/* Deshab Shell — 命令行交互界面 * 接收 PS/2 键盘输入，执行内置命令。 * 使用 Deshab "Sealed Arc" 视觉风格系统。 */ #include "../UTSM/include/utsm/dsk.h" #include "../UTSM/include/utsm/pe.h" #include "../UTSM/include/utsm/linux_compat.h" 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 __inline__ void outl(u16 port, u32 value) { __asm__ volatile("outl %0,%1"::"a"(value),"Nd"(port)); } static __inline__ u32 inl(u16 port) { u32 v; __asm__ volatile("inl %1,%0":"=a"(v):"Nd"(port)); return v; } /* ---- TSC-based timing (实机要求: 用 CPU 频率计算, 不用循环) ---- */ static u64 g_tsc_per_ms = 0; static __inline__ u64 rdtsc_shell(void) { u32 lo, hi; __asm__ volatile("rdtsc" : "=a"(lo), "=d"(hi)); return ((u64)hi << 32) | lo; } /* 通过 PIT ch0 (16-bit mode 0) 校准 TSC ~10ms 计数 */ static void tsc_calibrate_shell(void) { outb(0x43, 0x30); /* ch0, lo+hi, mode 0, binary */ outb(0x40, 0x7c); /* 11932 low = ~10ms */ outb(0x40, 0x2e); /* 11932 high */ u64 tsc_start = rdtsc_shell(); u16 prev = 0; u64 loops = 0; for (;;) { outb(0x43, 0x00); u16 cur = (u16)inb(0x40) | ((u16)inb(0x40) << 8); if (cur > prev && loops > 10) break; prev = cur; loops++; } u64 tsc_end = rdtsc_shell(); g_tsc_per_ms = (tsc_end - tsc_start) / 10; } /* 串口发送等待: TSC 100us 超时, 校准失败时回退到循环 */ static void serial_wait_tx_shell(void) { if (g_tsc_per_ms == 0) { tsc_calibrate_shell(); } if (g_tsc_per_ms == 0) { for (u32 i = 0; i < 100000; i++) { if (inb(COM1 + 5) & 0x20) break; } return; } u64 deadline = rdtsc_shell() + g_tsc_per_ms / 10; /* 100us 超时 */ while (rdtsc_shell() < deadline) { if (inb(COM1 + 5) & 0x20) break; __asm__ volatile("pause"); } } static void sputc(char c) { serial_wait_tx_shell(); 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 — 必须在 deshab_ui.h 之前包含，因为 du_draw_char 引用 g_ascii */ #include "../firstInit/ascii_bitmaps.c" #include "../UTSM/include/utsm/deshab_ui.h" /* ============================================================ * Block 设备 + FAT32 读写（移植自 DSK，支持 cp/mv/cat/ls） * ============================================================ */ typedef int (*shell_block_read_fn)(u32 index, u64 lba, u32 count, void *buf); typedef int (*shell_block_write_fn)(u32 index, u64 lba, u32 count, const void *buf); static shell_block_read_fn g_block_read; static shell_block_write_fn g_block_write; /* FAT32 BPB / 目录项结构（与 DSK 一致，packed） */ typedef struct __attribute__((packed)) { u8 jmp[3]; char oem[8]; u16 bps; u8 spc; u16 rsvd; u8 fc; u16 root_ent; u16 ts16; u8 media; u16 spf16; u16 spt; u16 heads; u32 hidden; u32 ts32; u32 spf; u16 flags; u16 ver; u32 root_clus; u16 fsi; u16 bkboot; u8 res[12]; u8 drv; u8 ntfl; u8 sig; u32 ser; char lbl[11]; char typ[8]; u8 code[420]; u16 boot_sig; } shell_fat32_bpb; typedef struct __attribute__((packed)) { char name[11]; u8 attr; u8 ntr; u8 ctenth; u16 ctime; u16 cdate; u16 adate; u16 chigh; u16 wtime; u16 wdate; u16 clow; u32 fsize; } shell_fat32_de; static u32 sh_r32(const u8 *p) { return (u32)p[0]|((u32)p[1]<<8)|((u32)p[2]<<16)|((u32)p[3]<<24); } static u16 sh_r16(const u8 *p) { return (u16)p[0]|((u16)p[1]<<8); } static int sh_neq11(const char *a, const char *b) { for(int i=0;i<11;i++) if(a[i]!=b[i]) return 0; return 1; } /* 批量读写缓冲区（与 DSK 对齐：256 扇区覆盖 BPB+FAT+根目录+小文件） */ static u8 g_disk[131072]; /* 256 扇区 BPB+FAT+根目录缓存 */ static u8 g_cluster[4096]; /* 单簇缓冲 */ static u8 g_fdata[262144]; /* 文件数据缓冲（最大 256KB） */ static int g_disk_loaded = 0; /* g_disk 是否已加载 BPB+FAT */ static int sh_read_sectors(u32 lba, u32 count, u8 *out) { return g_block_read ? g_block_read(0,lba,count,out) : -1; } static int sh_write_sectors(u32 lba, u32 count, const u8 *buf) { return g_block_write ? g_block_write(0,lba,count,buf) : -1; } /* 确保 g_disk 已加载 BPB+FAT+根目录（256 扇区） */ static int sh_disk_load(void) { if (g_disk_loaded) return 0; if (sh_read_sectors(0, 256, g_disk) != 0) return -1; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; if (bpb->boot_sig != 0xAA55 || bpb->bps != 512) return -2; if (bpb->spf == 0 || bpb->root_clus < 2) return -3; g_disk_loaded = 1; return 0; } /* 把 "file.txt" / "NAME" 转为 11 字符 8.3 名（大写，空格填充） * 返回 0 成功，-1 失败（过长或非法字符） */ static int name_to_83(const char *in, char out[11]) { for (int i = 0; i < 11; i++) out[i] = ' '; int inlen = 0; while (in[inlen] && inlen < 13) inlen++; if (inlen == 0 || inlen > 12) return -1; int dot = -1; for (int i = 0; i < inlen; i++) if (in[i] == '.') dot = i; int base_end = (dot >= 0) ? dot : inlen; if (base_end == 0 || base_end > 8) return -1; for (int j = 0; j < base_end; j++) { char c = in[j]; if (c >= 'a' && c <= 'z') c -= 32; if (c == '.' || c == ' ' || c == '/' || c == '\\') return -1; out[j] = c; } if (dot >= 0) { int extlen = inlen - dot - 1; if (extlen > 3) return -1; for (int j = 0; j < extlen; j++) { char c = in[dot + 1 + j]; if (c >= 'a' && c <= 'z') c -= 32; if (c == '.' || c == ' ' || c == '/' || c == '\\') return -1; out[8 + j] = c; } } return 0; } /* 把 11 字符 8.3 名转为可显示字符串（如 "README.TXT"） */ static void name_from_83(const char in[11], char out[13]) { int p = 0; for (int j = 0; j < 8; j++) { if (in[j] == ' ') break; out[p++] = in[j]; } if (in[8] != ' ') { out[p++] = '.'; for (int j = 8; j < 11; j++) { if (in[j] == ' ') break; out[p++] = in[j]; } } out[p] = 0; } /* 在根目录簇链中查找 11 字符名，输出首簇号与文件大小 */ static int fat32_find_in_root(const u8 *clus, u32 clus_sectors, const char *target, u32 *out_clus, u32 *out_size, u32 *out_idx) { const shell_fat32_de *dir = (const shell_fat32_de *)clus; for (u32 e = 0; e * 32 < clus_sectors * 512; e++) { if (dir[e].name[0] == 0) break; if ((u8)dir[e].name[0] == 0xE5) continue; if (dir[e].attr == 0x0F) continue; if (dir[e].attr & 0x08) continue; if (sh_neq11(dir[e].name, target)) { *out_clus = (u32)sh_r16((const u8*)&dir[e].clow) | ((u32)sh_r16((const u8*)&dir[e].chigh) << 16); *out_size = dir[e].fsize; if (out_idx) *out_idx = e; return 0; } } return -1; } /* 在目录簇链中查找名为 name11 的子目录（attr & 0x10），返回首簇号。 * dir_clus: 目录起始簇号。返回 0 成功，-1 未找到。 */ static int fat32_find_dir(u32 dir_clus, const char *name11, u32 *out_clus) { if (sh_disk_load() != 0) return -2; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; u32 data_lba = bpb->rsvd + (u32)bpb->fc * bpb->spf; u32 fat_byte_off = bpb->rsvd * 512; u32 spc = bpb->spc; u32 clus = dir_clus; while (clus >= 2 && clus < 0x0FFFFFF8) { u32 lba = data_lba + (clus - 2) * spc; const u8 *cb; if ((u64)lba * 512 + (u64)spc * 512 <= 256ULL * 512) cb = g_disk + (u64)lba * 512; else { if (sh_read_sectors(lba, 8, g_cluster) != 0) return -4; cb = g_cluster; } const shell_fat32_de *dir = (const shell_fat32_de *)cb; for (u32 e = 0; e * 32 < spc * 512; e++) { if (dir[e].name[0] == 0) goto done_dir; if ((u8)dir[e].name[0] == 0xE5) continue; if (dir[e].attr == 0x0F) continue; if (dir[e].attr & 0x08) continue; if (!(dir[e].attr & 0x10)) continue; /* 只匹配目录 */ if (sh_neq11(dir[e].name, name11)) { *out_clus = (u32)sh_r16((const u8*)&dir[e].clow) | ((u32)sh_r16((const u8*)&dir[e].chigh) << 16); return 0; } } u32 fo = fat_byte_off + clus * 4; if (fo + 4 > sizeof(g_disk)) break; clus = sh_r32(g_disk + fo) & 0x0FFFFFFF; } done_dir: return -1; } /* 从指定目录首簇读取文件到 g_fdata。 * dir_clus: 目录起始簇号。name11: 8.3 名。 * 返回 0 成功，*out_data 指向 g_fdata，*out_size 为字节数；非 0 失败。 */ static int fat32_read_file_in_dir(u32 dir_clus, const char *name11, u8 **out_data, u32 *out_size) { if (sh_disk_load() != 0) return -1; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; u32 data_lba = bpb->rsvd + (u32)bpb->fc * bpb->spf; u32 fat_byte_off = bpb->rsvd * 512; u32 spc = bpb->spc; u32 clus = dir_clus; u32 found_clus = 0, found_size = 0; int found = 0; while (clus >= 2 && clus < 0x0FFFFFF8 && !found) { u32 lba = data_lba + (clus - 2) * spc; const u8 *cb; if ((u64)lba * 512 + (u64)spc * 512 <= 256ULL * 512) cb = g_disk + (u64)lba * 512; else { if (sh_read_sectors(lba, 8, g_cluster) != 0) return -4; cb = g_cluster; } if (fat32_find_in_root(cb, spc, name11, &found_clus, &found_size, 0) == 0) { found = 1; break; } u32 fo = fat_byte_off + clus * 4; if (fo + 4 > sizeof(g_disk)) break; clus = sh_r32(g_disk + fo) & 0x0FFFFFFF; } if (!found) return -5; if (found_size > sizeof(g_fdata)) return -6; u8 *dst = g_fdata; u32 remaining = found_size; u32 fc = found_clus; while (fc >= 2 && fc < 0x0FFFFFF8 && remaining > 0) { u32 fc_lba = data_lba + (fc - 2) * spc; u32 fc_bytes = spc * 512; if (fc_bytes > remaining) fc_bytes = remaining; const u8 *fb; if ((u64)fc_lba * 512 + (u64)spc * 512 <= 256ULL * 512) fb = g_disk + (u64)fc_lba * 512; else { if (sh_read_sectors(fc_lba, 8, g_cluster) != 0) return -7; fb = g_cluster; } for (u32 b = 0; b < fc_bytes; b++) dst[b] = fb[b]; dst += fc_bytes; remaining -= fc_bytes; u32 fo = fat_byte_off + fc * 4; if (fo + 4 > sizeof(g_disk)) break; fc = sh_r32(g_disk + fo) & 0x0FFFFFFF; } *out_data = g_fdata; *out_size = found_size; return 0; } /* 读取根目录下指定 8.3 名文件到 g_fdata。 * 返回 0 成功，*out_data 指向 g_fdata，*out_size 为字节数；非 0 失败。 */ static int fat32_read_root_file(const char *name11, u8 **out_data, u32 *out_size) { if (sh_disk_load() != 0) return -1; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; return fat32_read_file_in_dir(bpb->root_clus, name11, out_data, out_size); } /* /bin 目录首簇号缓存 */ static u32 g_bin_clus = 0; static int g_bin_checked = 0; /* 获取 /bin 目录首簇号。返回 0 成功，-1 未找到。 */ static int get_bin_cluster(u32 *out_clus) { if (g_bin_checked) { if (g_bin_clus == 0) return -1; *out_clus = g_bin_clus; return 0; } g_bin_checked = 1; if (sh_disk_load() != 0) { g_bin_clus = 0; return -1; } const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; char bin83[11] = {'B','I','N',' ',' ',' ',' ',' ',' ',' ',' '}; if (fat32_find_dir(bpb->root_clus, bin83, &g_bin_clus) != 0) { g_bin_clus = 0; return -1; } *out_clus = g_bin_clus; return 0; } /* 写入根目录下指定 8.3 名文件（存在则替换，不存在则新建）。 * 依赖 g_disk 已加载 BPB+FAT。返回 0 成功。 */ static int fat32_write_root_file(const char *name11, const u8 *data, u32 size) { if (sh_disk_load() != 0) return -1; /* 写入前重新加载 BPB+FAT，保证与盘上一致 */ if (sh_read_sectors(0, 256, g_disk) != 0) return -2; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; u32 spc = bpb->spc; u32 fat_lba = bpb->rsvd; u32 fat_sectors = bpb->spf; u32 data_lba = bpb->rsvd + (u32)bpb->fc * bpb->spf; u32 fat_byte_off = bpb->rsvd * 512; u32 root_clus = bpb->root_clus; u32 cluster_bytes = spc * 512; u32 root_lba = data_lba + (root_clus - 2) * spc; u8 *root_buf = g_disk + (u64)root_lba * 512; u32 max_entries = cluster_bytes / 32; shell_fat32_de *dir = (shell_fat32_de *)root_buf; int free_entry = -1; u32 existing_clus = 0; int found = 0; u32 existing_idx = 0; for (u32 e = 0; e < max_entries; e++) { if (dir[e].name[0] == 0) { if (free_entry < 0) free_entry = (int)e; break; } if ((u8)dir[e].name[0] == 0xE5) { if (free_entry < 0) free_entry = (int)e; continue; } if (dir[e].attr == 0x0F) continue; if (dir[e].attr & 0x08) continue; if (sh_neq11(dir[e].name, name11)) { existing_clus = (u32)sh_r16((const u8*)&dir[e].clow) | ((u32)sh_r16((const u8*)&dir[e].chigh) << 16); found = 1; existing_idx = e; if (free_entry < 0) free_entry = (int)e; break; } } u32 bytes_needed = size > 0 ? size : 1; u32 clusters_needed = (bytes_needed + cluster_bytes - 1) / cluster_bytes; u32 first_clus = 0; u32 prev_clus = 0; if (found && existing_clus >= 2) { first_clus = existing_clus; u32 cur = existing_clus; u32 count = 0; while (cur >= 2 && cur < 0x0FFFFFF8 && count < clusters_needed) { prev_clus = cur; u32 fo = fat_byte_off + cur * 4; if (fo + 4 > sizeof(g_disk)) break; cur = sh_r32(g_disk + fo) & 0x0FFFFFFF; count++; } while (count < clusters_needed) { u32 newc = 0; for (u32 c = 2; c < (fat_sectors * 512) / 4; c++) { u32 fo = fat_byte_off + c * 4; if (fo + 4 > sizeof(g_disk)) break; if ((sh_r32(g_disk + fo) & 0x0FFFFFFF) == 0) { newc = c; break; } } if (newc == 0) return -3; u32 pfo = fat_byte_off + prev_clus * 4; if (pfo + 4 <= sizeof(g_disk)) { g_disk[pfo] = (u8)(newc & 0xFF); g_disk[pfo+1] = (u8)((newc >> 8) & 0xFF); g_disk[pfo+2] = (u8)((newc >> 16) & 0xFF); g_disk[pfo+3] = (u8)((newc >> 24) & 0x0F); } prev_clus = newc; count++; } if (prev_clus >= 2) { u32 fo = fat_byte_off + prev_clus * 4; if (fo + 4 <= sizeof(g_disk)) { g_disk[fo] = 0xF8; g_disk[fo+1] = 0xFF; g_disk[fo+2] = 0xFF; g_disk[fo+3] = 0x0F; } } /* 释放多余旧簇 */ u32 next = 0; u32 fo = fat_byte_off + prev_clus * 4; if (fo + 4 <= sizeof(g_disk)) next = sh_r32(g_disk + fo) & 0x0FFFFFFF; while (next >= 2 && next < 0x0FFFFFF8) { u32 nfo = fat_byte_off + next * 4; u32 nn = 0; if (nfo + 4 <= sizeof(g_disk)) nn = sh_r32(g_disk + nfo) & 0x0FFFFFFF; g_disk[nfo] = 0; g_disk[nfo+1] = 0; g_disk[nfo+2] = 0; g_disk[nfo+3] = 0; next = nn; } } else { if (free_entry < 0) return -4; for (u32 i = 0; i < clusters_needed; i++) { u32 newc = 0; for (u32 c = 2; c < (fat_sectors * 512) / 4; c++) { u32 fo = fat_byte_off + c * 4; if (fo + 4 > sizeof(g_disk)) break; if ((sh_r32(g_disk + fo) & 0x0FFFFFFF) == 0) { newc = c; break; } } if (newc == 0) return -3; if (i == 0) first_clus = newc; if (prev_clus >= 2) { u32 pfo = fat_byte_off + prev_clus * 4; g_disk[pfo] = (u8)(newc & 0xFF); g_disk[pfo+1] = (u8)((newc >> 8) & 0xFF); g_disk[pfo+2] = (u8)((newc >> 16) & 0xFF); g_disk[pfo+3] = (u8)((newc >> 24) & 0x0F); } prev_clus = newc; } if (prev_clus >= 2) { u32 fo = fat_byte_off + prev_clus * 4; g_disk[fo] = 0xF8; g_disk[fo+1] = 0xFF; g_disk[fo+2] = 0xFF; g_disk[fo+3] = 0x0F; } } /* 写数据到簇 */ u32 remaining = size; const u8 *src = data; u32 cur = first_clus; u32 ci = 0; while (cur >= 2 && cur < 0x0FFFFFF8 && ci < clusters_needed) { u32 clba = data_lba + (cur - 2) * spc; u32 chunk = remaining < cluster_bytes ? remaining : cluster_bytes; if ((u64)clba * 512 + cluster_bytes <= 256ULL * 512) { u8 *dst = g_disk + (u64)clba * 512; for (u32 b = 0; b < chunk; b++) dst[b] = src[b]; for (u32 b = chunk; b < cluster_bytes; b++) dst[b] = 0; } else { if (sh_read_sectors(clba, spc, g_cluster) != 0) return -5; for (u32 b = 0; b < chunk; b++) g_cluster[b] = src[b]; for (u32 b = chunk; b < cluster_bytes; b++) g_cluster[b] = 0; if (sh_write_sectors(clba, spc, g_cluster) != 0) return -6; } src += chunk; remaining -= chunk; ci++; u32 fo = fat_byte_off + cur * 4; if (fo + 4 > sizeof(g_disk)) break; cur = sh_r32(g_disk + fo) & 0x0FFFFFFF; } /* 更新目录项 */ u32 entry_idx = found ? existing_idx : (u32)free_entry; shell_fat32_de *e = &dir[entry_idx]; if (!found) { for (int i = 0; i < 11; i++) e->name[i] = name11[i]; e->attr = 0x20; e->ntr = 0; e->ctenth = 0; e->ctime = 0; e->cdate = 0; e->adate = 0; } e->chigh = (u16)((first_clus >> 16) & 0xFFFF); e->clow = (u16)(first_clus & 0xFFFF); e->fsize = size; /* 回写 FAT（两份）+ 根目录 + 缓冲区内的数据簇 */ for (u32 f = 0; f < bpb->fc; f++) { u32 flba = fat_lba + f * fat_sectors; if (sh_write_sectors(flba, fat_sectors, g_disk + (u64)flba * 512) != 0) return -7; } u32 root_dir_lba = data_lba + (root_clus - 2) * spc; if ((u64)root_dir_lba * 512 + cluster_bytes <= 256ULL * 512) { if (sh_write_sectors(root_dir_lba, spc, g_disk + (u64)root_dir_lba * 512) != 0) return -8; } cur = first_clus; ci = 0; while (cur >= 2 && cur < 0x0FFFFFF8 && ci < clusters_needed) { u32 clba = data_lba + (cur - 2) * spc; if ((u64)clba * 512 + cluster_bytes <= 256ULL * 512) { if (sh_write_sectors(clba, spc, g_disk + (u64)clba * 512) != 0) return -9; } u32 fo = fat_byte_off + cur * 4; if (fo + 4 > sizeof(g_disk)) break; cur = sh_r32(g_disk + fo) & 0x0FFFFFFF; ci++; } g_disk_loaded = 0; /* 下次操作重新加载，避免使用脏缓存 */ return 0; } /* 删除根目录下指定 8.3 名文件：清空簇链 + 标记目录项为 0xE5。 * 返回 0 成功，-1 未找到，其他负值失败。 */ static int fat32_delete_root_file(const char *name11) { if (sh_disk_load() != 0) return -2; if (sh_read_sectors(0, 256, g_disk) != 0) return -3; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; u32 spc = bpb->spc; u32 fat_lba = bpb->rsvd; u32 fat_sectors = bpb->spf; u32 data_lba = bpb->rsvd + (u32)bpb->fc * bpb->spf; u32 fat_byte_off = bpb->rsvd * 512; u32 root_clus = bpb->root_clus; u32 root_lba = data_lba + (root_clus - 2) * spc; u8 *root_buf = g_disk + (u64)root_lba * 512; u32 max_entries = (spc * 512) / 32; shell_fat32_de *dir = (shell_fat32_de *)root_buf; u32 found_idx = 0xFFFFFFFFu; for (u32 e = 0; e < max_entries; e++) { if (dir[e].name[0] == 0) break; if ((u8)dir[e].name[0] == 0xE5) continue; if (dir[e].attr == 0x0F) continue; if (dir[e].attr & 0x08) continue; if (sh_neq11(dir[e].name, name11)) { found_idx = e; break; } } if (found_idx == 0xFFFFFFFFu) return -1; /* 释放簇链 */ u32 cur = (u32)sh_r16((const u8*)&dir[found_idx].clow) | ((u32)sh_r16((const u8*)&dir[found_idx].chigh) << 16); while (cur >= 2 && cur < 0x0FFFFFF8) { u32 fo = fat_byte_off + cur * 4; u32 next = 0; if (fo + 4 <= sizeof(g_disk)) next = sh_r32(g_disk + fo) & 0x0FFFFFFF; g_disk[fo] = 0; g_disk[fo+1] = 0; g_disk[fo+2] = 0; g_disk[fo+3] = 0; cur = next; } /* 标记目录项为已删除 */ dir[found_idx].name[0] = (char)0xE5; /* 回写 FAT + 根目录 */ for (u32 f = 0; f < bpb->fc; f++) { u32 flba = fat_lba + f * fat_sectors; if (sh_write_sectors(flba, fat_sectors, g_disk + (u64)flba * 512) != 0) return -4; } if (sh_write_sectors(root_lba, spc, g_disk + (u64)root_lba * 512) != 0) return -5; g_disk_loaded = 0; return 0; } /* 列出根目录所有文件/目录，调用回调输出 */ static int fat32_list_root(int (*emit)(const char *name, u32 size, u8 attr, void *u), void *u) { if (sh_disk_load() != 0) return -1; const shell_fat32_bpb *bpb = (const shell_fat32_bpb *)g_disk; u32 data_lba = bpb->rsvd + (u32)bpb->fc * bpb->spf; u32 fat_byte_off = bpb->rsvd * 512; u32 spc = bpb->spc; u32 clus = bpb->root_clus; while (clus >= 2 && clus < 0x0FFFFFF8) { u32 lba = data_lba + (clus - 2) * spc; const u8 *cb; if ((u64)lba * 512 + (u64)spc * 512 <= 256ULL * 512) cb = g_disk + (u64)lba * 512; else { if (sh_read_sectors(lba, 8, g_cluster) != 0) return -4; cb = g_cluster; } const shell_fat32_de *dir = (const shell_fat32_de *)cb; for (u32 e = 0; e * 32 < spc * 512; e++) { if (dir[e].name[0] == 0) goto done; if ((u8)dir[e].name[0] == 0xE5) continue; if (dir[e].attr == 0x0F) continue; if (dir[e].attr & 0x08) continue; char disp[13]; name_from_83(dir[e].name, disp); if (emit(disp, dir[e].fsize, dir[e].attr, u) != 0) goto done; } u32 fo = fat_byte_off + clus * 4; if (fo + 4 > sizeof(g_disk)) break; clus = sh_r32(g_disk + fo) & 0x0FFFFFFF; } done: return 0; } /* ---- 风格令牌（引用 deshab_ui.h 语义色） ---- */ #define BG_COLOR DS_DARK_BG_PRIMARY #define TEXT_FG DS_DARK_TEXT_PRIMARY #define PROMPT_FG DS_DARK_PROMPT #define ERROR_FG DP_ERROR #define OK_FG DP_SUCCESS #define DIM_FG DS_DARK_TEXT_DIM #define ACCENT_FG DS_DARK_ACCENT #define DECORATIVE_FG DS_DARK_DECORATIVE /* 标题栏参数 */ #define TITLEBAR_H 28 #define TITLEBAR_BG DP_ABYSS_800 #define TITLEBAR_FG DS_DARK_TEXT_SECONDARY #define TITLEBAR_ACCENT DS_DARK_ACCENT /* 状态栏参数 */ #define STATUSBAR_H 22 #define STATUSBAR_BG DP_ABYSS_800 /* 终端尺寸 */ #define TERM_COLS 100 #define TERM_ROWS 35 #define TERM_MAX_CHARS (TERM_COLS * TERM_ROWS) static du_context g_ctx; static u64 fb_a, fb_w, fb_h, fb_p; /* 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; /* ---- 终端像素坐标 ---- */ static int term_start_x, term_start_y; static void term_init_pos(void) { int margin_x = (int)DU_SPACE_MD; term_start_x = margin_x; /* 标题栏下方开始 */ term_start_y = TITLEBAR_H + (int)DU_SPACE_SM; int avail_w = (int)fb_w - margin_x * 2; int avail_h = (int)fb_h - term_start_y - STATUSBAR_H - (int)DU_SPACE_SM; term_w = avail_w / (int)DU_ASCII_STEP; term_h = avail_h / (int)DU_ASCII_LINE_H; 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) { 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]; } } 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(); } /* dev_mode 串口镜像：reserved[3]=1 时终端输出同步写 COM1，便于自动化验证 */ static int g_serial_mirror = 0; static void term_putc_color(char c, u32 color) { if (g_serial_mirror) { if (c == '\n') sputc('\r'); sputc(c); } 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); } /* ---- 标题栏渲染 ---- */ static void draw_titlebar(void) { du_fill_rect(&g_ctx, 0, 0, (i64)fb_w, TITLEBAR_H, TITLEBAR_BG); /* 底部强调线 */ du_fill_rect(&g_ctx, 0, TITLEBAR_H - 2, (i64)fb_w, 2, TITLEBAR_ACCENT); /* 左侧标题文字 */ du_draw_string(&g_ctx, "Deshab Shell", (i64)DU_SPACE_MD, (TITLEBAR_H - (i64)DU_ASCII_CELL_H) / 2, DS_DARK_TEXT_PRIMARY, TITLEBAR_BG, DU_ASCII_STEP); /* 右侧版本号 */ du_draw_string(&g_ctx, "v0.1.0", (i64)fb_w - 6 * (i64)DU_ASCII_STEP - (i64)DU_SPACE_MD, (TITLEBAR_H - (i64)DU_ASCII_CELL_H) / 2, DS_DARK_TEXT_DIM, TITLEBAR_BG, DU_ASCII_STEP); } /* ---- 状态栏渲染 ---- */ static void draw_statusbar(void) { i64 sy = (i64)fb_h - STATUSBAR_H; du_fill_rect(&g_ctx, 0, sy, (i64)fb_w, STATUSBAR_H, STATUSBAR_BG); /* 顶部强调线 */ du_fill_rect(&g_ctx, 0, sy, (i64)fb_w, 1, DS_DARK_DIVIDER); /* 左侧：当前路径 */ du_draw_string(&g_ctx, "/", (i64)DU_SPACE_MD, sy + (STATUSBAR_H - (i64)DU_ASCII_CELL_H) / 2, DS_DARK_TEXT_DIM, STATUSBAR_BG, DU_ASCII_STEP); /* 右侧：root@deshab */ const char *user = "root@deshab"; int ulen = 0; while (user[ulen]) ulen++; du_draw_string(&g_ctx, user, (i64)fb_w - ulen * (i64)DU_ASCII_STEP - (i64)DU_SPACE_MD, sy + (STATUSBAR_H - (i64)DU_ASCII_CELL_H) / 2, DS_DARK_ACCENT, STATUSBAR_BG, DU_ASCII_STEP); } static void term_redraw_all(void) { /* 清屏背景 */ du_fill_bg_solid(&g_ctx, BG_COLOR); /* 标题栏 */ draw_titlebar(); /* 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 * (i64)DU_ASCII_STEP; i64 y = term_start_y + (i64)r * (i64)DU_ASCII_LINE_H; du_draw_char(&g_ctx, ch, x, y, term_fg[idx], BG_COLOR); } } /* 光标 */ if (cur_visible && cur_col < term_w && cur_row < term_h) { i64 x = term_start_x + (i64)cur_col * (i64)DU_ASCII_STEP; i64 y = term_start_y + (i64)cur_row * (i64)DU_ASCII_LINE_H; du_fill_rect(&g_ctx, x, y + (i64)DU_ASCII_CELL_H - 3, (i64)DU_ASCII_CELL_W, 2, DS_DARK_CURSOR); } /* 状态栏 */ draw_statusbar(); } 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 * (i64)DU_ASCII_STEP; i64 y = term_start_y + (i64)cur_row * (i64)DU_ASCII_LINE_H; du_fill_rect(&g_ctx, x, y + (i64)DU_ASCII_CELL_H - 3, (i64)DU_ASCII_CELL_W, 2, DS_DARK_CURSOR); } } static void term_clear_cursor(void) { if (cur_col < term_w && cur_row < term_h) { i64 x = term_start_x + (i64)cur_col * (i64)DU_ASCII_STEP; i64 y = term_start_y + (i64)cur_row * (i64)DU_ASCII_LINE_H; du_fill_rect(&g_ctx, x, y + (i64)DU_ASCII_CELL_H - 3, (i64)DU_ASCII_CELL_W, 2, BG_COLOR); } } /* ---- 输入缓冲 ---- */ static char input_buf[256]; static int input_len = 0; static int input_cursor = 0; /* ---- 命令历史（上下箭头浏览） ---- */ /* 前向声明: redraw_input_line 在下方定义 */ static void redraw_input_line(void); #define HISTORY_MAX 32 static char g_history[HISTORY_MAX][256]; static int g_history_count = 0; /* 已记录命令条数 (0..HISTORY_MAX) */ static int g_history_view = -1; /* 当前浏览索引, -1 表示正在编辑新输入 */ /* 将命令推入历史。空字符串或纯空白不入历史；与最近一条相同时跳过。 */ static void history_push(const char *cmd) { const char *p = cmd; while (*p == ' ') p++; if (*p == 0) return; /* 与最近一条相同则跳过 */ if (g_history_count > 0) { const char *latest = g_history[(g_history_count - 1) % HISTORY_MAX]; const char *a = latest; const char *b = p; while (*a && *b && *a == *b) { a++; b++; } if (*a == 0 && *b == 0) return; } int idx = g_history_count % HISTORY_MAX; int i = 0; while (p[i] && i < 255) { g_history[idx][i] = p[i]; i++; } g_history[idx][i] = 0; if (g_history_count < HISTORY_MAX) g_history_count++; } /* 加载历史条目到 input_buf 并刷新显示 */ static void history_load(int idx) { const char *src = g_history[idx % HISTORY_MAX]; int i = 0; while (src[i] && i < 255) { input_buf[i] = src[i]; i++; } input_buf[i] = 0; input_len = i; input_cursor = i; redraw_input_line(); } /* 上箭头: 浏览更早的命令 */ static void history_prev(void) { if (g_history_count == 0) return; if (g_history_view == -1) { g_history_view = g_history_count - 1; } else if (g_history_view > 0) { g_history_view--; } else { return; /* 已到达最早一条 */ } history_load(g_history_view); } /* 下箭头: 浏览更新的命令; 超过最新则回到空输入 */ static void history_next(void) { if (g_history_view == -1) return; g_history_view++; if (g_history_view >= g_history_count) { g_history_view = -1; input_len = 0; input_cursor = 0; input_buf[0] = 0; redraw_input_line(); return; } history_load(g_history_view); } /* ---- 键盘扫描码 → ASCII（Set 1） ---- */ 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 显示文本（-n 不换行, > file 重定向写盘）\n"); term_puts(" ls / dir 列出根目录文件\n"); term_puts(" cat 显示文件内容\n"); term_puts(" cp 复制文件\n"); term_puts(" mv 移动/重命名文件\n"); term_puts(" rm 删除文件\n"); term_puts(" pwd 显示当前目录\n"); term_puts(" whoami 显示当前用户\n"); term_puts(" id 显示用户ID\n"); term_puts(" version/ver 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(" about 关于 Deshab\n"); term_puts(" pci 列出 PCI 设备\n"); term_puts(" run 运行根目录下的工具程序\n"); term_puts(" linux [args] 通过双内核兼容层运行 Linux 程序\n"); term_puts(" reboot 重启系统\n"); term_puts(" halt 关机（停止 CPU）\n"); term_putc('\n'); term_puts_color("外部命令（/bin/ 目录，PATH 自动查找）:\n", DIM_FG); term_puts(" ping ICMP echo 测试工具\n"); term_puts(" curl HTTP GET 请求工具\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"); term_puts_color(" Style: Sealed Arc (Deshab UI)\n", DIM_FG); } 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("视觉: Sealed Arc 设计语言\n", DECORATIVE_FG); term_puts_color("Built with Clang + lld\n", DIM_FG); term_puts_color("(c) 2026 Deshab Project\n", DIM_FG); } static void cmd_clear(void) { term_clear(); term_redraw_all(); } static void cmd_reboot(void) { term_puts_color("Rebooting...\n", PROMPT_FG); term_redraw_all(); outb(0x64, 0xFE); __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"); } /* echo：支持 -n（不换行）和 " > file" 重定向写盘 */ static void cmd_echo(const char *args) { int newline = 1; if (args && args[0] == '-' && args[1] == 'n' && (args[2] == ' ' || args[2] == 0)) { newline = 0; args += 2; while (*args == ' ') args++; } /* 检测 " > file" 重定向 */ const char *redir = 0; if (args) { const char *p = args; while (*p) { if (*p == '>') { redir = p; break; } p++; } } if (redir) { int text_len = (int)(redir - args); while (text_len > 0 && args[text_len-1] == ' ') text_len--; const char *fname = redir + 1; while (*fname == ' ') fname++; char fnbuf[64]; int fl = 0; while (*fname && *fname != ' ' && fl < 63) fnbuf[fl++] = *fname++; fnbuf[fl] = 0; if (fl == 0) { term_puts_color("echo: 重定向缺少文件名\n", ERROR_FG); return; } char n83[11]; if (name_to_83(fnbuf, n83) != 0) { term_puts_color("echo: 无效文件名\n", ERROR_FG); return; } static char echo_buf[4096]; int el = 0; for (int i = 0; i < text_len && el < 4095; i++) echo_buf[el++] = args[i]; if (newline) echo_buf[el++] = '\n'; if (!g_block_write) { term_puts_color("echo: 无块设备写能力\n", ERROR_FG); return; } int rc = fat32_write_root_file(n83, (const u8 *)echo_buf, (u32)el); if (rc != 0) { term_puts_color("echo: 写入失败\n", ERROR_FG); return; } term_puts_color("echo: 已写入 ", OK_FG); term_puts_color(fnbuf, OK_FG); term_putc('\n'); return; } if (args && *args) term_puts_color(args, TEXT_FG); if (newline) term_putc('\n'); } static u8 read_rtc_reg(u8 reg); static u8 bcd_to_bin_impl(u8 bcd); static void cmd_date(void) { 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)); char buf[32]; int p = 0; 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); } /* ============================================================ * 文件命令：ls / cat / cp / mv / rm（FAT32 根目录） * ============================================================ */ /* 从 args 解析一个空白分隔 token 到 out(最多 max-1 字符)，返回剩余 args 指针 */ static const char *parse_token(const char *args, char *out, int max) { int n = 0; while (*args == ' ') args++; while (*args && *args != ' ' && n < max - 1) out[n++] = *args++; out[n] = 0; return args; } /* u32 → 十进制字符串 */ static void u32_to_dec(char *buf, u32 v) { char tmp[12]; int n = 0; if (v == 0) { buf[0] = '0'; buf[1] = 0; return; } while (v && n < 11) { tmp[n++] = (char)('0' + v % 10); v /= 10; } for (int i = 0; i < n; i++) buf[i] = tmp[n - 1 - i]; buf[n] = 0; } /* ls 回调：每行打印一个条目 */ static int ls_emit(const char *name, u32 size, u8 attr, void *u) { (void)u; if (attr & 0x10) term_puts_color("[DIR] ", ACCENT_FG); else term_puts_color(" ", TEXT_FG); term_puts_color(name, TEXT_FG); /* 名字对齐填充 */ int nl = 0; while (name[nl]) nl++; for (int i = nl; i < 14; i++) term_putc(' '); if (!(attr & 0x10)) { char sz[12]; u32_to_dec(sz, size); term_puts_color(sz, DIM_FG); term_puts_color(" B", DIM_FG); } term_putc('\n'); return 0; } static void cmd_ls(void) { if (!g_block_read) { term_puts_color("ls: 无块设备\n", ERROR_FG); return; } if (fat32_list_root(ls_emit, 0) != 0) { term_puts_color("ls: 读取根目录失败\n", ERROR_FG); } } static void cmd_cat(const char *args) { if (!g_block_read) { term_puts_color("cat: 无块设备\n", ERROR_FG); return; } char fn[64]; parse_token(args, fn, 64); if (fn[0] == 0) { term_puts_color("用法: cat <文件>\n", ERROR_FG); return; } char n83[11]; if (name_to_83(fn, n83) != 0) { term_puts_color("cat: 无效文件名\n", ERROR_FG); return; } u8 *data = 0; u32 size = 0; if (fat32_read_root_file(n83, &data, &size) != 0) { term_puts_color("cat: 文件不存在\n", ERROR_FG); return; } for (u32 i = 0; i < size; i++) term_putc((char)data[i]); } static void cmd_cp(const char *args) { if (!g_block_read || !g_block_write) { term_puts_color("cp: 需要块设备读写能力\n", ERROR_FG); return; } char src[64], dst[64]; args = parse_token(args, src, 64); parse_token(args, dst, 64); if (src[0] == 0 || dst[0] == 0) { term_puts_color("用法: cp <源文件> <目标文件>\n", ERROR_FG); return; } char s83[11], d83[11]; if (name_to_83(src, s83) != 0) { term_puts_color("cp: 无效源文件名\n", ERROR_FG); return; } if (name_to_83(dst, d83) != 0) { term_puts_color("cp: 无效目标文件名\n", ERROR_FG); return; } u8 *data = 0; u32 size = 0; if (fat32_read_root_file(s83, &data, &size) != 0) { term_puts_color("cp: 源文件不存在或读取失败\n", ERROR_FG); return; } if (fat32_write_root_file(d83, data, size) != 0) { term_puts_color("cp: 写入目标失败\n", ERROR_FG); return; } term_puts_color("cp: ", OK_FG); term_puts_color(src, OK_FG); term_puts_color(" -> ", OK_FG); term_puts_color(dst, OK_FG); term_puts_color(" (", DIM_FG); char sz[12]; u32_to_dec(sz, size); term_puts_color(sz, DIM_FG); term_puts_color(" bytes)\n", DIM_FG); } static void cmd_mv(const char *args) { if (!g_block_read || !g_block_write) { term_puts_color("mv: 需要块设备读写能力\n", ERROR_FG); return; } char src[64], dst[64]; args = parse_token(args, src, 64); parse_token(args, dst, 64); if (src[0] == 0 || dst[0] == 0) { term_puts_color("用法: mv <源文件> <目标文件>\n", ERROR_FG); return; } char s83[11], d83[11]; if (name_to_83(src, s83) != 0) { term_puts_color("mv: 无效源文件名\n", ERROR_FG); return; } if (name_to_83(dst, d83) != 0) { term_puts_color("mv: 无效目标文件名\n", ERROR_FG); return; } u8 *data = 0; u32 size = 0; if (fat32_read_root_file(s83, &data, &size) != 0) { term_puts_color("mv: 源文件不存在或读取失败\n", ERROR_FG); return; } if (fat32_write_root_file(d83, data, size) != 0) { term_puts_color("mv: 写入目标失败\n", ERROR_FG); return; } /* 写入后 g_disk 缓存已失效，delete 会重新加载 BPB+FAT */ if (fat32_delete_root_file(s83) != 0) { term_puts_color("mv: 警告 — 源文件删除失败，目标已写入\n", DP_WARNING); return; } term_puts_color("mv: ", OK_FG); term_puts_color(src, OK_FG); term_puts_color(" -> ", OK_FG); term_puts_color(dst, OK_FG); term_putc('\n'); } static void cmd_rm(const char *args) { if (!g_block_write) { term_puts_color("rm: 需要块设备写能力\n", ERROR_FG); return; } char fn[64]; parse_token(args, fn, 64); if (fn[0] == 0) { term_puts_color("用法: rm <文件>\n", ERROR_FG); return; } char n83[11]; if (name_to_83(fn, n83) != 0) { term_puts_color("rm: 无效文件名\n", ERROR_FG); return; } int rc = fat32_delete_root_file(n83); if (rc == -1) { term_puts_color("rm: 文件不存在\n", ERROR_FG); return; } if (rc != 0) { term_puts_color("rm: 删除失败\n", ERROR_FG); return; } term_puts_color("rm: 已删除 ", OK_FG); term_puts_color(fn, OK_FG); term_putc('\n'); } /* ---- PCI 设备列表 ---- */ static u32 pci_config_read(u8 bus, u8 dev, u8 func, u8 reg) { u32 addr = 0x80000000u | ((u32)bus << 16) | ((u32)dev << 11) | ((u32)func << 8) | ((u32)reg & 0xFCu); outl(0xCF8, addr); return inl(0xCFC); } static void hex_nibble(char *buf, u8 v) { v = (u8)(v & 0x0F); buf[0] = (char)(v < 10 ? '0' + v : 'A' + (v - 10)); } static void u8_to_hex(char *buf, u8 v) { hex_nibble(buf, (u8)(v >> 4)); hex_nibble(buf + 1, v); buf[2] = 0; } static void u16_to_hex(char *buf, u16 v) { hex_nibble(buf, (u8)(v >> 12)); hex_nibble(buf+1, (u8)(v >> 8)); hex_nibble(buf+2, (u8)(v >> 4)); hex_nibble(buf+3, v); buf[4] = 0; } static void u8_to_dec(char *buf, u8 v) { if (v >= 100) { buf[0] = (char)('0' + v / 100); buf[1] = (char)('0' + (v / 10) % 10); buf[2] = (char)('0' + v % 10); buf[3] = 0; } else if (v >= 10) { buf[0] = (char)('0' + v / 10); buf[1] = (char)('0' + v % 10); buf[2] = 0; } else { buf[0] = (char)('0' + v); buf[1] = 0; } } static const char *pci_vendor_name(u16 vendor) { switch (vendor) { case 0x8086: return "Intel"; case 0x1234: return "Bochs/QEMU"; case 0x1AF4: return "Virtio"; case 0x168C: return "Atheros"; case 0x10DE: return "NVIDIA"; case 0x1002: return "AMD"; case 0x10EC: return "Realtek"; case 0x14E4: return "Broadcom"; case 0x1B36: return "Red Hat"; case 0x1022: return "AMD-x86"; case 0x106B: return "Apple"; default: return ""; } } static const char *pci_class_name(u8 class_code) { switch (class_code) { case 0x00: return "Unclassified"; case 0x01: return "Mass storage"; case 0x02: return "Network"; case 0x03: return "Display"; case 0x04: return "Multimedia"; case 0x05: return "Memory"; case 0x06: return "Bridge"; case 0x07: return "Comm"; case 0x08: return "Sys peripheral"; case 0x09: return "Input"; case 0x0C: return "Serial bus"; case 0x0D: return "Wireless"; case 0x10: return "Encryption"; case 0x11: return "Signal proc"; case 0x40: return "Coprocessor"; default: return "Other"; } } static void cmd_pci(void) { int count = 0; term_puts_color("PCI 设备列表:\n", PROMPT_FG); for (u8 bus = 0; bus < 1; bus++) { for (u8 dev = 0; dev < 32; dev++) { u32 vd = pci_config_read(bus, dev, 0, 0x00); if ((vd & 0xFFFFu) == 0xFFFFu) continue; u32 hdr_class = pci_config_read(bus, dev, 0, 0x0C); u8 header_type = (u8)((hdr_class >> 16) & 0xFF); u8 func_count = (u8)((header_type & 0x80) ? 8 : 1); for (u8 func = 0; func < func_count; func++) { u32 vdf = pci_config_read(bus, dev, func, 0x00); u16 vendor = (u16)(vdf & 0xFFFFu); u16 device = (u16)(vdf >> 16); if (vendor == 0xFFFFu) continue; u32 cls = pci_config_read(bus, dev, func, 0x08); u8 rev = (u8)(cls & 0xFF); u8 prog_if = (u8)((cls >> 8) & 0xFF); u8 subclass = (u8)((cls >> 16) & 0xFF); u8 class_code = (u8)((cls >> 24) & 0xFF); char line[80]; int p = 0; /* "00:00.0 " */ u8_to_hex(line + p, bus); p += 2; line[p++] = ':'; u8_to_hex(line + p, dev); p += 2; line[p++] = '.'; u8_to_hex(line + p, func); p += 2; line[p++] = ' '; /* "VEN:DEV " */ u16_to_hex(line + p, vendor); p += 4; line[p++] = ':'; u16_to_hex(line + p, device); p += 4; line[p++] = ' '; /* "rev NN " */ line[p++] = 'r'; line[p++] = 'e'; line[p++] = 'v'; line[p++] = ' '; u8_to_hex(line + p, rev); p += 2; line[p++] = ' '; /* "class CC:SS:PP" */ line[p++] = 'c'; line[p++] = 'l'; line[p++] = 'a'; line[p++] = 's'; line[p++] = 's'; line[p++] = ' '; u8_to_hex(line + p, class_code); p += 2; line[p++] = ':'; u8_to_hex(line + p, subclass); p += 2; line[p++] = ':'; u8_to_hex(line + p, prog_if); p += 2; line[p++] = ' '; line[p++] = '['; const char *cn = pci_class_name(class_code); while (*cn) line[p++] = *cn++; line[p++] = ']'; const char *vn = pci_vendor_name(vendor); if (*vn) { line[p++] = ' '; while (*vn) line[p++] = *vn++; } line[p] = 0; term_puts(line); term_putc('\n'); count++; } } } char tail[32]; int q = 0; const char *prefix = "Total: "; while (prefix[q]) { tail[q] = prefix[q]; q++; } u8_to_dec(tail + q, (u8)(count > 255 ? 255 : count)); while (tail[q]) q++; const char *suffix = " device(s)\n"; int s = 0; while (suffix[s]) { tail[q++] = suffix[s++]; } tail[q] = 0; term_puts_color(tail, DIM_FG); } static u64 g_kernel_api = 0; static const dsk_boot_context *g_boot_ctx = 0; static const linux_compat_service *g_lxc_svc = 0; /* ============================================================ * run 命令：从 FAT32 根目录加载并跳转 PIE ELF 工具 * ============================================================ */ #define SH_ELFCLASS64 2 #define SH_EM_X86_64 62 #define SH_PT_LOAD 1 #define SH_PT_DYNAMIC 2 #define SH_DT_RELA 7 #define SH_DT_RELASZ 8 #define SH_DT_RELAENT 9 #define SH_R_X86_64_RELATIVE 8 typedef struct { u8 ident[16]; u16 type,machine; u32 ver; u64 entry,phoff,shoff; u32 flags; u16 ehsize,phentsize,phnum,shentsize,shnum,shstrndx; } sh_elf64_ehdr; typedef struct { u32 type,flags; u64 offset,vaddr,paddr,filesz,memsz,align; } sh_elf64_phdr; typedef struct { i64 tag; u64 val; } sh_elf64_dyn; typedef struct { u64 offset; u64 info; i64 addend; } sh_elf64_rela; /* run 加载镜像缓冲（容纳工具 ELF 展开后的 memsz） */ static u8 g_run_image[262144]; static int sh_load_elf(u8 *data, void **entry_out) { const sh_elf64_ehdr *eh = (const sh_elf64_ehdr *)data; if (eh->ident[0] != 0x7F || eh->ident[4] != SH_ELFCLASS64) return -1; if (eh->machine != SH_EM_X86_64) return -2; u64 min_vaddr = ~0ULL, max_vaddr = 0; u32 lc = 0; for (u16 i = 0; i < eh->phnum; i++) { const sh_elf64_phdr *ph = (const sh_elf64_phdr *)(data + eh->phoff + (u64)i * eh->phentsize); if (ph->type != SH_PT_LOAD) continue; if (ph->filesz > ph->memsz) return -3; if (ph->vaddr < min_vaddr) min_vaddr = ph->vaddr; if (ph->vaddr + ph->memsz > max_vaddr) max_vaddr = ph->vaddr + ph->memsz; lc++; } if (!lc || min_vaddr == ~0ULL) return -4; u64 isize = (max_vaddr - min_vaddr + 0xFFF) & ~0xFFFULL; if (isize > sizeof(g_run_image)) return -5; u8 *image = g_run_image; for (u64 i = 0; i < isize; i++) image[i] = 0; for (u16 i = 0; i < eh->phnum; i++) { const sh_elf64_phdr *ph = (const sh_elf64_phdr *)(data + eh->phoff + (u64)i * eh->phentsize); if (ph->type != SH_PT_LOAD) continue; u64 off = ph->vaddr - min_vaddr; for (u64 b = 0; b < ph->filesz; b++) image[off + b] = data[ph->offset + b]; } *entry_out = image + (eh->entry - min_vaddr); /* R_X86_64_RELATIVE 重定位 */ u64 load_bias = (u64)image - min_vaddr; for (u16 i = 0; i < eh->phnum; i++) { const sh_elf64_phdr *ph = (const sh_elf64_phdr *)(data + eh->phoff + (u64)i * eh->phentsize); if (ph->type != SH_PT_DYNAMIC) continue; const sh_elf64_dyn *dyn = (const sh_elf64_dyn *)(image + (ph->vaddr - min_vaddr)); u64 rela_off = 0, rela_sz = 0, rela_ent = 24; for (; dyn->tag != 0; dyn++) { if (dyn->tag == SH_DT_RELA) rela_off = dyn->val; else if (dyn->tag == SH_DT_RELASZ) rela_sz = dyn->val; else if (dyn->tag == SH_DT_RELAENT) rela_ent = dyn->val; } if (rela_off && rela_sz) { u64 cnt = rela_sz / rela_ent; for (u64 rr = 0; rr < cnt; rr++) { const sh_elf64_rela *rel = (const sh_elf64_rela *)(image + (rela_off - min_vaddr) + rr * rela_ent); if ((u32)(rel->info & 0xFFFFFFFF) == SH_R_X86_64_RELATIVE) { u64 *slot = (u64 *)(image + (rel->offset - min_vaddr)); *slot = load_bias + (u64)rel->addend; } } } } return 0; } /* run NAME.ELF — 加载根目录工具，全屏执行，返回后重绘 shell */ static void cmd_run(const char *args) { if (!g_block_read) { term_puts_color("run: 无块设备\n", ERROR_FG); return; } char fn[64]; parse_token(args, fn, 64); if (fn[0] == 0) { term_puts_color("用法: run \n", ERROR_FG); return; } char n83[11]; if (name_to_83(fn, n83) != 0) { term_puts_color("run: 无效文件名\n", ERROR_FG); return; } u8 *data = 0; u32 size = 0; if (fat32_read_root_file(n83, &data, &size) != 0) { term_puts_color("run: 文件不存在: ", ERROR_FG); term_puts_color(fn, ERROR_FG); term_putc('\n'); return; } void *entry = 0; int rc = sh_load_elf(data, &entry); if (rc != 0) { term_puts_color("run: ELF 加载失败（无效格式或过大）\n", ERROR_FG); return; } logl("[shell] run: jumping to tool"); void (*fn_entry)(const dsk_boot_context *) = (void (*)(const dsk_boot_context *))entry; fn_entry(g_boot_ctx); logl("[shell] run: tool returned"); /* 工具可能改动磁盘/显示状态：失效 FAT 缓存并重绘 */ g_disk_loaded = 0; term_redraw_all(); } /* ============================================================ * PATH 查找：在 /bin 子目录中搜索 name.ELF 并执行 * 返回 1 表示找到并已处理（成功或报错），0 表示未找到 * ============================================================ */ static int path_search_and_run(const char *name, const char *args) { (void)args; /* 参数保留供未来扩展 */ if (!g_block_read) return 0; /* 构造 "NAME.ELF" → 8.3 名 */ char full[64]; int nl = 0; while (name[nl] && nl < 55) nl++; int p = 0; for (int i = 0; i < nl; i++) full[p++] = name[i]; full[p++] = '.'; full[p++] = 'E'; full[p++] = 'L'; full[p++] = 'F'; full[p] = 0; char n83[11]; if (name_to_83(full, n83) != 0) return 0; /* 获取 /bin 目录首簇 */ u32 bin_clus; if (get_bin_cluster(&bin_clus) != 0) return 0; /* 从 /bin 子目录读取 ELF */ u8 *data = 0; u32 size = 0; if (fat32_read_file_in_dir(bin_clus, n83, &data, &size) != 0) return 0; /* 加载 ELF */ void *entry = 0; int rc = sh_load_elf(data, &entry); if (rc != 0) { term_puts_color(name, ERROR_FG); term_puts_color(": ELF 加载失败\n", ERROR_FG); return 1; } /* 执行 */ logl("[shell] path: running /bin/ tool"); void (*fn_entry)(const dsk_boot_context *) = (void (*)(const dsk_boot_context *))entry; fn_entry(g_boot_ctx); logl("[shell] path: tool returned"); g_disk_loaded = 0; term_redraw_all(); return 1; } /* ============================================================ * linux 命令：通过双内核兼容层执行 Linux 程序 * * 用法: * linux 显示兼容层状态 * linux [args] 执行 /bin/（或完整路径） * linux ls -la → 执行 /bin/ls -la * linux uname -a → 执行 /bin/uname -a * * 依赖 UTSM+Linux 双内核架构: Linux guest 作为 daemon park 在 VMX * guest 中,shell 通过 g_lxc_svc->exec 写 IPC 请求并 vmresume 唤醒。 * ============================================================ */ /* 简单 token 分词：将 args 按空格切分为 argv[]，返回 argc。 * 不支持引号转义（保持与 shell 其余部分一致的简单分词）。 */ static int split_args(const char *args, char argv[16][64], int max_argc) { int argc = 0; const char *p = args; while (*p && argc < max_argc) { while (*p == ' ') p++; if (*p == 0) break; int len = 0; while (*p && *p != ' ' && len < 63) { argv[argc][len++] = *p++; } argv[argc][len] = 0; argc++; } return argc; } static void cmd_linux(const char *args) { if (!g_lxc_svc) { term_puts_color("linux: 兼容层服务未初始化（boot context 未提供）\n", ERROR_FG); return; } if (!g_lxc_svc->is_available()) { term_puts_color("linux: 兼容层不可用（Linux guest 未驻留或 IPC 未就绪）\n", ERROR_FG); char status[128]; g_lxc_svc->status(status, sizeof(status)); term_puts_color(status, ERROR_FG); term_putc('\n'); return; } /* 无参数：显示状态 */ while (*args == ' ') args++; if (*args == 0) { term_puts_color("Linux 兼容层已就绪 (双内核 park-and-resume)\n", OK_FG); term_puts_color("用法: linux <程序> [参数...]\n", DIM_FG); term_puts_color("示例: linux ls -la / linux uname -a / linux cat /etc/hostname\n", DIM_FG); return; } /* 分词参数 */ char argv_buf[16][64]; int argc = split_args(args, argv_buf, 16); if (argc == 0) { term_puts_color("linux: 参数解析失败\n", ERROR_FG); return; } /* 构造程序路径： * - 以 '/' 开头视为绝对路径 * - 否则前缀 "/bin/" */ char path[160]; const char *prog = argv_buf[0]; if (prog[0] == '/') { int i = 0; while (prog[i] && i < 159) { path[i] = prog[i]; i++; } path[i] = 0; } else { const char *prefix = "/bin/"; int i = 0; while (prefix[i]) { path[i] = prefix[i]; i++; } int j = 0; while (prog[j] && i < 159) { path[i++] = prog[j++]; } path[i] = 0; } /* 构造 argv 指针数组（argv[0] = 程序名） */ const char *argv_ptrs[16]; argv_ptrs[0] = prog; /* argv[0] 用程序名（不带 /bin/ 前缀） */ for (int i = 1; i < argc; i++) argv_ptrs[i] = argv_buf[i]; /* 执行：stdout 缓冲区 */ static char stdout_buf[8192]; u64 stdout_len = 0; u64 exit_code = 0; logl("[shell] linux: exec "); logl(path); int rc = g_lxc_svc->exec(path, argc, argv_ptrs, stdout_buf, sizeof(stdout_buf) - 1, &stdout_len, &exit_code); if (rc != 0) { term_puts_color("linux: 执行失败 (code=", ERROR_FG); char num[16]; int neg = rc < 0; unsigned int v = neg ? (unsigned int)(-rc) : (unsigned int)rc; int n = 0; if (v == 0) num[n++] = '0'; while (v) { num[n++] = '0' + (v % 10); v /= 10; } if (neg) term_putc('-'); for (int i = n - 1; i >= 0; i--) term_putc(num[i]); term_puts_color(")\n", ERROR_FG); return; } /* 输出 stdout */ if (stdout_len > 0) { stdout_buf[stdout_len] = 0; term_puts(stdout_buf); /* 确保末尾换行 */ if (stdout_buf[stdout_len - 1] != '\n') { term_putc('\n'); } } /* 非零退出码提示 */ if (exit_code != 0) { term_puts_color("[exit ", DIM_FG); char ec[16]; unsigned int ev = (unsigned int)exit_code; int en = 0; if (ev == 0) ec[en++] = '0'; while (ev) { ec[en++] = '0' + (ev % 10); ev /= 10; } for (int i = en - 1; i >= 0; i--) term_putc(ec[i]); term_puts_color("]\n", DIM_FG); } } static void execute_command(const char *cmd) { while (*cmd == ' ') cmd++; if (*cmd == 0) return; const char *args = cmd; while (*args && *args != ' ') args++; int cmd_name_len = (int)(args - cmd); 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; while (*args == ' ') args++; 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_ls(); else if (str_eq(name, "pci")) cmd_pci(); else if (str_eq(name, "cat")) cmd_cat(args); else if (str_eq(name, "cp")) cmd_cp(args); else if (str_eq(name, "mv")) cmd_mv(args); else if (str_eq(name, "rm") || str_eq(name, "del")) cmd_rm(args); else if (str_eq(name, "run")) cmd_run(args); else if (str_eq(name, "linux")) cmd_linux(args); 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"); } /* ---- PATH 查找：未匹配内建时搜索 /bin/ ---- */ else if (!path_search_and_run(name, args)) { 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) { int prompt_len = 0; while (PROMPT[prompt_len]) prompt_len++; i64 y = term_start_y + (i64)cur_row * (i64)DU_ASCII_LINE_H; du_fill_rect(&g_ctx, term_start_x, y, (i64)term_w * (i64)DU_ASCII_STEP, (i64)DU_ASCII_CELL_H, BG_COLOR); for (int i = 0; i < prompt_len; i++) { i64 x = term_start_x + (i64)i * (i64)DU_ASCII_STEP; du_draw_char(&g_ctx, PROMPT[i], x, y, PROMPT_FG, BG_COLOR); } for (int i = 0; i < input_len; i++) { i64 x = term_start_x + (i64)(prompt_len + i) * (i64)DU_ASCII_STEP; du_draw_char(&g_ctx, input_buf[i], x, y, TEXT_FG, BG_COLOR); } cur_col = prompt_len + input_cursor; term_redraw_cursor(); } static void insert_char(char c) { if (input_len >= 255) return; 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; 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(); } /* 开发者模式:自动测试命令序列（ls/echo>/cat/cp/mv/rm） * 由 DSK 在 firstInit.txt 第二行=1 时触发，reserved[3]=1 */ static void run_dev_tests(void) { term_puts_color("=== 开发者模式:自动测试命令 ===\n", PROMPT_FG); term_putc('\n'); term_puts_color("[1] ls — 列出根目录\n", ACCENT_FG); cmd_ls(); term_putc('\n'); term_puts_color("[2] echo \"Deshab dev test\" > TEST.TXT\n", ACCENT_FG); cmd_echo("Deshab dev test > TEST.TXT"); term_puts_color("[3] cat TEST.TXT — 读回验证\n", ACCENT_FG); cmd_cat("TEST.TXT"); term_putc('\n'); term_puts_color("[4] cp TEST.TXT COPY.TXT\n", ACCENT_FG); cmd_cp("TEST.TXT COPY.TXT"); term_puts_color("[5] ls — 确认复制\n", ACCENT_FG); cmd_ls(); term_putc('\n'); term_puts_color("[6] mv COPY.TXT MOVED.TXT\n", ACCENT_FG); cmd_mv("COPY.TXT MOVED.TXT"); term_puts_color("[7] ls — 确认移动\n", ACCENT_FG); cmd_ls(); term_putc('\n'); term_puts_color("[8] rm TEST.TXT\n", ACCENT_FG); cmd_rm("TEST.TXT"); term_puts_color("[9] rm MOVED.TXT — 清理\n", ACCENT_FG); cmd_rm("MOVED.TXT"); term_puts_color("[10] ls — 确认清理\n", ACCENT_FG); cmd_ls(); term_puts_color("[11] ping — 外部命令（/bin/ping.elf），跳过内联测试\n", ACCENT_FG); term_putc('\n'); term_puts_color("=== 自动测试完成 ===\n", OK_FG); term_puts_color("按 Esc 返回 DSK，或继续输入命令\n", DIM_FG); term_putc('\n'); } /* ---- 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; /* 保存 boot 上下文（网络协议栈/run 命令使用） */ g_kernel_api = ctx->dkm_kernel_api; g_boot_ctx = ctx; /* 获取 block 设备 read/write（从 kernel_api + 0xA8 → block_api → +16/+24） */ { u64 api = ctx->dkm_kernel_api; u64 blk = *(u64 *)(api + 0xA8); g_block_read = blk ? (shell_block_read_fn)*(u64 *)(blk + 16) : 0; g_block_write = blk ? (shell_block_write_fn)*(u64 *)(blk + 24) : 0; } if (g_block_read) logl("[shell] block_read ok"); if (g_block_write) logl("[shell] block_write ok"); /* 获取 Linux 兼容层服务（reserved[5]）—— 双内核 park-and-resume */ { u64 lxc_addr = ctx->reserved[5]; if (lxc_addr) { const linux_compat_service *lxc = (const linux_compat_service *)lxc_addr; if (lxc->magic == LINUX_COMPAT_MAGIC) { g_lxc_svc = lxc; logl("[shell] linux_compat service ok"); } else { logl("[shell] linux_compat magic mismatch"); } } else { logl("[shell] linux_compat service not available"); } } /* 初始化风格系统渲染上下文 */ du_context_init(&g_ctx, fb_a, fb_w, fb_h, fb_p); term_init_pos(); term_clear(); term_redraw_all(); /* 启动 banner — 使用风格令牌 */ term_puts_color("=== Deshab OS v0.1.0 ===\n", ACCENT_FG); if (ctx->reserved[3] == 1) term_puts_color("开发者模式 (自动测试命令)\n", OK_FG); else 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'); /* 开发者模式:DSK 设 reserved[3]=1 时自动跑命令测试序列 */ if (ctx->reserved[3] == 1) { g_serial_mirror = 1; run_dev_tests(); } /* 将 banner + dev test 输出刷新到 framebuffer */ term_redraw_all(); /* 主循环 */ int shift = 0; int e0 = 0; u64 blink_start = rdtsc_shell(); 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; cur_visible = 1; redraw_input_line(); int cmd_done = 0; while (!cmd_done) { /* 光标闪烁：每 ~530ms 切换一次可见性 */ if (g_tsc_per_ms) { u64 now = rdtsc_shell(); u64 elapsed = now - blink_start; int want_vis = (elapsed / (g_tsc_per_ms * 530)) & 1; if (want_vis != cur_visible) { if (want_vis) term_redraw_cursor(); else term_clear_cursor(); cur_visible = want_vis; } } u8 st = inb(0x64); if (!(st & 1)) { __asm__("pause"); continue; } u8 data = inb(0x60); if (st & 0x20) continue; u8 sc = data; /* 有键盘输入时重置闪烁，让光标保持可见 */ blink_start = rdtsc_shell(); if (!cur_visible) { cur_visible = 1; term_redraw_cursor(); } 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) { if (e0 && sc == 0x9C) { e0 = 0; } else if (e0 && sc == 0xCB) { e0 = 0; } else if (e0 && sc == 0xCD) { e0 = 0; } else if (e0 && sc == 0xC8) { e0 = 0; } else if (e0 && sc == 0xD0) { e0 = 0; } else if (e0 && sc == 0xD3) { e0 = 0; } else if (e0 && sc == 0xC7) { e0 = 0; } else if (e0 && sc == 0xCF) { e0 = 0; } e0 = 0; continue; } if (e0) { if (sc == 0x4B) cursor_left(); else if (sc == 0x4D) cursor_right(); else if (sc == 0x47) cursor_home(); else if (sc == 0x4F) cursor_end(); else if (sc == 0x53) delete_char_fwd(); else if (sc == 0x48) { history_prev(); } else if (sc == 0x50) { history_next(); } e0 = 0; continue; } if (sc == 0x1C) { term_clear_cursor(); input_buf[input_len] = 0; /* 提交命令前先入历史; 执行后再清空输入 */ history_push(input_buf); g_history_view = -1; term_putc('\n'); execute_command(input_buf); input_len = 0; input_cursor = 0; input_buf[0] = 0; cmd_done = 1; continue; } if (sc == 0x0E) { delete_char_back(); continue; } if (sc == 0x01) { logl("[shell] esc -> return to DSK"); return; } if (sc == 0x15 && !shift) { kill_line(); continue; } if (sc == 0x17 && !shift) { while (input_cursor > 0) delete_char_back(); continue; } if (sc == 0x0B && !shift) { kill_to_end(); continue; } char c = scan_to_ascii(sc, shift); if (c && c >= 32 && c <= 126) { insert_char(c); } } } }