rules do not treat composite types specially.
+2007-09-21 David Ung <davidu@mips.com>
+ Maciej W. Rozycki <macro@mips.com>
+
+ * mips-tdep.c (mips_n32n64_push_dummy_call): Per N32/N64 ABI
+ rules do not treat composite types specially.
+
2007-09-20 Maciej W. Rozycki <macro@mips.com>
* mips-tdep.c (mips32_in_function_epilogue_p): New function.
2007-09-20 Maciej W. Rozycki <macro@mips.com>
* mips-tdep.c (mips32_in_function_epilogue_p): New function.
/* Copy the argument to general registers or the stack in
register-sized pieces. Large arguments are split between
registers and stack. */
/* Copy the argument to general registers or the stack in
register-sized pieces. Large arguments are split between
registers and stack. */
- /* Note: structs whose size is not a multiple of MIPS64_REGSIZE
- are treated specially: Irix cc passes them in registers
- where gcc sometimes puts them on the stack. For maximum
- compatibility, we will put them in both places. */
- int odd_sized_struct = (len > MIPS64_REGSIZE
- && len % MIPS64_REGSIZE != 0);
+ /* For N32/N64, structs, unions, or other composite types are
+ treated as a sequence of doublewords, and are passed in integer
+ or floating point registers as though they were simple scalar
+ parameters to the extent that they fit, with any excess on the
+ stack packed according to the normal memory layout of the
+ object.
+ The caller does not reserve space for the register arguments;
+ the callee is responsible for reserving it if required. */
/* Note: Floating-point values that didn't fit into an FP
register are only written to memory. */
while (len > 0)
/* Note: Floating-point values that didn't fit into an FP
register are only written to memory. */
while (len > 0)
gdb_assert (argreg > MIPS_LAST_ARG_REGNUM);
/* Write this portion of the argument to the stack. */
gdb_assert (argreg > MIPS_LAST_ARG_REGNUM);
/* Write this portion of the argument to the stack. */
- if (argreg > MIPS_LAST_ARG_REGNUM
- || odd_sized_struct)
+ if (argreg > MIPS_LAST_ARG_REGNUM)
{
/* Should shorter than int integer values be
promoted to int before being stored? */
{
/* Should shorter than int integer values be
promoted to int before being stored? */