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go/src/runtime/rt0_amd64_linux.s

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2008-06-05 17:54:34 -06:00
// Copyright 2009 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.
TEXT _rt0_amd64_linux(SB),1,$-8
PUSHQ $0
MOVQ SP, BP
ANDQ $~15, SP
MOVQ 8(BP), DI
LEAQ 16(BP), SI
MOVL DI, DX
ADDL $1, DX
SHLL $3, DX
ADDQ SI, DX
MOVQ DX, CX
CMPQ (CX), $0
JEQ done
loop:
ADDQ $8, CX
CMPQ (CX), $0
JNE loop
done:
ADDQ $8, CX
CALL check(SB)
CALL main_main(SB)
CALL sys_exit(SB)
CALL notok(SB)
POPQ AX
RET
TEXT FLUSH(SB),1,$-8
RET
TEXT sys_exit(SB),1,$-8
MOVL 8(SP), DI
MOVL $60, AX
SYSCALL
JCC 2(PC)
CALL notok(SB)
RET
TEXT sys_write(SB),1,$-8
MOVL 8(SP), DI
MOVQ 16(SP), SI
MOVL 24(SP), DX
MOVL $1, AX // syscall entry
SYSCALL
JCC 2(PC)
CALL notok(SB)
RET
TEXT sys_breakpoint(SB),1,$-8
BYTE $0xcc
RET
TEXT sys_mmap(SB),1,$-8
MOVQ 8(SP), DI
MOVL 16(SP), SI
MOVL 20(SP), DX
MOVL 24(SP), R10
MOVL 28(SP), R8
MOVL 32(SP), R9
MOVL $9, AX // syscall entry
SYSCALL
CMPQ AX, $0xfffffffffffff001
JNE 2(PC)
CALL notok(SB)
RET
TEXT notok(SB),1,$-8
MOVL $0xf1, BP
MOVQ BP, (BP)
RET
TEXT sys_memclr(SB),1,$-8
MOVQ 8(SP), DI // arg 1 addr
MOVL 16(SP), CX // arg 2 count
ADDL $7, CX
SHRL $3, CX
MOVQ $0, AX
CLD
REP
STOSQ
RET