From a9b7df4ca238bbf773a08c4c2c29ec15a4bc79bb Mon Sep 17 00:00:00 2001
From: Stephen Gregoratto <dev@sgregoratto.me>
Date: Fri, 20 Feb 2026 12:34:29 +1100
Subject: [PATCH] Linux: Map Alpha `getx*id` to their regularly named versions

These syscalls also store the value of `euid/egid/ppid` in `r20`, but
are otherwise the same.
---
 lib/std/os/linux.zig              | 5 +----
 lib/std/os/linux/syscalls.zig     | 6 +++---
 tools/generate_linux_syscalls.zig | 5 +++++
 3 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 1b07a0d136..33c7b325ce 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -2266,10 +2266,7 @@ pub fn getsid(pid: pid_t) usize {
 
 pub fn getpid() pid_t {
     // Casts result to a pid_t, safety-checking >= 0, because getpid() cannot fail
-    return @intCast(@as(u32, @truncate(syscall0(comptime switch (native_arch) {
-        .alpha => .getxpid,
-        else => .getpid,
-    }))));
+    return @intCast(@as(u32, @truncate(syscall0(.getpid))));
 }
 
 pub fn getppid() pid_t {
diff --git a/lib/std/os/linux/syscalls.zig b/lib/std/os/linux/syscalls.zig
index 7b1bde6841..2bf58d4d09 100644
--- a/lib/std/os/linux/syscalls.zig
+++ b/lib/std/os/linux/syscalls.zig
@@ -5872,11 +5872,11 @@ pub const Alpha = enum(usize) {
     brk = 17,
     osf_getfsstat = 18,
     lseek = 19,
-    getxpid = 20,
+    getpid = 20,
     osf_mount = 21,
     umount2 = 22,
     setuid = 23,
-    getxuid = 24,
+    getuid = 24,
     exec_with_loader = 25,
     ptrace = 26,
     osf_nrecvmsg = 27,
@@ -5899,7 +5899,7 @@ pub const Alpha = enum(usize) {
     osf_profil = 44,
     open = 45,
     osf_old_sigaction = 46,
-    getxgid = 47,
+    getgid = 47,
     osf_sigprocmask = 48,
     osf_getlogin = 49,
     osf_setlogin = 50,
diff --git a/tools/generate_linux_syscalls.zig b/tools/generate_linux_syscalls.zig
index 5c53c970af..d612138eb2 100644
--- a/tools/generate_linux_syscalls.zig
+++ b/tools/generate_linux_syscalls.zig
@@ -28,6 +28,11 @@ const stdlib_renames = std.StaticStringMap([]const u8).initComptime(.{
     // ARM EABI/Thumb.
     .{ "arm_sync_file_range", "sync_file_range" },
     .{ "arm_fadvise64_64", "fadvise64_64" },
+    // Alpha
+    // See https://github.com/torvalds/linux/blob/8bf22c33e7a172fbc72464f4cc484d23a6b412ba/arch/alpha/include/uapi/asm/unistd.h#L10
+    .{ "getxpid", "getpid" },
+    .{ "getxuid", "getuid" },
+    .{ "getxgid", "getgid" },
 });
 
 /// Filter syscalls that aren't actually syscalls.