25 lines
548 B
C
25 lines
548 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)
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return -1;
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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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tcp->scno = sparc_regs.u_regs[U_REG_G1];
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return 1;
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}
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