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platform support: add SNaN erratum to MIPS targets #157288

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rust-bors merged 1 commit into from
Jun 11, 2026
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platform support: add SNaN erratum to MIPS targets #157288

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38 changes: 21 additions & 17 deletions src/doc/rustc/src/platform-support.md
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Original file line number Diff line number Diff line change
Expand Up @@ -347,23 +347,23 @@ target | std | host | notes
[`loongarch32-unknown-none-softfloat`](platform-support/loongarch-none.md) | * | | LoongArch32 Bare-metal (ILP32S ABI)
[`m68k-unknown-linux-gnu`](platform-support/m68k-unknown-linux-gnu.md) | ? | | Motorola 680x0 Linux
[`m68k-unknown-none-elf`](platform-support/m68k-unknown-none-elf.md) | | | Motorola 680x0
`mips-unknown-linux-gnu` | ✓ | ✓ | MIPS Linux (kernel 4.4, glibc 2.23)
`mips-unknown-linux-musl` | ✓ | | MIPS Linux with musl 1.2.5
`mips-unknown-linux-uclibc` | ✓ | | MIPS Linux with uClibc
[`mips64-openwrt-linux-musl`](platform-support/mips64-openwrt-linux-musl.md) | ? | | MIPS64 for OpenWrt Linux musl 1.2.5
`mips64-unknown-linux-gnuabi64` | ✓ | ✓ | MIPS64 Linux, N64 ABI (kernel 4.4, glibc 2.23)
[`mips64-unknown-linux-muslabi64`](platform-support/mips64-unknown-linux-muslabi64.md) | ✓ | ✓ | MIPS64 Linux, N64 ABI, musl 1.2.5
`mips64el-unknown-linux-gnuabi64` | ✓ | ✓ | MIPS64 (little endian) Linux, N64 ABI (kernel 4.4, glibc 2.23)
`mips64el-unknown-linux-muslabi64` | ✓ | | MIPS64 (little endian) Linux, N64 ABI, musl 1.2.5
`mipsel-sony-psp` | * | | MIPS (LE) Sony PlayStation Portable (PSP)
[`mipsel-sony-psx`](platform-support/mipsel-sony-psx.md) | * | | MIPS (LE) Sony PlayStation 1 (PSX)
[`mipsel-unknown-linux-gnu`](platform-support/mipsel-unknown-linux-gnu.md) | ✓ | ✓ | MIPS (little endian) Linux (kernel 4.4, glibc 2.23)
`mipsel-unknown-linux-musl` | ✓ | | MIPS (little endian) Linux with musl 1.2.5
`mipsel-unknown-linux-uclibc` | ✓ | | MIPS (LE) Linux with uClibc
[`mipsel-unknown-netbsd`](platform-support/netbsd.md) | ✓ | ✓ | 32-bit MIPS (LE), requires mips32 cpu support
`mipsel-unknown-none` | * | | Bare MIPS (LE) softfloat
[`mips-mti-none-elf`](platform-support/mips-mti-none-elf.md) | * | | Bare MIPS32r2 (BE) softfloat
[`mipsel-mti-none-elf`](platform-support/mips-mti-none-elf.md) | * | | Bare MIPS32r2 (LE) softfloat
`mips-unknown-linux-gnu` | ✓ | ✓ | MIPS Linux (kernel 4.4, glibc 2.23) [^snan-inverted]
`mips-unknown-linux-musl` | ✓ | | MIPS Linux with musl 1.2.5 [^snan-inverted]
`mips-unknown-linux-uclibc` | ✓ | | MIPS Linux with uClibc [^snan-inverted]
[`mips64-openwrt-linux-musl`](platform-support/mips64-openwrt-linux-musl.md) | ? | | MIPS64 for OpenWrt Linux musl 1.2.5 [^snan-inverted]
`mips64-unknown-linux-gnuabi64` | ✓ | ✓ | MIPS64 Linux, N64 ABI (kernel 4.4, glibc 2.23) [^snan-inverted]
[`mips64-unknown-linux-muslabi64`](platform-support/mips64-unknown-linux-muslabi64.md) | ✓ | ✓ | MIPS64 Linux, N64 ABI, musl 1.2.5 [^snan-inverted]
`mips64el-unknown-linux-gnuabi64` | ✓ | ✓ | MIPS64 (little endian) Linux, N64 ABI (kernel 4.4, glibc 2.23) [^snan-inverted]
`mips64el-unknown-linux-muslabi64` | ✓ | | MIPS64 (little endian) Linux, N64 ABI, musl 1.2.5 [^snan-inverted]
`mipsel-sony-psp` | * | | MIPS (LE) Sony PlayStation Portable (PSP) [^snan-inverted]
[`mipsel-sony-psx`](platform-support/mipsel-sony-psx.md) | * | | MIPS (LE) Sony PlayStation 1 (PSX) [^snan-inverted]
[`mipsel-unknown-linux-gnu`](platform-support/mipsel-unknown-linux-gnu.md) | ✓ | ✓ | MIPS (little endian) Linux (kernel 4.4, glibc 2.23) [^snan-inverted]
`mipsel-unknown-linux-musl` | ✓ | | MIPS (little endian) Linux with musl 1.2.5 [^snan-inverted]
`mipsel-unknown-linux-uclibc` | ✓ | | MIPS (LE) Linux with uClibc [^snan-inverted]
[`mipsel-unknown-netbsd`](platform-support/netbsd.md) | ✓ | ✓ | 32-bit MIPS (LE), requires mips32 cpu support [^snan-inverted]
`mipsel-unknown-none` | * | | Bare MIPS (LE) softfloat [^snan-inverted]
[`mips-mti-none-elf`](platform-support/mips-mti-none-elf.md) | * | | Bare MIPS32r2 (BE) softfloat [^snan-inverted]
[`mipsel-mti-none-elf`](platform-support/mips-mti-none-elf.md) | * | | Bare MIPS32r2 (LE) softfloat [^snan-inverted]
[`mipsisa32r6-unknown-linux-gnu`](platform-support/mips-release-6.md) | ? | | 32-bit MIPS Release 6 Big Endian
[`mipsisa32r6el-unknown-linux-gnu`](platform-support/mips-release-6.md) | ? | | 32-bit MIPS Release 6 Little Endian
[`mipsisa64r6-unknown-linux-gnuabi64`](platform-support/mips-release-6.md) | ? | | 64-bit MIPS Release 6 Big Endian
Expand Down Expand Up @@ -472,3 +472,7 @@ target | std | host | notes

[runs on NVIDIA GPUs]: https://github.com/japaric-archived/nvptx#targets
[the AMD GPU]: https://llvm.org/docs/AMDGPUUsage.html#processors

[^snan-inverted]: On these targets, the treatment of floating-point NaN values is non-compliant. The bit representation for signaling NaNs is inverted compared to [what Rust expects](../std/primitive.f32.html). This means that operations that are expected to return a quiet NaN may return a signaling NaN. See [issue #68925][snan-issue].

[snan-issue]: https://github.com/rust-lang/rust/issues/68925
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