github.com/megatontech/mynoteforgo@v0.0.0-20200507084910-5d0c6ea6e890/源码/syscall/asm_linux_ppc64x.s (about)

     1  // Copyright 2014 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build linux
     6  // +build ppc64 ppc64le
     7  
     8  #include "textflag.h"
     9  
    10  //
    11  // System calls for ppc64, Linux
    12  //
    13  
    14  // func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
    15  TEXT ·Syscall(SB),NOSPLIT,$0-56
    16  	BL	runtime·entersyscall(SB)
    17  	MOVD	a1+8(FP), R3
    18  	MOVD	a2+16(FP), R4
    19  	MOVD	a3+24(FP), R5
    20  	MOVD	R0, R6
    21  	MOVD	R0, R7
    22  	MOVD	R0, R8
    23  	MOVD	trap+0(FP), R9	// syscall entry
    24  	SYSCALL R9
    25  	BVC	ok
    26  	MOVD	$-1, R4
    27  	MOVD	R4, r1+32(FP)	// r1
    28  	MOVD	R0, r2+40(FP)	// r2
    29  	MOVD	R3, err+48(FP)	// errno
    30  	BL	runtime·exitsyscall(SB)
    31  	RET
    32  ok:
    33  	MOVD	R3, r1+32(FP)	// r1
    34  	MOVD	R4, r2+40(FP)	// r2
    35  	MOVD	R0, err+48(FP)	// errno
    36  	BL	runtime·exitsyscall(SB)
    37  	RET
    38  
    39  TEXT ·Syscall6(SB),NOSPLIT,$0-80
    40  	BL	runtime·entersyscall(SB)
    41  	MOVD	a1+8(FP), R3
    42  	MOVD	a2+16(FP), R4
    43  	MOVD	a3+24(FP), R5
    44  	MOVD	a4+32(FP), R6
    45  	MOVD	a5+40(FP), R7
    46  	MOVD	a6+48(FP), R8
    47  	MOVD	trap+0(FP), R9	// syscall entry
    48  	SYSCALL R9
    49  	BVC	ok6
    50  	MOVD	$-1, R4
    51  	MOVD	R4, r1+56(FP)	// r1
    52  	MOVD	R0, r2+64(FP)	// r2
    53  	MOVD	R3, err+72(FP)	// errno
    54  	BL	runtime·exitsyscall(SB)
    55  	RET
    56  ok6:
    57  	MOVD	R3, r1+56(FP)	// r1
    58  	MOVD	R4, r2+64(FP)	// r2
    59  	MOVD	R0, err+72(FP)	// errno
    60  	BL	runtime·exitsyscall(SB)
    61  	RET
    62  
    63  TEXT ·RawSyscall(SB),NOSPLIT,$0-56
    64  	MOVD	a1+8(FP), R3
    65  	MOVD	a2+16(FP), R4
    66  	MOVD	a3+24(FP), R5
    67  	MOVD	R0, R6
    68  	MOVD	R0, R7
    69  	MOVD	R0, R8
    70  	MOVD	trap+0(FP), R9	// syscall entry
    71  	SYSCALL R9
    72  	BVC	ok1
    73  	MOVD	$-1, R4
    74  	MOVD	R4, r1+32(FP)	// r1
    75  	MOVD	R0, r2+40(FP)	// r2
    76  	MOVD	R3, err+48(FP)	// errno
    77  	RET
    78  ok1:
    79  	MOVD	R3, r1+32(FP)	// r1
    80  	MOVD	R4, r2+40(FP)	// r2
    81  	MOVD	R0, err+48(FP)	// errno
    82  	RET
    83  
    84  TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
    85  	MOVD	a1+8(FP), R3
    86  	MOVD	a2+16(FP), R4
    87  	MOVD	a3+24(FP), R5
    88  	MOVD	a4+32(FP), R6
    89  	MOVD	a5+40(FP), R7
    90  	MOVD	a6+48(FP), R8
    91  	MOVD	trap+0(FP), R9	// syscall entry
    92  	SYSCALL R9
    93  	BVC	ok2
    94  	MOVD	$-1, R4
    95  	MOVD	R4, r1+56(FP)	// r1
    96  	MOVD	R0, r2+64(FP)	// r2
    97  	MOVD	R3, err+72(FP)	// errno
    98  	RET
    99  ok2:
   100  	MOVD	R3, r1+56(FP)	// r1
   101  	MOVD	R4, r2+64(FP)	// r2
   102  	MOVD	R0, err+72(FP)	// errno
   103  	RET
   104  
   105  TEXT ·rawSyscallNoError(SB),NOSPLIT,$0-48
   106  	MOVD	a1+8(FP), R3
   107  	MOVD	a2+16(FP), R4
   108  	MOVD	a3+24(FP), R5
   109  	MOVD	R0, R6
   110  	MOVD	R0, R7
   111  	MOVD	R0, R8
   112  	MOVD	trap+0(FP), R9	// syscall entry
   113  	SYSCALL R9
   114  	MOVD	R3, r1+32(FP)
   115  	MOVD	R4, r2+40(FP)
   116  	RET