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

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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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8
src/codegen_new/codegen_ops_misc.c
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@@ -533,8 +533,8 @@ ropCWDE(UNUSED(codeblock_t *block), ir_data_t *ir, UNUSED(uint8_t opcode), UNUSE
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc); \
target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 0); \
codegen_check_seg_read(block, ir, target_seg); \
uop_MEM_LOAD_REG(ir, IREG_temp0_W, ireg_seg_base(target_seg), IREG_eaaddr); \
uop_MEM_LOAD_REG_OFFSET(ir, IREG_temp1_W, ireg_seg_base(target_seg), IREG_eaaddr, 2); \
uop_MEM_LOAD_REG(ir, IREG_temp0_W, ireg_seg_base(target_seg), (op_32 & 0x200) ? IREG_eaaddr : IREG_eaa16); \
uop_MEM_LOAD_REG_OFFSET(ir, IREG_temp1_W, ireg_seg_base(target_seg), (op_32 & 0x200) ? IREG_eaaddr : IREG_eaa16, 2); \
uop_LOAD_SEG(ir, seg, IREG_temp1_W); \
uop_MOV(ir, IREG_16(dest_reg), IREG_temp0_W); \
\
@@ -556,8 +556,8 @@ ropCWDE(UNUSED(codeblock_t *block), ir_data_t *ir, UNUSED(uint8_t opcode), UNUSE
uop_MOV_IMM(ir, IREG_oldpc, cpu_state.oldpc); \
target_seg = codegen_generate_ea(ir, op_ea_seg, fetchdat, op_ssegs, &op_pc, op_32, 0); \
codegen_check_seg_read(block, ir, target_seg); \
uop_MEM_LOAD_REG(ir, IREG_temp0, ireg_seg_base(target_seg), IREG_eaaddr); \
uop_MEM_LOAD_REG_OFFSET(ir, IREG_temp1_W, ireg_seg_base(target_seg), IREG_eaaddr, 4); \
uop_MEM_LOAD_REG(ir, IREG_temp0, ireg_seg_base(target_seg), (op_32 & 0x200) ? IREG_eaaddr : IREG_eaa16); \
uop_MEM_LOAD_REG_OFFSET(ir, IREG_temp1_W, ireg_seg_base(target_seg), (op_32 & 0x200) ? IREG_eaaddr : IREG_eaa16, 4); \
uop_LOAD_SEG(ir, seg, IREG_temp1_W); \
uop_MOV(ir, IREG_32(dest_reg), IREG_temp0); \
\