* libguile/foreign.c (OBJCODE_HEADER, META_HEADER, META): Change these
into higher-order macros.
(GEN_CODE): New higher-order macro based on 'CODE'.
(M_STATIC, M_DYNAMIC): New macros.
(CODE): Reimplement using 'GEN_CODE' and 'M_STATIC'.
(make_objcode_trampoline): New static function.
(large_objcode_trampolines, large_objcode_trampolines_mutex): New
static variables.
(get_objcode_trampoline): New static function.
(cif_to_procedure): Use 'get_objcode_trampoline'.
* test-suite/standalone/test-ffi-lib.c (test_ffi_sum_many):
New function.
* test-suite/standalone/test-ffi: Add test.
Fixes <http://bugs.gnu.org/11468>.
* libguile/ports.c (scm_conversion_strategy): Remove.
(default_conversion_strategy_var, sym_error, sym_substitute,
sym_escape): New variables.
(scm_i_get_conversion_strategy, scm_i_set_conversion_strategy_x):
Remove.
(scm_i_default_port_conversion_handler,
scm_i_set_default_port_conversion_handler): New functions.
(scm_port_conversion_strategy): Use
`scm_i_default_port_conversion_handler' when PORT is #f.
(scm_set_port_conversion_strategy_x): Use SYM_ERROR, SYM_SUBSTITUTE,
and SYM_ESCAPE. Use `scm_i_set_default_port_conversion_handler' when
PORT is #f.
(scm_init_ports): Initialize DEFAULT_CONVERSION_STRATEGY_VAR.
* libguile/ports.h: Update declarations accordingly.
* libguile/foreign.c: Change
`scm_i_get_conversion_strategy (SCM_BOOL_F)' to
`scm_i_default_port_conversion_handler ()'.
* libguile/strings.c: Likewise.
* test-suite/tests/ports.test ("%default-port-conversion-strategy"): New
test prefix.
* test-suite/tests/foreign.test ("pointer<->string")["%default-port-conversion-strategy
is error", "%default-port-conversion-strategy is soft"]: New tests.
* test-suite/test-suite/lib.scm (exception:encoding-error): Allow the
regexp to match `scm_to_stringn' error messages.
* doc/ref/api-io.texi (Ports): Document `%default-port-conversion-strategy'.
This is a followup to 690a0112e5 ("Remove
the "has finalizer?" bit from pointer objects.")
* libguile/foreign.c (scm_set_pointer_finalizer_x): Leave the type cell
unchanged. Before, `equal?' would break on pointers on which
`set-pointer-finalizer!' had been called.
* test-suite/tests/foreign.test ("make-pointer")["equal? modulo
finalizer (set-pointer-finalizer!)"]: New test.
* libguile/foreign.c: Use `alignof_type' instead of `alignof'; the
latter was removed from Gnulib's <alignof.h> in
408e170e3ae81f73fb65686c5834693d89a96594 (Nov. 1 2011).
* libguile/vm-i-scheme.c: Likewise.
* libguile/foreign.c (scm_procedure_to_pointer): Keep a weak reference
to PROC.
* test-suite/tests/foreign.test ("procedure->pointer")["procedure is
retained"]: New test.
* libguile/foreign.c (scm_procedure_to_pointer): Keep a weak reference
to CIF so that it is not reclaimed before POINTER. Before that it
could be reclaimed and typically reused to store the CIF of another
procedure with the same arity, leading to obscure wrong-type-arg
errors.
* libguile/foreign.c (pack): Add `return_value_p' parameter. Update
callers.
When RETURN_VALUE_P is true, assume LOC points to an `ffi_arg', and
cast its results to the relevant type. This fixes packing of integer
return values smaller than `int' on SPARC64 and PowerPC64. Reported
by Nelson H. F. Beebe <beebe@math.utah.edu>.
* test-suite/tests/foreign.test ("pointer<->string"): Add test cases.
* libguile/foreign.c (scm_string_to_pointer, scm_pointer_to_string): Add
optional encoding, and in the pointer->string case, length arguments.
* libguile/foreign.h: Update prototypes of internal functions.
Shouldn't affect ABI as they are internal.
* doc/ref/api-foreign.texi (Void Pointers and Byte Access): Update
docs.
* libguile/foreign.c (scm_pointer_to_scm, scm_scm_to_pointer): New
functions, useful to pass and receive SCM values to and from foreign
functions.
* module/system/foreign.scm: Export the new functions.
* doc/ref/api-foreign.texi (Foreign Variables): Add docs.
* test-suite/tests/foreign.test ("pointer<->scm"): Tests.
* libguile/foreign.c (unpack): Make sure X is a pointer before using
`SCM_POINTER_VALUE'.
* test-suite/tests/foreign.test ("pointer->procedure"): New test prefix.
* libguile/foreign.h (SCM_POINTER_HAS_FINALIZER): Remove.
* libguile/foreign.c (scm_from_pointer): Store nothing more than
`scm_tc7_pointer' in the type slot.
* libguile/objcodes.h (SCM_OBJCODE_TYPE_MMAP)
(SCM_OBJCODE_TYPE_BYTEVECTOR, SCM_OBJCODE_TYPE_SLICE)
(SCM_OBJCODE_TYPE_STATIC): Enumerate objcode types instead of
expressing them as flags.
(SCM_OBJCODE_TYPE): Type is held in bits 8-15.
(SCM_OBJCODE_FLAGS): Flags are now shifted by 16 bits, not 8.
(SCM_MAKE_OBJCODE_TAG): New helper.
* libguile/continuations.c (STATIC_OBJCODE_TAG):
* libguile/control.c (STATIC_OBJCODE_TAG):
* libguile/foreign.c (STATIC_OBJCODE_TAG):
* libguile/gsubr.c (STATIC_OBJCODE_TAG):
* libguile/smob.c (STATIC_OBJCODE_TAG):
* libguile/objcodes.c (make_objcode_by_mmap, scm_c_make_objcode_slice)
(scm_bytecode_to_objcode): : Use SCM_MAKE_OBJCODE_TAG.
* libguile/gc-malloc.c: Add a note that the gc-malloc does not clear the
memory block, so users need to make sure it is initialized.
* libguile/bitvectors.c (scm_c_make_bitvector):
* libguile/bytevectors.c (scm_make_bytevector):
* libguile/strings.c (scm_c_make_string): If no initializer is given,
initialize the bytes to 0. Prevents information leakage if an app uses
make-string et al without initializers.
* libguile/foreign.c (make_cif): Initialize this too, to prevent leakage
in the struct holes. Paranoia...
* libguile/foreign.c (make_cif): New procedure, with code formerly in
`scm_make_foreign_function'.
(scm_make_foreign_function): Use it.
(invoke_closure, scm_procedure_to_pointer)[FFI_CLOSURES]: New
functions.
* libguile/foreign.h (scm_procedure_to_pointer): New declaration.
* module/system/foreign.scm: Export `procedure->pointer' when available.
* test-suite/standalone/test-ffi (f-callback-1, f-callback-2): New
procedures and related tests.
* test-suite/standalone/test-ffi-lib.c (test_ffi_callback_1,
test_ffi_callback_2): New functions.
* test-suite/tests/foreign.test ("procedure->pointer"): New test prefix.
* doc/ref/api-foreign.texi (Dynamic FFI): Document `procedure->pointer'.
* libguile/foreign.c (scm_string_to_pointer, scm_pointer_to_string): New
functions.
* libguile/foreign.h (scm_string_to_pointer, scm_pointer_to_string): New
declarations.
* module/system/foreign.scm: Export `string->pointer' and
`pointer->string'.
* test-suite/tests/foreign.test ("pointer<->string"): New test prefix.
* doc/ref/api-foreign.texi (Void Pointers and Byte Access): Add
`string->pointer' and `pointer->string'.
* libguile/foreign.c (scm_i_pointer_print): Print in hexadecimal.
* doc/ref/api-foreign.texi (Modules and Extensions): Update for
"extensiondir", and a discussion of Guile versions.
(Foreign Variables): Fix discussion of types.
(Void Pointers and Byte Access): Fix typo.
* doc/ref/api-foreign.texi (Foreign Types): Remove bits about typed
foreign pointers. Add `void'.
(Foreign Variables): Update the doc of `dynamic-pointer' and the
`numptob' example. Remove `foreign-set!' and `foreign-ref'. Add
`pointer-address', `make-pointer', `%null-pointer', and
`null-pointer?'
(Void Pointers and Byte Access): Make it clear that wrapped pointers
are untyped. Remove `void' from here. Replace `foreign->bytevector'
and `bytevector->foreign' by `pointer->bytevector' and
`bytevector->pointer'. Add `dereference-pointer' and the rest of the
`numptob' example.
(Dynamic FFI): Update examples. Remove `%null-pointer' from here.
* libguile/dynl.c (scm_dynamic_pointer): Update docstring.
* libguile/foreign.c (scm_dereference_pointer,
scm_pointer_to_bytevector): Likewise.
* module/system/foreign.scm (null-pointer?): Add docstring.
* libguile/foreign.c (scm_make_pointer): Always call out to
`scm_from_pointer'.
(scm_from_pointer): Return NULL_POINTER when PTR and FINALIZER are
NULL.
* libguile/foreign.c (scm_i_foreign_call): Fix the computation of
ARG_SIZE wrt. alignment. Arrange so that the address ARGS[i] is
aligned, rather than checking whether OFF is aligned. Have the RVALUE
be at least word-aligned, which fixes calls to `char'-returning
functions on `armv5tel-*-linux-gnueabi'.
* libguile/foreign.c (sym_null_pointer_error): New variable.
(null_pointer_error): New function.
(scm_foreign_set_x): Raise an error if attempting to modify
NULL_POINTER.
(scm_foreign_to_bytevector): Use `null_pointer_error ()' instead of
`scm_misc_error ()'.
* test-suite/tests/foreign.test: New file.
* test-suite/Makefile.am (SCM_TESTS): Add tests/foreign.test.
* test-suite/lib.scm (exception:null-pointer-error): New variable.
* libguile/foreign.c (scm_take_foreign_pointer): Allocate RET in
GC-scanned memory. This fixes a bug where the object pointed to by
SCM_CIF in the pair returned by `cif_to_procedure ()' would be
reclaimed (as a consequence of commit
087aa6aa31).
* libguile/foreign.c (sym_null, null_pointer): New variables.
(scm_foreign_to_bytevector): Raise an error when PTR is NULL.
(scm_init_foreign): Define SYM_NULL.
* module/system/foreign.scm (%null-pointer): New exported binding.
* libguile/foreign.c (scm_make_foreign_function): Use
`scm_gc_malloc_pointerless ()' when allocating memory for CIF.
(pack): Likewise for the `FFI_TYPE_STRUCT' case.
