2 * PA-RISC emulation cpu definitions for qemu.
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, see <http://www.gnu.org/licenses/>.
23 #include "qemu-common.h"
27 #define TARGET_LONG_BITS 64
28 #define TARGET_VIRT_ADDR_SPACE_BITS 64
29 #define TARGET_REGISTER_BITS 64
30 #define TARGET_PHYS_ADDR_SPACE_BITS 64
31 #elif defined(CONFIG_USER_ONLY)
32 #define TARGET_LONG_BITS 32
33 #define TARGET_VIRT_ADDR_SPACE_BITS 32
34 #define TARGET_REGISTER_BITS 32
35 #define TARGET_PHYS_ADDR_SPACE_BITS 32
37 /* In order to form the GVA from space:offset,
38 we need a 64-bit virtual address space. */
39 #define TARGET_LONG_BITS 64
40 #define TARGET_VIRT_ADDR_SPACE_BITS 64
41 #define TARGET_REGISTER_BITS 32
42 #define TARGET_PHYS_ADDR_SPACE_BITS 32
45 #define CPUArchState struct CPUHPPAState
47 #include "exec/cpu-defs.h"
48 #include "fpu/softfloat.h"
50 #define TARGET_PAGE_BITS 12
53 #define NB_MMU_MODES 5
54 #define MMU_KERNEL_IDX 0
55 #define MMU_USER_IDX 3
56 #define MMU_PHYS_IDX 4
57 #define TARGET_INSN_START_EXTRA_WORDS 1
59 /* Hardware exceptions, interupts, faults, and traps. */
60 #define EXCP_HPMC 1 /* high priority machine check */
61 #define EXCP_POWER_FAIL 2
62 #define EXCP_RC 3 /* recovery counter */
63 #define EXCP_EXT_INTERRUPT 4 /* external interrupt */
64 #define EXCP_LPMC 5 /* low priority machine check */
65 #define EXCP_ITLB_MISS 6 /* itlb miss / instruction page fault */
66 #define EXCP_IMP 7 /* instruction memory protection trap */
67 #define EXCP_ILL 8 /* illegal instruction trap */
68 #define EXCP_BREAK 9 /* break instruction */
69 #define EXCP_PRIV_OPR 10 /* privileged operation trap */
70 #define EXCP_PRIV_REG 11 /* privileged register trap */
71 #define EXCP_OVERFLOW 12 /* signed overflow trap */
72 #define EXCP_COND 13 /* trap-on-condition */
73 #define EXCP_ASSIST 14 /* assist exception trap */
74 #define EXCP_DTLB_MISS 15 /* dtlb miss / data page fault */
75 #define EXCP_NA_ITLB_MISS 16 /* non-access itlb miss */
76 #define EXCP_NA_DTLB_MISS 17 /* non-access dtlb miss */
77 #define EXCP_DMP 18 /* data memory protection trap */
78 #define EXCP_DMB 19 /* data memory break trap */
79 #define EXCP_TLB_DIRTY 20 /* tlb dirty bit trap */
80 #define EXCP_PAGE_REF 21 /* page reference trap */
81 #define EXCP_ASSIST_EMU 22 /* assist emulation trap */
82 #define EXCP_HPT 23 /* high-privilege transfer trap */
83 #define EXCP_LPT 24 /* low-privilege transfer trap */
84 #define EXCP_TB 25 /* taken branch trap */
85 #define EXCP_DMAR 26 /* data memory access rights trap */
86 #define EXCP_DMPI 27 /* data memory protection id trap */
87 #define EXCP_UNALIGN 28 /* unaligned data reference trap */
88 #define EXCP_PER_INTERRUPT 29 /* performance monitor interrupt */
90 /* Exceptions for linux-user emulation. */
91 #define EXCP_SYSCALL 30
92 #define EXCP_SYSCALL_LWS 31
94 /* Taken from Linux kernel: arch/parisc/include/asm/psw.h */
95 #define PSW_I 0x00000001
96 #define PSW_D 0x00000002
97 #define PSW_P 0x00000004
98 #define PSW_Q 0x00000008
99 #define PSW_R 0x00000010
100 #define PSW_F 0x00000020
101 #define PSW_G 0x00000040 /* PA1.x only */
102 #define PSW_O 0x00000080 /* PA2.0 only */
103 #define PSW_CB 0x0000ff00
104 #define PSW_M 0x00010000
105 #define PSW_V 0x00020000
106 #define PSW_C 0x00040000
107 #define PSW_B 0x00080000
108 #define PSW_X 0x00100000
109 #define PSW_N 0x00200000
110 #define PSW_L 0x00400000
111 #define PSW_H 0x00800000
112 #define PSW_T 0x01000000
113 #define PSW_S 0x02000000
114 #define PSW_E 0x04000000
116 #define PSW_W 0x08000000 /* PA2.0 only */
120 #define PSW_Z 0x40000000 /* PA1.x only */
121 #define PSW_Y 0x80000000 /* PA1.x only */
123 #define PSW_SM (PSW_W | PSW_E | PSW_O | PSW_G | PSW_F \
124 | PSW_R | PSW_Q | PSW_P | PSW_D | PSW_I)
126 /* ssm/rsm instructions number PSW_W and PSW_E differently */
127 #define PSW_SM_I PSW_I /* Enable External Interrupts */
128 #define PSW_SM_D PSW_D
129 #define PSW_SM_P PSW_P
130 #define PSW_SM_Q PSW_Q /* Enable Interrupt State Collection */
131 #define PSW_SM_R PSW_R /* Enable Recover Counter Trap */
133 #define PSW_SM_E 0x100
134 #define PSW_SM_W 0x200 /* PA2.0 only : Enable Wide Mode */
154 typedef struct CPUHPPAState CPUHPPAState;
156 #if TARGET_REGISTER_BITS == 32
157 typedef uint32_t target_ureg;
158 typedef int32_t target_sreg;
159 #define TREG_FMT_lx "%08"PRIx32
160 #define TREG_FMT_ld "%"PRId32
162 typedef uint64_t target_ureg;
163 typedef int64_t target_sreg;
164 #define TREG_FMT_lx "%016"PRIx64
165 #define TREG_FMT_ld "%"PRId64
176 unsigned page_size : 4;
177 unsigned ar_type : 3;
180 unsigned entry_valid : 1;
181 unsigned access_id : 16;
184 struct CPUHPPAState {
187 uint64_t sr[8]; /* stored shifted into place for gva */
189 target_ureg psw; /* All psw bits except the following: */
190 target_ureg psw_n; /* boolean */
191 target_sreg psw_v; /* in most significant bit */
193 /* Splitting the carry-borrow field into the MSB and "the rest", allows
194 * for "the rest" to be deleted when it is unused, but the MSB is in use.
195 * In addition, it's easier to compute carry-in for bit B+1 than it is to
196 * compute carry-out for bit B (3 vs 4 insns for addition, assuming the
197 * host has the appropriate add-with-carry insn to compute the msb).
198 * Therefore the carry bits are stored as: cb_msb : cb & 0x11111110.
200 target_ureg psw_cb; /* in least significant bit of next nibble */
201 target_ureg psw_cb_msb; /* boolean */
203 target_ureg iaoq_f; /* front */
204 target_ureg iaoq_b; /* back, aka next instruction */
208 uint32_t fr0_shadow; /* flags, c, ca/cq, rm, d, enables */
209 float_status fp_status;
211 target_ureg cr[32]; /* control registers */
212 target_ureg cr_back[2]; /* back of cr17/cr18 */
213 target_ureg shadow[7]; /* shadow registers */
215 /* Those resources are used only in QEMU core */
218 /* ??? The number of entries isn't specified by the architecture. */
219 /* ??? Implement a unified itlb/dtlb for the moment. */
220 /* ??? We should use a more intelligent data structure. */
221 hppa_tlb_entry tlb[256];
227 * @env: #CPUHPPAState
237 QEMUTimer *alarm_timer;
240 static inline HPPACPU *hppa_env_get_cpu(CPUHPPAState *env)
242 return container_of(env, HPPACPU, env);
245 #define ENV_GET_CPU(e) CPU(hppa_env_get_cpu(e))
246 #define ENV_OFFSET offsetof(HPPACPU, env)
248 #include "exec/cpu-all.h"
250 static inline int cpu_mmu_index(CPUHPPAState *env, bool ifetch)
252 #ifdef CONFIG_USER_ONLY
255 if (env->psw & (ifetch ? PSW_C : PSW_D)) {
256 return env->iaoq_f & 3;
258 return MMU_PHYS_IDX; /* mmu disabled */
262 void hppa_translate_init(void);
264 #define cpu_init(cpu_model) cpu_generic_init(TYPE_HPPA_CPU, cpu_model)
266 void hppa_cpu_list(FILE *f, fprintf_function cpu_fprintf);
268 static inline target_ulong hppa_form_gva_psw(target_ureg psw, uint64_t spc,
271 #ifdef CONFIG_USER_ONLY
274 off &= (psw & PSW_W ? 0x3fffffffffffffffull : 0xffffffffull);
279 static inline target_ulong hppa_form_gva(CPUHPPAState *env, uint64_t spc,
282 return hppa_form_gva_psw(env->psw, spc, off);
285 /* Since PSW_{I,CB} will never need to be in tb->flags, reuse them.
286 * TB_FLAG_SR_SAME indicates that SR4 through SR7 all contain the
289 #define TB_FLAG_SR_SAME PSW_I
290 #define TB_FLAG_PRIV_SHIFT 8
292 static inline void cpu_get_tb_cpu_state(CPUHPPAState *env, target_ulong *pc,
293 target_ulong *cs_base,
296 uint32_t flags = env->psw_n * PSW_N;
298 /* TB lookup assumes that PC contains the complete virtual address.
299 If we leave space+offset separate, we'll get ITLB misses to an
300 incomplete virtual address. This also means that we must separate
301 out current cpu priviledge from the low bits of IAOQ_F. */
302 #ifdef CONFIG_USER_ONLY
304 *cs_base = env->iaoq_b;
306 /* ??? E, T, H, L, B, P bits need to be here, when implemented. */
307 flags |= env->psw & (PSW_W | PSW_C | PSW_D);
308 flags |= (env->iaoq_f & 3) << TB_FLAG_PRIV_SHIFT;
310 *pc = (env->psw & PSW_C
311 ? hppa_form_gva_psw(env->psw, env->iasq_f, env->iaoq_f & -4)
313 *cs_base = env->iasq_f;
315 /* Insert a difference between IAOQ_B and IAOQ_F within the otherwise zero
316 low 32-bits of CS_BASE. This will succeed for all direct branches,
317 which is the primary case we care about -- using goto_tb within a page.
318 Failure is indicated by a zero difference. */
319 if (env->iasq_f == env->iasq_b) {
320 target_sreg diff = env->iaoq_b - env->iaoq_f;
321 if (TARGET_REGISTER_BITS == 32 || diff == (int32_t)diff) {
322 *cs_base |= (uint32_t)diff;
325 if ((env->sr[4] == env->sr[5])
326 & (env->sr[4] == env->sr[6])
327 & (env->sr[4] == env->sr[7])) {
328 flags |= TB_FLAG_SR_SAME;
335 target_ureg cpu_hppa_get_psw(CPUHPPAState *env);
336 void cpu_hppa_put_psw(CPUHPPAState *env, target_ureg);
337 void cpu_hppa_loaded_fr0(CPUHPPAState *env);
339 #define cpu_signal_handler cpu_hppa_signal_handler
341 int cpu_hppa_signal_handler(int host_signum, void *pinfo, void *puc);
342 hwaddr hppa_cpu_get_phys_page_debug(CPUState *cs, vaddr addr);
343 int hppa_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
344 int hppa_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
345 void hppa_cpu_do_interrupt(CPUState *cpu);
346 bool hppa_cpu_exec_interrupt(CPUState *cpu, int int_req);
347 void hppa_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function, int);
348 #ifdef CONFIG_USER_ONLY
349 int hppa_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int size,
352 int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx,
353 int type, hwaddr *pphys, int *pprot);
354 extern const MemoryRegionOps hppa_io_eir_ops;
355 extern const struct VMStateDescription vmstate_hppa_cpu;
356 void hppa_cpu_alarm_timer(void *);
358 void QEMU_NORETURN hppa_dynamic_excp(CPUHPPAState *env, int excp, uintptr_t ra);
360 #endif /* HPPA_CPU_H */