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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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12
gdb/sparc-tdep.c
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@ -1370,15 +1370,21 @@ sparc32_return_value (struct gdbarch *gdbarch, struct value *function,
if (sparc_structure_or_union_p (type)
|| (sparc_floating_p (type) && TYPE_LENGTH (type) == 16))
{
ULONGEST sp;
CORE_ADDR addr;
if (readbuf)
{
ULONGEST sp;
CORE_ADDR addr;
regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
addr = read_memory_unsigned_integer (sp + 64, 4, byte_order);
read_memory (addr, readbuf, TYPE_LENGTH (type));
}
if (writebuf)
{
regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
addr = read_memory_unsigned_integer (sp + 64, 4, byte_order);
write_memory (addr, writebuf, TYPE_LENGTH (type));
}
return RETURN_VALUE_ABI_PRESERVES_ADDRESS;
}