hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
27 lines
510 B
C
27 lines
510 B
C
/* Return codes: 1 - ok, 0 - ignore, other - error. */
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static int
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arch_get_scno(struct tcb *tcp)
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{
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kernel_ulong_t scno = 0;
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if (upeek(tcp, REG_A3, &alpha_a3) < 0)
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return -1;
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if (upeek(tcp, REG_R0, &scno) < 0)
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return -1;
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/*
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* Do some sanity checks to figure out if it's
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* really a syscall entry
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*/
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if (!scno_in_range(scno)) {
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if (alpha_a3 == 0 || alpha_a3 == -1UL) {
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if (debug_flag)
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error_msg("stray syscall exit: r0 = %lu", scno);
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return 0;
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}
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}
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tcp->scno = scno;
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return 1;
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}
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