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aarch64: Add support for Go closures

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This commit is contained in:
Richard Henderson
2014-11-12 09:29:32 +01:00
committed by Richard Henderson
parent 0e41c73b09
commit c6352b664c
3 changed files with 112 additions and 6 deletions
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src/aarch64/ffi.c
+47 -5
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@@ -539,13 +539,14 @@ ffi_status ffi_prep_cif_machdep_var(ffi_cif *cif,
#endif /* __APPLE__ */
extern void ffi_call_SYSV (struct call_context *context, void *frame,
void (*fn)(void), void *rvalue, int flags)
FFI_HIDDEN;
void (*fn)(void), void *rvalue, int flags,
void *closure) FFI_HIDDEN;
/* Call a function with the provided arguments and capture the return
value. */
void
ffi_call (ffi_cif *cif, void (*fn)(void), void *orig_rvalue, void **avalue)
static void
ffi_call_int (ffi_cif *cif, void (*fn)(void), void *orig_rvalue,
void **avalue, void *closure)
{
struct call_context *context;
void *stack, *frame, *rvalue;
@@ -698,12 +699,27 @@ ffi_call (ffi_cif *cif, void (*fn)(void), void *orig_rvalue, void **avalue)
#endif
}
ffi_call_SYSV (context, frame, fn, rvalue, flags);
ffi_call_SYSV (context, frame, fn, rvalue, flags, closure);
if (flags & AARCH64_RET_NEED_COPY)
memcpy (orig_rvalue, rvalue, rtype_size);
}
void
ffi_call (ffi_cif *cif, void (*fn) (void), void *rvalue, void **avalue)
{
ffi_call_int (cif, fn, rvalue, avalue, NULL);
}
#ifdef FFI_GO_CLOSURES
void
ffi_call_go (ffi_cif *cif, void (*fn) (void), void *rvalue,
void **avalue, void *closure)
{
ffi_call_int (cif, fn, rvalue, avalue, closure);
}
#endif /* FFI_GO_CLOSURES */
/* Build a trampoline. */
extern void ffi_closure_SYSV (void) FFI_HIDDEN;
@@ -744,6 +760,32 @@ ffi_prep_closure_loc (ffi_closure *closure,
return FFI_OK;
}
#ifdef FFI_GO_CLOSURES
extern void ffi_go_closure_SYSV (void) FFI_HIDDEN;
extern void ffi_go_closure_SYSV_V (void) FFI_HIDDEN;
ffi_status
ffi_prep_go_closure (ffi_go_closure *closure, ffi_cif* cif,
void (*fun)(ffi_cif*,void*,void**,void*))
{
void (*start)(void);
if (cif->abi != FFI_SYSV)
return FFI_BAD_ABI;
if (cif->flags & AARCH64_FLAG_ARG_V)
start = ffi_go_closure_SYSV_V;
else
start = ffi_go_closure_SYSV;
closure->tramp = start;
closure->cif = cif;
closure->fun = fun;
return FFI_OK;
}
#endif /* FFI_GO_CLOSURES */
/* Primary handler to setup and invoke a function within a closure.
A closure when invoked enters via the assembler wrapper