1 /* Return -1 on error or 1 on success (never 0!). */ 2 static int 3 get_syscall_args(struct tcb *tcp) 4 { 5 if (!ia64_ia32mode) { 6 unsigned long *rbs_end = 7 (unsigned long *) ia64_regs.ar[PT_AUR_BSP]; 8 unsigned long sof = (ia64_regs.cfm >> 0) & 0x7f; 9 unsigned long sol = (ia64_regs.cfm >> 7) & 0x7f; 10 unsigned long *out0 = ia64_rse_skip_regs(rbs_end, -sof + sol); 11 unsigned int i; 12 13 for (i = 0; i < tcp->s_ent->nargs; ++i) { 14 if (umoven(tcp, 15 (unsigned long) ia64_rse_skip_regs(out0, i), 16 sizeof(long), &tcp->u_arg[i]) < 0) 17 return -1; 18 } 19 } else { 20 /* truncate away IVE sign-extension */ 21 tcp->u_arg[0] = 0xffffffff & ia64_regs.gr[11]; /* EBX */ 22 tcp->u_arg[1] = 0xffffffff & ia64_regs.gr[ 9]; /* ECX */ 23 tcp->u_arg[2] = 0xffffffff & ia64_regs.gr[10]; /* EDX */ 24 tcp->u_arg[3] = 0xffffffff & ia64_regs.gr[14]; /* ESI */ 25 tcp->u_arg[4] = 0xffffffff & ia64_regs.gr[15]; /* EDI */ 26 tcp->u_arg[5] = 0xffffffff & ia64_regs.gr[13]; /* EBP */ 27 } 28 return 1; 29 } 30
