#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
#define CALL_DUMMY_ADDRESS() entry_point_address ()
-extern CORE_ADDR fr30_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
-#define PUSH_RETURN_ADDRESS(PC, SP) fr30_push_return_address (PC, SP)
-
-
+#define PUSH_RETURN_ADDRESS(PC, SP) (write_register(RP_REGNUM, CALL_DUMMY_ADDRESS()), SP)
#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
-
/* Number of bytes at start of arglist that are not really args. */
#define FRAME_ARGS_SKIP 0
a function return value of type TYPE, and copy that, in virtual format,
into VALBUF. */
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- memcpy (VALBUF, REGBUF + REGISTER_BYTE(RETVAL_REG), TYPE_LENGTH (TYPE))
+ memcpy (VALBUF, REGBUF + REGISTER_BYTE(RETVAL_REG) + \
+ (TYPE_LENGTH(TYPE) < 4 ? 4 - TYPE_LENGTH(TYPE) : 0), TYPE_LENGTH (TYPE))
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
#define STORE_STRUCT_RETURN(ADDR, SP) \
{ write_register (RETVAL_REG, (ADDR)); }
-
-
#define FRAME_ARGS_ADDRESS(fi) (fi->frame)
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
/* Define this for Wingdb */
#define TARGET_FR30
-#if(1) /* Z.R. */
-
-/*ARM example*/
-
/* IEEE format floating point */
#define IEEE_FLOAT
(FRAMELESS) = (after_prologue == func_start); \
}
-/*V850 example*/
-
extern void fr30_init_extra_frame_info PARAMS ((struct frame_info *fi));
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) fr30_init_extra_frame_info (fi)
#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
-#define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
- (TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 4)
-
-#endif /* Z.R. */
+/* always pass struct by value as a pointer */
+/* XXX Z.R. GCC does not do that today */
+#define REG_STRUCT_HAS_ADDR(gcc_p,type) \
+ ((TYPE_LENGTH(type) > 4) && (TYPE_LENGTH(type) & 0x3))
+/* alway return struct by value by input pointer */
+#define USE_STRUCT_CONVENTION(GCC_P, TYPE) 1
/* Target-dependent code for the Fujitsu FR30.
- Copyright 1996, Free Software Foundation, Inc.
+ Copyright 1999, Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcore.h"
#include "symfile.h"
-__t(int l, char *s, int a)
-{
- fprintf(stderr, "(%d): %s: 0x%08x\n", l, s, a);
-}
-#define T(s, a) __t(__LINE__, s, (int)(a))
-
/* Function: pop_frame
This routine gets called when either the user uses the `return'
command, or the call dummy breakpoint gets hit. */
{
struct frame_info *frame = get_current_frame();
int regnum;
+ CORE_ADDR sp = read_register(SP_REGNUM);
if (PC_IN_CALL_DUMMY(frame->pc, frame->frame, frame->frame))
generic_pop_dummy_frame ();
write_register (PC_REGNUM, FRAME_SAVED_PC (frame));
for (regnum = 0; regnum < NUM_REGS; regnum++)
- if (frame->fsr.regs[regnum] != 0)
+ if (frame->fsr.regs[regnum] != 0) {
write_register (regnum,
read_memory_unsigned_integer (frame->fsr.regs[regnum],
REGISTER_RAW_SIZE(regnum)));
-
- write_register (SP_REGNUM, read_register (frame->framereg));
+ }
+ write_register (SP_REGNUM, sp + frame->framesize);
}
-
flush_cached_frames ();
}
}
+/* Function: push_arguments
+ Setup arguments and RP for a call to the target. First four args
+ go in FIRST_ARGREG -> LAST_ARGREG, subsequent args go on stack...
+ Structs are passed by reference. XXX not right now Z.R.
+ 64 bit quantities (doubles and long longs) may be split between
+ the regs and the stack.
+ When calling a function that returns a struct, a pointer to the struct
+ is passed in as a secret first argument (always in FIRST_ARGREG).
+
+ Stack space for the args has NOT been allocated: that job is up to us.
+*/
+
CORE_ADDR
fr30_push_arguments(nargs, args, sp, struct_return, struct_addr)
int nargs;
if (struct_return)
write_register (argreg++, struct_addr);
-#if(0)
- /* The offset onto the stack at which we will start copying parameters
- (after the registers are used up) begins at 16 in the old ABI.
- This leaves room for the "home" area for register parameters. */
- stack_offset = REGISTER_SIZE * 4;
-#else
-/* XXX which ABI are we using ? Z.R. */
stack_offset = 0;
-#endif
/* Process args from left to right. Store as many as allowed in
registers, save the rest to be pushed on the stack */
prologue_cache.framesize = fi->framesize;
prologue_cache.frameoffset = fi->frameoffset;
- for (i = 0; i <= NUM_REGS; i++)
+ for (i = 0; i <= NUM_REGS; i++) {
prologue_cache.fsr.regs[i] = fi->fsr.regs[i];
+ }
}
}
else
{
- T("NIY", 0);
- /* XXX ??? Z.R. Get address of the stmfd in the prologue of the callee; the saved
- PC is the address of the stmfd + 12. */
+ /* XXX Z.R. What now??? The following is entirely bogus */
prologue_start = (read_memory_integer (fi->frame, 4) & 0x03fffffc) - 12;
- prologue_end = prologue_start + 40; /* FIXME: should be big enough */
+ prologue_end = prologue_start + 40;
}
/* Now search the prologue looking for instructions that set up the
fi->fsr.regs[reg] = sp_offset;
}
}
+ else if((insn & 0xfff0) == 0x1700) /* st rx,@-r15 */
+ {
+ int reg = insn & 0xf;
+
+ sp_offset -= 4;
+ fi->fsr.regs[reg] = sp_offset;
+ }
else if((insn & 0xff00) == 0x0f00) /* enter */
{
fp_offset = fi->fsr.regs[FP_REGNUM] = sp_offset - 4;
if (fi->next->fsr.regs[fi->framereg] != 0)
fi->frame = read_memory_integer (fi->next->fsr.regs[fi->framereg],
4);
-
/* Calculate actual addresses of saved registers using offsets determined
by fr30_scan_prologue. */
for (reg = 0; reg < NUM_REGS; reg++)
- if (fi->fsr.regs[reg] != 0)
+ if (fi->fsr.regs[reg] != 0) {
fi->fsr.regs[reg] += fi->frame + fi->framesize - fi->frameoffset;
+ }
}
/* Function: find_callers_reg
return fi->frame + fi->framesize;
}
-/* Function: push_arguments
- Setup arguments and RP for a call to the target. First four args
- go in R4->R7, subsequent args go on stack... Structs
- are passed by reference. 64 bit quantities (doubles and long
- longs) may be split between the regs and the stack. When calling a
- function that returns a struct, a pointer to the struct is passed
- in as a secret first argument (always in R6).
-
- Stack space for the args has NOT been allocated: that job is up to us.
- */
-
-#if(0) /* Z.R. XXX */
-CORE_ADDR
-fr30_push_arguments (nargs, args, sp, struct_return, struct_addr)
- int nargs;
- value_ptr *args;
- CORE_ADDR sp;
- unsigned char struct_return;
- CORE_ADDR struct_addr;
-{
- int argreg;
- int argnum;
- int len = 0;
- int stack_offset;
-
- /* First, just for safety, make sure stack is aligned */
- sp &= ~3;
-
- /* Now make space on the stack for the args. */
- for (argnum = 0; argnum < nargs; argnum++)
- len += ((TYPE_LENGTH(VALUE_TYPE(args[argnum])) + 3) & ~3);
- sp -= len; /* possibly over-allocating, but it works... */
- /* (you might think we could allocate 16 bytes */
- /* less, but the ABI seems to use it all! ) */
- argreg = ARG0_REGNUM;
-
- /* the struct_return pointer occupies the first parameter-passing reg */
- if (struct_return)
- write_register (argreg++, struct_addr);
-
- stack_offset = 16;
- /* The offset onto the stack at which we will start copying parameters
- (after the registers are used up) begins at 16 rather than at zero.
- I don't really know why, that's just the way it seems to work. */
-
- /* Now load as many as possible of the first arguments into
- registers, and push the rest onto the stack. There are 16 bytes
- in four registers available. Loop thru args from first to last. */
- for (argnum = 0; argnum < nargs; argnum++)
- {
- int len;
- char *val;
- char valbuf[REGISTER_RAW_SIZE(ARG0_REGNUM)];
-
- if (TYPE_CODE (VALUE_TYPE (*args)) == TYPE_CODE_STRUCT
- && TYPE_LENGTH (VALUE_TYPE (*args)) > 8)
- {
- store_address (valbuf, 4, VALUE_ADDRESS (*args));
- len = 4;
- val = valbuf;
- }
- else
- {
- len = TYPE_LENGTH (VALUE_TYPE (*args));
- val = (char *)VALUE_CONTENTS (*args);
- }
-
- while (len > 0)
- if (argreg <= ARGLAST_REGNUM)
- {
- CORE_ADDR regval;
-
- regval = extract_address (val, REGISTER_RAW_SIZE (argreg));
- write_register (argreg, regval);
-
- len -= REGISTER_RAW_SIZE (argreg);
- val += REGISTER_RAW_SIZE (argreg);
- argreg++;
- }
- else
- {
- write_memory (sp + stack_offset, val, 4);
-
- len -= 4;
- val += 4;
- stack_offset += 4;
- }
- args++;
- }
- return sp;
-}
-#endif /* Z.R. */
-
-/* Function: push_return_address (pc)
- Set up the return address for the inferior function call.
- Needed for targets where we don't actually execute a JSR/BSR instruction */
-
-CORE_ADDR
-fr30_push_return_address (pc, sp)
- CORE_ADDR pc;
- CORE_ADDR sp;
-{
- write_register (RP_REGNUM, CALL_DUMMY_ADDRESS ());
- return sp;
-}
-
/* Function: frame_saved_pc
Find the caller of this frame. We do this by seeing if RP_REGNUM
is saved in the stack anywhere, otherwise we get it from the
return fr30_find_callers_reg (fi, RP_REGNUM);
}
-#if(0) /* Z.R. XXX */
-void
-get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
- char *raw_buffer;
- int *optimized;
- CORE_ADDR *addrp;
- struct frame_info *frame;
- int regnum;
- enum lval_type *lval;
-{
- generic_get_saved_register (raw_buffer, optimized, addrp,
- frame, regnum, lval);
-}
-#endif /* Z.R. */
-
-
/* Function: fix_call_dummy
Pokes the callee function's address into the CALL_DUMMY assembly stub.
Assumes that the CALL_DUMMY looks like this:
store_unsigned_integer ((unsigned int *)&dummy[0], 2, offset24 >> 16);
return 0;
}
-
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