mirror of
https://github.com/UberGames/ioef.git
synced 2024-11-24 13:11:30 +00:00
Use scaled indexing mode n=4 for addressing opStack, this way we can use the 8 bit offset value in %%bl to address an OPSTACK_SIZE of 1024 which was the old value.
This commit is contained in:
Thilo Schulz
parent
3f9ec83ce0
commit
61d6e6eb68
2 changed files with 84 additions and 84 deletions
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@ -24,7 +24,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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// don't change, this is hardcoded into x86 VMs, opStack protection relies
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// on this
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#define OPSTACK_SIZE 256
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#define OPSTACK_SIZE 1024
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#define OPSTACK_MASK (OPSTACK_SIZE-1)
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// don't change
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@ -77,7 +77,7 @@ static void VM_Destroy_Compiled(vm_t* self);
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rsi scratch
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rdi program frame pointer (programStack)
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r8 pointer data (vm->dataBase)
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r9 opStack data base (opStack)
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r9 opStack base (opStack)
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r10 start of generated code
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*/
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@ -257,10 +257,10 @@ void emit(const char* fmt, ...)
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#endif
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#define STACK_PUSH(bytes) \
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emit("addb $0x%x, %%bl", bytes); \
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emit("addb $0x%x, %%bl", bytes >> 2); \
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#define STACK_POP(bytes) \
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emit("subb $0x%x, %%bl", bytes); \
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emit("subb $0x%x, %%bl", bytes >> 2); \
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#define CHECK_INSTR_REG(reg) \
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emit("cmpl $%u, %%"#reg, header->instructionCount); \
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@ -295,7 +295,7 @@ void emit(const char* fmt, ...)
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got_const = 0; \
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vm->instructionPointers[instruction-1] = assembler_get_code_size(); \
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STACK_PUSH(4); \
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emit("movl $%d, (%%r9, %%rbx, 1)", const_value); \
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emit("movl $%d, (%%r9, %%rbx, 4)", const_value); \
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}
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#else
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#define MAYBE_EMIT_CONST()
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@ -305,8 +305,8 @@ void emit(const char* fmt, ...)
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#define IJ(op) \
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MAYBE_EMIT_CONST(); \
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STACK_POP(8); \
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emit("movl 4(%%r9, %%rbx, 1), %%eax"); \
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emit("cmpl 8(%%r9, %%rbx, 1), %%eax"); \
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emit("movl 4(%%r9, %%rbx, 4), %%eax"); \
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emit("cmpl 8(%%r9, %%rbx, 4), %%eax"); \
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emit(op " i_%08x", instruction+1); \
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JMPIARG(); \
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neednilabel = 1
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@ -315,8 +315,8 @@ void emit(const char* fmt, ...)
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#define FJ(bits, op) \
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MAYBE_EMIT_CONST(); \
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STACK_POP(8); \
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emit("flds 4(%%r9, %%rbx, 1)");\
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emit("fcomps 8(%%r9, %%rbx, 1)");\
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emit("flds 4(%%r9, %%rbx, 4)");\
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emit("fcomps 8(%%r9, %%rbx, 4)");\
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emit("fnstsw %%ax");\
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emit("testb $" #bits ", %%ah");\
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emit(op " i_%08x", instruction+1);\
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@ -328,8 +328,8 @@ void emit(const char* fmt, ...)
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#define XJ(op) \
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MAYBE_EMIT_CONST(); \
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STACK_POP(8); \
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emit("movss 4(%%r9, %%rbx, 1), %%xmm0");\
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emit("ucomiss 8(%%r9, %%rbx, 1), %%xmm0");\
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emit("movss 4(%%r9, %%rbx, 4), %%xmm0");\
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emit("ucomiss 8(%%r9, %%rbx, 4), %%xmm0");\
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emit("jp i_%08x", instruction+1);\
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emit(op " i_%08x", instruction+1);\
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JMPIARG(); \
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@ -338,35 +338,35 @@ void emit(const char* fmt, ...)
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#define SIMPLE(op) \
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MAYBE_EMIT_CONST(); \
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emit("movl (%%r9, %%rbx, 1), %%eax"); \
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emit("movl (%%r9, %%rbx, 4), %%eax"); \
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STACK_POP(4); \
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emit(op " %%eax, (%%r9, %%rbx, 1)")
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emit(op " %%eax, (%%r9, %%rbx, 4)")
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#ifdef USE_X87
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#define FSIMPLE(op) \
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MAYBE_EMIT_CONST(); \
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STACK_POP(4); \
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emit("flds (%%r9, %%rbx, 1)"); \
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emit(op " 4(%%r9, %%rbx, 1)"); \
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emit("fstps (%%r9, %%rbx, 1)")
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emit("flds (%%r9, %%rbx, 4)"); \
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emit(op " 4(%%r9, %%rbx, 4)"); \
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emit("fstps (%%r9, %%rbx, 4)")
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#define XSIMPLE(op)
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#else
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#define FSIMPLE(op)
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#define XSIMPLE(op) \
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MAYBE_EMIT_CONST(); \
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STACK_POP(4); \
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emit("movss (%%r9, %%rbx, 1), %%xmm0"); \
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emit(op " 4(%%r9, %%rbx, 1), %%xmm0"); \
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emit("movss %%xmm0, (%%r9, %%rbx, 1)")
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emit("movss (%%r9, %%rbx, 4), %%xmm0"); \
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emit(op " 4(%%r9, %%rbx, 4), %%xmm0"); \
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emit("movss %%xmm0, (%%r9, %%rbx, 4)")
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#endif
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#define SHIFT(op) \
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MAYBE_EMIT_CONST(); \
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STACK_POP(4); \
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emit("movl 4(%%r9, %%rbx, 1), %%ecx"); \
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emit("movl (%%r9, %%rbx, 1), %%eax"); \
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emit("movl 4(%%r9, %%rbx, 4), %%ecx"); \
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emit("movl (%%r9, %%rbx, 4), %%eax"); \
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emit(op " %%cl, %%eax"); \
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emit("movl %%eax, (%%r9, %%rbx, 1)")
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emit("movl %%eax, (%%r9, %%rbx, 4)")
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#ifdef DEBUG_VM
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#define NOTIMPL(x) \
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@ -564,7 +564,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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else
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{
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get instr from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get instr from stack
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STACK_POP(4);
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emit("orl %%eax, %%eax");
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@ -605,7 +605,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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emit("pop %%rdi");
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// emit("frstor 4(%%r9, %%rsi, 1)");
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STACK_PUSH(4);
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emit("movl %%eax, (%%r9, %%rbx, 1)"); // store return value
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emit("movl %%eax, (%%r9, %%rbx, 4)"); // store return value
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neednilabel = 1;
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break;
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case OP_PUSH:
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@ -623,7 +623,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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const_value = iarg;
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#else
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STACK_PUSH(4);
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emit("movl $%d, (%%r9, %%rbx, 1)", iarg);
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emit("movl $%d, (%%r9, %%rbx, 4)", iarg);
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#endif
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break;
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case OP_LOCAL:
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@ -631,7 +631,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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emit("movl %%edi, %%esi");
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emit("addl $%d,%%esi", iarg);
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STACK_PUSH(4);
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emit("movl %%esi, (%%r9, %%rbx, 1)");
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emit("movl %%esi, (%%r9, %%rbx, 4)");
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break;
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case OP_JUMP:
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if(got_const) {
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@ -639,7 +639,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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got_const = 0;
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JMPIARG();
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} else {
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get instr from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get instr from stack
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STACK_POP(4);
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PREPARE_JMP(eax);
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@ -685,8 +685,8 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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#ifndef USE_X87
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MAYBE_EMIT_CONST();
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STACK_POP(8);
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emit("movss 4(%%r9, %%rbx, 1), %%xmm0");
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emit("ucomiss 8(%%r9, %%rbx, 1), %%xmm0");
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emit("movss 4(%%r9, %%rbx, 4), %%xmm0");
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emit("ucomiss 8(%%r9, %%rbx, 4), %%xmm0");
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emit("jp dojump_i_%08x", instruction);
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emit("jz i_%08x", instruction+1);
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emit("dojump_i_%08x:", instruction);
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@ -712,54 +712,54 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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break;
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case OP_LOAD1:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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RANGECHECK(eax, 1);
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emit("movb (%%r8, %%rax, 1), %%al"); // deref into eax
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emit("andq $255, %%rax");
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emit("movl %%eax, (%%r9, %%rbx, 1)"); // store on stack
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emit("movl %%eax, (%%r9, %%rbx, 4)"); // store on stack
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break;
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case OP_LOAD2:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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RANGECHECK(eax, 2);
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emit("movw (%%r8, %%rax, 1), %%ax"); // deref into eax
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emit("movl %%eax, (%%r9, %%rbx, 1)"); // store on stack
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emit("movl %%eax, (%%r9, %%rbx, 4)"); // store on stack
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break;
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case OP_LOAD4:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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RANGECHECK(eax, 4); // not a pointer!?
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emit("movl (%%r8, %%rax, 1), %%eax"); // deref into eax
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emit("movl %%eax, (%%r9, %%rbx, 1)"); // store on stack
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emit("movl %%eax, (%%r9, %%rbx, 4)"); // store on stack
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break;
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case OP_STORE1:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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STACK_POP(8);
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emit("andq $255, %%rax");
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emit("movl 4(%%r9, %%rbx, 1), %%esi"); // get pointer from stack
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emit("movl 4(%%r9, %%rbx, 4), %%esi"); // get pointer from stack
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RANGECHECK(esi, 1);
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emit("movb %%al, (%%r8, %%rsi, 1)"); // store in memory
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break;
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case OP_STORE2:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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STACK_POP(8);
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emit("movl 4(%%r9, %%rbx, 1), %%esi"); // get pointer from stack
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emit("movl 4(%%r9, %%rbx, 4), %%esi"); // get pointer from stack
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RANGECHECK(esi, 2);
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emit("movw %%ax, (%%r8, %%rsi, 1)"); // store in memory
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break;
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case OP_STORE4:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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STACK_POP(8);
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emit("movl 4(%%r9, %%rbx, 1), %%esi"); // get pointer from stack
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emit("movl 4(%%r9, %%rbx, 4), %%esi"); // get pointer from stack
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RANGECHECK(esi, 4);
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emit("movl %%eax, (%%r8, %%rsi, 1)"); // store in memory
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break;
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case OP_ARG:
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MAYBE_EMIT_CONST();
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emit("movl (%%r9, %%rbx, 1), %%eax"); // get value from stack
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emit("movl (%%r9, %%rbx, 4), %%eax"); // get value from stack
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STACK_POP(4);
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emit("movl $0x%hx, %%esi", barg);
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emit("addl %%edi, %%esi");
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@ -779,8 +779,8 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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emit("andq $127, %%rsi"); // |
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emit("subq %%rsi, %%rsp"); // <-+
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emit("push %%rsi");
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emit("movl 4(%%r9, %%rbx, 1), %%edi"); // 1st argument dest
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emit("movl 8(%%r9, %%rbx, 1), %%rsi"); // 2nd argument src
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emit("movl 4(%%r9, %%rbx, 4), %%edi"); // 1st argument dest
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emit("movl 8(%%r9, %%rbx, 4), %%rsi"); // 2nd argument src
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emit("movl $%d, %%edx", iarg); // 3rd argument count
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emit("movq $%"PRIu64", %%rax", (intptr_t) block_copy_vm);
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emit("callq *%%rax");
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@ -794,21 +794,21 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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break;
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case OP_SEX8:
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MAYBE_EMIT_CONST();
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emit("movw (%%r9, %%rbx, 1), %%ax");
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emit("movw (%%r9, %%rbx, 4), %%ax");
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emit("andq $255, %%rax");
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emit("cbw");
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emit("cwde");
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emit("movl %%eax, (%%r9, %%rbx, 1)");
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emit("movl %%eax, (%%r9, %%rbx, 4)");
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break;
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case OP_SEX16:
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MAYBE_EMIT_CONST();
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emit("movw (%%r9, %%rbx, 1), %%ax");
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emit("movw (%%r9, %%rbx, 4), %%ax");
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emit("cwde");
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emit("movl %%eax, (%%r9, %%rbx, 1)");
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emit("movl %%eax, (%%r9, %%rbx, 4)");
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break;
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case OP_NEGI:
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MAYBE_EMIT_CONST();
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emit("negl (%%r9, %%rbx, 1)");
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emit("negl (%%r9, %%rbx, 4)");
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break;
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case OP_ADD:
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SIMPLE("addl");
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@ -819,49 +819,49 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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case OP_DIVI:
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MAYBE_EMIT_CONST();
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STACK_POP(4);
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emit("movl (%%r9, %%rbx, 1), %%eax");
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emit("movl (%%r9, %%rbx, 4), %%eax");
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emit("cdq");
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emit("idivl 4(%%r9, %%rbx, 1)");
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emit("movl %%eax, (%%r9, %%rbx, 1)");
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emit("idivl 4(%%r9, %%rbx, 4)");
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emit("movl %%eax, (%%r9, %%rbx, 4)");
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break;
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case OP_DIVU:
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MAYBE_EMIT_CONST();
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STACK_POP(4);
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emit("movl (%%r9, %%rbx, 1), %%eax");
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emit("movl (%%r9, %%rbx, 4), %%eax");
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emit("xorq %%rdx, %%rdx");
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emit("divl 4(%%r9, %%rbx, 1)");
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emit("movl %%eax, (%%r9, %%rbx, 1)");
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emit("divl 4(%%r9, %%rbx, 4)");
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emit("movl %%eax, (%%r9, %%rbx, 4)");
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break;
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case OP_MODI:
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MAYBE_EMIT_CONST();
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STACK_POP(4);
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emit("movl (%%r9, %%rbx, 1), %%eax");
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emit("movl (%%r9, %%rbx, 4), %%eax");
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emit("xorl %%edx, %%edx");
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emit("cdq");
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emit("idivl 4(%%r9, %%rbx, 1)");
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emit("movl %%edx, (%%r9, %%rbx, 1)");
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emit("idivl 4(%%r9, %%rbx, 4)");
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emit("movl %%edx, (%%r9, %%rbx, 4)");
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break;
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case OP_MODU:
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MAYBE_EMIT_CONST();
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STACK_POP(4);
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emit("movl (%%r9, %%rbx, 1), %%eax");
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emit("movl (%%r9, %%rbx, 4), %%eax");
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emit("xorl %%edx, %%edx");
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emit("divl 4(%%r9, %%rbx, 1)");
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emit("movl %%edx, (%%r9, %%rbx, 1)");
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emit("divl 4(%%r9, %%rbx, 4)");
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emit("movl %%edx, (%%r9, %%rbx, 4)");
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break;
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case OP_MULI:
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MAYBE_EMIT_CONST();
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STACK_POP(4);
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emit("movl (%%r9, %%rbx, 1), %%eax");
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emit("imull 4(%%r9, %%rbx, 1)");
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emit("movl %%eax, (%%r9, %%rbx, 1)");
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emit("movl (%%r9, %%rbx, 4), %%eax");
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emit("imull 4(%%r9, %%rbx, 4)");
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emit("movl %%eax, (%%r9, %%rbx, 4)");
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break;
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case OP_MULU:
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MAYBE_EMIT_CONST();
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STACK_POP(4);
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emit("movl (%%r9, %%rbx, 1), %%eax");
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emit("mull 4(%%r9, %%rbx, 1)");
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emit("movl %%eax, (%%r9, %%rbx, 1)");
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emit("movl (%%r9, %%rbx, 4), %%eax");
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emit("mull 4(%%r9, %%rbx, 4)");
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emit("movl %%eax, (%%r9, %%rbx, 4)");
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break;
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case OP_BAND:
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SIMPLE("andl");
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@ -874,7 +874,7 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
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break;
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case OP_BCOM:
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MAYBE_EMIT_CONST();
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emit("notl (%%r9, %%rbx, 1)");
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emit("notl (%%r9, %%rbx, 4)");
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break;
|
||||
case OP_LSH:
|
||||
SHIFT("shl");
|
||||
|
|
@ -888,12 +888,12 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
case OP_NEGF:
|
||||
MAYBE_EMIT_CONST();
|
||||
#ifdef USE_X87
|
||||
emit("flds (%%r9, %%rbx, 1)");
|
||||
emit("flds (%%r9, %%rbx, 4)");
|
||||
emit("fchs");
|
||||
emit("fstps (%%r9, %%rbx, 1)");
|
||||
emit("fstps (%%r9, %%rbx, 4)");
|
||||
#else
|
||||
emit("movl $0x80000000, %%eax");
|
||||
emit("xorl %%eax, (%%r9, %%rbx, 1)");
|
||||
emit("xorl %%eax, (%%r9, %%rbx, 4)");
|
||||
#endif
|
||||
break;
|
||||
case OP_ADDF:
|
||||
|
|
@ -915,27 +915,27 @@ void VM_Compile( vm_t *vm, vmHeader_t *header ) {
|
|||
case OP_CVIF:
|
||||
MAYBE_EMIT_CONST();
|
||||
#ifdef USE_X87
|
||||
emit("filds (%%r9, %%rbx, 1)");
|
||||
emit("fstps (%%r9, %%rbx, 1)");
|
||||
emit("filds (%%r9, %%rbx, 4)");
|
||||
emit("fstps (%%r9, %%rbx, 4)");
|
||||
#else
|
||||
emit("movl (%%r9, %%rbx, 1), %%eax");
|
||||
emit("movl (%%r9, %%rbx, 4), %%eax");
|
||||
emit("cvtsi2ss %%eax, %%xmm0");
|
||||
emit("movss %%xmm0, (%%r9, %%rbx, 1)");
|
||||
emit("movss %%xmm0, (%%r9, %%rbx, 4)");
|
||||
#endif
|
||||
break;
|
||||
case OP_CVFI:
|
||||
MAYBE_EMIT_CONST();
|
||||
#ifdef USE_X87
|
||||
emit("flds (%%r9, %%rbx, 1)");
|
||||
emit("fnstcw 4(%%r9, %%rbx, 1)");
|
||||
emit("movw $0x0F7F, 8(%%r9, %%rbx, 1)"); // round toward zero
|
||||
emit("fldcw 8(%%r9, %%rbx, 1)");
|
||||
emit("fistpl (%%r9, %%rbx, 1)");
|
||||
emit("fldcw 4(%%r9, %%rbx, 1)");
|
||||
emit("flds (%%r9, %%rbx, 4)");
|
||||
emit("fnstcw 4(%%r9, %%rbx, 4)");
|
||||
emit("movw $0x0F7F, 8(%%r9, %%rbx, 4)"); // round toward zero
|
||||
emit("fldcw 8(%%r9, %%rbx, 4)");
|
||||
emit("fistpl (%%r9, %%rbx, 4)");
|
||||
emit("fldcw 4(%%r9, %%rbx, 4)");
|
||||
#else
|
||||
emit("movss (%%r9, %%rbx, 1), %%xmm0");
|
||||
emit("movss (%%r9, %%rbx, 4), %%xmm0");
|
||||
emit("cvttss2si %%xmm0, %%eax");
|
||||
emit("movl %%eax, (%%r9, %%rbx, 1)");
|
||||
emit("movl %%eax, (%%r9, %%rbx, 4)");
|
||||
#endif
|
||||
break;
|
||||
default:
|
||||
|
|
@ -1094,7 +1094,7 @@ int VM_CallCompiled( vm_t *vm, int *args ) {
|
|||
: "g" (entryPoint), "g" (opStack), "g" (vm->dataBase), "g" (programStack)
|
||||
: "%rsi", "%rdi", "%rax", "%rbx", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r15", "%xmm0"
|
||||
);
|
||||
if(opStackRet != 4 || *opStack != 0xDEADBEEF)
|
||||
if(opStackRet != 1 || *opStack != 0xDEADBEEF)
|
||||
Com_Error(ERR_DROP, "opStack corrupted in compiled code (offset %ld)", opStackRet);
|
||||
|
||||
if ( programStack != stackOnEntry - 48 ) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue