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Re: [patch/rfc:rfa:doco] Deprecate extract_struct_value_address


Ref: [rfc] Struct return values

This deprecates the existing extract_struct_value_address, clearing the way for a replacement such as extract_returned_value_address.

As the comments note, other than the 32-bit SPARC, no ABI has so far been identified that allows for the robust implementation of an extract struct-convention return-value's address method. Further, a quick glance through the remaining extract methods suggests that they too are broken - the're all trying to extract the return-value from a register and typical ABIs don't guarentee that the return-value address register is preserved across function calls.

The patch also adds a bunch of comments to core-GDB to [hopefully] point the way to the required changes needed to make the 32-bit SPARC ABIs case work. I don't have a SPARC handy so MarkK, over to you :-/

Comments? I'll give this part a week.

I've checked this in.


2004-01-17 Andrew Cagney <>

	comments mentioning extract_returned_value_address.
	* infcmd.c (print_return_value): Update.  Add comments on
	* stack.c (return_command): Add comments on
	* values.c: Update comment.
	* m32r-tdep.c: Update comment.
	* sparc-tdep.c: Update comment.
	* ia64-tdep.c (ia64_use_struct_convention): Update comment.
	* xstormy16-tdep.c (xstormy16_gdbarch_init): Update.
	* sh64-tdep.c (sh64_gdbarch_init): Update.
	* sh-tdep.c (sh_gdbarch_init): Update.
	* s390-tdep.c (s390_gdbarch_init): Update.
	* rs6000-tdep.c (rs6000_gdbarch_init): Update.
	* m68klinux-tdep.c (m68k_linux_init_abi): Update.
	* m68k-tdep.c (m68k_gdbarch_init): Update.
	* m68hc11-tdep.c (m68hc11_gdbarch_init): Update.
	* m32r-tdep.c (m32r_gdbarch_init): Update.
	* ia64-tdep.c (ia64_gdbarch_init): Update.
	* h8300-tdep.c (h8300_gdbarch_init): Update.
	* frv-tdep.c (frv_gdbarch_init): Update.
	* arm-tdep.c (arm_gdbarch_init): Update.
	* alpha-tdep.c (alpha_gdbarch_init): Update.

Index: doc/ChangeLog
2004-01-17  Andrew Cagney  <>

	* gdbint.texinfo (Target Architecture Definition): Rename

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