arch: microblaze: Toolchain: introduce MicroBlaze to build system

Internal references: FWRIVERHD-4980,FWRIVERHD-4991

Signed-off-by: Alp Sayin <alpsayin@gmail.com>

Author: alpsayin

cmake/compiler/gcc/target.cmake

@@ -78,6 +78,8 @@ elseif("${ARCH}" STREQUAL "mips")
   include(${CMAKE_CURRENT_LIST_DIR}/target_mips.cmake)
 elseif("${ARCH}" STREQUAL "xtensa")
   include(${CMAKE_CURRENT_LIST_DIR}/target_xtensa.cmake)
+elseif("${ARCH}" STREQUAL "microblaze")
+  include(${CMAKE_CURRENT_LIST_DIR}/target_microblaze.cmake)
 endif()
 
 if(SYSROOT_DIR)

cmake/compiler/gcc/target_microblaze.cmake

@@ -0,0 +1,51 @@
+# Copyright (c) 2023 Advanced Micro Devices, Inc. (AMD)
+# Copyright (c) 2023 Alp Sayin <alpsayin@gmail.com>
+# SPDX-License-Identifier: Apache-2.0
+
+
+
+list(APPEND TOOLCHAIN_C_FLAGS -mcpu=${CONFIG_CPU_VERSION})
+
+if(DEFINED CONFIG_MICROBLAZE_DATA_IS_TEXT_RELATIVE)
+	list(APPEND TOOLCHAIN_C_FLAGS -mpic-data-is-text-relative)
+endif()
+
+if(DEFINED CONFIG_MICROBLAZE_USE_BARREL_SHIFT_INSTR)
+	list(APPEND TOOLCHAIN_C_FLAGS -mxl-barrel-shift)
+endif()
+
+if(DEFINED CONFIG_MICROBLAZE_USE_MUL_INSTR)
+	list(APPEND TOOLCHAIN_C_FLAGS -mno-xl-soft-mul)
+else()
+	list(APPEND TOOLCHAIN_C_FLAGS -mxl-soft-mul)
+endif()
+
+if(NOT DEFINED CONFIG_MICROBLAZE_USE_PATTERN_COMPARE_INSTR)
+	list(APPEND TOOLCHAIN_C_FLAGS -mxl-pattern-compare)
+endif()
+
+if(DEFINED CONFIG_MICROBLAZE_USE_MULHI_INSTR)
+	list(APPEND TOOLCHAIN_C_FLAGS -mxl-multiply-high)
+endif()
+
+if(DEFINED CONFIG_MICROBLAZE_USE_DIV_INSTR)
+	list(APPEND TOOLCHAIN_C_FLAGS -mno-xl-soft-div)
+else()
+	list(APPEND TOOLCHAIN_C_FLAGS -mxl-soft-div)
+endif()
+
+if(DEFINED CONFIG_MICROBLAZE_USE_HARDWARE_FLOAT_INSTR)
+	list(APPEND TOOLCHAIN_C_FLAGS -mhard-float)
+else()
+	list(APPEND TOOLCHAIN_C_FLAGS -msoft-float)
+endif()
+
+
+# Common options
+list(APPEND TOOLCHAIN_C_FLAGS -fdollars-in-identifiers)
+# TODO: Remove this when gcc microblaze variant oddity is fixed
+list(APPEND TOOLCHAIN_C_FLAGS -mlittle-endian)
+list(APPEND TOOLCHAIN_LD_FLAGS -mlittle-endian)
+
+# string(REPLACE ";"  "\n " str "${TOOLCHAIN_C_FLAGS}")
+# message(STATUS "Final set of C Flags: ${str}")

include/zephyr/linker/utils.h

@@ -36,7 +36,8 @@ static inline bool linker_is_in_rodata(const void *addr)
 #if defined(CONFIG_ARM) || defined(CONFIG_ARC) || defined(CONFIG_X86) || \
 	defined(CONFIG_ARM64) || defined(CONFIG_NIOS2) || \
 	defined(CONFIG_RISCV) || defined(CONFIG_SPARC) || \
-	defined(CONFIG_MIPS) || defined(CONFIG_XTENSA)
+	defined(CONFIG_MIPS) || defined(CONFIG_XTENSA) || \
+	defined(CONFIG_MICROBLAZE)
 	extern char __rodata_region_start[];
 	extern char __rodata_region_end[];
 	#define RO_START __rodata_region_start

include/zephyr/toolchain/common.h

@@ -87,7 +87,8 @@
     #define PERFOPT_ALIGN .align  4
 
   #elif defined(CONFIG_NIOS2) || defined(CONFIG_RISCV) || \
-	  defined(CONFIG_XTENSA) || defined(CONFIG_MIPS)
+	  defined(CONFIG_XTENSA) || defined(CONFIG_MIPS) || \
+	  defined(CONFIG_MICROBLAZE)
     #define PERFOPT_ALIGN .balign 4
 
   #elif defined(CONFIG_ARCH_POSIX)

include/zephyr/toolchain/gcc.h

@@ -352,7 +352,7 @@ do {                                                                    \
 
 #if defined(CONFIG_ARM) || defined(CONFIG_NIOS2) || defined(CONFIG_RISCV) \
 	|| defined(CONFIG_XTENSA) || defined(CONFIG_ARM64) \
-	|| defined(CONFIG_MIPS)
+	|| defined(CONFIG_MIPS) || defined(CONFIG_MICROBLAZE)
 #define GTEXT(sym) .global sym; .type sym, %function
 #define GDATA(sym) .global sym; .type sym, %object
 #define WTEXT(sym) .weak sym; .type sym, %function
@@ -534,7 +534,8 @@ do {                                                                    \
 		"\n\t.type\t" #name ",@object")
 
 #elif defined(CONFIG_NIOS2) || defined(CONFIG_RISCV) || \
-	defined(CONFIG_XTENSA) || defined(CONFIG_MIPS)
+	defined(CONFIG_XTENSA) || defined(CONFIG_MIPS) || \
+	defined(CONFIG_MICROBLAZE)
 
 /* No special prefixes necessary for constants in this arch AFAICT */
 #define GEN_ABSOLUTE_SYM(name, value)		\