[PATCH v6 1/7] ppc/svp64: support LibreSOC architecture

[Dmitry Selyutin <ghostmansd@gmail.com>]

This patch adds support for LibreSOC machine and SVP64 extension flag
for PowerPC architecture. SV (Simple-V) is a strict RISC-paradigm
Scalable Vector Extension for the Power ISA. SVP64 is the 64-bit
Prefixed instruction format implementing SV. Funded by NLnet through EU
Grants No: 825310 and 825322, SV is in DRAFT form and is to be publicly
submitted via the OpenPOWER Foundation ISA Working Group via the
newly-created External RFC Process.

For more details, visit https://libre-soc.org.
---
 gas/config/tc-ppc.c  | 2 ++
 include/opcode/ppc.h | 3 +++
 opcodes/ppc-dis.c    | 5 +++++
 opcodes/ppc-opc.c    | 1 +
 4 files changed, 11 insertions(+)

diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 452fab1cbf..ffc99857e3 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -1382,6 +1382,8 @@ PowerPC options:\n"));
   fprintf (stream, _("\
 -mpower10, -mpwr10      generate code for Power10 architecture\n"));
   fprintf (stream, _("\
+-mlibresoc              generate code for Libre-SOC architecture\n"));
+  fprintf (stream, _("\
 -mcell                  generate code for Cell Broadband Engine architecture\n"));
   fprintf (stream, _("\
 -mcom                   generate code for Power/PowerPC common instructions\n"));
diff --git a/include/opcode/ppc.h b/include/opcode/ppc.h
index 7bc6ee216e..d5752a42e6 100644
--- a/include/opcode/ppc.h
+++ b/include/opcode/ppc.h
@@ -237,6 +237,9 @@ extern const unsigned int spe2_num_opcodes;
 /* Opcode is only supported by power10 architecture.  */
 #define PPC_OPCODE_POWER10  0x400000000000ull
 
+/* Opcode is only supported by SVP64 extensions (LibreSOC architecture).  */
+#define PPC_OPCODE_SVP64	 0x800000000000ull
+
 /* A macro to extract the major opcode from an instruction.  */
 #define PPC_OP(i) (((i) >> 26) & 0x3f)
 
diff --git a/opcodes/ppc-dis.c b/opcodes/ppc-dis.c
index 45e8faeef5..f61e6518f1 100644
--- a/opcodes/ppc-dis.c
+++ b/opcodes/ppc-dis.c
@@ -200,6 +200,11 @@ struct ppc_mopt ppc_opts[] = {
 		| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9
 		| PPC_OPCODE_POWER10 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX),
     0 },
+  { "libresoc",  (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
+		| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
+		| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9
+		| PPC_OPCODE_ALTIVEC | PPC_OPCODE_VSX | PPC_OPCODE_SVP64),
+    0 },
   { "future",  (PPC_OPCODE_PPC | PPC_OPCODE_ISEL | PPC_OPCODE_64
 		| PPC_OPCODE_POWER4 | PPC_OPCODE_POWER5 | PPC_OPCODE_POWER6
 		| PPC_OPCODE_POWER7 | PPC_OPCODE_POWER8 | PPC_OPCODE_POWER9
diff --git a/opcodes/ppc-opc.c b/opcodes/ppc-opc.c
index 7637d3e349..51da625e04 100644
--- a/opcodes/ppc-opc.c
+++ b/opcodes/ppc-opc.c
@@ -4832,6 +4832,7 @@ const unsigned int num_powerpc_operands = (sizeof (powerpc_operands)
 #define PPCHTM  PPC_OPCODE_POWER8
 #define E200Z4  PPC_OPCODE_E200Z4
 #define PPCLSP  PPC_OPCODE_LSP
+#define SVP64 PPC_OPCODE_SVP64
 /* Used to mark extended mnemonic in deprecated field so that -Mraw
    won't use this variant in disassembly.  */
 #define EXT	PPC_OPCODE_RAW
-- 
2.37.0