Dmitry V. Levin
9284ce55f0
If the kernel contains commit 84d77d3f06e7e8dea057d10e8ec77ad71f721be3, PTRACE_PEEKTEXT becames unavailable when the process dumpable flag is cleared. As this is not a fatal condition for get_scno, do not bail out if PTRACE_PEEKTEXT fails. This condition is triggered and therefore tested by prctl-dumpable test. * linux/sparc64/get_scno.c (arch_get_scno): Do not bail out if PTRACE_PEEKTEXT fails.
26 lines
556 B
C
26 lines
556 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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/* Retrieve the syscall trap instruction. */
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unsigned long trap;
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errno = 0;
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trap = ptrace(PTRACE_PEEKTEXT, tcp->pid, (void *) sparc_regs.tpc, 0);
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if (errno == 0) {
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trap >>= 32;
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switch (trap) {
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case 0x91d02010:
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/* Linux/SPARC syscall trap. */
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update_personality(tcp, 1);
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break;
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case 0x91d0206d:
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/* Linux/SPARC64 syscall trap. */
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update_personality(tcp, 0);
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break;
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}
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}
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tcp->scno = sparc_regs.u_regs[U_REG_G1];
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return 1;
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}
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