Updated libc

libc/Makefile

@@ -1,12 +1,8 @@
 build:
 	cp include/* ../out/system/include
 	make --quiet -C runtime build
-	make --quiet -C libgcc build
-	make --quiet -C libssp build
 	make --quiet -C src build
 
 clean:
-	make --quiet -C runtime clean
-	make --quiet -C libgcc clean
-	make --quiet -C libssp clean
-	make --quiet -C src clean
+	make -C runtime clean
+	make -C src clean

libc/runtime/Makefile

@@ -2,12 +2,13 @@
 include ../../../Makefile.conf
 
 CC = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)gcc
+AS = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)as
 NASM = /usr/bin/nasm
 
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-S_SOURCES = $(shell find ./ -type f -name '*.s')
+S_SOURCES = $(shell find ./ -type f -name '*.S')
 ASM_SOURCES = $(shell find ./ -type f -name '*.asm')
-OBJ = ${C_SOURCES:.c=.o} ${ASM_SOURCES:.asm=.o} ${S_SOURCES:.s=.o}
+OBJ = ${C_SOURCES:.c=.o} ${ASM_SOURCES:.asm=.o} ${S_SOURCES:.S=.o}
 
 ifeq ($(OSARCH), amd64)
 ASM_ARCH := elf64
@@ -19,13 +20,13 @@ build: $(OBJ)
 	mv $^ ../../out/system/lib/
 
 %.o: %.c
-	$(CC) -nostdlib -std=c17 -c $< -o $@
+	$(CC) -nostdlib -mno-red-zone -std=c17 -c $< -o $@
 
 %.o: %.asm
 	$(NASM) $< -f $(ASM_ARCH) -o $@
 
-%.bin: %.s
-	$(NASM) $< -f $(ASM_ARCH) -o $@
+%.o: %.S
+	$(AS) -c $< -o $@
 
 clean:
 

libc/runtime/crt0.S

@@ -0,0 +1,23 @@
+# https://wiki.osdev.org/Creating_a_C_Library
+.section .text
+
+.global _start
+_start:
+	movq $0, %rbp
+	pushq %rbp
+	pushq %rbp
+	movq %rsp, %rbp
+
+	pushq %rsi
+	pushq %rdi
+
+	call __libc_init
+	call _init
+
+	popq %rdi
+	popq %rsi
+
+	call main
+	movl %eax, %edi
+	call _exit
+.size _start, . - _start

libc/runtime/crt0.c

@@ -1,15 +0,0 @@
-int main(int argc, char *argv[], char *envp[]);
-
-void _start()
-{
-    register int argc __asm__("rdi");
-    register char **argv __asm__("rsi");
-    register char **envp __asm__("rdx");
-    int mainret = main((int)argc, (char **)argv, (char **)envp);
-    __asm__ __volatile__("syscall"
-                         :
-                         : "a"(0), "D"(mainret)
-                         : "rcx", "r11", "memory");
-    return;
-}
-// C stuff

libc/runtime/crt1.S

@@ -0,0 +1,23 @@
+# https://wiki.osdev.org/Creating_a_C_Library
+.section .text
+
+.global _start
+_start:
+	movq $0, %rbp
+	pushq %rbp
+	pushq %rbp
+	movq %rsp, %rbp
+
+	pushq %rsi
+	pushq %rdi
+
+	call __libc_init
+	call _init
+
+	popq %rdi
+	popq %rsi
+
+	call main
+	movl %eax, %edi
+	call _exit
+.size _start, . - _start

libc/runtime/crt1.c

@@ -1,15 +0,0 @@
-int main(int argc, char *argv[], char *envp[]);
-
-void _start()
-{
-    register int argc __asm__("rdi");
-    register char **argv __asm__("rsi");
-    register char **envp __asm__("rdx");
-    int mainret = main((int)argc, (char **)argv, (char **)envp);
-    __asm__ __volatile__("syscall"
-                         :
-                         : "a"(0), "D"(mainret)
-                         : "rcx", "r11", "memory");
-    return;
-}
-// C++ stuff

libc/runtime/crtbegin.S

@@ -0,0 +1,14 @@
+# I WILL PLACE HERE THE crti.o BECAUSE GCC REFUSE TO LINK IT AND I DON'T KNOW WHY
+.section .init
+.global _init
+.type _init, @function
+_init:
+	push %rbp
+	movq %rsp, %rbp
+
+.section .fini
+.global _fini
+.type _fini, @function
+_fini:
+	push %rbp
+	movq %rsp, %rbp

libc/runtime/crtbegin.c

@@ -1 +0,0 @@
-// C++ constructor/destructor stuff

libc/runtime/crtend.S

@@ -0,0 +1,8 @@
+# I WILL PLACE HERE THE crtn.o BECAUSE GCC REFUSE TO LINK IT AND I DON'T KNOW WHY
+.section .init
+	popq %rbp
+	ret
+
+.section .fini
+	popq %rbp
+	ret

libc/runtime/crtend.c

@@ -1 +0,0 @@
-// C++ constructor/destructor stuff

libc/src/InitArray.c

@@ -0,0 +1,21 @@
+extern void (*__preinit_array_start[])(void) __attribute__((weak));
+extern void (*__preinit_array_end[])(void) __attribute__((weak));
+extern void (*__init_array_start[])(void) __attribute__((weak));
+extern void (*__init_array_end[])(void) __attribute__((weak));
+extern void (*__fini_array_start []) (void) __attribute__((weak));
+extern void (*__fini_array_end []) (void) __attribute__((weak));
+
+extern void _init(void);
+
+void __libc_init_array(void)
+{
+    unsigned long Count = __preinit_array_end - __preinit_array_start;
+    for (unsigned long i = 0; i < Count; i++)
+        __preinit_array_start[i]();
+
+    _init();
+
+    Count = __init_array_end - __init_array_start;
+    for (unsigned long i = 0; i < Count; i++)
+        __init_array_start[i]();
+}

libc/src/Makefile

@@ -8,13 +8,14 @@ OBJECT_NAME=lib$(NAME).a
 OUTPUT_DIR=../../out/system/lib/
 
 CC = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)gcc
+AS = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)as
 AR = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)ar
 NASM = /usr/bin/nasm
 
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-S_SOURCES = $(shell find ./ -type f -name '*.s')
+S_SOURCES = $(shell find ./ -type f -name '*.S')
 ASM_SOURCES = $(shell find ./ -type f -name '*.asm')
-OBJ = ${C_SOURCES:.c=.o} ${ASM_SOURCES:.asm=.o} ${S_SOURCES:.s=.o}
+OBJ = ${C_SOURCES:.c=.o} ${ASM_SOURCES:.asm=.o} ${S_SOURCES:.S=.o}
 
 INCLUDE_DIR = ../include
 
@@ -24,7 +25,7 @@ else ifeq ($(OSARCH), i686)
 ASM_ARCH := elf32
 endif
 
-CFLAGS := -fPIC -I$(INCLUDE_DIR)
+CFLAGS := -fPIC -mno-red-zone -I$(INCLUDE_DIR)
 
 build: $(OBJECT_NAME)
 
@@ -37,6 +38,9 @@ $(OBJECT_NAME): $(OBJ)
 %.o: %.cpp $(HEADERS) $(HEADERS2)
 	$(CC) $(CFLAGS) -std=c++20 -c $< -o $@
 
+%.o: %.S
+	$(AS) -c $< -o $@
+
 %.o: %.asm
 	$(NASM) $< -f $(ASM_ARCH) -o $@
 

libc/src/Runtime.c

@@ -0,0 +1,18 @@
+
+extern void __libc_init_array();
+
+void __libc_init()
+{
+    __libc_init_array();
+}
+
+void _exit(int Code)
+{
+    __asm__ __volatile__("syscall"
+                         :
+                         : "a"(0), "D"(Code)
+                         : "rcx", "r11", "memory");
+
+    while (1)
+        __asm__ __volatile__("hlt");
+}