Editando: asm_loong64.s
// Copyright 2022 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "textflag.h" #include "funcdata.h" #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),$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), 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),$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), 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
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