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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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* Copyright (c) 2006 Pierre d'Herbemont
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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 <sys/syscall.h> |
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#include <sys/mman.h> |
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#include "qemu.h" |
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#define DEBUG_LOGFILE "/tmp/qemu.log" |
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#ifdef __APPLE__
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#include <crt_externs.h> |
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# define environ (*_NSGetEnviron())
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#endif
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#include <mach/mach_init.h> |
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#include <mach/vm_map.h> |
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const char *interp_prefix = ""; |
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asm(".zerofill __STD_PROG_ZONE, __STD_PROG_ZONE, __std_prog_zone, 0x0dfff000"); |
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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 stack_size = 512 * 1024; |
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void qerror(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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fprintf(stderr, "\n");
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exit(1);
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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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int cpu_inw(CPUState *env, int addr) |
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{ |
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fprintf(stderr, "inw: port=0x%04x\n", addr);
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return 0; |
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} |
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int cpu_inl(CPUState *env, int addr) |
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{ |
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fprintf(stderr, "inl: port=0x%04x\n", addr);
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return 0; |
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} |
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int cpu_get_pic_interrupt(CPUState *env)
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{ |
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return -1; |
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} |
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#ifdef TARGET_PPC
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static inline uint64_t cpu_ppc_get_tb (CPUState *env) |
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{ |
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/* TO FIX */
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return 0; |
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} |
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uint32_t cpu_ppc_load_tbl (CPUState *env) |
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{ |
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return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
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} |
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uint32_t cpu_ppc_load_tbu (CPUState *env) |
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{ |
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return cpu_ppc_get_tb(env) >> 32; |
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} |
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uint32_t cpu_ppc_load_atbl (CPUState *env) |
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{ |
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return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
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} |
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uint32_t cpu_ppc_load_atbu (CPUState *env) |
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{ |
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return cpu_ppc_get_tb(env) >> 32; |
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} |
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uint32_t cpu_ppc601_load_rtcu (CPUState *env) |
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{ |
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cpu_ppc_load_tbu(env); |
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} |
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uint32_t cpu_ppc601_load_rtcl (CPUState *env) |
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{ |
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return cpu_ppc_load_tbl(env) & 0x3FFFFF80; |
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} |
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/* XXX: to be fixed */
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int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp) |
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{ |
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return -1; |
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} |
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int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val) |
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{ |
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return -1; |
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} |
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#define EXCP_DUMP(env, fmt, args...) \
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do { \
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fprintf(stderr, fmt , ##args); \ |
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cpu_dump_state(env, stderr, fprintf, 0); \
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if (loglevel != 0) { \ |
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fprintf(logfile, fmt , ##args); \ |
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cpu_dump_state(env, logfile, fprintf, 0); \
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} \ |
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} while (0) |
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void cpu_loop(CPUPPCState *env)
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{ |
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int trapnr;
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uint32_t ret; |
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target_siginfo_t info; |
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for(;;) {
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trapnr = cpu_ppc_exec(env); |
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switch(trapnr) {
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case POWERPC_EXCP_NONE:
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/* Just go on */
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break;
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case POWERPC_EXCP_CRITICAL: /* Critical input */ |
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cpu_abort(env, "Critical interrupt while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_MCHECK: /* Machine check exception */ |
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cpu_abort(env, "Machine check exception while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_DSI: /* Data storage exception */ |
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#ifndef DAR
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/* To deal with multiple qemu header version as host for the darwin-user code */
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# define DAR SPR_DAR
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#endif
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EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n", |
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env->spr[SPR_DAR]); |
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/* Handle this via the gdb */
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gdb_handlesig (env, SIGSEGV); |
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info.si_addr = (void*)env->nip;
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queue_signal(info.si_signo, &info); |
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break;
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case POWERPC_EXCP_ISI: /* Instruction storage exception */ |
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EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n", |
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env->spr[SPR_DAR]); |
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/* Handle this via the gdb */
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gdb_handlesig (env, SIGSEGV); |
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info.si_addr = (void*)(env->nip - 4); |
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queue_signal(info.si_signo, &info); |
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break;
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case POWERPC_EXCP_EXTERNAL: /* External input */ |
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cpu_abort(env, "External interrupt while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_ALIGN: /* Alignment exception */ |
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EXCP_DUMP(env, "Unaligned memory access\n");
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info.si_errno = 0;
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info.si_code = BUS_ADRALN; |
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info.si_addr = (void*)(env->nip - 4); |
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queue_signal(info.si_signo, &info); |
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break;
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case POWERPC_EXCP_PROGRAM: /* Program exception */ |
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/* XXX: check this */
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switch (env->error_code & ~0xF) { |
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case POWERPC_EXCP_FP:
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EXCP_DUMP(env, "Floating point program exception\n");
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/* Set FX */
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info.si_signo = SIGFPE; |
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info.si_errno = 0;
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switch (env->error_code & 0xF) { |
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case POWERPC_EXCP_FP_OX:
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info.si_code = FPE_FLTOVF; |
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break;
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case POWERPC_EXCP_FP_UX:
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info.si_code = FPE_FLTUND; |
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break;
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case POWERPC_EXCP_FP_ZX:
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case POWERPC_EXCP_FP_VXZDZ:
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info.si_code = FPE_FLTDIV; |
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break;
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case POWERPC_EXCP_FP_XX:
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info.si_code = FPE_FLTRES; |
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break;
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case POWERPC_EXCP_FP_VXSOFT:
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info.si_code = FPE_FLTINV; |
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break;
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case POWERPC_EXCP_FP_VXSNAN:
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case POWERPC_EXCP_FP_VXISI:
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case POWERPC_EXCP_FP_VXIDI:
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case POWERPC_EXCP_FP_VXIMZ:
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case POWERPC_EXCP_FP_VXVC:
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case POWERPC_EXCP_FP_VXSQRT:
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case POWERPC_EXCP_FP_VXCVI:
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info.si_code = FPE_FLTSUB; |
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break;
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default:
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EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
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env->error_code); |
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break;
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} |
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break;
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case POWERPC_EXCP_INVAL:
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EXCP_DUMP(env, "Invalid instruction\n");
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info.si_signo = SIGILL; |
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info.si_errno = 0;
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switch (env->error_code & 0xF) { |
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case POWERPC_EXCP_INVAL_INVAL:
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info.si_code = ILL_ILLOPC; |
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break;
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case POWERPC_EXCP_INVAL_LSWX:
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info.si_code = ILL_ILLOPN; |
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break;
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case POWERPC_EXCP_INVAL_SPR:
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info.si_code = ILL_PRVREG; |
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break;
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case POWERPC_EXCP_INVAL_FP:
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info.si_code = ILL_COPROC; |
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break;
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default:
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EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
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env->error_code & 0xF);
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info.si_code = ILL_ILLADR; |
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break;
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} |
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/* Handle this via the gdb */
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gdb_handlesig (env, SIGSEGV); |
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break;
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case POWERPC_EXCP_PRIV:
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EXCP_DUMP(env, "Privilege violation\n");
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info.si_signo = SIGILL; |
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info.si_errno = 0;
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switch (env->error_code & 0xF) { |
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case POWERPC_EXCP_PRIV_OPC:
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info.si_code = ILL_PRVOPC; |
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break;
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case POWERPC_EXCP_PRIV_REG:
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info.si_code = ILL_PRVREG; |
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break;
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default:
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EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
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env->error_code & 0xF);
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info.si_code = ILL_PRVOPC; |
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break;
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} |
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break;
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case POWERPC_EXCP_TRAP:
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cpu_abort(env, "Tried to call a TRAP\n");
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break;
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default:
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/* Should not happen ! */
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cpu_abort(env, "Unknown program exception (%02x)\n",
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env->error_code); |
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break;
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} |
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info.si_addr = (void*)(env->nip - 4); |
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queue_signal(info.si_signo, &info); |
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break;
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case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ |
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EXCP_DUMP(env, "No floating point allowed\n");
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info.si_signo = SIGILL; |
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info.si_errno = 0;
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info.si_code = ILL_COPROC; |
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info.si_addr = (void*)(env->nip - 4); |
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queue_signal(info.si_signo, &info); |
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break;
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case POWERPC_EXCP_SYSCALL: /* System call exception */ |
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cpu_abort(env, "Syscall exception while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ |
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EXCP_DUMP(env, "No APU instruction allowed\n");
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info.si_signo = SIGILL; |
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info.si_errno = 0;
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info.si_code = ILL_COPROC; |
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info.si_addr = (void*)(env->nip - 4); |
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queue_signal(info.si_signo, &info); |
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break;
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case POWERPC_EXCP_DECR: /* Decrementer exception */ |
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cpu_abort(env, "Decrementer interrupt while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ |
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cpu_abort(env, "Fix interval timer interrupt while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ |
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cpu_abort(env, "Watchdog timer interrupt while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_DTLB: /* Data TLB error */ |
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cpu_abort(env, "Data TLB exception while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_ITLB: /* Instruction TLB error */ |
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cpu_abort(env, "Instruction TLB exception while in user mode. "
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"Aborting\n");
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break;
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case POWERPC_EXCP_DEBUG: /* Debug interrupt */ |
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gdb_handlesig (env, SIGTRAP); |
359 |
break;
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case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */ |
361 |
EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
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info.si_signo = SIGILL; |
363 |
info.si_errno = 0;
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info.si_code = ILL_COPROC; |
365 |
info.si_addr = (void*)(env->nip - 4); |
366 |
queue_signal(info.si_signo, &info); |
367 |
break;
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368 |
case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */ |
369 |
cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
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break;
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case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */ |
372 |
cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
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break;
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case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */ |
375 |
cpu_abort(env, "Performance monitor exception not handled\n");
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break;
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377 |
case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ |
378 |
cpu_abort(env, "Doorbell interrupt while in user mode. "
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"Aborting\n");
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380 |
break;
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381 |
case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ |
382 |
cpu_abort(env, "Doorbell critical interrupt while in user mode. "
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383 |
"Aborting\n");
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384 |
break;
|
385 |
case POWERPC_EXCP_RESET: /* System reset exception */ |
386 |
cpu_abort(env, "Reset interrupt while in user mode. "
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"Aborting\n");
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388 |
break;
|
389 |
case POWERPC_EXCP_DSEG: /* Data segment exception */ |
390 |
cpu_abort(env, "Data segment exception while in user mode. "
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391 |
"Aborting\n");
|
392 |
break;
|
393 |
case POWERPC_EXCP_ISEG: /* Instruction segment exception */ |
394 |
cpu_abort(env, "Instruction segment exception "
|
395 |
"while in user mode. Aborting\n");
|
396 |
break;
|
397 |
case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ |
398 |
cpu_abort(env, "Hypervisor decrementer interrupt "
|
399 |
"while in user mode. Aborting\n");
|
400 |
break;
|
401 |
case POWERPC_EXCP_TRACE: /* Trace exception */ |
402 |
/* Nothing to do:
|
403 |
* we use this exception to emulate step-by-step execution mode.
|
404 |
*/
|
405 |
break;
|
406 |
case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ |
407 |
cpu_abort(env, "Hypervisor data storage exception "
|
408 |
"while in user mode. Aborting\n");
|
409 |
break;
|
410 |
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ |
411 |
cpu_abort(env, "Hypervisor instruction storage exception "
|
412 |
"while in user mode. Aborting\n");
|
413 |
break;
|
414 |
case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ |
415 |
cpu_abort(env, "Hypervisor data segment exception "
|
416 |
"while in user mode. Aborting\n");
|
417 |
break;
|
418 |
case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ |
419 |
cpu_abort(env, "Hypervisor instruction segment exception "
|
420 |
"while in user mode. Aborting\n");
|
421 |
break;
|
422 |
case POWERPC_EXCP_VPU: /* Vector unavailable exception */ |
423 |
EXCP_DUMP(env, "No Altivec instructions allowed\n");
|
424 |
info.si_signo = SIGILL; |
425 |
info.si_errno = 0;
|
426 |
info.si_code = ILL_COPROC; |
427 |
info.si_addr = (void*)(env->nip - 4); |
428 |
queue_signal(info.si_signo, &info); |
429 |
break;
|
430 |
case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ |
431 |
cpu_abort(env, "Programable interval timer interrupt "
|
432 |
"while in user mode. Aborting\n");
|
433 |
break;
|
434 |
case POWERPC_EXCP_IO: /* IO error exception */ |
435 |
cpu_abort(env, "IO error exception while in user mode. "
|
436 |
"Aborting\n");
|
437 |
break;
|
438 |
case POWERPC_EXCP_RUNM: /* Run mode exception */ |
439 |
cpu_abort(env, "Run mode exception while in user mode. "
|
440 |
"Aborting\n");
|
441 |
break;
|
442 |
case POWERPC_EXCP_EMUL: /* Emulation trap exception */ |
443 |
cpu_abort(env, "Emulation trap exception not handled\n");
|
444 |
break;
|
445 |
case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ |
446 |
cpu_abort(env, "Instruction fetch TLB exception "
|
447 |
"while in user-mode. Aborting");
|
448 |
break;
|
449 |
case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ |
450 |
cpu_abort(env, "Data load TLB exception while in user-mode. "
|
451 |
"Aborting");
|
452 |
break;
|
453 |
case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ |
454 |
cpu_abort(env, "Data store TLB exception while in user-mode. "
|
455 |
"Aborting");
|
456 |
break;
|
457 |
case POWERPC_EXCP_FPA: /* Floating-point assist exception */ |
458 |
cpu_abort(env, "Floating-point assist exception not handled\n");
|
459 |
break;
|
460 |
case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ |
461 |
cpu_abort(env, "Instruction address breakpoint exception "
|
462 |
"not handled\n");
|
463 |
break;
|
464 |
case POWERPC_EXCP_SMI: /* System management interrupt */ |
465 |
cpu_abort(env, "System management interrupt while in user mode. "
|
466 |
"Aborting\n");
|
467 |
break;
|
468 |
case POWERPC_EXCP_THERM: /* Thermal interrupt */ |
469 |
cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
|
470 |
"Aborting\n");
|
471 |
break;
|
472 |
case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ |
473 |
cpu_abort(env, "Performance monitor exception not handled\n");
|
474 |
break;
|
475 |
case POWERPC_EXCP_VPUA: /* Vector assist exception */ |
476 |
cpu_abort(env, "Vector assist exception not handled\n");
|
477 |
break;
|
478 |
case POWERPC_EXCP_SOFTP: /* Soft patch exception */ |
479 |
cpu_abort(env, "Soft patch exception not handled\n");
|
480 |
break;
|
481 |
case POWERPC_EXCP_MAINT: /* Maintenance exception */ |
482 |
cpu_abort(env, "Maintenance exception while in user mode. "
|
483 |
"Aborting\n");
|
484 |
break;
|
485 |
case POWERPC_EXCP_STOP: /* stop translation */ |
486 |
/* We did invalidate the instruction cache. Go on */
|
487 |
break;
|
488 |
case POWERPC_EXCP_BRANCH: /* branch instruction: */ |
489 |
/* We just stopped because of a branch. Go on */
|
490 |
break;
|
491 |
case POWERPC_EXCP_SYSCALL_USER:
|
492 |
/* system call in user-mode emulation */
|
493 |
/* system call */
|
494 |
if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
495 |
ret = do_unix_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], env->gpr[9], env->gpr[10]*/);
|
498 |
else if(((int)env->gpr[0])<0) |
499 |
ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
500 |
env->gpr[5], env->gpr[6], env->gpr[7], |
501 |
env->gpr[8], env->gpr[9], env->gpr[10]); |
502 |
else
|
503 |
ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
504 |
env->gpr[5], env->gpr[6], env->gpr[7], |
505 |
env->gpr[8], env->gpr[9], env->gpr[10]); |
506 |
|
507 |
/* Unix syscall error signaling */
|
508 |
if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
509 |
{ |
510 |
if( (int)ret < 0 ) |
511 |
env->nip += 0;
|
512 |
else
|
513 |
env->nip += 4;
|
514 |
} |
515 |
|
516 |
/* Return value */
|
517 |
env->gpr[3] = ret;
|
518 |
break;
|
519 |
case EXCP_INTERRUPT:
|
520 |
/* just indicate that signals should be handled asap */
|
521 |
break;
|
522 |
default:
|
523 |
cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
|
524 |
break;
|
525 |
} |
526 |
process_pending_signals(env); |
527 |
} |
528 |
} |
529 |
#endif
|
530 |
|
531 |
|
532 |
#ifdef TARGET_I386
|
533 |
|
534 |
/***********************************************************/
|
535 |
/* CPUX86 core interface */
|
536 |
|
537 |
uint64_t cpu_get_tsc(CPUX86State *env) |
538 |
{ |
539 |
return cpu_get_real_ticks();
|
540 |
} |
541 |
|
542 |
void
|
543 |
write_dt(void *ptr, unsigned long addr, unsigned long limit, |
544 |
int flags)
|
545 |
{ |
546 |
unsigned int e1, e2; |
547 |
e1 = (addr << 16) | (limit & 0xffff); |
548 |
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
549 |
e2 |= flags; |
550 |
stl((uint8_t *)ptr, e1); |
551 |
stl((uint8_t *)ptr + 4, e2);
|
552 |
} |
553 |
|
554 |
static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
555 |
unsigned long addr, unsigned int sel) |
556 |
{ |
557 |
unsigned int e1, e2; |
558 |
e1 = (addr & 0xffff) | (sel << 16); |
559 |
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
560 |
stl((uint8_t *)ptr, e1); |
561 |
stl((uint8_t *)ptr + 4, e2);
|
562 |
} |
563 |
|
564 |
#define GDT_TABLE_SIZE 14 |
565 |
#define LDT_TABLE_SIZE 15 |
566 |
#define IDT_TABLE_SIZE 256 |
567 |
#define TSS_SIZE 104 |
568 |
uint64_t gdt_table[GDT_TABLE_SIZE]; |
569 |
uint64_t ldt_table[LDT_TABLE_SIZE]; |
570 |
uint64_t idt_table[IDT_TABLE_SIZE]; |
571 |
uint32_t tss[TSS_SIZE]; |
572 |
|
573 |
/* only dpl matters as we do only user space emulation */
|
574 |
static void set_idt(int n, unsigned int dpl) |
575 |
{ |
576 |
set_gate(idt_table + n, 0, dpl, 0, 0); |
577 |
} |
578 |
|
579 |
/* ABI convention: after a syscall if there was an error the CF flag is set */
|
580 |
static inline void set_error(CPUX86State *env, int ret) |
581 |
{ |
582 |
if(ret<0) |
583 |
env->eflags = env->eflags | 0x1;
|
584 |
else
|
585 |
env->eflags &= ~0x1;
|
586 |
env->regs[R_EAX] = ret; |
587 |
} |
588 |
|
589 |
void cpu_loop(CPUX86State *env)
|
590 |
{ |
591 |
int trapnr;
|
592 |
int ret;
|
593 |
uint8_t *pc; |
594 |
target_siginfo_t info; |
595 |
|
596 |
for(;;) {
|
597 |
trapnr = cpu_x86_exec(env); |
598 |
uint32_t *params = (uint32_t *)env->regs[R_ESP]; |
599 |
switch(trapnr) {
|
600 |
case 0x79: /* Our commpage hack back door exit is here */ |
601 |
do_commpage(env, env->eip, *(params + 1), *(params + 2), |
602 |
*(params + 3), *(params + 4), |
603 |
*(params + 5), *(params + 6), |
604 |
*(params + 7), *(params + 8)); |
605 |
break;
|
606 |
case 0x81: /* mach syscall */ |
607 |
{ |
608 |
ret = do_mach_syscall(env, env->regs[R_EAX], |
609 |
*(params + 1), *(params + 2), |
610 |
*(params + 3), *(params + 4), |
611 |
*(params + 5), *(params + 6), |
612 |
*(params + 7), *(params + 8)); |
613 |
set_error(env, ret); |
614 |
break;
|
615 |
} |
616 |
case 0x90: /* unix backdoor */ |
617 |
{ |
618 |
/* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
|
619 |
int saved_stack = env->regs[R_ESP];
|
620 |
env->regs[R_ESP] = env->regs[R_ECX]; |
621 |
|
622 |
ret = do_unix_syscall(env, env->regs[R_EAX]); |
623 |
|
624 |
env->regs[R_ECX] = env->regs[R_ESP]; |
625 |
env->regs[R_ESP] = saved_stack; |
626 |
|
627 |
set_error(env, ret); |
628 |
break;
|
629 |
} |
630 |
case 0x80: /* unix syscall */ |
631 |
{ |
632 |
ret = do_unix_syscall(env, env->regs[R_EAX]/*,
|
633 |
*(params + 1), *(params + 2),
|
634 |
*(params + 3), *(params + 4),
|
635 |
*(params + 5), *(params + 6),
|
636 |
*(params + 7), *(params + 8)*/);
|
637 |
set_error(env, ret); |
638 |
break;
|
639 |
} |
640 |
case 0x82: /* thread syscall */ |
641 |
{ |
642 |
ret = do_thread_syscall(env, env->regs[R_EAX], |
643 |
*(params + 1), *(params + 2), |
644 |
*(params + 3), *(params + 4), |
645 |
*(params + 5), *(params + 6), |
646 |
*(params + 7), *(params + 8)); |
647 |
set_error(env, ret); |
648 |
break;
|
649 |
} |
650 |
case EXCP0B_NOSEG:
|
651 |
case EXCP0C_STACK:
|
652 |
info.si_signo = SIGBUS; |
653 |
info.si_errno = 0;
|
654 |
info.si_code = BUS_NOOP; |
655 |
info.si_addr = 0;
|
656 |
gdb_handlesig (env, SIGBUS); |
657 |
queue_signal(info.si_signo, &info); |
658 |
break;
|
659 |
case EXCP0D_GPF:
|
660 |
info.si_signo = SIGSEGV; |
661 |
info.si_errno = 0;
|
662 |
info.si_code = SEGV_NOOP; |
663 |
info.si_addr = 0;
|
664 |
gdb_handlesig (env, SIGSEGV); |
665 |
queue_signal(info.si_signo, &info); |
666 |
break;
|
667 |
case EXCP0E_PAGE:
|
668 |
info.si_signo = SIGSEGV; |
669 |
info.si_errno = 0;
|
670 |
if (!(env->error_code & 1)) |
671 |
info.si_code = SEGV_MAPERR; |
672 |
else
|
673 |
info.si_code = SEGV_ACCERR; |
674 |
info.si_addr = (void*)env->cr[2]; |
675 |
gdb_handlesig (env, SIGSEGV); |
676 |
queue_signal(info.si_signo, &info); |
677 |
break;
|
678 |
case EXCP00_DIVZ:
|
679 |
/* division by zero */
|
680 |
info.si_signo = SIGFPE; |
681 |
info.si_errno = 0;
|
682 |
info.si_code = FPE_INTDIV; |
683 |
info.si_addr = (void*)env->eip;
|
684 |
gdb_handlesig (env, SIGFPE); |
685 |
queue_signal(info.si_signo, &info); |
686 |
break;
|
687 |
case EXCP01_SSTP:
|
688 |
case EXCP03_INT3:
|
689 |
info.si_signo = SIGTRAP; |
690 |
info.si_errno = 0;
|
691 |
info.si_code = TRAP_BRKPT; |
692 |
info.si_addr = (void*)env->eip;
|
693 |
gdb_handlesig (env, SIGTRAP); |
694 |
queue_signal(info.si_signo, &info); |
695 |
break;
|
696 |
case EXCP04_INTO:
|
697 |
case EXCP05_BOUND:
|
698 |
info.si_signo = SIGSEGV; |
699 |
info.si_errno = 0;
|
700 |
info.si_code = SEGV_NOOP; |
701 |
info.si_addr = 0;
|
702 |
gdb_handlesig (env, SIGSEGV); |
703 |
queue_signal(info.si_signo, &info); |
704 |
break;
|
705 |
case EXCP06_ILLOP:
|
706 |
info.si_signo = SIGILL; |
707 |
info.si_errno = 0;
|
708 |
info.si_code = ILL_ILLOPN; |
709 |
info.si_addr = (void*)env->eip;
|
710 |
gdb_handlesig (env, SIGILL); |
711 |
queue_signal(info.si_signo, &info); |
712 |
break;
|
713 |
case EXCP_INTERRUPT:
|
714 |
/* just indicate that signals should be handled asap */
|
715 |
break;
|
716 |
case EXCP_DEBUG:
|
717 |
{ |
718 |
int sig;
|
719 |
|
720 |
sig = gdb_handlesig (env, SIGTRAP); |
721 |
if (sig)
|
722 |
{ |
723 |
info.si_signo = sig; |
724 |
info.si_errno = 0;
|
725 |
info.si_code = TRAP_BRKPT; |
726 |
queue_signal(info.si_signo, &info); |
727 |
} |
728 |
} |
729 |
break;
|
730 |
default:
|
731 |
pc = (void*)(env->segs[R_CS].base + env->eip);
|
732 |
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
733 |
(long)pc, trapnr);
|
734 |
abort(); |
735 |
} |
736 |
process_pending_signals(env); |
737 |
} |
738 |
} |
739 |
#endif
|
740 |
|
741 |
void usage(void) |
742 |
{ |
743 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" |
744 |
"usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" |
745 |
"Darwin CPU emulator (compiled for %s emulation)\n"
|
746 |
"\n"
|
747 |
"-h print this help\n"
|
748 |
"-L path set the %s library path (default='%s')\n"
|
749 |
"-s size set the stack size in bytes (default=%ld)\n"
|
750 |
"\n"
|
751 |
"debug options:\n"
|
752 |
"-d options activate log (logfile='%s')\n"
|
753 |
"-g wait for gdb on port 1234\n"
|
754 |
"-p pagesize set the host page size to 'pagesize'\n",
|
755 |
TARGET_ARCH, |
756 |
TARGET_ARCH, |
757 |
interp_prefix, |
758 |
stack_size, |
759 |
DEBUG_LOGFILE); |
760 |
_exit(1);
|
761 |
} |
762 |
|
763 |
/* XXX: currently only used for async signals (see signal.c) */
|
764 |
CPUState *global_env; |
765 |
/* used only if single thread */
|
766 |
CPUState *cpu_single_env = NULL;
|
767 |
|
768 |
/* used to free thread contexts */
|
769 |
TaskState *first_task_state; |
770 |
|
771 |
int main(int argc, char **argv) |
772 |
{ |
773 |
const char *filename; |
774 |
struct target_pt_regs regs1, *regs = ®s1;
|
775 |
TaskState ts1, *ts = &ts1; |
776 |
CPUState *env; |
777 |
int optind;
|
778 |
short use_gdbstub = 0; |
779 |
const char *r; |
780 |
const char *cpu_model; |
781 |
|
782 |
if (argc <= 1) |
783 |
usage(); |
784 |
|
785 |
/* init debug */
|
786 |
cpu_set_log_filename(DEBUG_LOGFILE); |
787 |
|
788 |
optind = 1;
|
789 |
for(;;) {
|
790 |
if (optind >= argc)
|
791 |
break;
|
792 |
r = argv[optind]; |
793 |
if (r[0] != '-') |
794 |
break;
|
795 |
optind++; |
796 |
r++; |
797 |
if (!strcmp(r, "-")) { |
798 |
break;
|
799 |
} else if (!strcmp(r, "d")) { |
800 |
int mask;
|
801 |
CPULogItem *item; |
802 |
|
803 |
if (optind >= argc)
|
804 |
break;
|
805 |
|
806 |
r = argv[optind++]; |
807 |
mask = cpu_str_to_log_mask(r); |
808 |
if (!mask) {
|
809 |
printf("Log items (comma separated):\n");
|
810 |
for(item = cpu_log_items; item->mask != 0; item++) { |
811 |
printf("%-10s %s\n", item->name, item->help);
|
812 |
} |
813 |
exit(1);
|
814 |
} |
815 |
cpu_set_log(mask); |
816 |
} else if (!strcmp(r, "s")) { |
817 |
r = argv[optind++]; |
818 |
stack_size = strtol(r, (char **)&r, 0); |
819 |
if (stack_size <= 0) |
820 |
usage(); |
821 |
if (*r == 'M') |
822 |
stack_size *= 1024 * 1024; |
823 |
else if (*r == 'k' || *r == 'K') |
824 |
stack_size *= 1024;
|
825 |
} else if (!strcmp(r, "L")) { |
826 |
interp_prefix = argv[optind++]; |
827 |
} else if (!strcmp(r, "p")) { |
828 |
qemu_host_page_size = atoi(argv[optind++]); |
829 |
if (qemu_host_page_size == 0 || |
830 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
831 |
fprintf(stderr, "page size must be a power of two\n");
|
832 |
exit(1);
|
833 |
} |
834 |
} else
|
835 |
if (!strcmp(r, "g")) { |
836 |
use_gdbstub = 1;
|
837 |
} else if (!strcmp(r, "cpu")) { |
838 |
cpu_model = argv[optind++]; |
839 |
if (strcmp(cpu_model, "?") == 0) { |
840 |
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
841 |
#if defined(cpu_list)
|
842 |
cpu_list(stdout, &fprintf); |
843 |
#endif
|
844 |
_exit(1);
|
845 |
} |
846 |
} else
|
847 |
{ |
848 |
usage(); |
849 |
} |
850 |
} |
851 |
if (optind >= argc)
|
852 |
usage(); |
853 |
filename = argv[optind]; |
854 |
|
855 |
/* Zero out regs */
|
856 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
857 |
|
858 |
if (cpu_model == NULL) { |
859 |
#if defined(TARGET_I386)
|
860 |
#ifdef TARGET_X86_64
|
861 |
cpu_model = "qemu64";
|
862 |
#else
|
863 |
cpu_model = "qemu32";
|
864 |
#endif
|
865 |
#elif defined(TARGET_PPC)
|
866 |
#ifdef TARGET_PPC64
|
867 |
cpu_model = "970";
|
868 |
#else
|
869 |
cpu_model = "750";
|
870 |
#endif
|
871 |
#else
|
872 |
#error unsupported CPU
|
873 |
#endif
|
874 |
} |
875 |
|
876 |
cpu_exec_init_all(0);
|
877 |
/* NOTE: we need to init the CPU at this stage to get
|
878 |
qemu_host_page_size */
|
879 |
env = cpu_init(cpu_model); |
880 |
|
881 |
printf("Starting %s with qemu\n----------------\n", filename);
|
882 |
|
883 |
commpage_init(); |
884 |
|
885 |
if (mach_exec(filename, argv+optind, environ, regs) != 0) { |
886 |
printf("Error loading %s\n", filename);
|
887 |
_exit(1);
|
888 |
} |
889 |
|
890 |
syscall_init(); |
891 |
signal_init(); |
892 |
global_env = env; |
893 |
|
894 |
/* build Task State */
|
895 |
memset(ts, 0, sizeof(TaskState)); |
896 |
env->opaque = ts; |
897 |
ts->used = 1;
|
898 |
env->user_mode_only = 1;
|
899 |
|
900 |
#if defined(TARGET_I386)
|
901 |
cpu_x86_set_cpl(env, 3);
|
902 |
|
903 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
904 |
env->hflags |= HF_PE_MASK; |
905 |
|
906 |
if (env->cpuid_features & CPUID_SSE) {
|
907 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
908 |
env->hflags |= HF_OSFXSR_MASK; |
909 |
} |
910 |
|
911 |
/* flags setup : we activate the IRQs by default as in user mode */
|
912 |
env->eflags |= IF_MASK; |
913 |
|
914 |
/* darwin register setup */
|
915 |
env->regs[R_EAX] = regs->eax; |
916 |
env->regs[R_EBX] = regs->ebx; |
917 |
env->regs[R_ECX] = regs->ecx; |
918 |
env->regs[R_EDX] = regs->edx; |
919 |
env->regs[R_ESI] = regs->esi; |
920 |
env->regs[R_EDI] = regs->edi; |
921 |
env->regs[R_EBP] = regs->ebp; |
922 |
env->regs[R_ESP] = regs->esp; |
923 |
env->eip = regs->eip; |
924 |
|
925 |
/* Darwin LDT setup */
|
926 |
/* 2 - User code segment
|
927 |
3 - User data segment
|
928 |
4 - User cthread */
|
929 |
bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0])); |
930 |
env->ldt.base = (uint32_t) ldt_table; |
931 |
env->ldt.limit = sizeof(ldt_table) - 1; |
932 |
|
933 |
write_dt(ldt_table + 2, 0, 0xfffff, |
934 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
935 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
936 |
write_dt(ldt_table + 3, 0, 0xfffff, |
937 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
938 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
939 |
write_dt(ldt_table + 4, 0, 0xfffff, |
940 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
941 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
942 |
|
943 |
/* Darwin GDT setup.
|
944 |
* has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
|
945 |
now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
|
946 |
bzero(gdt_table, sizeof(gdt_table));
|
947 |
env->gdt.base = (uint32_t)gdt_table; |
948 |
env->gdt.limit = sizeof(gdt_table) - 1; |
949 |
|
950 |
/* Set up a back door to handle sysenter syscalls (unix) */
|
951 |
char * syscallbackdoor = malloc(64); |
952 |
page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID); |
953 |
|
954 |
int i = 0; |
955 |
syscallbackdoor[i++] = 0xcd;
|
956 |
syscallbackdoor[i++] = 0x90; /* int 0x90 */ |
957 |
syscallbackdoor[i++] = 0x0F;
|
958 |
syscallbackdoor[i++] = 0x35; /* sysexit */ |
959 |
|
960 |
/* Darwin sysenter/sysexit setup */
|
961 |
env->sysenter_cs = 0x1; //XXX |
962 |
env->sysenter_eip = (int)syscallbackdoor;
|
963 |
env->sysenter_esp = (int)malloc(64); |
964 |
|
965 |
/* Darwin TSS setup
|
966 |
This must match up with GDT[4] */
|
967 |
env->tr.base = (uint32_t) tss; |
968 |
env->tr.limit = sizeof(tss) - 1; |
969 |
env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
|
970 |
stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment |
971 |
|
972 |
/* Darwin interrupt setup */
|
973 |
bzero(idt_table, sizeof(idt_table));
|
974 |
env->idt.base = (uint32_t) idt_table; |
975 |
env->idt.limit = sizeof(idt_table) - 1; |
976 |
set_idt(0, 0); |
977 |
set_idt(1, 0); |
978 |
set_idt(2, 0); |
979 |
set_idt(3, 3); |
980 |
set_idt(4, 3); |
981 |
set_idt(5, 3); |
982 |
set_idt(6, 0); |
983 |
set_idt(7, 0); |
984 |
set_idt(8, 0); |
985 |
set_idt(9, 0); |
986 |
set_idt(10, 0); |
987 |
set_idt(11, 0); |
988 |
set_idt(12, 0); |
989 |
set_idt(13, 0); |
990 |
set_idt(14, 0); |
991 |
set_idt(15, 0); |
992 |
set_idt(16, 0); |
993 |
set_idt(17, 0); |
994 |
set_idt(18, 0); |
995 |
set_idt(19, 0); |
996 |
/* Syscalls are done via
|
997 |
int 0x80 (unix) (rarely used)
|
998 |
int 0x81 (mach)
|
999 |
int 0x82 (thread)
|
1000 |
int 0x83 (diag) (not handled here)
|
1001 |
sysenter/sysexit (unix) -> we redirect that to int 0x90 */
|
1002 |
set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */ |
1003 |
set_idt(0x80, 3); /* Unix Syscall */ |
1004 |
set_idt(0x81, 3); /* Mach Syscalls */ |
1005 |
set_idt(0x82, 3); /* thread Syscalls */ |
1006 |
|
1007 |
set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */ |
1008 |
|
1009 |
|
1010 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
1011 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
1012 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
1013 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
1014 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
1015 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
1016 |
|
1017 |
#elif defined(TARGET_PPC)
|
1018 |
{ |
1019 |
int i;
|
1020 |
|
1021 |
#if defined(TARGET_PPC64)
|
1022 |
#if defined(TARGET_ABI32)
|
1023 |
env->msr &= ~((target_ulong)1 << MSR_SF);
|
1024 |
#else
|
1025 |
env->msr |= (target_ulong)1 << MSR_SF;
|
1026 |
#endif
|
1027 |
#endif
|
1028 |
env->nip = regs->nip; |
1029 |
for(i = 0; i < 32; i++) { |
1030 |
env->gpr[i] = regs->gpr[i]; |
1031 |
} |
1032 |
} |
1033 |
#else
|
1034 |
#error unsupported target CPU
|
1035 |
#endif
|
1036 |
|
1037 |
if (use_gdbstub) {
|
1038 |
printf("Waiting for gdb Connection on port 1234...\n");
|
1039 |
gdbserver_start (1234);
|
1040 |
gdb_handlesig(env, 0);
|
1041 |
} |
1042 |
|
1043 |
cpu_loop(env); |
1044 |
/* never exits */
|
1045 |
return 0; |
1046 |
} |