Merge pull request #1 from pointertobios/main

加入Rust语言原生支持

.gitignore

@@ -5,4 +5,5 @@
 *.elf
 metaverse_kernel
 kerndisass.txt
+orgprof
 /build

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "rustlib"]
+	path = rustlib
+	url = https://github.com/metaverse-kernel/rustenv.git

README.md

@@ -2,7 +2,11 @@
 
 基于multiboot2引导的64位内核。
 
-## 试用
+## 获取
+
+```bash
+git clone --recursive https://github.com/metaverse-kernel/kernel-dev.git
+```
 
 * 编译
 
@@ -66,4 +70,4 @@ make debug
 
 版权所有 (c) 2023 - 现在 Random World Studio 保留所有权利。
 
-本软件使用MIT开源许可证进行许可。详细信息请参阅许可证文件。
+本软件通过MIT开源许可证开源。详细信息请参阅许可证文件。

include/kernel/memm.h

@@ -64,9 +64,6 @@ typedef struct __allocator_iterator_t
 {
     allocator_t *allocator;
     struct __allocator_iterator_t *left, *right;
-
-    // 这个节点的内存空间处于的那个分配器
-    allocator_t *owned_allocator;
 } allocator_iterator_t;
 
 /*
@@ -137,13 +134,19 @@ pid=0时为内核分配
 所有内存在内核空间都有对物理内存空间的直接映射，也就是线性地址与物理地址相同，称为内核地址
 
 allocator对象在进程与内核之间传递时一律使用内核空间的映射地址
+
+## 要求在返回的地址前16字节处保留8字节空间作为它所在的allocator地址，并且不需要分配器的具体实现做这个事
  */
-void *memm_allocate(usize size, usize pid, allocator_t **allocator);
+void *memm_allocate(usize size, usize pid);
+#define memm_addr_set_allocator(mem, allocator) \
+    *(allocator_t **)(mem - 16) = allocator;
+#define memm_addr_get_allocator(mem) \
+    ((*(allocator_t **)(mem - 16)))
 
 /*
 释放内存
  */
-void memm_free(allocator_t *allocator, void *mem);
+void memm_free(void *mem);
 
 /*
 寻找大小合适的一组页

include/kernel/memm/allocator/raw.h

@@ -2,6 +2,7 @@
 #define RAW_H 1
 
 #include <types.h>
+#include <kernel/memm.h>
 
 #define MEMM_RAW_ALLOCATOR 1
 
@@ -9,6 +10,8 @@ typedef struct __raw_allocator_cell
 {
     usize capacity;         // 是content的长度
     usize length;           // 是实际使用的长度
+    allocator_t *allocator; // 所在的分配器
+    usize reserved;
     u8 content[0];
 } raw_allocator_cell;
 #define raw_allocator_next_cell(cell) (raw_allocator_cell *)((void *)((cell)->content) + (cell)->capacity)

include/kernel/tty.h

@@ -59,8 +59,6 @@ typedef struct __tty
     tty_typeinfo typeinfo;
     tty_mode mode;
     tty_text_state text;
-
-    allocator_t *allocator;
 } tty;
 
 // tty控制器

include/libk/lst.h

@@ -16,10 +16,6 @@ typedef struct __lst_line_t
 typedef struct __lst_iterator_t
 {
     lst_line_t line;
-    // 这个指针是kernel/memm.h中的allocator_t *
-    // 代表当前lst_line_index_t对象在allocate时使用的allocator
-    // 用的话会造成递归include
-    void *allocator;
     struct __lst_iterator_t *next;
 } lst_iterator_t;
 

rustlib

@@ -0,0 +1 @@
+Subproject commit f8d0d53a23b5a91848d8f6491122b69f79994537

src/Makefile

@@ -1,5 +1,6 @@
 ARCH := $(shell uname -m)
-SOURCE := $(shell pwd)/scripts
+PWD := $(shell pwd)
+SOURCE := ${PWD}/scripts
 ifeq (${ARCH},x86_64)
 	ASM = nasm
 	ASMFLAGS = -f elf64
@@ -11,14 +12,27 @@ endif
 
 SUBOBJS = kernel/kernel.o libk/libk.o
 
-DEFINES = ARCH="${ARCH}" ASM="${ASM}" ASMFLAGS="${ASMFLAGS}" SOURCE="${SOURCE}"
+DEFINES = ARCH="${ARCH}" ASM="${ASM}" ASMFLAGS="${ASMFLAGS}" SOURCE="${SOURCE}" PWD="${PWD}"
 ifdef release
 	DEFINES := ${DEFINES} release=1
 endif
 
+RUSTLIB_PATH = ../rustlib/${ARCH}/lib
+RUST_LIBS = "${RUSTLIB_PATH}/libaddr2line.rlib" "${RUSTLIB_PATH}/libadler.rlib" \
+	"${RUSTLIB_PATH}/liballoc.rlib" "${RUSTLIB_PATH}/libcfg_if.rlib" "${RUSTLIB_PATH}/libcompiler_builtins.rlib" \
+	"${RUSTLIB_PATH}/libcore.rlib" "${RUSTLIB_PATH}/libgetopts.rlib" "${RUSTLIB_PATH}/libgimli.rlib" \
+	"${RUSTLIB_PATH}/libhashbrown.rlib" "${RUSTLIB_PATH}/libmemchr.rlib" "${RUSTLIB_PATH}/libminiz_oxide.rlib" \
+	"${RUSTLIB_PATH}/libobject.rlib" "${RUSTLIB_PATH}/libpanic_abort.rlib" "${RUSTLIB_PATH}/libpanic_unwind.rlib" \
+	"${RUSTLIB_PATH}/libproc_macro.rlib" "${RUSTLIB_PATH}/libprofiler_builtins.rlib" \
+	"${RUSTLIB_PATH}/librustc_demangle.rlib" "${RUSTLIB_PATH}/librustc_std_workspace_alloc.rlib" \
+	"${RUSTLIB_PATH}/librustc_std_workspace_core.rlib" "${RUSTLIB_PATH}/librustc_std_workspace_std.rlib" \
+	"${RUSTLIB_PATH}/libstd_detect.rlib" "${RUSTLIB_PATH}/libstd.rlib" "${RUSTLIB_PATH}/libsysroot.rlib" \
+	"${RUSTLIB_PATH}/libtest.rlib" "${RUSTLIB_PATH}/libunicode_width.rlib" "${RUSTLIB_PATH}/libunwind.rlib"
+
 metaverse.elf: kernel libk metaverse.lds
 	@echo -e "\e[1;33mld\e[0m \e[1;32m$@\e[0m \e[34m<--\e[0m \e[32m${SUBOBJS}\e[0m"
-	@ld -T metaverse.lds -Map=metaverse.map -o $@ ${SUBOBJS} 2>&1 | "${SOURCE}/colorize" "warning:=yellow" "error:=red" "ld=lyellow"
+	@ld -T metaverse.lds -Map=metaverse.map -unresolved-symbols=ignore-all -o $@ ${SUBOBJS} ${RUST_LIBS} \
+		2>&1 | "${SOURCE}/colorize" "warning:=yellow" "error:=red" "ld=lyellow"
 
 .PHONY: kernel libk all clear postproc
 

src/kernel/Makefile

@@ -1,15 +1,17 @@
+.SUFFIXES:
+
 ################################
 # C语言环境变量
 
 CC = gcc
-CCFLAGS = -m64 -mcmodel=large -I ../include \
+CCFLAGS = -m64 -mcmodel=large -I ../../include \
 			-fno-stack-protector -fno-exceptions \
 			-fno-builtin -nostdinc -nostdlib
 ifdef release
 	CCFLAGS := ${CCFLAGS} -O2
 endif
 
-C_SRCS = main.c tty.c klog.c font.c memm.c memm_${ARCH}.c raw.c
+C_SRCS = main.c tty.c font.c memm.c memm_${ARCH}.c raw.c
 C_OBJS = ${C_SRCS:.c=.c.o}
 
 ################################
@@ -17,9 +19,10 @@ C_OBJS = ${C_SRCS:.c=.c.o}
 ################################
 # rust语音环境变量
 
-RSCFLAGS = --emit=obj --target x86_64-unknown-linux-gnu --crate-type=bin
+RSCFLAGS = --emit obj --crate-type lib \
+	-L crate="${PWD}/../rustlib/${ARCH}/src/"
 
-RS_SRCS =
+RS_SRCS = klog.rs memm.rs
 RS_OBJS = ${RS_SRCS:.rs=.rs.o}
 
 ################################
@@ -34,14 +37,14 @@ endif
 ASMFLAGS := ${ASMFLAGS}
 ASMFLAGS32 = -f elf32
 
-S_SRCS = entry32.s entry.s memm_${ARCH}_s.s
+S_SRCS = entry32.s entry.s memm_${ARCH}.s
 S_OBJS = ${S_SRCS:.s=.s.o}
 
 ################################
 
 OBJS = ${S_OBJS} ${C_OBJS} ${RS_OBJS}
 
-STRIP_SECS = -R .comment -R .note.GNU-stack
+STRIP_SECS = -R .note.GNU-stack
 
 OBJCOPY_FLAGS = ${STRIP_SECS}
 

src/kernel/main.c

@@ -47,8 +47,6 @@ void kmain(void *mb2_bootinfo)
     tty_text_print(tty0, "Metaverse", gen_color(0x0a, 0xee, 0x0a), gen_color(0, 0, 0));
     tty_text_print(tty0, "!\n", gen_color(0xee, 0xee, 0xee), gen_color(0, 0, 0));
 
-    // 初始化内核日志模块
-
     while (true)
     {
     }

src/kernel/memm/memm.c

@@ -29,7 +29,6 @@ mem_manager_t *memm_new(usize mem_size)
     alcatr_ind->allocator = allocator0;
     alcatr_ind->left = nullptr;
     alcatr_ind->right = nullptr;
-    alcatr_ind->owned_allocator = allocator0;
 
     memory_manager.allocators = alcatr_ind;
 
@@ -159,11 +158,12 @@ static void insert_allocator(allocator_iterator_t *iter, allocator_iterator_t *i
     }
 }
 
-void *memm_allocate(usize size, usize pid, allocator_t **allocator)
+void *memm_allocate(usize size, usize pid)
 {
     usize orgsize = size;
     // 从分配器树中分配内存
-    void *ptr = memm_find_and_allocate(memory_manager.allocators, size, pid, allocator);
+    allocator_t *allocator;
+    void *ptr = memm_find_and_allocate(memory_manager.allocators, size, pid, &allocator);
     if (ptr != nullptr)
         goto after_allocation;
 
@@ -190,11 +190,9 @@ void *memm_allocate(usize size, usize pid, allocator_t **allocator)
     allocator_t *new_allocator =
         memm_allocator_new((void *)(allocator_start * MEMM_PAGE_SIZE), size * MEMM_PAGE_SIZE,
                            MEMM_RAW_ALLOCATOR, pid);
-    *allocator = new_allocator;
+    allocator = new_allocator;
 
-    allocator_t *all;
-    allocator_iterator_t *allind = memm_allocate(sizeof(allocator_iterator_t), 0, &all);
-    allind->owned_allocator = all;
+    allocator_iterator_t *allind = memm_allocate(sizeof(allocator_iterator_t), 0);
     allind->allocator = new_allocator;
     allind->left = nullptr;
     allind->right = nullptr;
@@ -202,6 +200,7 @@ void *memm_allocate(usize size, usize pid, allocator_t **allocator)
     ptr = new_allocator->allocate(&new_allocator->allocator_instance, orgsize, 0);
 
 after_allocation:
+    memm_addr_set_allocator(ptr, allocator);
     if (pid != 0)
     { // TODO 进程管理中应该有一个用户地址-内核地址映射表
       // 在进程分配时将页映射到用户空间中，并将这个映射关系记录进这个表中
@@ -210,8 +209,9 @@ after_allocation:
     return ptr;
 }
 
-void memm_free(allocator_t *allocator, void *mem)
+void memm_free(void *mem)
 {
+    allocator_t *allocator = memm_addr_get_allocator(mem);
     if (is_user_address((u64)mem))
     { // TODO 对于用户空间的地址需要先转换到内核地址后释放
     }

src/kernel/memm/memm.rs

@@ -0,0 +1,23 @@
+extern crate core;
+
+use core::alloc::{GlobalAlloc, Layout};
+
+extern "C" {
+    pub fn memm_allocate(size: usize, pid: usize) -> *mut u8;
+    pub fn memm_free(mem: *mut u8);
+}
+
+pub struct KernelAllocator {}
+
+unsafe impl GlobalAlloc for KernelAllocator {
+    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
+        memm_allocate(layout.size(), 0)
+    }
+
+    unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
+        memm_free(ptr);
+    }
+}
+
+#[global_allocator]
+static KERNEL_ALLOCATOR: KernelAllocator = KernelAllocator {};

src/kernel/memm/mod.rs

@@ -0,0 +1,3 @@
+pub mod memm;
+
+

src/kernel/mod.rs

@@ -0,0 +1 @@
+pub mod memm;

src/kernel/tty/tty.c

@@ -16,12 +16,10 @@ tty_controller_t *tty_controller_new()
 
 tty *tty_new(tty_type type, tty_mode mode)
 {
-    allocator_t *allocator;
-    tty *__tty = memm_allocate(sizeof(tty), 0, &allocator);
+    tty *__tty = memm_allocate(sizeof(tty), 0);
     memset(__tty, 0, sizeof(tty));
     __tty->type = type;
     __tty->mode = mode;
-    __tty->allocator = allocator;
     tty *res = nullptr;
     for (usize i = 0; i < TTY_MAX_NUM; ++i)
     {

src/lib.rs

@@ -0,0 +1,2 @@
+pub mod kernel;
+pub mod libk;

src/libk/Makefile

@@ -1,13 +1,10 @@
-ARCH := $(shell uname -m)
-ifdef release
-	release = 1
-endif
+.SUFFIXES:
 
 ################################
 # C语言环境变量
 
 CC = gcc
-CCFLAGS = -m64 -mcmodel=large -I ../include \
+CCFLAGS = -m64 -mcmodel=large -I ../../include \
 			-fno-stack-protector -fno-exceptions \
 			-fno-builtin -nostdinc -nostdlib
 ifdef release
@@ -22,7 +19,8 @@ C_OBJS = ${C_SRCS:.c=.c.o}
 ################################
 # rust语音环境变量
 
-RSCFLAGS = --emit=obj --target x86_64-unknown-linux-gnu --crate-type=bin
+RSCFLAGS = --emit obj --crate-type lib \
+	-L crate="~/.rustup/toolchains/stable-${ARCH}-unknown-linux-gnu/lib/rustlib/src/rust/library/"
 
 RS_SRCS =
 RS_OBJS = ${RS_SRCS:.rs=.rs.o}
@@ -45,7 +43,7 @@ S_OBJS = ${S_SRCS:.s=.s.o}
 
 OBJS = ${S_OBJS} ${C_OBJS} ${RS_OBJS}
 
-STRIP_SECS = -R .comment -R .note.GNU-stack
+STRIP_SECS = -R .note.GNU-stack
 
 OBJCOPY_FLAGS = ${STRIP_SECS}
 

src/libk/lst.c

@@ -7,11 +7,9 @@
 
 lst_iterator_t *lst_new(usize start, usize end)
 {
-    allocator_t *allocator;
-    lst_iterator_t *lst = memm_allocate(sizeof(lst_iterator_t), 0, &allocator);
+    lst_iterator_t *lst = memm_allocate(sizeof(lst_iterator_t), 0);
     lst->line.left = start;
     lst->line.right = end;
-    lst->allocator = allocator;
     lst->next = nullptr;
     return lst;
 }
@@ -130,9 +128,7 @@ bool lst_add(lst_iterator_t *lst, usize left, usize right, bool force)
                 lst->line.left = left;
             else
             {
-                allocator_t *alloctr;
-                lst_iterator_t *new_node = memm_allocate(sizeof(lst_iterator_t), 0, &alloctr);
-                new_node->allocator = alloctr;
+                lst_iterator_t *new_node = memm_allocate(sizeof(lst_iterator_t), 0);
                 new_node->line = line;
                 new_node->next = lst;
                 if (last != nullptr)
@@ -169,7 +165,7 @@ bool lst_add(lst_iterator_t *lst, usize left, usize right, bool force)
                     }
                     tmplast = *tmpnode;
                     lst_iterator_t *t = lst_next(tmpnode);
-                    memm_free(tmpnode->allocator, tmpnode);
+                    memm_free(tmpnode);
                     tmpnode = t;
                 }
                 lst->line.right = max(tmplast.line.right, right);

src/metaverse.lds

@@ -40,6 +40,10 @@ SECTIONS {
     {
         *(.bss)
     }
+    .comment :
+    {
+        *(.comment)
+    }
     .eh_frame :
     {
         *(.eh_frame)

src/scripts/depcheck

@@ -34,7 +34,7 @@ softwares = {
     "doas": ["doas"],
     "gcc": ["gcc"],
     "nasm": ["nasm"],
-    "rust": ["rustc", "rustdoc", "rust-lldb"],
+    "rust": ["rustup", "rustc", "rustdoc", "rust-lldb"],
     "qemu": ["qemu-img", "qemu-nbd", "qemu-system-"+arch],
 }