#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcmd.h"
+#include "value.h"
#include "dis-asm.h"
#include "../opcodes/h8500-opc.h"
;
-#undef NUM_REGS
-#define NUM_REGS 11
#define UNSIGNED_SHORT(X) ((X) & 0xffff)
-
-/* Shape of an H8/500 frame :
+/* Shape of an H8/500 frame :
arg-n
*/
-#define IS_PUSH(x) ((x & 0xff00)==0x6d00)
+#define IS_PUSH(x) (((x) & 0xff00)==0x6d00)
#define IS_LINK_8(x) ((x) == 0x17)
#define IS_LINK_16(x) ((x) == 0x1f)
-#define IS_MOVE_FP(x) (x == 0x0d76)
-#define IS_MOV_SP_FP(x) (x == 0x0d76)
-#define IS_SUB2_SP(x) (x==0x1b87)
-#define IS_MOVK_R5(x) (x==0x7905)
-#define IS_SUB_R5SP(x) (x==0x1957)
+#define IS_MOVE_FP(x) ((x) == 0x0d76)
+#define IS_MOV_SP_FP(x) ((x) == 0x0d76)
+#define IS_SUB2_SP(x) ((x) == 0x1b87)
+#define IS_MOVK_R5(x) ((x) == 0x7905)
+#define IS_SUB_R5SP(x) ((x) == 0x1957)
#define LINK_8 0x17
#define LINK_16 0x1f
CORE_ADDR examine_prologue ();
void frame_find_saved_regs ();
+
+int regoff[NUM_REGS] =
+{0, 2, 4, 6, 8, 10, 12, 14, /* r0->r7 */
+ 16, 18, /* ccr, pc */
+ 20, 21, 22, 23}; /* cp, dp, ep, tp */
+
CORE_ADDR
h8500_skip_prologue (start_pc)
CORE_ADDR start_pc;
{
short int w;
-
w = read_memory_integer (start_pc, 1);
if (w == LINK_8)
- {
- start_pc ++;
- w = read_memory_integer (start_pc,1);
- }
-
- if (w == LINK_16)
- {
- start_pc +=2;
- w = read_memory_integer (start_pc,2);
- }
-
- /* Skip past a move to FP */
- if (IS_MOVE_FP (w))
{
start_pc += 2;
- w = read_memory_short (start_pc);
+ w = read_memory_integer (start_pc, 1);
}
- /* Skip the stack adjust */
-
- if (IS_MOVK_R5 (w))
- {
- start_pc += 2;
- w = read_memory_short (start_pc);
- }
- if (IS_SUB_R5SP (w))
- {
- start_pc += 2;
- w = read_memory_short (start_pc);
- }
- while (IS_SUB2_SP (w))
+ if (w == LINK_16)
{
- start_pc += 2;
- w = read_memory_short (start_pc);
+ start_pc += 3;
+ w = read_memory_integer (start_pc, 2);
}
return start_pc;
-
}
int
CORE_ADDR memaddr;
FILE *stream;
{
- /* Nothing is bigger than 8 bytes */
- char data[8];
disassemble_info info;
- read_memory (memaddr, data, sizeof (data));
- GDB_INIT_DISASSEMBLE_INFO(info, stream);
- return print_insn_h8500 (memaddr, data, &info);
+ GDB_INIT_DISASSEMBLE_INFO (info, stream);
+ return print_insn_h8500 (memaddr, &info);
}
/* Given a GDB frame, determine the address of the calling function's frame.
the function prologue to determine the caller's sp value, and return it. */
FRAME_ADDR
-FRAME_CHAIN (thisframe)
+h8500_frame_chain (thisframe)
FRAME thisframe;
{
- static int loopcount;
- static int prevr;
- if (!inside_entry_file ((thisframe)->pc))
- {
- int v = read_memory_integer ((thisframe)->frame, PTR_SIZE) ;
- /* Detect loops in the stack */
- if (v == prevr) loopcount++;
- else loopcount = 0;
- v = prevr;
- if (loopcount > 5) return 0;
- }
- return 0;
+ if (!inside_entry_file (thisframe->pc))
+ return (read_memory_integer (thisframe->frame, 2) & 0xffff)
+ | (read_register (SEG_T_REGNUM) << 16);
+ else
+ return 0;
}
/* Put here the code to store, into a struct frame_saved_regs,
cache_fsr = (struct frame_saved_regs *)
obstack_alloc (&frame_cache_obstack,
sizeof (struct frame_saved_regs));
- bzero (cache_fsr, sizeof (struct frame_saved_regs));
+ memset (cache_fsr, '\0', sizeof (struct frame_saved_regs));
fi->fsr = cache_fsr;
info about the registers saved by this frame.
`fi' is a struct frame_info pointer; we fill in various fields in it
to reflect the offsets of the arg pointer and the locals pointer. */
+
#if 0
static CORE_ADDR
examine_prologue (ip, limit, after_prolog_fp, fsr, fi)
return (ip);
}
-#endif
-#if 0
-void
-init_extra_frame_info (fromleaf, fi)
- int fromleaf;
- struct frame_info *fi;
-{
- fi->fsr = 0; /* Not yet allocated */
- fi->args_pointer = 0; /* Unknown */
- fi->locals_pointer = 0; /* Unknown */
- fi->from_pc = 0;
-}
#endif
/* Return the saved PC from this frame. */
frame_saved_pc (frame)
FRAME frame;
{
- return read_memory_integer ((frame)->frame + 2, PTR_SIZE);
+ return read_memory_integer ((frame)->frame + 2, PTR_SIZE);
}
CORE_ADDR
frame_args_address (fi)
struct frame_info *fi;
{
- return fi->frame + PTR_SIZE; /* Skip the PC */
+ return fi->frame;
}
void
}
}
-
-
-#if 0
-register_byte (N)
-{
- return reginfo[N].offset;
-}
-#endif
-register_raw_size (N)
-{
- if (N <= R7) return 2;
- return 4;
-}
-
-register_virtual_size (N)
-{
- if (N <= R7) return 2;
- return 4;
-}
-
-
-
-register_convert_to_raw (regnum, from, to)
- int regnum;
- char *from;
- char *to;
-{
- switch (regnum)
- {
- case PR0:
- case PR1:
- case PR2:
- case PR3:
- case PR4:
- case PR5:
- case PR6:
- case PR7:
- case PC_REGNUM:
- to[0] = 0;
- to[1] = from[1];
- to[2] = from[2];
- to[3] = from[3];
- break;
- default:
- to[0] = from[0];
- to[1] = from[1];
- break;
- }
-}
-
-
-register_convert_to_virtual (regnum, from, to)
- int regnum;
- char *from;
- char *to;
+int
+h8500_register_size (regno)
+ int regno;
{
- switch (regnum)
- {
- case PR0:
- case PR1:
- case PR2:
- case PR3:
- case PR4:
- case PR5:
- case PR6:
- case PR7:
- case PC_REGNUM:
- to[0] = 0;
- to[1] = from[1];
- to[2] = from[2];
- to[3] = from[3];
- break;
- default:
- to[0] = from[0];
- to[1] = from[1];
- break;
- }
+ if (regno <= PC_REGNUM)
+ return 2;
+ else
+ return 1;
}
struct type *
-register_virtual_type (N)
+h8500_register_virtual_type (regno)
+ int regno;
{
- switch (N)
+ switch (regno)
{
- /* Although these are actually word size registers, we treat them
- like longs so that we can deal with any implicit segmentation */
- case PR0:
- case PR1:
- case PR2:
- case PR3:
- case PR4:
- case PR5:
- case PR6:
- case PR7:
- case PC_REGNUM:
- return builtin_type_unsigned_long;
- case SEG_C:
- case SEG_E:
- case SEG_D:
- case SEG_T:
+ case SEG_C_REGNUM:
+ case SEG_E_REGNUM:
+ case SEG_D_REGNUM:
+ case SEG_T_REGNUM:
return builtin_type_unsigned_char;
- case R0:
- case R1:
- case R2:
- case R3:
- case R4:
- case R5:
- case R6:
- case R7:
+ case R0_REGNUM:
+ case R1_REGNUM:
+ case R2_REGNUM:
+ case R3_REGNUM:
+ case R4_REGNUM:
+ case R5_REGNUM:
+ case R6_REGNUM:
+ case R7_REGNUM:
+ case PC_REGNUM:
case CCR_REGNUM:
return builtin_type_unsigned_short;
-
-
default:
- abort();
+ abort ();
}
}
-
-
-
/* Put here the code to store, into a struct frame_saved_regs,
the addresses of the saved registers of frame described by FRAME_INFO.
This includes special registers such as pc and fp saved in special
register CORE_ADDR pc;
unsigned char thebyte;
- bzero (frame_saved_regs, sizeof *frame_saved_regs);
+ memset (frame_saved_regs, '\0', sizeof *frame_saved_regs);
if ((frame_info)->pc >= (frame_info)->frame - CALL_DUMMY_LENGTH - FP_REGNUM * 4 - 4
&& (frame_info)->pc <= (frame_info)->frame)
regs using the amount of storage from the link instruction.
*/
- thebyte = read_memory_integer(pc, 1);
+ thebyte = read_memory_integer (pc, 1);
if (0x1f == thebyte)
next_addr = (frame_info)->frame + read_memory_integer (pc += 1, 2), pc += 2;
else if (0x17 == thebyte)
else
goto lose;
#if 0
- fixme steve
- /* If have an add:g.waddal #-n, sp next, adjust next_addr. */
- if ((0x0c0177777 & read_memory_integer (pc, 2)) == 0157774)
- next_addr += read_memory_integer (pc += 2, 4), pc += 4;
+ /* FIXME steve */
+ /* If have an add:g.waddal #-n, sp next, adjust next_addr. */
+ if ((0x0c0177777 & read_memory_integer (pc, 2)) == 0157774)
+ next_addr += read_memory_integer (pc += 2, 4), pc += 4;
#endif
}
- thebyte = read_memory_integer(pc, 1);
- if (thebyte == 0x12) {
- /* Got stm */
- pc++;
- regmask = read_memory_integer(pc,1);
- pc++;
- for (regnum = 0; regnum < 8; regnum ++, regmask >>=1)
- {
- if (regmask & 1)
- {
- (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2;
- }
- }
- thebyte = read_memory_integer(pc, 1);
- }
+ thebyte = read_memory_integer (pc, 1);
+ if (thebyte == 0x12)
+ {
+ /* Got stm */
+ pc++;
+ regmask = read_memory_integer (pc, 1);
+ pc++;
+ for (regnum = 0; regnum < 8; regnum++, regmask >>= 1)
+ {
+ if (regmask & 1)
+ {
+ (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2;
+ }
+ }
+ thebyte = read_memory_integer (pc, 1);
+ }
/* Maybe got a load of pushes */
- while (thebyte == 0xbf) {
- pc++;
- regnum = read_memory_integer(pc,1) & 0x7;
- pc++;
- (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2;
- thebyte = read_memory_integer(pc, 1);
- }
-
- lose:;
-
+ while (thebyte == 0xbf)
+ {
+ pc++;
+ regnum = read_memory_integer (pc, 1) & 0x7;
+ pc++;
+ (frame_saved_regs)->regs[regnum] = (next_addr += 2) - 2;
+ thebyte = read_memory_integer (pc, 1);
+ }
+
+lose:;
+
/* Remember the address of the frame pointer */
(frame_saved_regs)->regs[FP_REGNUM] = (frame_info)->frame;
(frame_saved_regs)->regs[PC_REGNUM] = (frame_info)->frame + 2;
}
-saved_pc_after_call(frame)
+saved_pc_after_call (frame)
{
int x;
- int a = read_register(SP_REGNUM);
+ int a = read_register (SP_REGNUM);
x = read_memory_integer (a, PTR_SIZE);
return x;
}
/* Nonzero if instruction at PC is a return instruction. */
-about_to_return(pc)
+about_to_return (pc)
{
- int b1 = read_memory_integer(pc,1);
+ int b1 = read_memory_integer (pc, 1);
- switch (b1)
+ switch (b1)
{
case 0x14: /* rtd #8 */
case 0x1c: /* rtd #16 */
return 1;
case 0x11:
{
- int b2 = read_memory_integer(pc+1,1);
- switch (b2)
+ int b2 = read_memory_integer (pc + 1, 1);
+ switch (b2)
{
case 0x18: /* prts */
case 0x14: /* prtd #8 */
help_list (setmemorylist, "set memory ", -1, stdout);
}
+/* See if variable name is ppc or pr[0-7] */
-_initialize_h8500_tdep ()
+int
+h8500_is_trapped_internalvar (name)
+ char *name;
+{
+ if (name[0] != 'p')
+ return 0;
+
+ if (strcmp (name + 1, "pc") == 0)
+ return 1;
+
+ if (name[1] == 'r'
+ && name[2] >= '0'
+ && name[2] <= '7'
+ && name[3] == '\000')
+ return 1;
+ else
+ return 0;
+}
+
+value
+h8500_value_of_trapped_internalvar (var)
+ struct internalvar *var;
+{
+ LONGEST regval;
+ unsigned char regbuf[4];
+ int page_regnum, regnum;
+
+ regnum = var->name[2] == 'c' ? PC_REGNUM : var->name[2] - '0';
+
+ switch (var->name[2])
+ {
+ case 'c':
+ page_regnum = SEG_C_REGNUM;
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ page_regnum = SEG_D_REGNUM;
+ break;
+ case '4':
+ case '5':
+ page_regnum = SEG_E_REGNUM;
+ break;
+ case '6':
+ case '7':
+ page_regnum = SEG_T_REGNUM;
+ break;
+ }
+
+ get_saved_register (regbuf, NULL, NULL, selected_frame, page_regnum, NULL);
+ regval = regbuf[0] << 16;
+
+ get_saved_register (regbuf, NULL, NULL, selected_frame, regnum, NULL);
+ regval |= regbuf[0] << 8 | regbuf[1]; /* XXX host/target byte order */
+
+ free (var->value); /* Free up old value */
+
+ var->value = value_from_longest (builtin_type_unsigned_long, regval);
+ release_value (var->value); /* Unchain new value */
+
+ VALUE_LVAL (var->value) = lval_internalvar;
+ VALUE_INTERNALVAR (var->value) = var;
+ return var->value;
+}
+
+void
+h8500_set_trapped_internalvar (var, newval, bitpos, bitsize, offset)
+ struct internalvar *var;
+ int offset, bitpos, bitsize;
+ value newval;
{
- /* Sanitity check a few things */
- if (FP_REGNUM != GPR6
- || SP_REGNUM != GPR7
- || CCR_REGNUM != GCCR
- || PC_REGNUM != GPC
- || SEG_C != GSEGC
- || SEG_D != GSEGD
- || SEG_E != GSEGE
- || SEG_T != GSEGT
- || PR0 != GPR0
- || PR1 != GPR1
- || PR2 != GPR2
- || PR3 != GPR3
- || PR4 != GPR4
- || PR5 != GPR5
- || PR6 != GPR6
- || PR7 != GPR7)
- abort ();
+ char *page_regnum, *regnum;
+ char expression[100];
+ unsigned new_regval;
+ struct type *type;
+ enum type_code newval_type_code;
+
+ type = VALUE_TYPE (newval);
+ newval_type_code = TYPE_CODE (type);
+
+ if ((newval_type_code != TYPE_CODE_INT
+ && newval_type_code != TYPE_CODE_PTR)
+ || TYPE_LENGTH (type) != sizeof (new_regval))
+ error ("Illegal type (%s) for assignment to $%s\n",
+ TYPE_NAME (type), var->name);
+
+ new_regval = *(long *) VALUE_CONTENTS_RAW (newval);
+ regnum = var->name + 1;
+
+ switch (var->name[2])
+ {
+ case 'c':
+ page_regnum = "cp";
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ page_regnum = "dp";
+ break;
+ case '4':
+ case '5':
+ page_regnum = "ep";
+ break;
+ case '6':
+ case '7':
+ page_regnum = "tp";
+ break;
+ }
+
+ sprintf (expression, "$%s=%d", page_regnum, new_regval >> 16);
+ parse_and_eval (expression);
+
+ sprintf (expression, "$%s=%d", regnum, new_regval & 0xffff);
+ parse_and_eval (expression);
+}
+
+_initialize_h8500_tdep ()
+{
add_prefix_cmd ("memory", no_class, set_memory,
"set the memory model", &setmemorylist, "set memory ", 0,
&setlist);
"Set unsegmented memory model.", &setmemorylist);
}
+
+CORE_ADDR
+target_read_sp ()
+{
+ return (read_register (SEG_T_REGNUM) << 16) | (read_register (SP_REGNUM));
+}
+
+void
+target_write_sp (v)
+ CORE_ADDR v;
+{
+ write_register (SEG_T_REGNUM, v >> 16);
+ write_register (SP_REGNUM, v & 0xffff);
+}
+
+CORE_ADDR
+target_read_pc ()
+{
+ return (read_register (SEG_C_REGNUM) << 16) | (read_register (PC_REGNUM));
+}
+
+void
+target_write_pc (v)
+ CORE_ADDR v;
+{
+ write_register (SEG_C_REGNUM, v >> 16);
+ write_register (PC_REGNUM, v & 0xffff);
+}
+
+CORE_ADDR
+target_read_fp ()
+{
+ return (read_register (SEG_T_REGNUM) << 16) | (read_register (FP_REGNUM));
+}
+
+void
+target_write_fp (v)
+ CORE_ADDR v;
+{
+ write_register (SEG_T_REGNUM, v >> 16);
+ write_register (FP_REGNUM, v & 0xffff);
+}
projects / deliverable / binutils-gdb.git / blobdiff