[RISCV] Add generated RV64GC register description

Add an RCC-owned build-time target description generator and the initial RV64GC register model. Keep ABI aliases separate from canonical MIR register spelling.

1 files changed, 39 insertions, 0 deletions

diff --git a/backend/tools/DescriptionGenerator/CMakeLists.txt b/backend/tools/DescriptionGenerator/CMakeLists.txt
new file mode 100644
index 0000000..9bc3f26
--- /dev/null
+++ b/backend/tools/DescriptionGenerator/CMakeLists.txt
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+set(
+  RCCBackendDescriptionGeneratorCoreSources
+  "${RCC_BACKEND_SOURCE_DIR}/lib/Target/Description/TargetDescriptionGenerator.cpp"
+)
+set(
+  RCCBackendDescriptionGeneratorCoreHeaders
+  "${RCC_BACKEND_SOURCE_DIR}/lib/Target/Description/TargetDescriptionGenerator.h"
+)
+
+add_library(
+  RCCBackendDescriptionGeneratorCore
+  STATIC
+  ${RCCBackendDescriptionGeneratorCoreSources}
+)
+
+rcc_backend_configure_target(RCCBackendDescriptionGeneratorCore)
+
+target_include_directories(
+  RCCBackendDescriptionGeneratorCore
+  PUBLIC "$<BUILD_INTERFACE:${RCC_BACKEND_SOURCE_DIR}/lib/Target/Description>"
+)
+target_link_libraries(RCCBackendDescriptionGeneratorCore PUBLIC RCCBackend::Support)
+
+add_executable(RCCBackendDescriptionGenerator DescriptionGeneratorMain.cpp)
+rcc_backend_configure_target(RCCBackendDescriptionGenerator)
+target_link_libraries(RCCBackendDescriptionGenerator PRIVATE RCCBackendDescriptionGeneratorCore)
+set_target_properties(RCCBackendDescriptionGenerator PROPERTIES OUTPUT_NAME rcc-backend-descgen)
+
+rcc_backend_register_format_files(
+  "${CMAKE_CURRENT_SOURCE_DIR}/DescriptionGeneratorMain.cpp"
+  ${RCCBackendDescriptionGeneratorCoreSources}
+  ${RCCBackendDescriptionGeneratorCoreHeaders}
+)
+rcc_backend_register_tidy_files(
+  "${CMAKE_CURRENT_SOURCE_DIR}/DescriptionGeneratorMain.cpp"
+  ${RCCBackendDescriptionGeneratorCoreSources}
+)