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/* 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 (umove(tcp,
(unsigned long) ia64_rse_skip_regs(out0, i),
&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;
}
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