+2000-07-05 Greg McGary <greg@mcgary.org>
+
+ * sysdeps/generic/bp-checks.h: New file.
+ * sysdeps/generic/bp-thunks.h: Replace generic thunk definitions
+ with list of #include files.
+ * sysdeps/unix/make-syscalls.sh: Handle new arg signature
+ keyletters a, b, B, f, n, N, P, v, V. Fixup some indentation.
+ Don't generate BP thunk if `V' appears in signature.
+ Generate thunks with complete bounds checks.
+ * sysdeps/unix/syscalls.list: Refine signatures using new keyletters.
+ * sysdeps/unix/inet/syscalls.list: Likewise.
+ * sysdeps/unix/mman/syscalls.list: Likewise.
+ * sysdeps/unix/sysv/linux/syscalls.list: Likewise.
+ * sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
+ * sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
+ * sysdeps/unix/sysv/linux/powerpc/syscalls.list: Likewise.
+
2000-07-05 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/getsysstats.c (get_proc_path): Cache
--- /dev/null
+/* Bounded-pointer checking macros for C.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ Contributed by Greg McGary <greg@mcgary.org>
+
+ This file is part of the GNU C Library. Its master source is NOT part of
+ the C library, however. The master source lives in the GNU MP Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _bp_checks_h_
+# define _bp_checks_h_ 1
+
+# if !__ASSEMBLER__
+
+# if __BOUNDED_POINTERS__
+
+/* GKM FIXME: when gcc is ready, add real bounds checks */
+# define BOUNDS_VIOLATED (__builtin_trap (), 0)
+extern int __ubp_memchr (const char *__unbounded, int, unsigned);
+
+/* Verify that pointer's value >= low. Return pointer value. */
+# define CHECK_BOUNDS_LOW(ARG) \
+ (((__ptrvalue (ARG) < __ptrlow (ARG)) && BOUNDS_VIOLATED), \
+ __ptrvalue (ARG))
+
+/* Verify that pointer's value < high. Return pointer value. */
+# define CHECK_BOUNDS_HIGH(ARG) \
+ (((__ptrvalue (ARG) > __ptrhigh (ARG)) && BOUNDS_VIOLATED), \
+ __ptrvalue (ARG))
+
+/* Check bounds of a pointer seated to a single object. */
+# define CHECK_1(ARG) CHECK_N ((ARG), 1)
+
+/* Same as CHECK_1, but tolerate ARG == NULL. */
+# define CHECK_1opt(ARG) CHECK_Nopt ((ARG), 1)
+
+/* Check bounds of a pointer seated to an array of N objects. */
+# define CHECK_N(ARG, N) \
+ (((__ptrvalue (ARG) < __ptrlow (ARG) \
+ || __ptrvalue (ARG) + (N) > __ptrhigh (ARG)) \
+ && BOUNDS_VIOLATED), __ptrvalue (ARG))
+
+/* Same as CHECK_N, but tolerate ARG == NULL. */
+# define CHECK_Nopt(ARG, N) \
+ (((__ptrvalue (ARG) \
+ && (__ptrvalue (ARG) < __ptrlow (ARG) \
+ || __ptrvalue (ARG) + (N) > __ptrhigh (ARG))) \
+ && BOUNDS_VIOLATED), __ptrvalue (ARG))
+
+/* Check for NUL-terminator within string's bounds. */
+# define CHECK_STRING(ARG) \
+ (((__ptrvalue (ARG) < __ptrlow (ARG) \
+ || !__ubp_memchr (__ptrvalue (ARG), '\0', \
+ (__ptrhigh (ARG) - __ptrvalue (ARG)))) \
+ && BOUNDS_VIOLATED), \
+ __ptrvalue (ARG))
+
+# else /* !__BOUNDED_POINTERS__ */
+
+/* Do nothing if not compiling with -fbounded-pointers. */
+
+# define BOUNDS_VIOLATED
+# define CHECK_BOUNDS_LOW(ARG) (ARG)
+# define CHECK_BOUNDS_HIGH(ARG) (ARG)
+# define CHECK_1(ARG) (ARG)
+# define CHECK_1opt(ARG) (ARG)
+# define CHECK_N(ARG, N) (ARG)
+# define CHECK_Nopt(ARG, N) (ARG)
+# define CHECK_STRING(ARG) (ARG)
+
+# endif /* !__BOUNDED_POINTERS__ */
+
+# if defined (_IOC_SIZESHIFT) && defined (_IOC_SIZEBITS)
+
+/* Extract the size of the ioctl parameter argument and check its bounds. */
+# define CHECK_IOCTL(ARG, CMD) \
+ CHECK_N ((ARG), (((CMD) >> _IOC_SIZESHIFT) & ((1 << _IOC_SIZEBITS) - 1)))
+
+# else
+# define CHECK_IOCTL(ARG, CMD) __ptrvalue (ARG)
+# endif
+
+# endif /* !__ASSEMBLER__ */
+
+#endif /* _bp_checks_h_ */
-/* Bounded-pointer thunk definitions.
+/* Bounded-pointer syscall thunk support.
Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by Greg McGary <greg@mcgary.org>
#ifndef _bpthunks_h_
#define _bpthunks_h_
-#include <libc-symbols.h>
-
-#define BP_ALIAS(STRONG, ALIAS) weak_alias (__BP_##STRONG, __BP_##ALIAS)
-
-#define PV(P) __ptrvalue (P)
-#define SV(S) __ptrvalue (S)
-#define PB(P) __ptrlow (P)
-#define PE(P) __ptrhigh (P)
-#define voidp void *__bounded
-#define charp char *__bounded
-
-/* GKM FIXME: Add code to check bounds. Right now, they only strip bounds, */
-
-#define BP_THUNK_i_iiip(NAME) __unbounded { \
- extern int NAME (int, int, int, void *); \
- int __BP_##NAME (int i0, int i1, int i2, voidp p3) \
- { return NAME (i0, i1, i2, PV (p3)); } }
-
-#define BP_THUNK_i_iiipi(NAME) __unbounded { \
- extern int NAME (int, int, int, void *, int); \
- int __BP_##NAME (int i0, int i1, int i2, voidp p3, int i4) \
- { return NAME (i0, i1, i2, PV (p3), i4); } }
-
-#define BP_THUNK_i_iiipp(NAME) __unbounded { \
- extern int NAME (int, int, int, void *, void *); \
- int __BP_##NAME (int i0, int i1, int i2, voidp p3, voidp p4) \
- { return NAME (i0, i1, i2, PV (p3), PV (p4)); } }
-
-#define BP_THUNK_i_iip(NAME) __unbounded { \
- extern int NAME (int, int, void *); \
- int __BP_##NAME (int i0, int i1, voidp p2) \
- { return NAME (i0, i1, PV (p2)); } }
-
-#define BP_THUNK_i_iipi(NAME) __unbounded { \
- extern int NAME (int, int, void *, int); \
- int __BP_##NAME (int i0, int i1, voidp p2, int i3) \
- { return NAME (i0, i1, PV (p2), i3); } }
-
-#define BP_THUNK_i_iipp(NAME) __unbounded { \
- extern int NAME (int, int, void *, void *); \
- int __BP_##NAME (int i0, int i1, voidp p2, voidp p3) \
- { return NAME (i0, i1, PV (p2), PV (p3)); } }
-
-#define BP_THUNK_i_ip(NAME) __unbounded { \
- extern int NAME (int, void *); \
- int __BP_##NAME (int i0, voidp p1) \
- { return NAME (i0, PV (p1)); } }
-
-#define BP_THUNK_i_ipi(NAME) __unbounded { \
- extern int NAME (int, void *, int); \
- int __BP_##NAME (int i0, voidp p1, int i2) \
- { return NAME (i0, PV (p1), i2); } }
-
-#define BP_THUNK_i_ipii(NAME) __unbounded { \
- extern int NAME (int, void *, int, int); \
- int __BP_##NAME (int i0, voidp p1, int i2, int i3) \
- { return NAME (i0, PV (p1), i2, i3); } }
-
-#define BP_THUNK_i_ipiii(NAME) __unbounded { \
- extern int NAME (int, void *, int, int, int); \
- int __BP_##NAME (int i0, voidp p1, int i2, int i3, int i4) \
- { return NAME (i0, PV (p1), i2, i3, i4); } }
-
-#define BP_THUNK_i_ipiipi(NAME) __unbounded { \
- extern int NAME (int, void *, int, int, void *, int); \
- int __BP_##NAME (int i0, voidp p1, int i2, int i3, voidp p4, int i5) \
- { return NAME (i0, PV (p1), i2, i3, PV (p4), i5); } }
-
-#define BP_THUNK_i_ipiipp(NAME) __unbounded { \
- extern int NAME (int, void *, int, int, void *, void *); \
- int __BP_##NAME (int i0, voidp p1, int i2, int i3, voidp p4, voidp p5) \
- { return NAME (i0, PV (p1), i2, i3, PV (p4), PV (p5)); } }
-
-#define BP_THUNK_i_ipip(NAME) __unbounded { \
- extern int NAME (int, void *, int, void *); \
- int __BP_##NAME (int i0, voidp p1, int i2, voidp p3) \
- { return NAME (i0, PV (p1), i2, PV (p3)); } }
-
-#define BP_THUNK_i_ipp(NAME) __unbounded { \
- extern int NAME (int, void *, void *); \
- int __BP_##NAME (int i0, voidp p1, voidp p2) \
- { return NAME (i0, PV (p1), PV (p2)); } }
-
-#define BP_THUNK_i_ippi(NAME) __unbounded { \
- extern int NAME (int, void *, void *, int); \
- int __BP_##NAME (int i0, voidp p1, voidp p2, int i3) \
- { return NAME (i0, PV (p1), PV (p2), i3); } }
-
-#define BP_THUNK_i_ipppp(NAME) __unbounded { \
- extern int NAME (int, void *, void *, void *, void *); \
- int __BP_##NAME (int i0, voidp p1, voidp p2, voidp p3, voidp p4) \
- { return NAME (i0, PV (p1), PV (p2), PV (p3), PV (p4)); } }
+/* This header is included by the syscall BP thunks defined in
+ sysd-syscalls, as created by sysdeps/unix/make-syscalls.sh. It
+ includes all headers that contain prototype declarations for system
+ call functions. */
-#define BP_THUNK_i_isi(NAME) __unbounded { \
- extern int NAME (int, char *, int); \
- int __BP_##NAME (int i0, charp s1, int i2) \
- { return NAME (i0, SV (s1), i2); } }
-
-#define BP_THUNK_i_isip(NAME) __unbounded { \
- extern int NAME (int, char *, int, void *); \
- int __BP_##NAME (int i0, charp s1, int i2, voidp p3) \
- { return NAME (i0, SV (s1), i2, PV (p3)); } }
-
-#define BP_THUNK_i_p(NAME) __unbounded { \
- extern int NAME (void *); \
- int __BP_##NAME (voidp p0) \
- { return NAME (PV (p0)); } }
-
-#define BP_THUNK_i_pi(NAME) __unbounded { \
- extern int NAME (void *, int); \
- int __BP_##NAME (voidp p0, int i1) \
- { return NAME (PV (p0), i1); } }
-
-#define BP_THUNK_i_pii(NAME) __unbounded { \
- extern int NAME (void *, int, int); \
- int __BP_##NAME (voidp p0, int i1, int i2) \
- { return NAME (PV (p0), i1, i2); } }
-
-#define BP_THUNK_i_piii(NAME) __unbounded { \
- extern int NAME (void *, int, int, int); \
- int __BP_##NAME (voidp p0, int i1, int i2, int i3) \
- { return NAME (PV (p0), i1, i2, i3); } }
-
-#define BP_THUNK_i_pp(NAME) __unbounded { \
- extern int NAME (void *, void *); \
- int __BP_##NAME (voidp p0, voidp p1) \
- { return NAME (PV (p0), PV (p1)); } }
-
-#define BP_THUNK_i_pppi(NAME) __unbounded { \
- extern int NAME (void *, void *, void *, int); \
- int __BP_##NAME (voidp p0, voidp p1, voidp p2, int i3) \
- { return NAME (PV (p0), PV (p1), PV (p2), i3); } }
-
-#define BP_THUNK_i_s(NAME) __unbounded { \
- extern int NAME (char *); \
- int __BP_##NAME (charp s0) \
- { return NAME (SV (s0)); } }
-
-#define BP_THUNK_i_si(NAME) __unbounded { \
- extern int NAME (char *, int); \
- int __BP_##NAME (charp s0, int i1) \
- { return NAME (SV (s0), i1); } }
-
-#define BP_THUNK_i_sii(NAME) __unbounded { \
- extern int NAME (char *, int, int); \
- int __BP_##NAME (charp s0, int i1, int i2) \
- { return NAME (SV (s0), i1, i2); } }
-
-#define BP_THUNK_i_sipip(NAME) __unbounded { \
- extern int NAME (char *, int, void *, int, void *); \
- int __BP_##NAME (charp s0, int i1, voidp p2, int i3, voidp p4) \
- { return NAME (SV (s0), i1, PV (p2), i3, PV (p4)); } }
-
-#define BP_THUNK_i_sp(NAME) __unbounded { \
- extern int NAME (char *, void *); \
- int __BP_##NAME (charp s0, voidp p1) \
- { return NAME (SV (s0), PV (p1)); } }
-
-#define BP_THUNK_i_spi(NAME) __unbounded { \
- extern int NAME (char *, void *, int); \
- int __BP_##NAME (charp s0, voidp p1, int i2) \
- { return NAME (SV (s0), PV (p1), i2); } }
-
-#define BP_THUNK_i_spp(NAME) __unbounded { \
- extern int NAME (char *, void *, void *); \
- int __BP_##NAME (charp s0, voidp p1, voidp p2) \
- { return NAME (SV (s0), PV (p1), PV (p2)); } }
-
-#define BP_THUNK_i_ss(NAME) __unbounded { \
- extern int NAME (char *, char *); \
- int __BP_##NAME (charp s0, charp s1) \
- { return NAME (SV (s0), s1); } }
-
-#define BP_THUNK_i_sssip(NAME) __unbounded { \
- extern int NAME (char *, char *, char *, int, void *); \
- int __BP_##NAME (charp s0, charp s1, charp s2, int i3, voidp p4) \
- { return NAME (SV (s0), SV (s1), SV (s2), i3, PV (p4)); } }
-
-/* sstk */
-#define BP_THUNK_p_i(NAME) __unbounded { \
- extern void *NAME (int); \
- voidp __BP_##NAME (int i0) \
- { charp m; PV (m) = PB (m) = NAME (i0); \
- PE (m) = PV (m) + i0; return m; } }
-
-/* mremap */
-#define BP_THUNK_p_piii(NAME) __unbounded { \
- extern void *NAME (void *, int, int, int); \
- voidp __BP_##NAME (voidp p0, int i1, int i2, int i3) \
- { charp m; PV (m) = PB (m) = NAME (PV (p0), i1, i2, i3); \
- PE (m) = PV (m) + i2; return m; } }
-
-/* mmap */
-#define BP_THUNK_p_piiiii(NAME) __unbounded { \
- extern void *NAME (void *, int, int, int, int, int); \
- voidp __BP_##NAME (voidp p0, int i1, int i2, int i3, int i4, int i5) \
- { charp m; PV (m) = PB (m) = NAME (PV (p0), i1, i2, i3, i4, i5); \
- PE (m) = PV (m) + i1; return m; } }
+#include <libc-symbols.h>
+#include <bp-sym.h>
+#include <bp-checks.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sched.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <utime.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/klog.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/quota.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/swap.h>
+#include <sys/sysinfo.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <sys/timex.h>
+#include <sys/utsname.h>
+#include <sys/vm86.h>
+#include <sys/wait.h>
#endif /* _bpthunks_h_ */
# File name Caller Syscall name # args Strong name Weak names
-accept - accept i:ipp __libc_accept accept
+accept - accept i:ibN __libc_accept accept
bind - bind i:ipi bind
connect - connect i:ipi __libc_connect __connect connect
gethostid - gethostid i: gethostid
-gethostname - gethostname i:si __gethostname gethostname
-getpeername - getpeername i:ipp getpeername
-getsockname - getsockname i:ipp getsockname
-getsockopt - getsockopt i:iiipp getsockopt
+gethostname - gethostname i:bn __gethostname gethostname
+getpeername - getpeername i:ibN getpeername
+getsockname - getsockname i:ibN getsockname
+getsockopt - getsockopt i:iiiBN getsockopt
listen - listen i:ii listen
-recv - recv i:ipii __libc_recv recv
-recvfrom - recvfrom i:ipiipp __libc_recvfrom recvfrom
+recv - recv i:ibni __libc_recv recv
+recvfrom - recvfrom i:ibnibN __libc_recvfrom recvfrom
recvmsg - recvmsg i:ipi __libc_recvmsg recvmsg
-send - send i:ipii __libc_send __send send
+send - send i:ibni __libc_send __send send
sendmsg - sendmsg i:ipi __libc_sendmsg sendmsg
-sendto - sendto i:ipiipi __libc_sendto sendto
+sendto - sendto i:ibnibn __libc_sendto sendto
sethostid - sethostid i:i sethostid
sethostname - sethostname i:pi sethostname
-setsockopt - setsockopt i:iiipi setsockopt
+setsockopt - setsockopt i:iiibn setsockopt
shutdown - shutdown i:ii shutdown
socket - socket i:iii socket
-socketpair - socketpair i:iiip socketpair
+socketpair - socketpair i:iiif socketpair
# Usage: make-syscalls.sh ../sysdeps/unix/common
# Expects $sysdirs in environment.
+##############################################################################
+
+# Syscall Signature Key Letters for BP Thunks:
+#
+# a: unchecked address (e.g., 1st arg to mmap)
+# b: non-NULL buffer (e.g., 2nd arg to read)
+# B: optionally-NULL buffer (e.g., 4th arg to getsockopt)
+# f: buffer of 2 ints (e.g., 4th arg to socketpair)
+# i: scalar (any signedness & size: int, long, long long, enum, whatever)
+# n: scalar buffer length (e.g., 3rd arg to read)
+# N: pointer to value/return scalar buffer length (e.g., 6th arg to recvfrom)
+# p: pointer to typed object (e.g., any non-void* arg)
+# P: pointer return value (e.g., return value from mmap)
+# s: string (e.g., 1st arg to open)
+# v: vararg scalar (e.g., optional 3rd arg to open)
+# V: vararg pointer (e.g., 3rd arg to fcntl & ioctl)
+
+ptrlet='[abBfNpPs]'
+argdig='[1-9]'
+fixarg='[^vV]'$argdig # fixed args (declare extern)
+strarg=s$argdig # string arg (check with CHECK_STRING)
+twoarg=f$argdig # fd pair arg (check with CHECK_N (..., 2)
+objarg=p$argdig # object arg (check with CHECK_1)
+ptrarg=$ptrlet$argdig # pointer arg (toss bounds)
+rtnarg='P'$argdig # pointer return value (add bounds)
+bufarg='[bB]'$argdig # buffer arg (check with CHECK_N)
+intarg='[inv]'$argdig # scalar arg
+borarg='[iv]'$argdig # boring arg (just pass it through)
+
+##############################################################################
+
thisdir=$1; shift
echo ''
test -n "$calls" || exit 0
# Emit rules to compile the syscalls remaining in $calls.
-echo "$calls" | while read file srcfile caller syscall args strong weak; do
+echo "$calls" |
+while read file srcfile caller syscall args strong weak; do
-# Figure out if $syscall is defined with a number in syscall.h.
-callnum=-
-eval `{ echo "#include <sysdep.h>";
+ # Figure out if $syscall is defined with a number in syscall.h.
+ callnum=-
+ eval `{ echo "#include <sysdep.h>";
echo "callnum=SYS_ify ($syscall)"; } |
$asm_CPP - |sed -n -e "/^callnum=.*$syscall/d" \
-e "/^\(callnum=\)[ ]*\(.*\)/s//\1'\2'/p"`
# Make sure only the first syscall rule is used, if multiple dirs
# define the same syscall.
- echo "#### CALL=$file NUMBER=$callnum ARGS=$args SOURCE=$srcfile"
+ echo ''
+ echo "#### CALL=$file NUMBER=$callnum ARGS=$args SOURCE=$srcfile"
+
case x$srcfile"$callnum" in
x*-) ;; ### Do nothing for undefined callnum
x-*)
esac
case x"$callnum",$srcfile,$args in
- x-,-,*) ;;
- x*,-,*[sp]* | x*,*.[sS],*[sp]*)
+ x-,-,* | x*,*.[sS],*V*) ;;
+ x*,-,*$ptrlet* | x*,*.[sS],*$ptrlet*)
+
+ # find the name without leading underscores
+ set `echo $strong $weak |tr -s ' \t' '\12' |sed '/^_/d'`
+ callname=$1
+
+ # convert signature string to individual numbered arg names
+ # e.g., i:ipbN -> i0 i1 p2 b3 N4
+ set `echo $args |
+ sed -e 's/^\(.\):\(.*\)/\2 \10/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \11/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \12/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \13/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \14/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \15/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \16/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \17/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \18/' \
+ -e 's/^\([^ ]\)\(.*\)/\2 \19/'`
+ rtn=$1; shift
+ args=$*
+ arglist=`echo $* |sed 's/ /, /g'`
+
+ # The best way to understand what's going on here is to examine
+ # the output in BUILDDIR/sysd-syscalls.
+
+ # generate makefile envelope & rule head
echo "ifeq (,\$(filter $file,\$(bp-thunks)))"
- echo "bp-thunks += $file";
+ echo "bp-thunks += $file"
+ echo "\$(objpfx)\$(bppfx)$file.ob: \$(common-objpfx)s-proto.d"
+
+ # generate macro head & thunk prologue
echo "\
-\$(objpfx)\$(bppfx)$file.ob: \$(common-objpfx)s-proto.d
- (echo '#include <bp-thunks.h>'; \\
- echo 'BP_THUNK_`echo $args |tr : _` ($strong)'; \\"
+ (echo '#define $callname($arglist) r0, $rtn; \\'; \\
+ echo '`echo $args | \
+ sed -e 's/\('$fixarg'\)/extern \1, \1v;/g' \
+ -e 's/\(v'$argdig'\)/extern int \1v;/g'` \\'; \\
+ echo '__typeof (r0) BP_SYM ($strong) (`echo $args | \
+ sed -e 's/ /, /g' \
+ -e 's/\('$ptrarg'\)/__typeof (\1v) *__bounded \1a/g' \
+ -e 's/\('$intarg'\)/__typeof (\1v) \1a/g'`) { \\'; \\
+ echo ' extern __typeof (r0) ($callname) (`echo $args | \
+ sed -e 's/ /, /g' \
+ -e 's/\('$ptrarg'\)/__typeof (\1v) *__unbounded/g' \
+ -e 's/\('$intarg'\)/__typeof (\1v)/g'`); \\'; \\"
+
+ # generate thunk bounds checks
+ for arg; do
+ next=$2; shift
+ case $arg in
+ B$argdig) echo " echo ' __ptrvalue (${arg}a) && \\'; \\" ;;
+ esac
+ case $arg in
+ n$argdig) len=$arg ;; ### save for possible use with return value.
+ $strarg) echo " echo ' CHECK_STRING (${arg}a); \\'; \\" ;;
+ $objarg) echo " echo ' CHECK_1 (${arg}a); \\'; \\" ;;
+ $twoarg) echo " echo ' CHECK_N (${arg}a, 2); \\'; \\" ;;
+ $bufarg)
+ case $next in
+ n$argdig) echo " echo ' CHECK_N (${arg}a, ${next}a); \\'; \\" ;;
+ N$argdig) echo " echo ' CHECK_N (${arg}a, *CHECK_1 (${next}a)); \\'; \\" ;;
+ *) echo "### BP Thunk Error: Expected length after buffer ###" ;;
+ esac ;;
+ esac
+ done
+ # generate thunk epilogue
+ funcall="($callname) (`echo $args | \
+ sed -e 's/ /, /g' \
+ -e 's/\('$ptrarg'\)/__ptrvalue (\1a)/g' \
+ -e 's/\('$intarg'\)/\1a/g'`)"
+ case $rtn in
+ P*) echo " echo '{ __typeof ($rtn) *__bounded rtn; \\'; \\
+ echo ' __ptrlow (rtn) = __ptrvalue (rtn) = $funcall; \\'; \\
+ echo ' __ptrhigh (rtn) = __ptrlow (rtn) + ${len}a; return rtn; } \\'; \\" ;;
+ *) echo " echo ' return $funcall; \\'; \\" ;;
+ esac
+ echo " echo '} \\'; \\"
+
+ # generate thunk aliases
for name in $weak; do
case $name in
*@*) ;;
- *) echo " echo 'BP_ALIAS ($strong, $name)'; \\" ;;
+ *) echo " echo 'weak_alias (BP_SYM ($strong), BP_SYM ($name)) \\'; \\" ;;
esac
done
-
- echo ' ) | $(COMPILE.c) -x c -o $@ -'
+ # wrap up
+ echo "\
+ echo ''; \\
+ echo '#include <bp-thunks.h>'; \\
+ ) | \$(COMPILE.c) -x c -o \$@ -"
+### Use this for debugging intermediate output:
+### echo ' ) >$(@:.ob=.c)
+### $(subst -c,-E,$(COMPILE.c)) -o $(@:.ob=.ib) $(@:.ob=.c)
+### $(COMPILE.c) -x cpp-output -o $@ $(@:.ob=.ib)'
echo endif
;;
esac
# File name Caller Syscall name # args Strong name Weak names
madvise - madvise i:pii madvise
-mmap - mmap p:piiiii __mmap mmap
-mprotect - mprotect i:pii __mprotect mprotect
-msync - msync i:pii __libc_msync msync
-munmap - munmap i:pi __munmap munmap
+mmap - mmap P:aniiii __mmap mmap
+mprotect - mprotect i:aii __mprotect mprotect
+msync - msync i:aii __libc_msync msync
+munmap - munmap i:ai __munmap munmap
dup - dup i:i __dup dup
dup2 - dup2 i:ii __dup2 dup2
fchdir - fchdir i:i __fchdir fchdir
-fcntl - fcntl i:iip __libc_fcntl __fcntl fcntl
+fcntl - fcntl i:iiV __libc_fcntl __fcntl fcntl
fstatfs - fstatfs i:ip __fstatfs fstatfs
fsync - fsync i:i __libc_fsync fsync
getdomain - getdomainname i:si getdomainname
getpriority - getpriority i:ii getpriority
getrlimit - getrlimit i:ip __getrlimit getrlimit
getuid - getuid i: __getuid getuid
-ioctl - ioctl i:iip __ioctl ioctl
+ioctl - ioctl i:iiV __ioctl ioctl
kill - kill i:ii __kill kill
link - link i:ss __link link
lseek - lseek i:iii __libc_lseek __lseek lseek
mkdir - mkdir i:si __mkdir mkdir
-open - open i:sii __libc_open __open open
+open - open i:siv __libc_open __open open
profil - profil i:piii profil
ptrace - ptrace i:iiii ptrace
-read - read i:ipi __libc_read __read read
+read - read i:ibn __libc_read __read read
readlink - readlink i:spi __readlink readlink
readv - readv i:ipi __readv readv
reboot - reboot i:i reboot
uname - uname i:p uname
unlink - unlink i:s __unlink unlink
utimes - utimes i:sp __utimes utimes
-write - write i:ipi __libc_write __write write
+write - write i:ibn __libc_write __write write
writev - writev i:ipi __writev writev
pwrite - pwrite 4 __syscall_pwrite __syscall_pwrite64 __pwrite pwrite __pwrite64 pwrite64
fstatfs - fstatfs i:ip __fstatfs fstatfs fstatfs64 __fstatfs64
statfs - statfs i:sp __statfs statfs statfs64
-mmap - mmap 6 __mmap mmap __mmap64 mmap64
+mmap - mmap P:aniiii __mmap mmap __mmap64 mmap64
getpeername - getpeername i:ipp __getpeername getpeername
getpriority - getpriority i:ii __getpriority getpriority
# semaphore and shm system calls
msgctl - msgctl i:iip __msgctl msgctl
msgget - msgget i:ii __msgget msgget
-msgrcv - msgrcv i:ipiii __msgrcv msgrcv
-msgsnd - msgsnd i:ipii __msgsnd msgsnd
+msgrcv - msgrcv i:ibnii __msgrcv msgrcv
+msgsnd - msgsnd i:ibni __msgsnd msgsnd
shmat - shmat i:ipi __shmat shmat
shmctl - shmctl i:iip __shmctl shmctl
shmdt - shmdt i:s __shmdt shmdt
connect - connect i:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername
getsockname - getsockname i:ipp __getsockname getsockname
-getsockopt - getsockopt i:iiipp __getsockopt getsockopt
+getsockopt - getsockopt i:iiiBN __getsockopt getsockopt
listen - listen i:ii __listen listen
-recv - recv i:ipii __libc_recv __recv recv
-recvfrom - recvfrom i:ipiipp __libc_recvfrom __recvfrom recvfrom
+recv - recv i:ibni __libc_recv __recv recv
+recvfrom - recvfrom i:ibnibN __libc_recvfrom __recvfrom recvfrom
recvmsg - recvmsg i:ipi __libc_recvmsg recvmsg
-send - send i:ipii __libc_send __send send
+send - send i:ibni __libc_send __send send
sendmsg - sendmsg i:ipi __libc_sendmsg sendmsg
-sendto - sendto i:ipiipi __libc_sendto __sendto sendto
-setsockopt - setsockopt i:iiipi __setsockopt setsockopt
+sendto - sendto i:ibnibn __libc_sendto __sendto sendto
+setsockopt - setsockopt i:iiibn __setsockopt setsockopt
shutdown - shutdown i:ii __shutdown shutdown
socket - socket i:iii __socket socket
-socketpair - socketpair i:iiip __socketpair socketpair
+socketpair - socketpair i:iiif __socketpair socketpair
# DIG-compliant access to PCI configuration space:
pciconfig_read EXTRA pciconfig_read 5 pciconfig_read
rt_sigaction EXTRA rt_sigaction i:ippi __syscall_rt_sigaction rt_sigaction
rt_sigpending EXTRA rt_sigpending i:pi __syscall_rt_sigpending rt_sigpending
rt_sigprocmask EXTRA rt_sigprocmask i:ippi __syscall_rt_sigprocmask rt_sigprocmask
-rt_sigqueueinfo EXTRA rt_sigqueueinfo i:iip __syscall_rt_sigqueueinfo rt_sigqueueinfo
+rt_sigqueueinfo EXTRA rt_sigqueueinfo i:iip __syscall_rt_sigqueueinfo rt_sigqueueinfo
rt_sigsuspend EXTRA rt_sigsuspend i:pi __syscall_rt_sigsuspend rt_sigsuspend
rt_sigtimedwait EXTRA rt_sigtimedwait i:pppi __syscall_rt_sigtimedwait rt_sigtimedwait
connect - connect i:ipi __libc_connect __connect connect
getpeername - getpeername i:ipp __getpeername getpeername
getsockname - getsockname i:ipp __getsockname getsockname
-getsockopt - getsockopt i:iiipp __getsockopt getsockopt
+getsockopt - getsockopt i:iiiBN __getsockopt getsockopt
listen - listen i:ii __listen listen
-recv - recv i:ipii __libc_recv __recv recv
-recvfrom - recvfrom i:ipiipp __libc_recvfrom __recvfrom recvfrom
+recv - recv i:ibni __libc_recv __recv recv
+recvfrom - recvfrom i:ibnibN __libc_recvfrom __recvfrom recvfrom
recvmsg - recvmsg i:ipi __libc_recvmsg __recvmsg recvmsg
-send - send i:ipii __libc_send __send send
+send - send i:ibni __libc_send __send send
sendmsg - sendmsg i:ipi __libc_sendmsg __sendmsg sendmsg
-sendto - sendto i:ipiipi __libc_sendto __sendto sendto
-setsockopt - setsockopt i:iiipi __setsockopt setsockopt
+sendto - sendto i:ibnibn __libc_sendto __sendto sendto
+setsockopt - setsockopt i:iiibn __setsockopt setsockopt
shutdown - shutdown i:ii __shutdown shutdown
socket - socket i:iii __socket socket
-socketpair - socketpair i:iiip __socketpair socketpair
+socketpair - socketpair i:iiif __socketpair socketpair
#
# These are defined locally because the caller is also defined in this dir.
s_ipc msgget ipc i:iiiip __syscall_ipc
s_lstat64 lxstat64 lstat64 i:sp __syscall_lstat64
s_poll poll poll i:pii __syscall_poll
-s_pread64 pread64 pread i:ipiiii __syscall_pread
+s_pread64 pread64 pread i:ibniii __syscall_pread
s_putpmsg putpmsg putpmsg i:ippii __syscall_putpmsg
s_ptrace ptrace ptrace i:iipp __syscall_ptrace
-s_pwrite64 pwrite64 pwrite i:ipiiii __syscall_pwrite
+s_pwrite64 pwrite64 pwrite i:ibniii __syscall_pwrite
s_reboot reboot reboot i:iii __syscall_reboot
s_setrlimit setrlimit setrlimit i:ip __syscall_setrlimit
s_sigpending sigpending sigpending i:p __syscall_sigpending
getresuid - getresuid i:ppp getresuid
s_getrlimit getrlimit getrlimit i:ip __syscall_getrlimit
s_lstat64 lxstat64 lstat64 i:sp __syscall_lstat64
-s_mmap2 mmap64 mmap2 p:piiiii __syscall_mmap2
+s_mmap2 mmap64 mmap2 P:aniiii __syscall_mmap2
s_poll poll poll i:pii __syscall_poll
-s_pread64 pread64 pread i:ipiii __syscall_pread
+s_pread64 pread64 pread i:ibnii __syscall_pread
s_ptrace ptrace ptrace i:iipp __syscall_ptrace
s_putpmsg putpmsg putpmsg i:ippii __syscall_putpmsg
-s_pwrite64 pwrite64 pwrite i:ipiii __syscall_pwrite
+s_pwrite64 pwrite64 pwrite i:ibnii __syscall_pwrite
s_reboot reboot reboot i:iii __syscall_reboot
s_setrlimit setrlimit setrlimit i:ip __syscall_setrlimit
s_sigaction sigaction sigaction i:ipp __syscall_sigaction
lchown - lchown i:sii __lchown lchown
madvise - madvise i:pii posix_madvise madvise
mincore - mincore i:iip mincore
-mlock EXTRA mlock i:pi __mlock mlock
+mlock EXTRA mlock i:bn __mlock mlock
mlockall EXTRA mlockall i:i __mlockall mlockall
-mmap - mmap p:piiiii __mmap mmap
+mmap - mmap P:aniiii __mmap mmap
mount EXTRA mount i:sssip __mount mount
-mremap EXTRA mremap p:piii __mremap mremap
-munlock EXTRA munlock i:pi __munlock munlock
+mremap EXTRA mremap P:aini __mremap mremap
+munlock EXTRA munlock i:ai __munlock munlock
munlockall EXTRA munlockall i: __munlockall munlockall
nanosleep - nanosleep i:pp __libc_nanosleep __nanosleep nanosleep
nfsservctl EXTRA nfsservctl i:ipp nfsservctl
pause - pause i: __libc_pause pause
personality init-first personality i:i __personality personality
-pipe - pipe i:p __pipe pipe
+pipe - pipe i:f __pipe pipe
prctl EXTRA prctl i:iiiii prctl
query_module EXTRA query_module i:sipip query_module
quotactl EXTRA quotactl i:isip quotactl
projects / external / glibc.git / commitdiff