Commit 4690764b authored by bellard's avatar bellard
Browse files

update


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@312 c046a42c-6fe2-441c-8c8c-71466251a162
parent 3c1cf9fa
version 0.4.2:
- many exception handling fixes (can compile a Linux kernel inside vl)
- IDE emulation support
- initial GDB stub support
- deferred update support for disk images (Rusty Russell)
- accept user mode Linux Copy On Write disk images
- SMP kernels can at least be booted
version 0.4.1:
- more accurate timer support in vl.
......
......@@ -141,7 +141,7 @@ endif
# must use static linking to avoid leaving stuff in virtual address space
vl: vl.o block.o libqemu.a
$(CC) -pg -static -Wl,-T,i386-vl.ld -o $@ $^ $(LIBS)
$(CC) -static -Wl,-T,i386-vl.ld -o $@ $^ $(LIBS)
vlmkcow: vlmkcow.o
$(CC) -o $@ $^ $(LIBS)
......@@ -213,11 +213,11 @@ dyngen.c dyngen.h dyngen-exec.h ioctls.h syscall_types.h \
Makefile elf.h elfload.c main.c signal.c qemu.h \
syscall.c syscall_defs.h vm86.c path.c mmap.c \
i386.ld ppc.ld alpha.ld s390.ld sparc.ld arm.ld\
vl.c i386-vl.ld vl.h block.c\
vl.c i386-vl.ld vl.h block.c vlmkcow.c\
thunk.c cpu-exec.c translate.c cpu-all.h thunk.h exec.h\
exec.c cpu-exec.c\
exec.c cpu-exec.c gdbstub.c\
cpu-i386.h op-i386.c helper-i386.c syscall-i386.h translate-i386.c \
exec-i386.h ops_template.h op_string.h opreg_template.h \
exec-i386.h ops_template.h ops_template_mem.h op_string.h opreg_template.h \
cpu-arm.h syscall-arm.h exec-arm.h op-arm.c translate-arm.c op-arm-template.h \
dis-asm.h disas.c disas.h alpha-dis.c ppc-dis.c i386-dis.c sparc-dis.c \
arm-dis.c \
......
- finish segment ops (call far, ret far, load_seg suppressed)
- fix arm fpu rounding (at least for float->integer conversions)
- optimize FPU operations (evaluate x87 stack pointer statically) and
fix cr0.TS emulation
- fix CCOP optimisation
- optimize FPU operations (evaluate x87 stack pointer statically)
- fpush not before mem load restarting
- fix all remaining thread lock issues (must put TBs in a specific invalid
state, find a solution for tb_flush()).
- add gcc 2.96 test configure (some gcc3 flags are needed)
- cpu loop optimisation (optimise ret case as the cpu state does not change)
- fix arm fpu rounding (at least for float->integer conversions)
- add IPC syscalls
lower priority:
--------------
- sysenter/sysexit emulation
- SMP support
- finish segment ops (call far, ret far, load_seg suppressed)
- use -msoft-float on ARM
- use kernel traps for unaligned accesses on ARM ?
- handle rare page fault cases (in particular if page fault in heplers or
......
0.4.1
\ No newline at end of file
0.4.2
\ No newline at end of file
......@@ -311,7 +311,7 @@ extern CPUState *cpu_single_env;
#define CPU_INTERRUPT_EXIT 0x01 /* wants exit from main loop */
#define CPU_INTERRUPT_HARD 0x02 /* hardware interrupt pending */
void cpu_interrupt(CPUX86State *s, int mask);
void cpu_interrupt(CPUState *s, int mask);
/* gdb stub API */
extern int gdbstub_fd;
......
......@@ -49,7 +49,6 @@ typedef struct CPUARMState {
CPUARMState *cpu_arm_init(void);
int cpu_arm_exec(CPUARMState *s);
void cpu_arm_interrupt(CPUARMState *s);
void cpu_arm_close(CPUARMState *s);
/* you can call this signal handler from your SIGBUS and SIGSEGV
signal handlers to inform the virtual CPU of exceptions. non zero
......
......@@ -240,9 +240,9 @@ This section explains how to launch a Linux kernel inside QEMU.
@enumerate
@item
Download the archive @file{vl-test-xxx.tar.gz} containing a Linux kernel
and an initrd (initial Ram Disk). The archive also contains a
precompiled version of @file{vl}, the QEMU System emulator.
Download the archive @file{vl-test-xxx.tar.gz} containing a Linux
kernel and a disk image. The archive also contains a precompiled
version of @file{vl}, the QEMU System emulator.
@item Optional: If you want network support (for example to launch X11 examples), you
must copy the script @file{vl-ifup} in @file{/etc} and configure
......@@ -262,20 +262,25 @@ seen from the emulated kernel at IP address 172.20.0.1.
> ./vl.sh
connected to host network interface: tun0
Uncompressing Linux... Ok, booting the kernel.
Linux version 2.4.20 (bellard@voyager) (gcc version 2.95.2 20000220 (Debian GNU/Linux)) #42 Wed Jun 25 14:16:12 CEST 2003
Linux version 2.4.20 (fabrice@localhost.localdomain) (gcc version 2.96 20000731 (Red Hat Linux 7.3 2.96-110)) #22 lun jui 7 13:37:41 CEST 2003
BIOS-provided physical RAM map:
BIOS-88: 0000000000000000 - 000000000009f000 (usable)
BIOS-88: 0000000000100000 - 0000000002000000 (usable)
BIOS-e801: 0000000000000000 - 000000000009f000 (usable)
BIOS-e801: 0000000000100000 - 0000000002000000 (usable)
32MB LOWMEM available.
On node 0 totalpages: 8192
zone(0): 4096 pages.
zone(1): 4096 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/ram ramdisk_size=6144
Kernel command line: root=/dev/hda ide1=noprobe ide2=noprobe ide3=noprobe ide4=noprobe ide5=noprobe
ide_setup: ide1=noprobe
ide_setup: ide2=noprobe
ide_setup: ide3=noprobe
ide_setup: ide4=noprobe
ide_setup: ide5=noprobe
Initializing CPU#0
Detected 501.785 MHz processor.
Calibrating delay loop... 973.20 BogoMIPS
Memory: 24776k/32768k available (725k kernel code, 7604k reserved, 151k data, 48k init, 0k highmem)
Detected 501.285 MHz processor.
Calibrating delay loop... 989.59 BogoMIPS
Memory: 29268k/32768k available (907k kernel code, 3112k reserved, 212k data, 52k init, 0k highmem)
Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
......@@ -289,24 +294,30 @@ Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS not found.
Starting kswapd
Journalled Block Device driver loaded
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with no serial options enabled
ttyS00 at 0x03f8 (irq = 4) is a 16450
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
hda: QEMU HARDDISK, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: 12288 sectors (6 MB) w/256KiB Cache, CHS=12/16/63
Partition check:
hda: unknown partition table
ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)
Last modified Nov 1, 2000 by Paul Gortmaker
NE*000 ethercard probe at 0x300: 52 54 00 12 34 56
eth0: NE2000 found at 0x300, using IRQ 9.
RAMDISK driver initialized: 16 RAM disks of 6144K size 1024 blocksize
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 2048 bind 2048)
TCP: Hash tables configured (established 2048 bind 4096)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 6144 blocks [1 disk] into ram disk... done.
Freeing initrd memory: 6144k freed
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 48k freed
Freeing unused kernel memory: 52k freed
sh: can't access tty; job control turned off
#
@end example
......@@ -338,7 +349,7 @@ a real Virtual Linux system !
NOTES:
@enumerate
@item
A 2.5.66 kernel is also included in the vl-test archive. Just
A 2.5.74 kernel is also included in the vl-test archive. Just
replace the bzImage in vl.sh to try it.
@item
......@@ -348,7 +359,19 @@ a temporary directory using the tmpfs filesystem to avoid too many
unnecessary disk accesses.
@item
The example initrd is a modified version of the one made by Kevin
In order to exit cleanly for vl, you can do a @emph{shutdown} inside
vl. vl will automatically exit when the Linux shutdown is done.
@item
You can boot slightly faster by disabling the probe of non present IDE
interfaces. To do so, add the following options on the kernel command
line:
@example
ide1=noprobe ide2=noprobe ide3=noprobe ide4=noprobe ide5=noprobe
@end example
@item
The example disk image is a modified version of the one made by Kevin
Lawton for the plex86 Project (@url{www.plex86.org}).
@end enumerate
......@@ -363,9 +386,6 @@ usage: vl [options] bzImage [kernel parameters...]
General options:
@table @option
@item -initrd file
Use 'file' as initial ram disk.
@item -hda file
@item -hdb file
Use 'file' as hard disk 0 or 1 image (@xref{disk_images}).
......@@ -383,6 +403,9 @@ Set virtual RAM size to @var{megs} megabytes.
Set network init script [default=/etc/vl-ifup]. This script is
launched to configure the host network interface (usually tun0)
corresponding to the virtual NE2000 card.
@item -initrd file
Use 'file' as initial ram disk.
@end table
Debug options:
......@@ -481,13 +504,17 @@ Since holes are used, the displayed size of the COW disk image is not
the real one. To know it, use the @code{ls -ls} command.
@end enumerate
@section Kernel Compilation
@section Linux Kernel Compilation
You should be able to use any kernel with QEMU provided you make the
following changes (only 2.4.x and 2.5.x were tested):
You can use any Linux kernel within QEMU provided it is mapped at
address 0x90000000 (the default is 0xc0000000). You must modify only two
lines in the kernel source:
@enumerate
@item
The kernel must be mapped at 0x90000000 (the default is
0xc0000000). You must modify only two lines in the kernel source:
In asm/page.h, replace
In @file{include/asm/page.h}, replace
@example
#define __PAGE_OFFSET (0xc0000000)
@end example
......@@ -496,7 +523,7 @@ by
#define __PAGE_OFFSET (0x90000000)
@end example
And in arch/i386/vmlinux.lds, replace
And in @file{arch/i386/vmlinux.lds}, replace
@example
. = 0xc0000000 + 0x100000;
@end example
......@@ -505,22 +532,25 @@ by
. = 0x90000000 + 0x100000;
@end example
The file config-2.4.20 gives the configuration of the example kernel.
Just type
@item
If you want to enable SMP (Symmetric Multi-Processing) support, you
must make the following change in @file{include/asm/fixmap.h}. Replace
@example
make bzImage
#define FIXADDR_TOP (0xffffX000UL)
@end example
by
@example
#define FIXADDR_TOP (0xa7ffX000UL)
@end example
(X is 'e' or 'f' depending on the kernel version). Although you can
use an SMP kernel with QEMU, it only supports one CPU.
As you would do to make a real kernel. Then you can use with QEMU
exactly the same kernel as you would boot on your PC (in
@file{arch/i386/boot/bzImage}).
@item
If you are not using a 2.5 kernel as host kernel but if you use a target
2.5 kernel, you must also ensure that the 'HZ' define is set to 100
(1000 is the default) as QEMU cannot currently emulate timers at
frequencies greater than 100 Hz on host Linux systems < 2.5. In
asm/param.h, replace:
@file{include/asm/param.h}, replace:
@example
# define HZ 1000 /* Internal kernel timer frequency */
......@@ -530,8 +560,18 @@ by
# define HZ 100 /* Internal kernel timer frequency */
@end example
If you have problems running your kernel, verify that neither the SMP nor
HIGHMEM configuration options are activated.
@end enumerate
The file config-2.x.x gives the configuration of the example kernels.
Just type
@example
make bzImage
@end example
As you would do to make a real kernel. Then you can use with QEMU
exactly the same kernel as you would boot on your PC (in
@file{arch/i386/boot/bzImage}).
@section PC Emulation
......@@ -733,7 +773,7 @@ Correct translated code invalidation is done efficiently by maintaining
a linked list of every translated block contained in a given page. Other
linked lists are also maintained to undo direct block chaining.
Althought the overhead of doing @code{mprotect()} calls is important,
Although the overhead of doing @code{mprotect()} calls is important,
most MSDOS programs can be emulated at reasonnable speed with QEMU and
DOSEMU.
......@@ -802,7 +842,7 @@ reentrancy.
@section Self-virtualization
QEMU was conceived so that ultimately it can emulate itself. Althought
QEMU was conceived so that ultimately it can emulate itself. Although
it is not very useful, it is an important test to show the power of the
emulator.
......
......@@ -85,7 +85,8 @@ int cow_create(int cow_fd, const char *image_filename,
void help(void)
{
printf("usage vlmkcow [-h] [-f disk_image] cow_image [cow_size]\n"
printf("vlmkcow version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
"usage: vlmkcow [-h] [-f disk_image] cow_image [cow_size]\n"
"Create a Copy On Write disk image from an optional raw disk image\n"
"\n"
"-f disk_image set the raw disk image name\n"
......
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