Updated libc

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