|
 |
01917d |
commit 52f548e41f085550d7740c350c1c8a239532af77
|
|
|
01917d |
Author: Ulrich Weigand <ulrich.weigand@de.ibm.com>
|
|
|
01917d |
Date: Tue Feb 4 18:41:36 2014 +0100
|
|
|
01917d |
|
|
|
01917d |
PowerPC64 ELFv2 ABI: stack frame layout changes
|
|
|
01917d |
|
|
|
01917d |
This implementes another change in ELFv2: the stack frame no longer
|
|
|
01917d |
contains the reserved double words for linker and compiler use
|
|
|
01917d |
(which weren't really used for much of anything anyway). This
|
|
|
01917d |
affects placement of on-stack parameters in inferior calls.
|
|
|
01917d |
|
|
|
01917d |
gdb/ChangeLog:
|
|
|
01917d |
|
|
|
01917d |
* ppc-sysv-tdep.c (ppc64_sysv_abi_push_dummy_call): Use correct
|
|
|
01917d |
offset to the stack parameter list for the ELFv2 ABI.
|
|
|
01917d |
|
|
|
01917d |
Index: gdb-7.6.1/gdb/ppc-sysv-tdep.c
|
|
|
01917d |
===================================================================
|
|
|
01917d |
--- gdb-7.6.1.orig/gdb/ppc-sysv-tdep.c
|
|
|
01917d |
+++ gdb-7.6.1/gdb/ppc-sysv-tdep.c
|
|
|
01917d |
@@ -1473,9 +1473,13 @@ ppc64_sysv_abi_push_dummy_call (struct g
|
|
|
01917d |
argpos.regcache = regcache;
|
|
|
01917d |
argpos.refparam = align_down (sp - refparam_size, 16);
|
|
|
01917d |
argpos.gparam = align_down (argpos.refparam - gparam_size, 16);
|
|
|
01917d |
- /* Add in space for the TOC, link editor double word,
|
|
|
01917d |
- compiler double word, LR save area, CR save area. */
|
|
|
01917d |
- sp = align_down (argpos.gparam - 48, 16);
|
|
|
01917d |
+ /* Add in space for the TOC, link editor double word (v1 only),
|
|
|
01917d |
+ compiler double word (v1 only), LR save area, CR save area,
|
|
|
01917d |
+ and backchain. */
|
|
|
01917d |
+ if (tdep->elf_abi == POWERPC_ELF_V1)
|
|
|
01917d |
+ sp = align_down (argpos.gparam - 48, 16);
|
|
|
01917d |
+ else
|
|
|
01917d |
+ sp = align_down (argpos.gparam - 32, 16);
|
|
|
01917d |
}
|
|
|
01917d |
|
|
|
01917d |
/* If the function is returning a `struct', then there is an
|