github.com/primecitizens/pcz/std@v0.2.1/core/stack/asm_386.s (about)

     1  // SPDX-License-Identifier: Apache-2.0
     2  // Copyright 2023 The Prime Citizens
     3  //
     4  // Copyright 2009 The Go Authors. All rights reserved.
     5  // Use of this source code is governed by a BSD-style
     6  // license that can be found in the LICENSE file.
     7  
     8  //go:build pcz && 386
     9  
    10  #include "textflag.h"
    11  
    12  TEXT ·GetSP(SB),NOSPLIT,$0-4
    13  	MOVL SP, AX
    14  	ADDL $8, AX
    15  	MOVL AX, sp+0(FP)
    16  	RET
    17  
    18  TEXT ·SetSP(SB),NOSPLIT,$4-4
    19  	NOP SP // tell vet SP changed - stop checking offsets
    20  	MOVL sp+0(FP), SP
    21  	RET
    22  
    23  // Called during function prolog when more stack is needed.
    24  //
    25  // The traceback routines see morestack on a g0 as being
    26  // the top of a stack (for example, morestack calling newstack
    27  // calling the scheduler calling newm calling gc), so we must
    28  // record an argument size. For that purpose, it has no arguments.
    29  TEXT runtime·morestack(SB),NOSPLIT,$0-0
    30  	// TODO: implement
    31  	INT $3 // crash
    32  loop:
    33  	JMP loop
    34  
    35  TEXT runtime·morestack_noctxt(SB),NOSPLIT|NOFRAME,$0-0
    36  	MOVL $0, DX
    37  	JMP runtime·morestack(SB)