[PATCH v4 13/14] add s390_gcc_target_options

Jan Kratochvil
2014-11-23T19:28:58Z

This adds s390_gcc_target_options, an implementation of the new
"gcc_target_options" gdbarch method. This was needed because the
default implementation of the method doesn't work properly for S390,
as this architecture needs "-m31" rather than "-m32".

2014-10-07 Jan Kratochvil <jan.kratochvil@redhat.com>

* s390-linux-tdep.c (s390_gcc_target_options): New function.
(s390_gdbarch_init): Add it to gdbarch.
---
gdb/ChangeLog | 5 +++++
gdb/s390-linux-tdep.c | 9 +++++++++
2 files changed, 14 insertions(+)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 114fa0f..830593f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
2014-10-07 Jan Kratochvil <jan.kratochvil@redhat.com>

+ * s390-linux-tdep.c (s390_gcc_target_options): New function.
+ (s390_gdbarch_init): Add it to gdbarch.
+
+2014-10-07 Jan Kratochvil <jan.kratochvil@redhat.com>
+
* linux-tdep.c: Include objfiles.h and infcall.h.
(GDB_MMAP_MAP_PRIVATE, GDB_MMAP_MAP_ANONYMOUS, linux_infcall_mmap): New
function.
diff --git a/gdb/s390-linux-tdep.c b/gdb/s390-linux-tdep.c
index b5d94ce..5dcf40c 100644
--- a/gdb/s390-linux-tdep.c
+++ b/gdb/s390-linux-tdep.c
@@ -2808,6 +2808,14 @@ s390_address_class_name_to_type_flags (struct gdbarch *gdbarch,
return 0;
}

+/* Implement gdbarch_gcc_target_options. GCC does not know "-m32". */
+
+static char *
+s390_gcc_target_options (struct gdbarch *gdbarch)
+{
+ return xstrdup ("-m31");
+}
+
/* Implementation of `gdbarch_stap_is_single_operand', as defined in
gdbarch.h. */

@@ -3104,6 +3112,7 @@ s390_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
case ABI_LINUX_S390:
set_gdbarch_addr_bits_remove (gdbarch, s390_addr_bits_remove);
+ set_gdbarch_gcc_target_options (gdbarch, s390_gcc_target_options);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);