github.com/varialus/godfly@v0.0.0-20130904042352-1934f9f095ab/src/pkg/syscall/asm_netbsd_arm.s (about) 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 "../../cmd/ld/textflag.h" 6 7 // 8 // System call support for ARM, NetBSD 9 // 10 11 // func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32); 12 // func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32); 13 // func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32) 14 15 TEXT ·Syscall(SB),NOSPLIT,$0-28 16 BL runtime·entersyscall(SB) 17 MOVW 0(FP), R0 // sigcall num 18 MOVW 4(FP), R1 // a1 19 MOVW 8(FP), R2 // a2 20 MOVW 12(FP), R3 // a3 21 SWI $0 // syscall 22 MOVW $0, R2 23 BCS error 24 MOVW R0, 16(FP) // r1 25 MOVW R1, 20(FP) // r2 26 MOVW R2, 24(FP) // err 27 BL runtime·exitsyscall(SB) 28 RET 29 error: 30 MOVW $-1, R3 31 MOVW R3, 16(FP) // r1 32 MOVW R2, 20(FP) // r2 33 MOVW R0, 24(FP) // err 34 BL runtime·exitsyscall(SB) 35 RET 36 37 TEXT ·Syscall6(SB),NOSPLIT,$0-40 38 BL runtime·entersyscall(SB) 39 MOVW 0(FP), R0 // sigcall num 40 MOVW 4(FP), R1 // a1 41 MOVW 8(FP), R2 // a2 42 MOVW 12(FP), R3 // a3 43 MOVW R13, R4 44 MOVW $16(FP), R13 // a4 to a6 are passed on stack 45 SWI $0 // syscall 46 MOVW R4, R13 47 MOVW $0, R2 48 BCS error6 49 MOVW R0, 28(FP) // r1 50 MOVW R1, 32(FP) // r2 51 MOVW R2, 36(FP) // err 52 BL runtime·exitsyscall(SB) 53 RET 54 error6: 55 MOVW $-1, R3 56 MOVW R3, 28(FP) // r1 57 MOVW R2, 32(FP) // r2 58 MOVW R0, 36(FP) // err 59 BL runtime·exitsyscall(SB) 60 RET 61 62 TEXT ·Syscall9(SB),NOSPLIT,$0-52 63 BL runtime·entersyscall(SB) 64 MOVW 0(FP), R0 // sigcall num 65 MOVW 4(FP), R1 // a1 66 MOVW 8(FP), R2 // a2 67 MOVW 12(FP), R3 // a3 68 MOVW R13, R4 69 MOVW $16(FP), R13 // a4 to a9 are passed on stack 70 SWI $0 // syscall 71 MOVW R4, R13 72 MOVW $0, R2 73 BCS error9 74 MOVW R0, 40(FP) // r1 75 MOVW R1, 44(FP) // r2 76 MOVW R2, 48(FP) // err 77 BL runtime·exitsyscall(SB) 78 RET 79 error9: 80 MOVW $-1, R3 81 MOVW R3, 40(FP) // r1 82 MOVW R2, 44(FP) // r2 83 MOVW R0, 48(FP) // err 84 BL runtime·exitsyscall(SB) 85 RET 86 87 TEXT ·RawSyscall(SB),NOSPLIT,$0-28 88 MOVW 0(FP), R0 // sigcall num 89 MOVW 4(FP), R1 // a1 90 MOVW 8(FP), R2 // a2 91 MOVW 12(FP), R3 // a3 92 SWI $0 // syscall 93 MOVW $0, R2 94 BCS errorr 95 MOVW R0, 16(FP) // r1 96 MOVW R1, 20(FP) // r2 97 MOVW R2, 24(FP) // err 98 RET 99 errorr: 100 MOVW $-1, R3 101 MOVW R3, 16(FP) // r1 102 MOVW R2, 20(FP) // r2 103 MOVW R0, 24(FP) // err 104 RET 105 106 TEXT ·RawSyscall6(SB),NOSPLIT,$0-40 107 MOVW 0(FP), R0 // sigcall num 108 MOVW 4(FP), R1 // a1 109 MOVW 8(FP), R2 // a2 110 MOVW 12(FP), R3 // a3 111 MOVW R13, R4 112 MOVW $16(FP), R13 // a4 to a9 are passed on stack 113 SWI $0 // syscall 114 MOVW R4, R13 115 MOVW $0, R2 116 BCS errorr6 117 MOVW R0, 28(FP) // r1 118 MOVW R1, 32(FP) // r2 119 MOVW R2, 36(FP) // err 120 RET 121 errorr6: 122 MOVW $-1, R3 123 MOVW R3, 28(FP) // r1 124 MOVW R2, 32(FP) // r2 125 MOVW R0, 36(FP) // err 126 RET