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rustc: Use an out pointer to return structs in x86 C ABI. #5347

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This Adds a bunch of tests for passing and returning structs
of various sizes to C. It fixes the struct return rules on unix,
and on windows for structs of size > 8 bytes. Struct passing
on unix for structs under a certain size appears to still be broken.
This commit is contained in:
Brian Anderson 2013-04-01 17:47:38 -07:00
parent 7cd681684f
commit a5ddc00982
19 changed files with 397 additions and 91 deletions
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102
src/rt/rust_test_helpers.cpp
View file

@ -30,26 +30,6 @@ rust_dbg_extern_identity_u64(uint64_t u) {
return u;
}
struct TwoU64s {
uint64_t one;
uint64_t two;
};
extern "C" CDECL TwoU64s
rust_dbg_extern_identity_TwoU64s(TwoU64s u) {
return u;
}
struct TwoDoubles {
double one;
double two;
};
extern "C" CDECL TwoDoubles
rust_dbg_extern_identity_TwoDoubles(TwoDoubles u) {
return u;
}
extern "C" CDECL double
rust_dbg_extern_identity_double(double u) {
return u;
@ -103,3 +83,85 @@ rust_dbg_call(dbg_callback cb, void *data) {
}
extern "C" CDECL void rust_dbg_do_nothing() { }
struct TwoU8s {
uint8_t one;
uint8_t two;
};
extern "C" CDECL TwoU8s
rust_dbg_extern_return_TwoU8s() {
struct TwoU8s s;
s.one = 10;
s.two = 20;
return s;
}
extern "C" CDECL TwoU8s
rust_dbg_extern_identity_TwoU8s(TwoU8s u) {
return u;
}
struct TwoU16s {
uint16_t one;
uint16_t two;
};
extern "C" CDECL TwoU16s
rust_dbg_extern_return_TwoU16s() {
struct TwoU16s s;
s.one = 10;
s.two = 20;
return s;
}
extern "C" CDECL TwoU16s
rust_dbg_extern_identity_TwoU16s(TwoU16s u) {
return u;
}
struct TwoU32s {
uint32_t one;
uint32_t two;
};
extern "C" CDECL TwoU32s
rust_dbg_extern_return_TwoU32s() {
struct TwoU32s s;
s.one = 10;
s.two = 20;
return s;
}
extern "C" CDECL TwoU32s
rust_dbg_extern_identity_TwoU32s(TwoU32s u) {
return u;
}
struct TwoU64s {
uint64_t one;
uint64_t two;
};
extern "C" CDECL TwoU64s
rust_dbg_extern_return_TwoU64s() {
struct TwoU64s s;
s.one = 10;
s.two = 20;
return s;
}
extern "C" CDECL TwoU64s
rust_dbg_extern_identity_TwoU64s(TwoU64s u) {
return u;
}
struct TwoDoubles {
double one;
double two;
};
extern "C" CDECL TwoDoubles
rust_dbg_extern_identity_TwoDoubles(TwoDoubles u) {
return u;
}