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Tighten up GDB's support for returning structs by value.

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* s390-tdep.c (s390_use_struct_convention): New function.
(s390_gdbarch_init): Register it as the S/390's
USE_STRUCT_CONVENTION method.  Register
generic_cannot_extract_struct_value_address as our
EXTRACT_STRUCT_VALUE_ADDRESS method.
* arch-utils.c (generic_cannot_extract_struct_value_address): New
function.
* arch-utils.h: Add corresponding prototype.
This commit is contained in:
Jim Blandy
2001-11-29 22:24:42 +00:00
parent af667503bb
commit c8f9d51ce2
4 changed files with 41 additions and 2 deletions
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15
gdb/arch-utils.c
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@ -240,6 +240,21 @@ generic_register_convertible_not (int num)
}
/* Under some ABI's that specify the `struct convention' for returning
structures by value, by the time we've returned from the function,
the return value is sitting there in the caller's buffer, but GDB
has no way to find the address of that buffer.
On such architectures, use this function as your
extract_struct_value_address method. When asked to a struct
returned by value in this fashion, GDB will print a nice error
message, instead of garbage. */
CORE_ADDR
generic_cannot_extract_struct_value_address (char *dummy)
{
return 0;
}
int
default_register_sim_regno (int num)
{