You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

34 lines
1.3 KiB

commit d63167affc2a56189e3ba2cc47dd9a3451208b59
Author: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Date: Tue Feb 4 18:26:26 2014 +0100
PowerPC64 little-endian fixes: structure passing
When passing a small structure in a GPR, the ABI specifies that it
should be passed in the least-significant bytes of the register
(or stack slot). On big-endian systems, this means the value
needs to be stored at an offset, which is what current code does.
However, on little-endian systems, the least-significant bytes are
addresses with offset 0. This patch fixes that.
gdb/ChangeLog:
* ppc-sysv-tdep.c (ppc64_sysv_abi_push_val): Use correct
offset on little-endian when passing small structures.
Index: gdb-7.6.1/gdb/ppc-sysv-tdep.c
===================================================================
--- gdb-7.6.1.orig/gdb/ppc-sysv-tdep.c
+++ gdb-7.6.1/gdb/ppc-sysv-tdep.c
@@ -1149,7 +1149,8 @@ ppc64_sysv_abi_push_val (struct gdbarch
doubleword are right-aligned and those larger are left-aligned.
GCC versions before 3.4 implemented this incorrectly; see
<http://gcc.gnu.org/gcc-3.4/powerpc-abi.html>. */
- if (len < tdep->wordsize)
+ if (len < tdep->wordsize
+ && gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
offset = tdep->wordsize - len;
if (argpos->regcache)