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/*
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 *  qemu user main
3
 *
4
 *  Copyright (c) 2003 Fabrice Bellard
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 *  Copyright (c) 2006 Pierre d'Herbemont
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 *
7
 *  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
14
 *  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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 */
21
#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>
26
#include <unistd.h>
27

    
28
#include <sys/syscall.h>
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#include <sys/mman.h>
30

    
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#include "qemu.h"
32

    
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#define DEBUG_LOGFILE "/tmp/qemu.log"
34

    
35
#ifdef __APPLE__
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#include <crt_externs.h>
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# define environ  (*_NSGetEnviron())
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#endif
39

    
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#include <mach/mach_init.h>
41
#include <mach/vm_map.h>
42

    
43
const char *interp_prefix = "";
44

    
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asm(".zerofill __STD_PROG_ZONE, __STD_PROG_ZONE, __std_prog_zone, 0x0dfff000");
46

    
47
/* 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;
51

    
52
void qerror(const char *fmt, ...)
53
{
54
    va_list ap;
55

    
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    va_start(ap, fmt);
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    vfprintf(stderr, fmt, ap);
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    va_end(ap);
59
    fprintf(stderr, "\n");
60
    exit(1);
61
}
62

    
63
void gemu_log(const char *fmt, ...)
64
{
65
    va_list ap;
66

    
67
    va_start(ap, fmt);
68
    vfprintf(stderr, fmt, ap);
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    va_end(ap);
70
}
71

    
72
void cpu_outb(CPUState *env, int addr, int val)
73
{
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    fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
75
}
76

    
77
void cpu_outw(CPUState *env, int addr, int val)
78
{
79
    fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
80
}
81

    
82
void cpu_outl(CPUState *env, int addr, int val)
83
{
84
    fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
85
}
86

    
87
int cpu_inb(CPUState *env, int addr)
88
{
89
    fprintf(stderr, "inb: port=0x%04x\n", addr);
90
    return 0;
91
}
92

    
93
int cpu_inw(CPUState *env, int addr)
94
{
95
    fprintf(stderr, "inw: port=0x%04x\n", addr);
96
    return 0;
97
}
98

    
99
int cpu_inl(CPUState *env, int addr)
100
{
101
    fprintf(stderr, "inl: port=0x%04x\n", addr);
102
    return 0;
103
}
104

    
105
int cpu_get_pic_interrupt(CPUState *env)
106
{
107
    return -1;
108
}
109
#ifdef TARGET_PPC
110

    
111
static inline uint64_t cpu_ppc_get_tb (CPUState *env)
112
{
113
    /* TO FIX */
114
    return 0;
115
}
116

    
117
uint32_t cpu_ppc_load_tbl (CPUState *env)
118
{
119
    return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
120
}
121

    
122
uint32_t cpu_ppc_load_tbu (CPUState *env)
123
{
124
    return cpu_ppc_get_tb(env) >> 32;
125
}
126

    
127
static void cpu_ppc_store_tb (CPUState *env, uint64_t value)
128
{
129
    /* TO FIX */
130
}
131

    
132
void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
133
{
134
    cpu_ppc_store_tb(env, ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
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}
136

    
137
void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
138
{
139
    cpu_ppc_store_tb(env, ((uint64_t)cpu_ppc_load_tbl(env) << 32) | value);
140
}
141

    
142
void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
143
{
144
    cpu_ppc_store_tbu( env, value );
145
}
146

    
147
uint32_t cpu_ppc601_load_rtcu (CPUState *env)
148
{
149
    cpu_ppc_load_tbu(env);
150
}
151

    
152
uint32_t cpu_ppc601_load_rtcl (CPUState *env)
153
{
154
    return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
155
}
156

    
157
/* XXX: to be fixed */
158
int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
159
{
160
    return -1;
161
}
162

    
163
int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
164
{
165
    return -1;
166
}
167

    
168
#define EXCP_DUMP(env, fmt, args...)                                         \
169
do {                                                                          \
170
    fprintf(stderr, fmt , ##args);                                            \
171
    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);                             \
175
    }                                                                         \
176
} while (0)
177

    
178
void cpu_loop(CPUPPCState *env)
179
{
180
    int trapnr;
181
    uint32_t ret;
182
    target_siginfo_t info;
183

    
184
    for(;;) {
185
        trapnr = cpu_ppc_exec(env);
186
        switch(trapnr) {
187
        case POWERPC_EXCP_NONE:
188
            /* Just go on */
189
            break;
190
        case POWERPC_EXCP_CRITICAL: /* Critical input                        */
191
            cpu_abort(env, "Critical interrupt while in user mode. "
192
                      "Aborting\n");
193
            break;
194
        case POWERPC_EXCP_MCHECK:   /* Machine check exception               */
195
            cpu_abort(env, "Machine check exception while in user mode. "
196
                      "Aborting\n");
197
            break;
198
        case POWERPC_EXCP_DSI:      /* Data storage exception                */
199
#ifndef DAR
200
/* To deal with multiple qemu header version as host for the darwin-user code */
201
# define DAR SPR_DAR
202
#endif
203
            EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n",
204
                      env->spr[SPR_DAR]);
205
            /* Handle this via the gdb */
206
            gdb_handlesig (env, SIGSEGV);
207

    
208
            info.si_addr = (void*)env->nip;
209
            queue_signal(info.si_signo, &info);
210
            break;
211
        case POWERPC_EXCP_ISI:      /* Instruction storage exception         */
212
            EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n",
213
                      env->spr[SPR_DAR]);
214
            /* Handle this via the gdb */
215
            gdb_handlesig (env, SIGSEGV);
216

    
217
            info.si_addr = (void*)(env->nip - 4);
218
            queue_signal(info.si_signo, &info);
219
            break;
220
        case POWERPC_EXCP_EXTERNAL: /* External input                        */
221
            cpu_abort(env, "External interrupt while in user mode. "
222
                      "Aborting\n");
223
            break;
224
        case POWERPC_EXCP_ALIGN:    /* Alignment exception                   */
225
            EXCP_DUMP(env, "Unaligned memory access\n");
226
            info.si_errno = 0;
227
            info.si_code = BUS_ADRALN;
228
            info.si_addr = (void*)(env->nip - 4);
229
            queue_signal(info.si_signo, &info);
230
            break;
231
        case POWERPC_EXCP_PROGRAM:  /* Program exception                     */
232
            /* XXX: check this */
233
            switch (env->error_code & ~0xF) {
234
            case POWERPC_EXCP_FP:
235
                EXCP_DUMP(env, "Floating point program exception\n");
236
                /* Set FX */
237
                env->fpscr[7] |= 0x8;
238
                /* Finally, update FEX */
239
                if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
240
                    ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
241
                    env->fpscr[7] |= 0x4;
242
                info.si_signo = SIGFPE;
243
                info.si_errno = 0;
244
                switch (env->error_code & 0xF) {
245
                case POWERPC_EXCP_FP_OX:
246
                    info.si_code = FPE_FLTOVF;
247
                    break;
248
                case POWERPC_EXCP_FP_UX:
249
                    info.si_code = FPE_FLTUND;
250
                    break;
251
                case POWERPC_EXCP_FP_ZX:
252
                case POWERPC_EXCP_FP_VXZDZ:
253
                    info.si_code = FPE_FLTDIV;
254
                    break;
255
                case POWERPC_EXCP_FP_XX:
256
                    info.si_code = FPE_FLTRES;
257
                    break;
258
                case POWERPC_EXCP_FP_VXSOFT:
259
                    info.si_code = FPE_FLTINV;
260
                    break;
261
                case POWERPC_EXCP_FP_VXNAN:
262
                case POWERPC_EXCP_FP_VXISI:
263
                case POWERPC_EXCP_FP_VXIDI:
264
                case POWERPC_EXCP_FP_VXIMZ:
265
                case POWERPC_EXCP_FP_VXVC:
266
                case POWERPC_EXCP_FP_VXSQRT:
267
                case POWERPC_EXCP_FP_VXCVI:
268
                    info.si_code = FPE_FLTSUB;
269
                    break;
270
                default:
271
                    EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
272
                              env->error_code);
273
                    break;
274
                }
275
                break;
276
            case POWERPC_EXCP_INVAL:
277
                EXCP_DUMP(env, "Invalid instruction\n");
278
                info.si_signo = SIGILL;
279
                info.si_errno = 0;
280
                switch (env->error_code & 0xF) {
281
                case POWERPC_EXCP_INVAL_INVAL:
282
                    info.si_code = ILL_ILLOPC;
283
                    break;
284
                case POWERPC_EXCP_INVAL_LSWX:
285
                    info.si_code = ILL_ILLOPN;
286
                    break;
287
                case POWERPC_EXCP_INVAL_SPR:
288
                    info.si_code = ILL_PRVREG;
289
                    break;
290
                case POWERPC_EXCP_INVAL_FP:
291
                    info.si_code = ILL_COPROC;
292
                    break;
293
                default:
294
                    EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
295
                              env->error_code & 0xF);
296
                    info.si_code = ILL_ILLADR;
297
                    break;
298
                }
299
                /* Handle this via the gdb */
300
                gdb_handlesig (env, SIGSEGV);
301
                break;
302
            case POWERPC_EXCP_PRIV:
303
                EXCP_DUMP(env, "Privilege violation\n");
304
                info.si_signo = SIGILL;
305
                info.si_errno = 0;
306
                switch (env->error_code & 0xF) {
307
                case POWERPC_EXCP_PRIV_OPC:
308
                    info.si_code = ILL_PRVOPC;
309
                    break;
310
                case POWERPC_EXCP_PRIV_REG:
311
                    info.si_code = ILL_PRVREG;
312
                    break;
313
                default:
314
                    EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
315
                              env->error_code & 0xF);
316
                    info.si_code = ILL_PRVOPC;
317
                    break;
318
                }
319
                break;
320
            case POWERPC_EXCP_TRAP:
321
                cpu_abort(env, "Tried to call a TRAP\n");
322
                break;
323
            default:
324
                /* Should not happen ! */
325
                cpu_abort(env, "Unknown program exception (%02x)\n",
326
                          env->error_code);
327
                break;
328
            }
329
            info.si_addr = (void*)(env->nip - 4);
330
            queue_signal(info.si_signo, &info);
331
            break;
332
        case POWERPC_EXCP_FPU:      /* Floating-point unavailable exception  */
333
            EXCP_DUMP(env, "No floating point allowed\n");
334
            info.si_signo = SIGILL;
335
            info.si_errno = 0;
336
            info.si_code = ILL_COPROC;
337
            info.si_addr = (void*)(env->nip - 4);
338
            queue_signal(info.si_signo, &info);
339
            break;
340
        case POWERPC_EXCP_SYSCALL:  /* System call exception                 */
341
            cpu_abort(env, "Syscall exception while in user mode. "
342
                      "Aborting\n");
343
            break;
344
        case POWERPC_EXCP_APU:      /* Auxiliary processor unavailable       */
345
            EXCP_DUMP(env, "No APU instruction allowed\n");
346
            info.si_signo = SIGILL;
347
            info.si_errno = 0;
348
            info.si_code = ILL_COPROC;
349
            info.si_addr = (void*)(env->nip - 4);
350
            queue_signal(info.si_signo, &info);
351
            break;
352
        case POWERPC_EXCP_DECR:     /* Decrementer exception                 */
353
            cpu_abort(env, "Decrementer interrupt while in user mode. "
354
                      "Aborting\n");
355
            break;
356
        case POWERPC_EXCP_FIT:      /* Fixed-interval timer interrupt        */
357
            cpu_abort(env, "Fix interval timer interrupt while in user mode. "
358
                      "Aborting\n");
359
            break;
360
        case POWERPC_EXCP_WDT:      /* Watchdog timer interrupt              */
361
            cpu_abort(env, "Watchdog timer interrupt while in user mode. "
362
                      "Aborting\n");
363
            break;
364
        case POWERPC_EXCP_DTLB:     /* Data TLB error                        */
365
            cpu_abort(env, "Data TLB exception while in user mode. "
366
                      "Aborting\n");
367
            break;
368
        case POWERPC_EXCP_ITLB:     /* Instruction TLB error                 */
369
            cpu_abort(env, "Instruction TLB exception while in user mode. "
370
                      "Aborting\n");
371
            break;
372
        case POWERPC_EXCP_DEBUG:    /* Debug interrupt                       */
373
            gdb_handlesig (env, SIGTRAP);
374
            break;
375
#if defined(TARGET_PPCEMB)
376
        case POWERPC_EXCP_SPEU:     /* SPE/embedded floating-point unavail.  */
377
            EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
378
            info.si_signo = SIGILL;
379
            info.si_errno = 0;
380
            info.si_code = ILL_COPROC;
381
            info.si_addr = (void*)(env->nip - 4);
382
            queue_signal(info.si_signo, &info);
383
            break;
384
        case POWERPC_EXCP_EFPDI:    /* Embedded floating-point data IRQ      */
385
            cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
386
            break;
387
        case POWERPC_EXCP_EFPRI:    /* Embedded floating-point round IRQ     */
388
            cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
389
            break;
390
        case POWERPC_EXCP_EPERFM:   /* Embedded performance monitor IRQ      */
391
            cpu_abort(env, "Performance monitor exception not handled\n");
392
            break;
393
        case POWERPC_EXCP_DOORI:    /* Embedded doorbell interrupt           */
394
            cpu_abort(env, "Doorbell interrupt while in user mode. "
395
                       "Aborting\n");
396
            break;
397
        case POWERPC_EXCP_DOORCI:   /* Embedded doorbell critical interrupt  */
398
            cpu_abort(env, "Doorbell critical interrupt while in user mode. "
399
                      "Aborting\n");
400
            break;
401
#endif /* defined(TARGET_PPCEMB) */
402
        case POWERPC_EXCP_RESET:    /* System reset exception                */
403
            cpu_abort(env, "Reset interrupt while in user mode. "
404
                      "Aborting\n");
405
            break;
406
#if defined(TARGET_PPC64) /* PowerPC 64 */
407
        case POWERPC_EXCP_DSEG:     /* Data segment exception                */
408
            cpu_abort(env, "Data segment exception while in user mode. "
409
                      "Aborting\n");
410
            break;
411
        case POWERPC_EXCP_ISEG:     /* Instruction segment exception         */
412
            cpu_abort(env, "Instruction segment exception "
413
                      "while in user mode. Aborting\n");
414
            break;
415
#endif /* defined(TARGET_PPC64) */
416
#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
417
        case POWERPC_EXCP_HDECR:    /* Hypervisor decrementer exception      */
418
            cpu_abort(env, "Hypervisor decrementer interrupt "
419
                      "while in user mode. Aborting\n");
420
            break;
421
#endif /* defined(TARGET_PPC64H) */
422
        case POWERPC_EXCP_TRACE:    /* Trace exception                       */
423
            /* Nothing to do:
424
             * we use this exception to emulate step-by-step execution mode.
425
             */
426
            break;
427
#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
428
        case POWERPC_EXCP_HDSI:     /* Hypervisor data storage exception     */
429
            cpu_abort(env, "Hypervisor data storage exception "
430
                      "while in user mode. Aborting\n");
431
            break;
432
        case POWERPC_EXCP_HISI:     /* Hypervisor instruction storage excp   */
433
            cpu_abort(env, "Hypervisor instruction storage exception "
434
                      "while in user mode. Aborting\n");
435
            break;
436
        case POWERPC_EXCP_HDSEG:    /* Hypervisor data segment exception     */
437
            cpu_abort(env, "Hypervisor data segment exception "
438
                      "while in user mode. Aborting\n");
439
            break;
440
        case POWERPC_EXCP_HISEG:    /* Hypervisor instruction segment excp   */
441
            cpu_abort(env, "Hypervisor instruction segment exception "
442
                      "while in user mode. Aborting\n");
443
            break;
444
#endif /* defined(TARGET_PPC64H) */
445
        case POWERPC_EXCP_VPU:      /* Vector unavailable exception          */
446
            EXCP_DUMP(env, "No Altivec instructions allowed\n");
447
            info.si_signo = SIGILL;
448
            info.si_errno = 0;
449
            info.si_code = ILL_COPROC;
450
            info.si_addr = (void*)(env->nip - 4);
451
            queue_signal(info.si_signo, &info);
452
            break;
453
        case POWERPC_EXCP_PIT:      /* Programmable interval timer IRQ       */
454
            cpu_abort(env, "Programable interval timer interrupt "
455
                      "while in user mode. Aborting\n");
456
            break;
457
        case POWERPC_EXCP_IO:       /* IO error exception                    */
458
            cpu_abort(env, "IO error exception while in user mode. "
459
                      "Aborting\n");
460
            break;
461
        case POWERPC_EXCP_RUNM:     /* Run mode exception                    */
462
            cpu_abort(env, "Run mode exception while in user mode. "
463
                      "Aborting\n");
464
            break;
465
        case POWERPC_EXCP_EMUL:     /* Emulation trap exception              */
466
            cpu_abort(env, "Emulation trap exception not handled\n");
467
            break;
468
        case POWERPC_EXCP_IFTLB:    /* Instruction fetch TLB error           */
469
            cpu_abort(env, "Instruction fetch TLB exception "
470
                      "while in user-mode. Aborting");
471
            break;
472
        case POWERPC_EXCP_DLTLB:    /* Data load TLB miss                    */
473
            cpu_abort(env, "Data load TLB exception while in user-mode. "
474
                      "Aborting");
475
            break;
476
        case POWERPC_EXCP_DSTLB:    /* Data store TLB miss                   */
477
            cpu_abort(env, "Data store TLB exception while in user-mode. "
478
                      "Aborting");
479
            break;
480
        case POWERPC_EXCP_FPA:      /* Floating-point assist exception       */
481
            cpu_abort(env, "Floating-point assist exception not handled\n");
482
            break;
483
        case POWERPC_EXCP_IABR:     /* Instruction address breakpoint        */
484
            cpu_abort(env, "Instruction address breakpoint exception "
485
                      "not handled\n");
486
            break;
487
        case POWERPC_EXCP_SMI:      /* System management interrupt           */
488
            cpu_abort(env, "System management interrupt while in user mode. "
489
                      "Aborting\n");
490
            break;
491
        case POWERPC_EXCP_THERM:    /* Thermal interrupt                     */
492
            cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
493
                      "Aborting\n");
494
            break;
495
        case POWERPC_EXCP_PERFM:    /* Embedded performance monitor IRQ      */
496
            cpu_abort(env, "Performance monitor exception not handled\n");
497
            break;
498
        case POWERPC_EXCP_VPUA:     /* Vector assist exception               */
499
            cpu_abort(env, "Vector assist exception not handled\n");
500
            break;
501
        case POWERPC_EXCP_SOFTP:    /* Soft patch exception                  */
502
            cpu_abort(env, "Soft patch exception not handled\n");
503
            break;
504
        case POWERPC_EXCP_MAINT:    /* Maintenance exception                 */
505
            cpu_abort(env, "Maintenance exception while in user mode. "
506
                      "Aborting\n");
507
            break;
508
        case POWERPC_EXCP_STOP:     /* stop translation                      */
509
            /* We did invalidate the instruction cache. Go on */
510
            break;
511
        case POWERPC_EXCP_BRANCH:   /* branch instruction:                   */
512
            /* We just stopped because of a branch. Go on */
513
            break;
514
        case POWERPC_EXCP_SYSCALL_USER:
515
            /* system call in user-mode emulation */
516
            /* system call */
517
            if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
518
                ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4],
519
                                      env->gpr[5], env->gpr[6], env->gpr[7],
520
                                      env->gpr[8], env->gpr[9], env->gpr[10]*/);
521
            else if(((int)env->gpr[0])<0)
522
                ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
523
                                      env->gpr[5], env->gpr[6], env->gpr[7],
524
                                      env->gpr[8], env->gpr[9], env->gpr[10]);
525
            else
526
                ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
527
                                        env->gpr[5], env->gpr[6], env->gpr[7],
528
                                        env->gpr[8], env->gpr[9], env->gpr[10]);
529

    
530
            /* Unix syscall error signaling */
531
            if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
532
            {
533
                if( (int)ret < 0 )
534
                    env->nip += 0;
535
                else
536
                    env->nip += 4;
537
            }
538

    
539
            /* Return value */
540
            env->gpr[3] = ret;
541
            break;
542
        default:
543
            cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
544
            break;
545
        }
546
        process_pending_signals(env);
547
    }
548
}
549
#endif
550

    
551

    
552
#ifdef TARGET_I386
553

    
554
/***********************************************************/
555
/* CPUX86 core interface */
556

    
557
uint64_t cpu_get_tsc(CPUX86State *env)
558
{
559
    return cpu_get_real_ticks();
560
}
561

    
562
void
563
write_dt(void *ptr, unsigned long addr, unsigned long limit,
564
                     int flags)
565
{
566
    unsigned int e1, e2;
567
    e1 = (addr << 16) | (limit & 0xffff);
568
    e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
569
    e2 |= flags;
570
    stl((uint8_t *)ptr, e1);
571
    stl((uint8_t *)ptr + 4, e2);
572
}
573

    
574
static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
575
                     unsigned long addr, unsigned int sel)
576
{
577
    unsigned int e1, e2;
578
    e1 = (addr & 0xffff) | (sel << 16);
579
    e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
580
    stl((uint8_t *)ptr, e1);
581
    stl((uint8_t *)ptr + 4, e2);
582
}
583

    
584
#define GDT_TABLE_SIZE 14
585
#define LDT_TABLE_SIZE 15
586
#define IDT_TABLE_SIZE 256
587
#define TSS_SIZE 104
588
uint64_t gdt_table[GDT_TABLE_SIZE];
589
uint64_t ldt_table[LDT_TABLE_SIZE];
590
uint64_t idt_table[IDT_TABLE_SIZE];
591
uint32_t tss[TSS_SIZE];
592

    
593
/* only dpl matters as we do only user space emulation */
594
static void set_idt(int n, unsigned int dpl)
595
{
596
    set_gate(idt_table + n, 0, dpl, 0, 0);
597
}
598

    
599
/* ABI convention: after a syscall if there was an error the CF flag is set */
600
static inline void set_error(CPUX86State *env, int ret)
601
{
602
    if(ret<0)
603
        env->eflags = env->eflags | 0x1;
604
    else
605
        env->eflags &= ~0x1;
606
    env->regs[R_EAX] = ret;
607
}
608

    
609
void cpu_loop(CPUX86State *env)
610
{
611
    int trapnr;
612
    int ret;
613
    uint8_t *pc;
614
    target_siginfo_t info;
615

    
616
    for(;;) {
617
        trapnr = cpu_x86_exec(env);
618
        uint32_t *params = (uint32_t *)env->regs[R_ESP];
619
        switch(trapnr) {
620
        case 0x79: /* Our commpage hack back door exit is here */
621
            do_commpage(env,  env->eip,   *(params + 1), *(params + 2),
622
                                          *(params + 3), *(params + 4),
623
                                          *(params + 5), *(params + 6),
624
                                          *(params + 7), *(params + 8));
625
            break;
626
        case 0x81: /* mach syscall */
627
        {
628
            ret = do_mach_syscall(env,  env->regs[R_EAX],
629
                                          *(params + 1), *(params + 2),
630
                                          *(params + 3), *(params + 4),
631
                                          *(params + 5), *(params + 6),
632
                                          *(params + 7), *(params + 8));
633
            set_error(env, ret);
634
            break;
635
        }
636
        case 0x90: /* unix backdoor */
637
        {
638
            /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
639
            int saved_stack = env->regs[R_ESP];
640
            env->regs[R_ESP] = env->regs[R_ECX];
641

    
642
            ret = do_unix_syscall(env, env->regs[R_EAX]);
643

    
644
            env->regs[R_ECX] = env->regs[R_ESP];
645
            env->regs[R_ESP] = saved_stack;
646

    
647
            set_error(env, ret);
648
            break;
649
        }
650
        case 0x80: /* unix syscall */
651
        {
652
            ret = do_unix_syscall(env, env->regs[R_EAX]/*,
653
                                          *(params + 1), *(params + 2),
654
                                          *(params + 3), *(params + 4),
655
                                          *(params + 5), *(params + 6),
656
                                          *(params + 7), *(params + 8)*/);
657
            set_error(env, ret);
658
            break;
659
        }
660
        case 0x82: /* thread syscall */
661
        {
662
            ret = do_thread_syscall(env,  env->regs[R_EAX],
663
                                          *(params + 1), *(params + 2),
664
                                          *(params + 3), *(params + 4),
665
                                          *(params + 5), *(params + 6),
666
                                          *(params + 7), *(params + 8));
667
            set_error(env, ret);
668
            break;
669
        }
670
        case EXCP0B_NOSEG:
671
        case EXCP0C_STACK:
672
            info.si_signo = SIGBUS;
673
            info.si_errno = 0;
674
            info.si_code = BUS_NOOP;
675
            info.si_addr = 0;
676
            gdb_handlesig (env, SIGBUS);
677
            queue_signal(info.si_signo, &info);
678
            break;
679
        case EXCP0D_GPF:
680
            info.si_signo = SIGSEGV;
681
            info.si_errno = 0;
682
            info.si_code = SEGV_NOOP;
683
            info.si_addr = 0;
684
            gdb_handlesig (env, SIGSEGV);
685
            queue_signal(info.si_signo, &info);
686
            break;
687
        case EXCP0E_PAGE:
688
            info.si_signo = SIGSEGV;
689
            info.si_errno = 0;
690
            if (!(env->error_code & 1))
691
                info.si_code = SEGV_MAPERR;
692
            else
693
                info.si_code = SEGV_ACCERR;
694
            info.si_addr = (void*)env->cr[2];
695
            gdb_handlesig (env, SIGSEGV);
696
            queue_signal(info.si_signo, &info);
697
            break;
698
        case EXCP00_DIVZ:
699
            /* division by zero */
700
            info.si_signo = SIGFPE;
701
            info.si_errno = 0;
702
            info.si_code = FPE_INTDIV;
703
            info.si_addr = (void*)env->eip;
704
            gdb_handlesig (env, SIGFPE);
705
            queue_signal(info.si_signo, &info);
706
            break;
707
        case EXCP01_SSTP:
708
        case EXCP03_INT3:
709
            info.si_signo = SIGTRAP;
710
            info.si_errno = 0;
711
            info.si_code = TRAP_BRKPT;
712
            info.si_addr = (void*)env->eip;
713
            gdb_handlesig (env, SIGTRAP);
714
            queue_signal(info.si_signo, &info);
715
            break;
716
        case EXCP04_INTO:
717
        case EXCP05_BOUND:
718
            info.si_signo = SIGSEGV;
719
            info.si_errno = 0;
720
            info.si_code = SEGV_NOOP;
721
            info.si_addr = 0;
722
            gdb_handlesig (env, SIGSEGV);
723
            queue_signal(info.si_signo, &info);
724
            break;
725
        case EXCP06_ILLOP:
726
            info.si_signo = SIGILL;
727
            info.si_errno = 0;
728
            info.si_code = ILL_ILLOPN;
729
            info.si_addr = (void*)env->eip;
730
            gdb_handlesig (env, SIGILL);
731
            queue_signal(info.si_signo, &info);
732
            break;
733
        case EXCP_INTERRUPT:
734
            /* just indicate that signals should be handled asap */
735
            break;
736
        case EXCP_DEBUG:
737
            {
738
                int sig;
739

    
740
                sig = gdb_handlesig (env, SIGTRAP);
741
                if (sig)
742
                  {
743
                    info.si_signo = sig;
744
                    info.si_errno = 0;
745
                    info.si_code = TRAP_BRKPT;
746
                    queue_signal(info.si_signo, &info);
747
                  }
748
            }
749
            break;
750
        default:
751
            pc = (void*)(env->segs[R_CS].base + env->eip);
752
            fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
753
                    (long)pc, trapnr);
754
            abort();
755
        }
756
        process_pending_signals(env);
757
    }
758
}
759
#endif
760

    
761
void usage(void)
762
{
763
    printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
764
           "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
765
           "Darwin CPU emulator (compiled for %s emulation)\n"
766
           "\n"
767
           "-h           print this help\n"
768
           "-L path      set the %s library path (default='%s')\n"
769
           "-s size      set the stack size in bytes (default=%ld)\n"
770
           "\n"
771
           "debug options:\n"
772
#ifdef USE_CODE_COPY
773
           "-no-code-copy   disable code copy acceleration\n"
774
#endif
775
           "-d options   activate log (logfile='%s')\n"
776
           "-g wait for gdb on port 1234\n"
777
           "-p pagesize  set the host page size to 'pagesize'\n",
778
           TARGET_ARCH,
779
           TARGET_ARCH,
780
           interp_prefix,
781
           stack_size,
782
           DEBUG_LOGFILE);
783
    _exit(1);
784
}
785

    
786
/* XXX: currently only used for async signals (see signal.c) */
787
CPUState *global_env;
788
/* used only if single thread */
789
CPUState *cpu_single_env = NULL;
790

    
791
/* used to free thread contexts */
792
TaskState *first_task_state;
793

    
794
int main(int argc, char **argv)
795
{
796
    const char *filename;
797
    struct target_pt_regs regs1, *regs = &regs1;
798
    TaskState ts1, *ts = &ts1;
799
    CPUState *env;
800
    int optind;
801
    short use_gdbstub = 0;
802
    const char *r;
803

    
804
    if (argc <= 1)
805
        usage();
806

    
807
    /* init debug */
808
    cpu_set_log_filename(DEBUG_LOGFILE);
809

    
810
    optind = 1;
811
    for(;;) {
812
        if (optind >= argc)
813
            break;
814
        r = argv[optind];
815
        if (r[0] != '-')
816
            break;
817
        optind++;
818
        r++;
819
        if (!strcmp(r, "-")) {
820
            break;
821
        } else if (!strcmp(r, "d")) {
822
            int mask;
823
            CPULogItem *item;
824

    
825
        if (optind >= argc)
826
        break;
827

    
828
        r = argv[optind++];
829
            mask = cpu_str_to_log_mask(r);
830
            if (!mask) {
831
                printf("Log items (comma separated):\n");
832
                for(item = cpu_log_items; item->mask != 0; item++) {
833
                    printf("%-10s %s\n", item->name, item->help);
834
                }
835
                exit(1);
836
            }
837
            cpu_set_log(mask);
838
        } else if (!strcmp(r, "s")) {
839
            r = argv[optind++];
840
            stack_size = strtol(r, (char **)&r, 0);
841
            if (stack_size <= 0)
842
                usage();
843
            if (*r == 'M')
844
                stack_size *= 1024 * 1024;
845
            else if (*r == 'k' || *r == 'K')
846
                stack_size *= 1024;
847
        } else if (!strcmp(r, "L")) {
848
            interp_prefix = argv[optind++];
849
        } else if (!strcmp(r, "p")) {
850
            qemu_host_page_size = atoi(argv[optind++]);
851
            if (qemu_host_page_size == 0 ||
852
                (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
853
                fprintf(stderr, "page size must be a power of two\n");
854
                exit(1);
855
            }
856
        } else
857
        if (!strcmp(r, "g")) {
858
            use_gdbstub = 1;
859
        } else
860
#ifdef USE_CODE_COPY
861
        if (!strcmp(r, "no-code-copy")) {
862
            code_copy_enabled = 0;
863
        } else
864
#endif
865
        {
866
            usage();
867
        }
868
    }
869
    if (optind >= argc)
870
        usage();
871
    filename = argv[optind];
872

    
873
    /* Zero out regs */
874
    memset(regs, 0, sizeof(struct target_pt_regs));
875

    
876
    /* NOTE: we need to init the CPU at this stage to get
877
       qemu_host_page_size */
878
    env = cpu_init();
879

    
880
    printf("Starting %s with qemu\n----------------\n", filename);
881

    
882
    commpage_init();
883

    
884
    if (mach_exec(filename, argv+optind, environ, regs) != 0) {
885
    printf("Error loading %s\n", filename);
886
    _exit(1);
887
    }
888

    
889
    syscall_init();
890
    signal_init();
891
    global_env = env;
892

    
893
    /* build Task State */
894
    memset(ts, 0, sizeof(TaskState));
895
    env->opaque = ts;
896
    ts->used = 1;
897
    env->user_mode_only = 1;
898

    
899
#if defined(TARGET_I386)
900
    cpu_x86_set_cpl(env, 3);
901

    
902
    env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
903
    env->hflags |= HF_PE_MASK;
904

    
905
    if (env->cpuid_features & CPUID_SSE) {
906
        env->cr[4] |= CR4_OSFXSR_MASK;
907
        env->hflags |= HF_OSFXSR_MASK;
908
    }
909

    
910
    /* flags setup : we activate the IRQs by default as in user mode */
911
    env->eflags |= IF_MASK;
912

    
913
    /* darwin register setup */
914
    env->regs[R_EAX] = regs->eax;
915
    env->regs[R_EBX] = regs->ebx;
916
    env->regs[R_ECX] = regs->ecx;
917
    env->regs[R_EDX] = regs->edx;
918
    env->regs[R_ESI] = regs->esi;
919
    env->regs[R_EDI] = regs->edi;
920
    env->regs[R_EBP] = regs->ebp;
921
    env->regs[R_ESP] = regs->esp;
922
    env->eip = regs->eip;
923

    
924
    /* Darwin LDT setup */
925
    /* 2 - User code segment
926
       3 - User data segment
927
       4 - User cthread */
928
    bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0]));
929
    env->ldt.base = (uint32_t) ldt_table;
930
    env->ldt.limit = sizeof(ldt_table) - 1;
931

    
932
    write_dt(ldt_table + 2, 0, 0xfffff,
933
             DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
934
             (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
935
    write_dt(ldt_table + 3, 0, 0xfffff,
936
             DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
937
             (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
938
    write_dt(ldt_table + 4, 0, 0xfffff,
939
             DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
940
             (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
941

    
942
    /* Darwin GDT setup.
943
     * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
944
       now everything is done via  int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
945
    bzero(gdt_table, sizeof(gdt_table));
946
    env->gdt.base = (uint32_t)gdt_table;
947
    env->gdt.limit = sizeof(gdt_table) - 1;
948

    
949
    /* Set up a back door to handle sysenter syscalls (unix) */
950
    char * syscallbackdoor = malloc(64);
951
    page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID);
952

    
953
    int i = 0;
954
    syscallbackdoor[i++] = 0xcd;
955
    syscallbackdoor[i++] = 0x90; /* int 0x90 */
956
    syscallbackdoor[i++] = 0x0F;
957
    syscallbackdoor[i++] = 0x35; /* sysexit */
958

    
959
    /* Darwin sysenter/sysexit setup */
960
    env->sysenter_cs = 0x1; //XXX
961
    env->sysenter_eip = (int)syscallbackdoor;
962
    env->sysenter_esp = (int)malloc(64);
963

    
964
    /* Darwin TSS setup
965
       This must match up with GDT[4] */
966
    env->tr.base = (uint32_t) tss;
967
    env->tr.limit = sizeof(tss) - 1;
968
    env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
969
    stw(tss + 2, 0x10);  // ss0 = 0x10 = GDT[2] = Kernel Data Segment
970

    
971
    /* Darwin interrupt setup */
972
    bzero(idt_table, sizeof(idt_table));
973
    env->idt.base = (uint32_t) idt_table;
974
    env->idt.limit = sizeof(idt_table) - 1;
975
    set_idt(0, 0);
976
    set_idt(1, 0);
977
    set_idt(2, 0);
978
    set_idt(3, 3);
979
    set_idt(4, 3);
980
    set_idt(5, 3);
981
    set_idt(6, 0);
982
    set_idt(7, 0);
983
    set_idt(8, 0);
984
    set_idt(9, 0);
985
    set_idt(10, 0);
986
    set_idt(11, 0);
987
    set_idt(12, 0);
988
    set_idt(13, 0);
989
    set_idt(14, 0);
990
    set_idt(15, 0);
991
    set_idt(16, 0);
992
    set_idt(17, 0);
993
    set_idt(18, 0);
994
    set_idt(19, 0);
995
    /* Syscalls are done via
996
        int 0x80 (unix) (rarely used)
997
        int 0x81 (mach)
998
        int 0x82 (thread)
999
        int 0x83 (diag) (not handled here)
1000
        sysenter/sysexit (unix) -> we redirect that to int 0x90 */
1001
    set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */
1002
    set_idt(0x80, 3); /* Unix Syscall */
1003
    set_idt(0x81, 3); /* Mach Syscalls */
1004
    set_idt(0x82, 3); /* thread Syscalls */
1005

    
1006
    set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */
1007

    
1008

    
1009
    cpu_x86_load_seg(env, R_CS, __USER_CS);
1010
    cpu_x86_load_seg(env, R_DS, __USER_DS);
1011
    cpu_x86_load_seg(env, R_ES, __USER_DS);
1012
    cpu_x86_load_seg(env, R_SS, __USER_DS);
1013
    cpu_x86_load_seg(env, R_FS, __USER_DS);
1014
    cpu_x86_load_seg(env, R_GS, __USER_DS);
1015

    
1016
#elif defined(TARGET_PPC)
1017
    {
1018
        int i;
1019
        env->nip = regs->nip;
1020
        for(i = 0; i < 32; i++) {
1021
            env->gpr[i] = regs->gpr[i];
1022
        }
1023
    }
1024
#else
1025
#error unsupported target CPU
1026
#endif
1027

    
1028
    if (use_gdbstub) {
1029
        printf("Waiting for gdb Connection on port 1234...\n");
1030
        gdbserver_start (1234);
1031
        gdb_handlesig(env, 0);
1032
    }
1033

    
1034
    cpu_loop(env);
1035
    /* never exits */
1036
    return 0;
1037
}