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/*
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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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|
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#include "qemu.h" |
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|
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#define DEBUG_LOGFILE "/tmp/qemu.log" |
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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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|
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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) |
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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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|
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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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|
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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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|
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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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|
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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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#ifdef TARGET_I386
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/***********************************************************/
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/* CPUX86 core interface */
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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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|
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uint64_t gdt_table[6];
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uint64_t idt_table[256];
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|
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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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|
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void cpu_loop(CPUX86State *env)
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{
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int trapnr;
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uint8_t *pc; |
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target_siginfo_t info; |
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|
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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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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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|
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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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|
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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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|
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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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|
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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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insn = ldl((void *)(env->regs[15] - 4)); |
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n = insn & 0xffffff;
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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_SYSCALL_BASE) { |
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/* linux syscall */
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n -= ARM_SYSCALL_BASE; |
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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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0);
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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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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_arm_dump_state(env, stderr, 0);
|
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abort(); |
| 332 |
} |
| 333 |
process_pending_signals(env); |
| 334 |
} |
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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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|
| 343 |
/* WARNING: dealing with register windows _is_ complicated */
|
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static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
| 345 |
{
|
| 346 |
index = (index + cwp * 16) & (16 * NWINDOWS - 1); |
| 347 |
/* wrap handling : if cwp is on the last window, then we use the
|
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registers 'after' the end */
|
| 349 |
if (index < 8 && env->cwp == (NWINDOWS - 1)) |
| 350 |
index += (16 * NWINDOWS);
|
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return index;
|
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} |
| 353 |
|
| 354 |
static inline void save_window_offset(CPUSPARCState *env, int offset) |
| 355 |
{
|
| 356 |
unsigned int new_wim, i, cwp1; |
| 357 |
uint32_t *sp_ptr; |
| 358 |
|
| 359 |
new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) & |
| 360 |
((1LL << NWINDOWS) - 1); |
| 361 |
/* save the window */
|
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cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
|
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sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
| 364 |
#if defined(DEBUG_WIN)
|
| 365 |
printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
|
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(int)sp_ptr, cwp1);
|
| 367 |
#endif
|
| 368 |
for(i = 0; i < 16; i++) |
| 369 |
stl_raw(sp_ptr + i, env->regbase[get_reg_index(env, cwp1, 8 + i)]);
|
| 370 |
env->wim = new_wim; |
| 371 |
} |
| 372 |
|
| 373 |
static void save_window(CPUSPARCState *env) |
| 374 |
{
|
| 375 |
save_window_offset(env, 2);
|
| 376 |
} |
| 377 |
|
| 378 |
static void restore_window(CPUSPARCState *env) |
| 379 |
{
|
| 380 |
unsigned int new_wim, i, cwp1; |
| 381 |
uint32_t *sp_ptr; |
| 382 |
|
| 383 |
new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) & |
| 384 |
((1LL << NWINDOWS) - 1); |
| 385 |
|
| 386 |
/* restore the invalid window */
|
| 387 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
| 388 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
| 389 |
#if defined(DEBUG_WIN)
|
| 390 |
printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
|
| 391 |
(int)sp_ptr, cwp1);
|
| 392 |
#endif
|
| 393 |
for(i = 0; i < 16; i++) |
| 394 |
env->regbase[get_reg_index(env, cwp1, 8 + i)] = ldl_raw(sp_ptr + i);
|
| 395 |
env->wim = new_wim; |
| 396 |
} |
| 397 |
|
| 398 |
static void flush_windows(CPUSPARCState *env) |
| 399 |
{
|
| 400 |
int offset, cwp1;
|
| 401 |
#if defined(DEBUG_WIN)
|
| 402 |
printf("flush_windows:\n");
|
| 403 |
#endif
|
| 404 |
offset = 2;
|
| 405 |
for(;;) {
|
| 406 |
/* if restore would invoke restore_window(), then we can stop */
|
| 407 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
| 408 |
if (env->wim & (1 << cwp1)) |
| 409 |
break;
|
| 410 |
#if defined(DEBUG_WIN)
|
| 411 |
printf("offset=%d: ", offset);
|
| 412 |
#endif
|
| 413 |
save_window_offset(env, offset); |
| 414 |
offset++; |
| 415 |
} |
| 416 |
} |
| 417 |
|
| 418 |
void cpu_loop (CPUSPARCState *env)
|
| 419 |
{
|
| 420 |
int trapnr, ret;
|
| 421 |
|
| 422 |
while (1) { |
| 423 |
trapnr = cpu_sparc_exec (env); |
| 424 |
|
| 425 |
switch (trapnr) {
|
| 426 |
case 0x88: |
| 427 |
case 0x90: |
| 428 |
ret = do_syscall (env, env->gregs[1],
|
| 429 |
env->regwptr[0], env->regwptr[1], |
| 430 |
env->regwptr[2], env->regwptr[3], |
| 431 |
env->regwptr[4], env->regwptr[5]); |
| 432 |
if ((unsigned int)ret >= (unsigned int)(-515)) { |
| 433 |
env->psr |= PSR_CARRY; |
| 434 |
ret = -ret; |
| 435 |
} else {
|
| 436 |
env->psr &= ~PSR_CARRY; |
| 437 |
} |
| 438 |
env->regwptr[0] = ret;
|
| 439 |
/* next instruction */
|
| 440 |
env->pc = env->npc; |
| 441 |
env->npc = env->npc + 4;
|
| 442 |
break;
|
| 443 |
case 0x83: /* flush windows */ |
| 444 |
// flush_windows(env);
|
| 445 |
/* next instruction */
|
| 446 |
env->pc = env->npc; |
| 447 |
env->npc = env->npc + 4;
|
| 448 |
break;
|
| 449 |
case TT_WIN_OVF: /* window overflow */ |
| 450 |
save_window(env); |
| 451 |
break;
|
| 452 |
case TT_WIN_UNF: /* window underflow */ |
| 453 |
restore_window(env); |
| 454 |
break;
|
| 455 |
default:
|
| 456 |
printf ("Unhandled trap: 0x%x\n", trapnr);
|
| 457 |
cpu_sparc_dump_state(env, stderr, 0);
|
| 458 |
exit (1);
|
| 459 |
} |
| 460 |
process_pending_signals (env); |
| 461 |
} |
| 462 |
} |
| 463 |
|
| 464 |
#endif
|
| 465 |
|
| 466 |
#ifdef TARGET_PPC
|
| 467 |
void cpu_loop(CPUPPCState *env)
|
| 468 |
{
|
| 469 |
target_siginfo_t info; |
| 470 |
int trapnr;
|
| 471 |
uint32_t ret; |
| 472 |
|
| 473 |
for(;;) {
|
| 474 |
trapnr = cpu_ppc_exec(env); |
| 475 |
if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
|
| 476 |
trapnr != EXCP_TRACE) {
|
| 477 |
if (loglevel > 0) { |
| 478 |
cpu_ppc_dump_state(env, logfile, 0);
|
| 479 |
} |
| 480 |
} |
| 481 |
switch(trapnr) {
|
| 482 |
case EXCP_NONE:
|
| 483 |
break;
|
| 484 |
case EXCP_SYSCALL_USER:
|
| 485 |
/* system call */
|
| 486 |
/* WARNING:
|
| 487 |
* PPC ABI uses overflow flag in cr0 to signal an error
|
| 488 |
* in syscalls.
|
| 489 |
*/
|
| 490 |
#if 0
|
| 491 |
printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
|
| 492 |
env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
|
| 493 |
#endif
|
| 494 |
env->crf[0] &= ~0x1; |
| 495 |
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
| 496 |
env->gpr[5], env->gpr[6], env->gpr[7], |
| 497 |
env->gpr[8]);
|
| 498 |
if (ret > (uint32_t)(-515)) { |
| 499 |
env->crf[0] |= 0x1; |
| 500 |
ret = -ret; |
| 501 |
} |
| 502 |
env->gpr[3] = ret;
|
| 503 |
#if 0
|
| 504 |
printf("syscall returned 0x%08x (%d)\n", ret, ret);
|
| 505 |
#endif
|
| 506 |
break;
|
| 507 |
case EXCP_RESET:
|
| 508 |
/* Should not happen ! */
|
| 509 |
fprintf(stderr, "RESET asked... Stop emulation\n");
|
| 510 |
if (loglevel)
|
| 511 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
| 512 |
abort(); |
| 513 |
case EXCP_MACHINE_CHECK:
|
| 514 |
fprintf(stderr, "Machine check exeption... Stop emulation\n");
|
| 515 |
if (loglevel)
|
| 516 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
| 517 |
info.si_signo = TARGET_SIGBUS; |
| 518 |
info.si_errno = 0;
|
| 519 |
info.si_code = TARGET_BUS_OBJERR; |
| 520 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 521 |
queue_signal(info.si_signo, &info); |
| 522 |
case EXCP_DSI:
|
| 523 |
fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
|
| 524 |
if (loglevel) {
|
| 525 |
fprintf(logfile, "Invalid data memory access: 0x%08x\n",
|
| 526 |
env->spr[DAR]); |
| 527 |
} |
| 528 |
switch (env->error_code & 0xF) { |
| 529 |
case EXCP_DSI_TRANSLATE:
|
| 530 |
info.si_signo = TARGET_SIGSEGV; |
| 531 |
info.si_errno = 0;
|
| 532 |
info.si_code = TARGET_SEGV_MAPERR; |
| 533 |
break;
|
| 534 |
case EXCP_DSI_NOTSUP:
|
| 535 |
case EXCP_DSI_EXTERNAL:
|
| 536 |
info.si_signo = TARGET_SIGILL; |
| 537 |
info.si_errno = 0;
|
| 538 |
info.si_code = TARGET_ILL_ILLADR; |
| 539 |
break;
|
| 540 |
case EXCP_DSI_PROT:
|
| 541 |
info.si_signo = TARGET_SIGSEGV; |
| 542 |
info.si_errno = 0;
|
| 543 |
info.si_code = TARGET_SEGV_ACCERR; |
| 544 |
break;
|
| 545 |
case EXCP_DSI_DABR:
|
| 546 |
info.si_signo = TARGET_SIGTRAP; |
| 547 |
info.si_errno = 0;
|
| 548 |
info.si_code = TARGET_TRAP_BRKPT; |
| 549 |
break;
|
| 550 |
default:
|
| 551 |
/* Let's send a regular segfault... */
|
| 552 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
| 553 |
env->error_code); |
| 554 |
if (loglevel) {
|
| 555 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
| 556 |
env->error_code); |
| 557 |
} |
| 558 |
info.si_signo = TARGET_SIGSEGV; |
| 559 |
info.si_errno = 0;
|
| 560 |
info.si_code = TARGET_SEGV_MAPERR; |
| 561 |
break;
|
| 562 |
} |
| 563 |
info._sifields._sigfault._addr = env->nip; |
| 564 |
queue_signal(info.si_signo, &info); |
| 565 |
break;
|
| 566 |
case EXCP_ISI:
|
| 567 |
fprintf(stderr, "Invalid instruction fetch\n");
|
| 568 |
if (loglevel)
|
| 569 |
fprintf(logfile, "Invalid instruction fetch\n");
|
| 570 |
switch (env->error_code) {
|
| 571 |
case EXCP_ISI_TRANSLATE:
|
| 572 |
info.si_signo = TARGET_SIGSEGV; |
| 573 |
info.si_errno = 0;
|
| 574 |
info.si_code = TARGET_SEGV_MAPERR; |
| 575 |
break;
|
| 576 |
case EXCP_ISI_GUARD:
|
| 577 |
info.si_signo = TARGET_SIGILL; |
| 578 |
info.si_errno = 0;
|
| 579 |
info.si_code = TARGET_ILL_ILLADR; |
| 580 |
break;
|
| 581 |
case EXCP_ISI_NOEXEC:
|
| 582 |
case EXCP_ISI_PROT:
|
| 583 |
info.si_signo = TARGET_SIGSEGV; |
| 584 |
info.si_errno = 0;
|
| 585 |
info.si_code = TARGET_SEGV_ACCERR; |
| 586 |
break;
|
| 587 |
default:
|
| 588 |
/* Let's send a regular segfault... */
|
| 589 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
| 590 |
env->error_code); |
| 591 |
if (loglevel) {
|
| 592 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
| 593 |
env->error_code); |
| 594 |
} |
| 595 |
info.si_signo = TARGET_SIGSEGV; |
| 596 |
info.si_errno = 0;
|
| 597 |
info.si_code = TARGET_SEGV_MAPERR; |
| 598 |
break;
|
| 599 |
} |
| 600 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 601 |
queue_signal(info.si_signo, &info); |
| 602 |
break;
|
| 603 |
case EXCP_EXTERNAL:
|
| 604 |
/* Should not happen ! */
|
| 605 |
fprintf(stderr, "External interruption... Stop emulation\n");
|
| 606 |
if (loglevel)
|
| 607 |
fprintf(logfile, "External interruption... Stop emulation\n");
|
| 608 |
abort(); |
| 609 |
case EXCP_ALIGN:
|
| 610 |
fprintf(stderr, "Invalid unaligned memory access\n");
|
| 611 |
if (loglevel)
|
| 612 |
fprintf(logfile, "Invalid unaligned memory access\n");
|
| 613 |
info.si_signo = TARGET_SIGBUS; |
| 614 |
info.si_errno = 0;
|
| 615 |
info.si_code = TARGET_BUS_ADRALN; |
| 616 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 617 |
queue_signal(info.si_signo, &info); |
| 618 |
break;
|
| 619 |
case EXCP_PROGRAM:
|
| 620 |
switch (env->error_code & ~0xF) { |
| 621 |
case EXCP_FP:
|
| 622 |
fprintf(stderr, "Program exception\n");
|
| 623 |
if (loglevel)
|
| 624 |
fprintf(logfile, "Program exception\n");
|
| 625 |
/* Set FX */
|
| 626 |
env->fpscr[7] |= 0x8; |
| 627 |
/* Finally, update FEX */
|
| 628 |
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
| 629 |
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
| 630 |
env->fpscr[7] |= 0x4; |
| 631 |
info.si_signo = TARGET_SIGFPE; |
| 632 |
info.si_errno = 0;
|
| 633 |
switch (env->error_code & 0xF) { |
| 634 |
case EXCP_FP_OX:
|
| 635 |
info.si_code = TARGET_FPE_FLTOVF; |
| 636 |
break;
|
| 637 |
case EXCP_FP_UX:
|
| 638 |
info.si_code = TARGET_FPE_FLTUND; |
| 639 |
break;
|
| 640 |
case EXCP_FP_ZX:
|
| 641 |
case EXCP_FP_VXZDZ:
|
| 642 |
info.si_code = TARGET_FPE_FLTDIV; |
| 643 |
break;
|
| 644 |
case EXCP_FP_XX:
|
| 645 |
info.si_code = TARGET_FPE_FLTRES; |
| 646 |
break;
|
| 647 |
case EXCP_FP_VXSOFT:
|
| 648 |
info.si_code = TARGET_FPE_FLTINV; |
| 649 |
break;
|
| 650 |
case EXCP_FP_VXNAN:
|
| 651 |
case EXCP_FP_VXISI:
|
| 652 |
case EXCP_FP_VXIDI:
|
| 653 |
case EXCP_FP_VXIMZ:
|
| 654 |
case EXCP_FP_VXVC:
|
| 655 |
case EXCP_FP_VXSQRT:
|
| 656 |
case EXCP_FP_VXCVI:
|
| 657 |
info.si_code = TARGET_FPE_FLTSUB; |
| 658 |
break;
|
| 659 |
default:
|
| 660 |
fprintf(stderr, "Unknown floating point exception "
|
| 661 |
"(%02x)\n", env->error_code);
|
| 662 |
if (loglevel) {
|
| 663 |
fprintf(logfile, "Unknown floating point exception "
|
| 664 |
"(%02x)\n", env->error_code & 0xF); |
| 665 |
} |
| 666 |
} |
| 667 |
break;
|
| 668 |
case EXCP_INVAL:
|
| 669 |
fprintf(stderr, "Invalid instruction\n");
|
| 670 |
if (loglevel)
|
| 671 |
fprintf(logfile, "Invalid instruction\n");
|
| 672 |
info.si_signo = TARGET_SIGILL; |
| 673 |
info.si_errno = 0;
|
| 674 |
switch (env->error_code & 0xF) { |
| 675 |
case EXCP_INVAL_INVAL:
|
| 676 |
info.si_code = TARGET_ILL_ILLOPC; |
| 677 |
break;
|
| 678 |
case EXCP_INVAL_LSWX:
|
| 679 |
info.si_code = TARGET_ILL_ILLOPN; |
| 680 |
break;
|
| 681 |
case EXCP_INVAL_SPR:
|
| 682 |
info.si_code = TARGET_ILL_PRVREG; |
| 683 |
break;
|
| 684 |
case EXCP_INVAL_FP:
|
| 685 |
info.si_code = TARGET_ILL_COPROC; |
| 686 |
break;
|
| 687 |
default:
|
| 688 |
fprintf(stderr, "Unknown invalid operation (%02x)\n",
|
| 689 |
env->error_code & 0xF);
|
| 690 |
if (loglevel) {
|
| 691 |
fprintf(logfile, "Unknown invalid operation (%02x)\n",
|
| 692 |
env->error_code & 0xF);
|
| 693 |
} |
| 694 |
info.si_code = TARGET_ILL_ILLADR; |
| 695 |
break;
|
| 696 |
} |
| 697 |
break;
|
| 698 |
case EXCP_PRIV:
|
| 699 |
fprintf(stderr, "Privilege violation\n");
|
| 700 |
if (loglevel)
|
| 701 |
fprintf(logfile, "Privilege violation\n");
|
| 702 |
info.si_signo = TARGET_SIGILL; |
| 703 |
info.si_errno = 0;
|
| 704 |
switch (env->error_code & 0xF) { |
| 705 |
case EXCP_PRIV_OPC:
|
| 706 |
info.si_code = TARGET_ILL_PRVOPC; |
| 707 |
break;
|
| 708 |
case EXCP_PRIV_REG:
|
| 709 |
info.si_code = TARGET_ILL_PRVREG; |
| 710 |
break;
|
| 711 |
default:
|
| 712 |
fprintf(stderr, "Unknown privilege violation (%02x)\n",
|
| 713 |
env->error_code & 0xF);
|
| 714 |
info.si_code = TARGET_ILL_PRVOPC; |
| 715 |
break;
|
| 716 |
} |
| 717 |
break;
|
| 718 |
case EXCP_TRAP:
|
| 719 |
fprintf(stderr, "Tried to call a TRAP\n");
|
| 720 |
if (loglevel)
|
| 721 |
fprintf(logfile, "Tried to call a TRAP\n");
|
| 722 |
abort(); |
| 723 |
default:
|
| 724 |
/* Should not happen ! */
|
| 725 |
fprintf(stderr, "Unknown program exception (%02x)\n",
|
| 726 |
env->error_code); |
| 727 |
if (loglevel) {
|
| 728 |
fprintf(logfile, "Unknwon program exception (%02x)\n",
|
| 729 |
env->error_code); |
| 730 |
} |
| 731 |
abort(); |
| 732 |
} |
| 733 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 734 |
queue_signal(info.si_signo, &info); |
| 735 |
break;
|
| 736 |
case EXCP_NO_FP:
|
| 737 |
fprintf(stderr, "No floating point allowed\n");
|
| 738 |
if (loglevel)
|
| 739 |
fprintf(logfile, "No floating point allowed\n");
|
| 740 |
info.si_signo = TARGET_SIGILL; |
| 741 |
info.si_errno = 0;
|
| 742 |
info.si_code = TARGET_ILL_COPROC; |
| 743 |
info._sifields._sigfault._addr = env->nip - 4;
|
| 744 |
queue_signal(info.si_signo, &info); |
| 745 |
break;
|
| 746 |
case EXCP_DECR:
|
| 747 |
/* Should not happen ! */
|
| 748 |
fprintf(stderr, "Decrementer exception\n");
|
| 749 |
if (loglevel)
|
| 750 |
fprintf(logfile, "Decrementer exception\n");
|
| 751 |
abort(); |
| 752 |
case EXCP_RESA: /* Implementation specific */ |
| 753 |
/* Should not happen ! */
|
| 754 |
fprintf(stderr, "RESA exception should never happen !\n");
|
| 755 |
if (loglevel)
|
| 756 |
fprintf(logfile, "RESA exception should never happen !\n");
|
| 757 |
abort(); |
| 758 |
case EXCP_RESB: /* Implementation specific */ |
| 759 |
/* Should not happen ! */
|
| 760 |
fprintf(stderr, "RESB exception should never happen !\n");
|
| 761 |
if (loglevel)
|
| 762 |
fprintf(logfile, "RESB exception should never happen !\n");
|
| 763 |
abort(); |
| 764 |
case EXCP_TRACE:
|
| 765 |
/* Do nothing: we use this to trace execution */
|
| 766 |
break;
|
| 767 |
case EXCP_FP_ASSIST:
|
| 768 |
/* Should not happen ! */
|
| 769 |
fprintf(stderr, "Floating point assist exception\n");
|
| 770 |
if (loglevel)
|
| 771 |
fprintf(logfile, "Floating point assist exception\n");
|
| 772 |
abort(); |
| 773 |
case EXCP_MTMSR:
|
| 774 |
/* We reloaded the msr, just go on */
|
| 775 |
if (msr_pr) {
|
| 776 |
fprintf(stderr, "Tried to go into supervisor mode !\n");
|
| 777 |
if (loglevel)
|
| 778 |
fprintf(logfile, "Tried to go into supervisor mode !\n");
|
| 779 |
abort(); |
| 780 |
} |
| 781 |
break;
|
| 782 |
case EXCP_BRANCH:
|
| 783 |
/* We stopped because of a jump... */
|
| 784 |
break;
|
| 785 |
case EXCP_RFI:
|
| 786 |
/* Should not occur: we always are in user mode */
|
| 787 |
fprintf(stderr, "Return from interrupt ?\n");
|
| 788 |
if (loglevel)
|
| 789 |
fprintf(logfile, "Return from interrupt ?\n");
|
| 790 |
abort(); |
| 791 |
case EXCP_INTERRUPT:
|
| 792 |
/* Don't know why this should ever happen... */
|
| 793 |
break;
|
| 794 |
case EXCP_DEBUG:
|
| 795 |
break;
|
| 796 |
default:
|
| 797 |
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
| 798 |
trapnr); |
| 799 |
if (loglevel) {
|
| 800 |
fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
|
| 801 |
"0x%02x - aborting\n", trapnr, env->error_code);
|
| 802 |
} |
| 803 |
abort(); |
| 804 |
} |
| 805 |
if (trapnr < EXCP_PPC_MAX)
|
| 806 |
env->exceptions &= ~(1 << trapnr);
|
| 807 |
process_pending_signals(env); |
| 808 |
if (env->exceptions != 0) { |
| 809 |
check_exception_state(env); |
| 810 |
} |
| 811 |
} |
| 812 |
} |
| 813 |
#endif
|
| 814 |
|
| 815 |
void usage(void) |
| 816 |
{
|
| 817 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" |
| 818 |
"usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" |
| 819 |
"Linux CPU emulator (compiled for %s emulation)\n"
|
| 820 |
"\n"
|
| 821 |
"-h print this help\n"
|
| 822 |
"-L path set the elf interpreter prefix (default=%s)\n"
|
| 823 |
"-s size set the stack size in bytes (default=%ld)\n"
|
| 824 |
"\n"
|
| 825 |
"debug options:\n"
|
| 826 |
#ifdef USE_CODE_COPY
|
| 827 |
"-no-code-copy disable code copy acceleration\n"
|
| 828 |
#endif
|
| 829 |
"-d options activate log (logfile=%s)\n"
|
| 830 |
"-p pagesize set the host page size to 'pagesize'\n",
|
| 831 |
TARGET_ARCH, |
| 832 |
interp_prefix, |
| 833 |
x86_stack_size, |
| 834 |
DEBUG_LOGFILE); |
| 835 |
_exit(1);
|
| 836 |
} |
| 837 |
|
| 838 |
/* XXX: currently only used for async signals (see signal.c) */
|
| 839 |
CPUState *global_env; |
| 840 |
/* used only if single thread */
|
| 841 |
CPUState *cpu_single_env = NULL;
|
| 842 |
|
| 843 |
/* used to free thread contexts */
|
| 844 |
TaskState *first_task_state; |
| 845 |
|
| 846 |
int main(int argc, char **argv) |
| 847 |
{
|
| 848 |
const char *filename; |
| 849 |
struct target_pt_regs regs1, *regs = ®s1;
|
| 850 |
struct image_info info1, *info = &info1;
|
| 851 |
TaskState ts1, *ts = &ts1; |
| 852 |
CPUState *env; |
| 853 |
int optind;
|
| 854 |
const char *r; |
| 855 |
|
| 856 |
if (argc <= 1) |
| 857 |
usage(); |
| 858 |
|
| 859 |
/* init debug */
|
| 860 |
cpu_set_log_filename(DEBUG_LOGFILE); |
| 861 |
|
| 862 |
optind = 1;
|
| 863 |
for(;;) {
|
| 864 |
if (optind >= argc)
|
| 865 |
break;
|
| 866 |
r = argv[optind]; |
| 867 |
if (r[0] != '-') |
| 868 |
break;
|
| 869 |
optind++; |
| 870 |
r++; |
| 871 |
if (!strcmp(r, "-")) { |
| 872 |
break;
|
| 873 |
} else if (!strcmp(r, "d")) { |
| 874 |
int mask;
|
| 875 |
CPULogItem *item; |
| 876 |
|
| 877 |
if (optind >= argc)
|
| 878 |
break;
|
| 879 |
|
| 880 |
r = argv[optind++]; |
| 881 |
mask = cpu_str_to_log_mask(r); |
| 882 |
if (!mask) {
|
| 883 |
printf("Log items (comma separated):\n");
|
| 884 |
for(item = cpu_log_items; item->mask != 0; item++) { |
| 885 |
printf("%-10s %s\n", item->name, item->help);
|
| 886 |
} |
| 887 |
exit(1);
|
| 888 |
} |
| 889 |
cpu_set_log(mask); |
| 890 |
} else if (!strcmp(r, "s")) { |
| 891 |
r = argv[optind++]; |
| 892 |
x86_stack_size = strtol(r, (char **)&r, 0); |
| 893 |
if (x86_stack_size <= 0) |
| 894 |
usage(); |
| 895 |
if (*r == 'M') |
| 896 |
x86_stack_size *= 1024 * 1024; |
| 897 |
else if (*r == 'k' || *r == 'K') |
| 898 |
x86_stack_size *= 1024;
|
| 899 |
} else if (!strcmp(r, "L")) { |
| 900 |
interp_prefix = argv[optind++]; |
| 901 |
} else if (!strcmp(r, "p")) { |
| 902 |
host_page_size = atoi(argv[optind++]); |
| 903 |
if (host_page_size == 0 || |
| 904 |
(host_page_size & (host_page_size - 1)) != 0) { |
| 905 |
fprintf(stderr, "page size must be a power of two\n");
|
| 906 |
exit(1);
|
| 907 |
} |
| 908 |
} else
|
| 909 |
#ifdef USE_CODE_COPY
|
| 910 |
if (!strcmp(r, "no-code-copy")) { |
| 911 |
code_copy_enabled = 0;
|
| 912 |
} else
|
| 913 |
#endif
|
| 914 |
{
|
| 915 |
usage(); |
| 916 |
} |
| 917 |
} |
| 918 |
if (optind >= argc)
|
| 919 |
usage(); |
| 920 |
filename = argv[optind]; |
| 921 |
|
| 922 |
/* Zero out regs */
|
| 923 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
| 924 |
|
| 925 |
/* Zero out image_info */
|
| 926 |
memset(info, 0, sizeof(struct image_info)); |
| 927 |
|
| 928 |
/* Scan interp_prefix dir for replacement files. */
|
| 929 |
init_paths(interp_prefix); |
| 930 |
|
| 931 |
/* NOTE: we need to init the CPU at this stage to get the
|
| 932 |
host_page_size */
|
| 933 |
env = cpu_init(); |
| 934 |
|
| 935 |
if (elf_exec(filename, argv+optind, environ, regs, info) != 0) { |
| 936 |
printf("Error loading %s\n", filename);
|
| 937 |
_exit(1);
|
| 938 |
} |
| 939 |
|
| 940 |
if (loglevel) {
|
| 941 |
page_dump(logfile); |
| 942 |
|
| 943 |
fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
|
| 944 |
fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
|
| 945 |
fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
|
| 946 |
fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
|
| 947 |
fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
|
| 948 |
fprintf(logfile, "brk 0x%08lx\n" , info->brk);
|
| 949 |
fprintf(logfile, "entry 0x%08lx\n" , info->entry);
|
| 950 |
} |
| 951 |
|
| 952 |
target_set_brk((char *)info->brk);
|
| 953 |
syscall_init(); |
| 954 |
signal_init(); |
| 955 |
|
| 956 |
global_env = env; |
| 957 |
|
| 958 |
/* build Task State */
|
| 959 |
memset(ts, 0, sizeof(TaskState)); |
| 960 |
env->opaque = ts; |
| 961 |
ts->used = 1;
|
| 962 |
env->user_mode_only = 1;
|
| 963 |
|
| 964 |
#if defined(TARGET_I386)
|
| 965 |
cpu_x86_set_cpl(env, 3);
|
| 966 |
|
| 967 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
| 968 |
env->hflags |= HF_PE_MASK; |
| 969 |
|
| 970 |
/* flags setup : we activate the IRQs by default as in user mode */
|
| 971 |
env->eflags |= IF_MASK; |
| 972 |
|
| 973 |
/* linux register setup */
|
| 974 |
env->regs[R_EAX] = regs->eax; |
| 975 |
env->regs[R_EBX] = regs->ebx; |
| 976 |
env->regs[R_ECX] = regs->ecx; |
| 977 |
env->regs[R_EDX] = regs->edx; |
| 978 |
env->regs[R_ESI] = regs->esi; |
| 979 |
env->regs[R_EDI] = regs->edi; |
| 980 |
env->regs[R_EBP] = regs->ebp; |
| 981 |
env->regs[R_ESP] = regs->esp; |
| 982 |
env->eip = regs->eip; |
| 983 |
|
| 984 |
/* linux interrupt setup */
|
| 985 |
env->idt.base = (void *)idt_table;
|
| 986 |
env->idt.limit = sizeof(idt_table) - 1; |
| 987 |
set_idt(0, 0); |
| 988 |
set_idt(1, 0); |
| 989 |
set_idt(2, 0); |
| 990 |
set_idt(3, 3); |
| 991 |
set_idt(4, 3); |
| 992 |
set_idt(5, 3); |
| 993 |
set_idt(6, 0); |
| 994 |
set_idt(7, 0); |
| 995 |
set_idt(8, 0); |
| 996 |
set_idt(9, 0); |
| 997 |
set_idt(10, 0); |
| 998 |
set_idt(11, 0); |
| 999 |
set_idt(12, 0); |
| 1000 |
set_idt(13, 0); |
| 1001 |
set_idt(14, 0); |
| 1002 |
set_idt(15, 0); |
| 1003 |
set_idt(16, 0); |
| 1004 |
set_idt(17, 0); |
| 1005 |
set_idt(18, 0); |
| 1006 |
set_idt(19, 0); |
| 1007 |
set_idt(0x80, 3); |
| 1008 |
|
| 1009 |
/* linux segment setup */
|
| 1010 |
env->gdt.base = (void *)gdt_table;
|
| 1011 |
env->gdt.limit = sizeof(gdt_table) - 1; |
| 1012 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
| 1013 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1014 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| 1015 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
| 1016 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 1017 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
| 1018 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
| 1019 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
| 1020 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
| 1021 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
| 1022 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
| 1023 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
| 1024 |
|
| 1025 |
#elif defined(TARGET_ARM)
|
| 1026 |
{
|
| 1027 |
int i;
|
| 1028 |
for(i = 0; i < 16; i++) { |
| 1029 |
env->regs[i] = regs->uregs[i]; |
| 1030 |
} |
| 1031 |
env->cpsr = regs->uregs[16];
|
| 1032 |
} |
| 1033 |
#elif defined(TARGET_SPARC)
|
| 1034 |
{
|
| 1035 |
int i;
|
| 1036 |
env->pc = regs->pc; |
| 1037 |
env->npc = regs->npc; |
| 1038 |
env->y = regs->y; |
| 1039 |
for(i = 0; i < 8; i++) |
| 1040 |
env->gregs[i] = regs->u_regs[i]; |
| 1041 |
for(i = 0; i < 8; i++) |
| 1042 |
env->regwptr[i] = regs->u_regs[i + 8];
|
| 1043 |
} |
| 1044 |
#elif defined(TARGET_PPC)
|
| 1045 |
{
|
| 1046 |
int i;
|
| 1047 |
for (i = 0; i < 32; i++) { |
| 1048 |
if (i != 12 && i != 6) |
| 1049 |
env->msr[i] = (regs->msr >> i) & 1;
|
| 1050 |
} |
| 1051 |
env->nip = regs->nip; |
| 1052 |
for(i = 0; i < 32; i++) { |
| 1053 |
env->gpr[i] = regs->gpr[i]; |
| 1054 |
} |
| 1055 |
} |
| 1056 |
#else
|
| 1057 |
#error unsupported target CPU
|
| 1058 |
#endif
|
| 1059 |
|
| 1060 |
cpu_loop(env); |
| 1061 |
/* never exits */
|
| 1062 |
return 0; |
| 1063 |
} |