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      1  1.1  matt /*	$NetBSD: ptrace.S,v 1.1 2014/09/03 19:34:26 matt Exp $	*/
      2  1.1  matt 
      3  1.1  matt #include "SYS.h"
      4  1.1  matt #include "assym.h"
      5  1.1  matt 
      6  1.1  matt #if defined(LIBC_SCCS) && !defined(lint)
      7  1.1  matt __RCSID("$NetBSD: ptrace.S,v 1.1 2014/09/03 19:34:26 matt Exp $")
      8  1.1  matt #endif /* LIBC_SCCS && !lint */
      9  1.1  matt 
     10  1.1  matt #define	XCALLFRAME_LR		(-1*4)
     11  1.1  matt #define	XCALLFRAME_DATA		(-2*4)
     12  1.1  matt #define	XCALLFRAME_ADDR		(-3*4)
     13  1.1  matt #define	XCALLFRAME_PID		(-4*4)
     14  1.1  matt #define	XCALLFRAME_REQUEST	(-5*4)
     15  1.1  matt #define	XCALLFRAME_GP		(-6*4)
     16  1.1  matt #define	XCALLFRAME_SP		(-7*4)
     17  1.1  matt #define	XCALLFRAMELEN		(-XCALLFRAME_SP)
     18  1.1  matt 
     19  1.1  matt ENTRY(ptrace)
     20  1.1  matt #ifdef _REENTRANT
     21  1.1  matt 	l.sw	XCALLFRAME_LR(r1),lr
     22  1.1  matt 	l.sw	XCALLFRAME_REQUEST(r1),r3
     23  1.1  matt 	l.sw	XCALLFRAME_PID(r1),r4
     24  1.1  matt 	l.sw	XCALLFRAME_ADDR(r1),r5
     25  1.1  matt 	l.sw	XCALLFRAME_DATA(r1),r6
     26  1.1  matt 
     27  1.1  matt #ifdef __PIC__
     28  1.1  matt 	l.sw	XCALLFRAME_GP(r1),r16
     29  1.1  matt 	PIC_GOTSETUP(r16)
     30  1.1  matt #endif
     31  1.1  matt 
     32  1.1  matt 	l.addi	r1,r1,-XCALLFRAMELEN
     33  1.1  matt 	l.jal	PLT(_C_LABEL(__errno))
     34  1.1  matt 	l.nop
     35  1.1  matt 	l.sw	0(r11),r0
     36  1.1  matt 	l.addi	r1,r1,XCALLFRAMELEN
     37  1.1  matt 
     38  1.1  matt #ifdef __PIC__
     39  1.1  matt 	l.lwz	r16,XCALLFRAME_GP(r1)
     40  1.1  matt #endif
     41  1.1  matt 
     42  1.1  matt 	l.lwz	r6,XCALLFRAME_DATA(r1)
     43  1.1  matt 	l.lwz	r4,XCALLFRAME_PID(r1)
     44  1.1  matt 	l.lwz	r5,XCALLFRAME_ADDR(r1)
     45  1.1  matt 	l.lwz	r3,XCALLFRAME_REQUEST(r1)
     46  1.1  matt 	l.lwz	lr,XCALLFRAME_LR(r1)
     47  1.1  matt #else
     48  1.1  matt #ifdef __PIC__
     49  1.1  matt 	l.or	r8,r9,r0
     50  1.1  matt 	PIC_GOTSETUP(r7)
     51  1.1  matt 	lwz	r7,_C_LABEL(errno)@got(r7)
     52  1.1  matt 	l.or	r9,r8,r0
     53  1.1  matt #else
     54  1.1  matt 	l.movhi	r7,hi(_C_LABEL(errno))
     55  1.1  matt 	l.ori	r7,r7,lo(_C_LABEL(errno))
     56  1.1  matt #endif /* __PIC__ */
     57  1.1  matt #endif /* _REENTRANT */
     58  1.1  matt 	l.sw	0(r7),r0
     59  1.1  matt 	_DOSYSCALL(ptrace)
     60  1.1  matt 	l.bf	_C_LABEL(__cerror)
     61  1.1  matt 	l.nop
     62  1.1  matt 	l.jr	lr
     63  1.1  matt 	l.nop
     64  1.1  matt END(ptrace)
     65