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std.Thread: implement freeAndExit() for m68k-linux

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Alex Rønne Petersen 2025-10-20 17:59:00 +02:00
parent f723d69a58
commit 3d1b7811d4
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12
lib/std/Thread.zig
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@ -1247,6 +1247,18 @@ const LinuxThreadImpl = struct {
: [ptr] "r" (@intFromPtr(self.mapped.ptr)), : [ptr] "r" (@intFromPtr(self.mapped.ptr)),
[len] "r" (self.mapped.len), [len] "r" (self.mapped.len),
: .{ .memory = true }), : .{ .memory = true }),
.m68k => asm volatile (
\\ move.l #91, %%d0 // SYS_munmap
\\ move.l %[ptr], %%d1
\\ move.l %[len], %%d2
\\ trap #0
\\ move.l #1, %%d0 // SYS_exit
\\ move.l #0, %%d1
\\ trap #0
:
: [ptr] "r" (@intFromPtr(self.mapped.ptr)),
[len] "r" (self.mapped.len),
: .{ .memory = true }),
// We set `sp` to the address of the current function as a workaround for a Linux // We set `sp` to the address of the current function as a workaround for a Linux
// kernel bug that caused syscalls to return EFAULT if the stack pointer is invalid. // kernel bug that caused syscalls to return EFAULT if the stack pointer is invalid.
// The bug was introduced in 46e12c07b3b9603c60fc1d421ff18618241cb081 and fixed in // The bug was introduced in 46e12c07b3b9603c60fc1d421ff18618241cb081 and fixed in