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negative decr fix

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1510 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-07-07 21:46:29 +00:00
parent a368741bf2
commit 4e588a4d0e
1 changed files with 6 additions and 3 deletions
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9
hw/ppc.c
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@ -107,13 +107,16 @@ uint32_t cpu_ppc_load_decr (CPUState *env)
{
ppc_tb_t *tb_env = env->tb_env;
uint32_t decr;
int64_t diff;
decr = muldiv64(tb_env->decr_next - qemu_get_clock(vm_clock),
tb_env->tb_freq, ticks_per_sec);
diff = tb_env->decr_next - qemu_get_clock(vm_clock);
if (diff >= 0)
decr = muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
else
decr = -muldiv64(-diff, tb_env->tb_freq, ticks_per_sec);
#if defined(DEBUG_TB)
printf("%s: 0x%08x\n", __func__, decr);
#endif
return decr;
}