1/* $NetBSD: ptrace.S,v 1.9 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/ptrace.S 209231 2010-06-16 12:55:14Z jchandra $");
37#include "SYS.h"
38
39#if defined(LIBC_SCCS) && !defined(lint)
40 ASMSTR("from: @(#)ptrace.s 8.1 (Berkeley) 6/4/93")
41 ASMSTR("$NetBSD: ptrace.S,v 1.9 2003/08/07 16:42:17 agc Exp $")
42#endif /* LIBC_SCCS and not lint */
43
44NESTED_NOPROFILE(ptrace, CALLFRAME_SIZ, ra)
45 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
46 SETUP_GP
47 PTR_SUBU sp, sp, CALLFRAME_SIZ
48 SETUP_GP64(CALLFRAME_GP, ptrace)
49 SAVE_GP(CALLFRAME_GP)
50
51 PTR_S ra, CALLFRAME_RA(sp)
52
53 PTR_LA t9, _C_LABEL(__error) # locate address of errno
54 jalr t9
55
56 PTR_L ra, CALLFRAME_RA(sp)
57 INT_S zero, 0(v0) # update errno value
58
59 li v0, SYS_ptrace
60 syscall
61
62 # Load __cerror's address using our gp, then restore it.
63 PTR_LA t9, __cerror
64 RESTORE_GP64
65 PTR_ADDU sp, sp, CALLFRAME_SIZ
66
67 bne a3, zero, 1f
68
69 j ra
701: j t9
71END(ptrace)
2
3/*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
--- 19 unchanged lines hidden (view full) ---
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
36__FBSDID("$FreeBSD: head/lib/libc/mips/sys/ptrace.S 209231 2010-06-16 12:55:14Z jchandra $");
37#include "SYS.h"
38
39#if defined(LIBC_SCCS) && !defined(lint)
40 ASMSTR("from: @(#)ptrace.s 8.1 (Berkeley) 6/4/93")
41 ASMSTR("$NetBSD: ptrace.S,v 1.9 2003/08/07 16:42:17 agc Exp $")
42#endif /* LIBC_SCCS and not lint */
43
44NESTED_NOPROFILE(ptrace, CALLFRAME_SIZ, ra)
45 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
46 SETUP_GP
47 PTR_SUBU sp, sp, CALLFRAME_SIZ
48 SETUP_GP64(CALLFRAME_GP, ptrace)
49 SAVE_GP(CALLFRAME_GP)
50
51 PTR_S ra, CALLFRAME_RA(sp)
52
53 PTR_LA t9, _C_LABEL(__error) # locate address of errno
54 jalr t9
55
56 PTR_L ra, CALLFRAME_RA(sp)
57 INT_S zero, 0(v0) # update errno value
58
59 li v0, SYS_ptrace
60 syscall
61
62 # Load __cerror's address using our gp, then restore it.
63 PTR_LA t9, __cerror
64 RESTORE_GP64
65 PTR_ADDU sp, sp, CALLFRAME_SIZ
66
67 bne a3, zero, 1f
68
69 j ra
701: j t9
71END(ptrace)