asm_netbsd_arm.s raw

   1  // Copyright 2013 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  #include "textflag.h"
   6  #include "funcdata.h"
   7  
   8  //
   9  // System call support for ARM, NetBSD
  10  //
  11  
  12  // func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
  13  // func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32);
  14  // func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32)
  15  
  16  TEXT	·Syscall(SB),NOSPLIT,$0-28
  17  	BL runtime·entersyscall(SB)
  18  	MOVW trap+0(FP), R0 // sigcall num
  19  	MOVW a1+4(FP), R1 // a1
  20  	MOVW a2+8(FP), R2 // a2
  21  	MOVW a3+12(FP), R3 // a3
  22  	SWI $0 // syscall
  23  	MOVW $0, R2
  24  	BCS error
  25  	MOVW R0, r1+16(FP) // r1
  26  	MOVW R1, r2+20(FP) // r2
  27  	MOVW R2, err+24(FP) // err
  28  	BL runtime·exitsyscall(SB)
  29  	RET
  30  error:
  31  	MOVW $-1, R3
  32  	MOVW R3, r1+16(FP) // r1
  33  	MOVW R2, r2+20(FP) // r2
  34  	MOVW R0, err+24(FP) // err
  35  	BL runtime·exitsyscall(SB)
  36  	RET
  37  
  38  TEXT	·Syscall6(SB),NOSPLIT,$0-40
  39  	BL runtime·entersyscall(SB)
  40  	MOVW trap+0(FP), R0 // sigcall num
  41  	MOVW a1+4(FP), R1 // a1
  42  	MOVW a2+8(FP), R2 // a2
  43  	MOVW a3+12(FP), R3 // a3
  44  	MOVW R13, R4
  45  	MOVW $a4+16(FP), R13 // a4 to a6 are passed on stack
  46  	SWI $0 // syscall
  47  	MOVW R4, R13
  48  	MOVW $0, R2
  49  	BCS error6
  50  	MOVW R0, r1+28(FP) // r1
  51  	MOVW R1, r2+32(FP) // r2
  52  	MOVW R2, err+36(FP) // err
  53  	BL runtime·exitsyscall(SB)
  54  	RET
  55  error6:
  56  	MOVW $-1, R3
  57  	MOVW R3, r1+28(FP) // r1
  58  	MOVW R2, r2+32(FP) // r2
  59  	MOVW R0, err+36(FP) // err
  60  	BL runtime·exitsyscall(SB)
  61  	RET
  62  
  63  TEXT	·Syscall9(SB),NOSPLIT,$0-52
  64  	BL runtime·entersyscall(SB)
  65  	MOVW num+0(FP), R0 // sigcall num
  66  	MOVW a1+4(FP), R1 // a1
  67  	MOVW a2+8(FP), R2 // a2
  68  	MOVW a3+12(FP), R3 // a3
  69  	MOVW R13, R4
  70  	MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
  71  	SWI $0 // syscall
  72  	MOVW R4, R13
  73  	MOVW $0, R2
  74  	BCS error9
  75  	MOVW R0, r1+40(FP) // r1
  76  	MOVW R1, r2+44(FP) // r2
  77  	MOVW R2, err+48(FP) // err
  78  	BL runtime·exitsyscall(SB)
  79  	RET
  80  error9:
  81  	MOVW $-1, R3
  82  	MOVW R3, r1+40(FP) // r1
  83  	MOVW R2, r2+44(FP) // r2
  84  	MOVW R0, err+48(FP) // err
  85  	BL runtime·exitsyscall(SB)
  86  	RET
  87  
  88  TEXT	·RawSyscall(SB),NOSPLIT,$0-28
  89  	MOVW trap+0(FP), R0 // sigcall num
  90  	MOVW a1+4(FP), R1 // a1
  91  	MOVW a2+8(FP), R2 // a2
  92  	MOVW a3+12(FP), R3 // a3
  93  	SWI $0 // syscall
  94  	MOVW $0, R2
  95  	BCS errorr
  96  	MOVW R0, r1+16(FP) // r1
  97  	MOVW R1, r2+20(FP) // r2
  98  	MOVW R2, err+24(FP) // err
  99  	RET
 100  errorr:
 101  	MOVW $-1, R3
 102  	MOVW R3, r1+16(FP) // r1
 103  	MOVW R2, r2+20(FP) // r2
 104  	MOVW R0, err+24(FP) // err
 105  	RET
 106  
 107  TEXT	·RawSyscall6(SB),NOSPLIT,$0-40
 108  	MOVW trap+0(FP), R0 // sigcall num
 109  	MOVW a1+4(FP), R1 // a1
 110  	MOVW a2+8(FP), R2 // a2
 111  	MOVW a3+12(FP), R3 // a3
 112  	MOVW R13, R4
 113  	MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
 114  	SWI $0 // syscall
 115  	MOVW R4, R13
 116  	MOVW $0, R2
 117  	BCS errorr6
 118  	MOVW R0, r1+28(FP) // r1
 119  	MOVW R1, r2+32(FP) // r2
 120  	MOVW R2, err+36(FP) // err
 121  	RET
 122  errorr6:
 123  	MOVW $-1, R3
 124  	MOVW R3, r1+28(FP) // r1
 125  	MOVW R2, r2+32(FP) // r2
 126  	MOVW R0, err+36(FP) // err
 127  	RET
 128