更新libc

apps/include/ctype.h

@@ -1,6 +1,11 @@
 #ifndef CRASHPOWEROS_CTYPE_H
 #define CRASHPOWEROS_CTYPE_H
 
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <stdarg.h>
+
 int ispunct(char ch);
 char toupper(char ch);
 char tolower(char ch);

apps/include/math.h

@@ -4,6 +4,16 @@
 #define MIN(i, j) (((i) < (j)) ? (i) : (j))
 #define MAX(i, j) (((i) > (j)) ? (i) : (j))
 
+#define F32_EPSILON 1e-5f
+#define F64_EPSILON 1e-10
+
+#define PI 3.14159265358979323846264338327950288
+#define E 2.718281828459045235360287
+
+#define SQRT2 1.41421356237309504880168872420969807
+
+#define PHI 1.61803398874989484820458683436563811772030917980576
+
 #include <stdint.h>
 
 void srandlevel(unsigned short randlevel_);
@@ -15,5 +25,13 @@ double pow(double a,long long b);
 unsigned long long ull_pow(unsigned long long a,unsigned long long b);
 double sqrt(double x);
 float q_sqrt(float number);
+double mod(double x, double y);
+double sin(double x);
+double cos(double x);
+double tan(double x);
+double asin(double x);
+double acos(double x);
+double atan(double x);
+double atan2(double y, double x);
 
 #endif

apps/include/stdio.h

@@ -10,9 +10,7 @@
 #define BIN 0x0
 #define PLUS 0x10
 
-#include <stdint.h>
-#include <stddef.h>
-#include <stdarg.h>
+#include "ctype.h"
 
 typedef struct FILE {
     unsigned int mode;

apps/include/stdlib.h

@@ -1,7 +1,7 @@
 #ifndef CRASHPOWEROS_STDLIB_H
 #define CRASHPOWEROS_STDLIB_H
 
-#include <stddef.h>
+#include "ctype.h"
 
 long long atoi(const char* s);
 void *malloc(size_t size);

apps/include/string.h

@@ -1,8 +1,7 @@
 #ifndef CRASHPOWEROS_STRING_H
 #define CRASHPOWEROS_STRING_H
 
-#include <stddef.h>
-#include <stdint.h>
+#include "ctype.h"
 
 const char* memchr(const char* buf,char c,unsigned long long count);
 void *memmove(void *dest, const void *src, size_t num);

apps/include/syscall.h

@@ -13,8 +13,7 @@
 #define SYSCALL_VFS_READFILE 10
 #define SYSCALL_VFS_WRITEFILE 11
 
-#include <stdint.h>
-#include <stddef.h>
+#include "ctype.h"
 
 void syscall_print(char* c);
 void syscall_putchar(char c);

apps/libs/Makefile

@@ -1,4 +1,4 @@
-OBJS_PACK = out/syscall.obj out/print.obj out/string.obj out/libc.obj
+OBJS_PACK = out/syscall.obj out/print.obj out/string.obj out/libc.obj out/math.obj
 
 
 default : $(OBJS_PACK)

apps/libs/math.c

@@ -1,4 +1,5 @@
 #include "../include/math.h"
+#include "../include/ctype.h"
 
 static unsigned long long rand_seed = 1 ;
 static unsigned short max_bit = 32 ;
@@ -75,3 +76,80 @@ float q_sqrt(float number){
     y = y * (f - (x * y * y)) ;
     return number * y ;
 }
+
+double mod(double x, double y){
+    return x - (int32_t)(x / y) * y;
+}
+
+double sin(double x){
+    x  = mod(x, 2 * PI);
+    double  sum  = x;
+    double  term = x;
+    int  n    = 1;
+    bool sign = true;
+    while (term > F64_EPSILON || term < -F64_EPSILON) {
+        n    += 2;
+        term *= x * x / (n * (n - 1));
+        sum  += sign ? -term : term;
+        sign  = !sign;
+    }
+    return sum;
+}
+
+double cos(double x){
+    x         = mod(x, 2 * PI);
+    double  sum  = 1;
+    double  term = 1;
+    int  n    = 0;
+    bool sign = true;
+    while (term > F64_EPSILON || term < -F64_EPSILON) {
+        n    += 2;
+        term *= x * x / (n * (n - 1));
+        sum  += sign ? -term : term;
+        sign  = !sign;
+    }
+    return sum;
+}
+
+double tan(double x) {
+    return sin(x) / cos(x);
+}
+
+double asin(double x){
+    double sum  = x;
+    double term = x;
+    int n    = 1;
+    while (term > F64_EPSILON || term < -F64_EPSILON) {
+        term *= (x * x * (2 * n - 1) * (2 * n - 1)) / (2 * n * (2 * n + 1));
+        sum  += term;
+        n++;
+    }
+    return sum;
+}
+
+double acos(double x) {
+    return PI / 2 - asin(x);
+}
+
+double atan(double x){
+    double  sum  = x;
+    double  term = x;
+    int  n    = 1;
+    bool sign = true;
+    while (term > F64_EPSILON || term < -F64_EPSILON) {
+        term *= x * x * (2 * n - 1) / (2 * n + 1);
+        sum  += sign ? -term : term;
+        sign  = !sign;
+        n++;
+    }
+    return sum;
+}
+
+double atan2(double y, double x){
+    if (x > 0) return atan(y / x);
+    if (x < 0 && y >= 0) return atan(y / x) + PI;
+    if (x < 0 && y < 0) return atan(y / x) - PI;
+    if (x == 0 && y > 0) return PI / 2;
+    if (x == 0 && y < 0) return -PI / 2;
+    return 0;
+}

apps/shell/shell.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include "../include/syscall.h"
 #include "../include/string.h"
+#include "../include/math.h"
 
 static int gets(char *buf, int buf_size) {
     int index = 0;
@@ -49,6 +50,10 @@ int main(){
     char *argv[50];
     int argc = -1;
     char *buffer[255];
+
+    double x = sin(12);
+    printf("%08f",x);
+
     while (1){
         syscall_get_cd(buffer);
         printf("%s$ ",buffer);

src/driver/serial.c

@@ -32,7 +32,7 @@ char read_serial() {
 int is_transmit_empty() { return io_in8(SERIAL_PORT + 5) & 0x20; }
 
 void write_serial(char a) {
-    return;
+    //return;
     while (is_transmit_empty() == 0);
     io_out8(SERIAL_PORT, a);
 }

src/driver/vbe.c

@@ -62,11 +62,6 @@ void vbe_scroll() {
 
 void vbe_draw_char(char c, int32_t x, int32_t y) {
     if (c == ' ') {
-        for (int i = 0; i < 16; i++) {
-            for (int j = 0; j < 9; j++) {
-                //screen[(y + i) * width + x + j] = back_color;
-            }
-        }
         return;
     }
 
@@ -79,7 +74,7 @@ void vbe_draw_char(char c, int32_t x, int32_t y) {
         for (int j = 0; j < 9; j++) {
             if (font[i] & (0x80 >> j)) {
                 screen[(y + i) * width + x + j] = color;
-            } //else screen[(y + i) * width + x + j] = back_color;
+            }
         }
     }
 }
@@ -187,6 +182,8 @@ void initVBE(multiboot_t *info) {
     c_width = width / 9;
     c_height = height / 16;
 
+    logkf("SCREEN BASS: %08x\n",screen);
+
     vbe_clear();
 
     Bmp *bmp = (Bmp*) &logo_bmp;

src/fs/iso9660.c

@@ -288,13 +288,7 @@ l9660_status l9660_read(l9660_file *f, void *buf, size_t size, size_t *read) {
 
     return L9660_OK;
 }
-char *strdup(const char *s) {
-    size_t l = strlen(s);
-    char *d = kmalloc(l + 1);
-    if (!d)
-        return NULL;
-    return memcpy(d, s, l + 1);
-}
+
 bool read_sector(l9660_fs *fs, void *buf, uint32_t sector) {
     return CDROM_Read(sector, 1, buf, fs->disk_number);
 }

src/include/common.h

@@ -32,6 +32,10 @@ typedef int bool;
 #define false 0
 #define EOF -1
 
+char* replaceAll(char* src, char* find, char* replaceWith);
+char *strstr(char *str1, char *str2);
+char *strncpy(char *dest, const char *src, unsigned long long count);
+char *strdup(const char *str);
 unsigned int rand(void);
 void srand(unsigned long seed);
 void insert_char(char* str, int pos, char ch);
@@ -59,6 +63,8 @@ int vsprintf(char *buf, const char *fmt, va_list args);
 int sprintf(char *buf, const char *fmt, ...);
 long int strtol(const char *str,char **endptr,int base);
 
+int getFindStrCount(char* src, char* find);
+
 void reset_kernel();
 void shutdown_kernel();
 uint32_t memory_all();

src/include/cpp.h

@@ -1,4 +0,0 @@
-#ifndef CRASHPOWEROS_CPP_H
-#define CRASHPOWEROS_CPP_H
-
-#endif

src/include/proc.h

@@ -1,29 +0,0 @@
-#ifndef CRASHPOWEROS_PROC_H
-#define CRASHPOWEROS_PROC_H
-
-#include "common.h"
-
-struct stackframe {
-    uint32_t 	gs;
-    uint32_t	fs;
-    uint32_t	es;
-    uint32_t	ds;
-    uint32_t	edi;
-    uint32_t	esi;
-    uint32_t	ebp;
-    uint32_t	kernel_esp;
-    uint32_t	ebx;
-    uint32_t	edx;
-    uint32_t	ecx;
-    uint32_t	eax;
-    uint32_t	retaddr;
-    uint32_t	eip;
-    uint32_t	cs;
-    uint32_t	eflags;
-    uint32_t	esp;
-    uint32_t	ss;
-};
-
-void proc_install();
-
-#endif

src/kernel/kernel.c

@@ -76,7 +76,6 @@ void kernel_main(multiboot_t *multiboot) {
 
     initVBE(multiboot);
 
-
     char* cmdline = multiboot->cmdline;
     if(cmdline != NULL){
         printf("Multiboot command line: %s\n",cmdline);

src/kernel/proc.c

@@ -1,5 +0,0 @@
-#include "../include/proc.h"
-
-void proc_install(){
-
-}

src/util/base.cpp

@@ -1,55 +0,0 @@
-#include "../include/cpp.h"
-#include <stdint.h>
-#include <stddef.h>
-
-extern "C" uint32_t kmalloc(size_t);
-extern "C" void kfree(void*);
-
-extern "C" void __cxa_pure_virtual()
-{
-    // Do nothing or print an error message.
-}
-
-void *operator
-new(size_t
-size)
-{
-return
-(void*)  kmalloc(size);
-}
-
-void *operator
-new[](
-size_t size
-)
-{
-return (void*)kmalloc(size);
-}
-
-void operator
-
-delete(void *p, unsigned int size) {
-    kfree(p);
-}
-
-void operator
-delete[](
-void *p,
-unsigned int size
-)
-{
-kfree(p);
-}
-void operator
-
-delete(void *p) {
-    kfree(p);
-}
-
-void operator
-delete[](
-void *p
-)
-{
-kfree(p);
-}

src/util/common.c

@@ -9,6 +9,42 @@ uint32_t ALIGN_F(const uint32_t addr, const uint32_t _align) {
     return (uint32_t)((addr + _align - 1) & (~(_align - 1)));
 }
 
+char *strstr(char *str1, char *str2) {
+    if (str1 == 0 || str2 == 0)return 0;
+    const char *temp = 0;
+    const char *res = 0;
+    while (*str1 != '\0') {
+        temp = str1;
+        res = str2;
+        while (*temp == *res)++temp, ++res;
+        if (*res == '\0')return str1;
+        ++str1;
+    }
+    return 0;
+}
+
+char *strncpy(char *dest, const char *src, unsigned long long count) {
+    if (dest == 0 || src == 0)return 0;
+    char *ret = dest;
+    while (count)*dest = *src, ++dest, ++src, --count;
+    return ret;
+}
+
+char *strdup(const char *str) {
+    if (str == NULL)
+        return NULL;
+
+    char *strat = (char *) str;
+    int len = 0;
+    while (*str++ != '\0')
+        len++;
+    char *ret = (char *) kmalloc(len + 1);
+
+    while ((*ret++ = *strat++) != '\0') {}
+
+    return ret - (len + 1);
+}
+
 void insert_char(char *str, int pos, char ch) {
     int i;
     for (i = strlen(str); i >= pos; i--) {
@@ -503,3 +539,90 @@ void trim(char *s) {
     while (*p && isspace(*p)) ++p, --len;
     memmove(s, p, len + 1);
 }
+
+char* replaceAll(char* src, char* find, char* replaceWith){
+    //如果find或者replace为null，则返回和src一样的字符串。
+    if(find == NULL || replaceWith == NULL){
+        return strdup(src);
+    }
+    //指向替换后的字符串的head。
+    char* afterReplaceHead = NULL;
+    //总是指向新字符串的结尾位置。
+    char* afterReplaceIndex = NULL;
+    //find字符串在src字符串中出现的次数
+    int count = 0;
+    int i,j,k;
+
+    int srcLen = strlen(src);
+    int findLen = strlen(find);
+    int replaceWithLen = strlen(replaceWith);
+
+    //指向src字符串的某个位置，从该位置开始复制子字符串到afterReplaceIndex，初始从src的head开始复制。
+    char* srcIndex = src;
+    //src字符串的某个下标，从该下标开始复制字符串到afterReplaceIndex，初始为src的第一个字符。
+    int cpStrStart = 0;
+
+    //获取find字符串在src字符串中出现的次数
+    count = getFindStrCount(src, find);
+    //如果没有出现，则返回和src一样的字符串。
+    if(count == 0){
+        return strdup(src);
+    }
+
+    //为新字符串申请内存
+    afterReplaceHead = afterReplaceIndex = (char*)kmalloc(srcLen + 1 + (replaceWithLen - findLen) * count);
+    //初始化新字符串内存
+    memset(afterReplaceHead, '\0',sizeof(afterReplaceHead));
+
+    for(i = 0,j = 0,k = 0;i!=srcLen;i++){
+        //如果find字符串的字符和src中字符串的字符是否相同。
+        if(src[i] == find[j]){
+            //如果刚开始比较，则将i的值先赋给k保存。
+            if(j == 0){
+                k = i;
+            }
+            //如果find字符串包含在src字符串中
+            if(j == (findLen-1)){
+                j = 0;
+                //拷贝src中find字符串之前的字符串到新字符串中
+                strncpy(afterReplaceIndex, srcIndex, i - findLen - cpStrStart + 1);
+                //修改afterReplaceIndex
+                afterReplaceIndex = afterReplaceIndex + i - findLen - cpStrStart + 1;
+                //修改srcIndex
+                srcIndex = srcIndex + i - findLen - cpStrStart + 1;
+                //cpStrStart
+                cpStrStart = i + 1;
+
+                //拷贝replaceWith字符串到新字符串中
+                strncpy(afterReplaceIndex, replaceWith, replaceWithLen);
+                //修改afterReplaceIndex
+                afterReplaceIndex = afterReplaceIndex + replaceWithLen;
+                //修改srcIndex
+                srcIndex = srcIndex + findLen;
+            }else{
+                j++;
+            }
+        }else{
+            //如果find和src比较过程中出现不相等的情况，则将保存的k值还给i
+            if(j != 0){
+                i = k;
+            }
+            j = 0;
+        }
+    }
+    //最后将src中最后一个与find匹配的字符串后面的字符串复制到新字符串中。
+    strncpy(afterReplaceIndex, srcIndex, i - cpStrStart);
+
+    return afterReplaceHead;
+}
+
+int getFindStrCount(char* src, char* find){
+    int count = 0;
+    char* position =src;
+    int findLen = strlen(find);
+    while((position = strstr(position, find)) != NULL){
+        count++;
+        position = position + findLen;
+    }
+    return count;
+}