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feat: WiFi驱动(ath9k) + TTF字体 + shell命令行 + FirstInit WiFi跳过

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新增: ath9k PCIe WiFi驱动(被动扫描/beacon解析), shell命令行(help/clear/echo/version/date/reboot/halt), Consolas 18px TTF字体, render_ascii.py

修改: dkm_net_api扩展scan接口, FirstInit无WiFi设备时跳过, DSK加载shell.elf, 非首次启动直接进shell
This commit is contained in:
xyou
2026-07-03 12:59:59 +08:00
parent 129175a5d8
commit 3662345434
31 changed files with 4437 additions and 240 deletions
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CODE/shell/MAKEFILE
+25
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@@ -0,0 +1,25 @@
CC := clang
LD := ld.lld
ROOT := ../..
OUT := $(ROOT)/SYSTEM/system/deshab64/shell.elf
CFLAGS := -target x86_64-unknown-none -std=c11 -ffreestanding -fno-builtin -fno-stack-protector -fpie -mno-red-zone -mno-sse -mno-sse2 -mno-mmx -msoft-float -m64 -Wall -Wextra -I../UTSM/include -O2
LDFLAGS := -nostdlib -static -pie -z max-page-size=0x1000 -T linker.ld
C_SOURCES := main.c
OBJECTS := $(C_SOURCES:.c=.o)
.PHONY: all clean
all: $(OUT)
$(OUT): $(OBJECTS) linker.ld
@if not exist "$(ROOT)\SYSTEM\system\deshab64" mkdir "$(ROOT)\SYSTEM\system\deshab64"
$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
%.o: %.c
$(CC) $(CFLAGS) -c $< -o $@
clean:
powershell -NoProfile -Command "Get-ChildItem -Path . -Recurse -Filter *.o | Remove-Item -Force; if (Test-Path '$(OUT)') { Remove-Item '$(OUT)' -Force }"
CODE/shell/linker.ld
+16
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@@ -0,0 +1,16 @@
ENTRY(dsk_entry)
PHDRS
{
text PT_LOAD FLAGS(5);
rodata PT_LOAD FLAGS(4);
data PT_LOAD FLAGS(6);
}
SECTIONS
{
. = 0x1000;
.text : ALIGN(4K) { *(.text*) } :text
.rodata : ALIGN(4K) { *(.rodata*) } :rodata
.data : ALIGN(4K) { *(.data*) *(COMMON) *(.bss*) } :data
}
CODE/shell/main.c
+631
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@@ -0,0 +1,631 @@
/* Deshab Shell — 命令行交互界面
* 接收 PS/2 键盘输入，执行内置命令。
* 显示在 framebuffer 上，使用 Consolas 18px 等宽字体。
*/
#include "../UTSM/include/utsm/dsk.h"
typedef signed char i8;
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long u64;
typedef long long i64;
#define COM1 0x3F8
static __inline__ void outb(u16 port, u8 value) { __asm__ volatile("outb %0,%1"::"a"(value),"Nd"(port)); }
static __inline__ u8 inb(u16 port) { u8 v; __asm__ volatile("inb %1,%0":"=a"(v):"Nd"(port)); return v; }
static void sputc(char c) {
for (unsigned int i=0; i<100000; i++) { if (inb(COM1+5)&0x20) break; }
outb(COM1, (unsigned char)c);
}
static void swrite(const char *s) { while(*s) { if(*s=='\n')sputc('\r'); sputc(*s++); } }
static void logl(const char *s) { swrite(s); swrite("\n"); }
/* ASCII 字体 — Consolas 18px 灰度位图（与 FirstInit 共享） */
#include "../firstInit/ascii_bitmaps.c"
#define ASCII_W 11
#define ASCII_H 18
#define ASCII_STEP 11
/* 终端尺寸 */
#define TERM_COLS 100
#define TERM_ROWS 35
#define TERM_MAX_CHARS (TERM_COLS * TERM_ROWS)
/* 颜色 — 深色主题，类似经典终端 */
#define BG_COLOR 0xFF0A1428u /* 深蓝黑 */
#define TEXT_FG 0xFFE0E8F0u /* 浅灰白 */
#define PROMPT_FG 0xFF66CCFFu /* 青色提示符 */
#define ERROR_FG 0xFFFF6680u /* 红色错误 */
#define OK_FG 0xFF66FF99u /* 绿色成功 */
#define DIM_FG 0xFF7080A0u /* 灰色注释 */
static u64 fb_a, fb_w, fb_h, fb_p;
static u32 *g_fb;
/* 终端缓冲区 — 字符 + 颜色 */
static u8 term_ch[TERM_MAX_CHARS];
static u32 term_fg[TERM_MAX_CHARS];
static int term_w = TERM_COLS;
static int term_h = TERM_ROWS;
static int cur_col = 0;
static int cur_row = 0;
static int cur_visible = 1;
/* 颜色混合 */
static u32 blend(u32 c1, u32 c2, u32 a) {
u32 na=256-a;
u32 r=((c1&0xFF)*na+(c2&0xFF)*a)>>8;
u32 g=(((c1>>8)&0xFF)*na+((c2>>8)&0xFF)*a)>>8;
u32 b=(((c1>>16)&0xFF)*na+((c2>>16)&0xFF)*a)>>8;
return 0xFF000000|(b<<16)|(g<<8)|r;
}
/* ---- 字符渲染（与 FirstInit 类似，但用纯色背景） ---- */
static void fb_char(u32 *fb, u32 ch, i64 x, i64 y, u32 fg, u32 bg) {
if (ch < ' ' || ch > '~') ch = ' ';
u32 idx = (u32)(ch - ' ');
const u8 *g = g_ascii[idx];
for (i64 r=0; r<ASCII_H; r++) {
i64 yy = y + r;
if (yy < 0 || (u64)yy >= fb_h) continue;
u32 *line = (u32 *)((u8 *)fb + (u64)yy * fb_p);
for (i64 c=0; c<ASCII_W; c++) {
u32 a = g[r * ASCII_W + c];
if (a == 0) continue;
i64 xx = x + c;
if (xx < 0 || (u64)xx >= fb_w) continue;
line[(u64)xx] = (a == 255) ? fg : blend(bg, fg, a);
}
}
}
static void fill_rect(u32 *fb, i64 x, i64 y, i64 w, i64 h, u32 color) {
for (i64 r=0; r<h; r++) {
i64 yy = y + r;
if (yy < 0 || (u64)yy >= fb_h) continue;
u32 *line = (u32 *)((u8 *)fb + (u64)yy * fb_p);
for (i64 c=0; c<w; c++) {
i64 xx = x + c;
if (xx < 0 || (u64)xx >= fb_w) continue;
line[(u64)xx] = color;
}
}
}
/* ---- 终端逻辑 ---- */
static int term_start_x, term_start_y; /* 像素坐标 */
static void term_init_pos(void) {
/* 居中布局，每字符 11px 宽，行高 20px */
int margin_x = 16;
int margin_y = 16;
term_start_x = margin_x;
term_start_y = margin_y;
/* 自适应行数/列数到 framebuffer */
int avail_w = (int)fb_w - margin_x * 2;
int avail_h = (int)fb_h - margin_y * 2;
term_w = avail_w / ASCII_STEP;
term_h = avail_h / (ASCII_H + 2);
if (term_w < 10) term_w = 10;
if (term_h < 5) term_h = 5;
if (term_w > TERM_COLS) term_w = TERM_COLS;
if (term_h > TERM_ROWS) term_h = TERM_ROWS;
}
static void term_clear(void) {
for (int i = 0; i < TERM_MAX_CHARS; i++) {
term_ch[i] = ' ';
term_fg[i] = TEXT_FG;
}
cur_col = 0;
cur_row = 0;
}
static void term_scroll(void) {
/* 向上滚动一行 */
for (int r = 1; r < term_h; r++) {
for (int c = 0; c < term_w; c++) {
int src = r * TERM_COLS + c;
int dst = (r-1) * TERM_COLS + c;
term_ch[dst] = term_ch[src];
term_fg[dst] = term_fg[src];
}
}
/* 清空最后一行 */
for (int c = 0; c < term_w; c++) {
term_ch[(term_h-1) * TERM_COLS + c] = ' ';
term_fg[(term_h-1) * TERM_COLS + c] = TEXT_FG;
}
cur_row = term_h - 1;
cur_col = 0;
}
static void term_newline(void) {
cur_col = 0;
cur_row++;
if (cur_row >= term_h) term_scroll();
}
static void term_putc_color(char c, u32 color) {
if (c == '\n') { term_newline(); return; }
if (c == '\r') { cur_col = 0; return; }
if (c == '\t') {
int spaces = 4 - (cur_col % 4);
for (int i = 0; i < spaces; i++) term_putc_color(' ', color);
return;
}
if (c < ' ' || c > '~') c = '?';
if (cur_col >= term_w) term_newline();
int idx = cur_row * TERM_COLS + cur_col;
term_ch[idx] = (u8)c;
term_fg[idx] = color;
cur_col++;
}
static void term_putc(char c) { term_putc_color(c, TEXT_FG); }
static void term_puts_color(const char *s, u32 color) {
while (*s) term_putc_color(*s++, color);
}
static void term_puts(const char *s) { term_puts_color(s, TEXT_FG); }
static void term_redraw_all(void) {
/* 清屏背景 */
fill_rect(g_fb, 0, 0, (i64)fb_w, (i64)fb_h, BG_COLOR);
/* 渲染所有字符 */
for (int r = 0; r < term_h; r++) {
for (int c = 0; c < term_w; c++) {
int idx = r * TERM_COLS + c;
u8 ch = term_ch[idx];
if (ch == ' ') continue;
i64 x = term_start_x + (i64)c * ASCII_STEP;
i64 y = term_start_y + (i64)r * (ASCII_H + 2);
fb_char(g_fb, ch, x, y, term_fg[idx], BG_COLOR);
}
}
/* 渲染光标 */
if (cur_visible && cur_col < term_w && cur_row < term_h) {
i64 x = term_start_x + (i64)cur_col * ASCII_STEP;
i64 y = term_start_y + (i64)cur_row * (ASCII_H + 2);
fill_rect(g_fb, x, y + ASCII_H - 3, ASCII_W, 2, TEXT_FG);
}
}
static void term_redraw_cursor(void) {
if (cur_visible && cur_col < term_w && cur_row < term_h) {
i64 x = term_start_x + (i64)cur_col * ASCII_STEP;
i64 y = term_start_y + (i64)cur_row * (ASCII_H + 2);
fill_rect(g_fb, x, y + ASCII_H - 3, ASCII_W, 2, TEXT_FG);
}
}
static void term_clear_cursor(void) {
if (cur_col < term_w && cur_row < term_h) {
i64 x = term_start_x + (i64)cur_col * ASCII_STEP;
i64 y = term_start_y + (i64)cur_row * (ASCII_H + 2);
fill_rect(g_fb, x, y + ASCII_H - 3, ASCII_W, 2, BG_COLOR);
}
}
/* ---- 输入缓冲 ---- */
static char input_buf[256];
static int input_len = 0;
static int input_cursor = 0; /* 在 input_buf 中的位置（支持左右移动） */
/* ---- 键盘扫描码 → ASCII（Set 1，与 FirstInit 共享逻辑） ---- */
static char scan_to_ascii(u8 sc, int shift) {
static const char normal[58] = {
0, 27, '1','2','3','4','5','6','7','8','9','0','-','=', 8, '\t',
'q','w','e','r','t','y','u','i','o','p','[',']','\n',0,
'a','s','d','f','g','h','j','k','l',';','\'', '`',0,'\\',
'z','x','c','v','b','n','m',',','.','/',0,'*',0,' '
};
static const char shifted[58] = {
0, 27, '!','@','#','$','%','^','&','*','(',')','_','+', 8, '\t',
'Q','W','E','R','T','Y','U','I','O','P','{','}','\n',0,
'A','S','D','F','G','H','J','K','L',':','"','~',0,'|',
'Z','X','C','V','B','N','M','<','>','?',0,'*',0,' '
};
if (sc >= 58) return 0;
return shift ? shifted[sc] : normal[sc];
}
/* ---- 内置命令 ---- */
static int str_eq(const char *a, const char *b) {
while (*a && *b) { if (*a != *b) return 0; a++; b++; }
return *a == *b;
}
static void cmd_help(void) {
term_puts_color("Deshab Shell — 内置命令列表:\n", PROMPT_FG);
term_puts(" help 显示此帮助\n");
term_puts(" clear 清屏\n");
term_puts(" echo <text> 显示文本\n");
term_puts(" version 显示系统版本\n");
term_puts(" uname 显示系统名称\n");
term_puts(" date 显示当前日期\n");
term_puts(" ver 显示内核版本（同 version）\n");
term_puts(" about 关于 Deshab\n");
term_puts(" reboot 重启系统\n");
term_puts(" halt 关机（停止 CPU）\n");
term_puts(" ls 列出根目录文件（暂未实现，需要 VFS）\n");
term_puts(" pci 列出 PCI 设备（暂未实现）\n");
}
static void cmd_version(void) {
term_puts_color("Deshab OS v0.1.0\n", OK_FG);
term_puts(" Kernel: DSK (Deshab System Kernel)\n");
term_puts(" Architecture: x86_64\n");
term_puts(" ABI: DKM (Deshab Kernel Module) v1\n");
term_puts(" Bootloader: Limine\n");
}
static void cmd_uname(void) {
term_puts("Deshab\n");
}
static void cmd_about(void) {
term_puts_color("=== Deshab OS ===\n", PROMPT_FG);
term_puts("单地址空间 Ring0 内核实验系统\n");
term_puts("架构: UTSM + DSK + DKM 驱动模型\n");
term_puts_color("Built with Clang + lld\n", DIM_FG);
term_puts_color("© 2026 Deshab Project\n", DIM_FG);
}
static void cmd_clear(void) {
term_clear();
}
static void cmd_reboot(void) {
term_puts_color("Rebooting...\n", PROMPT_FG);
term_redraw_all();
/* ACPI 重启：写 0x64 = 0xFE 触发键盘控制器复位 */
outb(0x64, 0xFE);
/* 备用：三重故障 */
__asm__ volatile("int $0x03");
for(;;) __asm__("hlt");
}
static void cmd_halt(void) {
term_puts_color("System halted.\n", PROMPT_FG);
term_redraw_all();
for(;;) __asm__("hlt");
}
static void cmd_echo(const char *args) {
if (args && *args) term_puts_color(args, TEXT_FG);
term_putc('\n');
}
/* 前向声明 — CMOS RTC 读取 */
static u8 read_rtc_reg(u8 reg);
static u8 bcd_to_bin_impl(u8 bcd);
static void cmd_date(void) {
/* 通过 CMOS RTC 读取日期 */
u8 year = bcd_to_bin_impl(read_rtc_reg(9));
u8 month = bcd_to_bin_impl(read_rtc_reg(8));
u8 day = bcd_to_bin_impl(read_rtc_reg(7));
u8 hour = bcd_to_bin_impl(read_rtc_reg(4));
u8 minute = bcd_to_bin_impl(read_rtc_reg(2));
u8 second = bcd_to_bin_impl(read_rtc_reg(0));
/* 简单打印 */
char buf[32];
int p = 0;
/* YYYY-MM-DD HH:MM:SS */
buf[p++] = '2'; buf[p++] = '0';
buf[p++] = '0' + year / 10; buf[p++] = '0' + year % 10;
buf[p++] = '-';
buf[p++] = '0' + month / 10; buf[p++] = '0' + month % 10;
buf[p++] = '-';
buf[p++] = '0' + day / 10; buf[p++] = '0' + day % 10;
buf[p++] = ' ';
buf[p++] = '0' + hour / 10; buf[p++] = '0' + hour % 10;
buf[p++] = ':';
buf[p++] = '0' + minute / 10; buf[p++] = '0' + minute % 10;
buf[p++] = ':';
buf[p++] = '0' + second / 10; buf[p++] = '0' + second % 10;
buf[p] = 0;
term_puts(buf);
term_putc('\n');
}
static void cmd_unknown(const char *cmd) {
term_puts_color("未知命令: ", ERROR_FG);
term_puts_color(cmd, ERROR_FG);
term_putc('\n');
term_puts_color("输入 'help' 查看可用命令\n", DIM_FG);
}
static void cmd_not_impl(const char *cmd) {
term_puts_color(cmd, ERROR_FG);
term_puts_color(": 此命令尚未实现\n", ERROR_FG);
}
static void execute_command(const char *cmd) {
/* 跳过前导空格 */
while (*cmd == ' ') cmd++;
if (*cmd == 0) return;
/* 找命令名（第一个单词） */
const char *args = cmd;
while (*args && *args != ' ') args++;
int cmd_name_len = (int)(args - cmd);
/* 复制命令名到本地缓冲 */
char name[32];
if (cmd_name_len >= 32) cmd_name_len = 31;
for (int i = 0; i < cmd_name_len; i++) name[i] = cmd[i];
name[cmd_name_len] = 0;
/* 跳过参数前的空格 */
while (*args == ' ') args++;
/* 分派 */
if (str_eq(name, "help") || str_eq(name, "?")) cmd_help();
else if (str_eq(name, "version") || str_eq(name, "ver")) cmd_version();
else if (str_eq(name, "uname")) cmd_uname();
else if (str_eq(name, "about")) cmd_about();
else if (str_eq(name, "clear") || str_eq(name, "cls")) cmd_clear();
else if (str_eq(name, "reboot")) cmd_reboot();
else if (str_eq(name, "halt") || str_eq(name, "shutdown")) cmd_halt();
else if (str_eq(name, "echo")) cmd_echo(args);
else if (str_eq(name, "date") || str_eq(name, "time")) cmd_date();
else if (str_eq(name, "ls") || str_eq(name, "dir")) cmd_not_impl("ls");
else if (str_eq(name, "pci")) cmd_not_impl("pci");
else if (str_eq(name, "cat")) cmd_not_impl("cat");
else if (str_eq(name, "cd")) cmd_not_impl("cd");
else if (str_eq(name, "pwd")) { term_puts("/\n"); }
else if (str_eq(name, "whoami")) { term_puts("root\n"); }
else if (str_eq(name, "id")) { term_puts("uid=0(root) gid=0(root)\n"); }
else cmd_unknown(name);
}
/* ---- CMOS RTC 读取 ---- */
static u8 read_rtc_reg(u8 reg) {
outb(0x70, reg);
return inb(0x71);
}
static u8 bcd_to_bin_impl(u8 bcd) {
return (u8)((bcd >> 4) * 10 + (bcd & 0x0F));
}
/* ---- 提示符 ---- */
static const char *PROMPT = "deshab# ";
static void draw_prompt(void) {
term_puts_color(PROMPT, PROMPT_FG);
}
/* ---- 输入行编辑 ---- */
static void redraw_input_line(void) {
/* 清除当前行从提示符开始的部分并重绘 */
int prompt_len = 0;
while (PROMPT[prompt_len]) prompt_len++;
/* 清除整行 */
i64 y = term_start_y + (i64)cur_row * (ASCII_H + 2);
fill_rect(g_fb, term_start_x, y, (i64)term_w * ASCII_STEP, ASCII_H, BG_COLOR);
/* 重绘提示符 */
for (int i = 0; i < prompt_len; i++) {
i64 x = term_start_x + (i64)i * ASCII_STEP;
fb_char(g_fb, PROMPT[i], x, y, PROMPT_FG, BG_COLOR);
}
/* 重绘输入缓冲 */
for (int i = 0; i < input_len; i++) {
i64 x = term_start_x + (i64)(prompt_len + i) * ASCII_STEP;
fb_char(g_fb, input_buf[i], x, y, TEXT_FG, BG_COLOR);
}
/* 同步 cur_col 到输入光标 */
cur_col = prompt_len + input_cursor;
term_redraw_cursor();
}
static void insert_char(char c) {
if (input_len >= 255) return;
/* 在 input_cursor 处插入 */
for (int i = input_len; i > input_cursor; i--) {
input_buf[i] = input_buf[i-1];
}
input_buf[input_cursor] = c;
input_len++;
input_cursor++;
redraw_input_line();
}
static void delete_char_back(void) {
if (input_cursor == 0) return;
/* 删除 input_cursor-1 处的字符 */
for (int i = input_cursor - 1; i < input_len - 1; i++) {
input_buf[i] = input_buf[i+1];
}
input_len--;
input_cursor--;
input_buf[input_len] = 0;
redraw_input_line();
}
static void delete_char_fwd(void) {
if (input_cursor >= input_len) return;
for (int i = input_cursor; i < input_len - 1; i++) {
input_buf[i] = input_buf[i+1];
}
input_len--;
input_buf[input_len] = 0;
redraw_input_line();
}
static void cursor_left(void) {
if (input_cursor > 0) {
input_cursor--;
term_clear_cursor();
cur_col--;
if (cur_col < 0) { cur_col = term_w - 1; cur_row--; }
term_redraw_cursor();
}
}
static void cursor_right(void) {
if (input_cursor < input_len) {
input_cursor++;
term_clear_cursor();
cur_col++;
if (cur_col >= term_w) { cur_col = 0; cur_row++; }
term_redraw_cursor();
}
}
static void cursor_home(void) {
term_clear_cursor();
int prompt_len = 0;
while (PROMPT[prompt_len]) prompt_len++;
cur_col = prompt_len;
input_cursor = 0;
term_redraw_cursor();
}
static void cursor_end(void) {
term_clear_cursor();
int prompt_len = 0;
while (PROMPT[prompt_len]) prompt_len++;
cur_col = prompt_len + input_len;
input_cursor = input_len;
term_redraw_cursor();
}
static void kill_to_end(void) {
input_len = input_cursor;
input_buf[input_len] = 0;
redraw_input_line();
}
static void kill_line(void) {
input_len = 0;
input_cursor = 0;
input_buf[0] = 0;
redraw_input_line();
}
/* ---- 主入口 ---- */
__attribute__((visibility("default")))
void dsk_entry(const dsk_boot_context *ctx) {
__asm__ volatile("cli");
logl("[shell] boot");
if (!ctx || ctx->magic != 0x44534B31424F4F54ULL) {
logl("[shell] bad context");
for(;;) __asm__("hlt");
}
fb_a = ctx->framebuffer_address;
fb_w = ctx->framebuffer_width;
fb_h = ctx->framebuffer_height;
fb_p = ctx->framebuffer_pitch;
g_fb = (u32 *)(u64)fb_a;
term_init_pos();
term_clear();
term_redraw_all();
/* 启动 banner */
term_puts_color("=== Deshab OS v0.1.0 ===\n", PROMPT_FG);
term_puts_color("欢迎使用 Deshab Shell\n", OK_FG);
term_puts_color("输入 'help' 查看可用命令\n", DIM_FG);
term_putc('\n');
/* 主循环 */
int shift = 0;
int e0 = 0;
for (;;) {
draw_prompt();
input_len = 0;
input_cursor = 0;
input_buf[0] = 0;
int prompt_len = 0;
while (PROMPT[prompt_len]) prompt_len++;
cur_col = prompt_len;
term_redraw_cursor();
/* 等待命令输入 */
int cmd_done = 0;
while (!cmd_done) {
u8 st = inb(0x64);
if (!(st & 1)) { __asm__("pause"); continue; }
u8 data = inb(0x60);
/* 忽略鼠标数据（AUX 位） */
if (st & 0x20) continue;
u8 sc = data;
if (sc == 0xE0) { e0 = 1; continue; }
if (sc == 0x2A || sc == 0x36) { shift = 1; continue; }
if (sc == 0xAA || sc == 0xB6) { shift = 0; continue; }
if (sc & 0x80) {
/* 松开事件 — 仅处理扩展键 */
if (e0 && sc == 0x9C) { e0 = 0; } /* Enter 释放 */
else if (e0 && sc == 0xCB) { e0 = 0; } /* Left 释放 */
else if (e0 && sc == 0xCD) { e0 = 0; } /* Right 释放 */
else if (e0 && sc == 0xC8) { e0 = 0; } /* Up 释放 */
else if (e0 && sc == 0xD0) { e0 = 0; } /* Down 释放 */
else if (e0 && sc == 0xD3) { e0 = 0; } /* Delete 释放 */
else if (e0 && sc == 0xC7) { e0 = 0; } /* Home 释放 */
else if (e0 && sc == 0xCF) { e0 = 0; } /* End 释放 */
e0 = 0;
continue;
}
/* 按下事件 */
if (e0) {
/* 扩展键 */
if (sc == 0x4B) cursor_left(); /* Left */
else if (sc == 0x4D) cursor_right(); /* Right */
else if (sc == 0x47) cursor_home(); /* Home */
else if (sc == 0x4F) cursor_end(); /* End */
else if (sc == 0x53) delete_char_fwd(); /* Delete */
else if (sc == 0x48) { /* Up — 命令历史暂未实现 */ }
else if (sc == 0x50) { /* Down — 命令历史暂未实现 */ }
e0 = 0;
continue;
}
/* 控制键 */
if (sc == 0x1C) {
/* Enter — 执行命令 */
term_clear_cursor();
input_buf[input_len] = 0;
term_putc('\n');
execute_command(input_buf);
cmd_done = 1;
continue;
}
if (sc == 0x0E) {
/* Backspace */
delete_char_back();
continue;
}
if (sc == 0x01) {
/* Esc — 清行 */
kill_line();
continue;
}
/* Ctrl+U (kill line) */
if (sc == 0x15 && !shift) {
kill_line();
continue;
}
if (sc == 0x17 && !shift) {
/* Ctrl+W — 删除到行首 */
while (input_cursor > 0) delete_char_back();
continue;
}
if (sc == 0x0B && !shift) {
/* Ctrl+K — 删除到行尾 */
kill_to_end();
continue;
}
/* 普通字符 */
char c = scan_to_ascii(sc, shift);
if (c && c >= 32 && c <= 126) {
insert_char(c);
}
}
}
}
CODE/shell/main.o
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