/[gxemul]/trunk/src/include/cpu_sh.h
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Contents of /trunk/src/include/cpu_sh.h

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Revision 38 - (show annotations)
Mon Oct 8 16:21:53 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 9291 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1515 2007/04/14 05:39:46 debug Exp $
20070324	Adding a "--debug" option to the configure script, to disable
		optimizations in unstable development builds.
		Moving out SCSI-specific stuff from diskimage.c into a new
		diskimage_scsicmd.c.
		Applying Hĺvard Eidnes' patch for SCSICDROM_READ_DISKINFO and
		SCSICDROM_READ_TRACKINFO. (Not really tested yet.)
		Implementing disk image "overlays" (to allow simple roll-back
		to previous disk state). Adding a 'V' disk flag for this, and
		updating the man page and misc.html.
20070325	Stability fix to cpu_dyntrans.c, when multiple physical pages
		share the same initial table entry. (The ppp == NULL check
		should be physpage_ofs == 0.) Bug found by analysing GXemul
		against a version patched for Godson.
		Fixing a second occurance of the same problem (also in
		cpu_dyntrans.c).
		Fixing a MAJOR physical page leak in cpu_dyntrans.c; pages
		weren't _added_ to the set of translated pages, they _replaced_
		all previous pages. It's amazing that this bug has been able
		to live for this long. (Triggered when emulating >128MB RAM.)
20070326	Removing the GDB debugging stub support; it was too hackish
		and ugly.
20070328	Moving around some native code generation skeleton code.
20070329	The -lm check in the configure script now also checks for sin()
		in addition to sqrt(). (Thanks to Nigel Horne for noticing that
		sqrt was not enough on Fedora Core 6.) (Not verified yet.)
20070330	Fixing an indexing bug in dev_sh4.c, found by using gcc version
		4.3.0 20070323.
20070331	Some more experimentation with native code generation.
20070404	Attempting to fix some more SH4 SCIF interrupt bugs; rewriting
		the SH interrupt assertion/deassertion code somewhat.
20070410	Splitting src/file.c into separate files in src/file/.
		Cleanup: Removing the dummy TS7200, Walnut, PB1000, and
		Meshcube emulation modes, and dev_epcom and dev_au1x00.
		Removing the experimental CHIP8/RCA180x code; it wasn't really
		working much lately, anyway. It was fun while it lasted.
		Also removing the experimental Transputer CPU support.
20070412	Moving the section about how the dynamic translation system
		works from intro.html to a separate translation.html file.
		Minor SH fixes; attempting to get OpenBSD/landisk to run
		without randomly bugging out, but no success yet.
20070413	SH SCI (serial bit interface) should now work together with a
		(new) RS5C313 clock device (for Landisk emulation).
20070414	Moving Redhat/MIPS down from supported to experimental, in
		guestoses.html.
		Preparing for a new release; doing some regression testing etc.

==============  RELEASE 0.4.5  ==============


1 #ifndef CPU_SH_H
2 #define CPU_SH_H
3
4 /*
5 * Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *
31 * $Id: cpu_sh.h,v 1.39 2007/04/04 19:59:24 debug Exp $
32 *
33 * Note: Many things here are SH4-specific, so it probably doesn't work
34 * for SH3 emulation.
35 */
36
37 #include "interrupt.h"
38 #include "misc.h"
39 #include "sh4_cpu.h"
40
41
42 struct cpu_family;
43
44 /* SH CPU types: */
45 struct sh_cpu_type_def {
46 char *name;
47 int bits;
48 int arch;
49 uint32_t pvr;
50 uint32_t prr;
51 };
52
53 #define SH_CPU_TYPE_DEFS { \
54 { "SH7750", 32, 4, SH4_PVR_SH7750, 0 }, \
55 { "SH7750R", 32, 4, SH4_PVR_SH7750, SH4_PRR_7750R }, \
56 { "SH7751R", 32, 4, SH4_PVR_SH7751, SH4_PRR_7751R }, \
57 { "SH5", 64, 5, 0, 0 }, \
58 { NULL, 0, 0, 0, 0 } }
59
60
61 /*
62 * TODO: Figure out how to nicely support multiple instruction encodings!
63 * For now, I'm reverting this to SH4. SH5 will have to wait until later.
64 */
65
66 #define SH_N_IC_ARGS 2 /* 3 for SH5/SH64 */
67 #define SH_INSTR_ALIGNMENT_SHIFT 1 /* 2 for SH5/SH64 */
68 #define SH_IC_ENTRIES_SHIFT 11 /* 10 for SH5/SH64 */
69 #define SH_IC_ENTRIES_PER_PAGE (1 << SH_IC_ENTRIES_SHIFT)
70 #define SH_PC_TO_IC_ENTRY(a) (((a)>>SH_INSTR_ALIGNMENT_SHIFT) \
71 & (SH_IC_ENTRIES_PER_PAGE-1))
72 #define SH_ADDR_TO_PAGENR(a) ((a) >> (SH_IC_ENTRIES_SHIFT \
73 + SH_INSTR_ALIGNMENT_SHIFT))
74
75 DYNTRANS_MISC_DECLARATIONS(sh,SH,uint32_t)
76
77 #define SH_MAX_VPH_TLB_ENTRIES 128
78
79
80 #define SH_N_GPRS 16
81 #define SH_N_GPRS_BANKED 8
82 #define SH_N_FPRS 16
83
84 #define SH_N_ITLB_ENTRIES 4
85 #define SH_N_UTLB_ENTRIES 64
86
87 #define SH_INVALID_INSTR 0x00fb
88
89
90 struct sh_cpu {
91 struct sh_cpu_type_def cpu_type;
92
93 /* compact = 1 if currently executing 16-bit long opcodes */
94 int compact;
95
96 /* General Purpose Registers: */
97 uint32_t r[SH_N_GPRS];
98 uint32_t r_bank[SH_N_GPRS_BANKED];
99
100 /* Floating-Point Registers: */
101 uint32_t fr[SH_N_FPRS];
102 uint32_t xf[SH_N_FPRS]; /* "Other bank." */
103
104 uint32_t mach; /* Multiply-Accumulate High */
105 uint32_t macl; /* Multiply-Accumulate Low */
106 uint32_t pr; /* Procedure Register */
107 uint32_t fpscr; /* Floating-point Status/Control */
108 uint32_t fpul; /* Floating-point Communication Reg */
109 uint32_t sr; /* Status Register */
110 uint32_t ssr; /* Saved Status Register */
111 uint32_t spc; /* Saved PC */
112 uint32_t gbr; /* Global Base Register */
113 uint32_t vbr; /* Vector Base Register */
114 uint32_t sgr; /* Saved General Register */
115 uint32_t dbr; /* Debug Base Register */
116
117 /* Cache control: */
118 uint32_t ccr; /* Cache Control Register */
119 uint32_t qacr0; /* Queue Address Control Register 0 */
120 uint32_t qacr1; /* Queue Address Control Register 1 */
121
122 /* MMU/TLB registers: */
123 uint32_t pteh; /* Page Table Entry High */
124 uint32_t ptel; /* Page Table Entry Low */
125 uint32_t ptea; /* Page Table Entry A */
126 uint32_t ttb; /* Translation Table Base */
127 uint32_t tea; /* TLB Exception Address Register */
128 uint32_t mmucr; /* MMU Control Register */
129 uint32_t itlb_hi[SH_N_ITLB_ENTRIES];
130 uint32_t itlb_lo[SH_N_ITLB_ENTRIES];
131 uint32_t utlb_hi[SH_N_UTLB_ENTRIES];
132 uint32_t utlb_lo[SH_N_UTLB_ENTRIES];
133
134 /* Exception handling: */
135 uint32_t tra; /* TRAPA Exception Register */
136 uint32_t expevt; /* Exception Event Register */
137 uint32_t intevt; /* Interrupt Event Register */
138
139 /* Interrupt controller: */
140 uint16_t intc_ipra; /* Interrupt Priority Registers */
141 uint16_t intc_iprb;
142 uint16_t intc_iprc;
143 uint16_t intc_iprd;
144 uint32_t intc_intpri00;
145 uint32_t intc_intpri04;
146 uint32_t intc_intpri08;
147 uint32_t intc_intpri0c;
148 uint32_t intc_intreq00;
149 uint32_t intc_intreq04;
150 uint32_t intc_intmsk00;
151 uint32_t intc_intmsk04;
152 /* Cached and calculated values: */
153 uint8_t int_prio_and_pending[0x1000 / 0x20];
154 int16_t int_to_assert; /* Calculated int to assert */
155 int int_level; /* Calculated int level */
156
157 /* Timer/clock functionality: */
158 int pclock;
159
160 /* DMA Controller: (4 channels) */
161 uint32_t dmac_sar[4];
162 uint32_t dmac_dar[4];
163 uint32_t dmac_tcr[4];
164 uint32_t dmac_chcr[4];
165
166
167 /*
168 * Instruction translation cache and Virtual->Physical->Host
169 * address translation:
170 */
171 DYNTRANS_ITC(sh)
172 VPH_TLBS(sh,SH)
173 VPH32(sh,SH,uint64_t,uint8_t)
174 };
175
176
177 /* Status register bits: */
178 #define SH_SR_T 0x00000001 /* True/false */
179 #define SH_SR_S 0x00000002 /* Saturation */
180 #define SH_SR_IMASK 0x000000f0 /* Interrupt mask */
181 #define SH_SR_IMASK_SHIFT 4
182 #define SH_SR_Q 0x00000100 /* State for Divide Step */
183 #define SH_SR_M 0x00000200 /* State for Divide Step */
184 #define SH_SR_FD 0x00008000 /* FPU Disable */
185 #define SH_SR_BL 0x10000000 /* Exception/Interrupt Block */
186 #define SH_SR_RB 0x20000000 /* Register Bank 0/1 */
187 #define SH_SR_MD 0x40000000 /* Privileged Mode */
188
189 /* Floating-point status/control register bits: */
190 #define SH_FPSCR_RM_MASK 0x00000003 /* Rounding Mode */
191 #define SH_FPSCR_RM_NEAREST 0x0 /* Round to nearest */
192 #define SH_FPSCR_RM_ZERO 0x1 /* Round to zero */
193 #define SH_FPSCR_INEXACT 0x00000004 /* Inexact exception */
194 #define SH_FPSCR_UNDERFLOW 0x00000008 /* Underflow exception */
195 #define SH_FPSCR_OVERFLOW 0x00000010 /* Overflow exception */
196 #define SH_FPSCR_DIV_BY_ZERO 0x00000020 /* Div by zero exception */
197 #define SH_FPSCR_INVALID 0x00000040 /* Invalid exception */
198 #define SH_FPSCR_EN_INEXACT 0x00000080 /* Inexact enable */
199 #define SH_FPSCR_EN_UNDERFLOW 0x00000100 /* Underflow enable */
200 #define SH_FPSCR_EN_OVERFLOW 0x00000200 /* Overflow enable */
201 #define SH_FPSCR_EN_DIV_BY_ZERO 0x00000400 /* Div by zero enable */
202 #define SH_FPSCR_EN_INVALID 0x00000800 /* Invalid enable */
203 #define SH_FPSCR_CAUSE_INEXACT 0x00001000 /* Cause Inexact */
204 #define SH_FPSCR_CAUSE_UNDERFLOW 0x00002000 /* Cause Underflow */
205 #define SH_FPSCR_CAUSE_OVERFLOW 0x00004000 /* Cause Overflow */
206 #define SH_FPSCR_CAUSE_DIVBY0 0x00008000 /* Cause Div by 0 */
207 #define SH_FPSCR_CAUSE_INVALID 0x00010000 /* Cause Invalid */
208 #define SH_FPSCR_CAUSE_ERROR 0x00020000 /* Cause Error */
209 #define SH_FPSCR_DN_ZERO 0x00040000 /* Denormalization Mode */
210 #define SH_FPSCR_PR 0x00080000 /* Double-Precision Mode */
211 #define SH_FPSCR_SZ 0x00100000 /* Double-Precision Size */
212 #define SH_FPSCR_FR 0x00200000 /* Register Bank Select */
213
214
215 /* int_prio_and_pending bits: */
216 #define SH_INT_ASSERTED 0x10
217 #define SH_INT_PRIO_MASK 0x0f
218
219 /* cpu_sh.c: */
220 void sh_cpu_interrupt_assert(struct interrupt *interrupt);
221 void sh_cpu_interrupt_deassert(struct interrupt *interrupt);
222 int sh_cpu_instruction_has_delayslot(struct cpu *cpu, unsigned char *ib);
223 int sh_run_instr(struct cpu *cpu);
224 void sh_update_translation_table(struct cpu *cpu, uint64_t vaddr_page,
225 unsigned char *host_page, int writeflag, uint64_t paddr_page);
226 void sh_invalidate_translation_caches(struct cpu *cpu, uint64_t, int);
227 void sh_invalidate_code_translation(struct cpu *cpu, uint64_t, int);
228 int sh32_run_instr(struct cpu *cpu);
229 void sh32_update_translation_table(struct cpu *cpu, uint64_t vaddr_page,
230 unsigned char *host_page, int writeflag, uint64_t paddr_page);
231 void sh32_invalidate_translation_caches(struct cpu *cpu, uint64_t, int);
232 void sh32_invalidate_code_translation(struct cpu *cpu, uint64_t, int);
233 void sh_init_64bit_dummy_tables(struct cpu *cpu);
234 int sh_memory_rw(struct cpu *cpu, struct memory *mem, uint64_t vaddr,
235 unsigned char *data, size_t len, int writeflag, int cache_flags);
236 int sh_cpu_family_init(struct cpu_family *);
237
238 void sh_update_interrupt_priorities(struct cpu *cpu);
239 void sh_update_sr(struct cpu *cpu, uint32_t new_sr);
240 void sh_exception(struct cpu *cpu, int expevt, int intevt, uint32_t vaddr);
241
242 /* memory_sh.c: */
243 int sh_translate_v2p(struct cpu *cpu, uint64_t vaddr,
244 uint64_t *return_addr, int flags);
245
246
247 #endif /* CPU_SH_H */

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