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fteqw/engine/qclib/qcdecomp.c
Mark Olsen b3b3a7a83a Renamed vector to _vector to avoid name clashes on Altivec systems. 
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@1623 fc73d0e0-1445-4013-8a0c-d673dee63da5
2005-11-29 13:30:20 +00:00

986 lines
26 KiB
C
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#ifndef MINIMAL
#include "progsint.h"
#include "setjmp.h"
#define MAX_PARMS 8
typedef struct QCC_type_s
{
etype_t type;
struct QCC_type_s *next;
// function types are more complex
struct QCC_type_s *aux_type; // return type or field type
int num_parms; // -1 = variable args
// struct QCC_type_s *parm_types[MAX_PARMS]; // only [num_parms] allocated
int ofs; //inside a structure.
int size;
char *name;
} QCC_type_t;
extern QCC_type_t *qcc_typeinfo;
extern int numtypeinfos;
extern int maxtypeinfos;
extern QCC_type_t *type_void;// = {ev_void/*, &def_void*/};
extern QCC_type_t *type_string;// = {ev_string/*, &def_string*/};
extern QCC_type_t *type_float;// = {ev_float/*, &def_float*/};
extern QCC_type_t *type_vector;// = {ev_vector/*, &def_vector*/};
extern QCC_type_t *type_entity;// = {ev_entity/*, &def_entity*/};
extern QCC_type_t *type_field;// = {ev_field/*, &def_field*/};
extern QCC_type_t *type_function;// = {ev_function/*, &def_function*/,NULL,&type_void};
// type_function is a void() function used for state defs
extern QCC_type_t *type_pointer;// = {ev_pointer/*, &def_pointer*/};
extern QCC_type_t *type_integer;// = {ev_integer/*, &def_integer*/};
extern QCC_type_t *type_floatfield;// = {ev_field/*, &def_field*/, NULL, &type_float};
QCC_type_t *QCC_PR_NewType (char *name, int basictype);
jmp_buf decompilestatementfailure;
#if 0
pbool Decompile(progfuncs_t *progfuncs, char *fname)
{
return false;
}
#else
QCC_type_t **ofstype;
qbyte *ofsflags;
int SafeOpenWrite (char *filename, int maxsize);
void SafeWrite(int hand, void *buf, long count);
int SafeSeek(int hand, int ofs, int mode);
void SafeClose(int hand);
void VARGS writes(int hand, char *msg, ...)
{
va_list va;
char buf[4192];
va_start(va, msg);
Q_vsnprintf (buf,sizeof(buf)-1, msg, va);
va_end(va);
SafeWrite(hand, buf, strlen(buf));
};
char *PR_UglyValueString (etype_t type, eval_t *val);
ddef16_t *ED_GlobalAtOfs16 (progfuncs_t *progfuncs, int ofs);
char *VarAtOfs(progfuncs_t *progfuncs, int ofs)
{
static char buf [4192];
ddef16_t *def;
int typen;
if (ofsflags[ofs]&8)
def = ED_GlobalAtOfs16(progfuncs, ofs);
else
def = NULL;
if (!def)
{
if (ofsflags[ofs]&3)
{
if (ofstype[ofs])
sprintf(buf, "_v_%s_%i", ofstype[ofs]->name, ofs);
else
sprintf(buf, "_v_%i", ofs);
}
else
{
if (ofstype[ofs])
{
typen = ofstype[ofs]->type;
goto evaluateimmediate;
}
else
sprintf(buf, "_c_%i", ofs);
}
return buf;
}
if (!def->s_name[progfuncs->stringtable] || !strcmp(progfuncs->stringtable+def->s_name, "IMMEDIATE"))
{
if (current_progstate->types)
typen = current_progstate->types[def->type & ~DEF_SHARED].type;
else
typen = def->type & ~(DEF_SHARED|DEF_SAVEGLOBAL);
evaluateimmediate:
// return PR_UglyValueString(def->type, (eval_t *)&current_progstate->globals[def->ofs]);
switch(typen)
{
case ev_float:
sprintf(buf, "%f", G_FLOAT(ofs));
return buf;
case ev_vector:
sprintf(buf, "\'%f %f %f\'", G_FLOAT(ofs), G_FLOAT(ofs+1), G_FLOAT(ofs+2));
return buf;
case ev_string:
{
char *s, *s2;
s = buf;
*s++ = '\"';
s2 = pr_strings+G_INT(ofs);
if (s2)
while(*s2)
{
if (*s2 == '\n')
{
*s++ = '\\';
*s++ = 'n';
s2++;
}
else if (*s2 == '\"')
{
*s++ = '\\';
*s++ = '\"';
s2++;
}
else if (*s2 == '\t')
{
*s++ = '\\';
*s++ = 't';
s2++;
}
else
*s++=*s2++;
}
*s++ = '\"';
*s++ = '\0';
}
return buf;
case ev_pointer:
sprintf(buf, "_c_pointer_%i", ofs);
return buf;
default:
sprintf(buf, "_c_%i", ofs);
return buf;
}
}
return def->s_name+progfuncs->stringtable;
}
int file;
int ImmediateReadLater(progfuncs_t *progfuncs, progstate_t *progs, unsigned int ofs, int firstst)
{
dstatement16_t *st;
if (ofsflags[ofs] & 8)
return false; //this is a global/local/pramater, not a temp
if (!(ofsflags[ofs] & 3))
return false; //this is a constant.
for (st = &((dstatement16_t*)progs->statements)[firstst]; ; st++,firstst++)
{ //if written, return false, if read, return true.
if (st->op >= OP_CALL0 && st->op <= OP_CALL8)
{
if (ofs == OFS_RETURN)
return false;
if (ofs < OFS_PARM0 + 3*((unsigned int)st->op - OP_CALL0))
return true;
}
else if (pr_opcodes[st->op].associative == ASSOC_RIGHT)
{
if (ofs == st->b)
return false;
if (ofs == st->a)
return true;
}
else
{
if (st->a == ofs)
return true;
if (st->b == ofs)
return true;
if (st->c == ofs)
return false;
}
if (st->op == OP_DONE || st->op == OP_RETURN) //we missed our chance. (return/done ends any code coherancy).
return false;
}
return false;
}
int ProductReadLater(progfuncs_t *progfuncs, progstate_t *progs, int stnum)
{
dstatement16_t *st;
st = &((dstatement16_t*)progs->statements)[stnum];
if (pr_opcodes[st->op].priority == -1)
{
if (st->op >= OP_CALL0 && st->op <= OP_CALL7)
return ImmediateReadLater(progfuncs, progs, OFS_RETURN, stnum+1);
return false;//these don't have products...
}
if (pr_opcodes[st->op].associative == ASSOC_RIGHT)
return ImmediateReadLater(progfuncs, progs, st->b, stnum+1);
else
return ImmediateReadLater(progfuncs, progs, st->c, stnum+1);
}
void WriteStatementProducingOfs(progfuncs_t *progfuncs, progstate_t *progs, int lastnum, int firstpossible, int ofs) //recursive, works backwards
{
int i;
dstatement16_t *st;
ddef16_t *def;
if (ofs == 0)
longjmp(decompilestatementfailure, 1);
for (; lastnum >= firstpossible; lastnum--)
{
st = &((dstatement16_t*)progs->statements)[lastnum];
if (st->op >= OP_CALL0 && st->op < OP_CALL7)
{
if (ofs != OFS_RETURN)
continue;
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->a);
writes(file, "(");
for (i = 0; i < st->op - OP_CALL0; i++)
{
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, OFS_PARM0 + i*3);
if (i != st->op - OP_CALL0-1)
writes(file, ", ");
}
writes(file, ")");
return;
}
else if (pr_opcodes[st->op].associative == ASSOC_RIGHT)
{
if (st->b != ofs)
continue;
if (!ImmediateReadLater(progfuncs, progs, st->b, lastnum+1))
{
writes(file, "(");
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->b);
writes(file, " ");
writes(file, pr_opcodes[st->op].name);
writes(file, " ");
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->a);
writes(file, ")");
return;
}
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->a);
return;
}
else
{
if (st->c != ofs)
continue;
if (!ImmediateReadLater(progfuncs, progs, st->c, lastnum+1))
{
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->c);
writes(file, " = ");
}
writes(file, "(");
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->a);
if (!strcmp(pr_opcodes[st->op].name, "."))
writes(file, pr_opcodes[st->op].name); //extra spaces around .s are ugly.
else
{
writes(file, " ");
writes(file, pr_opcodes[st->op].name);
writes(file, " ");
}
WriteStatementProducingOfs(progfuncs, progs, lastnum-1, firstpossible, st->b);
writes(file, ")");
return;
}
}
def = ED_GlobalAtOfs16(progfuncs, ofs);
if (def)
{
if (!strcmp(def->s_name+progfuncs->stringtable, "IMMEDIATE"))
writes(file, "%s", VarAtOfs(progfuncs, ofs));
else
writes(file, "%s", progfuncs->stringtable+def->s_name);
}
else
writes(file, "%s", VarAtOfs(progfuncs, ofs));
// longjmp(decompilestatementfailure, 1);
}
int WriteStatement(progfuncs_t *progfuncs, progstate_t *progs, int stnum, int firstpossible)
{
int count, skip;
dstatement16_t *st;
st = &((dstatement16_t*)progs->statements)[stnum];
switch(st->op)
{
case OP_IFNOT:
count = (signed short)st->b;
writes(file, "if (");
WriteStatementProducingOfs(progfuncs, progs, stnum, firstpossible, st->a);
writes(file, ")\r\n");
writes(file, "{\r\n");
firstpossible = stnum+1;
count--;
stnum++;
while(count)
{
if (ProductReadLater(progfuncs, progs, stnum))
{
count--;
stnum++;
continue;
}
skip = WriteStatement(progfuncs, progs, stnum, firstpossible);
count-=skip;
stnum+=skip;
}
writes(file, "}\r\n");
st = &((dstatement16_t*)progs->statements)[stnum];
if (st->op == OP_GOTO)
{
count = (signed short)st->b;
count--;
stnum++;
writes(file, "else\r\n");
writes(file, "{\r\n");
while(count)
{
if (ProductReadLater(progfuncs, progs, stnum))
{
count--;
stnum++;
continue;
}
skip = WriteStatement(progfuncs, progs, stnum, firstpossible);
count-=skip;
stnum+=skip;
}
writes(file, "}\r\n");
}
break;
case OP_IF:
longjmp(decompilestatementfailure, 1);
break;
case OP_GOTO:
longjmp(decompilestatementfailure, 1);
break;
case OP_RETURN:
case OP_DONE:
if (st->a)
WriteStatementProducingOfs(progfuncs, progs, stnum-1, firstpossible, st->a);
break;
case OP_CALL0:
case OP_CALL1:
case OP_CALL2:
case OP_CALL3:
case OP_CALL4:
case OP_CALL5:
case OP_CALL6:
case OP_CALL7:
WriteStatementProducingOfs(progfuncs, progs, stnum, firstpossible, OFS_RETURN);
writes(file, ";\r\n");
break;
default:
if (pr_opcodes[st->op].associative == ASSOC_RIGHT)
WriteStatementProducingOfs(progfuncs, progs, stnum, firstpossible, st->b);
else
WriteStatementProducingOfs(progfuncs, progs, stnum, firstpossible, st->c);
writes(file, ";\r\n");
break;
}
return 1;
}
void WriteAsmStatements(progfuncs_t *progfuncs, progstate_t *progs, int num, int f, char *functionname)
{
int stn = progs->functions[num].first_statement;
QCC_opcode_t *op;
dstatement16_t *st = NULL;
eval_t *v;
ddef16_t *def;
int ofs,i;
int fileofs;
if (!functionname && stn<0)
{
//we wrote this one...
return;
}
if (stn>=0)
{
for (stn = progs->functions[num].first_statement; stn < (signed int)pr_progs->numstatements; stn++)
{
st = &((dstatement16_t*)progs->statements)[stn];
if (st->op == OP_DONE || st->op == OP_RETURN)
{
if (!st->a)
writes(f, "void(");
else if (ofstype[st->a])
{
writes(f, "%s", ofstype[st->a]->name);
writes(f, "(");
}
else
writes(f, "function(");
break;
}
}
st=NULL;
stn = progs->functions[num].first_statement;
}
else
writes(f, "function(");
for (ofs = progs->functions[num].parm_start, i = 0; i < progs->functions[num].numparms; i++, ofs+=progs->functions[num].parm_size[i])
{
ofsflags[ofs] |= 4;
def = ED_GlobalAtOfs16(progfuncs, ofs);
if (def && stn>=0)
{
if (st)
writes(f, ", ");
st = (void *)0xffff;
if (!def->s_name[progfuncs->stringtable])
{
char mem[64];
sprintf(mem, "_p_%i", def->ofs);
def->s_name = (char*)malloc(strlen(mem)+1)-progfuncs->stringtable;
strcpy(def->s_name+progfuncs->stringtable, mem);
}
if (current_progstate->types)
writes(f, "%s %s", current_progstate->types[def->type&~(DEF_SHARED|DEF_SAVEGLOBAL)].name, def->s_name);
else
switch(def->type&~(DEF_SHARED|DEF_SAVEGLOBAL))
{
case ev_string:
writes(f, "%s %s", "string", progfuncs->stringtable+def->s_name);
break;
case ev_float:
writes(f, "%s %s", "float", progfuncs->stringtable+def->s_name);
break;
case ev_entity:
writes(f, "%s %s", "entity", progfuncs->stringtable+def->s_name);
break;
case ev_vector:
writes(f, "%s %s", "vector", progfuncs->stringtable+def->s_name);
break;
default:
writes(f, "%s %s", "randomtype", progfuncs->stringtable+def->s_name);
break;
}
}
}
for (ofs = progs->functions[num].parm_start+progs->functions[num].numparms, i = progs->functions[num].numparms; i < progs->functions[num].locals; i++, ofs+=1)
ofsflags[ofs] |= 4;
if (!progfuncs->stringtable[progs->functions[num].s_name])
{
char mem[64];
if (!functionname)
{
sprintf(mem, "_bi_%i", num);
progs->functions[num].s_name = (char*)malloc(strlen(mem)+1)-progfuncs->stringtable;
strcpy(progs->functions[num].s_name+progfuncs->stringtable, mem);
}
else
{
progs->functions[num].s_name = (char*)malloc(strlen(functionname)+1)-progfuncs->stringtable;
strcpy(progs->functions[num].s_name+progfuncs->stringtable, functionname);
}
}
writes(f, ") %s", progfuncs->stringtable+progs->functions[num].s_name);
if (stn < 0)
{
stn*=-1;
writes(f, " = #%i;\r\n", stn);
/*
for (ofs = progs->functions[num].parm_start, i = 0; i < progs->functions[num].numparms; i++, ofs+=progs->functions[num].parm_size[i])
{
def = ED_GlobalAtOfs16(progfuncs, ofs);
if (def)
{
def->ofs = 0xffff;
if (progs->types)
{
if (progs->types[def->type & ~(DEF_SHARED|DEF_SAVEGLOBAL)].type == ev_vector)
{
def = ED_GlobalAtOfs16(progfuncs, ofs);
def->ofs = 0xffff;
def = ED_GlobalAtOfs16(progfuncs, ofs+1);
def->ofs = 0xffff;
def = ED_GlobalAtOfs16(progfuncs, ofs+2);
def->ofs = 0xffff;
}
}
else if ((def->type & (~(DEF_SHARED|DEF_SAVEGLOBAL))) == ev_vector)
{
def = ED_GlobalAtOfs16(progfuncs, ofs);
def->ofs = 0xffff;
def = ED_GlobalAtOfs16(progfuncs, ofs+1);
def->ofs = 0xffff;
def = ED_GlobalAtOfs16(progfuncs, ofs+2);
def->ofs = 0xffff;
}
}
}
*/
return;
}
if (functionname) //parsing defs
{
writes(f, ";\r\n");
return;
}
fileofs = SafeSeek(f, 0, SEEK_CUR);
if (setjmp(decompilestatementfailure))
{
writes(f, "*/\r\n");
// SafeSeek(f, fileofs, SEEK_SET);
writes(f, " = asm {\r\n");
stn = progs->functions[num].first_statement;
for (ofs = progs->functions[num].parm_start+progs->functions[num].numparms, i = progs->functions[num].numparms; i < progs->functions[num].locals; i++, ofs+=1)
{
def = ED_GlobalAtOfs16(progfuncs, ofs);
if (def)
{
v = (eval_t *)&((int *)progs->globals)[def->ofs];
if (current_progstate->types)
writes(f, "\tlocal %s %s;\r\n", current_progstate->types[def->type&~(DEF_SHARED|DEF_SAVEGLOBAL)].name, def->s_name);
else
{
if (!progfuncs->stringtable[def->s_name])
{
char mem[64];
sprintf(mem, "_l_%i", def->ofs);
def->s_name = (char*)malloc(strlen(mem)+1)-progfuncs->stringtable;
strcpy(def->s_name+progfuncs->stringtable, mem);
}
switch(def->type&~(DEF_SHARED|DEF_SAVEGLOBAL))
{
case ev_string:
writes(f, "\tlocal %s %s;\r\n", "string", progfuncs->stringtable+def->s_name);
break;
case ev_float:
writes(f, "\tlocal %s %s;\r\n", "float", progfuncs->stringtable+def->s_name);
break;
case ev_entity:
writes(f, "\tlocal %s %s;\r\n", "entity", progfuncs->stringtable+def->s_name);
break;
case ev_vector:
if (v->_vector[0] || v->_vector[1] || v->_vector[2])
writes(f, "\tlocal vector %s = '%f %f %f';\r\n", progfuncs->stringtable+def->s_name, v->_vector[0], v->_vector[1], v->_vector[2]);
else
writes(f, "\tlocal %s %s;\r\n", "vector", progfuncs->stringtable+def->s_name);
ofs+=2; //skip floats;
break;
default:
writes(f, "\tlocal %s %s;\r\n", "randomtype", progfuncs->stringtable+def->s_name);
break;
}
}
}
}
while(1)
{
st = &((dstatement16_t*)progs->statements)[stn];
if (!st->op) //end of function statement!
break;
op = &pr_opcodes[st->op];
writes(f, "\t%s", op->opname);
if (op->priority==-1&&op->associative==ASSOC_RIGHT) //last param is a goto
{
if (op->type_b == &type_void)
{
if (st->a)
writes(f, " %i", (signed short)st->a);
}
else if (op->type_c == &type_void)
{
if (st->a)
writes(f, " %s", VarAtOfs(progfuncs, st->a));
if (st->b)
writes(f, " %i", (signed short)st->b);
}
else
{
if (st->a)
writes(f, " %s", VarAtOfs(progfuncs, st->a));
if (st->b)
writes(f, " %s", VarAtOfs(progfuncs, st->b));
if (st->c) //rightness means it uses a as c
writes(f, " %i", (signed short)st->c);
}
}
else
{
if (st->a)
{
if (op->type_a == NULL)
writes(f, " %i", (signed short)st->a);
else
writes(f, " %s", VarAtOfs(progfuncs, st->a));
}
if (st->b)
{
if (op->type_b == NULL)
writes(f, " %i", (signed short)st->b);
else
writes(f, " %s", VarAtOfs(progfuncs, st->b));
}
if (st->c && op->associative != ASSOC_RIGHT) //rightness means it uses a as c
{
if (op->type_c == NULL)
writes(f, " %i", (signed short)st->c);
else
writes(f, " %s", VarAtOfs(progfuncs, st->c));
}
}
writes(f, ";\r\n");
stn++;
}
}
else
{
if (!strcmp(progfuncs->stringtable+progs->functions[num].s_name, "SUB_Remove"))
file = 0;
file = f;
writes(f, "/*\r\n");
writes(f, " =\r\n{\r\n");
for (ofs = progs->functions[num].parm_start+progs->functions[num].numparms, i = progs->functions[num].numparms; i < progs->functions[num].locals; i++, ofs+=1)
{
def = ED_GlobalAtOfs16(progfuncs, ofs);
if (def)
{
v = (eval_t *)&((int *)progs->globals)[def->ofs];
if (current_progstate->types)
writes(f, "\tlocal %s %s;\r\n", current_progstate->types[def->type&~(DEF_SHARED|DEF_SAVEGLOBAL)].name, def->s_name);
else
{
if (!def->s_name[progfuncs->stringtable])
{
char mem[64];
sprintf(mem, "_l_%i", def->ofs);
def->s_name = (char*)malloc(strlen(mem)+1)-progfuncs->stringtable;
strcpy(def->s_name+progfuncs->stringtable, mem);
}
switch(def->type&~(DEF_SHARED|DEF_SAVEGLOBAL))
{
case ev_string:
writes(f, "\tlocal %s %s;\r\n", "string", progfuncs->stringtable+def->s_name);
break;
case ev_float:
writes(f, "\tlocal %s %s;\r\n", "float", progfuncs->stringtable+def->s_name);
break;
case ev_entity:
writes(f, "\tlocal %s %s;\r\n", "entity", progfuncs->stringtable+def->s_name);
break;
case ev_vector:
if (v->_vector[0] || v->_vector[1] || v->_vector[2])
writes(f, "\tlocal vector %s = '%f %f %f';\r\n", def->s_name, v->_vector[0], v->_vector[1], v->_vector[2]);
else
writes(f, "\tlocal %s %s;\r\n", "vector",progfuncs->stringtable+def->s_name);
ofs+=2; //skip floats;
break;
default:
writes(f, "\tlocal %s %s;\r\n", "randomtype", progfuncs->stringtable+def->s_name);
break;
}
}
}
}
for (stn = progs->functions[num].first_statement; stn < (signed int)pr_progs->numstatements; stn++)
{
if (ProductReadLater(progfuncs, progs, stn))
continue;
st = &((dstatement16_t*)progs->statements)[stn];
if (!st->op)
break;
WriteStatement(progfuncs, progs, stn, progs->functions[num].first_statement);
}
longjmp(decompilestatementfailure, 1);
}
writes(f, "};\r\n");
}
void FigureOutTypes(progfuncs_t *progfuncs)
{
ddef16_t *def;
QCC_opcode_t *op;
unsigned int i,p;
dstatement16_t *st;
int parmofs[8];
ofstype = realloc(ofstype, sizeof(*ofstype)*65535);
ofsflags = realloc(ofsflags, sizeof(*ofsflags)*65535);
maxtypeinfos=256;
qcc_typeinfo = (void *)realloc(qcc_typeinfo, sizeof(QCC_type_t)*maxtypeinfos);
numtypeinfos = 0;
memset(ofstype, 0, sizeof(*ofstype)*65535);
memset(ofsflags, 0, sizeof(*ofsflags)*65535);
type_void = QCC_PR_NewType("void", ev_void);
type_string = QCC_PR_NewType("string", ev_string);
type_float = QCC_PR_NewType("float", ev_float);
type_vector = QCC_PR_NewType("vector", ev_vector);
type_entity = QCC_PR_NewType("entity", ev_entity);
type_field = QCC_PR_NewType("field", ev_field);
type_function = QCC_PR_NewType("function", ev_function);
type_pointer = QCC_PR_NewType("pointer", ev_pointer);
type_integer = QCC_PR_NewType("integer", ev_integer);
// type_variant = QCC_PR_NewType("__variant", ev_variant);
type_floatfield = QCC_PR_NewType("fieldfloat", ev_field);
type_floatfield->aux_type = type_float;
type_pointer->aux_type = QCC_PR_NewType("pointeraux", ev_float);
type_function->aux_type = type_void;
for (i = 0,st = pr_statements16; i < pr_progs->numstatements; i++,st++)
{
op = &pr_opcodes[st->op];
if (st->op >= OP_CALL1 && st->op <= OP_CALL8)
{
for (p = 0; p < (unsigned int)st->op-OP_CALL0; p++)
{
ofstype[parmofs[p]] = ofstype[OFS_PARM0+p*3];
}
}
else if (op->associative == ASSOC_RIGHT)
{ //assignment
ofsflags[st->b] |= 1;
if (st->b >= OFS_PARM0 && st->b < RESERVED_OFS)
parmofs[(st->b-OFS_PARM0)/3] = st->a;
// if (st->op != OP_STORE_F || st->b>RESERVED_OFS) //optimising compilers fix the OP_STORE_V, it's the storef that becomes meaningless (this is the only time that we need this sort of info anyway)
{
if (op->type_c && op->type_c != &type_void)
ofstype[st->a] = *op->type_c;
if (op->type_b && op->type_b != &type_void)
ofstype[st->b] = *op->type_b;
}
}
else if (op->type_c)
{
ofsflags[st->c] |= 2;
if (st->c >= OFS_PARM0 && st->b < RESERVED_OFS) //too complicated
parmofs[(st->b-OFS_PARM0)/3] = 0;
// if (st->op != OP_STORE_F || st->b>RESERVED_OFS) //optimising compilers fix the OP_STORE_V, it's the storef that becomes meaningless (this is the only time that we need this sort of info anyway)
{
if (op->type_a && op->type_a != &type_void)
ofstype[st->a] = *op->type_a;
if (op->type_b && op->type_b != &type_void)
ofstype[st->b] = *op->type_b;
if (op->type_c && op->type_c != &type_void)
ofstype[st->c] = *op->type_c;
}
}
}
for (i=0 ; i<pr_progs->numglobaldefs ; i++)
{
def = &pr_globaldefs16[i];
ofsflags[def->ofs] |= 8;
switch(def->type)
{
case ev_float:
ofstype[def->ofs] = type_float;
break;
case ev_string:
ofstype[def->ofs] = type_string;
break;
case ev_vector:
ofstype[def->ofs] = type_vector;
break;
default:
break;
}
}
}
pbool Decompile(progfuncs_t *progfuncs, char *fname)
{
extern progfuncs_t *qccprogfuncs;
unsigned int i;
unsigned int fld=0;
eval_t *v;
// char *filename;
int f, type;
progstate_t progs, *op;
qccprogfuncs = progfuncs;
op=current_progstate;
if (!PR_ReallyLoadProgs(progfuncs, fname, -1, &progs, false))
{
return false;
}
f=SafeOpenWrite("qcdtest/defs.qc", 1024*512);
writes(f, "//Decompiled code can contain little type info.\r\n#define NOWARNINGS\r\n");
FigureOutTypes(progfuncs);
for (i = 1; i < progs.progs->numglobaldefs; i++)
{
if (!strcmp(progfuncs->stringtable+pr_globaldefs16[i].s_name, "IMMEDIATE"))
continue;
if (ofsflags[pr_globaldefs16[i].ofs] & 4)
continue; //this is a local.
if (current_progstate->types)
type = progs.types[pr_globaldefs16[i].type & ~(DEF_SHARED|DEF_SAVEGLOBAL)].type;
else
type = pr_globaldefs16[i].type & ~(DEF_SHARED|DEF_SAVEGLOBAL);
v = (eval_t *)&((int *)progs.globals)[pr_globaldefs16[i].ofs];
if (!progfuncs->stringtable[pr_globaldefs16[i].s_name])
{
char mem[64];
if (ofsflags[pr_globaldefs16[i].ofs] & 3)
{
ofsflags[pr_globaldefs16[i].ofs] &= ~8;
continue; //this is a constant...
}
sprintf(mem, "_g_%i", pr_globaldefs16[i].ofs);
pr_globaldefs16[i].s_name = (char*)malloc(strlen(mem)+1)-progfuncs->stringtable;
strcpy(pr_globaldefs16[i].s_name+progfuncs->stringtable, mem);
}
switch(type)
{
case ev_void:
writes(f, "void %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_string:
if (v->string && *(pr_strings+v->_int))
writes(f, "string %s = \"%s\";\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name, pr_strings+v->_int);
else
writes(f, "string %s;\r\n", pr_globaldefs16[i].s_name);
break;
case ev_float:
if (v->_float)
writes(f, "float %s = %f;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name, v->_float);
else
writes(f, "float %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_vector:
if (v->_vector[0] || v->_vector[1] || v->_vector[2])
writes(f, "vector %s = '%f %f %f';\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name, v->_vector[0], v->_vector[1], v->_vector[2]);
else
writes(f, "vector %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
i+=3;//skip the floats
break;
case ev_entity:
writes(f, "entity %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_field:
//wierd
fld++;
if (!v->_int)
writes(f, "var ");
switch(pr_fielddefs16[fld].type)
{
case ev_string:
writes(f, ".string %s;", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_float:
writes(f, ".float %s;", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_vector:
writes(f, ".float %s;", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_entity:
writes(f, ".float %s;", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_function:
writes(f, ".void() %s;", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
default:
writes(f, "field %s;", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
}
if (v->_int)
writes(f, "/* %i */", v->_int);
writes(f, "\r\n");
break;
case ev_function:
//wierd
WriteAsmStatements(progfuncs, &progs, ((int *)progs.globals)[pr_globaldefs16[i].ofs], f, pr_globaldefs16[i].s_name+progfuncs->stringtable);
break;
case ev_pointer:
writes(f, "pointer %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_integer:
writes(f, "integer %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_union:
writes(f, "union %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
case ev_struct:
writes(f, "struct %s;\r\n", progfuncs->stringtable+pr_globaldefs16[i].s_name);
break;
default:
break;
}
}
for (i = 0; i < progs.progs->numfunctions; i++)
{
WriteAsmStatements(progfuncs, &progs, i, f, NULL);
}
SafeClose(f);
current_progstate=op;
return true;
}
#endif
#endif
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