... just as Fred Fish recently did for the o64 version.
------------------------------------------------------------------------
2006-05-31 Michael Snyder <msnyder@redhat.com>
* mips-tdep.c (mips_eabi_return_value): Replace stub that always
returned RETURN_VALUE_STRUCT_CONVENTION with a real function.
Index: mips-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/mips-tdep.c,v
retrieving revision 1.393
diff -p -r1.393 mips-tdep.c
*** mips-tdep.c 31 May 2006 23:15:50 -0000 1.393
--- mips-tdep.c 31 May 2006 23:52:56 -0000
*************** mips_eabi_return_value (struct gdbarch *
*** 2651,2664 ****
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
if (TYPE_LENGTH (type) > 2 * mips_abi_regsize (gdbarch))
return RETURN_VALUE_STRUCT_CONVENTION;
! if (readbuf)
! memset (readbuf, 0, TYPE_LENGTH (type));
return RETURN_VALUE_REGISTER_CONVENTION;
}
-
/* N32/N64 ABI stuff. */
static CORE_ADDR
--- 2651,2712 ----
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ int fp_return_type = 0;
+ int offset, regnum, xfer;
+
if (TYPE_LENGTH (type) > 2 * mips_abi_regsize (gdbarch))
return RETURN_VALUE_STRUCT_CONVENTION;
!
! /* Floating point type? */
! if (tdep->mips_fpu_type != MIPS_FPU_NONE)
! {
! if (TYPE_CODE (type) == TYPE_CODE_FLT)
! fp_return_type = 1;
! /* Structs with a single field of float type
! are returned in a floating point register. */
! if ((TYPE_CODE (type) == TYPE_CODE_STRUCT
! || TYPE_CODE (type) == TYPE_CODE_UNION)
! && TYPE_NFIELDS (type) == 1)
! {
! struct type *fieldtype = TYPE_FIELD_TYPE (type, 0);
!
! if (TYPE_CODE (check_typedef (fieldtype)) == TYPE_CODE_FLT)
! fp_return_type = 1;
! }
! }
!
! if (fp_return_type)
! {
! /* A floating-point value belongs in the least significant part
! of FP0/FP1. */
! if (mips_debug)
! fprintf_unfiltered (gdb_stderr, "Return float in $fp0\n");
! regnum = mips_regnum (gdbarch)->fp0;
! }
! else
! {
! /* An integer value goes in V0/V1. */
! if (mips_debug)
! fprintf_unfiltered (gdb_stderr, "Return scalar in $v0\n");
! regnum = MIPS_V0_REGNUM;
! }
! for (offset = 0;
! offset < TYPE_LENGTH (type);
! /* offset += register_size (gdbarch, regnum), regnum++) */
! offset += mips_stack_argsize (gdbarch), regnum++)
! {
! /* xfer = register_size (gdbarch, regnum); */
! xfer = mips_stack_argsize (gdbarch);
! if (offset + xfer > TYPE_LENGTH (type))
! xfer = TYPE_LENGTH (type) - offset;
! mips_xfer_register (regcache, NUM_REGS + regnum, xfer,
! TARGET_BYTE_ORDER, readbuf, writebuf, offset);
! }
!
return RETURN_VALUE_REGISTER_CONVENTION;
}
/* N32/N64 ABI stuff. */
static CORE_ADDR