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std.Thread: Implement freeAndExit() for sparc32.

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Alex Rønne Petersen 2024-08-18 02:02:47 +02:00
parent 54e48f7b7d
commit d79e2822b0
1 changed files with 22 additions and 0 deletions
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22
lib/std/Thread.zig
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@ -1188,6 +1188,28 @@ const LinuxThreadImpl = struct {
[len] "r" (self.mapped.len),
: "memory"
),
.sparc => asm volatile (
\\ # See sparc64 comments below.
\\ 1:
\\ cmp %%fp, 0
\\ beq 2f
\\ nop
\\ ba 1b
\\ restore
\\ 2:
\\ mov 73, %%g1 # SYS_munmap
\\ mov %[ptr], %%o0
\\ mov %[len], %%o1
\\ t 0x3 # ST_FLUSH_WINDOWS
\\ t 0x10
\\ mov 1, %%g1 # SYS_exit
\\ mov 0, %%o0
\\ t 0x10
:
: [ptr] "r" (@intFromPtr(self.mapped.ptr)),
[len] "r" (self.mapped.len),
: "memory"
),
.sparc64 => asm volatile (
\\ # SPARCs really don't like it when active stack frames
\\ # is unmapped (it will result in a segfault), so we