| sbrk.S (178580) | sbrk.S (209231) |
|---|---|
| 1/* $NetBSD: sbrk.S,v 1.16 2005/04/22 06:58:01 simonb 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: sbrk.S,v 1.16 2005/04/22 06:58:01 simonb 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/sbrk.S 178580 2008-04-26 12:08:02Z imp $"); | 36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/sbrk.S 209231 2010-06-16 12:55:14Z jchandra $"); |
| 37#include "SYS.h" 38 39#if defined(LIBC_SCCS) && !defined(lint) 40 ASMSTR("from: @(#)sbrk.s 8.1 (Berkeley) 6/4/93") 41 ASMSTR("$NetBSD: sbrk.S,v 1.16 2005/04/22 06:58:01 simonb Exp $") 42#endif /* LIBC_SCCS and not lint */ 43 44 .globl _C_LABEL(__curbrk) 45 .globl _C_LABEL(_end) 46 47 .data 48_C_LABEL(__curbrk): 49 .word _C_LABEL(_end) 50 .text 51 52LEAF(__sys_sbrk) 53 WEAK_ALIAS(sbrk, __sys_sbrk) 54 WEAK_ALIAS(_sbrk, __sys_sbrk) | 37#include "SYS.h" 38 39#if defined(LIBC_SCCS) && !defined(lint) 40 ASMSTR("from: @(#)sbrk.s 8.1 (Berkeley) 6/4/93") 41 ASMSTR("$NetBSD: sbrk.S,v 1.16 2005/04/22 06:58:01 simonb Exp $") 42#endif /* LIBC_SCCS and not lint */ 43 44 .globl _C_LABEL(__curbrk) 45 .globl _C_LABEL(_end) 46 47 .data 48_C_LABEL(__curbrk): 49 .word _C_LABEL(_end) 50 .text 51 52LEAF(__sys_sbrk) 53 WEAK_ALIAS(sbrk, __sys_sbrk) 54 WEAK_ALIAS(_sbrk, __sys_sbrk) |
| 55#ifdef __ABICALLS__ 56 .set noreorder 57 .cpload t9 58 .set reorder 59#endif 60 addu sp, sp, -16 61 sw s0, 0(sp) # Preserve s0 value in stack 62 # it should be the same on return 63 # We can't use v1 as temporary 64 # register since syscall uses it 65 # to return 64-bit values 66 lw s0, _C_LABEL(__curbrk) 67 li v0, SYS_break 68 addu a0, a0, s0 # compute current break | 55 PIC_PROLOGUE(__sys_sbrk) 56 PTR_LA t0, _C_LABEL(__curbrk) 57 PTR_L t0, 0(t0) 58 PTR_ADDU a0, a0, t0 |
| 69 | 59 |
| 60 li v0, SYS_break |
|
| 70 syscall 71 72 bne a3, zero, 1f 73 nop | 61 syscall 62 63 bne a3, zero, 1f 64 nop |
| 74 move v0, s0 # return old val of curbrk from above 75 lw s0, 0(sp) 76 addu sp, sp, 16 77 sw a0, _C_LABEL(__curbrk) # save current val of curbrk from above | 65 move v0, t0 # return old val of curbrk from above 66 PTR_LA t0, _C_LABEL(__curbrk) 67 PTR_S a0, 0(t0) # save current val of curbrk from above 68 PIC_RETURN() |
| 78 j ra 79 801: | 69 j ra 70 711: |
| 81 lw s0, 0(sp) 82 addu sp, sp, 16 83 la t9, _C_LABEL(__cerror) 84 jr t9 | 72 PIC_TAILCALL(__cerror) |
| 85END(__sys_sbrk) | 73END(__sys_sbrk) |