minix/lib/libc/arch/powerpc/sys/ptrace.S
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

61 lines
1.4 KiB
ArmAsm

/* $NetBSD: ptrace.S,v 1.7 2013/09/12 15:36:15 joerg Exp $ */
#include "SYS.h"
#include "assym.h"
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: ptrace.S,v 1.7 2013/09/12 15:36:15 joerg Exp $")
#endif /* LIBC_SCCS && !lint */
#define XCALLFRAMELEN ((((2+5)*SZREG) + CALLFRAMELEN - 1) & -CALLFRAMELEN)
#define XCALLFRAME_DATA (XCALLFRAMELEN - 1*SZREG)
#define XCALLFRAME_ADDR (XCALLFRAMELEN - 2*SZREG)
#define XCALLFRAME_PID (XCALLFRAMELEN - 3*SZREG)
#define XCALLFRAME_REQUEST (XCALLFRAMELEN - 4*SZREG)
#define XCALLFRAME_R30 (XCALLFRAMELEN - 5*SZREG)
ENTRY(ptrace)
#ifdef _REENTRANT
mflr %r0
stw %r0,CALLFRAME_LR(%r1)
stwu %r1,-XCALLFRAMELEN(%r1)
stw %r3,XCALLFRAME_REQUEST(%r1)
stw %r4,XCALLFRAME_PID(%r1)
stw %r5,XCALLFRAME_ADDR(%r1)
stw %r6,XCALLFRAME_DATA(%r1)
#ifdef __PIC__
stw %r30,XCALLFRAME_R30(%r1)
PIC_TOCSETUP(ptrace, %r30)
#endif
bl PIC_PLT(_C_LABEL(__errno))
li %r7,0
stw %r7,0(%r3)
#ifdef __PIC__
lwz %r30,XCALLFRAME_R30(%r1)
#endif
lwz %r6,XCALLFRAME_DATA(%r1)
lwz %r4,XCALLFRAME_PID(%r1)
lwz %r5,XCALLFRAME_ADDR(%r1)
lwz %r3,XCALLFRAME_REQUEST(%r1)
addi %r1,%r1,XCALLFRAMELEN
lwz %r0,CALLFRAME_LR(%r1)
mtlr %r0
#else
#ifdef __PIC__
mflr %r0
PIC_GOTSETUP(%r7)
lwz %r7,_C_LABEL(errno)@got(%r7)
li %r8,0
stw %r8,0(%r7)
mtlr 0
#else
lis %r7,_C_LABEL(errno)@ha
li %r8,0
stw %r8,_C_LABEL(errno)@l(%r7)
#endif /* __PIC__ */
#endif /* _REENTRANT */
_DOSYSCALL(ptrace)
bnslr
b _C_LABEL(__cerror)