SliTaz Repositories

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/8086tiny/stuff/8086tiny.u	Wed Dec 29 09:24:42 2021 +0100
     1.3 @@ -0,0 +1,40 @@
     1.4 +--- 8086tiny.c
     1.5 ++++ 8086tiny.c
     1.6 +@@ -112,8 +112,9 @@
     1.7 + 										  regs16[REG_AX] = op_result, \
     1.8 + 										  set_OF(set_CF(op_result - (op_data_type)op_result)))
     1.9 + #define DIV_MACRO(out_data_type,in_data_type,out_regs) (scratch_int = CAST(out_data_type)mem[rm_addr]) && !(scratch2_uint = (in_data_type)(scratch_uint = (out_regs[i_w+1] << 16) + regs16[REG_AX]) / scratch_int, scratch2_uint - (out_data_type)scratch2_uint) ? out_regs[i_w+1] = scratch_uint - scratch_int * (*out_regs = scratch2_uint) : pc_interrupt(0)
    1.10 +-#define DAA_DAS(op1,op2,mask,min) set_AF((((scratch2_uint = regs8[REG_AL]) & 0x0F) > 9) || regs8[FLAG_AF]) && (op_result = regs8[REG_AL] op1 6, set_CF(regs8[FLAG_CF] || (regs8[REG_AL] op2 scratch2_uint))), \
    1.11 +-								  set_CF((((mask & 1 ? scratch2_uint : regs8[REG_AL]) & mask) > min) || regs8[FLAG_CF]) && (op_result = regs8[REG_AL] op1 0x60)
    1.12 ++#define DAA_DAS(op1,op2) \
    1.13 ++set_AF((((scratch_uchar = regs8[REG_AL]) & 0x0F) > 9) || regs8[FLAG_AF]) && (op_result = (regs8[REG_AL] op1 6), set_CF(regs8[FLAG_CF] || (regs8[REG_AL] op2 scratch_uchar))), \
    1.14 ++set_CF((regs8[REG_AL] > 0x9f) || regs8[FLAG_CF]) && (op_result = (regs8[REG_AL] op1 0x60))
    1.15 + #define ADC_SBB_MACRO(a) OP(a##= regs8[FLAG_CF] +), \
    1.16 + 						 set_CF(regs8[FLAG_CF] && (op_result == op_dest) || (a op_result < a(int)op_dest)), \
    1.17 + 						 set_AF_OF_arith()
    1.18 +@@ -451,7 +452,6 @@
    1.19 + 			OPCODE 12: // ROL|ROR|RCL|RCR|SHL|SHR|???|SAR reg/mem, 1/CL/imm (80186)
    1.20 + 				scratch2_uint = SIGN_OF(mem[rm_addr]),
    1.21 + 				scratch_uint = extra ? // xxx reg/mem, imm
    1.22 +-					++reg_ip,
    1.23 + 					(char)i_data1
    1.24 + 				: // xxx reg/mem, CL
    1.25 + 					i_d
    1.26 +@@ -468,7 +468,7 @@
    1.27 + 					else // Rotate/shift left operations
    1.28 + 						R_M_OP(mem[rm_addr], <<=, scratch_uint);
    1.29 + 					if (i_reg > 3) // Shift operations
    1.30 +-						set_opcode(0x10); // Decode like ADC
    1.31 ++						set_flags_type = FLAGS_UPDATE_SZP; // Shift instructions affect SZP
    1.32 + 					if (i_reg > 4) // SHR or SAR
    1.33 + 						set_CF(op_dest >> (scratch_uint - 1) & 1);
    1.34 + 				}
    1.35 +@@ -605,7 +605,7 @@
    1.36 + 				rep_override_en && rep_override_en++
    1.37 + 			OPCODE 28: // DAA/DAS
    1.38 + 				i_w = 0;
    1.39 +-				extra ? DAA_DAS(-=, >=, 0xFF, 0x99) : DAA_DAS(+=, <, 0xF0, 0x90) // extra = 0 for DAA, 1 for DAS
    1.40 ++				if (extra) DAA_DAS(-=, >); else DAA_DAS(+=, <)
    1.41 + 			OPCODE 29: // AAA/AAS
    1.42 + 				op_result = AAA_AAS(extra - 1)
    1.43 + 			OPCODE 30: // CBW