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| author | zhaixiaojuan <zhaixiaojuan@loongson.cn> | 2022-08-19 17:41:56 +0800 |
|---|---|---|
| committer | WANG Rui <wangrui@loongson.cn> | 2023-04-25 14:15:31 +0800 |
| commit | 5f2fa4c11de4f4377cdaa00dea5c586c30ccde67 (patch) | |
| tree | e0420385e7953d4c6fca3765ba8dbae3921865ef /src | |
| parent | f6830a212973ced91a047cee86cb79cee4f23868 (diff) | |
| download | rust-5f2fa4c11de4f4377cdaa00dea5c586c30ccde67.tar.gz rust-5f2fa4c11de4f4377cdaa00dea5c586c30ccde67.zip | |
Add loongarch64 asm! support
Diffstat (limited to 'src')
| -rw-r--r-- | src/doc/unstable-book/src/language-features/asm-experimental-arch.md | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/doc/unstable-book/src/language-features/asm-experimental-arch.md b/src/doc/unstable-book/src/language-features/asm-experimental-arch.md index 1f52ab75010..1874baa0c38 100644 --- a/src/doc/unstable-book/src/language-features/asm-experimental-arch.md +++ b/src/doc/unstable-book/src/language-features/asm-experimental-arch.md @@ -17,6 +17,7 @@ This feature tracks `asm!` and `global_asm!` support for the following architect - AVR - MSP430 - M68k +- LoongArch ## Register classes @@ -45,6 +46,8 @@ This feature tracks `asm!` and `global_asm!` support for the following architect | M68k | `reg` | `d[0-7]`, `a[0-7]` | `r` | | M68k | `reg_data` | `d[0-7]` | `d` | | M68k | `reg_addr` | `a[0-3]` | `a` | +| LoongArch | `reg` | `$r1`, `$r[4-20]`, `$r[23,30]` | `r` | +| LoongArch | `freg` | `$f[0-31]` | `f` | > **Notes**: > - NVPTX doesn't have a fixed register set, so named registers are not supported. @@ -76,6 +79,8 @@ This feature tracks `asm!` and `global_asm!` support for the following architect | MSP430 | `reg` | None | `i8`, `i16` | | M68k | `reg`, `reg_addr` | None | `i16`, `i32` | | M68k | `reg_data` | None | `i8`, `i16`, `i32` | +| LoongArch64 | `reg` | None | `i8`, `i16`, `i32`, `i64`, `f32`, `f64` | +| LoongArch64 | `freg` | None | `f32`, `f64` | ## Register aliases @@ -97,6 +102,10 @@ This feature tracks `asm!` and `global_asm!` support for the following architect | M68k | `a5` | `bp` | | M68k | `a6` | `fp` | | M68k | `a7` | `sp`, `usp`, `ssp`, `isp` | +| LoongArch | `$r0` | `zero` | +| LoongArch | `$r2` | `tp` | +| LoongArch | `$r3` | `sp` | +| LoongArch | `$r22` | `fp` | > **Notes**: > - TI does not mandate a frame pointer for MSP430, but toolchains are allowed @@ -107,7 +116,7 @@ This feature tracks `asm!` and `global_asm!` support for the following architect | Architecture | Unsupported register | Reason | | ------------ | --------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | All | `sp` | The stack pointer must be restored to its original value at the end of an asm code block. | -| All | `fr` (Hexagon), `$fp` (MIPS), `Y` (AVR), `r4` (MSP430), `a6` (M68k) | The frame pointer cannot be used as an input or output. | +| All | `fr` (Hexagon), `$fp` (MIPS), `Y` (AVR), `r4` (MSP430), `a6` (M68k), `$fp` (LoongArch) | The frame pointer cannot be used as an input or output. | | All | `r19` (Hexagon) | This is used internally by LLVM as a "base pointer" for functions with complex stack frames. | | MIPS | `$0` or `$zero` | This is a constant zero register which can't be modified. | | MIPS | `$1` or `$at` | Reserved for assembler. | @@ -118,6 +127,10 @@ This feature tracks `asm!` and `global_asm!` support for the following architect | AVR | `r0`, `r1`, `r1r0` | Due to an issue in LLVM, the `r0` and `r1` registers cannot be used as inputs or outputs. If modified, they must be restored to their original values before the end of the block. | |MSP430 | `r0`, `r2`, `r3` | These are the program counter, status register, and constant generator respectively. Neither the status register nor constant generator can be written to. | | M68k | `a4`, `a5` | Used internally by LLVM for the base pointer and global base pointer. | +| LoongArch | `$r0` or `$zero` | This is a constant zero register which can't be modified. | +| LoongArch | `$r2` or `$tp` | This is reserved for TLS. | +| LoongArch | `$r21` | This is reserved by the ABI. | +| LoongArch | `$r31` or `$s8` | This is used internally by LLVM. | ## Template modifiers @@ -132,6 +145,8 @@ This feature tracks `asm!` and `global_asm!` support for the following architect | PowerPC | `reg` | None | `0` | None | | PowerPC | `reg_nonzero` | None | `3` | `b` | | PowerPC | `freg` | None | `0` | None | +| LoongArch | `reg` | None | `$r2` | None | +| LoongArch | `freg` | None | `$f0` | None | # Flags covered by `preserves_flags` |