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Changed ABI to match a GCC change. Structs passed by value are always 

passed using a pointer.
This commit is contained in:
Zdenek Radouch 1999-01-15 22:17:00 +00:00
parent 93b84526e8
commit 517b49896a
2 changed files with 19 additions and 2 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
Fri Jan 15 17:11:48 EST 1999 Zdenek Radouch (radouch@cygnus.com)
* config/fr30/tm-fr30.h: Changed ABI to match GCC change
(always use pointer for structs passed by value).
1999-01-15 Fernando Nasser <fnasser@totem.to.cygnus.com>
* target.h: added entry for target queries (to_query)

15
gdb/config/fr30/tm-fr30.h
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@ -213,9 +213,20 @@ fr30_push_arguments PARAMS ((int nargs, struct value **args, CORE_ADDR sp,
#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
/* always pass struct by value as a pointer */
/* XXX Z.R. GCC does not do that today */
/* Fujitsu's ABI requires all structs to be passed using a pointer.
That is obviously not very efficient, so I am leaving the definitions
to make gdb work with GCC style struct passing, in case we decide
to go for better performance, rather than for compatibility with
Fujitsu (just change STRUCT_ALWAYS_BY_ADDR to 0) */
#define STRUCT_ALWAYS_BY_ADDR 1
#if(STRUCT_ALWAYS_BY_ADDR)
#define REG_STRUCT_HAS_ADDR(gcc_p,type) 1
#else
/* more standard GCC (optimized) */
#define REG_STRUCT_HAS_ADDR(gcc_p,type) \
((TYPE_LENGTH(type) > 4) && (TYPE_LENGTH(type) & 0x3))
#endif
/* alway return struct by value by input pointer */
#define USE_STRUCT_CONVENTION(GCC_P, TYPE) 1