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#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include "debug.h"
#include "x64emu.h"
#include "box64context.h"
#include "symbols.h"
#include "dictionnary.h"
typedef struct onesymbol_s {
uintptr_t offs;
uint32_t sz;
// need to track type of symbol?
// need to track origin?
} onesymbol_t;
typedef struct versymbol_s {
int version; // -1 = no-version, 0=local, 1=global, X=versionned
const char* vername; // NULL or version name if version=X
onesymbol_t sym;
} versymbol_t;
typedef struct versymbols_s {
int sz;
int cap;
versymbol_t *syms;
} versymbols_t;
KHASH_MAP_IMPL_STR(mapsymbols, versymbols_t);
kh_mapsymbols_t* NewMapSymbols()
{
kh_mapsymbols_t* map = kh_init(mapsymbols);
return map;
}
void FreeMapSymbols(kh_mapsymbols_t** map)
{
if(!map || !(*map))
return;
versymbols_t *v;
kh_foreach_value_ref(*map, v, free(v->syms););
kh_destroy(mapsymbols, *map);
*map = NULL;
}
// Exact same version (ver<2 or vername if ver>=2)
static int SameVersion(versymbol_t* s, int ver, const char* vername)
{
if(ver<2)
return (s->version == ver)?1:0;
if(s->vername && !strcmp(s->vername, vername))
return 1;
return 0;
}
static versymbol_t* FindVersionLocal(versymbols_t* s)
{
if(!s || !s->sz)
return NULL;
for (int i=0; i<s->sz; ++i)
if(s->syms[i].version==0)
return &s->syms[i];
return NULL;
}
static versymbol_t* FindNoVersion(versymbols_t* s)
{
if(!s || !s->sz)
return NULL;
for (int i=0; i<s->sz; ++i)
if(s->syms[i].version==-1)
return &s->syms[i];
return NULL;
}
static versymbol_t* FindVersionGlobal(versymbols_t* s)
{
if(!s || !s->sz)
return NULL;
for (int i=0; i<s->sz; ++i)
if(s->syms[i].version==1)
return &s->syms[i];
return NULL;
}
static versymbol_t* FindVersion(versymbols_t* s, const char* vername)
{
if(!s || !s->sz)
return NULL;
for (int i=0; i<s->sz; ++i)
if(s->syms[i].vername && !strcmp(s->syms[i].vername, vername))
return &s->syms[i];
return NULL;
}
static versymbol_t* FindFirstVersion(versymbols_t* s)
{
if(!s || !s->sz)
return NULL;
for (int i=0; i<s->sz; ++i)
if(s->syms[i].version>1)
return &s->syms[i];
return NULL;
}
// Match version (so ver=0:0, ver=1:-1/1/X, ver=-1:any, ver=X:1/"name")
static versymbol_t* MatchVersion(versymbols_t* s, int ver, const char* vername, int local)
{
if(!s || !s->sz)
return NULL;
versymbol_t* ret = NULL;
if(ver==0) {
if(local) ret = FindVersionLocal(s);
if(!ret) ret = FindNoVersion(s);
if(!ret) ret = FindVersionGlobal(s);
return ret;
}
if(ver==-1) {
if(local) ret = FindVersionLocal(s);
if(!ret) ret = FindNoVersion(s);
if(!ret) ret = FindVersionGlobal(s);
if(!ret) ret = FindFirstVersion(s);
return ret;
}
if(ver==1) {
if(local) ret = FindVersionLocal(s);
if(!ret) ret = FindVersionGlobal(s);
if(!ret) ret = FindNoVersion(s);
if(!ret) ret = FindFirstVersion(s);
return ret;
}
ret = FindVersion(s, vername);
if(local && !ret) FindVersionLocal(s);
if(!ret) return FindVersionGlobal(s);
return ret;
}
void AddSymbol(kh_mapsymbols_t *mapsymbols, const char* name, uintptr_t addr, uint32_t sz, int ver, const char* vername)
{
int ret;
khint_t k = kh_put(mapsymbols, mapsymbols, name, &ret);
versymbols_t * v = &kh_val(mapsymbols, k);
if(ret) {v->sz = v->cap = 0; v->syms = NULL;}
// now check if that version already exist, and update record and exit if yes
for(int i=0; i<v->sz; ++i)
if(SameVersion(&v->syms[i], ver, vername)) {
v->syms[i].sym.offs = addr;
v->syms[i].sym.sz = sz;
return;
}
// add a new record
if(v->sz == v->cap) {
v->cap+=4;
v->syms = (versymbol_t*)realloc(v->syms, v->cap*sizeof(versymbol_t));
}
int idx = v->sz++;
v->syms[idx].version = ver;
v->syms[idx].vername = vername;
v->syms[idx].sym.offs = addr;
v->syms[idx].sym.sz = sz;
}
uintptr_t FindSymbol(kh_mapsymbols_t *mapsymbols, const char* name, int ver, const char* vername, int local)
{
if(!mapsymbols)
return 0;
khint_t k = kh_get(mapsymbols, mapsymbols, name);
if(k==kh_end(mapsymbols))
return 0;
versymbols_t * v = &kh_val(mapsymbols, k);
versymbol_t * s = MatchVersion(v, ver, vername, local);
if(s)
return s->sym.offs;
return 0;
}
void AddWeakSymbol(kh_mapsymbols_t *mapsymbols, const char* name, uintptr_t addr, uint32_t sz, int ver, const char* vername)
{
int ret;
khint_t k = kh_put(mapsymbols, mapsymbols, name, &ret);
versymbols_t * v = &kh_val(mapsymbols, k);
if(ret) {v->sz = v->cap = 0; v->syms = NULL;}
// now check if that version already exist, and exit if yes
for(int i=0; i<v->sz; ++i)
if(SameVersion(&v->syms[i], ver, vername)) {
return;
}
// add a new record
if(v->sz == v->cap) {
v->cap+=4;
v->syms = (versymbol_t*)realloc(v->syms, v->cap*sizeof(versymbol_t));
}
int idx = v->sz++;
v->syms[idx].version = ver;
v->syms[idx].vername = vername;
v->syms[idx].sym.offs = addr;
v->syms[idx].sym.sz = sz;
}
int GetSymbolStartEnd(kh_mapsymbols_t* mapsymbols, const char* name, uintptr_t* start, uintptr_t* end, int ver, const char* vername, int local)
{
if(!mapsymbols)
return 0;
khint_t k = kh_get(mapsymbols, mapsymbols, name);
if(k==kh_end(mapsymbols))
return 0;
versymbols_t * v = &kh_val(mapsymbols, k);
versymbol_t* s = MatchVersion(v, ver, vername, local);
if(s) {
*start = s->sym.offs;
*end = *start + s->sym.sz;
return 1;
}
return 0;
}
const char* GetSymbolName(kh_mapsymbols_t* mapsymbols, void* p, uintptr_t* start, uint32_t* sz, const char** vername)
{
uintptr_t addr = (uintptr_t)p;
versymbols_t *s;
kh_foreach_value_ref(mapsymbols, s,
for(int i=0; i<s->sz; ++i)
if((s->syms[i].sym.offs >= addr) && (s->syms[i].sym.offs+s->syms[i].sym.sz<addr)) {
*start = s->syms[i].sym.offs;
*sz = s->syms[i].sym.sz;
if(vername)
*vername = s->syms[i].vername;
return kh_key(mapsymbols, __i);
}
);
return NULL;
}
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