motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-06 09:13:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target/ppc: check tb_env != 0 before printing TBU/TBL/DECR

Browse source 
When using "-machine none", env->tb_env is not allocated, causing the
segmentation fault reported in issue #85 (launchpad bug #811683). To
avoid this problem, check if the pointer != NULL before calling the
methods to print TBU/TBL/DECR.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/85
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220714172343.80539-1-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Matheus Ferst 2022-07-14 14:23:43 -03:00 • committed by Daniel Henrique Barboza
parent 491a25535c
commit 3778aa970f
2 changed files with 17 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

9
target/ppc/monitor.c
View file

@ -55,6 +55,9 @@ static target_long monitor_get_decr(Monitor *mon, const struct MonitorDef *md,
int val)
{
CPUArchState *env = mon_get_cpu_env(mon);
if (!env->tb_env) {
return 0;
}
return cpu_ppc_load_decr(env);
}
@ -62,6 +65,9 @@ static target_long monitor_get_tbu(Monitor *mon, const struct MonitorDef *md,
int val)
{
CPUArchState *env = mon_get_cpu_env(mon);
if (!env->tb_env) {
return 0;
}
return cpu_ppc_load_tbu(env);
}
@ -69,6 +75,9 @@ static target_long monitor_get_tbl(Monitor *mon, const struct MonitorDef *md,
int val)
{
CPUArchState *env = mon_get_cpu_env(mon);
if (!env->tb_env) {
return 0;
}
return cpu_ppc_load_tbl(env);
}