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