mirrors/Zag
1
0
Fork 0
mirror of https://github.com/rdmsr/zag.git synced 2026-10-31 15:28:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat: better panic handler

Browse Source
This commit is contained in:
Loïc Grégoire
2026-04-17 20:35:44 -04:00
parent 927ea2e1b8
commit c68a93b302
6 changed files with 217 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/kern/amd64/int.zig
+27 -7
View File
@@ -1,6 +1,8 @@
const amd64 = @import("arch");
const std = @import("std");
const b = @import("base");
const ke = b.ke;
const ki = ke.private;
extern const __interrupt_vectors: [256]usize;
@@ -43,17 +45,35 @@ const exception_msg = [32][]const u8{
export fn isr_handler_main(frame: *const amd64.IrqFrame) callconv(.{ .x86_64_sysv = .{} }) void {
if (frame.intno < 32) {
std.log.info("Unhandled exception: 0x{x} ({s}), err=0x{x}, pc=0x{x}", .{ frame.intno, exception_msg[frame.intno], frame.errcode, frame.rip });
std.log.info("RAX=0x{x:0>16} RBX=0x{x:0>16} RCX=0x{x:0>16} RDX=0x{x:0>16}", .{ frame.rax, frame.rbx, frame.rcx, frame.rdx });
std.log.info("RSI=0x{x:0>16} RDI=0x{x:0>16} RBP=0x{x:0>16} RSP=0x{x:0>16}", .{ frame.rsi, frame.rdi, frame.rbp, frame.rsp });
std.log.info("R8= 0x{x:0>16} R9=0x{x:0>16} R10=0x{x:0>16} R11=0x{x:0>16}", .{ frame.r8, frame.r9, frame.r10, frame.r11 });
std.log.info("R12=0x{x:0>16} R13=0x{x:0>16} R14=0x{x:0>16} R15=0x{x:0>16}", .{ frame.r12, frame.r13, frame.r14, frame.r15 });
std.log.err("Unhandled exception: 0x{x} ({s}), err=0x{x}, pc=0x{x}", .{ frame.intno, exception_msg[frame.intno], frame.errcode, frame.rip });
std.log.err("RAX=0x{x:0>16} RBX=0x{x:0>16} RCX=0x{x:0>16} RDX=0x{x:0>16}", .{ frame.rax, frame.rbx, frame.rcx, frame.rdx });
std.log.err("RSI=0x{x:0>16} RDI=0x{x:0>16} RBP=0x{x:0>16} RSP=0x{x:0>16}", .{ frame.rsi, frame.rdi, frame.rbp, frame.rsp });
std.log.err("R8= 0x{x:0>16} R9=0x{x:0>16} R10=0x{x:0>16} R11=0x{x:0>16}", .{ frame.r8, frame.r9, frame.r10, frame.r11 });
std.log.err("R12=0x{x:0>16} R13=0x{x:0>16} R14=0x{x:0>16} R15=0x{x:0>16}", .{ frame.r12, frame.r13, frame.r14, frame.r15 });
const cr2 = amd64.read_cr(2);
const cr3 = amd64.read_cr(3);
const rflags = amd64.rflags();
std.log.info("CR2=0x{x:0>16} CR3=0x{x:0>16} RFLAGS={x}", .{ cr2, cr3, @as(u64, @bitCast(rflags)) });
@panic("Unhandled exception");
var buf: [128]u8 = undefined;
var writer = std.Io.Writer.fixed(&buf);
writer.print("0x{x:0>8} [", .{@as(u64, @bitCast(rflags))}) catch {};
if (rflags.carry) writer.writeAll(" CF") catch {};
if (rflags.parity) writer.writeAll(" PF") catch {};
if (rflags.auxiliary) writer.writeAll(" AF") catch {};
if (rflags.zero) writer.writeAll(" ZF") catch {};
if (rflags.sign) writer.writeAll(" SF") catch {};
if (rflags.trap) writer.writeAll(" TF") catch {};
if (rflags.interrupt_enable) writer.writeAll(" IF") catch {};
if (rflags.direction) writer.writeAll(" DF") catch {};
if (rflags.overflow) writer.writeAll(" OF") catch {};
if (rflags.resume_) writer.writeAll(" RF") catch {};
if (rflags.virtual_8086_mode) writer.writeAll(" VM") catch {};
writer.print(" IOPL={d}]", .{rflags.iopl}) catch {};
std.log.err("CR2=0x{x:0>16} CR3=0x{x:0>16} RFLAGS={s}", .{ cr2, cr3, buf[0..writer.end] });
ki.panic.panic_with_frame("Unhandled exception", frame.rbp);
}
}