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/gdbserver/Makefile.in | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'gdb/gdbserver/Makefile.in') diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in index 1ed2ec83bdf..0e442fcd973 100644 --- a/gdb/gdbserver/Makefile.in +++ b/gdb/gdbserver/Makefile.in @@ -155,7 +155,7 @@ SFILES= $(srcdir)/gdbreplay.c $(srcdir)/inferiors.c $(srcdir)/dll.c \ $(srcdir)/linux-m32r-low.c \ $(srcdir)/linux-m68k-low.c $(srcdir)/linux-mips-low.c \ $(srcdir)/linux-nios2-low.c \ - $(srcdir)/linux-ppc-low.c \ + $(srcdir)/linux-ppc-low.c $(srcdir)/nat/ppc-linux.c \ $(srcdir)/linux-s390-low.c \ $(srcdir)/linux-sh-low.c $(srcdir)/linux-sparc-low.c \ $(srcdir)/linux-x86-low.c \ @@ -581,6 +581,9 @@ linux-waitpid.o: ../nat/linux-waitpid.c mips-linux-watch.o: ../nat/mips-linux-watch.c $(COMPILE) $< $(POSTCOMPILE) +ppc-linux.o: ../nat/ppc-linux.c + $(COMPILE) $< + $(POSTCOMPILE) aarch64.c : $(srcdir)/../regformats/aarch64.dat $(regdat_sh) $(SHELL) $(regdat_sh) $(srcdir)/../regformats/aarch64.dat aarch64.c -- cgit v1.2.1