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LDS/LES/LFS/LGS/LSS: Fix segment wraparounds in 16-bit address mode.

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This commit is contained in:
OBattler
2025-04-07 06:03:19 +02:00
parent 018ff46253
commit 3b5966eb46
15 changed files with 105 additions and 31 deletions
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7
src/codegen/codegen_ops_x86-64.h
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@@ -1054,6 +1054,13 @@ MEM_LOAD_ADDR_EA_W_OFFSET(x86seg *seg, int offset)
addbyte(0x83); /*ADD EAX, offset*/
addbyte(0xc0);
addbyte(offset);
if (!(op_32 & 0x200)) {
addbyte(0x25) /* AND EAX, ffffh */
addbyte(0xff);
addbyte(0xff);
addbyte(0x00);
addbyte(0x00);
}
MEM_LOAD_ADDR_EA_W(seg);
}
static __inline void

7
src/codegen/codegen_ops_x86.h
View File

@@ -802,6 +802,13 @@ MEM_LOAD_ADDR_EA_W_OFFSET(x86seg *seg, int offset)
addbyte(0x83); /*ADD EAX, offset*/
addbyte(0xc0);
addbyte(offset);
if (!(op_32 & 0x200)) {
addbyte(0x25) /* AND EAX, ffffh */
addbyte(0xff);
addbyte(0xff);
addbyte(0x00);
addbyte(0x00);
}
addbyte(0xe8); /*CALL mem_load_addr_ea_w*/
addlong(mem_load_addr_ea_w - (uint32_t) (&codeblock[block_current].data[block_pos + 4]));