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src/libandroid/looper.c: make the ffi saner

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This commit is contained in:
Mis012
2023-01-12 13:14:02 +01:00
parent 34858d2fa6
commit 184a1916ad
1 changed files with 31 additions and 36 deletions
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67
src/libandroid/looper.c
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@@ -4,50 +4,45 @@
typedef void ALooper;
typedef int (*Looper_callbackFunc)(int fd, int events, void* data);
/* macros for creating wrappers for methods which use C++ itanium ABI */
/* helpers for creating wrappers for methods which use C++ itanium ABI */
#ifdef __aarch64__
#define ITANIUM_OBJ_RET_WRAPPER_DEC(ret_type, wrapper_name, mangled_name, ...) \
void mangled_name(__VA_ARGS__); /* r8 used instead of implicit parameter, fun innit */\
ret_type * wrapper_name(__VA_ARGS__)
#define ITANIUM_OBJ_RET_WRAPPER_BODY(ret_type, wrapper_name, mangled_name, ...) \
{ \
ret_type *ret; \
register ret_type **addr_of_ret asm("r8"); /* arm wants to be special :( */\
__asm__ ("" : : "" (addr_of_ret)); /* apparently __attribute__((used)) is not a thing */\
addr_of_ret = &ret; \
mangled_name(__VA_ARGS__); \
return ret; \
}
#define ITANIUM_OBJRETCALL_DEC(ret_type, mangled_name, ...) \
void mangled_name(__VA_ARGS__); /* r8 used instead of implicit parameter, fun innit */
#else
#define ITANIUM_OBJ_RET_WRAPPER_DEC(ret_type, wrapper_name, mangled_name, ...) \
void mangled_name(ret_type **ret, ##__VA_ARGS__); /* implicit first parameter used for return value */\
ret_type * wrapper_name(__VA_ARGS__)
#define ITANIUM_OBJ_RET_WRAPPER_BODY(ret_type, wrapper_name, mangled_name, ...) \
{ \
ret_type *ret; \
mangled_name(&ret, ##__VA_ARGS__); \
return ret; \
}
#define ITANIUM_OBJRETCALL_DEC(ret_type, mangled_name, ...) \
void mangled_name(ret_type **ret, ##__VA_ARGS__) /* implicit first parameter used for return value */
#endif
#define ITANIUM_OBJ_RET_WRAPPER_NOARGS(ret_type, wrapper_name, mangled_name) \
ITANIUM_OBJ_RET_WRAPPER_DEC(ret_type, wrapper_name, mangled_name) \
ITANIUM_OBJ_RET_WRAPPER_BODY(ret_type, wrapper_name, mangled_name)
inline __attribute__((__always_inline__)) void * itanium_objretcall(void (*func)(), ...)
{
#ifdef __aarch64__
void *ret;
register void **addr_of_ret asm("r8"); /* arm wants to be special :( */
__asm__ ("" : : "" (addr_of_ret)); /* apparently __attribute__((used)) is not a thing */
addr_of_ret = &ret;
func(__builtin_va_arg_pack());
return ret;
#else
void *ret;
func(&ret, __builtin_va_arg_pack());
return ret;
#endif
}
// ALooper * ALooper_forThread()
ITANIUM_OBJ_RET_WRAPPER_NOARGS(ALooper, ALooper_forThread, _ZN7android6Looper12getForThreadEv)
/* --- */
// ALooper * ALooper_prepare(int opts)
ITANIUM_OBJ_RET_WRAPPER_DEC(ALooper, ALooper_prepare, _ZN7android6Looper7prepareEi, int opts)
ITANIUM_OBJ_RET_WRAPPER_BODY(ALooper, ALooper_prepare, _ZN7android6Looper7prepareEi, opts)
ITANIUM_OBJRETCALL_DEC(ALooper, _ZN7android6Looper12getForThreadEv);
ALooper * ALooper_forThread(void)
{
return itanium_objretcall(_ZN7android6Looper12getForThreadEv);
}
ITANIUM_OBJRETCALL_DEC(ALooper, _ZN7android6Looper7prepareEi, int opts);
ALooper * ALooper_prepare(int opts)
{
return itanium_objretcall(_ZN7android6Looper7prepareEi, opts);
}
void _ZNK7android7RefBase9incStrongEPKv(ALooper *this, void *unused);
void ALooper_acquire(ALooper* looper) {