/*--------------------------------------------------------------------*/
/*--- Platform-specific syscalls stuff. syswrap-ppc64-linux.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2005-2013 Nicholas Nethercote <njn@valgrind.org>
Copyright (C) 2005-2013 Cerion Armour-Brown <cerion@open-works.co.uk>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#if defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux)
#include "pub_core_basics.h"
#include "pub_core_vki.h"
#include "pub_core_vkiscnums.h"
#include "pub_core_threadstate.h"
#include "pub_core_aspacemgr.h"
#include "pub_core_debuglog.h"
#include "pub_core_libcbase.h"
#include "pub_core_libcassert.h"
#include "pub_core_libcprint.h"
#include "pub_core_libcproc.h"
#include "pub_core_libcsignal.h"
#include "pub_core_options.h"
#include "pub_core_scheduler.h"
#include "pub_core_sigframe.h" // For VG_(sigframe_destroy)()
#include "pub_core_signals.h"
#include "pub_core_syscall.h"
#include "pub_core_syswrap.h"
#include "pub_core_tooliface.h"
#include "priv_types_n_macros.h"
#include "priv_syswrap-generic.h" /* for decls of generic wrappers */
#include "priv_syswrap-linux.h" /* for decls of linux-ish wrappers */
#include "priv_syswrap-main.h"
/* ---------------------------------------------------------------------
clone() handling
------------------------------------------------------------------ */
/* Call f(arg1), but first switch stacks, using 'stack' as the new
stack, and use 'retaddr' as f's return-to address. Also, clear all
the integer registers before entering f.*/
__attribute__((noreturn))
void ML_(call_on_new_stack_0_1) ( Addr stack,
Addr retaddr,
void (*f_desc)(Word),
Word arg1 );
// r3 = stack
// r4 = retaddr
// r5 = function descriptor
// r6 = arg1
/* On PPC64, a func ptr is represented by a TOC entry ptr.
This TOC entry contains three words; the first word is the function
address, the second word is the TOC ptr (r2), and the third word is
the static chain value. */
asm(
#if defined(VGP_ppc64be_linux)
" .align 2\n"
" .globl vgModuleLocal_call_on_new_stack_0_1\n"
" .section \".opd\",\"aw\"\n"
" .align 3\n"
"vgModuleLocal_call_on_new_stack_0_1:\n"
" .quad .vgModuleLocal_call_on_new_stack_0_1,.TOC.@tocbase,0\n"
" .previous\n"
" .type .vgModuleLocal_call_on_new_stack_0_1,@function\n"
" .globl .vgModuleLocal_call_on_new_stack_0_1\n"
".vgModuleLocal_call_on_new_stack_0_1:\n"
" mr %r1,%r3\n\t" // stack to %sp
" mtlr %r4\n\t" // retaddr to %lr
" ld 5,0(5)\n\t" // load f_ptr from f_desc[0]
" mtctr %r5\n\t" // f_ptr to count reg
" mr %r3,%r6\n\t" // arg1 to %r3
" li 0,0\n\t" // zero all GP regs
" li 4,0\n\t"
" li 5,0\n\t"
" li 6,0\n\t"
" li 7,0\n\t"
" li 8,0\n\t"
" li 9,0\n\t"
" li 10,0\n\t"
" li 11,0\n\t"
" li 12,0\n\t"
" li 13,0\n\t"
" li 14,0\n\t"
" li 15,0\n\t"
" li 16,0\n\t"
" li 17,0\n\t"
" li 18,0\n\t"
" li 19,0\n\t"
" li 20,0\n\t"
" li 21,0\n\t"
" li 22,0\n\t"
" li 23,0\n\t"
" li 24,0\n\t"
" li 25,0\n\t"
" li 26,0\n\t"
" li 27,0\n\t"
" li 28,0\n\t"
" li 29,0\n\t"
" li 30,0\n\t"
" li 31,0\n\t"
" mtxer 0\n\t" // CAB: Need this?
" mtcr 0\n\t" // CAB: Need this?
" bctr\n\t" // jump to dst
" trap\n" // should never get here
#else
// ppc64le_linux
" .align 2\n"
" .globl vgModuleLocal_call_on_new_stack_0_1\n"
"vgModuleLocal_call_on_new_stack_0_1:\n"
" .type .vgModuleLocal_call_on_new_stack_0_1,@function\n"
"#if _CALL_ELF == 2 \n"
"0: addis 2,12,.TOC.-0b@ha\n"
" addi 2,2,.TOC.-0b@l\n"
"#endif\n"
".localentry vgModuleLocal_call_on_new_stack_0_1, .-vgModuleLocal_call_on_new_stack_0_1\n"
" mr %r1,%r3\n\t" // stack to %sp
" mtlr %r4\n\t" // retaddr to %lr
" mtctr %r5\n\t" // f_ptr to count reg
" mr %r3,%r6\n\t" // arg1 to %r3
" li 0,0\n\t" // zero all GP regs
" li 4,0\n\t"
" li 5,0\n\t"
" li 6,0\n\t"
" li 7,0\n\t"
" li 8,0\n\t"
" li 9,0\n\t"
" li 10,0\n\t"
" li 11,0\n\t"
" li 12,0\n\t"
" li 13,0\n\t"
" li 14,0\n\t"
" li 15,0\n\t"
" li 16,0\n\t"
" li 17,0\n\t"
" li 18,0\n\t"
" li 19,0\n\t"
" li 20,0\n\t"
" li 21,0\n\t"
" li 22,0\n\t"
" li 23,0\n\t"
" li 24,0\n\t"
" li 25,0\n\t"
" li 26,0\n\t"
" li 27,0\n\t"
" li 28,0\n\t"
" li 29,0\n\t"
" li 30,0\n\t"
" li 31,0\n\t"
" mtxer 0\n\t" // CAB: Need this?
" mtcr 0\n\t" // CAB: Need this?
" bctr\n\t" // jump to dst
" trap\n" // should never get here
#endif
);
/*
Perform a clone system call. clone is strange because it has
fork()-like return-twice semantics, so it needs special
handling here.
Upon entry, we have:
word (fn)(void*) in r3
void* child_stack in r4
word flags in r5
void* arg in r6
pid_t* child_tid in r7
pid_t* parent_tid in r8
void* ??? in r9
Note: r3 contains fn desc ptr, not fn ptr -- p_fn = p_fn_desc[0]
System call requires:
int $__NR_clone in r0 (sc number)
int flags in r3 (sc arg1)
void* child_stack in r4 (sc arg2)
pid_t* parent_tid in r5 (sc arg3)
?? child_tls in r6 (sc arg4)
pid_t* child_tid in r7 (sc arg5)
void* ??? in r8 (sc arg6)
Returns a ULong encoded as: top half is %cr following syscall,
low half is syscall return value (r3).
*/
#define __NR_CLONE VG_STRINGIFY(__NR_clone)
#define __NR_EXIT VG_STRINGIFY(__NR_exit)
extern
ULong do_syscall_clone_ppc64_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void/*vki_modify_ldt_t*/ * );
asm(
#if defined(VGP_ppc64be_linux)
" .align 2\n"
" .globl do_syscall_clone_ppc64_linux\n"
" .section \".opd\",\"aw\"\n"
" .align 3\n"
"do_syscall_clone_ppc64_linux:\n"
" .quad .do_syscall_clone_ppc64_linux,.TOC.@tocbase,0\n"
" .previous\n"
" .type .do_syscall_clone_ppc64_linux,@function\n"
" .globl .do_syscall_clone_ppc64_linux\n"
".do_syscall_clone_ppc64_linux:\n"
" stdu 1,-64(1)\n"
" std 29,40(1)\n"
" std 30,48(1)\n"
" std 31,56(1)\n"
" mr 30,3\n" // preserve fn
" mr 31,6\n" // preserve arg
// setup child stack
" rldicr 4,4, 0,59\n" // trim sp to multiple of 16 bytes
// (r4 &= ~0xF)
" li 0,0\n"
" stdu 0,-32(4)\n" // make initial stack frame
" mr 29,4\n" // preserve sp
// setup syscall
" li 0,"__NR_CLONE"\n" // syscall number
" mr 3,5\n" // syscall arg1: flags
// r4 already setup // syscall arg2: child_stack
" mr 5,8\n" // syscall arg3: parent_tid
" mr 6,13\n" // syscall arg4: REAL THREAD tls
" mr 7,7\n" // syscall arg5: child_tid
" mr 8,8\n" // syscall arg6: ????
" mr 9,9\n" // syscall arg7: ????
" sc\n" // clone()
" mfcr 4\n" // CR now in low half r4
" sldi 4,4,32\n" // CR now in hi half r4
" sldi 3,3,32\n"
" srdi 3,3,32\n" // zero out hi half r3
" or 3,3,4\n" // r3 = CR : syscall-retval
" cmpwi 3,0\n" // child if retval == 0 (note, cmpw)
" bne 1f\n" // jump if !child
/* CHILD - call thread function */
/* Note: 2.4 kernel doesn't set the child stack pointer,
so we do it here.
That does leave a small window for a signal to be delivered
on the wrong stack, unfortunately. */
" mr 1,29\n"
" ld 30, 0(30)\n" // convert fn desc ptr to fn ptr
" mtctr 30\n" // ctr reg = fn
" mr 3,31\n" // r3 = arg
" bctrl\n" // call fn()
// exit with result
" li 0,"__NR_EXIT"\n"
" sc\n"
// Exit returned?!
" .long 0\n"
// PARENT or ERROR - return
"1: ld 29,40(1)\n"
" ld 30,48(1)\n"
" ld 31,56(1)\n"
" addi 1,1,64\n"
" blr\n"
#else
" .align 2\n"
" .globl do_syscall_clone_ppc64_linux\n"
" .type do_syscall_clone_ppc64_linux,@function\n"
"do_syscall_clone_ppc64_linux:\n"
" .globl .do_syscall_clone_ppc64_linux\n"
".do_syscall_clone_ppc64_linux:\n"
"#if _CALL_ELF == 2 \n"
"0: addis 2,12,.TOC.-0b@ha \n"
" addi 2,2,.TOC.-0b@l \n"
"#endif \n"
" .localentry do_syscall_clone_ppc64_linux, .-do_syscall_clone_ppc64_linux \n"
" stdu 1,-64(1)\n"
" std 29,40(1)\n"
" std 30,48(1)\n"
" std 31,56(1)\n"
" mr 30,3\n" // preserve fn
" mr 31,6\n" // preserve arg
// setup child stack
" rldicr 4,4, 0,59\n" // trim sp to multiple of 16 bytes
// (r4 &= ~0xF)
" li 0,0\n"
" stdu 0,-32(4)\n" // make initial stack frame
" mr 29,4\n" // preserve sp
// setup syscall
" li 0,"__NR_CLONE"\n" // syscall number
" mr 3,5\n" // syscall arg1: flags
// r4 already setup // syscall arg2: child_stack
" mr 5,8\n" // syscall arg3: parent_tid
" mr 6,13\n" // syscall arg4: REAL THREAD tls
" mr 7,7\n" // syscall arg5: child_tid
" mr 8,8\n" // syscall arg6: ????
" mr 9,9\n" // syscall arg7: ????
" sc\n" // clone()
" mfcr 4\n" // CR now in low half r4
" sldi 4,4,32\n" // CR now in hi half r4
" sldi 3,3,32\n"
" srdi 3,3,32\n" // zero out hi half r3
" or 3,3,4\n" // r3 = CR : syscall-retval
" cmpwi 3,0\n" // child if retval == 0 (note, cmpw)
" bne 1f\n" // jump if !child
/* CHILD - call thread function */
/* Note: 2.4 kernel doesn't set the child stack pointer,
so we do it here.
That does leave a small window for a signal to be delivered
on the wrong stack, unfortunately. */
" mr 1,29\n"
" mtctr 30\n" // ctr reg = fn
" mr 3,31\n" // r3 = arg
" bctrl\n" // call fn()
// exit with result
" li 0,"__NR_EXIT"\n"
" sc\n"
// Exit returned?!
" .long 0\n"
// PARENT or ERROR - return
"1: ld 29,40(1)\n"
" ld 30,48(1)\n"
" ld 31,56(1)\n"
" addi 1,1,64\n"
" blr\n"
#endif
);
#undef __NR_CLONE
#undef __NR_EXIT
// forward declarations
static void setup_child ( ThreadArchState*, ThreadArchState* );
/*
When a client clones, we need to keep track of the new thread. This means:
1. allocate a ThreadId+ThreadState+stack for the the thread
2. initialize the thread's new VCPU state
3. create the thread using the same args as the client requested,
but using the scheduler entrypoint for IP, and a separate stack
for SP.
*/
static SysRes do_clone ( ThreadId ptid,
UInt flags, Addr sp,
Int *parent_tidptr,
Int *child_tidptr,
Addr child_tls)
{
const Bool debug = False;
ThreadId ctid = VG_(alloc_ThreadState)();
ThreadState* ptst = VG_(get_ThreadState)(ptid);
ThreadState* ctst = VG_(get_ThreadState)(ctid);
ULong word64;
UWord* stack;
SysRes res;
vki_sigset_t blockall, savedmask;
VG_(sigfillset)(&blockall);
vg_assert(VG_(is_running_thread)(ptid));
vg_assert(VG_(is_valid_tid)(ctid));
stack = (UWord*)ML_(allocstack)(ctid);
if (stack == NULL) {
res = VG_(mk_SysRes_Error)( VKI_ENOMEM );
goto out;
}
//? /* make a stack frame */
//? stack -= 16;
//? *(UWord *)stack = 0;
/* Copy register state
Both parent and child return to the same place, and the code
following the clone syscall works out which is which, so we
don't need to worry about it.
The parent gets the child's new tid returned from clone, but the
child gets 0.
If the clone call specifies a NULL SP for the new thread, then
it actually gets a copy of the parent's SP.
The child's TLS register (r2) gets set to the tlsaddr argument
if the CLONE_SETTLS flag is set.
*/
setup_child( &ctst->arch, &ptst->arch );
/* Make sys_clone appear to have returned Success(0) in the
child. */
{ UInt old_cr = LibVEX_GuestPPC64_get_CR( &ctst->arch.vex );
/* %r3 = 0 */
ctst->arch.vex.guest_GPR3 = 0;
/* %cr0.so = 0 */
LibVEX_GuestPPC64_put_CR( old_cr & ~(1<<28), &ctst->arch.vex );
}
if (sp != 0)
ctst->arch.vex.guest_GPR1 = sp;
ctst->os_state.parent = ptid;
/* inherit signal mask */
ctst->sig_mask = ptst->sig_mask;
ctst->tmp_sig_mask = ptst->sig_mask;
/* Start the child with its threadgroup being the same as the
parent's. This is so that any exit_group calls that happen
after the child is created but before it sets its
os_state.threadgroup field for real (in thread_wrapper in
syswrap-linux.c), really kill the new thread. a.k.a this avoids
a race condition in which the thread is unkillable (via
exit_group) because its threadgroup is not set. The race window
is probably only a few hundred or a few thousand cycles long.
See #226116. */
ctst->os_state.threadgroup = ptst->os_state.threadgroup;
ML_(guess_and_register_stack) (sp, ctst);
/* Assume the clone will succeed, and tell any tool that wants to
know that this thread has come into existence. If the clone
fails, we'll send out a ll_exit notification for it at the out:
label below, to clean up. */
vg_assert(VG_(owns_BigLock_LL)(ptid));
VG_TRACK ( pre_thread_ll_create, ptid, ctid );
if (flags & VKI_CLONE_SETTLS) {
if (debug)
VG_(printf)("clone child has SETTLS: tls at %#lx\n", child_tls);
ctst->arch.vex.guest_GPR13 = child_tls;
}
flags &= ~VKI_CLONE_SETTLS;
/* start the thread with everything blocked */
VG_(sigprocmask)(VKI_SIG_SETMASK, &blockall, &savedmask);
/* Create the new thread */
word64 = do_syscall_clone_ppc64_linux(
ML_(start_thread_NORETURN),
stack, flags, &VG_(threads)[ctid],
child_tidptr, parent_tidptr, NULL
);
/* Low half word64 is syscall return value. Hi half is
the entire CR, from which we need to extract CR0.SO. */
/* VG_(printf)("word64 = 0x%llx\n", word64); */
res = VG_(mk_SysRes_ppc64_linux)(
/*val*/(UInt)(word64 & 0xFFFFFFFFULL),
/*errflag*/ (UInt)((word64 >> (32+28)) & 1)
);
VG_(sigprocmask)(VKI_SIG_SETMASK, &savedmask, NULL);
out:
if (sr_isError(res)) {
/* clone failed */
VG_(cleanup_thread)(&ctst->arch);
ctst->status = VgTs_Empty;
/* oops. Better tell the tool the thread exited in a hurry :-) */
VG_TRACK( pre_thread_ll_exit, ctid );
}
return res;
}
/* ---------------------------------------------------------------------
More thread stuff
------------------------------------------------------------------ */
void VG_(cleanup_thread) ( ThreadArchState* arch )
{
}
void setup_child ( /*OUT*/ ThreadArchState *child,
/*IN*/ ThreadArchState *parent )
{
/* We inherit our parent's guest state. */
child->vex = parent->vex;
child->vex_shadow1 = parent->vex_shadow1;
child->vex_shadow2 = parent->vex_shadow2;
}
/* ---------------------------------------------------------------------
PRE/POST wrappers for ppc64/Linux-specific syscalls
------------------------------------------------------------------ */
#define PRE(name) DEFN_PRE_TEMPLATE(ppc64_linux, name)
#define POST(name) DEFN_POST_TEMPLATE(ppc64_linux, name)
/* Add prototypes for the wrappers declared here, so that gcc doesn't
harass us for not having prototypes. Really this is a kludge --
the right thing to do is to make these wrappers 'static' since they
aren't visible outside this file, but that requires even more macro
magic. */
DECL_TEMPLATE(ppc64_linux, sys_mmap);
//zz DECL_TEMPLATE(ppc64_linux, sys_mmap2);
//zz DECL_TEMPLATE(ppc64_linux, sys_stat64);
//zz DECL_TEMPLATE(ppc64_linux, sys_lstat64);
//zz DECL_TEMPLATE(ppc64_linux, sys_fstat64);
DECL_TEMPLATE(ppc64_linux, sys_clone);
//zz DECL_TEMPLATE(ppc64_linux, sys_sigreturn);
DECL_TEMPLATE(ppc64_linux, sys_rt_sigreturn);
DECL_TEMPLATE(ppc64_linux, sys_fadvise64);
PRE(sys_mmap)
{
SysRes r;
PRINT("sys_mmap ( %#lx, %llu, %ld, %ld, %ld, %ld )",
ARG1, (ULong)ARG2, ARG3, ARG4, ARG5, ARG6 );
PRE_REG_READ6(long, "mmap",
unsigned long, start, unsigned long, length,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, unsigned long, offset);
r = ML_(generic_PRE_sys_mmap)( tid, ARG1, ARG2, ARG3, ARG4, ARG5,
(Off64T)ARG6 );
SET_STATUS_from_SysRes(r);
}
//zz PRE(sys_mmap2)
//zz {
//zz SysRes r;
//zz
//zz // Exactly like old_mmap() except:
//zz // - the file offset is specified in 4K units rather than bytes,
//zz // so that it can be used for files bigger than 2^32 bytes.
//zz PRINT("sys_mmap2 ( %p, %llu, %d, %d, %d, %d )",
//zz ARG1, (ULong)ARG2, ARG3, ARG4, ARG5, ARG6 );
//zz PRE_REG_READ6(long, "mmap2",
//zz unsigned long, start, unsigned long, length,
//zz unsigned long, prot, unsigned long, flags,
//zz unsigned long, fd, unsigned long, offset);
//zz
//zz r = ML_(generic_PRE_sys_mmap)( tid, ARG1, ARG2, ARG3, ARG4, ARG5,
//zz 4096 * (Off64T)ARG6 );
//zz SET_STATUS_from_SysRes(r);
//zz }
//zz
//zz // XXX: lstat64/fstat64/stat64 are generic, but not necessarily
//zz // applicable to every architecture -- I think only to 32-bit archs.
//zz // We're going to need something like linux/core_os32.h for such
//zz // things, eventually, I think. --njn
//zz PRE(sys_stat64)
//zz {
//zz PRINT("sys_stat64 ( %p, %p )",ARG1,ARG2);
//zz PRE_REG_READ2(long, "stat64", char *, file_name, struct stat64 *, buf);
//zz PRE_MEM_RASCIIZ( "stat64(file_name)", ARG1 );
//zz PRE_MEM_WRITE( "stat64(buf)", ARG2, sizeof(struct vki_stat64) );
//zz }
//zz
//zz POST(sys_stat64)
//zz {
//zz POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) );
//zz }
//zz
//zz PRE(sys_lstat64)
//zz {
//zz PRINT("sys_lstat64 ( %p(%s), %p )",ARG1,ARG1,ARG2);
//zz PRE_REG_READ2(long, "lstat64", char *, file_name, struct stat64 *, buf);
//zz PRE_MEM_RASCIIZ( "lstat64(file_name)", ARG1 );
//zz PRE_MEM_WRITE( "lstat64(buf)", ARG2, sizeof(struct vki_stat64) );
//zz }
//zz
//zz POST(sys_lstat64)
//zz {
//zz vg_assert(SUCCESS);
//zz if (RES == 0) {
//zz POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) );
//zz }
//zz }
//zz
//zz PRE(sys_fstat64)
//zz {
//zz PRINT("sys_fstat64 ( %d, %p )",ARG1,ARG2);
//zz PRE_REG_READ2(long, "fstat64", unsigned long, fd, struct stat64 *, buf);
//zz PRE_MEM_WRITE( "fstat64(buf)", ARG2, sizeof(struct vki_stat64) );
//zz }
//zz
//zz POST(sys_fstat64)
//zz {
//zz POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) );
//zz }
PRE(sys_clone)
{
UInt cloneflags;
PRINT("sys_clone ( %lx, %#lx, %#lx, %#lx, %#lx )",ARG1,ARG2,ARG3,ARG4,ARG5);
PRE_REG_READ5(int, "clone",
unsigned long, flags,
void *, child_stack,
int *, parent_tidptr,
void *, child_tls,
int *, child_tidptr);
if (ARG1 & VKI_CLONE_PARENT_SETTID) {
PRE_MEM_WRITE("clone(parent_tidptr)", ARG3, sizeof(Int));
if (!VG_(am_is_valid_for_client)(ARG3, sizeof(Int),
VKI_PROT_WRITE)) {
SET_STATUS_Failure( VKI_EFAULT );
return;
}
}
if (ARG1 & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID)) {
PRE_MEM_WRITE("clone(child_tidptr)", ARG5, sizeof(Int));
if (!VG_(am_is_valid_for_client)(ARG5, sizeof(Int),
VKI_PROT_WRITE)) {
SET_STATUS_Failure( VKI_EFAULT );
return;
}
}
cloneflags = ARG1;
if (!ML_(client_signal_OK)(ARG1 & VKI_CSIGNAL)) {
SET_STATUS_Failure( VKI_EINVAL );
return;
}
/* Only look at the flags we really care about */
switch (cloneflags & (VKI_CLONE_VM | VKI_CLONE_FS
| VKI_CLONE_FILES | VKI_CLONE_VFORK)) {
case VKI_CLONE_VM | VKI_CLONE_FS | VKI_CLONE_FILES:
/* thread creation */
SET_STATUS_from_SysRes(
do_clone(tid,
ARG1, /* flags */
(Addr)ARG2, /* child SP */
(Int *)ARG3, /* parent_tidptr */
(Int *)ARG5, /* child_tidptr */
(Addr)ARG4)); /* child_tls */
break;
case VKI_CLONE_VFORK | VKI_CLONE_VM: /* vfork */
/* FALLTHROUGH - assume vfork == fork */
cloneflags &= ~(VKI_CLONE_VFORK | VKI_CLONE_VM);
case 0: /* plain fork */
SET_STATUS_from_SysRes(
ML_(do_fork_clone)(tid,
cloneflags, /* flags */
(Int *)ARG3, /* parent_tidptr */
(Int *)ARG5)); /* child_tidptr */
break;
default:
/* should we just ENOSYS? */
VG_(message)(Vg_UserMsg, "Unsupported clone() flags: 0x%lx\n", ARG1);
VG_(message)(Vg_UserMsg, "\n");
VG_(message)(Vg_UserMsg, "The only supported clone() uses are:\n");
VG_(message)(Vg_UserMsg, " - via a threads library (LinuxThreads or NPTL)\n");
VG_(message)(Vg_UserMsg, " - via the implementation of fork or vfork\n");
VG_(unimplemented)
("Valgrind does not support general clone().");
}
if (SUCCESS) {
if (ARG1 & VKI_CLONE_PARENT_SETTID)
POST_MEM_WRITE(ARG3, sizeof(Int));
if (ARG1 & (VKI_CLONE_CHILD_SETTID | VKI_CLONE_CHILD_CLEARTID))
POST_MEM_WRITE(ARG5, sizeof(Int));
/* Thread creation was successful; let the child have the chance
to run */
*flags |= SfYieldAfter;
}
}
PRE(sys_fadvise64)
{
PRINT("sys_fadvise64 ( %ld, %ld, %lu, %ld )", ARG1,ARG2,ARG3,ARG4);
PRE_REG_READ4(long, "fadvise64",
int, fd, vki_loff_t, offset, vki_size_t, len, int, advice);
}
PRE(sys_rt_sigreturn)
{
/* See comments on PRE(sys_rt_sigreturn) in syswrap-amd64-linux.c for
an explanation of what follows. */
//ThreadState* tst;
PRINT("sys_rt_sigreturn ( )");
vg_assert(VG_(is_valid_tid)(tid));
vg_assert(tid >= 1 && tid < VG_N_THREADS);
vg_assert(VG_(is_running_thread)(tid));
///* Adjust esp to point to start of frame; skip back up over handler
// ret addr */
//tst = VG_(get_ThreadState)(tid);
//tst->arch.vex.guest_ESP -= sizeof(Addr);
// Should we do something equivalent on ppc64-linux? Who knows.
///* This is only so that the EIP is (might be) useful to report if
// something goes wrong in the sigreturn */
//ML_(fixup_guest_state_to_restart_syscall)(&tst->arch);
// Should we do something equivalent on ppc64? Who knows.
/* Restore register state from frame and remove it */
VG_(sigframe_destroy)(tid, True);
/* Tell the driver not to update the guest state with the "result",
and set a bogus result to keep it happy. */
*flags |= SfNoWriteResult;
SET_STATUS_Success(0);
/* Check to see if any signals arose as a result of this. */
*flags |= SfPollAfter;
}
#undef PRE
#undef POST
/* ---------------------------------------------------------------------
The ppc64/Linux syscall table
------------------------------------------------------------------ */
/* Add an ppc64-linux specific wrapper to a syscall table. */
#define PLAX_(sysno, name) WRAPPER_ENTRY_X_(ppc64_linux, sysno, name)
#define PLAXY(sysno, name) WRAPPER_ENTRY_XY(ppc64_linux, sysno, name)
// This table maps from __NR_xxx syscall numbers (from
// linux/include/asm-ppc/unistd.h) to the appropriate PRE/POST sys_foo()
// wrappers on ppc64 (as per sys_call_table in linux/arch/ppc/kernel/entry.S).
//
// For those syscalls not handled by Valgrind, the annotation indicate its
// arch/OS combination, eg. */* (generic), */Linux (Linux only), ?/?
// (unknown).
static SyscallTableEntry syscall_table[] = {
// _____(__NR_restart_syscall, sys_restart_syscall), // 0
GENX_(__NR_exit, sys_exit), // 1
GENX_(__NR_fork, sys_fork), // 2
GENXY(__NR_read, sys_read), // 3
GENX_(__NR_write, sys_write), // 4
GENXY(__NR_open, sys_open), // 5
GENXY(__NR_close, sys_close), // 6
GENXY(__NR_waitpid, sys_waitpid), // 7
GENXY(__NR_creat, sys_creat), // 8
GENX_(__NR_link, sys_link), // 9
GENX_(__NR_unlink, sys_unlink), // 10
GENX_(__NR_execve, sys_execve), // 11
GENX_(__NR_chdir, sys_chdir), // 12
GENXY(__NR_time, sys_time), // 13
GENX_(__NR_mknod, sys_mknod), // 14
GENX_(__NR_chmod, sys_chmod), // 15
GENX_(__NR_lchown, sys_lchown), // 16
// _____(__NR_break, sys_break), // 17
// _____(__NR_oldstat, sys_oldstat), // 18
LINX_(__NR_lseek, sys_lseek), // 19
GENX_(__NR_getpid, sys_getpid), // 20
LINX_(__NR_mount, sys_mount), // 21
// _____(__NR_umount, sys_umount), // 22
GENX_(__NR_setuid, sys_setuid), // 23
GENX_(__NR_getuid, sys_getuid), // 24
// _____(__NR_stime, sys_stime), // 25
// When ptrace is supported, memcheck/tests/linux/getregset should be enabled
// _____(__NR_ptrace, sys_ptrace), // 26
GENX_(__NR_alarm, sys_alarm), // 27
// _____(__NR_oldfstat, sys_oldfstat), // 28
GENX_(__NR_pause, sys_pause), // 29
LINX_(__NR_utime, sys_utime), // 30
// _____(__NR_stty, sys_stty), // 31
// _____(__NR_gtty, sys_gtty), // 32
GENX_(__NR_access, sys_access), // 33
// _____(__NR_nice, sys_nice), // 34
// _____(__NR_ftime, sys_ftime), // 35
// _____(__NR_sync, sys_sync), // 36
GENX_(__NR_kill, sys_kill), // 37
GENX_(__NR_rename, sys_rename), // 38
GENX_(__NR_mkdir, sys_mkdir), // 39
GENX_(__NR_rmdir, sys_rmdir), // 40
GENXY(__NR_dup, sys_dup), // 41
LINXY(__NR_pipe, sys_pipe), // 42
GENXY(__NR_times, sys_times), // 43
// _____(__NR_prof, sys_prof), // 44
GENX_(__NR_brk, sys_brk), // 45
GENX_(__NR_setgid, sys_setgid), // 46
GENX_(__NR_getgid, sys_getgid), // 47
// _____(__NR_signal, sys_signal), // 48
GENX_(__NR_geteuid, sys_geteuid), // 49
GENX_(__NR_getegid, sys_getegid), // 50
// _____(__NR_acct, sys_acct), // 51
LINX_(__NR_umount2, sys_umount), // 52
// _____(__NR_lock, sys_lock), // 53
LINXY(__NR_ioctl, sys_ioctl), // 54
LINXY(__NR_fcntl, sys_fcntl), // 55
// _____(__NR_mpx, sys_mpx), // 56
GENX_(__NR_setpgid, sys_setpgid), // 57
// _____(__NR_ulimit, sys_ulimit), // 58
// _____(__NR_oldolduname, sys_oldolduname), // 59
GENX_(__NR_umask, sys_umask), // 60
GENX_(__NR_chroot, sys_chroot), // 61
// _____(__NR_ustat, sys_ustat), // 62
GENXY(__NR_dup2, sys_dup2), // 63
GENX_(__NR_getppid, sys_getppid), // 64
GENX_(__NR_getpgrp, sys_getpgrp), // 65
GENX_(__NR_setsid, sys_setsid), // 66
// _____(__NR_sigaction, sys_sigaction), // 67
// _____(__NR_sgetmask, sys_sgetmask), // 68
// _____(__NR_ssetmask, sys_ssetmask), // 69
GENX_(__NR_setreuid, sys_setreuid), // 70
GENX_(__NR_setregid, sys_setregid), // 71
// _____(__NR_sigsuspend, sys_sigsuspend), // 72
// _____(__NR_sigpending, sys_sigpending), // 73
// _____(__NR_sethostname, sys_sethostname), // 74
GENX_(__NR_setrlimit, sys_setrlimit), // 75
// _____(__NR_getrlimit, sys_getrlimit), // 76
GENXY(__NR_getrusage, sys_getrusage), // 77
GENXY(__NR_gettimeofday, sys_gettimeofday), // 78
// _____(__NR_settimeofday, sys_settimeofday), // 79
GENXY(__NR_getgroups, sys_getgroups), // 80
GENX_(__NR_setgroups, sys_setgroups), // 81
// _____(__NR_select, sys_select), // 82
GENX_(__NR_symlink, sys_symlink), // 83
// _____(__NR_oldlstat, sys_oldlstat), // 84
GENX_(__NR_readlink, sys_readlink), // 85
// _____(__NR_uselib, sys_uselib), // 86
// _____(__NR_swapon, sys_swapon), // 87
// _____(__NR_reboot, sys_reboot), // 88
// _____(__NR_readdir, sys_readdir), // 89
PLAX_(__NR_mmap, sys_mmap), // 90
GENXY(__NR_munmap, sys_munmap), // 91
GENX_(__NR_truncate, sys_truncate), // 92
GENX_(__NR_ftruncate, sys_ftruncate), // 93
GENX_(__NR_fchmod, sys_fchmod), // 94
GENX_(__NR_fchown, sys_fchown), // 95
GENX_(__NR_getpriority, sys_getpriority), // 96
GENX_(__NR_setpriority, sys_setpriority), // 97
// _____(__NR_profil, sys_profil), // 98
GENXY(__NR_statfs, sys_statfs), // 99
GENXY(__NR_fstatfs, sys_fstatfs), // 100
// _____(__NR_ioperm, sys_ioperm), // 101
LINXY(__NR_socketcall, sys_socketcall), // 102
LINXY(__NR_syslog, sys_syslog), // 103
GENXY(__NR_setitimer, sys_setitimer), // 104
GENXY(__NR_getitimer, sys_getitimer), // 105
GENXY(__NR_stat, sys_newstat), // 106
GENXY(__NR_lstat, sys_newlstat), // 107
GENXY(__NR_fstat, sys_newfstat), // 108
// _____(__NR_olduname, sys_olduname), // 109
// _____(__NR_iopl, sys_iopl), // 110
LINX_(__NR_vhangup, sys_vhangup), // 111
// _____(__NR_idle, sys_idle), // 112
// _____(__NR_vm86, sys_vm86), // 113
GENXY(__NR_wait4, sys_wait4), // 114
// _____(__NR_swapoff, sys_swapoff), // 115
LINXY(__NR_sysinfo, sys_sysinfo), // 116
LINXY(__NR_ipc, sys_ipc), // 117
GENX_(__NR_fsync, sys_fsync), // 118
// _____(__NR_sigreturn, sys_sigreturn), // 119
PLAX_(__NR_clone, sys_clone), // 120
// _____(__NR_setdomainname, sys_setdomainname), // 121
GENXY(__NR_uname, sys_newuname), // 122
// _____(__NR_modify_ldt, sys_modify_ldt), // 123
LINXY(__NR_adjtimex, sys_adjtimex), // 124
GENXY(__NR_mprotect, sys_mprotect), // 125
// _____(__NR_sigprocmask, sys_sigprocmask), // 126
GENX_(__NR_create_module, sys_ni_syscall), // 127
LINX_(__NR_init_module, sys_init_module), // 128
LINX_(__NR_delete_module, sys_delete_module), // 129
// _____(__NR_get_kernel_syms, sys_get_kernel_syms), // 130
// _____(__NR_quotactl, sys_quotactl), // 131
GENX_(__NR_getpgid, sys_getpgid), // 132
GENX_(__NR_fchdir, sys_fchdir), // 133
// _____(__NR_bdflush, sys_bdflush), // 134
// _____(__NR_sysfs, sys_sysfs), // 135
LINX_(__NR_personality, sys_personality), // 136
// _____(__NR_afs_syscall, sys_afs_syscall), // 137
LINX_(__NR_setfsuid, sys_setfsuid), // 138
LINX_(__NR_setfsgid, sys_setfsgid), // 139
LINXY(__NR__llseek, sys_llseek), // 140
GENXY(__NR_getdents, sys_getdents), // 141
GENX_(__NR__newselect, sys_select), // 142
GENX_(__NR_flock, sys_flock), // 143
GENX_(__NR_msync, sys_msync), // 144
GENXY(__NR_readv, sys_readv), // 145
GENX_(__NR_writev, sys_writev), // 146
// _____(__NR_getsid, sys_getsid), // 147
GENX_(__NR_fdatasync, sys_fdatasync), // 148
LINXY(__NR__sysctl, sys_sysctl), // 149
GENX_(__NR_mlock, sys_mlock), // 150
GENX_(__NR_munlock, sys_munlock), // 151
GENX_(__NR_mlockall, sys_mlockall), // 152
LINX_(__NR_munlockall, sys_munlockall), // 153
LINXY(__NR_sched_setparam, sys_sched_setparam), // 154
LINXY(__NR_sched_getparam, sys_sched_getparam), // 155
LINX_(__NR_sched_setscheduler, sys_sched_setscheduler), // 156
LINX_(__NR_sched_getscheduler, sys_sched_getscheduler), // 157
LINX_(__NR_sched_yield, sys_sched_yield), // 158
LINX_(__NR_sched_get_priority_max, sys_sched_get_priority_max),// 159
LINX_(__NR_sched_get_priority_min, sys_sched_get_priority_min),// 160
LINXY(__NR_sched_rr_get_interval, sys_sched_rr_get_interval), // 161
GENXY(__NR_nanosleep, sys_nanosleep), // 162
GENX_(__NR_mremap, sys_mremap), // 163
LINX_(__NR_setresuid, sys_setresuid), // 164
LINXY(__NR_getresuid, sys_getresuid), // 165
// _____(__NR_query_module, sys_query_module), // 166
GENXY(__NR_poll, sys_poll), // 167
// _____(__NR_nfsservctl, sys_nfsservctl), // 168
LINX_(__NR_setresgid, sys_setresgid), // 169
LINXY(__NR_getresgid, sys_getresgid), // 170
LINXY(__NR_prctl, sys_prctl), // 171
PLAX_(__NR_rt_sigreturn, sys_rt_sigreturn), // 172
LINXY(__NR_rt_sigaction, sys_rt_sigaction), // 173
LINXY(__NR_rt_sigprocmask, sys_rt_sigprocmask), // 174
LINXY(__NR_rt_sigpending, sys_rt_sigpending), // 175
LINXY(__NR_rt_sigtimedwait, sys_rt_sigtimedwait), // 176
LINXY(__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo), // 177
LINX_(__NR_rt_sigsuspend, sys_rt_sigsuspend), // 178
GENXY(__NR_pread64, sys_pread64), // 179
GENX_(__NR_pwrite64, sys_pwrite64), // 180
GENX_(__NR_chown, sys_chown), // 181
GENXY(__NR_getcwd, sys_getcwd), // 182
LINXY(__NR_capget, sys_capget), // 183
LINX_(__NR_capset, sys_capset), // 184
GENXY(__NR_sigaltstack, sys_sigaltstack), // 185
LINXY(__NR_sendfile, sys_sendfile), // 186
// _____(__NR_getpmsg, sys_getpmsg), // 187
// _____(__NR_putpmsg, sys_putpmsg), // 188
GENX_(__NR_vfork, sys_fork), // 189 treat as fork
GENXY(__NR_ugetrlimit, sys_getrlimit), // 190
LINX_(__NR_readahead, sys_readahead), // 191
// /* #define __NR_mmap2 192 32bit only */
// /* #define __NR_truncate64 193 32bit only */
// /* #define __NR_ftruncate64 194 32bit only */
// /* #define __NR_stat64 195 32bit only */
// /* #define __NR_lstat64 196 32bit only */
// /* #define __NR_fstat64 197 32bit only */
// _____(__NR_pciconfig_read, sys_pciconfig_read), // 198
// _____(__NR_pciconfig_write, sys_pciconfig_write), // 199
// _____(__NR_pciconfig_iobase, sys_pciconfig_iobase), // 200
// _____(__NR_multiplexer, sys_multiplexer), // 201
GENXY(__NR_getdents64, sys_getdents64), // 202
LINX_(__NR_pivot_root, sys_pivot_root), // 203
LINXY(__NR_fcntl64, sys_fcntl64), // 204 !!!!?? 32bit only */
GENX_(__NR_madvise, sys_madvise), // 205
// _____(__NR_mincore, sys_mincore), // 206
LINX_(__NR_gettid, sys_gettid), // 207
// _____(__NR_tkill, sys_tkill), // 208
LINX_(__NR_setxattr, sys_setxattr), // 209
LINX_(__NR_lsetxattr, sys_lsetxattr), // 210
LINX_(__NR_fsetxattr, sys_fsetxattr), // 211
LINXY(__NR_getxattr, sys_getxattr), // 212
LINXY(__NR_lgetxattr, sys_lgetxattr), // 213
LINXY(__NR_fgetxattr, sys_fgetxattr), // 214
LINXY(__NR_listxattr, sys_listxattr), // 215
LINXY(__NR_llistxattr, sys_llistxattr), // 216
LINXY(__NR_flistxattr, sys_flistxattr), // 217
LINX_(__NR_removexattr, sys_removexattr), // 218
LINX_(__NR_lremovexattr, sys_lremovexattr), // 219
LINX_(__NR_fremovexattr, sys_fremovexattr), // 220
LINXY(__NR_futex, sys_futex), // 221
LINX_(__NR_sched_setaffinity, sys_sched_setaffinity), // 222
LINXY(__NR_sched_getaffinity, sys_sched_getaffinity), // 223
// /* 224 currently unused */
// _____(__NR_tuxcall, sys_tuxcall), // 225
// /* #define __NR_sendfile64 226 32bit only */
LINX_(__NR_io_setup, sys_io_setup), // 227
LINX_(__NR_io_destroy, sys_io_destroy), // 228
LINXY(__NR_io_getevents, sys_io_getevents), // 229
LINX_(__NR_io_submit, sys_io_submit), // 230
LINXY(__NR_io_cancel, sys_io_cancel), // 231
LINX_(__NR_set_tid_address, sys_set_tid_address), // 232
PLAX_(__NR_fadvise64, sys_fadvise64), // 233
LINX_(__NR_exit_group, sys_exit_group), // 234
// _____(__NR_lookup_dcookie, sys_lookup_dcookie), // 235
LINXY(__NR_epoll_create, sys_epoll_create), // 236
LINX_(__NR_epoll_ctl, sys_epoll_ctl), // 237
LINXY(__NR_epoll_wait, sys_epoll_wait), // 238
// _____(__NR_remap_file_pages, sys_remap_file_pages), // 239
LINXY(__NR_timer_create, sys_timer_create), // 240
LINXY(__NR_timer_settime, sys_timer_settime), // 241
LINXY(__NR_timer_gettime, sys_timer_gettime), // 242
LINX_(__NR_timer_getoverrun, sys_timer_getoverrun), // 243
LINX_(__NR_timer_delete, sys_timer_delete), // 244
LINX_(__NR_clock_settime, sys_clock_settime), // 245
LINXY(__NR_clock_gettime, sys_clock_gettime), // 246
LINXY(__NR_clock_getres, sys_clock_getres), // 247
LINXY(__NR_clock_nanosleep, sys_clock_nanosleep), // 248
// _____(__NR_swapcontext, sys_swapcontext), // 249
LINXY(__NR_tgkill, sys_tgkill), // 250
// _____(__NR_utimes, sys_utimes), // 251
// _____(__NR_statfs64, sys_statfs64), // 252
// _____(__NR_fstatfs64, sys_fstatfs64), // 253
// /* #define __NR_fadvise64_64 254 32bit only */
// _____(__NR_rtas, sys_rtas), // 255
// /* Number 256 is reserved for sys_debug_setcontext */
// /* Number 257 is reserved for vserver */
// /* 258 currently unused */
LINX_(__NR_mbind, sys_mbind), // 259
LINXY(__NR_get_mempolicy, sys_get_mempolicy), // 260
LINX_(__NR_set_mempolicy, sys_set_mempolicy), // 261
LINXY(__NR_mq_open, sys_mq_open), // 262
LINX_(__NR_mq_unlink, sys_mq_unlink), // 263
LINX_(__NR_mq_timedsend, sys_mq_timedsend), // 264
LINXY(__NR_mq_timedreceive, sys_mq_timedreceive), // 265
LINX_(__NR_mq_notify, sys_mq_notify), // 266
LINXY(__NR_mq_getsetattr, sys_mq_getsetattr), // 267
// _____(__NR_kexec_load, sys_kexec_load), // 268
LINX_(__NR_add_key, sys_add_key), // 269
LINX_(__NR_request_key, sys_request_key), // 270
LINXY(__NR_keyctl, sys_keyctl), // 271
// _____(__NR_waitid, sys_waitid), // 272
LINX_(__NR_ioprio_set, sys_ioprio_set), // 273
LINX_(__NR_ioprio_get, sys_ioprio_get), // 274
LINX_(__NR_inotify_init, sys_inotify_init), // 275
LINX_(__NR_inotify_add_watch, sys_inotify_add_watch), // 276
LINX_(__NR_inotify_rm_watch, sys_inotify_rm_watch), // 277
LINX_(__NR_pselect6, sys_pselect6), // 280
LINXY(__NR_ppoll, sys_ppoll), // 281
LINXY(__NR_openat, sys_openat), // 286
LINX_(__NR_mkdirat, sys_mkdirat), // 287
LINX_(__NR_mknodat, sys_mknodat), // 288
LINX_(__NR_fchownat, sys_fchownat), // 289
LINX_(__NR_futimesat, sys_futimesat), // 290
LINXY(__NR_newfstatat, sys_newfstatat), // 291
LINX_(__NR_unlinkat, sys_unlinkat), // 292
LINX_(__NR_renameat, sys_renameat), // 293
LINX_(__NR_linkat, sys_linkat), // 294
LINX_(__NR_symlinkat, sys_symlinkat), // 295
LINX_(__NR_readlinkat, sys_readlinkat), // 296
LINX_(__NR_fchmodat, sys_fchmodat), // 297
LINX_(__NR_faccessat, sys_faccessat), // 298
LINX_(__NR_set_robust_list, sys_set_robust_list), // 299
LINXY(__NR_get_robust_list, sys_get_robust_list), // 300
LINXY(__NR_move_pages, sys_move_pages), // 301
LINXY(__NR_getcpu, sys_getcpu), // 302
LINXY(__NR_epoll_pwait, sys_epoll_pwait), // 303
LINX_(__NR_utimensat, sys_utimensat), // 304
LINXY(__NR_signalfd, sys_signalfd), // 305
LINXY(__NR_timerfd_create, sys_timerfd_create), // 306
LINXY(__NR_eventfd, sys_eventfd), // 307
LINX_(__NR_sync_file_range2, sys_sync_file_range2), // 308
LINX_(__NR_fallocate, sys_fallocate), // 309
// LINXY(__NR_subpage_prot, sys_ni_syscall), // 310
LINXY(__NR_timerfd_settime, sys_timerfd_settime), // 311
LINXY(__NR_timerfd_gettime, sys_timerfd_gettime), // 312
LINXY(__NR_signalfd4, sys_signalfd4), // 313
LINXY(__NR_eventfd2, sys_eventfd2), // 314
LINXY(__NR_epoll_create1, sys_epoll_create1), // 315
LINXY(__NR_dup3, sys_dup3), // 316
LINXY(__NR_pipe2, sys_pipe2), // 317
LINXY(__NR_inotify_init1, sys_inotify_init1), // 318
LINXY(__NR_perf_event_open, sys_perf_event_open), // 319
LINXY(__NR_preadv, sys_preadv), // 320
LINX_(__NR_pwritev, sys_pwritev), // 321
LINXY(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo),// 322
LINXY(__NR_recvmmsg, sys_recvmmsg), // 343
LINXY(__NR_accept4, sys_accept4), // 344
LINXY(__NR_clock_adjtime, sys_clock_adjtime), // 347
LINX_(__NR_syncfs, sys_syncfs), // 348
LINXY(__NR_sendmmsg, sys_sendmmsg), // 349
LINXY(__NR_process_vm_readv, sys_process_vm_readv), // 351
LINX_(__NR_process_vm_writev, sys_process_vm_writev),// 352
LINXY(__NR_getrandom, sys_getrandom), // 359
LINXY(__NR_memfd_create, sys_memfd_create) // 360
};
SyscallTableEntry* ML_(get_linux_syscall_entry) ( UInt sysno )
{
const UInt syscall_table_size
= sizeof(syscall_table) / sizeof(syscall_table[0]);
/* Is it in the contiguous initial section of the table? */
if (sysno < syscall_table_size) {
SyscallTableEntry* sys = &syscall_table[sysno];
if (sys->before == NULL)
return NULL; /* no entry */
else
return sys;
}
/* Can't find a wrapper */
return NULL;
}
#endif // defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux)
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/