Move /src/test to /tests

tests/auxiliary/rust_test_helpers.c

@@ -0,0 +1,429 @@
+// Helper functions used only in tests
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <stdarg.h>
+
+// These functions are used in the unit tests for C ABI calls.
+
+uint32_t
+rust_dbg_extern_identity_u32(uint32_t u) {
+    return u;
+}
+
+uint64_t
+rust_dbg_extern_identity_u64(uint64_t u) {
+    return u;
+}
+
+double
+rust_dbg_extern_identity_double(double u) {
+    return u;
+}
+
+char
+rust_dbg_extern_identity_u8(char u) {
+    return u;
+}
+
+typedef void *(*dbg_callback)(void*);
+
+void *
+rust_dbg_call(dbg_callback cb, void *data) {
+    return cb(data);
+}
+
+void rust_dbg_do_nothing() { }
+
+struct TwoU8s {
+    uint8_t one;
+    uint8_t two;
+};
+
+struct TwoU8s
+rust_dbg_extern_return_TwoU8s() {
+    struct TwoU8s s;
+    s.one = 10;
+    s.two = 20;
+    return s;
+}
+
+struct TwoU8s
+rust_dbg_extern_identity_TwoU8s(struct TwoU8s u) {
+    return u;
+}
+
+struct TwoU16s {
+    uint16_t one;
+    uint16_t two;
+};
+
+struct TwoU16s
+rust_dbg_extern_return_TwoU16s() {
+    struct TwoU16s s;
+    s.one = 10;
+    s.two = 20;
+    return s;
+}
+
+struct TwoU16s
+rust_dbg_extern_identity_TwoU16s(struct TwoU16s u) {
+    return u;
+}
+
+struct TwoU32s {
+    uint32_t one;
+    uint32_t two;
+};
+
+struct TwoU32s
+rust_dbg_extern_return_TwoU32s() {
+    struct TwoU32s s;
+    s.one = 10;
+    s.two = 20;
+    return s;
+}
+
+struct TwoU32s
+rust_dbg_extern_identity_TwoU32s(struct TwoU32s u) {
+    return u;
+}
+
+struct TwoU64s {
+    uint64_t one;
+    uint64_t two;
+};
+
+struct TwoU64s
+rust_dbg_extern_return_TwoU64s() {
+    struct TwoU64s s;
+    s.one = 10;
+    s.two = 20;
+    return s;
+}
+
+struct TwoU64s
+rust_dbg_extern_identity_TwoU64s(struct TwoU64s u) {
+    return u;
+}
+
+struct TwoDoubles {
+    double one;
+    double two;
+};
+
+struct TwoDoubles
+rust_dbg_extern_identity_TwoDoubles(struct TwoDoubles u) {
+    return u;
+}
+
+struct ManyInts {
+    int8_t arg1;
+    int16_t arg2;
+    int32_t arg3;
+    int16_t arg4;
+    int8_t arg5;
+    struct TwoU8s arg6;
+};
+
+// MSVC doesn't allow empty structs or unions
+#ifndef _MSC_VER
+struct Empty {
+};
+
+void
+rust_dbg_extern_empty_struct(struct ManyInts v1, struct Empty e, struct ManyInts v2) {
+    assert(v1.arg1 == v2.arg1 + 1);
+    assert(v1.arg2 == v2.arg2 + 1);
+    assert(v1.arg3 == v2.arg3 + 1);
+    assert(v1.arg4 == v2.arg4 + 1);
+    assert(v1.arg5 == v2.arg5 + 1);
+    assert(v1.arg6.one == v2.arg6.one + 1);
+    assert(v1.arg6.two == v2.arg6.two + 1);
+}
+#endif
+
+intptr_t
+rust_get_test_int() {
+  return 1;
+}
+
+char *
+rust_get_null_ptr() {
+    return 0;
+}
+
+// Debug helpers strictly to verify ABI conformance.
+
+struct quad {
+    uint64_t a;
+    uint64_t b;
+    uint64_t c;
+    uint64_t d;
+};
+
+struct floats {
+    double a;
+    uint8_t b;
+    double c;
+};
+
+struct char_char_double {
+    uint8_t a;
+    uint8_t b;
+    double c;
+};
+
+struct char_char_float {
+    uint8_t a;
+    uint8_t b;
+    float c;
+};
+
+struct quad
+rust_dbg_abi_1(struct quad q) {
+    struct quad qq = { q.c + 1,
+                       q.d - 1,
+                       q.a + 1,
+                       q.b - 1 };
+    return qq;
+}
+
+struct floats
+rust_dbg_abi_2(struct floats f) {
+    struct floats ff = { f.c + 1.0,
+                         0xff,
+                         f.a - 1.0 };
+    return ff;
+}
+
+struct char_char_double
+rust_dbg_abi_3(struct char_char_double a) {
+    struct char_char_double ccd = { a.a + 1,
+                                    a.b - 1,
+                                    a.c + 1.0 };
+    return ccd;
+}
+
+struct char_char_float
+rust_dbg_abi_4(struct char_char_float a) {
+    struct char_char_float ccd = { a.a + 1,
+                                   a.b - 1,
+                                   a.c + 1.0 };
+    return ccd;
+}
+
+
+int
+rust_dbg_static_mut = 3;
+
+void
+rust_dbg_static_mut_check_four() {
+    assert(rust_dbg_static_mut == 4);
+}
+
+struct S {
+    uint64_t x;
+    uint64_t y;
+    uint64_t z;
+};
+
+uint64_t get_x(struct S s) {
+    return s.x;
+}
+
+uint64_t get_y(struct S s) {
+    return s.y;
+}
+
+uint64_t get_z(struct S s) {
+    return s.z;
+}
+
+uint64_t get_c_many_params(void *a, void *b, void *c, void *d, struct quad f) {
+    return f.c;
+}
+
+struct quad_floats {
+    float a;
+    float b;
+    float c;
+    float d;
+};
+
+float get_c_exhaust_sysv64_ints(
+    void *a,
+    void *b,
+    void *c,
+    void *d,
+    void *e,
+    void *f,
+    // `f` used the last integer register, so `g` goes on the stack.
+    // It also used to bring the "count of available integer registers" down to
+    // `-1` which broke the next SSE-only aggregate argument (`h`) - see #62350.
+    void *g,
+    struct quad_floats h
+) {
+    return h.c;
+}
+
+// Calculates the average of `(x + y) / n` where x: i64, y: f64. There must be exactly n pairs
+// passed as variadic arguments. There are two versions of this function: the
+// variadic one, and the one that takes a `va_list`.
+double rust_valist_interesting_average(uint64_t n, va_list pairs) {
+    double sum = 0.0;
+    int i;
+    for(i = 0; i < n; i += 1) {
+        sum += (double)va_arg(pairs, int64_t);
+        sum += va_arg(pairs, double);
+    }
+    return sum / n;
+}
+
+double rust_interesting_average(uint64_t n, ...) {
+    double sum;
+    va_list pairs;
+    va_start(pairs, n);
+    sum = rust_valist_interesting_average(n, pairs);
+    va_end(pairs);
+    return sum;
+}
+
+int32_t rust_int8_to_int32(int8_t x) {
+    return (int32_t)x;
+}
+
+typedef union LARGE_INTEGER {
+  struct {
+    uint32_t LowPart;
+    uint32_t HighPart;
+  };
+  struct {
+    uint32_t LowPart;
+    uint32_t HighPart;
+  } u;
+  uint64_t QuadPart;
+} LARGE_INTEGER;
+
+LARGE_INTEGER increment_all_parts(LARGE_INTEGER li) {
+    li.LowPart += 1;
+    li.HighPart += 1;
+    li.u.LowPart += 1;
+    li.u.HighPart += 1;
+    li.QuadPart += 1;
+    return li;
+}
+
+#if __SIZEOF_INT128__ == 16
+
+unsigned __int128 identity(unsigned __int128 a) {
+    return a;
+}
+
+__int128 square(__int128 a) {
+    return a * a;
+}
+
+__int128 sub(__int128 a, __int128 b) {
+    return a - b;
+}
+
+#endif
+
+#define OPTION_TAG_NONE (0)
+#define OPTION_TAG_SOME (1)
+
+struct U8TaggedEnumOptionU64 {
+    uint8_t tag;
+    union {
+        uint64_t some;
+    };
+};
+
+struct U8TaggedEnumOptionU64
+rust_dbg_new_some_u64(uint64_t some) {
+    struct U8TaggedEnumOptionU64 r = {
+        .tag = OPTION_TAG_SOME,
+        .some = some,
+    };
+    return r;
+}
+
+struct U8TaggedEnumOptionU64
+rust_dbg_new_none_u64(void) {
+    struct U8TaggedEnumOptionU64 r = {
+        .tag = OPTION_TAG_NONE,
+    };
+    return r;
+}
+
+int32_t
+rust_dbg_unpack_option_u64(struct U8TaggedEnumOptionU64 o, uint64_t *into) {
+    assert(into);
+    switch (o.tag) {
+    case OPTION_TAG_SOME:
+        *into = o.some;
+        return 1;
+    case OPTION_TAG_NONE:
+        return 0;
+    default:
+        assert(0 && "unexpected tag");
+        return 0;
+    }
+}
+
+struct U8TaggedEnumOptionU64U64 {
+    uint8_t tag;
+    union {
+        struct {
+            uint64_t a;
+            uint64_t b;
+        } some;
+    };
+};
+
+struct U8TaggedEnumOptionU64U64
+rust_dbg_new_some_u64u64(uint64_t a, uint64_t b) {
+    struct U8TaggedEnumOptionU64U64 r = {
+        .tag = OPTION_TAG_SOME,
+        .some = { .a = a, .b = b },
+    };
+    return r;
+}
+
+struct U8TaggedEnumOptionU64U64
+rust_dbg_new_none_u64u64(void) {
+    struct U8TaggedEnumOptionU64U64 r = {
+        .tag = OPTION_TAG_NONE,
+    };
+    return r;
+}
+
+int32_t
+rust_dbg_unpack_option_u64u64(struct U8TaggedEnumOptionU64U64 o, uint64_t *a, uint64_t *b) {
+    assert(a);
+    assert(b);
+    switch (o.tag) {
+    case OPTION_TAG_SOME:
+        *a = o.some.a;
+        *b = o.some.b;
+        return 1;
+    case OPTION_TAG_NONE:
+        return 0;
+    default:
+        assert(0 && "unexpected tag");
+        return 0;
+    }
+}
+
+uint16_t issue_97463_leak_uninit_data(uint32_t a, uint32_t b, uint32_t c) {
+    struct bloc { uint16_t a; uint16_t b; uint16_t c; };
+    struct bloc *data = malloc(sizeof(struct bloc));
+
+    data->a = a & 0xFFFF;
+    data->b = b & 0xFFFF;
+    data->c = c & 0xFFFF;
+
+    return data->b; /* leak data */
+}