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 #define TARGET_HAS_ICE 1
37 #define ELF_MACHINE EM_ALPHA
39 #define ICACHE_LINE_SIZE 32
40 #define DCACHE_LINE_SIZE 32
42 #define TARGET_PAGE_BITS 12
46 /* Alpha major type */
52 ALPHA_EV5 = 5, /* 21164 */
53 ALPHA_EV45 = 6, /* 21064A */
54 ALPHA_EV56 = 7, /* 21164A */
65 ALPHA_LCA_1 = 1, /* 21066 */
66 ALPHA_LCA_2 = 2, /* 20166 */
67 ALPHA_LCA_3 = 3, /* 21068 */
68 ALPHA_LCA_4 = 4, /* 21068 */
69 ALPHA_LCA_5 = 5, /* 21066A */
70 ALPHA_LCA_6 = 6, /* 21068A */
75 ALPHA_EV5_1 = 1, /* Rev BA, CA */
76 ALPHA_EV5_2 = 2, /* Rev DA, EA */
77 ALPHA_EV5_3 = 3, /* Pass 3 */
78 ALPHA_EV5_4 = 4, /* Pass 3.2 */
79 ALPHA_EV5_5 = 5, /* Pass 4 */
84 ALPHA_EV45_1 = 1, /* Pass 1 */
85 ALPHA_EV45_2 = 2, /* Pass 1.1 */
86 ALPHA_EV45_3 = 3, /* Pass 2 */
91 ALPHA_EV56_1 = 1, /* Pass 1 */
92 ALPHA_EV56_2 = 2, /* Pass 2 */
96 IMPLVER_2106x = 0, /* EV4, EV45 & LCA45 */
97 IMPLVER_21164 = 1, /* EV5, EV56 & PCA45 */
98 IMPLVER_21264 = 2, /* EV6, EV67 & EV68x */
99 IMPLVER_21364 = 3, /* EV7 & EV79 */
103 AMASK_BWX = 0x00000001,
104 AMASK_FIX = 0x00000002,
105 AMASK_CIX = 0x00000004,
106 AMASK_MVI = 0x00000100,
107 AMASK_TRAP = 0x00000200,
108 AMASK_PREFETCH = 0x00001000,
112 VAX_ROUND_NORMAL = 0,
117 IEEE_ROUND_NORMAL = 0,
124 /* IEEE floating-point operations encoding */
136 FP_ROUND_CHOPPED = 0x0,
137 FP_ROUND_MINUS = 0x1,
138 FP_ROUND_NORMAL = 0x2,
139 FP_ROUND_DYNAMIC = 0x3,
142 /* Internal processor registers */
143 /* XXX: TOFIX: most of those registers are implementation dependant */
164 IPR_HW_INT_CLR = 0x0E,
170 IPR_IC_FLUSH_ASM = 0x12,
180 IPR_DTB_ALTMODE = 0xA6,
227 typedef struct CPUAlphaState CPUAlphaState;
229 typedef struct pal_handler_t pal_handler_t;
230 struct pal_handler_t {
232 void (*reset)(CPUAlphaState *env);
233 /* Uncorrectable hardware error */
234 void (*machine_check)(CPUAlphaState *env);
235 /* Arithmetic exception */
236 void (*arithmetic)(CPUAlphaState *env);
237 /* Interrupt / correctable hardware error */
238 void (*interrupt)(CPUAlphaState *env);
240 void (*dfault)(CPUAlphaState *env);
242 void (*dtb_miss_pal)(CPUAlphaState *env);
243 /* DTB miss native */
244 void (*dtb_miss_native)(CPUAlphaState *env);
245 /* Unaligned access */
246 void (*unalign)(CPUAlphaState *env);
248 void (*itb_miss)(CPUAlphaState *env);
249 /* Instruction stream access violation */
250 void (*itb_acv)(CPUAlphaState *env);
251 /* Reserved or privileged opcode */
252 void (*opcdec)(CPUAlphaState *env);
253 /* Floating point exception */
254 void (*fen)(CPUAlphaState *env);
255 /* Call pal instruction */
256 void (*call_pal)(CPUAlphaState *env, uint32_t palcode);
259 struct CPUAlphaState {
262 float_status fp_status;
267 uint64_t ipr[IPR_LAST];
270 int saved_mode; /* Used for HW_LD / HW_ST */
272 #if TARGET_LONG_BITS > HOST_LONG_BITS
273 /* temporary fixed-point registers
274 * used to emulate 64 bits target on 32 bits hosts
276 target_ulong t0, t1, t2;
279 double ft0, ft1, ft2;
281 /* Those resources are used only in Qemu core */
285 int user_mode_only; /* user mode only simulation */
291 int interrupt_request;
296 pal_handler_t *pal_handler;
299 #define CPUState CPUAlphaState
300 #define cpu_init cpu_alpha_init
301 #define cpu_exec cpu_alpha_exec
302 #define cpu_gen_code cpu_alpha_gen_code
303 #define cpu_signal_handler cpu_alpha_signal_handler
308 FEATURE_ASN = 0x00000001,
309 FEATURE_SPS = 0x00000002,
310 FEATURE_VIRBND = 0x00000004,
311 FEATURE_TBCHK = 0x00000008,
318 EXCP_HW_INTERRUPT = 0x00E0,
319 EXCP_DFAULT = 0x01E0,
320 EXCP_DTB_MISS_PAL = 0x09E0,
321 EXCP_ITB_MISS = 0x03E0,
322 EXCP_ITB_ACV = 0x07E0,
323 EXCP_DTB_MISS_NATIVE = 0x08E0,
324 EXCP_UNALIGN = 0x11E0,
325 EXCP_OPCDEC = 0x13E0,
327 EXCP_CALL_PAL = 0x2000,
328 EXCP_CALL_PALP = 0x3000,
329 EXCP_CALL_PALE = 0x4000,
330 /* Pseudo exception for console */
331 EXCP_CONSOLE_DISPATCH = 0x4001,
332 EXCP_CONSOLE_FIXUP = 0x4002,
335 /* Arithmetic exception */
341 PALCODE_CALL = 0x00000000,
342 PALCODE_LD = 0x01000000,
343 PALCODE_ST = 0x02000000,
344 PALCODE_MFPR = 0x03000000,
345 PALCODE_MTPR = 0x04000000,
346 PALCODE_REI = 0x05000000,
347 PALCODE_INIT = 0xF0000000,
387 CPUAlphaState * cpu_alpha_init (void);
388 int cpu_alpha_exec(CPUAlphaState *s);
389 /* you can call this signal handler from your SIGBUS and SIGSEGV
390 signal handlers to inform the virtual CPU of exceptions. non zero
391 is returned if the signal was handled by the virtual CPU. */
392 int cpu_alpha_signal_handler(int host_signum, void *pinfo,
394 int cpu_alpha_mfpr (CPUState *env, int iprn, uint64_t *valp);
395 int cpu_alpha_mtpr (CPUState *env, int iprn, uint64_t val, uint64_t *oldvalp);
396 void cpu_loop_exit (void);
397 void pal_init (CPUState *env);
398 void call_pal (CPUState *env, int palcode);
400 #endif /* !defined (__CPU_ALPHA_H__) */