ObjFW  Diff

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_start()
{
	return -1;
}

struct ObjFWRTBase {
	struct Library library;
	BPTR seg_list;
	void *seg_list;
	bool initialized;
};

extern uintptr_t __CTOR_LIST__[], __DTOR_LIST__[];
extern const void *_EH_FRAME_BEGINS__;
extern void *_EH_FRAME_OBJECTS__;

struct ExecBase *SysBase;
#ifdef OF_MORPHOS
const ULONG __abox__ = 1;
#endif
struct WBStartup *_WBenchMsg;
struct objc_libc *libc;
FILE *stdout;
FILE *stderr;
extern uintptr_t __CTOR_LIST__[];
extern uintptr_t __DTOR_LIST__[];

static struct Library *
lib_init(struct ExecBase *exec_base OBJC_M68K_REG("a6"),
    BPTR seg_list OBJC_M68K_REG("a0"),
    void *seg_list OBJC_M68K_REG("a0"),
    struct ObjFWRTBase *base OBJC_M68K_REG("d0"))
{
	SysBase = exec_base;

	base->seg_list = seg_list;

	return &base->library;
}

static struct Library *
OBJC_M68K_FUNC(lib_open, struct ObjFWRTBase *base OBJC_M68K_REG("a6"))
{
	OBJC_M68K_ARG(struct ObjFWRTBase *, base, REG_A6)

	base->library.lib_OpenCnt++;
	base->library.lib_Flags &= ~LIBF_DELEXP;

	return &base->library;
}

static BPTR
static void *
expunge(struct ObjFWRTBase *base)
{
	BPTR seg_list;
	void *seg_list;

	if (base->library.lib_OpenCnt > 0) {
		base->library.lib_Flags |= LIBF_DELEXP;
		return 0;
	}

	seg_list = base->seg_list;

	Remove(&base->library.lib_Node);
	FreeMem((char *)base - base->library.lib_NegSize,
	    base->library.lib_NegSize + base->library.lib_PosSize);

	return seg_list;
}

static BPTR
static void *
OBJC_M68K_FUNC(lib_expunge, struct ObjFWRTBase *base OBJC_M68K_REG("a6"))
{
	OBJC_M68K_ARG(struct ObjFWRTBase *, base, REG_A6)

	return expunge(base);
}

static BPTR
static void *
OBJC_M68K_FUNC(lib_close, struct ObjFWRTBase *base OBJC_M68K_REG("a6"))
{
	OBJC_M68K_ARG(struct ObjFWRTBase *, base, REG_A6)

	if (base->initialized &&
	    (size_t)_EH_FRAME_BEGINS__ == (size_t)_EH_FRAME_OBJECTS__)
		for (size_t i = 1; i <= (size_t)_EH_FRAME_BEGINS__; i++)
			libc->__deregister_frame_info((&_EH_FRAME_BEGINS__)[i]);

	if (--base->library.lib_OpenCnt == 0 &&
	    (base->library.lib_Flags & LIBF_DELEXP))
		return expunge(base);

	if (base->initialized) {
		for (uintptr_t *iter = &__DTOR_LIST__[1]; *iter != 0; iter++) {
			void (*dtor)(void) = (void (*)(void))*iter++;
			dtor();
		}
	}

	return 0;
}

static BPTR
static void *
lib_null(void)
{
	return 0;
}

static void
objc_init(struct ObjFWRTBase *base OBJC_M68K_REG("a6"),
    struct objc_libc *libc_ OBJC_M68K_REG("a0"))
{
	uintptr_t *iter, *iter0;

	libc = libc_;

	stdout = libc->stdout_;
	stderr = libc->stderr_;

	if ((size_t)_EH_FRAME_BEGINS__ == (size_t)_EH_FRAME_OBJECTS__)
		for (size_t i = 1; i <= (size_t)_EH_FRAME_BEGINS__; i++)
			libc->__register_frame_info((&_EH_FRAME_BEGINS__)[i],
			    (&_EH_FRAME_OBJECTS__)[i]);

	iter0 = &__CTOR_LIST__[1];
	for (iter = iter0; *iter != 0; iter++);

	while (iter > iter0) {
		void (*ctor)(void) = (void (*)(void))*--iter;
		ctor();
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}

void
abort(void)
{
	libc->abort();
}

int
_Unwind_RaiseException(void *ex)
{
	return libc->_Unwind_RaiseException(ex);
}

void
_Unwind_DeleteException(void *ex)
{
	libc->_Unwind_DeleteException(ex);
}

void *
_Unwind_GetLanguageSpecificData(void *ctx)
{
	return libc->_Unwind_GetLanguageSpecificData(ctx);
}

uintptr_t
_Unwind_GetRegionStart(void *ctx)
{
	return libc->_Unwind_GetRegionStart(ctx);
}

uintptr_t
_Unwind_GetDataRelBase(void *ctx)
{
	return libc->_Unwind_GetDataRelBase(ctx);
}

uintptr_t
_Unwind_GetTextRelBase(void *ctx)
{
	return libc->_Unwind_GetTextRelBase(ctx);
}

uintptr_t
_Unwind_GetIP(void *ctx)
{
	return libc->_Unwind_GetIP(ctx);
}

uintptr_t
_Unwind_GetGR(void *ctx, int gr)
{
	return libc->_Unwind_GetGR(ctx, gr);
}

void
_Unwind_SetIP(void *ctx, uintptr_t ip)
{
	libc->_Unwind_SetIP(ctx, ip);
}

void
_Unwind_SetGR(void *ctx, int gr, uintptr_t value)
{
	libc->_Unwind_SetGR(ctx, gr, value);
}

void
_Unwind_Resume(void *ex)
{
	libc->_Unwind_Resume(ex);
}

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
static CONST_APTR function_table[] = {
	(CONST_APTR)lib_open,
	(CONST_APTR)lib_close,
	(CONST_APTR)lib_expunge,
	(CONST_APTR)lib_null,
#include "amiga-library-functable.inc"
	(CONST_APTR)-1,
};
#pragma GCC diagnostic pop

static struct {
	ULONG data_size;
	CONST_APTR *function_table;
	ULONG *data_table;
	struct Library *(*init_func)(
	    struct ExecBase *exec_base OBJC_M68K_REG("a6"),
	    BPTR seg_list OBJC_M68K_REG("a0"),
	    void *seg_list OBJC_M68K_REG("a0"),
	    struct ObjFWRTBase *base OBJC_M68K_REG("d0"));
} init_table = {
	sizeof(struct ObjFWRTBase),
	function_table,
	NULL,
	lib_init
};