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| version 1.13, 2004/03/05 14:17:35 | version 1.24, 2005/03/12 12:32:54 |
|---|---|
| Line 12 | Line 12 |
| * 2. Redistributions in binary form must reproduce the above copyright | * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the | * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. | * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products | |
| * derived from this software without specific prior written permission. | |
| * | * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| Line 28 | Line 26 |
| */ | */ |
| #include "compiler.h" | #include "compiler.h" |
| #include "dosio.h" | |
| #include "cpu.h" | #include "cpu.h" |
| #include "ia32.mcr" | #include "ia32.mcr" |
| #include "inst_table.h" | #include "inst_table.h" |
| #if defined(ENABLE_TRAP) | |
| #include "steptrap.h" | |
| #endif | |
| sigjmp_buf exec_1step_jmpbuf; | sigjmp_buf exec_1step_jmpbuf; |
| Line 63 exec_1step(void) | Line 66 exec_1step(void) |
| CPU_PREV_EIP = CPU_EIP; | CPU_PREV_EIP = CPU_EIP; |
| CPU_STATSAVE.cpu_inst = CPU_STATSAVE.cpu_inst_default; | CPU_STATSAVE.cpu_inst = CPU_STATSAVE.cpu_inst_default; |
| #if defined(ENABLE_TRAP) | |
| steptrap(CPU_CS, CPU_EIP); | |
| #endif | |
| #if defined(IA32_INSTRUCTION_TRACE) | #if defined(IA32_INSTRUCTION_TRACE) |
| ctx[ctx_index].regs = CPU_STATSAVE.cpu_regs; | ctx[ctx_index].regs = CPU_STATSAVE.cpu_regs; |
| if (cpu_inst_trace) { | if (cpu_inst_trace) { |
| Line 103 exec_1step(void) | Line 110 exec_1step(void) |
| } | } |
| ctx[ctx_index].opbytes = 0; | ctx[ctx_index].opbytes = 0; |
| #endif | #endif |
| #if defined(IA32_SUPPORT_DEBUG_REGISTER) | |
| if (CPU_STAT_BP && !(CPU_EFLAG & RF_FLAG)) { | |
| int i; | |
| for (i = 0; i < CPU_DEBUG_REG_INDEX_NUM; i++) { | |
| if ((CPU_STAT_BP & (1 << i)) | |
| && (CPU_DR7_GET_RW(i) == CPU_DR7_RW_CODE) | |
| && (CPU_DR(i) == CPU_EIP) | |
| && (CPU_DR7_GET_LEN(i) == 0)) { | |
| CPU_DR6 |= CPU_DR6_B(i); | |
| EXCEPTION(DB_EXCEPTION, 0); | |
| } | |
| } | |
| } | |
| #endif /* IA32_SUPPORT_DEBUG_REGISTER */ | |
| for (prefix = 0; prefix < MAX_PREFIX; prefix++) { | for (prefix = 0; prefix < MAX_PREFIX; prefix++) { |
| GET_PCBYTE(op); | GET_PCBYTE(op); |
| #if defined(IA32_INSTRUCTION_TRACE) | #if defined(IA32_INSTRUCTION_TRACE) |
| Line 134 exec_1step(void) | Line 157 exec_1step(void) |
| /* normal / rep, but not use */ | /* normal / rep, but not use */ |
| if (!(insttable_info[op] & INST_STRING) || !CPU_INST_REPUSE) { | if (!(insttable_info[op] & INST_STRING) || !CPU_INST_REPUSE) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| #if defined(IA32_SUPPORT_DEBUG_REGISTER) | |
| goto check_break_point; | |
| #else | |
| return; | return; |
| #endif | |
| } | } |
| /* rep */ | /* rep */ |
| Line 143 exec_1step(void) | Line 170 exec_1step(void) |
| if (CPU_CX != 0) { | if (CPU_CX != 0) { |
| if (!(insttable_info[op] & REP_CHECKZF)) { | if (!(insttable_info[op] & REP_CHECKZF)) { |
| /* rep */ | /* rep */ |
| do { | for (;;) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| } while (--CPU_CX); | if (--CPU_CX == 0) |
| break; | |
| if (CPU_REMCLOCK <= 0) { | |
| CPU_EIP = CPU_PREV_EIP; | |
| break; | |
| } | |
| } | |
| } else if (CPU_INST_REPUSE != 0xf2) { | } else if (CPU_INST_REPUSE != 0xf2) { |
| /* repe */ | /* repe */ |
| do { | for (;;) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| } while (--CPU_CX && (CPU_FLAGL & Z_FLAG)); | if (--CPU_CX == 0 || CC_NZ) |
| break; | |
| if (CPU_REMCLOCK <= 0) { | |
| CPU_EIP = CPU_PREV_EIP; | |
| break; | |
| } | |
| } | |
| } else { | } else { |
| /* repne */ | /* repne */ |
| do { | for (;;) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| } while (--CPU_CX && !(CPU_FLAGL & Z_FLAG)); | if (--CPU_CX == 0 || CC_Z) |
| break; | |
| if (CPU_REMCLOCK <= 0) { | |
| CPU_EIP = CPU_PREV_EIP; | |
| break; | |
| } | |
| } | |
| } | } |
| } | } |
| } else { | } else { |
| if (CPU_ECX != 0) { | if (CPU_ECX != 0) { |
| if (!(insttable_info[op] & REP_CHECKZF)) { | if (!(insttable_info[op] & REP_CHECKZF)) { |
| /* rep */ | /* rep */ |
| do { | for (;;) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| } while (--CPU_ECX); | if (--CPU_ECX == 0) |
| break; | |
| if (CPU_REMCLOCK <= 0) { | |
| CPU_EIP = CPU_PREV_EIP; | |
| break; | |
| } | |
| } | |
| } else if (CPU_INST_REPUSE != 0xf2) { | } else if (CPU_INST_REPUSE != 0xf2) { |
| /* repe */ | /* repe */ |
| do { | for (;;) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| } while (--CPU_ECX && (CPU_FLAGL & Z_FLAG)); | if (--CPU_ECX == 0 || CC_NZ) |
| break; | |
| if (CPU_REMCLOCK <= 0) { | |
| CPU_EIP = CPU_PREV_EIP; | |
| break; | |
| } | |
| } | |
| } else { | } else { |
| /* repne */ | /* repne */ |
| do { | for (;;) { |
| (*insttable_1byte[CPU_INST_OP32][op])(); | (*insttable_1byte[CPU_INST_OP32][op])(); |
| } while (--CPU_ECX && !(CPU_FLAGL & Z_FLAG)); | if (--CPU_ECX == 0 || CC_Z) |
| break; | |
| if (CPU_REMCLOCK <= 0) { | |
| CPU_EIP = CPU_PREV_EIP; | |
| break; | |
| } | |
| } | |
| } | } |
| } | } |
| } | } |
| #if defined(IA32_SUPPORT_DEBUG_REGISTER) | |
| check_break_point: | |
| if (CPU_TRAP || (CPU_STAT_BP_EVENT & ~CPU_STAT_BP_EVENT_RF)) { | |
| UINT8 orig = CPU_STAT_BP_EVENT & ~CPU_STAT_BP_EVENT_RF; | |
| CPU_STAT_BP_EVENT &= CPU_STAT_BP_EVENT_RF; | |
| CPU_DR6 |= (orig & 0xf); | |
| if (orig & CPU_STAT_BP_EVENT_TASK) { | |
| CPU_DR6 |= CPU_DR6_BT; | |
| } | |
| if (CPU_TRAP) { | |
| CPU_DR6 |= CPU_DR6_BS; | |
| } | |
| INTERRUPT(DB_EXCEPTION, TRUE, FALSE, 0); | |
| } | |
| if (CPU_EFLAG & RF_FLAG) { | |
| if (CPU_STAT_BP_EVENT & CPU_STAT_BP_EVENT_RF) { | |
| /* after IRETD or task switch */ | |
| CPU_STAT_BP_EVENT &= ~CPU_STAT_BP_EVENT_RF; | |
| } else { | |
| CPU_EFLAG &= ~RF_FLAG; | |
| } | |
| } | |
| #endif /* IA32_SUPPORT_DEBUG_REGISTER */ | |
| } | } |