1/* $NetBSD: cerror.S,v 1.13 2013/11/30 20:20:42 joerg Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * from: @(#)cerror.s 5.1 (Berkeley) 4/23/90 32 */ 33 34#include "SYS.h" 35 36ENTRY_NP(CERROR) 37#ifdef _REENTRANT 38#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__) 39 .fnstart 40 .cfi_startproc 41#endif 42 push {r4, lr} 43#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__) 44 .save {r4, lr} 45 .cfi_def_cfa_offset 8 46 .cfi_offset 14, -4 47 .cfi_offset 4, -8 48#endif 49 mov r4, r0 50 bl PLT_SYM(_C_LABEL(__errno)) 51 str r4, [r0] 52#ifdef __thumb__ 53 movs r0, #0 54 mvns r0, r0 55#else 56 mvn r0, #0 57#endif 58 mov r1, r0 59 pop {r4, pc} 60#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__) 61 .cfi_endproc 62 .fnend 63#endif 64#else /* !_REENTRANT */ 65#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__) 66 .fnstart 67 .cfi_startproc 68#endif 69#ifdef __PIC__ 70 /* Setup the GOT */ 71 ldr r3, .Lgot 72 add r3, r3, pc /* pc = &.LPIC0 */ 73 ldr r1, .Lerrno 74.LPIC0: ldr r1, [r3, r1] 75#else 76 ldr r1, .Lerrno 77#endif /* __PIC__ */ 78 str r0, [r1] 79#ifdef __thumb__ 80 movs r0, #0 81 mvns r0, r0 82#else 83 mvn r0, #0 84#endif /* __thumb__ */ 85 mov r1, r0 86 RET 87#if defined(__ARM_EABI__) && defined(__UNWIND_TABLES__) 88 .cfi_endproc 89 .fnend 90#endif 91 92#ifdef __PIC__ 93 .align 0 94.Lgot: 95 .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) - .LPIC0 96#endif /* __PIC__ */ 97 .globl _C_LABEL(errno) 98 99.Lerrno: 100 .word PIC_SYM(_C_LABEL(errno), GOT) 101#endif /* _REENTRANT */ 102END(CERROR) 103