Smoketest multicore.

When connecting to gdb, select a random thread and use that for the
current test.

Also replace infinite_loop with something that will later allow
smoketesting of more than one thread.

2 files changed, 40 insertions, 9 deletions

diff --git a/debug/programs/infinite_loop.S b/debug/programs/infinite_loop.S
new file mode 100644
index 0000000..4b83143
--- /dev/null
+++ b/debug/programs/infinite_loop.S
@@ -0,0 +1,40 @@
+#include "encoding.h"
+
+        .global main
+
+        // Load constants into all registers so we can test no register are
+        // clobbered after attaching.
+main:
+        csrr    x1, CSR_MISA
+        slli    x2, x1, 1
+        slli    x3, x2, 1
+        slli    x4, x3, 1
+        slli    x5, x4, 1
+        slli    x6, x5, 1
+        slli    x7, x6, 1
+        slli    x8, x7, 1
+        slli    x9, x8, 1
+        slli    x10, x9, 1
+        slli    x11, x10, 1
+        slli    x12, x11, 1
+        slli    x13, x12, 1
+        slli    x14, x13, 1
+        slli    x15, x14, 1
+        slli    x16, x15, 1
+        slli    x17, x16, 1
+        slli    x18, x17, 1
+        slli    x19, x18, 1
+        slli    x20, x19, 1
+        slli    x21, x20, 1
+        slli    x22, x21, 1
+        slli    x23, x22, 1
+        slli    x24, x23, 1
+        slli    x25, x24, 1
+        slli    x26, x25, 1
+        slli    x27, x26, 1
+        slli    x28, x27, 1
+        slli    x29, x28, 1
+        slli    x30, x29, 1
+        slli    x31, x30, 1
+1:
+        j       1b
diff --git a/debug/programs/infinite_loop.c b/debug/programs/infinite_loop.c
deleted file mode 100644
index 350d1de..0000000
--- a/debug/programs/infinite_loop.c
+++ /dev/null
@@ -1,9 +0,0 @@
-volatile int forever = 1;
-
-int main()
-{
-    while (forever)
-        ;
-
-    return 1;
-}