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author | Anas Nashif <anas.nashif@intel.com> | 2012-11-06 07:50:24 -0800 |
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committer | Anas Nashif <anas.nashif@intel.com> | 2012-11-06 07:50:24 -0800 |
commit | 060629c6ef0b7e5c267d84c91600113264d33120 (patch) | |
tree | 18fcb144ac71b9c4d08ee5d1dc58e2b16c109a5a /bsd-user/main.c | |
download | qemu-060629c6ef0b7e5c267d84c91600113264d33120.tar.gz qemu-060629c6ef0b7e5c267d84c91600113264d33120.tar.bz2 qemu-060629c6ef0b7e5c267d84c91600113264d33120.zip |
Imported Upstream version 1.2.0upstream/1.2.0
Diffstat (limited to 'bsd-user/main.c')
-rw-r--r-- | bsd-user/main.c | 1147 |
1 files changed, 1147 insertions, 0 deletions
diff --git a/bsd-user/main.c b/bsd-user/main.c new file mode 100644 index 000000000..095ae8eaa --- /dev/null +++ b/bsd-user/main.c @@ -0,0 +1,1147 @@ +/* + * qemu user main + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <machine/trap.h> +#include <sys/types.h> +#include <sys/mman.h> + +#include "qemu.h" +#include "qemu-common.h" +/* For tb_lock */ +#include "cpu.h" +#include "tcg.h" +#include "qemu-timer.h" +#include "envlist.h" + +#define DEBUG_LOGFILE "/tmp/qemu.log" + +int singlestep; +#if defined(CONFIG_USE_GUEST_BASE) +unsigned long mmap_min_addr; +unsigned long guest_base; +int have_guest_base; +unsigned long reserved_va; +#endif + +static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; +const char *qemu_uname_release = CONFIG_UNAME_RELEASE; +extern char **environ; +enum BSDType bsd_type; + +/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so + we allocate a bigger stack. Need a better solution, for example + by remapping the process stack directly at the right place */ +unsigned long x86_stack_size = 512 * 1024; + +void gemu_log(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); +} + +#if defined(TARGET_I386) +int cpu_get_pic_interrupt(CPUX86State *env) +{ + return -1; +} +#endif + +/* These are no-ops because we are not threadsafe. */ +static inline void cpu_exec_start(CPUArchState *env) +{ +} + +static inline void cpu_exec_end(CPUArchState *env) +{ +} + +static inline void start_exclusive(void) +{ +} + +static inline void end_exclusive(void) +{ +} + +void fork_start(void) +{ +} + +void fork_end(int child) +{ + if (child) { + gdbserver_fork(thread_env); + } +} + +void cpu_list_lock(void) +{ +} + +void cpu_list_unlock(void) +{ +} + +#ifdef TARGET_I386 +/***********************************************************/ +/* CPUX86 core interface */ + +void cpu_smm_update(CPUX86State *env) +{ +} + +uint64_t cpu_get_tsc(CPUX86State *env) +{ + return cpu_get_real_ticks(); +} + +static void write_dt(void *ptr, unsigned long addr, unsigned long limit, + int flags) +{ + unsigned int e1, e2; + uint32_t *p; + e1 = (addr << 16) | (limit & 0xffff); + e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); + e2 |= flags; + p = ptr; + p[0] = tswap32(e1); + p[1] = tswap32(e2); +} + +static uint64_t *idt_table; +#ifdef TARGET_X86_64 +static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, + uint64_t addr, unsigned int sel) +{ + uint32_t *p, e1, e2; + e1 = (addr & 0xffff) | (sel << 16); + e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); + p = ptr; + p[0] = tswap32(e1); + p[1] = tswap32(e2); + p[2] = tswap32(addr >> 32); + p[3] = 0; +} +/* only dpl matters as we do only user space emulation */ +static void set_idt(int n, unsigned int dpl) +{ + set_gate64(idt_table + n * 2, 0, dpl, 0, 0); +} +#else +static void set_gate(void *ptr, unsigned int type, unsigned int dpl, + uint32_t addr, unsigned int sel) +{ + uint32_t *p, e1, e2; + e1 = (addr & 0xffff) | (sel << 16); + e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); + p = ptr; + p[0] = tswap32(e1); + p[1] = tswap32(e2); +} + +/* only dpl matters as we do only user space emulation */ +static void set_idt(int n, unsigned int dpl) +{ + set_gate(idt_table + n, 0, dpl, 0, 0); +} +#endif + +void cpu_loop(CPUX86State *env) +{ + int trapnr; + abi_ulong pc; + //target_siginfo_t info; + + for(;;) { + trapnr = cpu_x86_exec(env); + switch(trapnr) { + case 0x80: + /* syscall from int $0x80 */ + if (bsd_type == target_freebsd) { + abi_ulong params = (abi_ulong) env->regs[R_ESP] + + sizeof(int32_t); + int32_t syscall_nr = env->regs[R_EAX]; + int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8; + + if (syscall_nr == TARGET_FREEBSD_NR_syscall) { + get_user_s32(syscall_nr, params); + params += sizeof(int32_t); + } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) { + get_user_s32(syscall_nr, params); + params += sizeof(int64_t); + } + get_user_s32(arg1, params); + params += sizeof(int32_t); + get_user_s32(arg2, params); + params += sizeof(int32_t); + get_user_s32(arg3, params); + params += sizeof(int32_t); + get_user_s32(arg4, params); + params += sizeof(int32_t); + get_user_s32(arg5, params); + params += sizeof(int32_t); + get_user_s32(arg6, params); + params += sizeof(int32_t); + get_user_s32(arg7, params); + params += sizeof(int32_t); + get_user_s32(arg8, params); + env->regs[R_EAX] = do_freebsd_syscall(env, + syscall_nr, + arg1, + arg2, + arg3, + arg4, + arg5, + arg6, + arg7, + arg8); + } else { //if (bsd_type == target_openbsd) + env->regs[R_EAX] = do_openbsd_syscall(env, + env->regs[R_EAX], + env->regs[R_EBX], + env->regs[R_ECX], + env->regs[R_EDX], + env->regs[R_ESI], + env->regs[R_EDI], + env->regs[R_EBP]); + } + if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { + env->regs[R_EAX] = -env->regs[R_EAX]; + env->eflags |= CC_C; + } else { + env->eflags &= ~CC_C; + } + break; +#ifndef TARGET_ABI32 + case EXCP_SYSCALL: + /* syscall from syscall instruction */ + if (bsd_type == target_freebsd) + env->regs[R_EAX] = do_freebsd_syscall(env, + env->regs[R_EAX], + env->regs[R_EDI], + env->regs[R_ESI], + env->regs[R_EDX], + env->regs[R_ECX], + env->regs[8], + env->regs[9], 0, 0); + else { //if (bsd_type == target_openbsd) + env->regs[R_EAX] = do_openbsd_syscall(env, + env->regs[R_EAX], + env->regs[R_EDI], + env->regs[R_ESI], + env->regs[R_EDX], + env->regs[10], + env->regs[8], + env->regs[9]); + } + env->eip = env->exception_next_eip; + if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) { + env->regs[R_EAX] = -env->regs[R_EAX]; + env->eflags |= CC_C; + } else { + env->eflags &= ~CC_C; + } + break; +#endif +#if 0 + case EXCP0B_NOSEG: + case EXCP0C_STACK: + info.si_signo = SIGBUS; + info.si_errno = 0; + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, &info); + break; + case EXCP0D_GPF: + /* XXX: potential problem if ABI32 */ +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_fault(env); + } else +#endif + { + info.si_signo = SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, &info); + } + break; + case EXCP0E_PAGE: + info.si_signo = SIGSEGV; + info.si_errno = 0; + if (!(env->error_code & 1)) + info.si_code = TARGET_SEGV_MAPERR; + else + info.si_code = TARGET_SEGV_ACCERR; + info._sifields._sigfault._addr = env->cr[2]; + queue_signal(env, info.si_signo, &info); + break; + case EXCP00_DIVZ: +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_trap(env, trapnr); + } else +#endif + { + /* division by zero */ + info.si_signo = SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_INTDIV; + info._sifields._sigfault._addr = env->eip; + queue_signal(env, info.si_signo, &info); + } + break; + case EXCP01_DB: + case EXCP03_INT3: +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_trap(env, trapnr); + } else +#endif + { + info.si_signo = SIGTRAP; + info.si_errno = 0; + if (trapnr == EXCP01_DB) { + info.si_code = TARGET_TRAP_BRKPT; + info._sifields._sigfault._addr = env->eip; + } else { + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + } + queue_signal(env, info.si_signo, &info); + } + break; + case EXCP04_INTO: + case EXCP05_BOUND: +#ifndef TARGET_X86_64 + if (env->eflags & VM_MASK) { + handle_vm86_trap(env, trapnr); + } else +#endif + { + info.si_signo = SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SI_KERNEL; + info._sifields._sigfault._addr = 0; + queue_signal(env, info.si_signo, &info); + } + break; + case EXCP06_ILLOP: + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = TARGET_ILL_ILLOPN; + info._sifields._sigfault._addr = env->eip; + queue_signal(env, info.si_signo, &info); + break; +#endif + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; +#if 0 + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig (env, TARGET_SIGTRAP); + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + queue_signal(env, info.si_signo, &info); + } + } + break; +#endif + default: + pc = env->segs[R_CS].base + env->eip; + fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", + (long)pc, trapnr); + abort(); + } + process_pending_signals(env); + } +} +#endif + +#ifdef TARGET_SPARC +#define SPARC64_STACK_BIAS 2047 + +//#define DEBUG_WIN +/* WARNING: dealing with register windows _is_ complicated. More info + can be found at http://www.sics.se/~psm/sparcstack.html */ +static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) +{ + index = (index + cwp * 16) % (16 * env->nwindows); + /* wrap handling : if cwp is on the last window, then we use the + registers 'after' the end */ + if (index < 8 && env->cwp == env->nwindows - 1) + index += 16 * env->nwindows; + return index; +} + +/* save the register window 'cwp1' */ +static inline void save_window_offset(CPUSPARCState *env, int cwp1) +{ + unsigned int i; + abi_ulong sp_ptr; + + sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; +#ifdef TARGET_SPARC64 + if (sp_ptr & 3) + sp_ptr += SPARC64_STACK_BIAS; +#endif +#if defined(DEBUG_WIN) + printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", + sp_ptr, cwp1); +#endif + for(i = 0; i < 16; i++) { + /* FIXME - what to do if put_user() fails? */ + put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); + sp_ptr += sizeof(abi_ulong); + } +} + +static void save_window(CPUSPARCState *env) +{ +#ifndef TARGET_SPARC64 + unsigned int new_wim; + new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & + ((1LL << env->nwindows) - 1); + save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); + env->wim = new_wim; +#else + save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); + env->cansave++; + env->canrestore--; +#endif +} + +static void restore_window(CPUSPARCState *env) +{ +#ifndef TARGET_SPARC64 + unsigned int new_wim; +#endif + unsigned int i, cwp1; + abi_ulong sp_ptr; + +#ifndef TARGET_SPARC64 + new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & + ((1LL << env->nwindows) - 1); +#endif + + /* restore the invalid window */ + cwp1 = cpu_cwp_inc(env, env->cwp + 1); + sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; +#ifdef TARGET_SPARC64 + if (sp_ptr & 3) + sp_ptr += SPARC64_STACK_BIAS; +#endif +#if defined(DEBUG_WIN) + printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", + sp_ptr, cwp1); +#endif + for(i = 0; i < 16; i++) { + /* FIXME - what to do if get_user() fails? */ + get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); + sp_ptr += sizeof(abi_ulong); + } +#ifdef TARGET_SPARC64 + env->canrestore++; + if (env->cleanwin < env->nwindows - 1) + env->cleanwin++; + env->cansave--; +#else + env->wim = new_wim; +#endif +} + +static void flush_windows(CPUSPARCState *env) +{ + int offset, cwp1; + + offset = 1; + for(;;) { + /* if restore would invoke restore_window(), then we can stop */ + cwp1 = cpu_cwp_inc(env, env->cwp + offset); +#ifndef TARGET_SPARC64 + if (env->wim & (1 << cwp1)) + break; +#else + if (env->canrestore == 0) + break; + env->cansave++; + env->canrestore--; +#endif + save_window_offset(env, cwp1); + offset++; + } + cwp1 = cpu_cwp_inc(env, env->cwp + 1); +#ifndef TARGET_SPARC64 + /* set wim so that restore will reload the registers */ + env->wim = 1 << cwp1; +#endif +#if defined(DEBUG_WIN) + printf("flush_windows: nb=%d\n", offset - 1); +#endif +} + +void cpu_loop(CPUSPARCState *env) +{ + int trapnr, ret, syscall_nr; + //target_siginfo_t info; + + while (1) { + trapnr = cpu_sparc_exec (env); + + switch (trapnr) { +#ifndef TARGET_SPARC64 + case 0x80: +#else + /* FreeBSD uses 0x141 for syscalls too */ + case 0x141: + if (bsd_type != target_freebsd) + goto badtrap; + case 0x100: +#endif + syscall_nr = env->gregs[1]; + if (bsd_type == target_freebsd) + ret = do_freebsd_syscall(env, syscall_nr, + env->regwptr[0], env->regwptr[1], + env->regwptr[2], env->regwptr[3], + env->regwptr[4], env->regwptr[5], 0, 0); + else if (bsd_type == target_netbsd) + ret = do_netbsd_syscall(env, syscall_nr, + env->regwptr[0], env->regwptr[1], + env->regwptr[2], env->regwptr[3], + env->regwptr[4], env->regwptr[5]); + else { //if (bsd_type == target_openbsd) +#if defined(TARGET_SPARC64) + syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | + TARGET_OPENBSD_SYSCALL_G2RFLAG); +#endif + ret = do_openbsd_syscall(env, syscall_nr, + env->regwptr[0], env->regwptr[1], + env->regwptr[2], env->regwptr[3], + env->regwptr[4], env->regwptr[5]); + } + if ((unsigned int)ret >= (unsigned int)(-515)) { + ret = -ret; +#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) + env->xcc |= PSR_CARRY; +#else + env->psr |= PSR_CARRY; +#endif + } else { +#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) + env->xcc &= ~PSR_CARRY; +#else + env->psr &= ~PSR_CARRY; +#endif + } + env->regwptr[0] = ret; + /* next instruction */ +#if defined(TARGET_SPARC64) + if (bsd_type == target_openbsd && + env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) { + env->pc = env->gregs[2]; + env->npc = env->pc + 4; + } else if (bsd_type == target_openbsd && + env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) { + env->pc = env->gregs[7]; + env->npc = env->pc + 4; + } else { + env->pc = env->npc; + env->npc = env->npc + 4; + } +#else + env->pc = env->npc; + env->npc = env->npc + 4; +#endif + break; + case 0x83: /* flush windows */ +#ifdef TARGET_ABI32 + case 0x103: +#endif + flush_windows(env); + /* next instruction */ + env->pc = env->npc; + env->npc = env->npc + 4; + break; +#ifndef TARGET_SPARC64 + case TT_WIN_OVF: /* window overflow */ + save_window(env); + break; + case TT_WIN_UNF: /* window underflow */ + restore_window(env); + break; + case TT_TFAULT: + case TT_DFAULT: +#if 0 + { + info.si_signo = SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = env->mmuregs[4]; + queue_signal(env, info.si_signo, &info); + } +#endif + break; +#else + case TT_SPILL: /* window overflow */ + save_window(env); + break; + case TT_FILL: /* window underflow */ + restore_window(env); + break; + case TT_TFAULT: + case TT_DFAULT: +#if 0 + { + info.si_signo = SIGSEGV; + info.si_errno = 0; + /* XXX: check env->error_code */ + info.si_code = TARGET_SEGV_MAPERR; + if (trapnr == TT_DFAULT) + info._sifields._sigfault._addr = env->dmmuregs[4]; + else + info._sifields._sigfault._addr = env->tsptr->tpc; + //queue_signal(env, info.si_signo, &info); + } +#endif + break; +#endif + case EXCP_INTERRUPT: + /* just indicate that signals should be handled asap */ + break; + case EXCP_DEBUG: + { + int sig; + + sig = gdb_handlesig (env, TARGET_SIGTRAP); +#if 0 + if (sig) + { + info.si_signo = sig; + info.si_errno = 0; + info.si_code = TARGET_TRAP_BRKPT; + //queue_signal(env, info.si_signo, &info); + } +#endif + } + break; + default: +#ifdef TARGET_SPARC64 + badtrap: +#endif + printf ("Unhandled trap: 0x%x\n", trapnr); + cpu_dump_state(env, stderr, fprintf, 0); + exit (1); + } + process_pending_signals (env); + } +} + +#endif + +static void usage(void) +{ + printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" + "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n" + "BSD CPU emulator (compiled for %s emulation)\n" + "\n" + "Standard options:\n" + "-h print this help\n" + "-g port wait gdb connection to port\n" + "-L path set the elf interpreter prefix (default=%s)\n" + "-s size set the stack size in bytes (default=%ld)\n" + "-cpu model select CPU (-cpu help for list)\n" + "-drop-ld-preload drop LD_PRELOAD for target process\n" + "-E var=value sets/modifies targets environment variable(s)\n" + "-U var unsets targets environment variable(s)\n" +#if defined(CONFIG_USE_GUEST_BASE) + "-B address set guest_base address to address\n" +#endif + "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" + "\n" + "Debug options:\n" + "-d options activate log (default logfile=%s)\n" + "-D logfile override default logfile location\n" + "-p pagesize set the host page size to 'pagesize'\n" + "-singlestep always run in singlestep mode\n" + "-strace log system calls\n" + "\n" + "Environment variables:\n" + "QEMU_STRACE Print system calls and arguments similar to the\n" + " 'strace' program. Enable by setting to any value.\n" + "You can use -E and -U options to set/unset environment variables\n" + "for target process. It is possible to provide several variables\n" + "by repeating the option. For example:\n" + " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" + "Note that if you provide several changes to single variable\n" + "last change will stay in effect.\n" + , + TARGET_ARCH, + interp_prefix, + x86_stack_size, + DEBUG_LOGFILE); + exit(1); +} + +THREAD CPUArchState *thread_env; + +/* Assumes contents are already zeroed. */ +void init_task_state(TaskState *ts) +{ + int i; + + ts->used = 1; + ts->first_free = ts->sigqueue_table; + for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { + ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; + } + ts->sigqueue_table[i].next = NULL; +} + +int main(int argc, char **argv) +{ + const char *filename; + const char *cpu_model; + const char *log_file = DEBUG_LOGFILE; + const char *log_mask = NULL; + struct target_pt_regs regs1, *regs = ®s1; + struct image_info info1, *info = &info1; + TaskState ts1, *ts = &ts1; + CPUArchState *env; + int optind; + const char *r; + int gdbstub_port = 0; + char **target_environ, **wrk; + envlist_t *envlist = NULL; + bsd_type = target_openbsd; + + if (argc <= 1) + usage(); + + module_call_init(MODULE_INIT_QOM); + + if ((envlist = envlist_create()) == NULL) { + (void) fprintf(stderr, "Unable to allocate envlist\n"); + exit(1); + } + + /* add current environment into the list */ + for (wrk = environ; *wrk != NULL; wrk++) { + (void) envlist_setenv(envlist, *wrk); + } + + cpu_model = NULL; +#if defined(cpudef_setup) + cpudef_setup(); /* parse cpu definitions in target config file (TBD) */ +#endif + + optind = 1; + for(;;) { + if (optind >= argc) + break; + r = argv[optind]; + if (r[0] != '-') + break; + optind++; + r++; + if (!strcmp(r, "-")) { + break; + } else if (!strcmp(r, "d")) { + if (optind >= argc) { + break; + } + log_mask = argv[optind++]; + } else if (!strcmp(r, "D")) { + if (optind >= argc) { + break; + } + log_file = argv[optind++]; + } else if (!strcmp(r, "E")) { + r = argv[optind++]; + if (envlist_setenv(envlist, r) != 0) + usage(); + } else if (!strcmp(r, "ignore-environment")) { + envlist_free(envlist); + if ((envlist = envlist_create()) == NULL) { + (void) fprintf(stderr, "Unable to allocate envlist\n"); + exit(1); + } + } else if (!strcmp(r, "U")) { + r = argv[optind++]; + if (envlist_unsetenv(envlist, r) != 0) + usage(); + } else if (!strcmp(r, "s")) { + r = argv[optind++]; + x86_stack_size = strtol(r, (char **)&r, 0); + if (x86_stack_size <= 0) + usage(); + if (*r == 'M') + x86_stack_size *= 1024 * 1024; + else if (*r == 'k' || *r == 'K') + x86_stack_size *= 1024; + } else if (!strcmp(r, "L")) { + interp_prefix = argv[optind++]; + } else if (!strcmp(r, "p")) { + qemu_host_page_size = atoi(argv[optind++]); + if (qemu_host_page_size == 0 || + (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { + fprintf(stderr, "page size must be a power of two\n"); + exit(1); + } + } else if (!strcmp(r, "g")) { + gdbstub_port = atoi(argv[optind++]); + } else if (!strcmp(r, "r")) { + qemu_uname_release = argv[optind++]; + } else if (!strcmp(r, "cpu")) { + cpu_model = argv[optind++]; + if (is_help_option(cpu_model)) { +/* XXX: implement xxx_cpu_list for targets that still miss it */ +#if defined(cpu_list) + cpu_list(stdout, &fprintf); +#endif + exit(1); + } +#if defined(CONFIG_USE_GUEST_BASE) + } else if (!strcmp(r, "B")) { + guest_base = strtol(argv[optind++], NULL, 0); + have_guest_base = 1; +#endif + } else if (!strcmp(r, "drop-ld-preload")) { + (void) envlist_unsetenv(envlist, "LD_PRELOAD"); + } else if (!strcmp(r, "bsd")) { + if (!strcasecmp(argv[optind], "freebsd")) { + bsd_type = target_freebsd; + } else if (!strcasecmp(argv[optind], "netbsd")) { + bsd_type = target_netbsd; + } else if (!strcasecmp(argv[optind], "openbsd")) { + bsd_type = target_openbsd; + } else { + usage(); + } + optind++; + } else if (!strcmp(r, "singlestep")) { + singlestep = 1; + } else if (!strcmp(r, "strace")) { + do_strace = 1; + } else + { + usage(); + } + } + + /* init debug */ + cpu_set_log_filename(log_file); + if (log_mask) { + int mask; + const CPULogItem *item; + + mask = cpu_str_to_log_mask(log_mask); + if (!mask) { + printf("Log items (comma separated):\n"); + for (item = cpu_log_items; item->mask != 0; item++) { + printf("%-10s %s\n", item->name, item->help); + } + exit(1); + } + cpu_set_log(mask); + } + + if (optind >= argc) { + usage(); + } + filename = argv[optind]; + + /* Zero out regs */ + memset(regs, 0, sizeof(struct target_pt_regs)); + + /* Zero out image_info */ + memset(info, 0, sizeof(struct image_info)); + + /* Scan interp_prefix dir for replacement files. */ + init_paths(interp_prefix); + + if (cpu_model == NULL) { +#if defined(TARGET_I386) +#ifdef TARGET_X86_64 + cpu_model = "qemu64"; +#else + cpu_model = "qemu32"; +#endif +#elif defined(TARGET_SPARC) +#ifdef TARGET_SPARC64 + cpu_model = "TI UltraSparc II"; +#else + cpu_model = "Fujitsu MB86904"; +#endif +#else + cpu_model = "any"; +#endif + } + tcg_exec_init(0); + cpu_exec_init_all(); + /* NOTE: we need to init the CPU at this stage to get + qemu_host_page_size */ + env = cpu_init(cpu_model); + if (!env) { + fprintf(stderr, "Unable to find CPU definition\n"); + exit(1); + } +#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC) + cpu_reset(ENV_GET_CPU(env)); +#endif + thread_env = env; + + if (getenv("QEMU_STRACE")) { + do_strace = 1; + } + + target_environ = envlist_to_environ(envlist, NULL); + envlist_free(envlist); + +#if defined(CONFIG_USE_GUEST_BASE) + /* + * Now that page sizes are configured in cpu_init() we can do + * proper page alignment for guest_base. + */ + guest_base = HOST_PAGE_ALIGN(guest_base); + + /* + * Read in mmap_min_addr kernel parameter. This value is used + * When loading the ELF image to determine whether guest_base + * is needed. + * + * When user has explicitly set the quest base, we skip this + * test. + */ + if (!have_guest_base) { + FILE *fp; + + if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) { + unsigned long tmp; + if (fscanf(fp, "%lu", &tmp) == 1) { + mmap_min_addr = tmp; + qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr); + } + fclose(fp); + } + } +#endif /* CONFIG_USE_GUEST_BASE */ + + if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { + printf("Error loading %s\n", filename); + _exit(1); + } + + for (wrk = target_environ; *wrk; wrk++) { + free(*wrk); + } + + free(target_environ); + + if (qemu_log_enabled()) { +#if defined(CONFIG_USE_GUEST_BASE) + qemu_log("guest_base 0x%lx\n", guest_base); +#endif + log_page_dump(); + + qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); + qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); + qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", + info->start_code); + qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", + info->start_data); + qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); + qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", + info->start_stack); + qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); + qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); + } + + target_set_brk(info->brk); + syscall_init(); + signal_init(); + +#if defined(CONFIG_USE_GUEST_BASE) + /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay + generating the prologue until now so that the prologue can take + the real value of GUEST_BASE into account. */ + tcg_prologue_init(&tcg_ctx); +#endif + + /* build Task State */ + memset(ts, 0, sizeof(TaskState)); + init_task_state(ts); + ts->info = info; + env->opaque = ts; + +#if defined(TARGET_I386) + cpu_x86_set_cpl(env, 3); + + env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; + env->hflags |= HF_PE_MASK; + if (env->cpuid_features & CPUID_SSE) { + env->cr[4] |= CR4_OSFXSR_MASK; + env->hflags |= HF_OSFXSR_MASK; + } +#ifndef TARGET_ABI32 + /* enable 64 bit mode if possible */ + if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) { + fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); + exit(1); + } + env->cr[4] |= CR4_PAE_MASK; + env->efer |= MSR_EFER_LMA | MSR_EFER_LME; + env->hflags |= HF_LMA_MASK; +#endif + + /* flags setup : we activate the IRQs by default as in user mode */ + env->eflags |= IF_MASK; + + /* linux register setup */ +#ifndef TARGET_ABI32 + env->regs[R_EAX] = regs->rax; + env->regs[R_EBX] = regs->rbx; + env->regs[R_ECX] = regs->rcx; + env->regs[R_EDX] = regs->rdx; + env->regs[R_ESI] = regs->rsi; + env->regs[R_EDI] = regs->rdi; + env->regs[R_EBP] = regs->rbp; + env->regs[R_ESP] = regs->rsp; + env->eip = regs->rip; +#else + env->regs[R_EAX] = regs->eax; + env->regs[R_EBX] = regs->ebx; + env->regs[R_ECX] = regs->ecx; + env->regs[R_EDX] = regs->edx; + env->regs[R_ESI] = regs->esi; + env->regs[R_EDI] = regs->edi; + env->regs[R_EBP] = regs->ebp; + env->regs[R_ESP] = regs->esp; + env->eip = regs->eip; +#endif + + /* linux interrupt setup */ +#ifndef TARGET_ABI32 + env->idt.limit = 511; +#else + env->idt.limit = 255; +#endif + env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), + PROT_READ|PROT_WRITE, + MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); + idt_table = g2h(env->idt.base); + set_idt(0, 0); + set_idt(1, 0); + set_idt(2, 0); + set_idt(3, 3); + set_idt(4, 3); + set_idt(5, 0); + set_idt(6, 0); + set_idt(7, 0); + set_idt(8, 0); + set_idt(9, 0); + set_idt(10, 0); + set_idt(11, 0); + set_idt(12, 0); + set_idt(13, 0); + set_idt(14, 0); + set_idt(15, 0); + set_idt(16, 0); + set_idt(17, 0); + set_idt(18, 0); + set_idt(19, 0); + set_idt(0x80, 3); + + /* linux segment setup */ + { + uint64_t *gdt_table; + env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, + PROT_READ|PROT_WRITE, + MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); + env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; + gdt_table = g2h(env->gdt.base); +#ifdef TARGET_ABI32 + write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | + (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); +#else + /* 64 bit code segment */ + write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | + DESC_L_MASK | + (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); +#endif + write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, + DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | + (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); + } + + cpu_x86_load_seg(env, R_CS, __USER_CS); + cpu_x86_load_seg(env, R_SS, __USER_DS); +#ifdef TARGET_ABI32 + cpu_x86_load_seg(env, R_DS, __USER_DS); + cpu_x86_load_seg(env, R_ES, __USER_DS); + cpu_x86_load_seg(env, R_FS, __USER_DS); + cpu_x86_load_seg(env, R_GS, __USER_DS); + /* This hack makes Wine work... */ + env->segs[R_FS].selector = 0; +#else + cpu_x86_load_seg(env, R_DS, 0); + cpu_x86_load_seg(env, R_ES, 0); + cpu_x86_load_seg(env, R_FS, 0); + cpu_x86_load_seg(env, R_GS, 0); +#endif +#elif defined(TARGET_SPARC) + { + int i; + env->pc = regs->pc; + env->npc = regs->npc; + env->y = regs->y; + for(i = 0; i < 8; i++) + env->gregs[i] = regs->u_regs[i]; + for(i = 0; i < 8; i++) + env->regwptr[i] = regs->u_regs[i + 8]; + } +#else +#error unsupported target CPU +#endif + + if (gdbstub_port) { + gdbserver_start (gdbstub_port); + gdb_handlesig(env, 0); + } + cpu_loop(env); + /* never exits */ + return 0; +} |