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Allow struct 'return' on 32-bit sparc.

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gdb/

	* sparc-tdep.c (sparc32_return_value): Handle writing return value when
	using RETURN_VALUE_ABI_PRESERVES_ADDRESS.
	* value.c (struct_return_convention): New function.
	(using_struct_return): Implement in terms of struct_return_convention.
	* value.h (struct_return_convention): Declare.
	* stack.c (return_command): Allow successful overriding of the return
	value when RETURN_VALUE_ABI_PRESERVES_ADDRESS.
This commit is contained in:
David S. Miller 2013-02-06 19:40:04 +00:00
parent bc9abe4a91
commit bbfdfe1c57
5 changed files with 57 additions and 22 deletions
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28
gdb/value.c
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@ -3323,6 +3323,23 @@ coerce_array (struct value *arg)
}
/* Return the return value convention that will be used for the
specified type. */
enum return_value_convention
struct_return_convention (struct gdbarch *gdbarch,
struct value *function, struct type *value_type)
{
enum type_code code = TYPE_CODE (value_type);
if (code == TYPE_CODE_ERROR)
error (_("Function return type unknown."));
/* Probe the architecture for the return-value convention. */
return gdbarch_return_value (gdbarch, function, value_type,
NULL, NULL, NULL);
}
/* Return true if the function returning the specified type is using
the convention of returning structures in memory (passing in the
address as a hidden first parameter). */
@ -3331,19 +3348,12 @@ int
using_struct_return (struct gdbarch *gdbarch,
struct value *function, struct type *value_type)
{
enum type_code code = TYPE_CODE (value_type);
if (code == TYPE_CODE_ERROR)
error (_("Function return type unknown."));
if (code == TYPE_CODE_VOID)
if (TYPE_CODE (value_type) == TYPE_CODE_VOID)
/* A void return value is never in memory. See also corresponding
code in "print_return_value". */
return 0;
/* Probe the architecture for the return-value convention. */
return (gdbarch_return_value (gdbarch, function, value_type,
NULL, NULL, NULL)
return (struct_return_convention (gdbarch, function, value_type)
!= RETURN_VALUE_REGISTER_CONVENTION);
}