feat: add support for aarch64 timer/interrupts, port MontaukOS userspace

programs/src/spreadsheet/Makefile

@@ -6,9 +6,9 @@ MAKEFLAGS += -rR
 
 # ---- Toolchain ----
 
-TOOLCHAIN_PREFIX := $(shell cd ../../.. && pwd)/toolchain/local/bin/x86_64-montauk-
+include ../../mk/arch.mk
 ifeq ($(wildcard $(TOOLCHAIN_PREFIX)gcc),)
-    CXX = $(error x86_64-montauk toolchain not found. Run ./toolchain/build-montauk-toolchain.sh first)
+    CXX = $(error $(TOOLCHAIN_MISSING))
 else
     CXX := $(TOOLCHAIN_PREFIX)g++
 endif
@@ -17,8 +17,8 @@ endif
 
 PROG_INC := ../../include
 LINK_LD  := ../../link.ld
-BINDIR   := ../../bin
-OBJDIR   := obj
+BINDIR   := ../../bin$(ARCH_SUFFIX)
+OBJDIR   := obj$(ARCH_SUFFIX)
 LIBDIR   := ../../lib
 
 # ---- Compiler flags ----
@@ -37,8 +37,7 @@ CXXFLAGS := \
     -fno-exceptions \
     -ffunction-sections \
     -fdata-sections \
-    -msse \
-    -msse2 \
+    $(ARCH_FP_FLAGS) \
     -I $(PROG_INC) \
     -isystem $(PROG_INC)/libc
 
@@ -57,15 +56,15 @@ OBJS := $(addprefix $(OBJDIR)/,$(SRCS:.cpp=.o))
 # ---- Target ----
 
 TARGET := $(BINDIR)/apps/spreadsheet/spreadsheet.elf
-LOADER_LIB := $(LIBDIR)/libloader/liblibloader.a
+LOADER_LIB := $(LIBDIR)/libloader/$(ARCH_OUT)liblibloader.a
 
 .PHONY: all clean
 
 all: $(TARGET)
 
-$(TARGET): $(OBJS) $(LINK_LD) Makefile $(LOADER_LIB) $(LIBDIR)/libc/liblibc.a
+$(TARGET): $(OBJS) $(LINK_LD) Makefile $(LOADER_LIB) $(LIBDIR)/libc/$(ARCH_OUT)liblibc.a
 	mkdir -p $(BINDIR)/apps/spreadsheet
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(LOADER_LIB) $(LIBDIR)/libc/liblibc.a -o $@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(LOADER_LIB) $(LIBDIR)/libc/$(ARCH_OUT)liblibc.a -o $@
 
 $(OBJDIR)/%.o: %.cpp Makefile
 	mkdir -p $(OBJDIR)