Extend builtin arguments with a pointer addition operator

This extension enables more addressing modes to be encoded as builtin arguments and used in conjunction with volatile memory accesses.

Current status: x86 port only, the only new addressing mode handled is reg + offset.

3 files changed, 35 insertions, 1 deletions

diff --git a/test/regression/Makefile b/test/regression/Makefile
index 54745863..25b47c7e 100644
--- a/test/regression/Makefile
+++ b/test/regression/Makefile
@@ -10,7 +10,7 @@ LIBS=$(LIBMATH)
 
 TESTS=int32 int64 floats floats-basics \
   expr1 expr6 funptr2 initializers initializers2 initializers3 \
-  volatile1 volatile2 volatile3 \
+  volatile1 volatile2 volatile3 volatile4 \
   funct3 expr5 struct7 struct8 struct11 struct12 casts1 casts2 char1 \
   sizeof1 sizeof2 binops bool for1 switch switch2 compound \
   decl1 interop1 bitfields9 ptrs3 \
diff --git a/test/regression/Results/volatile4 b/test/regression/Results/volatile4
new file mode 100644
index 00000000..e650a8e5
--- /dev/null
+++ b/test/regression/Results/volatile4
@@ -0,0 +1,5 @@
+l = 42
+a[5] = 255
+g = 3
+b[2] = -1
+p[1] = 80
diff --git a/test/regression/volatile4.c b/test/regression/volatile4.c
new file mode 100644
index 00000000..b72e1bb9
--- /dev/null
+++ b/test/regression/volatile4.c
@@ -0,0 +1,29 @@
+/* Addressing modes in volatiles */
+
+#include <stdio.h>
+
+volatile int g = 1;
+volatile int b[10];
+
+void test1(volatile int * p)
+{
+  volatile int l;
+  volatile int a[10];
+
+  l = 42;
+  printf ("l = %d\n", l);
+  a[5] = 0xff;
+  printf ("a[5] = %d\n", a[5]);
+  g = 3;
+  printf ("g = %d\n", g);
+  b[2] = -1;
+  printf ("b[2] = %d\n", b[2]);
+  p[1] = 80;
+  printf ("p[1] = %d\n", p[1]);
+}
+
+int main()
+{
+  test1(&b[0]);
+  return 0;
+}