* [binutils-gdb] RISC-V: Add T-Head FMemIdx vendor extension
@ 2022-09-22 16:43 Philipp Tomsich
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From: Philipp Tomsich @ 2022-09-22 16:43 UTC (permalink / raw)
To: bfd-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f511f80fa3fcaf6bcbe727fb902b8bd5ec8f9c20
commit f511f80fa3fcaf6bcbe727fb902b8bd5ec8f9c20
Author: Christoph Müllner <christoph.muellner@vrull.eu>
Date: Tue Jun 28 17:44:57 2022 +0200
RISC-V: Add T-Head FMemIdx vendor extension
T-Head has a range of vendor-specific instructions.
Therefore it makes sense to group them into smaller chunks
in form of vendor extensions.
This patch adds the XTheadFMemIdx extension, a collection of
T-Head-specific floating-point memory access instructions.
The 'th' prefix and the "XTheadFMemIdx" extension are documented
in a PR for the RISC-V toolchain conventions ([1]).
[1] https://github.com/riscv-non-isa/riscv-toolchain-conventions/pull/19
Co-developed-by: Lifang Xia <lifang_xia@linux.alibaba.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Diff:
---
bfd/elfxx-riscv.c | 5 +++++
gas/doc/c-riscv.texi | 5 +++++
gas/testsuite/gas/riscv/x-thead-fmemidx-fail.d | 3 +++
gas/testsuite/gas/riscv/x-thead-fmemidx-fail.l | 18 ++++++++++++++++++
gas/testsuite/gas/riscv/x-thead-fmemidx-fail.s | 17 +++++++++++++++++
gas/testsuite/gas/riscv/x-thead-fmemidx.d | 25 +++++++++++++++++++++++++
gas/testsuite/gas/riscv/x-thead-fmemidx.s | 17 +++++++++++++++++
include/opcode/riscv-opc.h | 26 ++++++++++++++++++++++++++
include/opcode/riscv.h | 1 +
opcodes/riscv-opc.c | 10 ++++++++++
10 files changed, 127 insertions(+)
diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index 41f7849abb1..d8f68fa2b50 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1229,6 +1229,7 @@ static struct riscv_supported_ext riscv_supported_vendor_x_ext[] =
{"xtheadbs", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"xtheadcmo", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"xtheadcondmov", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
+ {"xtheadfmemidx", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"xtheadmac", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{"xtheadsync", ISA_SPEC_CLASS_DRAFT, 1, 0, 0 },
{NULL, 0, 0, 0, 0}
@@ -2403,6 +2404,8 @@ riscv_multi_subset_supports (riscv_parse_subset_t *rps,
return riscv_subset_supports (rps, "xtheadcmo");
case INSN_CLASS_XTHEADCONDMOV:
return riscv_subset_supports (rps, "xtheadcondmov");
+ case INSN_CLASS_XTHEADFMEMIDX:
+ return riscv_subset_supports (rps, "xtheadfmemidx");
case INSN_CLASS_XTHEADMAC:
return riscv_subset_supports (rps, "xtheadmac");
case INSN_CLASS_XTHEADSYNC:
@@ -2544,6 +2547,8 @@ riscv_multi_subset_supports_ext (riscv_parse_subset_t *rps,
return "xtheadcmo";
case INSN_CLASS_XTHEADCONDMOV:
return "xtheadcondmov";
+ case INSN_CLASS_XTHEADFMEMIDX:
+ return "xtheadfmemidx";
case INSN_CLASS_XTHEADMAC:
return "xtheadmac";
case INSN_CLASS_XTHEADSYNC:
diff --git a/gas/doc/c-riscv.texi b/gas/doc/c-riscv.texi
index 401f7e443c2..392be0e7e21 100644
--- a/gas/doc/c-riscv.texi
+++ b/gas/doc/c-riscv.texi
@@ -729,6 +729,11 @@ The XTheadCondMov extension provides instructions for conditional moves.
It is documented in @url{https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.0.0/xthead-2022-09-05-2.0.0.pdf}.
+@item XTheadFMemIdx
+The XTheadFMemIdx extension provides floating-point memory operations.
+
+It is documented in @url{https://github.com/T-head-Semi/thead-extension-spec/releases/download/2.0.0/xthead-2022-09-05-2.0.0.pdf}.
+
@item XTheadMac
The XTheadMac extension provides multiply-accumulate instructions.
diff --git a/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.d b/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.d
new file mode 100644
index 00000000000..a32e81eec46
--- /dev/null
+++ b/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.d
@@ -0,0 +1,3 @@
+#as: -march=rv64i_xtheadfmemidx
+#source: x-thead-fmemidx-fail.s
+#error_output: x-thead-fmemidx-fail.l
diff --git a/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.l b/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.l
new file mode 100644
index 00000000000..ef28f047b41
--- /dev/null
+++ b/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.l
@@ -0,0 +1,18 @@
+.*: Assembler messages:
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+.*: Error: improper immediate value \(18446744073709551615\)
+.*: Error: improper immediate value \(4\)
+
diff --git a/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.s b/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.s
new file mode 100644
index 00000000000..e486c6a1423
--- /dev/null
+++ b/gas/testsuite/gas/riscv/x-thead-fmemidx-fail.s
@@ -0,0 +1,17 @@
+target:
+ th.flrd a0, a1, a2, -1
+ th.flrd a0, a1, a2, 4
+ th.flrw a0, a1, a2, -1
+ th.flrw a0, a1, a2, 4
+ th.flurd a0, a1, a2, -1
+ th.flurd a0, a1, a2, 4
+ th.flurw a0, a1, a2, -1
+ th.flurw a0, a1, a2, 4
+ th.fsrd a0, a1, a2, -1
+ th.fsrd a0, a1, a2, 4
+ th.fsrw a0, a1, a2, -1
+ th.fsrw a0, a1, a2, 4
+ th.fsurd a0, a1, a2, -1
+ th.fsurd a0, a1, a2, 4
+ th.fsurw a0, a1, a2, -1
+ th.fsurw a0, a1, a2, 4
diff --git a/gas/testsuite/gas/riscv/x-thead-fmemidx.d b/gas/testsuite/gas/riscv/x-thead-fmemidx.d
new file mode 100644
index 00000000000..dfa477c8fc4
--- /dev/null
+++ b/gas/testsuite/gas/riscv/x-thead-fmemidx.d
@@ -0,0 +1,25 @@
+#as: -march=rv64i_xtheadfmemidx
+#source: x-thead-fmemidx.s
+#objdump: -dr
+
+.*:[ ]+file format .*
+
+Disassembly of section .text:
+
+0+000 <target>:
+[ ]+[0-9a-f]+:[ ]+60c5e50b[ ]+th.flrd[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+66c5e50b[ ]+th.flrd[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+40c5e50b[ ]+th.flrw[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+46c5e50b[ ]+th.flrw[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+70c5e50b[ ]+th.flurd[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+76c5e50b[ ]+th.flurd[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+50c5e50b[ ]+th.flurw[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+56c5e50b[ ]+th.flurw[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+60c5f50b[ ]+th.fsrd[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+66c5f50b[ ]+th.fsrd[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+40c5f50b[ ]+th.fsrw[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+46c5f50b[ ]+th.fsrw[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+70c5f50b[ ]+th.fsurd[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+76c5f50b[ ]+th.fsurd[ ]+a0,a1,a2,3
+[ ]+[0-9a-f]+:[ ]+50c5f50b[ ]+th.fsurw[ ]+a0,a1,a2,0
+[ ]+[0-9a-f]+:[ ]+56c5f50b[ ]+th.fsurw[ ]+a0,a1,a2,3
diff --git a/gas/testsuite/gas/riscv/x-thead-fmemidx.s b/gas/testsuite/gas/riscv/x-thead-fmemidx.s
new file mode 100644
index 00000000000..0d70bb7e799
--- /dev/null
+++ b/gas/testsuite/gas/riscv/x-thead-fmemidx.s
@@ -0,0 +1,17 @@
+target:
+ th.flrd a0, a1, a2, 0
+ th.flrd a0, a1, a2, 3
+ th.flrw a0, a1, a2, 0
+ th.flrw a0, a1, a2, 3
+ th.flurd a0, a1, a2, 0
+ th.flurd a0, a1, a2, 3
+ th.flurw a0, a1, a2, 0
+ th.flurw a0, a1, a2, 3
+ th.fsrd a0, a1, a2, 0
+ th.fsrd a0, a1, a2, 3
+ th.fsrw a0, a1, a2, 0
+ th.fsrw a0, a1, a2, 3
+ th.fsurd a0, a1, a2, 0
+ th.fsurd a0, a1, a2, 3
+ th.fsurw a0, a1, a2, 0
+ th.fsurw a0, a1, a2, 3
diff --git a/include/opcode/riscv-opc.h b/include/opcode/riscv-opc.h
index b504ce019b6..ecba9f51c84 100644
--- a/include/opcode/riscv-opc.h
+++ b/include/opcode/riscv-opc.h
@@ -2186,6 +2186,23 @@
#define MASK_TH_MVEQZ 0xfe00707f
#define MATCH_TH_MVNEZ 0x4200100b
#define MASK_TH_MVNEZ 0xfe00707f
+/* Vendor-specific (T-Head) XTheadFMemIdx instructions. */
+#define MATCH_TH_FLRD 0x6000600b
+#define MASK_TH_FLRD 0xf800707f
+#define MATCH_TH_FLRW 0x4000600b
+#define MASK_TH_FLRW 0xf800707f
+#define MATCH_TH_FLURD 0x7000600b
+#define MASK_TH_FLURD 0xf800707f
+#define MATCH_TH_FLURW 0x5000600b
+#define MASK_TH_FLURW 0xf800707f
+#define MATCH_TH_FSRD 0x6000700b
+#define MASK_TH_FSRD 0xf800707f
+#define MATCH_TH_FSRW 0x4000700b
+#define MASK_TH_FSRW 0xf800707f
+#define MATCH_TH_FSURD 0x7000700b
+#define MASK_TH_FSURD 0xf800707f
+#define MATCH_TH_FSURW 0x5000700b
+#define MASK_TH_FSURW 0xf800707f
/* Vendor-specific (T-Head) XTheadMac instructions. */
#define MATCH_TH_MULA 0x2000100b
#define MASK_TH_MULA 0xfe00707f
@@ -2988,6 +3005,15 @@ DECLARE_INSN(th_l2cache_iall, MATCH_TH_L2CACHE_IALL, MASK_TH_L2CACHE_IALL)
/* Vendor-specific (T-Head) XTheadCondMov instructions. */
DECLARE_INSN(th_mveqz, MATCH_TH_MVEQZ, MASK_TH_MVEQZ)
DECLARE_INSN(th_mvnez, MATCH_TH_MVNEZ, MASK_TH_MVNEZ)
+/* Vendor-specific (T-Head) XTheadFMemIdx instructions. */
+DECLARE_INSN(th_flrd, MATCH_TH_FLRD, MASK_TH_FLRD)
+DECLARE_INSN(th_flrw, MATCH_TH_FLRW, MASK_TH_FLRW)
+DECLARE_INSN(th_flurd, MATCH_TH_FLURD, MASK_TH_FLURD)
+DECLARE_INSN(th_flurw, MATCH_TH_FLURW, MASK_TH_FLURW)
+DECLARE_INSN(th_fsrd, MATCH_TH_FSRD, MASK_TH_FSRD)
+DECLARE_INSN(th_fsrw, MATCH_TH_FSRW, MASK_TH_FSRW)
+DECLARE_INSN(th_fsurd, MATCH_TH_FSURD, MASK_TH_FSURD)
+DECLARE_INSN(th_fsurw, MATCH_TH_FSURW, MASK_TH_FSURW)
/* Vendor-specific (T-Head) XTheadMac instructions. */
DECLARE_INSN(th_mula, MATCH_TH_MULA, MASK_TH_MULA)
DECLARE_INSN(th_mulah, MATCH_TH_MULAH, MASK_TH_MULAH)
diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h
index 854269a9d98..1b7de3cb142 100644
--- a/include/opcode/riscv.h
+++ b/include/opcode/riscv.h
@@ -420,6 +420,7 @@ enum riscv_insn_class
INSN_CLASS_XTHEADBS,
INSN_CLASS_XTHEADCMO,
INSN_CLASS_XTHEADCONDMOV,
+ INSN_CLASS_XTHEADFMEMIDX,
INSN_CLASS_XTHEADMAC,
INSN_CLASS_XTHEADSYNC,
};
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 5d5298923c8..6c1c4c9a1ad 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -1871,6 +1871,16 @@ const struct riscv_opcode riscv_opcodes[] =
{"th.mveqz", 0, INSN_CLASS_XTHEADCONDMOV, "d,s,t", MATCH_TH_MVEQZ, MASK_TH_MVEQZ, match_opcode, 0},
{"th.mvnez", 0, INSN_CLASS_XTHEADCONDMOV, "d,s,t", MATCH_TH_MVNEZ, MASK_TH_MVNEZ, match_opcode, 0},
+/* Vendor-specific (T-Head) XTheadFMemIdx instructions. */
+{"th.flrd", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FLRD, MASK_TH_FLRD, match_opcode, 0},
+{"th.flrw", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FLRW, MASK_TH_FLRW, match_opcode, 0},
+{"th.flurd", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FLURD, MASK_TH_FLURD, match_opcode, 0},
+{"th.flurw", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FLURW, MASK_TH_FLURW, match_opcode, 0},
+{"th.fsrd", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FSRD, MASK_TH_FSRD, match_opcode, 0},
+{"th.fsrw", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FSRW, MASK_TH_FSRW, match_opcode, 0},
+{"th.fsurd", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FSURD, MASK_TH_FSURD, match_opcode, 0},
+{"th.fsurw", 0, INSN_CLASS_XTHEADFMEMIDX, "d,s,t,Xu2@25", MATCH_TH_FSURW, MASK_TH_FSURW, match_opcode, 0},
+
/* Vendor-specific (T-Head) XTheadMac instructions. */
{"th.mula", 0, INSN_CLASS_XTHEADMAC, "d,s,t", MATCH_TH_MULA, MASK_TH_MULA, match_opcode, 0},
{"th.mulah", 0, INSN_CLASS_XTHEADMAC, "d,s,t", MATCH_TH_MULAH, MASK_TH_MULAH, match_opcode, 0},
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