uint32_t *dst = (uint32_t *)data;
memcpy(dst, target_data, len);
- /* fix endianess of first 32-bit word */
+ /* fix endianness of first 32-bit word */
if (len >= sizeof(uint32_t)) {
*dst = tswap32(*dst);
}
unlock_user(results, optval_addr, 0);
return ret;
}
- /* swap host endianess to target endianess. */
+ /* swap host endianness to target endianness. */
for (i = 0; i < (len / sizeof(uint32_t)); i++) {
results[i] = tswap32(results[i]);
}
}
#endif
- #define N_SHM_REGIONS 32
-
- static struct shm_region {
- abi_ulong start;
- abi_ulong size;
- bool in_use;
- } shm_regions[N_SHM_REGIONS];
-
#ifndef TARGET_SEMID64_DS
/* asm-generic version of this struct */
struct target_semid64_ds
return ret;
}
- #ifndef TARGET_FORCE_SHMLBA
- /* For most architectures, SHMLBA is the same as the page size;
- * some architectures have larger values, in which case they should
- * define TARGET_FORCE_SHMLBA and provide a target_shmlba() function.
- * This corresponds to the kernel arch code defining __ARCH_FORCE_SHMLBA
- * and defining its own value for SHMLBA.
- *
- * The kernel also permits SHMLBA to be set by the architecture to a
- * value larger than the page size without setting __ARCH_FORCE_SHMLBA;
- * this means that addresses are rounded to the large size if
- * SHM_RND is set but addresses not aligned to that size are not rejected
- * as long as they are at least page-aligned. Since the only architecture
- * which uses this is ia64 this code doesn't provide for that oddity.
- */
- static inline abi_ulong target_shmlba(CPUArchState *cpu_env)
- {
- return TARGET_PAGE_SIZE;
- }
- #endif
-
- static abi_ulong do_shmat(CPUArchState *cpu_env, int shmid,
- abi_ulong shmaddr, int shmflg)
- {
- CPUState *cpu = env_cpu(cpu_env);
- abi_ulong raddr;
- void *host_raddr;
- struct shmid_ds shm_info;
- int i, ret;
- abi_ulong shmlba;
-
- /* shmat pointers are always untagged */
-
- /* find out the length of the shared memory segment */
- ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info));
- if (is_error(ret)) {
- /* can't get length, bail out */
- return ret;
- }
-
- shmlba = target_shmlba(cpu_env);
-
- if (shmaddr & (shmlba - 1)) {
- if (shmflg & SHM_RND) {
- shmaddr &= ~(shmlba - 1);
- } else {
- return -TARGET_EINVAL;
- }
- }
- if (!guest_range_valid_untagged(shmaddr, shm_info.shm_segsz)) {
- return -TARGET_EINVAL;
- }
-
- mmap_lock();
-
- /*
- * We're mapping shared memory, so ensure we generate code for parallel
- * execution and flush old translations. This will work up to the level
- * supported by the host -- anything that requires EXCP_ATOMIC will not
- * be atomic with respect to an external process.
- */
- if (!(cpu->tcg_cflags & CF_PARALLEL)) {
- cpu->tcg_cflags |= CF_PARALLEL;
- tb_flush(cpu);
- }
-
- if (shmaddr)
- host_raddr = shmat(shmid, (void *)g2h_untagged(shmaddr), shmflg);
- else {
- abi_ulong mmap_start;
-
- /* In order to use the host shmat, we need to honor host SHMLBA. */
- mmap_start = mmap_find_vma(0, shm_info.shm_segsz, MAX(SHMLBA, shmlba));
-
- if (mmap_start == -1) {
- errno = ENOMEM;
- host_raddr = (void *)-1;
- } else
- host_raddr = shmat(shmid, g2h_untagged(mmap_start),
- shmflg | SHM_REMAP);
- }
-
- if (host_raddr == (void *)-1) {
- mmap_unlock();
- return get_errno((intptr_t)host_raddr);
- }
- raddr = h2g((uintptr_t)host_raddr);
-
- page_set_flags(raddr, raddr + shm_info.shm_segsz - 1,
- PAGE_VALID | PAGE_RESET | PAGE_READ |
- (shmflg & SHM_RDONLY ? 0 : PAGE_WRITE));
-
- for (i = 0; i < N_SHM_REGIONS; i++) {
- if (!shm_regions[i].in_use) {
- shm_regions[i].in_use = true;
- shm_regions[i].start = raddr;
- shm_regions[i].size = shm_info.shm_segsz;
- break;
- }
- }
-
- mmap_unlock();
- return raddr;
- }
-
- static inline abi_long do_shmdt(abi_ulong shmaddr)
- {
- int i;
- abi_long rv;
-
- /* shmdt pointers are always untagged */
-
- mmap_lock();
-
- for (i = 0; i < N_SHM_REGIONS; ++i) {
- if (shm_regions[i].in_use && shm_regions[i].start == shmaddr) {
- shm_regions[i].in_use = false;
- page_set_flags(shmaddr, shmaddr + shm_regions[i].size - 1, 0);
- break;
- }
- }
- rv = get_errno(shmdt(g2h_untagged(shmaddr)));
-
- mmap_unlock();
-
- return rv;
- }
-
#ifdef TARGET_NR_ipc
/* ??? This only works with linear mappings. */
/* do_ipc() must return target values and target errnos. */
default:
{
abi_ulong raddr;
- raddr = do_shmat(cpu_env, first, ptr, second);
+ raddr = target_shmat(cpu_env, first, ptr, second);
if (is_error(raddr))
return get_errno(raddr);
if (put_user_ual(raddr, third))
}
break;
case IPCOP_shmdt:
- ret = do_shmdt(ptr);
+ ret = target_shmdt(ptr);
break;
case IPCOP_shmget:
return 0;
}
- static void show_smaps(int fd, unsigned long size)
+ struct open_self_maps_data {
+ TaskState *ts;
+ IntervalTreeRoot *host_maps;
+ int fd;
+ bool smaps;
+ };
+
+ /*
+ * Subroutine to output one line of /proc/self/maps,
+ * or one region of /proc/self/smaps.
+ */
+
+ #ifdef TARGET_HPPA
+ # define test_stack(S, E, L) (E == L)
+ #else
+ # define test_stack(S, E, L) (S == L)
+ #endif
+
+ static void open_self_maps_4(const struct open_self_maps_data *d,
+ const MapInfo *mi, abi_ptr start,
+ abi_ptr end, unsigned flags)
{
- unsigned long page_size_kb = TARGET_PAGE_SIZE >> 10;
- unsigned long size_kb = size >> 10;
+ const struct image_info *info = d->ts->info;
+ const char *path = mi->path;
+ uint64_t offset;
+ int fd = d->fd;
+ int count;
+
+ if (test_stack(start, end, info->stack_limit)) {
+ path = "[stack]";
+ } else if (start == info->brk) {
+ path = "[heap]";
+ }
+
+ /* Except null device (MAP_ANON), adjust offset for this fragment. */
+ offset = mi->offset;
+ if (mi->dev) {
+ uintptr_t hstart = (uintptr_t)g2h_untagged(start);
+ offset += hstart - mi->itree.start;
+ }
+
+ count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
+ " %c%c%c%c %08" PRIx64 " %02x:%02x %"PRId64,
+ start, end,
+ (flags & PAGE_READ) ? 'r' : '-',
+ (flags & PAGE_WRITE_ORG) ? 'w' : '-',
+ (flags & PAGE_EXEC) ? 'x' : '-',
+ mi->is_priv ? 'p' : 's',
+ offset, major(mi->dev), minor(mi->dev),
+ (uint64_t)mi->inode);
+ if (path) {
+ dprintf(fd, "%*s%s\n", 73 - count, "", path);
+ } else {
+ dprintf(fd, "\n");
+ }
+
+ if (d->smaps) {
+ unsigned long size = end - start;
+ unsigned long page_size_kb = TARGET_PAGE_SIZE >> 10;
+ unsigned long size_kb = size >> 10;
- dprintf(fd, "Size: %lu kB\n"
+ dprintf(fd, "Size: %lu kB\n"
"KernelPageSize: %lu kB\n"
"MMUPageSize: %lu kB\n"
"Rss: 0 kB\n"
"Private_Clean: 0 kB\n"
"Private_Dirty: 0 kB\n"
"Referenced: 0 kB\n"
- "Anonymous: 0 kB\n"
+ "Anonymous: %lu kB\n"
"LazyFree: 0 kB\n"
"AnonHugePages: 0 kB\n"
"ShmemPmdMapped: 0 kB\n"
"Swap: 0 kB\n"
"SwapPss: 0 kB\n"
"Locked: 0 kB\n"
- "THPeligible: 0\n", size_kb, page_size_kb, page_size_kb);
+ "THPeligible: 0\n"
+ "VmFlags:%s%s%s%s%s%s%s%s\n",
+ size_kb, page_size_kb, page_size_kb,
+ (flags & PAGE_ANON ? size_kb : 0),
+ (flags & PAGE_READ) ? " rd" : "",
+ (flags & PAGE_WRITE_ORG) ? " wr" : "",
+ (flags & PAGE_EXEC) ? " ex" : "",
+ mi->is_priv ? "" : " sh",
+ (flags & PAGE_READ) ? " mr" : "",
+ (flags & PAGE_WRITE_ORG) ? " mw" : "",
+ (flags & PAGE_EXEC) ? " me" : "",
+ mi->is_priv ? "" : " ms");
+ }
}
- static int open_self_maps_1(CPUArchState *cpu_env, int fd, bool smaps)
+ /*
+ * Callback for walk_memory_regions, when read_self_maps() fails.
+ * Proceed without the benefit of host /proc/self/maps cross-check.
+ */
+ static int open_self_maps_3(void *opaque, target_ulong guest_start,
+ target_ulong guest_end, unsigned long flags)
{
- CPUState *cpu = env_cpu(cpu_env);
- TaskState *ts = cpu->opaque;
- IntervalTreeRoot *map_info = read_self_maps();
- IntervalTreeNode *s;
- int count;
+ static const MapInfo mi = { .is_priv = true };
- for (s = interval_tree_iter_first(map_info, 0, -1); s;
- s = interval_tree_iter_next(s, 0, -1)) {
- MapInfo *e = container_of(s, MapInfo, itree);
+ open_self_maps_4(opaque, &mi, guest_start, guest_end, flags);
+ return 0;
+ }
- if (h2g_valid(e->itree.start)) {
- unsigned long min = e->itree.start;
- unsigned long max = e->itree.last + 1;
- int flags = page_get_flags(h2g(min));
- const char *path;
+ /*
+ * Callback for walk_memory_regions, when read_self_maps() succeeds.
+ */
+ static int open_self_maps_2(void *opaque, target_ulong guest_start,
+ target_ulong guest_end, unsigned long flags)
+ {
+ const struct open_self_maps_data *d = opaque;
+ uintptr_t host_start = (uintptr_t)g2h_untagged(guest_start);
+ uintptr_t host_last = (uintptr_t)g2h_untagged(guest_end - 1);
- max = h2g_valid(max - 1) ?
- max : (uintptr_t) g2h_untagged(GUEST_ADDR_MAX) + 1;
+ while (1) {
+ IntervalTreeNode *n =
+ interval_tree_iter_first(d->host_maps, host_start, host_start);
+ MapInfo *mi = container_of(n, MapInfo, itree);
+ uintptr_t this_hlast = MIN(host_last, n->last);
+ target_ulong this_gend = h2g(this_hlast) + 1;
- if (!page_check_range(h2g(min), max - min, flags)) {
- continue;
- }
+ open_self_maps_4(d, mi, guest_start, this_gend, flags);
- #ifdef TARGET_HPPA
- if (h2g(max) == ts->info->stack_limit) {
- #else
- if (h2g(min) == ts->info->stack_limit) {
- #endif
- path = "[stack]";
- } else {
- path = e->path;
- }
-
- count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
- " %c%c%c%c %08" PRIx64 " %s %"PRId64,
- h2g(min), h2g(max - 1) + 1,
- (flags & PAGE_READ) ? 'r' : '-',
- (flags & PAGE_WRITE_ORG) ? 'w' : '-',
- (flags & PAGE_EXEC) ? 'x' : '-',
- e->is_priv ? 'p' : 's',
- (uint64_t) e->offset, e->dev, e->inode);
- if (path) {
- dprintf(fd, "%*s%s\n", 73 - count, "", path);
- } else {
- dprintf(fd, "\n");
- }
- if (smaps) {
- show_smaps(fd, max - min);
- dprintf(fd, "VmFlags:%s%s%s%s%s%s%s%s\n",
- (flags & PAGE_READ) ? " rd" : "",
- (flags & PAGE_WRITE_ORG) ? " wr" : "",
- (flags & PAGE_EXEC) ? " ex" : "",
- e->is_priv ? "" : " sh",
- (flags & PAGE_READ) ? " mr" : "",
- (flags & PAGE_WRITE_ORG) ? " mw" : "",
- (flags & PAGE_EXEC) ? " me" : "",
- e->is_priv ? "" : " ms");
- }
+ if (this_hlast == host_last) {
+ return 0;
}
+ host_start = this_hlast + 1;
+ guest_start = h2g(host_start);
}
+ }
- free_self_maps(map_info);
+ static int open_self_maps_1(CPUArchState *env, int fd, bool smaps)
+ {
+ struct open_self_maps_data d = {
+ .ts = env_cpu(env)->opaque,
+ .host_maps = read_self_maps(),
+ .fd = fd,
+ .smaps = smaps
+ };
- #ifdef TARGET_VSYSCALL_PAGE
- /*
- * We only support execution from the vsyscall page.
- * This is as if CONFIG_LEGACY_VSYSCALL_XONLY=y from v5.3.
- */
- count = dprintf(fd, TARGET_FMT_lx "-" TARGET_FMT_lx
- " --xp 00000000 00:00 0",
- TARGET_VSYSCALL_PAGE, TARGET_VSYSCALL_PAGE + TARGET_PAGE_SIZE);
- dprintf(fd, "%*s%s\n", 73 - count, "", "[vsyscall]");
- if (smaps) {
- show_smaps(fd, TARGET_PAGE_SIZE);
- dprintf(fd, "VmFlags: ex\n");
+ if (d.host_maps) {
+ walk_memory_regions(&d, open_self_maps_2);
+ free_self_maps(d.host_maps);
+ } else {
+ walk_memory_regions(&d, open_self_maps_3);
}
- #endif
-
return 0;
}
}
}
+ #include "target_proc.h"
+
#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \
- defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) || \
- defined(TARGET_RISCV) || defined(TARGET_S390X)
+ defined(HAVE_ARCH_PROC_CPUINFO) || \
+ defined(HAVE_ARCH_PROC_HARDWARE)
static int is_proc(const char *filename, const char *entry)
{
return strcmp(filename, entry) == 0;
}
#endif
- #if defined(TARGET_SPARC)
- static int open_cpuinfo(CPUArchState *cpu_env, int fd)
- {
- dprintf(fd, "type\t\t: sun4u\n");
- return 0;
- }
- #endif
-
- #if defined(TARGET_HPPA)
- static int open_cpuinfo(CPUArchState *cpu_env, int fd)
- {
- int i, num_cpus;
-
- num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
- for (i = 0; i < num_cpus; i++) {
- dprintf(fd, "processor\t: %d\n", i);
- dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
- dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
- dprintf(fd, "capabilities\t: os32\n");
- dprintf(fd, "model\t\t: 9000/778/B160L - "
- "Merlin L2 160 QEMU (9000/778/B160L)\n\n");
- }
- return 0;
- }
- #endif
-
- #if defined(TARGET_RISCV)
- static int open_cpuinfo(CPUArchState *cpu_env, int fd)
- {
- int i;
- int num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
- RISCVCPU *cpu = env_archcpu(cpu_env);
- const RISCVCPUConfig *cfg = riscv_cpu_cfg((CPURISCVState *) cpu_env);
- char *isa_string = riscv_isa_string(cpu);
- const char *mmu;
-
- if (cfg->mmu) {
- mmu = (cpu_env->xl == MXL_RV32) ? "sv32" : "sv48";
- } else {
- mmu = "none";
- }
-
- for (i = 0; i < num_cpus; i++) {
- dprintf(fd, "processor\t: %d\n", i);
- dprintf(fd, "hart\t\t: %d\n", i);
- dprintf(fd, "isa\t\t: %s\n", isa_string);
- dprintf(fd, "mmu\t\t: %s\n", mmu);
- dprintf(fd, "uarch\t\t: qemu\n\n");
- }
-
- g_free(isa_string);
- return 0;
- }
- #endif
-
- #if defined(TARGET_S390X)
- /*
- * Emulate what a Linux kernel running in qemu-system-s390x -M accel=tcg would
- * show in /proc/cpuinfo.
- *
- * Skip the following in order to match the missing support in op_ecag():
- * - show_cacheinfo().
- * - show_cpu_topology().
- * - show_cpu_mhz().
- *
- * Use fixed values for certain fields:
- * - bogomips per cpu - from a qemu-system-s390x run.
- * - max thread id = 0, since SMT / SIGP_SET_MULTI_THREADING is not supported.
- *
- * Keep the code structure close to arch/s390/kernel/processor.c.
- */
-
- static void show_facilities(int fd)
- {
- size_t sizeof_stfl_bytes = 2048;
- g_autofree uint8_t *stfl_bytes = g_new0(uint8_t, sizeof_stfl_bytes);
- unsigned int bit;
-
- dprintf(fd, "facilities :");
- s390_get_feat_block(S390_FEAT_TYPE_STFL, stfl_bytes);
- for (bit = 0; bit < sizeof_stfl_bytes * 8; bit++) {
- if (test_be_bit(bit, stfl_bytes)) {
- dprintf(fd, " %d", bit);
- }
- }
- dprintf(fd, "\n");
- }
-
- static int cpu_ident(unsigned long n)
- {
- return deposit32(0, CPU_ID_BITS - CPU_PHYS_ADDR_BITS, CPU_PHYS_ADDR_BITS,
- n);
- }
-
- static void show_cpu_summary(CPUArchState *cpu_env, int fd)
- {
- S390CPUModel *model = env_archcpu(cpu_env)->model;
- int num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
- uint32_t elf_hwcap = get_elf_hwcap();
- const char *hwcap_str;
- int i;
-
- dprintf(fd, "vendor_id : IBM/S390\n"
- "# processors : %i\n"
- "bogomips per cpu: 13370.00\n",
- num_cpus);
- dprintf(fd, "max thread id : 0\n");
- dprintf(fd, "features\t: ");
- for (i = 0; i < sizeof(elf_hwcap) * 8; i++) {
- if (!(elf_hwcap & (1 << i))) {
- continue;
- }
- hwcap_str = elf_hwcap_str(i);
- if (hwcap_str) {
- dprintf(fd, "%s ", hwcap_str);
- }
- }
- dprintf(fd, "\n");
- show_facilities(fd);
- for (i = 0; i < num_cpus; i++) {
- dprintf(fd, "processor %d: "
- "version = %02X, "
- "identification = %06X, "
- "machine = %04X\n",
- i, model->cpu_ver, cpu_ident(i), model->def->type);
- }
- }
-
- static void show_cpu_ids(CPUArchState *cpu_env, int fd, unsigned long n)
- {
- S390CPUModel *model = env_archcpu(cpu_env)->model;
-
- dprintf(fd, "version : %02X\n", model->cpu_ver);
- dprintf(fd, "identification : %06X\n", cpu_ident(n));
- dprintf(fd, "machine : %04X\n", model->def->type);
- }
-
- static void show_cpuinfo(CPUArchState *cpu_env, int fd, unsigned long n)
- {
- dprintf(fd, "\ncpu number : %ld\n", n);
- show_cpu_ids(cpu_env, fd, n);
- }
-
- static int open_cpuinfo(CPUArchState *cpu_env, int fd)
- {
- int num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
- int i;
-
- show_cpu_summary(cpu_env, fd);
- for (i = 0; i < num_cpus; i++) {
- show_cpuinfo(cpu_env, fd, i);
- }
- return 0;
- }
- #endif
-
- #if defined(TARGET_M68K)
- static int open_hardware(CPUArchState *cpu_env, int fd)
- {
- dprintf(fd, "Model:\t\tqemu-m68k\n");
- return 0;
- }
- #endif
-
-
int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *fname,
int flags, mode_t mode, bool safe)
{
#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
{ "/proc/net/route", open_net_route, is_proc },
#endif
- #if defined(TARGET_SPARC) || defined(TARGET_HPPA) || \
- defined(TARGET_RISCV) || defined(TARGET_S390X)
+ #if defined(HAVE_ARCH_PROC_CPUINFO)
{ "/proc/cpuinfo", open_cpuinfo, is_proc },
#endif
- #if defined(TARGET_M68K)
+ #if defined(HAVE_ARCH_PROC_HARDWARE)
{ "/proc/hardware", open_hardware, is_proc },
#endif
{ NULL, NULL, NULL }
#endif
#ifdef TARGET_NR_shmat
case TARGET_NR_shmat:
- return do_shmat(cpu_env, arg1, arg2, arg3);
+ return target_shmat(cpu_env, arg1, arg2, arg3);
#endif
#ifdef TARGET_NR_shmdt
case TARGET_NR_shmdt:
- return do_shmdt(arg1);
+ return target_shmdt(arg1);
#endif
case TARGET_NR_fsync:
return get_errno(fsync(arg1));
projects / mirror_qemu.git / commitdiff