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This commit is contained in:
Jim Kingdon
1993-03-30 15:59:01 +00:00
parent c0f1bbb6d0
commit 0791c5ea6c
1 changed files with 149 additions and 47 deletions
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196
gdb/findvar.c
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@@ -171,8 +171,7 @@ read_relative_register_raw_bytes (regnum, myaddr)
int optim;
if (regnum == FP_REGNUM && selected_frame)
{
(void) memcpy (myaddr, &FRAME_FP(selected_frame),
REGISTER_RAW_SIZE(FP_REGNUM));
memcpy (myaddr, &FRAME_FP(selected_frame), REGISTER_RAW_SIZE(FP_REGNUM));
SWAP_TARGET_AND_HOST (myaddr, REGISTER_RAW_SIZE(FP_REGNUM)); /* in target order */
return 0;
}
@@ -200,10 +199,10 @@ value_of_register (regnum)
get_saved_register (raw_buffer, &optim, &addr,
selected_frame, regnum, &lval);
target_convert_to_virtual (regnum, raw_buffer, virtual_buffer);
REGISTER_CONVERT_TO_VIRTUAL (regnum, raw_buffer, virtual_buffer);
val = allocate_value (REGISTER_VIRTUAL_TYPE (regnum));
(void) memcpy (VALUE_CONTENTS_RAW (val), virtual_buffer,
REGISTER_VIRTUAL_SIZE (regnum));
memcpy (VALUE_CONTENTS_RAW (val), virtual_buffer,
REGISTER_VIRTUAL_SIZE (regnum));
VALUE_LVAL (val) = lval;
VALUE_ADDRESS (val) = addr;
VALUE_REGNO (val) = regnum;
@@ -263,7 +262,7 @@ read_register_bytes (regbyte, myaddr, len)
break;
}
if (myaddr != NULL)
(void) memcpy (myaddr, &registers[regbyte], len);
memcpy (myaddr, &registers[regbyte], len);
}
/* Read register REGNO into memory at MYADDR, which must be large enough
@@ -277,8 +276,8 @@ read_register_gen (regno, myaddr)
{
if (!register_valid[regno])
target_fetch_registers (regno);
(void) memcpy (myaddr, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
memcpy (myaddr, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
/* Copy LEN bytes of consecutive data from memory at MYADDR
@@ -292,7 +291,7 @@ write_register_bytes (regbyte, myaddr, len)
{
/* Make sure the entire registers array is valid. */
read_register_bytes (0, (char *)NULL, REGISTER_BYTES);
(void) memcpy (&registers[regbyte], myaddr, len);
memcpy (&registers[regbyte], myaddr, len);
target_store_registers (-1);
}
@@ -304,13 +303,28 @@ CORE_ADDR
read_register (regno)
int regno;
{
REGISTER_TYPE reg;
unsigned short sval;
unsigned long lval;
if (!register_valid[regno])
target_fetch_registers (regno);
memcpy (&reg, &registers[REGISTER_BYTE (regno)], sizeof (REGISTER_TYPE));
SWAP_TARGET_AND_HOST (&reg, sizeof (REGISTER_TYPE));
return reg;
switch (REGISTER_RAW_SIZE(regno))
{
case sizeof (unsigned char):
return registers[REGISTER_BYTE (regno)];
case sizeof (sval):
memcpy (&sval, &registers[REGISTER_BYTE (regno)], sizeof (sval));
SWAP_TARGET_AND_HOST (&sval, sizeof (sval));
return sval;
case sizeof (lval):
memcpy (&lval, &registers[REGISTER_BYTE (regno)], sizeof (lval));
SWAP_TARGET_AND_HOST (&lval, sizeof (lval));
return lval;
default:
error ("Can't handle register size of %d for register %d\n",
REGISTER_RAW_SIZE(regno), regno);
}
}
/* Registers we shouldn't try to store. */
@@ -326,20 +340,34 @@ void
write_register (regno, val)
int regno, val;
{
REGISTER_TYPE reg;
unsigned short sval;
unsigned long lval;
/* On the sparc, writing %g0 is a no-op, so we don't even want to change
the registers array if something writes to this register. */
if (CANNOT_STORE_REGISTER (regno))
return;
reg = val;
SWAP_TARGET_AND_HOST (&reg, sizeof (REGISTER_TYPE));
target_prepare_to_store ();
register_valid [regno] = 1;
memcpy (&registers[REGISTER_BYTE (regno)], &reg, sizeof (REGISTER_TYPE));
switch (REGISTER_RAW_SIZE(regno))
{
case sizeof (unsigned char):
registers[REGISTER_BYTE (regno)] = val;
break;
case sizeof (sval):
sval = val;
SWAP_TARGET_AND_HOST (&sval, sizeof (sval));
memcpy (&registers[REGISTER_BYTE (regno)], &sval, sizeof (sval));
break;
case sizeof (lval):
lval = val;
SWAP_TARGET_AND_HOST (&lval, sizeof (lval));
memcpy (&registers[REGISTER_BYTE (regno)], &lval, sizeof (lval));
break;
}
target_store_registers (regno);
}
@@ -354,8 +382,13 @@ supply_register (regno, val)
char *val;
{
register_valid[regno] = 1;
(void) memcpy (&registers[REGISTER_BYTE (regno)], val,
REGISTER_RAW_SIZE (regno));
memcpy (&registers[REGISTER_BYTE (regno)], val, REGISTER_RAW_SIZE (regno));
/* On some architectures, e.g. HPPA, there are a few stray bits in some
registers, that the rest of the code would like to ignore. */
#ifdef CLEAN_UP_REGISTER_VALUE
CLEAN_UP_REGISTER_VALUE(regno, &registers[REGISTER_BYTE(regno)]);
#endif
}
/* Given a struct symbol for a variable,
@@ -384,14 +417,14 @@ read_var_value (var, frame)
switch (SYMBOL_CLASS (var))
{
case LOC_CONST:
(void) memcpy (VALUE_CONTENTS_RAW (v), &SYMBOL_VALUE (var), len);
memcpy (VALUE_CONTENTS_RAW (v), &SYMBOL_VALUE (var), len);
SWAP_TARGET_AND_HOST (VALUE_CONTENTS_RAW (v), len);
VALUE_LVAL (v) = not_lval;
return v;
case LOC_LABEL:
addr = SYMBOL_VALUE_ADDRESS (var);
(void) memcpy (VALUE_CONTENTS_RAW (v), &addr, len);
memcpy (VALUE_CONTENTS_RAW (v), &addr, len);
SWAP_TARGET_AND_HOST (VALUE_CONTENTS_RAW (v), len);
VALUE_LVAL (v) = not_lval;
return v;
@@ -400,7 +433,7 @@ read_var_value (var, frame)
{
char *bytes_addr;
bytes_addr = SYMBOL_VALUE_BYTES (var);
(void) memcpy (VALUE_CONTENTS_RAW (v), bytes_addr, len);
memcpy (VALUE_CONTENTS_RAW (v), bytes_addr, len);
VALUE_LVAL (v) = not_lval;
return v;
}
@@ -487,6 +520,9 @@ read_var_value (var, frame)
really contains
the address of the struct, not the struct itself. GCC_P is nonzero
if the function was compiled with GCC. */
/* A cleaner way to do this would be to add LOC_REGISTER_ADDR
(register contains the address of the value) and LOC_REGPARM_ADDR,
and have the symbol-reading code set them -kingdon. */
#if !defined (REG_STRUCT_HAS_ADDR)
#define REG_STRUCT_HAS_ADDR(gcc_p) 0
#endif
@@ -494,7 +530,10 @@ read_var_value (var, frame)
if (REG_STRUCT_HAS_ADDR (BLOCK_GCC_COMPILED (b))
&& ( (TYPE_CODE (type) == TYPE_CODE_STRUCT)
|| (TYPE_CODE (type) == TYPE_CODE_UNION)))
addr = *(CORE_ADDR *)VALUE_CONTENTS (v);
{
addr = *(CORE_ADDR *)VALUE_CONTENTS (v);
VALUE_LVAL (v) = lval_memory;
}
else
return v;
}
@@ -536,7 +575,11 @@ value_from_register (type, regnum, frame)
((len - 1) / REGISTER_RAW_SIZE (regnum)) + 1 :
1);
if (num_storage_locs > 1)
if (num_storage_locs > 1
#ifdef GDB_TARGET_IS_H8500
|| TYPE_CODE (type) == TYPE_CODE_PTR
#endif
)
{
/* Value spread across multiple storage locations. */
@@ -550,33 +593,93 @@ value_from_register (type, regnum, frame)
/* Copy all of the data out, whereever it may be. */
for (local_regnum = regnum;
value_bytes_copied < len;
(value_bytes_copied += REGISTER_RAW_SIZE (local_regnum),
++local_regnum))
#ifdef GDB_TARGET_IS_H8500
/* This piece of hideosity is required because the H8500 treats registers
differently depending upon whether they are used as pointers or not. As a
pointer, a register needs to have a page register tacked onto the front.
An alternate way to do this would be to have gcc output different register
numbers for the pointer & non-pointer form of the register. But, it
doesn't, so we're stuck with this. */
if (TYPE_CODE (type) == TYPE_CODE_PTR)
{
get_saved_register (value_bytes + value_bytes_copied,
int page_regnum;
switch (regnum)
{
case R0_REGNUM: case R1_REGNUM: case R2_REGNUM: case R3_REGNUM:
page_regnum = SEG_D_REGNUM;
break;
case R4_REGNUM: case R5_REGNUM:
page_regnum = SEG_E_REGNUM;
break;
case R6_REGNUM: case R7_REGNUM:
page_regnum = SEG_T_REGNUM;
break;
}
value_bytes[0] = 0;
get_saved_register (value_bytes + 1,
&optim,
&addr,
frame,
local_regnum,
page_regnum,
&lval);
if (lval == lval_register)
reg_stor++;
else
{
mem_stor++;
first_addr = addr;
}
last_addr = addr;
if (regnum == local_regnum)
first_addr = addr;
mem_tracking =
(mem_tracking
&& (regnum == local_regnum
|| addr == last_addr));
get_saved_register (value_bytes + 2,
&optim,
&addr,
frame,
regnum,
&lval);
if (lval == lval_register)
reg_stor++;
else
{
mem_stor++;
mem_tracking = mem_tracking && (addr == last_addr);
}
last_addr = addr;
}
else
#endif /* GDB_TARGET_IS_H8500 */
for (local_regnum = regnum;
value_bytes_copied < len;
(value_bytes_copied += REGISTER_RAW_SIZE (local_regnum),
++local_regnum))
{
get_saved_register (value_bytes + value_bytes_copied,
&optim,
&addr,
frame,
local_regnum,
&lval);
if (lval == lval_register)
reg_stor++;
else
{
mem_stor++;
if (regnum == local_regnum)
first_addr = addr;
mem_tracking =
(mem_tracking
&& (regnum == local_regnum
|| addr == last_addr));
}
last_addr = addr;
}
if ((reg_stor && mem_stor)
|| (mem_stor && !mem_tracking))
@@ -608,7 +711,7 @@ value_from_register (type, regnum, frame)
endian machines. */
/* Copy into the contents section of the value. */
(void) memcpy (VALUE_CONTENTS_RAW (v), value_bytes, len);
memcpy (VALUE_CONTENTS_RAW (v), value_bytes, len);
return v;
}
@@ -625,7 +728,7 @@ value_from_register (type, regnum, frame)
/* Convert the raw contents to virtual contents.
(Just copy them if the formats are the same.) */
target_convert_to_virtual (regnum, raw_buffer, virtual_buffer);
REGISTER_CONVERT_TO_VIRTUAL (regnum, raw_buffer, virtual_buffer);
if (REGISTER_CONVERTIBLE (regnum))
{
@@ -640,11 +743,11 @@ value_from_register (type, regnum, frame)
with raw type `extended' and virtual type `double'.
Fetch it as a `double' and then convert to `float'. */
v = allocate_value (REGISTER_VIRTUAL_TYPE (regnum));
(void) memcpy (VALUE_CONTENTS_RAW (v), virtual_buffer, len);
memcpy (VALUE_CONTENTS_RAW (v), virtual_buffer, len);
v = value_cast (type, v);
}
else
(void) memcpy (VALUE_CONTENTS_RAW (v), virtual_buffer, len);
memcpy (VALUE_CONTENTS_RAW (v), virtual_buffer, len);
}
else
{
@@ -658,8 +761,7 @@ value_from_register (type, regnum, frame)
}
#endif
(void) memcpy (VALUE_CONTENTS_RAW (v), virtual_buffer + VALUE_OFFSET (v),
len);
memcpy (VALUE_CONTENTS_RAW (v), virtual_buffer + VALUE_OFFSET (v), len);
}
return v;
@@ -684,7 +786,7 @@ locate_var_value (var, frame)
lazy_value = read_var_value (var, frame);
if (lazy_value == 0)
error ("Address of \"%s\" is unknown.", SYMBOL_NAME (var));
error ("Address of \"%s\" is unknown.", SYMBOL_SOURCE_NAME (var));
if (VALUE_LAZY (lazy_value)
|| TYPE_CODE (type) == TYPE_CODE_FUNC)
@@ -699,12 +801,12 @@ locate_var_value (var, frame)
case lval_register:
case lval_reg_frame_relative:
error ("Address requested for identifier \"%s\" which is in a register.",
SYMBOL_NAME (var));
SYMBOL_SOURCE_NAME (var));
break;
default:
error ("Can't take address of \"%s\" which isn't an lvalue.",
SYMBOL_NAME (var));
SYMBOL_SOURCE_NAME (var));
break;
}
return 0; /* For lint -- never reached */