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asm_loong64.s
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asm_loong64.s
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// 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
MOVV REGCTXT, R4
MOVV R25, R5
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
MOVV REGCTXT, R4
MOVV R25, R5
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