| sbrk.S (270882) | sbrk.S (282782) |
|---|---|
| 1/* $NetBSD: sbrk.S,v 1.7 2003/08/07 16:42:05 agc 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 --- 18 unchanged lines hidden (view full) --- 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: @(#)sbrk.s 5.1 (Berkeley) 4/23/90 32 */ 33 34#include <machine/asm.h> | 1/* $NetBSD: sbrk.S,v 1.7 2003/08/07 16:42:05 agc 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 --- 18 unchanged lines hidden (view full) --- 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: @(#)sbrk.s 5.1 (Berkeley) 4/23/90 32 */ 33 34#include <machine/asm.h> |
| 35__FBSDID("$FreeBSD: head/lib/libc/arm/sys/sbrk.S 270882 2014-08-31 17:21:51Z ian $"); | 35__FBSDID("$FreeBSD: head/lib/libc/arm/sys/sbrk.S 282782 2015-05-11 20:33:46Z andrew $"); |
| 36#include "SYS.h" 37 38 .globl _C_LABEL(_end) 39 40#ifdef WEAK_ALIAS 41WEAK_ALIAS(sbrk, _sbrk) 42#endif 43 44 .data 45 .align 0 46 .globl CURBRK 47 .type CURBRK,#object 48CURBRK: 49 .word _C_LABEL(_end) 50 51/* 52 * Change the data segment size 53 */ 54ENTRY(_sbrk) | 36#include "SYS.h" 37 38 .globl _C_LABEL(_end) 39 40#ifdef WEAK_ALIAS 41WEAK_ALIAS(sbrk, _sbrk) 42#endif 43 44 .data 45 .align 0 46 .globl CURBRK 47 .type CURBRK,#object 48CURBRK: 49 .word _C_LABEL(_end) 50 51/* 52 * Change the data segment size 53 */ 54ENTRY(_sbrk) |
| 55#ifdef PIC | |
| 56 /* Setup the GOT */ | 55 /* Setup the GOT */ |
| 57 ldr r3, .Lgot 58 add r3, pc, r3 59.L1: 60 ldr r2, .Lcurbrk 61 ldr r2, [r3, r2] 62#else 63 ldr r2, .Lcurbrk 64#endif | 56 GOT_INIT(r3, .Lgot, .L1) 57 GOT_GET(r2, r3, .Lcurbrk) 58 |
| 65 /* Get the current brk address */ 66 ldr r1, [r2] 67 68 /* Calculate new value */ 69 mov r3, r0 70 add r0, r0, r1 71 SYSTRAP(break) 72 bcs PIC_SYM(CERROR, PLT) 73 74 /* Store new curbrk value */ 75 ldr r0, [r2] 76 add r1, r0, r3 77 str r1, [r2] 78 79 /* Return old curbrk value */ 80 RET 81 82 .align 0 | 59 /* Get the current brk address */ 60 ldr r1, [r2] 61 62 /* Calculate new value */ 63 mov r3, r0 64 add r0, r0, r1 65 SYSTRAP(break) 66 bcs PIC_SYM(CERROR, PLT) 67 68 /* Store new curbrk value */ 69 ldr r0, [r2] 70 add r1, r0, r3 71 str r1, [r2] 72 73 /* Return old curbrk value */ 74 RET 75 76 .align 0 |
| 83#ifdef PIC 84.Lgot: 85 .word _GLOBAL_OFFSET_TABLE_ - (.L1+4) 86#endif | 77 GOT_INITSYM(.Lgot, .L1) |
| 87.Lcurbrk: 88 .word PIC_SYM(CURBRK, GOT) 89END(_sbrk) | 78.Lcurbrk: 79 .word PIC_SYM(CURBRK, GOT) 80END(_sbrk) |