diff options
Diffstat (limited to 'lib/libc/arm/sys/ptrace.S')
| -rw-r--r-- | lib/libc/arm/sys/ptrace.S | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/lib/libc/arm/sys/ptrace.S b/lib/libc/arm/sys/ptrace.S new file mode 100644 index 0000000..0aa1122 --- /dev/null +++ b/lib/libc/arm/sys/ptrace.S @@ -0,0 +1,77 @@ +/* $NetBSD: ptrace.S,v 1.7 2003/08/07 16:42:04 agc Exp $ */ + +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * from: @(#)ptrace.s 5.1 (Berkeley) 4/23/90 + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); +#include "SYS.h" + +ENTRY(ptrace) +#ifdef _REENTRANT + stmfd sp!, {r0-r3, lr} + sub sp, sp, #4 /* align stack */ + bl PIC_SYM(_C_LABEL(__errno), PLT) + add sp, sp, #4 /* unalign stack */ + mov r1, #0x00000000 + str r1, [r0] + ldmfd sp!, {r0-r3, lr} +#else + stmfd sp!, {r0, r1} +#ifdef PIC + /* Setup the GOT */ + ldr r0, .Lgot + add r0, pc, r0 +.L1: + ldr r1, .Lerrno + ldr r1, [r0, r1] +#else + ldr r1, .Lerrno +#endif /* PIC */ + mov r0, #0x00000000 + str r0, [r1] + ldmfd sp!, {r0, r1} +#endif /* _REENTRANT */ + + SYSTRAP(ptrace) + bcs PIC_SYM(CERROR, PLT) + mov pc, lr + +#ifndef _REENTRANT +#ifdef PIC + .align 0 +.Lgot: + .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (.L1+4)) +#endif /* PIC */ + +.Lerrno: + .word PIC_SYM(_C_LABEL(errno), GOT) +#endif /* !_REENTRANT */ |
