qemu-e2k/target/openrisc
Peter Maydell 7b0263cb14 target/openrisc: Remove dead code attempting to check "is timer disabled"
In the mtspr helper we attempt to check for "is the timer disabled"
with "if (env->ttmr & TIMER_NONE)".  This is wrong because TIMER_NONE
is zero and the condition is always false (Coverity complains about
the dead code.)

The correct check would be to test whether the TTMR_M field in the
register is equal to TIMER_NONE instead.  However, the
cpu_openrisc_timer_update() function checks whether the timer is
enabled (it looks at cpu->env.is_counting, which is set to 0 via
cpu_openrisc_count_stop() when the TTMR_M field is set to
TIMER_NONE), so there's no need to check for "timer disabled" in the
target/openrisc code.  Instead, simply remove the dead code.

Fixes: Coverity CID 1005812
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Stafford Horne <shorne@gmail.com>
Message-id: 20201103114654.18540-1-peter.maydell@linaro.org
2020-11-17 12:56:32 +00:00
..
cpu-param.h
cpu.c cpu: Use DeviceClass reset instead of a special CPUClass reset 2020-03-17 19:48:10 -04:00
cpu.h qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros 2020-09-18 14:12:32 -04:00
disas.c meson: target 2020-08-21 06:30:35 -04:00
exception_helper.c
exception.c
exception.h
fpu_helper.c softfloat: Name compare relation enum 2020-05-19 08:41:45 -07:00
gdbstub.c gdbstub: extend GByteArray to read register helpers 2020-03-17 17:38:38 +00:00
helper.h
insns.decode
interrupt_helper.c
interrupt.c
machine.c
meson.build meson: target 2020-08-21 06:30:35 -04:00
mmu.c
sys_helper.c target/openrisc: Remove dead code attempting to check "is timer disabled" 2020-11-17 12:56:32 +00:00
translate.c meson: target 2020-08-21 06:30:35 -04:00