Merge #1596

1596: Add more implementations for TARGET_RUST_OS_INFO r=philberty a=ibuclaw

Pretty much all follow the same template as how darwin was added in the first commit, so mostly uninteresting.

The only slight deviation is with `*-*-linux*`, where rather than putting it in a common `glibc-rust.cc` file, I've instead opted to force each platform have their own source file. So Linux gets a `linux-rust.cc` file, and anyone who wants to add Hurd, kFreeBSD, or kOpenSolaris later can do so by adding a case to this switch with the appropriately named file (i.e: `gnu-rust.cc` for Hurd).

The same can also be said for MinGW targets - `winnt-rust.cc` is explicitly _not_ set for Cygwin, and I'd prefer that whoever does add Cygwin support will create a separate file for it - otherwise you've either got to modify the target headers to add whatever defines you need in order to abstract the two away, or start adding some defines to `tm_rust.h` to expose hints about the target known at configure time.

Linux is also the only implementation that has an `#ifndef` condition, as not all Linux targets include `linux-android.{h,opt}`.

Checked dumps of target_options on a plethora of target configurations, though this list is by no means exhaustive.

---

<details>
  <summary>i686-dragonflybsd</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "dragonfly"
target_family: "unix"
target_arch: "x86"
```
</details>
<details>
  <summary>x86_64-dragonflybsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "dragonfly"
target_family: "unix"
target_feature: "fxsr"
target_feature: "sse"
target_feature: "sse2"
target_feature: "mmx"
target_arch: "x86_64"
```
</details>
<details>
  <summary>aarch64-freebsd12, ia64-freebsd6, riscv64-freebsd12</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "freebsd"
target_family: "unix"
```
</details>
<details>
  <summary>arm-freebsd12</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "freebsd"
target_family: "unix"
```
</details>
<details>
  <summary>i486-freebsd4, i686-freebsd6</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "freebsd"
target_family: "unix"
target_arch: "x86"
```
</details>
<details>
  <summary>powerpc-freebsd6</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "big"
target_os: "freebsd"
target_family: "unix"
```
</details>
<details>
  <summary>sparc64-freebsd6</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "big"
target_os: "freebsd"
target_family: "unix"
```
</details>
<details>
  <summary>x86_64-freebsd6</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "freebsd"
target_family: "unix"
target_feature: "fxsr"
target_feature: "sse"
target_feature: "sse2"
target_feature: "mmx"
target_arch: "x86_64"
```
</details>
<details>
  <summary>aarch64-fuchsia</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "fushsia"
target_family: "unix"
```
</details>
<details>
  <summary>x86_64-fuchsia</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "fushsia"
target_family: "unix"
target_feature: "fxsr"
target_feature: "sse"
target_feature: "sse2"
target_feature: "mmx"
target_arch: "x86_64"
```
</details>
<details>
  <summary>i686-kfreebsd-gnu</summary>

```
target_endian: "little"
target_pointer_width: "32"
target_arch: "x86"
```
</details> 
<details>
  <summary>arm-linux-androideabi</summary>

```
target_pointer_width: "32"
target_env: ""
target_endian: "little"
target_os: "android"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>aarch64-linux-gnu, alpha-linux-gnu, ia64-linux, riscv64-unknown-linux-gnu</summary>

```
target_pointer_width: "64"
target_env: "gnu"
target_endian: "little"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>am33_2.0-linux-gnu, csky-linux-gnu, mips64el-st-linux-gnu, nios2-linux-gnu, powerpcle-linux, riscv32-unknown-linux-gnu, rx-linux, shle-linux, vax-linux-gnu</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_endian: "little"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>arc-linux-uclibc, bfin-linux-uclibc</summary>

```
target_pointer_width: "32"
target_env: "uclibc"
target_endian: "little"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>arceb-linux-uclibc, or1k-linux-uclibc</summary>

```
target_pointer_width: "32"
target_env: "uclibc"
target_endian: "big"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>frv-linux, h8300-linux, hppa-linux-gnu, m68k-linux, microblaze-linux, mips64octeon-linux, mipsisa32r2-linux-gnu, mipsisa64r2-linux, mips-linux, mips-mti-linux, powerpc64-linux_altivec, powerpc-linux, s390-linux-gnu, sparc-leon3-linux-gnu, sparc-linux-gnu, xtensa-linux</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_endian: "big"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>hppa64-linux-gnu, s390x-linux-gnu, sparc64-linux</summary>

```
target_pointer_width: "64"
target_env: "gnu"
target_endian: "big"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>i686-pc-linux-gnu, i686-pc-linux</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_endian: "little"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
target_arch: "x86"
```
</details>
<details>
  <summary>or1k-linux-musl</summary>

```
target_pointer_width: "32"
target_env: "musl"
target_endian: "big"
target_os: "linux"
target_vendor: "unknown"
target_family: "unix"
```
</details>
<details>
  <summary>i686-mingw32crt</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_vendor: "pc"
target_endian: "little"
target_os: "windows"
target_family: "windows"
target_arch: "x86"
```
</details>
<details>
  <summary>x86_64-mingw32, x86_64-w64-mingw32</summary>

```
target_pointer_width: "64"
target_env: "gnu"
target_vendor: "pc"
target_endian: "little"
target_os: "windows"
target_family: "windows"
target_feature: "fxsr"
target_feature: "sse"
target_feature: "sse2"
target_feature: "mmx"
target_arch: "x86_64"
```
</details>
<details>
  <summary>aarch64-netbsd, alpha-netbsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "netbsd"
target_family: "unix"
```
</details>
<details>
  <summary>arm-netbsdelf, vax-netbsdelf</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "netbsd"
target_family: "unix"
```
</details>
<details>
  <summary>hppa-netbsd, m68k-netbsdelf, mips-netbsd, powerpc-netbsd, sh-netbsdelf, sparc-netbsdelf</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "big"
target_os: "netbsd"
target_family: "unix"
```
</details>
<details>
  <summary>i686-netbsdelf9</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "netbsd"
target_family: "unix"
target_arch: "x86"
```
</details>
<details>
  <summary>sparc64-netbsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "big"
target_os: "netbsd"
target_family: "unix"
```
</details> 
<details>
  <summary>x86_64-netbsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "netbsd"
target_family: "unix"
target_feature: "fxsr"
target_feature: "sse"
target_feature: "sse2"
target_feature: "mmx"
target_arch: "x86_64"
```
</details>
<details>
  <summary>alpha-openbsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "openbsd"
target_family: "unix"
```
</details>
<details>
  <summary>bfin-openbsd</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "openbsd"
target_family: "unix"
```
</details>
<details>
  <summary>i686-openbsd</summary>

```
target_pointer_width: "32"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "openbsd"
target_family: "unix"
target_arch: "x86"
```
</details>
<details>
  <summary>sparc64-openbsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "big"
target_os: "openbsd"
target_family: "unix"
```
</details>
<details>
  <summary>x86_64-openbsd</summary>

```
target_pointer_width: "64"
target_env: ""
target_vendor: "unknown"
target_endian: "little"
target_os: "openbsd"
target_family: "unix"
target_feature: "fxsr"
target_feature: "sse"
target_feature: "sse2"
target_feature: "mmx"
target_arch: "x86_64"
```
</details>
<details>
  <summary>aarch64-wrs-vxworks</summary>

```
target_pointer_width: "64"
target_env: "gnu"
target_vendor: "wrs"
target_endian: "little"
target_os: "vxworks"
target_family: "unix"
```
</details>
<details>
  <summary>arm-wrs-vxworks7</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_vendor: "wrs"
target_endian: "little"
target_os: "vxworks"
target_family: "unix"
```
</details>

<details>
  <summary>i686-wrs-vxworks, i686-wrs-vxworksae</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_vendor: "wrs"
target_endian: "little"
target_os: "vxworks"
target_family: "unix"
target_arch: "x86"
```
</details>
<details>
  <summary>mips-wrs-vxworks, powerpc-wrs-vxworksae, powerpc-wrs-vxworks, powerpc-wrs-vxworksmils, sh-wrs-vxworks, sparc-wrs-vxworks</summary>

```
target_pointer_width: "32"
target_env: "gnu"
target_vendor: "wrs"
target_endian: "big"
target_os: "vxworks"
target_family: "unix"
```
</details>
<details>
  <summary>arm-uclinux_eabi, bfin-uclinux, c6x-uclinux</summary>

```
target_endian: "little"
target_pointer_width: "32"
```
</details>

<details>
  <summary>lm32-uclinux, m68k-uclinux, moxie-uclinux, xtensa-uclinux</summary>

```
target_endian: "big"
target_pointer_width: "32"
```
</details>

Co-authored-by: Iain Buclaw <ibuclaw@gdcproject.org>

0 files changed, 0 insertions, 0 deletions