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Deshab-OS/CODE/UTSM/kernel/panic.c
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#include <utsm/log.h>
#include <utsm/types.h>
#include <utsm/panic.h>
#include <utsm/drr.h>
/* ===================================================================
* F1: 莲花崩溃屏(panic_full)
*
* "崩了也得崩出莲花。"
* 帧缓冲直绘(fbcon 抽象,F2):DEAICUP 莲花 Logo(ohMyLogo.png
* 内嵌)+ panic_symbol + 消息 + 寄存器简表,背景色与图片背景一致,
* DRR crash_buf 归档后 halt。不依赖驱动/堆/中断。
* =================================================================== */
void arch_halt_forever(void);
/* 11x18 Consolas 灰度字库(同 firstInit/ascii_bitmaps.c,自动生成)。
* 先包含字库再定义 FBCON_HAVE_FONT 引出 fbcon 文本接口。 */
#include "panic_font.inc"
#define FBCON_HAVE_FONT 1
#include <utsm/fbcon.h>
/* DEAICUP 莲花 Logo(ohMyLogo.png 缩放 384px,RGBA8888)+
* 背景色(图片四角平均色)。生成:kernel/gen_panic_logo.py */
#include "panic_logo_data.inc"
/* ---- hex 输出 ---- */
static void phex64(fbc_ctx *p, u64 v, i64 x, i64 y, u32 fg) {
char buf[19];
buf[0] = '0'; buf[1] = 'x';
for (i32 i = 0; i < 16; i++) {
u32 nib = (u32)((v >> ((15 - i) * 4)) & 0xF);
buf[2 + i] = (char)(nib < 10 ? '0' + nib : 'A' + nib - 10);
}
buf[18] = 0;
fbc_string(p, buf, x, y, fg);
}
static void pregline(fbc_ctx *p, const char *name, u64 v, i64 x, i64 y, u32 fg) {
fbc_string(p, name, x, y, fg);
phex64(p, v, x + 5 * g_ascii_w, y, fg);
}
/* ---- DRR 归档(drr.h 声明,drr_stub.c 提供;未初始化时返回 -1) ---- */
void panic_full(const char *symbol, const char *msg, const panic_regs *regs) {
log_error("[PANIC] ==========================================");
log_error("[PANIC] panic_full: 莲花崩溃屏");
if (symbol) { log_error("[PANIC] symbol:"); log_error(symbol); }
if (msg) { log_error("[PANIC] msg:"); log_error(msg); }
if (regs) {
log_hex64("[PANIC] vector=", regs->vector);
log_hex64("[PANIC] err=", regs->err);
log_hex64("[PANIC] rip=", regs->rip);
log_hex64("[PANIC] rsp=", regs->rsp);
log_hex64("[PANIC] rflags=", regs->rflags);
log_hex64("[PANIC] cr2=", regs->cr2);
log_hex64("[PANIC] rax=", regs->rax);
log_hex64("[PANIC] rcx=", regs->rcx);
log_hex64("[PANIC] rdx=", regs->rdx);
}
int archived = drr_crash_archive(symbol, msg, regs);
if (archived == 0) {
log_error("[PANIC] 本次崩溃已归档至 DRR");
} else {
log_warn("[PANIC] DRR 归档不可用(未初始化),仅留串口日志");
}
/* 屏幕绘制放在归档之后:绘制循环中再出异常也不丢归档 */
fbc_ctx P, *p = &P;
if (fbc_init(p) == 0) {
/* 背景色 = Logo 图片背景色(四角平均,gen_panic_logo.py 生成) */
fbc_fill_bg(p, g_panic_logo_bg);
/* DEAICUP 莲花 Logo 居中,文字随 logo 下缘排布 */
i64 ly = ((i64)p->h - (i64)g_panic_logo_h) / 2 - 40;
if (ly < 8) ly = 8;
fbc_draw_rgba(p, g_panic_logo_rgba,
(i64)g_panic_logo_w, (i64)g_panic_logo_h,
((i64)p->w - (i64)g_panic_logo_w) / 2, ly);
const u32 fg = 0xFFF0E8D8, dim = 0xFFB0A8C0, acc = 0xFFF0D080;
i64 y = ly + (i64)g_panic_logo_h + 8;
fbc_string_center(p, "DESHAB PANIC", y, acc);
y += g_ascii_h + 8;
if (symbol) { fbc_string_center(p, symbol, y, fg); y += g_ascii_h + 8; }
if (msg) {
/* 单行截断 60 字符 */
char line[61];
u32 i = 0;
while (msg[i] && i < 60) { line[i] = msg[i]; i++; }
line[i] = 0;
fbc_string_center(p, line, y, fg);
y += g_ascii_h + 8;
}
if (regs) {
if (y + g_ascii_h * 6 < (i64)p->h) {
pregline(p, "RIP ", regs->rip, (i64)p->w / 2 - 14 * g_ascii_w / 2, y, dim); y += g_ascii_h + 2;
pregline(p, "RSP ", regs->rsp, (i64)p->w / 2 - 14 * g_ascii_w / 2, y, dim); y += g_ascii_h + 2;
pregline(p, "FLG ", regs->rflags, (i64)p->w / 2 - 14 * g_ascii_w / 2, y, dim); y += g_ascii_h + 2;
if (regs->vector == 14) {
pregline(p, "CR2 ", regs->cr2, (i64)p->w / 2 - 14 * g_ascii_w / 2, y, dim);
}
}
}
fbc_string_center(p, archived == 0 ? "crash archived to DRR" : "DRR archive unavailable",
(i64)p->h - g_ascii_h - 24, dim);
}
log_error("[PANIC] halt");
arch_halt_forever();
}
void panic(const char *msg) {
panic_full("UTSM-PANIC", msg, 0);
}