184778508Sblueswir1 /* 284778508Sblueswir1 * qemu user main 384778508Sblueswir1 * 484778508Sblueswir1 * Copyright (c) 2003-2008 Fabrice Bellard 584778508Sblueswir1 * 684778508Sblueswir1 * This program is free software; you can redistribute it and/or modify 784778508Sblueswir1 * it under the terms of the GNU General Public License as published by 884778508Sblueswir1 * the Free Software Foundation; either version 2 of the License, or 984778508Sblueswir1 * (at your option) any later version. 1084778508Sblueswir1 * 1184778508Sblueswir1 * This program is distributed in the hope that it will be useful, 1284778508Sblueswir1 * but WITHOUT ANY WARRANTY; without even the implied warranty of 1384778508Sblueswir1 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1484778508Sblueswir1 * GNU General Public License for more details. 1584778508Sblueswir1 * 1684778508Sblueswir1 * You should have received a copy of the GNU General Public License 178167ee88SBlue Swirl * along with this program; if not, see <http://www.gnu.org/licenses/>. 1884778508Sblueswir1 */ 192231197cSPeter Maydell #include "qemu/osdep.h" 2084778508Sblueswir1 #include <machine/trap.h> 2131fc12dfSblueswir1 #include <sys/mman.h> 2284778508Sblueswir1 2384778508Sblueswir1 #include "qemu.h" 24f348b6d1SVeronia Bahaa #include "qemu/path.h" 25f348b6d1SVeronia Bahaa #include "qemu/help_option.h" 2684778508Sblueswir1 /* For tb_lock */ 272b41f10eSBlue Swirl #include "cpu.h" 289002ec79SRichard Henderson #include "tcg.h" 291de7afc9SPaolo Bonzini #include "qemu/timer.h" 301de7afc9SPaolo Bonzini #include "qemu/envlist.h" 31508127e2SPaolo Bonzini #include "exec/log.h" 32fc0d96b4SBlue Swirl 331b530a6dSaurel32 int singlestep; 342fa5d9baSBlue Swirl unsigned long mmap_min_addr; 352fa5d9baSBlue Swirl unsigned long guest_base; 362fa5d9baSBlue Swirl int have_guest_base; 37d6ef40bfSPeter Maydell unsigned long reserved_va; 381b530a6dSaurel32 397ee2822cSPaolo Bonzini static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; 40fccae322SPeter Maydell const char *qemu_uname_release; 4184778508Sblueswir1 extern char **environ; 4278cfb07fSJuergen Lock enum BSDType bsd_type; 4384778508Sblueswir1 4484778508Sblueswir1 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so 4584778508Sblueswir1 we allocate a bigger stack. Need a better solution, for example 4684778508Sblueswir1 by remapping the process stack directly at the right place */ 4784778508Sblueswir1 unsigned long x86_stack_size = 512 * 1024; 4884778508Sblueswir1 4984778508Sblueswir1 void gemu_log(const char *fmt, ...) 5084778508Sblueswir1 { 5184778508Sblueswir1 va_list ap; 5284778508Sblueswir1 5384778508Sblueswir1 va_start(ap, fmt); 5484778508Sblueswir1 vfprintf(stderr, fmt, ap); 5584778508Sblueswir1 va_end(ap); 5684778508Sblueswir1 } 579399f095Sblueswir1 5831fc12dfSblueswir1 #if defined(TARGET_I386) 59b98e9ca8SAndreas Färber int cpu_get_pic_interrupt(CPUX86State *env) 6031fc12dfSblueswir1 { 6131fc12dfSblueswir1 return -1; 6231fc12dfSblueswir1 } 6331fc12dfSblueswir1 #endif 6431fc12dfSblueswir1 659399f095Sblueswir1 /* These are no-ops because we are not threadsafe. */ 669349b4f9SAndreas Färber static inline void cpu_exec_start(CPUArchState *env) 679399f095Sblueswir1 { 689399f095Sblueswir1 } 699399f095Sblueswir1 709349b4f9SAndreas Färber static inline void cpu_exec_end(CPUArchState *env) 719399f095Sblueswir1 { 729399f095Sblueswir1 } 739399f095Sblueswir1 749399f095Sblueswir1 static inline void start_exclusive(void) 759399f095Sblueswir1 { 769399f095Sblueswir1 } 779399f095Sblueswir1 789399f095Sblueswir1 static inline void end_exclusive(void) 799399f095Sblueswir1 { 809399f095Sblueswir1 } 819399f095Sblueswir1 829399f095Sblueswir1 void fork_start(void) 839399f095Sblueswir1 { 849399f095Sblueswir1 } 859399f095Sblueswir1 869399f095Sblueswir1 void fork_end(int child) 879399f095Sblueswir1 { 889399f095Sblueswir1 if (child) { 89f7ec7f7bSPeter Crosthwaite gdbserver_fork(thread_cpu); 909399f095Sblueswir1 } 919399f095Sblueswir1 } 929399f095Sblueswir1 939399f095Sblueswir1 void cpu_list_lock(void) 949399f095Sblueswir1 { 959399f095Sblueswir1 } 969399f095Sblueswir1 979399f095Sblueswir1 void cpu_list_unlock(void) 989399f095Sblueswir1 { 999399f095Sblueswir1 } 1009399f095Sblueswir1 10131fc12dfSblueswir1 #ifdef TARGET_I386 10231fc12dfSblueswir1 /***********************************************************/ 10331fc12dfSblueswir1 /* CPUX86 core interface */ 10431fc12dfSblueswir1 10531fc12dfSblueswir1 uint64_t cpu_get_tsc(CPUX86State *env) 10631fc12dfSblueswir1 { 1074a7428c5SChristopher Covington return cpu_get_host_ticks(); 10831fc12dfSblueswir1 } 10931fc12dfSblueswir1 11031fc12dfSblueswir1 static void write_dt(void *ptr, unsigned long addr, unsigned long limit, 11131fc12dfSblueswir1 int flags) 11231fc12dfSblueswir1 { 11331fc12dfSblueswir1 unsigned int e1, e2; 11431fc12dfSblueswir1 uint32_t *p; 11531fc12dfSblueswir1 e1 = (addr << 16) | (limit & 0xffff); 11631fc12dfSblueswir1 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); 11731fc12dfSblueswir1 e2 |= flags; 11831fc12dfSblueswir1 p = ptr; 11931fc12dfSblueswir1 p[0] = tswap32(e1); 12031fc12dfSblueswir1 p[1] = tswap32(e2); 12131fc12dfSblueswir1 } 12231fc12dfSblueswir1 12331fc12dfSblueswir1 static uint64_t *idt_table; 12431fc12dfSblueswir1 #ifdef TARGET_X86_64 12531fc12dfSblueswir1 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, 12631fc12dfSblueswir1 uint64_t addr, unsigned int sel) 12731fc12dfSblueswir1 { 12831fc12dfSblueswir1 uint32_t *p, e1, e2; 12931fc12dfSblueswir1 e1 = (addr & 0xffff) | (sel << 16); 13031fc12dfSblueswir1 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); 13131fc12dfSblueswir1 p = ptr; 13231fc12dfSblueswir1 p[0] = tswap32(e1); 13331fc12dfSblueswir1 p[1] = tswap32(e2); 13431fc12dfSblueswir1 p[2] = tswap32(addr >> 32); 13531fc12dfSblueswir1 p[3] = 0; 13631fc12dfSblueswir1 } 13731fc12dfSblueswir1 /* only dpl matters as we do only user space emulation */ 13831fc12dfSblueswir1 static void set_idt(int n, unsigned int dpl) 13931fc12dfSblueswir1 { 14031fc12dfSblueswir1 set_gate64(idt_table + n * 2, 0, dpl, 0, 0); 14131fc12dfSblueswir1 } 14231fc12dfSblueswir1 #else 14331fc12dfSblueswir1 static void set_gate(void *ptr, unsigned int type, unsigned int dpl, 14431fc12dfSblueswir1 uint32_t addr, unsigned int sel) 14531fc12dfSblueswir1 { 14631fc12dfSblueswir1 uint32_t *p, e1, e2; 14731fc12dfSblueswir1 e1 = (addr & 0xffff) | (sel << 16); 14831fc12dfSblueswir1 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); 14931fc12dfSblueswir1 p = ptr; 15031fc12dfSblueswir1 p[0] = tswap32(e1); 15131fc12dfSblueswir1 p[1] = tswap32(e2); 15231fc12dfSblueswir1 } 15331fc12dfSblueswir1 15431fc12dfSblueswir1 /* only dpl matters as we do only user space emulation */ 15531fc12dfSblueswir1 static void set_idt(int n, unsigned int dpl) 15631fc12dfSblueswir1 { 15731fc12dfSblueswir1 set_gate(idt_table + n, 0, dpl, 0, 0); 15831fc12dfSblueswir1 } 15931fc12dfSblueswir1 #endif 16031fc12dfSblueswir1 16178cfb07fSJuergen Lock void cpu_loop(CPUX86State *env) 16231fc12dfSblueswir1 { 163ea3e9847SPeter Crosthwaite X86CPU *cpu = x86_env_get_cpu(env); 164ea3e9847SPeter Crosthwaite CPUState *cs = CPU(cpu); 16531fc12dfSblueswir1 int trapnr; 16631fc12dfSblueswir1 abi_ulong pc; 16731fc12dfSblueswir1 //target_siginfo_t info; 16831fc12dfSblueswir1 16931fc12dfSblueswir1 for(;;) { 170cb48f67aSRichard Henderson trapnr = cpu_x86_exec(cs); 17131fc12dfSblueswir1 switch(trapnr) { 17231fc12dfSblueswir1 case 0x80: 17331fc12dfSblueswir1 /* syscall from int $0x80 */ 17478cfb07fSJuergen Lock if (bsd_type == target_freebsd) { 17578cfb07fSJuergen Lock abi_ulong params = (abi_ulong) env->regs[R_ESP] + 17678cfb07fSJuergen Lock sizeof(int32_t); 17778cfb07fSJuergen Lock int32_t syscall_nr = env->regs[R_EAX]; 17878cfb07fSJuergen Lock int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8; 17978cfb07fSJuergen Lock 18078cfb07fSJuergen Lock if (syscall_nr == TARGET_FREEBSD_NR_syscall) { 18178cfb07fSJuergen Lock get_user_s32(syscall_nr, params); 18278cfb07fSJuergen Lock params += sizeof(int32_t); 18378cfb07fSJuergen Lock } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) { 18478cfb07fSJuergen Lock get_user_s32(syscall_nr, params); 18578cfb07fSJuergen Lock params += sizeof(int64_t); 18678cfb07fSJuergen Lock } 18778cfb07fSJuergen Lock get_user_s32(arg1, params); 18878cfb07fSJuergen Lock params += sizeof(int32_t); 18978cfb07fSJuergen Lock get_user_s32(arg2, params); 19078cfb07fSJuergen Lock params += sizeof(int32_t); 19178cfb07fSJuergen Lock get_user_s32(arg3, params); 19278cfb07fSJuergen Lock params += sizeof(int32_t); 19378cfb07fSJuergen Lock get_user_s32(arg4, params); 19478cfb07fSJuergen Lock params += sizeof(int32_t); 19578cfb07fSJuergen Lock get_user_s32(arg5, params); 19678cfb07fSJuergen Lock params += sizeof(int32_t); 19778cfb07fSJuergen Lock get_user_s32(arg6, params); 19878cfb07fSJuergen Lock params += sizeof(int32_t); 19978cfb07fSJuergen Lock get_user_s32(arg7, params); 20078cfb07fSJuergen Lock params += sizeof(int32_t); 20178cfb07fSJuergen Lock get_user_s32(arg8, params); 20278cfb07fSJuergen Lock env->regs[R_EAX] = do_freebsd_syscall(env, 20378cfb07fSJuergen Lock syscall_nr, 20478cfb07fSJuergen Lock arg1, 20578cfb07fSJuergen Lock arg2, 20678cfb07fSJuergen Lock arg3, 20778cfb07fSJuergen Lock arg4, 20878cfb07fSJuergen Lock arg5, 20978cfb07fSJuergen Lock arg6, 21078cfb07fSJuergen Lock arg7, 21178cfb07fSJuergen Lock arg8); 21278cfb07fSJuergen Lock } else { //if (bsd_type == target_openbsd) 21331fc12dfSblueswir1 env->regs[R_EAX] = do_openbsd_syscall(env, 21431fc12dfSblueswir1 env->regs[R_EAX], 21531fc12dfSblueswir1 env->regs[R_EBX], 21631fc12dfSblueswir1 env->regs[R_ECX], 21731fc12dfSblueswir1 env->regs[R_EDX], 21831fc12dfSblueswir1 env->regs[R_ESI], 21931fc12dfSblueswir1 env->regs[R_EDI], 22031fc12dfSblueswir1 env->regs[R_EBP]); 22178cfb07fSJuergen Lock } 22278cfb07fSJuergen Lock if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { 22378cfb07fSJuergen Lock env->regs[R_EAX] = -env->regs[R_EAX]; 22478cfb07fSJuergen Lock env->eflags |= CC_C; 22578cfb07fSJuergen Lock } else { 22678cfb07fSJuergen Lock env->eflags &= ~CC_C; 22778cfb07fSJuergen Lock } 22831fc12dfSblueswir1 break; 22931fc12dfSblueswir1 #ifndef TARGET_ABI32 23031fc12dfSblueswir1 case EXCP_SYSCALL: 2315ba18547SStefan Weil /* syscall from syscall instruction */ 23278cfb07fSJuergen Lock if (bsd_type == target_freebsd) 23378cfb07fSJuergen Lock env->regs[R_EAX] = do_freebsd_syscall(env, 23478cfb07fSJuergen Lock env->regs[R_EAX], 23578cfb07fSJuergen Lock env->regs[R_EDI], 23678cfb07fSJuergen Lock env->regs[R_ESI], 23778cfb07fSJuergen Lock env->regs[R_EDX], 23878cfb07fSJuergen Lock env->regs[R_ECX], 23978cfb07fSJuergen Lock env->regs[8], 24078cfb07fSJuergen Lock env->regs[9], 0, 0); 24178cfb07fSJuergen Lock else { //if (bsd_type == target_openbsd) 24231fc12dfSblueswir1 env->regs[R_EAX] = do_openbsd_syscall(env, 24331fc12dfSblueswir1 env->regs[R_EAX], 24431fc12dfSblueswir1 env->regs[R_EDI], 24531fc12dfSblueswir1 env->regs[R_ESI], 24631fc12dfSblueswir1 env->regs[R_EDX], 24731fc12dfSblueswir1 env->regs[10], 24831fc12dfSblueswir1 env->regs[8], 24931fc12dfSblueswir1 env->regs[9]); 25078cfb07fSJuergen Lock } 25131fc12dfSblueswir1 env->eip = env->exception_next_eip; 25278cfb07fSJuergen Lock if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { 25378cfb07fSJuergen Lock env->regs[R_EAX] = -env->regs[R_EAX]; 25478cfb07fSJuergen Lock env->eflags |= CC_C; 25578cfb07fSJuergen Lock } else { 25678cfb07fSJuergen Lock env->eflags &= ~CC_C; 25778cfb07fSJuergen Lock } 25831fc12dfSblueswir1 break; 25931fc12dfSblueswir1 #endif 26031fc12dfSblueswir1 #if 0 26131fc12dfSblueswir1 case EXCP0B_NOSEG: 26231fc12dfSblueswir1 case EXCP0C_STACK: 26331fc12dfSblueswir1 info.si_signo = SIGBUS; 26431fc12dfSblueswir1 info.si_errno = 0; 26531fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 26631fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 26731fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 26831fc12dfSblueswir1 break; 26931fc12dfSblueswir1 case EXCP0D_GPF: 27031fc12dfSblueswir1 /* XXX: potential problem if ABI32 */ 27131fc12dfSblueswir1 #ifndef TARGET_X86_64 27231fc12dfSblueswir1 if (env->eflags & VM_MASK) { 27331fc12dfSblueswir1 handle_vm86_fault(env); 27431fc12dfSblueswir1 } else 27531fc12dfSblueswir1 #endif 27631fc12dfSblueswir1 { 27731fc12dfSblueswir1 info.si_signo = SIGSEGV; 27831fc12dfSblueswir1 info.si_errno = 0; 27931fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 28031fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 28131fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 28231fc12dfSblueswir1 } 28331fc12dfSblueswir1 break; 28431fc12dfSblueswir1 case EXCP0E_PAGE: 28531fc12dfSblueswir1 info.si_signo = SIGSEGV; 28631fc12dfSblueswir1 info.si_errno = 0; 28731fc12dfSblueswir1 if (!(env->error_code & 1)) 28831fc12dfSblueswir1 info.si_code = TARGET_SEGV_MAPERR; 28931fc12dfSblueswir1 else 29031fc12dfSblueswir1 info.si_code = TARGET_SEGV_ACCERR; 29131fc12dfSblueswir1 info._sifields._sigfault._addr = env->cr[2]; 29231fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 29331fc12dfSblueswir1 break; 29431fc12dfSblueswir1 case EXCP00_DIVZ: 29531fc12dfSblueswir1 #ifndef TARGET_X86_64 29631fc12dfSblueswir1 if (env->eflags & VM_MASK) { 29731fc12dfSblueswir1 handle_vm86_trap(env, trapnr); 29831fc12dfSblueswir1 } else 29931fc12dfSblueswir1 #endif 30031fc12dfSblueswir1 { 30131fc12dfSblueswir1 /* division by zero */ 30231fc12dfSblueswir1 info.si_signo = SIGFPE; 30331fc12dfSblueswir1 info.si_errno = 0; 30431fc12dfSblueswir1 info.si_code = TARGET_FPE_INTDIV; 30531fc12dfSblueswir1 info._sifields._sigfault._addr = env->eip; 30631fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 30731fc12dfSblueswir1 } 30831fc12dfSblueswir1 break; 30931fc12dfSblueswir1 case EXCP01_DB: 31031fc12dfSblueswir1 case EXCP03_INT3: 31131fc12dfSblueswir1 #ifndef TARGET_X86_64 31231fc12dfSblueswir1 if (env->eflags & VM_MASK) { 31331fc12dfSblueswir1 handle_vm86_trap(env, trapnr); 31431fc12dfSblueswir1 } else 31531fc12dfSblueswir1 #endif 31631fc12dfSblueswir1 { 31731fc12dfSblueswir1 info.si_signo = SIGTRAP; 31831fc12dfSblueswir1 info.si_errno = 0; 31931fc12dfSblueswir1 if (trapnr == EXCP01_DB) { 32031fc12dfSblueswir1 info.si_code = TARGET_TRAP_BRKPT; 32131fc12dfSblueswir1 info._sifields._sigfault._addr = env->eip; 32231fc12dfSblueswir1 } else { 32331fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 32431fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 32531fc12dfSblueswir1 } 32631fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 32731fc12dfSblueswir1 } 32831fc12dfSblueswir1 break; 32931fc12dfSblueswir1 case EXCP04_INTO: 33031fc12dfSblueswir1 case EXCP05_BOUND: 33131fc12dfSblueswir1 #ifndef TARGET_X86_64 33231fc12dfSblueswir1 if (env->eflags & VM_MASK) { 33331fc12dfSblueswir1 handle_vm86_trap(env, trapnr); 33431fc12dfSblueswir1 } else 33531fc12dfSblueswir1 #endif 33631fc12dfSblueswir1 { 33731fc12dfSblueswir1 info.si_signo = SIGSEGV; 33831fc12dfSblueswir1 info.si_errno = 0; 33931fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 34031fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 34131fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 34231fc12dfSblueswir1 } 34331fc12dfSblueswir1 break; 34431fc12dfSblueswir1 case EXCP06_ILLOP: 34531fc12dfSblueswir1 info.si_signo = SIGILL; 34631fc12dfSblueswir1 info.si_errno = 0; 34731fc12dfSblueswir1 info.si_code = TARGET_ILL_ILLOPN; 34831fc12dfSblueswir1 info._sifields._sigfault._addr = env->eip; 34931fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 35031fc12dfSblueswir1 break; 35131fc12dfSblueswir1 #endif 35231fc12dfSblueswir1 case EXCP_INTERRUPT: 35331fc12dfSblueswir1 /* just indicate that signals should be handled asap */ 35431fc12dfSblueswir1 break; 35531fc12dfSblueswir1 #if 0 35631fc12dfSblueswir1 case EXCP_DEBUG: 35731fc12dfSblueswir1 { 35831fc12dfSblueswir1 int sig; 35931fc12dfSblueswir1 36031fc12dfSblueswir1 sig = gdb_handlesig (env, TARGET_SIGTRAP); 36131fc12dfSblueswir1 if (sig) 36231fc12dfSblueswir1 { 36331fc12dfSblueswir1 info.si_signo = sig; 36431fc12dfSblueswir1 info.si_errno = 0; 36531fc12dfSblueswir1 info.si_code = TARGET_TRAP_BRKPT; 36631fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 36731fc12dfSblueswir1 } 36831fc12dfSblueswir1 } 36931fc12dfSblueswir1 break; 37031fc12dfSblueswir1 #endif 37131fc12dfSblueswir1 default: 37231fc12dfSblueswir1 pc = env->segs[R_CS].base + env->eip; 37331fc12dfSblueswir1 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", 37431fc12dfSblueswir1 (long)pc, trapnr); 37531fc12dfSblueswir1 abort(); 37631fc12dfSblueswir1 } 37731fc12dfSblueswir1 process_pending_signals(env); 37831fc12dfSblueswir1 } 37931fc12dfSblueswir1 } 38031fc12dfSblueswir1 #endif 38131fc12dfSblueswir1 38284778508Sblueswir1 #ifdef TARGET_SPARC 38384778508Sblueswir1 #define SPARC64_STACK_BIAS 2047 38484778508Sblueswir1 38584778508Sblueswir1 //#define DEBUG_WIN 38684778508Sblueswir1 /* WARNING: dealing with register windows _is_ complicated. More info 38784778508Sblueswir1 can be found at http://www.sics.se/~psm/sparcstack.html */ 38884778508Sblueswir1 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) 38984778508Sblueswir1 { 39084778508Sblueswir1 index = (index + cwp * 16) % (16 * env->nwindows); 39184778508Sblueswir1 /* wrap handling : if cwp is on the last window, then we use the 39284778508Sblueswir1 registers 'after' the end */ 39384778508Sblueswir1 if (index < 8 && env->cwp == env->nwindows - 1) 39484778508Sblueswir1 index += 16 * env->nwindows; 39584778508Sblueswir1 return index; 39684778508Sblueswir1 } 39784778508Sblueswir1 39884778508Sblueswir1 /* save the register window 'cwp1' */ 39984778508Sblueswir1 static inline void save_window_offset(CPUSPARCState *env, int cwp1) 40084778508Sblueswir1 { 40184778508Sblueswir1 unsigned int i; 40284778508Sblueswir1 abi_ulong sp_ptr; 40384778508Sblueswir1 40484778508Sblueswir1 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; 40584778508Sblueswir1 #ifdef TARGET_SPARC64 40684778508Sblueswir1 if (sp_ptr & 3) 40784778508Sblueswir1 sp_ptr += SPARC64_STACK_BIAS; 40884778508Sblueswir1 #endif 40984778508Sblueswir1 #if defined(DEBUG_WIN) 41084778508Sblueswir1 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", 41184778508Sblueswir1 sp_ptr, cwp1); 41284778508Sblueswir1 #endif 41384778508Sblueswir1 for(i = 0; i < 16; i++) { 41484778508Sblueswir1 /* FIXME - what to do if put_user() fails? */ 41584778508Sblueswir1 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); 41684778508Sblueswir1 sp_ptr += sizeof(abi_ulong); 41784778508Sblueswir1 } 41884778508Sblueswir1 } 41984778508Sblueswir1 42084778508Sblueswir1 static void save_window(CPUSPARCState *env) 42184778508Sblueswir1 { 42284778508Sblueswir1 #ifndef TARGET_SPARC64 42384778508Sblueswir1 unsigned int new_wim; 42484778508Sblueswir1 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & 42584778508Sblueswir1 ((1LL << env->nwindows) - 1); 42684778508Sblueswir1 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); 42784778508Sblueswir1 env->wim = new_wim; 42884778508Sblueswir1 #else 42984778508Sblueswir1 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); 43084778508Sblueswir1 env->cansave++; 43184778508Sblueswir1 env->canrestore--; 43284778508Sblueswir1 #endif 43384778508Sblueswir1 } 43484778508Sblueswir1 43584778508Sblueswir1 static void restore_window(CPUSPARCState *env) 43684778508Sblueswir1 { 43784778508Sblueswir1 #ifndef TARGET_SPARC64 43884778508Sblueswir1 unsigned int new_wim; 43984778508Sblueswir1 #endif 44084778508Sblueswir1 unsigned int i, cwp1; 44184778508Sblueswir1 abi_ulong sp_ptr; 44284778508Sblueswir1 44384778508Sblueswir1 #ifndef TARGET_SPARC64 44484778508Sblueswir1 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & 44584778508Sblueswir1 ((1LL << env->nwindows) - 1); 44684778508Sblueswir1 #endif 44784778508Sblueswir1 44884778508Sblueswir1 /* restore the invalid window */ 44984778508Sblueswir1 cwp1 = cpu_cwp_inc(env, env->cwp + 1); 45084778508Sblueswir1 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; 45184778508Sblueswir1 #ifdef TARGET_SPARC64 45284778508Sblueswir1 if (sp_ptr & 3) 45384778508Sblueswir1 sp_ptr += SPARC64_STACK_BIAS; 45484778508Sblueswir1 #endif 45584778508Sblueswir1 #if defined(DEBUG_WIN) 45684778508Sblueswir1 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", 45784778508Sblueswir1 sp_ptr, cwp1); 45884778508Sblueswir1 #endif 45984778508Sblueswir1 for(i = 0; i < 16; i++) { 46084778508Sblueswir1 /* FIXME - what to do if get_user() fails? */ 46184778508Sblueswir1 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); 46284778508Sblueswir1 sp_ptr += sizeof(abi_ulong); 46384778508Sblueswir1 } 46484778508Sblueswir1 #ifdef TARGET_SPARC64 46584778508Sblueswir1 env->canrestore++; 46684778508Sblueswir1 if (env->cleanwin < env->nwindows - 1) 46784778508Sblueswir1 env->cleanwin++; 46884778508Sblueswir1 env->cansave--; 46984778508Sblueswir1 #else 47084778508Sblueswir1 env->wim = new_wim; 47184778508Sblueswir1 #endif 47284778508Sblueswir1 } 47384778508Sblueswir1 47484778508Sblueswir1 static void flush_windows(CPUSPARCState *env) 47584778508Sblueswir1 { 47684778508Sblueswir1 int offset, cwp1; 47784778508Sblueswir1 47884778508Sblueswir1 offset = 1; 47984778508Sblueswir1 for(;;) { 48084778508Sblueswir1 /* if restore would invoke restore_window(), then we can stop */ 48184778508Sblueswir1 cwp1 = cpu_cwp_inc(env, env->cwp + offset); 48284778508Sblueswir1 #ifndef TARGET_SPARC64 48384778508Sblueswir1 if (env->wim & (1 << cwp1)) 48484778508Sblueswir1 break; 48584778508Sblueswir1 #else 48684778508Sblueswir1 if (env->canrestore == 0) 48784778508Sblueswir1 break; 48884778508Sblueswir1 env->cansave++; 48984778508Sblueswir1 env->canrestore--; 49084778508Sblueswir1 #endif 49184778508Sblueswir1 save_window_offset(env, cwp1); 49284778508Sblueswir1 offset++; 49384778508Sblueswir1 } 49484778508Sblueswir1 cwp1 = cpu_cwp_inc(env, env->cwp + 1); 49584778508Sblueswir1 #ifndef TARGET_SPARC64 49684778508Sblueswir1 /* set wim so that restore will reload the registers */ 49784778508Sblueswir1 env->wim = 1 << cwp1; 49884778508Sblueswir1 #endif 49984778508Sblueswir1 #if defined(DEBUG_WIN) 50084778508Sblueswir1 printf("flush_windows: nb=%d\n", offset - 1); 50184778508Sblueswir1 #endif 50284778508Sblueswir1 } 50384778508Sblueswir1 50478cfb07fSJuergen Lock void cpu_loop(CPUSPARCState *env) 50584778508Sblueswir1 { 506878096eeSAndreas Färber CPUState *cs = CPU(sparc_env_get_cpu(env)); 50784778508Sblueswir1 int trapnr, ret, syscall_nr; 50884778508Sblueswir1 //target_siginfo_t info; 50984778508Sblueswir1 51084778508Sblueswir1 while (1) { 511ea3e9847SPeter Crosthwaite trapnr = cpu_sparc_exec(cs); 51284778508Sblueswir1 51384778508Sblueswir1 switch (trapnr) { 51477b9435fSblueswir1 #ifndef TARGET_SPARC64 51577b9435fSblueswir1 case 0x80: 51677b9435fSblueswir1 #else 51778cfb07fSJuergen Lock /* FreeBSD uses 0x141 for syscalls too */ 51878cfb07fSJuergen Lock case 0x141: 51978cfb07fSJuergen Lock if (bsd_type != target_freebsd) 52078cfb07fSJuergen Lock goto badtrap; 52184778508Sblueswir1 case 0x100: 52277b9435fSblueswir1 #endif 52384778508Sblueswir1 syscall_nr = env->gregs[1]; 52484778508Sblueswir1 if (bsd_type == target_freebsd) 52584778508Sblueswir1 ret = do_freebsd_syscall(env, syscall_nr, 52684778508Sblueswir1 env->regwptr[0], env->regwptr[1], 52784778508Sblueswir1 env->regwptr[2], env->regwptr[3], 52878cfb07fSJuergen Lock env->regwptr[4], env->regwptr[5], 0, 0); 52984778508Sblueswir1 else if (bsd_type == target_netbsd) 53084778508Sblueswir1 ret = do_netbsd_syscall(env, syscall_nr, 53184778508Sblueswir1 env->regwptr[0], env->regwptr[1], 53284778508Sblueswir1 env->regwptr[2], env->regwptr[3], 53384778508Sblueswir1 env->regwptr[4], env->regwptr[5]); 534cdba95bdSblueswir1 else { //if (bsd_type == target_openbsd) 535cdba95bdSblueswir1 #if defined(TARGET_SPARC64) 536cdba95bdSblueswir1 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | 537cdba95bdSblueswir1 TARGET_OPENBSD_SYSCALL_G2RFLAG); 538cdba95bdSblueswir1 #endif 53984778508Sblueswir1 ret = do_openbsd_syscall(env, syscall_nr, 54084778508Sblueswir1 env->regwptr[0], env->regwptr[1], 54184778508Sblueswir1 env->regwptr[2], env->regwptr[3], 54284778508Sblueswir1 env->regwptr[4], env->regwptr[5]); 543cdba95bdSblueswir1 } 54484778508Sblueswir1 if ((unsigned int)ret >= (unsigned int)(-515)) { 54578cfb07fSJuergen Lock ret = -ret; 54684778508Sblueswir1 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) 54784778508Sblueswir1 env->xcc |= PSR_CARRY; 54884778508Sblueswir1 #else 54984778508Sblueswir1 env->psr |= PSR_CARRY; 55084778508Sblueswir1 #endif 55184778508Sblueswir1 } else { 55284778508Sblueswir1 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) 55384778508Sblueswir1 env->xcc &= ~PSR_CARRY; 55484778508Sblueswir1 #else 55584778508Sblueswir1 env->psr &= ~PSR_CARRY; 55684778508Sblueswir1 #endif 55784778508Sblueswir1 } 55884778508Sblueswir1 env->regwptr[0] = ret; 55984778508Sblueswir1 /* next instruction */ 560cdba95bdSblueswir1 #if defined(TARGET_SPARC64) 561cdba95bdSblueswir1 if (bsd_type == target_openbsd && 562cdba95bdSblueswir1 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) { 56384778508Sblueswir1 env->pc = env->gregs[2]; 56484778508Sblueswir1 env->npc = env->pc + 4; 565cdba95bdSblueswir1 } else if (bsd_type == target_openbsd && 566cdba95bdSblueswir1 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) { 56784778508Sblueswir1 env->pc = env->gregs[7]; 56884778508Sblueswir1 env->npc = env->pc + 4; 56984778508Sblueswir1 } else { 57084778508Sblueswir1 env->pc = env->npc; 57184778508Sblueswir1 env->npc = env->npc + 4; 57284778508Sblueswir1 } 57384778508Sblueswir1 #else 57484778508Sblueswir1 env->pc = env->npc; 57584778508Sblueswir1 env->npc = env->npc + 4; 57684778508Sblueswir1 #endif 57784778508Sblueswir1 break; 57884778508Sblueswir1 case 0x83: /* flush windows */ 57984778508Sblueswir1 #ifdef TARGET_ABI32 58084778508Sblueswir1 case 0x103: 58184778508Sblueswir1 #endif 58284778508Sblueswir1 flush_windows(env); 58384778508Sblueswir1 /* next instruction */ 58484778508Sblueswir1 env->pc = env->npc; 58584778508Sblueswir1 env->npc = env->npc + 4; 58684778508Sblueswir1 break; 58784778508Sblueswir1 #ifndef TARGET_SPARC64 58884778508Sblueswir1 case TT_WIN_OVF: /* window overflow */ 58984778508Sblueswir1 save_window(env); 59084778508Sblueswir1 break; 59184778508Sblueswir1 case TT_WIN_UNF: /* window underflow */ 59284778508Sblueswir1 restore_window(env); 59384778508Sblueswir1 break; 59484778508Sblueswir1 case TT_TFAULT: 59584778508Sblueswir1 case TT_DFAULT: 59684778508Sblueswir1 #if 0 59784778508Sblueswir1 { 59884778508Sblueswir1 info.si_signo = SIGSEGV; 59984778508Sblueswir1 info.si_errno = 0; 60084778508Sblueswir1 /* XXX: check env->error_code */ 60184778508Sblueswir1 info.si_code = TARGET_SEGV_MAPERR; 60284778508Sblueswir1 info._sifields._sigfault._addr = env->mmuregs[4]; 60384778508Sblueswir1 queue_signal(env, info.si_signo, &info); 60484778508Sblueswir1 } 60584778508Sblueswir1 #endif 60684778508Sblueswir1 break; 60784778508Sblueswir1 #else 60884778508Sblueswir1 case TT_SPILL: /* window overflow */ 60984778508Sblueswir1 save_window(env); 61084778508Sblueswir1 break; 61184778508Sblueswir1 case TT_FILL: /* window underflow */ 61284778508Sblueswir1 restore_window(env); 61384778508Sblueswir1 break; 61484778508Sblueswir1 case TT_TFAULT: 61584778508Sblueswir1 case TT_DFAULT: 61684778508Sblueswir1 #if 0 61784778508Sblueswir1 { 61884778508Sblueswir1 info.si_signo = SIGSEGV; 61984778508Sblueswir1 info.si_errno = 0; 62084778508Sblueswir1 /* XXX: check env->error_code */ 62184778508Sblueswir1 info.si_code = TARGET_SEGV_MAPERR; 62284778508Sblueswir1 if (trapnr == TT_DFAULT) 62384778508Sblueswir1 info._sifields._sigfault._addr = env->dmmuregs[4]; 62484778508Sblueswir1 else 62584778508Sblueswir1 info._sifields._sigfault._addr = env->tsptr->tpc; 62684778508Sblueswir1 //queue_signal(env, info.si_signo, &info); 62784778508Sblueswir1 } 62884778508Sblueswir1 #endif 62984778508Sblueswir1 break; 63084778508Sblueswir1 #endif 63184778508Sblueswir1 case EXCP_INTERRUPT: 63284778508Sblueswir1 /* just indicate that signals should be handled asap */ 63384778508Sblueswir1 break; 63484778508Sblueswir1 case EXCP_DEBUG: 63584778508Sblueswir1 { 63684778508Sblueswir1 int sig; 63784778508Sblueswir1 638db6b81d4SAndreas Färber sig = gdb_handlesig(cs, TARGET_SIGTRAP); 63984778508Sblueswir1 #if 0 64084778508Sblueswir1 if (sig) 64184778508Sblueswir1 { 64284778508Sblueswir1 info.si_signo = sig; 64384778508Sblueswir1 info.si_errno = 0; 64484778508Sblueswir1 info.si_code = TARGET_TRAP_BRKPT; 64584778508Sblueswir1 //queue_signal(env, info.si_signo, &info); 64684778508Sblueswir1 } 64784778508Sblueswir1 #endif 64884778508Sblueswir1 } 64984778508Sblueswir1 break; 65084778508Sblueswir1 default: 65178cfb07fSJuergen Lock #ifdef TARGET_SPARC64 65278cfb07fSJuergen Lock badtrap: 65378cfb07fSJuergen Lock #endif 65484778508Sblueswir1 printf ("Unhandled trap: 0x%x\n", trapnr); 655878096eeSAndreas Färber cpu_dump_state(cs, stderr, fprintf, 0); 65684778508Sblueswir1 exit (1); 65784778508Sblueswir1 } 65884778508Sblueswir1 process_pending_signals (env); 65984778508Sblueswir1 } 66084778508Sblueswir1 } 66184778508Sblueswir1 66284778508Sblueswir1 #endif 66384778508Sblueswir1 66484778508Sblueswir1 static void usage(void) 66584778508Sblueswir1 { 6662e59915dSPaolo Bonzini printf("qemu-" TARGET_NAME " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" 6672e59915dSPaolo Bonzini "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n" 66884778508Sblueswir1 "BSD CPU emulator (compiled for %s emulation)\n" 66984778508Sblueswir1 "\n" 67084778508Sblueswir1 "Standard options:\n" 67184778508Sblueswir1 "-h print this help\n" 67284778508Sblueswir1 "-g port wait gdb connection to port\n" 67384778508Sblueswir1 "-L path set the elf interpreter prefix (default=%s)\n" 67484778508Sblueswir1 "-s size set the stack size in bytes (default=%ld)\n" 675c8057f95SPeter Maydell "-cpu model select CPU (-cpu help for list)\n" 67684778508Sblueswir1 "-drop-ld-preload drop LD_PRELOAD for target process\n" 677fc0d96b4SBlue Swirl "-E var=value sets/modifies targets environment variable(s)\n" 678fc0d96b4SBlue Swirl "-U var unsets targets environment variable(s)\n" 6792fa5d9baSBlue Swirl "-B address set guest_base address to address\n" 68084778508Sblueswir1 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" 68184778508Sblueswir1 "\n" 68284778508Sblueswir1 "Debug options:\n" 683989b697dSPeter Maydell "-d item1[,...] enable logging of specified items\n" 684989b697dSPeter Maydell " (use '-d help' for a list of log items)\n" 685989b697dSPeter Maydell "-D logfile write logs to 'logfile' (default stderr)\n" 68684778508Sblueswir1 "-p pagesize set the host page size to 'pagesize'\n" 6871b530a6dSaurel32 "-singlestep always run in singlestep mode\n" 68884778508Sblueswir1 "-strace log system calls\n" 68984778508Sblueswir1 "\n" 69084778508Sblueswir1 "Environment variables:\n" 69184778508Sblueswir1 "QEMU_STRACE Print system calls and arguments similar to the\n" 69284778508Sblueswir1 " 'strace' program. Enable by setting to any value.\n" 693fc0d96b4SBlue Swirl "You can use -E and -U options to set/unset environment variables\n" 694fc0d96b4SBlue Swirl "for target process. It is possible to provide several variables\n" 695fc0d96b4SBlue Swirl "by repeating the option. For example:\n" 696fc0d96b4SBlue Swirl " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" 697fc0d96b4SBlue Swirl "Note that if you provide several changes to single variable\n" 698fc0d96b4SBlue Swirl "last change will stay in effect.\n" 69984778508Sblueswir1 , 7002e59915dSPaolo Bonzini TARGET_NAME, 70184778508Sblueswir1 interp_prefix, 702989b697dSPeter Maydell x86_stack_size); 7032d18e637Sblueswir1 exit(1); 70484778508Sblueswir1 } 70584778508Sblueswir1 706dca1173cSAndreas Färber THREAD CPUState *thread_cpu; 70784778508Sblueswir1 70884778508Sblueswir1 /* Assumes contents are already zeroed. */ 70984778508Sblueswir1 void init_task_state(TaskState *ts) 71084778508Sblueswir1 { 71184778508Sblueswir1 int i; 71284778508Sblueswir1 71384778508Sblueswir1 ts->used = 1; 71484778508Sblueswir1 ts->first_free = ts->sigqueue_table; 71584778508Sblueswir1 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { 71684778508Sblueswir1 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; 71784778508Sblueswir1 } 71884778508Sblueswir1 ts->sigqueue_table[i].next = NULL; 71984778508Sblueswir1 } 72084778508Sblueswir1 72184778508Sblueswir1 int main(int argc, char **argv) 72284778508Sblueswir1 { 72384778508Sblueswir1 const char *filename; 72484778508Sblueswir1 const char *cpu_model; 725989b697dSPeter Maydell const char *log_file = NULL; 726c235d738SMatthew Fernandez const char *log_mask = NULL; 72784778508Sblueswir1 struct target_pt_regs regs1, *regs = ®s1; 72884778508Sblueswir1 struct image_info info1, *info = &info1; 72984778508Sblueswir1 TaskState ts1, *ts = &ts1; 7309349b4f9SAndreas Färber CPUArchState *env; 731db6b81d4SAndreas Färber CPUState *cpu; 73284778508Sblueswir1 int optind; 73384778508Sblueswir1 const char *r; 73484778508Sblueswir1 int gdbstub_port = 0; 735fc0d96b4SBlue Swirl char **target_environ, **wrk; 736fc0d96b4SBlue Swirl envlist_t *envlist = NULL; 73778cfb07fSJuergen Lock bsd_type = target_openbsd; 73884778508Sblueswir1 73984778508Sblueswir1 if (argc <= 1) 74084778508Sblueswir1 usage(); 74184778508Sblueswir1 742ce008c1fSAndreas Färber module_call_init(MODULE_INIT_QOM); 743ce008c1fSAndreas Färber 744fc0d96b4SBlue Swirl if ((envlist = envlist_create()) == NULL) { 745fc0d96b4SBlue Swirl (void) fprintf(stderr, "Unable to allocate envlist\n"); 746fc0d96b4SBlue Swirl exit(1); 747fc0d96b4SBlue Swirl } 748fc0d96b4SBlue Swirl 749fc0d96b4SBlue Swirl /* add current environment into the list */ 750fc0d96b4SBlue Swirl for (wrk = environ; *wrk != NULL; wrk++) { 751fc0d96b4SBlue Swirl (void) envlist_setenv(envlist, *wrk); 752fc0d96b4SBlue Swirl } 753fc0d96b4SBlue Swirl 75484778508Sblueswir1 cpu_model = NULL; 7550c62de2fSJuergen Lock #if defined(cpudef_setup) 7560c62de2fSJuergen Lock cpudef_setup(); /* parse cpu definitions in target config file (TBD) */ 7570c62de2fSJuergen Lock #endif 7580c62de2fSJuergen Lock 75984778508Sblueswir1 optind = 1; 76084778508Sblueswir1 for(;;) { 76184778508Sblueswir1 if (optind >= argc) 76284778508Sblueswir1 break; 76384778508Sblueswir1 r = argv[optind]; 76484778508Sblueswir1 if (r[0] != '-') 76584778508Sblueswir1 break; 76684778508Sblueswir1 optind++; 76784778508Sblueswir1 r++; 76884778508Sblueswir1 if (!strcmp(r, "-")) { 76984778508Sblueswir1 break; 77084778508Sblueswir1 } else if (!strcmp(r, "d")) { 771c235d738SMatthew Fernandez if (optind >= argc) { 77284778508Sblueswir1 break; 77384778508Sblueswir1 } 774c235d738SMatthew Fernandez log_mask = argv[optind++]; 775c235d738SMatthew Fernandez } else if (!strcmp(r, "D")) { 776c235d738SMatthew Fernandez if (optind >= argc) { 777c235d738SMatthew Fernandez break; 77884778508Sblueswir1 } 779c235d738SMatthew Fernandez log_file = argv[optind++]; 780fc0d96b4SBlue Swirl } else if (!strcmp(r, "E")) { 781fc0d96b4SBlue Swirl r = argv[optind++]; 782fc0d96b4SBlue Swirl if (envlist_setenv(envlist, r) != 0) 783fc0d96b4SBlue Swirl usage(); 784f66724c9SStefan Weil } else if (!strcmp(r, "ignore-environment")) { 785f66724c9SStefan Weil envlist_free(envlist); 786f66724c9SStefan Weil if ((envlist = envlist_create()) == NULL) { 787f66724c9SStefan Weil (void) fprintf(stderr, "Unable to allocate envlist\n"); 788f66724c9SStefan Weil exit(1); 789f66724c9SStefan Weil } 790fc0d96b4SBlue Swirl } else if (!strcmp(r, "U")) { 791fc0d96b4SBlue Swirl r = argv[optind++]; 792fc0d96b4SBlue Swirl if (envlist_unsetenv(envlist, r) != 0) 793fc0d96b4SBlue Swirl usage(); 79484778508Sblueswir1 } else if (!strcmp(r, "s")) { 79584778508Sblueswir1 r = argv[optind++]; 79684778508Sblueswir1 x86_stack_size = strtol(r, (char **)&r, 0); 79784778508Sblueswir1 if (x86_stack_size <= 0) 79884778508Sblueswir1 usage(); 79984778508Sblueswir1 if (*r == 'M') 80084778508Sblueswir1 x86_stack_size *= 1024 * 1024; 80184778508Sblueswir1 else if (*r == 'k' || *r == 'K') 80284778508Sblueswir1 x86_stack_size *= 1024; 80384778508Sblueswir1 } else if (!strcmp(r, "L")) { 80484778508Sblueswir1 interp_prefix = argv[optind++]; 80584778508Sblueswir1 } else if (!strcmp(r, "p")) { 80684778508Sblueswir1 qemu_host_page_size = atoi(argv[optind++]); 80784778508Sblueswir1 if (qemu_host_page_size == 0 || 80884778508Sblueswir1 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { 80984778508Sblueswir1 fprintf(stderr, "page size must be a power of two\n"); 81084778508Sblueswir1 exit(1); 81184778508Sblueswir1 } 81284778508Sblueswir1 } else if (!strcmp(r, "g")) { 81384778508Sblueswir1 gdbstub_port = atoi(argv[optind++]); 81484778508Sblueswir1 } else if (!strcmp(r, "r")) { 81584778508Sblueswir1 qemu_uname_release = argv[optind++]; 81684778508Sblueswir1 } else if (!strcmp(r, "cpu")) { 81784778508Sblueswir1 cpu_model = argv[optind++]; 818c8057f95SPeter Maydell if (is_help_option(cpu_model)) { 81984778508Sblueswir1 /* XXX: implement xxx_cpu_list for targets that still miss it */ 82084778508Sblueswir1 #if defined(cpu_list) 82184778508Sblueswir1 cpu_list(stdout, &fprintf); 82284778508Sblueswir1 #endif 8232d18e637Sblueswir1 exit(1); 82484778508Sblueswir1 } 8252fa5d9baSBlue Swirl } else if (!strcmp(r, "B")) { 8262fa5d9baSBlue Swirl guest_base = strtol(argv[optind++], NULL, 0); 8272fa5d9baSBlue Swirl have_guest_base = 1; 82884778508Sblueswir1 } else if (!strcmp(r, "drop-ld-preload")) { 829fc0d96b4SBlue Swirl (void) envlist_unsetenv(envlist, "LD_PRELOAD"); 83084778508Sblueswir1 } else if (!strcmp(r, "bsd")) { 83184778508Sblueswir1 if (!strcasecmp(argv[optind], "freebsd")) { 83284778508Sblueswir1 bsd_type = target_freebsd; 83384778508Sblueswir1 } else if (!strcasecmp(argv[optind], "netbsd")) { 83484778508Sblueswir1 bsd_type = target_netbsd; 83584778508Sblueswir1 } else if (!strcasecmp(argv[optind], "openbsd")) { 83684778508Sblueswir1 bsd_type = target_openbsd; 83784778508Sblueswir1 } else { 83884778508Sblueswir1 usage(); 83984778508Sblueswir1 } 84084778508Sblueswir1 optind++; 8411b530a6dSaurel32 } else if (!strcmp(r, "singlestep")) { 8421b530a6dSaurel32 singlestep = 1; 84384778508Sblueswir1 } else if (!strcmp(r, "strace")) { 84484778508Sblueswir1 do_strace = 1; 84584778508Sblueswir1 } else 84684778508Sblueswir1 { 84784778508Sblueswir1 usage(); 84884778508Sblueswir1 } 84984778508Sblueswir1 } 85084778508Sblueswir1 851c235d738SMatthew Fernandez /* init debug */ 852*f2937a33SPaolo Bonzini qemu_log_needs_buffers(); 8539a7e5424SPeter Maydell qemu_set_log_filename(log_file); 854c235d738SMatthew Fernandez if (log_mask) { 855c235d738SMatthew Fernandez int mask; 856c235d738SMatthew Fernandez 8574fde1ebaSPeter Maydell mask = qemu_str_to_log_mask(log_mask); 858c235d738SMatthew Fernandez if (!mask) { 85959a6fa6eSPeter Maydell qemu_print_log_usage(stdout); 860c235d738SMatthew Fernandez exit(1); 861c235d738SMatthew Fernandez } 86224537a01SPeter Maydell qemu_set_log(mask); 863c235d738SMatthew Fernandez } 864c235d738SMatthew Fernandez 8654b5dfd82SPeter Maydell if (optind >= argc) { 8664b5dfd82SPeter Maydell usage(); 8674b5dfd82SPeter Maydell } 8684b5dfd82SPeter Maydell filename = argv[optind]; 8694b5dfd82SPeter Maydell 87084778508Sblueswir1 /* Zero out regs */ 87184778508Sblueswir1 memset(regs, 0, sizeof(struct target_pt_regs)); 87284778508Sblueswir1 87384778508Sblueswir1 /* Zero out image_info */ 87484778508Sblueswir1 memset(info, 0, sizeof(struct image_info)); 87584778508Sblueswir1 87684778508Sblueswir1 /* Scan interp_prefix dir for replacement files. */ 87784778508Sblueswir1 init_paths(interp_prefix); 87884778508Sblueswir1 87984778508Sblueswir1 if (cpu_model == NULL) { 88031fc12dfSblueswir1 #if defined(TARGET_I386) 88131fc12dfSblueswir1 #ifdef TARGET_X86_64 88231fc12dfSblueswir1 cpu_model = "qemu64"; 88331fc12dfSblueswir1 #else 88431fc12dfSblueswir1 cpu_model = "qemu32"; 88531fc12dfSblueswir1 #endif 88631fc12dfSblueswir1 #elif defined(TARGET_SPARC) 88784778508Sblueswir1 #ifdef TARGET_SPARC64 88884778508Sblueswir1 cpu_model = "TI UltraSparc II"; 88984778508Sblueswir1 #else 89084778508Sblueswir1 cpu_model = "Fujitsu MB86904"; 89184778508Sblueswir1 #endif 89284778508Sblueswir1 #else 89384778508Sblueswir1 cpu_model = "any"; 89484778508Sblueswir1 #endif 89584778508Sblueswir1 } 896d5ab9713SJan Kiszka tcg_exec_init(0); 89784778508Sblueswir1 /* NOTE: we need to init the CPU at this stage to get 89884778508Sblueswir1 qemu_host_page_size */ 8992994fd96SEduardo Habkost cpu = cpu_init(cpu_model); 9002994fd96SEduardo Habkost if (!cpu) { 90184778508Sblueswir1 fprintf(stderr, "Unable to find CPU definition\n"); 90284778508Sblueswir1 exit(1); 90384778508Sblueswir1 } 9042994fd96SEduardo Habkost env = cpu->env_ptr; 90577868120SAndreas Färber #if defined(TARGET_SPARC) || defined(TARGET_PPC) 906db6b81d4SAndreas Färber cpu_reset(cpu); 907b55a37c9SBlue Swirl #endif 908db6b81d4SAndreas Färber thread_cpu = cpu; 90984778508Sblueswir1 91084778508Sblueswir1 if (getenv("QEMU_STRACE")) { 91184778508Sblueswir1 do_strace = 1; 91284778508Sblueswir1 } 91384778508Sblueswir1 914fc0d96b4SBlue Swirl target_environ = envlist_to_environ(envlist, NULL); 915fc0d96b4SBlue Swirl envlist_free(envlist); 91684778508Sblueswir1 9172fa5d9baSBlue Swirl /* 9182fa5d9baSBlue Swirl * Now that page sizes are configured in cpu_init() we can do 9192fa5d9baSBlue Swirl * proper page alignment for guest_base. 9202fa5d9baSBlue Swirl */ 9212fa5d9baSBlue Swirl guest_base = HOST_PAGE_ALIGN(guest_base); 9222fa5d9baSBlue Swirl 9232fa5d9baSBlue Swirl /* 9242fa5d9baSBlue Swirl * Read in mmap_min_addr kernel parameter. This value is used 9252fa5d9baSBlue Swirl * When loading the ELF image to determine whether guest_base 9262fa5d9baSBlue Swirl * is needed. 9272fa5d9baSBlue Swirl * 9282fa5d9baSBlue Swirl * When user has explicitly set the quest base, we skip this 9292fa5d9baSBlue Swirl * test. 9302fa5d9baSBlue Swirl */ 9312fa5d9baSBlue Swirl if (!have_guest_base) { 9322fa5d9baSBlue Swirl FILE *fp; 9332fa5d9baSBlue Swirl 9342fa5d9baSBlue Swirl if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { 9352fa5d9baSBlue Swirl unsigned long tmp; 9362fa5d9baSBlue Swirl if (fscanf(fp, "%lu", &tmp) == 1) { 9372fa5d9baSBlue Swirl mmap_min_addr = tmp; 93813829020SPaolo Bonzini qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr); 9392fa5d9baSBlue Swirl } 9402fa5d9baSBlue Swirl fclose(fp); 9412fa5d9baSBlue Swirl } 9422fa5d9baSBlue Swirl } 94384778508Sblueswir1 94484778508Sblueswir1 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { 94584778508Sblueswir1 printf("Error loading %s\n", filename); 94684778508Sblueswir1 _exit(1); 94784778508Sblueswir1 } 94884778508Sblueswir1 94984778508Sblueswir1 for (wrk = target_environ; *wrk; wrk++) { 95084778508Sblueswir1 free(*wrk); 95184778508Sblueswir1 } 95284778508Sblueswir1 95384778508Sblueswir1 free(target_environ); 95484778508Sblueswir1 95513829020SPaolo Bonzini if (qemu_loglevel_mask(CPU_LOG_PAGE)) { 9562fa5d9baSBlue Swirl qemu_log("guest_base 0x%lx\n", guest_base); 95793fcfe39Saliguori log_page_dump(); 95884778508Sblueswir1 95993fcfe39Saliguori qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); 96093fcfe39Saliguori qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); 96193fcfe39Saliguori qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", 96284778508Sblueswir1 info->start_code); 96393fcfe39Saliguori qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", 96484778508Sblueswir1 info->start_data); 96593fcfe39Saliguori qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); 96693fcfe39Saliguori qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", 96784778508Sblueswir1 info->start_stack); 96893fcfe39Saliguori qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); 96993fcfe39Saliguori qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); 9702e77eac6Sblueswir1 } 97184778508Sblueswir1 97284778508Sblueswir1 target_set_brk(info->brk); 97384778508Sblueswir1 syscall_init(); 97484778508Sblueswir1 signal_init(); 97584778508Sblueswir1 9769002ec79SRichard Henderson /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay 9779002ec79SRichard Henderson generating the prologue until now so that the prologue can take 9789002ec79SRichard Henderson the real value of GUEST_BASE into account. */ 9799002ec79SRichard Henderson tcg_prologue_init(&tcg_ctx); 9809002ec79SRichard Henderson 98184778508Sblueswir1 /* build Task State */ 98284778508Sblueswir1 memset(ts, 0, sizeof(TaskState)); 98384778508Sblueswir1 init_task_state(ts); 98484778508Sblueswir1 ts->info = info; 9850429a971SAndreas Färber cpu->opaque = ts; 98684778508Sblueswir1 98731fc12dfSblueswir1 #if defined(TARGET_I386) 98831fc12dfSblueswir1 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; 989b98dbc90SPaolo Bonzini env->hflags |= HF_PE_MASK | HF_CPL_MASK; 9900514ef2fSEduardo Habkost if (env->features[FEAT_1_EDX] & CPUID_SSE) { 99131fc12dfSblueswir1 env->cr[4] |= CR4_OSFXSR_MASK; 99231fc12dfSblueswir1 env->hflags |= HF_OSFXSR_MASK; 99331fc12dfSblueswir1 } 99431fc12dfSblueswir1 #ifndef TARGET_ABI32 99531fc12dfSblueswir1 /* enable 64 bit mode if possible */ 9960514ef2fSEduardo Habkost if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) { 99731fc12dfSblueswir1 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); 99831fc12dfSblueswir1 exit(1); 99931fc12dfSblueswir1 } 100031fc12dfSblueswir1 env->cr[4] |= CR4_PAE_MASK; 100131fc12dfSblueswir1 env->efer |= MSR_EFER_LMA | MSR_EFER_LME; 100231fc12dfSblueswir1 env->hflags |= HF_LMA_MASK; 100331fc12dfSblueswir1 #endif 100431fc12dfSblueswir1 100531fc12dfSblueswir1 /* flags setup : we activate the IRQs by default as in user mode */ 100631fc12dfSblueswir1 env->eflags |= IF_MASK; 100731fc12dfSblueswir1 100831fc12dfSblueswir1 /* linux register setup */ 100931fc12dfSblueswir1 #ifndef TARGET_ABI32 101031fc12dfSblueswir1 env->regs[R_EAX] = regs->rax; 101131fc12dfSblueswir1 env->regs[R_EBX] = regs->rbx; 101231fc12dfSblueswir1 env->regs[R_ECX] = regs->rcx; 101331fc12dfSblueswir1 env->regs[R_EDX] = regs->rdx; 101431fc12dfSblueswir1 env->regs[R_ESI] = regs->rsi; 101531fc12dfSblueswir1 env->regs[R_EDI] = regs->rdi; 101631fc12dfSblueswir1 env->regs[R_EBP] = regs->rbp; 101731fc12dfSblueswir1 env->regs[R_ESP] = regs->rsp; 101831fc12dfSblueswir1 env->eip = regs->rip; 101931fc12dfSblueswir1 #else 102031fc12dfSblueswir1 env->regs[R_EAX] = regs->eax; 102131fc12dfSblueswir1 env->regs[R_EBX] = regs->ebx; 102231fc12dfSblueswir1 env->regs[R_ECX] = regs->ecx; 102331fc12dfSblueswir1 env->regs[R_EDX] = regs->edx; 102431fc12dfSblueswir1 env->regs[R_ESI] = regs->esi; 102531fc12dfSblueswir1 env->regs[R_EDI] = regs->edi; 102631fc12dfSblueswir1 env->regs[R_EBP] = regs->ebp; 102731fc12dfSblueswir1 env->regs[R_ESP] = regs->esp; 102831fc12dfSblueswir1 env->eip = regs->eip; 102931fc12dfSblueswir1 #endif 103031fc12dfSblueswir1 103131fc12dfSblueswir1 /* linux interrupt setup */ 103231fc12dfSblueswir1 #ifndef TARGET_ABI32 103331fc12dfSblueswir1 env->idt.limit = 511; 103431fc12dfSblueswir1 #else 103531fc12dfSblueswir1 env->idt.limit = 255; 103631fc12dfSblueswir1 #endif 103731fc12dfSblueswir1 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), 103831fc12dfSblueswir1 PROT_READ|PROT_WRITE, 103931fc12dfSblueswir1 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 104031fc12dfSblueswir1 idt_table = g2h(env->idt.base); 104131fc12dfSblueswir1 set_idt(0, 0); 104231fc12dfSblueswir1 set_idt(1, 0); 104331fc12dfSblueswir1 set_idt(2, 0); 104431fc12dfSblueswir1 set_idt(3, 3); 104531fc12dfSblueswir1 set_idt(4, 3); 104631fc12dfSblueswir1 set_idt(5, 0); 104731fc12dfSblueswir1 set_idt(6, 0); 104831fc12dfSblueswir1 set_idt(7, 0); 104931fc12dfSblueswir1 set_idt(8, 0); 105031fc12dfSblueswir1 set_idt(9, 0); 105131fc12dfSblueswir1 set_idt(10, 0); 105231fc12dfSblueswir1 set_idt(11, 0); 105331fc12dfSblueswir1 set_idt(12, 0); 105431fc12dfSblueswir1 set_idt(13, 0); 105531fc12dfSblueswir1 set_idt(14, 0); 105631fc12dfSblueswir1 set_idt(15, 0); 105731fc12dfSblueswir1 set_idt(16, 0); 105831fc12dfSblueswir1 set_idt(17, 0); 105931fc12dfSblueswir1 set_idt(18, 0); 106031fc12dfSblueswir1 set_idt(19, 0); 106131fc12dfSblueswir1 set_idt(0x80, 3); 106231fc12dfSblueswir1 106331fc12dfSblueswir1 /* linux segment setup */ 106431fc12dfSblueswir1 { 106531fc12dfSblueswir1 uint64_t *gdt_table; 106631fc12dfSblueswir1 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, 106731fc12dfSblueswir1 PROT_READ|PROT_WRITE, 106831fc12dfSblueswir1 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 106931fc12dfSblueswir1 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; 107031fc12dfSblueswir1 gdt_table = g2h(env->gdt.base); 107131fc12dfSblueswir1 #ifdef TARGET_ABI32 107231fc12dfSblueswir1 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 107331fc12dfSblueswir1 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 107431fc12dfSblueswir1 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 107531fc12dfSblueswir1 #else 107631fc12dfSblueswir1 /* 64 bit code segment */ 107731fc12dfSblueswir1 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 107831fc12dfSblueswir1 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 107931fc12dfSblueswir1 DESC_L_MASK | 108031fc12dfSblueswir1 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 108131fc12dfSblueswir1 #endif 108231fc12dfSblueswir1 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, 108331fc12dfSblueswir1 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 108431fc12dfSblueswir1 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); 108531fc12dfSblueswir1 } 108631fc12dfSblueswir1 108731fc12dfSblueswir1 cpu_x86_load_seg(env, R_CS, __USER_CS); 108831fc12dfSblueswir1 cpu_x86_load_seg(env, R_SS, __USER_DS); 108931fc12dfSblueswir1 #ifdef TARGET_ABI32 109031fc12dfSblueswir1 cpu_x86_load_seg(env, R_DS, __USER_DS); 109131fc12dfSblueswir1 cpu_x86_load_seg(env, R_ES, __USER_DS); 109231fc12dfSblueswir1 cpu_x86_load_seg(env, R_FS, __USER_DS); 109331fc12dfSblueswir1 cpu_x86_load_seg(env, R_GS, __USER_DS); 109431fc12dfSblueswir1 /* This hack makes Wine work... */ 109531fc12dfSblueswir1 env->segs[R_FS].selector = 0; 109631fc12dfSblueswir1 #else 109731fc12dfSblueswir1 cpu_x86_load_seg(env, R_DS, 0); 109831fc12dfSblueswir1 cpu_x86_load_seg(env, R_ES, 0); 109931fc12dfSblueswir1 cpu_x86_load_seg(env, R_FS, 0); 110031fc12dfSblueswir1 cpu_x86_load_seg(env, R_GS, 0); 110131fc12dfSblueswir1 #endif 110231fc12dfSblueswir1 #elif defined(TARGET_SPARC) 110384778508Sblueswir1 { 110484778508Sblueswir1 int i; 110584778508Sblueswir1 env->pc = regs->pc; 110684778508Sblueswir1 env->npc = regs->npc; 110784778508Sblueswir1 env->y = regs->y; 110884778508Sblueswir1 for(i = 0; i < 8; i++) 110984778508Sblueswir1 env->gregs[i] = regs->u_regs[i]; 111084778508Sblueswir1 for(i = 0; i < 8; i++) 111184778508Sblueswir1 env->regwptr[i] = regs->u_regs[i + 8]; 111284778508Sblueswir1 } 111384778508Sblueswir1 #else 111484778508Sblueswir1 #error unsupported target CPU 111584778508Sblueswir1 #endif 111684778508Sblueswir1 111784778508Sblueswir1 if (gdbstub_port) { 111884778508Sblueswir1 gdbserver_start (gdbstub_port); 1119db6b81d4SAndreas Färber gdb_handlesig(cpu, 0); 112084778508Sblueswir1 } 112178cfb07fSJuergen Lock cpu_loop(env); 112284778508Sblueswir1 /* never exits */ 112384778508Sblueswir1 return 0; 112484778508Sblueswir1 } 1125