exo2: rename exosphere2 -> exosphere
This commit is contained in:
130
exosphere/loader_stub/Makefile
Normal file
130
exosphere/loader_stub/Makefile
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@@ -0,0 +1,130 @@
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#---------------------------------------------------------------------------------
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# Define the atmosphere board and cpu
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#---------------------------------------------------------------------------------
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export ATMOSPHERE_BOARD := nx-hac-001
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export ATMOSPHERE_CPU := arm-cortex-a57
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#---------------------------------------------------------------------------------
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# pull in common atmosphere configuration
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#---------------------------------------------------------------------------------
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include $(dir $(abspath $(lastword $(MAKEFILE_LIST))))/../../libraries/config/templates/exosphere.mk
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export DEPSDIR := $(CURDIR)/$(BUILD)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir)) \
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$(TOPDIR)/../program
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CFILES := $(foreach dir,$(SOURCES),$(filter-out $(notdir $(wildcard $(dir)/*.arch.*.c)) $(notdir $(wildcard $(dir)/*.board.*.c)) $(notdir $(wildcard $(dir)/*.os.*.c)), \
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$(notdir $(wildcard $(dir)/*.c))))
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CFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.arch.$(ATMOSPHERE_ARCH_NAME).c)))
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CFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.board.$(ATMOSPHERE_BOARD_NAME).c)))
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CFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.os.$(ATMOSPHERE_OS_NAME).c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(filter-out $(notdir $(wildcard $(dir)/*.arch.*.cpp)) $(notdir $(wildcard $(dir)/*.board.*.cpp)) $(notdir $(wildcard $(dir)/*.os.*.cpp)), \
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$(notdir $(wildcard $(dir)/*.cpp))))
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CPPFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.arch.$(ATMOSPHERE_ARCH_NAME).cpp)))
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CPPFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.board.$(ATMOSPHERE_BOARD_NAME).cpp)))
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CPPFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.os.$(ATMOSPHERE_OS_NAME).cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(filter-out $(notdir $(wildcard $(dir)/*.arch.*.s)) $(notdir $(wildcard $(dir)/*.board.*.s)) $(notdir $(wildcard $(dir)/*.os.*.s)), \
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$(notdir $(wildcard $(dir)/*.s))))
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SFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.arch.$(ATMOSPHERE_ARCH_NAME).s)))
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SFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.board.$(ATMOSPHERE_BOARD_NAME).s)))
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SFILES += $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.os.$(ATMOSPHERE_OS_NAME).s)))
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BINFILES := program.lz4 boot_code.lz4
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES_BIN := $(addsuffix .o,$(BINFILES))
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export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export OFILES := $(OFILES_BIN) $(OFILES_SRC)
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export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(subst -,_,$(BINFILES))))
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I.
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib -L$(dir)/$(ATMOSPHERE_LIBRARY_DIR))
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.PHONY: $(BUILD) clean all check_program
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#---------------------------------------------------------------------------------
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all: $(BUILD) check_program
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$(BUILD): check_program
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@[ -d $@ ] || mkdir -p $@
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
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check_program:
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@$(MAKE) -C ../program all
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(OUTPUT).bin $(OUTPUT).elf
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#---------------------------------------------------------------------------------
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else
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.PHONY: all
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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all : $(OUTPUT).bin
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$(OUTPUT).bin : $(OUTPUT).elf
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$(OBJCOPY) -S -O binary --set-section-flags .bss=alloc,load,contents $< $@
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@echo built ... $(notdir $@)
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$(OUTPUT).elf : $(OFILES) ../../../libraries/libexosphere/$(ATMOSPHERE_LIBRARY_DIR)/libexosphere.a
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%.elf:
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@echo linking $(notdir $@)
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$(LD) $(LDFLAGS) $(OFILES) $(LIBPATHS) $(LIBS) -o $@
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@$(NM) -CSn $@ > $(notdir $*.lst)
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$(OFILES_SRC) : $(HFILES_BIN)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o %_bin.h: %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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%.lz4.o %_lz4.h: %.lz4
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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-include $(DEPENDS)
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------
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182
exosphere/loader_stub/loader_stub.ld
Normal file
182
exosphere/loader_stub/loader_stub.ld
Normal file
@@ -0,0 +1,182 @@
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OUTPUT_ARCH(aarch64)
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ENTRY(_start)
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MEMORY
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{
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NULL : ORIGIN = 0, LENGTH = 4K
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ldr_stub : ORIGIN = 0x040030000, LENGTH = 128K
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}
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SECTIONS
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{
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/* =========== CODE section =========== */
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PROVIDE(__start__ = 0x040030000);
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. = __start__;
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__code_start = . ;
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.crt0 :
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{
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KEEP (*(.crt0 .crt0.*))
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. = ALIGN(8);
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} >ldr_stub
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.text :
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{
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*(.text.unlikely .text.*_unlikely .text.unlikely.*)
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*(.text.exit .text.exit.*)
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*(.text.startup .text.startup.*)
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*(.text.hot .text.hot.*)
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*(.text .stub .text.* .gnu.linkonce.t.*)
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. = ALIGN(8);
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} >ldr_stub
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.init :
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{
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KEEP( *(.init) )
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. = ALIGN(8);
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} >ldr_stub
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.plt :
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{
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*(.plt)
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*(.iplt)
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. = ALIGN(8);
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} >ldr_stub
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.fini :
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{
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KEEP( *(.fini) )
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. = ALIGN(8);
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} >ldr_stub
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/* =========== RODATA section =========== */
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. = ALIGN(8);
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__rodata_start = . ;
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.rodata :
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{
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*(.rodata .rodata.* .gnu.linkonce.r.*)
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. = ALIGN(8);
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} >ldr_stub
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.eh_frame_hdr : { __eh_frame_hdr_start = .; *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) __eh_frame_hdr_end = .; } >ldr_stub
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.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) } >ldr_stub
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.gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } >ldr_stub
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.gnu_extab : ONLY_IF_RO { *(.gnu_extab*) } >ldr_stub
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.hash : { *(.hash) } >ldr_stub
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/* =========== DATA section =========== */
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. = ALIGN(8);
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__data_start = . ;
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.eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) *(.eh_frame.*) } >ldr_stub
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.gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) } >ldr_stub
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.gnu_extab : ONLY_IF_RW { *(.gnu_extab*) } >ldr_stub
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.exception_ranges : ONLY_IF_RW { *(.exception_ranges .exception_ranges*) } >ldr_stub
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.preinit_array ALIGN(8) :
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{
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PROVIDE (__preinit_array_start = .);
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KEEP (*(.preinit_array))
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PROVIDE (__preinit_array_end = .);
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} >ldr_stub
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.init_array ALIGN(8) :
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{
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PROVIDE (__init_array_start = .);
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KEEP (*(SORT(.init_array.*)))
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KEEP (*(.init_array))
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PROVIDE (__init_array_end = .);
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} >ldr_stub
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.fini_array ALIGN(8) :
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{
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PROVIDE (__fini_array_start = .);
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KEEP (*(.fini_array))
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KEEP (*(SORT(.fini_array.*)))
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PROVIDE (__fini_array_end = .);
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} >ldr_stub
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.ctors ALIGN(8) :
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{
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KEEP (*crtbegin.o(.ctors)) /* MUST be first -- GCC requires it */
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KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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} >ldr_stub
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.dtors ALIGN(8) :
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{
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KEEP (*crtbegin.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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} >ldr_stub
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__got_start__ = .;
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.got : { *(.got) *(.igot) } >ldr_stub
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.got.plt : { *(.got.plt) *(.igot.plt) } >ldr_stub
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__got_end__ = .;
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.data ALIGN(8) :
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{
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*(.data .data.* .gnu.linkonce.d.*)
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SORT(CONSTRUCTORS)
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} >ldr_stub
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__bss_start__ = .;
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.bss ALIGN(8) :
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{
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*(.dynbss)
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*(.bss .bss.* .gnu.linkonce.b.*)
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*(COMMON)
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. = ALIGN(16);
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} >ldr_stub
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__bss_end__ = .;
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__end__ = ABSOLUTE(.) ;
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/* ==================
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==== Metadata ====
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================== */
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/* Discard sections that difficult post-processing */
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/DISCARD/ : { *(.group .comment .note .interp) }
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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|
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/* DWARF debug sections.
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Symbols in the DWARF debugging sections are relative to the beginning
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of the section so we begin them at 0. */
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/* DWARF 1 */
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.debug 0 : { *(.debug) }
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.line 0 : { *(.line) }
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|
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/* GNU DWARF 1 extensions */
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
|
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|
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
|
||||
.debug_pubnames 0 : { *(.debug_pubnames) }
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||||
|
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/* DWARF 2 */
|
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.debug_info 0 : { *(.debug_info) }
|
||||
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||
.debug_line 0 : { *(.debug_line) }
|
||||
.debug_frame 0 : { *(.debug_frame) }
|
||||
.debug_str 0 : { *(.debug_str) }
|
||||
.debug_loc 0 : { *(.debug_loc) }
|
||||
.debug_macinfo 0 : { *(.debug_macinfo) }
|
||||
}
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7
exosphere/loader_stub/loader_stub.specs
Normal file
7
exosphere/loader_stub/loader_stub.specs
Normal file
@@ -0,0 +1,7 @@
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%rename link old_link
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*link:
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%(old_link) -T %:getenv(TOPDIR /loader_stub.ld) --gc-sections --nmagic -nostdlib -nostartfiles
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*startfile:
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crti%O%s crtbegin%O%s
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||||
47
exosphere/loader_stub/source/secmon_loader_error.cpp
Normal file
47
exosphere/loader_stub/source/secmon_loader_error.cpp
Normal file
@@ -0,0 +1,47 @@
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/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
|
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* version 2, as published by the Free Software Foundation.
|
||||
*
|
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* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
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*/
|
||||
#include <exosphere.hpp>
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#include "secmon_loader_error.hpp"
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namespace ams::diag {
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|
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NORETURN void AbortImpl(const char *file, int line, const char *func, const char *expr, u64 value, const char *format, ...) {
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ams::secmon::loader::ErrorReboot();
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}
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NORETURN void AbortImpl(const char *file, int line, const char *func, const char *expr, u64 value) {
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ams::secmon::loader::ErrorReboot();
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}
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NORETURN void AbortImpl() {
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ams::secmon::loader::ErrorReboot();
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||||
}
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|
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}
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||||
|
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namespace ams::secmon::loader {
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||||
|
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NORETURN void ErrorReboot() {
|
||||
/* Invalidate the security engine. */
|
||||
/* TODO */
|
||||
|
||||
/* Reboot. */
|
||||
while (true) {
|
||||
wdt::Reboot();
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
23
exosphere/loader_stub/source/secmon_loader_error.hpp
Normal file
23
exosphere/loader_stub/source/secmon_loader_error.hpp
Normal file
@@ -0,0 +1,23 @@
|
||||
/*
|
||||
* Copyright (c) 2018-2020 Atmosphère-NX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <exosphere.hpp>
|
||||
#pragma once
|
||||
|
||||
namespace ams::secmon::loader {
|
||||
|
||||
NORETURN void ErrorReboot();
|
||||
|
||||
}
|
||||
43
exosphere/loader_stub/source/secmon_loader_main.cpp
Normal file
43
exosphere/loader_stub/source/secmon_loader_main.cpp
Normal file
@@ -0,0 +1,43 @@
|
||||
/*
|
||||
* Copyright (c) 2018-2020 Atmosphère-NX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <exosphere.hpp>
|
||||
#include "secmon_loader_uncompress.hpp"
|
||||
#include "program_lz4.h"
|
||||
#include "boot_code_lz4.h"
|
||||
|
||||
namespace ams::secmon::loader {
|
||||
|
||||
NORETURN void UncompressAndExecute() {
|
||||
/* Uncompress the program image. */
|
||||
Uncompress(secmon::MemoryRegionPhysicalTzramFullProgramImage.GetPointer(), secmon::MemoryRegionPhysicalTzramFullProgramImage.GetSize(), program_lz4, program_lz4_size);
|
||||
|
||||
|
||||
/* Copy the boot image to the end of IRAM */
|
||||
u8 *relocated_boot_code = secmon::MemoryRegionPhysicalIramBootCodeImage.GetEndPointer<u8>() - boot_code_lz4_size;
|
||||
std::memcpy(relocated_boot_code, boot_code_lz4, boot_code_lz4_size);
|
||||
|
||||
/* Uncompress the boot image. */
|
||||
Uncompress(secmon::MemoryRegionPhysicalIramBootCodeImage.GetPointer(), secmon::MemoryRegionPhysicalIramBootCodeImage.GetSize(), relocated_boot_code, boot_code_lz4_size);
|
||||
|
||||
|
||||
/* Jump to the boot image. */
|
||||
reinterpret_cast<void (*)()>(secmon::MemoryRegionPhysicalIramBootCodeImage.GetAddress())();
|
||||
|
||||
/* We will never reach this point. */
|
||||
__builtin_unreachable();
|
||||
}
|
||||
|
||||
}
|
||||
103
exosphere/loader_stub/source/secmon_loader_uncompress.cpp
Normal file
103
exosphere/loader_stub/source/secmon_loader_uncompress.cpp
Normal file
@@ -0,0 +1,103 @@
|
||||
/*
|
||||
* Copyright (c) 2018-2020 Atmosphère-NX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <exosphere.hpp>
|
||||
#include "secmon_loader_uncompress.hpp"
|
||||
|
||||
namespace ams::secmon::loader {
|
||||
|
||||
namespace {
|
||||
|
||||
class Lz4Uncompressor {
|
||||
private:
|
||||
const u8 *src;
|
||||
size_t src_size;
|
||||
size_t src_offset;
|
||||
u8 *dst;
|
||||
size_t dst_size;
|
||||
size_t dst_offset;
|
||||
public:
|
||||
Lz4Uncompressor(void *dst, size_t dst_size, const void *src, size_t src_size) : src(static_cast<const u8 *>(src)), src_size(src_size), src_offset(0), dst(static_cast<u8 *>(dst)), dst_size(dst_size), dst_offset(0) {
|
||||
/* ... */
|
||||
}
|
||||
|
||||
void Uncompress() {
|
||||
while (true) {
|
||||
/* Read a control byte. */
|
||||
u8 control = this->ReadByte();
|
||||
|
||||
/* Copy what it specifies we should copy. */
|
||||
this->Copy(this->GetCopySize(control >> 4));
|
||||
|
||||
/* If we've exceeded size, we're done. */
|
||||
if (this->src_offset >= this->src_size) {
|
||||
break;
|
||||
}
|
||||
|
||||
/* Read the wide copy offset. */
|
||||
u16 wide_offset = this->ReadByte();
|
||||
AMS_ABORT_UNLESS(this->CanRead());
|
||||
wide_offset |= (this->ReadByte() << 8);
|
||||
|
||||
/* Determine the copy size. */
|
||||
const size_t wide_copy_size = this->GetCopySize(control & 0xF);
|
||||
|
||||
/* Copy bytes. */
|
||||
const size_t end_offset = this->dst_offset + wide_copy_size + 4;
|
||||
for (size_t cur_offset = this->dst_offset; cur_offset < end_offset; this->dst_offset = (++cur_offset)) {
|
||||
AMS_ABORT_UNLESS(wide_offset <= cur_offset);
|
||||
|
||||
this->dst[cur_offset] = this->dst[cur_offset - wide_offset];
|
||||
}
|
||||
}
|
||||
}
|
||||
private:
|
||||
u8 ReadByte() {
|
||||
return this->src[this->src_offset++];
|
||||
}
|
||||
|
||||
bool CanRead() const {
|
||||
return this->src_offset < this->src_size;
|
||||
}
|
||||
|
||||
size_t GetCopySize(u8 control) {
|
||||
size_t size = control;
|
||||
|
||||
if (control >= 0xF) {
|
||||
do {
|
||||
AMS_ABORT_UNLESS(this->CanRead());
|
||||
control = this->ReadByte();
|
||||
size += control;
|
||||
} while (control == 0xFF);
|
||||
}
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
void Copy(size_t size) {
|
||||
__builtin_memcpy(this->dst + this->dst_offset, this->src + this->src_offset, size);
|
||||
this->dst_offset += size;
|
||||
this->src_offset += size;
|
||||
}
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
void Uncompress(void *dst, size_t dst_size, const void *src, size_t src_size) {
|
||||
/* Create an execute a decompressor. */
|
||||
Lz4Uncompressor(dst, dst_size, src, src_size).Uncompress();
|
||||
}
|
||||
|
||||
}
|
||||
23
exosphere/loader_stub/source/secmon_loader_uncompress.hpp
Normal file
23
exosphere/loader_stub/source/secmon_loader_uncompress.hpp
Normal file
@@ -0,0 +1,23 @@
|
||||
/*
|
||||
* Copyright (c) 2018-2020 Atmosphère-NX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include <vapours.hpp>
|
||||
#pragma once
|
||||
|
||||
namespace ams::secmon::loader {
|
||||
|
||||
void Uncompress(void *dst, size_t dst_size, const void *src, size_t src_size);
|
||||
|
||||
}
|
||||
105
exosphere/loader_stub/source/start.s
Normal file
105
exosphere/loader_stub/source/start.s
Normal file
@@ -0,0 +1,105 @@
|
||||
/*
|
||||
* Copyright (c) 2018-2020 Atmosphère-NX
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
* version 2, as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/* For some reason GAS doesn't know about it, even with .cpu cortex-a57 */
|
||||
#define cpuactlr_el1 s3_1_c15_c2_0
|
||||
#define cpuectlr_el1 s3_1_c15_c2_1
|
||||
|
||||
.macro RESET_CORE
|
||||
mov x0, #(1 << 63)
|
||||
msr cpuactlr_el1, x0 /* disable regional clock gating */
|
||||
isb
|
||||
mov x0, #3
|
||||
msr rmr_el3, x0
|
||||
isb
|
||||
dsb sy
|
||||
/* Nintendo forgot to copy-paste the branch instruction below. */
|
||||
1:
|
||||
wfi
|
||||
b 1b
|
||||
.endm
|
||||
|
||||
.macro ERRATUM_INVALIDATE_BTB_AT_BOOT
|
||||
/* Nintendo copy-pasted https://github.com/ARM-software/arm-trusted-firmware/blob/master/plat/nvidia/tegra/common/aarch64/tegra_helpers.S#L312 */
|
||||
/*
|
||||
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: BSD-3-Clause
|
||||
*/
|
||||
/* The following comments are mine. */
|
||||
|
||||
/*
|
||||
Enable invalidates of branch target buffer, then flush
|
||||
the entire instruction cache at the local level, and
|
||||
with the reg change, the branch target buffer, then disable
|
||||
invalidates of the branch target buffer again.
|
||||
*/
|
||||
mrs x0, cpuactlr_el1
|
||||
orr x0, x0, #1
|
||||
msr cpuactlr_el1, x0
|
||||
|
||||
dsb sy
|
||||
isb
|
||||
ic iallu
|
||||
dsb sy
|
||||
isb
|
||||
|
||||
mrs x0, cpuactlr_el1
|
||||
bic x0, x0, #1
|
||||
msr cpuactlr_el1, x0
|
||||
|
||||
.rept 7
|
||||
nop /* wait long enough for the write to cpuactlr_el1 to have completed */
|
||||
.endr
|
||||
|
||||
/* if the OS lock is set, disable it and request a warm reset */
|
||||
mrs x0, oslsr_el1
|
||||
ands x0, x0, #2
|
||||
b.eq 2f
|
||||
mov x0, xzr
|
||||
msr oslar_el1, x0
|
||||
|
||||
RESET_CORE
|
||||
|
||||
.rept 65
|
||||
nop /* guard against speculative excecution */
|
||||
.endr
|
||||
|
||||
2:
|
||||
/* set the OS lock */
|
||||
mov x0, #1
|
||||
msr oslar_el1, x0
|
||||
.endm
|
||||
|
||||
.section .crt0.text.start, "ax", %progbits
|
||||
.align 6
|
||||
.global _start
|
||||
_start:
|
||||
/* mask all interrupts */
|
||||
msr daifset, #0xF
|
||||
|
||||
/* Fixup hardware erratum */
|
||||
ERRATUM_INVALIDATE_BTB_AT_BOOT
|
||||
|
||||
/* Set the stack pointer to a temporary location. */
|
||||
ldr x20, =0x7C020000
|
||||
mov sp, x20
|
||||
|
||||
/* Call our init array functions. */
|
||||
bl __libc_init_array
|
||||
|
||||
/* Uncompress the program and iram boot code images. */
|
||||
b _ZN3ams6secmon6loader20UncompressAndExecuteEv
|
||||
Reference in New Issue
Block a user