From 5b6be626e29e7f25b30469dce2359ff76badb49d Mon Sep 17 00:00:00 2001
From: carlos <48725664+00xc@users.noreply.github.com>
Date: Thu, 10 Dec 2020 12:55:17 +0100
Subject: [PATCH 1/2] Add public API for PTRACE_GETFPREGS and PTRACE_SETFPREGS

---
 src/sys/ptrace/linux.rs | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/sys/ptrace/linux.rs b/src/sys/ptrace/linux.rs
index 8d1dd16e5d..d1199a27f0 100644
--- a/src/sys/ptrace/linux.rs
+++ b/src/sys/ptrace/linux.rs
@@ -16,7 +16,7 @@ pub type AddressType = *mut ::libc::c_void;
             any(target_env = "gnu", target_env = "musl")),
         all(target_arch = "x86", target_env = "gnu"))
 ))]
-use libc::user_regs_struct;
+use libc::{user_regs_struct, user_fpregs_struct};
 
 cfg_if! {
     if #[cfg(any(all(target_os = "linux", target_arch = "s390x"),
@@ -213,6 +213,34 @@ pub fn setregs(pid: Pid, regs: user_regs_struct) -> Result<()> {
     Errno::result(res).map(drop)
 }
 
+/// Get floating point registers, as with `ptrace(PTRACE_GETFPREGS, ...)`
+#[cfg(all(
+    target_os = "linux",
+    any(all(target_arch = "x86_64",
+            any(target_env = "gnu", target_env = "musl")),
+        all(target_arch = "x86", target_env = "gnu"))
+))]
+pub fn getfpregs(pid: Pid) -> Result<user_fpregs_struct> {
+    ptrace_get_data::<user_fpregs_struct>(Request::PTRACE_GETFPREGS, pid)
+}
+
+/// Set floating point registers, as with `ptrace(PTRACE_SETFPREGS)`
+#[cfg(all(
+    target_os = "linux",
+    any(all(target_arch = "x86_64",
+            any(target_env = "gnu", target_env = "musl")),
+        all(target_arch = "x86", target_env = "gnu"))
+))]
+pub fn setfpregs(pid: Pid, regs: user_fpregs_struct) -> Result<()> {
+    let res = unsafe {
+        libc::ptrace(Request::PTRACE_SETFPREGS as RequestType,
+                     libc::pid_t::from(pid),
+                     ptr::null_mut::<c_void>(),
+                     &regs as *const _ as *const c_void)
+    };
+    Errno::result(res).map(drop)
+}
+
 /// Function for ptrace requests that return values from the data field.
 /// Some ptrace get requests populate structs or larger elements than `c_long`
 /// and therefore use the data field to return values. This function handles these

From a39e598de06a5ae90edbb871fccd454c762b5b5c Mon Sep 17 00:00:00 2001
From: carlos <48725664+00xc@users.noreply.github.com>
Date: Thu, 10 Dec 2020 14:52:31 +0100
Subject: [PATCH 2/2] Updated changelog

---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a110f6500b..2f7692cde4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased] - ReleaseDate
 ### Added
 - Added `mremap` (#[1306](https://github.com/nix-rust/nix/pull/1306))
+- Added public API for the `PTRACE_GETFPREGS` and `PTRACE_SETFPREGS` requests.
+  (#[1356](https://github.com/nix-rust/nix/pull/1356))
 
 ### Fixed
 ### Changed