Adds in SI and TRAP signal codes

Impacts linux and android adding in (when applicable):

* SI_ASYNCIO
* SI_ASYNCNL
* SI_DETHREAD
* SI_KERNEL
* SI_MESGQ
* SI_QUEUE
* SI_SIGIO
* SI_TIMER
* SI_TKILL
* SI_USER

And also:

* TRAP_BRANCH
* TRAP_BRKPT
* TRAP_HWBKPT
* TRAP_PERF
* TRAP_TRACE
* TRAP_UNK

(backport <rust-lang#4225>)
(cherry picked from commit a34697a)

Author: xd009642

libc-test/build.rs

@@ -3065,6 +3065,9 @@ fn test_emscripten(target: &str) {
             // https://github.com/emscripten-core/emscripten/pull/14883
             "SIG_IGN" => true,
 
+            // Constants present in other linuxes but not emscripten
+            "SI_DETHREAD" | "TRAP_PERF" => true,
+
             // LFS64 types have been removed in Emscripten 3.1.44
             // https://github.com/emscripten-core/emscripten/pull/19812
             n if n.starts_with("RLIM64") => true,
@@ -4130,6 +4133,9 @@ fn test_linux(target: &str) {
             // FIXME: Not currently available in headers on ARM and musl.
             "NETLINK_GET_STRICT_CHK" if arm => true,
 
+            // Skip as this signal codes and trap reasons need newer headers
+            "SI_DETHREAD" | "TRAP_PERF" => true,
+
             // kernel constants not available in uclibc 1.0.34
             | "EXTPROC"
             | "IPPROTO_BEETPH"

libc-test/semver/linux.txt

@@ -2879,7 +2879,17 @@ SIOCSMIIREG
 SIOCSRARP
 SIOCWANDEV
 SIOGIFINDEX
+SI_ASYNCIO
+SI_ASYNCNL
+SI_DETHREAD
+SI_KERNEL
 SI_LOAD_SHIFT
+SI_MESGQ
+SI_QUEUE
+SI_SIGIO
+SI_TIMER
+SI_TKILL
+SI_USER
 SND_CNT
 SND_MAX
 SOCK_CLOEXEC
@@ -3359,6 +3369,12 @@ TP_STATUS_USER
 TP_STATUS_VLAN_TPID_VALID
 TP_STATUS_VLAN_VALID
 TP_STATUS_WRONG_FORMAT
+TRAP_BRANCH
+TRAP_BRKPT
+TRAP_HWBKPT
+TRAP_PERF
+TRAP_TRACE
+TRAP_UNK
 TUNATTACHFILTER
 TUNDETACHFILTER
 TUNGETFEATURES

src/unix/linux_like/android/mod.rs

@@ -3568,6 +3568,10 @@ pub const AT_RSEQ_ALIGN: c_ulong = 28;
 pub const AT_EXECFN: c_ulong = 31;
 pub const AT_MINSIGSTKSZ: c_ulong = 51;
 
+// siginfo.h
+pub const SI_DETHREAD: c_int = -7;
+pub const TRAP_PERF: c_int = 6;
+
 // Most `*_SUPER_MAGIC` constants are defined at the `linux_like` level; the
 // following are only available on newer Linux versions than the versions
 // currently used in CI in some configurations, so we define them here.

src/unix/linux_like/linux/mod.rs

@@ -5725,6 +5725,10 @@ pub const EPIOCGPARAMS: Ioctl = 0x80088a02;
 const _IOC_NRBITS: u32 = 8;
 const _IOC_TYPEBITS: u32 = 8;
 
+// siginfo.h
+pub const SI_DETHREAD: c_int = -7;
+pub const TRAP_PERF: c_int = 6;
+
 // https://github.com/search?q=repo%3Atorvalds%2Flinux+%22%23define+_IOC_NONE%22&type=code
 cfg_if! {
     if #[cfg(any(

src/unix/linux_like/mod.rs

@@ -1289,6 +1289,17 @@ pub const PIPE_BUF: usize = 4096;
 
 pub const SI_LOAD_SHIFT: c_uint = 16;
 
+// si_code values
+pub const SI_USER: c_int = 0;
+pub const SI_KERNEL: c_int = 0x80;
+pub const SI_QUEUE: c_int = -1;
+pub const SI_TIMER: c_int = -2;
+pub const SI_MESGQ: c_int = -3;
+pub const SI_ASYNCIO: c_int = -4;
+pub const SI_SIGIO: c_int = -5;
+pub const SI_TKILL: c_int = -6;
+pub const SI_ASYNCNL: c_int = -60;
+
 // si_code values for SIGBUS signal
 pub const BUS_ADRALN: c_int = 1;
 pub const BUS_ADRERR: c_int = 2;
@@ -1297,6 +1308,13 @@ pub const BUS_OBJERR: c_int = 3;
 pub const BUS_MCEERR_AR: c_int = 4;
 pub const BUS_MCEERR_AO: c_int = 5;
 
+// si_code values for SIGTRAP
+pub const TRAP_BRKPT: c_int = 1;
+pub const TRAP_TRACE: c_int = 2;
+pub const TRAP_BRANCH: c_int = 3;
+pub const TRAP_HWBKPT: c_int = 4;
+pub const TRAP_UNK: c_int = 5;
+
 // si_code values for SIGCHLD signal
 pub const CLD_EXITED: c_int = 1;
 pub const CLD_KILLED: c_int = 2;