asm_netbsd_arm.s

Documentation: syscall

     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
    16TEXT	·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
    30error:
    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
    38TEXT	·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
    55error6:
    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
    63TEXT	·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
    80error9:
    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
    88TEXT	·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
   100errorr:
   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
   107TEXT	·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
   122errorr6:
   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
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