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 17*8167ee88SBlue Swirl * along with this program; if not, see <http://www.gnu.org/licenses/>. 1884778508Sblueswir1 */ 1984778508Sblueswir1 #include <stdlib.h> 2084778508Sblueswir1 #include <stdio.h> 2184778508Sblueswir1 #include <stdarg.h> 2284778508Sblueswir1 #include <string.h> 2384778508Sblueswir1 #include <errno.h> 2484778508Sblueswir1 #include <unistd.h> 2584778508Sblueswir1 #include <machine/trap.h> 2631fc12dfSblueswir1 #include <sys/types.h> 2731fc12dfSblueswir1 #include <sys/mman.h> 2884778508Sblueswir1 2984778508Sblueswir1 #include "qemu.h" 3084778508Sblueswir1 #include "qemu-common.h" 3184778508Sblueswir1 /* For tb_lock */ 3284778508Sblueswir1 #include "exec-all.h" 3384778508Sblueswir1 3484778508Sblueswir1 #define DEBUG_LOGFILE "/tmp/qemu.log" 3584778508Sblueswir1 361b530a6dSaurel32 int singlestep; 371b530a6dSaurel32 3884778508Sblueswir1 static const char *interp_prefix = CONFIG_QEMU_PREFIX; 3984778508Sblueswir1 const char *qemu_uname_release = CONFIG_UNAME_RELEASE; 4084778508Sblueswir1 extern char **environ; 4184778508Sblueswir1 4284778508Sblueswir1 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so 4384778508Sblueswir1 we allocate a bigger stack. Need a better solution, for example 4484778508Sblueswir1 by remapping the process stack directly at the right place */ 4584778508Sblueswir1 unsigned long x86_stack_size = 512 * 1024; 4684778508Sblueswir1 4784778508Sblueswir1 void gemu_log(const char *fmt, ...) 4884778508Sblueswir1 { 4984778508Sblueswir1 va_list ap; 5084778508Sblueswir1 5184778508Sblueswir1 va_start(ap, fmt); 5284778508Sblueswir1 vfprintf(stderr, fmt, ap); 5384778508Sblueswir1 va_end(ap); 5484778508Sblueswir1 } 559399f095Sblueswir1 5631fc12dfSblueswir1 #if defined(TARGET_I386) 5731fc12dfSblueswir1 int cpu_get_pic_interrupt(CPUState *env) 5831fc12dfSblueswir1 { 5931fc12dfSblueswir1 return -1; 6031fc12dfSblueswir1 } 6131fc12dfSblueswir1 #endif 6231fc12dfSblueswir1 639399f095Sblueswir1 /* These are no-ops because we are not threadsafe. */ 649399f095Sblueswir1 static inline void cpu_exec_start(CPUState *env) 659399f095Sblueswir1 { 669399f095Sblueswir1 } 679399f095Sblueswir1 689399f095Sblueswir1 static inline void cpu_exec_end(CPUState *env) 699399f095Sblueswir1 { 709399f095Sblueswir1 } 719399f095Sblueswir1 729399f095Sblueswir1 static inline void start_exclusive(void) 739399f095Sblueswir1 { 749399f095Sblueswir1 } 759399f095Sblueswir1 769399f095Sblueswir1 static inline void end_exclusive(void) 779399f095Sblueswir1 { 789399f095Sblueswir1 } 799399f095Sblueswir1 809399f095Sblueswir1 void fork_start(void) 819399f095Sblueswir1 { 829399f095Sblueswir1 } 839399f095Sblueswir1 849399f095Sblueswir1 void fork_end(int child) 859399f095Sblueswir1 { 869399f095Sblueswir1 if (child) { 879399f095Sblueswir1 gdbserver_fork(thread_env); 889399f095Sblueswir1 } 899399f095Sblueswir1 } 909399f095Sblueswir1 919399f095Sblueswir1 void cpu_list_lock(void) 929399f095Sblueswir1 { 939399f095Sblueswir1 } 949399f095Sblueswir1 959399f095Sblueswir1 void cpu_list_unlock(void) 969399f095Sblueswir1 { 979399f095Sblueswir1 } 989399f095Sblueswir1 9931fc12dfSblueswir1 #ifdef TARGET_I386 10031fc12dfSblueswir1 /***********************************************************/ 10131fc12dfSblueswir1 /* CPUX86 core interface */ 10231fc12dfSblueswir1 10331fc12dfSblueswir1 void cpu_smm_update(CPUState *env) 10431fc12dfSblueswir1 { 10531fc12dfSblueswir1 } 10631fc12dfSblueswir1 10731fc12dfSblueswir1 uint64_t cpu_get_tsc(CPUX86State *env) 10831fc12dfSblueswir1 { 10931fc12dfSblueswir1 return cpu_get_real_ticks(); 11031fc12dfSblueswir1 } 11131fc12dfSblueswir1 11231fc12dfSblueswir1 static void write_dt(void *ptr, unsigned long addr, unsigned long limit, 11331fc12dfSblueswir1 int flags) 11431fc12dfSblueswir1 { 11531fc12dfSblueswir1 unsigned int e1, e2; 11631fc12dfSblueswir1 uint32_t *p; 11731fc12dfSblueswir1 e1 = (addr << 16) | (limit & 0xffff); 11831fc12dfSblueswir1 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); 11931fc12dfSblueswir1 e2 |= flags; 12031fc12dfSblueswir1 p = ptr; 12131fc12dfSblueswir1 p[0] = tswap32(e1); 12231fc12dfSblueswir1 p[1] = tswap32(e2); 12331fc12dfSblueswir1 } 12431fc12dfSblueswir1 12531fc12dfSblueswir1 static uint64_t *idt_table; 12631fc12dfSblueswir1 #ifdef TARGET_X86_64 12731fc12dfSblueswir1 static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, 12831fc12dfSblueswir1 uint64_t addr, unsigned int sel) 12931fc12dfSblueswir1 { 13031fc12dfSblueswir1 uint32_t *p, e1, e2; 13131fc12dfSblueswir1 e1 = (addr & 0xffff) | (sel << 16); 13231fc12dfSblueswir1 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); 13331fc12dfSblueswir1 p = ptr; 13431fc12dfSblueswir1 p[0] = tswap32(e1); 13531fc12dfSblueswir1 p[1] = tswap32(e2); 13631fc12dfSblueswir1 p[2] = tswap32(addr >> 32); 13731fc12dfSblueswir1 p[3] = 0; 13831fc12dfSblueswir1 } 13931fc12dfSblueswir1 /* only dpl matters as we do only user space emulation */ 14031fc12dfSblueswir1 static void set_idt(int n, unsigned int dpl) 14131fc12dfSblueswir1 { 14231fc12dfSblueswir1 set_gate64(idt_table + n * 2, 0, dpl, 0, 0); 14331fc12dfSblueswir1 } 14431fc12dfSblueswir1 #else 14531fc12dfSblueswir1 static void set_gate(void *ptr, unsigned int type, unsigned int dpl, 14631fc12dfSblueswir1 uint32_t addr, unsigned int sel) 14731fc12dfSblueswir1 { 14831fc12dfSblueswir1 uint32_t *p, e1, e2; 14931fc12dfSblueswir1 e1 = (addr & 0xffff) | (sel << 16); 15031fc12dfSblueswir1 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); 15131fc12dfSblueswir1 p = ptr; 15231fc12dfSblueswir1 p[0] = tswap32(e1); 15331fc12dfSblueswir1 p[1] = tswap32(e2); 15431fc12dfSblueswir1 } 15531fc12dfSblueswir1 15631fc12dfSblueswir1 /* only dpl matters as we do only user space emulation */ 15731fc12dfSblueswir1 static void set_idt(int n, unsigned int dpl) 15831fc12dfSblueswir1 { 15931fc12dfSblueswir1 set_gate(idt_table + n, 0, dpl, 0, 0); 16031fc12dfSblueswir1 } 16131fc12dfSblueswir1 #endif 16231fc12dfSblueswir1 16331fc12dfSblueswir1 void cpu_loop(CPUX86State *env, enum BSDType bsd_type) 16431fc12dfSblueswir1 { 16531fc12dfSblueswir1 int trapnr; 16631fc12dfSblueswir1 abi_ulong pc; 16731fc12dfSblueswir1 //target_siginfo_t info; 16831fc12dfSblueswir1 16931fc12dfSblueswir1 for(;;) { 17031fc12dfSblueswir1 trapnr = cpu_x86_exec(env); 17131fc12dfSblueswir1 switch(trapnr) { 17231fc12dfSblueswir1 case 0x80: 17331fc12dfSblueswir1 /* syscall from int $0x80 */ 17431fc12dfSblueswir1 env->regs[R_EAX] = do_openbsd_syscall(env, 17531fc12dfSblueswir1 env->regs[R_EAX], 17631fc12dfSblueswir1 env->regs[R_EBX], 17731fc12dfSblueswir1 env->regs[R_ECX], 17831fc12dfSblueswir1 env->regs[R_EDX], 17931fc12dfSblueswir1 env->regs[R_ESI], 18031fc12dfSblueswir1 env->regs[R_EDI], 18131fc12dfSblueswir1 env->regs[R_EBP]); 18231fc12dfSblueswir1 break; 18331fc12dfSblueswir1 #ifndef TARGET_ABI32 18431fc12dfSblueswir1 case EXCP_SYSCALL: 18531fc12dfSblueswir1 /* linux syscall from syscall intruction */ 18631fc12dfSblueswir1 env->regs[R_EAX] = do_openbsd_syscall(env, 18731fc12dfSblueswir1 env->regs[R_EAX], 18831fc12dfSblueswir1 env->regs[R_EDI], 18931fc12dfSblueswir1 env->regs[R_ESI], 19031fc12dfSblueswir1 env->regs[R_EDX], 19131fc12dfSblueswir1 env->regs[10], 19231fc12dfSblueswir1 env->regs[8], 19331fc12dfSblueswir1 env->regs[9]); 19431fc12dfSblueswir1 env->eip = env->exception_next_eip; 19531fc12dfSblueswir1 break; 19631fc12dfSblueswir1 #endif 19731fc12dfSblueswir1 #if 0 19831fc12dfSblueswir1 case EXCP0B_NOSEG: 19931fc12dfSblueswir1 case EXCP0C_STACK: 20031fc12dfSblueswir1 info.si_signo = SIGBUS; 20131fc12dfSblueswir1 info.si_errno = 0; 20231fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 20331fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 20431fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 20531fc12dfSblueswir1 break; 20631fc12dfSblueswir1 case EXCP0D_GPF: 20731fc12dfSblueswir1 /* XXX: potential problem if ABI32 */ 20831fc12dfSblueswir1 #ifndef TARGET_X86_64 20931fc12dfSblueswir1 if (env->eflags & VM_MASK) { 21031fc12dfSblueswir1 handle_vm86_fault(env); 21131fc12dfSblueswir1 } else 21231fc12dfSblueswir1 #endif 21331fc12dfSblueswir1 { 21431fc12dfSblueswir1 info.si_signo = SIGSEGV; 21531fc12dfSblueswir1 info.si_errno = 0; 21631fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 21731fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 21831fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 21931fc12dfSblueswir1 } 22031fc12dfSblueswir1 break; 22131fc12dfSblueswir1 case EXCP0E_PAGE: 22231fc12dfSblueswir1 info.si_signo = SIGSEGV; 22331fc12dfSblueswir1 info.si_errno = 0; 22431fc12dfSblueswir1 if (!(env->error_code & 1)) 22531fc12dfSblueswir1 info.si_code = TARGET_SEGV_MAPERR; 22631fc12dfSblueswir1 else 22731fc12dfSblueswir1 info.si_code = TARGET_SEGV_ACCERR; 22831fc12dfSblueswir1 info._sifields._sigfault._addr = env->cr[2]; 22931fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 23031fc12dfSblueswir1 break; 23131fc12dfSblueswir1 case EXCP00_DIVZ: 23231fc12dfSblueswir1 #ifndef TARGET_X86_64 23331fc12dfSblueswir1 if (env->eflags & VM_MASK) { 23431fc12dfSblueswir1 handle_vm86_trap(env, trapnr); 23531fc12dfSblueswir1 } else 23631fc12dfSblueswir1 #endif 23731fc12dfSblueswir1 { 23831fc12dfSblueswir1 /* division by zero */ 23931fc12dfSblueswir1 info.si_signo = SIGFPE; 24031fc12dfSblueswir1 info.si_errno = 0; 24131fc12dfSblueswir1 info.si_code = TARGET_FPE_INTDIV; 24231fc12dfSblueswir1 info._sifields._sigfault._addr = env->eip; 24331fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 24431fc12dfSblueswir1 } 24531fc12dfSblueswir1 break; 24631fc12dfSblueswir1 case EXCP01_DB: 24731fc12dfSblueswir1 case EXCP03_INT3: 24831fc12dfSblueswir1 #ifndef TARGET_X86_64 24931fc12dfSblueswir1 if (env->eflags & VM_MASK) { 25031fc12dfSblueswir1 handle_vm86_trap(env, trapnr); 25131fc12dfSblueswir1 } else 25231fc12dfSblueswir1 #endif 25331fc12dfSblueswir1 { 25431fc12dfSblueswir1 info.si_signo = SIGTRAP; 25531fc12dfSblueswir1 info.si_errno = 0; 25631fc12dfSblueswir1 if (trapnr == EXCP01_DB) { 25731fc12dfSblueswir1 info.si_code = TARGET_TRAP_BRKPT; 25831fc12dfSblueswir1 info._sifields._sigfault._addr = env->eip; 25931fc12dfSblueswir1 } else { 26031fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 26131fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 26231fc12dfSblueswir1 } 26331fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 26431fc12dfSblueswir1 } 26531fc12dfSblueswir1 break; 26631fc12dfSblueswir1 case EXCP04_INTO: 26731fc12dfSblueswir1 case EXCP05_BOUND: 26831fc12dfSblueswir1 #ifndef TARGET_X86_64 26931fc12dfSblueswir1 if (env->eflags & VM_MASK) { 27031fc12dfSblueswir1 handle_vm86_trap(env, trapnr); 27131fc12dfSblueswir1 } else 27231fc12dfSblueswir1 #endif 27331fc12dfSblueswir1 { 27431fc12dfSblueswir1 info.si_signo = SIGSEGV; 27531fc12dfSblueswir1 info.si_errno = 0; 27631fc12dfSblueswir1 info.si_code = TARGET_SI_KERNEL; 27731fc12dfSblueswir1 info._sifields._sigfault._addr = 0; 27831fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 27931fc12dfSblueswir1 } 28031fc12dfSblueswir1 break; 28131fc12dfSblueswir1 case EXCP06_ILLOP: 28231fc12dfSblueswir1 info.si_signo = SIGILL; 28331fc12dfSblueswir1 info.si_errno = 0; 28431fc12dfSblueswir1 info.si_code = TARGET_ILL_ILLOPN; 28531fc12dfSblueswir1 info._sifields._sigfault._addr = env->eip; 28631fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 28731fc12dfSblueswir1 break; 28831fc12dfSblueswir1 #endif 28931fc12dfSblueswir1 case EXCP_INTERRUPT: 29031fc12dfSblueswir1 /* just indicate that signals should be handled asap */ 29131fc12dfSblueswir1 break; 29231fc12dfSblueswir1 #if 0 29331fc12dfSblueswir1 case EXCP_DEBUG: 29431fc12dfSblueswir1 { 29531fc12dfSblueswir1 int sig; 29631fc12dfSblueswir1 29731fc12dfSblueswir1 sig = gdb_handlesig (env, TARGET_SIGTRAP); 29831fc12dfSblueswir1 if (sig) 29931fc12dfSblueswir1 { 30031fc12dfSblueswir1 info.si_signo = sig; 30131fc12dfSblueswir1 info.si_errno = 0; 30231fc12dfSblueswir1 info.si_code = TARGET_TRAP_BRKPT; 30331fc12dfSblueswir1 queue_signal(env, info.si_signo, &info); 30431fc12dfSblueswir1 } 30531fc12dfSblueswir1 } 30631fc12dfSblueswir1 break; 30731fc12dfSblueswir1 #endif 30831fc12dfSblueswir1 default: 30931fc12dfSblueswir1 pc = env->segs[R_CS].base + env->eip; 31031fc12dfSblueswir1 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", 31131fc12dfSblueswir1 (long)pc, trapnr); 31231fc12dfSblueswir1 abort(); 31331fc12dfSblueswir1 } 31431fc12dfSblueswir1 process_pending_signals(env); 31531fc12dfSblueswir1 } 31631fc12dfSblueswir1 } 31731fc12dfSblueswir1 #endif 31831fc12dfSblueswir1 31984778508Sblueswir1 #ifdef TARGET_SPARC 32084778508Sblueswir1 #define SPARC64_STACK_BIAS 2047 32184778508Sblueswir1 32284778508Sblueswir1 //#define DEBUG_WIN 32384778508Sblueswir1 /* WARNING: dealing with register windows _is_ complicated. More info 32484778508Sblueswir1 can be found at http://www.sics.se/~psm/sparcstack.html */ 32584778508Sblueswir1 static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) 32684778508Sblueswir1 { 32784778508Sblueswir1 index = (index + cwp * 16) % (16 * env->nwindows); 32884778508Sblueswir1 /* wrap handling : if cwp is on the last window, then we use the 32984778508Sblueswir1 registers 'after' the end */ 33084778508Sblueswir1 if (index < 8 && env->cwp == env->nwindows - 1) 33184778508Sblueswir1 index += 16 * env->nwindows; 33284778508Sblueswir1 return index; 33384778508Sblueswir1 } 33484778508Sblueswir1 33584778508Sblueswir1 /* save the register window 'cwp1' */ 33684778508Sblueswir1 static inline void save_window_offset(CPUSPARCState *env, int cwp1) 33784778508Sblueswir1 { 33884778508Sblueswir1 unsigned int i; 33984778508Sblueswir1 abi_ulong sp_ptr; 34084778508Sblueswir1 34184778508Sblueswir1 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; 34284778508Sblueswir1 #ifdef TARGET_SPARC64 34384778508Sblueswir1 if (sp_ptr & 3) 34484778508Sblueswir1 sp_ptr += SPARC64_STACK_BIAS; 34584778508Sblueswir1 #endif 34684778508Sblueswir1 #if defined(DEBUG_WIN) 34784778508Sblueswir1 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", 34884778508Sblueswir1 sp_ptr, cwp1); 34984778508Sblueswir1 #endif 35084778508Sblueswir1 for(i = 0; i < 16; i++) { 35184778508Sblueswir1 /* FIXME - what to do if put_user() fails? */ 35284778508Sblueswir1 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); 35384778508Sblueswir1 sp_ptr += sizeof(abi_ulong); 35484778508Sblueswir1 } 35584778508Sblueswir1 } 35684778508Sblueswir1 35784778508Sblueswir1 static void save_window(CPUSPARCState *env) 35884778508Sblueswir1 { 35984778508Sblueswir1 #ifndef TARGET_SPARC64 36084778508Sblueswir1 unsigned int new_wim; 36184778508Sblueswir1 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & 36284778508Sblueswir1 ((1LL << env->nwindows) - 1); 36384778508Sblueswir1 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); 36484778508Sblueswir1 env->wim = new_wim; 36584778508Sblueswir1 #else 36684778508Sblueswir1 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); 36784778508Sblueswir1 env->cansave++; 36884778508Sblueswir1 env->canrestore--; 36984778508Sblueswir1 #endif 37084778508Sblueswir1 } 37184778508Sblueswir1 37284778508Sblueswir1 static void restore_window(CPUSPARCState *env) 37384778508Sblueswir1 { 37484778508Sblueswir1 #ifndef TARGET_SPARC64 37584778508Sblueswir1 unsigned int new_wim; 37684778508Sblueswir1 #endif 37784778508Sblueswir1 unsigned int i, cwp1; 37884778508Sblueswir1 abi_ulong sp_ptr; 37984778508Sblueswir1 38084778508Sblueswir1 #ifndef TARGET_SPARC64 38184778508Sblueswir1 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & 38284778508Sblueswir1 ((1LL << env->nwindows) - 1); 38384778508Sblueswir1 #endif 38484778508Sblueswir1 38584778508Sblueswir1 /* restore the invalid window */ 38684778508Sblueswir1 cwp1 = cpu_cwp_inc(env, env->cwp + 1); 38784778508Sblueswir1 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; 38884778508Sblueswir1 #ifdef TARGET_SPARC64 38984778508Sblueswir1 if (sp_ptr & 3) 39084778508Sblueswir1 sp_ptr += SPARC64_STACK_BIAS; 39184778508Sblueswir1 #endif 39284778508Sblueswir1 #if defined(DEBUG_WIN) 39384778508Sblueswir1 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", 39484778508Sblueswir1 sp_ptr, cwp1); 39584778508Sblueswir1 #endif 39684778508Sblueswir1 for(i = 0; i < 16; i++) { 39784778508Sblueswir1 /* FIXME - what to do if get_user() fails? */ 39884778508Sblueswir1 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); 39984778508Sblueswir1 sp_ptr += sizeof(abi_ulong); 40084778508Sblueswir1 } 40184778508Sblueswir1 #ifdef TARGET_SPARC64 40284778508Sblueswir1 env->canrestore++; 40384778508Sblueswir1 if (env->cleanwin < env->nwindows - 1) 40484778508Sblueswir1 env->cleanwin++; 40584778508Sblueswir1 env->cansave--; 40684778508Sblueswir1 #else 40784778508Sblueswir1 env->wim = new_wim; 40884778508Sblueswir1 #endif 40984778508Sblueswir1 } 41084778508Sblueswir1 41184778508Sblueswir1 static void flush_windows(CPUSPARCState *env) 41284778508Sblueswir1 { 41384778508Sblueswir1 int offset, cwp1; 41484778508Sblueswir1 41584778508Sblueswir1 offset = 1; 41684778508Sblueswir1 for(;;) { 41784778508Sblueswir1 /* if restore would invoke restore_window(), then we can stop */ 41884778508Sblueswir1 cwp1 = cpu_cwp_inc(env, env->cwp + offset); 41984778508Sblueswir1 #ifndef TARGET_SPARC64 42084778508Sblueswir1 if (env->wim & (1 << cwp1)) 42184778508Sblueswir1 break; 42284778508Sblueswir1 #else 42384778508Sblueswir1 if (env->canrestore == 0) 42484778508Sblueswir1 break; 42584778508Sblueswir1 env->cansave++; 42684778508Sblueswir1 env->canrestore--; 42784778508Sblueswir1 #endif 42884778508Sblueswir1 save_window_offset(env, cwp1); 42984778508Sblueswir1 offset++; 43084778508Sblueswir1 } 43184778508Sblueswir1 cwp1 = cpu_cwp_inc(env, env->cwp + 1); 43284778508Sblueswir1 #ifndef TARGET_SPARC64 43384778508Sblueswir1 /* set wim so that restore will reload the registers */ 43484778508Sblueswir1 env->wim = 1 << cwp1; 43584778508Sblueswir1 #endif 43684778508Sblueswir1 #if defined(DEBUG_WIN) 43784778508Sblueswir1 printf("flush_windows: nb=%d\n", offset - 1); 43884778508Sblueswir1 #endif 43984778508Sblueswir1 } 44084778508Sblueswir1 44184778508Sblueswir1 void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type) 44284778508Sblueswir1 { 44384778508Sblueswir1 int trapnr, ret, syscall_nr; 44484778508Sblueswir1 //target_siginfo_t info; 44584778508Sblueswir1 44684778508Sblueswir1 while (1) { 44784778508Sblueswir1 trapnr = cpu_sparc_exec (env); 44884778508Sblueswir1 44984778508Sblueswir1 switch (trapnr) { 45077b9435fSblueswir1 #ifndef TARGET_SPARC64 45177b9435fSblueswir1 case 0x80: 45277b9435fSblueswir1 #else 45384778508Sblueswir1 case 0x100: 45477b9435fSblueswir1 #endif 45584778508Sblueswir1 syscall_nr = env->gregs[1]; 45684778508Sblueswir1 if (bsd_type == target_freebsd) 45784778508Sblueswir1 ret = do_freebsd_syscall(env, syscall_nr, 45884778508Sblueswir1 env->regwptr[0], env->regwptr[1], 45984778508Sblueswir1 env->regwptr[2], env->regwptr[3], 46084778508Sblueswir1 env->regwptr[4], env->regwptr[5]); 46184778508Sblueswir1 else if (bsd_type == target_netbsd) 46284778508Sblueswir1 ret = do_netbsd_syscall(env, syscall_nr, 46384778508Sblueswir1 env->regwptr[0], env->regwptr[1], 46484778508Sblueswir1 env->regwptr[2], env->regwptr[3], 46584778508Sblueswir1 env->regwptr[4], env->regwptr[5]); 466cdba95bdSblueswir1 else { //if (bsd_type == target_openbsd) 467cdba95bdSblueswir1 #if defined(TARGET_SPARC64) 468cdba95bdSblueswir1 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | 469cdba95bdSblueswir1 TARGET_OPENBSD_SYSCALL_G2RFLAG); 470cdba95bdSblueswir1 #endif 47184778508Sblueswir1 ret = do_openbsd_syscall(env, syscall_nr, 47284778508Sblueswir1 env->regwptr[0], env->regwptr[1], 47384778508Sblueswir1 env->regwptr[2], env->regwptr[3], 47484778508Sblueswir1 env->regwptr[4], env->regwptr[5]); 475cdba95bdSblueswir1 } 47684778508Sblueswir1 if ((unsigned int)ret >= (unsigned int)(-515)) { 47784778508Sblueswir1 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) 47884778508Sblueswir1 env->xcc |= PSR_CARRY; 47984778508Sblueswir1 #else 48084778508Sblueswir1 env->psr |= PSR_CARRY; 48184778508Sblueswir1 #endif 48284778508Sblueswir1 } else { 48384778508Sblueswir1 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) 48484778508Sblueswir1 env->xcc &= ~PSR_CARRY; 48584778508Sblueswir1 #else 48684778508Sblueswir1 env->psr &= ~PSR_CARRY; 48784778508Sblueswir1 #endif 48884778508Sblueswir1 } 48984778508Sblueswir1 env->regwptr[0] = ret; 49084778508Sblueswir1 /* next instruction */ 491cdba95bdSblueswir1 #if defined(TARGET_SPARC64) 492cdba95bdSblueswir1 if (bsd_type == target_openbsd && 493cdba95bdSblueswir1 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) { 49484778508Sblueswir1 env->pc = env->gregs[2]; 49584778508Sblueswir1 env->npc = env->pc + 4; 496cdba95bdSblueswir1 } else if (bsd_type == target_openbsd && 497cdba95bdSblueswir1 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) { 49884778508Sblueswir1 env->pc = env->gregs[7]; 49984778508Sblueswir1 env->npc = env->pc + 4; 50084778508Sblueswir1 } else { 50184778508Sblueswir1 env->pc = env->npc; 50284778508Sblueswir1 env->npc = env->npc + 4; 50384778508Sblueswir1 } 50484778508Sblueswir1 #else 50584778508Sblueswir1 env->pc = env->npc; 50684778508Sblueswir1 env->npc = env->npc + 4; 50784778508Sblueswir1 #endif 50884778508Sblueswir1 break; 50984778508Sblueswir1 case 0x83: /* flush windows */ 51084778508Sblueswir1 #ifdef TARGET_ABI32 51184778508Sblueswir1 case 0x103: 51284778508Sblueswir1 #endif 51384778508Sblueswir1 flush_windows(env); 51484778508Sblueswir1 /* next instruction */ 51584778508Sblueswir1 env->pc = env->npc; 51684778508Sblueswir1 env->npc = env->npc + 4; 51784778508Sblueswir1 break; 51884778508Sblueswir1 #ifndef TARGET_SPARC64 51984778508Sblueswir1 case TT_WIN_OVF: /* window overflow */ 52084778508Sblueswir1 save_window(env); 52184778508Sblueswir1 break; 52284778508Sblueswir1 case TT_WIN_UNF: /* window underflow */ 52384778508Sblueswir1 restore_window(env); 52484778508Sblueswir1 break; 52584778508Sblueswir1 case TT_TFAULT: 52684778508Sblueswir1 case TT_DFAULT: 52784778508Sblueswir1 #if 0 52884778508Sblueswir1 { 52984778508Sblueswir1 info.si_signo = SIGSEGV; 53084778508Sblueswir1 info.si_errno = 0; 53184778508Sblueswir1 /* XXX: check env->error_code */ 53284778508Sblueswir1 info.si_code = TARGET_SEGV_MAPERR; 53384778508Sblueswir1 info._sifields._sigfault._addr = env->mmuregs[4]; 53484778508Sblueswir1 queue_signal(env, info.si_signo, &info); 53584778508Sblueswir1 } 53684778508Sblueswir1 #endif 53784778508Sblueswir1 break; 53884778508Sblueswir1 #else 53984778508Sblueswir1 case TT_SPILL: /* window overflow */ 54084778508Sblueswir1 save_window(env); 54184778508Sblueswir1 break; 54284778508Sblueswir1 case TT_FILL: /* window underflow */ 54384778508Sblueswir1 restore_window(env); 54484778508Sblueswir1 break; 54584778508Sblueswir1 case TT_TFAULT: 54684778508Sblueswir1 case TT_DFAULT: 54784778508Sblueswir1 #if 0 54884778508Sblueswir1 { 54984778508Sblueswir1 info.si_signo = SIGSEGV; 55084778508Sblueswir1 info.si_errno = 0; 55184778508Sblueswir1 /* XXX: check env->error_code */ 55284778508Sblueswir1 info.si_code = TARGET_SEGV_MAPERR; 55384778508Sblueswir1 if (trapnr == TT_DFAULT) 55484778508Sblueswir1 info._sifields._sigfault._addr = env->dmmuregs[4]; 55584778508Sblueswir1 else 55684778508Sblueswir1 info._sifields._sigfault._addr = env->tsptr->tpc; 55784778508Sblueswir1 //queue_signal(env, info.si_signo, &info); 55884778508Sblueswir1 } 55984778508Sblueswir1 #endif 56084778508Sblueswir1 break; 56184778508Sblueswir1 #endif 56284778508Sblueswir1 case EXCP_INTERRUPT: 56384778508Sblueswir1 /* just indicate that signals should be handled asap */ 56484778508Sblueswir1 break; 56584778508Sblueswir1 case EXCP_DEBUG: 56684778508Sblueswir1 { 56784778508Sblueswir1 int sig; 56884778508Sblueswir1 56984778508Sblueswir1 sig = gdb_handlesig (env, TARGET_SIGTRAP); 57084778508Sblueswir1 #if 0 57184778508Sblueswir1 if (sig) 57284778508Sblueswir1 { 57384778508Sblueswir1 info.si_signo = sig; 57484778508Sblueswir1 info.si_errno = 0; 57584778508Sblueswir1 info.si_code = TARGET_TRAP_BRKPT; 57684778508Sblueswir1 //queue_signal(env, info.si_signo, &info); 57784778508Sblueswir1 } 57884778508Sblueswir1 #endif 57984778508Sblueswir1 } 58084778508Sblueswir1 break; 58184778508Sblueswir1 default: 58284778508Sblueswir1 printf ("Unhandled trap: 0x%x\n", trapnr); 58384778508Sblueswir1 cpu_dump_state(env, stderr, fprintf, 0); 58484778508Sblueswir1 exit (1); 58584778508Sblueswir1 } 58684778508Sblueswir1 process_pending_signals (env); 58784778508Sblueswir1 } 58884778508Sblueswir1 } 58984778508Sblueswir1 59084778508Sblueswir1 #endif 59184778508Sblueswir1 59284778508Sblueswir1 static void usage(void) 59384778508Sblueswir1 { 59484778508Sblueswir1 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" 59584778508Sblueswir1 "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n" 59684778508Sblueswir1 "BSD CPU emulator (compiled for %s emulation)\n" 59784778508Sblueswir1 "\n" 59884778508Sblueswir1 "Standard options:\n" 59984778508Sblueswir1 "-h print this help\n" 60084778508Sblueswir1 "-g port wait gdb connection to port\n" 60184778508Sblueswir1 "-L path set the elf interpreter prefix (default=%s)\n" 60284778508Sblueswir1 "-s size set the stack size in bytes (default=%ld)\n" 60384778508Sblueswir1 "-cpu model select CPU (-cpu ? for list)\n" 60484778508Sblueswir1 "-drop-ld-preload drop LD_PRELOAD for target process\n" 60584778508Sblueswir1 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" 60684778508Sblueswir1 "\n" 60784778508Sblueswir1 "Debug options:\n" 60884778508Sblueswir1 "-d options activate log (logfile=%s)\n" 60984778508Sblueswir1 "-p pagesize set the host page size to 'pagesize'\n" 6101b530a6dSaurel32 "-singlestep always run in singlestep mode\n" 61184778508Sblueswir1 "-strace log system calls\n" 61284778508Sblueswir1 "\n" 61384778508Sblueswir1 "Environment variables:\n" 61484778508Sblueswir1 "QEMU_STRACE Print system calls and arguments similar to the\n" 61584778508Sblueswir1 " 'strace' program. Enable by setting to any value.\n" 61684778508Sblueswir1 , 61784778508Sblueswir1 TARGET_ARCH, 61884778508Sblueswir1 interp_prefix, 61984778508Sblueswir1 x86_stack_size, 62084778508Sblueswir1 DEBUG_LOGFILE); 6212d18e637Sblueswir1 exit(1); 62284778508Sblueswir1 } 62384778508Sblueswir1 62484778508Sblueswir1 THREAD CPUState *thread_env; 62584778508Sblueswir1 62684778508Sblueswir1 /* Assumes contents are already zeroed. */ 62784778508Sblueswir1 void init_task_state(TaskState *ts) 62884778508Sblueswir1 { 62984778508Sblueswir1 int i; 63084778508Sblueswir1 63184778508Sblueswir1 ts->used = 1; 63284778508Sblueswir1 ts->first_free = ts->sigqueue_table; 63384778508Sblueswir1 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { 63484778508Sblueswir1 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; 63584778508Sblueswir1 } 63684778508Sblueswir1 ts->sigqueue_table[i].next = NULL; 63784778508Sblueswir1 } 63884778508Sblueswir1 63984778508Sblueswir1 int main(int argc, char **argv) 64084778508Sblueswir1 { 64184778508Sblueswir1 const char *filename; 64284778508Sblueswir1 const char *cpu_model; 64384778508Sblueswir1 struct target_pt_regs regs1, *regs = ®s1; 64484778508Sblueswir1 struct image_info info1, *info = &info1; 64584778508Sblueswir1 TaskState ts1, *ts = &ts1; 64684778508Sblueswir1 CPUState *env; 64784778508Sblueswir1 int optind; 64884778508Sblueswir1 const char *r; 64984778508Sblueswir1 int gdbstub_port = 0; 65084778508Sblueswir1 int drop_ld_preload = 0, environ_count = 0; 65184778508Sblueswir1 char **target_environ, **wrk, **dst; 65284778508Sblueswir1 enum BSDType bsd_type = target_openbsd; 65384778508Sblueswir1 65484778508Sblueswir1 if (argc <= 1) 65584778508Sblueswir1 usage(); 65684778508Sblueswir1 65784778508Sblueswir1 /* init debug */ 65884778508Sblueswir1 cpu_set_log_filename(DEBUG_LOGFILE); 65984778508Sblueswir1 66084778508Sblueswir1 cpu_model = NULL; 66184778508Sblueswir1 optind = 1; 66284778508Sblueswir1 for(;;) { 66384778508Sblueswir1 if (optind >= argc) 66484778508Sblueswir1 break; 66584778508Sblueswir1 r = argv[optind]; 66684778508Sblueswir1 if (r[0] != '-') 66784778508Sblueswir1 break; 66884778508Sblueswir1 optind++; 66984778508Sblueswir1 r++; 67084778508Sblueswir1 if (!strcmp(r, "-")) { 67184778508Sblueswir1 break; 67284778508Sblueswir1 } else if (!strcmp(r, "d")) { 67384778508Sblueswir1 int mask; 67484778508Sblueswir1 const CPULogItem *item; 67584778508Sblueswir1 67684778508Sblueswir1 if (optind >= argc) 67784778508Sblueswir1 break; 67884778508Sblueswir1 67984778508Sblueswir1 r = argv[optind++]; 68084778508Sblueswir1 mask = cpu_str_to_log_mask(r); 68184778508Sblueswir1 if (!mask) { 68284778508Sblueswir1 printf("Log items (comma separated):\n"); 68384778508Sblueswir1 for(item = cpu_log_items; item->mask != 0; item++) { 68484778508Sblueswir1 printf("%-10s %s\n", item->name, item->help); 68584778508Sblueswir1 } 68684778508Sblueswir1 exit(1); 68784778508Sblueswir1 } 68884778508Sblueswir1 cpu_set_log(mask); 68984778508Sblueswir1 } else if (!strcmp(r, "s")) { 69084778508Sblueswir1 r = argv[optind++]; 69184778508Sblueswir1 x86_stack_size = strtol(r, (char **)&r, 0); 69284778508Sblueswir1 if (x86_stack_size <= 0) 69384778508Sblueswir1 usage(); 69484778508Sblueswir1 if (*r == 'M') 69584778508Sblueswir1 x86_stack_size *= 1024 * 1024; 69684778508Sblueswir1 else if (*r == 'k' || *r == 'K') 69784778508Sblueswir1 x86_stack_size *= 1024; 69884778508Sblueswir1 } else if (!strcmp(r, "L")) { 69984778508Sblueswir1 interp_prefix = argv[optind++]; 70084778508Sblueswir1 } else if (!strcmp(r, "p")) { 70184778508Sblueswir1 qemu_host_page_size = atoi(argv[optind++]); 70284778508Sblueswir1 if (qemu_host_page_size == 0 || 70384778508Sblueswir1 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { 70484778508Sblueswir1 fprintf(stderr, "page size must be a power of two\n"); 70584778508Sblueswir1 exit(1); 70684778508Sblueswir1 } 70784778508Sblueswir1 } else if (!strcmp(r, "g")) { 70884778508Sblueswir1 gdbstub_port = atoi(argv[optind++]); 70984778508Sblueswir1 } else if (!strcmp(r, "r")) { 71084778508Sblueswir1 qemu_uname_release = argv[optind++]; 71184778508Sblueswir1 } else if (!strcmp(r, "cpu")) { 71284778508Sblueswir1 cpu_model = argv[optind++]; 71384778508Sblueswir1 if (strcmp(cpu_model, "?") == 0) { 71484778508Sblueswir1 /* XXX: implement xxx_cpu_list for targets that still miss it */ 71584778508Sblueswir1 #if defined(cpu_list) 71684778508Sblueswir1 cpu_list(stdout, &fprintf); 71784778508Sblueswir1 #endif 7182d18e637Sblueswir1 exit(1); 71984778508Sblueswir1 } 72084778508Sblueswir1 } else if (!strcmp(r, "drop-ld-preload")) { 72184778508Sblueswir1 drop_ld_preload = 1; 72284778508Sblueswir1 } else if (!strcmp(r, "bsd")) { 72384778508Sblueswir1 if (!strcasecmp(argv[optind], "freebsd")) { 72484778508Sblueswir1 bsd_type = target_freebsd; 72584778508Sblueswir1 } else if (!strcasecmp(argv[optind], "netbsd")) { 72684778508Sblueswir1 bsd_type = target_netbsd; 72784778508Sblueswir1 } else if (!strcasecmp(argv[optind], "openbsd")) { 72884778508Sblueswir1 bsd_type = target_openbsd; 72984778508Sblueswir1 } else { 73084778508Sblueswir1 usage(); 73184778508Sblueswir1 } 73284778508Sblueswir1 optind++; 7331b530a6dSaurel32 } else if (!strcmp(r, "singlestep")) { 7341b530a6dSaurel32 singlestep = 1; 73584778508Sblueswir1 } else if (!strcmp(r, "strace")) { 73684778508Sblueswir1 do_strace = 1; 73784778508Sblueswir1 } else 73884778508Sblueswir1 { 73984778508Sblueswir1 usage(); 74084778508Sblueswir1 } 74184778508Sblueswir1 } 74284778508Sblueswir1 if (optind >= argc) 74384778508Sblueswir1 usage(); 74484778508Sblueswir1 filename = argv[optind]; 74584778508Sblueswir1 74684778508Sblueswir1 /* Zero out regs */ 74784778508Sblueswir1 memset(regs, 0, sizeof(struct target_pt_regs)); 74884778508Sblueswir1 74984778508Sblueswir1 /* Zero out image_info */ 75084778508Sblueswir1 memset(info, 0, sizeof(struct image_info)); 75184778508Sblueswir1 75284778508Sblueswir1 /* Scan interp_prefix dir for replacement files. */ 75384778508Sblueswir1 init_paths(interp_prefix); 75484778508Sblueswir1 75584778508Sblueswir1 if (cpu_model == NULL) { 75631fc12dfSblueswir1 #if defined(TARGET_I386) 75731fc12dfSblueswir1 #ifdef TARGET_X86_64 75831fc12dfSblueswir1 cpu_model = "qemu64"; 75931fc12dfSblueswir1 #else 76031fc12dfSblueswir1 cpu_model = "qemu32"; 76131fc12dfSblueswir1 #endif 76231fc12dfSblueswir1 #elif defined(TARGET_SPARC) 76384778508Sblueswir1 #ifdef TARGET_SPARC64 76484778508Sblueswir1 cpu_model = "TI UltraSparc II"; 76584778508Sblueswir1 #else 76684778508Sblueswir1 cpu_model = "Fujitsu MB86904"; 76784778508Sblueswir1 #endif 76884778508Sblueswir1 #else 76984778508Sblueswir1 cpu_model = "any"; 77084778508Sblueswir1 #endif 77184778508Sblueswir1 } 77284778508Sblueswir1 cpu_exec_init_all(0); 77384778508Sblueswir1 /* NOTE: we need to init the CPU at this stage to get 77484778508Sblueswir1 qemu_host_page_size */ 77584778508Sblueswir1 env = cpu_init(cpu_model); 77684778508Sblueswir1 if (!env) { 77784778508Sblueswir1 fprintf(stderr, "Unable to find CPU definition\n"); 77884778508Sblueswir1 exit(1); 77984778508Sblueswir1 } 78084778508Sblueswir1 thread_env = env; 78184778508Sblueswir1 78284778508Sblueswir1 if (getenv("QEMU_STRACE")) { 78384778508Sblueswir1 do_strace = 1; 78484778508Sblueswir1 } 78584778508Sblueswir1 78684778508Sblueswir1 wrk = environ; 78784778508Sblueswir1 while (*(wrk++)) 78884778508Sblueswir1 environ_count++; 78984778508Sblueswir1 79084778508Sblueswir1 target_environ = malloc((environ_count + 1) * sizeof(char *)); 79184778508Sblueswir1 if (!target_environ) 79284778508Sblueswir1 abort(); 79384778508Sblueswir1 for (wrk = environ, dst = target_environ; *wrk; wrk++) { 79484778508Sblueswir1 if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11)) 79584778508Sblueswir1 continue; 79684778508Sblueswir1 *(dst++) = strdup(*wrk); 79784778508Sblueswir1 } 79884778508Sblueswir1 *dst = NULL; /* NULL terminate target_environ */ 79984778508Sblueswir1 80084778508Sblueswir1 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { 80184778508Sblueswir1 printf("Error loading %s\n", filename); 80284778508Sblueswir1 _exit(1); 80384778508Sblueswir1 } 80484778508Sblueswir1 80584778508Sblueswir1 for (wrk = target_environ; *wrk; wrk++) { 80684778508Sblueswir1 free(*wrk); 80784778508Sblueswir1 } 80884778508Sblueswir1 80984778508Sblueswir1 free(target_environ); 81084778508Sblueswir1 8112e77eac6Sblueswir1 if (qemu_log_enabled()) { 81293fcfe39Saliguori log_page_dump(); 81384778508Sblueswir1 81493fcfe39Saliguori qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); 81593fcfe39Saliguori qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); 81693fcfe39Saliguori qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", 81784778508Sblueswir1 info->start_code); 81893fcfe39Saliguori qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", 81984778508Sblueswir1 info->start_data); 82093fcfe39Saliguori qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); 82193fcfe39Saliguori qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", 82284778508Sblueswir1 info->start_stack); 82393fcfe39Saliguori qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); 82493fcfe39Saliguori qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); 8252e77eac6Sblueswir1 } 82684778508Sblueswir1 82784778508Sblueswir1 target_set_brk(info->brk); 82884778508Sblueswir1 syscall_init(); 82984778508Sblueswir1 signal_init(); 83084778508Sblueswir1 83184778508Sblueswir1 /* build Task State */ 83284778508Sblueswir1 memset(ts, 0, sizeof(TaskState)); 83384778508Sblueswir1 init_task_state(ts); 83484778508Sblueswir1 ts->info = info; 83584778508Sblueswir1 env->opaque = ts; 83684778508Sblueswir1 83731fc12dfSblueswir1 #if defined(TARGET_I386) 83831fc12dfSblueswir1 cpu_x86_set_cpl(env, 3); 83931fc12dfSblueswir1 84031fc12dfSblueswir1 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; 84131fc12dfSblueswir1 env->hflags |= HF_PE_MASK; 84231fc12dfSblueswir1 if (env->cpuid_features & CPUID_SSE) { 84331fc12dfSblueswir1 env->cr[4] |= CR4_OSFXSR_MASK; 84431fc12dfSblueswir1 env->hflags |= HF_OSFXSR_MASK; 84531fc12dfSblueswir1 } 84631fc12dfSblueswir1 #ifndef TARGET_ABI32 84731fc12dfSblueswir1 /* enable 64 bit mode if possible */ 84831fc12dfSblueswir1 if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) { 84931fc12dfSblueswir1 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); 85031fc12dfSblueswir1 exit(1); 85131fc12dfSblueswir1 } 85231fc12dfSblueswir1 env->cr[4] |= CR4_PAE_MASK; 85331fc12dfSblueswir1 env->efer |= MSR_EFER_LMA | MSR_EFER_LME; 85431fc12dfSblueswir1 env->hflags |= HF_LMA_MASK; 85531fc12dfSblueswir1 #endif 85631fc12dfSblueswir1 85731fc12dfSblueswir1 /* flags setup : we activate the IRQs by default as in user mode */ 85831fc12dfSblueswir1 env->eflags |= IF_MASK; 85931fc12dfSblueswir1 86031fc12dfSblueswir1 /* linux register setup */ 86131fc12dfSblueswir1 #ifndef TARGET_ABI32 86231fc12dfSblueswir1 env->regs[R_EAX] = regs->rax; 86331fc12dfSblueswir1 env->regs[R_EBX] = regs->rbx; 86431fc12dfSblueswir1 env->regs[R_ECX] = regs->rcx; 86531fc12dfSblueswir1 env->regs[R_EDX] = regs->rdx; 86631fc12dfSblueswir1 env->regs[R_ESI] = regs->rsi; 86731fc12dfSblueswir1 env->regs[R_EDI] = regs->rdi; 86831fc12dfSblueswir1 env->regs[R_EBP] = regs->rbp; 86931fc12dfSblueswir1 env->regs[R_ESP] = regs->rsp; 87031fc12dfSblueswir1 env->eip = regs->rip; 87131fc12dfSblueswir1 #else 87231fc12dfSblueswir1 env->regs[R_EAX] = regs->eax; 87331fc12dfSblueswir1 env->regs[R_EBX] = regs->ebx; 87431fc12dfSblueswir1 env->regs[R_ECX] = regs->ecx; 87531fc12dfSblueswir1 env->regs[R_EDX] = regs->edx; 87631fc12dfSblueswir1 env->regs[R_ESI] = regs->esi; 87731fc12dfSblueswir1 env->regs[R_EDI] = regs->edi; 87831fc12dfSblueswir1 env->regs[R_EBP] = regs->ebp; 87931fc12dfSblueswir1 env->regs[R_ESP] = regs->esp; 88031fc12dfSblueswir1 env->eip = regs->eip; 88131fc12dfSblueswir1 #endif 88231fc12dfSblueswir1 88331fc12dfSblueswir1 /* linux interrupt setup */ 88431fc12dfSblueswir1 #ifndef TARGET_ABI32 88531fc12dfSblueswir1 env->idt.limit = 511; 88631fc12dfSblueswir1 #else 88731fc12dfSblueswir1 env->idt.limit = 255; 88831fc12dfSblueswir1 #endif 88931fc12dfSblueswir1 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), 89031fc12dfSblueswir1 PROT_READ|PROT_WRITE, 89131fc12dfSblueswir1 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 89231fc12dfSblueswir1 idt_table = g2h(env->idt.base); 89331fc12dfSblueswir1 set_idt(0, 0); 89431fc12dfSblueswir1 set_idt(1, 0); 89531fc12dfSblueswir1 set_idt(2, 0); 89631fc12dfSblueswir1 set_idt(3, 3); 89731fc12dfSblueswir1 set_idt(4, 3); 89831fc12dfSblueswir1 set_idt(5, 0); 89931fc12dfSblueswir1 set_idt(6, 0); 90031fc12dfSblueswir1 set_idt(7, 0); 90131fc12dfSblueswir1 set_idt(8, 0); 90231fc12dfSblueswir1 set_idt(9, 0); 90331fc12dfSblueswir1 set_idt(10, 0); 90431fc12dfSblueswir1 set_idt(11, 0); 90531fc12dfSblueswir1 set_idt(12, 0); 90631fc12dfSblueswir1 set_idt(13, 0); 90731fc12dfSblueswir1 set_idt(14, 0); 90831fc12dfSblueswir1 set_idt(15, 0); 90931fc12dfSblueswir1 set_idt(16, 0); 91031fc12dfSblueswir1 set_idt(17, 0); 91131fc12dfSblueswir1 set_idt(18, 0); 91231fc12dfSblueswir1 set_idt(19, 0); 91331fc12dfSblueswir1 set_idt(0x80, 3); 91431fc12dfSblueswir1 91531fc12dfSblueswir1 /* linux segment setup */ 91631fc12dfSblueswir1 { 91731fc12dfSblueswir1 uint64_t *gdt_table; 91831fc12dfSblueswir1 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, 91931fc12dfSblueswir1 PROT_READ|PROT_WRITE, 92031fc12dfSblueswir1 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); 92131fc12dfSblueswir1 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; 92231fc12dfSblueswir1 gdt_table = g2h(env->gdt.base); 92331fc12dfSblueswir1 #ifdef TARGET_ABI32 92431fc12dfSblueswir1 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 92531fc12dfSblueswir1 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 92631fc12dfSblueswir1 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 92731fc12dfSblueswir1 #else 92831fc12dfSblueswir1 /* 64 bit code segment */ 92931fc12dfSblueswir1 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, 93031fc12dfSblueswir1 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 93131fc12dfSblueswir1 DESC_L_MASK | 93231fc12dfSblueswir1 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); 93331fc12dfSblueswir1 #endif 93431fc12dfSblueswir1 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, 93531fc12dfSblueswir1 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | 93631fc12dfSblueswir1 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); 93731fc12dfSblueswir1 } 93831fc12dfSblueswir1 93931fc12dfSblueswir1 cpu_x86_load_seg(env, R_CS, __USER_CS); 94031fc12dfSblueswir1 cpu_x86_load_seg(env, R_SS, __USER_DS); 94131fc12dfSblueswir1 #ifdef TARGET_ABI32 94231fc12dfSblueswir1 cpu_x86_load_seg(env, R_DS, __USER_DS); 94331fc12dfSblueswir1 cpu_x86_load_seg(env, R_ES, __USER_DS); 94431fc12dfSblueswir1 cpu_x86_load_seg(env, R_FS, __USER_DS); 94531fc12dfSblueswir1 cpu_x86_load_seg(env, R_GS, __USER_DS); 94631fc12dfSblueswir1 /* This hack makes Wine work... */ 94731fc12dfSblueswir1 env->segs[R_FS].selector = 0; 94831fc12dfSblueswir1 #else 94931fc12dfSblueswir1 cpu_x86_load_seg(env, R_DS, 0); 95031fc12dfSblueswir1 cpu_x86_load_seg(env, R_ES, 0); 95131fc12dfSblueswir1 cpu_x86_load_seg(env, R_FS, 0); 95231fc12dfSblueswir1 cpu_x86_load_seg(env, R_GS, 0); 95331fc12dfSblueswir1 #endif 95431fc12dfSblueswir1 #elif defined(TARGET_SPARC) 95584778508Sblueswir1 { 95684778508Sblueswir1 int i; 95784778508Sblueswir1 env->pc = regs->pc; 95884778508Sblueswir1 env->npc = regs->npc; 95984778508Sblueswir1 env->y = regs->y; 96084778508Sblueswir1 for(i = 0; i < 8; i++) 96184778508Sblueswir1 env->gregs[i] = regs->u_regs[i]; 96284778508Sblueswir1 for(i = 0; i < 8; i++) 96384778508Sblueswir1 env->regwptr[i] = regs->u_regs[i + 8]; 96484778508Sblueswir1 } 96584778508Sblueswir1 #else 96684778508Sblueswir1 #error unsupported target CPU 96784778508Sblueswir1 #endif 96884778508Sblueswir1 96984778508Sblueswir1 if (gdbstub_port) { 97084778508Sblueswir1 gdbserver_start (gdbstub_port); 97184778508Sblueswir1 gdb_handlesig(env, 0); 97284778508Sblueswir1 } 97384778508Sblueswir1 cpu_loop(env, bsd_type); 97484778508Sblueswir1 /* never exits */ 97584778508Sblueswir1 return 0; 97684778508Sblueswir1 } 977