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Clear flat DS/SS status on segment load during block. Fixes LBA 2.

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This commit is contained in:
SarahW 2017-06-02 22:01:09 +01:00
commit fa9d9381b7
6 changed files with 68 additions and 105 deletions
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66
src/codegen_ops_x86.h
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@ -618,9 +618,7 @@ static inline void CHECK_SEG_READ(x86seg *seg)
return;
if (seg->checked)
return;
if ((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS))
return;
if ((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS))
if (seg == &_ds && codegen_flat_ds)
return;
addbyte(0x83); /*CMP seg->base, -1*/
@ -643,9 +641,7 @@ static inline void CHECK_SEG_WRITE(x86seg *seg)
return;
if (seg->checked)
return;
if ((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS))
return;
if ((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS))
if (seg == &_ds && codegen_flat_ds)
return;
addbyte(0x83); /*CMP seg->base, -1*/
@ -660,9 +656,7 @@ static inline void CHECK_SEG_WRITE(x86seg *seg)
}
static inline void CHECK_SEG_LIMITS(x86seg *seg, int end_offset)
{
if ((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS))
return;
if ((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
return;
addbyte(0x3b); /*CMP EAX, seg->limit_low*/
@ -690,8 +684,7 @@ static inline void CHECK_SEG_LIMITS(x86seg *seg, int end_offset)
static inline void MEM_LOAD_ADDR_EA_B(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -709,8 +702,7 @@ static inline void MEM_LOAD_ADDR_EA_B(x86seg *seg)
}
static inline int MEM_LOAD_ADDR_EA_B_NO_ABRT(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -730,8 +722,7 @@ static inline int MEM_LOAD_ADDR_EA_B_NO_ABRT(x86seg *seg)
}
static inline void MEM_LOAD_ADDR_EA_W(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -749,8 +740,7 @@ static inline void MEM_LOAD_ADDR_EA_W(x86seg *seg)
}
static inline void MEM_LOAD_ADDR_EA_W_OFFSET(x86seg *seg, int offset)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -771,8 +761,7 @@ static inline void MEM_LOAD_ADDR_EA_W_OFFSET(x86seg *seg, int offset)
}
static inline int MEM_LOAD_ADDR_EA_W_NO_ABRT(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -792,8 +781,7 @@ static inline int MEM_LOAD_ADDR_EA_W_NO_ABRT(x86seg *seg)
}
static inline void MEM_LOAD_ADDR_EA_L(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -812,8 +800,7 @@ static inline void MEM_LOAD_ADDR_EA_L(x86seg *seg)
}
static inline int MEM_LOAD_ADDR_EA_L_NO_ABRT(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -834,8 +821,7 @@ static inline int MEM_LOAD_ADDR_EA_L_NO_ABRT(x86seg *seg)
static inline void MEM_LOAD_ADDR_EA_Q(x86seg *seg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR EDX, EDX*/
addbyte(0xd2);
@ -873,8 +859,7 @@ static inline void MEM_LOAD_ADDR_IMM_L(x86seg *seg, uint32_t addr)
static inline void MEM_STORE_ADDR_EA_B(x86seg *seg, int host_reg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -895,8 +880,7 @@ static inline void MEM_STORE_ADDR_EA_B(x86seg *seg, int host_reg)
}
static inline void MEM_STORE_ADDR_EA_B_NO_ABRT(x86seg *seg, int host_reg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -917,8 +901,7 @@ static inline void MEM_STORE_ADDR_EA_B_NO_ABRT(x86seg *seg, int host_reg)
}
static inline void MEM_STORE_ADDR_EA_W(x86seg *seg, int host_reg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -939,8 +922,7 @@ static inline void MEM_STORE_ADDR_EA_W(x86seg *seg, int host_reg)
}
static inline void MEM_STORE_ADDR_EA_W_NO_ABRT(x86seg *seg, int host_reg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -961,8 +943,7 @@ static inline void MEM_STORE_ADDR_EA_W_NO_ABRT(x86seg *seg, int host_reg)
}
static inline void MEM_STORE_ADDR_EA_L(x86seg *seg, int host_reg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -983,8 +964,7 @@ static inline void MEM_STORE_ADDR_EA_L(x86seg *seg, int host_reg)
}
static inline void MEM_STORE_ADDR_EA_L_NO_ABRT(x86seg *seg, int host_reg)
{
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -1015,8 +995,7 @@ static inline void MEM_STORE_ADDR_EA_Q(x86seg *seg, int host_reg, int host_reg2)
addbyte(0x89); /*MOV ECX, host_reg2*/
addbyte(0xc0 | REG_ECX | (host_reg2 << 3));
}
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -3943,8 +3922,7 @@ static inline void LOAD_EA()
static inline void MEM_CHECK_WRITE(x86seg *seg)
{
CHECK_SEG_WRITE(seg);
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -3962,8 +3940,7 @@ static inline void MEM_CHECK_WRITE(x86seg *seg)
static inline void MEM_CHECK_WRITE_W(x86seg *seg)
{
CHECK_SEG_WRITE(seg);
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);
@ -3981,8 +3958,7 @@ static inline void MEM_CHECK_WRITE_W(x86seg *seg)
static inline void MEM_CHECK_WRITE_L(x86seg *seg)
{
CHECK_SEG_WRITE(seg);
if (((seg == &_ds) && (cpu_cur_status & CPU_STATUS_FLATDS)) ||
((seg == &_ss) && (cpu_cur_status & CPU_STATUS_FLATSS)))
if ((seg == &_ds && codegen_flat_ds) || (seg == &_ss && codegen_flat_ss))
{
addbyte(0x31); /*XOR ESI, ESI*/
addbyte(0xf6);