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

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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
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51
src/codegen_x86.c
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@@ -1,6 +1,3 @@
/* Copyright holders: Sarah Walker
see COPYING for more details
*/
#if defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined WIN32 || defined _WIN32 || defined _WIN32
#include <stdlib.h>
@@ -553,7 +550,7 @@ 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*/
@@ -575,8 +572,8 @@ 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(0x05);
addlong((uint32_t)&eaaddr);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.eaaddr - (uintptr_t)&cpu_state);
addlong((fetchdat >> 8) & 0xffff);
(*op_pc) += 2;
}
@@ -617,7 +614,7 @@ static x86seg *codegen_generate_ea_16_long(x86seg *op_ea_seg, uint32_t fetchdat,
addbyte(0x25); /*ANDL $0xffff, %eax*/
addlong(0xffff);
addbyte(0xa3);
addlong((uint32_t)&eaaddr);
addlong((uint32_t)&cpu_state.eaaddr);
if (mod1seg[cpu_rm] == &ss && !op_ssegs)
op_ea_seg = &_ss;
@@ -704,7 +701,7 @@ static x86seg *codegen_generate_ea_32_long(x86seg *op_ea_seg, uint32_t fetchdat,
}
}
addbyte(0xa3);
addlong((uint32_t)&eaaddr);
addlong((uint32_t)&cpu_state.eaaddr);
}
else
{
@@ -712,8 +709,8 @@ 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(0x05);
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;
@@ -723,7 +720,7 @@ static x86seg *codegen_generate_ea_32_long(x86seg *op_ea_seg, uint32_t fetchdat,
addbyte((uintptr_t)&cpu_state.regs[cpu_rm].l - (uintptr_t)&cpu_state);
// addbyte(0xa1); /*MOVL regs[cpu_rm].l, %eax*/
// addlong((uint32_t)&cpu_state.regs[cpu_rm].l);
eaaddr = cpu_state.regs[cpu_rm].l;
cpu_state.eaaddr = cpu_state.regs[cpu_rm].l;
if (cpu_mod)
{
if (cpu_rm == 5 && !op_ssegs)
@@ -743,7 +740,7 @@ static x86seg *codegen_generate_ea_32_long(x86seg *op_ea_seg, uint32_t fetchdat,
}
}
addbyte(0xa3);
addlong((uint32_t)&eaaddr);
addlong((uint32_t)&cpu_state.eaaddr);
}
return op_ea_seg;
}
@@ -961,10 +958,11 @@ generate_call:
if (op_ssegs != last_ssegs)
{
last_ssegs = op_ssegs;
addbyte(0xC7); /*MOVL $0,(ssegs)*/
addbyte(0x05);
addlong((uint32_t)&ssegs);
addlong(op_ssegs);
addbyte(0xC6); /*MOVB [ssegs],op_ssegs*/
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.ssegs - (uintptr_t)&cpu_state);
addbyte(op_pc + pc_off);
}
if (!test_modrm ||
@@ -993,14 +991,14 @@ generate_call:
op_pc -= pc_off;
}
// if (op_ea_seg != last_ea_seg)
// {
// last_ea_seg = op_ea_seg;
if (op_ea_seg != last_ea_seg)
{
last_ea_seg = op_ea_seg;
addbyte(0xC7); /*MOVL $&_ds,(ea_seg)*/
addbyte(0x05);
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*/
addbyte(0x45);
@@ -1008,15 +1006,16 @@ generate_call:
addlong(op_pc + pc_off);
addbyte(0xC7); /*MOVL $old_pc,(oldpc)*/
addbyte(0x05);
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(0x05);
addlong((uint32_t)&op32);
addbyte(0x45);
addbyte((uintptr_t)&cpu_state.op32 - (uintptr_t)&cpu_state);
addlong(op_32);
}