#include <string.h>
#include <errno.h>
#include <unistd.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; \
-}
+#ifdef _WIN32
+#include <windows.h>
+#elif defined(_BSD)
+#include <stdlib.h>
+#else
+#include <malloc.h>
+#endif
-#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; \
+void *get_mmap_addr(unsigned long size)
+{
+ return NULL;
}
-#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; \
+void qemu_free(void *ptr)
+{
+ free(ptr);
}
-int qemu_write(int fd, const void *buf, size_t n)
+void *qemu_malloc(size_t size)
{
- QEMU_SYSCALL3(write, fd, buf, n);
+ return malloc(size);
}
+#if defined(_WIN32)
-
-/****************************************************************/
-/* shmat replacement */
-
-int qemu_ipc(int call, unsigned long first,
- unsigned long second, unsigned long third,
- void *ptr, unsigned long fifth)
+void *qemu_vmalloc(size_t size)
{
- QEMU_SYSCALL6(ipc, call, first, second, third, ptr, fifth);
+ /* FIXME: this is not exactly optimal solution since VirtualAlloc
+ has 64Kb granularity, but at least it guarantees us that the
+ memory is page aligned. */
+ return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
}
-#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 qemu_vfree(void *ptr)
{
- 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;
+ VirtualFree(ptr, 0, MEM_RELEASE);
}
-/****************************************************************/
-/* 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;
+#else
-static MemoryBlock *first_free_block;
-static unsigned long malloc_addr = MALLOC_BASE;
+#if defined(USE_KQEMU)
-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;
-}
+#include <sys/vfs.h>
+#include <sys/mman.h>
+#include <fcntl.h>
-void *qemu_malloc(size_t size)
+void *kqemu_vmalloc(size_t size)
{
- MemoryBlock *mb, *mb1, **pmb;
+ static int phys_ram_fd = -1;
+ static int phys_ram_size = 0;
+ const char *tmpdir;
+ char phys_ram_file[1024];
void *ptr;
- size_t size1, area_size;
-
- if (size == 0)
- return NULL;
+#ifdef HOST_SOLARIS
+ struct statvfs stfs;
+#else
+ struct statfs stfs;
+#endif
- 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;
+ 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;
+
+ extern int ram_size;
+ free_space = (int64_t)stfs.f_bavail * stfs.f_bsize;
+ if ((ram_size + 8192 * 1024) >= free_space) {
+ ram_mb = (ram_size / (1024 * 1024));
+ fprintf(stderr,
+ "You do not have enough space in '%s' for the %d MB of QEMU virtual RAM.\n",
+ tmpdir, ram_mb);
+ if (strcmp(tmpdir, "/dev/shm") == 0) {
+ fprintf(stderr, "To have more space available provided you have enough RAM and swap, do as root:\n"
+ "umount /dev/shm\n"
+ "mount -t tmpfs -o size=%dm none /dev/shm\n",
+ ram_mb + 16);
+ } else {
+ fprintf(stderr,
+ "Use the '-m' option of QEMU to diminish the amount of virtual RAM or use the\n"
+ "QEMU_TMPDIR environment variable to set another directory where the QEMU\n"
+ "temporary RAM file will be opened.\n");
+ }
+ fprintf(stderr, "Or disable the accelerator module with -no-kqemu\n");
+ exit(1);
+ }
+ }
+ snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
+ tmpdir);
+ 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"
+ "Using '/tmp' as fallback.\n",
+ tmpdir);
+ snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX",
+ "/tmp");
+ 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);
+ }
+ }
+ unlink(phys_ram_file);
}
- 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;
+ size = (size + 4095) & ~4095;
+ ftruncate(phys_ram_fd, phys_ram_size + size);
+ ptr = mmap(NULL,
+ size,
+ PROT_WRITE | PROT_READ, MAP_SHARED,
+ phys_ram_fd, phys_ram_size);
+ if (ptr == MAP_FAILED) {
+ fprintf(stderr, "Could not map physical memory\n");
+ exit(1);
}
- 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
+ phys_ram_size += size;
return ptr;
}
-void qemu_free(void *ptr)
+void kqemu_vfree(void *ptr)
{
- MemoryBlock *mb;
-
- if (!ptr)
- return;
- mb = (MemoryBlock *)((uint8_t *)ptr - BLOCK_HEADER_SIZE);
- mb->next = first_free_block;
- first_free_block = mb;
+ /* may be useful some day, but currently we do not need to free */
}
-/****************************************************************/
-/* virtual memory allocation */
-
-unsigned long mmap_addr = PHYS_RAM_BASE;
+#endif
-void *get_mmap_addr(unsigned long size)
+/* alloc shared memory pages */
+void *qemu_vmalloc(size_t size)
{
- unsigned long addr;
- addr = mmap_addr;
- mmap_addr += ((size + 4095) & ~4095) + 4096;
- return (void *)addr;
-}
-
+#if defined(USE_KQEMU)
+ if (kqemu_allowed)
+ return kqemu_vmalloc(size);
+#endif
+#ifdef _BSD
+ return valloc(size);
#else
-
-int qemu_write(int fd, const void *buf, size_t n)
-{
- int ret;
- ret = write(fd, buf, n);
- if (ret < 0)
- return -errno;
- else
- return ret;
-}
-
-void *get_mmap_addr(unsigned long size)
-{
- return NULL;
+ return memalign(4096, size);
+#endif
}
-void qemu_free(void *ptr)
+void qemu_vfree(void *ptr)
{
+#if defined(USE_KQEMU)
+ if (kqemu_allowed)
+ kqemu_vfree(ptr);
+#endif
free(ptr);
}
-void *qemu_malloc(size_t size)
-{
- return malloc(size);
-}
-
#endif
void *qemu_mallocz(size_t size)
return ptr;
}
-/****************************************************************/
-/* printf support */
-
-static inline int qemu_isdigit(int c)
-{
- return c >= '0' && c <= '9';
-}
-
-#define OUTCHAR(c) (buflen > 0? (--buflen, *buf++ = (c)): 0)
-
-/* from BSD ppp sources */
-int qemu_vsnprintf(char *buf, int buflen, const char *fmt, va_list args)
-{
- int c, i, n;
- int width, prec, fillch;
- int base, len, neg;
- unsigned long val = 0;
- const char *f;
- char *str, *buf0;
- char num[32];
- static const char hexchars[] = "0123456789abcdef";
-
- buf0 = buf;
- --buflen;
- while (buflen > 0) {
- for (f = fmt; *f != '%' && *f != 0; ++f)
- ;
- if (f > fmt) {
- len = f - fmt;
- if (len > buflen)
- len = buflen;
- memcpy(buf, fmt, len);
- buf += len;
- buflen -= len;
- fmt = f;
- }
- if (*fmt == 0)
- break;
- c = *++fmt;
- width = prec = 0;
- fillch = ' ';
- if (c == '0') {
- fillch = '0';
- c = *++fmt;
- }
- if (c == '*') {
- width = va_arg(args, int);
- c = *++fmt;
- } else {
- while (qemu_isdigit(c)) {
- width = width * 10 + c - '0';
- c = *++fmt;
- }
- }
- if (c == '.') {
- c = *++fmt;
- if (c == '*') {
- prec = va_arg(args, int);
- c = *++fmt;
- } else {
- while (qemu_isdigit(c)) {
- prec = prec * 10 + c - '0';
- c = *++fmt;
- }
- }
- }
- /* modifiers */
- switch(c) {
- case 'l':
- c = *++fmt;
- break;
- default:
- break;
- }
- str = 0;
- base = 0;
- neg = 0;
- ++fmt;
- switch (c) {
- case 'd':
- i = va_arg(args, int);
- if (i < 0) {
- neg = 1;
- val = -i;
- } else
- val = i;
- base = 10;
- break;
- case 'o':
- val = va_arg(args, unsigned int);
- base = 8;
- break;
- case 'x':
- case 'X':
- val = va_arg(args, unsigned int);
- base = 16;
- break;
- case 'p':
- val = (unsigned long) va_arg(args, void *);
- base = 16;
- neg = 2;
- break;
- case 's':
- str = va_arg(args, char *);
- break;
- case 'c':
- num[0] = va_arg(args, int);
- num[1] = 0;
- str = num;
- break;
- default:
- *buf++ = '%';
- if (c != '%')
- --fmt; /* so %z outputs %z etc. */
- --buflen;
- continue;
- }
- if (base != 0) {
- str = num + sizeof(num);
- *--str = 0;
- while (str > num + neg) {
- *--str = hexchars[val % base];
- val = val / base;
- if (--prec <= 0 && val == 0)
- break;
- }
- switch (neg) {
- case 1:
- *--str = '-';
- break;
- case 2:
- *--str = 'x';
- *--str = '0';
- break;
- }
- len = num + sizeof(num) - 1 - str;
- } else {
- len = strlen(str);
- if (prec > 0 && len > prec)
- len = prec;
- }
- if (width > 0) {
- if (width > buflen)
- width = buflen;
- if ((n = width - len) > 0) {
- buflen -= n;
- for (; n > 0; --n)
- *buf++ = fillch;
- }
- }
- if (len > buflen)
- len = buflen;
- memcpy(buf, str, len);
- buf += len;
- buflen -= len;
- }
- *buf = 0;
- return buf - buf0;
-}
-
-void qemu_vprintf(const char *fmt, va_list ap)
-{
- char buf[1024];
- int len;
-
- len = qemu_vsnprintf(buf, sizeof(buf), fmt, ap);
- qemu_write(1, buf, len);
-}
-
-void qemu_printf(const char *fmt, ...)
+char *qemu_strdup(const char *str)
{
- va_list ap;
- va_start(ap, fmt);
- qemu_vprintf(fmt, ap);
- va_end(ap);
+ char *ptr;
+ ptr = qemu_malloc(strlen(str) + 1);
+ if (!ptr)
+ return NULL;
+ strcpy(ptr, str);
+ return ptr;
}
-
projects / qemu / blobdiff