mirror of
https://github.com/DrBeef/ioq3quest.git
synced 2024-11-10 14:52:00 +00:00
new x86_64 vm that doesn't use gas
This commit is contained in:
Ludwig Nussel
parent
64239037e0
commit
fbe65853e4
3 changed files with 1555 additions and 20 deletions
4
Makefile
4
Makefile
|
|
@ -1059,7 +1059,7 @@ ifeq ($(HAVE_VM_COMPILED),true)
|
|||
Q3OBJ += $(B)/client/vm_x86.o
|
||||
endif
|
||||
ifeq ($(ARCH),x86_64)
|
||||
Q3OBJ += $(B)/client/vm_x86_64.o
|
||||
Q3OBJ += $(B)/client/vm_x86_64.o $(B)/client/vm_x86_64_assembler.o
|
||||
endif
|
||||
ifeq ($(ARCH),ppc)
|
||||
Q3OBJ += $(B)/client/vm_ppc.o
|
||||
|
|
@ -1223,7 +1223,7 @@ ifeq ($(HAVE_VM_COMPILED),true)
|
|||
Q3DOBJ += $(B)/ded/vm_x86.o
|
||||
endif
|
||||
ifeq ($(ARCH),x86_64)
|
||||
Q3DOBJ += $(B)/ded/vm_x86_64.o
|
||||
Q3DOBJ += $(B)/ded/vm_x86_64.o $(B)/client/vm_x86_64_assembler.o
|
||||
endif
|
||||
ifeq ($(ARCH),ppc)
|
||||
Q3DOBJ += $(B)/ded/vm_ppc.o
|
||||
|
|
|
|||
|
|
@ -28,9 +28,15 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/time.h>
|
||||
#include <time.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <stdarg.h>
|
||||
|
||||
//#define USE_GAS
|
||||
//#define DEBUG_VM
|
||||
|
||||
#ifdef DEBUG_VM
|
||||
#define Dfprintf(fd, args...) fprintf(fd, ##args)
|
||||
|
|
@ -39,6 +45,19 @@ static FILE* qdasmout;
|
|||
#define Dfprintf(args...)
|
||||
#endif
|
||||
|
||||
#define VM_X86_64_MMAP
|
||||
|
||||
#ifndef USE_GAS
|
||||
void assembler_set_output(char* buf);
|
||||
size_t assembler_get_code_size(void);
|
||||
void assembler_init(int pass);
|
||||
void assemble_line(const char* input, size_t len);
|
||||
#ifdef Dfprintf
|
||||
#undef Dfprintf
|
||||
#define Dfprintf(args...)
|
||||
#endif
|
||||
#endif // USE_GAS
|
||||
|
||||
static void VM_Destroy_Compiled(vm_t* self);
|
||||
|
||||
/*
|
||||
|
|
@ -206,8 +225,29 @@ static unsigned char op_argsize[256] =
|
|||
[OP_BLOCK_COPY] = 4,
|
||||
};
|
||||
|
||||
#ifdef USE_GAS
|
||||
#define emit(x...) \
|
||||
do { fprintf(fh_s, ##x); fputc('\n', fh_s); } while(0)
|
||||
#else
|
||||
void emit(const char* fmt, ...)
|
||||
{
|
||||
va_list ap;
|
||||
char line[4096];
|
||||
va_start(ap, fmt);
|
||||
vsnprintf(line, sizeof(line), fmt, ap);
|
||||
va_end(ap);
|
||||
assemble_line(line, strlen(line));
|
||||
}
|
||||
#endif // USE_GAS
|
||||
|
||||
#ifdef USE_GAS
|
||||
#define JMPIARG \
|
||||
emit("jmp i_%08x", iarg);
|
||||
#else
|
||||
#define JMPIARG \
|
||||
emit("movq $%lu, %%rax", vm->codeBase+vm->instructionPointers[iarg]); \
|
||||
emit("jmpq *%rax");
|
||||
#endif
|
||||
|
||||
// integer compare and jump
|
||||
#define IJ(op) \
|
||||
|
|
@ -215,7 +255,8 @@ static unsigned char op_argsize[256] =
|
|||
emit("movl 4(%%rsi), %%eax"); \
|
||||
emit("cmpl 8(%%rsi), %%eax"); \
|
||||
emit(op " i_%08x", instruction+1); \
|
||||
emit("jmp i_%08x", iarg);
|
||||
JMPIARG \
|
||||
neednilabel = 1;
|
||||
|
||||
#ifdef USE_X87
|
||||
#define FJ(bits, op) \
|
||||
|
|
@ -225,7 +266,8 @@ static unsigned char op_argsize[256] =
|
|||
emit("fnstsw %%ax");\
|
||||
emit("testb $" #bits ", %%ah");\
|
||||
emit(op " i_%08x", instruction+1);\
|
||||
emit("jmp i_%08x", iarg);
|
||||
JMPIARG \
|
||||
neednilabel = 1;
|
||||
#define XJ(x)
|
||||
#else
|
||||
#define FJ(x, y)
|
||||
|
|
@ -235,7 +277,8 @@ static unsigned char op_argsize[256] =
|
|||
emit("ucomiss 8(%%rsi), %%xmm0");\
|
||||
emit("jp i_%08x", instruction+1);\
|
||||
emit(op " i_%08x", instruction+1);\
|
||||
emit("jmp i_%08x", iarg);
|
||||
JMPIARG \
|
||||
neednilabel = 1;
|
||||
#endif
|
||||
|
||||
#define SIMPLE(op) \
|
||||
|
|
@ -292,9 +335,14 @@ static unsigned char op_argsize[256] =
|
|||
|
||||
static void* getentrypoint(vm_t* vm)
|
||||
{
|
||||
#ifdef USE_GAS
|
||||
return vm->codeBase+64; // skip ELF header
|
||||
#else
|
||||
return vm->codeBase;
|
||||
#endif // USE_GAS
|
||||
}
|
||||
|
||||
#ifdef USE_GAS
|
||||
char* mmapfile(const char* fn, size_t* size)
|
||||
{
|
||||
int fd = -1;
|
||||
|
|
@ -382,6 +430,7 @@ static int doas(char* in, char* out, unsigned char** compiledcode)
|
|||
|
||||
return size;
|
||||
}
|
||||
#endif // USE_GAS
|
||||
|
||||
static void block_copy_vm(unsigned dest, unsigned src, unsigned count)
|
||||
{
|
||||
|
|
@ -410,8 +459,13 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
char* code;
|
||||
unsigned iarg = 0;
|
||||
unsigned char barg = 0;
|
||||
void* entryPoint;
|
||||
int neednilabel = 0;
|
||||
struct timeval tvstart = {0, 0};
|
||||
|
||||
#ifdef USE_GAS
|
||||
byte* compiledcode;
|
||||
int compiledsize;
|
||||
void* entryPoint;
|
||||
char fn_s[2*MAX_QPATH]; // output file for assembler code
|
||||
char fn_o[2*MAX_QPATH]; // file written by as
|
||||
#ifdef DEBUG_VM
|
||||
|
|
@ -419,16 +473,16 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
#endif
|
||||
FILE* fh_s;
|
||||
int fd_s, fd_o;
|
||||
byte* compiledcode;
|
||||
int compiledsize;
|
||||
|
||||
gettimeofday(&tvstart, NULL);
|
||||
|
||||
Com_Printf("compiling %s\n", vm->name);
|
||||
|
||||
#ifdef DEBUG_VM
|
||||
snprintf(fn_s, sizeof(fn_s), "%.63s.s", vm->name);
|
||||
snprintf(fn_o, sizeof(fn_o), "%.63s.o", vm->name);
|
||||
fd_s = open(fn_s, O_CREAT|O_WRONLY, 0644);
|
||||
fd_o = open(fn_o, O_CREAT|O_WRONLY, 0644);
|
||||
fd_s = open(fn_s, O_CREAT|O_WRONLY|O_TRUNC, 0644);
|
||||
fd_o = open(fn_o, O_CREAT|O_WRONLY|O_TRUNC, 0644);
|
||||
#else
|
||||
snprintf(fn_s, sizeof(fn_s), "/tmp/%.63s.s_XXXXXX", vm->name);
|
||||
snprintf(fn_o, sizeof(fn_o), "/tmp/%.63s.o_XXXXXX", vm->name);
|
||||
|
|
@ -462,25 +516,50 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
return;
|
||||
}
|
||||
|
||||
// translate all instructions
|
||||
pc = 0;
|
||||
code = (char *)header + header->codeOffset;
|
||||
|
||||
emit("start:");
|
||||
emit("or %%r8, %%r8"); // check whether to set up instruction pointers
|
||||
emit("jnz main");
|
||||
emit("jmp setupinstructionpointers");
|
||||
|
||||
emit("main:");
|
||||
#else // USE_GAS
|
||||
int pass;
|
||||
size_t compiledOfs = 0;
|
||||
|
||||
gettimeofday(&tvstart, NULL);
|
||||
|
||||
for (pass = 0; pass < 2; ++pass) {
|
||||
|
||||
if(pass)
|
||||
{
|
||||
compiledOfs = assembler_get_code_size();
|
||||
vm->codeLength = compiledOfs;
|
||||
vm->codeBase = mmap(NULL, compiledOfs, PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
|
||||
if(vm->codeBase == (void*)-1)
|
||||
Com_Error(ERR_DROP, "VM_CompileX86: can't mmap memory");
|
||||
|
||||
assembler_set_output((char*)vm->codeBase);
|
||||
}
|
||||
|
||||
assembler_init(pass);
|
||||
|
||||
#endif // USE_GAS
|
||||
|
||||
// translate all instructions
|
||||
pc = 0;
|
||||
code = (char *)header + header->codeOffset;
|
||||
|
||||
for ( instruction = 0; instruction < header->instructionCount; ++instruction )
|
||||
{
|
||||
op = code[ pc ];
|
||||
++pc;
|
||||
|
||||
vm->instructionPointers[instruction] = pc;
|
||||
#ifndef USE_GAS
|
||||
vm->instructionPointers[instruction] = assembler_get_code_size();
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
/* store current instruction number in r15 for debugging */
|
||||
#if 1
|
||||
emit("nop");
|
||||
emit("movq $%d, %%r15", instruction);
|
||||
emit("nop");
|
||||
|
|
@ -501,7 +580,17 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
{
|
||||
Dfprintf(qdasmout, "%s\n", opnames[op]);
|
||||
}
|
||||
|
||||
#ifdef USE_GAS
|
||||
emit("i_%08x:", instruction);
|
||||
#else
|
||||
if(neednilabel)
|
||||
{
|
||||
emit("i_%08x:", instruction);
|
||||
neednilabel = 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
switch ( op )
|
||||
{
|
||||
case OP_UNDEF:
|
||||
|
|
@ -560,6 +649,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
// emit("frstor 4(%%rsi)");
|
||||
emit("addq $4, %%rsi");
|
||||
emit("movl %%eax, (%%rsi)"); // store return value
|
||||
neednilabel = 1;
|
||||
break;
|
||||
case OP_PUSH:
|
||||
emit("addq $4, %%rsi");
|
||||
|
|
@ -628,7 +718,8 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
emit("jp dojump_i_%08x", instruction);
|
||||
emit("jz i_%08x", instruction+1);
|
||||
emit("dojump_i_%08x:", instruction);
|
||||
emit("jmp i_%08x", iarg);
|
||||
JMPIARG
|
||||
neednilabel = 1;
|
||||
#endif
|
||||
break;
|
||||
case OP_LTF:
|
||||
|
|
@ -855,7 +946,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
#ifdef USE_GAS
|
||||
emit("setupinstructionpointers:");
|
||||
emit("movq $%lu, %%rax", (unsigned long)vm->instructionPointers);
|
||||
for ( instruction = 0; instruction < header->instructionCount; ++instruction )
|
||||
|
|
@ -888,8 +979,17 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
vm->codeBase = compiledcode; // remember to skip ELF header!
|
||||
vm->codeLength = compiledsize;
|
||||
|
||||
#else // USE_GAS
|
||||
}
|
||||
assembler_init(0);
|
||||
|
||||
if(mprotect(vm->codeBase, compiledOfs, PROT_READ|PROT_EXEC))
|
||||
Com_Error(ERR_DROP, "VM_CompileX86: mprotect failed");
|
||||
#endif // USE_GAS
|
||||
|
||||
vm->destroy = VM_Destroy_Compiled;
|
||||
|
||||
#ifdef USE_GAS
|
||||
entryPoint = getentrypoint(vm);
|
||||
|
||||
// __asm__ __volatile__ ("int3");
|
||||
|
|
@ -910,8 +1010,6 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
fclose(qdasmout);
|
||||
#endif
|
||||
|
||||
Com_Printf( "VM file %s compiled to %i bytes of code (%p - %p)\n", vm->name, vm->codeLength, vm->codeBase, vm->codeBase+vm->codeLength );
|
||||
|
||||
out:
|
||||
close(fd_o);
|
||||
|
||||
|
|
@ -922,12 +1020,30 @@ out:
|
|||
unlink(fn_s);
|
||||
}
|
||||
#endif
|
||||
#endif // USE_GAS
|
||||
|
||||
if(vm->compiled)
|
||||
{
|
||||
struct timeval tvdone = {0, 0};
|
||||
struct timeval dur = {0, 0};
|
||||
Com_Printf( "VM file %s compiled to %i bytes of code (%p - %p)\n", vm->name, vm->codeLength, vm->codeBase, vm->codeBase+vm->codeLength );
|
||||
|
||||
gettimeofday(&tvdone, NULL);
|
||||
timersub(&tvdone, &tvstart, &dur);
|
||||
Com_Printf( "compilation took %lu.%06lu seconds\n", dur.tv_sec, dur.tv_usec );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void VM_Destroy_Compiled(vm_t* self)
|
||||
{
|
||||
#ifdef USE_GAS
|
||||
munmap(self->codeBase, self->codeLength);
|
||||
#elif _WIN32
|
||||
VirtualFree(self->codeBase, self->codeLength, MEM_RELEASE);
|
||||
#else
|
||||
munmap(self->codeBase, self->codeLength);
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
1419
code/qcommon/vm_x86_64_assembler.c
Normal file
1419
code/qcommon/vm_x86_64_assembler.c
Normal file
File diff suppressed because it is too large
Load diff
Loading…
Reference in a new issue