claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions 3 Packages Projects Releases Wiki Activity

Rewrote the disc sector poller again for simplified code and more accuracy;

Browse Source 
Floppy formats are now accurately timed and also more accurately implemented;
Applied all mainline PCem commits.
This commit is contained in:
OBattler
2016-08-20 03:40:12 +02:00
parent 24a6ab13fb
commit a924f37f43
51 changed files with 2471 additions and 1302 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
src/codegen_x86-64.c
View File

@@ -1,6 +1,3 @@
/* Copyright holders: Sarah Walker
see COPYING for more details
*/
#ifdef __amd64__
#include <stdlib.h>
@@ -592,7 +589,7 @@ int opcode_0f_modrm[256] =
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /*80*/
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /*90*/
0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, /*a0*/
0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, /*a0*/
1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, /*b0*/
1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, /*c0*/
@@ -614,9 +611,8 @@ static x86seg *codegen_generate_ea_16_long(x86seg *op_ea_seg, uint32_t fetchdat,
if (!cpu_mod && cpu_rm == 6)
{
addbyte(0xC7); /*MOVL $0,(ssegs)*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&eaaddr);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
addlong((fetchdat >> 8) & 0xffff);
(*op_pc) += 2;
}
@@ -725,9 +721,8 @@ static x86seg *codegen_generate_ea_16_long(x86seg *op_ea_seg, uint32_t fetchdat,
addlong(0xffff);
}
addbyte(0x89); /*MOV eaaddr, EAX*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&eaaddr);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
if (mod1seg[cpu_rm] == &ss && !op_ssegs)
op_ea_seg = &_ss;
@@ -881,9 +876,8 @@ static x86seg *codegen_generate_ea_32_long(x86seg *op_ea_seg, uint32_t fetchdat,
op_ea_seg = &_ss;
addbyte(0x89); /*MOV eaaddr, EAX*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&eaaddr);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
}
else
{
@@ -893,9 +887,8 @@ static x86seg *codegen_generate_ea_32_long(x86seg *op_ea_seg, uint32_t fetchdat,
{
new_eaaddr = fastreadl(cs + (*op_pc) + 1);
addbyte(0xC7); /*MOVL $new_eaaddr,(eaaddr)*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&eaaddr);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
addlong(new_eaaddr);
(*op_pc) += 4;
return op_ea_seg;
@@ -925,17 +918,15 @@ static x86seg *codegen_generate_ea_32_long(x86seg *op_ea_seg, uint32_t fetchdat,
(*op_pc) += 4;
}
addbyte(0x89); /*MOV eaaddr, EAX*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&eaaddr);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
}
else
{
addbyte(0x44); /*MOV eaaddr, base_reg*/
addbyte(0x89);
addbyte(4 | (base_reg << 3));
addbyte(0x25);
addlong((uint32_t)&eaaddr);
addbyte(0x45 | (base_reg << 3));
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
}
}
return op_ea_seg;
@@ -1154,11 +1145,10 @@ generate_call:
if (op_ssegs != last_ssegs)
{
last_ssegs = op_ssegs;
addbyte(0xC7); /*MOVL $0,(ssegs)*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&ssegs);
addlong(op_ssegs);
addbyte(0xC6); /*MOVB $0,(ssegs)*/
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.ssegs - (uintptr_t)&cpu_state);
addbyte(op_ssegs);
}
//#if 0
if ((!test_modrm ||
@@ -1187,15 +1177,14 @@ generate_call:
op_pc -= pc_off;
}
//#endif
// if (op_ea_seg != last_ea_seg)
// {
if (op_ea_seg != last_ea_seg)
{
// last_ea_seg = op_ea_seg;
addbyte(0xC7); /*MOVL $&_ds,(ea_seg)*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&ea_seg);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.ea_seg - (uintptr_t)&cpu_state);
addlong((uint32_t)op_ea_seg);
// }
}
addbyte(0xC7); /*MOVL [pc],new_pc*/
@@ -1203,17 +1192,15 @@ generate_call:
addbyte((uintptr_t)&cpu_state.pc - (uintptr_t)&cpu_state);
addlong(op_pc + pc_off);
addbyte(0xC7); /*MOVL $old_pc,(oldpc)*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&oldpc);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.oldpc - (uintptr_t)&cpu_state);
addlong(old_pc);
if (op_32 != last_op32)
{
last_op32 = op_32;
addbyte(0xC7); /*MOVL $use32,(op32)*/
addbyte(0x04);
addbyte(0x25);
addlong((uint32_t)&op32);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.op32 - (uintptr_t)&cpu_state);
addlong(op_32);
}