Revision e96e2044
| b/cpu-exec.c | ||
|---|---|---|
| 511 | 511 |
BREAK_CHAIN; |
| 512 | 512 |
} |
| 513 | 513 |
#elif defined(TARGET_SH4) |
| 514 |
/* XXXXX */ |
|
| 514 |
if (interrupt_request & CPU_INTERRUPT_HARD) {
|
|
| 515 |
do_interrupt(env); |
|
| 516 |
BREAK_CHAIN; |
|
| 517 |
} |
|
| 515 | 518 |
#elif defined(TARGET_ALPHA) |
| 516 | 519 |
if (interrupt_request & CPU_INTERRUPT_HARD) {
|
| 517 | 520 |
do_interrupt(env); |
| b/hw/sh7750.c | ||
|---|---|---|
| 551 | 551 |
_INTC_ARRAY(vectors), |
| 552 | 552 |
_INTC_ARRAY(groups)); |
| 553 | 553 |
|
| 554 |
cpu->intc_handle = &s->intc; |
|
| 555 |
|
|
| 554 | 556 |
sh_serial_init(0x1fe00000, 0, s->periph_freq, serial_hds[0]); |
| 555 | 557 |
sh_serial_init(0x1fe80000, SH_SERIAL_FEAT_SCIF, |
| 556 | 558 |
s->periph_freq, serial_hds[1]); |
| b/hw/sh_intc.c | ||
|---|---|---|
| 14 | 14 |
#include "sh.h" |
| 15 | 15 |
|
| 16 | 16 |
//#define DEBUG_INTC |
| 17 |
//#define DEBUG_INTC_SOURCES |
|
| 17 | 18 |
|
| 18 | 19 |
#define INTC_A7(x) ((x) & 0x1fffffff) |
| 19 | 20 |
#define INTC_ARRAY(x) (sizeof(x) / sizeof(x[0])) |
| 20 | 21 |
|
| 22 |
void sh_intc_toggle_source(struct intc_source *source, |
|
| 23 |
int enable_adj, int assert_adj) |
|
| 24 |
{
|
|
| 25 |
int enable_changed = 0; |
|
| 26 |
int pending_changed = 0; |
|
| 27 |
int old_pending; |
|
| 28 |
|
|
| 29 |
if ((source->enable_count == source->enable_max) && (enable_adj == -1)) |
|
| 30 |
enable_changed = -1; |
|
| 31 |
|
|
| 32 |
source->enable_count += enable_adj; |
|
| 33 |
|
|
| 34 |
if (source->enable_count == source->enable_max) |
|
| 35 |
enable_changed = 1; |
|
| 36 |
|
|
| 37 |
source->asserted += assert_adj; |
|
| 38 |
|
|
| 39 |
old_pending = source->pending; |
|
| 40 |
source->pending = source->asserted && |
|
| 41 |
(source->enable_count == source->enable_max); |
|
| 42 |
|
|
| 43 |
if (old_pending != source->pending) |
|
| 44 |
pending_changed = 1; |
|
| 45 |
|
|
| 46 |
if (pending_changed) {
|
|
| 47 |
if (source->pending) {
|
|
| 48 |
source->parent->pending++; |
|
| 49 |
if (source->parent->pending == 1) |
|
| 50 |
cpu_interrupt(first_cpu, CPU_INTERRUPT_HARD); |
|
| 51 |
} |
|
| 52 |
else {
|
|
| 53 |
source->parent->pending--; |
|
| 54 |
if (source->parent->pending == 0) |
|
| 55 |
cpu_reset_interrupt(first_cpu, CPU_INTERRUPT_HARD); |
|
| 56 |
} |
|
| 57 |
} |
|
| 58 |
|
|
| 59 |
if (enable_changed || assert_adj || pending_changed) {
|
|
| 60 |
#ifdef DEBUG_INTC_SOURCES |
|
| 61 |
printf("sh_intc: (%d/%d/%d/%d) interrupt source 0x%x %s%s%s\n",
|
|
| 62 |
source->parent->pending, |
|
| 63 |
source->asserted, |
|
| 64 |
source->enable_count, |
|
| 65 |
source->enable_max, |
|
| 66 |
source->vect, |
|
| 67 |
source->asserted ? "asserted " : |
|
| 68 |
assert_adj ? "deasserted" : "", |
|
| 69 |
enable_changed == 1 ? "enabled " : |
|
| 70 |
enable_changed == -1 ? "disabled " : "", |
|
| 71 |
source->pending ? "pending" : ""); |
|
| 72 |
#endif |
|
| 73 |
} |
|
| 74 |
} |
|
| 75 |
|
|
| 76 |
int sh_intc_get_pending_vector(struct intc_desc *desc, int imask) |
|
| 77 |
{
|
|
| 78 |
unsigned int i; |
|
| 79 |
|
|
| 80 |
/* slow: use a linked lists of pending sources instead */ |
|
| 81 |
/* wrong: take interrupt priority into account (one list per priority) */ |
|
| 82 |
|
|
| 83 |
if (imask == 0x0f) {
|
|
| 84 |
return -1; /* FIXME, update code to include priority per source */ |
|
| 85 |
} |
|
| 86 |
|
|
| 87 |
for (i = 0; i < desc->nr_sources; i++) {
|
|
| 88 |
struct intc_source *source = desc->sources + i; |
|
| 89 |
|
|
| 90 |
if (source->pending) {
|
|
| 91 |
#ifdef DEBUG_INTC_SOURCES |
|
| 92 |
printf("sh_intc: (%d) returning interrupt source 0x%x\n",
|
|
| 93 |
desc->pending, source->vect); |
|
| 94 |
#endif |
|
| 95 |
return source->vect; |
|
| 96 |
} |
|
| 97 |
} |
|
| 98 |
|
|
| 99 |
assert(0); |
|
| 100 |
} |
|
| 101 |
|
|
| 21 | 102 |
#define INTC_MODE_NONE 0 |
| 22 | 103 |
#define INTC_MODE_DUAL_SET 1 |
| 23 | 104 |
#define INTC_MODE_DUAL_CLR 2 |
| ... | ... | |
| 94 | 175 |
assert(0); |
| 95 | 176 |
} |
| 96 | 177 |
|
| 97 |
static void sh_intc_toggle(struct intc_desc *desc, intc_enum id, |
|
| 98 |
int enable, int is_group)
|
|
| 178 |
static void sh_intc_toggle_mask(struct intc_desc *desc, intc_enum id,
|
|
| 179 |
int enable, int is_group)
|
|
| 99 | 180 |
{
|
| 100 | 181 |
struct intc_source *source = desc->sources + id; |
| 101 |
int old = source->enable_count; |
|
| 102 | 182 |
|
| 103 | 183 |
if (!id) |
| 104 | 184 |
return; |
| 105 | 185 |
|
| 106 | 186 |
if (!source->next_enum_id && (!source->enable_max || !source->vect)) {
|
| 107 |
#ifdef DEBUG_INTC |
|
| 187 |
#ifdef DEBUG_INTC_SOURCES
|
|
| 108 | 188 |
printf("sh_intc: reserved interrupt source %d modified\n", id);
|
| 109 | 189 |
#endif |
| 110 | 190 |
return; |
| 111 | 191 |
} |
| 112 | 192 |
|
| 113 |
if (source->vect) {
|
|
| 114 |
if (enable) |
|
| 115 |
source->enable_count++; |
|
| 116 |
else |
|
| 117 |
source->enable_count--; |
|
| 193 |
if (source->vect) |
|
| 194 |
sh_intc_toggle_source(source, enable ? 1 : -1, 0); |
|
| 118 | 195 |
|
| 119 |
if (source->enable_count == source->enable_max) {
|
|
| 120 |
#ifdef DEBUG_INTC |
|
| 121 |
printf("sh_intc: enabling interrupt source %d -> 0x%04x\n",
|
|
| 122 |
id, source->vect); |
|
| 123 |
#endif |
|
| 124 |
} |
|
| 125 |
|
|
| 126 |
if (old == source->enable_max) {
|
|
| 127 |
#ifdef DEBUG_INTC |
|
| 128 |
printf("sh_intc: disabling interrupt source %d -> 0x%04x\n",
|
|
| 129 |
id, source->vect); |
|
| 130 |
#endif |
|
| 131 |
} |
|
| 132 |
} |
|
| 133 | 196 |
#ifdef DEBUG_INTC |
| 134 | 197 |
else {
|
| 135 | 198 |
printf("setting interrupt group %d to %d\n", id, !!enable);
|
| ... | ... | |
| 137 | 200 |
#endif |
| 138 | 201 |
|
| 139 | 202 |
if ((is_group || !source->vect) && source->next_enum_id) {
|
| 140 |
sh_intc_toggle(desc, source->next_enum_id, enable, 1); |
|
| 203 |
sh_intc_toggle_mask(desc, source->next_enum_id, enable, 1);
|
|
| 141 | 204 |
} |
| 142 | 205 |
|
| 143 | 206 |
#ifdef DEBUG_INTC |
| ... | ... | |
| 200 | 263 |
printf("k = %d, first = %d, enum = %d, mask = 0x%08x\n",
|
| 201 | 264 |
k, first, enum_ids[k], (unsigned int)mask); |
| 202 | 265 |
#endif |
| 203 |
sh_intc_toggle(desc, enum_ids[k], value & mask, 0); |
|
| 266 |
sh_intc_toggle_mask(desc, enum_ids[k], value & mask, 0);
|
|
| 204 | 267 |
} |
| 205 | 268 |
|
| 206 | 269 |
*valuep = value; |
| ... | ... | |
| 309 | 372 |
if (s) |
| 310 | 373 |
s->vect = vect->vect; |
| 311 | 374 |
|
| 312 |
#ifdef DEBUG_INTC |
|
| 375 |
#ifdef DEBUG_INTC_SOURCES
|
|
| 313 | 376 |
printf("sh_intc: registered source %d -> 0x%04x (%d/%d)\n",
|
| 314 | 377 |
vect->enum_id, s->vect, s->enable_count, s->enable_max); |
| 315 | 378 |
#endif |
| ... | ... | |
| 330 | 393 |
s->next_enum_id = gr->enum_ids[k]; |
| 331 | 394 |
} |
| 332 | 395 |
|
| 333 |
#ifdef DEBUG_INTC |
|
| 396 |
#ifdef DEBUG_INTC_SOURCES
|
|
| 334 | 397 |
printf("sh_intc: registered group %d (%d/%d)\n",
|
| 335 | 398 |
gr->enum_id, s->enable_count, s->enable_max); |
| 336 | 399 |
#endif |
| ... | ... | |
| 347 | 410 |
{
|
| 348 | 411 |
unsigned int i; |
| 349 | 412 |
|
| 413 |
desc->pending = 0; |
|
| 350 | 414 |
desc->nr_sources = nr_sources; |
| 351 | 415 |
desc->mask_regs = mask_regs; |
| 352 | 416 |
desc->nr_mask_regs = nr_mask_regs; |
| ... | ... | |
| 359 | 423 |
return -1; |
| 360 | 424 |
|
| 361 | 425 |
memset(desc->sources, 0, i); |
| 426 |
for (i = 0; i < desc->nr_sources; i++) {
|
|
| 427 |
struct intc_source *source = desc->sources + i; |
|
| 428 |
|
|
| 429 |
source->parent = desc; |
|
| 430 |
} |
|
| 362 | 431 |
|
| 363 | 432 |
desc->iomemtype = cpu_register_io_memory(0, sh_intc_readfn, |
| 364 | 433 |
sh_intc_writefn, desc); |
| b/hw/sh_intc.h | ||
|---|---|---|
| 35 | 35 |
unsigned short vect; |
| 36 | 36 |
intc_enum next_enum_id; |
| 37 | 37 |
|
| 38 |
int asserted; |
|
| 38 |
int asserted; /* emulates the interrupt signal line from device to intc */
|
|
| 39 | 39 |
int enable_count; |
| 40 | 40 |
int enable_max; |
| 41 |
int pending; /* emulates the result of signal and masking */ |
|
| 42 |
struct intc_desc *parent; |
|
| 41 | 43 |
}; |
| 42 | 44 |
|
| 43 | 45 |
struct intc_desc {
|
| ... | ... | |
| 49 | 51 |
int nr_prio_regs; |
| 50 | 52 |
|
| 51 | 53 |
int iomemtype; |
| 54 |
int pending; /* number of interrupt sources that has pending set */ |
|
| 52 | 55 |
}; |
| 53 | 56 |
|
| 57 |
int sh_intc_get_pending_vector(struct intc_desc *desc, int imask); |
|
| 54 | 58 |
struct intc_source *sh_intc_source(struct intc_desc *desc, intc_enum id); |
| 59 |
void sh_intc_toggle_source(struct intc_source *source, |
|
| 60 |
int enable_adj, int assert_adj); |
|
| 55 | 61 |
|
| 56 | 62 |
void sh_intc_register_sources(struct intc_desc *desc, |
| 57 | 63 |
struct intc_vect *vectors, |
| b/target-sh4/cpu.h | ||
|---|---|---|
| 121 | 121 |
int exception_index; |
| 122 | 122 |
CPU_COMMON tlb_t utlb[UTLB_SIZE]; /* unified translation table */ |
| 123 | 123 |
tlb_t itlb[ITLB_SIZE]; /* instruction translation table */ |
| 124 |
void *intc_handle; |
|
| 124 | 125 |
} CPUSH4State; |
| 125 | 126 |
|
| 126 | 127 |
CPUSH4State *cpu_sh4_init(const char *cpu_model); |
| b/target-sh4/helper.c | ||
|---|---|---|
| 27 | 27 |
|
| 28 | 28 |
#include "cpu.h" |
| 29 | 29 |
#include "exec-all.h" |
| 30 |
#include "hw/sh_intc.h" |
|
| 30 | 31 |
|
| 31 | 32 |
#if defined(CONFIG_USER_ONLY) |
| 32 | 33 |
|
| ... | ... | |
| 74 | 75 |
|
| 75 | 76 |
void do_interrupt(CPUState * env) |
| 76 | 77 |
{
|
| 78 |
int do_irq = env->interrupt_request & CPU_INTERRUPT_HARD; |
|
| 79 |
int do_exp, irq_vector = env->exception_index; |
|
| 80 |
|
|
| 81 |
/* prioritize exceptions over interrupts */ |
|
| 82 |
|
|
| 83 |
do_exp = env->exception_index != -1; |
|
| 84 |
do_irq = do_irq && (env->exception_index == -1); |
|
| 85 |
|
|
| 86 |
if (env->sr & SR_BL) {
|
|
| 87 |
if (do_exp && env->exception_index != 0x1e0) {
|
|
| 88 |
env->exception_index = 0x000; /* masked exception -> reset */ |
|
| 89 |
} |
|
| 90 |
if (do_irq) {
|
|
| 91 |
return; /* masked */ |
|
| 92 |
} |
|
| 93 |
} |
|
| 94 |
|
|
| 95 |
if (do_irq) {
|
|
| 96 |
irq_vector = sh_intc_get_pending_vector(env->intc_handle, |
|
| 97 |
(env->sr >> 4) & 0xf); |
|
| 98 |
if (irq_vector == -1) {
|
|
| 99 |
return; /* masked */ |
|
| 100 |
} |
|
| 101 |
} |
|
| 102 |
|
|
| 77 | 103 |
if (loglevel & CPU_LOG_INT) {
|
| 78 | 104 |
const char *expname; |
| 79 | 105 |
switch (env->exception_index) {
|
| ... | ... | |
| 117 | 143 |
expname = "trapa"; |
| 118 | 144 |
break; |
| 119 | 145 |
default: |
| 120 |
expname = "???";
|
|
| 121 |
break;
|
|
| 146 |
expname = do_irq ? "interrupt" : "???";
|
|
| 147 |
break;
|
|
| 122 | 148 |
} |
| 123 | 149 |
fprintf(logfile, "exception 0x%03x [%s] raised\n", |
| 124 |
env->exception_index, expname);
|
|
| 150 |
irq_vector, expname);
|
|
| 125 | 151 |
cpu_dump_state(env, logfile, fprintf, 0); |
| 126 | 152 |
} |
| 127 | 153 |
|
| 128 | 154 |
env->ssr = env->sr; |
| 129 |
env->spc = env->spc;
|
|
| 155 |
env->spc = env->pc; |
|
| 130 | 156 |
env->sgr = env->gregs[15]; |
| 131 | 157 |
env->sr |= SR_BL | SR_MD | SR_RB; |
| 132 | 158 |
|
| 133 |
env->expevt = env->exception_index & 0x7ff; |
|
| 134 |
switch (env->exception_index) {
|
|
| 135 |
case 0x040: |
|
| 136 |
case 0x060: |
|
| 137 |
case 0x080: |
|
| 138 |
env->pc = env->vbr + 0x400; |
|
| 139 |
break; |
|
| 140 |
case 0x140: |
|
| 141 |
env->pc = 0xa0000000; |
|
| 142 |
break; |
|
| 143 |
default: |
|
| 144 |
env->pc = env->vbr + 0x100; |
|
| 145 |
break; |
|
| 159 |
if (do_exp) {
|
|
| 160 |
env->expevt = env->exception_index; |
|
| 161 |
switch (env->exception_index) {
|
|
| 162 |
case 0x000: |
|
| 163 |
case 0x020: |
|
| 164 |
case 0x140: |
|
| 165 |
env->sr &= ~SR_FD; |
|
| 166 |
env->sr |= 0xf << 4; /* IMASK */ |
|
| 167 |
env->pc = 0xa0000000; |
|
| 168 |
break; |
|
| 169 |
case 0x040: |
|
| 170 |
case 0x060: |
|
| 171 |
env->pc = env->vbr + 0x400; |
|
| 172 |
break; |
|
| 173 |
case 0x160: |
|
| 174 |
env->spc += 2; /* special case for TRAPA */ |
|
| 175 |
/* fall through */ |
|
| 176 |
default: |
|
| 177 |
env->pc = env->vbr + 0x100; |
|
| 178 |
break; |
|
| 179 |
} |
|
| 180 |
return; |
|
| 181 |
} |
|
| 182 |
|
|
| 183 |
if (do_irq) {
|
|
| 184 |
env->intevt = irq_vector; |
|
| 185 |
env->pc = env->vbr + 0x600; |
|
| 186 |
return; |
|
| 146 | 187 |
} |
| 147 | 188 |
} |
| 148 | 189 |
|
| b/target-sh4/op.c | ||
|---|---|---|
| 419 | 419 |
|
| 420 | 420 |
void OPPROTO op_trapa(void) |
| 421 | 421 |
{
|
| 422 |
env->tra = PARAM1 * 2;
|
|
| 422 |
env->tra = PARAM1 << 2;
|
|
| 423 | 423 |
env->exception_index = 0x160; |
| 424 | 424 |
do_raise_exception(); |
| 425 | 425 |
RETURN(); |
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