From 888f86ab36a1f0f4dead0549037598f0befdbf39 Mon Sep 17 00:00:00 2001 From: yellows8 Date: Wed, 14 Nov 2018 22:01:30 -0500 Subject: [PATCH] Added exception-handler example. --- exception-handler/Makefile | 193 ++++++++++++++++++++++++++++++++ exception-handler/source/main.c | 78 +++++++++++++ 2 files changed, 271 insertions(+) create mode 100644 exception-handler/Makefile create mode 100644 exception-handler/source/main.c diff --git a/exception-handler/Makefile b/exception-handler/Makefile new file mode 100644 index 0000000..47ac198 --- /dev/null +++ b/exception-handler/Makefile @@ -0,0 +1,193 @@ +#--------------------------------------------------------------------------------- +.SUFFIXES: +#--------------------------------------------------------------------------------- + +ifeq ($(strip $(DEVKITPRO)),) +$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=/devkitpro") +endif + +TOPDIR ?= $(CURDIR) +include $(DEVKITPRO)/libnx/switch_rules + +#--------------------------------------------------------------------------------- +# TARGET is the name of the output +# BUILD is the directory where object files & intermediate files will be placed +# SOURCES is a list of directories containing source code +# DATA is a list of directories containing data files +# INCLUDES is a list of directories containing header files +# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm". +# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional) +# +# NO_ICON: if set to anything, do not use icon. +# NO_NACP: if set to anything, no .nacp file is generated. +# APP_TITLE is the name of the app stored in the .nacp file (Optional) +# APP_AUTHOR is the author of the app stored in the .nacp file (Optional) +# APP_VERSION is the version of the app stored in the .nacp file (Optional) +# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional) +# ICON is the filename of the icon (.jpg), relative to the project folder. +# If not set, it attempts to use one of the following (in this order): +# - .jpg +# - icon.jpg +# - /default_icon.jpg +#--------------------------------------------------------------------------------- +TARGET := $(notdir $(CURDIR)) +BUILD := build +SOURCES := source +DATA := data +INCLUDES := include +EXEFS_SRC := exefs_src +#ROMFS := romfs + +#--------------------------------------------------------------------------------- +# options for code generation +#--------------------------------------------------------------------------------- +ARCH := -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE + +CFLAGS := -g -Wall -O2 -ffunction-sections \ + $(ARCH) $(DEFINES) + +CFLAGS += $(INCLUDE) -D__SWITCH__ + +CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions + +ASFLAGS := -g $(ARCH) +LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map) + +LIBS := -lnx + +#--------------------------------------------------------------------------------- +# list of directories containing libraries, this must be the top level containing +# include and lib +#--------------------------------------------------------------------------------- +LIBDIRS := $(PORTLIBS) $(LIBNX) + + +#--------------------------------------------------------------------------------- +# no real need to edit anything past this point unless you need to add additional +# rules for different file extensions +#--------------------------------------------------------------------------------- +ifneq ($(BUILD),$(notdir $(CURDIR))) +#--------------------------------------------------------------------------------- + +export OUTPUT := $(CURDIR)/$(TARGET) +export TOPDIR := $(CURDIR) + +export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \ + $(foreach dir,$(DATA),$(CURDIR)/$(dir)) + +export DEPSDIR := $(CURDIR)/$(BUILD) + +CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c))) +CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp))) +SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s))) +BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*))) + +#--------------------------------------------------------------------------------- +# use CXX for linking C++ projects, CC for standard C +#--------------------------------------------------------------------------------- +ifeq ($(strip $(CPPFILES)),) +#--------------------------------------------------------------------------------- + export LD := $(CC) +#--------------------------------------------------------------------------------- +else +#--------------------------------------------------------------------------------- + export LD := $(CXX) +#--------------------------------------------------------------------------------- +endif +#--------------------------------------------------------------------------------- + +export OFILES_BIN := $(addsuffix .o,$(BINFILES)) +export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o) +export OFILES := $(OFILES_BIN) $(OFILES_SRC) +export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES))) + +export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \ + $(foreach dir,$(LIBDIRS),-I$(dir)/include) \ + -I$(CURDIR)/$(BUILD) + +export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib) + +export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC) + +ifeq ($(strip $(ICON)),) + icons := $(wildcard *.jpg) + ifneq (,$(findstring $(TARGET).jpg,$(icons))) + export APP_ICON := $(TOPDIR)/$(TARGET).jpg + else + ifneq (,$(findstring icon.jpg,$(icons))) + export APP_ICON := $(TOPDIR)/icon.jpg + endif + endif +else + export APP_ICON := $(TOPDIR)/$(ICON) +endif + +ifeq ($(strip $(NO_ICON)),) + export NROFLAGS += --icon=$(APP_ICON) +endif + +ifeq ($(strip $(NO_NACP)),) + export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp +endif + +ifneq ($(APP_TITLEID),) + export NACPFLAGS += --titleid=$(APP_TITLEID) +endif + +ifneq ($(ROMFS),) + export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS) +endif + +.PHONY: $(BUILD) clean all + +#--------------------------------------------------------------------------------- +all: $(BUILD) + +$(BUILD): + @[ -d $@ ] || mkdir -p $@ + @$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile + +#--------------------------------------------------------------------------------- +clean: + @echo clean ... + @rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf + + +#--------------------------------------------------------------------------------- +else +.PHONY: all + +DEPENDS := $(OFILES:.o=.d) + +#--------------------------------------------------------------------------------- +# main targets +#--------------------------------------------------------------------------------- +all : $(OUTPUT).pfs0 $(OUTPUT).nro + +$(OUTPUT).pfs0 : $(OUTPUT).nso + +$(OUTPUT).nso : $(OUTPUT).elf + +ifeq ($(strip $(NO_NACP)),) +$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp +else +$(OUTPUT).nro : $(OUTPUT).elf +endif + +$(OUTPUT).elf : $(OFILES) + +$(OFILES_SRC) : $(HFILES_BIN) + +#--------------------------------------------------------------------------------- +# you need a rule like this for each extension you use as binary data +#--------------------------------------------------------------------------------- +%.bin.o %_bin.h : %.bin +#--------------------------------------------------------------------------------- + @echo $(notdir $<) + @$(bin2o) + +-include $(DEPENDS) + +#--------------------------------------------------------------------------------------- +endif +#--------------------------------------------------------------------------------------- diff --git a/exception-handler/source/main.c b/exception-handler/source/main.c new file mode 100644 index 0000000..c778f9f --- /dev/null +++ b/exception-handler/source/main.c @@ -0,0 +1,78 @@ +// Include the most common headers from the C standard library +#include +#include +#include + +// Include the main libnx system header, for Switch development +#include + +//This example shows how to use userland exception handling. See also libnx init.c and thread_context.h. + +alignas(16) u8 __nx_exception_stack[0x1000]; +u64 __nx_exception_stack_size = sizeof(__nx_exception_stack); + +void __libnx_exception_handler(ThreadExceptionDump *ctx) +{ + int i; + FILE *f = fopen("exception_dump", "w"); + if(f==NULL)return; + + fprintf(f, "error_desc: 0x%x\n", ctx->error_desc);//You can also parse this with ThreadExceptionDesc. + //This assumes AArch64, however you can also use threadExceptionIsAArch64(). + for(i=0; i<29; i++)fprintf(f, "[X%d]: 0x%lx\n", i, ctx->cpu_gprs[i].x); + fprintf(f, "fp: 0x%lx\n", ctx->fp.x); + fprintf(f, "lr: 0x%lx\n", ctx->lr.x); + fprintf(f, "sp: 0x%lx\n", ctx->sp.x); + fprintf(f, "pc: 0x%lx\n", ctx->pc.x); + + //You could print fpu_gprs if you want. + + fprintf(f, "pstate: 0x%x\n", ctx->pstate); + fprintf(f, "afsr0: 0x%x\n", ctx->afsr0); + fprintf(f, "afsr1: 0x%x\n", ctx->afsr1); + fprintf(f, "esr: 0x%x\n", ctx->esr); + + fprintf(f, "far: 0x%lx\n", ctx->far.x); + + fclose(f); +} + +// Main program entrypoint +int main(int argc, char* argv[]) +{ + // This example uses a text console, as a simple way to output text to the screen. + // If you want to write a software-rendered graphics application, + // take a look at the graphics/simplegfx example, which uses the libnx gfx API instead. + // If on the other hand you want to write an OpenGL based application, + // take a look at the graphics/opengl set of examples, which uses EGL instead. + consoleInit(NULL); + + printf("Triggering crash...\n"); + consoleUpdate(NULL); + + //Trigger a crash. + *((u64*)8) = 16; + + // Main loop + while (appletMainLoop()) + { + // Scan all the inputs. This should be done once for each frame + hidScanInput(); + + // hidKeysDown returns information about which buttons have been + // just pressed in this frame compared to the previous one + u64 kDown = hidKeysDown(CONTROLLER_P1_AUTO); + + if (kDown & KEY_PLUS) + break; // break in order to return to hbmenu + + // Your code goes here + + // Update the console, sending a new frame to the display + consoleUpdate(NULL); + } + + // Deinitialize and clean up resources used by the console (important!) + consoleExit(NULL); + return 0; +}