/* Target-dependent code for PowerPC systems running NetBSD.
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright 2002, 2003 Free Software Foundation, Inc.
Contributed by Wasabi Systems, Inc.
This file is part of GDB.
#include "target.h"
#include "breakpoint.h"
#include "value.h"
+#include "osabi.h"
#include "ppc-tdep.h"
#include "ppcnbsd-tdep.h"
NULL /* next */
};
+static int
+ppcnbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
+{
+ /* FIXME: Need to add support for kernel-provided signal trampolines. */
+ return (nbsd_pc_in_sigtramp (pc, func_name));
+}
+
+/* NetBSD is confused. It appears that 1.5 was using the correct SVr4
+ convention but, 1.6 switched to the below broken convention. For
+ the moment use the broken convention. Ulgh!. */
+
+static enum return_value_convention
+ppcnbsd_return_value (struct gdbarch *gdbarch, struct type *valtype,
+ struct regcache *regcache, void *readbuf,
+ const void *writebuf)
+{
+ if ((TYPE_CODE (valtype) == TYPE_CODE_STRUCT
+ || TYPE_CODE (valtype) == TYPE_CODE_UNION)
+ && !((TYPE_LENGTH (valtype) == 16 || TYPE_LENGTH (valtype) == 8)
+ && TYPE_VECTOR (valtype))
+ && !(TYPE_LENGTH (valtype) == 1
+ || TYPE_LENGTH (valtype) == 2
+ || TYPE_LENGTH (valtype) == 4
+ || TYPE_LENGTH (valtype) == 8))
+ return RETURN_VALUE_STRUCT_CONVENTION;
+ else
+ return ppc_sysv_abi_broken_return_value (gdbarch, valtype, regcache,
+ readbuf, writebuf);
+}
+
static void
ppcnbsd_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
- /* Until November 2001, gcc was not complying to the SYSV ABI for
- returning structures less than or equal to 8 bytes in size. It was
- returning everything in memory. When this was corrected, it wasn't
- fixed for native platforms. */
- set_gdbarch_use_struct_convention (gdbarch,
- ppc_sysv_abi_broken_use_struct_convention);
-
+ set_gdbarch_pc_in_sigtramp (gdbarch, ppcnbsd_pc_in_sigtramp);
+ /* For NetBSD, this is an on again, off again thing. Some systems
+ do use the broken struct convention, and some don't. */
+ set_gdbarch_return_value (gdbarch, ppcnbsd_return_value);
set_solib_svr4_fetch_link_map_offsets (gdbarch,
nbsd_ilp32_solib_svr4_fetch_link_map_offsets);
}
void
_initialize_ppcnbsd_tdep (void)
{
- gdbarch_register_osabi (bfd_arch_powerpc, GDB_OSABI_NETBSD_ELF,
+ gdbarch_register_osabi (bfd_arch_powerpc, 0, GDB_OSABI_NETBSD_ELF,
ppcnbsd_init_abi);
add_core_fns (&ppcnbsd_core_fns);