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