From cdf436294f7e0e3bd7668a81dfd5922fdd1aec14 Mon Sep 17 00:00:00 2001 From: Yao Qi Date: Fri, 28 Nov 2014 09:18:26 +0800 Subject: Detect 64-bit-ness in PowerPC Book III-E This patch is to teach both GDB and GDBServer to detect 64-bit inferior correctly. We find a problem that GDBServer is unable to detect on a e5500 core processor. Current GDBServer assumes that MSR is a 64-bit register, but MSR is a 32-bit register in Book III-E. This patch is to fix this problem by checking the right bit in MSR, in order to handle both Book III-S and Book III-E. In order to detect Book III-S and Book III-E, we check the PPC_FEATURE_BOOKE from the host's HWCAP (by getauxval on glibc >= 2.16. If getauxval doesn't exist, we implement the fallback by parsing /proc/self/auxv), because it should an invariant on the same machine cross different processes. In order to share code, I add nat/ppc-linux.c for both GDB and GDBserver side. gdb: 2015-01-14 Yao Qi * Makefile.in (ppc-linux.o): New rule. * config/powerpc/ppc64-linux.mh (NATDEPFILES): Add ppc-linux.o. * configure.ac: AC_CHECK_FUNCS(getauxval). * config.in: Re-generated. * configure: Re-generated. * nat/ppc-linux.h [__powerpc64__] (ppc64_64bit_inferior_p): Declare. * nat/ppc-linux.c: New file. * ppc-linux-nat.c (ppc_linux_target_wordsize) [__powerpc64__]: Call ppc64_64bit_inferior_p. gdb/gdbserver: 2015-01-14 Yao Qi * Makefile.in (SFILES): Add nat/ppc-linux.c. (ppc-linux.o): New rule. * configure.srv (powerpc*-*-linux*): Add ppc-linux.o. * configure.ac: AC_CHECK_FUNCS(getauxval). * config.in: Re-generated. * configure: Re-generated. * linux-ppc-low.c (ppc_arch_setup) [__powerpc64__]: Call ppc64_64bit_inferior_p --- gdb/configure | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'gdb/configure') diff --git a/gdb/configure b/gdb/configure index 7ff74ba..fdcf215 100755 --- a/gdb/configure +++ b/gdb/configure @@ -10490,7 +10490,7 @@ $as_echo "#define HAVE_WORKING_FORK 1" >>confdefs.h fi -for ac_func in getrusage getuid getgid \ +for ac_func in getauxval getrusage getuid getgid \ pipe poll pread pread64 pwrite resize_term \ sbrk setpgid setpgrp setsid \ sigaction sigprocmask sigsetmask socketpair \ -- cgit v1.1