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#include <stddef.h>
#include <stdio.h>
#include <signal.h>
#include <ucontext.h>
#include <string.h>
#include "debug.h"
#include "dynablock.h"
#include "x64emu.h"
#include "emu/x64emu_private.h"
#include "emu/x64run_private.h"
#include "dynarec/dynablock_private.h"
#include "dynarec_rv64_arch.h"
#include "dynarec_rv64_functions.h"
#include "dynarec_rv64_private.h"
//order might be important, so define SUPER for the right one
#define SUPER() \
GO(flags) \
GO(x87) \
GO(mmx) \
GO(sse) \
GO(ymm) \
typedef struct arch_flags_s
{
uint8_t ignore:1;
} arch_flags_t;
#define X87_ST_D 0
#define X87_ST_F 1
#define X87_ST_I64 2
#define XMM0 0
#define X870 XMM0 + 16
#define EMM0 XMM0 + 16
typedef struct arch_x87_s
{
int8_t delta; //up to +/-7
uint8_t x87; // 1bit is STx present
uint16_t x87_type; // 2bits per STx type
uint32_t x87_pos; //4bits per STx position (well, 3 would be enough)
} arch_x87_t;
typedef struct arch_mmx_s
{
uint8_t mmx; //1bit for each mmx reg present
} arch_mmx_t;
typedef struct arch_sse_s
{
uint16_t sse; //1bit for each sse reg present
} arch_sse_t;
typedef struct arch_ymm_s
{
uint16_t ymm0; // 1bit for ymm0
uint16_t ymm; // 1bit for each ymm present
uint64_t ymm_pos; // 4bits for position of each ymm present
} arch_ymm_t;
typedef struct arch_arch_s
{
#define GO(A) uint16_t A:1;
SUPER()
#undef GO
uint16_t unaligned:1;
uint16_t seq:10; // how many instruction on the same values
} arch_arch_t;
typedef struct arch_build_s
{
#define GO(A) uint8_t A:1;
SUPER()
#undef GO
uint8_t unaligned;
#define GO(A) arch_##A##_t A##_;
SUPER()
#undef GO
} arch_build_t;
static int arch_build(dynarec_rv64_t* dyn, int ninst, arch_build_t* arch)
{
memset(arch, 0, sizeof(arch_build_t));
// todo
// opcode can handle unaligned
arch->unaligned = dyn->insts[ninst].unaligned;
return arch->flags + arch->x87 + arch->mmx + arch->sse + arch->ymm + arch->unaligned;
}
size_t get_size_arch(dynarec_rv64_t* dyn)
{
arch_build_t build = {0};
arch_build_t previous = {0};
size_t sz = 0;
int seq = 0;
int nseq = 0;
int last = 0;
if(!dyn->size) return 0;
for(int i=0; i<dyn->size; ++i) {
last = arch_build(dyn, i, &build);
if((!memcmp(&build, &previous, sizeof(arch_build_t))) && (seq<((1<<10)-1)) && i) {
// same sequence, increment
++seq;
} else {
seq = 0;
++nseq;
memcpy(&previous, &build, sizeof(arch_build_t));
sz+=sizeof(arch_arch_t);
#define GO(A) if(build.A) sz+=sizeof(arch_##A##_t);
SUPER()
#undef GO
}
}
if(nseq==1 && !last)
return 0; //empty, no flags, no nothing
return sz;
}
static void build_next(arch_arch_t* arch, arch_build_t* build)
{
#define GO(A) arch->A = build->A;
SUPER()
#undef GO
arch->unaligned = build->unaligned;
arch->seq = 0;
void* p = ((void*)arch)+sizeof(arch_arch_t);
#define GO(A) \
if(arch->A) { \
memcpy(p, &build->A##_, sizeof(arch_ ##A##_t)); \
p+=sizeof(arch_##A##_t); \
}
SUPER()
#undef GO
}
static int sizeof_arch(arch_arch_t* arch)
{
int sz = sizeof(arch_arch_t);
#define GO(A) if(arch->A) sz+=sizeof(arch_##A##_t);
SUPER()
#undef GO
return sz;
}
void* populate_arch(dynarec_rv64_t* dyn, void* p, size_t sz)
{
arch_build_t build = {0};
arch_build_t previous = {0};
arch_arch_t* arch = p;
arch_arch_t* next = p;
int seq = 0;
for(int i=0; i<dyn->size; ++i) {
arch_build(dyn, i, &build);
if((!memcmp(&build, &previous, sizeof(arch_build_t))) && (seq<((1<<10)-1)) && i) {
// same sequence, increment
seq++;
arch->seq = seq;
} else {
arch = next;
build_next(arch, &build);
seq = 0;
memcpy(&previous, &build, sizeof(arch_build_t));
int sz = sizeof_arch(arch);
next = (arch_arch_t*)((uintptr_t)arch+sz);
}
}
return p;
}
void adjust_arch(dynablock_t* db, x64emu_t* emu, ucontext_t* p, uintptr_t x64pc)
{
if(!db->arch_size || !db->arch)
return;
int ninst = getX64AddressInst(db, x64pc);
dynarec_log(LOG_INFO, "adjust_arch(...), db=%p, x64pc=%p, nints=%d", db, (void*)x64pc, ninst);
if(ninst<0) {
dynarec_log(LOG_INFO, "\n");
return;
}
if(ninst==0) {
dynarec_log(LOG_INFO, "\n");
CHECK_FLAGS(emu);
return;
}
// look for state at ninst-1
arch_arch_t* arch = db->arch;
arch_arch_t* next = arch;
#define GO(A) arch_##A##_t* A = NULL;
SUPER()
#undef GO
int i = 0;
while(i<ninst-1) {
arch = next;
i += 1+arch->seq;
dynarec_log(LOG_INFO, "[ seq=%d%s%s%s%s%s ] ", arch->seq, arch->flags?" Flags":"", arch->x87?" x87":"", arch->mmx?" MMX":"", arch->sse?" SSE":"", arch->ymm?" YMM":"");
next = (arch_arch_t*)((uintptr_t)next + sizeof_arch(arch));
}
int sz = sizeof(arch_arch_t);
#define GO(A) \
if(arch->A) { \
A = (arch_##A##_t*)((uintptr_t)arch + sz); \
sz+=sizeof(arch_##A##_t); \
}
SUPER()
#undef GO
// todo
dynarec_log(LOG_INFO, "\n");
}
int arch_unaligned(dynablock_t* db, uintptr_t x64pc)
{
if(!db->arch_size || !db->arch)
return 0;
int ninst = getX64AddressInst(db, x64pc);
if(ninst<0) {
return 0;
}
// look for state at ninst
arch_arch_t* arch = db->arch;
arch_arch_t* next = arch;
int i = -1;
while(i<ninst) {
arch = next;
i += 1+arch->seq;
next = (arch_arch_t*)((uintptr_t)next + sizeof_arch(arch));
}
return arch->unaligned;
}
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