[Qemu-devel] [PATCH] hw/core/generic-loader: Allow PC to be set on command line

[Peter Maydell <peter.maydell@linaro.org>]

The documentation for the generic loader claims that you can
set the PC for a CPU with an option of the form
  -device loader,cpu-num=0,addr=0x10000004

However if you try this QEMU complains:
  cpu_num must be specified when setting a program counter

This is because we were testing against 0 rather than CPU_NONE.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
I've also noticed that you can't use this to specify that
the starting address should be in Thumb mode for Arm CPUs,
but I'm not so sure of the right way to fix that...

 hw/core/generic-loader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/core/generic-loader.c b/hw/core/generic-loader.c
index 46012673c3..cb0e68486d 100644
--- a/hw/core/generic-loader.c
+++ b/hw/core/generic-loader.c
@@ -105,7 +105,7 @@ static void generic_loader_realize(DeviceState *dev, Error **errp)
             error_setg(errp, "data can not be specified when setting a "
                        "program counter");
             return;
-        } else if (!s->cpu_num) {
+        } else if (s->cpu_num == CPU_NONE) {
             error_setg(errp, "cpu_num must be specified when setting a "
                        "program counter");
             return;
-- 
2.16.1