1268 lines
39 KiB
C
1268 lines
39 KiB
C
/*
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* qemu user main
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include "qemu.h"
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#define DEBUG_LOGFILE "/tmp/qemu.log"
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#ifdef __APPLE__
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#include <crt_externs.h>
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# define environ (*_NSGetEnviron())
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#endif
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static const char *interp_prefix = CONFIG_QEMU_PREFIX;
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#if defined(__i386__) && !defined(CONFIG_STATIC)
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/* Force usage of an ELF interpreter even if it is an ELF shared
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object ! */
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const char interp[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2";
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#endif
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/* for recent libc, we add these dummy symbols which are not declared
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when generating a linked object (bug in ld ?) */
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#if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(CONFIG_STATIC)
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long __preinit_array_start[0];
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long __preinit_array_end[0];
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long __init_array_start[0];
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long __init_array_end[0];
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long __fini_array_start[0];
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long __fini_array_end[0];
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#endif
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/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
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we allocate a bigger stack. Need a better solution, for example
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by remapping the process stack directly at the right place */
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unsigned long x86_stack_size = 512 * 1024;
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void gemu_log(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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void cpu_outb(CPUState *env, int addr, int val)
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{
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fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
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}
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void cpu_outw(CPUState *env, int addr, int val)
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{
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fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
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}
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void cpu_outl(CPUState *env, int addr, int val)
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{
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fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
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}
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int cpu_inb(CPUState *env, int addr)
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{
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fprintf(stderr, "inb: port=0x%04x\n", addr);
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return 0;
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}
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int cpu_inw(CPUState *env, int addr)
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{
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fprintf(stderr, "inw: port=0x%04x\n", addr);
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return 0;
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}
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int cpu_inl(CPUState *env, int addr)
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{
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fprintf(stderr, "inl: port=0x%04x\n", addr);
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return 0;
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}
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int cpu_get_pic_interrupt(CPUState *env)
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{
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return -1;
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}
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/* timers for rdtsc */
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#if defined(__i386__)
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int64_t cpu_get_real_ticks(void)
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{
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int64_t val;
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asm volatile ("rdtsc" : "=A" (val));
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return val;
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}
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#elif defined(__x86_64__)
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int64_t cpu_get_real_ticks(void)
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{
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uint32_t low,high;
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int64_t val;
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asm volatile("rdtsc" : "=a" (low), "=d" (high));
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val = high;
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val <<= 32;
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val |= low;
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return val;
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}
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#else
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static uint64_t emu_time;
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int64_t cpu_get_real_ticks(void)
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{
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return emu_time++;
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}
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#endif
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#ifdef TARGET_I386
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/***********************************************************/
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/* CPUX86 core interface */
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uint64_t cpu_get_tsc(CPUX86State *env)
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{
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return cpu_get_real_ticks();
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}
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static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
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int flags)
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{
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unsigned int e1, e2;
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e1 = (addr << 16) | (limit & 0xffff);
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e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
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e2 |= flags;
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stl((uint8_t *)ptr, e1);
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stl((uint8_t *)ptr + 4, e2);
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}
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static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
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unsigned long addr, unsigned int sel)
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{
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unsigned int e1, e2;
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e1 = (addr & 0xffff) | (sel << 16);
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e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
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stl((uint8_t *)ptr, e1);
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stl((uint8_t *)ptr + 4, e2);
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}
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uint64_t gdt_table[6];
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uint64_t idt_table[256];
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/* only dpl matters as we do only user space emulation */
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static void set_idt(int n, unsigned int dpl)
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{
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set_gate(idt_table + n, 0, dpl, 0, 0);
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}
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void cpu_loop(CPUX86State *env)
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{
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int trapnr;
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target_ulong pc;
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target_siginfo_t info;
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for(;;) {
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trapnr = cpu_x86_exec(env);
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switch(trapnr) {
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case 0x80:
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/* linux syscall */
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env->regs[R_EAX] = do_syscall(env,
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env->regs[R_EAX],
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env->regs[R_EBX],
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env->regs[R_ECX],
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env->regs[R_EDX],
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env->regs[R_ESI],
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env->regs[R_EDI],
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env->regs[R_EBP]);
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break;
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case EXCP0B_NOSEG:
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case EXCP0C_STACK:
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info.si_signo = SIGBUS;
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info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL;
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info._sifields._sigfault._addr = 0;
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queue_signal(info.si_signo, &info);
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break;
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case EXCP0D_GPF:
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if (env->eflags & VM_MASK) {
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handle_vm86_fault(env);
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} else {
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info.si_signo = SIGSEGV;
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info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL;
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info._sifields._sigfault._addr = 0;
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queue_signal(info.si_signo, &info);
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}
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break;
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case EXCP0E_PAGE:
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info.si_signo = SIGSEGV;
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info.si_errno = 0;
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if (!(env->error_code & 1))
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info.si_code = TARGET_SEGV_MAPERR;
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else
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info.si_code = TARGET_SEGV_ACCERR;
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info._sifields._sigfault._addr = env->cr[2];
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queue_signal(info.si_signo, &info);
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break;
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case EXCP00_DIVZ:
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if (env->eflags & VM_MASK) {
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handle_vm86_trap(env, trapnr);
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} else {
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/* division by zero */
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info.si_signo = SIGFPE;
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info.si_errno = 0;
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info.si_code = TARGET_FPE_INTDIV;
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info._sifields._sigfault._addr = env->eip;
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queue_signal(info.si_signo, &info);
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}
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break;
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case EXCP01_SSTP:
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case EXCP03_INT3:
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if (env->eflags & VM_MASK) {
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handle_vm86_trap(env, trapnr);
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} else {
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info.si_signo = SIGTRAP;
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info.si_errno = 0;
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if (trapnr == EXCP01_SSTP) {
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info.si_code = TARGET_TRAP_BRKPT;
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info._sifields._sigfault._addr = env->eip;
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} else {
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info.si_code = TARGET_SI_KERNEL;
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info._sifields._sigfault._addr = 0;
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}
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queue_signal(info.si_signo, &info);
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}
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break;
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case EXCP04_INTO:
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case EXCP05_BOUND:
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if (env->eflags & VM_MASK) {
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handle_vm86_trap(env, trapnr);
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} else {
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info.si_signo = SIGSEGV;
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info.si_errno = 0;
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info.si_code = TARGET_SI_KERNEL;
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info._sifields._sigfault._addr = 0;
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queue_signal(info.si_signo, &info);
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}
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break;
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case EXCP06_ILLOP:
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info.si_signo = SIGILL;
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info.si_errno = 0;
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info.si_code = TARGET_ILL_ILLOPN;
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info._sifields._sigfault._addr = env->eip;
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queue_signal(info.si_signo, &info);
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break;
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case EXCP_INTERRUPT:
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/* just indicate that signals should be handled asap */
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break;
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case EXCP_DEBUG:
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{
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int sig;
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sig = gdb_handlesig (env, TARGET_SIGTRAP);
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if (sig)
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{
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info.si_signo = sig;
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info.si_errno = 0;
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info.si_code = TARGET_TRAP_BRKPT;
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queue_signal(info.si_signo, &info);
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}
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}
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break;
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default:
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pc = env->segs[R_CS].base + env->eip;
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fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
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(long)pc, trapnr);
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abort();
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}
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process_pending_signals(env);
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}
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}
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#endif
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#ifdef TARGET_ARM
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/* XXX: find a better solution */
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extern void tb_invalidate_page_range(target_ulong start, target_ulong end);
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static void arm_cache_flush(target_ulong start, target_ulong last)
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{
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target_ulong addr, last1;
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if (last < start)
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return;
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addr = start;
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for(;;) {
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last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
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if (last1 > last)
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last1 = last;
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tb_invalidate_page_range(addr, last1 + 1);
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if (last1 == last)
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break;
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addr = last1 + 1;
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}
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}
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void cpu_loop(CPUARMState *env)
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{
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int trapnr;
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unsigned int n, insn;
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target_siginfo_t info;
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for(;;) {
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trapnr = cpu_arm_exec(env);
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switch(trapnr) {
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case EXCP_UDEF:
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{
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TaskState *ts = env->opaque;
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uint32_t opcode;
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/* we handle the FPU emulation here, as Linux */
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/* we get the opcode */
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opcode = ldl_raw((uint8_t *)env->regs[15]);
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if (EmulateAll(opcode, &ts->fpa, env->regs) == 0) {
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info.si_signo = SIGILL;
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info.si_errno = 0;
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info.si_code = TARGET_ILL_ILLOPN;
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info._sifields._sigfault._addr = env->regs[15];
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queue_signal(info.si_signo, &info);
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} else {
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/* increment PC */
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env->regs[15] += 4;
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}
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}
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break;
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case EXCP_SWI:
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{
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/* system call */
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if (env->thumb) {
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insn = lduw((void *)(env->regs[15] - 2));
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n = insn & 0xff;
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} else {
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insn = ldl((void *)(env->regs[15] - 4));
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n = insn & 0xffffff;
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}
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if (n == ARM_NR_cacheflush) {
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arm_cache_flush(env->regs[0], env->regs[1]);
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} else if (n == ARM_NR_semihosting
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|| n == ARM_NR_thumb_semihosting) {
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env->regs[0] = do_arm_semihosting (env);
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} else if (n >= ARM_SYSCALL_BASE
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|| (env->thumb && n == ARM_THUMB_SYSCALL)) {
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/* linux syscall */
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if (env->thumb) {
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n = env->regs[7];
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} else {
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n -= ARM_SYSCALL_BASE;
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}
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env->regs[0] = do_syscall(env,
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n,
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env->regs[0],
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env->regs[1],
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env->regs[2],
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env->regs[3],
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env->regs[4],
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env->regs[5]);
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} else {
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goto error;
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}
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}
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break;
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case EXCP_INTERRUPT:
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/* just indicate that signals should be handled asap */
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break;
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case EXCP_PREFETCH_ABORT:
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case EXCP_DATA_ABORT:
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{
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info.si_signo = SIGSEGV;
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info.si_errno = 0;
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/* XXX: check env->error_code */
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info.si_code = TARGET_SEGV_MAPERR;
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info._sifields._sigfault._addr = env->cp15_6;
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queue_signal(info.si_signo, &info);
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}
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break;
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case EXCP_DEBUG:
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{
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int sig;
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sig = gdb_handlesig (env, TARGET_SIGTRAP);
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if (sig)
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{
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info.si_signo = sig;
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info.si_errno = 0;
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info.si_code = TARGET_TRAP_BRKPT;
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queue_signal(info.si_signo, &info);
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}
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}
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break;
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default:
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error:
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fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
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trapnr);
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cpu_dump_state(env, stderr, fprintf, 0);
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abort();
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}
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process_pending_signals(env);
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}
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}
|
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|
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#endif
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|
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#ifdef TARGET_SPARC
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|
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//#define DEBUG_WIN
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/* WARNING: dealing with register windows _is_ complicated. More info
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can be found at http://www.sics.se/~psm/sparcstack.html */
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static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
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{
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index = (index + cwp * 16) & (16 * NWINDOWS - 1);
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/* wrap handling : if cwp is on the last window, then we use the
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registers 'after' the end */
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if (index < 8 && env->cwp == (NWINDOWS - 1))
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index += (16 * NWINDOWS);
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return index;
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}
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|
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/* save the register window 'cwp1' */
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static inline void save_window_offset(CPUSPARCState *env, int cwp1)
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{
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unsigned int i;
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uint32_t *sp_ptr;
|
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sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
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#if defined(DEBUG_WIN)
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printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
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(int)sp_ptr, cwp1);
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#endif
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for(i = 0; i < 16; i++) {
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put_user(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
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sp_ptr++;
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}
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}
|
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|
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static void save_window(CPUSPARCState *env)
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{
|
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unsigned int new_wim;
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new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) &
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((1LL << NWINDOWS) - 1);
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save_window_offset(env, (env->cwp - 2) & (NWINDOWS - 1));
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env->wim = new_wim;
|
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}
|
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|
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static void restore_window(CPUSPARCState *env)
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{
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unsigned int new_wim, i, cwp1;
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uint32_t *sp_ptr, reg;
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new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) &
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((1LL << NWINDOWS) - 1);
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/* restore the invalid window */
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cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
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sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
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#if defined(DEBUG_WIN)
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printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
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(int)sp_ptr, cwp1);
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#endif
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for(i = 0; i < 16; i++) {
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get_user(reg, sp_ptr);
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env->regbase[get_reg_index(env, cwp1, 8 + i)] = reg;
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sp_ptr++;
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}
|
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env->wim = new_wim;
|
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}
|
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|
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static void flush_windows(CPUSPARCState *env)
|
|
{
|
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int offset, cwp1;
|
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|
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offset = 1;
|
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for(;;) {
|
|
/* if restore would invoke restore_window(), then we can stop */
|
|
cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
|
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if (env->wim & (1 << cwp1))
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break;
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save_window_offset(env, cwp1);
|
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offset++;
|
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}
|
|
/* set wim so that restore will reload the registers */
|
|
cwp1 = (env->cwp + 1) & (NWINDOWS - 1);
|
|
env->wim = 1 << cwp1;
|
|
#if defined(DEBUG_WIN)
|
|
printf("flush_windows: nb=%d\n", offset - 1);
|
|
#endif
|
|
}
|
|
|
|
void cpu_loop (CPUSPARCState *env)
|
|
{
|
|
int trapnr, ret;
|
|
target_siginfo_t info;
|
|
|
|
while (1) {
|
|
trapnr = cpu_sparc_exec (env);
|
|
|
|
switch (trapnr) {
|
|
case 0x88:
|
|
case 0x90:
|
|
ret = do_syscall (env, env->gregs[1],
|
|
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)) {
|
|
env->psr |= PSR_CARRY;
|
|
ret = -ret;
|
|
} else {
|
|
env->psr &= ~PSR_CARRY;
|
|
}
|
|
env->regwptr[0] = ret;
|
|
/* next instruction */
|
|
env->pc = env->npc;
|
|
env->npc = env->npc + 4;
|
|
break;
|
|
case 0x83: /* flush windows */
|
|
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:
|
|
{
|
|
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(info.si_signo, &info);
|
|
}
|
|
break;
|
|
#else
|
|
// XXX
|
|
#endif
|
|
case 0x100: // XXX, why do we get these?
|
|
break;
|
|
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(info.si_signo, &info);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
printf ("Unhandled trap: 0x%x\n", trapnr);
|
|
cpu_dump_state(env, stderr, fprintf, 0);
|
|
exit (1);
|
|
}
|
|
process_pending_signals (env);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef TARGET_PPC
|
|
|
|
static inline uint64_t cpu_ppc_get_tb (CPUState *env)
|
|
{
|
|
/* TO FIX */
|
|
return 0;
|
|
}
|
|
|
|
uint32_t cpu_ppc_load_tbl (CPUState *env)
|
|
{
|
|
return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
|
|
}
|
|
|
|
uint32_t cpu_ppc_load_tbu (CPUState *env)
|
|
{
|
|
return cpu_ppc_get_tb(env) >> 32;
|
|
}
|
|
|
|
static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
|
|
{
|
|
/* TO FIX */
|
|
}
|
|
|
|
void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
|
|
{
|
|
cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
|
|
}
|
|
|
|
void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
|
|
{
|
|
cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
|
|
}
|
|
|
|
uint32_t cpu_ppc_load_decr (CPUState *env)
|
|
{
|
|
/* TO FIX */
|
|
return -1;
|
|
}
|
|
|
|
void cpu_ppc_store_decr (CPUState *env, uint32_t value)
|
|
{
|
|
/* TO FIX */
|
|
}
|
|
|
|
void cpu_loop(CPUPPCState *env)
|
|
{
|
|
target_siginfo_t info;
|
|
int trapnr;
|
|
uint32_t ret;
|
|
|
|
for(;;) {
|
|
trapnr = cpu_ppc_exec(env);
|
|
if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
|
|
trapnr != EXCP_TRACE) {
|
|
if (loglevel > 0) {
|
|
cpu_dump_state(env, logfile, fprintf, 0);
|
|
}
|
|
}
|
|
switch(trapnr) {
|
|
case EXCP_NONE:
|
|
break;
|
|
case EXCP_SYSCALL_USER:
|
|
/* system call */
|
|
/* WARNING:
|
|
* PPC ABI uses overflow flag in cr0 to signal an error
|
|
* in syscalls.
|
|
*/
|
|
#if 0
|
|
printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
|
|
env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
|
|
#endif
|
|
env->crf[0] &= ~0x1;
|
|
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
|
|
env->gpr[5], env->gpr[6], env->gpr[7],
|
|
env->gpr[8]);
|
|
if (ret > (uint32_t)(-515)) {
|
|
env->crf[0] |= 0x1;
|
|
ret = -ret;
|
|
}
|
|
env->gpr[3] = ret;
|
|
#if 0
|
|
printf("syscall returned 0x%08x (%d)\n", ret, ret);
|
|
#endif
|
|
break;
|
|
case EXCP_RESET:
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "RESET asked... Stop emulation\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "RESET asked... Stop emulation\n");
|
|
abort();
|
|
case EXCP_MACHINE_CHECK:
|
|
fprintf(stderr, "Machine check exeption... Stop emulation\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "RESET asked... Stop emulation\n");
|
|
info.si_signo = TARGET_SIGBUS;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_BUS_OBJERR;
|
|
info._sifields._sigfault._addr = env->nip - 4;
|
|
queue_signal(info.si_signo, &info);
|
|
case EXCP_DSI:
|
|
fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
|
|
if (loglevel) {
|
|
fprintf(logfile, "Invalid data memory access: 0x%08x\n",
|
|
env->spr[DAR]);
|
|
}
|
|
switch (env->error_code & 0xF) {
|
|
case EXCP_DSI_TRANSLATE:
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_MAPERR;
|
|
break;
|
|
case EXCP_DSI_NOTSUP:
|
|
case EXCP_DSI_EXTERNAL:
|
|
info.si_signo = TARGET_SIGILL;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_ILL_ILLADR;
|
|
break;
|
|
case EXCP_DSI_PROT:
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_ACCERR;
|
|
break;
|
|
case EXCP_DSI_DABR:
|
|
info.si_signo = TARGET_SIGTRAP;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_TRAP_BRKPT;
|
|
break;
|
|
default:
|
|
/* Let's send a regular segfault... */
|
|
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
|
env->error_code);
|
|
if (loglevel) {
|
|
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
|
env->error_code);
|
|
}
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_MAPERR;
|
|
break;
|
|
}
|
|
info._sifields._sigfault._addr = env->nip;
|
|
queue_signal(info.si_signo, &info);
|
|
break;
|
|
case EXCP_ISI:
|
|
fprintf(stderr, "Invalid instruction fetch\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Invalid instruction fetch\n");
|
|
switch (env->error_code) {
|
|
case EXCP_ISI_TRANSLATE:
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_MAPERR;
|
|
break;
|
|
case EXCP_ISI_GUARD:
|
|
info.si_signo = TARGET_SIGILL;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_ILL_ILLADR;
|
|
break;
|
|
case EXCP_ISI_NOEXEC:
|
|
case EXCP_ISI_PROT:
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_ACCERR;
|
|
break;
|
|
default:
|
|
/* Let's send a regular segfault... */
|
|
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
|
env->error_code);
|
|
if (loglevel) {
|
|
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
|
env->error_code);
|
|
}
|
|
info.si_signo = TARGET_SIGSEGV;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_SEGV_MAPERR;
|
|
break;
|
|
}
|
|
info._sifields._sigfault._addr = env->nip - 4;
|
|
queue_signal(info.si_signo, &info);
|
|
break;
|
|
case EXCP_EXTERNAL:
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "External interruption... Stop emulation\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "External interruption... Stop emulation\n");
|
|
abort();
|
|
case EXCP_ALIGN:
|
|
fprintf(stderr, "Invalid unaligned memory access\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Invalid unaligned memory access\n");
|
|
info.si_signo = TARGET_SIGBUS;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_BUS_ADRALN;
|
|
info._sifields._sigfault._addr = env->nip - 4;
|
|
queue_signal(info.si_signo, &info);
|
|
break;
|
|
case EXCP_PROGRAM:
|
|
switch (env->error_code & ~0xF) {
|
|
case EXCP_FP:
|
|
fprintf(stderr, "Program exception\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Program exception\n");
|
|
/* Set FX */
|
|
env->fpscr[7] |= 0x8;
|
|
/* Finally, update FEX */
|
|
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
|
|
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
|
|
env->fpscr[7] |= 0x4;
|
|
info.si_signo = TARGET_SIGFPE;
|
|
info.si_errno = 0;
|
|
switch (env->error_code & 0xF) {
|
|
case EXCP_FP_OX:
|
|
info.si_code = TARGET_FPE_FLTOVF;
|
|
break;
|
|
case EXCP_FP_UX:
|
|
info.si_code = TARGET_FPE_FLTUND;
|
|
break;
|
|
case EXCP_FP_ZX:
|
|
case EXCP_FP_VXZDZ:
|
|
info.si_code = TARGET_FPE_FLTDIV;
|
|
break;
|
|
case EXCP_FP_XX:
|
|
info.si_code = TARGET_FPE_FLTRES;
|
|
break;
|
|
case EXCP_FP_VXSOFT:
|
|
info.si_code = TARGET_FPE_FLTINV;
|
|
break;
|
|
case EXCP_FP_VXNAN:
|
|
case EXCP_FP_VXISI:
|
|
case EXCP_FP_VXIDI:
|
|
case EXCP_FP_VXIMZ:
|
|
case EXCP_FP_VXVC:
|
|
case EXCP_FP_VXSQRT:
|
|
case EXCP_FP_VXCVI:
|
|
info.si_code = TARGET_FPE_FLTSUB;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown floating point exception "
|
|
"(%02x)\n", env->error_code);
|
|
if (loglevel) {
|
|
fprintf(logfile, "Unknown floating point exception "
|
|
"(%02x)\n", env->error_code & 0xF);
|
|
}
|
|
}
|
|
break;
|
|
case EXCP_INVAL:
|
|
fprintf(stderr, "Invalid instruction\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Invalid instruction\n");
|
|
info.si_signo = TARGET_SIGILL;
|
|
info.si_errno = 0;
|
|
switch (env->error_code & 0xF) {
|
|
case EXCP_INVAL_INVAL:
|
|
info.si_code = TARGET_ILL_ILLOPC;
|
|
break;
|
|
case EXCP_INVAL_LSWX:
|
|
info.si_code = TARGET_ILL_ILLOPN;
|
|
break;
|
|
case EXCP_INVAL_SPR:
|
|
info.si_code = TARGET_ILL_PRVREG;
|
|
break;
|
|
case EXCP_INVAL_FP:
|
|
info.si_code = TARGET_ILL_COPROC;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown invalid operation (%02x)\n",
|
|
env->error_code & 0xF);
|
|
if (loglevel) {
|
|
fprintf(logfile, "Unknown invalid operation (%02x)\n",
|
|
env->error_code & 0xF);
|
|
}
|
|
info.si_code = TARGET_ILL_ILLADR;
|
|
break;
|
|
}
|
|
break;
|
|
case EXCP_PRIV:
|
|
fprintf(stderr, "Privilege violation\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Privilege violation\n");
|
|
info.si_signo = TARGET_SIGILL;
|
|
info.si_errno = 0;
|
|
switch (env->error_code & 0xF) {
|
|
case EXCP_PRIV_OPC:
|
|
info.si_code = TARGET_ILL_PRVOPC;
|
|
break;
|
|
case EXCP_PRIV_REG:
|
|
info.si_code = TARGET_ILL_PRVREG;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown privilege violation (%02x)\n",
|
|
env->error_code & 0xF);
|
|
info.si_code = TARGET_ILL_PRVOPC;
|
|
break;
|
|
}
|
|
break;
|
|
case EXCP_TRAP:
|
|
fprintf(stderr, "Tried to call a TRAP\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Tried to call a TRAP\n");
|
|
abort();
|
|
default:
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "Unknown program exception (%02x)\n",
|
|
env->error_code);
|
|
if (loglevel) {
|
|
fprintf(logfile, "Unknwon program exception (%02x)\n",
|
|
env->error_code);
|
|
}
|
|
abort();
|
|
}
|
|
info._sifields._sigfault._addr = env->nip - 4;
|
|
queue_signal(info.si_signo, &info);
|
|
break;
|
|
case EXCP_NO_FP:
|
|
fprintf(stderr, "No floating point allowed\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "No floating point allowed\n");
|
|
info.si_signo = TARGET_SIGILL;
|
|
info.si_errno = 0;
|
|
info.si_code = TARGET_ILL_COPROC;
|
|
info._sifields._sigfault._addr = env->nip - 4;
|
|
queue_signal(info.si_signo, &info);
|
|
break;
|
|
case EXCP_DECR:
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "Decrementer exception\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Decrementer exception\n");
|
|
abort();
|
|
case EXCP_RESA: /* Implementation specific */
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "RESA exception should never happen !\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "RESA exception should never happen !\n");
|
|
abort();
|
|
case EXCP_RESB: /* Implementation specific */
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "RESB exception should never happen !\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "RESB exception should never happen !\n");
|
|
abort();
|
|
case EXCP_TRACE:
|
|
/* Do nothing: we use this to trace execution */
|
|
break;
|
|
case EXCP_FP_ASSIST:
|
|
/* Should not happen ! */
|
|
fprintf(stderr, "Floating point assist exception\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Floating point assist exception\n");
|
|
abort();
|
|
case EXCP_MTMSR:
|
|
/* We reloaded the msr, just go on */
|
|
if (msr_pr == 0) {
|
|
fprintf(stderr, "Tried to go into supervisor mode !\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Tried to go into supervisor mode !\n");
|
|
abort();
|
|
}
|
|
break;
|
|
case EXCP_BRANCH:
|
|
/* We stopped because of a jump... */
|
|
break;
|
|
case EXCP_RFI:
|
|
/* Should not occur: we always are in user mode */
|
|
fprintf(stderr, "Return from interrupt ?\n");
|
|
if (loglevel)
|
|
fprintf(logfile, "Return from interrupt ?\n");
|
|
abort();
|
|
case EXCP_INTERRUPT:
|
|
/* Don't know why this should ever happen... */
|
|
break;
|
|
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(info.si_signo, &info);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
|
trapnr);
|
|
if (loglevel) {
|
|
fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
|
|
"0x%02x - aborting\n", trapnr, env->error_code);
|
|
}
|
|
abort();
|
|
}
|
|
process_pending_signals(env);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void usage(void)
|
|
{
|
|
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
|
|
"usage: qemu-" TARGET_ARCH " [-h] [-g] [-d opts] [-L path] [-s size] program [arguments...]\n"
|
|
"Linux CPU emulator (compiled for %s emulation)\n"
|
|
"\n"
|
|
"-h print this help\n"
|
|
"-g wait gdb connection to port %d\n"
|
|
"-L path set the elf interpreter prefix (default=%s)\n"
|
|
"-s size set the stack size in bytes (default=%ld)\n"
|
|
"\n"
|
|
"debug options:\n"
|
|
#ifdef USE_CODE_COPY
|
|
"-no-code-copy disable code copy acceleration\n"
|
|
#endif
|
|
"-d options activate log (logfile=%s)\n"
|
|
"-p pagesize set the host page size to 'pagesize'\n",
|
|
TARGET_ARCH,
|
|
DEFAULT_GDBSTUB_PORT,
|
|
interp_prefix,
|
|
x86_stack_size,
|
|
DEBUG_LOGFILE);
|
|
_exit(1);
|
|
}
|
|
|
|
/* XXX: currently only used for async signals (see signal.c) */
|
|
CPUState *global_env;
|
|
/* used only if single thread */
|
|
CPUState *cpu_single_env = NULL;
|
|
|
|
/* used to free thread contexts */
|
|
TaskState *first_task_state;
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
const char *filename;
|
|
struct target_pt_regs regs1, *regs = ®s1;
|
|
struct image_info info1, *info = &info1;
|
|
TaskState ts1, *ts = &ts1;
|
|
CPUState *env;
|
|
int optind;
|
|
const char *r;
|
|
int use_gdbstub = 0;
|
|
|
|
if (argc <= 1)
|
|
usage();
|
|
|
|
/* init debug */
|
|
cpu_set_log_filename(DEBUG_LOGFILE);
|
|
|
|
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")) {
|
|
int mask;
|
|
CPULogItem *item;
|
|
|
|
if (optind >= argc)
|
|
break;
|
|
|
|
r = argv[optind++];
|
|
mask = cpu_str_to_log_mask(r);
|
|
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);
|
|
} 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")) {
|
|
use_gdbstub = 1;
|
|
} else
|
|
#ifdef USE_CODE_COPY
|
|
if (!strcmp(r, "no-code-copy")) {
|
|
code_copy_enabled = 0;
|
|
} else
|
|
#endif
|
|
{
|
|
usage();
|
|
}
|
|
}
|
|
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);
|
|
|
|
/* NOTE: we need to init the CPU at this stage to get
|
|
qemu_host_page_size */
|
|
env = cpu_init();
|
|
|
|
if (elf_exec(filename, argv+optind, environ, regs, info) != 0) {
|
|
printf("Error loading %s\n", filename);
|
|
_exit(1);
|
|
}
|
|
|
|
if (loglevel) {
|
|
page_dump(logfile);
|
|
|
|
fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
|
|
fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
|
|
fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
|
|
fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
|
|
fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
|
|
fprintf(logfile, "brk 0x%08lx\n" , info->brk);
|
|
fprintf(logfile, "entry 0x%08lx\n" , info->entry);
|
|
}
|
|
|
|
target_set_brk((char *)info->brk);
|
|
syscall_init();
|
|
signal_init();
|
|
|
|
global_env = env;
|
|
|
|
/* build Task State */
|
|
memset(ts, 0, sizeof(TaskState));
|
|
env->opaque = ts;
|
|
ts->used = 1;
|
|
env->user_mode_only = 1;
|
|
|
|
#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;
|
|
}
|
|
|
|
/* flags setup : we activate the IRQs by default as in user mode */
|
|
env->eflags |= IF_MASK;
|
|
|
|
/* linux register setup */
|
|
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;
|
|
|
|
/* linux interrupt setup */
|
|
env->idt.base = (long)idt_table;
|
|
env->idt.limit = sizeof(idt_table) - 1;
|
|
set_idt(0, 0);
|
|
set_idt(1, 0);
|
|
set_idt(2, 0);
|
|
set_idt(3, 3);
|
|
set_idt(4, 3);
|
|
set_idt(5, 3);
|
|
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 */
|
|
env->gdt.base = (long)gdt_table;
|
|
env->gdt.limit = sizeof(gdt_table) - 1;
|
|
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));
|
|
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_DS, __USER_DS);
|
|
cpu_x86_load_seg(env, R_ES, __USER_DS);
|
|
cpu_x86_load_seg(env, R_SS, __USER_DS);
|
|
cpu_x86_load_seg(env, R_FS, __USER_DS);
|
|
cpu_x86_load_seg(env, R_GS, __USER_DS);
|
|
|
|
#elif defined(TARGET_ARM)
|
|
{
|
|
int i;
|
|
for(i = 0; i < 16; i++) {
|
|
env->regs[i] = regs->uregs[i];
|
|
}
|
|
env->cpsr = regs->uregs[16];
|
|
ts->stack_base = info->start_stack;
|
|
ts->heap_base = info->brk;
|
|
/* This will be filled in on the first SYS_HEAPINFO call. */
|
|
ts->heap_limit = 0;
|
|
}
|
|
#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];
|
|
}
|
|
#elif defined(TARGET_PPC)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 32; i++) {
|
|
if (i != 12 && i != 6 && i != 13)
|
|
env->msr[i] = (regs->msr >> i) & 1;
|
|
}
|
|
env->nip = regs->nip;
|
|
for(i = 0; i < 32; i++) {
|
|
env->gpr[i] = regs->gpr[i];
|
|
}
|
|
}
|
|
#else
|
|
#error unsupported target CPU
|
|
#endif
|
|
|
|
if (use_gdbstub) {
|
|
gdbserver_start (DEFAULT_GDBSTUB_PORT);
|
|
gdb_handlesig(env, 0);
|
|
}
|
|
cpu_loop(env);
|
|
/* never exits */
|
|
return 0;
|
|
}
|