| brk.S (201858) | brk.S (209231) |
|---|---|
| 1/* $NetBSD: brk.S,v 1.16 2003/08/07 16:42:17 agc Exp $ */ 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. --- 19 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> | 1/* $NetBSD: brk.S,v 1.16 2003/08/07 16:42:17 agc Exp $ */ 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. --- 19 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> |
| 36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/brk.S 201858 2010-01-08 23:59:04Z imp $"); | 36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/brk.S 209231 2010-06-16 12:55:14Z jchandra $"); |
| 37#include "SYS.h" 38 39#if defined(LIBC_SCCS) && !defined(lint) 40 ASMSTR("from: @(#)brk.s 8.1 (Berkeley) 6/4/93") 41 ASMSTR("$NetBSD: brk.S,v 1.16 2003/08/07 16:42:17 agc Exp $") 42#endif /* LIBC_SCCS and not lint */ 43 44 .globl _C_LABEL(minbrk) 45 .globl _C_LABEL(__curbrk) 46 .globl _C_LABEL(_end) 47 48 .data 49_C_LABEL(minbrk): 50 .word _C_LABEL(_end) 51 | 37#include "SYS.h" 38 39#if defined(LIBC_SCCS) && !defined(lint) 40 ASMSTR("from: @(#)brk.s 8.1 (Berkeley) 6/4/93") 41 ASMSTR("$NetBSD: brk.S,v 1.16 2003/08/07 16:42:17 agc Exp $") 42#endif /* LIBC_SCCS and not lint */ 43 44 .globl _C_LABEL(minbrk) 45 .globl _C_LABEL(__curbrk) 46 .globl _C_LABEL(_end) 47 48 .data 49_C_LABEL(minbrk): 50 .word _C_LABEL(_end) 51 |
| 52 .text |
|
| 52LEAF(__sys_brk) 53 WEAK_ALIAS(brk, __sys_brk) 54 WEAK_ALIAS(_brk, __sys_brk) | 53LEAF(__sys_brk) 54 WEAK_ALIAS(brk, __sys_brk) 55 WEAK_ALIAS(_brk, __sys_brk) |
| 55#ifdef __ABICALLS__ 56 .set noreorder 57 .cpload t9 58 .set reorder 59#endif 60 lw v0, _C_LABEL(minbrk) | 56 PIC_PROLOGUE(__sys_brk) 57 PTR_LA v0, _C_LABEL(minbrk) 58 PTR_L v0, 0(v0) |
| 61 bgeu a0, v0, 1f 62 move a0, v0 # dont allow break < minbrk 631: 64 li v0, SYS_break 65 syscall 66 bne a3, zero, 2f | 59 bgeu a0, v0, 1f 60 move a0, v0 # dont allow break < minbrk 611: 62 li v0, SYS_break 63 syscall 64 bne a3, zero, 2f |
| 67 sw a0, _C_LABEL(__curbrk) | 65 PTR_LA t0, _C_LABEL(__curbrk) 66 PTR_S a0, 0(t0) |
| 68 move v0, zero | 67 move v0, zero |
| 69 j ra | 68 PIC_RETURN() |
| 702: | 692: |
| 71 la t9, _C_LABEL(__cerror) 72 jr t9 | 70 PIC_TAILCALL(__cerror) |
| 73END(__sys_brk) | 71END(__sys_brk) |