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x86: Debug register emulation (Jan Kiszka)

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Built on top of previously enhanced breakpoint/watchpoint support, this
patch adds full debug register emulation for the x86 architecture.

Many corner cases were considered, and the result was successfully
tested inside a Linux guest with gdb, but I won't be surprised if one
or two scenarios still behave differently in reality.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5747 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-11-18 21:08:15 +00:00
parent 2dc9f4117c
commit 01df040b52
5 changed files with 217 additions and 42 deletions
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4
target-i386/machine.c
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@ -259,6 +259,10 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
for(i = 0; i < 8; i++)
qemu_get_betls(f, &env->dr[i]);
cpu_breakpoint_remove_all(env, BP_CPU);
cpu_watchpoint_remove_all(env, BP_CPU);
for (i = 0; i < 4; i++)
hw_breakpoint_insert(env, i);
/* MMU */
qemu_get_sbe32s(f, &a20_mask);