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Avoid deoptimizations

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copy 2014-06-17 01:38:39 +02:00
parent dac74191e6
commit 72cb53482a
8 changed files with 36 additions and 24 deletions
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2
src/arith.macro.js
View file

@ -59,7 +59,7 @@ v86.prototype.adc = function(dest_operand, source_operand, op_size)
var cf = this.getcf();
this.last_op1 = dest_operand;
this.last_op2 = source_operand;
this.last_add_result = this.last_result = dest_operand + source_operand + cf | 0;
this.last_add_result = this.last_result = (dest_operand + source_operand | 0) + cf | 0;
this.last_op_size = op_size;
this.flags_changed = flags_all;

6
src/const.js
View file

@ -100,11 +100,11 @@ flags_all = flag_carry | flag_parity | flag_adjust | flag_zero | flag_sign | fla
*
* @const
*/
OPSIZE_8 = 0x80,
OPSIZE_8 = 7,
/** @const */
OPSIZE_16 = 0x8000,
OPSIZE_16 = 15,
/** @const */
OPSIZE_32 = -0x80000000,
OPSIZE_32 = 31,
/** @const */
PSE_ENABLED = 128,

2
src/cpu.macro.js
View file

@ -269,7 +269,7 @@ function v86()
#include "instructions.macro.js"
#include "misc_instr.macro.js"
#undef unimpl
#define unimpl(x) this.debug.unimpl(x)
#define vm86_mode() (!!(this.flags & flag_vm))

1
src/instructions.macro.js
View file

@ -1,6 +1,5 @@
"use strict";
#undef unimpl
#define unimpl(x) cpu.debug.unimpl(x)
var

3
src/io.js
View file

@ -8,8 +8,7 @@
*/
function IO(memory)
{
var me = this,
memory_size = memory.size;
var memory_size = memory.size;
function get_port_description(addr)
{

34
src/memory.js
View file

@ -35,7 +35,7 @@ function Memory(buffer, memory_size)
}
// use by dynamic translator
this.mem_page_infos = new Uint8Array(1 << 20);
if(OP_TRANSLATION) this.mem_page_infos = new Uint8Array(1 << 20);
dbg_assert((memory_size & MMAP_BLOCK_SIZE - 1) === 0);
}
@ -207,7 +207,8 @@ Memory.prototype.write8 = function(addr, value)
this.debug_write(addr, 1, value);
var page = addr >>> MMAP_BLOCK_BITS;
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
if(OP_TRANSLATION) this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
if(this.memory_map_registered[page])
{
@ -228,8 +229,12 @@ Memory.prototype.write16 = function(addr, value)
this.debug_write(addr, 2, value);
var page = addr >>> MMAP_BLOCK_BITS;
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
this.mem_page_infos[addr + 1 >>> MMAP_BLOCK_BITS] |= MEM_PAGE_WRITTEN;
if(OP_TRANSLATION)
{
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
this.mem_page_infos[addr + 1 >>> MMAP_BLOCK_BITS] |= MEM_PAGE_WRITTEN;
}
if(this.memory_map_registered[page])
{
@ -252,7 +257,8 @@ Memory.prototype.write_aligned16 = function(addr, value)
this.debug_write(addr << 1, 2, value);
var page = addr >>> MMAP_BLOCK_BITS - 1;
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
if(OP_TRANSLATION) this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
if(this.memory_map_registered[page])
{
@ -275,8 +281,12 @@ Memory.prototype.write32 = function(addr, value)
this.debug_write(addr, 4, value);
var page = addr >>> MMAP_BLOCK_BITS;
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
this.mem_page_infos[addr + 3 >>> MMAP_BLOCK_BITS] |= MEM_PAGE_WRITTEN;
if(OP_TRANSLATION)
{
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
this.mem_page_infos[addr + 3 >>> MMAP_BLOCK_BITS] |= MEM_PAGE_WRITTEN;
}
if(this.memory_map_registered[page])
{
@ -296,7 +306,8 @@ Memory.prototype.write_aligned32 = function(addr, value)
this.debug_write(addr << 2, 4, value);
var page = addr >>> MMAP_BLOCK_BITS - 2;
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
if(OP_TRANSLATION) this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
if(this.memory_map_registered[page])
{
@ -321,9 +332,12 @@ Memory.prototype.write_blob = function(blob, offset)
var page = offset >>> 12,
end = (offset + blob) >>> 12;
for(; page <= end; page++)
if(OP_TRANSLATION)
{
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
for(; page <= end; page++)
{
this.mem_page_infos[page] |= MEM_PAGE_WRITTEN;
}
}
};

8
src/misc_instr.macro.js
View file

@ -127,7 +127,7 @@ v86.prototype.getcf = function()
{
if(this.flags_changed & 1)
{
return +!!((this.last_op1 ^ (this.last_op1 ^ this.last_op2) & (this.last_op2 ^ this.last_add_result)) & this.last_op_size);
return (this.last_op1 ^ (this.last_op1 ^ this.last_op2) & (this.last_op2 ^ this.last_add_result)) >>> this.last_op_size & 1;
}
else
{
@ -167,7 +167,7 @@ v86.prototype.getzf = function()
{
if(this.flags_changed & flag_zero)
{
return (~this.last_result & this.last_result - 1) & this.last_op_size;
return (~this.last_result & this.last_result - 1) >>> this.last_op_size & 1;
}
else
{
@ -180,7 +180,7 @@ v86.prototype.getsf = function()
{
if(this.flags_changed & flag_sign)
{
return this.last_result & this.last_op_size;
return this.last_result >>> this.last_op_size & 1;
}
else
{
@ -193,7 +193,7 @@ v86.prototype.getof = function()
{
if(this.flags_changed & flag_overflow)
{
return ((this.last_op1 ^ this.last_add_result) & (this.last_op2 ^ this.last_add_result)) & this.last_op_size;
return ((this.last_op1 ^ this.last_add_result) & (this.last_op2 ^ this.last_add_result)) >>> this.last_op_size & 1;
}
else
{

4
src/string.macro.js
View file

@ -18,7 +18,7 @@
fn;\
if(use_di) dest += size, cpu.regv[cpu.reg_vdi] += size;\
if(use_si) src += size, cpu.regv[cpu.reg_vsi] += size;\
cont = --cpu.regv[cpu.reg_vcx] && (!use_cmp || (data_src === data_dest) === (cpu.repeat_string_prefix === REPEAT_STRING_PREFIX_Z));\
cont = --cpu.regv[cpu.reg_vcx] !== 0 && (!use_cmp || (data_src === data_dest) === (cpu.repeat_string_prefix === REPEAT_STRING_PREFIX_Z));\
cpu.timestamp_counter++;\
} while(cont && next_cycle--)
@ -27,7 +27,7 @@
fn;\
if(use_di) phys_dest += single_size;\
if(use_si) phys_src += single_size;\
cont = --count && (!use_cmp || (data_src === data_dest) === (cpu.repeat_string_prefix === REPEAT_STRING_PREFIX_Z));\
cont = --count !== 0 && (!use_cmp || (data_src === data_dest) === (cpu.repeat_string_prefix === REPEAT_STRING_PREFIX_Z));\
cpu.timestamp_counter++;\
} while(cont && next_cycle--)