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userspace: Rewrite everything

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Everything.

Signed-off-by: EnderIce2 <enderice2@protonmail.com>
This commit is contained in:
EnderIce2
2025-01-04 06:27:54 +02:00
parent dea36a0228
commit 6dae34debd
135 changed files with 11707 additions and 5286 deletions
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32
Userspace/libc/runtime/Makefile
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@ -1,20 +1,10 @@
# Config file
include ../../../config.mk
default:
$(error Do not run this Makefile directly!)
CC = ../../../$(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')
ASM_SOURCES = $(shell find ./ -type f -name '*.asm')
OBJ = ${C_SOURCES:.c=.o} ${ASM_SOURCES:.asm=.o} ${S_SOURCES:.S=.o}
ifeq ($(OSARCH), amd64)
ASM_ARCH := elf64
else ifeq ($(OSARCH), i386)
ASM_ARCH := elf32
endif
C_SOURCES = $(shell find ./ -type f -name '*.c')
CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
OBJ = ${S_SOURCES:.S=.o} ${C_SOURCES:.c=.o} ${CXX_SOURCES:.cpp=.o}
CRTBEGIN_PATH = $(shell $(CC) -print-file-name=crtbegin.o)
CRTEND_PATH = $(shell $(CC) -print-file-name=crtend.o)
@ -22,20 +12,16 @@ CRTI_PATH = $(shell $(CC) -print-file-name=crti.o)
CRTN_PATH = $(shell $(CC) -print-file-name=crtn.o)
build: $(OBJ)
mv $^ ../../out/lib/
cp $(CRTBEGIN_PATH) $(CRTEND_PATH) $(CRTI_PATH) $(CRTN_PATH) ../../out/lib/
cp $^ ../../out/lib/
cp $(CRTBEGIN_PATH) $(CRTEND_PATH) $(CRTI_PATH) $(CRTN_PATH) $(WORKSPACE_DIR)/out/lib/
%.o: %.c
$(info Compiling $<)
$(CC) -nostdlib -mno-red-zone -std=c17 -c $< -o $@
%.o: %.asm
$(info Compiling $<)
$(NASM) $< -f $(ASM_ARCH) -o $@
$(CC) -nostdlib -mno-red-zone -std=c17 -DLIBC_GIT_COMMIT='"$(shell git rev-parse HEAD)"' -c $< -o $@
%.o: %.S
$(info Compiling $<)
$(AS) -c $< -o $@
clean:
rm -f $(OBJ)

100
Userspace/libc/runtime/Scrt1.c Normal file
View File

@ -0,0 +1,100 @@
/*
This file is part of Fennix Userspace.
Fennix Userspace is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Userspace is distributed in the hope that 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 Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
*/
typedef void (*fct)(void);
#define asm __asm__ __volatile__
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));
void __crt_init_array(void)
{
for (fct *func = __init_array_start; func != __init_array_end; func++)
(*func)();
}
void __crt_fini_array(void)
{
for (fct *func = __fini_array_start; func != __fini_array_end; func++)
(*func)();
}
__attribute__((naked, used, no_stack_protector, section(".text"))) void _start()
{
asm("movq $0, %rbp\n"
"pushq %rbp\n"
"pushq %rbp\n"
"movq %rsp, %rbp\n"
"pushq %rcx\n"
"pushq %rdx\n"
"pushq %rsi\n"
"pushq %rdi\n"
"call __libc_init\n"
"call __crt_init_array\n"
"popq %rdi\n"
"popq %rsi\n"
"popq %rdx\n"
"popq %rcx\n"
"call main\n"
"pushq %rax\n"
"call __crt_fini_array\n"
"popq %rax\n"
"movl %eax, %edi\n"
"call _exit\n");
}
/* These are declared in GNU ld */
enum
{
NT_FNX_ABI_TAG = 1,
NT_FNX_VERSION = 2,
NT_FNX_BUILD_ID = 3,
NT_FNX_ARCH = 4
};
typedef struct Elf_Nhdr
{
__UINT32_TYPE__ n_namesz;
__UINT32_TYPE__ n_descsz;
__UINT32_TYPE__ n_type;
char n_name[];
} __attribute__((packed)) Elf_Nhdr;
const struct
{
Elf_Nhdr header;
char name[4];
__UINT32_TYPE__ desc[4];
} __abi_tag __attribute__((aligned(4), section(".note.ABI-tag"))) = {
.header = {
.n_namesz = 4, /* "FNX" + '\0' */
.n_descsz = sizeof(__UINT32_TYPE__) * 4, /* Description Size */
.n_type = NT_FNX_ABI_TAG, /* Type */
},
.name = "FNX",
.desc = {0, 0, 0, 0},
};

21
Userspace/libc/runtime/crt0.c
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@ -1,21 +0,0 @@
// https://wiki.osdev.org/Creating_a_C_Library
#define asm __asm__ __volatile__
__attribute__((naked, used, no_stack_protector, section(".text"))) void _start()
{
asm("movq $0, %rbp\n");
asm("pushq %rbp\n");
asm("pushq %rbp\n");
asm("movq %rsp, %rbp\n");
asm("pushq %rcx\n"
"pushq %rdx\n"
"pushq %rsi\n"
"pushq %rdi\n");
asm("call __libc_init\n");
asm("popq %rdi\n"
"popq %rsi\n"
"popq %rdx\n"
"popq %rcx\n");
asm("call main\n");
asm("movl %eax, %edi\n");
asm("call _exit\n");
}

105
Userspace/libc/runtime/crt1.c
View File

@ -1,21 +1,100 @@
// https://wiki.osdev.org/Creating_a_C_Library
/*
This file is part of Fennix Userspace.
Fennix Userspace is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Userspace is distributed in the hope that 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 Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
*/
typedef void (*fct)(void);
#define asm __asm__ __volatile__
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));
void __crt_init_array(void)
{
for (fct *func = __init_array_start; func != __init_array_end; func++)
(*func)();
}
void __crt_fini_array(void)
{
for (fct *func = __fini_array_start; func != __fini_array_end; func++)
(*func)();
}
__attribute__((naked, used, no_stack_protector, section(".text"))) void _start()
{
asm("movq $0, %rbp\n");
asm("pushq %rbp\n");
asm("pushq %rbp\n");
asm("movq %rsp, %rbp\n");
asm("pushq %rcx\n"
asm("movq $0, %rbp\n"
"pushq %rbp\n"
"pushq %rbp\n"
"movq %rsp, %rbp\n"
"pushq %rcx\n"
"pushq %rdx\n"
"pushq %rsi\n"
"pushq %rdi\n");
asm("call __libc_init\n");
asm("popq %rdi\n"
"pushq %rdi\n"
"call __libc_init\n"
"call __crt_init_array\n"
"popq %rdi\n"
"popq %rsi\n"
"popq %rdx\n"
"popq %rcx\n");
asm("call main\n");
asm("movl %eax, %edi\n");
asm("call _exit\n");
"popq %rcx\n"
"call main\n"
"pushq %rax\n"
"call __crt_fini_array\n"
"popq %rax\n"
"movl %eax, %edi\n"
"call _exit\n");
}
/* These are declared in GNU ld */
enum
{
NT_FNX_ABI_TAG = 1,
NT_FNX_VERSION = 2,
NT_FNX_BUILD_ID = 3,
NT_FNX_ARCH = 4
};
typedef struct Elf_Nhdr
{
__UINT32_TYPE__ n_namesz;
__UINT32_TYPE__ n_descsz;
__UINT32_TYPE__ n_type;
char n_name[];
} __attribute__((packed)) Elf_Nhdr;
const struct
{
Elf_Nhdr header;
char name[4];
__UINT32_TYPE__ desc[4];
} __abi_tag __attribute__((aligned(4), section(".note.ABI-tag"))) = {
.header = {
.n_namesz = 4, /* "FNX" + '\0' */
.n_descsz = sizeof(__UINT32_TYPE__) * 4, /* Description Size */
.n_type = NT_FNX_ABI_TAG, /* Type */
},
.name = "FNX",
.desc = {0, 0, 0, 0},
};