Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "tm.h"
#include "frame.h"
#include "inferior.h"
#include "symtab.h"
continue;
} else if (((op & 0xfc1f0000) == 0xbc010000) || /* stm Rx, NUM(r1) */
- ((op & 0xfc1f0000) == 0x90010000 && /* st rx,NUM(r1), rx >= r13 */
+ ((op & 0xfc1f0000) == 0x90010000 && /* st rx,NUM(r1),
+ rx >= r13 */
(op & 0x03e00000) >= 0x01a00000)) {
reg = GET_SRC_REG (op);
}
continue;
- } else if ((op & 0xffff0000) == 0x3c000000) { /* addis 0,0,NUM, used for >= 32k frames */
+ } else if ((op & 0xffff0000) == 0x3c000000) { /* addis 0,0,NUM, used
+ for >= 32k frames */
fdata->offset = (op & 0x0000ffff) << 16;
fdata->frameless = 0;
continue;
- } else if ((op & 0xffff0000) == 0x60000000) { /* ori 0,0,NUM, 2nd half of >= 32k frames */
+ } else if ((op & 0xffff0000) == 0x60000000) { /* ori 0,0,NUM, 2nd ha
+ lf of >= 32k frames */
fdata->offset |= (op & 0x0000ffff);
fdata->frameless = 0;
continue;
- } else if ((op & 0xffff0000) == lr_reg) { /* st Rx,NUM(r1) where Rx == lr */
+ } else if ((op & 0xffff0000) == lr_reg) { /* st Rx,NUM(r1)
+ where Rx == lr */
fdata->lr_offset = SIGNED_SHORT (op) + offset;
fdata->nosavedpc = 0;
lr_reg = 0;
continue;
- } else if ((op & 0xffff0000) == cr_reg) { /* st Rx,NUM(r1) where Rx == cr */
+ } else if ((op & 0xffff0000) == cr_reg) { /* st Rx,NUM(r1)
+ where Rx == cr */
fdata->cr_offset = SIGNED_SHORT (op) + offset;
cr_reg = 0;
continue;
- } else if (op == 0x48000005) { /* bl .+4 used in -mrelocatable */
+ } else if (op == 0x48000005) { /* bl .+4 used in
+ -mrelocatable */
continue;
} else if (op == 0x48000004) { /* b .+4 (xlc) */
break;
- } else if (((op & 0xffff0000) == 0x801e0000 || /* lwz 0,NUM(r30), used in V.4 -mrelocatable */
- op == 0x7fc0f214) && /* add r30,r0,r30, used in V.4 -mrelocatable */
+ } else if (((op & 0xffff0000) == 0x801e0000 || /* lwz 0,NUM(r30), used
+ in V.4 -mrelocatable */
+ op == 0x7fc0f214) && /* add r30,r0,r30, used
+ in V.4 -mrelocatable */
lr_reg == 0x901e0000) {
continue;
- } else if ((op & 0xffff0000) == 0x3fc00000 || /* addis 30,0,foo@ha, used in V.4 -mminimal-toc */
+ } else if ((op & 0xffff0000) == 0x3fc00000 || /* addis 30,0,foo@ha, used
+ in V.4 -mminimal-toc */
(op & 0xffff0000) == 0x3bde0000) { /* addi 30,30,foo@l */
continue;
- } else if ((op & 0xfc000000) == 0x48000000) { /* bl foo, to save fprs??? */
+ } else if ((op & 0xfc000000) == 0x48000000) { /* bl foo,
+ to save fprs??? */
fdata->frameless = 0;
/* Don't skip over the subroutine call if it is not within the first
prologue. */
if (op == 0x4def7b82 || op == 0) /* crorc 15, 15, 15 */
- break; /* don't skip over this branch */
-
+ break; /* don't skip over
+ this branch */
continue;
/* update stack pointer */
pc = read_register(PC_REGNUM);
store_address (pc_targ, 4, pc);
- (void) skip_prologue (get_pc_function_start (pc) + FUNCTION_START_OFFSET, &fdata);
+ skip_prologue (get_pc_function_start (pc) + FUNCTION_START_OFFSET, &fdata);
dummy_frame_addr [dummy_frame_count++] = sp;
for (ii=1; ii <= (LAST_SP_REGNUM-FIRST_SP_REGNUM+1); ++ii) {
write_memory (sp-384-(ii*4),
- ®isters[REGISTER_BYTE (FPLAST_REGNUM + ii)], 4);
+ ®isters[REGISTER_BYTE (FPLAST_REGNUM + ii)], 4);
}
/* Save sp or so called back chain right here. */
order to secure astack space. Thus, saved %sp (or %r1) value, is not the
one we should restore. Change it with the one we need. */
- *(int*)®isters [REGISTER_BYTE(FP_REGNUM)] = sp;
+ memcpy (®isters [REGISTER_BYTE(FP_REGNUM)], (char *) &sp, sizeof (int));
/* Now we can restore all registers. */
pc = read_pc ();
sp = FRAME_FP (frame);
- if (stop_stack_dummy && dummy_frame_count) {
- pop_dummy_frame ();
- return;
- }
+ if (stop_stack_dummy)
+ {
+#ifdef USE_GENERIC_DUMMY_FRAMES
+ generic_pop_dummy_frame ();
+ flush_cached_frames ();
+ return;
+#else
+ if (dummy_frame_count)
+ pop_dummy_frame ();
+ return;
+#endif
+ }
/* Make sure that all registers are valid. */
read_register_bytes (0, NULL, REGISTER_BYTES);
int argbytes; /* current argument byte */
char tmp_buffer [50];
int f_argno = 0; /* current floating point argno */
+
value_ptr arg = 0;
struct type *type;
CORE_ADDR saved_sp;
+#ifndef USE_GENERIC_DUMMY_FRAMES
if ( dummy_frame_count <= 0)
printf_unfiltered ("FATAL ERROR -push_arguments()! frame not found!!\n");
+#endif /* GENERIC_DUMMY_FRAMES */
/* The first eight words of ther arguments are passed in registers. Copy
them appropriately.
ii = struct_return ? 1 : 0;
+/*
+effectively indirect call... gcc does...
+
+return_val example( float, int);
+
+eabi:
+ float in fp0, int in r3
+ offset of stack on overflow 8/16
+ for varargs, must go by type.
+power open:
+ float in r3&r4, int in r5
+ offset of stack on overflow different
+both:
+ return in r3 or f0. If no float, must study how gcc emulates floats;
+ pay attention to arg promotion.
+ User may have to cast\args to handle promotion correctly
+ since gdb won't know if prototype supplied or not.
+*/
+
for (argno=0, argbytes=0; argno < nargs && ii<8; ++ii) {
arg = args[argno];
printf_unfiltered (
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
- memcpy (®isters[REGISTER_BYTE(FP0_REGNUM + 1 + f_argno)], VALUE_CONTENTS (arg),
- len);
+ memcpy (®isters[REGISTER_BYTE(FP0_REGNUM + 1 + f_argno)],
+ VALUE_CONTENTS (arg),
+ len);
++f_argno;
}
/* Argument takes more than one register. */
while (argbytes < len) {
-
- *(int*)®isters[REGISTER_BYTE(ii+3)] = 0;
+ memset (®isters[REGISTER_BYTE(ii+3)], 0, sizeof(int));
memcpy (®isters[REGISTER_BYTE(ii+3)],
- ((char*)VALUE_CONTENTS (arg))+argbytes,
- (len - argbytes) > 4 ? 4 : len - argbytes);
+ ((char*)VALUE_CONTENTS (arg))+argbytes,
+ (len - argbytes) > 4 ? 4 : len - argbytes);
++ii, argbytes += 4;
if (ii >= 8)
--ii;
}
else { /* Argument can fit in one register. No problem. */
- *(int*)®isters[REGISTER_BYTE(ii+3)] = 0;
+ memset (®isters[REGISTER_BYTE(ii+3)], 0, sizeof(int));
memcpy (®isters[REGISTER_BYTE(ii+3)], VALUE_CONTENTS (arg), len);
}
++argno;
ran_out_of_registers_for_arguments:
+#ifdef USE_GENERIC_DUMMY_FRAMES
+ saved_sp = read_sp ();
+#else
/* location for 8 parameters are always reserved. */
sp -= 4 * 8;
/* another six words for back chain, TOC register, link register, etc. */
sp -= 24;
-
+#endif /* GENERIC_DUMMY_FRAMES */
/* if there are more arguments, allocate space for them in
the stack, then push them starting from the ninth one. */
completely, push the rest of it into stack. */
if (argbytes) {
- write_memory (
- sp+24+(ii*4), ((char*)VALUE_CONTENTS (arg))+argbytes, len - argbytes);
+ write_memory (sp+24+(ii*4),
+ ((char*)VALUE_CONTENTS (arg))+argbytes,
+ len - argbytes);
++argno;
ii += ((len - argbytes + 3) & -4) / 4;
}
printf_unfiltered (
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
- memcpy (®isters[REGISTER_BYTE(FP0_REGNUM + 1 + f_argno)], VALUE_CONTENTS (arg),
- len);
+ memcpy (®isters[REGISTER_BYTE(FP0_REGNUM + 1 + f_argno)],
+ VALUE_CONTENTS (arg),
+ len);
++f_argno;
}
/* Secure stack areas first, before doing anything else. */
write_register (SP_REGNUM, sp);
+#ifndef USE_GENERIC_DUMMY_FRAMES
+/* we want to copy 24 bytes of target's frame to dummy's frame,
+ then set back chain to point to new frame. */
+
saved_sp = dummy_frame_addr [dummy_frame_count - 1];
read_memory (saved_sp, tmp_buffer, 24);
write_memory (sp, tmp_buffer, 24);
+#endif /* GENERIC_DUMMY_FRAMES */
/* set back chain properly */
store_address (tmp_buffer, 4, saved_sp);
target_store_registers (-1);
return sp;
}
+#ifdef ELF_OBJECT_FORMAT
+
+/* Function: ppc_push_return_address (pc, sp)
+ Set up the return address for the inferior function call. */
+
+CORE_ADDR
+ppc_push_return_address (pc, sp)
+ CORE_ADDR pc;
+ CORE_ADDR sp;
+{
+ write_register (LR_REGNUM, CALL_DUMMY_ADDRESS ());
+ return sp;
+}
+
+#endif
/* a given return value in `regbuf' with a type `valtype', extract and copy its
value into `valbuf' */
necessary. */
if (TYPE_LENGTH (valtype) > 4) /* this is a double */
- memcpy (valbuf, ®buf[REGISTER_BYTE (FP0_REGNUM + 1)],
- TYPE_LENGTH (valtype));
+ memcpy (valbuf,
+ ®buf[REGISTER_BYTE (FP0_REGNUM + 1)],
+ TYPE_LENGTH (valtype));
else { /* float */
memcpy (&dd, ®buf[REGISTER_BYTE (FP0_REGNUM + 1)], 8);
ff = (float)dd;
&& TYPE_LENGTH (valtype) < REGISTER_RAW_SIZE (3))
offset = REGISTER_RAW_SIZE (3) - TYPE_LENGTH (valtype);
- memcpy (valbuf, regbuf + REGISTER_BYTE (3) + offset,
+ memcpy (valbuf,
+ regbuf + REGISTER_BYTE (3) + offset,
TYPE_LENGTH (valtype));
}
}
if (fi->signal_handler_caller)
return read_memory_integer (fi->frame + SIG_FRAME_PC_OFFSET, 4);
+#ifdef USE_GENERIC_DUMMY_FRAMES
+ if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
+ return generic_read_register_dummy(fi->pc, fi->frame, PC_REGNUM);
+#endif /* GENERIC_DUMMY_FRAMES */
+
func_start = get_pc_function_start (fi->pc) + FUNCTION_START_OFFSET;
/* If we failed to find the start of the function, it is a mistake
struct frame_info *thisframe;
{
CORE_ADDR fp;
- if (inside_entry_file ((thisframe)->pc))
+
+#ifdef USE_GENERIC_DUMMY_FRAMES
+ if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame))
+ return thisframe->frame; /* dummy frame same as caller's frame */
+#endif /* GENERIC_DUMMY_FRAMES */
+
+ if (inside_entry_file (thisframe->pc) ||
+ thisframe->pc == entry_point_address ())
return 0;
+
if (thisframe->signal_handler_caller)
fp = read_memory_integer (thisframe->frame + SIG_FRAME_FP_OFFSET, 4);
else if (thisframe->next != NULL
else
fp = read_memory_integer ((thisframe)->frame, 4);
+#ifdef USE_GENERIC_DUMMY_FRAMES
+ {
+ CORE_ADDR fpp, lr;
+
+ lr = read_register (LR_REGNUM);
+ if (lr == entry_point_address ())
+ if (fp != 0 && (fpp = read_memory_integer (fp, 4)) != 0)
+ if (PC_IN_CALL_DUMMY (lr, fpp, fpp))
+ return fpp;
+ }
+#endif /* GENERIC_DUMMY_FRAMES */
return fp;
}
\f
}
#endif
+/* Function: get_saved_register
+ Just call the generic_get_saved_register function. */
+
+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);
+}
+
+
void
_initialize_rs6000_tdep ()
{