*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
*/
#include "sysemu.h"
#include "hw.h"
#include "pc.h"
#include "acpi.h"
+#include "monitor.h"
-struct acpi_table_header
-{
- char signature [4]; /* ACPI signature (4 ASCII characters) */
+struct acpi_table_header {
+ uint16_t _length; /* our length, not actual part of the hdr */
+ /* XXX why we have 2 length fields here? */
+ char sig[4]; /* ACPI signature (4 ASCII characters) */
uint32_t length; /* Length of table, in bytes, including header */
uint8_t revision; /* ACPI Specification minor version # */
uint8_t checksum; /* To make sum of entire table == 0 */
- char oem_id [6]; /* OEM identification */
- char oem_table_id [8]; /* OEM table identification */
+ char oem_id[6]; /* OEM identification */
+ char oem_table_id[8]; /* OEM table identification */
uint32_t oem_revision; /* OEM revision number */
- char asl_compiler_id [4]; /* ASL compiler vendor ID */
+ char asl_compiler_id[4]; /* ASL compiler vendor ID */
uint32_t asl_compiler_revision; /* ASL compiler revision number */
-} __attribute__((packed));
+} QEMU_PACKED;
+
+#define ACPI_TABLE_HDR_SIZE sizeof(struct acpi_table_header)
+#define ACPI_TABLE_PFX_SIZE sizeof(uint16_t) /* size of the extra prefix */
+
+static const char dfl_hdr[ACPI_TABLE_HDR_SIZE] =
+ "\0\0" /* fake _length (2) */
+ "QEMU\0\0\0\0\1\0" /* sig (4), len(4), revno (1), csum (1) */
+ "QEMUQEQEMUQEMU\1\0\0\0" /* OEM id (6), table (8), revno (4) */
+ "QEMU\1\0\0\0" /* ASL compiler ID (4), version (4) */
+ ;
char *acpi_tables;
size_t acpi_tables_len;
{
int sum, i;
sum = 0;
- for(i = 0; i < len; i++)
+ for (i = 0; i < len; i++) {
sum += data[i];
+ }
return (-sum) & 0xff;
}
+/* like strncpy() but zero-fills the tail of destination */
+static void strzcpy(char *dst, const char *src, size_t size)
+{
+ size_t len = strlen(src);
+ if (len >= size) {
+ len = size;
+ } else {
+ memset(dst + len, 0, size - len);
+ }
+ memcpy(dst, src, len);
+}
+
+/* XXX fixme: this function uses obsolete argument parsing interface */
int acpi_table_add(const char *t)
{
- static const char *dfl_id = "QEMUQEMU";
char buf[1024], *p, *f;
- struct acpi_table_header acpi_hdr;
unsigned long val;
- uint32_t length;
- struct acpi_table_header *acpi_hdr_p;
- size_t off;
+ size_t len, start, allen;
+ bool has_header;
+ int changed;
+ int r;
+ struct acpi_table_header hdr;
+
+ r = 0;
+ r |= get_param_value(buf, sizeof(buf), "data", t) ? 1 : 0;
+ r |= get_param_value(buf, sizeof(buf), "file", t) ? 2 : 0;
+ switch (r) {
+ case 0:
+ buf[0] = '\0';
+ /* fallthrough for default behavior */
+ case 1:
+ has_header = false;
+ break;
+ case 2:
+ has_header = true;
+ break;
+ default:
+ fprintf(stderr, "acpitable: both data and file are specified\n");
+ return -1;
+ }
- memset(&acpi_hdr, 0, sizeof(acpi_hdr));
-
- if (get_param_value(buf, sizeof(buf), "sig", t)) {
- strncpy(acpi_hdr.signature, buf, 4);
+ if (!acpi_tables) {
+ allen = sizeof(uint16_t);
+ acpi_tables = g_malloc0(allen);
} else {
- strncpy(acpi_hdr.signature, dfl_id, 4);
+ allen = acpi_tables_len;
+ }
+
+ start = allen;
+ acpi_tables = g_realloc(acpi_tables, start + ACPI_TABLE_HDR_SIZE);
+ allen += has_header ? ACPI_TABLE_PFX_SIZE : ACPI_TABLE_HDR_SIZE;
+
+ /* now read in the data files, reallocating buffer as needed */
+
+ for (f = strtok(buf, ":"); f; f = strtok(NULL, ":")) {
+ int fd = open(f, O_RDONLY);
+
+ if (fd < 0) {
+ fprintf(stderr, "can't open file %s: %s\n", f, strerror(errno));
+ return -1;
+ }
+
+ for (;;) {
+ char data[8192];
+ r = read(fd, data, sizeof(data));
+ if (r == 0) {
+ break;
+ } else if (r > 0) {
+ acpi_tables = g_realloc(acpi_tables, allen + r);
+ memcpy(acpi_tables + allen, data, r);
+ allen += r;
+ } else if (errno != EINTR) {
+ fprintf(stderr, "can't read file %s: %s\n",
+ f, strerror(errno));
+ close(fd);
+ return -1;
+ }
+ }
+
+ close(fd);
+ }
+
+ /* now fill in the header fields */
+
+ f = acpi_tables + start; /* start of the table */
+ changed = 0;
+
+ /* copy the header to temp place to align the fields */
+ memcpy(&hdr, has_header ? f : dfl_hdr, ACPI_TABLE_HDR_SIZE);
+
+ /* length of the table minus our prefix */
+ len = allen - start - ACPI_TABLE_PFX_SIZE;
+
+ hdr._length = cpu_to_le16(len);
+
+ if (get_param_value(buf, sizeof(buf), "sig", t)) {
+ strzcpy(hdr.sig, buf, sizeof(hdr.sig));
+ ++changed;
+ }
+
+ /* length of the table including header, in bytes */
+ if (has_header) {
+ /* check if actual length is correct */
+ val = le32_to_cpu(hdr.length);
+ if (val != len) {
+ fprintf(stderr,
+ "warning: acpitable has wrong length,"
+ " header says %lu, actual size %zu bytes\n",
+ val, len);
+ ++changed;
+ }
}
+ /* we may avoid putting length here if has_header is true */
+ hdr.length = cpu_to_le32(len);
+
if (get_param_value(buf, sizeof(buf), "rev", t)) {
- val = strtoul(buf, &p, 10);
- if (val > 255 || *p != '\0')
- goto out;
- } else {
- val = 1;
+ val = strtoul(buf, &p, 0);
+ if (val > 255 || *p) {
+ fprintf(stderr, "acpitable: \"rev=%s\" is invalid\n", buf);
+ return -1;
+ }
+ hdr.revision = (uint8_t)val;
+ ++changed;
}
- acpi_hdr.revision = (int8_t)val;
if (get_param_value(buf, sizeof(buf), "oem_id", t)) {
- strncpy(acpi_hdr.oem_id, buf, 6);
- } else {
- strncpy(acpi_hdr.oem_id, dfl_id, 6);
+ strzcpy(hdr.oem_id, buf, sizeof(hdr.oem_id));
+ ++changed;
}
if (get_param_value(buf, sizeof(buf), "oem_table_id", t)) {
- strncpy(acpi_hdr.oem_table_id, buf, 8);
- } else {
- strncpy(acpi_hdr.oem_table_id, dfl_id, 8);
+ strzcpy(hdr.oem_table_id, buf, sizeof(hdr.oem_table_id));
+ ++changed;
}
if (get_param_value(buf, sizeof(buf), "oem_rev", t)) {
- val = strtol(buf, &p, 10);
- if(*p != '\0')
- goto out;
- } else {
- val = 1;
+ val = strtol(buf, &p, 0);
+ if (*p) {
+ fprintf(stderr, "acpitable: \"oem_rev=%s\" is invalid\n", buf);
+ return -1;
+ }
+ hdr.oem_revision = cpu_to_le32(val);
+ ++changed;
}
- acpi_hdr.oem_revision = cpu_to_le32(val);
if (get_param_value(buf, sizeof(buf), "asl_compiler_id", t)) {
- strncpy(acpi_hdr.asl_compiler_id, buf, 4);
- } else {
- strncpy(acpi_hdr.asl_compiler_id, dfl_id, 4);
+ strzcpy(hdr.asl_compiler_id, buf, sizeof(hdr.asl_compiler_id));
+ ++changed;
}
if (get_param_value(buf, sizeof(buf), "asl_compiler_rev", t)) {
- val = strtol(buf, &p, 10);
- if(*p != '\0')
- goto out;
- } else {
- val = 1;
- }
- acpi_hdr.asl_compiler_revision = cpu_to_le32(val);
-
- if (!get_param_value(buf, sizeof(buf), "data", t)) {
- buf[0] = '\0';
- }
-
- length = sizeof(acpi_hdr);
-
- f = buf;
- while (buf[0]) {
- struct stat s;
- char *n = strchr(f, ':');
- if (n)
- *n = '\0';
- if(stat(f, &s) < 0) {
- fprintf(stderr, "Can't stat file '%s': %s\n", f, strerror(errno));
- goto out;
+ val = strtol(buf, &p, 0);
+ if (*p) {
+ fprintf(stderr, "acpitable: \"%s=%s\" is invalid\n",
+ "asl_compiler_rev", buf);
+ return -1;
}
- length += s.st_size;
- if (!n)
- break;
- *n = ':';
- f = n + 1;
+ hdr.asl_compiler_revision = cpu_to_le32(val);
+ ++changed;
}
- if (!acpi_tables) {
- acpi_tables_len = sizeof(uint16_t);
- acpi_tables = qemu_mallocz(acpi_tables_len);
+ if (!has_header && !changed) {
+ fprintf(stderr, "warning: acpitable: no table headers are specified\n");
}
- acpi_tables = qemu_realloc(acpi_tables,
- acpi_tables_len + sizeof(uint16_t) + length);
- p = acpi_tables + acpi_tables_len;
- acpi_tables_len += sizeof(uint16_t) + length;
-
- *(uint16_t*)p = cpu_to_le32(length);
- p += sizeof(uint16_t);
- memcpy(p, &acpi_hdr, sizeof(acpi_hdr));
- off = sizeof(acpi_hdr);
-
- f = buf;
- while (buf[0]) {
- struct stat s;
- int fd;
- char *n = strchr(f, ':');
- if (n)
- *n = '\0';
- fd = open(f, O_RDONLY);
-
- if(fd < 0)
- goto out;
- if(fstat(fd, &s) < 0) {
- close(fd);
- goto out;
- }
- /* off < length is necessary because file size can be changed
- under our foot */
- while(s.st_size && off < length) {
- int r;
- r = read(fd, p + off, s.st_size);
- if (r > 0) {
- off += r;
- s.st_size -= r;
- } else if ((r < 0 && errno != EINTR) || r == 0) {
- close(fd);
- goto out;
- }
- }
- close(fd);
- if (!n)
- break;
- f = n + 1;
- }
- if (off < length) {
- /* don't pass random value in process to guest */
- memset(p + off, 0, length - off);
+ /* now calculate checksum of the table, complete with the header */
+ /* we may as well leave checksum intact if has_header is true */
+ /* alternatively there may be a way to set cksum to a given value */
+ hdr.checksum = 0; /* for checksum calculation */
+
+ /* put header back */
+ memcpy(f, &hdr, sizeof(hdr));
+
+ if (changed || !has_header || 1) {
+ ((struct acpi_table_header *)f)->checksum =
+ acpi_checksum((uint8_t *)f + ACPI_TABLE_PFX_SIZE, len);
}
- acpi_hdr_p = (struct acpi_table_header*)p;
- acpi_hdr_p->length = cpu_to_le32(length);
- acpi_hdr_p->checksum = acpi_checksum((uint8_t*)p, length);
/* increase number of tables */
- (*(uint16_t*)acpi_tables) =
- cpu_to_le32(le32_to_cpu(*(uint16_t*)acpi_tables) + 1);
+ (*(uint16_t *)acpi_tables) =
+ cpu_to_le32(le32_to_cpu(*(uint16_t *)acpi_tables) + 1);
+
+ acpi_tables_len = allen;
return 0;
-out:
- if (acpi_tables) {
- qemu_free(acpi_tables);
- acpi_tables = NULL;
+
+}
+
+static void acpi_notify_wakeup(Notifier *notifier, void *data)
+{
+ ACPIREGS *ar = container_of(notifier, ACPIREGS, wakeup);
+ WakeupReason *reason = data;
+
+ switch (*reason) {
+ case QEMU_WAKEUP_REASON_RTC:
+ ar->pm1.evt.sts |=
+ (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_RT_CLOCK_STATUS);
+ break;
+ case QEMU_WAKEUP_REASON_PMTIMER:
+ ar->pm1.evt.sts |=
+ (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_TIMER_STATUS);
+ break;
+ case QEMU_WAKEUP_REASON_OTHER:
+ default:
+ /* ACPI_BITMASK_WAKE_STATUS should be set on resume.
+ Pretend that resume was caused by power button */
+ ar->pm1.evt.sts |=
+ (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
+ break;
}
- return -1;
}
/* ACPI PM1a EVT */
-uint16_t acpi_pm1_evt_get_sts(ACPIPM1EVT *pm1, int64_t overflow_time)
+uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar)
{
int64_t d = acpi_pm_tmr_get_clock();
- if (d >= overflow_time) {
- pm1->sts |= ACPI_BITMASK_TIMER_STATUS;
+ if (d >= ar->tmr.overflow_time) {
+ ar->pm1.evt.sts |= ACPI_BITMASK_TIMER_STATUS;
}
- return pm1->sts;
+ return ar->pm1.evt.sts;
}
-void acpi_pm1_evt_write_sts(ACPIPM1EVT *pm1, ACPIPMTimer *tmr, uint16_t val)
+void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
{
- uint16_t pm1_sts = acpi_pm1_evt_get_sts(pm1, tmr->overflow_time);
+ uint16_t pm1_sts = acpi_pm1_evt_get_sts(ar);
if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
/* if TMRSTS is reset, then compute the new overflow time */
- acpi_pm_tmr_calc_overflow_time(tmr);
+ acpi_pm_tmr_calc_overflow_time(ar);
}
- pm1->sts &= ~val;
+ ar->pm1.evt.sts &= ~val;
+}
+
+void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
+{
+ ar->pm1.evt.en = val;
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC,
+ val & ACPI_BITMASK_RT_CLOCK_ENABLE);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER,
+ val & ACPI_BITMASK_TIMER_ENABLE);
}
-void acpi_pm1_evt_power_down(ACPIPM1EVT *pm1, ACPIPMTimer *tmr)
+void acpi_pm1_evt_power_down(ACPIREGS *ar)
{
- if (!pm1) {
- qemu_system_shutdown_request();
- } else if (pm1->en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
- pm1->sts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
- tmr->update_sci(tmr);
+ if (ar->pm1.evt.en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
+ ar->pm1.evt.sts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
+ ar->tmr.update_sci(ar);
}
}
-void acpi_pm1_evt_reset(ACPIPM1EVT *pm1)
+void acpi_pm1_evt_reset(ACPIREGS *ar)
{
- pm1->sts = 0;
- pm1->en = 0;
+ ar->pm1.evt.sts = 0;
+ ar->pm1.evt.en = 0;
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC, 0);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER, 0);
}
/* ACPI PM_TMR */
-void acpi_pm_tmr_update(ACPIPMTimer *tmr, bool enable)
+void acpi_pm_tmr_update(ACPIREGS *ar, bool enable)
{
int64_t expire_time;
/* schedule a timer interruption if needed */
if (enable) {
- expire_time = muldiv64(tmr->overflow_time, get_ticks_per_sec(),
+ expire_time = muldiv64(ar->tmr.overflow_time, get_ticks_per_sec(),
PM_TIMER_FREQUENCY);
- qemu_mod_timer(tmr->timer, expire_time);
+ qemu_mod_timer(ar->tmr.timer, expire_time);
} else {
- qemu_del_timer(tmr->timer);
+ qemu_del_timer(ar->tmr.timer);
}
}
-void acpi_pm_tmr_calc_overflow_time(ACPIPMTimer *tmr)
+void acpi_pm_tmr_calc_overflow_time(ACPIREGS *ar)
{
int64_t d = acpi_pm_tmr_get_clock();
- tmr->overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
+ ar->tmr.overflow_time = (d + 0x800000LL) & ~0x7fffffLL;
}
-uint32_t acpi_pm_tmr_get(ACPIPMTimer *tmr)
+uint32_t acpi_pm_tmr_get(ACPIREGS *ar)
{
- uint32_t d = acpi_pm_tmr_get_clock();;
+ uint32_t d = acpi_pm_tmr_get_clock();
return d & 0xffffff;
}
static void acpi_pm_tmr_timer(void *opaque)
{
- ACPIPMTimer *tmr = opaque;
- tmr->update_sci(tmr);
+ ACPIREGS *ar = opaque;
+ qemu_system_wakeup_request(QEMU_WAKEUP_REASON_PMTIMER);
+ ar->tmr.update_sci(ar);
}
-void acpi_pm_tmr_init(ACPIPMTimer *tmr, acpi_update_sci_fn update_sci)
+void acpi_pm_tmr_init(ACPIREGS *ar, acpi_update_sci_fn update_sci)
{
- tmr->update_sci = update_sci;
- tmr->timer = qemu_new_timer_ns(vm_clock, acpi_pm_tmr_timer, tmr);
+ ar->tmr.update_sci = update_sci;
+ ar->tmr.timer = qemu_new_timer_ns(vm_clock, acpi_pm_tmr_timer, ar);
}
-void acpi_pm_tmr_reset(ACPIPMTimer *tmr)
+void acpi_pm_tmr_reset(ACPIREGS *ar)
{
- tmr->overflow_time = 0;
- qemu_del_timer(tmr->timer);
+ ar->tmr.overflow_time = 0;
+ qemu_del_timer(ar->tmr.timer);
}
/* ACPI PM1aCNT */
-void acpi_pm1_cnt_init(ACPIPM1CNT *pm1_cnt, qemu_irq cmos_s3)
+void acpi_pm1_cnt_init(ACPIREGS *ar)
{
- pm1_cnt->cmos_s3 = cmos_s3;
+ ar->wakeup.notify = acpi_notify_wakeup;
+ qemu_register_wakeup_notifier(&ar->wakeup);
}
-void acpi_pm1_cnt_write(ACPIPM1EVT *pm1a, ACPIPM1CNT *pm1_cnt, uint16_t val)
+void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val, char s4)
{
- pm1_cnt->cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
+ ar->pm1.cnt.cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
if (val & ACPI_BITMASK_SLEEP_ENABLE) {
/* change suspend type */
qemu_system_shutdown_request();
break;
case 1:
- /* ACPI_BITMASK_WAKE_STATUS should be set on resume.
- Pretend that resume was caused by power button */
- pm1a->sts |=
- (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
- qemu_system_reset_request();
- qemu_irq_raise(pm1_cnt->cmos_s3);
+ qemu_system_suspend_request();
+ break;
default:
+ if (sus_typ == s4) { /* S4 request */
+ monitor_protocol_event(QEVENT_SUSPEND_DISK, NULL);
+ qemu_system_shutdown_request();
+ }
break;
}
}
}
-void acpi_pm1_cnt_update(ACPIPM1CNT *pm1_cnt,
+void acpi_pm1_cnt_update(ACPIREGS *ar,
bool sci_enable, bool sci_disable)
{
/* ACPI specs 3.0, 4.7.2.5 */
if (sci_enable) {
- pm1_cnt->cnt |= ACPI_BITMASK_SCI_ENABLE;
+ ar->pm1.cnt.cnt |= ACPI_BITMASK_SCI_ENABLE;
} else if (sci_disable) {
- pm1_cnt->cnt &= ~ACPI_BITMASK_SCI_ENABLE;
+ ar->pm1.cnt.cnt &= ~ACPI_BITMASK_SCI_ENABLE;
}
}
-void acpi_pm1_cnt_reset(ACPIPM1CNT *pm1_cnt)
+void acpi_pm1_cnt_reset(ACPIREGS *ar)
{
- pm1_cnt->cnt = 0;
- if (pm1_cnt->cmos_s3) {
- qemu_irq_lower(pm1_cnt->cmos_s3);
- }
+ ar->pm1.cnt.cnt = 0;
}
/* ACPI GPE */
-void acpi_gpe_init(ACPIGPE *gpe, uint8_t len)
+void acpi_gpe_init(ACPIREGS *ar, uint8_t len)
{
- gpe->len = len;
- gpe->sts = qemu_mallocz(len / 2);
- gpe->en = qemu_mallocz(len / 2);
+ ar->gpe.len = len;
+ ar->gpe.sts = g_malloc0(len / 2);
+ ar->gpe.en = g_malloc0(len / 2);
}
-void acpi_gpe_blk(ACPIGPE *gpe, uint32_t blk)
+void acpi_gpe_blk(ACPIREGS *ar, uint32_t blk)
{
- gpe->blk = blk;
+ ar->gpe.blk = blk;
}
-void acpi_gpe_reset(ACPIGPE *gpe)
+void acpi_gpe_reset(ACPIREGS *ar)
{
- memset(gpe->sts, 0, gpe->len / 2);
- memset(gpe->en, 0, gpe->len / 2);
+ memset(ar->gpe.sts, 0, ar->gpe.len / 2);
+ memset(ar->gpe.en, 0, ar->gpe.len / 2);
}
-static uint8_t *acpi_gpe_ioport_get_ptr(ACPIGPE *gpe, uint32_t addr)
+static uint8_t *acpi_gpe_ioport_get_ptr(ACPIREGS *ar, uint32_t addr)
{
uint8_t *cur = NULL;
- if (addr < gpe->len / 2) {
- cur = gpe->sts + addr;
- } else if (addr < gpe->len) {
- cur = gpe->en + addr;
+ if (addr < ar->gpe.len / 2) {
+ cur = ar->gpe.sts + addr;
+ } else if (addr < ar->gpe.len) {
+ cur = ar->gpe.en + addr - ar->gpe.len / 2;
} else {
abort();
}
return cur;
}
-void acpi_gpe_ioport_writeb(ACPIGPE *gpe, uint32_t addr, uint32_t val)
+void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val)
{
uint8_t *cur;
- addr -= gpe->blk;
- cur = acpi_gpe_ioport_get_ptr(gpe, addr);
- if (addr < gpe->len / 2) {
+ addr -= ar->gpe.blk;
+ cur = acpi_gpe_ioport_get_ptr(ar, addr);
+ if (addr < ar->gpe.len / 2) {
/* GPE_STS */
*cur = (*cur) & ~val;
- } else if (addr < gpe->len) {
+ } else if (addr < ar->gpe.len) {
/* GPE_EN */
*cur = val;
} else {
}
}
-uint32_t acpi_gpe_ioport_readb(ACPIGPE *gpe, uint32_t addr)
+uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr)
{
uint8_t *cur;
uint32_t val;
- addr -= gpe->blk;
- cur = acpi_gpe_ioport_get_ptr(gpe, addr);
+ addr -= ar->gpe.blk;
+ cur = acpi_gpe_ioport_get_ptr(ar, addr);
val = 0;
if (cur != NULL) {
val = *cur;
projects / qemu.git / blobdiff