4 * Copyright (c) 2003 Fabrice Bellard
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define DEBUG_LOGFILE "/tmp/qemu.log"
32 #include <crt_externs.h>
33 # define environ (*_NSGetEnviron())
36 static const char *interp_prefix = CONFIG_QEMU_PREFIX;
38 #if defined(__i386__) && !defined(CONFIG_STATIC)
39 /* Force usage of an ELF interpreter even if it is an ELF shared
41 const char interp[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2";
44 /* for recent libc, we add these dummy symbols which are not declared
45 when generating a linked object (bug in ld ?) */
46 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(CONFIG_STATIC)
47 long __preinit_array_start[0];
48 long __preinit_array_end[0];
49 long __init_array_start[0];
50 long __init_array_end[0];
51 long __fini_array_start[0];
52 long __fini_array_end[0];
55 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
56 we allocate a bigger stack. Need a better solution, for example
57 by remapping the process stack directly at the right place */
58 unsigned long x86_stack_size = 512 * 1024;
60 void gemu_log(const char *fmt, ...)
65 vfprintf(stderr, fmt, ap);
69 void cpu_outb(CPUState *env, int addr, int val)
71 fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
74 void cpu_outw(CPUState *env, int addr, int val)
76 fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
79 void cpu_outl(CPUState *env, int addr, int val)
81 fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
84 int cpu_inb(CPUState *env, int addr)
86 fprintf(stderr, "inb: port=0x%04x\n", addr);
90 int cpu_inw(CPUState *env, int addr)
92 fprintf(stderr, "inw: port=0x%04x\n", addr);
96 int cpu_inl(CPUState *env, int addr)
98 fprintf(stderr, "inl: port=0x%04x\n", addr);
102 int cpu_get_pic_interrupt(CPUState *env)
107 /* timers for rdtsc */
109 #if defined(__i386__)
111 int64_t cpu_get_real_ticks(void)
114 asm volatile ("rdtsc" : "=A" (val));
118 #elif defined(__x86_64__)
120 int64_t cpu_get_real_ticks(void)
124 asm volatile("rdtsc" : "=a" (low), "=d" (high));
133 static uint64_t emu_time;
135 int64_t cpu_get_real_ticks(void)
143 /***********************************************************/
144 /* CPUX86 core interface */
146 uint64_t cpu_get_tsc(CPUX86State *env)
148 return cpu_get_real_ticks();
151 static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
155 e1 = (addr << 16) | (limit & 0xffff);
156 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
158 stl((uint8_t *)ptr, e1);
159 stl((uint8_t *)ptr + 4, e2);
162 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
163 unsigned long addr, unsigned int sel)
166 e1 = (addr & 0xffff) | (sel << 16);
167 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
168 stl((uint8_t *)ptr, e1);
169 stl((uint8_t *)ptr + 4, e2);
172 uint64_t gdt_table[6];
173 uint64_t idt_table[256];
175 /* only dpl matters as we do only user space emulation */
176 static void set_idt(int n, unsigned int dpl)
178 set_gate(idt_table + n, 0, dpl, 0, 0);
181 void cpu_loop(CPUX86State *env)
185 target_siginfo_t info;
188 trapnr = cpu_x86_exec(env);
192 env->regs[R_EAX] = do_syscall(env,
203 info.si_signo = SIGBUS;
205 info.si_code = TARGET_SI_KERNEL;
206 info._sifields._sigfault._addr = 0;
207 queue_signal(info.si_signo, &info);
210 if (env->eflags & VM_MASK) {
211 handle_vm86_fault(env);
213 info.si_signo = SIGSEGV;
215 info.si_code = TARGET_SI_KERNEL;
216 info._sifields._sigfault._addr = 0;
217 queue_signal(info.si_signo, &info);
221 info.si_signo = SIGSEGV;
223 if (!(env->error_code & 1))
224 info.si_code = TARGET_SEGV_MAPERR;
226 info.si_code = TARGET_SEGV_ACCERR;
227 info._sifields._sigfault._addr = env->cr[2];
228 queue_signal(info.si_signo, &info);
231 if (env->eflags & VM_MASK) {
232 handle_vm86_trap(env, trapnr);
234 /* division by zero */
235 info.si_signo = SIGFPE;
237 info.si_code = TARGET_FPE_INTDIV;
238 info._sifields._sigfault._addr = env->eip;
239 queue_signal(info.si_signo, &info);
244 if (env->eflags & VM_MASK) {
245 handle_vm86_trap(env, trapnr);
247 info.si_signo = SIGTRAP;
249 if (trapnr == EXCP01_SSTP) {
250 info.si_code = TARGET_TRAP_BRKPT;
251 info._sifields._sigfault._addr = env->eip;
253 info.si_code = TARGET_SI_KERNEL;
254 info._sifields._sigfault._addr = 0;
256 queue_signal(info.si_signo, &info);
261 if (env->eflags & VM_MASK) {
262 handle_vm86_trap(env, trapnr);
264 info.si_signo = SIGSEGV;
266 info.si_code = TARGET_SI_KERNEL;
267 info._sifields._sigfault._addr = 0;
268 queue_signal(info.si_signo, &info);
272 info.si_signo = SIGILL;
274 info.si_code = TARGET_ILL_ILLOPN;
275 info._sifields._sigfault._addr = env->eip;
276 queue_signal(info.si_signo, &info);
279 /* just indicate that signals should be handled asap */
285 sig = gdb_handlesig (env, TARGET_SIGTRAP);
290 info.si_code = TARGET_TRAP_BRKPT;
291 queue_signal(info.si_signo, &info);
296 pc = env->segs[R_CS].base + env->eip;
297 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
301 process_pending_signals(env);
308 /* XXX: find a better solution */
309 extern void tb_invalidate_page_range(target_ulong start, target_ulong end);
311 static void arm_cache_flush(target_ulong start, target_ulong last)
313 target_ulong addr, last1;
319 last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
322 tb_invalidate_page_range(addr, last1 + 1);
329 void cpu_loop(CPUARMState *env)
332 unsigned int n, insn;
333 target_siginfo_t info;
336 trapnr = cpu_arm_exec(env);
340 TaskState *ts = env->opaque;
343 /* we handle the FPU emulation here, as Linux */
344 /* we get the opcode */
345 opcode = ldl_raw((uint8_t *)env->regs[15]);
347 if (EmulateAll(opcode, &ts->fpa, env->regs) == 0) {
348 info.si_signo = SIGILL;
350 info.si_code = TARGET_ILL_ILLOPN;
351 info._sifields._sigfault._addr = env->regs[15];
352 queue_signal(info.si_signo, &info);
363 insn = lduw((void *)(env->regs[15] - 2));
366 insn = ldl((void *)(env->regs[15] - 4));
370 if (n == ARM_NR_cacheflush) {
371 arm_cache_flush(env->regs[0], env->regs[1]);
372 } else if (n == ARM_NR_semihosting
373 || n == ARM_NR_thumb_semihosting) {
374 env->regs[0] = do_arm_semihosting (env);
375 } else if (n >= ARM_SYSCALL_BASE
376 || (env->thumb && n == ARM_THUMB_SYSCALL)) {
381 n -= ARM_SYSCALL_BASE;
383 env->regs[0] = do_syscall(env,
397 /* just indicate that signals should be handled asap */
399 case EXCP_PREFETCH_ABORT:
400 case EXCP_DATA_ABORT:
402 info.si_signo = SIGSEGV;
404 /* XXX: check env->error_code */
405 info.si_code = TARGET_SEGV_MAPERR;
406 info._sifields._sigfault._addr = env->cp15_6;
407 queue_signal(info.si_signo, &info);
414 sig = gdb_handlesig (env, TARGET_SIGTRAP);
419 info.si_code = TARGET_TRAP_BRKPT;
420 queue_signal(info.si_signo, &info);
426 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
428 cpu_dump_state(env, stderr, fprintf, 0);
431 process_pending_signals(env);
441 /* WARNING: dealing with register windows _is_ complicated. More info
442 can be found at http://www.sics.se/~psm/sparcstack.html */
443 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
445 index = (index + cwp * 16) & (16 * NWINDOWS - 1);
446 /* wrap handling : if cwp is on the last window, then we use the
447 registers 'after' the end */
448 if (index < 8 && env->cwp == (NWINDOWS - 1))
449 index += (16 * NWINDOWS);
453 /* save the register window 'cwp1' */
454 static inline void save_window_offset(CPUSPARCState *env, int cwp1)
459 sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
460 #if defined(DEBUG_WIN)
461 printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
464 for(i = 0; i < 16; i++) {
465 put_user(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
470 static void save_window(CPUSPARCState *env)
472 unsigned int new_wim;
473 new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) &
474 ((1LL << NWINDOWS) - 1);
475 save_window_offset(env, (env->cwp - 2) & (NWINDOWS - 1));
479 static void restore_window(CPUSPARCState *env)
481 unsigned int new_wim, i, cwp1;
482 uint32_t *sp_ptr, reg;
484 new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) &
485 ((1LL << NWINDOWS) - 1);
487 /* restore the invalid window */
488 cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
489 sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
490 #if defined(DEBUG_WIN)
491 printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
494 for(i = 0; i < 16; i++) {
495 get_user(reg, sp_ptr);
496 env->regbase[get_reg_index(env, cwp1, 8 + i)] = reg;
502 static void flush_windows(CPUSPARCState *env)
508 /* if restore would invoke restore_window(), then we can stop */
509 cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
510 if (env->wim & (1 << cwp1))
512 save_window_offset(env, cwp1);
515 /* set wim so that restore will reload the registers */
516 cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
517 env->wim = 1 << cwp1;
518 #if defined(DEBUG_WIN)
519 printf("flush_windows: nb=%d\n", offset - 1);
523 void cpu_loop (CPUSPARCState *env)
526 target_siginfo_t info;
529 trapnr = cpu_sparc_exec (env);
534 ret = do_syscall (env, env->gregs[1],
535 env->regwptr[0], env->regwptr[1],
536 env->regwptr[2], env->regwptr[3],
537 env->regwptr[4], env->regwptr[5]);
538 if ((unsigned int)ret >= (unsigned int)(-515)) {
539 env->psr |= PSR_CARRY;
542 env->psr &= ~PSR_CARRY;
544 env->regwptr[0] = ret;
545 /* next instruction */
547 env->npc = env->npc + 4;
549 case 0x83: /* flush windows */
551 /* next instruction */
553 env->npc = env->npc + 4;
555 #ifndef TARGET_SPARC64
556 case TT_WIN_OVF: /* window overflow */
559 case TT_WIN_UNF: /* window underflow */
565 info.si_signo = SIGSEGV;
567 /* XXX: check env->error_code */
568 info.si_code = TARGET_SEGV_MAPERR;
569 info._sifields._sigfault._addr = env->mmuregs[4];
570 queue_signal(info.si_signo, &info);
576 case 0x100: // XXX, why do we get these?
582 sig = gdb_handlesig (env, TARGET_SIGTRAP);
587 info.si_code = TARGET_TRAP_BRKPT;
588 queue_signal(info.si_signo, &info);
593 printf ("Unhandled trap: 0x%x\n", trapnr);
594 cpu_dump_state(env, stderr, fprintf, 0);
597 process_pending_signals (env);
605 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
611 uint32_t cpu_ppc_load_tbl (CPUState *env)
613 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
616 uint32_t cpu_ppc_load_tbu (CPUState *env)
618 return cpu_ppc_get_tb(env) >> 32;
621 static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
626 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
628 cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
631 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
633 cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
636 uint32_t cpu_ppc_load_decr (CPUState *env)
642 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
647 void cpu_loop(CPUPPCState *env)
649 target_siginfo_t info;
654 trapnr = cpu_ppc_exec(env);
655 if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
656 trapnr != EXCP_TRACE) {
658 cpu_dump_state(env, logfile, fprintf, 0);
664 case EXCP_SYSCALL_USER:
667 * PPC ABI uses overflow flag in cr0 to signal an error
671 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
672 env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
675 ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
676 env->gpr[5], env->gpr[6], env->gpr[7],
678 if (ret > (uint32_t)(-515)) {
684 printf("syscall returned 0x%08x (%d)\n", ret, ret);
688 /* Should not happen ! */
689 fprintf(stderr, "RESET asked... Stop emulation\n");
691 fprintf(logfile, "RESET asked... Stop emulation\n");
693 case EXCP_MACHINE_CHECK:
694 fprintf(stderr, "Machine check exeption... Stop emulation\n");
696 fprintf(logfile, "RESET asked... Stop emulation\n");
697 info.si_signo = TARGET_SIGBUS;
699 info.si_code = TARGET_BUS_OBJERR;
700 info._sifields._sigfault._addr = env->nip - 4;
701 queue_signal(info.si_signo, &info);
703 fprintf(stderr, "Invalid data memory access: 0x%08x\n",
706 fprintf(logfile, "Invalid data memory access: 0x%08x\n",
709 switch (env->error_code & 0xFF000000) {
711 info.si_signo = TARGET_SIGSEGV;
713 info.si_code = TARGET_SEGV_MAPERR;
716 info.si_signo = TARGET_SIGILL;
718 info.si_code = TARGET_ILL_ILLADR;
721 info.si_signo = TARGET_SIGSEGV;
723 info.si_code = TARGET_SEGV_ACCERR;
726 /* Let's send a regular segfault... */
727 fprintf(stderr, "Invalid segfault errno (%02x)\n",
730 fprintf(logfile, "Invalid segfault errno (%02x)\n",
733 info.si_signo = TARGET_SIGSEGV;
735 info.si_code = TARGET_SEGV_MAPERR;
738 info._sifields._sigfault._addr = env->nip;
739 queue_signal(info.si_signo, &info);
742 fprintf(stderr, "Invalid instruction fetch\n");
744 fprintf(logfile, "Invalid instruction fetch\n");
745 switch (env->error_code & 0xFF000000) {
747 info.si_signo = TARGET_SIGSEGV;
749 info.si_code = TARGET_SEGV_MAPERR;
753 info.si_signo = TARGET_SIGSEGV;
755 info.si_code = TARGET_SEGV_ACCERR;
758 /* Let's send a regular segfault... */
759 fprintf(stderr, "Invalid segfault errno (%02x)\n",
762 fprintf(logfile, "Invalid segfault errno (%02x)\n",
765 info.si_signo = TARGET_SIGSEGV;
767 info.si_code = TARGET_SEGV_MAPERR;
770 info._sifields._sigfault._addr = env->nip - 4;
771 queue_signal(info.si_signo, &info);
774 /* Should not happen ! */
775 fprintf(stderr, "External interruption... Stop emulation\n");
777 fprintf(logfile, "External interruption... Stop emulation\n");
780 fprintf(stderr, "Invalid unaligned memory access\n");
782 fprintf(logfile, "Invalid unaligned memory access\n");
783 info.si_signo = TARGET_SIGBUS;
785 info.si_code = TARGET_BUS_ADRALN;
786 info._sifields._sigfault._addr = env->nip - 4;
787 queue_signal(info.si_signo, &info);
790 switch (env->error_code & ~0xF) {
792 fprintf(stderr, "Program exception\n");
794 fprintf(logfile, "Program exception\n");
796 env->fpscr[7] |= 0x8;
797 /* Finally, update FEX */
798 if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
799 ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
800 env->fpscr[7] |= 0x4;
801 info.si_signo = TARGET_SIGFPE;
803 switch (env->error_code & 0xF) {
805 info.si_code = TARGET_FPE_FLTOVF;
808 info.si_code = TARGET_FPE_FLTUND;
812 info.si_code = TARGET_FPE_FLTDIV;
815 info.si_code = TARGET_FPE_FLTRES;
818 info.si_code = TARGET_FPE_FLTINV;
827 info.si_code = TARGET_FPE_FLTSUB;
830 fprintf(stderr, "Unknown floating point exception "
831 "(%02x)\n", env->error_code);
833 fprintf(logfile, "Unknown floating point exception "
834 "(%02x)\n", env->error_code & 0xF);
839 fprintf(stderr, "Invalid instruction\n");
841 fprintf(logfile, "Invalid instruction\n");
842 info.si_signo = TARGET_SIGILL;
844 switch (env->error_code & 0xF) {
845 case EXCP_INVAL_INVAL:
846 info.si_code = TARGET_ILL_ILLOPC;
848 case EXCP_INVAL_LSWX:
849 info.si_code = TARGET_ILL_ILLOPN;
852 info.si_code = TARGET_ILL_PRVREG;
855 info.si_code = TARGET_ILL_COPROC;
858 fprintf(stderr, "Unknown invalid operation (%02x)\n",
859 env->error_code & 0xF);
861 fprintf(logfile, "Unknown invalid operation (%02x)\n",
862 env->error_code & 0xF);
864 info.si_code = TARGET_ILL_ILLADR;
869 fprintf(stderr, "Privilege violation\n");
871 fprintf(logfile, "Privilege violation\n");
872 info.si_signo = TARGET_SIGILL;
874 switch (env->error_code & 0xF) {
876 info.si_code = TARGET_ILL_PRVOPC;
879 info.si_code = TARGET_ILL_PRVREG;
882 fprintf(stderr, "Unknown privilege violation (%02x)\n",
883 env->error_code & 0xF);
884 info.si_code = TARGET_ILL_PRVOPC;
889 fprintf(stderr, "Tried to call a TRAP\n");
891 fprintf(logfile, "Tried to call a TRAP\n");
894 /* Should not happen ! */
895 fprintf(stderr, "Unknown program exception (%02x)\n",
898 fprintf(logfile, "Unknwon program exception (%02x)\n",
903 info._sifields._sigfault._addr = env->nip - 4;
904 queue_signal(info.si_signo, &info);
907 fprintf(stderr, "No floating point allowed\n");
909 fprintf(logfile, "No floating point allowed\n");
910 info.si_signo = TARGET_SIGILL;
912 info.si_code = TARGET_ILL_COPROC;
913 info._sifields._sigfault._addr = env->nip - 4;
914 queue_signal(info.si_signo, &info);
917 /* Should not happen ! */
918 fprintf(stderr, "Decrementer exception\n");
920 fprintf(logfile, "Decrementer exception\n");
923 /* Do nothing: we use this to trace execution */
926 /* Should not happen ! */
927 fprintf(stderr, "Floating point assist exception\n");
929 fprintf(logfile, "Floating point assist exception\n");
932 /* We reloaded the msr, just go on */
934 fprintf(stderr, "Tried to go into supervisor mode !\n");
936 fprintf(logfile, "Tried to go into supervisor mode !\n");
941 /* We stopped because of a jump... */
944 /* Don't know why this should ever happen... */
950 sig = gdb_handlesig (env, TARGET_SIGTRAP);
955 info.si_code = TARGET_TRAP_BRKPT;
956 queue_signal(info.si_signo, &info);
961 fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
964 fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
965 "0x%02x - aborting\n", trapnr, env->error_code);
969 process_pending_signals(env);
976 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2005 Fabrice Bellard\n"
977 "usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] program [arguments...]\n"
978 "Linux CPU emulator (compiled for %s emulation)\n"
980 "-h print this help\n"
981 "-g wait gdb connection to port %d\n"
982 "-L path set the elf interpreter prefix (default=%s)\n"
983 "-s size set the stack size in bytes (default=%ld)\n"
987 "-no-code-copy disable code copy acceleration\n"
989 "-d options activate log (logfile=%s)\n"
990 "-p pagesize set the host page size to 'pagesize'\n",
992 DEFAULT_GDBSTUB_PORT,
999 /* XXX: currently only used for async signals (see signal.c) */
1000 CPUState *global_env;
1001 /* used only if single thread */
1002 CPUState *cpu_single_env = NULL;
1004 /* used to free thread contexts */
1005 TaskState *first_task_state;
1007 int main(int argc, char **argv)
1009 const char *filename;
1010 struct target_pt_regs regs1, *regs = ®s1;
1011 struct image_info info1, *info = &info1;
1012 TaskState ts1, *ts = &ts1;
1016 int use_gdbstub = 0;
1022 cpu_set_log_filename(DEBUG_LOGFILE);
1033 if (!strcmp(r, "-")) {
1035 } else if (!strcmp(r, "d")) {
1043 mask = cpu_str_to_log_mask(r);
1045 printf("Log items (comma separated):\n");
1046 for(item = cpu_log_items; item->mask != 0; item++) {
1047 printf("%-10s %s\n", item->name, item->help);
1052 } else if (!strcmp(r, "s")) {
1054 x86_stack_size = strtol(r, (char **)&r, 0);
1055 if (x86_stack_size <= 0)
1058 x86_stack_size *= 1024 * 1024;
1059 else if (*r == 'k' || *r == 'K')
1060 x86_stack_size *= 1024;
1061 } else if (!strcmp(r, "L")) {
1062 interp_prefix = argv[optind++];
1063 } else if (!strcmp(r, "p")) {
1064 qemu_host_page_size = atoi(argv[optind++]);
1065 if (qemu_host_page_size == 0 ||
1066 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
1067 fprintf(stderr, "page size must be a power of two\n");
1070 } else if (!strcmp(r, "g")) {
1073 #ifdef USE_CODE_COPY
1074 if (!strcmp(r, "no-code-copy")) {
1075 code_copy_enabled = 0;
1084 filename = argv[optind];
1087 memset(regs, 0, sizeof(struct target_pt_regs));
1089 /* Zero out image_info */
1090 memset(info, 0, sizeof(struct image_info));
1092 /* Scan interp_prefix dir for replacement files. */
1093 init_paths(interp_prefix);
1095 /* NOTE: we need to init the CPU at this stage to get
1096 qemu_host_page_size */
1099 if (elf_exec(filename, argv+optind, environ, regs, info) != 0) {
1100 printf("Error loading %s\n", filename);
1107 fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
1108 fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
1109 fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
1110 fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
1111 fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
1112 fprintf(logfile, "brk 0x%08lx\n" , info->brk);
1113 fprintf(logfile, "entry 0x%08lx\n" , info->entry);
1116 target_set_brk((char *)info->brk);
1122 /* build Task State */
1123 memset(ts, 0, sizeof(TaskState));
1126 env->user_mode_only = 1;
1128 #if defined(TARGET_I386)
1129 cpu_x86_set_cpl(env, 3);
1131 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
1132 env->hflags |= HF_PE_MASK;
1133 if (env->cpuid_features & CPUID_SSE) {
1134 env->cr[4] |= CR4_OSFXSR_MASK;
1135 env->hflags |= HF_OSFXSR_MASK;
1138 /* flags setup : we activate the IRQs by default as in user mode */
1139 env->eflags |= IF_MASK;
1141 /* linux register setup */
1142 env->regs[R_EAX] = regs->eax;
1143 env->regs[R_EBX] = regs->ebx;
1144 env->regs[R_ECX] = regs->ecx;
1145 env->regs[R_EDX] = regs->edx;
1146 env->regs[R_ESI] = regs->esi;
1147 env->regs[R_EDI] = regs->edi;
1148 env->regs[R_EBP] = regs->ebp;
1149 env->regs[R_ESP] = regs->esp;
1150 env->eip = regs->eip;
1152 /* linux interrupt setup */
1153 env->idt.base = (long)idt_table;
1154 env->idt.limit = sizeof(idt_table) - 1;
1177 /* linux segment setup */
1178 env->gdt.base = (long)gdt_table;
1179 env->gdt.limit = sizeof(gdt_table) - 1;
1180 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1181 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1182 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1183 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1184 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1185 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1186 cpu_x86_load_seg(env, R_CS, __USER_CS);
1187 cpu_x86_load_seg(env, R_DS, __USER_DS);
1188 cpu_x86_load_seg(env, R_ES, __USER_DS);
1189 cpu_x86_load_seg(env, R_SS, __USER_DS);
1190 cpu_x86_load_seg(env, R_FS, __USER_DS);
1191 cpu_x86_load_seg(env, R_GS, __USER_DS);
1193 #elif defined(TARGET_ARM)
1196 for(i = 0; i < 16; i++) {
1197 env->regs[i] = regs->uregs[i];
1199 env->cpsr = regs->uregs[16];
1200 ts->stack_base = info->start_stack;
1201 ts->heap_base = info->brk;
1202 /* This will be filled in on the first SYS_HEAPINFO call. */
1205 #elif defined(TARGET_SPARC)
1209 env->npc = regs->npc;
1211 for(i = 0; i < 8; i++)
1212 env->gregs[i] = regs->u_regs[i];
1213 for(i = 0; i < 8; i++)
1214 env->regwptr[i] = regs->u_regs[i + 8];
1216 #elif defined(TARGET_PPC)
1221 /* Choose and initialise CPU */
1222 /* XXX: CPU model (or PVR) should be provided on command line */
1223 // ppc_find_by_name("750gx", &def);
1224 // ppc_find_by_name("750fx", &def);
1225 // ppc_find_by_name("750p", &def);
1226 ppc_find_by_name("750", &def);
1227 // ppc_find_by_name("G3", &def);
1228 // ppc_find_by_name("604r", &def);
1229 // ppc_find_by_name("604e", &def);
1230 // ppc_find_by_name("604", &def);
1232 cpu_abort(cpu_single_env,
1233 "Unable to find PowerPC CPU definition\n");
1235 cpu_ppc_register(cpu_single_env, def);
1237 for (i = 0; i < 32; i++) {
1238 if (i != 12 && i != 6 && i != 13)
1239 env->msr[i] = (regs->msr >> i) & 1;
1241 env->nip = regs->nip;
1242 for(i = 0; i < 32; i++) {
1243 env->gpr[i] = regs->gpr[i];
1247 #error unsupported target CPU
1251 gdbserver_start (DEFAULT_GDBSTUB_PORT);
1252 gdb_handlesig(env, 0);