31489a9a26
For setjmp() and longjmp(), put the signal mask where it's supposed to be, instead of in the space reserved for fp regs.
101 lines
2.7 KiB
ArmAsm
101 lines
2.7 KiB
ArmAsm
/* $NetBSD: brk.S,v 1.6 2003/08/07 16:42:04 agc Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)brk.s 5.2 (Berkeley) 12/17/90
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*/
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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#include "SYS.h"
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.globl _C_LABEL(end)
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.globl CURBRK
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#ifdef WEAK_ALIAS
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WEAK_ALIAS(brk, _brk)
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#endif
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.data
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.align 0
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.globl _C_LABEL(minbrk)
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.type _C_LABEL(minbrk),#object
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_C_LABEL(minbrk):
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.word _C_LABEL(end)
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/*
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* Change the data segment size
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*/
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ENTRY(_brk)
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#ifdef PIC
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/* Setup the GOT */
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ldr r3, .Lgot
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add r3, pc, r3
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.L1:
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ldr r1, .Lminbrk
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ldr r1, [r3, r1]
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#else
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ldr r1, .Lminbrk
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#endif
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/* Get the minimum allowable brk address */
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ldr r1, [r1]
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/*
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* Valid the address specified and set to the minimum
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* if the address is below minbrk.
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*/
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cmp r0, r1
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movlt r0, r1
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mov r2, r0
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SYSTRAP(break)
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bcs PIC_SYM(CERROR, PLT)
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#ifdef PIC
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ldr r1, .Lcurbrk
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ldr r1, [r3, r1]
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#else
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ldr r1, .Lcurbrk
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#endif
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/* Store the new address in curbrk */
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str r2, [r1]
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/* Return 0 for success */
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mov r0, #0x00000000
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RET
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.align 2
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#ifdef PIC
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.Lgot:
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.word _GLOBAL_OFFSET_TABLE_ - (.L1+4)
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#endif
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.Lminbrk:
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.word PIC_SYM(_C_LABEL(minbrk), GOT)
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.Lcurbrk:
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.word PIC_SYM(CURBRK, GOT)
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