From 4e588a4d0e1683488282658c057d4b44976d77d8 Mon Sep 17 00:00:00 2001 From: bellard Date: Thu, 7 Jul 2005 21:46:29 +0000 Subject: [PATCH] negative decr fix git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1510 c046a42c-6fe2-441c-8c8c-71466251a162 --- hw/ppc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/hw/ppc.c b/hw/ppc.c index 2146739a92..c460fec482 100644 --- a/hw/ppc.c +++ b/hw/ppc.c @@ -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; } -- 2.39.5