2 * Alpha emulation cpu definitions for qemu.
4 * Copyright (c) 2007 Jocelyn Mayer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #if !defined (__CPU_ALPHA_H__)
22 #define __CPU_ALPHA_H__
26 #define TARGET_LONG_BITS 64
33 #include "softfloat.h"
35 /* XXX: put this in a common place */
36 #define likely(x) __builtin_expect(!!(x), 1)
37 #define unlikely(x) __builtin_expect(!!(x), 0)
39 #define TARGET_HAS_ICE 1
41 #define ELF_MACHINE EM_ALPHA
43 #define ICACHE_LINE_SIZE 32
44 #define DCACHE_LINE_SIZE 32
46 #define TARGET_PAGE_BITS 12
50 /* Alpha major type */
56 ALPHA_EV5 = 5, /* 21164 */
57 ALPHA_EV45 = 6, /* 21064A */
58 ALPHA_EV56 = 7, /* 21164A */
69 ALPHA_LCA_1 = 1, /* 21066 */
70 ALPHA_LCA_2 = 2, /* 20166 */
71 ALPHA_LCA_3 = 3, /* 21068 */
72 ALPHA_LCA_4 = 4, /* 21068 */
73 ALPHA_LCA_5 = 5, /* 21066A */
74 ALPHA_LCA_6 = 6, /* 21068A */
79 ALPHA_EV5_1 = 1, /* Rev BA, CA */
80 ALPHA_EV5_2 = 2, /* Rev DA, EA */
81 ALPHA_EV5_3 = 3, /* Pass 3 */
82 ALPHA_EV5_4 = 4, /* Pass 3.2 */
83 ALPHA_EV5_5 = 5, /* Pass 4 */
88 ALPHA_EV45_1 = 1, /* Pass 1 */
89 ALPHA_EV45_2 = 2, /* Pass 1.1 */
90 ALPHA_EV45_3 = 3, /* Pass 2 */
95 ALPHA_EV56_1 = 1, /* Pass 1 */
96 ALPHA_EV56_2 = 2, /* Pass 2 */
100 IMPLVER_2106x = 0, /* EV4, EV45 & LCA45 */
101 IMPLVER_21164 = 1, /* EV5, EV56 & PCA45 */
102 IMPLVER_21264 = 2, /* EV6, EV67 & EV68x */
103 IMPLVER_21364 = 3, /* EV7 & EV79 */
107 AMASK_BWX = 0x00000001,
108 AMASK_FIX = 0x00000002,
109 AMASK_CIX = 0x00000004,
110 AMASK_MVI = 0x00000100,
111 AMASK_TRAP = 0x00000200,
112 AMASK_PREFETCH = 0x00001000,
116 VAX_ROUND_NORMAL = 0,
121 IEEE_ROUND_NORMAL = 0,
128 /* IEEE floating-point operations encoding */
140 FP_ROUND_CHOPPED = 0x0,
141 FP_ROUND_MINUS = 0x1,
142 FP_ROUND_NORMAL = 0x2,
143 FP_ROUND_DYNAMIC = 0x3,
146 /* Internal processor registers */
147 /* XXX: TOFIX: most of those registers are implementation dependant */
168 IPR_HW_INT_CLR = 0x0E,
174 IPR_IC_FLUSH_ASM = 0x12,
184 IPR_DTB_ALTMODE = 0xA6,
231 typedef struct CPUAlphaState CPUAlphaState;
233 typedef struct pal_handler_t pal_handler_t;
234 struct pal_handler_t {
236 void (*reset)(CPUAlphaState *env);
237 /* Uncorrectable hardware error */
238 void (*machine_check)(CPUAlphaState *env);
239 /* Arithmetic exception */
240 void (*arithmetic)(CPUAlphaState *env);
241 /* Interrupt / correctable hardware error */
242 void (*interrupt)(CPUAlphaState *env);
244 void (*dfault)(CPUAlphaState *env);
246 void (*dtb_miss_pal)(CPUAlphaState *env);
247 /* DTB miss native */
248 void (*dtb_miss_native)(CPUAlphaState *env);
249 /* Unaligned access */
250 void (*unalign)(CPUAlphaState *env);
252 void (*itb_miss)(CPUAlphaState *env);
253 /* Instruction stream access violation */
254 void (*itb_acv)(CPUAlphaState *env);
255 /* Reserved or privileged opcode */
256 void (*opcdec)(CPUAlphaState *env);
257 /* Floating point exception */
258 void (*fen)(CPUAlphaState *env);
259 /* Call pal instruction */
260 void (*call_pal)(CPUAlphaState *env, uint32_t palcode);
263 struct CPUAlphaState {
266 float_status fp_status;
271 uint64_t ipr[IPR_LAST];
274 int saved_mode; /* Used for HW_LD / HW_ST */
276 #if TARGET_LONG_BITS > HOST_LONG_BITS
277 /* temporary fixed-point registers
278 * used to emulate 64 bits target on 32 bits hosts
280 target_ulong t0, t1, t2;
283 double ft0, ft1, ft2;
285 /* Those resources are used only in Qemu core */
289 int user_mode_only; /* user mode only simulation */
295 int interrupt_request;
300 pal_handler_t *pal_handler;
306 FEATURE_ASN = 0x00000001,
307 FEATURE_SPS = 0x00000002,
308 FEATURE_VIRBND = 0x00000004,
309 FEATURE_TBCHK = 0x00000008,
316 EXCP_HW_INTERRUPT = 0x00E0,
317 EXCP_DFAULT = 0x01E0,
318 EXCP_DTB_MISS_PAL = 0x09E0,
319 EXCP_ITB_MISS = 0x03E0,
320 EXCP_ITB_ACV = 0x07E0,
321 EXCP_DTB_MISS_NATIVE = 0x08E0,
322 EXCP_UNALIGN = 0x11E0,
323 EXCP_OPCDEC = 0x13E0,
325 EXCP_CALL_PAL = 0x2000,
326 EXCP_CALL_PALP = 0x3000,
327 EXCP_CALL_PALE = 0x4000,
328 /* Pseudo exception for console */
329 EXCP_CONSOLE_DISPATCH = 0x4001,
330 EXCP_CONSOLE_FIXUP = 0x4002,
333 /* Arithmetic exception */
339 PALCODE_CALL = 0x00000000,
340 PALCODE_LD = 0x01000000,
341 PALCODE_ST = 0x02000000,
342 PALCODE_MFPR = 0x03000000,
343 PALCODE_MTPR = 0x04000000,
344 PALCODE_REI = 0x05000000,
345 PALCODE_INIT = 0xF0000000,
385 CPUAlphaState * cpu_alpha_init (void);
386 int cpu_alpha_exec(CPUAlphaState *s);
387 /* you can call this signal handler from your SIGBUS and SIGSEGV
388 signal handlers to inform the virtual CPU of exceptions. non zero
389 is returned if the signal was handled by the virtual CPU. */
390 int cpu_alpha_signal_handler(int host_signum, void *pinfo,
392 int cpu_alpha_mfpr (CPUState *env, int iprn, uint64_t *valp);
393 int cpu_alpha_mtpr (CPUState *env, int iprn, uint64_t val, uint64_t *oldvalp);
394 void cpu_loop_exit (void);
395 void pal_init (CPUState *env);
396 void call_pal (CPUState *env, int palcode);
398 #endif /* !defined (__CPU_ALPHA_H__) */