BaseTools: Add RISCV64 binding

- Add RISCV64 ProcessorBind.h

- Add RISCV64 to Makefiles

Signed-off-by: Nikita Ermakov <sh1r4s3@mail.si-head.nl>
Ack-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Abner Chang <abner.chang@hpe.com>

BaseTools/Source/C/GNUmakefile

@@ -26,6 +26,9 @@ ifndef HOST_ARCH
   else ifneq (,$(findstring arm,$(uname_m)))
     HOST_ARCH=ARM
   endif
+  ifneq (,$(findstring riscv64,$(uname_m)))
+    HOST_ARCH=RISCV64
+  endif
   ifndef HOST_ARCH
     $(info Could not detected HOST_ARCH from uname results)
     $(error HOST_ARCH is not defined!)

BaseTools/Source/C/Include/RiscV64/ProcessorBind.h

@@ -0,0 +1,85 @@
+/** @file
+  Processor or Compiler specific defines and types for RISC-V.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef __PROCESSOR_BIND_H__
+#define __PROCESSOR_BIND_H__
+
+//
+// Define the processor type so other code can make processor based choices
+//
+#define MDE_CPU_RISCV64
+
+//
+// Make sure we are using the correct packing rules per EFI specification
+//
+#ifndef __GNUC__
+#pragma pack()
+#endif
+
+//
+// Use ANSI C 2000 stdint.h integer width declarations
+//
+#include <stdint.h>
+typedef uint8_t   BOOLEAN;
+typedef int8_t    INT8;
+typedef uint8_t   UINT8;
+typedef int16_t   INT16;
+typedef uint16_t  UINT16;
+typedef int32_t   INT32;
+typedef uint32_t  UINT32;
+typedef int64_t   INT64;
+typedef uint64_t  UINT64;
+typedef char      CHAR8;
+typedef uint16_t  CHAR16;
+
+//
+// Unsigned value of native width.  (4 bytes on supported 32-bit processor instructions,
+// 8 bytes on supported 64-bit processor instructions)
+//
+typedef UINT64  UINTN;
+
+//
+// Signed value of native width.  (4 bytes on supported 32-bit processor instructions,
+// 8 bytes on supported 64-bit processor instructions)
+//
+typedef INT64   INTN;
+
+//
+// Processor specific defines
+//
+
+//
+// A value of native width with the highest bit set.
+//
+#define MAX_BIT      0x8000000000000000
+
+//
+// A value of native width with the two highest bits set.
+//
+#define MAX_2_BITS   0xC000000000000000
+
+//
+// The stack alignment required for RISC-V
+//
+#define CPU_STACK_ALIGNMENT  16
+
+//
+// Modifier to ensure that all protocol member functions and EFI intrinsics
+// use the correct C calling convention. All protocol member functions and
+// EFI intrinsics are required to modify their member functions with EFIAPI.
+//
+#define EFIAPI
+
+#if defined(__GNUC__)
+  //
+  // For GNU assembly code, .global or .globl can declare global symbols.
+  // Define this macro to unify the usage.
+  //
+  #define ASM_GLOBAL .globl
+#endif
+
+#endif

BaseTools/Source/C/Makefiles/header.makefile

@@ -28,6 +28,9 @@ ifndef HOST_ARCH
   else ifneq (,$(findstring arm,$(uname_m)))
     HOST_ARCH=ARM
   endif
+  ifneq (,$(findstring riscv64,$(uname_m)))
+    HOST_ARCH=RISCV64
+  endif
   ifndef HOST_ARCH
     $(info Could not detected HOST_ARCH from uname results)
     $(error HOST_ARCH is not defined!)
@@ -64,6 +67,9 @@ ARCH_INCLUDE = -I $(MAKEROOT)/Include/Arm/
 else ifeq ($(HOST_ARCH), AARCH64)
 ARCH_INCLUDE = -I $(MAKEROOT)/Include/AArch64/
 
+else ifeq ($(HOST_ARCH), RISCV64)
+ARCH_INCLUDE = -I $(MAKEROOT)/Include/RiscV64/
+
 else
 $(error Bad HOST_ARCH)
 endif