/* Find a variable's value in memory, for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003 Free Software
+ Foundation, Inc.
This file is part of GDB.
#include "symfile.h" /* for overlay functions */
#include "regcache.h"
#include "builtin-regs.h"
+#include "block.h"
/* Basic byte-swapping routines. GDB has needed these for a long time...
All extract a target-format integer at ADDR which is LEN bytes long. */
#endif
LONGEST
-extract_signed_integer (void *addr, int len)
+extract_signed_integer (const void *addr, int len)
{
LONGEST retval;
- unsigned char *p;
- unsigned char *startaddr = (unsigned char *) addr;
- unsigned char *endaddr = startaddr + len;
+ const unsigned char *p;
+ const unsigned char *startaddr = addr;
+ const unsigned char *endaddr = startaddr + len;
if (len > (int) sizeof (LONGEST))
error ("\
}
ULONGEST
-extract_unsigned_integer (void *addr, int len)
+extract_unsigned_integer (const void *addr, int len)
{
ULONGEST retval;
- unsigned char *p;
- unsigned char *startaddr = (unsigned char *) addr;
- unsigned char *endaddr = startaddr + len;
+ const unsigned char *p;
+ const unsigned char *startaddr = addr;
+ const unsigned char *endaddr = startaddr + len;
if (len > (int) sizeof (ULONGEST))
error ("\
function returns 1 and sets *PVAL. Otherwise it returns 0. */
int
-extract_long_unsigned_integer (void *addr, int orig_len, LONGEST *pval)
+extract_long_unsigned_integer (const void *addr, int orig_len, LONGEST *pval)
{
char *p, *first_addr;
int len;
else based on POINTER_TO_ADDRESS. */
CORE_ADDR
-extract_address (void *addr, int len)
+extract_address (const void *addr, int len)
{
/* Assume a CORE_ADDR can fit in a LONGEST (for now). Not sure
whether we want this to be true eventually. */
/* Treat the bytes at BUF as a pointer of type TYPE, and return the
address it represents. */
CORE_ADDR
-extract_typed_address (void *buf, struct type *type)
+extract_typed_address (const void *buf, struct type *type)
{
if (TYPE_CODE (type) != TYPE_CODE_PTR
&& TYPE_CODE (type) != TYPE_CODE_REF)
}
}
-/* Store the address VAL as a LEN-byte value in target byte order at
- ADDR. ADDR is a buffer in the GDB process, not in the inferior.
-
- This function should only be used by target-specific code. It
- assumes that a pointer has the same representation as that thing's
- address represented as an integer. Some machines use word
- addresses, or similarly munged things, for certain types of
- pointers, so that assumption doesn't hold everywhere.
-
- Common code should use store_typed_address instead, or something else
- based on ADDRESS_TO_POINTER. */
-void
-store_address (void *addr, int len, LONGEST val)
-{
- store_unsigned_integer (addr, len, val);
-}
-
-
/* Store the address ADDR as a pointer of type TYPE at BUF, in target
form. */
void
/* Return a `value' with the contents of (virtual or cooked) register
REGNUM as found in the specified FRAME. The register's type is
- determined by REGISTER_VIRTUAL_TYPE.
+ determined by register_type().
NOTE: returns NULL if register value is not available. Caller will
check return value or die! */
CORE_ADDR addr;
int optim;
struct value *reg_val;
- char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
+ int realnum;
+ char raw_buffer[MAX_REGISTER_SIZE];
enum lval_type lval;
/* Builtin registers lie completly outside of the range of normal
registers. Catch them early so that the target never sees them. */
if (regnum >= NUM_REGS + NUM_PSEUDO_REGS)
- return value_of_builtin_reg (regnum, selected_frame);
+ return value_of_builtin_reg (regnum, frame);
+
+ frame_register (frame, regnum, &optim, &lval, &addr, &realnum, raw_buffer);
+
+ /* FIXME: cagney/2002-05-15: This test is just bogus.
- get_saved_register (raw_buffer, &optim, &addr,
- frame, regnum, &lval);
+ It indicates that the target failed to supply a value for a
+ register because it was "not available" at this time. Problem
+ is, the target still has the register and so get saved_register()
+ may be returning a value saved on the stack. */
if (register_cached (regnum) < 0)
return NULL; /* register value not available */
- reg_val = allocate_value (REGISTER_VIRTUAL_TYPE (regnum));
+ reg_val = allocate_value (register_type (current_gdbarch, regnum));
/* Convert raw data to virtual format if necessary. */
if (REGISTER_CONVERTIBLE (regnum))
{
- REGISTER_CONVERT_TO_VIRTUAL (regnum, REGISTER_VIRTUAL_TYPE (regnum),
+ REGISTER_CONVERT_TO_VIRTUAL (regnum, register_type (current_gdbarch, regnum),
raw_buffer, VALUE_CONTENTS_RAW (reg_val));
}
else if (REGISTER_RAW_SIZE (regnum) == REGISTER_VIRTUAL_SIZE (regnum))
/* Given a pointer of type TYPE in target form in BUF, return the
address it represents. */
CORE_ADDR
-unsigned_pointer_to_address (struct type *type, void *buf)
+unsigned_pointer_to_address (struct type *type, const void *buf)
{
- return extract_address (buf, TYPE_LENGTH (type));
+ return extract_unsigned_integer (buf, TYPE_LENGTH (type));
}
CORE_ADDR
-signed_pointer_to_address (struct type *type, void *buf)
+signed_pointer_to_address (struct type *type, const void *buf)
{
return extract_signed_integer (buf, TYPE_LENGTH (type));
}
void
unsigned_address_to_pointer (struct type *type, void *buf, CORE_ADDR addr)
{
- store_address (buf, TYPE_LENGTH (type), addr);
+ store_unsigned_integer (buf, TYPE_LENGTH (type), addr);
}
void
{
/* All cases listed explicitly so that gcc -Wall will detect it if
we failed to consider one. */
+ case LOC_COMPUTED:
+ case LOC_COMPUTED_ARG:
+ {
+ struct location_funcs *symfuncs = SYMBOL_LOCATION_FUNCS (sym);
+ return (symfuncs->read_needs_frame) (sym);
+ }
+ break;
+
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
case LOC_LOCAL_ARG:
case LOC_BASEREG:
case LOC_BASEREG_ARG:
- case LOC_THREAD_LOCAL_STATIC:
+ case LOC_HP_THREAD_LOCAL_STATIC:
return 1;
case LOC_UNDEF:
and a stack frame id, read the value of the variable
and return a (pointer to a) struct value containing the value.
If the variable cannot be found, return a zero pointer.
- If FRAME is NULL, use the selected_frame. */
+ If FRAME is NULL, use the deprecated_selected_frame. */
struct value *
read_var_value (register struct symbol *var, struct frame_info *frame)
len = TYPE_LENGTH (type);
if (frame == NULL)
- frame = selected_frame;
+ frame = deprecated_selected_frame;
switch (SYMBOL_CLASS (var))
{
case LOC_ARG:
if (frame == NULL)
return 0;
- addr = FRAME_ARGS_ADDRESS (frame);
+ addr = get_frame_args_address (frame);
if (!addr)
return 0;
addr += SYMBOL_VALUE (var);
CORE_ADDR argref;
if (frame == NULL)
return 0;
- argref = FRAME_ARGS_ADDRESS (frame);
+ argref = get_frame_args_address (frame);
if (!argref)
return 0;
argref += SYMBOL_VALUE (var);
case LOC_LOCAL_ARG:
if (frame == NULL)
return 0;
- addr = FRAME_LOCALS_ADDRESS (frame);
+ addr = get_frame_locals_address (frame);
addr += SYMBOL_VALUE (var);
break;
case LOC_BASEREG:
case LOC_BASEREG_ARG:
- case LOC_THREAD_LOCAL_STATIC:
+ case LOC_HP_THREAD_LOCAL_STATIC:
{
struct value *regval;
break;
}
+ case LOC_THREAD_LOCAL_STATIC:
+ {
+ if (target_get_thread_local_address_p ())
+ addr = target_get_thread_local_address (inferior_ptid,
+ SYMBOL_OBJFILE (var),
+ SYMBOL_VALUE_ADDRESS (var));
+ /* It wouldn't be wrong here to try a gdbarch method, too;
+ finding TLS is an ABI-specific thing. But we don't do that
+ yet. */
+ else
+ error ("Cannot find thread-local variables on this target");
+ break;
+ }
+
case LOC_TYPEDEF:
error ("Cannot look up value of a typedef");
break;
}
break;
+ case LOC_COMPUTED:
+ case LOC_COMPUTED_ARG:
+ {
+ struct location_funcs *funcs = SYMBOL_LOCATION_FUNCS (var);
+
+ if (frame == 0 && (funcs->read_needs_frame) (var))
+ return 0;
+ return (funcs->read_variable) (var, frame);
+
+ }
+ break;
+
case LOC_UNRESOLVED:
{
struct minimal_symbol *msym;
- msym = lookup_minimal_symbol (SYMBOL_NAME (var), NULL, NULL);
+ msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (var), NULL, NULL);
if (msym == NULL)
return 0;
if (overlay_debugging)
struct value *
value_from_register (struct type *type, int regnum, struct frame_info *frame)
{
- char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
+ char raw_buffer[MAX_REGISTER_SIZE];
CORE_ADDR addr;
int optim;
struct value *v = allocate_value (type);
1);
if (num_storage_locs > 1
-#ifdef GDB_TARGET_IS_H8500
- || TYPE_CODE (type) == TYPE_CODE_PTR
+#if 0
+ // OBSOLETE #ifdef GDB_TARGET_IS_H8500
+ // OBSOLETE || TYPE_CODE (type) == TYPE_CODE_PTR
+ // OBSOLETE #endif
#endif
)
{
CORE_ADDR last_addr = 0;
CORE_ADDR first_addr = 0;
- value_bytes = (char *) alloca (len + MAX_REGISTER_RAW_SIZE);
+ value_bytes = (char *) alloca (len + MAX_REGISTER_SIZE);
/* Copy all of the data out, whereever it may be. */
-#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
- && len > 2)
- {
- 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,
- page_regnum,
- &lval);
-
- if (register_cached (page_regnum) == -1)
- return NULL; /* register value not available */
-
- if (lval == lval_register)
- reg_stor++;
- else
- mem_stor++;
- first_addr = addr;
- last_addr = addr;
-
- get_saved_register (value_bytes + 2,
- &optim,
- &addr,
- frame,
- regnum,
- &lval);
-
- if (register_cached (regnum) == -1)
- return NULL; /* register value not available */
-
- 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 */
+#if 0
+ // OBSOLETE #ifdef GDB_TARGET_IS_H8500
+ // OBSOLETE /* This piece of hideosity is required because the H8500 treats registers
+ // OBSOLETE differently depending upon whether they are used as pointers or not. As a
+ // OBSOLETE pointer, a register needs to have a page register tacked onto the front.
+ // OBSOLETE An alternate way to do this would be to have gcc output different register
+ // OBSOLETE numbers for the pointer & non-pointer form of the register. But, it
+ // OBSOLETE doesn't, so we're stuck with this. */
+ // OBSOLETE
+ // OBSOLETE if (TYPE_CODE (type) == TYPE_CODE_PTR
+ // OBSOLETE && len > 2)
+ // OBSOLETE {
+ // OBSOLETE int page_regnum;
+ // OBSOLETE
+ // OBSOLETE switch (regnum)
+ // OBSOLETE {
+ // OBSOLETE case R0_REGNUM:
+ // OBSOLETE case R1_REGNUM:
+ // OBSOLETE case R2_REGNUM:
+ // OBSOLETE case R3_REGNUM:
+ // OBSOLETE page_regnum = SEG_D_REGNUM;
+ // OBSOLETE break;
+ // OBSOLETE case R4_REGNUM:
+ // OBSOLETE case R5_REGNUM:
+ // OBSOLETE page_regnum = SEG_E_REGNUM;
+ // OBSOLETE break;
+ // OBSOLETE case R6_REGNUM:
+ // OBSOLETE case R7_REGNUM:
+ // OBSOLETE page_regnum = SEG_T_REGNUM;
+ // OBSOLETE break;
+ // OBSOLETE }
+ // OBSOLETE
+ // OBSOLETE value_bytes[0] = 0;
+ // OBSOLETE get_saved_register (value_bytes + 1,
+ // OBSOLETE &optim,
+ // OBSOLETE &addr,
+ // OBSOLETE frame,
+ // OBSOLETE page_regnum,
+ // OBSOLETE &lval);
+ // OBSOLETE
+ // OBSOLETE if (register_cached (page_regnum) == -1)
+ // OBSOLETE return NULL; /* register value not available */
+ // OBSOLETE
+ // OBSOLETE if (lval == lval_register)
+ // OBSOLETE reg_stor++;
+ // OBSOLETE else
+ // OBSOLETE mem_stor++;
+ // OBSOLETE first_addr = addr;
+ // OBSOLETE last_addr = addr;
+ // OBSOLETE
+ // OBSOLETE get_saved_register (value_bytes + 2,
+ // OBSOLETE &optim,
+ // OBSOLETE &addr,
+ // OBSOLETE frame,
+ // OBSOLETE regnum,
+ // OBSOLETE &lval);
+ // OBSOLETE
+ // OBSOLETE if (register_cached (regnum) == -1)
+ // OBSOLETE return NULL; /* register value not available */
+ // OBSOLETE
+ // OBSOLETE if (lval == lval_register)
+ // OBSOLETE reg_stor++;
+ // OBSOLETE else
+ // OBSOLETE {
+ // OBSOLETE mem_stor++;
+ // OBSOLETE mem_tracking = mem_tracking && (addr == last_addr);
+ // OBSOLETE }
+ // OBSOLETE last_addr = addr;
+ // OBSOLETE }
+ // OBSOLETE else
+ // OBSOLETE #endif /* GDB_TARGET_IS_H8500 */
+#endif
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);
+ int realnum;
+ frame_register (frame, local_regnum, &optim, &lval, &addr,
+ &realnum, value_bytes + value_bytes_copied);
if (register_cached (local_regnum) == -1)
return NULL; /* register value not available */
for some good purpose. */
{
VALUE_LVAL (v) = lval_reg_frame_relative;
- VALUE_FRAME (v) = FRAME_FP (frame);
+ VALUE_FRAME (v) = get_frame_base (frame);
VALUE_FRAME_REGNUM (v) = regnum;
}
else if (mem_stor)
register's contents in a real register or in core;
read the data in raw format. */
- get_saved_register (raw_buffer, &optim, &addr, frame, regnum, &lval);
+ {
+ int realnum;
+ frame_register (frame, regnum, &optim, &lval, &addr, &realnum, raw_buffer);
+ }
if (register_cached (regnum) == -1)
return NULL; /* register value not available */
VALUE_LVAL (v) = lval;
VALUE_ADDRESS (v) = addr;
- /* Convert raw data to virtual format if necessary. */
+ /* Convert the raw register to the corresponding data value's memory
+ format, if necessary. */
- if (REGISTER_CONVERTIBLE (regnum))
+ if (CONVERT_REGISTER_P (regnum))
{
- REGISTER_CONVERT_TO_VIRTUAL (regnum, type,
- raw_buffer, VALUE_CONTENTS_RAW (v));
+ REGISTER_TO_VALUE (regnum, type, raw_buffer, VALUE_CONTENTS_RAW (v));
}
else
{
lazy_value = read_var_value (var, frame);
if (lazy_value == 0)
- error ("Address of \"%s\" is unknown.", SYMBOL_SOURCE_NAME (var));
+ error ("Address of \"%s\" is unknown.", SYMBOL_PRINT_NAME (var));
if (VALUE_LAZY (lazy_value)
|| TYPE_CODE (type) == TYPE_CODE_FUNC)
&& *REGISTER_NAME (VALUE_REGNO (lazy_value)) != '\0');
error("Address requested for identifier "
"\"%s\" which is in register $%s",
- SYMBOL_SOURCE_NAME (var),
+ SYMBOL_PRINT_NAME (var),
REGISTER_NAME (VALUE_REGNO (lazy_value)));
break;
&& *REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)) != '\0');
error("Address requested for identifier "
"\"%s\" which is in frame register $%s",
- SYMBOL_SOURCE_NAME (var),
+ SYMBOL_PRINT_NAME (var),
REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)));
break;
default:
error ("Can't take address of \"%s\" which isn't an lvalue.",
- SYMBOL_SOURCE_NAME (var));
+ SYMBOL_PRINT_NAME (var));
break;
}
return 0; /* For lint -- never reached */
projects / deliverable / binutils-gdb.git / blobdiff