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* mn10200-tdep.c (mn10200_push_arguments): Stack only needs to

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be two byte aligned.  Round argument sizes up to two byte boundary.
        Write out args in two byte hunks.
        (mn10200_push_return_address): Implement.
        * config/mn10200/tm-mn10200.h (EXTRACT_RETURN_VALUE): Abort for
        structures > 8 bytes (temporary).
        (STORE_RETURN_VALUE): Likewise.
        (CALL_DUMMY): No longer undefine.
        (USE_STRUCT_CONVENTION): Use for args > 8 bytes.
        (REG_STRUCT_HAS_ADDR): Define.
Inferior function calls for the mn10200.
This commit is contained in:
Jeff Law 1997-02-11 19:31:29 +00:00
parent f9114af581
commit 25de138b06
3 changed files with 30 additions and 12 deletions
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13
gdb/ChangeLog
View File

@ -1,3 +1,16 @@
Tue Feb 11 12:28:09 1997 Jeffrey A Law (law@cygnus.com)
* mn10200-tdep.c (mn10200_push_arguments): Stack only needs to
be two byte aligned. Round argument sizes up to two byte boundary.
Write out args in two byte hunks.
(mn10200_push_return_address): Implement.
* config/mn10200/tm-mn10200.h (EXTRACT_RETURN_VALUE): Abort for
structures > 8 bytes (temporary).
(STORE_RETURN_VALUE): Likewise.
(CALL_DUMMY): No longer undefine.
(USE_STRUCT_CONVENTION): Use for args > 8 bytes.
(REG_STRUCT_HAS_ADDR): Define.
start-sanitize-r5900
Fri Feb 07 09:04:37 1997 Gavin Koch <gavin@cygnus.com>

10
gdb/config/mn10200/tm-mn10200.h
View File

@ -122,7 +122,7 @@ extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *));
#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
{ \
if (TYPE_LENGTH (TYPE) > 4) \
if (TYPE_LENGTH (TYPE) > 8) \
abort (); \
else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \
{ \
@ -141,7 +141,7 @@ extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *));
#define STORE_RETURN_VALUE(TYPE, VALBUF) \
{ \
if (TYPE_LENGTH (TYPE) > 4) \
if (TYPE_LENGTH (TYPE) > 8) \
abort (); \
else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \
{ \
@ -171,7 +171,6 @@ extern void mn10200_pop_frame PARAMS ((struct frame_info *));
#define USE_GENERIC_DUMMY_FRAMES
#define CALL_DUMMY {0}
#undef CALL_DUMMY /* for now, no function calls */
#define CALL_DUMMY_START_OFFSET (0)
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
@ -191,8 +190,11 @@ mn10200_push_arguments PARAMS ((int, struct value **, CORE_ADDR,
#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
#define REG_STRUCT_HAS_ADDR(gcc_p,type) \
(TYPE_LENGTH (type) > 8)
#define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
(TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 4)
(TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 8)
/* Override the default get_saved_register function with
one that takes account of generic CALL_DUMMY frames. */

19
gdb/mn10200-tdep.c
View File

@ -530,15 +530,15 @@ mn10200_push_arguments (nargs, args, sp, struct_return, struct_addr)
int stack_offset = 0;
/* This should be a nop, but align the stack just in case something
went wrong. */
sp &= ~3;
went wrong. Stacks are two byte aligned on the mn10200. */
sp &= ~1;
/* Now make space on the stack for the args.
XXX This doesn't appear to handle pass-by-invisible reference
arguments. */
for (argnum = 0; argnum < nargs; argnum++)
len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3);
len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 1) & ~1);
/* Allocate stack space. */
sp -= len;
@ -567,11 +567,11 @@ mn10200_push_arguments (nargs, args, sp, struct_return, struct_addr)
while (len > 0)
{
/* XXX This looks wrong; we can have one and two byte args. */
write_memory (sp + stack_offset, val, 4);
write_memory (sp + stack_offset, val, 2);
len -= 4;
val += 4;
stack_offset += 4;
len -= 2;
val += 2;
stack_offset += 2;
}
args++;
}
@ -588,8 +588,11 @@ mn10200_push_return_address (pc, sp)
CORE_ADDR pc;
CORE_ADDR sp;
{
unsigned char buf[4];
return sp;
store_unsigned_integer (buf, 4, CALL_DUMMY_ADDRESS ());
write_memory (sp - 4, buf, 4);
return sp - 4;
}
/* Function: frame_saved_pc