- UTSM panic_full returns in fallback mode (logs [PANIC:FALLBACK] + code + hit count); panic_halt keeps always-halt sites (CPU exception, VMM-E11 LA57, VMM-E15 DSK jump, UTSM-E42 test hook). Call sites given safe continuations. - Mode passed to DSK/FirstInit/login/desktop via DSK_BOOT_FLAG_PANIC_FALLBACK; DKM kernel_api.panic / kern.log.panic return to driver; ext4 fatal aborts the op via setjmp/longjmp and DSK falls back to FAT32 ESP. - build.ps1/Makefile: dev=strict, release=fallback, new realtest (release options + strict); default -Variant all; serialized iso packing under -j. - Fix '*/' inside comments (dkm.h, kernel_api.h, bus.c) that broke the build. - Includes pending work: dkm_bus service bus, mt7920/wlan drivers, desktop files/startmenu/prank, pe-tools, diskinfo, docs. Co-authored-by: Cursor <cursoragent@cursor.com>
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
#ifndef UTSM_PANIC_H
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#define UTSM_PANIC_H
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#include <utsm/types.h>
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/* ===================================================================
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* F1: 内核 panic 统一兜底(莲花崩溃屏)
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*
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* 崩了也得崩出莲花:
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* - 帧缓冲直接绘制(不走 console_fb 驱动——崩溃时驱动可能已挂)
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* - 淡金莲花 + panic_symbol + 消息 + 寄存器简表
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* - DRR 归档(crash_buf)后 halt
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*
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* 本路径只依赖:Limine framebuffer(Limine 常驻映射)+ serial + DRR
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* Emergency Pool(静态区),不依赖堆/驱动/中断。
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* =================================================================== */
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/* 寄存器简表(可传 0:无异常帧的普通 panic) */
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typedef struct panic_regs {
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u64 rip;
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u64 rsp;
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u64 rflags;
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u64 cs;
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u64 err;
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u64 vector;
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u64 cr2;
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u64 rax, rcx, rdx, rsi, rdi, r8, r9, r10, r11;
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} panic_regs;
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/* ===================================================================
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* panic 模式(FUCK [panic] mode=strict|fallback,默认 strict)
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*
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* strict :panic_full 画莲花屏 + DRR 归档 + halt,不返回(零降级铁律)。
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* fallback:panic_full 只留串口坐标 + 计数后返回,调用点必须紧跟一条
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* 可执行的备用路径(返回错误码 / 跳过该能力 / 回退实现)。
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* 寄存器帧非空(CPU 异常)时无论模式都 halt。
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*
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* panic_halt 无视模式恒 halt,仅用于"没有任何可继续的状态"的终点:
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* CPU 异常、LA57 激活(4 级页表 walk 会写坏内存)、DSK 交接失败、
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* panic_test 演示钩子。
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* =================================================================== */
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/* 统一 panic 入口:strict 模式不返回;fallback 模式记录后返回 */
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void panic_full(const char *symbol, const char *msg, const panic_regs *regs);
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/* 恒 halt 的 panic(不受 fallback 模式影响) */
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__attribute__((noreturn))
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void panic_halt(const char *symbol, const char *msg, const panic_regs *regs);
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/* 设置/查询 fallback 模式(kernel/main.c 读 FUCK 后设置一次) */
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void panic_set_fallback(int enable);
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int panic_fallback_enabled(void);
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/* fallback 模式下被吞掉的 panic 次数 */
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u32 panic_fallback_hits(void);
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/* 兼容旧接口:panic("msg") = panic_full("UTSM-PANIC", msg, 0) */
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void panic(const char *msg);
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#endif /* UTSM_PANIC_H */
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