strace/sigaltstack.c
Dmitry V. Levin 401295ea32 sigaltstack.c: use printaddr and umove_or_printaddr
* sigaltstack.c (print_stack_t): Use umove_or_printaddr and printaddr.
2015-07-17 01:16:16 +00:00

46 lines
976 B
C

#include "defs.h"
#include "xlat/sigaltstack_flags.h"
static void
print_stack_t(struct tcb *tcp, unsigned long addr)
{
stack_t ss;
#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
if (current_wordsize != sizeof(ss.ss_sp) && current_wordsize == 4) {
struct {
uint32_t ss_sp;
int32_t ss_flags;
uint32_t ss_size;
} ss32;
if (umove_or_printaddr(tcp, addr, &ss32))
return;
memset(&ss, 0, sizeof(ss));
ss.ss_sp = (void*)(unsigned long) ss32.ss_sp;
ss.ss_flags = ss32.ss_flags;
ss.ss_size = (unsigned long) ss32.ss_size;
} else
#endif
if (umove_or_printaddr(tcp, addr, &ss))
return;
tprints("{ss_sp=");
printaddr((unsigned long) ss.ss_sp);
tprints(", ss_flags=");
printflags(sigaltstack_flags, ss.ss_flags, "SS_???");
tprintf(", ss_size=%lu}", (unsigned long) ss.ss_size);
}
SYS_FUNC(sigaltstack)
{
if (entering(tcp)) {
print_stack_t(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
print_stack_t(tcp, tcp->u_arg[1]);
}
return 0;
}