From e9808d726a19aed62c6863bd2c2b6968868d5cc9 Mon Sep 17 00:00:00 2001
From: Alex <enderice2@users.noreply.github.com>
Date: Sat, 8 Oct 2022 04:34:05 +0300
Subject: [PATCH] Update files

---
 apps/system/init/Makefile             | 100 ++++++++++++++++++++++++++
 apps/system/init/arch/amd64/linker.ld |  41 +++++++++++
 apps/system/init/init.cpp             |  39 ++++++++++
 3 files changed, 180 insertions(+)
 create mode 100644 apps/system/init/Makefile
 create mode 100644 apps/system/init/arch/amd64/linker.ld
 create mode 100644 apps/system/init/init.cpp

diff --git a/apps/system/init/Makefile b/apps/system/init/Makefile
new file mode 100644
index 0000000..f9bf4f2
--- /dev/null
+++ b/apps/system/init/Makefile
@@ -0,0 +1,100 @@
+# Config file
+include ../../../Makefile.conf
+
+FILENAME = init.fex
+
+CC = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)gcc
+CPP = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)g++
+LD = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)ld
+AS = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)as
+OBJDUMP = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)objdump
+
+GIT_COMMIT = $(shell git rev-parse HEAD)
+GIT_COMMIT_SHORT = $(shell git rev-parse --short HEAD)
+
+ifeq ($(OSARCH), amd64)
+S_SOURCES = $(shell find ./ -type f -name '*.S' -not -path "./arch/i686/*" -not -path "./arch/aarch64/*")
+C_SOURCES = $(shell find ./ -type f -name '*.c' -not -path "./arch/i686/*" -not -path "./arch/aarch64/*")
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp' -not -path "./arch/i686/*" -not -path "./arch/aarch64/*")
+else ifeq ($(OSARCH), i686)
+S_SOURCES = $(shell find ./ -type f -name '*.S' -not -path "./arch/amd64/*" -not -path "./arch/aarch64/*")
+C_SOURCES = $(shell find ./ -type f -name '*.c' -not -path "./arch/amd64/*" -not -path "./arch/aarch64/*")
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp' -not -path "./arch/amd64/*" -not -path "./arch/aarch64/*")
+else ifeq ($(OSARCH), aarch64)
+S_SOURCES = $(shell find ./ -type f -name '*.S' -not -path "./arch/amd64/*" -not -path "./arch/i686/*")
+C_SOURCES = $(shell find ./ -type f -name '*.c' -not -path "./arch/amd64/*" -not -path "./arch/i686/*")
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp' -not -path "./arch/amd64/*" -not -path "./arch/i686/*")
+endif
+HEADERS = $(sort $(dir $(wildcard ./include/*)))
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(ASM_SOURCES:.asm=.o) $(S_SOURCES:.S=.o) $(PSF_SOURCES:.psf=.o) $(BMP_SOURCES:.bmp=.o)
+INCLUDE_DIR = ./include
+
+LDFLAGS := 									\
+	-fPIC -fno-pie 							\
+	-Wl,-static,--no-dynamic-linker,-ztext 	\
+	-nostdlib -nodefaultlibs -nolibc  		\
+	-zmax-page-size=0x1000					\
+	-Wl,-Map file.map -shared
+
+WARNCFLAG = -Wall -Wextra
+
+CFLAGS :=										\
+	-I$(INCLUDE_DIR)							\
+	-DGIT_COMMIT='"$(GIT_COMMIT)"'				\
+	-DGIT_COMMIT_SHORT='"$(GIT_COMMIT_SHORT)"'
+
+ifeq ($(OSARCH), amd64)
+
+CFLAGS += -fPIC -fno-pie -mno-80387 -mno-mmx -mno-3dnow	\
+		  -mno-red-zone -mno-sse -mno-sse2				\
+		  -march=x86-64 -pipe							\
+		  -mcmodel=kernel -msoft-float -fno-builtin
+LDFLAGS += -Tarch/amd64/linker.ld
+
+else ifeq ($(OSARCH), i686)
+
+CFLAGS += -fPIC -fno-pie -mno-80387 -mno-mmx -mno-3dnow	\
+		  -mno-red-zone -mno-sse -mno-sse2				\
+		  -march=i686 -pipe -msoft-float -fno-builtin
+LDFLAGS += -Tarch/i686/linker.ld
+
+else ifeq ($(OSARCH), aarch64)
+
+CFLAGS += -pipe -fno-builtin -fPIC
+LDFLAGS += -Tarch/aarch64/linker.ld
+
+endif
+
+build: $(FILENAME)
+ifeq ($(OSARCH), amd64)
+	$(OBJDUMP) -b binary -D -m i386:x86-64 -d $(FILENAME) > file_dump.map
+else ifeq ($(OSARCH), i686)
+
+else ifeq ($(OSARCH), aarch64)
+
+endif
+	mv $(FILENAME) ../../out/$(FILENAME)
+
+$(FILENAME): $(OBJ)
+	$(CC) $(LDFLAGS) $(OBJ) -o $@
+
+%.o: %.c $(HEADERS)
+	$(info Compiling $<)
+	$(CC) $(CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
+
+%.o: %.cpp $(HEADERS)
+	$(info Compiling $<)
+	$(CPP) $(CFLAGS) $(WARNCFLAG) -std=c++20 -fexceptions -c $< -o $@ -fno-rtti
+
+%.o: %.S
+	$(info Compiling $<)
+ifeq ($(OSARCH), amd64)
+	$(AS) -o $@ $<
+else ifeq ($(OSARCH), i686)
+	$(AS) -o $@ $<
+else ifeq ($(OSARCH), aarch64)
+	$(AS) -o $@ $<
+endif
+
+clean:
+	rm -f *.o file.map file_dump.map $(OBJ)
diff --git a/apps/system/init/arch/amd64/linker.ld b/apps/system/init/arch/amd64/linker.ld
new file mode 100644
index 0000000..2a9846f
--- /dev/null
+++ b/apps/system/init/arch/amd64/linker.ld
@@ -0,0 +1,41 @@
+/* EXPERIMENTAL */
+
+OUTPUT_FORMAT(binary)
+OUTPUT_ARCH(i386:x86-64)
+
+ENTRY(_start)
+
+SECTIONS
+{
+    .header :
+    {
+        *(.header .header.*)
+    }
+
+    .text :
+    {
+        *(.text .text.*)
+    }
+
+    .data :
+    {
+        *(.data .data.*)
+    }
+
+    .rodata :
+    {
+        *(.rodata .rodata.*)
+    }
+
+    .bss :
+    {
+        *(COMMON)
+        *(.bss .bss.*)
+    }
+
+    /DISCARD/ :
+    {
+        *(.eh_frame)
+        *(.note .note.*)
+    }
+}
diff --git a/apps/system/init/init.cpp b/apps/system/init/init.cpp
new file mode 100644
index 0000000..4869dfd
--- /dev/null
+++ b/apps/system/init/init.cpp
@@ -0,0 +1,39 @@
+// EXPERIMENTAL
+
+enum FexFormatType
+{
+    FexFormatType_Unknown,
+    FexFormatType_Executable,
+    FexFormatType_Driver
+    /* ... */
+};
+
+enum FexOSType
+{
+    FexOSType_Unknown,
+    FexOSType_Fennix,
+    FexOSType_Linux
+    /* ... */
+};
+
+struct Fex
+{
+    char Magic[4];
+    int Type;
+    int OS;
+    unsigned long Pointer;
+};
+
+extern "C" int _start();
+
+__attribute__((section(".header")))
+Fex header = {
+    .Magic = {'F', 'E', 'X', '\0'},
+    .Type = FexFormatType_Executable,
+    .OS = FexOSType_Fennix,
+    .Pointer = (unsigned long)_start};
+
+extern "C" int _start()
+{
+    return 0;
+}