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Diffstat (limited to 'gdb/d10v-tdep.c')
-rw-r--r--gdb/d10v-tdep.c157
1 files changed, 99 insertions, 58 deletions
diff --git a/gdb/d10v-tdep.c b/gdb/d10v-tdep.c
index b25e7e8..7e3d0d6 100644
--- a/gdb/d10v-tdep.c
+++ b/gdb/d10v-tdep.c
@@ -30,6 +30,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "objfiles.h"
void d10v_frame_find_saved_regs PARAMS ((struct frame_info *fi, struct frame_saved_regs *fsr));
+static void d10v_pop_dummy_frame PARAMS ((struct frame_info *fi));
/* Discard from the stack the innermost frame,
restoring all saved registers. */
@@ -44,6 +45,13 @@ d10v_pop_frame ()
char raw_buffer[8];
fp = FRAME_FP (frame);
+ printf("pop_frame %x\n",(int)fp);
+ if (frame->dummy)
+ {
+ d10v_pop_dummy_frame(frame);
+ return;
+ }
+
/* fill out fsr with the address of where each */
/* register was stored in the frame */
get_frame_saved_regs (frame, &fsr);
@@ -143,7 +151,7 @@ d10v_skip_prologue (pc)
}
return pc;
}
-
+
/* Given a GDB frame, determine the address of the calling function's frame.
This will be used to create a new GDB frame struct, and then
INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
@@ -162,9 +170,9 @@ d10v_frame_chain (frame)
if (!fsr.regs[FP_REGNUM])
{
- return (CORE_ADDR)fsr.regs[SP_REGNUM];
+ return (CORE_ADDR)fsr.regs[SP_REGNUM]+0x2000000;
}
- return read_memory_unsigned_integer(fsr.regs[FP_REGNUM],2);
+ return read_memory_unsigned_integer(fsr.regs[FP_REGNUM],2)+0x2000000;
}
static int next_addr;
@@ -305,9 +313,9 @@ d10v_frame_find_saved_regs (fi, fsr)
}
if (fsr->regs[13])
- fi->return_pc = (read_memory_unsigned_integer(fsr->regs[13],2)-1) << 2;
+ fi->return_pc = ((read_memory_unsigned_integer(fsr->regs[13],2)-1) << 2) + 0x1000000;
else
- fi->return_pc = (read_register(13) - 1) << 2;
+ fi->return_pc = ((read_register(13) - 1) << 2) + 0x1000000;
/* th SP is not normally (ever?) saved, but check anyway */
if (!fsr->regs[SP_REGNUM])
@@ -331,12 +339,19 @@ d10v_init_extra_frame_info (fromleaf, fi)
if (fi->next && (fi->pc == 0))
fi->pc = fi->next->return_pc;
+ /*
+ printf("init_extra_frame_info: fi->pc=%x frame=%x PC=%x SP=%x\n",
+ (int)fi->pc,(int)fi->frame,(int)read_register(PC_REGNUM)<<2,(int)read_register(SP_REGNUM));
+ */
+
d10v_frame_find_saved_regs (fi, &dummy);
if (!dummy.regs[FP_REGNUM])
{
- fi->frame = dummy.regs[SP_REGNUM] - fi->size;
+ /* printf("init_extra_frame_info: sp=%x size=%x\n",dummy.regs[SP_REGNUM],fi->size);; */
+ fi->frame = dummy.regs[SP_REGNUM] - fi->size + 0x2000000;
d10v_frame_find_saved_regs (fi, &dummy);
- }
+ }
+ /* printf("init_extra_frame_info end: pc=%x frame=%x\n",(int)fi->pc,(int)fi->frame); */
}
static void
@@ -369,6 +384,10 @@ show_regs (args, from_tty)
read_register (13),
read_register (14),
read_register (15));
+ printf_filtered ("IMAP0 %04x IMAP1 %04x DMAP %04x\n",
+ read_register (IMAP0_REGNUM),
+ read_register (IMAP1_REGNUM),
+ read_register (DMAP_REGNUM));
read_register_gen (A0_REGNUM, (char *)&num1);
read_register_gen (A0_REGNUM+1, (char *)&num2);
printf_filtered ("A0-A1 %010llx %010llx\n",num1, num2);
@@ -381,45 +400,61 @@ _initialize_d10v_tdep ()
add_com ("regs", class_vars, show_regs, "Print all registers");
}
-CORE_ADDR
-d10v_read_register_pid (regno, pid)
- int regno, pid;
+static CORE_ADDR
+d10v_xlate_addr (addr)
+ int addr;
{
- int save_pid;
- CORE_ADDR retval;
+ int imap;
+
+ if (addr < 0x20000)
+ imap = (int)read_register(IMAP0_REGNUM);
+ else
+ imap = (int)read_register(IMAP1_REGNUM);
- if (pid == inferior_pid)
- return (read_register(regno)) << 2;
+ if (imap & 0x1000)
+ return (CORE_ADDR)(addr + 0x1000000);
+ return (CORE_ADDR)(addr + (imap & 0xff)*0x20000);
+}
+
+
+CORE_ADDR
+d10v_read_pc (pid)
+ int pid;
+{
+ int save_pid, retval;
save_pid = inferior_pid;
inferior_pid = pid;
- retval = read_register (regno);
+ retval = (int)read_register (PC_REGNUM);
inferior_pid = save_pid;
- return (retval << 2);
+ return d10v_xlate_addr(retval << 2);
}
void
-d10v_write_register_pid (regno, val, pid)
- int regno;
+d10v_write_pc (val, pid)
LONGEST val;
int pid;
{
int save_pid;
- val >>= 2;
-
- if (pid == inferior_pid)
- {
- write_register (regno, val);
- return;
- }
-
save_pid = inferior_pid;
inferior_pid = pid;
- write_register (regno, val);
+ write_register (PC_REGNUM, (val & 0x3ffff) >> 2);
inferior_pid = save_pid;
}
+CORE_ADDR
+d10v_read_fp ()
+{
+ return (read_register(FP_REGNUM) + 0x2000000);
+}
+
+void
+d10v_write_fp (val)
+ LONGEST val;
+{
+ write_register (FP_REGNUM, val & 0xffff);
+}
void
d10v_fix_call_dummy (dummyname, start_sp, fun, nargs, args, type, gcc_p)
@@ -434,7 +469,9 @@ d10v_fix_call_dummy (dummyname, start_sp, fun, nargs, args, type, gcc_p)
int regnum, i;
CORE_ADDR sp;
char buffer[MAX_REGISTER_RAW_SIZE];
-
+ struct frame_info *frame = get_current_frame ();
+ frame->dummy = 1;
+ printf("D10v_fix_call_dummy: %x %x %d frame=%x\n",(int)start_sp,(int)fun,nargs,(int)frame->frame);
sp = start_sp;
for (regnum = 0; regnum < NUM_REGS-1; regnum++)
{
@@ -443,13 +480,28 @@ d10v_fix_call_dummy (dummyname, start_sp, fun, nargs, args, type, gcc_p)
sp -= REGISTER_RAW_SIZE(regnum);
}
write_register (SP_REGNUM, (LONGEST)sp);
- /* now we need to load PC with the return address */
- write_register (PC_REGNUM, (LONGEST)d10v_call_dummy_address()>>2);
+ printf("writing %x to sp\n",(int)sp);
+ /* now we need to load LR with the return address */
write_register (LR_REGNUM, (LONGEST)d10v_call_dummy_address()>>2);
- target_store_registers (-1);
- flush_cached_frames ();
}
+static void
+d10v_pop_dummy_frame (fi)
+ struct frame_info *fi;
+{
+ printf("pop_dummy_frame: start_sp=%x\n",(int)fi->frame);
+ /*
+ sp = start_sp;
+ for (regnum = 0; regnum < NUM_REGS-1; regnum++)
+ {
+ store_address (buffer, REGISTER_RAW_SIZE(regnum), read_register(regnum));
+ write_memory (sp, buffer, REGISTER_RAW_SIZE(regnum));
+ sp -= REGISTER_RAW_SIZE(regnum);
+ }
+ */
+}
+
+
CORE_ADDR
d10v_push_arguments (nargs, args, sp, struct_return, struct_addr)
int nargs;
@@ -460,13 +512,14 @@ d10v_push_arguments (nargs, args, sp, struct_return, struct_addr)
{
int i, len, regnum=2;
char *contents;
-
+ LONGEST val;
+
for (i = 0; i < nargs; i++)
{
value_ptr arg = args[i];
struct type *arg_type = check_typedef (VALUE_TYPE (arg));
switch (TYPE_CODE (arg_type))
- {
+ {
case TYPE_CODE_INT:
case TYPE_CODE_BOOL:
case TYPE_CODE_CHAR:
@@ -478,46 +531,32 @@ d10v_push_arguments (nargs, args, sp, struct_return, struct_addr)
}
len = TYPE_LENGTH (arg_type);
contents = VALUE_CONTENTS(arg);
- switch (len)
- {
- case 1:
- write_register (regnum++, (LONGEST)(*contents));
- break;
- case 2:
- write_register (regnum++, (LONGEST)(*(short *)contents));
- break;
- case 4:
- {
- LONGEST val = *(long *)contents;
- write_register (regnum++, val >> 16 );
- write_register (regnum++, val & 0xFFFF );
- }
- break;
- default:
- }
+ val = extract_signed_integer (contents, len);
+ printf("arg %d: len=%d contents=%x\n",i,len,(int)val);
+ if (len == 4)
+ write_register (regnum++, val>>16);
+ write_register (regnum++, val & 0xffff);
}
}
+
CORE_ADDR
d10v_call_dummy_address ()
{
- CORE_ADDR entry, retval;
+ CORE_ADDR entry;
struct minimal_symbol *sym;
entry = entry_point_address ();
if (entry != 0)
- {
- return entry;
- }
+ return entry;
sym = lookup_minimal_symbol ("_start", NULL, symfile_objfile);
if (!sym || MSYMBOL_TYPE (sym) != mst_text)
- retval = 0;
+ return 0;
else
- retval = SYMBOL_VALUE_ADDRESS (sym);
- return retval;
+ return SYMBOL_VALUE_ADDRESS (sym);
}
/* Given a return value in `regbuf' with a type `valtype',
@@ -529,5 +568,7 @@ d10v_extract_return_value (valtype, regbuf, valbuf)
char regbuf[REGISTER_BYTES];
char *valbuf;
{
+ printf("EXTRACT: regbuf=%x, *regbuf=%x %x %x %x len=%d %d\n",(int)regbuf,*(int *)regbuf,
+ *(int *)(regbuf+4),*(int *)(regbuf+8),*(int *)(regbuf+12),TYPE_LENGTH (valtype),REGISTER_BYTE (2) );
memcpy (valbuf, regbuf + REGISTER_BYTE (2), TYPE_LENGTH (valtype));
}
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