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| author | Guoqi Chen <chenguoqi@loongson.cn> | 2023-08-16 08:28:28 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2023-11-21 19:04:25 +0000 |
| commit | 4e6bbbe61f554dbd9ed78fcd55ff46fe59736785 (patch) | |
| tree | fcd7d16c4e3684b727f86f1f4c92a0a86da8aff4 /src/reflect | |
| parent | f6f141ab80853b0b45f7e33aa148e497ceeb7d38 (diff) | |
| download | go-4e6bbbe61f554dbd9ed78fcd55ff46fe59736785.tar.gz go-4e6bbbe61f554dbd9ed78fcd55ff46fe59736785.zip | |
reflect, runtime: add reflect support for regABI on loong64
Update #40724
Co-authored-by: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Change-Id: I0549fd1a2192ffb041034ff41bf0cc4be0b1662c
Reviewed-on: https://go-review.googlesource.com/c/go/+/521784
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Diffstat (limited to 'src/reflect')
| -rw-r--r-- | src/reflect/asm_loong64.s | 77 |
1 files changed, 63 insertions, 14 deletions
diff --git a/src/reflect/asm_loong64.s b/src/reflect/asm_loong64.s index 341a6d55c1..520f0afdd5 100644 --- a/src/reflect/asm_loong64.s +++ b/src/reflect/asm_loong64.s @@ -7,34 +7,83 @@ #define REGCTXT R29 +// The frames of each of the two functions below contain two locals, at offsets +// that are known to the runtime. +// +// The first local is a bool called retValid with a whole pointer-word reserved +// for it on the stack. The purpose of this word is so that the runtime knows +// whether the stack-allocated return space contains valid values for stack +// scanning. +// +// The second local is an abi.RegArgs value whose offset is also known to the +// runtime, so that a stack map for it can be constructed, since it contains +// pointers visible to the GC. +#define LOCAL_RETVALID 40 +#define LOCAL_REGARGS 48 + +// The frame size of the functions below is +// 32 (args of callReflect) + 8 (bool + padding) + 392 (abi.RegArgs) = 432. + // makeFuncStub is the code half of the function returned by MakeFunc. // See the comment on the declaration of makeFuncStub in makefunc.go // for more details. // No arg size here, runtime pulls arg map out of the func value. -TEXT ·makeFuncStub(SB),(NOSPLIT|WRAPPER),$40 +TEXT ·makeFuncStub(SB),(NOSPLIT|WRAPPER),$432 NO_LOCAL_POINTERS + ADDV $LOCAL_REGARGS, R3, R25 // spillArgs using R25 + JAL runtime·spillArgs(SB) + MOVV REGCTXT, 32(R3) // save REGCTXT > args of moveMakeFuncArgPtrs < LOCAL_REGARGS + +#ifdef GOEXPERIMENT_regabiargs + MOVV REGCTXT, R4 + MOVV R25, R5 +#else MOVV REGCTXT, 8(R3) - MOVV $argframe+0(FP), R19 - MOVV R19, 16(R3) - MOVB R0, 40(R3) - ADDV $40, R3, R19 - MOVV R19, 24(R3) - MOVV R0, 32(R3) + MOVV R25, 16(R3) +#endif + JAL ·moveMakeFuncArgPtrs<ABIInternal>(SB) + MOVV 32(R3), REGCTXT // restore REGCTXT + + MOVV REGCTXT, 8(R3) + MOVV $argframe+0(FP), R20 + MOVV R20, 16(R3) + MOVV R0, LOCAL_RETVALID(R3) + ADDV $LOCAL_RETVALID, R3, R20 + MOVV R20, 24(R3) + ADDV $LOCAL_REGARGS, R3, R20 + MOVV R20, 32(R3) JAL ·callReflect(SB) + ADDV $LOCAL_REGARGS, R3, R25 //unspillArgs using R25 + JAL runtime·unspillArgs(SB) RET // methodValueCall is the code half of the function returned by makeMethodValue. // See the comment on the declaration of methodValueCall in makefunc.go // for more details. // No arg size here; runtime pulls arg map out of the func value. -TEXT ·methodValueCall(SB),(NOSPLIT|WRAPPER),$40 +TEXT ·methodValueCall(SB),(NOSPLIT|WRAPPER),$432 NO_LOCAL_POINTERS + ADDV $LOCAL_REGARGS, R3, R25 // spillArgs using R25 + JAL runtime·spillArgs(SB) + MOVV REGCTXT, 32(R3) // save REGCTXT > args of moveMakeFuncArgPtrs < LOCAL_REGARGS +#ifdef GOEXPERIMENT_regabiargs + MOVV REGCTXT, R4 + MOVV R25, R5 +#else + MOVV REGCTXT, 8(R3) + MOVV R25, 16(R3) +#endif + JAL ·moveMakeFuncArgPtrs<ABIInternal>(SB) + MOVV 32(R3), REGCTXT // restore REGCTXT MOVV REGCTXT, 8(R3) - MOVV $argframe+0(FP), R19 - MOVV R19, 16(R3) - MOVB R0, 40(R3) - ADDV $40, R3, R19 - MOVV R19, 24(R3) - MOVV R0, 32(R3) + MOVV $argframe+0(FP), R20 + MOVV R20, 16(R3) + MOVB R0, LOCAL_RETVALID(R3) + ADDV $LOCAL_RETVALID, R3, R20 + MOVV R20, 24(R3) + ADDV $LOCAL_REGARGS, R3, R20 + MOVV R20, 32(R3) // frame size to 32+SP as callreflect args) JAL ·callMethod(SB) + ADDV $LOCAL_REGARGS, R3, R25 // unspillArgs using R25 + JAL runtime·unspillArgs(SB) RET |