* Fix PART of issue 17192 for 3.4 - reapply the issue11729 patch
that was undone in the merge fun from upstream which already had it in 3.0.13. * Add the missing update to libffi.info.
This commit is contained in:
Gregory P. Smith
commit
6897267759
|
|
@ -14505,10 +14505,10 @@ if ${libffi_cv_as_x86_pcrel+:} false; then :
|
|||
$as_echo_n "(cached) " >&6
|
||||
else
|
||||
|
||||
libffi_cv_as_x86_pcrel=yes
|
||||
libffi_cv_as_x86_pcrel=no
|
||||
echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
|
||||
if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
|
||||
libffi_cv_as_x86_pcrel=no
|
||||
if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
|
||||
libffi_cv_as_x86_pcrel=yes
|
||||
fi
|
||||
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -367,10 +367,10 @@ fi
|
|||
if test x$TARGET = xX86 || test x$TARGET = xX86_WIN32 || test x$TARGET = xX86_64; then
|
||||
AC_CACHE_CHECK([assembler supports pc related relocs],
|
||||
libffi_cv_as_x86_pcrel, [
|
||||
libffi_cv_as_x86_pcrel=yes
|
||||
libffi_cv_as_x86_pcrel=no
|
||||
echo '.text; foo: nop; .data; .long foo-.; .text' > conftest.s
|
||||
if $CC $CFLAGS -c conftest.s 2>&1 | grep -i warning > /dev/null; then
|
||||
libffi_cv_as_x86_pcrel=no
|
||||
if $CC $CFLAGS -c conftest.s > /dev/null 2>&1; then
|
||||
libffi_cv_as_x86_pcrel=yes
|
||||
fi
|
||||
])
|
||||
if test "x$libffi_cv_as_x86_pcrel" = xyes; then
|
||||
|
|
|
|||
|
|
@ -4,7 +4,7 @@ from ../libffi/doc/libffi.texi.
|
|||
This manual is for Libffi, a portable foreign-function interface
|
||||
library.
|
||||
|
||||
Copyright (C) 2008, 2010 Red Hat, Inc.
|
||||
Copyright (C) 2008, 2010, 2011 Red Hat, Inc.
|
||||
|
||||
Permission is granted to copy, distribute and/or modify this
|
||||
document under the terms of the GNU General Public License as
|
||||
|
|
@ -27,7 +27,7 @@ libffi
|
|||
This manual is for Libffi, a portable foreign-function interface
|
||||
library.
|
||||
|
||||
Copyright (C) 2008, 2010 Red Hat, Inc.
|
||||
Copyright (C) 2008, 2010, 2011 Red Hat, Inc.
|
||||
|
||||
Permission is granted to copy, distribute and/or modify this
|
||||
document under the terms of the GNU General Public License as
|
||||
|
|
@ -115,8 +115,6 @@ To prepare a call interface object, use the function `ffi_prep_cif'.
|
|||
want. *note Multiple ABIs:: for more information.
|
||||
|
||||
NARGS is the number of arguments that this function accepts.
|
||||
`libffi' does not yet handle varargs functions; see *note Missing
|
||||
Features:: for more information.
|
||||
|
||||
RTYPE is a pointer to an `ffi_type' structure that describes the
|
||||
return type of the function. *Note Types::.
|
||||
|
|
@ -129,6 +127,30 @@ To prepare a call interface object, use the function `ffi_prep_cif'.
|
|||
properly; `FFI_BAD_TYPEDEF' if one of the `ffi_type' objects is
|
||||
incorrect; or `FFI_BAD_ABI' if the ABI parameter is invalid.
|
||||
|
||||
If the function being called is variadic (varargs) then
|
||||
`ffi_prep_cif_var' must be used instead of `ffi_prep_cif'.
|
||||
|
||||
-- Function: ffi_status ffi_prep_cif_var (ffi_cif *CIF, ffi_abi
|
||||
varabi, unsigned int NFIXEDARGS, unsigned int varntotalargs,
|
||||
ffi_type *RTYPE, ffi_type **ARGTYPES)
|
||||
This initializes CIF according to the given parameters for a call
|
||||
to a variadic function. In general it's operation is the same as
|
||||
for `ffi_prep_cif' except that:
|
||||
|
||||
NFIXEDARGS is the number of fixed arguments, prior to any variadic
|
||||
arguments. It must be greater than zero.
|
||||
|
||||
NTOTALARGS the total number of arguments, including variadic and
|
||||
fixed arguments.
|
||||
|
||||
Note that, different cif's must be prepped for calls to the same
|
||||
function when different numbers of arguments are passed.
|
||||
|
||||
Also note that a call to `ffi_prep_cif_var' with
|
||||
NFIXEDARGS=NOTOTALARGS is NOT equivalent to a call to
|
||||
`ffi_prep_cif'.
|
||||
|
||||
|
||||
To call a function using an initialized `ffi_cif', use the
|
||||
`ffi_call' function:
|
||||
|
||||
|
|
@ -147,7 +169,9 @@ To prepare a call interface object, use the function `ffi_prep_cif'.
|
|||
AVALUES is a vector of `void *' pointers that point to the memory
|
||||
locations holding the argument values for a call. If CIF declares
|
||||
that the function has no arguments (i.e., NARGS was 0), then
|
||||
AVALUES is ignored.
|
||||
AVALUES is ignored. Note that argument values may be modified by
|
||||
the callee (for instance, structs passed by value); the burden of
|
||||
copying pass-by-value arguments is placed on the caller.
|
||||
|
||||
|
||||
File: libffi.info, Node: Simple Example, Next: Types, Prev: The Basics, Up: Using libffi
|
||||
|
|
@ -294,7 +318,7 @@ is perfectly happy passing structures back and forth. You must first
|
|||
describe the structure to `libffi' by creating a new `ffi_type' object
|
||||
for it.
|
||||
|
||||
-- ffi_type:
|
||||
-- Data type: ffi_type
|
||||
The `ffi_type' has the following members:
|
||||
`size_t size'
|
||||
This is set by `libffi'; you should initialize it to zero.
|
||||
|
|
@ -509,9 +533,7 @@ File: libffi.info, Node: Missing Features, Next: Index, Prev: Using libffi,
|
|||
`libffi' is missing a few features. We welcome patches to add support
|
||||
for these.
|
||||
|
||||
* There is no support for calling varargs functions. This may work
|
||||
on some platforms, depending on how the ABI is defined, but it is
|
||||
not reliable.
|
||||
* Variadic closures.
|
||||
|
||||
* There is no support for bit fields in structures.
|
||||
|
||||
|
|
@ -519,6 +541,9 @@ for these.
|
|||
|
||||
* The "raw" API is undocumented.
|
||||
|
||||
Note that variadic support is very new and tested on a relatively
|
||||
small number of platforms.
|
||||
|
||||
|
||||
File: libffi.info, Node: Index, Prev: Missing Features, Up: Top
|
||||
|
||||
|
|
@ -528,7 +553,6 @@ Index
|
|||
[index ]
|
||||
* Menu:
|
||||
|
||||
* : Structures. (line 12)
|
||||
* ABI: Introduction. (line 13)
|
||||
* Application Binary Interface: Introduction. (line 13)
|
||||
* calling convention: Introduction. (line 13)
|
||||
|
|
@ -536,11 +560,12 @@ Index
|
|||
* closure API: The Closure API. (line 13)
|
||||
* closures: The Closure API. (line 13)
|
||||
* FFI: Introduction. (line 31)
|
||||
* ffi_call: The Basics. (line 41)
|
||||
* ffi_closure_alloca: The Closure API. (line 19)
|
||||
* ffi_call: The Basics. (line 63)
|
||||
* ffi_closure_alloc: The Closure API. (line 19)
|
||||
* ffi_closure_free: The Closure API. (line 26)
|
||||
* FFI_CLOSURES: The Closure API. (line 13)
|
||||
* ffi_prep_cif: The Basics. (line 16)
|
||||
* ffi_prep_cif_var: The Basics. (line 39)
|
||||
* ffi_prep_closure_loc: The Closure API. (line 34)
|
||||
* ffi_status <1>: The Closure API. (line 37)
|
||||
* ffi_status: The Basics. (line 18)
|
||||
|
|
@ -568,24 +593,24 @@ Index
|
|||
* ffi_type_void: Primitive Types. (line 10)
|
||||
* Foreign Function Interface: Introduction. (line 31)
|
||||
* void <1>: The Closure API. (line 20)
|
||||
* void: The Basics. (line 43)
|
||||
* void: The Basics. (line 65)
|
||||
|
||||
|
||||
|
||||
Tag Table:
|
||||
Node: Top706
|
||||
Node: Introduction1448
|
||||
Node: Using libffi3084
|
||||
Node: The Basics3570
|
||||
Node: Simple Example6177
|
||||
Node: Types7204
|
||||
Node: Primitive Types7487
|
||||
Node: Structures9307
|
||||
Node: Type Example10167
|
||||
Node: Multiple ABIs11390
|
||||
Node: The Closure API11761
|
||||
Node: Closure Example14705
|
||||
Node: Missing Features16264
|
||||
Node: Index16757
|
||||
Node: Top712
|
||||
Node: Introduction1460
|
||||
Node: Using libffi3096
|
||||
Node: The Basics3582
|
||||
Node: Simple Example7224
|
||||
Node: Types8251
|
||||
Node: Primitive Types8534
|
||||
Node: Structures10354
|
||||
Node: Type Example11224
|
||||
Node: Multiple ABIs12447
|
||||
Node: The Closure API12818
|
||||
Node: Closure Example15762
|
||||
Node: Missing Features17321
|
||||
Node: Index17774
|
||||
|
||||
End Tag Table
|
||||
|
|
|
|||
Loading…
Reference in New Issue