1 |
/* |
/* |
2 |
* Copyright (C) 2005 Anders Gavare. All rights reserved. |
* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
3 |
* |
* |
4 |
* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
5 |
* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: cpu_arm.c,v 1.44 2005/11/19 18:53:07 debug Exp $ |
* $Id: cpu_arm.c,v 1.72 2007/06/28 13:36:46 debug Exp $ |
29 |
* |
* |
30 |
* ARM CPU emulation. |
* ARM CPU emulation. |
31 |
* |
* |
39 |
#include <stdlib.h> |
#include <stdlib.h> |
40 |
#include <string.h> |
#include <string.h> |
41 |
#include <ctype.h> |
#include <ctype.h> |
42 |
|
#include <unistd.h> |
43 |
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|
44 |
#include "arm_cpu_types.h" |
#include "arm_cpu_types.h" |
45 |
#include "cpu.h" |
#include "cpu.h" |
46 |
|
#include "interrupt.h" |
47 |
#include "machine.h" |
#include "machine.h" |
48 |
#include "memory.h" |
#include "memory.h" |
49 |
#include "misc.h" |
#include "misc.h" |
50 |
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#include "of.h" |
51 |
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#include "settings.h" |
52 |
#include "symbol.h" |
#include "symbol.h" |
53 |
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#include "useremul.h" |
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55 |
#define DYNTRANS_32 |
#define DYNTRANS_32 |
56 |
#include "tmp_arm_head.c" |
#include "tmp_arm_head.c" |
68 |
static int arm_exception_to_mode[N_ARM_EXCEPTIONS] = ARM_EXCEPTION_TO_MODE; |
static int arm_exception_to_mode[N_ARM_EXCEPTIONS] = ARM_EXCEPTION_TO_MODE; |
69 |
|
|
70 |
/* For quick_pc_to_pointers(): */ |
/* For quick_pc_to_pointers(): */ |
71 |
#include "arm_quick_pc_to_pointers.h" |
void arm_pc_to_pointers(struct cpu *cpu); |
72 |
|
#include "quick_pc_to_pointers.h" |
73 |
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74 |
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void arm_irq_interrupt_assert(struct interrupt *interrupt); |
75 |
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void arm_irq_interrupt_deassert(struct interrupt *interrupt); |
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/* |
/* |
84 |
int arm_cpu_new(struct cpu *cpu, struct memory *mem, |
int arm_cpu_new(struct cpu *cpu, struct memory *mem, |
85 |
struct machine *machine, int cpu_id, char *cpu_type_name) |
struct machine *machine, int cpu_id, char *cpu_type_name) |
86 |
{ |
{ |
87 |
int any_cache = 0, i, found; |
int i, found; |
88 |
struct arm_cpu_type_def cpu_type_defs[] = ARM_CPU_TYPE_DEFS; |
struct arm_cpu_type_def cpu_type_defs[] = ARM_CPU_TYPE_DEFS; |
89 |
|
|
90 |
/* Scan the list for this cpu type: */ |
/* Scan the list for this cpu type: */ |
99 |
if (found == -1) |
if (found == -1) |
100 |
return 0; |
return 0; |
101 |
|
|
102 |
|
cpu->run_instr = arm_run_instr; |
103 |
cpu->memory_rw = arm_memory_rw; |
cpu->memory_rw = arm_memory_rw; |
104 |
cpu->update_translation_table = arm_update_translation_table; |
cpu->update_translation_table = arm_update_translation_table; |
105 |
cpu->invalidate_translation_caches = |
cpu->invalidate_translation_caches = |
106 |
arm_invalidate_translation_caches; |
arm_invalidate_translation_caches; |
107 |
cpu->invalidate_code_translation = arm_invalidate_code_translation; |
cpu->invalidate_code_translation = arm_invalidate_code_translation; |
108 |
cpu->translate_address = arm_translate_address; |
cpu->translate_v2p = arm_translate_v2p; |
109 |
|
|
110 |
cpu->cd.arm.cpu_type = cpu_type_defs[found]; |
cpu->cd.arm.cpu_type = cpu_type_defs[found]; |
111 |
cpu->name = cpu->cd.arm.cpu_type.name; |
cpu->name = cpu->cd.arm.cpu_type.name; |
112 |
cpu->is_32bit = 1; |
cpu->is_32bit = 1; |
113 |
|
cpu->byte_order = EMUL_LITTLE_ENDIAN; |
114 |
|
|
115 |
cpu->cd.arm.cpsr = ARM_FLAG_I | ARM_FLAG_F; |
cpu->cd.arm.cpsr = ARM_FLAG_I | ARM_FLAG_F; |
116 |
cpu->cd.arm.control = ARM_CONTROL_PROG32 | ARM_CONTROL_DATA32 |
cpu->cd.arm.control = ARM_CONTROL_PROG32 | ARM_CONTROL_DATA32 |
117 |
| ARM_CONTROL_CACHE | ARM_CONTROL_ICACHE | ARM_CONTROL_ALIGN; |
| ARM_CONTROL_CACHE | ARM_CONTROL_ICACHE | ARM_CONTROL_ALIGN; |
118 |
|
/* TODO: default auxctrl contents */ |
119 |
|
|
120 |
if (cpu->machine->prom_emulation) { |
if (cpu->machine->prom_emulation) { |
121 |
cpu->cd.arm.cpsr |= ARM_MODE_SVC32; |
cpu->cd.arm.cpsr |= ARM_MODE_SVC32; |
128 |
/* Only show name and caches etc for CPU nr 0: */ |
/* Only show name and caches etc for CPU nr 0: */ |
129 |
if (cpu_id == 0) { |
if (cpu_id == 0) { |
130 |
debug("%s", cpu->name); |
debug("%s", cpu->name); |
131 |
if (cpu->cd.arm.cpu_type.icache_shift != 0) |
if (cpu->cd.arm.cpu_type.icache_shift != 0 || |
132 |
any_cache = 1; |
cpu->cd.arm.cpu_type.dcache_shift != 0) { |
133 |
if (cpu->cd.arm.cpu_type.dcache_shift != 0) |
int isize = cpu->cd.arm.cpu_type.icache_shift; |
134 |
any_cache = 1; |
int dsize = cpu->cd.arm.cpu_type.dcache_shift; |
135 |
if (any_cache) { |
if (isize != 0) |
136 |
debug(" (I+D = %i+%i KB", |
isize = 1 << (isize - 10); |
137 |
(int)(1 << (cpu->cd.arm.cpu_type.icache_shift-10)), |
if (dsize != 0) |
138 |
(int)(1 << (cpu->cd.arm.cpu_type.dcache_shift-10))); |
dsize = 1 << (dsize - 10); |
139 |
debug(")"); |
debug(" (I+D = %i+%i KB)", isize, dsize); |
140 |
} |
} |
141 |
} |
} |
142 |
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|
143 |
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/* TODO: Some of these values (iway and dway) aren't used yet: */ |
144 |
|
cpu->cd.arm.cachetype = |
145 |
|
(5 << ARM_CACHETYPE_CLASS_SHIFT) |
146 |
|
| (1 << ARM_CACHETYPE_HARVARD_SHIFT) |
147 |
|
| ((cpu->cd.arm.cpu_type.dcache_shift - 9) << |
148 |
|
ARM_CACHETYPE_DSIZE_SHIFT) |
149 |
|
| (5 << ARM_CACHETYPE_DASSOC_SHIFT) /* 32-way */ |
150 |
|
| (2 << ARM_CACHETYPE_DLINE_SHIFT) /* 8 words/line */ |
151 |
|
| ((cpu->cd.arm.cpu_type.icache_shift - 9) << |
152 |
|
ARM_CACHETYPE_ISIZE_SHIFT) |
153 |
|
| (5 << ARM_CACHETYPE_IASSOC_SHIFT) /* 32-way */ |
154 |
|
| (2 << ARM_CACHETYPE_ILINE_SHIFT); /* 8 words/line */ |
155 |
|
|
156 |
/* Coprocessor 15 = the system control coprocessor. */ |
/* Coprocessor 15 = the system control coprocessor. */ |
157 |
cpu->cd.arm.coproc[15] = arm_coproc_15; |
cpu->cd.arm.coproc[15] = arm_coproc_15; |
158 |
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|
159 |
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/* Coprocessor 14 for XScale: */ |
160 |
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if (cpu->cd.arm.cpu_type.flags & ARM_XSCALE) |
161 |
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cpu->cd.arm.coproc[14] = arm_coproc_xscale_14; |
162 |
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|
163 |
/* |
/* |
164 |
* NOTE/TODO: Ugly hack for OpenFirmware emulation: |
* NOTE/TODO: Ugly hack for OpenFirmware emulation: |
165 |
*/ |
*/ |
171 |
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|
172 |
cpu->cd.arm.flags = cpu->cd.arm.cpsr >> 28; |
cpu->cd.arm.flags = cpu->cd.arm.cpsr >> 28; |
173 |
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|
174 |
|
CPU_SETTINGS_ADD_REGISTER64("pc", cpu->pc); |
175 |
|
for (i=0; i<N_ARM_REGS - 1; i++) |
176 |
|
CPU_SETTINGS_ADD_REGISTER32(arm_regname[i], cpu->cd.arm.r[i]); |
177 |
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|
178 |
|
/* Register the CPU's "IRQ" and "FIQ" interrupts: */ |
179 |
|
{ |
180 |
|
struct interrupt template; |
181 |
|
char name[50]; |
182 |
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snprintf(name, sizeof(name), "%s.irq", cpu->path); |
183 |
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|
184 |
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memset(&template, 0, sizeof(template)); |
185 |
|
template.line = 0; |
186 |
|
template.name = name; |
187 |
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template.extra = cpu; |
188 |
|
template.interrupt_assert = arm_irq_interrupt_assert; |
189 |
|
template.interrupt_deassert = arm_irq_interrupt_deassert; |
190 |
|
interrupt_handler_register(&template); |
191 |
|
|
192 |
|
/* FIQ: TODO */ |
193 |
|
} |
194 |
|
|
195 |
return 1; |
return 1; |
196 |
} |
} |
197 |
|
|
215 |
} |
} |
216 |
|
|
217 |
cpu->cd.arm.control |= ARM_CONTROL_MMU; |
cpu->cd.arm.control |= ARM_CONTROL_MMU; |
218 |
cpu->translate_address = arm_translate_address_mmu; |
cpu->translate_v2p = arm_translate_v2p_mmu; |
219 |
cpu->cd.arm.dacr |= 0x00000003; |
cpu->cd.arm.dacr |= 0x00000003; |
220 |
cpu->cd.arm.ttb = ttb_addr; |
cpu->cd.arm.ttb = ttb_addr; |
221 |
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333 |
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334 |
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|
335 |
/* |
/* |
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* arm_cpu_register_match(): |
|
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*/ |
|
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void arm_cpu_register_match(struct machine *m, char *name, |
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int writeflag, uint64_t *valuep, int *match_register) |
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{ |
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int i, cpunr = 0; |
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|
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/* CPU number: */ |
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/* TODO */ |
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|
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/* Register names: */ |
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for (i=0; i<N_ARM_REGS; i++) { |
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if (strcasecmp(name, arm_regname[i]) == 0) { |
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if (writeflag) { |
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m->cpus[cpunr]->cd.arm.r[i] = *valuep; |
|
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if (i == ARM_PC) |
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m->cpus[cpunr]->pc = *valuep; |
|
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} else |
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*valuep = m->cpus[cpunr]->cd.arm.r[i]; |
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*match_register = 1; |
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} |
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} |
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} |
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/* |
|
336 |
* arm_cpu_register_dump(): |
* arm_cpu_register_dump(): |
337 |
* |
* |
338 |
* Dump cpu registers in a relatively readable format. |
* Dump cpu registers in a relatively readable format. |
401 |
} |
} |
402 |
|
|
403 |
if (m != ARM_MODE_USR32 && m != ARM_MODE_SYS32) { |
if (m != ARM_MODE_USR32 && m != ARM_MODE_SYS32) { |
404 |
debug("cpu%i: usr r8..r14 =", x); |
debug("cpu%i: usr r8-14:", x); |
405 |
for (i=0; i<7; i++) |
for (i=0; i<7; i++) |
406 |
debug(" %08x", cpu->cd.arm.default_r8_r14[i]); |
debug(" %08x", cpu->cd.arm.default_r8_r14[i]); |
407 |
debug("\n"); |
debug("\n"); |
408 |
} |
} |
409 |
|
|
410 |
if (m != ARM_MODE_FIQ32) { |
if (m != ARM_MODE_FIQ32) { |
411 |
debug("cpu%i: fiq r8..r14 =", x); |
debug("cpu%i: fiq r8-14:", x); |
412 |
for (i=0; i<7; i++) |
for (i=0; i<7; i++) |
413 |
debug(" %08x", cpu->cd.arm.fiq_r8_r14[i]); |
debug(" %08x", cpu->cd.arm.fiq_r8_r14[i]); |
414 |
debug("\n"); |
debug("\n"); |
415 |
} |
} |
416 |
|
|
417 |
if (m != ARM_MODE_IRQ32) { |
if (m != ARM_MODE_IRQ32) { |
418 |
debug("cpu%i: irq r13..r14 =", x); |
debug("cpu%i: irq r13-14:", x); |
419 |
for (i=0; i<2; i++) |
for (i=0; i<2; i++) |
420 |
debug(" %08x", cpu->cd.arm.irq_r13_r14[i]); |
debug(" %08x", cpu->cd.arm.irq_r13_r14[i]); |
421 |
debug("\n"); |
debug("\n"); |
422 |
} |
} |
423 |
|
|
424 |
if (m != ARM_MODE_SVC32) { |
if (m != ARM_MODE_SVC32) { |
425 |
debug("cpu%i: svc r13..r14 =", x); |
debug("cpu%i: svc r13-14:", x); |
426 |
for (i=0; i<2; i++) |
for (i=0; i<2; i++) |
427 |
debug(" %08x", cpu->cd.arm.svc_r13_r14[i]); |
debug(" %08x", cpu->cd.arm.svc_r13_r14[i]); |
428 |
debug("\n"); |
debug("\n"); |
429 |
} |
} |
430 |
|
|
431 |
if (m != ARM_MODE_ABT32) { |
if (m != ARM_MODE_ABT32) { |
432 |
debug("cpu%i: abt r13..r14 =", x); |
debug("cpu%i: abt r13-14:", x); |
433 |
for (i=0; i<2; i++) |
for (i=0; i<2; i++) |
434 |
debug(" %08x", cpu->cd.arm.abt_r13_r14[i]); |
debug(" %08x", cpu->cd.arm.abt_r13_r14[i]); |
435 |
debug("\n"); |
debug("\n"); |
436 |
} |
} |
437 |
|
|
438 |
if (m != ARM_MODE_UND32) { |
if (m != ARM_MODE_UND32) { |
439 |
debug("cpu%i: und r13..r14 =", x); |
debug("cpu%i: und r13-14:", x); |
440 |
for (i=0; i<2; i++) |
for (i=0; i<2; i++) |
441 |
debug(" %08x", cpu->cd.arm.und_r13_r14[i]); |
debug(" %08x", cpu->cd.arm.und_r13_r14[i]); |
442 |
debug("\n"); |
debug("\n"); |
473 |
cpu->cd.arm.control & |
cpu->cd.arm.control & |
474 |
ARM_CONTROL_V? "yes (0xffff0000)" : "no"); |
ARM_CONTROL_V? "yes (0xffff0000)" : "no"); |
475 |
|
|
476 |
|
/* TODO: auxctrl on which CPU types? */ |
477 |
|
if (cpu->cd.arm.cpu_type.flags & ARM_XSCALE) { |
478 |
|
debug("cpu%i: auxctrl = 0x%08x\n", x, |
479 |
|
cpu->cd.arm.auxctrl); |
480 |
|
debug("cpu%i: minidata cache attr = 0x%x\n", x, |
481 |
|
(cpu->cd.arm.auxctrl & ARM_AUXCTRL_MD) |
482 |
|
>> ARM_AUXCTRL_MD_SHIFT); |
483 |
|
debug("cpu%i: page table memory attr: %i\n", x, |
484 |
|
(cpu->cd.arm.auxctrl & ARM_AUXCTRL_P)? 1 : 0); |
485 |
|
debug("cpu%i: write buffer coalescing: %s\n", x, |
486 |
|
(cpu->cd.arm.auxctrl & ARM_AUXCTRL_K)? |
487 |
|
"disabled" : "enabled"); |
488 |
|
} |
489 |
|
|
490 |
debug("cpu%i: ttb = 0x%08x dacr = 0x%08x\n", x, |
debug("cpu%i: ttb = 0x%08x dacr = 0x%08x\n", x, |
491 |
cpu->cd.arm.ttb, cpu->cd.arm.dacr); |
cpu->cd.arm.ttb, cpu->cd.arm.dacr); |
492 |
debug("cpu%i: fsr = 0x%08x far = 0x%08x\n", x, |
debug("cpu%i: fsr = 0x%08x far = 0x%08x\n", x, |
689 |
"mode 0x%02x (pc=0x%x) ]\n", newmode, (int)cpu->pc); |
"mode 0x%02x (pc=0x%x) ]\n", newmode, (int)cpu->pc); |
690 |
/* exit(1); */ |
/* exit(1); */ |
691 |
} |
} |
692 |
#if 0 |
|
|
if (oldmode==0x10 && newmode ==0x17 && cpu->pc == 0x1644f0) |
|
|
single_step = 1; |
|
|
/* 00008554 */ |
|
|
#endif |
|
693 |
cpu->cd.arm.cpsr |= ARM_FLAG_I; |
cpu->cd.arm.cpsr |= ARM_FLAG_I; |
694 |
if (exception_nr == ARM_EXCEPTION_RESET || |
if (exception_nr == ARM_EXCEPTION_RESET || |
695 |
exception_nr == ARM_EXCEPTION_FIQ) |
exception_nr == ARM_EXCEPTION_FIQ) |
714 |
|
|
715 |
|
|
716 |
/* |
/* |
717 |
* arm_cpu_interrupt(): |
* arm_cpu_tlbdump(): |
718 |
* |
* |
719 |
* 0..31 are used as footbridge interrupt numbers, 32..47 = ISA, |
* Called from the debugger to dump the TLB in a readable format. |
720 |
* 64 is used as a "re-assert" signal to cpu->machine->md_interrupt(). |
* x is the cpu number to dump, or -1 to dump all CPUs. |
721 |
* |
* |
722 |
* TODO: don't hardcode to footbridge! |
* If rawflag is nonzero, then the TLB contents isn't formated nicely, |
723 |
|
* just dumped. |
724 |
*/ |
*/ |
725 |
int arm_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr) |
void arm_cpu_tlbdump(struct machine *m, int x, int rawflag) |
726 |
{ |
{ |
|
/* fatal("arm_cpu_interrupt(): 0x%x\n", (int)irq_nr); */ |
|
|
if (irq_nr <= 64) { |
|
|
if (cpu->machine->md_interrupt != NULL) |
|
|
cpu->machine->md_interrupt(cpu->machine, |
|
|
cpu, irq_nr, 1); |
|
|
else |
|
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fatal("arm_cpu_interrupt(): md_interrupt == NULL\n"); |
|
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} else { |
|
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/* Assert ARM IRQs: */ |
|
|
cpu->cd.arm.irq_asserted = 1; |
|
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} |
|
|
|
|
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return 1; |
|
727 |
} |
} |
728 |
|
|
729 |
|
|
730 |
/* |
/* |
731 |
* arm_cpu_interrupt_ack(): |
* arm_irq_interrupt_assert(): |
732 |
|
* arm_irq_interrupt_deassert(): |
733 |
*/ |
*/ |
734 |
int arm_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr) |
void arm_irq_interrupt_assert(struct interrupt *interrupt) |
735 |
{ |
{ |
736 |
if (irq_nr <= 64) { |
struct cpu *cpu = (struct cpu *) interrupt->extra; |
737 |
if (cpu->machine->md_interrupt != NULL) |
cpu->cd.arm.irq_asserted = 1; |
738 |
cpu->machine->md_interrupt(cpu->machine, |
} |
739 |
cpu, irq_nr, 0); |
void arm_irq_interrupt_deassert(struct interrupt *interrupt) |
740 |
} else { |
{ |
741 |
/* De-assert ARM IRQs: */ |
struct cpu *cpu = (struct cpu *) interrupt->extra; |
742 |
cpu->cd.arm.irq_asserted = 0; |
cpu->cd.arm.irq_asserted = 0; |
|
} |
|
|
|
|
|
return 1; |
|
743 |
} |
} |
744 |
|
|
745 |
|
|
756 |
* cpu->pc for relative addresses. |
* cpu->pc for relative addresses. |
757 |
*/ |
*/ |
758 |
int arm_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
int arm_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
759 |
int running, uint64_t dumpaddr, int bintrans) |
int running, uint64_t dumpaddr) |
760 |
{ |
{ |
761 |
uint32_t iw, tmp; |
uint32_t iw, tmp; |
762 |
int main_opcode, secondary_opcode, s_bit, r16, r12, r8; |
int main_opcode, secondary_opcode, s_bit, r16, r12, r8; |
1248 |
* xxxx1100 0100nnnn ddddcccc oooommmm MCRR c,op,Rd,Rn,CRm |
* xxxx1100 0100nnnn ddddcccc oooommmm MCRR c,op,Rd,Rn,CRm |
1249 |
* xxxx1100 0101nnnn ddddcccc oooommmm MRRC c,op,Rd,Rn,CRm |
* xxxx1100 0101nnnn ddddcccc oooommmm MRRC c,op,Rd,Rn,CRm |
1250 |
*/ |
*/ |
1251 |
|
if ((iw & 0x0fe00fff) == 0x0c400000) { |
1252 |
|
debug("%s%s\t", iw & 0x100000? "mra" : "mar", |
1253 |
|
condition); |
1254 |
|
if (iw & 0x100000) |
1255 |
|
debug("%s,%s,acc0\n", |
1256 |
|
arm_regname[r12], arm_regname[r16]); |
1257 |
|
else |
1258 |
|
debug("acc0,%s,%s\n", |
1259 |
|
arm_regname[r12], arm_regname[r16]); |
1260 |
|
break; |
1261 |
|
} |
1262 |
if ((iw & 0x0fe00000) == 0x0c400000) { |
if ((iw & 0x0fe00000) == 0x0c400000) { |
1263 |
debug("%s%s\t", iw & 0x100000? "mrrc" : "mcrr", |
debug("%s%s\t", iw & 0x100000? "mrrc" : "mcrr", |
1264 |
condition); |
condition); |
1275 |
* xxxx1110 oooonnnn ddddpppp qqq0mmmm CDP |
* xxxx1110 oooonnnn ddddpppp qqq0mmmm CDP |
1276 |
* xxxx1110 oooLNNNN ddddpppp qqq1MMMM MRC/MCR |
* xxxx1110 oooLNNNN ddddpppp qqq1MMMM MRC/MCR |
1277 |
*/ |
*/ |
1278 |
|
if ((iw & 0x0ff00ff0) == 0x0e200010) { |
1279 |
|
/* Special case: mia* DSP instructions */ |
1280 |
|
switch ((iw >> 16) & 0xf) { |
1281 |
|
case 0: debug("mia"); break; |
1282 |
|
case 8: debug("miaph"); break; |
1283 |
|
case 12: debug("miaBB"); break; |
1284 |
|
case 13: debug("miaTB"); break; |
1285 |
|
case 14: debug("miaBT"); break; |
1286 |
|
case 15: debug("miaTT"); break; |
1287 |
|
default: debug("UNKNOWN mia vector instruction?"); |
1288 |
|
} |
1289 |
|
debug("%s\t", condition); |
1290 |
|
debug("acc%i,%s,%s\n", ((iw >> 5) & 7), |
1291 |
|
arm_regname[iw & 15], arm_regname[r12]); |
1292 |
|
break; |
1293 |
|
} |
1294 |
if (iw & 0x10) { |
if (iw & 0x10) { |
1295 |
debug("%s%s\t", |
debug("%s%s\t", |
1296 |
(iw & 0x00100000)? "mrc" : "mcr", condition); |
(iw & 0x00100000)? "mrc" : "mcr", condition); |