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comparison m68k_core_x86.c @ 1082:2ec5e6eaf81d

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Add support for specifying a reset handler in the M68K core. Adjust memory map initialization to handle extra field. Improved handling of out of bounds execution.
author Michael Pavone <pavone@retrodev.com>
date Thu, 06 Oct 2016 09:34:31 -0700
parents 7267bc1ab547
children 193db42e702b
comparison
equal deleted inserted replaced
1081:89cc20cf1ad3 1082:2ec5e6eaf81d
1152 set_flag(opts, 0, FLAG_V); 1152 set_flag(opts, 0, FLAG_V);
1153 } 1153 }
1154 if (inst->src.addr_mode == MODE_UNUSED) { 1154 if (inst->src.addr_mode == MODE_UNUSED) {
1155 m68k_save_result(inst, opts); 1155 m68k_save_result(inst, opts);
1156 } 1156 }
1157 }
1158
1159 void translate_m68k_reset(m68k_options *opts, m68kinst *inst)
1160 {
1161 code_info *code = &opts->gen.code;
1162 cycles(&opts->gen, BUS);
1163 mov_rdispr(code, opts->gen.context_reg, offsetof(m68k_context, reset_handler), opts->gen.scratch1, SZ_PTR);
1164 cmp_ir(code, 0, opts->gen.scratch1, SZ_PTR);
1165 code_ptr no_reset_handler = code->cur + 1;
1166 jcc(code, CC_Z, code->cur+2);
1167 call(code, opts->gen.save_context);
1168 call_args_r(code, opts->gen.scratch1, 1, opts->gen.context_reg);
1169 mov_rr(code, RAX, opts->gen.context_reg, SZ_PTR);
1170 call(code, opts->gen.load_context);
1171 *no_reset_handler = code->cur - (no_reset_handler + 1);
1157 } 1172 }
1158 1173
1159 void op_ir(code_info *code, m68kinst *inst, int32_t val, uint8_t dst, uint8_t size) 1174 void op_ir(code_info *code, m68kinst *inst, int32_t val, uint8_t dst, uint8_t size)
1160 { 1175 {
1161 switch (inst->op) 1176 switch (inst->op)
2218 mov_rrdisp(code, opts->gen.scratch1, dst_op->base, dst_op->disp, SZ_W); 2233 mov_rrdisp(code, opts->gen.scratch1, dst_op->base, dst_op->disp, SZ_W);
2219 } 2234 }
2220 m68k_save_result(inst, opts); 2235 m68k_save_result(inst, opts);
2221 } 2236 }
2222 2237
2223 void translate_out_of_bounds(code_info *code) 2238 void m68k_out_of_bounds_execution(uint32_t address)
2224 { 2239 {
2225 xor_rr(code, RDI, RDI, SZ_D); 2240 fatal_error("M68K attempted to execute code at unmapped or I/O address %X\n", address);
2226 call_args(code, (code_ptr)exit, 1, RDI); 2241 }
2242
2243 void translate_out_of_bounds(m68k_options *opts, uint32_t address)
2244 {
2245 code_info *code = &opts->gen.code;
2246 mov_ir(code, address, opts->gen.scratch1, SZ_D);
2247 call_args(code, (code_ptr)m68k_out_of_bounds_execution, 1, opts->gen.scratch1);
2227 } 2248 }
2228 2249
2229 void m68k_set_last_prefetch(m68k_options *opts, uint32_t address) 2250 void m68k_set_last_prefetch(m68k_options *opts, uint32_t address)
2230 { 2251 {
2231 mov_irdisp(&opts->gen.code, address, opts->gen.context_reg, offsetof(m68k_context, last_prefetch_address), SZ_D); 2252 mov_irdisp(&opts->gen.code, address, opts->gen.context_reg, offsetof(m68k_context, last_prefetch_address), SZ_D);