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wine/programs/winedbg/expr.c
Jonathan Ernst 360a3f9142 Update the address of the Free Software Foundation.
2006-05-23 14:11:13 +02:00

885 lines
28 KiB
C
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/*
* File expr.c - expression handling for Wine internal debugger.
*
* Copyright (C) 1997, Eric Youngdale.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include "debugger.h"
#include "expr.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
struct expr
{
unsigned int type;
union
{
struct
{
int value;
} s_const;
struct
{
unsigned int value;
} u_const;
struct
{
const char* str;
} string;
struct
{
const char* name;
} symbol;
struct
{
const char* name;
} intvar;
struct
{
int unop_type;
struct expr* exp1;
long int result;
} unop;
struct
{
int binop_type;
struct expr* exp1;
struct expr* exp2;
long int result;
} binop;
struct
{
struct type_expr_t cast_to;
struct expr* expr;
} cast;
struct
{
struct expr* exp1;
const char* element_name;
long int result;
} structure;
struct
{
const char* funcname;
int nargs;
struct expr* arg[5];
long int result;
} call;
} un;
};
#define EXPR_TYPE_S_CONST 0
#define EXPR_TYPE_U_CONST 1
#define EXPR_TYPE_SYMBOL 2
#define EXPR_TYPE_INTVAR 3
#define EXPR_TYPE_BINOP 4
#define EXPR_TYPE_UNOP 5
#define EXPR_TYPE_STRUCT 6
#define EXPR_TYPE_PSTRUCT 7
#define EXPR_TYPE_CALL 8
#define EXPR_TYPE_STRING 9
#define EXPR_TYPE_CAST 10
static char expr_list[4096];
static unsigned int next_expr_free = 0;
static struct expr* expr_alloc(void)
{
struct expr* rtn;
rtn = (struct expr*)&expr_list[next_expr_free];
next_expr_free += sizeof(struct expr);
assert(next_expr_free < sizeof(expr_list));
return rtn;
}
void expr_free_all(void)
{
next_expr_free = 0;
}
struct expr* expr_alloc_typecast(struct type_expr_t* tet, struct expr* exp)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_CAST;
ex->un.cast.cast_to = *tet;
ex->un.cast.expr = exp;
return ex;
}
struct expr* expr_alloc_internal_var(const char* name)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_INTVAR;
ex->un.intvar.name = name;
return ex;
}
struct expr* expr_alloc_symbol(const char* name)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_SYMBOL;
ex->un.symbol.name = name;
return ex;
}
struct expr* expr_alloc_sconstant(int value)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_S_CONST;
ex->un.s_const.value = value;
return ex;
}
struct expr* expr_alloc_uconstant(unsigned int value)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_U_CONST;
ex->un.u_const.value = value;
return ex;
}
struct expr* expr_alloc_string(const char* str)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_STRING;
ex->un.string.str = str;
return ex;
}
struct expr* expr_alloc_binary_op(int op_type, struct expr* exp1, struct expr* exp2)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_BINOP;
ex->un.binop.binop_type = op_type;
ex->un.binop.exp1 = exp1;
ex->un.binop.exp2 = exp2;
return ex;
}
struct expr* expr_alloc_unary_op(int op_type, struct expr* exp1)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_UNOP;
ex->un.unop.unop_type = op_type;
ex->un.unop.exp1 = exp1;
return ex;
}
struct expr* expr_alloc_struct(struct expr* exp, const char* element)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_STRUCT;
ex->un.structure.exp1 = exp;
ex->un.structure.element_name = element;
return ex;
}
struct expr* expr_alloc_pstruct(struct expr* exp, const char* element)
{
struct expr* ex;
ex = expr_alloc();
ex->type = EXPR_TYPE_PSTRUCT;
ex->un.structure.exp1 = exp;
ex->un.structure.element_name = element;
return ex;
}
struct expr* expr_alloc_func_call(const char* funcname, int nargs, ...)
{
struct expr* ex;
va_list ap;
int i;
ex = expr_alloc();
ex->type = EXPR_TYPE_CALL;
ex->un.call.funcname = funcname;
ex->un.call.nargs = nargs;
va_start(ap, nargs);
for (i = 0; i < nargs; i++)
{
ex->un.call.arg[i] = va_arg(ap, struct expr*);
}
va_end(ap);
return ex;
}
/******************************************************************
* expr_eval
*
*/
struct dbg_lvalue expr_eval(struct expr* exp)
{
struct dbg_lvalue rtn;
int i;
struct dbg_lvalue exp1;
struct dbg_lvalue exp2;
unsigned int cexp[5];
DWORD64 scale1, scale2, scale3;
struct dbg_type type1, type2;
DWORD tag;
const struct dbg_internal_var* div;
rtn.cookie = 0;
rtn.type.id = dbg_itype_none;
rtn.type.module = 0;
rtn.addr.Mode = AddrModeFlat;
rtn.addr.Offset = 0;
rtn.addr.Segment = 0;
switch (exp->type)
{
case EXPR_TYPE_CAST:
/* this is really brute force, we simply change the type... without
* checking if this is right or not
*/
rtn = expr_eval(exp->un.cast.expr);
switch (exp->un.cast.cast_to.type)
{
case type_expr_type_id:
if (exp->un.cast.cast_to.u.type.id == dbg_itype_none)
{
dbg_printf("Can't cast to unknown type\n");
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
}
rtn.type = exp->un.cast.cast_to.u.type;
break;
case type_expr_udt_class:
case type_expr_udt_struct:
case type_expr_udt_union:
rtn.type = types_find_type(rtn.type.module, exp->un.cast.cast_to.u.name,
SymTagUDT);
if (rtn.type.id == dbg_itype_none)
{
dbg_printf("Can't cast to UDT %s\n", exp->un.cast.cast_to.u.name);
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
}
break;
case type_expr_enumeration:
rtn.type = types_find_type(rtn.type.module, exp->un.cast.cast_to.u.name,
SymTagEnum);
if (rtn.type.id == dbg_itype_none)
{
dbg_printf("Can't cast to enumeration %s\n", exp->un.cast.cast_to.u.name);
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
}
break;
default:
dbg_printf("Unsupported cast type %u\n", exp->un.cast.cast_to.type);
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
}
for (i = 0; i < exp->un.cast.cast_to.deref_count; i++)
{
rtn.type = types_find_pointer(&rtn.type);
if (rtn.type.id == dbg_itype_none)
{
dbg_printf("Cannot find pointer type\n");
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
}
}
break;
case EXPR_TYPE_STRING:
rtn.cookie = DLV_HOST;
rtn.type.id = dbg_itype_astring;
rtn.type.module = 0;
rtn.addr.Offset = (unsigned int)&exp->un.string.str;
break;
case EXPR_TYPE_U_CONST:
rtn.cookie = DLV_HOST;
rtn.type.id = dbg_itype_unsigned_int;
rtn.type.module = 0;
rtn.addr.Offset = (unsigned int)&exp->un.u_const.value;
break;
case EXPR_TYPE_S_CONST:
rtn.cookie = DLV_HOST;
rtn.type.id = dbg_itype_signed_int;
rtn.type.module = 0;
rtn.addr.Offset = (unsigned int)&exp->un.s_const.value;
break;
case EXPR_TYPE_SYMBOL:
switch (symbol_get_lvalue(exp->un.symbol.name, -1, &rtn, FALSE))
{
case sglv_found:
break;
case sglv_unknown:
RaiseException(DEBUG_STATUS_NO_SYMBOL, 0, 0, NULL);
/* should never be here */
case sglv_aborted:
RaiseException(DEBUG_STATUS_ABORT, 0, 0, NULL);
/* should never be here */
}
break;
case EXPR_TYPE_PSTRUCT:
exp1 = expr_eval(exp->un.structure.exp1);
if (exp1.type.id == dbg_itype_none || !types_deref(&exp1, &rtn) ||
rtn.type.id == dbg_itype_none)
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
if (!types_udt_find_element(&rtn, exp->un.structure.element_name,
&exp->un.structure.result))
{
dbg_printf("%s\n", exp->un.structure.element_name);
RaiseException(DEBUG_STATUS_NO_FIELD, 0, 0, NULL);
}
break;
case EXPR_TYPE_STRUCT:
exp1 = expr_eval(exp->un.structure.exp1);
if (exp1.type.id == dbg_itype_none) RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
rtn = exp1;
if (!types_udt_find_element(&rtn, exp->un.structure.element_name,
&exp->un.structure.result))
{
dbg_printf("%s\n", exp->un.structure.element_name);
RaiseException(DEBUG_STATUS_NO_FIELD, 0, 0, NULL);
}
break;
case EXPR_TYPE_CALL:
/*
* First, evaluate all of the arguments. If any of them are not
* evaluable, then bail.
*/
for (i = 0; i < exp->un.call.nargs; i++)
{
exp1 = expr_eval(exp->un.call.arg[i]);
if (exp1.type.id == dbg_itype_none)
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
cexp[i] = types_extract_as_integer(&exp1);
}
/*
* Now look up the address of the function itself.
*/
switch (symbol_get_lvalue(exp->un.call.funcname, -1, &rtn, FALSE))
{
case sglv_found:
break;
case sglv_unknown:
RaiseException(DEBUG_STATUS_NO_SYMBOL, 0, 0, NULL);
/* should never be here */
case sglv_aborted:
RaiseException(DEBUG_STATUS_ABORT, 0, 0, NULL);
/* should never be here */
}
#if 0
/* FIXME: NEWDBG NIY */
/* Anyway, I wonder how this could work depending on the calling order of
* the function (cdecl vs pascal for example)
*/
int (*fptr)();
fptr = (int (*)()) rtn.addr.off;
switch (exp->un.call.nargs)
{
case 0:
exp->un.call.result = (*fptr)();
break;
case 1:
exp->un.call.result = (*fptr)(cexp[0]);
break;
case 2:
exp->un.call.result = (*fptr)(cexp[0], cexp[1]);
break;
case 3:
exp->un.call.result = (*fptr)(cexp[0], cexp[1], cexp[2]);
break;
case 4:
exp->un.call.result = (*fptr)(cexp[0], cexp[1], cexp[2], cexp[3]);
break;
case 5:
exp->un.call.result = (*fptr)(cexp[0], cexp[1], cexp[2], cexp[3], cexp[4]);
break;
}
#else
dbg_printf("Function call no longer implemented\n");
/* would need to set up a call to this function, and then restore the current
* context afterwards...
*/
exp->un.call.result = 0;
#endif
rtn.cookie = DLV_HOST;
/* get return type from function signature tupe */
types_get_info(&rtn.type, TI_GET_TYPE, &rtn.type.id);
rtn.addr.Offset = (unsigned int)&exp->un.call.result;
break;
case EXPR_TYPE_INTVAR:
rtn.cookie = DLV_HOST;
if (!(div = dbg_get_internal_var(exp->un.intvar.name)))
RaiseException(DEBUG_STATUS_NO_SYMBOL, 0, 0, NULL);
rtn.type.id = div->typeid;
rtn.type.module = 0;
rtn.addr.Offset = (unsigned int)div->pval;
break;
case EXPR_TYPE_BINOP:
rtn.cookie = DLV_HOST;
exp1 = expr_eval(exp->un.binop.exp1);
exp2 = expr_eval(exp->un.binop.exp2);
if (exp1.type.id == dbg_itype_none || exp2.type.id == dbg_itype_none)
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
rtn.type.id = dbg_itype_signed_int;
rtn.type.module = 0;
rtn.addr.Offset = (unsigned int)&exp->un.binop.result;
type1 = exp1.type;
type2 = exp2.type;
switch (exp->un.binop.binop_type)
{
case EXP_OP_ADD:
if (!types_get_info(&exp1.type, TI_GET_SYMTAG, &tag) ||
tag != SymTagPointerType ||
!types_get_info(&exp1.type, TI_GET_TYPE, &type1.id))
type1.id = dbg_itype_none;
if (!types_get_info(&exp2.type, TI_GET_SYMTAG, &tag) ||
tag != SymTagPointerType ||
!types_get_info(&exp2.type, TI_GET_TYPE, &type2.id))
type2.id = dbg_itype_none;
scale1 = 1;
scale2 = 1;
if (type1.id != dbg_itype_none && type2.id != dbg_itype_none)
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
if (type1.id != dbg_itype_none)
{
types_get_info(&type1, TI_GET_LENGTH, &scale2);
rtn.type = exp1.type;
}
else if (type2.id != dbg_itype_none)
{
types_get_info(&type2, TI_GET_LENGTH, &scale1);
rtn.type = exp2.type;
}
exp->un.binop.result = types_extract_as_integer(&exp1) * (DWORD)scale1 +
(DWORD)scale2 * types_extract_as_integer(&exp2);
break;
case EXP_OP_SUB:
if (!types_get_info(&exp1.type, TI_GET_SYMTAG, &tag) ||
tag != SymTagPointerType ||
!types_get_info(&exp1.type, TI_GET_TYPE, &type1.id))
type1.id = dbg_itype_none;
if (!types_get_info(&exp2.type, TI_GET_SYMTAG, &tag) ||
tag != SymTagPointerType ||
!types_get_info(&exp2.type, TI_GET_TYPE, &type2.id))
type2.id = dbg_itype_none;
scale1 = 1;
scale2 = 1;
scale3 = 1;
if (type1.id != dbg_itype_none && type2.id != dbg_itype_none)
{
WINE_FIXME("This may fail (if module base address are wrongly calculated)\n");
if (memcmp(&type1, &type2, sizeof(struct dbg_type)))
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
types_get_info(&type1, TI_GET_LENGTH, &scale3);
}
else if (type1.id != dbg_itype_none)
{
types_get_info(&type1, TI_GET_LENGTH, &scale2);
rtn.type = exp1.type;
}
else if (type2.id != dbg_itype_none)
{
types_get_info(&type2, TI_GET_LENGTH, &scale1);
rtn.type = exp2.type;
}
exp->un.binop.result = (types_extract_as_integer(&exp1) * (DWORD)scale1 -
types_extract_as_integer(&exp2) * (DWORD)scale2) / (DWORD)scale3;
break;
case EXP_OP_SEG:
rtn.type.id = dbg_itype_segptr;
rtn.type.module = 0;
be_cpu->build_addr(dbg_curr_thread->handle, &dbg_context, &rtn.addr,
types_extract_as_integer(&exp1), types_extract_as_integer(&exp2));
break;
case EXP_OP_LOR:
exp->un.binop.result = (types_extract_as_integer(&exp1) || types_extract_as_integer(&exp2));
break;
case EXP_OP_LAND:
exp->un.binop.result = (types_extract_as_integer(&exp1) && types_extract_as_integer(&exp2));
break;
case EXP_OP_OR:
exp->un.binop.result = (types_extract_as_integer(&exp1) | types_extract_as_integer(&exp2));
break;
case EXP_OP_AND:
exp->un.binop.result = (types_extract_as_integer(&exp1) & types_extract_as_integer(&exp2));
break;
case EXP_OP_XOR:
exp->un.binop.result = (types_extract_as_integer(&exp1) ^ types_extract_as_integer(&exp2));
break;
case EXP_OP_EQ:
exp->un.binop.result = (types_extract_as_integer(&exp1) == types_extract_as_integer(&exp2));
break;
case EXP_OP_GT:
exp->un.binop.result = (types_extract_as_integer(&exp1) > types_extract_as_integer(&exp2));
break;
case EXP_OP_LT:
exp->un.binop.result = (types_extract_as_integer(&exp1) < types_extract_as_integer(&exp2));
break;
case EXP_OP_GE:
exp->un.binop.result = (types_extract_as_integer(&exp1) >= types_extract_as_integer(&exp2));
break;
case EXP_OP_LE:
exp->un.binop.result = (types_extract_as_integer(&exp1) <= types_extract_as_integer(&exp2));
break;
case EXP_OP_NE:
exp->un.binop.result = (types_extract_as_integer(&exp1) != types_extract_as_integer(&exp2));
break;
case EXP_OP_SHL:
exp->un.binop.result = ((unsigned long)types_extract_as_integer(&exp1) << types_extract_as_integer(&exp2));
break;
case EXP_OP_SHR:
exp->un.binop.result = ((unsigned long)types_extract_as_integer(&exp1) >> types_extract_as_integer(&exp2));
break;
case EXP_OP_MUL:
exp->un.binop.result = (types_extract_as_integer(&exp1) * types_extract_as_integer(&exp2));
break;
case EXP_OP_DIV:
if (types_extract_as_integer(&exp2) == 0) RaiseException(DEBUG_STATUS_DIV_BY_ZERO, 0, 0, NULL);
exp->un.binop.result = (types_extract_as_integer(&exp1) / types_extract_as_integer(&exp2));
break;
case EXP_OP_REM:
if (types_extract_as_integer(&exp2) == 0) RaiseException(DEBUG_STATUS_DIV_BY_ZERO, 0, 0, NULL);
exp->un.binop.result = (types_extract_as_integer(&exp1) % types_extract_as_integer(&exp2));
break;
case EXP_OP_ARR:
if (!types_array_index(&exp1, types_extract_as_integer(&exp2), &rtn))
RaiseException(DEBUG_STATUS_CANT_DEREF, 0, 0, NULL);
break;
default: RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
}
break;
case EXPR_TYPE_UNOP:
rtn.cookie = DLV_HOST;
exp1 = expr_eval(exp->un.unop.exp1);
if (exp1.type.id == dbg_itype_none) RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
rtn.addr.Offset = (unsigned int)&exp->un.unop.result;
rtn.type.id = dbg_itype_signed_int;
rtn.type.module = 0;
switch (exp->un.unop.unop_type)
{
case EXP_OP_NEG:
exp->un.unop.result = -types_extract_as_integer(&exp1);
break;
case EXP_OP_NOT:
exp->un.unop.result = !types_extract_as_integer(&exp1);
break;
case EXP_OP_LNOT:
exp->un.unop.result = ~types_extract_as_integer(&exp1);
break;
case EXP_OP_DEREF:
if (!types_deref(&exp1, &rtn))
RaiseException(DEBUG_STATUS_BAD_TYPE, 0, 0, NULL);
break;
case EXP_OP_FORCE_DEREF:
rtn = exp1;
if (exp1.cookie == DLV_TARGET)
dbg_read_memory(memory_to_linear_addr(&exp1.addr), &rtn.addr.Offset, sizeof(rtn.addr.Offset));
break;
case EXP_OP_ADDR:
/* only do it on linear addresses */
if (exp1.addr.Mode != AddrModeFlat)
RaiseException(DEBUG_STATUS_CANT_DEREF, 0, 0, NULL);
exp->un.unop.result = (unsigned int)memory_to_linear_addr(&exp1.addr);
rtn.type = types_find_pointer(&exp1.type);
if (rtn.type.id == dbg_itype_none)
RaiseException(DEBUG_STATUS_CANT_DEREF, 0, 0, NULL);
break;
default: RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
}
break;
default:
WINE_FIXME("Unexpected expression (%d).\n", exp->type);
RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
break;
}
return rtn;
}
int expr_print(const struct expr* exp)
{
int i;
struct dbg_type type;
switch (exp->type)
{
case EXPR_TYPE_CAST:
WINE_FIXME("No longer supported (missing module base)\n");
dbg_printf("((");
switch (exp->un.cast.cast_to.type)
{
case type_expr_type_id:
type.module = 0;
type.id = exp->un.cast.cast_to.type;
types_print_type(&type, FALSE); break;
case type_expr_udt_class:
dbg_printf("class %s", exp->un.cast.cast_to.u.name); break;
case type_expr_udt_struct:
dbg_printf("struct %s", exp->un.cast.cast_to.u.name); break;
case type_expr_udt_union:
dbg_printf("union %s", exp->un.cast.cast_to.u.name); break;
case type_expr_enumeration:
dbg_printf("enum %s", exp->un.cast.cast_to.u.name); break;
}
for (i = 0; i < exp->un.cast.cast_to.deref_count; i++)
dbg_printf("*");
dbg_printf(")");
expr_print(exp->un.cast.expr);
dbg_printf(")");
break;
case EXPR_TYPE_INTVAR:
dbg_printf("$%s", exp->un.intvar.name);
break;
case EXPR_TYPE_U_CONST:
dbg_printf("%u", exp->un.u_const.value);
break;
case EXPR_TYPE_S_CONST:
dbg_printf("%d", exp->un.s_const.value);
break;
case EXPR_TYPE_STRING:
dbg_printf("\"%s\"", exp->un.string.str);
break;
case EXPR_TYPE_SYMBOL:
dbg_printf("%s" , exp->un.symbol.name);
break;
case EXPR_TYPE_PSTRUCT:
expr_print(exp->un.structure.exp1);
dbg_printf("->%s", exp->un.structure.element_name);
break;
case EXPR_TYPE_STRUCT:
expr_print(exp->un.structure.exp1);
dbg_printf(".%s", exp->un.structure.element_name);
break;
case EXPR_TYPE_CALL:
dbg_printf("%s(",exp->un.call.funcname);
for (i = 0; i < exp->un.call.nargs; i++)
{
expr_print(exp->un.call.arg[i]);
if (i != exp->un.call.nargs - 1) dbg_printf(", ");
}
dbg_printf(")");
break;
case EXPR_TYPE_BINOP:
dbg_printf("(");
expr_print(exp->un.binop.exp1);
switch (exp->un.binop.binop_type)
{
case EXP_OP_ADD: dbg_printf(" + "); break;
case EXP_OP_SUB: dbg_printf(" - "); break;
case EXP_OP_SEG: dbg_printf(":"); break;
case EXP_OP_LOR: dbg_printf(" || "); break;
case EXP_OP_LAND: dbg_printf(" && "); break;
case EXP_OP_OR: dbg_printf(" | "); break;
case EXP_OP_AND: dbg_printf(" & "); break;
case EXP_OP_XOR: dbg_printf(" ^ "); break;
case EXP_OP_EQ: dbg_printf(" == "); break;
case EXP_OP_GT: dbg_printf(" > "); break;
case EXP_OP_LT: dbg_printf(" < "); break;
case EXP_OP_GE: dbg_printf(" >= "); break;
case EXP_OP_LE: dbg_printf(" <= "); break;
case EXP_OP_NE: dbg_printf(" != "); break;
case EXP_OP_SHL: dbg_printf(" << "); break;
case EXP_OP_SHR: dbg_printf(" >> "); break;
case EXP_OP_MUL: dbg_printf(" * "); break;
case EXP_OP_DIV: dbg_printf(" / "); break;
case EXP_OP_REM: dbg_printf(" %% "); break;
case EXP_OP_ARR: dbg_printf("["); break;
default: break;
}
expr_print(exp->un.binop.exp2);
if (exp->un.binop.binop_type == EXP_OP_ARR) dbg_printf("]");
dbg_printf(")");
break;
case EXPR_TYPE_UNOP:
switch (exp->un.unop.unop_type)
{
case EXP_OP_NEG: dbg_printf("-"); break;
case EXP_OP_NOT: dbg_printf("!"); break;
case EXP_OP_LNOT: dbg_printf("~"); break;
case EXP_OP_DEREF: dbg_printf("*"); break;
case EXP_OP_ADDR: dbg_printf("&"); break;
}
expr_print(exp->un.unop.exp1);
break;
default:
WINE_FIXME("Unexpected expression (%u).\n", exp->type);
RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
break;
}
return TRUE;
}
struct expr* expr_clone(const struct expr* exp, BOOL *local_binding)
{
int i;
struct expr* rtn;
rtn = HeapAlloc(GetProcessHeap(), 0, sizeof(struct expr));
/*
* First copy the contents of the expression itself.
*/
*rtn = *exp;
switch (exp->type)
{
case EXPR_TYPE_CAST:
rtn->un.cast.expr = expr_clone(exp->un.cast.expr, local_binding);
break;
case EXPR_TYPE_INTVAR:
rtn->un.intvar.name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(exp->un.intvar.name) + 1), exp->un.intvar.name);
break;
case EXPR_TYPE_U_CONST:
case EXPR_TYPE_S_CONST:
break;
case EXPR_TYPE_STRING:
rtn->un.string.str = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(exp->un.string.str) + 1), exp->un.string.str);
break;
case EXPR_TYPE_SYMBOL:
rtn->un.symbol.name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(exp->un.symbol.name) + 1), exp->un.symbol.name);
if (local_binding && symbol_is_local(exp->un.symbol.name))
*local_binding = TRUE;
break;
case EXPR_TYPE_PSTRUCT:
case EXPR_TYPE_STRUCT:
rtn->un.structure.exp1 = expr_clone(exp->un.structure.exp1, local_binding);
rtn->un.structure.element_name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(exp->un.structure.element_name) + 1), exp->un.structure.element_name);
break;
case EXPR_TYPE_CALL:
for (i = 0; i < exp->un.call.nargs; i++)
{
rtn->un.call.arg[i] = expr_clone(exp->un.call.arg[i], local_binding);
}
rtn->un.call.funcname = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(exp->un.call.funcname) + 1), exp->un.call.funcname);
break;
case EXPR_TYPE_BINOP:
rtn->un.binop.exp1 = expr_clone(exp->un.binop.exp1, local_binding);
rtn->un.binop.exp2 = expr_clone(exp->un.binop.exp2, local_binding);
break;
case EXPR_TYPE_UNOP:
rtn->un.unop.exp1 = expr_clone(exp->un.unop.exp1, local_binding);
break;
default:
WINE_FIXME("Unexpected expression (%u).\n", exp->type);
RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
break;
}
return rtn;
}
/*
* Recursively go through an expression tree and free all memory associated
* with it.
*/
int expr_free(struct expr* exp)
{
int i;
switch (exp->type)
{
case EXPR_TYPE_CAST:
expr_free(exp->un.cast.expr);
break;
case EXPR_TYPE_INTVAR:
HeapFree(GetProcessHeap(), 0, (char*)exp->un.intvar.name);
break;
case EXPR_TYPE_U_CONST:
case EXPR_TYPE_S_CONST:
break;
case EXPR_TYPE_STRING:
HeapFree(GetProcessHeap(), 0, (char*)exp->un.string.str);
break;
case EXPR_TYPE_SYMBOL:
HeapFree(GetProcessHeap(), 0, (char*)exp->un.symbol.name);
break;
case EXPR_TYPE_PSTRUCT:
case EXPR_TYPE_STRUCT:
expr_free(exp->un.structure.exp1);
HeapFree(GetProcessHeap(), 0, (char*)exp->un.structure.element_name);
break;
case EXPR_TYPE_CALL:
for (i = 0; i < exp->un.call.nargs; i++)
{
expr_free(exp->un.call.arg[i]);
}
HeapFree(GetProcessHeap(), 0, (char*)exp->un.call.funcname);
break;
case EXPR_TYPE_BINOP:
expr_free(exp->un.binop.exp1);
expr_free(exp->un.binop.exp2);
break;
case EXPR_TYPE_UNOP:
expr_free(exp->un.unop.exp1);
break;
default:
WINE_FIXME("Unexpected expression (%u).\n", exp->type);
RaiseException(DEBUG_STATUS_INTERNAL_ERROR, 0, 0, NULL);
break;
}
HeapFree(GetProcessHeap(), 0, exp);
return TRUE;
}
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