update
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@66 c046a42c-6fe2-441c-8c8c-71466251a162
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13
Makefile
13
Makefile
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@ -19,6 +19,10 @@ ifeq ($(ARCH),ppc)
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OP_CFLAGS=$(CFLAGS)
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OP_CFLAGS=$(CFLAGS)
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endif
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endif
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ifeq ($(ARCH),s390)
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OP_CFLAGS=$(CFLAGS)
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endif
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ifeq ($(GCC_MAJOR),3)
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ifeq ($(GCC_MAJOR),3)
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# very important to generate a return at the end of every operation
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# very important to generate a return at the end of every operation
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OP_CFLAGS+=-fno-reorder-blocks -fno-optimize-sibling-calls
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OP_CFLAGS+=-fno-reorder-blocks -fno-optimize-sibling-calls
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@ -94,19 +98,20 @@ qemu-doc.html: qemu-doc.texi
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texi2html -monolithic -number $<
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texi2html -monolithic -number $<
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FILES= \
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FILES= \
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README COPYING COPYING.LIB TODO Changelog VERSION \
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README README.distrib COPYING COPYING.LIB TODO Changelog VERSION \
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dyngen.c ioctls.h ops_template.h syscall_types.h\
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dyngen.c ioctls.h ops_template.h op_string.h syscall_types.h\
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Makefile elf.h linux_bin.h segment.h thunk.c\
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Makefile elf.h linux_bin.h segment.h thunk.c\
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elfload.c main.c signal.c thunk.h\
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elfload.c main.c signal.c thunk.h\
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cpu-i386.h qemu.h op-i386.c opc-i386.h syscall-i386.h translate-i386.c\
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cpu-i386.h qemu.h op-i386.c opc-i386.h syscall-i386.h translate-i386.c\
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dis-asm.h gen-i386.h op-i386.h syscall.c\
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dis-asm.h gen-i386.h op-i386.h syscall.c\
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dis-buf.c i386-dis.c opreg_template.h syscall_defs.h\
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dis-buf.c i386-dis.c opreg_template.h syscall_defs.h\
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i386.ld ppc.ld exec-i386.h exec-i386.c configure \
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i386.ld ppc.ld s390.ld exec-i386.h exec-i386.c configure \
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tests/Makefile\
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tests/Makefile\
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tests/test-i386.c tests/test-i386-shift.h tests/test-i386.h\
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tests/test-i386.c tests/test-i386-shift.h tests/test-i386.h\
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tests/test-i386-muldiv.h tests/test-i386-code16.S\
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tests/test-i386-muldiv.h tests/test-i386-code16.S\
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tests/hello.c tests/hello tests/sha1.c \
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tests/hello.c tests/hello tests/sha1.c \
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tests/testsig.c tests/testclone.c tests/testthread.c \
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tests/testsig.c tests/testclone.c tests/testthread.c \
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tests/runcom.c tests/pi_10.com \
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qemu-doc.texi qemu-doc.html
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qemu-doc.texi qemu-doc.html
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FILE=qemu-$(VERSION)
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FILE=qemu-$(VERSION)
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@ -12,8 +12,9 @@
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QEMU is an x86 processor emulator. Its purpose is to run x86 Linux
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QEMU is an x86 processor emulator. Its purpose is to run x86 Linux
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processes on non-x86 Linux architectures such as PowerPC or ARM. By
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processes on non-x86 Linux architectures such as PowerPC or ARM. By
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using dynamic translation it achieves a reasonnable speed while being
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using dynamic translation it achieves a reasonnable speed while being
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easy to port on new host CPUs. An obviously interesting x86 only process
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easy to port on new host CPUs. Its main goal is to be able to launch the
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is 'wine' (Windows emulation).
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@code{Wine} Windows API emulator (@url{http://www.winehq.org}) on
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non-x86 CPUs.
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QEMU features:
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QEMU features:
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@ -21,12 +22,13 @@ QEMU features:
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@item User space only x86 emulator.
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@item User space only x86 emulator.
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@item Currently ported on i386 and PowerPC.
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@item Currently ported on i386, PowerPC and S390.
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@item Using dynamic translation for reasonnable speed.
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@item Using dynamic translation to native code for reasonnable speed.
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@item The virtual x86 CPU supports 16 bit and 32 bit addressing with segmentation.
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@item The virtual x86 CPU supports 16 bit and 32 bit addressing with segmentation.
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User space LDT and GDT are emulated.
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User space LDT and GDT are emulated. VM86 mode is also supported
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(experimental).
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@item Generic Linux system call converter, including most ioctls.
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@item Generic Linux system call converter, including most ioctls.
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@ -52,10 +54,6 @@ Current QEMU Limitations:
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@item No support for self modifying code (yet). [Very few programs need that, a notable exception is QEMU itself !].
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@item No support for self modifying code (yet). [Very few programs need that, a notable exception is QEMU itself !].
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@item No VM86 mode (yet), althought the virtual
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CPU has support for most of it. [VM86 support is useful to launch old 16
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bit DOS programs with dosemu or wine].
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@item No SSE/MMX support (yet).
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@item No SSE/MMX support (yet).
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@item No x86-64 support.
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@item No x86-64 support.
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@ -123,10 +121,10 @@ able to do:
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qemu /usr/local/qemu-i386/bin/ls-i386
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qemu /usr/local/qemu-i386/bin/ls-i386
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@end example
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@end example
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@item Download the binary x86 wine install
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@item Download the binary x86 Wine install
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(@file{qemu-i386-wine.tar.gz} on the QEMU web page).
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(@file{qemu-i386-wine.tar.gz} on the QEMU web page).
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@item Configure wine on your account. Look at the provided script
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@item Configure Wine on your account. Look at the provided script
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@file{/usr/local/qemu-i386/bin/wine-conf.sh}. Your previous
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@file{/usr/local/qemu-i386/bin/wine-conf.sh}. Your previous
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@code{$@{HOME@}/.wine} directory is saved to @code{$@{HOME@}/.wine.org}.
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@code{$@{HOME@}/.wine} directory is saved to @code{$@{HOME@}/.wine.org}.
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@ -177,6 +175,13 @@ code, in particular the ELF file loader). EM86 was limited to an alpha
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host and used a proprietary and slow interpreter (the interpreter part
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host and used a proprietary and slow interpreter (the interpreter part
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of the FX!32 Digital Win32 code translator [5]).
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of the FX!32 Digital Win32 code translator [5]).
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TWIN [6] is a Windows API emulator like Wine. It is less accurate than
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Wine but includes a protected mode x86 interpreter to launch x86 Windows
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executables. Such an approach as greater potential because most of the
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Windows API is executed natively but it is far more difficult to develop
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because all the data structures and function parameters exchanged
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between the API and the x86 code must be converted.
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@section Portable dynamic translation
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@section Portable dynamic translation
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QEMU is a dynamic translator. When it first encounters a piece of code,
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QEMU is a dynamic translator. When it first encounters a piece of code,
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@ -218,7 +223,7 @@ doing complicated register allocation.
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Good CPU condition codes emulation (@code{EFLAGS} register on x86) is a
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Good CPU condition codes emulation (@code{EFLAGS} register on x86) is a
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critical point to get good performances. QEMU uses lazy condition code
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critical point to get good performances. QEMU uses lazy condition code
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evaluation: instead of computing the condition codes after each x86
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evaluation: instead of computing the condition codes after each x86
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instruction, it store justs one operand (called @code{CC_CRC}), the
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instruction, it just stores one operand (called @code{CC_SRC}), the
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result (called @code{CC_DST}) and the type of operation (called
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result (called @code{CC_DST}) and the type of operation (called
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@code{CC_OP}).
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@code{CC_OP}).
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@ -231,7 +236,7 @@ generated simple instructions (see
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the condition codes are not needed by the next instructions, no
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the condition codes are not needed by the next instructions, no
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condition codes are computed at all.
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condition codes are computed at all.
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@section Translation CPU state optimisations
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@section CPU state optimisations
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The x86 CPU has many internal states which change the way it evaluates
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The x86 CPU has many internal states which change the way it evaluates
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instructions. In order to achieve a good speed, the translation phase
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instructions. In order to achieve a good speed, the translation phase
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@ -323,6 +328,10 @@ x86 emulator on Alpha-Linux.
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DIGITAL FX!32: Running 32-Bit x86 Applications on Alpha NT, by Anton
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DIGITAL FX!32: Running 32-Bit x86 Applications on Alpha NT, by Anton
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Chernoff and Ray Hookway.
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Chernoff and Ray Hookway.
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@item [6]
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@url{http://www.willows.com/}, Windows API library emulation from
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Willows Software.
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@end table
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@end table
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@chapter Regression Tests
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@chapter Regression Tests
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@ -365,3 +374,9 @@ It is a simple benchmark. Care must be taken to interpret the results
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because it mostly tests the ability of the virtual CPU to optimize the
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because it mostly tests the ability of the virtual CPU to optimize the
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@code{rol} x86 instruction and the condition code computations.
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@code{rol} x86 instruction and the condition code computations.
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@section @file{runcom}
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A very simple MSDOS emulator to test the Linux vm86() system call
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emulation. The excellent 54 byte @file{pi_10.com} PI number calculator
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can be launched with it. @file{pi_10.com} was written by Bertram
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Felgenhauer (more information at @url{http://www.boo.net/~jasonp/pipage.html}).
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