7102838b49
This lets some code decide whether or not there's any mmu present to use. Also kernel VM will complain if it isn't set as an extra safety.
138 lines
3.7 KiB
Makefile
138 lines
3.7 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
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MODULE := $(LOCAL_DIR)
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WITH_KERNEL_VM=1
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ifeq ($(SUBARCH),x86-32)
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MEMBASE ?= 0x00000000
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KERNEL_BASE ?= 0x80000000
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KERNEL_LOAD_OFFSET ?= 0x00200000
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KERNEL_ASPACE_BASE ?= 0x80000000
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KERNEL_ASPACE_SIZE ?= 0x7ff00000
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USER_ASPACE_BASE ?= 0
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USER_ASPACE_SIZE ?= 0x80000000
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SUBARCH_DIR := $(LOCAL_DIR)/32
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endif
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ifeq ($(SUBARCH),x86-64)
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GLOBAL_DEFINES += \
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IS_64BIT=1 \
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MEMBASE ?= 0
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KERNEL_BASE ?= 0xffffffff80000000
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KERNEL_LOAD_OFFSET ?= 0x00200000
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KERNEL_ASPACE_BASE ?= 0xffffff8000000000UL # -512GB
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KERNEL_ASPACE_SIZE ?= 0x0000008000000000UL
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USER_ASPACE_BASE ?= 0x0000000000000000UL
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USER_ASPACE_SIZE ?= 0x0000800000000000UL
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SUBARCH_DIR := $(LOCAL_DIR)/64
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endif
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SUBARCH_BUILDDIR := $(call TOBUILDDIR,$(SUBARCH_DIR))
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GLOBAL_DEFINES += \
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ARCH_$(SUBARCH)=1 \
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MEMBASE=$(MEMBASE) \
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KERNEL_BASE=$(KERNEL_BASE) \
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KERNEL_LOAD_OFFSET=$(KERNEL_LOAD_OFFSET) \
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KERNEL_ASPACE_BASE=$(KERNEL_ASPACE_BASE) \
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KERNEL_ASPACE_SIZE=$(KERNEL_ASPACE_SIZE) \
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SMP_MAX_CPUS=1 \
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ARCH_HAS_MMU=1
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MODULE_SRCS += \
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$(SUBARCH_DIR)/start.S \
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$(SUBARCH_DIR)/asm.S \
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$(SUBARCH_DIR)/exceptions.S \
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$(SUBARCH_DIR)/mmu.c \
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$(SUBARCH_DIR)/ops.S \
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\
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$(LOCAL_DIR)/arch.c \
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$(LOCAL_DIR)/cache.c \
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$(LOCAL_DIR)/gdt.S \
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$(LOCAL_DIR)/thread.c \
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$(LOCAL_DIR)/faults.c \
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$(LOCAL_DIR)/descriptor.c \
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# legacy x86's dont have fpu support
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ifneq ($(CPU),legacy)
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GLOBAL_DEFINES += \
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X86_WITH_FPU=1
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MODULE_SRCS += \
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$(LOCAL_DIR)/fpu.c
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else
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GLOBAL_DEFINES += WITH_NO_FP=1
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endif
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include $(LOCAL_DIR)/toolchain.mk
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# set the default toolchain to x86 elf and set a #define
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ifeq ($(SUBARCH),x86-32)
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ifndef TOOLCHAIN_PREFIX
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TOOLCHAIN_PREFIX := $(ARCH_x86_TOOLCHAIN_PREFIX)
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endif
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endif # SUBARCH x86-32
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ifeq ($(SUBARCH),x86-64)
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ifndef TOOLCHAIN_PREFIX
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TOOLCHAIN_PREFIX := $(ARCH_x86_64_TOOLCHAIN_PREFIX)
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endif
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endif # SUBARCH x86-64
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$(warning ARCH_x86_TOOLCHAIN_PREFIX = $(ARCH_x86_TOOLCHAIN_PREFIX))
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$(warning ARCH_x86_64_TOOLCHAIN_PREFIX = $(ARCH_x86_64_TOOLCHAIN_PREFIX))
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$(warning TOOLCHAIN_PREFIX = $(TOOLCHAIN_PREFIX))
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cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`"; \
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then echo "$(2)"; else echo "$(3)"; fi ;)
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# disable SSP if the compiler supports it; it will break stuff
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GLOBAL_CFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
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ARCH_COMPILEFLAGS += -fasynchronous-unwind-tables
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ARCH_COMPILEFLAGS += -gdwarf-2
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ARCH_COMPILEFLAGS += -fno-pic
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ARCH_LDFLAGS += -z max-page-size=4096
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ifeq ($(SUBARCH),x86-64)
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ARCH_COMPILEFLAGS += -fno-stack-protector
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ARCH_COMPILEFLAGS += -mcmodel=kernel
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ARCH_COMPILEFLAGS += -mno-red-zone
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# disable builtins to keep the compiler from generating sse instructions
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# for load/stores
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ARCH_COMPILEFLAGS += -fno-builtin
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endif # SUBARCH x86-64
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# select default optimizations for different target cpu levels
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ifeq ($(CPU),legacy)
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# compile for 386 when selecting 'legacy' cpu support
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ARCH_COMPILEFLAGS += -march=i386
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ARCH_OPTFLAGS := -Os
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GLOBAL_DEFINES += X86_LEGACY=1
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else ifeq ($(SUBARCH),x86-32)
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ARCH_COMPILEFLAGS += -march=i686
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ARCH_OPTFLAGS := -O2
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else ifeq ($(SUBARCH),x86-64)
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ARCH_COMPILEFLAGS += -march=x86-64
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ARCH_OPTFLAGS := -O2
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endif
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LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) -print-libgcc-file-name)
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$(warning LIBGCC = $(LIBGCC))
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LINKER_SCRIPT += $(SUBARCH_BUILDDIR)/kernel.ld
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# potentially generated files that should be cleaned out with clean make rule
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GENERATED += $(SUBARCH_BUILDDIR)/kernel.ld
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# rules for generating the linker scripts
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$(SUBARCH_BUILDDIR)/kernel.ld: $(SUBARCH_DIR)/kernel.ld $(wildcard arch/*.ld)
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@echo generating $@
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@$(MKDIR)
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$(NOECHO)sed "s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/;s/%KERNEL_BASE%/$(KERNEL_BASE)/;s/%KERNEL_LOAD_OFFSET%/$(KERNEL_LOAD_OFFSET)/" < $< > $@.tmp
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@$(call TESTANDREPLACEFILE,$@.tmp,$@)
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include make/module.mk
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