/*--------------------------------------------------------------------*/
/*--- Platform-specific syscalls stuff. syswrap-mips32-linux.c ----*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2010-2017 RT-RK
mips-valgrind@rt-rk.com
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_mips32_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 "pub_core_transtab.h" // VG_(discard_translations)
#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"
#include "pub_core_debuginfo.h" // VG_(di_notify_*)
#include "pub_core_xarray.h"
#include "pub_core_clientstate.h" // VG_(brk_base), VG_(brk_limit)
#include "pub_core_errormgr.h"
#include "pub_core_gdbserver.h" // VG_(gdbserver)
#include "pub_core_libcfile.h"
#include "pub_core_machine.h" // VG_(get_SP)
#include "pub_core_mallocfree.h"
#include "pub_core_stacktrace.h" // For VG_(get_and_pp_StackTrace)()
#include "pub_core_ume.h"
#include "priv_syswrap-generic.h"
#include "config.h"
#include <errno.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) (Word), Word arg1);
// a0 = stack
// a1 = retaddr
// a2 = f
// a3 = arg1
asm (
".text\n"
".globl vgModuleLocal_call_on_new_stack_0_1\n"
"vgModuleLocal_call_on_new_stack_0_1:\n"
" move $29, $4\n\t" // stack to %sp
" move $31, $5\n\t" // retaddr to $ra
" move $25, $6\n\t" // f to t9/$25
" move $4, $7\n\t" // arg1 to $a0
" li $2, 0\n\t" // zero all GP regs
" li $3, 0\n\t"
" li $5, 0\n\t"
" li $6, 0\n\t"
" li $7, 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"
" jr $25\n\t" // jump to dst
" break 0x7\n" // should never get here
".previous\n"
);
/*
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:
int (fn)(void*) in $a0 0
void* child_stack in $a1 4
int flags in $a2 8
void* arg in $a3 12
pid_t* child_tid in stack 16
pid_t* parent_tid in stack 20
void* tls_ptr in stack 24
System call requires:
int $__NR_clone in $v0
int flags in $a0 0
void* child_stack in $a1 4
pid_t* parent_tid in $a2 8
void* tls_ptr in $a3 12
pid_t* child_tid in stack 16
int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
void *parent_tidptr, void *tls, void *child_tidptr)
Returns an Int encoded in the linux-mips way, not a SysRes.
*/
#define __NR_CLONE VG_STRINGIFY(__NR_clone)
#define __NR_EXIT VG_STRINGIFY(__NR_exit)
// See priv_syswrap-linux.h for arg profile.
asm (
".text\n"
" .globl do_syscall_clone_mips_linux\n"
" do_syscall_clone_mips_linux:\n"
" subu $29,$29,32\n\t"
" sw $31, 0($29)\n\t"
" sw $2, 4($29)\n\t"
" sw $3, 8($29)\n\t"
" sw $30, 12($29)\n\t"
" sw $28, 28($29)\n\t"
/* set up child stack with function and arg */
/* syscall arg 2 child_stack is already in a1 */
" subu $5, $5, 32\n\t" /* make space on stack */
" sw $4, 0($5)\n\t" /* fn */
" sw $7, 4($5)\n\t" /* fn arg */
" sw $6, 8($5)\n\t"
/* get other args to clone */
" move $4, $a2\n\t" /* a0 = flags */
" lw $6, 52($29)\n\t" /* a2 = parent_tid */
" lw $7, 48($29)\n\t" /* a3 = child_tid */
" sw $7, 16($29)\n\t" /* 16(sp) = child_tid */
" lw $7, 56($29)\n\t" /* a3 = tls_ptr */
/* do the system call */
" li $2, " __NR_CLONE "\n\t" /* __NR_clone */
" syscall\n\t"
" nop\n\t"
" bnez $7, .Lerror\n\t"
" nop\n\t"
" beqz $2, .Lstart\n\t"
" nop\n\t"
" lw $31, 0($sp)\n\t"
" nop\n\t"
" lw $30, 12($sp)\n\t"
" nop\n\t"
" addu $29,$29,32\n\t" /* free stack */
" nop\n\t"
" jr $31\n\t"
" nop\n\t"
".Lerror:\n\t"
" li $31, 5\n\t"
" jr $31\n\t"
" nop\n\t"
".Lstart:\n\t"
" lw $4, 4($29)\n\t"
" nop\n\t"
" lw $25, 0($29)\n\t"
" nop\n\t"
" jalr $25\n\t"
" nop\n\t"
" move $4, $2\n\t" /* retval from fn is in $v0 */
" li $2, " __NR_EXIT "\n\t" /* NR_exit */
" syscall\n\t"
" nop\n\t"
" .previous\n"
);
#undef __NR_CLONE
#undef __NR_EXIT
// forward declarations
static SysRes sys_set_tls (ThreadId tid, Addr tlsptr);
static SysRes mips_PRE_sys_mmap (ThreadId tid,
UWord arg1, UWord arg2, UWord arg3,
UWord arg4, UWord arg5, Off64T arg6);
/* ---------------------------------------------------------------------
More thread stuff
------------------------------------------------------------------ */
// MIPS doesn't have any architecture specific thread stuff that
// needs to be cleaned up da li ????!!!!???
void
VG_ (cleanup_thread) (ThreadArchState * arch) { }
SysRes sys_set_tls ( ThreadId tid, Addr tlsptr )
{
VG_(threads)[tid].arch.vex.guest_ULR = tlsptr;
return VG_(mk_SysRes_Success)( 0 );
}
/* ---------------------------------------------------------------------
mips handler for mmap and mmap2
------------------------------------------------------------------ */
static void notify_core_of_mmap(Addr a, SizeT len, UInt prot,
UInt flags, Int fd, Off64T offset)
{
Bool d;
/* 'a' is the return value from a real kernel mmap, hence: */
vg_assert(VG_IS_PAGE_ALIGNED(a));
/* whereas len is whatever the syscall supplied. So: */
len = VG_PGROUNDUP(len);
d = VG_(am_notify_client_mmap)( a, len, prot, flags, fd, offset );
if (d)
VG_(discard_translations)( a, (ULong)len,
"notify_core_of_mmap" );
}
static void notify_tool_of_mmap(Addr a, SizeT len, UInt prot, ULong di_handle)
{
Bool rr, ww, xx;
/* 'a' is the return value from a real kernel mmap, hence: */
vg_assert(VG_IS_PAGE_ALIGNED(a));
/* whereas len is whatever the syscall supplied. So: */
len = VG_PGROUNDUP(len);
rr = toBool(prot & VKI_PROT_READ);
ww = toBool(prot & VKI_PROT_WRITE);
xx = toBool(prot & VKI_PROT_EXEC);
VG_TRACK( new_mem_mmap, a, len, rr, ww, xx, di_handle );
}
/* Based on ML_(generic_PRE_sys_mmap) from syswrap-generic.c.
If we are trying to do mmap with VKI_MAP_SHARED flag we need to align the
start address on VKI_SHMLBA like we did in
VG_(am_mmap_file_float_valgrind_flags)
*/
static SysRes mips_PRE_sys_mmap(ThreadId tid,
UWord arg1, UWord arg2, UWord arg3,
UWord arg4, UWord arg5, Off64T arg6)
{
Addr advised;
SysRes sres;
MapRequest mreq;
Bool mreq_ok;
if (arg2 == 0) {
/* SuSV3 says: If len is zero, mmap() shall fail and no mapping
shall be established. */
return VG_(mk_SysRes_Error)( VKI_EINVAL );
}
if (!VG_IS_PAGE_ALIGNED(arg1)) {
/* zap any misaligned addresses. */
/* SuSV3 says misaligned addresses only cause the MAP_FIXED case
to fail. Here, we catch them all. */
return VG_(mk_SysRes_Error)( VKI_EINVAL );
}
if (!VG_IS_PAGE_ALIGNED(arg6)) {
/* zap any misaligned offsets. */
/* SuSV3 says: The off argument is constrained to be aligned and
sized according to the value returned by sysconf() when
passed _SC_PAGESIZE or _SC_PAGE_SIZE. */
return VG_(mk_SysRes_Error)( VKI_EINVAL );
}
/* Figure out what kind of allocation constraints there are
(fixed/hint/any), and ask aspacem what we should do. */
mreq.start = arg1;
mreq.len = arg2;
if (arg4 & VKI_MAP_FIXED) {
mreq.rkind = MFixed;
} else
if (arg1 != 0) {
mreq.rkind = MHint;
} else {
mreq.rkind = MAny;
}
if ((VKI_SHMLBA > VKI_PAGE_SIZE) && (VKI_MAP_SHARED & arg4)
&& !(VKI_MAP_FIXED & arg4))
mreq.len = arg2 + VKI_SHMLBA - VKI_PAGE_SIZE;
/* Enquire ... */
advised = VG_(am_get_advisory)( &mreq, True/*client*/, &mreq_ok );
if ((VKI_SHMLBA > VKI_PAGE_SIZE) && (VKI_MAP_SHARED & arg4)
&& !(VKI_MAP_FIXED & arg4))
advised = VG_ROUNDUP(advised, VKI_SHMLBA);
if (!mreq_ok) {
/* Our request was bounced, so we'd better fail. */
return VG_(mk_SysRes_Error)( VKI_EINVAL );
}
/* Otherwise we're OK (so far). Install aspacem's choice of
address, and let the mmap go through. */
sres = VG_(am_do_mmap_NO_NOTIFY)(advised, arg2, arg3,
arg4 | VKI_MAP_FIXED,
arg5, arg6);
/* A refinement: it may be that the kernel refused aspacem's choice
of address. If we were originally asked for a hinted mapping,
there is still a last chance: try again at any address.
Hence: */
if (mreq.rkind == MHint && sr_isError(sres)) {
mreq.start = 0;
mreq.len = arg2;
mreq.rkind = MAny;
advised = VG_(am_get_advisory)( &mreq, True/*client*/, &mreq_ok );
if (!mreq_ok) {
/* Our request was bounced, so we'd better fail. */
return VG_(mk_SysRes_Error)( VKI_EINVAL );
}
/* and try again with the kernel */
sres = VG_(am_do_mmap_NO_NOTIFY)(advised, arg2, arg3,
arg4 | VKI_MAP_FIXED,
arg5, arg6);
}
if (!sr_isError(sres)) {
ULong di_handle;
/* Notify aspacem. */
notify_core_of_mmap(
(Addr)sr_Res(sres), /* addr kernel actually assigned */
arg2, /* length */
arg3, /* prot */
arg4, /* the original flags value */
arg5, /* fd */
arg6 /* offset */
);
/* Load symbols? */
di_handle = VG_(di_notify_mmap)( (Addr)sr_Res(sres),
False/*allow_SkFileV*/, (Int)arg5 );
/* Notify the tool. */
notify_tool_of_mmap(
(Addr)sr_Res(sres), /* addr kernel actually assigned */
arg2, /* length */
arg3, /* prot */
di_handle /* so the tool can refer to the read debuginfo later,
if it wants. */
);
}
/* Stay sane */
if (!sr_isError(sres) && (arg4 & VKI_MAP_FIXED))
vg_assert(sr_Res(sres) == arg1);
return sres;
}
/* ---------------------------------------------------------------------
PRE/POST wrappers for mips/Linux-specific syscalls
------------------------------------------------------------------ */
#define PRE(name) DEFN_PRE_TEMPLATE(mips_linux, name)
#define POST(name) DEFN_POST_TEMPLATE(mips_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 (mips_linux, sys_syscall);
DECL_TEMPLATE (mips_linux, sys_mmap);
DECL_TEMPLATE (mips_linux, sys_mmap2);
DECL_TEMPLATE (mips_linux, sys_stat64);
DECL_TEMPLATE (mips_linux, sys_lstat64);
DECL_TEMPLATE (mips_linux, sys_fadvise64);
DECL_TEMPLATE (mips_linux, sys_fstatat64);
DECL_TEMPLATE (mips_linux, sys_fstat64);
DECL_TEMPLATE (mips_linux, sys_sigreturn);
DECL_TEMPLATE (mips_linux, sys_rt_sigreturn);
DECL_TEMPLATE (mips_linux, sys_cacheflush);
DECL_TEMPLATE (mips_linux, sys_set_thread_area);
DECL_TEMPLATE (mips_linux, sys_pipe);
DECL_TEMPLATE (mips_linux, sys_prctl);
DECL_TEMPLATE (mips_linux, sys_ptrace);
PRE(sys_mmap2)
{
/* Exactly like sys_mmap() except the file offset is specified in 4096 byte
units rather than bytes, so that it can be used for files bigger than
2^32 bytes. */
SysRes r;
PRINT("sys_mmap2 ( %#lx, %lu, %lu, %lu, %lu, %lu )",
ARG1, ARG2, SARG3, SARG4, SARG5, SARG6);
PRE_REG_READ6(long, "mmap2", unsigned long, start, unsigned long, length,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, unsigned long, offset);
r = mips_PRE_sys_mmap(tid, ARG1, ARG2, ARG3, ARG4, ARG5,
4096 * (Off64T) ARG6);
SET_STATUS_from_SysRes(r);
}
PRE(sys_mmap)
{
SysRes r;
PRINT("sys_mmap ( %#lx, %lu, %ld, %ld, %ld, %lu )",
ARG1, ARG2, SARG3, SARG4, SARG5, ARG6);
PRE_REG_READ6(long, "mmap", unsigned long, start, vki_size_t, length,
int, prot, int, flags, int, fd, unsigned long, offset);
r = mips_PRE_sys_mmap(tid, ARG1, ARG2, ARG3, ARG4, ARG5, (Off64T) ARG6);
SET_STATUS_from_SysRes(r);
}
PRE(sys_ptrace)
{
PRINT("sys_ptrace ( %ld, %ld, %#lx, %#lx )", SARG1, SARG2, ARG3, ARG4);
PRE_REG_READ4(int, "ptrace",
long, request, long, pid, unsigned long, addr,
unsigned long, data);
switch (ARG1) {
case VKI_PTRACE_PEEKTEXT:
case VKI_PTRACE_PEEKDATA:
case VKI_PTRACE_PEEKUSR:
PRE_MEM_WRITE("ptrace(peek)", ARG4, sizeof(long));
break;
case VKI_PTRACE_GETEVENTMSG:
PRE_MEM_WRITE("ptrace(geteventmsg)", ARG4, sizeof(unsigned long));
break;
case VKI_PTRACE_GETSIGINFO:
PRE_MEM_WRITE("ptrace(getsiginfo)", ARG4, sizeof(vki_siginfo_t));
break;
case VKI_PTRACE_SETSIGINFO:
PRE_MEM_READ("ptrace(setsiginfo)", ARG4, sizeof(vki_siginfo_t));
break;
case VKI_PTRACE_GETREGSET:
ML_(linux_PRE_getregset)(tid, ARG3, ARG4);
break;
default:
break;
}
}
POST(sys_ptrace)
{
switch (ARG1) {
case VKI_PTRACE_TRACEME:
ML_(linux_POST_traceme)(tid);
break;
case VKI_PTRACE_PEEKTEXT:
case VKI_PTRACE_PEEKDATA:
case VKI_PTRACE_PEEKUSR:
POST_MEM_WRITE (ARG4, sizeof(long));
break;
case VKI_PTRACE_GETEVENTMSG:
POST_MEM_WRITE (ARG4, sizeof(unsigned long));
break;
case VKI_PTRACE_GETSIGINFO:
POST_MEM_WRITE (ARG4, sizeof(vki_siginfo_t));
break;
case VKI_PTRACE_GETREGSET:
ML_(linux_POST_getregset)(tid, ARG3, ARG4);
break;
default:
break;
}
}
// XXX: lstat64/fstat64/stat64 are generic, but not necessarily
// applicable to every architecture -- I think only to 32-bit archs.
// We're going to need something like linux/core_os32.h for such
// things, eventually, I think. --njn
PRE(sys_lstat64)
{
PRINT ("sys_lstat64 ( %#lx(%s), %#lx )", ARG1, (HChar *) ARG1, ARG2);
PRE_REG_READ2 (long, "lstat64", char *, file_name, struct stat64 *, buf);
PRE_MEM_RASCIIZ ("lstat64(file_name)", ARG1);
PRE_MEM_WRITE ("lstat64(buf)", ARG2, sizeof (struct vki_stat64));
}
POST(sys_lstat64)
{
vg_assert (SUCCESS);
if (RES == 0)
{
POST_MEM_WRITE (ARG2, sizeof (struct vki_stat64));
}
}
PRE(sys_stat64)
{
PRINT ("sys_stat64 ( %#lx(%s), %#lx )", ARG1, (HChar *) ARG1, ARG2);
PRE_REG_READ2 (long, "stat64", char *, file_name, struct stat64 *, buf);
PRE_MEM_RASCIIZ ("stat64(file_name)", ARG1);
PRE_MEM_WRITE ("stat64(buf)", ARG2, sizeof (struct vki_stat64));
}
POST(sys_stat64)
{
POST_MEM_WRITE (ARG2, sizeof (struct vki_stat64));
}
PRE(sys_fadvise64)
{
PRINT("sys_fadvise64 ( %ld, %llu, %llu, %ld )",
SARG1, MERGE64(ARG3,ARG4), MERGE64(ARG5, ARG6), SARG7);
if (VG_(tdict).track_pre_reg_read) {
PRRSN;
PRA1("fadvise64", int, fd);
PRA3("fadvise64", vki_u32, MERGE64_FIRST(offset));
PRA4("fadvise64", vki_u32, MERGE64_SECOND(offset));
PRA5("fadvise64", vki_u32, MERGE64_FIRST(len));
PRA6("fadvise64", vki_u32, MERGE64_SECOND(len));
PRA7("fadvise64", int, advice);
}
}
PRE(sys_fstatat64)
{
// ARG4 = int flags; Flags are or'ed together, therefore writing them
// as a hex constant is more meaningful.
PRINT("sys_fstatat64 ( %ld, %#lx(%s), %#lx, %#lx )",
SARG1, ARG2, (HChar*)ARG2, ARG3, ARG4);
PRE_REG_READ4(long, "fstatat64",
int, dfd, char *, file_name, struct stat64 *, buf, int, flags);
PRE_MEM_RASCIIZ ("fstatat64(file_name)", ARG2);
PRE_MEM_WRITE ("fstatat64(buf)", ARG3, sizeof (struct vki_stat64));
}
POST(sys_fstatat64)
{
POST_MEM_WRITE (ARG3, sizeof (struct vki_stat64));
}
PRE(sys_fstat64)
{
PRINT ("sys_fstat64 ( %lu, %#lx )", SARG1, ARG2);
PRE_REG_READ2 (long, "fstat64", unsigned long, fd, struct stat64 *, buf);
PRE_MEM_WRITE ("fstat64(buf)", ARG2, sizeof (struct vki_stat64));
}
POST(sys_fstat64)
{
POST_MEM_WRITE (ARG2, sizeof (struct vki_stat64));
}
PRE(sys_sigreturn)
{
PRINT ("sys_sigreturn ( )");
vg_assert (VG_ (is_valid_tid) (tid));
vg_assert (tid >= 1 && tid < VG_N_THREADS);
vg_assert (VG_ (is_running_thread) (tid));
VG_ (sigframe_destroy) (tid, False);
/* 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;
}
PRE(sys_rt_sigreturn)
{
PRINT ("rt_sigreturn ( )");
vg_assert (VG_ (is_valid_tid) (tid));
vg_assert (tid >= 1 && tid < VG_N_THREADS);
vg_assert (VG_ (is_running_thread) (tid));
/* 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;
}
PRE(sys_set_thread_area)
{
PRINT ("set_thread_area (%lx)", ARG1);
PRE_REG_READ1(long, "set_thread_area", unsigned long, addr);
SET_STATUS_from_SysRes( sys_set_tls( tid, ARG1 ) );
}
/* Very much MIPS specific */
PRE(sys_cacheflush)
{
PRINT ("cacheflush (%lx, %ld, %ld)", ARG1, SARG2, SARG3);
PRE_REG_READ3(long, "cacheflush", unsigned long, addr,
int, nbytes, int, cache);
VG_ (discard_translations) ((Addr)ARG1, (ULong) ARG2,
"PRE(sys_cacheflush)");
SET_STATUS_Success (0);
}
PRE(sys_pipe)
{
PRINT("sys_pipe ( %#lx )", ARG1);
PRE_REG_READ1(int, "pipe", int *, filedes);
PRE_MEM_WRITE( "pipe(filedes)", ARG1, 2*sizeof(int) );
}
POST(sys_pipe)
{
Int p0, p1;
vg_assert(SUCCESS);
p0 = RES;
p1 = sr_ResEx(status->sres);
if (!ML_(fd_allowed)(p0, "pipe", tid, True) ||
!ML_(fd_allowed)(p1, "pipe", tid, True)) {
VG_(close)(p0);
VG_(close)(p1);
SET_STATUS_Failure( VKI_EMFILE );
} else {
if (VG_(clo_track_fds)) {
ML_(record_fd_open_nameless)(tid, p0);
ML_(record_fd_open_nameless)(tid, p1);
}
}
}
PRE(sys_prctl)
{
switch (ARG1) {
case VKI_PR_SET_FP_MODE:
{
VexArchInfo vai;
VG_(machine_get_VexArchInfo)(NULL, &vai);
/* Reject unsupported modes */
if ((ARG2 & ~VKI_PR_FP_MODE_FR) ||
((ARG2 & VKI_PR_FP_MODE_FR) &&
!VEX_MIPS_HOST_FP_MODE(vai.hwcaps))) {
SET_STATUS_Failure(VKI_EOPNOTSUPP);
} else {
if (!(VG_(threads)[tid].arch.vex.guest_CP0_status &
MIPS_CP0_STATUS_FR) != !(ARG2 & VKI_PR_FP_MODE_FR)) {
ThreadId t;
for (t = 1; t < VG_N_THREADS; t++) {
if (VG_(threads)[t].status != VgTs_Empty) {
if (ARG2 & VKI_PR_FP_MODE_FR) {
VG_(threads)[t].arch.vex.guest_CP0_status |=
MIPS_CP0_STATUS_FR;
} else {
VG_(threads)[t].arch.vex.guest_CP0_status &=
~MIPS_CP0_STATUS_FR;
}
}
}
/* Discard all translations */
VG_(discard_translations)(0, 0xfffffffful, "prctl(PR_SET_FP_MODE)");
}
SET_STATUS_Success(0);
}
break;
}
case VKI_PR_GET_FP_MODE:
if (VG_(threads)[tid].arch.vex.guest_CP0_status & MIPS_CP0_STATUS_FR)
SET_STATUS_Success(VKI_PR_FP_MODE_FR);
else
SET_STATUS_Success(0);
break;
default:
WRAPPER_PRE_NAME(linux, sys_prctl)(tid, layout, arrghs, status, flags);
break;
}
}
POST(sys_prctl)
{
WRAPPER_POST_NAME(linux, sys_prctl)(tid, arrghs, status);
}
#undef PRE
#undef POST
/* ---------------------------------------------------------------------
The mips/Linux syscall table
------------------------------------------------------------------ */
#define PLAX_(sysno, name) WRAPPER_ENTRY_X_(mips_linux, sysno, name)
#define PLAXY(sysno, name) WRAPPER_ENTRY_XY(mips_linux, sysno, name)
// This table maps from __NR_xxx syscall numbers (from
// linux/include/asm-mips/unistd.h) to the appropriate PRE/POST sys_foo()
// wrappers on mips (as per sys_call_table in linux/arch/mips/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_main_table[] = {
//.. PLAXY (__NR_syscall, sys_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
//..
LINX_ (__NR_lseek, sys_lseek), // 19
GENX_ (__NR_getpid, sys_getpid), // 20
LINX_ (__NR_mount, sys_mount), // 21
LINX_ (__NR_umount, sys_oldumount), // 22
GENX_ (__NR_setuid, sys_setuid), // 23
GENX_ (__NR_getuid, sys_getuid), // 24
LINX_ (__NR_stime, sys_stime), // 25
PLAXY(__NR_ptrace, sys_ptrace), // 26
GENX_ (__NR_alarm, sys_alarm), // 27
//.. // (__NR_oldfstat, sys_fstat), // 28
GENX_ (__NR_pause, sys_pause), // 29
LINX_ (__NR_utime, sys_utime), // 30
//.. GENX_(__NR_stty, sys_ni_syscall), // 31
//.. GENX_(__NR_gtty, sys_ni_syscall), // 32
GENX_ (__NR_access, sys_access), // 33
//.. GENX_(__NR_nice, sys_nice), // 34
//.. GENX_(__NR_ftime, sys_ni_syscall), // 35
//.. GENX_(__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
PLAXY (__NR_pipe, sys_pipe), // 42
GENXY (__NR_times, sys_times), // 43
//.. GENX_(__NR_prof, sys_ni_syscall), // 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
//.. GENX_(__NR_acct, sys_acct), // 51
LINX_ (__NR_umount2, sys_umount), // 52
//.. GENX_(__NR_lock, sys_ni_syscall), // 53
LINXY (__NR_ioctl, sys_ioctl), // 54
LINXY (__NR_fcntl, sys_fcntl), // 55
//.. GENX_(__NR_mpx, sys_ni_syscall), // 56
GENX_ (__NR_setpgid, sys_setpgid), // 57
//.. GENX_(__NR_ulimit, sys_ni_syscall), // 58
//.. // (__NR_oldolduname, sys_olduname), // 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
LINXY (__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
// PLAX_(__NR_sigsuspend, sys_sigsuspend), // 72
LINXY (__NR_sigpending, sys_sigpending), // 73
//.. // (__NR_sethostname, sys_sethostname), // 74
GENX_ (__NR_setrlimit, sys_setrlimit), // 75
GENXY (__NR_getrlimit, sys_getrlimit), // 76
GENXY (__NR_getrusage, sys_getrusage), // 77
GENXY (__NR_gettimeofday, sys_gettimeofday), // 78
GENX_ (__NR_settimeofday, sys_settimeofday), // 79
GENXY (__NR_getgroups, sys_getgroups), // 80
GENX_ (__NR_setgroups, sys_setgroups), // 81
//.. PLAX_(__NR_select, old_select), // 82
GENX_ (__NR_symlink, sys_symlink), // 83
//.. // (__NR_oldlstat, sys_lstat), // 84
GENX_ (__NR_readlink, sys_readlink), // 85
//.. // (__NR_uselib, sys_uselib), // 86
//.. // (__NR_swapon, sys_swapon), // 87
//.. // (__NR_reboot, sys_reboot), // 88
//.. // (__NR_readdir, old_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
//.. GENX_(__NR_profil, sys_ni_syscall), // 98
GENXY (__NR_statfs, sys_statfs), // 99
GENXY (__NR_fstatfs, sys_fstatfs), // 100
//.. LINX_(__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_uname), // 109
//.. GENX_(__NR_iopl, sys_iopl), // 110
//.. LINX_(__NR_vhangup, sys_vhangup), // 111
//.. GENX_(__NR_idle, sys_ni_syscall), // 112
//.. // (__NR_vm86old, sys_vm86old), // 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
PLAX_ (__NR_sigreturn, sys_sigreturn), // 119
LINX_ (__NR_clone, sys_clone), // 120
//.. // (__NR_setdomainname, sys_setdomainname), // 121
GENXY (__NR_uname, sys_newuname), // 122
//.. PLAX_(__NR_modify_ldt, sys_modify_ldt), // 123
//.. LINXY(__NR_adjtimex, sys_adjtimex), // 124
GENXY (__NR_mprotect, sys_mprotect), // 125
LINXY (__NR_sigprocmask, sys_sigprocmask), // 126
//.. GENX_(__NR_create_module, sys_ni_syscall), // 127
//.. GENX_(__NR_init_module, sys_init_module), // 128
//.. // (__NR_delete_module, sys_delete_module), // 129
//.. GENX_(__NR_get_kernel_syms, sys_ni_syscall), // 130
//.. LINX_(__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
//.. GENX_(__NR_afs_syscall, sys_ni_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
PLAX_ (__NR_cacheflush, sys_cacheflush), // 147
GENX_ (__NR_getsid, sys_getsid), // 151
GENX_ (__NR_fdatasync, sys_fdatasync), // 152
LINXY (__NR__sysctl, sys_sysctl), // 153
GENX_ (__NR_mlock, sys_mlock), // 154
GENX_ (__NR_munlock, sys_munlock), // 155
GENX_ (__NR_mlockall, sys_mlockall), // 156
LINX_ (__NR_munlockall, sys_munlockall), // 157
//.. LINXY(__NR_sched_setparam, sys_sched_setparam), // 158
LINXY (__NR_sched_getparam, sys_sched_getparam), // 159
LINX_ (__NR_sched_setscheduler, sys_sched_setscheduler), // 160
LINX_ (__NR_sched_getscheduler, sys_sched_getscheduler), // 161
LINX_ (__NR_sched_yield, sys_sched_yield), // 162
LINX_ (__NR_sched_get_priority_max, sys_sched_get_priority_max), // 163
LINX_ (__NR_sched_get_priority_min, sys_sched_get_priority_min), // 164
//.. //LINX?(__NR_sched_rr_get_interval, sys_sched_rr_get_interval), // 165
GENXY (__NR_nanosleep, sys_nanosleep), // 166
GENX_ (__NR_mremap, sys_mremap), // 167
LINXY (__NR_accept, sys_accept), // 168
LINX_ (__NR_bind, sys_bind), // 169
LINX_ (__NR_connect, sys_connect), // 170
LINXY (__NR_getpeername, sys_getpeername), // 171
LINXY (__NR_getsockname, sys_getsockname), // 172
LINXY (__NR_getsockopt, sys_getsockopt), // 173
LINX_ (__NR_listen, sys_listen), // 174
LINXY (__NR_recv, sys_recv), // 175
LINXY (__NR_recvfrom, sys_recvfrom), // 176
LINXY (__NR_recvmsg, sys_recvmsg), // 177
LINX_ (__NR_send, sys_send), // 178
LINX_ (__NR_sendmsg, sys_sendmsg), // 179
LINX_ (__NR_sendto, sys_sendto), // 180
LINX_ (__NR_setsockopt, sys_setsockopt), // 181
LINX_ (__NR_shutdown, sys_shutdown), // 182
LINXY (__NR_socket, sys_socket), // 183
LINXY (__NR_socketpair, sys_socketpair), // 184
LINX_ (__NR_setresuid, sys_setresuid), // 185
LINXY (__NR_getresuid, sys_getresuid), // 186
//.. GENX_(__NR_query_module, sys_ni_syscall), // 187
GENXY (__NR_poll, sys_poll), // 188
//..
LINX_ (__NR_setresgid, sys_setresgid), // 190
LINXY (__NR_getresgid, sys_getresgid), // 191
PLAXY (__NR_prctl, sys_prctl), // 192
PLAX_ (__NR_rt_sigreturn, sys_rt_sigreturn), // 193
LINXY (__NR_rt_sigaction, sys_rt_sigaction), // 194
LINXY (__NR_rt_sigprocmask, sys_rt_sigprocmask), // 195
LINXY (__NR_rt_sigpending, sys_rt_sigpending), // 196
LINXY (__NR_rt_sigtimedwait, sys_rt_sigtimedwait), // 197
LINXY (__NR_rt_sigqueueinfo, sys_rt_sigqueueinfo), // 198
LINX_ (__NR_rt_sigsuspend, sys_rt_sigsuspend), // 199
GENXY (__NR_pread64, sys_pread64), // 200
GENX_ (__NR_pwrite64, sys_pwrite64), // 201
GENX_ (__NR_chown, sys_chown), // 202
GENXY (__NR_getcwd, sys_getcwd), // 203
LINXY (__NR_capget, sys_capget), // 204
//.. LINX_(__NR_capset, sys_capset), // 205
GENXY (__NR_sigaltstack, sys_sigaltstack), // 206
LINXY (__NR_sendfile, sys_sendfile), // 207
//.. GENXY(__NR_getpmsg, sys_getpmsg), // 208
//.. GENX_(__NR_putpmsg, sys_putpmsg), // 209
PLAX_ (__NR_mmap2, sys_mmap2), // 210
// GENX_(__NR_truncate64, sys_truncate64), // 211
GENX_ (__NR_ftruncate64, sys_ftruncate64), // 212
PLAXY (__NR_stat64, sys_stat64), // 213
PLAXY (__NR_lstat64, sys_lstat64), // 214
PLAXY (__NR_fstat64, sys_fstat64), // 215
//..
GENXY (__NR_mincore, sys_mincore), // 217
GENX_ (__NR_madvise, sys_madvise), // 218
GENXY (__NR_getdents64, sys_getdents64), // 219
LINXY (__NR_fcntl64, sys_fcntl64), // 220
//..
LINX_ (__NR_gettid, sys_gettid), // 222
//..
LINXY (__NR_getxattr, sys_getxattr), // 227
LINXY (__NR_lgetxattr, sys_lgetxattr), // 228
LINXY (__NR_fgetxattr, sys_fgetxattr), // 229
LINXY (__NR_listxattr, sys_listxattr), // 230
LINXY (__NR_llistxattr, sys_llistxattr), // 231
LINXY (__NR_flistxattr, sys_flistxattr), // 232
LINX_ (__NR_removexattr, sys_removexattr), // 233
LINX_ (__NR_lremovexattr, sys_lremovexattr), // 234
LINX_ (__NR_fremovexattr, sys_fremovexattr), // 235
//..
LINXY (__NR_sendfile64, sys_sendfile64), // 237
LINXY (__NR_futex, sys_futex), // 238
LINX_ (__NR_sched_setaffinity, sys_sched_setaffinity), // 239
LINXY (__NR_sched_getaffinity, sys_sched_getaffinity), // 240
LINX_ (__NR_io_setup, sys_io_setup), // 241
LINX_ (__NR_io_destroy, sys_io_destroy), // 242
LINXY (__NR_io_getevents, sys_io_getevents), // 243
LINX_ (__NR_io_submit, sys_io_submit), // 244
LINXY (__NR_io_cancel, sys_io_cancel), // 245
LINX_ (__NR_exit_group, sys_exit_group), // 246
//..
LINXY (__NR_epoll_create, sys_epoll_create), // 248
LINX_ (__NR_epoll_ctl, sys_epoll_ctl), // 249
LINXY (__NR_epoll_wait, sys_epoll_wait), // 250
//..
LINX_ (__NR_set_tid_address, sys_set_tid_address), // 252
PLAX_ (__NR_fadvise64, sys_fadvise64), // 254
GENXY (__NR_statfs64, sys_statfs64), // 255
GENXY (__NR_fstatfs64, sys_fstatfs64), // 256
//..
LINXY (__NR_timer_create, sys_timer_create), // 257
LINXY (__NR_timer_settime, sys_timer_settime), // 258
LINXY (__NR_timer_gettime, sys_timer_gettime), // 259
LINX_ (__NR_timer_getoverrun, sys_timer_getoverrun), // 260
LINX_ (__NR_timer_delete, sys_timer_delete), // 261
LINX_ (__NR_clock_settime, sys_clock_settime), // 262
LINXY (__NR_clock_gettime, sys_clock_gettime), // 263
LINXY (__NR_clock_getres, sys_clock_getres), // 264
LINXY (__NR_clock_nanosleep, sys_clock_nanosleep), // 265
LINXY (__NR_tgkill, sys_tgkill), // 266
//.. GENX_(__NR_utimes, sys_utimes), // 267
LINXY (__NR_get_mempolicy, sys_get_mempolicy), // 269
LINX_ (__NR_set_mempolicy, sys_set_mempolicy), // 270
LINXY (__NR_mq_open, sys_mq_open), // 271
LINX_ (__NR_mq_unlink, sys_mq_unlink), // 272
LINX_ (__NR_mq_timedsend, sys_mq_timedsend), // 273
LINXY (__NR_mq_timedreceive, sys_mq_timedreceive), // 274
LINX_ (__NR_mq_notify, sys_mq_notify), // 275
LINXY (__NR_mq_getsetattr, sys_mq_getsetattr), // 276
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
//..
PLAX_ (__NR_set_thread_area, sys_set_thread_area), // 283
//..
LINXY (__NR_openat, sys_openat), // 288
LINX_ (__NR_mkdirat, sys_mkdirat), // 289
LINX_ (__NR_mknodat, sys_mknodat), // 290
LINX_ (__NR_fchownat, sys_fchownat), // 291
LINX_ (__NR_futimesat, sys_futimesat), // 292
PLAXY (__NR_fstatat64, sys_fstatat64), // 293
LINX_ (__NR_unlinkat, sys_unlinkat), // 294
LINX_ (__NR_renameat, sys_renameat), // 295
LINX_ (__NR_linkat, sys_linkat), // 296
LINX_ (__NR_symlinkat, sys_symlinkat), // 297
LINX_ (__NR_readlinkat, sys_readlinkat), // 298
LINX_ (__NR_fchmodat, sys_fchmodat), // 299
LINX_ (__NR_faccessat, sys_faccessat), // 300
LINXY (__NR_pselect6, sys_pselect6), // 301
LINXY (__NR_ppoll, sys_ppoll), // 302
//..
LINX_ (__NR_set_robust_list, sys_set_robust_list), // 309
LINXY (__NR_get_robust_list, sys_get_robust_list), // 310
//..
LINXY (__NR_epoll_pwait, sys_epoll_pwait), // 313
//..
LINX_ (__NR_utimensat, sys_utimensat), // 316
//..
LINX_ (__NR_fallocate, sys_fallocate), // 320
LINXY (__NR_timerfd_create, sys_timerfd_create), // 321
LINXY (__NR_timerfd_gettime, sys_timerfd_gettime), // 322
LINXY (__NR_timerfd_settime, sys_timerfd_settime), // 323
LINXY (__NR_signalfd4, sys_signalfd4), // 324
LINXY (__NR_eventfd2, sys_eventfd2), // 325
//..
LINXY (__NR_pipe2, sys_pipe2), // 328
LINXY (__NR_inotify_init1, sys_inotify_init1), // 329
//..
LINXY (__NR_prlimit64, sys_prlimit64), // 338
//..
LINXY (__NR_clock_adjtime, sys_clock_adjtime), // 341
LINX_ (__NR_syncfs, sys_syncfs), // 342
//..
LINXY (__NR_process_vm_readv, sys_process_vm_readv), // 345
LINX_ (__NR_process_vm_writev, sys_process_vm_writev), // 346
//..
LINXY(__NR_getrandom, sys_getrandom), // 353
LINXY(__NR_memfd_create, sys_memfd_create) // 354
};
SyscallTableEntry* ML_(get_linux_syscall_entry) (UInt sysno)
{
const UInt syscall_main_table_size
= sizeof (syscall_main_table) / sizeof (syscall_main_table[0]);
/* Is it in the contiguous initial section of the table? */
if (sysno < syscall_main_table_size) {
SyscallTableEntry * sys = &syscall_main_table[sysno];
if (sys->before == NULL)
return NULL; /* No entry. */
else
return sys;
}
/* Can't find a wrapper. */
return NULL;
}
#endif // defined(VGP_mips32_linux)
/*--------------------------------------------------------------------*/
/*--- end syswrap-mips-linux.c ---*/
/*--------------------------------------------------------------------*/