nzp-team/fteqw
0
0
Fork 0
mirror of https://github.com/nzp-team/fteqw.git synced 2024-12-02 00:21:48 +00:00
Code Issues Projects Releases Packages Wiki Activity
fteqw/engine/qclib/decomp.c
Spoike 559144cb05 Updated font code for freecs's benefit. 
added cl_iDrive cvar.
tried to solve invalid server address errors.
fixed envmap+screenshot_cubemap commands (they write slightly different cubemaps).
rework server favourites a little, to avoid conflicts with other engines.
fix legacy rtlights on certain maps.
added 'rgbgen entitylighting' for lighting with colormod support.
decompiler should cope with more instructions now. pretty much just switch opcodes that are bugged now.
implemented a couple of joint types into the bullet plugin. still useless though.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5180 fc73d0e0-1445-4013-8a0c-d673dee63da5
2017-12-09 21:22:46 +00:00

3147 lines
78 KiB
C
Raw Blame History

#include "qcc.h"
//#include "decomp.h"
//This file is derived from frikdec, but has some extra tweaks to make it more friendly with fte's compiler/opcodes (its not perfect though)
//FIXME: there's still a load of mallocs, so we don't allow this more than once per process.
//convert vector terms into floats when its revealed that they're using vector ops and not floats
//FIXME: fteqcc converts do {} while(1); into a goto -1; which is a really weeeird construct.
#if defined(_WIN32) || defined(__DJGPP__)
#include <malloc.h>
#else
#include <alloca.h>
#endif
#undef printf
#define printf GUIprintf
#define OP_MARK_END_DO 0x00010000 //do{
#define OP_MARK_END_ELSE 0x00000400 //}
#define MAX_REGS 65536
#define dstatement_t QCC_dstatement32_t
#define statements destatements
#define functions defunctions
#define strings destrings
static dstatement_t *statements;
static float *pr_globals;
static char *strings;
static QCC_ddef32_t *globals;
static dfunction_t *functions;
static int ofs_return;
static int ofs_parms[MAX_PARMS];
static int ofs_size = 3;
static QCC_ddef_t *globalofsdef[MAX_REGS];
//forward declarations.
QCC_ddef_t *GetField(const char *name);
#include <stdio.h>
/*int QC_snprintfz(char *buffer, size_t maxlen, const char *format, ...)
{
int p;
va_list argptr;
if (!maxlen)
return -1;
va_start (argptr, format);
p = _vsnprintf (buffer, maxlen, format,argptr);
va_end (argptr);
buffer[maxlen-1] = 0;
return p;
}*/
extern QCC_opcode_t pr_opcodes [];
int endofsystemfields;
int debug_offs = 0;
int assumeglobals = 0; //unknown globals are assumed to be actual globals and NOT unlocked temps
int assumelocals = 0; //unknown locals are assumed to be actual locals and NOT locked temps
vfile_t *Decompileofile;
vfile_t *Decompileprogssrc;
vfile_t *Decompileprofile;
char **DecompileProfiles;//[MAX_FUNCTIONS];
static char **rettypes;//[MAX_FUNCTIONS];
extern int quakeforgeremap[];
char *type_names[] =
{
"void",
"string",
"float",
"vector",
"entity",
"ev_field",
"void()",
"ev_pointer",
"int",
"__variant",
"ev_struct",
"ev_union",
"ev_accessor",
"ev_quat",
"ev_uinteger"
};
char *typetoname(QCC_type_t *type)
{
return type->name;
}
char *temp_type (int temp, dstatement_t *start, dfunction_t *df)
{
int i;
dstatement_t *stat;
stat = start - 1;
// determine the type of a temp
while(stat > statements)
{
if (temp == stat->a)
return typetoname(*pr_opcodes[stat->op].type_a);
else if (temp == stat->b)
return typetoname(*pr_opcodes[stat->op].type_b);
else if (temp == stat->c)
return typetoname(*pr_opcodes[stat->op].type_c);
stat--;
}
// method 2
// find a call to this function
for (i = 0; i < numstatements; i++)
{
stat = &statements[i];
if (stat->op >= OP_CALL0 && stat->op <= OP_CALL8 && ((eval_t *)&pr_globals[stat->a])->function == df - functions)
{
for(i++; i < numstatements; i++)
{
stat = &statements[i];
if (ofs_return == stat->a && (*pr_opcodes[stat->op].type_a)->type != ev_void)
return type_names[(*pr_opcodes[stat->op].type_a)->type];
else if (ofs_return == stat->b && (*pr_opcodes[stat->op].type_b)->type != ev_void)
return type_names[(*pr_opcodes[stat->op].type_b)->type];
else if (stat->op == OP_DONE)
break;
else if (stat->op >= OP_CALL0 && stat->op <= OP_CALL8 && stat->a != df - functions)
break;
}
}
}
printf("warning: Could not determine return type for %s\n", df->s_name + strings);
return "float";
}
boolean IsConstant(QCC_ddef_t *def)
{
int i;
dstatement_t *d;
if (def->type & DEF_SAVEGLOBAL)
return false;
if (pr_globals[def->ofs] == 0)
return false;
for (i = 1; i < numstatements; i++)
{
d = &statements[i];
if (d->b == def->ofs)
{
if (pr_opcodes[d->op].associative == ASSOC_RIGHT)
{
if (d->op - OP_STORE_F < 6)
{
return false;
}
}
}
}
return true;
}
char *type_name (QCC_ddef_t *def)
{
QCC_ddef_t *j;
switch(def->type&~DEF_SAVEGLOBAL)
{
case ev_field:
case ev_pointer:
j = GetField(def->s_name + strings);
if (j)
return qcva(".%s",type_names[j->type]);
else
return type_names[def->type&~DEF_SAVEGLOBAL];
case ev_void:
case ev_string:
case ev_entity:
case ev_vector:
case ev_float:
return type_names[def->type&~DEF_SAVEGLOBAL];
case ev_function:
return "void()";
case ev_integer:
return "int";
// case ev_uinteger:
// return "unsigned";
// case ev_quat:
// return "quat";
default:
return "float";
}
};
extern int numstatements;
extern int numfunctions;
#define FILELISTSIZE 62
/*
===============
PR_String
Returns a string suitable for printing (no newlines, max 60 chars length)
===============
*/
const char *PR_String (const char *string)
{
static char buf[80];
char *s;
s = buf;
*s++ = '"';
while (string && *string)
{
if (s == buf + sizeof(buf) - 2)
break;
if (*string == '\n')
{
*s++ = '\\';
*s++ = 'n';
}
else if (*string == '"')
{
*s++ = '\\';
*s++ = '"';
}
else
*s++ = *string;
string++;
if (s - buf > 60)
{
*s++ = '.';
*s++ = '.';
*s++ = '.';
break;
}
}
*s++ = '"';
*s++ = 0;
return buf;
}
/*
============
PR_ValueString
Returns a string describing *data in a type specific manner
=============
*/
static char *PR_ValueString (etype_t type, void *val)
{
static char line[8192];
dfunction_t *f;
switch (type)
{
case ev_string:
QC_snprintfz(line, sizeof(line), "%s", PR_String(strings + *(int *)val));
break;
case ev_entity:
QC_snprintfz(line, sizeof(line), "entity %i", *(int *)val);
break;
case ev_function:
f = functions + *(int *)val;
if (!f)
QC_snprintfz(line, sizeof(line), "undefined function");
else
QC_snprintfz(line, sizeof(line), "%s()", strings + f->s_name);
break;
/*
case ev_field:
def = PR_DefForFieldOfs ( *(int *)val );
sprintf (line, ".%s", def->name);
break;
*/
case ev_void:
QC_snprintfz(line, sizeof(line), "void");
break;
case ev_float:
{
unsigned int high = *(unsigned int*)val & 0xff000000;
if (high == 0xff000000 || !high)
//FIXME this is probably a string or something, but we don't really know what type it is.
QC_snprintfz(line, sizeof(line), "(float)(__variant)%ii", *(int*)val);
else
QC_snprintfz(line, sizeof(line), "%5.1f", *(float *)val);
}
break;
case ev_vector:
QC_snprintfz(line, sizeof(line), "'%5.1f %5.1f %5.1f'", ((float *)val)[0], ((float *)val)[1], ((float *)val)[2]);
break;
case ev_pointer:
QC_snprintfz(line, sizeof(line), "pointer");
break;
case ev_field:
QC_snprintfz(line, sizeof(line), "<FIELD@%i>", *(int*)val);
break;
default:
QC_snprintfz(line, sizeof(line), "bad type %i", type);
break;
}
return line;
}
static char *filenames[] =
{
"makevectors", "defs.qc",
"button_wait", "buttons.qc",
"anglemod", "ai.qc",
"boss_face", "boss.qc",
"info_intermission", "client.qc",
"CanDamage", "combat.qc",
"demon1_stand1", "demon.qc",
"dog_bite", "dog.qc",
"door_blocked", "doors.qc",
"Laser_Touch", "enforcer.qc",
"knight_attack", "fight.qc",
"f_stand1", "fish.qc",
"hknight_shot", "hknight.qc",
"SUB_regen", "items.qc",
"knight_stand1", "knight.qc",
"info_null", "misc.qc",
"monster_use", "monsters.qc",
"OgreGrenadeExplode", "ogre.qc",
"old_idle1", "oldone.qc",
"plat_spawn_inside_trigger", "plats.qc",
"player_stand1", "player.qc",
"shal_stand", "shalrath.qc",
"sham_stand1", "shambler.qc",
"army_stand1", "soldier.qc",
"SUB_Null", "subs.qc",
"tbaby_stand1", "tarbaby.qc",
"trigger_reactivate", "triggers.qc",
"W_Precache", "weapons.qc",
"LaunchMissile", "wizard.qc",
"main", "world.qc",
"zombie_stand1", "zombie.qc"
};
//FIXME: parse fteextensions.qc instead, or something.
#define QW(x) //x,
static struct {
int num;
char *name; //purly for readability.
QCC_type_t **returns;
QCC_type_t **params[8];
char *text;
} builtins[]=
{
{0, NULL, NULL, {NULL}, NULL},
{1, "makevectors", NULL, {&type_vector}, "void (vector ang)"},
{2, "setorigin", NULL, {&type_entity, &type_vector}, "void (entity e, vector o)"},
{3, "setmodel", NULL, {&type_entity, &type_string}, "void (entity e, string m)"},
{4, "setsize", NULL, {&type_entity, &type_vector, &type_vector}, "void (entity e, vector min, vector max)"},
{5, NULL, NULL, {NULL}, NULL},
{6, NULL, NULL, {NULL}, "void ()"},
{7, "random", NULL, {NULL}, "float ()"},
{8, "sound", NULL, {&type_entity, &type_float, &type_string, &type_float, &type_float}, "void (entity e, float chan, string samp, float vol, float atten)"},
{9, "normalize", &type_vector, {&type_vector}, "vector (vector v)"},
{10, "error", NULL, {&type_string}, "void (string e)"},
{11, "objerror", NULL, {&type_string}, "void (string e)"},
{12, "vlen", &type_float, {&type_vector}, "float (vector v)"},
{13, "vectoyaw", &type_float, {&type_vector}, "float (vector v)"},
{14, "spawn", &type_entity, {NULL}, "entity ()"},
{15, "remove", NULL, {&type_entity}, "void (entity e)"},
{16, "traceline", NULL, {&type_vector, &type_vector, &type_float, &type_entity}, "void (vector v1, vector v2, float nomonsters, entity forent)"},
{17, NULL, NULL, {NULL}, "entity ()"},
{18, "find", &type_entity, {&type_entity, &type_field, &type_string}, "entity (entity start, .string fld, string match)"},
{19, "precache_sound", NULL, {&type_string}, "string (string s)"},
{20, "precache_model", NULL, {&type_string}, "string (string s)"},
{21, "stuffcmd", NULL, {&type_entity, &type_string}, "void (entity client, string s)"},
{22, "findradius", NULL, {&type_vector, &type_float}, "entity (vector org, float rad)"},
{23, "bprint", NULL, {QW(&type_float) &type_string,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string}, "void (...)"},
{24, "sprint", NULL, {&type_entity, QW(&type_float) &type_string,&type_string,&type_string,&type_string,&type_string,&type_string}, "void (...)"},
{25, "dprint", NULL, {&type_string,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string}, "void (...)"},
{26, "ftos", &type_string, {&type_float}, "string (float f)"},
{27, "vtos", &type_string, {&type_vector}, "string (vector v)"},
{28, "coredump", NULL, {NULL}, "void ()"},
{29, "traceon", NULL, {NULL}, "void ()"},
{30, "traceoff", NULL, {NULL}, "void ()"},
{31, "eprint", NULL, {&type_entity}, "void (entity e)"},
{32, "walkmove", &type_float, {&type_float, &type_float}, "float (float yaw, float dist)"},
{33, NULL, NULL, {NULL}, NULL},
{34, "droptofloor", NULL, {&type_float, &type_float}, "float ()"},
{35, "lightstyle", NULL, {&type_float, &type_string}, "void (float style, string value)"},
{36, "rint", &type_float, {&type_vector}, "float (float v)"},
{37, "floor", &type_float, {&type_vector}, "float (float v)"},
{38, "ceil", &type_float, {&type_vector}, "float (float v)"},
{39, NULL, NULL, {NULL}, NULL},
{40, "checkbottom", &type_float, {&type_entity}, "float (entity e)"},
{41, "pointcontents", &type_float, {&type_vector}, "float (vector v)"},
{42, NULL, NULL, {NULL}, NULL},
{43, "fabs", &type_float, {&type_float}, "float (float f)"},
{44, "aim", NULL, {&type_entity, &type_float}, "vector (entity e, float speed)"},
{45, "cvar", &type_string, {&type_string}, "float (string s)"},
{46, "localcmd", NULL, {&type_string}, "void (string s)"},
{47, "nextent", &type_entity, {&type_entity}, "entity (entity e)"},
{48, "", NULL, {&type_vector, &type_vector, &type_float, &type_float}, "void (vector o, vector d, float color, float count)"},
{49, "changeyaw", NULL, {NULL}, "void ()"},
{50, NULL, NULL, {NULL}, NULL},
{51, "vectoangles", &type_vector, {&type_vector}, "vector (vector v)"},
{52, "WriteByte", NULL, {&type_float, &type_float}, "void (float to, float f)"},
{53, "WriteChar", NULL, {&type_float, &type_float}, "void (float to, float f)"},
{54, "WriteShort", NULL, {&type_float, &type_float}, "void (float to, float f)"},
{55, "WriteLong", NULL, {&type_float, &type_float}, "void (float to, float f)"},
{56, "WriteCoord", NULL, {&type_float, &type_float}, "void (float to, float f)"},
{57, "WriteAngle", NULL, {&type_float, &type_float}, "void (float to, float f)"},
{58, "WriteString", NULL, {&type_float, &type_string}, "void (float to, string s)"},
{59, "WriteEntity", NULL, {&type_float, &type_entity}, "void (float to, entity s)"},
{60, NULL, NULL, {NULL}, NULL},
{61, NULL, NULL, {NULL}, NULL},
{62, NULL, NULL, {NULL}, NULL},
{63, NULL, NULL, {NULL}, NULL},
{64, NULL, NULL, {NULL}, NULL},
{65, NULL, NULL, {NULL}, NULL},
{66, NULL, NULL, {NULL}, NULL},
{67, "movetogoal", NULL, {&type_float}, "void (float step)"},
{68, "precache_file", NULL, {&type_string}, "string (string s)"},
{69, "makestatic", NULL, {&type_entity}, "void (entity e)"},
{70, "changelevel", NULL, {&type_string}, "void (string s)"},
{71, NULL, NULL, {NULL}, NULL},
{72, "cvar_set", NULL, {&type_string, &type_string}, "void (string var, string val)"},
{73, "centerprint", NULL, {&type_entity,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string}, "void (entity client, string s, ...)"},
{74, "ambientsound", NULL, {&type_vector, &type_string, &type_float, &type_float}, "void (vector pos, string samp, float vol, float atten)"},
{75, "precache_model2", NULL, {&type_string}, "string (string s)"},
{76, "precache_sound2", NULL, {&type_string}, "string (string s)"},
{77, "precache_file2", NULL, {&type_string}, "string (string s)"},
{78, "setspawnparms", NULL, {&type_entity}, "void (entity e)"},
//quakeworld specific
{79, "logfrag", NULL, {&type_entity, &type_entity}, "void(entity killer, entity killee)"},
{80, "infokey", &type_string, {&type_entity, &type_string}, "string(entity e, string key)"},
{81, "stof", &type_float, {&type_string}, "float(string s)"},
{82, "multicast", NULL, {&type_vector, &type_float}, "void(vector where, float set)"},
//these are mvdsv specific
{83, "executecmd", NULL, {NULL}, NULL},
{84, "tokenize", NULL, {&type_string}, NULL},
{85, "argc", &type_float, {NULL}, "float()"},
{86, "argv", &type_string, {&type_float}, "string(float f)"},
{87, "teamfield", NULL, {NULL}, "void(.string fs)"},
{88, "substr", &type_string, {&type_string, &type_float, &type_float}, "string(string, float, float)"},
{89, "strcat", &type_string, {&type_string,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string,&type_string}, "string (...)"},
{90, "strlen", &type_float, {&type_string}, "float(string s)"},
{91, "str2byte", &type_float, {&type_string}, "float(string s)"},
{92, NULL, NULL, {NULL}, NULL},
{93, "newstr", &type_string, {&type_string}, "string(...)"},
{94, "freestr", NULL, {&type_string}, "void(string s)"},
{95, "conprint", NULL, {NULL}, NULL},
{96, "readcmd", &type_string, {&type_string}, "string(string cmd)"},
{97, "strcpy", NULL, {NULL}, NULL},
{98, "strstr", &type_string, {&type_string, &type_string}, "string(string str, string sub)"},
{99, "strncpy", NULL, {NULL}, NULL},
{100, "log", NULL, {NULL}, NULL},
{101, "redirectcmd", NULL, {NULL}, NULL},
{102, "calltimeofday", NULL, {NULL}, NULL},
{103, "forcedemoframe", NULL, {NULL}, NULL},
};
char *DecompileValueString(etype_t type, void *val);
QCC_ddef_t *DecompileGetParameter(gofs_t ofs);
QCC_ddef_t *DecompileFindGlobal(const char *name);
char *DecompilePrintParameter(QCC_ddef_t * def);
QCC_ddef_t *DecompileFunctionGlobal(int funcnum);
char *ReadProgsCopyright(char *buf, size_t bufsize)
{
char *copyright, *e;
dprograms_t *progs = (dprograms_t*)buf;
int lowest = progs->ofs_statements;
lowest = min(lowest, progs->ofs_globaldefs);
lowest = min(lowest, progs->ofs_fielddefs);
lowest = min(lowest, progs->ofs_functions);
lowest = min(lowest, progs->ofs_strings);
lowest = min(lowest, progs->ofs_globals);
lowest = min(lowest, progs->ofs_fielddefs);
copyright = (char*)(progs+1);
if (!strncmp("\r\n\r\n", copyright, 4))
{
copyright += 4;
e = copyright+strlen(copyright)+1;
if (e && !strncmp(e, "\r\n\r\n", 4))
{
if (e+4 <= buf+lowest)
{
return copyright;
}
}
}
return NULL;
}
int DecompileReadData(char *srcfilename, char *buf, size_t bufsize)
{
dprograms_t progs;
int i, j;
void *p;
char name[1024];
QCC_ddef_t *fd;
int stsz = 16, defsz=16;
// int quakeforge = false;
memcpy(&progs, buf, sizeof(progs));
if (progs.version == PROG_VERSION)
stsz = defsz = 16;
else if (progs.version == 7)
{
if (progs.secondaryversion == PROG_SECONDARYVERSION16)
{
//regular 16bit progs, just an extended instruction set probably.
stsz = defsz = 16;
}
else if (progs.secondaryversion == PROG_SECONDARYVERSION32)
{
//32bit fte progs. everything is 32bit.
stsz = defsz = 32;
}
else
{
//progs is kk7 (certain QW TF mods). defs are 16bit but statements are 32bit. so this is unusable for saved games.
stsz = 32;
defsz = 16; //gah! fucked!
}
}
else
{
stsz = defsz = 16;
// quakeforge = true;
}
strings = buf + progs.ofs_strings;
strofs = progs.numstrings;
numstatements = progs.numstatements;
// if (numstatements > MAX_STATEMENTS)
// Sys_Error("Too many statements");
if (stsz == 16)
{
const dstatement16_t *statements6 = (const dstatement16_t*)(buf+progs.ofs_statements);
statements = malloc(numstatements * sizeof(*statements));
for (i = 0; i < numstatements; i++)
{
statements[i].op = statements6[i].op;
if (statements[i].op == OP_GOTO)
statements[i].a = (signed short)statements6[i].a;
else
statements[i].a = (unsigned short)statements6[i].a;
if (statements[i].op == OP_IF_I || statements[i].op == OP_IFNOT_I ||
statements[i].op == OP_IF_F || statements[i].op == OP_IFNOT_F ||
statements[i].op == OP_IF_S || statements[i].op == OP_IFNOT_S)
statements[i].b = (signed short)statements6[i].b;
else
statements[i].b = (unsigned short)statements6[i].b;
statements[i].c = (unsigned short)statements6[i].c;
}
}
else if (stsz == 32)
statements = (dstatement32_t*)(buf+progs.ofs_statements);
else
Sys_Error("Unrecognised progs version");
numfunctions = progs.numfunctions;
functions = (dfunction_t*)(buf+progs.ofs_functions);
DecompileProfiles = calloc(numfunctions, sizeof(*DecompileProfiles));
rettypes = calloc(numfunctions, sizeof(*rettypes));
numglobaldefs = progs.numglobaldefs;
numfielddefs = progs.numfielddefs;
if (defsz == 16)
{
const QCC_ddef16_t *gd16 = (const QCC_ddef16_t*)(buf+progs.ofs_globaldefs);
globals = malloc(numglobaldefs * sizeof(*globals));
for (i = 0; i < numglobaldefs; i++)
{
globals[i].ofs = gd16[i].ofs;
globals[i].s_name = gd16[i].s_name;
globals[i].type = gd16[i].type;
}
gd16 = (const QCC_ddef16_t*)(buf+progs.ofs_fielddefs);
fields = malloc(numfielddefs * sizeof(*fields));
for (i = 0; i < numfielddefs; i++)
{
fields[i].ofs = gd16[i].ofs;
fields[i].s_name = gd16[i].s_name;
fields[i].type = gd16[i].type;
}
}
else
{
globals = (QCC_ddef32_t*)(buf+progs.ofs_globaldefs);
fields = (QCC_ddef32_t*)(buf+progs.ofs_fielddefs);
}
pr_globals = (float*)(buf+progs.ofs_globals);
numpr_globals = progs.numglobals;
printf("Decompiling...\n");
printf("Read Data from %s:\n", srcfilename);
printf("Total Size is %6i\n", bufsize);
printf("Version Code is %i\n", progs.version);
printf("CRC is %i\n", progs.crc);
printf("%6i strofs\n", strofs);
printf("%6i numstatements\n", numstatements);
printf("%6i numfunctions\n", numfunctions);
printf("%6i numglobaldefs\n", numglobaldefs);
printf("%6i numfielddefs\n", numfielddefs);
printf("%6i numpr_globals\n", numpr_globals);
printf("----------------------\n");
if (numpr_globals > MAX_REGS)
{
printf("fatal error: progs exceeds a limit\n");
exit(1);
}
ofs_return = OFS_RETURN;
for (i = 0; i < 8; i++)
ofs_parms[i] = OFS_PARM0 + i * 3;
ofs_size = 3;
/*
if (quakeforge)
{
int typeremap[] = {ev_void, ev_string, ev_float, ev_vector, ev_entity, ev_field, ev_function, ev_pointer, ev_quat, ev_integer, ev_uinteger};
for (i = 1; i < numglobaldefs; i++)
{
globals[i].type = (globals[i].type & DEF_SAVEGLOBGAL) | typeremap[globals[i].type&~DEF_SAVEGLOBGAL];
}
for (i = 1; i < numfielddefs; i++)
{
fields[i].type = (fields[i].type & DEF_SAVEGLOBGAL) | typeremap[fields[i].type&~DEF_SAVEGLOBGAL];
}
for (i = 1; i < numstatements; i++)
{
if (statements[i].op >= OP_H2_FIRST)// && statements[i].op <= OP_H2_FIRST+sizeof(quakeforgeremap)/sizeof(quakeforgeremap[0]))
statements[i].op = quakeforgeremap[statements[i].op-OP_H2_FIRST];
}
fd = DecompileFindGlobal(".zero");
if (fd)
fd->ofs = -1;
fd = DecompileFindGlobal(".return");
if (fd)
{
ofs_return = fd->ofs;
fd->ofs = -1;
}
for (i = 0; i < 8; i++)
{
QC_snprintfz(name, sizeof(name), ".param_%i", i);
fd = DecompileFindGlobal(name);
if (fd)
{
ofs_parms[i] = fd->ofs;
fd->ofs = -1;
}
}
fd = DecompileFindGlobal(".param_size");
if (fd)
ofs_size = ((int*)pr_globals)[fd->ofs];
}
*/
//fix up the globaldefs
for (i = 1; i < numglobaldefs; i++)
{
if (globals[i].ofs < RESERVED_OFS)
globals[i].ofs += numpr_globals;
}
// fix up the functions
for (i = 1; i < numfunctions; i++)
{
if ((unsigned)functions[i].s_name >= (unsigned)strofs || strlen(functions[i].s_name + strings) <= 0)
{
fd = DecompileFunctionGlobal(i);
if (fd)
{
functions[i].s_name = fd->s_name;
continue;
}
QC_snprintfz(name, sizeof(name), "function%i", i);
name[strlen(name)] = 0;
p = malloc(strlen(name + 1));
strcpy(p, name);
functions[i].s_name = (char *)p - strings;
}
if (functions[i].first_statement > 0 && !functions[i].locals && functions[i].numparms)
{ //vanilla qcc apparently had a bug
for (j = 0; j < functions[i].numparms; j++)
functions[i].locals += functions[i].parm_size[j];
}
}
return progs.version;
}
int
DecompileGetFunctionIdxByName(const char *name)
{
int i;
for (i = 1; i < numfunctions; i++)
if (!strcmp(name, strings + functions[i].s_name))
{
return i;
}
return 0;
}
const etype_t DecompileGetFieldTypeByDef(QCC_ddef_t *def)
{
int i;
int ofs = ((int*)pr_globals)[def->ofs];
for (i = 1; i < numfielddefs; i++)
if (fields[i].ofs == ofs)
{
if (!strcmp(strings+def->s_name, strings+fields[i].s_name))
return fields[i].type;
}
return ev_void;
}
const char *DecompileGetFieldNameIdxByFinalOffset(int ofs)
{
int i;
for (i = 1; i < numfielddefs; i++)
if (fields[i].ofs == ofs)
{
return fields[i].s_name+strings;
}
return "UNKNOWN FIELD";
}
void DecompileGetFieldNameIdxByFinalOffset2(char *out, size_t outsize, int ofs)
{
int i;
for (i = 1; i < numfielddefs; i++)
{
if (fields[i].ofs == ofs)
{
QC_snprintfz(out, outsize, "%s", fields[i].s_name+strings);
return;
}
else if (fields[i].type == ev_vector && fields[i].ofs+1 == ofs)
{
QC_snprintfz(out, outsize, "%s_y", fields[i].s_name+strings);
return;
}
else if (fields[i].type == ev_vector && fields[i].ofs+2 == ofs)
{
QC_snprintfz(out, outsize, "%s_z", fields[i].s_name+strings);
return;
}
}
QC_snprintfz(out, outsize, "<FIELD@%i>", ofs);
}
int
DecompileAlreadySeen(char *fname, vfile_t **rfile)
{
int ret = 1;
vfile_t *file;
file = QCC_FindVFile(fname);
if (!file)
{
ret = 0;
if (rfile)
{
char *header = "//Decompiled code. Please respect the original copyright.\n";
*rfile = QCC_AddVFile(fname, header, strlen(header));
AddSourceFile("progs.src", fname);
}
}
else if (rfile)
*rfile = file;
return ret;
}
char *DecompileReturnType(dfunction_t *df);
char *DecompileAgressiveType(dfunction_t *df, dstatement_t *last, gofs_t ofs)
{
QCC_ddef_t *par;
par = DecompileGetParameter(ofs);
if (par) //single = intended
{
return type_name(par);
}
if (ofs == ofs_return && ((last->op >= OP_CALL0 && last->op <= OP_CALL8) || (last->op >= OP_CALL1H && last->op <= OP_CALL8H)))
{ //offset is a return value, go look at the called function's return type.
return DecompileReturnType(functions + ((int*)pr_globals)[last->a]);
}
while(last >= &statements[df->first_statement])
{
if (last->c == ofs &&
pr_opcodes[last->op].associative == ASSOC_LEFT &&
pr_opcodes[last->op].priorityclass)
{
//previous was an operation into the temp
return type_names[(*pr_opcodes[last->op].type_c)->type];
// sprintf(fname, "%s ", temp_type6(rds->a, rds, df));
}
last--;
}
return NULL; //got to start of function... shouldn't really happen.
}
char *DecompileReturnType(dfunction_t *df)
{
dstatement_t *ds;
unsigned short dom;
boolean foundret = false;
static int recursion;
char *ret = NULL; //return null if we don't know.
int couldbeastring = true;
if (df->first_statement <= 0)
{
if (df->first_statement > -(int)(sizeof(builtins)/sizeof(builtins[0])))
if (builtins[-df->first_statement].returns)
return type_names[(*builtins[-df->first_statement].returns)->type];
return "void"; //no returns statements found
}
if (rettypes[df - functions])
return rettypes[df - functions];
recursion++;
ds = statements + df->first_statement;
/*
* find a return statement, to determine the result type
*/
while (1)
{
dom = (ds->op) % OP_MARK_END_ELSE;
if (!dom)
break;
// if (dom == OPQF_RETURN_V)
// break;
if (dom == OP_RETURN)
{
if (ds->a != 0) //some code is buggy.
{
foundret = true;
if (recursion < 10)
{
ret = DecompileAgressiveType(df, ds-1, ds->a);
if (ret)
break;
}
if (((int*)pr_globals)[ds->a] < 0 && ((int*)pr_globals)[ds->a] >= strofs)
couldbeastring = false; //definatly not
else
{
char buf[64];
QC_snprintfz(buf, sizeof(buf), "%f", pr_globals[ds->a]);
if (strcmp(buf, "0.000000"))
couldbeastring = false; //doesn't fit the profile
}
}
}
ds++;
}
recursion--;
if (foundret)
{
if (!ret)
{
if (couldbeastring)
ret = "string /*WARNING: could not determine return type*/";
else
ret = "float /*WARNING: could not determine return type*/";
}
}
else
ret = "void"; //no returns statements found
rettypes[df - functions] = ret;
return ret;
}
void DecompileCalcProfiles(void)
{
int i, ps;
gofs_t j;
char *knew;
static char fname[512];
static char line[512];
dfunction_t *df;
QCC_ddef_t *par;
for (i = 1; i < numfunctions; i++)
{
df = functions + i;
fname[0] = '\0';
line[0] = '\0';
DecompileProfiles[i] = NULL;
if (df->first_statement <= 0)
{
if (-df->first_statement <= sizeof(builtins)/sizeof(builtins[0]) && builtins[-df->first_statement].text)
QC_snprintfz(fname, sizeof(fname), "%s %s", builtins[-df->first_statement].text, strings + functions[i].s_name);
else
{
QC_snprintfz(fname, sizeof(fname), "__variant(...) %s", strings + functions[i].s_name);
printf("warning: unknown builtin %s\n", strings + functions[i].s_name);
}
}
else
{
char *rettype;
rettype = DecompileReturnType(df);
if (!rettype)
{ //but we do know that it's not void
rettype = "float /*WARNING: could not determine return type*/";
}
strcpy(fname, rettype);
strcat(fname, "(");
/*
* determine overall parameter size
*/
for (j = 0, ps = 0; j < df->numparms; j++)
ps += df->parm_size[j];
if (ps > 0)
{
for (j = df->parm_start; j < (df->parm_start) + ps; j++)
{
line[0] = '\0';
par = DecompileGetParameter(j);
if (!par)
par = DecompileGetParameter((short)j);
if (!par)
{
//Error("Error - No parameter names with offset %i.", j);
// printf("No parameter names with offset %i\n", j);
if (j < (df->parm_start) + ps - 1)
QC_snprintfz(line, sizeof(line), "float par%i, ", j - df->parm_start);
else
QC_snprintfz(line, sizeof(line), "float par%i", j - df->parm_start);
}
else
{
if (par->type == ev_vector)
j += 2;
if (j < (df->parm_start) + ps - 1)
{
QC_snprintfz(line, sizeof(line), "%s, ", DecompilePrintParameter(par));
}
else
{
QC_snprintfz(line, sizeof(line), "%s", DecompilePrintParameter(par));
}
}
strcat(fname, line);
}
}
strcat(fname, ") ");
line[0] = '\0';
QC_snprintfz(line, sizeof(line), strings + functions[i].s_name);
strcat(fname, line);
}
knew = (char *)malloc(strlen(fname) + 1);
strcpy(knew, fname);
DecompileProfiles[i] = knew;
}
}
QCC_ddef_t *GlobalAtOffset(dfunction_t *df, gofs_t ofs)
{
QCC_ddef_t *def;
int i, j;
def = globalofsdef[ofs];
if (def)
return def;
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
if (def->ofs == ofs)
{
/*if (!strings[def->s_name])
{
char line[16];
char *buf;
sprintf(line, "_s_%i", def->ofs); //globals, which are defined after the locals of the function they are first used in...
buf = malloc(strlen(line)+1); //must be static variables, but we can't handle them very well
strcpy(buf, line);
def->s_name = buf - strings;
}*/
globalofsdef[ofs] = def;
return def;
}
}
if (ofs >= df->parm_start && ofs < df->parm_start + df->locals)
{
static QCC_ddef_t parm[8];
static char *parmnames[] = {"par0","par1","par2","par3","par4","par5","par6","par7"};
int parmofs = ofs - df->parm_start;
for (i = 0; i < df->numparms && i < 8; i++)
{
if (parmofs < df->parm_size[i])
{
parm[i].ofs = ofs - parmofs;
parm[i].s_name = parmnames[i]-strings;
parm[i].type = ev_void;
ofs = parm[i].ofs;
for (j = 0; j < numglobaldefs; j++)
{
def = &globals[j];
if (def->ofs == ofs)
{
char line[256], *buf;
sprintf(line, "%s_%c", strings+def->s_name, 'x'+parmofs); //globals, which are defined after the locals of the function they are first used in...
def = malloc(sizeof(*def)+strlen(line)+1); //must be static variables, but we can't handle them very well
buf = (char*)(def+1);
strcpy(buf, line);
def->s_name = buf - strings;
def->type = ev_float;
return def;
}
}
return &parm[i];
}
parmofs -= df->parm_size[i];
}
//moo
}
//FIXME: if its within the current function's bounds, its:
// within param list: argument
// never written: immediate
// optimised: a local / locked temp.
// vanilla qcc: always a temp (other locals will be named)
//elsewhere:
// if its assigned to somewhere, then its a temp
// otherwise its a const.
return NULL;
}
char *DecompileGlobal(dfunction_t *df, gofs_t ofs, QCC_type_t * req_t)
{
int i;
QCC_ddef_t *def;
static char line[8192];
char *res;
line[0] = '\0';
/*if (req_t == &def_short)
{
QC_snprintfz(line, sizeof(line), "%ii", ofs);
res = (char *)malloc(strlen(line) + 1);
strcpy(res, line);
return res;
}*/
def = GlobalAtOffset(df, ofs);
if (def)
{
if (!strcmp(strings + def->s_name, "IMMEDIATE") || !strcmp(strings + def->s_name, ".imm"))
{
etype_t ty;
if (!req_t)
ty = def->type;
else
{
ty = (etype_t)(req_t->type);
if (!ty)
ty = def->type;
}
QC_snprintfz(line, sizeof(line), "%s", DecompileValueString(ty, &pr_globals[def->ofs]));
}
else
{
if (!strings[def->s_name])
{
char line[16];
char *buf;
QCC_ddef_t *parent;
if (ofs >= df->parm_start && ofs < df->parm_start + df->locals)
goto lookslikealocal;
else if ((parent = GlobalAtOffset(df, ofs-1)) && parent->type == ev_vector)
{ // _y
QC_snprintfz(line, sizeof(line), "%s_y", strings+parent->s_name); //globals, which are defined after the locals of the function they are first used in...
buf = malloc(strlen(line)+1); //must be static variables, but we can't handle them very well
strcpy(buf, line);
def->s_name = buf - strings;
}
else if ((parent = GlobalAtOffset(df, ofs-2)) && parent->type == ev_vector)
{ // _z
QC_snprintfz(line, sizeof(line), "%s_z", strings+parent->s_name); //globals, which are defined after the locals of the function they are first used in...
buf = malloc(strlen(line)+1); //must be static variables, but we can't handle them very well
strcpy(buf, line);
def->s_name = buf - strings;
}
else
{
QC_snprintfz(line, sizeof(line), "_sloc_%i", def->ofs); //globals, which are defined after the locals of the function they are first used in...
buf = malloc(strlen(line)+1); //must be static variables, but we can't handle them very well
strcpy(buf, line);
def->s_name = buf - strings;
}
}
QC_snprintfz(line, sizeof(line), "%s", strings + def->s_name);
if (def->type == ev_field && req_t == type_field && req_t->aux_type == type_float && DecompileGetFieldTypeByDef(def) == ev_vector)
strcat(line, "_x");
else if (def->type == ev_vector && req_t == type_float)
strcat(line, "_x");
}
res = (char *)malloc(strlen(line) + 1);
strcpy(res, line);
return res;
}
if (ofs >= df->parm_start && ofs < df->parm_start + df->locals)
{
int parmofs;
lookslikealocal:
QC_snprintfz(line, sizeof(line), "local_%i", ofs);
for (i = 0, parmofs = ofs - df->parm_start; i < df->numparms && i < 8; i++)
{
if (parmofs < df->parm_size[i])
{
if (parmofs)
QC_snprintfz(line, sizeof(line), "par%i_%c", i, 'x'+parmofs);
else
QC_snprintfz(line, sizeof(line), "par%i", i);
break;
}
parmofs -= df->parm_size[i];
}
if (!assumelocals && i == df->numparms)
return NULL; //we don't know what this is. assume its a temp
res = (char *)malloc(strlen(line) + 1);
strcpy(res, line);
return res;
}
if (assumeglobals)
{ //unknown globals are normally assumed to be temps
if (ofs >= ofs_parms[7]+ofs_size)
{
QC_snprintfz(line, sizeof(line), "tmp_%i", ofs);
res = (char *)malloc(strlen(line) + 1);
strcpy(res, line);
return res;
}
}
return NULL;
}
static struct
{
char *text;
QCC_type_t *type;
} IMMEDIATES[MAX_REGS];
gofs_t DecompileScaleIndex(dfunction_t *df, gofs_t ofs)
{
gofs_t nofs = 0;
/*if (ofs > ofs_parms[7]+ofs_size)
nofs = ofs - df->parm_start + ofs_parms[7]+ofs_size;
else*/
nofs = ofs;
if ((nofs < 0) || (nofs > MAX_REGS - 1))
{
printf("Fatal Error - Index (%i) out of bounds.\n", nofs);
return 0;
exit(1);
}
return nofs;
}
void DecompileImmediate_Free(void)
{
int i;
for (i = 0; i < MAX_REGS; i++)
{
if (IMMEDIATES[i].text)
{
free(IMMEDIATES[i].text);
IMMEDIATES[i].text = NULL;
}
}
}
void DecompileImmediate_Insert(dfunction_t *df, gofs_t ofs, char *knew, QCC_type_t *type)
{
QCC_ddef_t *d;
int nofs;
nofs = DecompileScaleIndex(df, ofs);
if (IMMEDIATES[nofs].text)
{
// fprintf(Decompileofile, "/*WARNING: Discarding \"%s\"/", IMMEDIATES[nofs]);
free(IMMEDIATES[nofs].text);
IMMEDIATES[nofs].text = NULL;
}
d = GlobalAtOffset(df, ofs);
if (d && d->s_name)// && strcmp(strings+d->s_name, "IMMEDIATE"))
{ //every operator has a src (or two) and a dest.
//many compilers optimise by using the dest of a maths/logic operator to store to a local/global
//they then skip off the storeopcode.
//without this, we would never see these stores.
IMMEDIATES[nofs].text = NULL;
IMMEDIATES[nofs].type = NULL;
QCC_CatVFile(Decompileofile, "%s = %s;\n", strings + d->s_name, knew);
}
else
{
IMMEDIATES[nofs].text = (char *)malloc(strlen(knew) + 1);
strcpy(IMMEDIATES[nofs].text, knew);
IMMEDIATES[nofs].type = type;
}
}
char *DecompileImmediate_Get(dfunction_t *df, gofs_t ofs, QCC_type_t *req_t)
{
char *res;
gofs_t nofs;
nofs = DecompileScaleIndex(df, ofs);
// printf("DecompileImmediate - Index scale: %i -> %i.\n", ofs, nofs);
// insert at nofs
if (IMMEDIATES[nofs].text)
{
// printf("DecompileImmediate - Reading \"%s\" at index %i.\n", IMMEDIATES[nofs], nofs);
if (IMMEDIATES[nofs].type == type_vector && req_t == type_float)
{
res = (char *)malloc(strlen(IMMEDIATES[nofs].text) + 4);
if (strchr(IMMEDIATES[nofs].text, '('))
sprintf(res, "%s[0]", IMMEDIATES[nofs].text);
else
sprintf(res, "%s_x", IMMEDIATES[nofs].text);
}
else
{
res = (char *)malloc(strlen(IMMEDIATES[nofs].text) + 1);
strcpy(res, IMMEDIATES[nofs].text);
}
return res;
}
else
{ //you are now entering the hack zone.
char temp[8192];
switch(req_t?req_t->type:-1)
{
case ev_void: //for lack of any better ideas.
case ev_float:
if ((float)(int)pr_globals[ofs] == pr_globals[ofs])
QC_snprintfz(temp, sizeof(temp), "%i", (int)(pr_globals[ofs]));
else if ((*(int*)&pr_globals[ofs] & 0x7f800000) || !(*(int*)&pr_globals[ofs] & 0x7fffffff))
QC_snprintfz(temp, sizeof(temp), "%f", pr_globals[ofs]);
else
QC_snprintfz(temp, sizeof(temp), "%%%i", *(int*)&pr_globals[ofs]);
if (pr_globals[ofs] == 0 || ((int*)pr_globals)[ofs] < 0 || ((int*)pr_globals)[ofs] >= strofs || strcmp(temp, "0.000000"))
break;
// printf("Hey! That's not a float! error in %s\n", strings + df->s_name);
// printf("%f could be %s\n", pr_globals[ofs], &strings[((int*)pr_globals)[ofs]]);
case ev_string:
{
const char *in;
char *out;
if (((int*)pr_globals)[ofs] < 0 || ((int*)pr_globals)[ofs] > strofs)
{
printf("Hey! That's not a string! error in %s\n", strings + df->s_name);
QC_snprintfz(temp, sizeof(temp), "%f", pr_globals[ofs]);
break;
}
in = &strings[((int*)pr_globals)[ofs]];
out = temp;
if (req_t->type != ev_string)
{
QC_snprintfz(temp, sizeof(temp), "/*%i*/", ((int*)pr_globals)[ofs]);
out += strlen(out);
}
*out++ = '\"';
while (*in)
{
if (*in == '\"')
{
*out++ = '\\';
*out++ = '\"';
in++;
}
else if (*in == '\n')
{
*out++ = '\\';
*out++ = 'n';
in++;
}
else if (*in == '\\')
{
*out++ = '\\';
*out++ = '\\';
in++;
}
else if (*in == '\r')
{
*out++ = '\\';
*out++ = 'r';
in++;
}
else if (*in == '\a')
{
*out++ = '\\';
*out++ = 'a';
in++;
}
else if (*in == '\b')
{
*out++ = '\\';
*out++ = 'b';
in++;
}
else if (*in == '\f')
{
*out++ = '\\';
*out++ = 'f';
in++;
}
else if (*in == '\t')
{
*out++ = '\\';
*out++ = 't';
in++;
}
else if (*in == '\v')
{
*out++ = '\\';
*out++ = 'v';
in++;
}
else
*out++ = *in++;
}
*out++ = '\"';
*out++ = '\0';
}
break;
case ev_vector:
QC_snprintfz(temp, sizeof(temp), "\'%f %f %f\'", pr_globals[ofs],pr_globals[ofs+1],pr_globals[ofs+2]);
break;
// case ev_quat:
// QC_snprintfz(temp, sizeof(temp), "\'%f %f %f %f\'", pr_globals[ofs],pr_globals[ofs+1],pr_globals[ofs+2],pr_globals[ofs+3]);
// break;
case ev_integer:
QC_snprintfz(temp, sizeof(temp), "%ii", ((int*)pr_globals)[ofs]);
break;
// case ev_uinteger:
// QC_snprintfz(temp, sizeof(temp), "%uu", ((int*)pr_globals)[ofs]);
// break;
case ev_pointer:
QC_snprintfz(temp, sizeof(temp), "(__variant*)0x%xi", ((int*)pr_globals)[ofs]);
break;
case ev_function:
if (!((int*)pr_globals)[ofs])
QC_snprintfz(temp, sizeof(temp), "__NULL__/*func*/");
else if (((int*)pr_globals)[ofs] > 0 && ((int*)pr_globals)[ofs] < numfunctions && functions[((int*)pr_globals)[ofs]].s_name>0)
QC_snprintfz(temp, sizeof(temp), "%s/*immediate*/", strings+functions[((int*)pr_globals)[ofs]].s_name);
else
QC_snprintfz(temp, sizeof(temp), "((__variant(...))%i)", ((int*)pr_globals)[ofs]);
break;
case ev_entity:
if (!pr_globals[ofs])
QC_snprintfz(temp, sizeof(temp), "((entity)__NULL__)");
else
QC_snprintfz(temp, sizeof(temp), "(entity)%i", ((int*)pr_globals)[ofs]);
break;
case ev_field:
if (!pr_globals[ofs])
QC_snprintfz(temp, sizeof(temp), "((.void)__NULL__)");
else
QC_snprintfz(temp, sizeof(temp), "/*field %s*/%i", DecompileGetFieldNameIdxByFinalOffset(((int*)pr_globals)[ofs]), ((int*)pr_globals)[ofs]);
break;
default:
QC_snprintfz(temp, sizeof(temp), "FIXME");
break;
}
res = (char *)malloc(strlen(temp) + 1);
strcpy(res, temp);
return res;
}
return NULL;
}
char *DecompileGet(dfunction_t *df, gofs_t ofs, QCC_type_t *req_t)
{
char *farg1;
/*if (req_t == &def_short)
{
char temp[16];
QC_snprintfz(temp, sizeof(temp), "%i", ofs);
return strdup(temp);
}*/
farg1 = NULL;
farg1 = DecompileGlobal(df, ofs, req_t);
if (farg1 == NULL)
farg1 = DecompileImmediate_Get(df, ofs, req_t);
return farg1;
}
void DecompilePrintStatement(dstatement_t *s);
void DecompileIndent(int c)
{
int i;
if (c < 0)
c = 0;
for (i = 0; i < c; i++)
{
QCC_CatVFile(Decompileofile, "\t");
}
}
void DecompileOpcode(dfunction_t *df, int a, int b, int c, char *opcode, QCC_type_t *typ1, QCC_type_t *typ2, QCC_type_t *typ3, int usebrackets, int *indent)
{
static char line[512];
char *arg1, *arg2, *arg3;
arg1 = DecompileGet(df, a, typ1);
arg2 = DecompileGet(df, b, typ2);
arg3 = DecompileGlobal(df, c, typ3);
if (arg3)
{
DecompileIndent(*indent);
if (usebrackets)
QCC_CatVFile(Decompileofile, "%s = %s %s %s;\n", arg3, arg1, opcode, arg2);
else
QCC_CatVFile(Decompileofile, "%s = %s%s%s;\n", arg3, arg1, opcode, arg2);
}
else
{
if (usebrackets)
QC_snprintfz(line, sizeof(line), "(%s %s %s)", arg1, opcode, arg2);
else
QC_snprintfz(line, sizeof(line), "%s%s%s", arg1, opcode, arg2);
DecompileImmediate_Insert(df, c, line, typ3);
}
}
void DecompileDecompileStatement(dfunction_t * df, dstatement_t * s, int *indent)
{
static char line[8192];
static char fnam[512];
char *arg1, *arg2, *arg3;
int nargs, i, j;
dstatement_t *t;
unsigned int dom, doc, ifc, tom;
QCC_type_t *typ1, *typ2, *typ3;
QCC_ddef_t *par;
dstatement_t *k;
int dum;
arg1 = arg2 = arg3 = NULL;
line[0] = '\0';
fnam[0] = '\0';
dom = s->op;
doc = dom / OP_MARK_END_DO;
ifc = (dom % OP_MARK_END_DO) / OP_MARK_END_ELSE;
// use program flow information
for (i = 0; i < ifc; i++)
{
(*indent)--;
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "}\n");//FrikaC style modification
}
for (i = 0; i < doc; i++)
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "do\n");
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
/*
* remove all program flow information
*/
s->op %= OP_MARK_END_ELSE;
typ1 = pr_opcodes[s->op].type_a?*pr_opcodes[s->op].type_a:NULL;
typ2 = pr_opcodes[s->op].type_b?*pr_opcodes[s->op].type_b:NULL;
typ3 = pr_opcodes[s->op].type_c?*pr_opcodes[s->op].type_c:NULL;
/*
* printf("DecompileDecompileStatement - decompiling %i (%i):\n",(int)(s - statements),dom);
* DecompilePrintStatement (s);
*/
/*
* states are handled at top level
*/
if (s->op == OP_DONE)
{
}
else if (s->op == OP_BOUNDCHECK)
{
/*these are auto-generated as a sideeffect. currently there is no syntax to explicitly use one (other than asm), but we don't want to polute the code when they're autogenerated, so ditch them all*/
}
else if (s->op == OP_STATE)
{
par = DecompileGetParameter(s->a);
if (!par)
{
printf("Error - Can't determine frame number.\n");
exit(1);
}
arg2 = DecompileGet(df, s->b, NULL);
if (!arg2)
{
printf("Error - No state parameter with offset %i.\n", s->b);
exit(1);
}
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "state [ %s, %s ];\n", DecompileValueString((etype_t)(par->type), &pr_globals[par->ofs]), arg2);
// free(arg2);
}
else if (s->op == OP_RETURN/* || s->op == OPQF_RETURN_V*/)
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "return");
if (s->a)
{
QCC_CatVFile(Decompileofile, " ");
arg1 = DecompileGet(df, s->a, type_void); //FIXME: we should know the proper type better than this.
QCC_CatVFile(Decompileofile, "(%s)", arg1);
}
QCC_CatVFile(Decompileofile, ";\n");
}
else if (pr_opcodes[s->op].flags & OPF_STD)
{
DecompileOpcode(df, s->a, s->b, s->c, pr_opcodes[s->op].name, typ1, typ2, typ3, true, indent);
}
else if ((pr_opcodes[s->op].flags & OPF_LOADPTR) || OP_GLOBALADDRESS == s->op)
{
arg1 = DecompileGet(df, s->a, typ1);
arg2 = DecompileGet(df, s->b, typ2);
arg3 = DecompileGlobal(df, s->c, typ3);
if (arg3)
{
DecompileIndent(*indent);
if (s->b)
QCC_CatVFile(Decompileofile, "%s = &%s[%s];\n", arg3, arg1, arg2);
else
QCC_CatVFile(Decompileofile, "%s = &%s;\n", arg3, arg1);
}
else
{
if (s->b)
QC_snprintfz(line, sizeof(line), "%s[%s]", arg1, arg2);
else
QC_snprintfz(line, sizeof(line), "%s", arg1);
DecompileImmediate_Insert(df, s->c, line, typ3);
}
}
else if ((OP_LOAD_F <= s->op && s->op <= OP_ADDRESS) || s->op == OP_LOAD_P || s->op == OP_LOAD_I)
{
if (s->op == OP_ADDRESS)
{
QCC_ddef_t *def = GlobalAtOffset(df, s->b);
if (def && DecompileGetFieldTypeByDef(def) == ev_vector)
typ3 = type_vector;
}
type_field->aux_type = typ3;
DecompileOpcode(df, s->a, s->b, s->c, ".", typ1, typ2, typ3, false, indent);
type_field->aux_type = NULL;
}
else if ((OP_LOADA_F <= s->op && s->op <= OP_LOADA_I))// || (OPQF_LOADBI_F <= s->op && s->op <= OPQF_LOADBI_P))
{
static char line[512];
char *arg1, *arg2, *arg3;
arg1 = DecompileGet(df, s->a, typ1);
arg2 = DecompileGet(df, s->b, typ2);
arg3 = DecompileGlobal(df, s->c, typ3);
if (arg3)
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "%s = %s[%s];\n", arg3, arg1, arg2);
}
else
{
QC_snprintfz(line, sizeof(line), "%s[%s]", arg1, arg2);
DecompileImmediate_Insert(df, s->c, line, typ3);
}
}
else if (pr_opcodes[s->op].flags & OPF_STORE)
{
QCC_type_t *parmtype=NULL;
if (s->b >= ofs_parms[0] && s->b < ofs_parms[7]+ofs_size)
{ //okay, so typ1 might not be what the store type says it should be.
k = s+1;
while(k->op%OP_MARK_END_ELSE)
{
if ((k->op >= OP_CALL0 && k->op <= OP_CALL8) || (k->op >= OP_CALL1H && k->op <= OP_CALL8H))
{
//well, this is it.
int fn;
int pn;
dfunction_t *cf;
QCC_ddef_t *def;
fn = ((int*)pr_globals)[k->a];
cf = &functions[fn];
if (cf->first_statement<=0 && cf->first_statement > -(signed)(sizeof(builtins)/sizeof(builtins[0]))) //builtins don't have this info.
{
QCC_type_t **p = builtins[-cf->first_statement].params[(s->b-ofs_parms[0])/ofs_size];
parmtype = p?*p:NULL;
}
else
{
fn = cf->parm_start;
for (pn = 0; pn < (s->b-ofs_parms[0])/ofs_size; pn++)
fn += cf->parm_size[pn];
def = DecompileGetParameter(fn);
if (def)
{
switch(def->type)
{
case ev_float:
parmtype = type_float;
break;
case ev_string:
parmtype = type_string;
break;
case ev_vector:
parmtype = type_vector;
break;
case ev_entity:
parmtype = type_entity;
break;
case ev_function:
parmtype = type_function;
break;
case ev_integer:
parmtype = type_integer;
break;
// case ev_uinteger:
// parmtype = type_uinteger;
// break;
// case ev_quat:
// parmtype = type_quat;
// break;
default:
// parmtype = type_float;
break;
}
}
}
break;
}
else if (OP_STORE_F <= s->op && s->op <= OP_STORE_FNC)
{
if (k->b < s->b) //whoops... older QCCs can nest things awkwardly.
break;
}
k++;
}
}
if (parmtype)
arg1 = DecompileGet(df, s->a, parmtype);
else
arg1 = DecompileGet(df, s->a, typ1);
arg3 = DecompileGlobal(df, s->b, typ2);
if (arg3)
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "%s %s %s;\n", arg3, pr_opcodes[s->op].name, arg1);
}
else
{
QC_snprintfz(line, sizeof(line), "%s", arg1);
DecompileImmediate_Insert(df, s->b, line, NULL);
}
}
else if (pr_opcodes[s->op].flags & OPF_STOREPTR)
{
arg1 = DecompileGet(df, s->a, typ2);
//FIXME: we need to deal with ref types and other crazyness, so we know whether we need to add * or *& or if we can skip that completely
arg2 = DecompileGet(df, s->b, typ2);
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "%s %s %s;\n", arg2, pr_opcodes[s->op].name, arg1);
}
else if (OP_CONV_FTOI == s->op)
{
arg1 = DecompileGet(df, s->a, typ1);
QC_snprintfz(line, sizeof(line), "(int)%s", arg1);
DecompileImmediate_Insert(df, s->c, line, type_integer);
}
else if (OP_CONV_ITOF == s->op)
{
arg1 = DecompileGet(df, s->a, typ1);
QC_snprintfz(line, sizeof(line), "(float)%s", arg1);
DecompileImmediate_Insert(df, s->c, line, type_float);
}
else if (OP_RAND0 == s->op)
{
DecompileImmediate_Insert(df, ofs_return, "random()", type_float);
}
else if (OP_RAND1 == s->op)
{
arg1 = DecompileGet(df, s->a, typ1);
QC_snprintfz(line, sizeof(line), "random(%s)", arg1);
DecompileImmediate_Insert(df, ofs_return, line, type_float);
}
else if (OP_RAND2 == s->op)
{
arg1 = DecompileGet(df, s->a, typ1);
arg2 = DecompileGet(df, s->b, typ2);
QC_snprintfz(line, sizeof(line), "random(%s, %s)", arg1, arg2);
DecompileImmediate_Insert(df, ofs_return, line, type_float);
}
else if (OP_NOT_F <= s->op && s->op <= OP_NOT_FNC)
{
arg1 = DecompileGet(df, s->a, typ1);
QC_snprintfz(line, sizeof(line), "!%s", arg1);
DecompileImmediate_Insert(df, s->c, line, type_float);
}
else if ((OP_CALL0 <= s->op && s->op <= OP_CALL8) || (OP_CALL1H <= s->op && s->op <= OP_CALL8H))
{
if (OP_CALL1H <= s->op && s->op <= OP_CALL8H)
nargs = (s->op - OP_CALL1H) + 1;
else
nargs = s->op - OP_CALL0;
arg1 = DecompileGet(df, s->a, type_function);
QC_snprintfz(line, sizeof(line), "%s(", arg1);
QC_snprintfz(fnam, sizeof(fnam), "%s", arg1);
for (i = 0; i < nargs; i++)
{
typ1 = NULL;
if (i == 0 && OP_CALL1H <= s->op && s->op <= OP_CALL8H)
j = s->b;
else if (i == 1 && OP_CALL1H <= s->op && s->op <= OP_CALL8H)
j = s->c;
else
j = ofs_parms[i];
if (arg1)
free(arg1);
arg1 = DecompileGet(df, (gofs_t)j, typ1);
strcat(line, arg1);
if (i < nargs - 1)
strcat(line, ", ");//frikqcc modified
}
strcat(line, ")");
DecompileImmediate_Insert(df, ofs_return, line, NULL);
/*
* if ( ( ( (s+1)->a != 1) && ( (s+1)->b != 1) &&
* ( (s+2)->a != 1) && ( (s+2)->b != 1) ) ||
* ( ((s+1)->op) % OP_MARK_END_ELSE == OP_CALL0 ) ) {
* DecompileIndent(*indent);
* fprintf(Decompileofile,"%s;\n",line);
* }
*/
if ((((s + 1)->a != ofs_return) && ((s + 1)->b != ofs_return) &&
((s + 2)->a != ofs_return) && ((s + 2)->b != ofs_return)) ||
((((s + 1)->op) % OP_MARK_END_ELSE == OP_CALL0) && ((((s + 2)->a != ofs_return)) || ((s + 2)->b != ofs_return))))
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "%s;\n", line);
}
}
else if (s->op == OP_IF_I || s->op == OP_IFNOT_I ||
s->op == OP_IF_F || s->op == OP_IFNOT_F ||
s->op == OP_IF_S || s->op == OP_IFNOT_S/* || s->op == OPQF_IFA || s->op == OPQF_IFB || s->op == OPQF_IFAE || s->op == OPQF_IFBE*/)
{
arg1 = DecompileGet(df, s->a, type_float); //FIXME: this isn't quite accurate...
arg2 = DecompileGlobal(df, s->a, NULL);
if (s->op == OP_IFNOT_I || s->op == OP_IFNOT_F || s->op == OP_IFNOT_S)
{
lameifnot:
if ((signed int)s->b < 1)
{
// if (arg1)
// free(arg1);
// if (arg2)
// free(arg2);
// if (arg3)
// free(arg3);
return;
printf("Found a negative IFNOT jump.\n");
exit(1);
}
/*
* get instruction right before the target
*/
t = s + (signed int)s->b - 1;
tom = t->op % OP_MARK_END_ELSE;
if (tom != OP_GOTO)
{
/*
* pure if
*/
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "if (%s)\n", arg1);//FrikaC modified
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
else
{
if ((signed int)t->a > 0)
{
/*
* ite
*/
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "if (%s)\n", arg1);//FrikaC modified
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
else
{
if (((signed int)t->a + (signed int)s->b) > 1)
{
/*
* pure if
*/
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "if (%s)\n", arg1);//FrikaC modified
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
else
{
dum = 1;
for (k = t + (signed int)(t->a); k < s; k++)
{
tom = k->op % OP_MARK_END_ELSE;
if (tom == OP_GOTO ||
tom == OP_IF_I || tom == OP_IFNOT_I ||
tom == OP_IF_F || tom == OP_IFNOT_F ||
tom == OP_IF_S || tom == OP_IFNOT_S)
dum = 0;
}
if (dum)
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "while (%s)\n", arg1);
DecompileIndent(*indent); //FrikaC
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
else
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "if (%s)\n", arg1);//FrikaC modified
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
}
}
}
}
/*else if (s->op == OPQF_IFA)
{
char *t = arg1;
arg1 = malloc(strlen(arg1)+8);
sprintf(arg1, "(%s) <= 0", t);
free(t);
goto lameifnot;
}
else if (s->op == OPQF_IFAE)
{
char *t = arg1;
arg1 = malloc(strlen(arg1)+7);
sprintf(arg1, "(%s) < 0", t);
free(t);
goto lameifnot;
}
else if (s->op == OPQF_IFB)
{
char *t = arg1;
arg1 = malloc(strlen(arg1)+8);
sprintf(arg1, "(%s) >= 0", t);
free(t);
goto lameifnot;
}
else if (s->op == OPQF_IFBE)
{
char *t = arg1;
arg1 = malloc(strlen(arg1)+7);
sprintf(arg1, "(%s) > 0", t);
free(t);
goto lameifnot;
}*/
else
{
if ((signed int)s->b>0)
{
char *t = arg1;
//if (!...)
arg1 = malloc(strlen(arg1)+2);
sprintf(arg1, "!%s", t);
free(t);
goto lameifnot;
}
else
{
/*
* do ... while
*/
(*indent)--;
QCC_CatVFile(Decompileofile, "\n");
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "} while (%s);\n", arg1);
}
}
}
else if (s->op == OPD_GOTO_FORSTART)
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "do_tail\n", (s-statements) + (signed int)s->a);
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
else if (s->op == OPD_GOTO_WHILE1)
{
(*indent)--;
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "} while(1);\n");
}
else if (s->op == OP_GOTO)
{
if ((signed int)s->a > 0)
{
/*
* else
*/
(*indent)--;
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "}\n");
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "else\n");
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "{\n");
(*indent)++;
}
else
{
/*
* while
*/
(*indent)--;
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "}\n");
}
}
else
{
int op = s->op%OP_MARK_END_ELSE;
if (op <= OP_BITOR_F && pr_opcodes[s->op].opname)
printf("warning: Unknown usage of OP_%s", pr_opcodes[s->op].opname);
else
{
DecompileIndent(*indent);
QCC_CatVFile(Decompileofile, "[OP_%s", pr_opcodes[op].opname);
if (s->a)
QCC_CatVFile(Decompileofile, ", %s", DecompileGet(df, s->a, typ1));
if (s->b)
QCC_CatVFile(Decompileofile, ", %s", DecompileGet(df, s->b, typ1));
if (s->c)
QCC_CatVFile(Decompileofile, ", %s", DecompileGet(df, s->c, typ1));
QCC_CatVFile(Decompileofile, "]\n");
printf("warning: Unknown opcode %i in %s\n", op, strings + df->s_name);
}
}
// printf("DecompileDecompileStatement - Current line is \"%s\"\n", line);
if (arg1)
free(arg1);
if (arg2)
free(arg2);
if (arg3)
free(arg3);
return;
}
boolean DecompileDecompileFunction(dfunction_t * df, dstatement_t *altdone)
{
dstatement_t *ds;
int indent;
// Initialize
DecompileImmediate_Free();
indent = 1;
ds = statements + df->first_statement;
if(ds->op == OP_STATE)
ds++;
while (1)
{
if (ds == altdone)
{
//decompile the dummy done, cos we can
DecompileDecompileStatement(df, statements, &indent);
break;
}
DecompileDecompileStatement(df, ds, &indent);
if (!ds->op)
break;
ds++;
}
if (indent != 1)
{
printf("warning: Indentation structure corrupt (in func %s)\n", strings+df->s_name);
return false;
}
return true;
}
char *DecompileString(int qcstring)
{
static char buf[8192];
char *s;
int c = 1;
const char *string = strings+qcstring;
if (qcstring < 0 || qcstring >= strofs)
return "Invalid String";
s = buf;
*s++ = '"';
while (string && *string)
{
if (c == sizeof(buf) - 2)
break;
if (*string == '\n')
{
*s++ = '\\';
*s++ = 'n';
c++;
}
else if (*string == '"')
{
*s++ = '\\';
*s++ = '"';
c++;
}
else
{
*s++ = *string;
c++;
}
string++;
if (c > (int)(sizeof(buf) - 10))
{
*s++ = '.';
*s++ = '.';
*s++ = '.';
c += 3;
break;
}
}
*s++ = '"';
*s++ = 0;
return buf;
}
char *DecompileValueString(etype_t type, void *val)
{
static char line[8192];
line[0] = '\0';
switch (type)
{
case ev_string:
QC_snprintfz(line, sizeof(line), "%s", DecompileString(*(int *)val));
break;
case ev_void:
QC_snprintfz(line, sizeof(line), "void");
break;
case ev_float:
if (*(float *)val > 999999 || *(float *)val < -999999) // ugh
QC_snprintfz(line, sizeof(line), "%.f", *(float *)val);
else if ((!(*(int*)val & 0x7f800000) || (*(int*)val & 0x7f800000)==0x7f800000) && (*(int*)val & 0x7fffffff))
QC_snprintfz(line, sizeof(line), "%%%i", *(int*)val);
else if ((*(float *)val < 0.001) && (*(float *)val > 0))
QC_snprintfz(line, sizeof(line), "%.6f", *(float *)val);
else
QC_snprintfz(line, sizeof(line), "%g", *(float *)val);
break;
case ev_vector:
QC_snprintfz(line, sizeof(line), "'%g %g %g'", ((float *)val)[0], ((float *)val)[1], ((float *)val)[2]);
break;
// case ev_quat:
// QC_snprintfz(line, sizeof(line), "'%g %g %g %g'", ((float *)val)[0], ((float *)val)[1], ((float *)val)[2], ((float *)val)[3]);
// break;
case ev_field:
DecompileGetFieldNameIdxByFinalOffset2(line, sizeof(line), *(int *)val);
break;
case ev_entity:
QC_snprintfz(line, sizeof(line), "(entity)%ii", *(int *)val);
break;
case ev_integer:
QC_snprintfz(line, sizeof(line), "%ii", *(int *)val);
break;
// case ev_uinteger:
// QC_snprintfz(line, sizeof(line), "%uu", *(int *)val);
// break;
case ev_pointer:
QC_snprintfz(line, sizeof(line), "(__variant*)0x%xi", *(int *)val);
break;
case ev_function:
if (*(int *)val>0 && *(int *)val<numfunctions)
QC_snprintfz(line, sizeof(line), "(/*func 0x%x*/%s)", *(int *)val, strings+functions[*(int *)val].s_name);
else
QC_snprintfz(line, sizeof(line), "((void())0x%xi)", *(int *)val);
break;
default:
QC_snprintfz(line, sizeof(line), "bad type %i", type);
break;
}
return line;
}
char *DecompilePrintParameter(QCC_ddef_t * def)
{
static char line[128];
static char debug[128];
line[0] = '0';
if (debug_offs)
{
QC_snprintfz(debug, sizeof(debug), " /*@%i*/", def->ofs);
}
else
*debug = 0;
if (!strings[def->s_name]) //null string...
{
QC_snprintfz(line, sizeof(line), "%s _p_%i%s", type_name(def), def->ofs, debug);
}
else if (!strcmp(strings + def->s_name, "IMMEDIATE") || !strcmp(strings + def->s_name, ".imm"))
{
QC_snprintfz(line, sizeof(line), "%s%s", DecompileValueString((etype_t)(def->type), &pr_globals[def->ofs]), debug);
}
else
{
QC_snprintfz(line, sizeof(line), "%s %s%s", type_name(def), strings + def->s_name, debug);
}
return line;
}
//we only work with prior fields.
const char *GetMatchingField(QCC_ddef_t *field)
{
int i;
QCC_ddef_t *def;
int ld, lf;
def = NULL;
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
if ((def->type&~DEF_SAVEGLOBAL) == ev_field)
{
if (((int*)pr_globals)[def->ofs] == field->ofs)
{
if (!strcmp(strings+def->s_name, strings+field->s_name))
break; //found ourself, give up.
lf = strlen(strings + field->s_name);
ld = strlen(strings + def->s_name);
if (lf - 2 == ld)
{
if ((strings + field->s_name)[lf-2] == '_')
if (!strncmp(strings + field->s_name, strings + def->s_name, ld))
break;
}
return def->s_name+strings;
}
}
}
return NULL;
}
QCC_ddef_t *GetField(const char *name)
{
int i;
QCC_ddef_t *d;
if (!*name)
return NULL;
if (*name == '.')
name++; //some idiot _intentionally_ decided to fuck shit up. go them!
for (i = 0; i < numfielddefs; i++)
{
d = &fields[i];
if (!strcmp(strings + d->s_name, name))
return d;
}
return NULL;
}
QCC_ddef_t *DecompileGetParameter(gofs_t ofs)
{
int i;
QCC_ddef_t *def;
def = NULL;
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
if (def->ofs == ofs)
{
return def;
}
}
return NULL;
}
QCC_ddef_t *DecompileFindGlobal(const char *findname)
{
int i;
QCC_ddef_t *def;
const char *defname;
def = NULL;
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
defname = strings + def->s_name;
if (!strcmp(findname, defname))
{
return def;
}
}
return NULL;
}
QCC_ddef_t *DecompileFunctionGlobal(int funcnum)
{
int i;
QCC_ddef_t *def;
def = NULL;
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
if (def->type == ev_function)
{
if (((int*)pr_globals)[def->ofs] == funcnum)
{
return def;
}
}
}
return NULL;
}
void DecompileFunction(const char *name, int *lastglobal)
{
int i, findex, ps;
dstatement_t *ds, *ts, *altdone;
dfunction_t *df;
QCC_ddef_t *par;
char *arg2;
unsigned short dom, tom;
int j, start, end;
QCC_ddef_t *ef;
static char line[8192];
dstatement_t *k;
int dum;
size_t startpos;
const char *matchingfield;
for (i = 1; i < numfunctions; i++)
if (!strcmp(name, strings + functions[i].s_name))
break;
if (i == numfunctions)
{
printf("Fatal Error: No function named \"%s\"\n", name);
exit(1);
}
df = functions + i;
altdone = statements + numstatements;
for (j = i+1; j < numfunctions; j++)
{
if (functions[j].first_statement <= 0)
continue;
altdone = statements + functions[j].first_statement;
break;
}
findex = i;
start = *lastglobal;
// if (dfpred->first_statement <= 0 && df->first_statement > 0)
// start -= 1;
end = df->parm_start;
if (!end)
{
par = DecompileFindGlobal(name);
if (par)
end = par - globals;
}
*lastglobal = max(*lastglobal, end + df->locals);
//print globals leading up to the function.
for (j = start; j < end; j++)
{
par = DecompileGetParameter((gofs_t)j);
if (par)
{
if (par->type & DEF_SAVEGLOBAL)
par->type -= DEF_SAVEGLOBAL;
if (par->type == ev_function)
{
if (strcmp(strings + par->s_name, "IMMEDIATE") && strcmp(strings + par->s_name, ".imm"))
{
if (strcmp(strings + par->s_name, name))
{
int f = ((int*)pr_globals)[par->ofs];
//DecompileGetFunctionIdxByName(strings + par->s_name);
if (f && strcmp(strings+functions[f].s_name, strings + par->s_name))
{
char *s = strrchr(DecompileProfiles[f], ' ');
//happens with void() func = otherfunc;
//such functions thus don't have their own type+body
*s = 0;
QCC_CatVFile(Decompileofile, "var %s %s = %s;\n", DecompileProfiles[f], strings + par->s_name, s+1);
*s = ' ';
}
else
QCC_CatVFile(Decompileofile, "%s;\n", DecompileProfiles[f]);
}
}
}
else if (par->type != ev_pointer)
{
if (strcmp(strings + par->s_name, "IMMEDIATE") && strcmp(strings + par->s_name, ".imm"))
{
if (par->type == ev_field)
{
ef = GetField(strings + par->s_name);
if (!ef)
{
QCC_CatVFile(Decompileofile, "var .unknowntype %s;\n", strings + par->s_name);
printf("Fatal Error: Could not locate a field named \"%s\"\n", strings + par->s_name);
}
else
{
//if (ef->type == ev_vector)
// j += 2;
matchingfield = GetMatchingField(ef);
#ifndef DONT_USE_DIRTY_TRICKS //could try scanning for an op_address+op_storep_fnc pair
if ((ef->type == ev_function) && !strcmp(strings + ef->s_name, "th_pain"))
{
QCC_CatVFile(Decompileofile, ".void(entity attacker, float damage) th_pain;\n");
}
else
#endif
{
if (matchingfield)
QCC_CatVFile(Decompileofile, "var .%s %s = %s;\n", type_name(ef), strings + ef->s_name, matchingfield);
else
QCC_CatVFile(Decompileofile, ".%s %s;\n", type_name(ef), strings + ef->s_name);
// fprintf(Decompileofile, "//%i %i %i %i\n", ef->ofs, ((int*)pr_globals)[ef->ofs], par->ofs, ((int*)pr_globals)[par->ofs]);
}
}
}
else
{
if (par->type == ev_vector)
j += 2;
if (par->type == ev_entity || par->type == ev_void)
{
QCC_CatVFile(Decompileofile, "%s %s;\n", type_name(par), strings + par->s_name);
}
else
{
line[0] = '\0';
QC_snprintfz(line, sizeof(line), "%s", DecompileValueString((etype_t)(par->type), &pr_globals[par->ofs]));
if (IsConstant(par))
{
QCC_CatVFile(Decompileofile, "%s %s = %s;\n", type_name(par), strings + par->s_name, line);
}
else
{
if (pr_globals[par->ofs] != 0)
QCC_CatVFile(Decompileofile, "%s %s /* = %s */;\n", type_name(par), strings + par->s_name, line);
else
QCC_CatVFile(Decompileofile, "%s %s;\n", type_name(par), strings + par->s_name, line);
}
}
}
}
}
}
}
/*
* Check ''local globals''
*/
if (df->first_statement <= 0)
{
QCC_CatVFile(Decompileofile, "%s", DecompileProfiles[findex]);
QCC_CatVFile(Decompileofile, " = #%i; \n", -df->first_statement);
return;
}
ds = statements + df->first_statement;
while (1)
{
dom = (ds->op) % OP_MARK_END_ELSE;
if (!dom || ds == altdone)
break;
else if (dom == OP_GOTO)
{
// check for i-t-e
if ((signed int)ds->a > 0)
{
ts = ds + (signed int)ds->a;
ts->op += OP_MARK_END_ELSE; // mark the end of a if/ite construct
}
else
{
ts = ds + (signed int)ds->a;
//if its a negative goto then it should normally be the end of a while{} loop. if we can't find the while statement itself, then its an infinite loop
for (k = (ts); k < ds; k++)
{
tom = k->op % OP_MARK_END_ELSE;
if (tom == OP_IF_I || tom == OP_IFNOT_I ||
tom == OP_IF_F || tom == OP_IFNOT_F ||
tom == OP_IF_S || tom == OP_IFNOT_S)
{
if (k + (signed int)k->b == ds+1)
break;
}
}
if (k == ds)
{
ds->op += OPD_GOTO_WHILE1-OP_GOTO;
ts->op += OP_MARK_END_DO;
}
}
}
else if (dom == OP_IFNOT_I || dom == OP_IFNOT_F || dom == OP_IFNOT_S)
{
// check for pure if
ts = ds + (signed int)ds->b;
tom = (ts - 1)->op % OP_MARK_END_ELSE;
if (tom != OP_GOTO)
ts->op += OP_MARK_END_ELSE; // mark the end of a if construct
else if ((signed int)(ts - 1)->a < 0)
{
if (((signed int)(ts - 1)->a + (signed int)ds->b) > 1)
{
// pure if
ts->op += OP_MARK_END_ELSE; // mark the end of a if/ite construct
}
else
{
dum = 1;
for (k = (ts - 1) + (signed int)((ts - 1)->a); k < ds; k++)
{
tom = k->op % OP_MARK_END_ELSE;
if (tom == OP_GOTO ||
tom == OP_IF_I || tom == OP_IFNOT_I ||
tom == OP_IF_F || tom == OP_IFNOT_F ||
tom == OP_IF_S || tom == OP_IFNOT_S)
dum = 0;
}
if (!dum)
{
// pure if
ts->op += OP_MARK_END_ELSE; // mark the end of a if/ite construct
}
}
}
}
else if (dom == OP_IF_I || dom == OP_IF_F || dom == OP_IF_S)
{
if ((signed int)ds->b<1)
{
ts = ds + (signed int)ds->b;
//this is some kind of loop, either a while or for.
//if the statement before the 'do' is a forwards goto, and it jumps to within the loop (instead of after), then we have to assume that it is a for loop and not a loop inside an else block.
if ((ts-1)->op%OP_MARK_END_ELSE == OP_GOTO && (signed int)(ts-1)->a > 0 && (ts-1)+(signed int)(ts-1)->a <= ds)
{
(--ts)->op += OPD_GOTO_FORSTART - OP_GOTO;
//because it was earlier, we need to unmark that goto's target as an end_else
ts = ts + (signed int)ts->a;
ts->op -= OP_MARK_END_ELSE;
}
else
ts->op += OP_MARK_END_DO; // mark the start of a do construct
}
else
{
ts = ds + ds->b;
if ((ts-1)->op%OP_MARK_END_ELSE != OP_GOTO)
ts->op += OP_MARK_END_ELSE; // mark the end of an if construct
else if ((signed int)(ts - 1)->a < 0)
{
if (((signed int)(ts - 1)->a + (signed int)ds->b) > 1)
{
// pure if
ts->op += OP_MARK_END_ELSE; // mark the end of a if/ite construct
}
else
{
dum = 1;
for (k = (ts - 1) + (signed int)((ts - 1)->a); k < ds; k++)
{
tom = k->op % OP_MARK_END_ELSE;
if (tom == OP_GOTO ||
tom == OP_IF_I || tom == OP_IFNOT_I ||
tom == OP_IF_F || tom == OP_IFNOT_F ||
tom == OP_IF_S || tom == OP_IFNOT_S)
dum = 0;
}
if (!dum)
{
// pure if
ts->op += OP_MARK_END_ELSE; // mark the end of a if/ite construct
}
}
}
}
}
ds++;
}
/*
* print the prototype
*/
QCC_CatVFile(Decompileofile, "\n%s", DecompileProfiles[findex]);
// handle state functions
ds = statements + df->first_statement;
if (ds->op == OP_STATE)
{
par = DecompileGetParameter(ds->a);
if (!par)
{
static QCC_ddef_t pars;
//must be a global (gotta be a float), create the def as needed
pars.ofs = ds->a;
pars.s_name = "IMMEDIATE"-strings;
pars.type = ev_float;
par = &pars;
// printf("Fatal Error - Can't determine frame number.");
// exit(1);
}
arg2 = DecompileGet(df, ds->b, NULL);
if (!arg2)
{
printf("Fatal Error - No state parameter with offset %i.", ds->b);
exit(1);
}
QCC_CatVFile(Decompileofile, " = [ %s, %s ]", DecompileValueString((etype_t)(par->type), &pr_globals[par->ofs]), arg2);
free(arg2);
}
else
{
QCC_CatVFile(Decompileofile, " =");
}
QCC_CatVFile(Decompileofile, "\n{\n");
startpos = Decompileofile->fsize;
/*
fprintf(Decompileprofile, "%s", DecompileProfiles[findex]);
fprintf(Decompileprofile, ") %s;\n", name);
*/
/*
* calculate the parameter size
*/
for (j = 0, ps = 0; j < df->numparms; j++)
{
par = DecompileGetParameter((gofs_t)(df->parm_start + ps));
if (par)
{
if (!strings[par->s_name])
{
QC_snprintfz(line, sizeof(line), "_p_%i", par->ofs);
arg2 = malloc(strlen(line)+1);
strcpy(arg2, line);
par->s_name = arg2 - strings;
}
}
ps += df->parm_size[j];
}
/*
* print the locals
*/
if (df->locals > 0)
{
if ((df->parm_start) + df->locals - 1 >= (df->parm_start) + ps)
{
for (i = df->parm_start + ps; i < (df->parm_start) + df->locals; i++)
{
par = DecompileGetParameter((gofs_t)i);
if (!par)
{
// temps, or stripped...
continue;
}
else
{
if (!strcmp(strings + par->s_name, "IMMEDIATE") || !strcmp(strings + par->s_name, ".imm"))
continue; // immediates don't belong
if (!strings[par->s_name])
{
QC_snprintfz(line, sizeof(line), "_l_%i", par->ofs);
arg2 = malloc(strlen(line)+1);
strcpy(arg2, line);
par->s_name = arg2 - strings;
}
if (par->type == ev_function)
{
printf("Warning Fields and functions must be global\n");
}
else
{
if (((int*)pr_globals)[par->ofs])
QCC_CatVFile(Decompileofile, "\tlocal %s = %s;\n", DecompilePrintParameter(par), DecompileValueString(par->type, &pr_globals[par->ofs]));
else
QCC_CatVFile(Decompileofile, "\tlocal %s;\n", DecompilePrintParameter(par));
}
if (par->type == ev_vector)
i += 2;
}
}
QCC_CatVFile(Decompileofile, "\n");
}
}
/*
* do the hard work
*/
if (!DecompileDecompileFunction(df, altdone))
{
QCC_InsertVFile(Decompileofile, startpos, "#error Corrupt Function: %s\n#if 0\n", strings+df->s_name);
QCC_CatVFile(Decompileofile, "#endif\n");
}
QCC_CatVFile(Decompileofile, "};\n");
}
extern boolean safedecomp;
int fake_name;
char synth_name[1024]; // fake name part2
boolean TrySynthName(const char *first)
{
int i;
// try to figure out the filename
// based on the first function in the file
for (i=0; i < FILELISTSIZE; i+=2)
{
if (!strcmp(filenames[i], first))
{
QC_snprintfz(synth_name, sizeof(synth_name), filenames[i + 1]);
return true;
}
}
return false;
}
void DecompileDecompileFunctions(const char *origcopyright)
{
int i;
unsigned int o;
dfunction_t *d;
boolean bogusname;
vfile_t *f;
char fname[512];
int lastglob = 1;
DecompileCalcProfiles();
AddSourceFile(NULL, "progs.src");
Decompileprogssrc = QCC_AddVFile("progs.src", NULL, 0);
if (!Decompileprogssrc)
{
printf("Fatal Error - Could not open \"progs.src\" for output.\n");
exit(1);
}
QCC_CatVFile(Decompileprogssrc, "./progs.dat\n\n");
QCC_CatVFile(Decompileprogssrc, "#pragma flag enable lax //remove this line once you've fixed up any decompiler bugs...\n");
if (origcopyright)
QCC_CatVFile(Decompileprogssrc, "//#pragma copyright \"%s\"\n", origcopyright);
QCC_CatVFile(Decompileprogssrc, "\n", origcopyright);
for (i = 1; i < numfunctions; i++)
{
d = &functions[i];
fname[0] = '\0';
if (d->s_file <= strofs && d->s_file >= 0)
sprintf(fname, "%s", strings + d->s_file);
// FrikaC -- not sure if this is cool or what?
bogusname = false;
if (strlen(fname) <= 0)
bogusname = true;
else for (o = 0; o < strlen(fname); o++)
{
if ((fname[o] < 'a' || fname[o] > 'z') &&
(fname[o] < '0' || fname[o] > '9') &&
(fname[o] <'A' || fname[o] > 'Z') &&
(fname[o] != '.' && fname[o] != '!' && fname[o] != '_'))
{
if (fname[o] == '/')
fname[o] = '.';
else if (fname[o] == '\\')
fname[o] = '.';
else
{
bogusname = true;
break;
}
}
}
if (bogusname)
{
if (*fname && !DecompileAlreadySeen(fname, NULL))
{
synth_name[0] = 0;
}
if(!TrySynthName(qcva("%s", strings + d->s_name)) && !synth_name[0])
QC_snprintfz(synth_name, sizeof(synth_name), "frik%i.qc", fake_name++);
QC_snprintfz(fname, sizeof(fname), synth_name);
}
else
synth_name[0] = 0;
if (!DecompileAlreadySeen(fname, &f))
{
printf("decompiling %s\n", fname);
compilecb();
QCC_CatVFile(Decompileprogssrc, "%s\n", fname);
}
if (!f)
{
printf("Fatal Error - Could not open \"%s\" for output.\n", fname);
exit(1);
}
Decompileofile = f;
DecompileFunction(strings + d->s_name, &lastglob);
}
}
void DecompileProgsDat(char *name, void *buf, size_t bufsize)
{
char *c = ReadProgsCopyright(buf, bufsize);
if (c)
printf("Copyright: %s\n", c);
PreCompile();
pHash_Get = &Hash_Get;
pHash_GetNext = &Hash_GetNext;
pHash_Add = &Hash_Add;
pHash_RemoveData = &Hash_RemoveData;
Hash_InitTable(&typedeftable, 1024, qccHunkAlloc(Hash_BytesForBuckets(1024)));
maxtypeinfos = 64;
qcc_typeinfo = (void *)malloc(sizeof(QCC_type_t)*maxtypeinfos);
numtypeinfos = 0;
type_void = QCC_PR_NewType("void", ev_void, true);
type_string = QCC_PR_NewType("string", ev_string, true);
type_float = QCC_PR_NewType("float", ev_float, true);
type_vector = QCC_PR_NewType("vector", ev_vector, true);
type_entity = QCC_PR_NewType("entity", ev_entity, true);
type_field = QCC_PR_NewType("__field", ev_field, false);
type_function = QCC_PR_NewType("__function", ev_function, false);
type_function->aux_type = type_void;
type_pointer = QCC_PR_NewType("__pointer", ev_pointer, false);
type_integer = QCC_PR_NewType("__integer", ev_integer, true);
type_variant = QCC_PR_NewType("variant", ev_variant, true);
type_variant = QCC_PR_NewType("__variant", ev_variant, true);
DecompileReadData(name, buf, bufsize);
DecompileDecompileFunctions(c);
printf("Done.");
}
char *DecompileGlobalStringNoContents(gofs_t ofs)
{
int i;
QCC_ddef_t *def;
static char line[128];
line[0] = '0';
QC_snprintfz(line, sizeof(line), "%i(??""?)", ofs);
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
if (def->ofs == ofs)
{
line[0] = '0';
QC_snprintfz(line, sizeof(line), "%i(%s)", def->ofs, strings + def->s_name);
break;
}
}
i = strlen(line);
for (; i < 16; i++)
strcat(line, " ");
strcat(line, " ");
return line;
}
char *DecompileGlobalString(gofs_t ofs)
{
char *s;
int i;
QCC_ddef_t *def;
static char line[128];
line[0] = '0';
QC_snprintfz(line, sizeof(line), "%i(??""?)", ofs);
for (i = 0; i < numglobaldefs; i++)
{
def = &globals[i];
if (def->ofs == ofs)
{
line[0] = '0';
if (!strcmp(strings + def->s_name, "IMMEDIATE") || !strcmp(strings + def->s_name, ".imm"))
{
s = PR_ValueString((etype_t)(def->type), &pr_globals[ofs]);
QC_snprintfz(line, sizeof(line), "%i(%s)", def->ofs, s);
}
else
QC_snprintfz(line, sizeof(line), "%i(%s)", def->ofs, strings + def->s_name);
}
}
i = strlen(line);
for (; i < 16; i++)
strcat(line, " ");
strcat(line, " ");
return line;
}
void DecompilePrintStatement(dstatement_t * s)
{
int i;
printf("%4i : %s ", (int)(s - statements), pr_opcodes[s->op].opname);
i = strlen(pr_opcodes[s->op].opname);
for (; i < 10; i++)
printf(" ");
if (s->op == OP_IF_I || s->op == OP_IFNOT_I ||
s->op == OP_IF_F || s->op == OP_IFNOT_F ||
s->op == OP_IF_S || s->op == OP_IFNOT_S)
printf("%sbranch %i", DecompileGlobalString(s->a), s->b);
else if (s->op == OP_GOTO)
{
printf("branch %i", s->a);
}
else if ((unsigned)(s->op - OP_STORE_F) < 6)
{
printf("%s", DecompileGlobalString(s->a));
printf("%s", DecompileGlobalStringNoContents(s->b));
}
else
{
if (s->a)
printf("%s", DecompileGlobalString(s->a));
if (s->b)
printf("%s", DecompileGlobalString(s->b));
if (s->c)
printf("%s", DecompileGlobalStringNoContents(s->c));
}
printf("\n");
}
void DecompilePrintFunction(char *name)
{
int i;
dstatement_t *ds;
dfunction_t *df;
for (i = 0; i < numfunctions; i++)
if (!strcmp(name, strings + functions[i].s_name))
break;
if (i == numfunctions)
{
printf("Fatal Error: No function names \"%s\"\n", name);
exit(1);
}
df = functions + i;
printf("Statements for %s:\n", name);
ds = statements + df->first_statement;
while (1)
{
DecompilePrintStatement(ds);
if (!ds->op)
break;
ds++;
}
}
Reference in a new issue View git blame Copy permalink