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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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#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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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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|
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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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|
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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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#ifdef TARGET_I386
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/***********************************************************/
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/* CPUX86 core interface */
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int cpu_x86_get_pic_interrupt(CPUState *env)
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{ |
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return -1; |
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} |
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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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} |
135 |
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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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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); |
188 |
} 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); |
201 |
} 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; |
207 |
} 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); |
232 |
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(); |
241 |
} |
242 |
process_pending_signals(env); |
243 |
} |
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} |
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#endif
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#ifdef TARGET_ARM
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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; |
254 |
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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; |
262 |
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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); |
273 |
} else {
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/* increment PC */
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env->regs[15] += 4; |
276 |
} |
277 |
} |
278 |
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)); |
283 |
n = insn & 0xffffff;
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if (n >= ARM_SYSCALL_BASE) {
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/* linux syscall */
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n -= ARM_SYSCALL_BASE; |
287 |
env->regs[0] = do_syscall(env,
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n, |
289 |
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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} |
298 |
} |
299 |
break;
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300 |
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); |
307 |
cpu_arm_dump_state(env, stderr, 0);
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abort(); |
309 |
} |
310 |
process_pending_signals(env); |
311 |
} |
312 |
} |
313 |
|
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#endif
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315 |
|
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#ifdef TARGET_SPARC
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317 |
|
318 |
//#define DEBUG_WIN
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319 |
|
320 |
/* WARNING: dealing with register windows _is_ complicated */
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static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) |
322 |
{ |
323 |
index = (index + cwp * 16) & (16 * NWINDOWS - 1); |
324 |
/* 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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326 |
if (index < 8 && env->cwp == (NWINDOWS - 1)) |
327 |
index += (16 * NWINDOWS);
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328 |
return index;
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329 |
} |
330 |
|
331 |
static inline void save_window_offset(CPUSPARCState *env, int offset) |
332 |
{ |
333 |
unsigned int new_wim, i, cwp1; |
334 |
uint32_t *sp_ptr; |
335 |
|
336 |
new_wim = ((env->wim >> 1) | (env->wim << (NWINDOWS - 1))) & |
337 |
((1LL << NWINDOWS) - 1); |
338 |
/* save the window */
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339 |
cwp1 = (env->cwp + offset) & (NWINDOWS - 1);
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340 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
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341 |
#if defined(DEBUG_WIN)
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342 |
printf("win_overflow: sp_ptr=0x%x save_cwp=%d\n",
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343 |
(int)sp_ptr, cwp1);
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344 |
#endif
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345 |
for(i = 0; i < 16; i++) |
346 |
stl_raw(sp_ptr + i, env->regbase[get_reg_index(env, cwp1, 8 + i)]);
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347 |
env->wim = new_wim; |
348 |
} |
349 |
|
350 |
static void save_window(CPUSPARCState *env) |
351 |
{ |
352 |
save_window_offset(env, 2);
|
353 |
} |
354 |
|
355 |
static void restore_window(CPUSPARCState *env) |
356 |
{ |
357 |
unsigned int new_wim, i, cwp1; |
358 |
uint32_t *sp_ptr; |
359 |
|
360 |
new_wim = ((env->wim << 1) | (env->wim >> (NWINDOWS - 1))) & |
361 |
((1LL << NWINDOWS) - 1); |
362 |
|
363 |
/* restore the invalid window */
|
364 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
365 |
sp_ptr = (uint32_t *)(env->regbase[get_reg_index(env, cwp1, 6)]);
|
366 |
#if defined(DEBUG_WIN)
|
367 |
printf("win_underflow: sp_ptr=0x%x load_cwp=%d\n",
|
368 |
(int)sp_ptr, cwp1);
|
369 |
#endif
|
370 |
for(i = 0; i < 16; i++) |
371 |
env->regbase[get_reg_index(env, cwp1, 8 + i)] = ldl_raw(sp_ptr + i);
|
372 |
env->wim = new_wim; |
373 |
} |
374 |
|
375 |
static void flush_windows(CPUSPARCState *env) |
376 |
{ |
377 |
int offset, cwp1;
|
378 |
#if defined(DEBUG_WIN)
|
379 |
printf("flush_windows:\n");
|
380 |
#endif
|
381 |
offset = 2;
|
382 |
for(;;) {
|
383 |
/* if restore would invoke restore_window(), then we can stop */
|
384 |
cwp1 = (env->cwp + 1) & (NWINDOWS - 1); |
385 |
if (env->wim & (1 << cwp1)) |
386 |
break;
|
387 |
#if defined(DEBUG_WIN)
|
388 |
printf("offset=%d: ", offset);
|
389 |
#endif
|
390 |
save_window_offset(env, offset); |
391 |
offset++; |
392 |
} |
393 |
} |
394 |
|
395 |
void cpu_loop (CPUSPARCState *env)
|
396 |
{ |
397 |
int trapnr, ret;
|
398 |
|
399 |
while (1) { |
400 |
trapnr = cpu_sparc_exec (env); |
401 |
|
402 |
switch (trapnr) {
|
403 |
case 0x88: |
404 |
case 0x90: |
405 |
ret = do_syscall (env, env->gregs[1],
|
406 |
env->regwptr[0], env->regwptr[1], |
407 |
env->regwptr[2], env->regwptr[3], |
408 |
env->regwptr[4], env->regwptr[5]); |
409 |
if ((unsigned int)ret >= (unsigned int)(-515)) { |
410 |
env->psr |= PSR_CARRY; |
411 |
ret = -ret; |
412 |
} else {
|
413 |
env->psr &= ~PSR_CARRY; |
414 |
} |
415 |
env->regwptr[0] = ret;
|
416 |
/* next instruction */
|
417 |
env->pc = env->npc; |
418 |
env->npc = env->npc + 4;
|
419 |
break;
|
420 |
case 0x83: /* flush windows */ |
421 |
// flush_windows(env);
|
422 |
/* next instruction */
|
423 |
env->pc = env->npc; |
424 |
env->npc = env->npc + 4;
|
425 |
break;
|
426 |
case TT_WIN_OVF: /* window overflow */ |
427 |
save_window(env); |
428 |
break;
|
429 |
case TT_WIN_UNF: /* window underflow */ |
430 |
restore_window(env); |
431 |
break;
|
432 |
default:
|
433 |
printf ("Unhandled trap: 0x%x\n", trapnr);
|
434 |
cpu_sparc_dump_state(env, stderr, 0);
|
435 |
exit (1);
|
436 |
} |
437 |
process_pending_signals (env); |
438 |
} |
439 |
} |
440 |
|
441 |
#endif
|
442 |
|
443 |
#ifdef TARGET_PPC
|
444 |
|
445 |
void cpu_loop(CPUPPCState *env)
|
446 |
{ |
447 |
target_siginfo_t info; |
448 |
int trapnr;
|
449 |
uint32_t ret; |
450 |
|
451 |
for(;;) {
|
452 |
trapnr = cpu_ppc_exec(env); |
453 |
if (trapnr != EXCP_SYSCALL_USER && trapnr != EXCP_BRANCH &&
|
454 |
trapnr != EXCP_TRACE) { |
455 |
if (loglevel > 0) { |
456 |
cpu_ppc_dump_state(env, logfile, 0);
|
457 |
} |
458 |
} |
459 |
switch(trapnr) {
|
460 |
case EXCP_NONE:
|
461 |
break;
|
462 |
case EXCP_SYSCALL_USER:
|
463 |
/* system call */
|
464 |
/* WARNING:
|
465 |
* PPC ABI uses overflow flag in cr0 to signal an error
|
466 |
* in syscalls.
|
467 |
*/
|
468 |
#if 0
|
469 |
printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
|
470 |
env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
|
471 |
#endif
|
472 |
env->crf[0] &= ~0x1; |
473 |
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
474 |
env->gpr[5], env->gpr[6], env->gpr[7], |
475 |
env->gpr[8]);
|
476 |
if (ret > (uint32_t)(-515)) { |
477 |
env->crf[0] |= 0x1; |
478 |
ret = -ret; |
479 |
} |
480 |
env->gpr[3] = ret;
|
481 |
#if 0
|
482 |
printf("syscall returned 0x%08x (%d)\n", ret, ret);
|
483 |
#endif
|
484 |
break;
|
485 |
case EXCP_RESET:
|
486 |
/* Should not happen ! */
|
487 |
fprintf(stderr, "RESET asked... Stop emulation\n");
|
488 |
if (loglevel)
|
489 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
490 |
abort(); |
491 |
case EXCP_MACHINE_CHECK:
|
492 |
fprintf(stderr, "Machine check exeption... Stop emulation\n");
|
493 |
if (loglevel)
|
494 |
fprintf(logfile, "RESET asked... Stop emulation\n");
|
495 |
info.si_signo = TARGET_SIGBUS; |
496 |
info.si_errno = 0;
|
497 |
info.si_code = TARGET_BUS_OBJERR; |
498 |
info._sifields._sigfault._addr = env->nip - 4;
|
499 |
queue_signal(info.si_signo, &info); |
500 |
case EXCP_DSI:
|
501 |
fprintf(stderr, "Invalid data memory access: 0x%08x\n", env->spr[DAR]);
|
502 |
if (loglevel) {
|
503 |
fprintf(logfile, "Invalid data memory access: 0x%08x\n",
|
504 |
env->spr[DAR]); |
505 |
} |
506 |
switch (env->error_code & 0xF) { |
507 |
case EXCP_DSI_TRANSLATE:
|
508 |
info.si_signo = TARGET_SIGSEGV; |
509 |
info.si_errno = 0;
|
510 |
info.si_code = TARGET_SEGV_MAPERR; |
511 |
break;
|
512 |
case EXCP_DSI_NOTSUP:
|
513 |
case EXCP_DSI_EXTERNAL:
|
514 |
info.si_signo = TARGET_SIGILL; |
515 |
info.si_errno = 0;
|
516 |
info.si_code = TARGET_ILL_ILLADR; |
517 |
break;
|
518 |
case EXCP_DSI_PROT:
|
519 |
info.si_signo = TARGET_SIGSEGV; |
520 |
info.si_errno = 0;
|
521 |
info.si_code = TARGET_SEGV_ACCERR; |
522 |
break;
|
523 |
case EXCP_DSI_DABR:
|
524 |
info.si_signo = TARGET_SIGTRAP; |
525 |
info.si_errno = 0;
|
526 |
info.si_code = TARGET_TRAP_BRKPT; |
527 |
break;
|
528 |
default:
|
529 |
/* Let's send a regular segfault... */
|
530 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
531 |
env->error_code); |
532 |
if (loglevel) {
|
533 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
534 |
env->error_code); |
535 |
} |
536 |
info.si_signo = TARGET_SIGSEGV; |
537 |
info.si_errno = 0;
|
538 |
info.si_code = TARGET_SEGV_MAPERR; |
539 |
break;
|
540 |
} |
541 |
info._sifields._sigfault._addr = env->nip; |
542 |
queue_signal(info.si_signo, &info); |
543 |
break;
|
544 |
case EXCP_ISI:
|
545 |
fprintf(stderr, "Invalid instruction fetch\n");
|
546 |
if (loglevel)
|
547 |
fprintf(logfile, "Invalid instruction fetch\n");
|
548 |
switch (env->error_code) {
|
549 |
case EXCP_ISI_TRANSLATE:
|
550 |
info.si_signo = TARGET_SIGSEGV; |
551 |
info.si_errno = 0;
|
552 |
info.si_code = TARGET_SEGV_MAPERR; |
553 |
break;
|
554 |
case EXCP_ISI_GUARD:
|
555 |
info.si_signo = TARGET_SIGILL; |
556 |
info.si_errno = 0;
|
557 |
info.si_code = TARGET_ILL_ILLADR; |
558 |
break;
|
559 |
case EXCP_ISI_NOEXEC:
|
560 |
case EXCP_ISI_PROT:
|
561 |
info.si_signo = TARGET_SIGSEGV; |
562 |
info.si_errno = 0;
|
563 |
info.si_code = TARGET_SEGV_ACCERR; |
564 |
break;
|
565 |
default:
|
566 |
/* Let's send a regular segfault... */
|
567 |
fprintf(stderr, "Invalid segfault errno (%02x)\n",
|
568 |
env->error_code); |
569 |
if (loglevel) {
|
570 |
fprintf(logfile, "Invalid segfault errno (%02x)\n",
|
571 |
env->error_code); |
572 |
} |
573 |
info.si_signo = TARGET_SIGSEGV; |
574 |
info.si_errno = 0;
|
575 |
info.si_code = TARGET_SEGV_MAPERR; |
576 |
break;
|
577 |
} |
578 |
info._sifields._sigfault._addr = env->nip - 4;
|
579 |
queue_signal(info.si_signo, &info); |
580 |
break;
|
581 |
case EXCP_EXTERNAL:
|
582 |
/* Should not happen ! */
|
583 |
fprintf(stderr, "External interruption... Stop emulation\n");
|
584 |
if (loglevel)
|
585 |
fprintf(logfile, "External interruption... Stop emulation\n");
|
586 |
abort(); |
587 |
case EXCP_ALIGN:
|
588 |
fprintf(stderr, "Invalid unaligned memory access\n");
|
589 |
if (loglevel)
|
590 |
fprintf(logfile, "Invalid unaligned memory access\n");
|
591 |
info.si_signo = TARGET_SIGBUS; |
592 |
info.si_errno = 0;
|
593 |
info.si_code = TARGET_BUS_ADRALN; |
594 |
info._sifields._sigfault._addr = env->nip - 4;
|
595 |
queue_signal(info.si_signo, &info); |
596 |
break;
|
597 |
case EXCP_PROGRAM:
|
598 |
switch (env->error_code & ~0xF) { |
599 |
case EXCP_FP:
|
600 |
fprintf(stderr, "Program exception\n");
|
601 |
if (loglevel)
|
602 |
fprintf(logfile, "Program exception\n");
|
603 |
/* Set FX */
|
604 |
env->fpscr[7] |= 0x8; |
605 |
/* Finally, update FEX */
|
606 |
if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) & |
607 |
((env->fpscr[1] << 1) | (env->fpscr[0] >> 3))) |
608 |
env->fpscr[7] |= 0x4; |
609 |
info.si_signo = TARGET_SIGFPE; |
610 |
info.si_errno = 0;
|
611 |
switch (env->error_code & 0xF) { |
612 |
case EXCP_FP_OX:
|
613 |
info.si_code = TARGET_FPE_FLTOVF; |
614 |
break;
|
615 |
case EXCP_FP_UX:
|
616 |
info.si_code = TARGET_FPE_FLTUND; |
617 |
break;
|
618 |
case EXCP_FP_ZX:
|
619 |
case EXCP_FP_VXZDZ:
|
620 |
info.si_code = TARGET_FPE_FLTDIV; |
621 |
break;
|
622 |
case EXCP_FP_XX:
|
623 |
info.si_code = TARGET_FPE_FLTRES; |
624 |
break;
|
625 |
case EXCP_FP_VXSOFT:
|
626 |
info.si_code = TARGET_FPE_FLTINV; |
627 |
break;
|
628 |
case EXCP_FP_VXNAN:
|
629 |
case EXCP_FP_VXISI:
|
630 |
case EXCP_FP_VXIDI:
|
631 |
case EXCP_FP_VXIMZ:
|
632 |
case EXCP_FP_VXVC:
|
633 |
case EXCP_FP_VXSQRT:
|
634 |
case EXCP_FP_VXCVI:
|
635 |
info.si_code = TARGET_FPE_FLTSUB; |
636 |
break;
|
637 |
default:
|
638 |
fprintf(stderr, "Unknown floating point exception "
|
639 |
"(%02x)\n", env->error_code);
|
640 |
if (loglevel) {
|
641 |
fprintf(logfile, "Unknown floating point exception "
|
642 |
"(%02x)\n", env->error_code & 0xF); |
643 |
} |
644 |
} |
645 |
break;
|
646 |
case EXCP_INVAL:
|
647 |
fprintf(stderr, "Invalid instruction\n");
|
648 |
if (loglevel)
|
649 |
fprintf(logfile, "Invalid instruction\n");
|
650 |
info.si_signo = TARGET_SIGILL; |
651 |
info.si_errno = 0;
|
652 |
switch (env->error_code & 0xF) { |
653 |
case EXCP_INVAL_INVAL:
|
654 |
info.si_code = TARGET_ILL_ILLOPC; |
655 |
break;
|
656 |
case EXCP_INVAL_LSWX:
|
657 |
info.si_code = TARGET_ILL_ILLOPN; |
658 |
break;
|
659 |
case EXCP_INVAL_SPR:
|
660 |
info.si_code = TARGET_ILL_PRVREG; |
661 |
break;
|
662 |
case EXCP_INVAL_FP:
|
663 |
info.si_code = TARGET_ILL_COPROC; |
664 |
break;
|
665 |
default:
|
666 |
fprintf(stderr, "Unknown invalid operation (%02x)\n",
|
667 |
env->error_code & 0xF);
|
668 |
if (loglevel) {
|
669 |
fprintf(logfile, "Unknown invalid operation (%02x)\n",
|
670 |
env->error_code & 0xF);
|
671 |
} |
672 |
info.si_code = TARGET_ILL_ILLADR; |
673 |
break;
|
674 |
} |
675 |
break;
|
676 |
case EXCP_PRIV:
|
677 |
fprintf(stderr, "Privilege violation\n");
|
678 |
if (loglevel)
|
679 |
fprintf(logfile, "Privilege violation\n");
|
680 |
info.si_signo = TARGET_SIGILL; |
681 |
info.si_errno = 0;
|
682 |
switch (env->error_code & 0xF) { |
683 |
case EXCP_PRIV_OPC:
|
684 |
info.si_code = TARGET_ILL_PRVOPC; |
685 |
break;
|
686 |
case EXCP_PRIV_REG:
|
687 |
info.si_code = TARGET_ILL_PRVREG; |
688 |
break;
|
689 |
default:
|
690 |
fprintf(stderr, "Unknown privilege violation (%02x)\n",
|
691 |
env->error_code & 0xF);
|
692 |
info.si_code = TARGET_ILL_PRVOPC; |
693 |
break;
|
694 |
} |
695 |
break;
|
696 |
case EXCP_TRAP:
|
697 |
fprintf(stderr, "Tried to call a TRAP\n");
|
698 |
if (loglevel)
|
699 |
fprintf(logfile, "Tried to call a TRAP\n");
|
700 |
abort(); |
701 |
default:
|
702 |
/* Should not happen ! */
|
703 |
fprintf(stderr, "Unknown program exception (%02x)\n",
|
704 |
env->error_code); |
705 |
if (loglevel) {
|
706 |
fprintf(logfile, "Unknwon program exception (%02x)\n",
|
707 |
env->error_code); |
708 |
} |
709 |
abort(); |
710 |
} |
711 |
info._sifields._sigfault._addr = env->nip - 4;
|
712 |
queue_signal(info.si_signo, &info); |
713 |
break;
|
714 |
case EXCP_NO_FP:
|
715 |
fprintf(stderr, "No floating point allowed\n");
|
716 |
if (loglevel)
|
717 |
fprintf(logfile, "No floating point allowed\n");
|
718 |
info.si_signo = TARGET_SIGILL; |
719 |
info.si_errno = 0;
|
720 |
info.si_code = TARGET_ILL_COPROC; |
721 |
info._sifields._sigfault._addr = env->nip - 4;
|
722 |
queue_signal(info.si_signo, &info); |
723 |
break;
|
724 |
case EXCP_DECR:
|
725 |
/* Should not happen ! */
|
726 |
fprintf(stderr, "Decrementer exception\n");
|
727 |
if (loglevel)
|
728 |
fprintf(logfile, "Decrementer exception\n");
|
729 |
abort(); |
730 |
case EXCP_RESA: /* Implementation specific */ |
731 |
/* Should not happen ! */
|
732 |
fprintf(stderr, "RESA exception should never happen !\n");
|
733 |
if (loglevel)
|
734 |
fprintf(logfile, "RESA exception should never happen !\n");
|
735 |
abort(); |
736 |
case EXCP_RESB: /* Implementation specific */ |
737 |
/* Should not happen ! */
|
738 |
fprintf(stderr, "RESB exception should never happen !\n");
|
739 |
if (loglevel)
|
740 |
fprintf(logfile, "RESB exception should never happen !\n");
|
741 |
abort(); |
742 |
case EXCP_TRACE:
|
743 |
/* Do nothing: we use this to trace execution */
|
744 |
break;
|
745 |
case EXCP_FP_ASSIST:
|
746 |
/* Should not happen ! */
|
747 |
fprintf(stderr, "Floating point assist exception\n");
|
748 |
if (loglevel)
|
749 |
fprintf(logfile, "Floating point assist exception\n");
|
750 |
abort(); |
751 |
case EXCP_MTMSR:
|
752 |
/* We reloaded the msr, just go on */
|
753 |
if (msr_pr) {
|
754 |
fprintf(stderr, "Tried to go into supervisor mode !\n");
|
755 |
if (loglevel)
|
756 |
fprintf(logfile, "Tried to go into supervisor mode !\n");
|
757 |
abort(); |
758 |
} |
759 |
break;
|
760 |
case EXCP_BRANCH:
|
761 |
/* We stopped because of a jump... */
|
762 |
break;
|
763 |
case EXCP_RFI:
|
764 |
/* Should not occur: we always are in user mode */
|
765 |
fprintf(stderr, "Return from interrupt ?\n");
|
766 |
if (loglevel)
|
767 |
fprintf(logfile, "Return from interrupt ?\n");
|
768 |
abort(); |
769 |
case EXCP_INTERRUPT:
|
770 |
/* Don't know why this should ever happen... */
|
771 |
break;
|
772 |
default:
|
773 |
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
|
774 |
trapnr); |
775 |
if (loglevel) {
|
776 |
fprintf(logfile, "qemu: unhandled CPU exception 0x%02x - "
|
777 |
"0x%02x - aborting\n", trapnr, env->error_code);
|
778 |
} |
779 |
abort(); |
780 |
} |
781 |
if (trapnr < EXCP_PPC_MAX)
|
782 |
env->exceptions &= ~(1 << trapnr);
|
783 |
process_pending_signals(env); |
784 |
if (env->exceptions != 0) { |
785 |
check_exception_state(env); |
786 |
} |
787 |
} |
788 |
} |
789 |
#endif
|
790 |
|
791 |
void usage(void) |
792 |
{ |
793 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" |
794 |
"usage: qemu-" TARGET_ARCH " [-h] [-d] [-L path] [-s size] program [arguments...]\n" |
795 |
"Linux CPU emulator (compiled for %s emulation)\n"
|
796 |
"\n"
|
797 |
"-h print this help\n"
|
798 |
"-L path set the elf interpreter prefix (default=%s)\n"
|
799 |
"-s size set the stack size in bytes (default=%ld)\n"
|
800 |
"\n"
|
801 |
"debug options:\n"
|
802 |
#ifdef USE_CODE_COPY
|
803 |
"-no-code-copy disable code copy acceleration\n"
|
804 |
#endif
|
805 |
"-d activate log (logfile=%s)\n"
|
806 |
"-p pagesize set the host page size to 'pagesize'\n",
|
807 |
TARGET_ARCH, |
808 |
interp_prefix, |
809 |
x86_stack_size, |
810 |
DEBUG_LOGFILE); |
811 |
_exit(1);
|
812 |
} |
813 |
|
814 |
/* XXX: currently only used for async signals (see signal.c) */
|
815 |
CPUState *global_env; |
816 |
/* used only if single thread */
|
817 |
CPUState *cpu_single_env = NULL;
|
818 |
|
819 |
/* used to free thread contexts */
|
820 |
TaskState *first_task_state; |
821 |
|
822 |
int main(int argc, char **argv) |
823 |
{ |
824 |
const char *filename; |
825 |
struct target_pt_regs regs1, *regs = ®s1;
|
826 |
struct image_info info1, *info = &info1;
|
827 |
TaskState ts1, *ts = &ts1; |
828 |
CPUState *env; |
829 |
int optind;
|
830 |
const char *r; |
831 |
|
832 |
if (argc <= 1) |
833 |
usage(); |
834 |
|
835 |
/* init debug */
|
836 |
cpu_set_log_filename(DEBUG_LOGFILE); |
837 |
|
838 |
optind = 1;
|
839 |
for(;;) {
|
840 |
if (optind >= argc)
|
841 |
break;
|
842 |
r = argv[optind]; |
843 |
if (r[0] != '-') |
844 |
break;
|
845 |
optind++; |
846 |
r++; |
847 |
if (!strcmp(r, "-")) { |
848 |
break;
|
849 |
} else if (!strcmp(r, "d")) { |
850 |
cpu_set_log(CPU_LOG_ALL); |
851 |
} else if (!strcmp(r, "s")) { |
852 |
r = argv[optind++]; |
853 |
x86_stack_size = strtol(r, (char **)&r, 0); |
854 |
if (x86_stack_size <= 0) |
855 |
usage(); |
856 |
if (*r == 'M') |
857 |
x86_stack_size *= 1024 * 1024; |
858 |
else if (*r == 'k' || *r == 'K') |
859 |
x86_stack_size *= 1024;
|
860 |
} else if (!strcmp(r, "L")) { |
861 |
interp_prefix = argv[optind++]; |
862 |
} else if (!strcmp(r, "p")) { |
863 |
host_page_size = atoi(argv[optind++]); |
864 |
if (host_page_size == 0 || |
865 |
(host_page_size & (host_page_size - 1)) != 0) { |
866 |
fprintf(stderr, "page size must be a power of two\n");
|
867 |
exit(1);
|
868 |
} |
869 |
} else
|
870 |
#ifdef USE_CODE_COPY
|
871 |
if (!strcmp(r, "no-code-copy")) { |
872 |
code_copy_enabled = 0;
|
873 |
} else
|
874 |
#endif
|
875 |
{ |
876 |
usage(); |
877 |
} |
878 |
} |
879 |
if (optind >= argc)
|
880 |
usage(); |
881 |
filename = argv[optind]; |
882 |
|
883 |
/* Zero out regs */
|
884 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
885 |
|
886 |
/* Zero out image_info */
|
887 |
memset(info, 0, sizeof(struct image_info)); |
888 |
|
889 |
/* Scan interp_prefix dir for replacement files. */
|
890 |
init_paths(interp_prefix); |
891 |
|
892 |
/* NOTE: we need to init the CPU at this stage to get the
|
893 |
host_page_size */
|
894 |
env = cpu_init(); |
895 |
|
896 |
if (elf_exec(filename, argv+optind, environ, regs, info) != 0) { |
897 |
printf("Error loading %s\n", filename);
|
898 |
_exit(1);
|
899 |
} |
900 |
|
901 |
if (loglevel) {
|
902 |
page_dump(logfile); |
903 |
|
904 |
fprintf(logfile, "start_brk 0x%08lx\n" , info->start_brk);
|
905 |
fprintf(logfile, "end_code 0x%08lx\n" , info->end_code);
|
906 |
fprintf(logfile, "start_code 0x%08lx\n" , info->start_code);
|
907 |
fprintf(logfile, "end_data 0x%08lx\n" , info->end_data);
|
908 |
fprintf(logfile, "start_stack 0x%08lx\n" , info->start_stack);
|
909 |
fprintf(logfile, "brk 0x%08lx\n" , info->brk);
|
910 |
fprintf(logfile, "entry 0x%08lx\n" , info->entry);
|
911 |
} |
912 |
|
913 |
target_set_brk((char *)info->brk);
|
914 |
syscall_init(); |
915 |
signal_init(); |
916 |
|
917 |
global_env = env; |
918 |
|
919 |
/* build Task State */
|
920 |
memset(ts, 0, sizeof(TaskState)); |
921 |
env->opaque = ts; |
922 |
ts->used = 1;
|
923 |
env->user_mode_only = 1;
|
924 |
|
925 |
#if defined(TARGET_I386)
|
926 |
cpu_x86_set_cpl(env, 3);
|
927 |
|
928 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
929 |
env->hflags |= HF_PE_MASK; |
930 |
|
931 |
/* flags setup : we activate the IRQs by default as in user mode */
|
932 |
env->eflags |= IF_MASK; |
933 |
|
934 |
/* linux register setup */
|
935 |
env->regs[R_EAX] = regs->eax; |
936 |
env->regs[R_EBX] = regs->ebx; |
937 |
env->regs[R_ECX] = regs->ecx; |
938 |
env->regs[R_EDX] = regs->edx; |
939 |
env->regs[R_ESI] = regs->esi; |
940 |
env->regs[R_EDI] = regs->edi; |
941 |
env->regs[R_EBP] = regs->ebp; |
942 |
env->regs[R_ESP] = regs->esp; |
943 |
env->eip = regs->eip; |
944 |
|
945 |
/* linux interrupt setup */
|
946 |
env->idt.base = (void *)idt_table;
|
947 |
env->idt.limit = sizeof(idt_table) - 1; |
948 |
set_idt(0, 0); |
949 |
set_idt(1, 0); |
950 |
set_idt(2, 0); |
951 |
set_idt(3, 3); |
952 |
set_idt(4, 3); |
953 |
set_idt(5, 3); |
954 |
set_idt(6, 0); |
955 |
set_idt(7, 0); |
956 |
set_idt(8, 0); |
957 |
set_idt(9, 0); |
958 |
set_idt(10, 0); |
959 |
set_idt(11, 0); |
960 |
set_idt(12, 0); |
961 |
set_idt(13, 0); |
962 |
set_idt(14, 0); |
963 |
set_idt(15, 0); |
964 |
set_idt(16, 0); |
965 |
set_idt(17, 0); |
966 |
set_idt(18, 0); |
967 |
set_idt(19, 0); |
968 |
set_idt(0x80, 3); |
969 |
|
970 |
/* linux segment setup */
|
971 |
env->gdt.base = (void *)gdt_table;
|
972 |
env->gdt.limit = sizeof(gdt_table) - 1; |
973 |
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, |
974 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
975 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
976 |
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, |
977 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
978 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
979 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
980 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
981 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
982 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
983 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
984 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
985 |
|
986 |
#elif defined(TARGET_ARM)
|
987 |
{ |
988 |
int i;
|
989 |
for(i = 0; i < 16; i++) { |
990 |
env->regs[i] = regs->uregs[i]; |
991 |
} |
992 |
env->cpsr = regs->uregs[16];
|
993 |
} |
994 |
#elif defined(TARGET_SPARC)
|
995 |
{ |
996 |
int i;
|
997 |
env->pc = regs->pc; |
998 |
env->npc = regs->npc; |
999 |
env->y = regs->y; |
1000 |
for(i = 0; i < 8; i++) |
1001 |
env->gregs[i] = regs->u_regs[i]; |
1002 |
for(i = 0; i < 8; i++) |
1003 |
env->regwptr[i] = regs->u_regs[i + 8];
|
1004 |
} |
1005 |
#elif defined(TARGET_PPC)
|
1006 |
{ |
1007 |
int i;
|
1008 |
for (i = 0; i < 32; i++) { |
1009 |
if (i != 12 && i != 6) |
1010 |
env->msr[i] = (regs->msr >> i) & 1;
|
1011 |
} |
1012 |
env->nip = regs->nip; |
1013 |
for(i = 0; i < 32; i++) { |
1014 |
env->gpr[i] = regs->gpr[i]; |
1015 |
} |
1016 |
} |
1017 |
#else
|
1018 |
#error unsupported target CPU
|
1019 |
#endif
|
1020 |
|
1021 |
cpu_loop(env); |
1022 |
/* never exits */
|
1023 |
return 0; |
1024 |
} |