Mercurial > repos > blastem

comparison m68k_to_x86.c @ 100:45cd7d3e7918

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement areg indexed mode for lea
author Mike Pavone <pavone@retrodev.com>
date Thu, 27 Dec 2012 22:11:26 -0800
parents 8491de5d6c06
children bfaca67eeb78
comparison
equal deleted inserted replaced
99:8491de5d6c06 100:45cd7d3e7918
1137 return dst; 1137 return dst;
1138 } 1138 }
1139 1139
1140 uint8_t * translate_m68k_lea(uint8_t * dst, m68kinst * inst, x86_68k_options * opts) 1140 uint8_t * translate_m68k_lea(uint8_t * dst, m68kinst * inst, x86_68k_options * opts)
1141 { 1141 {
1142 int8_t dst_reg = native_reg(&(inst->dst), opts); 1142 int8_t dst_reg = native_reg(&(inst->dst), opts), sec_reg;
1143 switch(inst->src.addr_mode) 1143 switch(inst->src.addr_mode)
1144 { 1144 {
1145 case MODE_AREG_INDIRECT: 1145 case MODE_AREG_INDIRECT:
1146 dst = cycles(dst, BUS); 1146 dst = cycles(dst, BUS);
1147 if (opts->aregs[inst->src.params.regs.pri] >= 0) { 1147 if (opts->aregs[inst->src.params.regs.pri] >= 0) {
1174 } else { 1174 } else {
1175 dst = mov_rdisp8r(dst, CONTEXT, reg_offset(&(inst->src)), SCRATCH1, SZ_D); 1175 dst = mov_rdisp8r(dst, CONTEXT, reg_offset(&(inst->src)), SCRATCH1, SZ_D);
1176 dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, reg_offset(&(inst->dst)), SZ_D); 1176 dst = mov_rrdisp8(dst, SCRATCH1, CONTEXT, reg_offset(&(inst->dst)), SZ_D);
1177 } 1177 }
1178 dst = add_irdisp8(dst, inst->src.params.regs.displacement, CONTEXT, reg_offset(&(inst->src)), SZ_D); 1178 dst = add_irdisp8(dst, inst->src.params.regs.displacement, CONTEXT, reg_offset(&(inst->src)), SZ_D);
1179 }
1180 break;
1181 case MODE_AREG_INDEX_DISP8:
1182 dst = cycles(dst, 6);//TODO: Check to make sure this is correct
1183 if (opts->aregs[inst->src.params.regs.pri] >= 0) {
1184 dst = mov_rr(dst, opts->aregs[inst->src.params.regs.pri], SCRATCH2, SZ_D);
1185 } else {
1186 dst = mov_rdisp8r(dst, CONTEXT, reg_offset(&(inst->src)), SCRATCH2, SZ_D);
1187 }
1188 sec_reg = (inst->src.params.regs.sec >> 1) & 0x7;
1189 if (inst->src.params.regs.sec & 1) {
1190 if (inst->src.params.regs.sec & 0x10) {
1191 if (opts->aregs[sec_reg] >= 0) {
1192 dst = add_rr(dst, opts->aregs[sec_reg], SCRATCH2, SZ_D);
1193 } else {
1194 dst = add_rdisp8r(dst, CONTEXT, offsetof(m68k_context, aregs) + sizeof(uint32_t)*sec_reg, SCRATCH2, SZ_D);
1195 }
1196 } else {
1197 if (opts->dregs[sec_reg] >= 0) {
1198 dst = add_rr(dst, opts->dregs[sec_reg], SCRATCH2, SZ_D);
1199 } else {
1200 dst = add_rdisp8r(dst, CONTEXT, offsetof(m68k_context, dregs) + sizeof(uint32_t)*sec_reg, SCRATCH2, SZ_D);
1201 }
1202 }
1203 } else {
1204 if (inst->src.params.regs.sec & 0x10) {
1205 if (opts->aregs[sec_reg] >= 0) {
1206 dst = movsx_rr(dst, opts->aregs[sec_reg], SCRATCH1, SZ_W, SZ_D);
1207 } else {
1208 dst = movsx_rdisp8r(dst, CONTEXT, offsetof(m68k_context, aregs) + sizeof(uint32_t)*sec_reg, SCRATCH1, SZ_W, SZ_D);
1209 }
1210 } else {
1211 if (opts->dregs[sec_reg] >= 0) {
1212 dst = movsx_rr(dst, opts->dregs[sec_reg], SCRATCH1, SZ_W, SZ_D);
1213 } else {
1214 dst = movsx_rdisp8r(dst, CONTEXT, offsetof(m68k_context, dregs) + sizeof(uint32_t)*sec_reg, SCRATCH1, SZ_W, SZ_D);
1215 }
1216 }
1217 dst = add_rr(dst, SCRATCH1, SCRATCH2, SZ_D);
1218 }
1219 if (inst->src.params.regs.displacement) {
1220 dst = add_ir(dst, inst->src.params.regs.displacement, SCRATCH2, SZ_D);
1221 }
1222 if (dst_reg >= 0) {
1223 dst = mov_rr(dst, SCRATCH2, dst_reg, SZ_D);
1224 } else {
1225 dst = mov_rrdisp8(dst, SCRATCH2, CONTEXT, reg_offset(&(inst->src)), SZ_D);
1179 } 1226 }
1180 break; 1227 break;
1181 case MODE_PC_DISPLACE: 1228 case MODE_PC_DISPLACE:
1182 dst = cycles(dst, 8); 1229 dst = cycles(dst, 8);
1183 if (dst_reg >= 0) { 1230 if (dst_reg >= 0) {