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