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27 lines
604 B
27 lines
604 B
#include <asm/rse.h>
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/* Return -1 on error or 1 on success (never 0!). */
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static int
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get_syscall_args(struct tcb *tcp)
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{
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unsigned long *rbs_end =
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(unsigned long *) ia64_regs.ar[PT_AUR_BSP];
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unsigned long sof = (ia64_regs.cfm >> 0) & 0x7f;
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unsigned long sol = (ia64_regs.cfm >> 7) & 0x7f;
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unsigned long *out0 = ia64_rse_skip_regs(rbs_end, -sof + sol);
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unsigned int i;
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for (i = 0; i < tcp->s_ent->nargs; ++i) {
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if (umove(tcp,
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(unsigned long) ia64_rse_skip_regs(out0, i),
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&tcp->u_arg[i]) < 0) {
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if (errno == EPERM)
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tcp->u_arg[i] = 0;
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else
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return -1;
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}
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}
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return 1;
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}
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