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// Copyright 2010 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 "zasm_GOOS_GOARCH.h"
// setldt(int entry, int address, int limit)
TEXT runtime·setldt(SB),7,$0
RET
TEXT runtime·open(SB),7,$0
MOVL $14, AX
INT $64
RET
TEXT runtime·pread(SB),7,$0
MOVL $50, AX
INT $64
RET
TEXT runtime·pwrite(SB),7,$0
MOVL $51, AX
INT $64
RET
TEXT runtime·seek(SB),7,$0
MOVL $39, AX
INT $64
CMPL AX, $-1
JNE 4(PC)
MOVL a+0(FP), CX
MOVL AX, 0(CX)
MOVL AX, 4(CX)
RET
TEXT runtime·close(SB),7,$0
MOVL $4, AX
INT $64
RET
TEXT runtime·exits(SB),7,$0
MOVL $8, AX
INT $64
RET
TEXT runtime·brk_(SB),7,$0
MOVL $24, AX
INT $64
RET
TEXT runtime·sleep(SB),7,$0
MOVL $17, AX
INT $64
RET
TEXT runtime·plan9_semacquire(SB),7,$0
MOVL $37, AX
INT $64
RET
TEXT runtime·plan9_tsemacquire(SB),7,$0
MOVL $52, AX
INT $64
RET
TEXT runtime·notify(SB),7,$0
MOVL $28, AX
INT $64
RET
TEXT runtime·noted(SB),7,$0
MOVL $29, AX
INT $64
RET
TEXT runtime·plan9_semrelease(SB),7,$0
MOVL $38, AX
INT $64
RET
TEXT runtime·rfork(SB),7,$0
MOVL $19, AX // rfork
INT $64
// In parent, return.
CMPL AX, $0
JEQ 2(PC)
RET
// In child on old stack.
MOVL mm+12(SP), BX // m
MOVL gg+16(SP), DX // g
MOVL fn+20(SP), SI // fn
// set SP to be on the new child stack
MOVL stack+8(SP), CX
MOVL CX, SP
// Initialize m, g.
get_tls(AX)
MOVL DX, g(AX)
MOVL BX, m(AX)
// Initialize AX from TOS struct.
MOVL procid(AX), AX
MOVL AX, m_procid(BX) // save pid as m->procid
CALL runtime·stackcheck(SB) // smashes AX, CX
MOVL 0(DX), DX // paranoia; check they are not nil
MOVL 0(BX), BX
// more paranoia; check that stack splitting code works
PUSHL SI
CALL runtime·emptyfunc(SB)
POPL SI
CALL SI // fn()
CALL runtime·exit(SB)
RET
// void sigtramp(void *ureg, int8 *note)
TEXT runtime·sigtramp(SB),7,$0
get_tls(AX)
// check that m exists
MOVL m(AX), BX
CMPL BX, $0
JNE 3(PC)
CALL runtime·badsignal(SB) // will exit
RET
// save args
MOVL ureg+4(SP), CX
MOVL note+8(SP), DX
// change stack
MOVL m_gsignal(BX), BP
MOVL g_stackbase(BP), BP
MOVL BP, SP
// make room for args and g
SUBL $16, SP
// save g
MOVL g(AX), BP
MOVL BP, 12(SP)
// g = m->gsignal
MOVL m_gsignal(BX), DI
MOVL DI, g(AX)
// load args and call sighandler
MOVL CX, 0(SP)
MOVL DX, 4(SP)
MOVL BP, 8(SP)
CALL runtime·sighandler(SB)
// restore g
get_tls(BX)
MOVL 12(SP), BP
MOVL BP, g(BX)
// call noted(AX)
MOVL AX, 0(SP)
CALL runtime·noted(SB)
RET
// Only used by the 64-bit runtime.
TEXT runtime·setfpmasks(SB),7,$0
RET
#define ERRMAX 128 /* from os_plan9.h */
// func errstr() String
// Only used by package syscall.
// Grab error string due to a syscall made
// in entersyscall mode, without going
// through the allocator (issue 4994).
// See ../syscall/asm_plan9_386.s:/·Syscall/
TEXT runtime·errstr(SB),7,$0
get_tls(AX)
MOVL m(AX), BX
MOVL m_errstr(BX), CX
MOVL CX, 4(SP)
MOVL $ERRMAX, 8(SP)
MOVL $41, AX
INT $64
// syscall requires caller-save
MOVL 4(SP), CX
// push the argument
PUSHL CX
CALL runtime·findnull(SB)
POPL CX
MOVL AX, 8(SP)
RET
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