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

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Alex Rønne Petersen 2025-10-21 05:28:16 +02:00
parent f6c06d7069
commit 3777d3c25b
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1 changed files with 12 additions and 0 deletions
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lib/std/Thread.zig
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@ -1283,6 +1283,18 @@ const LinuxThreadImpl = struct {
: [ptr] "r" (@intFromPtr(self.mapped.ptr)),
[len] "r" (self.mapped.len),
: .{ .memory = true }),
.microblaze, .microblazeel => asm volatile (
\\ ori r12, r0, 91 # SYS_munmap
\\ ori r5, %[ptr], 0
\\ ori r6, %[len], 0
\\ brki r14, 0x8
\\ ori r12, r0, 1 # SYS_exit
\\ or r5, r0, r0
\\ brki r14, 0x8
:
: [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
// kernel bug that caused syscalls to return EFAULT if the stack pointer is invalid.
// The bug was introduced in 46e12c07b3b9603c60fc1d421ff18618241cb081 and fixed in