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

programs/src/fontpreview/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 := $(TOOLCHAIN_PREFIX)g++
 endif
@@ -18,9 +18,8 @@ endif
 LIBC_LIB := ../../lib/libc
 PROG_INC := ../../include
 LINK_LD  := ../../link.ld
-BINDIR   := ../../bin
-OBJDIR   := obj
-
+BINDIR   := ../../bin$(ARCH_SUFFIX)
+OBJDIR   := obj$(ARCH_SUFFIX)
 # ---- Compiler flags ----
 
 CXXFLAGS := \
@@ -37,8 +36,7 @@ CXXFLAGS := \
     -fno-exceptions \
     -ffunction-sections \
     -fdata-sections \
-    -msse \
-    -msse2 \
+    $(ARCH_FP_FLAGS) \
     -I $(PROG_INC)
 
 # ---- Linker flags ----
@@ -50,7 +48,7 @@ LDFLAGS := \
 
 # ---- Libraries ----
 
-LIBS := $(LIBC_LIB)/liblibc.a
+LIBS := $(LIBC_LIB)/$(ARCH_OUT)liblibc.a
 
 # ---- Source files ----