claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Rewrote the recompiler interrupt checking in assembly (and removed it for the new dynamic compiler because the requires uops are not present), brings performance back up, and also did a number of CPU-related clean-ups (mostly removal of dead variables and associated code).

Browse Source
This commit is contained in:
OBattler
2020-07-13 19:46:19 +02:00
parent 0cd0d83cee
commit a862bda04c
32 changed files with 196 additions and 291 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
src/codegen/codegen_x86-64.c
View File

@@ -49,11 +49,6 @@ int block_current = 0;
static int block_num;
int block_pos;
int cpu_recomp_flushes, cpu_recomp_flushes_latched;
int cpu_recomp_evicted, cpu_recomp_evicted_latched;
int cpu_recomp_reuse, cpu_recomp_reuse_latched;
int cpu_recomp_removed, cpu_recomp_removed_latched;
uint32_t codegen_endpc;
int codegen_block_cycles;
@@ -224,7 +219,6 @@ void codegen_check_flush(page_t *page, uint64_t mask, uint32_t phys_addr)
if (mask & block->page_mask)
{
delete_block(block);
cpu_recomp_evicted++;
}
if (block == block->next)
fatal("Broken 1\n");
@@ -238,7 +232,6 @@ void codegen_check_flush(page_t *page, uint64_t mask, uint32_t phys_addr)
if (mask & block->page_mask2)
{
delete_block(block);
cpu_recomp_evicted++;
}
if (block == block->next_2)
fatal("Broken 2\n");
@@ -260,7 +253,6 @@ void codegen_block_init(uint32_t phys_addr)
if (block->valid != 0)
{
delete_block(block);
cpu_recomp_reuse++;
}
block_num = HASH(phys_addr);
codeblock_hash[block_num] = &codeblock[block_current];
@@ -393,7 +385,6 @@ void codegen_block_remove()
codeblock_t *block = &codeblock[block_current];
delete_block(block);
cpu_recomp_removed++;
recomp_page = -1;
}
@@ -1049,7 +1040,6 @@ void codegen_generate_call(uint8_t opcode, OpFn op, uint32_t fetchdat, uint32_t
generate_call:
codegen_timing_opcode(opcode, fetchdat, op_32, op_pc);
codegen_accumulate(ACCREG_ins, 1);
codegen_accumulate(ACCREG_cycles, -codegen_block_cycles);
codegen_block_cycles = 0;
@@ -1096,10 +1086,11 @@ generate_call:
codegen_endpc = (cs + cpu_state.pc) + 8;
/* Check for interrupts. */
call(block, (uintptr_t)int_check);
addbyte(0x85); /*OR %eax, %eax*/
addbyte(0xc0);
addbyte(0xf6); /* test byte ptr[&pic_pending],1 */
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t) (uintptr_t) &pic_pending);
addbyte(0x01);
addbyte(0x0F); addbyte(0x85); /*JNZ 0*/
addlong((uint32_t)(uintptr_t)&block->data[BLOCK_EXIT_OFFSET] - (uint32_t)(uintptr_t)(&block->data[block_pos + 4]));
@@ -1175,13 +1166,11 @@ generate_call:
block->ins++;
addbyte(0x85); /*OR %eax, %eax*/
addbyte(0xc0);
addbyte(0x0F); addbyte(0x85); /*JNZ 0*/
addlong((uint32_t)(uintptr_t)&block->data[BLOCK_EXIT_OFFSET] - (uint32_t)(uintptr_t)(&block->data[block_pos + 4]));
/* Check for interrupts. */
call(block, (uintptr_t)int_check);
addbyte(0x0a); /* or al,byte ptr[&pic_pending] */
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t) (uintptr_t) &pic_pending);
addbyte(0x85); /*OR %eax, %eax*/
addbyte(0xc0);