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#include <stdint.h>
#include <string.h>
#include "os.h"
#include "dynarec_private.h"
#include "emu/x64run_private.h"
#include "dynablock_private.h"
#include "dynarec_arch.h"
#include "custommem.h"
#include "debug.h"
#define RELOC_TBL64C 1
#define RELOC_TBL64ADDR 2
#define RELOC_TBL64RETENDBL 3
#define RELOC_CANCELBLOCK 4
#define RELOC_TBL64TBLJMPH 5
#define RELOC_TBL64TBLJMPL 6
typedef union reloc_s {
uint8_t type;
struct {
uint8_t type;
uint8_t C;
uint16_t idx;
} table64c;
struct {
uint8_t type;
uint8_t nothing;
uint16_t idx;
} table64addr;
struct {
uint8_t type;
uint8_t delta;
uint16_t idx;
} table64retendbl;
struct {
uint8_t type;
uint8_t deltah;
uint16_t idx;
} table64jmptblh;
struct {
uint32_t type:8;
uint32_t deltal:24;
} table64jmptbll;
uint32_t x;
} reloc_t;
void AddRelocTable64Const(dynarec_native_t* dyn, int ninst, native_consts_t C, int pass)
{
if(!dyn->need_reloc)
return;
if(isTable64(dyn, getConst(C)))
return;
if(pass<3) {
dyn->reloc_size++;
return;
}
// generating the reloc
reloc_t reloc = {0};
reloc.table64c.type = RELOC_TBL64C;
reloc.table64c.C = C;
reloc.table64c.idx = dyn->table64size;
dyn->relocs[dyn->reloc_size++] = reloc.x;
}
void AddRelocTable64RetEndBlock(dynarec_native_t* dyn, int ninst, uintptr_t addr, int pass)
{
if(!dyn->need_reloc)
return;
if(isTable64(dyn, getJumpTableAddress64(addr)))
return; // no need, already handled
// TODO: check iif addr is in current map
if(pass<3) {
dyn->reloc_size++;
return;
}
reloc_t reloc = {0};
intptr_t delta = addr-(dyn->start + dyn->isize);
if(delta>255 || delta<0) {
dynarec_log(LOG_INFO, "Warning Relocation Ret End Block not possible: delta=%lld, aborting block\n", delta);
dyn->abort = 1;
}
reloc.table64retendbl.type = RELOC_TBL64RETENDBL;
reloc.table64retendbl.delta = delta;
reloc.table64retendbl.idx = dyn->table64size;
dyn->relocs[dyn->reloc_size++] = reloc.x;
}
void AddRelocCancelBlock(dynarec_native_t* dyn, int ninst, int pass)
{
if(!dyn->need_reloc)
return;
if(pass<3) {
dyn->reloc_size++;
return;
}
reloc_t reloc = {0};
reloc.type = RELOC_CANCELBLOCK;
dyn->relocs[dyn->reloc_size++] = reloc.x;
}
void AddRelocTable64Addr(dynarec_native_t* dyn, int ninst, uintptr_t addr, int pass)
{
if(!dyn->need_reloc)
return;
if(isTable64(dyn, addr))
return; // no need, already handled
// check if addr is in the same mmap area
// else, use a cancel block instead
uintptr_t start;
int ok = 1;
if(!IsAddrFileMapped(dyn->start, NULL, &start))
ok = 0;
else {
uintptr_t end = start + SizeFileMapped(dyn->start);
if(addr<start || addr>=end)
ok = 0;
if(ok && ((addr-start)>=0x100000000LL))
ok = 0;
}
if(!ok) return AddRelocCancelBlock(dyn, ninst, pass);
if(pass<3) {
dyn->reloc_size++;
return;
}
reloc_t reloc = {0};
reloc.type = RELOC_TBL64ADDR;
reloc.table64addr.idx = dyn->table64size;
dyn->relocs[dyn->reloc_size++] = reloc.x;
}
void AddRelocTable64JmpTbl(dynarec_native_t* dyn, int ninst, uintptr_t addr, int pass)
{
if(!dyn->need_reloc)
return;
if(isTable64(dyn, getJumpTableAddress64(addr)))
return; // no need, already handled
// check if addr is in the same mmap area
// else, use a cancel block instead
uintptr_t start;
int ok = 1;
if(!IsAddrFileMapped(dyn->start, NULL, &start))
ok = 0;
else {
uintptr_t end = start + SizeFileMapped(dyn->start);
if(addr<start || addr>=end)
ok = 0;
if(ok && ((addr-start)>=0x100000000LL))
ok = 0;
}
if(!ok) return AddRelocCancelBlock(dyn, ninst, pass);
if(pass<3) {
dyn->reloc_size+=2;
return;
}
uintptr_t delta = addr - start;
reloc_t reloc = {0};
reloc.type = RELOC_TBL64TBLJMPH;
reloc.table64jmptblh.idx = dyn->table64size;
reloc.table64jmptblh.deltah = delta>>24;
dyn->relocs[dyn->reloc_size++] = reloc.x;
reloc.type = RELOC_TBL64TBLJMPL;
reloc.table64jmptbll.deltal = delta&0xffffff;
dyn->relocs[dyn->reloc_size++] = reloc.x;
}
int ApplyRelocs(dynablock_t* block, intptr_t delta_block, intptr_t delta_map, uintptr_t mapping_start)
{
if(!block || !block->relocs || !block->relocsize)
return 0;
size_t reloc_size = block->relocsize / sizeof(uint32_t);
reloc_t *relocs = block->relocs;
uint64_t *table64 = block->table64;
int idx;
int i = 0;
uintptr_t addr;
dynarec_log(LOG_DEBUG, "Will apply %zd reloc to dynablock starting at %p - %p\n", reloc_size, block->x64_addr, block->x64_addr + block->x64_size);
while(i<reloc_size) {
idx = -1;
switch(relocs[i].type) {
case RELOC_TBL64C:
idx = relocs[i].table64c.idx;
table64[idx] = getConst(relocs[i].table64c.C);
dynarec_log(LOG_DEBUG, "\tApply Relocs[%d]: TABLE64[%d]=Const:%d\n", i, idx, relocs[i].table64c.C);
break;
case RELOC_TBL64ADDR:
idx = relocs[i].table64addr.idx;
table64[idx] += delta_map;
dynarec_log(LOG_DEBUG, "\tApply Relocs[%d]: TABLE64[%d]=Addr in Map, delta=%zd\n", i, idx, delta_map);
break;
case RELOC_TBL64RETENDBL:
idx = relocs[i].table64retendbl.idx;
addr = (uintptr_t)block->x64_addr + block->x64_size + relocs[i].table64retendbl.delta;
table64[idx] = getJumpTableAddress64(addr);
dynarec_log(LOG_DEBUG, "\tApply Relocs[%d]: TABLE64[%d]=JmpTable64(%p)\n", i, idx, (void*)addr);
break;
case RELOC_CANCELBLOCK:
dynarec_log(LOG_DEBUG, "\tApply Relocs[%d]: Cancel Block\n", i);
block->dirty = 1;
block->hash = 0;
return 0;
case RELOC_TBL64TBLJMPH:
if(relocs[i+1].type!=RELOC_TBL64TBLJMPL)
return -2; // bad sequence
idx = relocs[i].table64jmptblh.idx;
addr = relocs[i].table64jmptblh.deltah;
addr = mapping_start + relocs[i+1].table64jmptbll.deltal + (addr<<24);
table64[idx] = getJumpTableAddress64(addr);
dynarec_log(LOG_DEBUG, "\tApply Relocs[%d,%d]: TABLE64[%d]=JmpTable64(%p)=%p\n", i, i+1, idx, (void*)addr, getJumpTableAddress64(addr));
break;
case RELOC_TBL64TBLJMPL:
break;
default:
dynarec_log(LOG_DEBUG, "\tUnknown Relocs[%d]: %d\n", i, relocs[i].type);
return -1;
}
if(idx!=-1) {
if(idx>=block->table64size) {
dynarec_log(LOG_NONE, "Warning: Reloc Table64 idx out of range (%d vs %d)\n", idx, block->table64size);
}
}
++i;
}
return 0;
}
int RelocsHaveCancel(dynablock_t* block)
{
if(!block->relocs || !block->relocsize)
return 0;
size_t reloc_size = block->relocsize/sizeof(uint32_t);
for(size_t i=0; i<reloc_size; ++i)
if(((reloc_t*)block->relocs)[i].type == RELOC_CANCELBLOCK)
return 1;
return 0;
}
uintptr_t RelocGetNext()
{
return getConst(const_native_next);
}
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