QEMU

QEMU is a generic and open source processor emulator from Fabrice Bellard. This page contains some patches I wrote for QEMU.

QEMU does not build with gcc4 on x86 at this time because of a GCC change to fix other bugs. Here are some patches to wordaround this problem. x86_64-softmmu doesn't work though. Those patches were only tested with a post GCC 4.0.1 release snapshot.

• projects/qemu/files/qemu-0.7.0-gcc4.patch.bz2
  Original patch from Paul Brook + an addition to correctly decode imul.
• projects/qemu/files/qemu-0.7.2-dyngen-check-stack-clobbers.patch.bz2
  Check stack is not clobbered in synthetic opcodes using GOTO_LABEL_PARAM.
• projects/qemu/files/qemu-0.8.0-gcc4-hacks.patch.bz2
  Various workarounds to GCC ICEs. The softmmu asm optimization can be reactivated with a post GCC 4.0.2 release snapshot.
• projects/qemu/files/qemu-0.7.2-gcc4-opts.patch.bz2
  Don't generate stack variables for x86_64-softmmu case in functions using GOTO_LABEL_PARAM.

Note: Mike Kronenberg has now integrated the following patches into Q, a maintained port of QEMU to MacOS X. Universal binaries appeared in Q-0.8.0d562 and newer.

• projects/qemu/files/qemu-0.8.0-enforce-16byte-stack-boundary.patch.bz2
  Enforce 16-byte stack boundaries (the default).
• projects/qemu/files/qemu-0.8.0-i386-FORCE_RET.patch.bz2
  Try to enforce one exit point per synthetic opcode.
• projects/qemu/files/qemu-0.8.0-osx-intel-port.patch.bz2 (updated on 2006/03/17, Q-0.8.0d871)
  Port dyngen to MacOS X for Intel.