* m68k-tdep.h (struct gdbarch_tdep): Add member

struct_value_regnum.
(m68k_svr4_init_abi): New prototype.
* m68k-tdep.c: Include "floatformat.h".  Add comment about all the
different calling conventions.
(m68k_extract_return_value): Remove code dealing with single-field
structs.
(m68k_store_return_value): Remove code dealing with single-field
structs.  Correctly store return values of 5, 6, 7 or 8 bytes.
(m68k_extract_struct_value_address): Remove function.
(m68k_svr4_extract_return_value,m68k_svr4_store_return_value)
(m68k_reg_struct_return_p, m68k_return_value)
(m68k_svr4_return_value): New functions.
(m68k_use_struct_convention): Remove function.
(m68k_push_dummy_call): Use new struct_value_regnum member of
`struct gdbarch_tdep' instead of hardcoded register number to
store STRUCT_ADDR.
(m68k_svr4_init_abi): New function.
(m68k_gdbarch_init): Don't set extract_return_value,
store_return_values, deprecated_extract_struct_value_address and
use_struct_convention.  Set return_value instead.  Initialize new
struct_value_regnum member of `struct gdbarch_tdep'.
* m68klinux-tdep.c: Update copyright year.
(m68k_linux_extract_return_value, m68k_linux_store_return_value)
(m68k_linux_extract_struct_value_address): Remove function.
(m68k_linux_init_abi): Don't set extract_return_value,
store_return_values, deprecated_extract_struct_value_address and
use_struct_convention.  Call m68k_svr4_init_abi but override the
new struct_value_regnum member of `struct gdbarch_tdep'.
* Makefile.in (m68k-tdep.o): Update dependencies.

1 files changed, 8 insertions, 0 deletions

diff --git a/gdb/m68k-tdep.h b/gdb/m68k-tdep.h
index be28d88..2952962 100644
--- a/gdb/m68k-tdep.h
+++ b/gdb/m68k-tdep.h
@@ -67,10 +67,18 @@ struct gdbarch_tdep
   /* The size of each entry in the jump buffer.  */
   size_t jb_elt_size;
 
+  /* Register in which the address to store a structure value is
+     passed to a function.  */
+  int struct_value_regnum;
+
   /* Convention for returning structures.  */
   enum struct_return struct_return;
 };
 
+/* Initialize a SVR4 architecture variant.  */
+extern void m68k_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
+
+
 /* Functions exported from m68kbsd-tdep.c.  */
 
 extern int m68kbsd_fpreg_offset (int regnum);