This commit is for Bugzilla 334834. The Bugzilla contains patch 2 of 3
to add PPC64 LE support. The other two patches can be found in Bugzillas
334384 and 334836.
POWER PC, add the functional Little Endian support, patch 2
The IBM POWER processor now supports both Big Endian and Little Endian.
The ABI for Little Endian also changes. Specifically, the function
descriptor is not used, the stack size changed, accessing the TOC
changed. Functions now have a local and a global entry point. Register
r2 contains the TOC for local calls and register r12 contains the TOC
for global calls. This patch makes the functional changes to the
Valgrind tool. The patch makes the changes needed for the
none/tests/ppc32 and none/tests/ppc64 Makefile.am. A number of the
ppc specific tests have Endian dependencies that are not fixed in
this patch. They are fixed in the next patch.
Per Julian's comments renamed coregrind/m_dispatch/dispatch-ppc64-linux.S
to coregrind/m_dispatch/dispatch-ppc64be-linux.S Created new file for LE
coregrind/m_dispatch/dispatch-ppc64le-linux.S. The same was done for
coregrind/m_syswrap/syscall-ppc-linux.S.
Signed-off-by: Carl Love <carll@us.ibm.com>
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14239 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vgdb-invoker-ptrace.c b/coregrind/vgdb-invoker-ptrace.c
index b9bcaee..f96013b 100644
--- a/coregrind/vgdb-invoker-ptrace.c
+++ b/coregrind/vgdb-invoker-ptrace.c
@@ -1034,6 +1034,16 @@
user_mod.regs.gpr[3] = check;
/* put bad_return return address in Link Register */
user_mod.regs.link = bad_return;
+#elif defined(VGA_ppc64le)
+ /* LE does not use the function pointer structure used in BE */
+ user_mod.regs.nip = shared64->invoke_gdbserver;
+ user_mod.regs.gpr[1] = sp - 512;
+ user_mod.regs.gpr[12] = user_mod.regs.nip;
+ user_mod.regs.trap = -1L;
+ /* put check arg in register 3 */
+ user_mod.regs.gpr[3] = check;
+ /* put bad_return return address in Link Register */
+ user_mod.regs.link = bad_return;
#elif defined(VGA_s390x)
/* put check arg in register r2 */
user_mod.regs.gprs[2] = check;