#include <string.h>
#include <errno.h>
#include <unistd.h>
+#include <fcntl.h>
+#ifdef HOST_SOLARIS
+#include <sys/types.h>
+#include <sys/statvfs.h>
+#endif
#include "cpu.h"
#if defined(USE_KQEMU)
#include "vl.h"
#endif
-#if defined(__i386__) && !defined(CONFIG_SOFTMMU) && !defined(CONFIG_USER_ONLY)
-
-#include <sys/mman.h>
-#include <sys/ipc.h>
-
-/* When not using soft mmu, libc independant functions are needed for
- the CPU core because it needs to use alternates stacks and
- libc/thread incompatibles settings */
-
-#include <linux/unistd.h>
-
-#define QEMU_SYSCALL0(name) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name)); \
-return __res; \
-}
-
-#define QEMU_SYSCALL1(name,arg1) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1))); \
-return __res; \
-}
-
-#define QEMU_SYSCALL2(name,arg1,arg2) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
-return __res; \
-}
-
-#define QEMU_SYSCALL3(name,arg1,arg2,arg3) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3))); \
-return __res; \
-}
-
-#define QEMU_SYSCALL4(name,arg1,arg2,arg3,arg4) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3)),"S" ((long)(arg4))); \
-return __res; \
-}
-
-#define QEMU_SYSCALL5(name,arg1,arg2,arg3,arg4,arg5) \
-{ \
-long __res; \
-__asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
-return __res; \
-}
-
-#define QEMU_SYSCALL6(name,arg1,arg2,arg3,arg4,arg5,arg6) \
-{ \
-long __res; \
-__asm__ volatile ("push %%ebp ; movl %%eax,%%ebp ; movl %1,%%eax ; int $0x80 ; pop %%ebp" \
- : "=a" (__res) \
- : "i" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5)), \
- "0" ((long)(arg6))); \
-return __res; \
-}
-
-/****************************************************************/
-/* shmat replacement */
-
-int qemu_ipc(int call, unsigned long first,
- unsigned long second, unsigned long third,
- void *ptr, unsigned long fifth)
-{
- QEMU_SYSCALL6(ipc, call, first, second, third, ptr, fifth);
-}
-
-#define SHMAT 21
-
-/* we must define shmat so that a specific address will be used when
- mapping the X11 ximage */
-void *shmat(int shmid, const void *shmaddr, int shmflg)
-{
- void *ptr;
- int ret;
- /* we give an address in the right memory area */
- if (!shmaddr)
- shmaddr = get_mmap_addr(8192 * 1024);
- ret = qemu_ipc(SHMAT, shmid, shmflg, (unsigned long)&ptr, (void *)shmaddr, 0);
- if (ret < 0)
- return NULL;
- return ptr;
-}
-
-/****************************************************************/
-/* sigaction bypassing the threads */
-
-static int kernel_sigaction(int signum, const struct qemu_sigaction *act,
- struct qemu_sigaction *oldact,
- int sigsetsize)
-{
- QEMU_SYSCALL4(rt_sigaction, signum, act, oldact, sigsetsize);
-}
-
-int qemu_sigaction(int signum, const struct qemu_sigaction *act,
- struct qemu_sigaction *oldact)
-{
- return kernel_sigaction(signum, act, oldact, 8);
-}
-
-/****************************************************************/
-/* memory allocation */
-
-//#define DEBUG_MALLOC
-
-#define MALLOC_BASE 0xab000000
-#define PHYS_RAM_BASE 0xac000000
-
-#define MALLOC_ALIGN 16
-#define BLOCK_HEADER_SIZE 16
-
-typedef struct MemoryBlock {
- struct MemoryBlock *next;
- unsigned long size; /* size of block, including header */
-} MemoryBlock;
-
-static MemoryBlock *first_free_block;
-static unsigned long malloc_addr = MALLOC_BASE;
-
-static void *malloc_get_space(size_t size)
-{
- void *ptr;
- size = TARGET_PAGE_ALIGN(size);
- ptr = mmap((void *)malloc_addr, size,
- PROT_WRITE | PROT_READ,
- MAP_PRIVATE | MAP_FIXED | MAP_ANON, -1, 0);
- if (ptr == MAP_FAILED)
- return NULL;
- malloc_addr += size;
- return ptr;
-}
-
-void *qemu_malloc(size_t size)
-{
- MemoryBlock *mb, *mb1, **pmb;
- void *ptr;
- size_t size1, area_size;
-
- if (size == 0)
- return NULL;
-
- size = (size + BLOCK_HEADER_SIZE + MALLOC_ALIGN - 1) & ~(MALLOC_ALIGN - 1);
- pmb = &first_free_block;
- for(;;) {
- mb = *pmb;
- if (mb == NULL)
- break;
- if (size <= mb->size)
- goto found;
- pmb = &mb->next;
- }
- /* no big enough blocks found: get new space */
- area_size = TARGET_PAGE_ALIGN(size);
- mb = malloc_get_space(area_size);
- if (!mb)
- return NULL;
- size1 = area_size - size;
- if (size1 > 0) {
- /* create a new free block */
- mb1 = (MemoryBlock *)((uint8_t *)mb + size);
- mb1->next = NULL;
- mb1->size = size1;
- *pmb = mb1;
- }
- goto the_end;
- found:
- /* a free block was found: use it */
- size1 = mb->size - size;
- if (size1 > 0) {
- /* create a new free block */
- mb1 = (MemoryBlock *)((uint8_t *)mb + size);
- mb1->next = mb->next;
- mb1->size = size1;
- *pmb = mb1;
- } else {
- /* suppress the first block */
- *pmb = mb->next;
- }
- the_end:
- mb->size = size;
- mb->next = NULL;
- ptr = ((uint8_t *)mb + BLOCK_HEADER_SIZE);
-#ifdef DEBUG_MALLOC
- qemu_printf("malloc: size=0x%x ptr=0x%lx\n", size, (unsigned long)ptr);
-#endif
- return ptr;
-}
-
-void qemu_free(void *ptr)
-{
- MemoryBlock *mb;
-
- if (!ptr)
- return;
- mb = (MemoryBlock *)((uint8_t *)ptr - BLOCK_HEADER_SIZE);
- mb->next = first_free_block;
- first_free_block = mb;
-}
-
-/****************************************************************/
-/* virtual memory allocation */
-
-unsigned long mmap_addr = PHYS_RAM_BASE;
-
-void *get_mmap_addr(unsigned long size)
-{
- unsigned long addr;
- addr = mmap_addr;
- mmap_addr += ((size + 4095) & ~4095) + 4096;
- return (void *)addr;
-}
-
-#else
-
#ifdef _WIN32
#include <windows.h>
#elif defined(_BSD)
const char *tmpdir;
char phys_ram_file[1024];
void *ptr;
+#ifdef HOST_SOLARIS
+ struct statvfs stfs;
+#else
struct statfs stfs;
+#endif
if (phys_ram_fd < 0) {
tmpdir = getenv("QEMU_TMPDIR");
if (!tmpdir)
+#ifdef HOST_SOLARIS
+ tmpdir = "/tmp";
+ if (statvfs(tmpdir, &stfs) == 0) {
+#else
tmpdir = "/dev/shm";
if (statfs(tmpdir, &stfs) == 0) {
+#endif
int64_t free_space;
int ram_mb;
}
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
tmpdir);
- if (mkstemp(phys_ram_file) < 0) {
+ phys_ram_fd = mkstemp(phys_ram_file);
+ if (phys_ram_fd < 0) {
fprintf(stderr,
"warning: could not create temporary file in '%s'.\n"
"Use QEMU_TMPDIR to select a directory in a tmpfs filesystem.\n"
tmpdir);
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
"/tmp");
- if (mkstemp(phys_ram_file) < 0) {
+ phys_ram_fd = mkstemp(phys_ram_file);
+ if (phys_ram_fd < 0) {
fprintf(stderr, "Could not create temporary memory file '%s'\n",
phys_ram_file);
exit(1);
}
}
- phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
- if (phys_ram_fd < 0) {
- fprintf(stderr, "Could not open temporary memory file '%s'\n",
- phys_ram_file);
- exit(1);
- }
unlink(phys_ram_file);
}
size = (size + 4095) & ~4095;
#endif
-#endif
-
void *qemu_mallocz(size_t size)
{
void *ptr;
strcpy(ptr, str);
return ptr;
}
+
+int qemu_create_pidfile(const char *filename)
+{
+ char buffer[128];
+ int len;
+#ifndef _WIN32
+ int fd;
+
+ fd = open(filename, O_RDWR | O_CREAT, 0600);
+ if (fd == -1)
+ return -1;
+
+ if (lockf(fd, F_TLOCK, 0) == -1)
+ return -1;
+
+ len = snprintf(buffer, sizeof(buffer), "%ld\n", (long)getpid());
+ if (write(fd, buffer, len) != len)
+ return -1;
+#else
+ HANDLE file;
+ DWORD flags;
+ OVERLAPPED overlap;
+ BOOL ret;
+
+ /* Open for writing with no sharing. */
+ file = CreateFile(filename, GENERIC_WRITE, 0, NULL,
+ OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+
+ if (file == INVALID_HANDLE_VALUE)
+ return -1;
+
+ flags = LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY;
+ overlap.hEvent = 0;
+ /* Lock 1 byte. */
+ ret = LockFileEx(file, flags, 0, 0, 1, &overlap);
+ if (ret == 0)
+ return -1;
+
+ /* Write PID to file. */
+ len = snprintf(buffer, sizeof(buffer), "%ld\n", (long)getpid());
+ ret = WriteFileEx(file, (LPCVOID)buffer, (DWORD)len,
+ &overlap, NULL);
+ if (ret == 0)
+ return -1;
+#endif
+ return 0;
+}
projects / qemu.git / blobdiff