2 files changed, 134 insertions, 1 deletions
diff --git a/lib/std/os/linux/io_uring.zig b/lib/std/os/linux/io_uring.zig
index 6ffee12bfd..fc5af34696 100644
--- a/lib/std/os/linux/io_uring.zig
+++ b/lib/std/os/linux/io_uring.zig
@@ -1354,7 +1354,7 @@ test "timeout (after a relative time)" {
         .flags = 0,
     }, cqe);
 
-    // Tests should not depend on timings: skip test (result) if outside margin.
+    // Tests should not depend on timings: skip test if outside margin.
     if (!std.math.approxEqAbs(f64, ms, @intToFloat(f64, stopped - started), margin)) return error.SkipZigTest;
 }
 
diff --git a/lib/std/os/linux/powerpc.zig b/lib/std/os/linux/powerpc.zig
new file mode 100644
index 0000000000..567ad2bc1f
--- /dev/null
+++ b/lib/std/os/linux/powerpc.zig
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2015-2021 Zig Contributors
+// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
+// The MIT license requires this copyright notice to be included in all copies
+// and substantial portions of the software.
+
+usingnamespace @import("../bits.zig");
+
+pub fn syscall0(number: SYS) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number))
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall1(number: SYS, arg1: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall2(number: SYS, arg1: usize, arg2: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall3(number: SYS, arg1: usize, arg2: usize, arg3: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall4(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3),
+          [arg4] "{r6}" (arg4)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall5(number: SYS, arg1: usize, arg2: usize, arg3: usize, arg4: usize, arg5: usize) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3),
+          [arg4] "{r6}" (arg4),
+          [arg5] "{r7}" (arg5)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+pub fn syscall6(
+    number: SYS,
+    arg1: usize,
+    arg2: usize,
+    arg3: usize,
+    arg4: usize,
+    arg5: usize,
+    arg6: usize,
+) usize {
+    return asm volatile (
+        \\ sc
+        \\ bns+ 1f
+        \\ neg 3, 3
+        \\ 1:
+        : [ret] "={r3}" (-> usize)
+        : [number] "{r0}" (@enumToInt(number)),
+          [arg1] "{r3}" (arg1),
+          [arg2] "{r4}" (arg2),
+          [arg3] "{r5}" (arg3),
+          [arg4] "{r6}" (arg4),
+          [arg5] "{r7}" (arg5),
+          [arg6] "{r8}" (arg6)
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}
+
+/// This matches the libc clone function.
+pub extern fn clone(func: fn (arg: usize) callconv(.C) u8, stack: usize, flags: usize, arg: usize, ptid: *i32, tls: usize, ctid: *i32) usize;
+
+pub const restore = restore_rt;
+
+pub fn restore_rt() callconv(.Naked) void {
+    return asm volatile ("sc"
+        :
+        : [number] "{r0}" (@enumToInt(SYS.rt_sigreturn))
+        : "memory", "cr0", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+    );
+}