Dmitry V. Levin
e314f808bf
* futex.c: New file. * Makefile.am (strace_SOURCES): Add it. * process.c: Move sys_futex and related code to futex.c.
140 lines
4.0 KiB
C
140 lines
4.0 KiB
C
#include "defs.h"
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#ifdef HAVE_LINUX_FUTEX_H
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# include <linux/futex.h>
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#endif
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#ifndef FUTEX_WAIT
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# define FUTEX_WAIT 0
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#endif
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#ifndef FUTEX_WAKE
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# define FUTEX_WAKE 1
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#endif
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#ifndef FUTEX_FD
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# define FUTEX_FD 2
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#endif
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#ifndef FUTEX_REQUEUE
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# define FUTEX_REQUEUE 3
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#endif
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#ifndef FUTEX_CMP_REQUEUE
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# define FUTEX_CMP_REQUEUE 4
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#endif
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#ifndef FUTEX_WAKE_OP
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# define FUTEX_WAKE_OP 5
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#endif
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#ifndef FUTEX_LOCK_PI
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# define FUTEX_LOCK_PI 6
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# define FUTEX_UNLOCK_PI 7
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# define FUTEX_TRYLOCK_PI 8
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#endif
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#ifndef FUTEX_WAIT_BITSET
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# define FUTEX_WAIT_BITSET 9
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#endif
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#ifndef FUTEX_WAKE_BITSET
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# define FUTEX_WAKE_BITSET 10
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#endif
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#ifndef FUTEX_WAIT_REQUEUE_PI
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# define FUTEX_WAIT_REQUEUE_PI 11
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#endif
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#ifndef FUTEX_CMP_REQUEUE_PI
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# define FUTEX_CMP_REQUEUE_PI 12
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#endif
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#ifndef FUTEX_PRIVATE_FLAG
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# define FUTEX_PRIVATE_FLAG 128
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#endif
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#ifndef FUTEX_CLOCK_REALTIME
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# define FUTEX_CLOCK_REALTIME 256
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#endif
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#ifndef FUTEX_WAIT_PRIVATE
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# define FUTEX_WAIT_PRIVATE (FUTEX_WAIT | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_WAKE_PRIVATE
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# define FUTEX_WAKE_PRIVATE (FUTEX_WAKE | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_REQUEUE_PRIVATE
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# define FUTEX_REQUEUE_PRIVATE (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_CMP_REQUEUE_PRIVATE
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# define FUTEX_CMP_REQUEUE_PRIVATE (FUTEX_CMP_REQUEUE | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_WAKE_OP_PRIVATE
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# define FUTEX_WAKE_OP_PRIVATE (FUTEX_WAKE_OP | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_LOCK_PI_PRIVATE
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# define FUTEX_LOCK_PI_PRIVATE (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_UNLOCK_PI_PRIVATE
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# define FUTEX_UNLOCK_PI_PRIVATE (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_TRYLOCK_PI_PRIVATE
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# define FUTEX_TRYLOCK_PI_PRIVATE (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_WAIT_BITSET_PRIVATE
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# define FUTEX_WAIT_BITSET_PRIVATE (FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_WAKE_BITSET_PRIVATE
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# define FUTEX_WAKE_BITSET_PRIVATE (FUTEX_WAKE_BITSET | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_WAIT_REQUEUE_PI_PRIVATE
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# define FUTEX_WAIT_REQUEUE_PI_PRIVATE (FUTEX_WAIT_REQUEUE_PI | FUTEX_PRIVATE_FLAG)
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#endif
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#ifndef FUTEX_CMP_REQUEUE_PI_PRIVATE
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# define FUTEX_CMP_REQUEUE_PI_PRIVATE (FUTEX_CMP_REQUEUE_PI | FUTEX_PRIVATE_FLAG)
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#endif
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#include "xlat/futexops.h"
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#ifndef FUTEX_OP_SET
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# define FUTEX_OP_SET 0
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# define FUTEX_OP_ADD 1
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# define FUTEX_OP_OR 2
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# define FUTEX_OP_ANDN 3
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# define FUTEX_OP_XOR 4
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# define FUTEX_OP_CMP_EQ 0
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# define FUTEX_OP_CMP_NE 1
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# define FUTEX_OP_CMP_LT 2
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# define FUTEX_OP_CMP_LE 3
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# define FUTEX_OP_CMP_GT 4
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# define FUTEX_OP_CMP_GE 5
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#endif
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#include "xlat/futexwakeops.h"
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#include "xlat/futexwakecmps.h"
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int
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sys_futex(struct tcb *tcp)
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{
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if (entering(tcp)) {
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long int cmd = tcp->u_arg[1] & 127;
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tprintf("%p, ", (void *) tcp->u_arg[0]);
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printxval(futexops, tcp->u_arg[1], "FUTEX_???");
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tprintf(", %ld", tcp->u_arg[2]);
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if (cmd == FUTEX_WAKE_BITSET)
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tprintf(", %lx", tcp->u_arg[5]);
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else if (cmd == FUTEX_WAIT) {
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tprints(", ");
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printtv(tcp, tcp->u_arg[3]);
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} else if (cmd == FUTEX_WAIT_BITSET) {
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tprints(", ");
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printtv(tcp, tcp->u_arg[3]);
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tprintf(", %lx", tcp->u_arg[5]);
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} else if (cmd == FUTEX_REQUEUE)
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tprintf(", %ld, %p", tcp->u_arg[3], (void *) tcp->u_arg[4]);
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else if (cmd == FUTEX_CMP_REQUEUE || cmd == FUTEX_CMP_REQUEUE_PI)
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tprintf(", %ld, %p, %ld", tcp->u_arg[3], (void *) tcp->u_arg[4], tcp->u_arg[5]);
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else if (cmd == FUTEX_WAKE_OP) {
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tprintf(", %ld, %p, {", tcp->u_arg[3], (void *) tcp->u_arg[4]);
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if ((tcp->u_arg[5] >> 28) & 8)
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tprints("FUTEX_OP_OPARG_SHIFT|");
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printxval(futexwakeops, (tcp->u_arg[5] >> 28) & 0x7, "FUTEX_OP_???");
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tprintf(", %ld, ", (tcp->u_arg[5] >> 12) & 0xfff);
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if ((tcp->u_arg[5] >> 24) & 8)
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tprints("FUTEX_OP_OPARG_SHIFT|");
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printxval(futexwakecmps, (tcp->u_arg[5] >> 24) & 0x7, "FUTEX_OP_CMP_???");
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tprintf(", %ld}", tcp->u_arg[5] & 0xfff);
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} else if (cmd == FUTEX_WAIT_REQUEUE_PI) {
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tprints(", ");
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printtv(tcp, tcp->u_arg[3]);
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tprintf(", %p", (void *) tcp->u_arg[4]);
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}
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}
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return 0;
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}
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