base: add simple exception tests

tests/asm/base/excp-1.S

@@ -0,0 +1,24 @@
+#include "test_start.S"
+
+        sys_rt_sigaction SIGSEGV, act
+        addd,0 0, 1, %g16
+    {
+        stb,2 %g16, [ flag ]
+        ldb,5 [ 0 ], %empty
+    }
+        sys_exit 1
+
+#include "test_end.S"
+
+sig_handler:
+        ldb,0 [ flag ], %g16
+        assert_eq_i64(%g16, 1)
+        exit_with_code
+
+    .section ".rodata"
+act:
+    init_sigaction sig_handler
+
+    .data
+flag:
+    .byte 0

tests/asm/base/excp-2.S

@@ -0,0 +1,24 @@
+#include "test_start.S"
+
+        sys_rt_sigaction SIGSEGV, act
+        addd,0 0, 1, %g16
+    {
+        ldb,0 [ 0 ], %empty
+        stb,2 %g16, [ flag ]
+    }
+        sys_exit 1
+
+#include "test_end.S"
+
+sig_handler:
+        ldb,0 [ flag ], %g16
+        assert_eq_i64(%g16, 0)
+        exit_with_code
+
+    .section ".rodata"
+act:
+    init_sigaction sig_handler
+
+    .data
+flag:
+    .byte 0

tests/asm/meson.build

@@ -44,6 +44,8 @@ asm_tests = {
     'exit-1': { 'should_fail': true },
     'template': {},
     'signal-1': {},
+    'excp-1': {},
+    'excp-2': {},
   },
   'win': {
     'setwd-1': {},