1 files changed, 286 insertions, 0 deletions
diff --git a/test/regression/interop1.c b/test/regression/interop1.c
new file mode 100644
index 00000000..a39f449c
--- /dev/null
+++ b/test/regression/interop1.c
@@ -0,0 +1,286 @@
+#if defined(COMPCERT_SIDE)
+#define US(x) compcert_##x
+#define THEM(x) native_##x
+#elif defined(CC_SIDE)
+#define US(x) native_##x
+#define THEM(x) compcert_##x
+#else
+#define US(x) x
+#define THEM(x) x
+#endif
+
+#include <stdio.h>
+
+/* Alignment 1 */
+
+struct S1 { char a; };
+static struct S1 init_S1 = { 'a' };
+#define print_S1(x) printf("{ a = '%c' }\n", x.a)
+
+struct S2 { char a, b; };
+static struct S2 init_S2 = { 'a', 'b' };
+#define print_S2(x) printf("{ a = '%c', b = '%c' }\n", x.a, x.b)
+
+struct S3 { char a, b, c; };
+static struct S3 init_S3 = { 'a', 'b', 'c' };
+#define print_S3(x) \
+   printf("{ a = '%c', b = '%c', c = ' %c' }\n", x.a, x.b, x.c)
+
+struct S4 { char a, b, c, d; };
+static struct S4 init_S4 = { 'a', 'b', 'c', 'd' };
+#define print_S4(x) \
+   printf("{ a = '%c', b = '%c', c = ' %c', d = '%c' }\n", \
+          x.a, x.b, x.c, x.d);
+
+struct S5 { char a, b, c, d, e; };
+static struct S5 init_S5 = { 'a', 'b', 'c', 'd', 'e' };
+#define print_S5(x) \
+  printf("{ a = '%c', b = '%c', c = ' %c', d = '%c', e = '%c' }\n", \
+         x.a, x.b, x.c, x.d, x.e)
+
+struct S6 { char a, b, c, d, e, f; };
+static struct S6 init_S6 = { 'a', 'b', 'c', 'd', 'e', 'f' };
+#define print_S6(x) \
+  printf("{ a = '%c', b = '%c', c = ' %c', d = '%c', e = '%c', f = '%c' }\n", \
+         x.a, x.b, x.c, x.d, x.e, x.f)
+
+struct S7 { char a, b, c, d, e, f, g; };
+static struct S7 init_S7 = { 'a', 'b', 'c', 'd', 'e', 'f', 'g' };
+#define print_S7(x) \
+  printf("{ a = '%c', b = '%c', c = ' %c', d = '%c', e = '%c', f = '%c', g = '%c' }\n", \
+         x.a, x.b, x.c, x.d, x.e, x.f, x.g)
+
+struct S8 { char a[32]; };
+static struct S8 init_S8 = { "Hello world!" };
+/* Do not use printf("%s") to avoid undefined behavior in the
+   reference interpreter */
+#define print_S8(x) \
+  { char * p;       \
+    printf("\"");   \
+    for (p = x.a; *p != 0; p++) printf("%c", *p); \
+    printf("\"\n");   \
+  }
+
+/* Alignment 2 */
+
+struct T1 { short a; };
+static struct T1 init_T1 = { 123 };
+#define print_T1(x) printf("{ a = %d }\n", x.a)
+
+struct T2 { short a, b; };
+static struct T2 init_T2 = { 123, 456 };
+#define print_T2(x) printf("{ a = %d, b = %d }\n", x.a, x.b)
+
+struct T3 { short a, b, c; };
+static struct T3 init_T3 = { 123, 456, 789 };
+#define print_T3(x) printf("{ a = %d, b = %d, c = %d }\n", x.a, x.b, x.c)
+
+struct T4 { short a, b, c, d; };
+static struct T4 init_T4 = { 123, 456, 789, -111 };
+#define print_T4(x) \
+  printf("{ a = %d, b = %d, c = %d, d = %d }\n", x.a, x.b, x.c, x.d)
+
+struct T5 { short a, b, c, d; char e; };
+static struct T5 init_T5 = { 123, 456, 789, -999, 'x' };
+#define print_T5(x) \
+  printf("{ a = %d, b = %d, c = %d, d = %d, e = '%c' }\n", \
+         x.a, x.b, x.c, x.d, x.e)
+
+/* Alignment >= 4 */
+
+struct U1 { int a; };
+static struct U1 init_U1 = { 12 };
+#define print_U1(x) printf("{ a = %d }\n", x.a)
+
+struct U2 { int a, b; };
+static struct U2 init_U2 = { 12, -34 };
+#define print_U2(x) printf("{ a = %d, b = %d }\n", x.a, x.b)
+
+struct U3 { int a, b, c; };
+static struct U3 init_U3 = { 12, 34, -56};
+#define print_U3(x) printf("{ a = %d, b = %d, c = %d }\n", x.a, x.b, x.c)
+
+struct U4 { int a, b, c, d; };
+static struct U4 init_U4 = { 12, 34, 56, -78 };
+#define print_U4(x) \
+  printf("{ a = %d, b = %d, c = %d, d = %d }\n", x.a, x.b, x.c, x.d)
+
+struct U5 { int a; char b; };
+static struct U5 init_U5 = { 1234, 'u' };
+#define print_U5(x) \
+  printf("{ a = %d, b = '%c' }\n", x.a, x.b)
+
+struct U6 { int a; short b; };
+static struct U6 init_U6 = { 55555, 666 };
+#define print_U6(x) \
+  printf("{ a = %d, b = %d }\n", x.a, x.b)
+
+struct U7 { int a; short b; char c; };
+static struct U7 init_U7 = { -10001, -789, 'z' };
+#define print_U7(x) \
+  printf("{ a = %d, b = %d, c = '%c' }\n", x.a, x.b, x.c)
+
+struct U8 { char a; int b; };
+static struct U8 init_U8 = { 'x', 12345 };
+#define print_U8(x) \
+  printf("{ a = '%c', b = %d }\n", x.a, x.b)
+
+/* Struct passing */
+
+#define PRINT(name,ty,print) \
+extern void THEM(name) (struct ty x); \
+void US(name) (struct ty x) { print(x); }
+
+PRINT(s1,S1,print_S1)
+PRINT(s2,S2,print_S2)
+PRINT(s3,S3,print_S3)
+PRINT(s4,S4,print_S4)
+PRINT(s5,S5,print_S5)
+PRINT(s6,S6,print_S6)
+PRINT(s7,S7,print_S7)
+PRINT(s8,S8,print_S8)
+PRINT(t1,T1,print_T1)
+PRINT(t2,T2,print_T2)
+PRINT(t3,T3,print_T3)
+PRINT(t4,T4,print_T4)
+PRINT(t5,T5,print_T5)
+PRINT(u1,U1,print_U1)
+PRINT(u2,U2,print_U2)
+PRINT(u3,U3,print_U3)
+PRINT(u4,U4,print_U4)
+PRINT(u5,U5,print_U5)
+PRINT(u6,U6,print_U6)
+PRINT(u7,U7,print_U7)
+PRINT(u8,U8,print_U8)
+
+/* Struct passing with modification in the callee */
+
+extern void THEM (ms4) (struct S4 x);
+void US (ms4) (struct S4 x)
+{
+  x.a += 1; x.d -= 1;
+}
+
+extern void THEM (mu4) (struct U4 x);
+void US (mu4) (struct U4 x)
+{
+  x.a = 1; x.b = 2;
+}
+
+/* Struct return */
+
+#define RETURN(name,ty,init) \
+extern struct ty THEM(name)(void); \
+struct ty US(name)(void) { return init; }
+
+RETURN(rs1,S1,init_S1)
+RETURN(rs2,S2,init_S2)
+RETURN(rs3,S3,init_S3)
+RETURN(rs4,S4,init_S4)
+RETURN(rs5,S5,init_S5)
+RETURN(rs6,S6,init_S6)
+RETURN(rs7,S7,init_S7)
+RETURN(rs8,S8,init_S8)
+RETURN(rt1,T1,init_T1)
+RETURN(rt2,T2,init_T2)
+RETURN(rt3,T3,init_T3)
+RETURN(rt4,T4,init_T4)
+RETURN(rt5,T5,init_T5)
+RETURN(ru1,U1,init_U1)
+RETURN(ru2,U2,init_U2)
+RETURN(ru3,U3,init_U3)
+RETURN(ru4,U4,init_U4)
+RETURN(ru5,U5,init_U5)
+RETURN(ru6,U6,init_U6)
+RETURN(ru7,U7,init_U7)
+RETURN(ru8,U8,init_U8)
+
+/* Test function, calling the functions compiled by the other compiler */
+
+#define CALLPRINT(name,ty,init) \
+  printf(#name": "); THEM(name)(init);
+
+#define CALLRETURN(name,ty,print) \
+  { struct ty x = THEM(name)(); \
+    printf(#name": "); print(x); }
+
+extern void THEM(test) (void);
+void US(test) (void)
+{
+  CALLPRINT(s1,S1,init_S1)
+  CALLPRINT(s2,S2,init_S2)
+  CALLPRINT(s3,S3,init_S3)
+  CALLPRINT(s4,S4,init_S4)
+  CALLPRINT(s5,S5,init_S5)
+  CALLPRINT(s6,S6,init_S6)
+  CALLPRINT(s7,S7,init_S7)
+  CALLPRINT(s8,S8,init_S8)
+  CALLPRINT(t1,T1,init_T1)
+  CALLPRINT(t2,T2,init_T2)
+  CALLPRINT(t3,T3,init_T3)
+  CALLPRINT(t4,T4,init_T4)
+  CALLPRINT(t5,T5,init_T5)
+  CALLPRINT(u1,U1,init_U1)
+  CALLPRINT(u2,U2,init_U2)
+  CALLPRINT(u3,U3,init_U3)
+  CALLPRINT(u4,U4,init_U4)
+  CALLPRINT(u5,U5,init_U5)
+  CALLPRINT(u6,U6,init_U6)
+  CALLPRINT(u7,U7,init_U7)
+  CALLPRINT(u8,U8,init_U8)
+
+  { struct S4 x = { 's', 'a', 'm', 'e' };
+    THEM(ms4)(x);
+    printf("after ms4, x = { '%c', '%c', '%c', '%c' }\n", x.a, x.b, x.c, x.d); }
+  { struct U4 x = { 11, 22, 33, 44 };
+    THEM(mu4)(x);
+    printf("after mu4, x = { a = { %d, %d, %d, %d } }\n", x.a, x.b, x.c, x.d); }
+
+  CALLRETURN(rs1,S1,print_S1)
+  CALLRETURN(rs2,S2,print_S2)
+  CALLRETURN(rs3,S3,print_S3)
+  CALLRETURN(rs4,S4,print_S4)
+  CALLRETURN(rs5,S5,print_S5)
+  CALLRETURN(rs6,S6,print_S6)
+  CALLRETURN(rs7,S7,print_S7)
+  CALLRETURN(rs8,S8,print_S8)
+  CALLRETURN(rt1,T1,print_T1)
+  CALLRETURN(rt2,T2,print_T2)
+  CALLRETURN(rt3,T3,print_T3)
+  CALLRETURN(rt4,T4,print_T4)
+  CALLRETURN(rt5,T5,print_T5)
+  CALLRETURN(ru1,U1,print_U1)
+  CALLRETURN(ru2,U2,print_U2)
+  CALLRETURN(ru3,U3,print_U3)
+  CALLRETURN(ru4,U4,print_U4)
+  CALLRETURN(ru5,U5,print_U5)
+  CALLRETURN(ru6,U6,print_U6)
+  CALLRETURN(ru7,U7,print_U7)
+  CALLRETURN(ru8,U8,print_U8)
+}
+
+#if defined(COMPCERT_SIDE)
+
+int main()
+{
+  printf("--- CompCert calling native:\n");
+  compcert_test();
+  printf("--- native calling CompCert:\n");
+  native_test();
+  return 0;
+}
+
+#elif !defined(CC_SIDE)
+
+int main()
+{
+  printf("--- CompCert calling native:\n");
+  test();
+  printf("--- native calling CompCert:\n");
+  test();
+  return 0;
+}
+
+#endif
+
+