From fe468e4fa3538ad4de7c890b4d971f74092d9f7b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sun, 28 Sep 2025 16:14:02 +0200
Subject: [PATCH] std.os.linux: delete restore and restore_rt for hexagon,
 loongarch, mips, riscv

---
 lib/std/os/linux/hexagon.zig     | 10 ----------
 lib/std/os/linux/loongarch64.zig | 11 -----------
 lib/std/os/linux/mips.zig        | 16 ----------------
 lib/std/os/linux/mips64.zig      | 16 ----------------
 lib/std/os/linux/riscv32.zig     | 10 ----------
 lib/std/os/linux/riscv64.zig     | 10 ----------
 6 files changed, 73 deletions(-)

diff --git a/lib/std/os/linux/hexagon.zig b/lib/std/os/linux/hexagon.zig
index 0568173cdf..255faba20f 100644
--- a/lib/std/os/linux/hexagon.zig
+++ b/lib/std/os/linux/hexagon.zig
@@ -128,16 +128,6 @@ pub fn clone() callconv(.naked) usize {
     );
 }
 
-pub const restore = restore_rt;
-
-pub fn restore_rt() callconv(.naked) noreturn {
-    asm volatile (
-        \\ trap0(#0)
-        :
-        : [number] "{r6}" (@intFromEnum(SYS.rt_sigreturn)),
-    );
-}
-
 pub const F = struct {
     pub const DUPFD = 0;
     pub const GETFD = 1;
diff --git a/lib/std/os/linux/loongarch64.zig b/lib/std/os/linux/loongarch64.zig
index 5a237739bb..b6ff38fccd 100644
--- a/lib/std/os/linux/loongarch64.zig
+++ b/lib/std/os/linux/loongarch64.zig
@@ -135,17 +135,6 @@ pub fn clone() callconv(.naked) usize {
     );
 }
 
-pub const restore = restore_rt;
-
-pub fn restore_rt() callconv(.naked) noreturn {
-    asm volatile (
-        \\ or $a7, $zero, %[number]
-        \\ syscall 0
-        :
-        : [number] "r" (@intFromEnum(SYS.rt_sigreturn)),
-    );
-}
-
 pub const msghdr = extern struct {
     name: ?*sockaddr,
     namelen: socklen_t,
diff --git a/lib/std/os/linux/mips.zig b/lib/std/os/linux/mips.zig
index 0958cf5a4b..c971bbd739 100644
--- a/lib/std/os/linux/mips.zig
+++ b/lib/std/os/linux/mips.zig
@@ -241,22 +241,6 @@ pub fn clone() callconv(.naked) usize {
     );
 }
 
-pub fn restore() callconv(.naked) noreturn {
-    asm volatile (
-        \\ syscall
-        :
-        : [number] "{$2}" (@intFromEnum(SYS.sigreturn)),
-        : .{ .r1 = true, .r3 = true, .r4 = true, .r5 = true, .r6 = true, .r7 = true, .r8 = true, .r9 = true, .r10 = true, .r11 = true, .r12 = true, .r13 = true, .r14 = true, .r15 = true, .r24 = true, .r25 = true, .hi = true, .lo = true, .memory = true });
-}
-
-pub fn restore_rt() callconv(.naked) noreturn {
-    asm volatile (
-        \\ syscall
-        :
-        : [number] "{$2}" (@intFromEnum(SYS.rt_sigreturn)),
-    );
-}
-
 pub const F = struct {
     pub const DUPFD = 0;
     pub const GETFD = 1;
diff --git a/lib/std/os/linux/mips64.zig b/lib/std/os/linux/mips64.zig
index bb05e26531..91fcacef38 100644
--- a/lib/std/os/linux/mips64.zig
+++ b/lib/std/os/linux/mips64.zig
@@ -220,22 +220,6 @@ pub fn clone() callconv(.naked) usize {
     );
 }
 
-pub fn restore() callconv(.naked) noreturn {
-    asm volatile (
-        \\ syscall
-        :
-        : [number] "{$2}" (@intFromEnum(SYS.rt_sigreturn)),
-        : .{ .r1 = true, .r3 = true, .r4 = true, .r5 = true, .r6 = true, .r7 = true, .r8 = true, .r9 = true, .r10 = true, .r11 = true, .r12 = true, .r13 = true, .r14 = true, .r15 = true, .r24 = true, .r25 = true, .hi = true, .lo = true, .memory = true });
-}
-
-pub fn restore_rt() callconv(.naked) noreturn {
-    asm volatile (
-        \\ syscall
-        :
-        : [number] "{$2}" (@intFromEnum(SYS.rt_sigreturn)),
-    );
-}
-
 pub const F = struct {
     pub const DUPFD = 0;
     pub const GETFD = 1;
diff --git a/lib/std/os/linux/riscv32.zig b/lib/std/os/linux/riscv32.zig
index c86882ad6c..01b6002135 100644
--- a/lib/std/os/linux/riscv32.zig
+++ b/lib/std/os/linux/riscv32.zig
@@ -135,16 +135,6 @@ pub fn clone() callconv(.naked) usize {
     );
 }
 
-pub const restore = restore_rt;
-
-pub fn restore_rt() callconv(.naked) noreturn {
-    asm volatile (
-        \\ ecall
-        :
-        : [number] "{x17}" (@intFromEnum(SYS.rt_sigreturn)),
-    );
-}
-
 pub const F = struct {
     pub const DUPFD = 0;
     pub const GETFD = 1;
diff --git a/lib/std/os/linux/riscv64.zig b/lib/std/os/linux/riscv64.zig
index 028a1b2fbd..577cf3ec48 100644
--- a/lib/std/os/linux/riscv64.zig
+++ b/lib/std/os/linux/riscv64.zig
@@ -135,16 +135,6 @@ pub fn clone() callconv(.naked) usize {
     );
 }
 
-pub const restore = restore_rt;
-
-pub fn restore_rt() callconv(.naked) noreturn {
-    asm volatile (
-        \\ ecall
-        :
-        : [number] "{x17}" (@intFromEnum(SYS.rt_sigreturn)),
-    );
-}
-
 pub const F = struct {
     pub const DUPFD = 0;
     pub const GETFD = 1;