p1"
diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h
index 680780a..6a9fd4a 100644
--- a/include/opcode/riscv.h
+++ b/include/opcode/riscv.h
@@ -306,9 +306,11 @@ enum riscv_insn_class
INSN_CLASS_M,
INSN_CLASS_F,
INSN_CLASS_D,
- INSN_CLASS_D_AND_C,
- INSN_CLASS_F_AND_C,
INSN_CLASS_Q,
+ INSN_CLASS_F_AND_C,
+ INSN_CLASS_D_AND_C,
+ INSN_CLASS_ZICSR,
+ INSN_CLASS_ZIFENCEI,
};
/* This structure holds information for a particular instruction. */
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 7ca44dc..4d9ba36 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -345,7 +345,7 @@ const struct riscv_opcode riscv_opcodes[] =
{"sw", 0, INSN_CLASS_I, "t,A,s", 0, (int) M_SW, match_never, INSN_MACRO },
{"fence", 0, INSN_CLASS_I, "", MATCH_FENCE | MASK_PRED | MASK_SUCC, MASK_FENCE | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, INSN_ALIAS },
{"fence", 0, INSN_CLASS_I, "P,Q", MATCH_FENCE, MASK_FENCE | MASK_RD | MASK_RS1 | (MASK_IMM & ~MASK_PRED & ~MASK_SUCC), match_opcode, 0 },
-{"fence.i", 0, INSN_CLASS_I, "", MATCH_FENCE_I, MASK_FENCE | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, 0 },
+{"fence.i", 0, INSN_CLASS_ZIFENCEI, "", MATCH_FENCE_I, MASK_FENCE | MASK_RD | MASK_RS1 | MASK_IMM, match_opcode, 0 },
{"fence.tso", 0, INSN_CLASS_I, "", MATCH_FENCE_TSO, MASK_FENCE_TSO | MASK_RD | MASK_RS1, match_opcode, INSN_ALIAS },
{"rdcycle", 0, INSN_CLASS_I, "d", MATCH_RDCYCLE, MASK_RDCYCLE, match_opcode, INSN_ALIAS },
{"rdinstret", 0, INSN_CLASS_I, "d", MATCH_RDINSTRET, MASK_RDINSTRET, match_opcode, INSN_ALIAS },
@@ -749,25 +749,25 @@ const struct riscv_opcode riscv_opcodes[] =
{"c.fsw", 32, INSN_CLASS_F_AND_C, "CD,Ck(Cs)", MATCH_C_FSW, MASK_C_FSW, match_opcode, INSN_DREF|INSN_4_BYTE },
/* Supervisor instructions */
-{"csrr", 0, INSN_CLASS_I, "d,E", MATCH_CSRRS, MASK_CSRRS | MASK_RS1, match_opcode, INSN_ALIAS },
-{"csrwi", 0, INSN_CLASS_I, "E,Z", MATCH_CSRRWI, MASK_CSRRWI | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrsi", 0, INSN_CLASS_I, "E,Z", MATCH_CSRRSI, MASK_CSRRSI | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrci", 0, INSN_CLASS_I, "E,Z", MATCH_CSRRCI, MASK_CSRRCI | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrw", 0, INSN_CLASS_I, "E,s", MATCH_CSRRW, MASK_CSRRW | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrw", 0, INSN_CLASS_I, "E,Z", MATCH_CSRRWI, MASK_CSRRWI | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrs", 0, INSN_CLASS_I, "E,s", MATCH_CSRRS, MASK_CSRRS | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrs", 0, INSN_CLASS_I, "E,Z", MATCH_CSRRSI, MASK_CSRRSI | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrc", 0, INSN_CLASS_I, "E,s", MATCH_CSRRC, MASK_CSRRC | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrc", 0, INSN_CLASS_I, "E,Z", MATCH_CSRRCI, MASK_CSRRCI | MASK_RD, match_opcode, INSN_ALIAS },
-{"csrrwi", 0, INSN_CLASS_I, "d,E,Z", MATCH_CSRRWI, MASK_CSRRWI, match_opcode, 0 },
-{"csrrsi", 0, INSN_CLASS_I, "d,E,Z", MATCH_CSRRSI, MASK_CSRRSI, match_opcode, 0 },
-{"csrrci", 0, INSN_CLASS_I, "d,E,Z", MATCH_CSRRCI, MASK_CSRRCI, match_opcode, 0 },
-{"csrrw", 0, INSN_CLASS_I, "d,E,s", MATCH_CSRRW, MASK_CSRRW, match_opcode, 0 },
-{"csrrw", 0, INSN_CLASS_I, "d,E,Z", MATCH_CSRRWI, MASK_CSRRWI, match_opcode, INSN_ALIAS },
-{"csrrs", 0, INSN_CLASS_I, "d,E,s", MATCH_CSRRS, MASK_CSRRS, match_opcode, 0 },
-{"csrrs", 0, INSN_CLASS_I, "d,E,Z", MATCH_CSRRSI, MASK_CSRRSI, match_opcode, INSN_ALIAS },
-{"csrrc", 0, INSN_CLASS_I, "d,E,s", MATCH_CSRRC, MASK_CSRRC, match_opcode, 0 },
-{"csrrc", 0, INSN_CLASS_I, "d,E,Z", MATCH_CSRRCI, MASK_CSRRCI, match_opcode, INSN_ALIAS },
+{"csrr", 0, INSN_CLASS_ZICSR, "d,E", MATCH_CSRRS, MASK_CSRRS | MASK_RS1, match_opcode, INSN_ALIAS },
+{"csrwi", 0, INSN_CLASS_ZICSR, "E,Z", MATCH_CSRRWI, MASK_CSRRWI | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrsi", 0, INSN_CLASS_ZICSR, "E,Z", MATCH_CSRRSI, MASK_CSRRSI | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrci", 0, INSN_CLASS_ZICSR, "E,Z", MATCH_CSRRCI, MASK_CSRRCI | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrw", 0, INSN_CLASS_ZICSR, "E,s", MATCH_CSRRW, MASK_CSRRW | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrw", 0, INSN_CLASS_ZICSR, "E,Z", MATCH_CSRRWI, MASK_CSRRWI | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrs", 0, INSN_CLASS_ZICSR, "E,s", MATCH_CSRRS, MASK_CSRRS | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrs", 0, INSN_CLASS_ZICSR, "E,Z", MATCH_CSRRSI, MASK_CSRRSI | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrc", 0, INSN_CLASS_ZICSR, "E,s", MATCH_CSRRC, MASK_CSRRC | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrc", 0, INSN_CLASS_ZICSR, "E,Z", MATCH_CSRRCI, MASK_CSRRCI | MASK_RD, match_opcode, INSN_ALIAS },
+{"csrrwi", 0, INSN_CLASS_ZICSR, "d,E,Z", MATCH_CSRRWI, MASK_CSRRWI, match_opcode, 0 },
+{"csrrsi", 0, INSN_CLASS_ZICSR, "d,E,Z", MATCH_CSRRSI, MASK_CSRRSI, match_opcode, 0 },
+{"csrrci", 0, INSN_CLASS_ZICSR, "d,E,Z", MATCH_CSRRCI, MASK_CSRRCI, match_opcode, 0 },
+{"csrrw", 0, INSN_CLASS_ZICSR, "d,E,s", MATCH_CSRRW, MASK_CSRRW, match_opcode, 0 },
+{"csrrw", 0, INSN_CLASS_ZICSR, "d,E,Z", MATCH_CSRRWI, MASK_CSRRWI, match_opcode, INSN_ALIAS },
+{"csrrs", 0, INSN_CLASS_ZICSR, "d,E,s", MATCH_CSRRS, MASK_CSRRS, match_opcode, 0 },
+{"csrrs", 0, INSN_CLASS_ZICSR, "d,E,Z", MATCH_CSRRSI, MASK_CSRRSI, match_opcode, INSN_ALIAS },
+{"csrrc", 0, INSN_CLASS_ZICSR, "d,E,s", MATCH_CSRRC, MASK_CSRRC, match_opcode, 0 },
+{"csrrc", 0, INSN_CLASS_ZICSR, "d,E,Z", MATCH_CSRRCI, MASK_CSRRCI, match_opcode, INSN_ALIAS },
{"uret", 0, INSN_CLASS_I, "", MATCH_URET, MASK_URET, match_opcode, 0 },
{"sret", 0, INSN_CLASS_I, "", MATCH_SRET, MASK_SRET, match_opcode, 0 },
{"hret", 0, INSN_CLASS_I, "", MATCH_HRET, MASK_HRET, match_opcode, 0 },
--
2.7.4
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