diff options
Diffstat (limited to 'src/x86/ffi64.c')
| -rw-r--r-- | src/x86/ffi64.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/x86/ffi64.c b/src/x86/ffi64.c index 438b374..74a3003 100644 --- a/src/x86/ffi64.c +++ b/src/x86/ffi64.c @@ -1,5 +1,5 @@ /* ----------------------------------------------------------------------- - ffi64.c - Copyright (c) 2011, 2018 Anthony Green + ffi64.c - Copyright (c) 2011, 2018, 2022 Anthony Green Copyright (c) 2013 The Written Word, Inc. Copyright (c) 2008, 2010 Red Hat, Inc. Copyright (c) 2002, 2007 Bo Thorsen <bo@suse.de> @@ -681,6 +681,23 @@ ffi_call_efi64(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue); void ffi_call (ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) { + ffi_type **arg_types = cif->arg_types; + int i, nargs = cif->nargs; + + /* If we have any large structure arguments, make a copy so we are passing + by value. */ + for (i = 0; i < nargs; i++) + { + ffi_type *at = arg_types[i]; + int size = at->size; + if (at->type == FFI_TYPE_STRUCT && size > 16) + { + char *argcopy = alloca (size); + memcpy (argcopy, avalue[i], size); + avalue[i] = argcopy; + } + } + #ifndef __ILP32__ if (cif->abi == FFI_EFI64 || cif->abi == FFI_GNUW64) { |