1ece92f85SJason Jin /**************************************************************************** 2ece92f85SJason Jin * 3ece92f85SJason Jin * Realmode X86 Emulator Library 4ece92f85SJason Jin * 5ece92f85SJason Jin * Copyright (C) 1991-2004 SciTech Software, Inc. 6ece92f85SJason Jin * Copyright (C) David Mosberger-Tang 7ece92f85SJason Jin * Copyright (C) 1999 Egbert Eich 8ece92f85SJason Jin * 9ece92f85SJason Jin * ======================================================================== 10ece92f85SJason Jin * 11ece92f85SJason Jin * Permission to use, copy, modify, distribute, and sell this software and 12ece92f85SJason Jin * its documentation for any purpose is hereby granted without fee, 13ece92f85SJason Jin * provided that the above copyright notice appear in all copies and that 14ece92f85SJason Jin * both that copyright notice and this permission notice appear in 15ece92f85SJason Jin * supporting documentation, and that the name of the authors not be used 16ece92f85SJason Jin * in advertising or publicity pertaining to distribution of the software 17ece92f85SJason Jin * without specific, written prior permission. The authors makes no 18ece92f85SJason Jin * representations about the suitability of this software for any purpose. 19ece92f85SJason Jin * It is provided "as is" without express or implied warranty. 20ece92f85SJason Jin * 21ece92f85SJason Jin * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 22ece92f85SJason Jin * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 23ece92f85SJason Jin * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 24ece92f85SJason Jin * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 25ece92f85SJason Jin * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 26ece92f85SJason Jin * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 27ece92f85SJason Jin * PERFORMANCE OF THIS SOFTWARE. 28ece92f85SJason Jin * 29ece92f85SJason Jin * ======================================================================== 30ece92f85SJason Jin * 31ece92f85SJason Jin * Language: ANSI C 32ece92f85SJason Jin * Environment: Any 33ece92f85SJason Jin * Developer: Kendall Bennett 34ece92f85SJason Jin * 35ece92f85SJason Jin * Description: This file contains the code to handle debugging of the 36ece92f85SJason Jin * emulator. 37ece92f85SJason Jin * 38ece92f85SJason Jin ****************************************************************************/ 39ece92f85SJason Jin 40ece92f85SJason Jin #include <stdarg.h> 4178cff50eSMichal Simek #include <common.h> 424d91a6ecSJason Hobbs #include <linux/ctype.h> 435b4de930SMichal Simek #include "x86emu/x86emui.h" 445b4de930SMichal Simek 45ece92f85SJason Jin /*----------------------------- Implementation ----------------------------*/ 46ece92f85SJason Jin 47ece92f85SJason Jin #ifdef DEBUG 48ece92f85SJason Jin 49ece92f85SJason Jin static void print_encoded_bytes(u16 s, u16 o); 50ece92f85SJason Jin static void print_decoded_instruction(void); 519029b68fSJason Jin static int x86emu_parse_line(char *s, int *ps, int *n); 52ece92f85SJason Jin 53ece92f85SJason Jin /* should look something like debug's output. */ 54ece92f85SJason Jin void X86EMU_trace_regs(void) 55ece92f85SJason Jin { 56ece92f85SJason Jin if (DEBUG_TRACE()) { 57ece92f85SJason Jin x86emu_dump_regs(); 58ece92f85SJason Jin } 59ece92f85SJason Jin if (DEBUG_DECODE() && !DEBUG_DECODE_NOPRINT()) { 60ece92f85SJason Jin printk("%04x:%04x ", M.x86.saved_cs, M.x86.saved_ip); 61ece92f85SJason Jin print_encoded_bytes(M.x86.saved_cs, M.x86.saved_ip); 62ece92f85SJason Jin print_decoded_instruction(); 63ece92f85SJason Jin } 64ece92f85SJason Jin } 65ece92f85SJason Jin 66ece92f85SJason Jin void X86EMU_trace_xregs(void) 67ece92f85SJason Jin { 68ece92f85SJason Jin if (DEBUG_TRACE()) { 69ece92f85SJason Jin x86emu_dump_xregs(); 70ece92f85SJason Jin } 71ece92f85SJason Jin } 72ece92f85SJason Jin 73ece92f85SJason Jin void x86emu_just_disassemble(void) 74ece92f85SJason Jin { 75ece92f85SJason Jin /* 76ece92f85SJason Jin * This routine called if the flag DEBUG_DISASSEMBLE is set kind 77ece92f85SJason Jin * of a hack! 78ece92f85SJason Jin */ 79ece92f85SJason Jin printk("%04x:%04x ", M.x86.saved_cs, M.x86.saved_ip); 80ece92f85SJason Jin print_encoded_bytes(M.x86.saved_cs, M.x86.saved_ip); 81ece92f85SJason Jin print_decoded_instruction(); 82ece92f85SJason Jin } 83ece92f85SJason Jin 84ece92f85SJason Jin static void disassemble_forward(u16 seg, u16 off, int n) 85ece92f85SJason Jin { 86ece92f85SJason Jin X86EMU_sysEnv tregs; 87ece92f85SJason Jin int i; 88ece92f85SJason Jin u8 op1; 89ece92f85SJason Jin /* 90ece92f85SJason Jin * hack, hack, hack. What we do is use the exact machinery set up 91ece92f85SJason Jin * for execution, except that now there is an additional state 92ece92f85SJason Jin * flag associated with the "execution", and we are using a copy 93ece92f85SJason Jin * of the register struct. All the major opcodes, once fully 94ece92f85SJason Jin * decoded, have the following two steps: TRACE_REGS(r,m); 95ece92f85SJason Jin * SINGLE_STEP(r,m); which disappear if DEBUG is not defined to 96ece92f85SJason Jin * the preprocessor. The TRACE_REGS macro expands to: 97ece92f85SJason Jin * 98ece92f85SJason Jin * if (debug&DEBUG_DISASSEMBLE) 99ece92f85SJason Jin * {just_disassemble(); goto EndOfInstruction;} 100ece92f85SJason Jin * if (debug&DEBUG_TRACE) trace_regs(r,m); 101ece92f85SJason Jin * 102ece92f85SJason Jin * ...... and at the last line of the routine. 103ece92f85SJason Jin * 104ece92f85SJason Jin * EndOfInstruction: end_instr(); 105ece92f85SJason Jin * 106ece92f85SJason Jin * Up to the point where TRACE_REG is expanded, NO modifications 107ece92f85SJason Jin * are done to any register EXCEPT the IP register, for fetch and 108ece92f85SJason Jin * decoding purposes. 109ece92f85SJason Jin * 110ece92f85SJason Jin * This was done for an entirely different reason, but makes a 111ece92f85SJason Jin * nice way to get the system to help debug codes. 112ece92f85SJason Jin */ 113ece92f85SJason Jin tregs = M; 114ece92f85SJason Jin tregs.x86.R_IP = off; 115ece92f85SJason Jin tregs.x86.R_CS = seg; 116ece92f85SJason Jin 117ece92f85SJason Jin /* reset the decoding buffers */ 118ece92f85SJason Jin tregs.x86.enc_str_pos = 0; 119ece92f85SJason Jin tregs.x86.enc_pos = 0; 120ece92f85SJason Jin 121ece92f85SJason Jin /* turn on the "disassemble only, no execute" flag */ 122ece92f85SJason Jin tregs.x86.debug |= DEBUG_DISASSEMBLE_F; 123ece92f85SJason Jin 124ece92f85SJason Jin /* DUMP NEXT n instructions to screen in straight_line fashion */ 125ece92f85SJason Jin /* 126ece92f85SJason Jin * This looks like the regular instruction fetch stream, except 127ece92f85SJason Jin * that when this occurs, each fetched opcode, upon seeing the 128ece92f85SJason Jin * DEBUG_DISASSEMBLE flag set, exits immediately after decoding 129ece92f85SJason Jin * the instruction. XXX --- CHECK THAT MEM IS NOT AFFECTED!!! 130ece92f85SJason Jin * Note the use of a copy of the register structure... 131ece92f85SJason Jin */ 132ece92f85SJason Jin for (i = 0; i < n; i++) { 133ece92f85SJason Jin op1 = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); 134ece92f85SJason Jin (x86emu_optab[op1]) (op1); 135ece92f85SJason Jin } 136ece92f85SJason Jin /* end major hack mode. */ 137ece92f85SJason Jin } 138ece92f85SJason Jin 139ece92f85SJason Jin void x86emu_check_ip_access(void) 140ece92f85SJason Jin { 141ece92f85SJason Jin /* NULL as of now */ 142ece92f85SJason Jin } 143ece92f85SJason Jin 144ece92f85SJason Jin void x86emu_check_sp_access(void) 145ece92f85SJason Jin { 146ece92f85SJason Jin } 147ece92f85SJason Jin 148ece92f85SJason Jin void x86emu_check_mem_access(u32 dummy) 149ece92f85SJason Jin { 150ece92f85SJason Jin /* check bounds, etc */ 151ece92f85SJason Jin } 152ece92f85SJason Jin 153ece92f85SJason Jin void x86emu_check_data_access(uint dummy1, uint dummy2) 154ece92f85SJason Jin { 155ece92f85SJason Jin /* check bounds, etc */ 156ece92f85SJason Jin } 157ece92f85SJason Jin 158ece92f85SJason Jin void x86emu_inc_decoded_inst_len(int x) 159ece92f85SJason Jin { 160ece92f85SJason Jin M.x86.enc_pos += x; 161ece92f85SJason Jin } 162ece92f85SJason Jin 163ece92f85SJason Jin void x86emu_decode_printf(char *x) 164ece92f85SJason Jin { 165ece92f85SJason Jin sprintf(M.x86.decoded_buf + M.x86.enc_str_pos, "%s", x); 166ece92f85SJason Jin M.x86.enc_str_pos += strlen(x); 167ece92f85SJason Jin } 168ece92f85SJason Jin 169ece92f85SJason Jin void x86emu_decode_printf2(char *x, int y) 170ece92f85SJason Jin { 171ece92f85SJason Jin char temp[100]; 172ece92f85SJason Jin sprintf(temp, x, y); 173ece92f85SJason Jin sprintf(M.x86.decoded_buf + M.x86.enc_str_pos, "%s", temp); 174ece92f85SJason Jin M.x86.enc_str_pos += strlen(temp); 175ece92f85SJason Jin } 176ece92f85SJason Jin 177ece92f85SJason Jin void x86emu_end_instr(void) 178ece92f85SJason Jin { 179ece92f85SJason Jin M.x86.enc_str_pos = 0; 180ece92f85SJason Jin M.x86.enc_pos = 0; 181ece92f85SJason Jin } 182ece92f85SJason Jin 183ece92f85SJason Jin static void print_encoded_bytes(u16 s, u16 o) 184ece92f85SJason Jin { 185ece92f85SJason Jin int i; 186ece92f85SJason Jin char buf1[64]; 187ece92f85SJason Jin for (i = 0; i < M.x86.enc_pos; i++) { 188ece92f85SJason Jin sprintf(buf1 + 2 * i, "%02x", fetch_data_byte_abs(s, o + i)); 189ece92f85SJason Jin } 190ece92f85SJason Jin printk("%-20s", buf1); 191ece92f85SJason Jin } 192ece92f85SJason Jin 193ece92f85SJason Jin static void print_decoded_instruction(void) 194ece92f85SJason Jin { 195ece92f85SJason Jin printk("%s", M.x86.decoded_buf); 196ece92f85SJason Jin } 197ece92f85SJason Jin 198ece92f85SJason Jin void x86emu_print_int_vect(u16 iv) 199ece92f85SJason Jin { 200ece92f85SJason Jin u16 seg, off; 201ece92f85SJason Jin 202ece92f85SJason Jin if (iv > 256) 203ece92f85SJason Jin return; 204ece92f85SJason Jin seg = fetch_data_word_abs(0, iv * 4); 205ece92f85SJason Jin off = fetch_data_word_abs(0, iv * 4 + 2); 206ece92f85SJason Jin printk("%04x:%04x ", seg, off); 207ece92f85SJason Jin } 208ece92f85SJason Jin 209ece92f85SJason Jin void X86EMU_dump_memory(u16 seg, u16 off, u32 amt) 210ece92f85SJason Jin { 211ece92f85SJason Jin u32 start = off & 0xfffffff0; 212ece92f85SJason Jin u32 end = (off + 16) & 0xfffffff0; 213ece92f85SJason Jin u32 i; 214ece92f85SJason Jin u32 current; 215ece92f85SJason Jin 216ece92f85SJason Jin current = start; 217ece92f85SJason Jin while (end <= off + amt) { 218ece92f85SJason Jin printk("%04x:%04x ", seg, start); 219ece92f85SJason Jin for (i = start; i < off; i++) 220ece92f85SJason Jin printk(" "); 221ece92f85SJason Jin for (; i < end; i++) 222ece92f85SJason Jin printk("%02x ", fetch_data_byte_abs(seg, i)); 223ece92f85SJason Jin printk("\n"); 224ece92f85SJason Jin start = end; 225ece92f85SJason Jin end = start + 16; 226ece92f85SJason Jin } 227ece92f85SJason Jin } 228ece92f85SJason Jin 229ece92f85SJason Jin void x86emu_single_step(void) 230ece92f85SJason Jin { 231ece92f85SJason Jin char s[1024]; 232ece92f85SJason Jin int ps[10]; 233ece92f85SJason Jin int ntok; 234ece92f85SJason Jin int cmd; 235ece92f85SJason Jin int done; 236ece92f85SJason Jin int segment; 237ece92f85SJason Jin int offset; 238ece92f85SJason Jin static int breakpoint; 239ece92f85SJason Jin static int noDecode = 1; 240ece92f85SJason Jin 241ece92f85SJason Jin char *p; 242ece92f85SJason Jin 243ece92f85SJason Jin if (DEBUG_BREAK()) { 244ece92f85SJason Jin if (M.x86.saved_ip != breakpoint) { 245ece92f85SJason Jin return; 246ece92f85SJason Jin } else { 247ece92f85SJason Jin M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; 248ece92f85SJason Jin M.x86.debug |= DEBUG_TRACE_F; 249ece92f85SJason Jin M.x86.debug &= ~DEBUG_BREAK_F; 250ece92f85SJason Jin print_decoded_instruction(); 251ece92f85SJason Jin X86EMU_trace_regs(); 252ece92f85SJason Jin } 253ece92f85SJason Jin } 254ece92f85SJason Jin done = 0; 255ece92f85SJason Jin offset = M.x86.saved_ip; 256ece92f85SJason Jin while (!done) { 257ece92f85SJason Jin printk("-"); 2589029b68fSJason Jin cmd = x86emu_parse_line(s, ps, &ntok); 259ece92f85SJason Jin switch (cmd) { 260ece92f85SJason Jin case 'u': 261ece92f85SJason Jin disassemble_forward(M.x86.saved_cs, (u16) offset, 10); 262ece92f85SJason Jin break; 263ece92f85SJason Jin case 'd': 264ece92f85SJason Jin if (ntok == 2) { 265ece92f85SJason Jin segment = M.x86.saved_cs; 266ece92f85SJason Jin offset = ps[1]; 267ece92f85SJason Jin X86EMU_dump_memory(segment, (u16) offset, 16); 268ece92f85SJason Jin offset += 16; 269ece92f85SJason Jin } else if (ntok == 3) { 270ece92f85SJason Jin segment = ps[1]; 271ece92f85SJason Jin offset = ps[2]; 272ece92f85SJason Jin X86EMU_dump_memory(segment, (u16) offset, 16); 273ece92f85SJason Jin offset += 16; 274ece92f85SJason Jin } else { 275ece92f85SJason Jin segment = M.x86.saved_cs; 276ece92f85SJason Jin X86EMU_dump_memory(segment, (u16) offset, 16); 277ece92f85SJason Jin offset += 16; 278ece92f85SJason Jin } 279ece92f85SJason Jin break; 280ece92f85SJason Jin case 'c': 281ece92f85SJason Jin M.x86.debug ^= DEBUG_TRACECALL_F; 282ece92f85SJason Jin break; 283ece92f85SJason Jin case 's': 284ece92f85SJason Jin M.x86.debug ^= 285ece92f85SJason Jin DEBUG_SVC_F | DEBUG_SYS_F | DEBUG_SYSINT_F; 286ece92f85SJason Jin break; 287ece92f85SJason Jin case 'r': 288ece92f85SJason Jin X86EMU_trace_regs(); 289ece92f85SJason Jin break; 290ece92f85SJason Jin case 'x': 291ece92f85SJason Jin X86EMU_trace_xregs(); 292ece92f85SJason Jin break; 293ece92f85SJason Jin case 'g': 294ece92f85SJason Jin if (ntok == 2) { 295ece92f85SJason Jin breakpoint = ps[1]; 296ece92f85SJason Jin if (noDecode) { 297ece92f85SJason Jin M.x86.debug |= DEBUG_DECODE_NOPRINT_F; 298ece92f85SJason Jin } else { 299ece92f85SJason Jin M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; 300ece92f85SJason Jin } 301ece92f85SJason Jin M.x86.debug &= ~DEBUG_TRACE_F; 302ece92f85SJason Jin M.x86.debug |= DEBUG_BREAK_F; 303ece92f85SJason Jin done = 1; 304ece92f85SJason Jin } 305ece92f85SJason Jin break; 306ece92f85SJason Jin case 'q': 307ece92f85SJason Jin M.x86.debug |= DEBUG_EXIT; 308ece92f85SJason Jin return; 309ece92f85SJason Jin case 'P': 310ece92f85SJason Jin noDecode = (noDecode) ? 0 : 1; 311ece92f85SJason Jin printk("Toggled decoding to %s\n", 312*472d5460SYork Sun (noDecode) ? "false" : "true"); 313ece92f85SJason Jin break; 314ece92f85SJason Jin case 't': 315ece92f85SJason Jin case 0: 316ece92f85SJason Jin done = 1; 317ece92f85SJason Jin break; 318ece92f85SJason Jin } 319ece92f85SJason Jin } 320ece92f85SJason Jin } 321ece92f85SJason Jin 322ece92f85SJason Jin int X86EMU_trace_on(void) 323ece92f85SJason Jin { 324ece92f85SJason Jin return M.x86.debug |= DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F; 325ece92f85SJason Jin } 326ece92f85SJason Jin 327ece92f85SJason Jin int X86EMU_trace_off(void) 328ece92f85SJason Jin { 329ece92f85SJason Jin return M.x86.debug &= ~(DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F); 330ece92f85SJason Jin } 331ece92f85SJason Jin 3329029b68fSJason Jin static int x86emu_parse_line(char *s, int *ps, int *n) 333ece92f85SJason Jin { 334ece92f85SJason Jin int cmd; 335ece92f85SJason Jin 336ece92f85SJason Jin *n = 0; 3374d91a6ecSJason Hobbs while (isblank(*s)) 338ece92f85SJason Jin s++; 339ece92f85SJason Jin ps[*n] = *s; 340ece92f85SJason Jin switch (*s) { 341ece92f85SJason Jin case '\n': 342ece92f85SJason Jin *n += 1; 343ece92f85SJason Jin return 0; 344ece92f85SJason Jin default: 345ece92f85SJason Jin cmd = *s; 346ece92f85SJason Jin *n += 1; 347ece92f85SJason Jin } 348ece92f85SJason Jin 349ece92f85SJason Jin while (1) { 3504d91a6ecSJason Hobbs while (!isblank(*s) && *s != '\n') 351ece92f85SJason Jin s++; 352ece92f85SJason Jin 353ece92f85SJason Jin if (*s == '\n') 354ece92f85SJason Jin return cmd; 355ece92f85SJason Jin 3564d91a6ecSJason Hobbs while (isblank(*s)) 357ece92f85SJason Jin s++; 358ece92f85SJason Jin 359ece92f85SJason Jin *n += 1; 360ece92f85SJason Jin } 361ece92f85SJason Jin } 362ece92f85SJason Jin 363ece92f85SJason Jin #endif /* DEBUG */ 364ece92f85SJason Jin 365ece92f85SJason Jin void x86emu_dump_regs(void) 366ece92f85SJason Jin { 367ece92f85SJason Jin printk("\tAX=%04x ", M.x86.R_AX); 368ece92f85SJason Jin printk("BX=%04x ", M.x86.R_BX); 369ece92f85SJason Jin printk("CX=%04x ", M.x86.R_CX); 370ece92f85SJason Jin printk("DX=%04x ", M.x86.R_DX); 371ece92f85SJason Jin printk("SP=%04x ", M.x86.R_SP); 372ece92f85SJason Jin printk("BP=%04x ", M.x86.R_BP); 373ece92f85SJason Jin printk("SI=%04x ", M.x86.R_SI); 374ece92f85SJason Jin printk("DI=%04x\n", M.x86.R_DI); 375ece92f85SJason Jin printk("\tDS=%04x ", M.x86.R_DS); 376ece92f85SJason Jin printk("ES=%04x ", M.x86.R_ES); 377ece92f85SJason Jin printk("SS=%04x ", M.x86.R_SS); 378ece92f85SJason Jin printk("CS=%04x ", M.x86.R_CS); 379ece92f85SJason Jin printk("IP=%04x ", M.x86.R_IP); 380ece92f85SJason Jin if (ACCESS_FLAG(F_OF)) 381ece92f85SJason Jin printk("OV "); /* CHECKED... */ 382ece92f85SJason Jin else 383ece92f85SJason Jin printk("NV "); 384ece92f85SJason Jin if (ACCESS_FLAG(F_DF)) 385ece92f85SJason Jin printk("DN "); 386ece92f85SJason Jin else 387ece92f85SJason Jin printk("UP "); 388ece92f85SJason Jin if (ACCESS_FLAG(F_IF)) 389ece92f85SJason Jin printk("EI "); 390ece92f85SJason Jin else 391ece92f85SJason Jin printk("DI "); 392ece92f85SJason Jin if (ACCESS_FLAG(F_SF)) 393ece92f85SJason Jin printk("NG "); 394ece92f85SJason Jin else 395ece92f85SJason Jin printk("PL "); 396ece92f85SJason Jin if (ACCESS_FLAG(F_ZF)) 397ece92f85SJason Jin printk("ZR "); 398ece92f85SJason Jin else 399ece92f85SJason Jin printk("NZ "); 400ece92f85SJason Jin if (ACCESS_FLAG(F_AF)) 401ece92f85SJason Jin printk("AC "); 402ece92f85SJason Jin else 403ece92f85SJason Jin printk("NA "); 404ece92f85SJason Jin if (ACCESS_FLAG(F_PF)) 405ece92f85SJason Jin printk("PE "); 406ece92f85SJason Jin else 407ece92f85SJason Jin printk("PO "); 408ece92f85SJason Jin if (ACCESS_FLAG(F_CF)) 409ece92f85SJason Jin printk("CY "); 410ece92f85SJason Jin else 411ece92f85SJason Jin printk("NC "); 412ece92f85SJason Jin printk("\n"); 413ece92f85SJason Jin } 414ece92f85SJason Jin 415ece92f85SJason Jin void x86emu_dump_xregs(void) 416ece92f85SJason Jin { 417ece92f85SJason Jin printk("\tEAX=%08x ", M.x86.R_EAX); 418ece92f85SJason Jin printk("EBX=%08x ", M.x86.R_EBX); 419ece92f85SJason Jin printk("ECX=%08x ", M.x86.R_ECX); 420ece92f85SJason Jin printk("EDX=%08x \n", M.x86.R_EDX); 421ece92f85SJason Jin printk("\tESP=%08x ", M.x86.R_ESP); 422ece92f85SJason Jin printk("EBP=%08x ", M.x86.R_EBP); 423ece92f85SJason Jin printk("ESI=%08x ", M.x86.R_ESI); 424ece92f85SJason Jin printk("EDI=%08x\n", M.x86.R_EDI); 425ece92f85SJason Jin printk("\tDS=%04x ", M.x86.R_DS); 426ece92f85SJason Jin printk("ES=%04x ", M.x86.R_ES); 427ece92f85SJason Jin printk("SS=%04x ", M.x86.R_SS); 428ece92f85SJason Jin printk("CS=%04x ", M.x86.R_CS); 429ece92f85SJason Jin printk("EIP=%08x\n\t", M.x86.R_EIP); 430ece92f85SJason Jin if (ACCESS_FLAG(F_OF)) 431ece92f85SJason Jin printk("OV "); /* CHECKED... */ 432ece92f85SJason Jin else 433ece92f85SJason Jin printk("NV "); 434ece92f85SJason Jin if (ACCESS_FLAG(F_DF)) 435ece92f85SJason Jin printk("DN "); 436ece92f85SJason Jin else 437ece92f85SJason Jin printk("UP "); 438ece92f85SJason Jin if (ACCESS_FLAG(F_IF)) 439ece92f85SJason Jin printk("EI "); 440ece92f85SJason Jin else 441ece92f85SJason Jin printk("DI "); 442ece92f85SJason Jin if (ACCESS_FLAG(F_SF)) 443ece92f85SJason Jin printk("NG "); 444ece92f85SJason Jin else 445ece92f85SJason Jin printk("PL "); 446ece92f85SJason Jin if (ACCESS_FLAG(F_ZF)) 447ece92f85SJason Jin printk("ZR "); 448ece92f85SJason Jin else 449ece92f85SJason Jin printk("NZ "); 450ece92f85SJason Jin if (ACCESS_FLAG(F_AF)) 451ece92f85SJason Jin printk("AC "); 452ece92f85SJason Jin else 453ece92f85SJason Jin printk("NA "); 454ece92f85SJason Jin if (ACCESS_FLAG(F_PF)) 455ece92f85SJason Jin printk("PE "); 456ece92f85SJason Jin else 457ece92f85SJason Jin printk("PO "); 458ece92f85SJason Jin if (ACCESS_FLAG(F_CF)) 459ece92f85SJason Jin printk("CY "); 460ece92f85SJason Jin else 461ece92f85SJason Jin printk("NC "); 462ece92f85SJason Jin printk("\n"); 463ece92f85SJason Jin } 464