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commit 5b757e5ddbd9ad252d9c51103f1aa52b41c2e947
Author: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Date: Tue Feb 4 18:33:04 2014 +0100
PowerPC64 little-endian fixes: 32-bit DFP parameters
Passing a 32-bit DFP in register needs to use the least-significant part
of the register. Like with a previous patch that addressed the same
issue for small structs, this patch makes sure the appropriate offset
is used on little-endian systems.
gdb/ChangeLog:
* ppc-sysv-tdep.c (ppc64_sysv_abi_push_freg): Use correct
offset on little-endian when passing _Decimal32.
(ppc64_sysv_abi_return_value_base): Likewise for return values.
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
@@ -1231,7 +1231,10 @@ ppc64_sysv_abi_push_freg (struct gdbarch
if (argpos->regcache && argpos->freg <= 13)
{
int regnum = tdep->ppc_fp0_regnum + argpos->freg;
- int offset = 8 - TYPE_LENGTH (type);
+ int offset = 0;
+
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+ offset = 8 - TYPE_LENGTH (type);
regcache_cooked_write_part (argpos->regcache, regnum,
offset, TYPE_LENGTH (type), val);
@@ -1640,7 +1643,10 @@ ppc64_sysv_abi_return_value_base (struct
&& TYPE_CODE (valtype) == TYPE_CODE_DECFLOAT)
{
int regnum = tdep->ppc_fp0_regnum + 1 + index;
- int offset = 8 - TYPE_LENGTH (valtype);
+ int offset = 0;
+
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+ offset = 8 - TYPE_LENGTH (valtype);
if (writebuf != NULL)
regcache_cooked_write_part (regcache, regnum,