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syscall.c: factor out ptrace_getregs from get_regs

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Move the code that calls ptrace(PTRACE_GETREGS) to a separate function.

* syscall.c (ptrace_getregs): New function.
(get_regs): Use it.
This commit is contained in:
Дмитрий Левин 2016-11-12 10:44:18 +00:00
parent 1d886734c7
commit c93f39ca5b
1 changed files with 18 additions and 8 deletions
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26
syscall.c
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@ -1250,7 +1250,21 @@ ptrace_getregset(pid_t pid)
# endif
}
#endif /* ARCH_REGS_FOR_GETREGSET */
#elif defined ARCH_REGS_FOR_GETREGS
static long
ptrace_getregs(pid_t pid)
{
# if defined SPARC || defined SPARC64
/* SPARC systems have the meaning of data and addr reversed */
return ptrace(PTRACE_GETREGS, pid, (void *) &ARCH_REGS_FOR_GETREGS, 0);
# else
return ptrace(PTRACE_GETREGS, pid, NULL, &ARCH_REGS_FOR_GETREGS);
# endif
}
#endif /* ARCH_REGS_FOR_GETREGSET || ARCH_REGS_FOR_GETREGS */
void
get_regs(pid_t pid)
@ -1279,15 +1293,11 @@ get_regs(pid_t pid)
get_regs_error = ptrace_getregset(pid);
# endif
#elif defined ARCH_REGS_FOR_GETREGS
# if defined SPARC || defined SPARC64
/* SPARC systems have the meaning of data and addr reversed */
get_regs_error =
ptrace(PTRACE_GETREGS, pid, (void *) &ARCH_REGS_FOR_GETREGS, 0);
# elif defined POWERPC
# ifdef POWERPC
static bool old_kernel = 0;
if (old_kernel)
goto old;
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &ARCH_REGS_FOR_GETREGS);
get_regs_error = ptrace_getregs(pid);
if (get_regs_error && errno == EIO) {
old_kernel = 1;
old:
@ -1295,7 +1305,7 @@ get_regs(pid_t pid)
}
# else
/* Assume that PTRACE_GETREGS works. */
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &ARCH_REGS_FOR_GETREGS);
get_regs_error = ptrace_getregs(pid);
# endif
#else /* !ARCH_REGS_FOR_GETREGSET && !ARCH_REGS_FOR_GETREGS */