to read_reg and update its comment. Remove regnum member.
* dwarf2expr.c (execute_stack_op): Remove memaddr and expr_lval.
Don't call read_reg when setting in_reg. Call read_reg to get
the frame base if it's in a register. Return the register number
on the stack instead of in the context. Remove extra arguments
to read_reg.
* dwarf2loc.c (dwarf_expr_read_reg): Remove extra arguments.
(dwarf2_evaluate_loc_desc): Call value_from_register. Expect
the register number on the expression stack.
(needs_frame_read_reg): Remove extra arguments.
2003-04-13 Daniel Jacobowitz <drow@mvista.com>
+ * dwarf2expr.h (struct dwarf_expr_context): Remove extra arguments
+ to read_reg and update its comment. Remove regnum member.
+ * dwarf2expr.c (execute_stack_op): Remove memaddr and expr_lval.
+ Don't call read_reg when setting in_reg. Call read_reg to get
+ the frame base if it's in a register. Return the register number
+ on the stack instead of in the context. Remove extra arguments
+ to read_reg.
+ * dwarf2loc.c (dwarf_expr_read_reg): Remove extra arguments.
+ (dwarf2_evaluate_loc_desc): Call value_from_register. Expect
+ the register number on the expression stack.
+ (needs_frame_read_reg): Remove extra arguments.
+
+2003-04-13 Daniel Jacobowitz <drow@mvista.com>
+
* dwarf2expr.c (dwarf2_read_address): Renamed from read_address;
made non-static.
(execute_stack_op): All callers updated.
while (op_ptr < op_end)
{
enum dwarf_location_atom op = *op_ptr++;
- CORE_ADDR result, memaddr;
+ CORE_ADDR result;
ULONGEST uoffset, reg;
LONGEST offset;
int bytes_read;
- enum lval_type expr_lval;
ctx->in_reg = 0;
error ("DWARF-2 expression error: DW_OP_reg operations must be "
"used alone.");
- /* FIXME drow/2003-02-21: This call to read_reg could be pushed
- into the evaluator's caller by changing the semantics for in_reg.
- Then we wouldn't need to return an lval_type and a memaddr. */
- result = (ctx->read_reg) (ctx->baton, op - DW_OP_reg0, &expr_lval,
- &memaddr);
-
- if (expr_lval == lval_register)
- {
- ctx->regnum = op - DW_OP_reg0;
- ctx->in_reg = 1;
- }
- else
- result = memaddr;
+ result = op - DW_OP_reg0;
+ ctx->in_reg = 1;
break;
error ("DWARF-2 expression error: DW_OP_reg operations must be "
"used alone.");
- result = (ctx->read_reg) (ctx->baton, reg, &expr_lval, &memaddr);
-
- if (expr_lval == lval_register)
- {
- ctx->regnum = reg;
- ctx->in_reg = 1;
- }
- else
- result = memaddr;
-
+ result = reg;
+ ctx->in_reg = 1;
break;
case DW_OP_breg0:
case DW_OP_breg31:
{
op_ptr = read_sleb128 (op_ptr, op_end, &offset);
- result = (ctx->read_reg) (ctx->baton, op - DW_OP_breg0,
- &expr_lval, &memaddr);
+ result = (ctx->read_reg) (ctx->baton, op - DW_OP_breg0);
result += offset;
}
break;
{
op_ptr = read_uleb128 (op_ptr, op_end, ®);
op_ptr = read_sleb128 (op_ptr, op_end, &offset);
- result = (ctx->read_reg) (ctx->baton, reg, &expr_lval, &memaddr);
+ result = (ctx->read_reg) (ctx->baton, reg);
result += offset;
}
break;
(ctx->get_frame_base) (ctx->baton, &datastart, &datalen);
dwarf_expr_eval (ctx, datastart, datalen);
result = dwarf_expr_fetch (ctx, 0);
- if (! ctx->in_reg)
+ if (ctx->in_reg)
+ result = (ctx->read_reg) (ctx->baton, result);
+ else
{
char *buf = alloca (TARGET_ADDR_BIT / TARGET_CHAR_BIT);
int bytes_read;
to all of the callback functions. */
void *baton;
- /* Return the value of register number REGNUM. LVALP will be set
- to the kind of lval this register is (generally lval_register
- for the current frame's registers or lval_memory for a register
- saved to the stack). For lval_memory ADDRP will be set to the
- saved location of the register. */
- CORE_ADDR (*read_reg) (void *baton, int regnum, enum lval_type *lvalp,
- CORE_ADDR *addrp);
+ /* Return the value of register number REGNUM. */
+ CORE_ADDR (*read_reg) (void *baton, int regnum);
/* Read LENGTH bytes at ADDR into BUF. */
void (*read_mem) (void *baton, char *buf, CORE_ADDR addr,
int recursion_depth, max_recursion_depth;
/* Non-zero if the result is in a register. The register number
- will be in REGNUM, and the result will be the contents of the
- register. */
+ will be on the expression stack. */
int in_reg;
-
- /* If the result is in a register, the register number. */
- int regnum;
};
struct dwarf_expr_context *new_dwarf_expr_context ();
type will be returned in LVALP, and for lval_memory the register
save address will be returned in ADDRP. */
static CORE_ADDR
-dwarf_expr_read_reg (void *baton, int dwarf_regnum, enum lval_type *lvalp,
- CORE_ADDR *addrp)
+dwarf_expr_read_reg (void *baton, int dwarf_regnum)
{
struct dwarf_expr_baton *debaton = (struct dwarf_expr_baton *) baton;
- CORE_ADDR result;
+ CORE_ADDR result, save_addr;
+ enum lval_type lval_type;
char *buf;
int optimized, regnum, realnum, regsize;
regsize = register_size (current_gdbarch, regnum);
buf = (char *) alloca (regsize);
- frame_register (debaton->frame, regnum, &optimized, lvalp, addrp, &realnum,
- buf);
+ frame_register (debaton->frame, regnum, &optimized, &lval_type, &save_addr,
+ &realnum, buf);
result = extract_address (buf, regsize);
return result;
ctx->get_tls_address = dwarf_expr_tls_address;
dwarf_expr_eval (ctx, data, size);
-
- retval = allocate_value (SYMBOL_TYPE (var));
- VALUE_BFD_SECTION (retval) = SYMBOL_BFD_SECTION (var);
+ result = dwarf_expr_fetch (ctx, 0);
if (ctx->in_reg)
- {
- store_unsigned_integer (VALUE_CONTENTS_RAW (retval),
- TYPE_LENGTH (SYMBOL_TYPE (var)),
- dwarf_expr_fetch (ctx, 0));
- VALUE_LVAL (retval) = lval_register;
- VALUE_REGNO (retval) = ctx->regnum;
- }
+ retval = value_from_register (SYMBOL_TYPE (var), result, frame);
else
{
- result = dwarf_expr_fetch (ctx, 0);
+ retval = allocate_value (SYMBOL_TYPE (var));
+ VALUE_BFD_SECTION (retval) = SYMBOL_BFD_SECTION (var);
+
VALUE_LVAL (retval) = lval_memory;
VALUE_LAZY (retval) = 1;
VALUE_ADDRESS (retval) = result;
/* Reads from registers do require a frame. */
static CORE_ADDR
-needs_frame_read_reg (void *baton, int regnum, enum lval_type *lvalp,
- CORE_ADDR *addrp)
+needs_frame_read_reg (void *baton, int regnum)
{
struct needs_frame_baton *nf_baton = baton;
nf_baton->needs_frame = 1;
projects / external / binutils.git / commitdiff